PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) POWER CONTROL TOWARDS MULTIPLE TRANSMISSION-AND-RECEPTION POINTS (TRPS)

A method, system and apparatus are disclosed for physical uplink control channel (PUCCH) power control towards multiple transmission and reception points (TRPs). According to one aspect, a method in a network node includes configuring a wireless device (WD) with a list of at least two power control parameter sets for power control of a PUCCH applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources. The method also includes transmitting a medium access control (MAC) control element (CE) to the WD to activate at least one power control parameter set from the list of power control parameter sets applicable to at least one of (1) one PUCCH resource, (2) each one of multiple PUCCH resources, and (3) multiple groups of PUCCH resources.

TECHNICAL FIELD

The present disclosure relates to wireless communications, and in particular, to physical uplink control channel (PUCCH) power control towards multiple transmit receive points (TRPs).

BACKGROUND

NR Frame Structure and Resource Grid

Third Generation Partnership Project (3GPP) New Radio (NR, also called 5thGeneration or 5G) uses CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing) in both downlink (DL) (i.e., from a network node, gNB, or base station, to a wireless device (WD, also called user equipment or UE) and uplink (UL) (i.e., from WD to gNB). Discrete Fourier transform (DFT)-spread OFDM is also supported in the uplink. In the time domain, NR downlink and uplink are organized into equally sized subframes of 1 millisecond (ms) each. A subframe is further divided into multiple slots of equal duration. The slot length depends on subcarrier spacing. For subcarrier spacing of Δf=15 kHz, there is only one slot per subframe, and each slot consists of 14 OFDM symbols.

Data scheduling in NR is typically on a slot basis, an example is shown inFIG.1with a 14-symbol slot, where the first two symbols contain physical downlink control channel (PDCCH) and the rest contains physical shared data channel, either PDSCH (physical downlink shared channel) or PUSCH (physical uplink shared channel).

Different subcarrier spacing values are supported in NR. The supported subcarrier spacing values (also referred to as different numerologies) are given by Δf=(15×2{circumflex over ( )}μ) kHz where μ∈{0,1,2,3,4}. Δf=15 kHz is the basic subcarrier spacing. The slot durations at different subcarrier spacings may be given by ½{circumflex over ( )}μ ms.

In the frequency domain, a system bandwidth is divided into resource blocks (RBs), each corresponds to 12 contiguous subcarriers. The RBs are numbered starting with 0 from one end of the system bandwidth. The basic NR physical time-frequency resource grid is illustrated inFIG.2, where only one resource block (RB) within a 14-symbol slot is shown. One OFDM subcarrier during one OFDM symbol interval forms one resource element (RE).

Downlink (DL) PDSCH transmissions can be either dynamically scheduled on a slot-by-slot basis, or semi-persistently scheduled (SPS). Dynamic PDSCH scheduling may be performed by sending downlink control information (DCI) over PDCCH (Physical Downlink Control Channel). Different DCI formats are defined in NR for DL PDSCH scheduling including DCI format 1_0, DCI format 1_1, and DCI format 1_2. For SPS, periodic PDSCH transmissions may be activated or deactivated by DCI.

Similarly, uplink (UL) PUSCH transmission may also be scheduled either dynamically or semi-persistently with uplink grants carried in PDCCH. The DCI formats for scheduling PUSCH include DCI format 0_0, DCI format 0_1, and DCI format 0_2.

Physical Uplink Control Channel (PUCCH)

In NR. PUCCH is used to carry uplink control information (UCI) such as hybrid automatic repeat request acknowledgement (HARQ-ACK), channel state information (CSI), or scheduling request (SR).

There are five PUCCH formats defined in NR, i.e., PUCCH formats 0 to 4, with different payload capacity and duration in time. A WD may be configured with multiple PUCCH resources, each associated with a PUCCH format.

Spatial relation is used in NR to refer to a spatial relationship between an UL channel or signal, such as PUCCH, PUSCH, or sounding reference signal (SRS), and a DL reference signal (RS), such as CSI reference signal (CSI-RS), synchronization signal (SS), physical broadcast channel block (SSB), or a UL sounding reference signal (SRS). If an UL channel is spatially related to a DL RS, a WD is expected to transmit the UL channel with a same antenna pattern or beam for receiving the DL RS. If an UL channel is spatially related to an UL SRS, then the WD may be expected to apply a same antenna pattern or beam for the UL channel and the SRS.

Up to 64 PUCCH spatial relations may be configured for a WD. For each PUCCH resource, one of the spatial relations may be activated or updated by a command carried in a Medium Access Control (MAC) Control Element (CE).

Note that PUCCH spatial relation may not be configured in frequency NR range one (FR1). In that case, a default relation may be defined.

There is provided below a PUCCH spatial relation information element (IE) that a WD can be configured for a UL bandwidth part (BWP) in NR. It includes one of an SSB index, a CSI-RS resource index, and a SRS resource index, as well as some power control parameters such as a pathloss reference RS Index, a P0-PUCCH index, and a closed-loop index.

To facilitate faster UL beam selection in frequency 2 (FR2), a unified transmission configuration indicator (TCI) framework is currently under discussion in 3GPP NR Rel-17 to replace spatial relations in the UL. A TCI state is used in NR to indicate a so-called quasi co-location (QCL) properties between a DL source RS and a DL target RS. If the WD knows that two signals are QCL with respect to a certain parameter (e.g., Doppler spread), the WD can estimate that parameter based on one signal and apply that estimate for receiving the other signal. Four types of QCL relations were defined as:Type A: {Doppler shift, Doppler spread, average delay, delay spread};Type B: {Doppler shift, Doppler spread};Type C: {average delay, Doppler shift}; andType D: {Spatial Rx parameter}.

A TCI state may contain up to two types of QCL information. A TCI state IE is shown below, where if two QCL types are indicated, one of them is a type-D QCL.

It is envisioned that when a unified TCI framework is introduced, TCI states may be used to indicate a spatial relation in the UL. The TCI states may be defined separately for UL and DL or common TCI states are defined for both DL and UL.

PUCCH Power Control in NR

PUCCH power control is used to determine a proper PUCCH transmit power level at a WD. Power control generally includes two parts, i.e., open-loop power control and closed-loop power control. Open-loop power control is used to set the uplink transmit power based on an estimated downlink pathloss (PL) between the gNB and the WD, a target receive power, PUCCH format, uplink control information (UCI) payload, etc.

Closed-loop power control is based on transmit power control (TPC) commands received from the gNB. A closed loop adjustment at a given time is also referred as a power control adjustment state.

Downlink pathloss is estimated based on a DL RS and is equal to the difference between the transmitted and received power measured on the DL RS at a WD. The DL RS is referred to as a DL pathloss reference RS. A DL pathloss reference RS can be a CSI-RS or SSB.

If a WD transmits a PUCCH in a PUCCH resource on active UL BWP b of carrier f in the primary cell c using PUCCH power control adjustment state with index l (l=0,1), the WD determines the PUCCH transmission power PPUCCH,b,f,c(i,qu,qd,l) in PUCCH transmission occasion i as:

where PCMAX,f,c(i) is the configured WD maximum output power defined in section 8-1 of 3GPP Technical Specification (TS) 38.101-1, section 8-2 of 3GPP TS 38.101-2, and section 8-3 of 3GPP TS 38.101-3 for carrier f of primary cell c in PUCCH transmission occasion i. Popen-loop,b,f,c(i, qu, qd) is the open loop power adjustment and may be given by:

where,PO_PUCCH,b,f,c(qu)=PO_NOMINAL_PUCCH+PO_UE_PUCCH(qu) is a nominal target receive power in dBm; andPO_NOMINAL_PUCCHis a cell specific component and PO_UE_PUCCH(qu) is a WD specific component. PO_NOMINAL_PUCCHis provided by a higher layer parameter p0-nominal, or, PO_NOMINAL_PUCCH=0 if p0-nominal is not configured.
PO_UE_PUCCH(qu) is provided by a higher layer parameter p0-PUCCH-Value in P0-PUCCH with index qufor active UL BWP b of carrier f of primary cell c, where 0≤qu<Qu, Quis a size for a set of P0-PUCCH provided by a higher layer parameter maxNrofPUCCH-P0-perSet. The set of P0-PUCCH is provided by a higher layer parameter p0-Set as shown in the PUCCH PowerControl information element below:If p0-Set is not configured, PO_UE_PUCCH(qu)=0;PRB(i) is a power adjustment related to the number of RBs occupied in a transmission occasion i;PLb,f,c(qd) is the estimated pathloss in dB by the WD using a PUCCH pathloss reference RS with index qdfor the active DL BWP b of carrier f of primary cell c;ΔF_PUCCH(F) is a PUCCH format dependent power adjustment; andΔTF,b,f,c(i) is a power adjustment related to the PUCCH resource on active UL BWP b of carrier f of primary cell c.

Pclosed-loop(i, l) is a closed-loop power adjustment and may be given by:

Where:gb,f,c(i, l) is the PUCCH power control adjustment state with index l for active UL BWP b of carrier f of primary cell c at PUCCH transmission occasion i;δPUCCH,b,f,c(i, l) is a TPC command value included in a DCI format (i.e., DCI formats 1_0, 1_1 or 1_2) scheduling a PDSCH reception for active UL BWP b of carrier f of the primary cell c that the WD detects for PUCCH transmission occasion i, or is jointly coded with other TPC commands in a DCI format 2_2 with CRC scrambled by TPC-PUCCH-RNTI according to Clause 11.3 of 3GPP TS 36.212; andΣm=0MδPUCCH,b,f,c(i, m) is a sum of TPC command values that the WD receives between KPUCCH(i-i0)−1 symbols before PUCCH transmission occasion i-i0and KPUCCH(i) symbols before PUCCH transmission i on active UL BWP b of carrier f of the primary cell c for PUCCH power control adjustment state with index l, where i0>0 is the smallest integer for which KPUCCH(i-i0) symbols before PUCCH transmission occasion i-i0is earlier than KPUCCH(i) symbols before PUCCH transmission occasion i. If the PUCCH transmission is in response to a detection by the WD of a DCI format, KPUCCH(i) is a number of symbols after a last symbol of a corresponding PDCCH reception and before a first symbol of the PUCCH transmission. Otherwise, KPUCCH(i)=k2,min·Nsymbslot, where k2,minis the minimum number of slots configured between a PDCCH and its scheduled PUSCH, Nsymbslotis the number of symbols in a slot.

The closed-loop index l, PUCCH pathloss reference RS index qd, and a P0-PUCCH index quare configured in a PUCCH spatial relation, as shown in in the IE above, activated for the PUCCH resource.

If the WD is not provided twoPUCCH-PC-AdjustmentStates or PUCCH-SpatialRelationInfo, l=0.

If the WD is not provided PUCCH-SpatialRelationInfo, the WD obtains the p0-PUCCH-Value value from the P0-PUCCH with p0-PUCCH-Id value equal to the minimum p0-PUCCH-Id value in p0-Set.

If the WD is not provided PUCCH-SpatialRelationInfo, but a set of PUCCH pathloss RSs is configured, then the PUCCH pathloss reference RS in the first entry (i.e., with index=0) in the list may be used.

If both PUCCH pathloss reference RS and PUCCH-SpatialRelationInfo are not configured, but the WD is configured with enableDefaultBeamPlForPUCCH, then the pathloss reference RS is a periodic RS resource with ‘QCL-TypeD’ in the TCI state of a control resource set (CORESET) with the lowest index in the active DL BWP of the primary cell.

If the WD is not provided pathlossReferenceRSs, then the pathloss reference RS may be an SS/PBCH block with same SSB index as the one the WD uses to obtain the master information block (MIB).

PUCCH power control related parameters are signaled to a WD in a PUCCH-PowerControl information element, which is shown below.

UL Transmission to Multiple Transmission Points (TRPs)

In 3GPP NR Rel-17, it has been considered to introduce UL enhancement with multiple TRPs by transmitting a PUCCH towards different TRPs in different times, or PUCCH repetition to multiple TRPs. An example is shown inFIG.3.

It has been considered that two SRS resource sets with usage set to “codebook” or “non-codebook” will be introduced in NR 3GPP Release 17 (3GPP Rel-17) for PUSCH repetition to two TRPs. Since the propagation channels to the two TRPs can be quite different, it has been considered in 3GPP RAN1 that for PUCCH repetition to multiple TRPs in FR1, two sets of power control parameters are used, and each set has a dedicated value of p0, a pathloss reference RS ID and a closed-loop index. The related consideration is given below:

“To support per TRP power control for multi-TRP PUCCH schemes in FR1:Two sets of power control parameters are used, and each set has a dedicated value of p0, pathloss RS ID and a closed-loop index;For further study (FFS): details on how a PUCCH resource can be linked to one or both of the two sets of power control parameters; andFFS: whether a PUCCH resource group can be linked to power control parameter sets.”

SUMMARY

Some embodiments advantageously provide methods, systems, and apparatuses for PUCCH power control towards multiple TRPs.

In one embodiment, a network node is configured to send a medium access control, MAC, control element, CE, to the WD, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; and optionally, receive a PUCCH transmission from the WD on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

In one embodiment, a wireless device (WD) is configured to receive a medium access control, MAC, control element, CE, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; and optionally, transmit a PUCCH transmission on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

According to one aspect, a method in a network node includes: configuring the WD with a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources. The process also includes transmitting a medium access control, MAC, control element, CE, to the WD to activate at least one power control parameter set from the list of power control parameter sets applicable to at least one of (1) one PUCCH resource, (2) each one of multiple PUCCH resources, and (3) multiple groups of PUCCH resources.

According to this aspect, in some embodiments, each of the list of at least two power control parameter set includes a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the method also includes configuring the WD with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node.

According to another aspect, a network node configured to communicate with a wireless device includes: processing circuitry configured to configure the WD with a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources; and a radio interface in communication with the processing circuitry and configured to transmit a medium access control, MAC, control element, CE, to the WD to activate at least one power control parameter set from the list of power control parameter sets applicable to at least one of (1) one PUCCH resource, (2) each one of multiple PUCCH resources, and (3) multiple groups of PUCCH resources.

According to this aspect, in some embodiments, each of the list of at least two power control parameter set includes a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the processing circuitry is configured to configure the WD with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node.

According to yet another aspect, a method in a wireless device includes receiving a configuration of a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources. The process also includes setting a transmit power level based at least in part on at least one of the at least two power control parameter sets in the list.

In some embodiments, each of the list of at least two power control parameter set comprises a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the method also includes configuring the WD (22) with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, the MAC CE is further configured to configure at least two PUCCH spatial relations, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node.

According to another aspect, a wireless device configured to communicate with a network node, includes: a radio interface configured to receive a configuration of a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources; and processing circuitry in communication with the radio interface and configured to set a transmit power level based at least in part on at least one of the at least two power control parameter sets in the list.

In some embodiments, each of the list of at least two power control parameter set comprises a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the processing circuitry is also configured to configure the WD with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, the MAC CE is further configured to configure at least two PUCCH spatial relations, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node.

DETAILED DESCRIPTION

In NR 3GPP Release 15/16 (3GPP Rel-15/16), PUCCH spatial relation may not be configured in FR1 and a WD may assume closed-loop index l=0, P0-PUCCH in p0-Set with the minimum p0-PUCCH-Id value, and PUCCH pathloss reference RS with index=0. For PUCCH repetition to multiple TRPs and two sets of power control parameters configured in FR1, how to link a PUCCH resource to one of the two sets is an open issue.

Some embodiments may include arrangements for linking and/or associating a PUCCH resource to one of two (or more) sets of PUCCH power control parameters, e.g., when PUCCH spatial relation is not configured, typically in FR1. In some embodiments, the two sets of PUCCH power control parameters may be explicitly configured with each set being identified by a set index value. Each PUCCH resource may be activated/updated with a MAC CE with one of or both sets of PUCCH power control parameters.

In some embodiments, for PUCCH repetitions towards multiple TRPs and when PUCCH spatial relation is not configured, two (or more) sets of PUCCH power control parameters are explicitly configured (in e.g., PUCCH-PowerControl IE) each with a set index, or more particularly a set index value. In some embodiments, for each PUCCH resource (or group of PUCCH resources), a MAC CE is used to link the PUCCH resource (or group of PUCCH resources) to one of or both the two sets of PUCCH power control parameters.

In one embodiment, the MAC CE comprises one or more of: a BWP field of 2 bits, a serving cell identifier (ID) field of 5 bits, and a first reserved bit in a first octet; a PUCCH resource index field of 7 bits and a second reserved bit in a second octet, and a dedicated field of 1 bit for each of the two sets PUCCH power control parameters in a third octet. A set is activated for (or linked to or associated to) the PUCCH resource (or group of PUCCH resources) if the corresponding field is set to 1 and deactivated (or link removed or de-associated) if the corresponding field is set to 0.

In another embodiment, the above applies only if the first reserved bit is set to 1. Otherwise, the fields for the two sets of power control parameters are ignored.

Alternatively, or additionally, the second reserved bit is used to indicated whether the third octet is present or not. If the third octet is not present (e.g., when the second reserved bit is set to 0), both of the two sets are activated (or deactivated) when the first reserved bit is set to 1 (or 0).

In yet another embodiment, the MAC CE comprises one or more of: a BWP field of 2 bits and a serving cell ID field of 5 bits, and a first set indicator field of 1 bit in a first octet, and a PUCCH resource index field of 7 bits and a second set indicator field of 1 bit in a second octet. If the first set indicator field is set to 1, the PUCCH resource (or group of PUCCH resources) is activated with both of the two sets and the second bit field is ignored. If the first bit field is set to 0, the second bit field is used to activated one of the two sets for the PUCCH resource (or group of PUCCH resources).

In some embodiments, when both of the two sets are activated for a PUCCH resource, PUCCH transmission scheduled in the PUCCH resource is repeated towards the two or more TRPs at different times, e.g., a first set is applied to PUCCH transmission occasions to a first TRP and a second set is applied to PUCCH transmission occasions to a second TRP.

Some embodiments may enable per TRP PUCCH power control towards different TRPs, especially when PUCCH spatial relation is not configured, which is typically the case in FR1.

Even though the descriptions herein may be explained in the context of one of a Downlink (DL) and an Uplink (UL) communication, it should be understood that the basic principles disclosed may also be applicable to the other of the one of the DL and the UL communication. In some embodiments in this disclosure, the principles may be considered applicable to a transmitter and a receiver. For DL communication, the network node is the transmitter and the receiver is the WD. For the UL communication, the transmitter is the WD and the receiver is the network node.

Although the description herein may be explained in the context of a PUCCH channel, it should be understood that the principles may also be applicable to other channels, such as, for example, PUSCH.

The term “signaling” used herein may comprise any of: high-layer signaling (e.g., via Radio Resource Control (RRC) or a like), lower-layer signaling (e.g., via a physical control channel or a broadcast channel), or a combination thereof. The signaling may be implicit or explicit. The signaling may further be unicast, multicast or broadcast. The signaling may also be directly to another node or via a third node.

Signaling may generally comprise one or more symbols and/or signals and/or messages. A signal may comprise or represent one or more bits. An indication may represent signaling, and/or be implemented as a signal, or as a plurality of signals. One or more signals may be included in and/or represented by a message. Signaling, in particular control signaling, may comprise a plurality of signals and/or messages, which may be transmitted on different carriers and/or be associated to different signaling processes, e.g., representing and/or pertaining to one or more such processes and/or corresponding information. An indication may comprise signaling, and/or a plurality of signals and/or messages and/or may be comprised therein, which may be transmitted on different carriers and/or be associated to different acknowledgement signaling processes, e.g., representing and/or pertaining to one or more such processes. Signaling associated to a channel may be transmitted such that represents signaling and/or information for that channel, and/or that the signaling is interpreted by the transmitter and/or receiver to belong to that channel. Such signaling may generally comply with transmission parameters and/or format/s for the channel.

An indication generally may explicitly and/or implicitly indicate the information it represents and/or indicates. Implicit indication may for example be based at least in part on position and/or resource used for transmission. Explicit indication may for example be based at least in part on a parametrization with one or more parameters, and/or one or more index or indices corresponding to a table, and/or one or more bit patterns representing the information.

Configuring a radio node, in particular a terminal or WD (e.g., WD), may refer to the radio node being adapted or caused or set and/or instructed to operate according to the configuration. Configuring may be done by another device, e.g., a network node (e.g., network node) (for example, a base station or gNB) or network, in which case it may comprise transmitting configuration data to the radio node to be configured. Such configuration data may represent the configuration to be configured and/or comprise one or more instruction pertaining to a configuration, e.g., a configuration for transmitting and/or receiving on allocated resources, in particular frequency resources. A radio node may configure itself, e.g., based on configuration data received from a network or network node. A network node may utilize, and/or be adapted to utilize, its circuitry/ies for configuring. Allocation information may be considered a form of configuration data. Configuration data may comprise and/or be represented by configuration information, and/or one or more corresponding indications and/or message/s.

Generally, configuring may include determining configuration data representing the configuration and providing, e.g., transmitting, it to one or more other nodes (parallel and/or sequentially), which may transmit it further to the radio node (or another node, which may be repeated until it reaches the wireless device). Alternatively, or additionally, configuring a radio node, e.g., by a network node or other device, may include receiving configuration data and/or data pertaining to configuration data, e.g., from another node like a network node, which may be a higher-level node of the network, and/or transmitting received configuration data to the radio node. Accordingly, determining a configuration and transmitting the configuration data to the radio node may be performed by different network nodes or entities, which may be able to communicate via a suitable interface, e.g., an X2 interface in the case of LTE or a corresponding interface for NR. Configuring a terminal (e.g., WD) may comprise scheduling downlink and/or uplink transmissions for the terminal, e.g., downlink data and/or downlink control signaling and/or DCI and/or uplink control or data or communication signaling, in particular acknowledgement signaling, and/or configuring resources and/or a resource pool therefor. In particular, configuring a terminal (e.g., WD) may comprise configuring the WD to perform certain measurements on certain subframes or radio resources and reporting such measurements according to embodiments of the present disclosure.

Transmitting in downlink may pertain to transmission from the network or network node to the terminal. The terminal may be considered the WD or UE. Transmitting in uplink may pertain to transmission from the terminal to the network or network node. Transmitting in sidelink may pertain to (direct) transmission from one terminal to another. Uplink, downlink and sidelink (e.g., sidelink transmission and reception) may be considered communication directions. In some variants, uplink and downlink may also be used to described wireless communication between network nodes, e.g., for wireless backhaul and/or relay communication and/or (wireless) network communication for example between base stations or similar network nodes, in particular communication terminating at such. It may be considered that backhaul and/or relay communication and/or network communication is implemented as a form of sidelink or uplink communication or similar thereto.

The term time or time resource used herein may correspond to any type of physical resource or radio resource expressed in terms of length of time. Examples of time resources are: symbol, time slot, sub-slot, subframe, radio frame, TTI, interleaving time, etc. As used herein, in some embodiments, the terms “subframe,” “slot,” “sub-slot”, “sub-frame/slot” and “time resource” are used interchangeably and are intended to indicate a time resource and/or a time resource number.

A cell may be generally a communication cell, e.g., of a cellular or mobile communication network, provided by a node. A serving cell may be a cell on or via which a network node (the node providing or associated to the cell, e.g., base station or gNodeB) transmits and/or may transmit data (which may be data other than broadcast data) to a user equipment, in particular control and/or user or payload data, and/or via or on which a user equipment transmits and/or may transmit data to the node; a serving cell may be a cell for or on which the user equipment is configured and/or to which it is synchronized and/or has performed an access procedure, e.g., a random access procedure, and/or in relation to which it is in a RRC_connected or RRC_idle state, e.g., in case the node and/or user equipment and/or network follow the LTE or NR standard. One or more carriers (e.g., uplink and/or downlink carrier/s and/or a carrier for both uplink and downlink) may be associated to a cell.

It may be considered for cellular communication there is provided at least one uplink (UL) connection and/or channel and/or carrier and at least one downlink (DL) connection and/or channel and/or carrier, e.g., via and/or defining a cell, which may be provided by a network node, in particular a base station or gNodeB. An uplink direction may refer to a data transfer direction from a terminal to a network node, e.g., base station and/or relay station. A downlink direction may refer to a data transfer direction from a network node, e.g., base station and/or relay node, to a terminal. UL and DL may be associated to different frequency resources, e.g., carriers and/or spectral bands. A cell may comprise at least one uplink carrier and at least one downlink carrier, which may have different frequency bands. A network node, e.g., a base station or gNodeB, may be adapted to provide and/or define and/or control one or more cells, e.g., a PCell and/or a LA cell.

Predefined in the context of this disclosure may refer to the related information being defined for example in a standard, and/or being available without specific configuration from a network or network node, e.g., stored in memory, for example independent of being configured. Configured or configurable may be considered to pertain to the corresponding information being set/configured, e.g., by the network or a network node.

A network node16is configured to include a configuration unit32which is configured to configure the WD with a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources.

A wireless device22is configured to include a power control unit34which is configured to set a transmit power level based at least in part on at least one of the at least two power control parameter sets in the list.

Thus, the network node16further has software74stored internally in, for example, memory72, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the network node16via an external connection. The software74may be executable by the processing circuitry68. The processing circuitry68may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by network node16. Processor70corresponds to one or more processors70for performing network node16functions described herein. The memory72is configured to store data, programmatic software code and/or other information described herein. In some embodiments, the software74may include instructions that, when executed by the processor70and/or processing circuitry68, causes the processor70and/or processing circuitry68to perform the processes described herein with respect to network node16. For example, processing circuitry68of the network node16may include a configuration unit32which is configured to configure the WD with a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources. In some embodiments, the configuration unit32is configured to perform network node methods discussed herein, such as the methods discussed with reference toFIG.10as well as other figures.

The communication system10further includes the WD22already referred to. The WD22may have hardware80that may include a radio interface82configured to set up and maintain a wireless connection64with a network node16serving a coverage area18in which the WD22is currently located. The radio interface82may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.

The processing circuitry84may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by WD22. The processor86corresponds to one or more processors86for performing WD22functions described herein. The WD22includes memory88that is configured to store data, programmatic software code and/or other information described herein. In some embodiments, the software90and/or the client application92may include instructions that, when executed by the processor86and/or processing circuitry84, causes the processor86and/or processing circuitry84to perform the processes described herein with respect to WD22. For example, the processing circuitry84of the wireless device22may include a power control unit34which is configured to set a transmit power level based at least in part on at least one of the at least two power control parameter sets in the list. In some embodiments, the power control unit34is configured to perform WD methods discussed herein, such as the methods discussed with reference toFIG.11as well as other figures.

In some embodiments, the inner workings of the network node16, WD22, and host computer24may be as shown inFIG.5and independently, the surrounding network topology may be that ofFIG.4.

In some embodiments, the host computer24includes processing circuitry42and a communication interface40that is configured to a communication interface40configured to receive user data originating from a transmission from a WD22to a network node16. In some embodiments, the WD22is configured to, and/or comprises a radio interface82and/or processing circuitry84configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the network node16, and/or preparing/terminating/maintaining/supporting/ending in receipt of a transmission from the network node16.

AlthoughFIGS.4and5show various “units” such as configuration unit32, and power control unit34as being within a respective processor, it is contemplated that these units may be implemented such that a portion of the unit is stored in a corresponding memory within the processing circuitry. In other words, the units may be implemented in hardware or in a combination of hardware and software within the processing circuitry.

FIG.10is a flowchart of an example process in a network node16according to some embodiments of the present disclosure. One or more Blocks and/or functions and/or methods performed by the network node16may be performed by one or more elements of network node16such as by configuration unit32in processing circuitry68, processor70, radio interface62, etc. according to the example method. Network node16such as via processing circuitry68and/or processor70and/or radio interface62and/or communication interface60is configured to perform at least one of the steps in Blocks S134and S136. The example method includes sending (Block S134), such as via configuration unit32, processing circuitry68, processor70, communication interface60and/or radio interface62, a medium access control, MAC, control element, CE, to the WD, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets. The method includes optionally, receiving (Block S136), such as via configuration unit32, processing circuitry68, processor70, communication interface60and/or radio interface62, a PUCCH transmission from the WD on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

In some embodiments, the method further includes configuring, such as via configuration unit32, processing circuitry68, processor70, communication interface60and/or radio interface62, the WD with at least two PUCCH power control parameter sets. In some embodiments, the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit. In some embodiments, n is 2.

In some embodiments, the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated. In some embodiments, the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE. In some embodiments, the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE.

In some embodiments, the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F. In some embodiments, the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; and the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’. In some embodiments, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; and when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

In some embodiments, the MAC CE comprises a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE comprises: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set. In some embodiments, based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group identified by the PUCCH resource index field in the second octet.

In some embodiments, the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set. In some embodiments, the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters. In some embodiments, the at least two PUCCH power control parameter sets are configured to the WD only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell).

In some embodiments, the MAC CE comprises at least one of: a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet; a 7-bit PUCCH resource index field and a second reserved bit in a second octet; and a dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet. In other embodiments, different bit size fields are possible.

In some embodiments, each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’. In some embodiments, conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE. In some embodiments, the MAC CE comprises at least one of: a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; and a 7-bit PUCCH resource index field and a second set indicator in a second octet. In other embodiments, different bit size fields are possible.

In some embodiments, when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; and when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated. In some embodiments, when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the PUCCH transmissions from the WD are received at different times per PUCCH power control parameter set.

In some embodiments, the method further includes configuring, such as via configuration unit32, processing circuitry68, processor70, communication interface60and/or radio interface62, the WD22with the one of the PUCCH resource and the PUCCH resource group; and each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node16.

FIG.11is a flowchart of an example process in a wireless device22according to some embodiments of the present disclosure. One or more Blocks and/or functions and/or methods performed by WD22may be performed by one or more elements of WD22such as by power control unit34in processing circuitry84, processor86, radio interface82, etc. Wireless device22such as via processing circuitry84and/or processor86and/or radio interface82is configured to perform at least one of the steps in Blocks S138and S140. The example method includes receiving (Block S138), such as via power control unit34, processing circuitry84, processor86and/or radio interface82, a medium access control, MAC, control element, CE, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets. The method further includes optionally, transmitting (Block S140), such as via power control unit34, processing circuitry84, processor86and/or radio interface82, a PUCCH transmission on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

In some embodiments, the method further includes receiving, such as via power control unit34, processing circuitry84, processor86and/or radio interface82, a configuration comprising at least two PUCCH power control parameter sets. In some embodiments, the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit. In some embodiments, n is 2. In some embodiments, the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated.

In some embodiments, the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE. In some embodiments, the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE. In some embodiments, the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F. In some embodiments, the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; and the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’.

In some embodiments, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; and when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

In some embodiments, the MAC CE comprises a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE comprises: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE; a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set; and wherein based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group that is identified by the PUCCH resource index field in the second octet.

In some embodiments, the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set. In some embodiments, the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters.

In some embodiments, the at least two PUCCH power control parameter sets are configured to the WD22only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell). In some embodiments, the MAC CE comprises: a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet; a 7-bit PUCCH resource index field and a second reserved bit in a second octet; and a dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet.

In some embodiments, each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’. In some embodiments, conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE. In some embodiments, the MAC CE comprises: a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; and a 7-bit PUCCH resource index field and a second set indicator in a second octet.

In some embodiments, when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; and when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated. In some embodiments, when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the method comprises transmitting, such as via power control unit34, processing circuitry84, processor86and/or radio interface82, each of the corresponding PUCCH transmissions at different times per PUCCH power control parameter set.

In some embodiments, the method further includes receiving, such as via power control unit34, processing circuitry84, processor86and/or radio interface82, a configuration comprising the one of the PUCCH resource and the PUCCH resource group; and each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node.

FIG.12is a flowchart of an example process in a network node16according to some embodiments of the present disclosure. One or more Blocks and/or functions and/or methods performed by the network node16may be performed by one or more elements of network node16such as by configuration unit32in processing circuitry68, processor70, radio interface62, etc. according to the example method. Network node16such as via processing circuitry68and/or processor70and/or radio interface62and/or communication interface60is configured to configure the WD with a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources (Block S142). The process also includes transmitting a medium access control, MAC, control element, CE, to the WD (22) to activate at least one power control parameter set from the list of power control parameter sets applicable to at least one of (1) one PUCCH resource, (2) each one of multiple PUCCH resources, and (3) multiple groups of PUCCH resources (Block S144).

In some embodiments, each of the list of at least two power control parameter set includes a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the method also includes configuring the WD (22) with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, at least two PUCCH spatial relations are configured to the WD (22), each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD (22) to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node (16).

FIG.13is a flowchart of an example process in a wireless device22according to some embodiments of the present disclosure. One or more Blocks and/or functions and/or methods performed by WD22may be performed by one or more elements of WD22such as by power control unit34in processing circuitry84, processor86, radio interface82, etc. Wireless device22such as via processing circuitry84and/or processor86and/or radio interface82is configured to receive a configuration of a list of at least two power control parameter sets for power control of a physical uplink control channel, PUCCH, applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources (Block S146). The process also includes setting a transmit power level based at least in part on at least one of the at least two power control parameter sets in the list (Block S148).

In some embodiments, each of the list of at least two power control parameter set comprises a PUCCH pathloss reference signal identifier, ID, a target receive power, P0-PUCCH, ID, a closed-loop index, and a power control parameter set ID. In some embodiments, the method also includes configuring the WD (22) with PUCCH repetition to at least one transmission and reception point, TRP, each TRP associated with at least one of the at least two power control parameter sets. In some embodiments, the MAC CE includes a PUCCH resource identifier including two bit fields, each bit field identifying a respective PUCCH power control parameter set from the list of at least two control parameter sets. In some embodiments, the MAC CE comprises a bit field that indicates whether one of two PUCCH power control sets and a single PUCCH power control set is activated for the at least one of (1) one PUCCH resource, (2) each one of the multiple PUCCH resources, and (3) the multiple groups of PUCCH resources. In some embodiments, the MAC CE includes: a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources that is identified in a PUCCH resource index field in a previous octet. In some embodiments, the MAC CE includes: a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set; a PUCCH resource index field in a second octet identifying the one of a PUCCH resource from the multiple PUCCH resources and a group of PUCCH resources from the multiple groups of PUCCH resources; and a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier, ID, field identifying a spatial relation and an S field identifying a PUCCH power control parameter set; and wherein, based at least in part on a value comprised in the field, E, one of the spatial relation and the S field is activated for the one of the PUCCH resource and the group of PUCCH resources identified by the PUCCH resource index field in the second octet. In some embodiments, the MAC CE is further configured to configure at least two PUCCH spatial relations, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier, ID, a P0-PUCCH ID and a closed-loop index. In some embodiments, the MAC CE includes: a bandwidth part, BWP, field, a serving cell identifier, ID, field in a first octet; a field indicating whether one of one set and two sets of PUCCH power control parameters are activated; a 7-bit PUCCH resource index field in a second octet; and a dedicated field for each of the two sets of PUCCH power control parameters in a third octet. In some embodiments, each PUCCH power control parameter set comprises power control parameters for the WD (22) to calculate PUCCH transmit power toward a corresponding transmit receive point, TRP, associated with the network node (16).

Having described the general process flow of arrangements of the disclosure and having provided examples of hardware and software arrangements for implementing the processes and functions of the disclosure, the sections below provide details and examples of arrangements for PUCCH power control towards multiple TRPs, which may be implemented by the network node16, wireless device22and/or host computer24.

The examples below are described with respect to one or more TRPs, which may be network nodes16; although for ease of understanding the term “TRP16” is used instead.

FIG.14illustrates an example of PUCCH repetition towards multiple TRPs16. For PUCCH repetition intended for reception at two different TRPs16, PUCCH power control is done separately for each intended receiving TRP16.

Two sets, a first and second sets, of PUCCH power control parameters may be configured to a WD22, intended for each TRP16respectively. Each of the two sets of power control parameters comprises at least a PUCCH pathloss reference signal index, a WD22specific P0 value or a P0-PUCCH index, and a closed loop index. The WD22may also be configured with one or more PUCCH resources.

Explicit Configuration of Two PUCCH Power Control Parameter Sets

In one embodiment, a PUCCH spatial relation may not be configured for a WD22. The two sets of PUCCH power control parameters are explicitly configured. An example is shown inFIG.15, where each set is identified by a set index. The corresponding changes in PUCCH-PowerControl IE is shown herein below, where the changes are highlighted below:First set with set ID_1PUCCH pathloss reference RS ID_1.P0-PUCCH ID_1Closed loop ID_1Second set with set ID_2PUCCH pathloss reference RS ID_2P0-PUCCH ID_2Closed loop ID_2

An example of configuring two sets of power control parameters.

Each PUCCH resource (or group of PUCCH resources) is activated/updated with a MAC CE with one or both of the first and second sets of PUCCH power control parameters by referring to the set index (i.e., PUCCH-PowerControlParaSet-Id). An example of the MAC CE for activating/updating one or both of the first and second sets of PUCCH power control parameters is shown inFIG.15. It has a variable size including one or more of the following fields:Serving Cell ID: This field indicates the identity of the Serving Cell for which the MAC CE applies;BWP ID: This field indicates a UL BWP for which the MAC CE applies;PUCCH Resource ID: This field contains an identifier of the PUCCH resource ID identified by PUCCH-ResourceId as specified in 3GPP TS 38.331. If the indicated PUCCH Resource is configured as part of a PUCCH Group as specified in 3GPP TS 38.331, no other PUCCH Resources within the same PUCCH group are indicated in the MAC CE, and this MAC CE applies to all the PUCCH Resources in the PUCCH group;Si: Siindicates the activation status of PUCCH power control parameter set i. The Sifield is set to 1 to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to i will be activated. The Sifield is set to 0 to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to i will be deactivated; andR: Reserved bit, set to 0.

Another example of the MAC CE for activating/updating one or both of the first and second sets of PUCCH power control parameters is shown inFIG.14. The MAC CE ofFIG.16has a variable size including one or more of the following fields:Serving Cell ID: This field indicates the identity of the Serving Cell for which the MAC CE applies;BWP ID: This field indicates a UL BWP for which the MAC CE applies.A/D: This field indicates whether both PUCCH-PowerControlParaSet-Id are activated or deactivated if field C is set to 0. Otherwise this field is omitted by the WD;PUCCH Resource ID: This field contains an identifier of the PUCCH resource ID identified by PUCCH-ResourceId as specified in 3GPP TS 38.331. If the indicated PUCCH Resource is configured as part of a PUCCH Group as specified in 3GPP TS 38.331, no other PUCCH Resources within the same PUCCH group are indicated in the MAC CE, and this MAC CE applies to all the PUCCH Resources in the PUCCH group;Si: Siindicates the activation status of PUCCH power control parameter set i. The Sifield is set to 1 to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to i will be activated. The Sifield is set to 0 to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to i will be deactivated;C: indicates whether the octet containing Si fields is present. If C is set to 1, the octet containing Si fields is present and if C is set to 0 the octet is not present and both PUCCH-PowerControlParaSet-Id are activated or deactivated depending on how A/D field is set; andR: Reserved bit, set to 0.

A benefit of this MAC CE variant is that it saves octets that are needed for the MAC CE in case both PUCCH-PowerControlParaSet-Id are activated or deactivated. This MAC CE can also be defined without A/D field such that C field with value 0 always activates both PUCCH-PowerControlParaSet-Id.

Yet another example of the MAC CE for activating/updating one or both of the first and second sets of PUCCH power control parameters is shown inFIG.17. It has a variable size including one or more of the following fields:Serving Cell ID: This field indicates the identity of the Serving Cell for which the MAC CE applies;BWP ID: This field indicates a UL BWP for which the MAC CE applies;F: This field indicates whether both PUCCH-PowerControlParaSet-Id are activated or deactivated or if only one of PUCCH-PowerControlParaSet-Id is activated for all PUCCH resources indicated in this MAC CE. If F field has value 1 both PUCCH-PowerControlParaSet-Id are activated or deactivated depending on how S field is set. If F field is set to “0”, one PUCCH-PowerControlParaSet-Id are activated and the other PUCCH-PowerControlParaSet-Id is deactivated as indicated by field S. Alternatively, if F field has value 1 both PUCCH-PowerControlParaSet-Id are activated and S field is ignored. If F field is set to “0”, one PUCCH-PowerControlParaSet-Id are activated and the other PUCCH-PowerControlParaSet-Id is deactivated as indicated by field S;PUCCH Resource ID: This field contains an identifier of the PUCCH resource ID identified by PUCCH-ResourceId as specified in 3GPP TS 38.331. If the indicated PUCCH Resource is configured as part of a PUCCH Group as specified in 3GPP TS 38.331, no other PUCCH Resources within the same PUCCH group are indicated in the MAC CE, and this MAC CE applies to all the PUCCH Resources in the PUCCH group; andS: If F field is set to “1”, the S field indicates the activation status of both PUCCH power control parameter sets. The S field is set to 1 to activate both PUCCH power control parameter sets. The Sifield is set to 0 to deactivate both PUCCH power control parameter set. Alternatively, Alternatively, if F field has value 1 both PUCCH-PowerControlParaSet-Id are activated and S field is ignored. If F field is set to “0”, the S field indicates activation status of PUCCH power control parameter set i. The S field set to “1” to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to 1 will be activated and with PUCCH-PowerControlParaSet-Id equal to 0 deactivated. The S field set to “0” to indicate PUCCH power control parameter set with PUCCH-PowerControlParaSet-Id equal to 0 will be activated and with PUCCH-PowerControlParaSet-Id equal to 1 deactivated.

A benefit of this MAC CE variant is that it saves octets that are needed for the MAC CE. The network would send one MAC CE for all PUCCH resources that will activate/deactivate both PUCCH power control parameter sets and another MAC CE for all PUCCH resources that will activate/dectactive one of the PUCCH power control parameter sets. As the number of configured PUCCH resources per BWP per cell can be 128, the overhead saving is considerable.

The 3GPP NR Rel-16 MAC CE inFIG.18shows a MAC CE for updating PUCCH spatial relation (reproduced from Figure 6.1.3.25-1 of 3GPP TS 38.321 V16.3.0).

In the existing MAC CE ofFIG.18, spatial relation of the PUCCH resource with resource identifier ‘PUCCH Resource ID’ is updated/activated with the spatial relation with identifier ‘Spatial Relation Info ID’ in the subsequent octet.

In another embodiment, the above MAC CE is modified as shown inFIG.19.FIG.19illustrates an example modified MAC CE to activate/update either Spatial Relation or power control set(s). In this modified MAC CE, the ‘E’ field in the first octet indicates whether a PUCCH resource is being updated with a spatial relation or power control set(s). The fields ‘S1’ and ‘S0’ indicate respectively whether the first power control set and/or the second power control set should be activated/updated for the PUCCH resource given by the PUCCH resource ID in the previous octet. If both ‘S1’ and ‘S0’ are set to 1, then both power control sets are activated for the PUCCH resource by the PUCCH resource ID in the previous octet, conditioned on the value of ‘E’ field. If ‘S1’ is set to 0 and ‘S0’ are set to 1, then only the 1st power control set is activated for the PUCCH resource by the PUCCH resource ID in the previous octet, conditioned on the value of ‘E’ field. If ‘S1’ is set to 0 and ‘S0’ are set to 1, then only the 1st power control set is activated for the PUCCH resource by the PUCCH resource ID in the previous octet, conditioned on the value of ‘E’ field. If ‘S1’ is set to 1 and ‘S0’ are set to 0, then only the 2nd power control set is activated for the PUCCH resource by the PUCCH resource ID in the previous octet, conditioned on the value of ‘E’ field.

If the ‘E’ field is set to 0, then the PUCCH resource with resource ID ‘PUCCH resource ID’ is activated with the spatial relation with identifier ‘Spatial Relation Info ID’ in the next octet.

If the ‘E’ field is set to 1, then the PUCCH resource with resource ID ‘PUCCH resource ID’ is activated with the power control set(s) given by ‘S1’ and ‘S0’ in the next octet.

In another embodiment, a single MAC CE that is different from the MAC CE ofFIG.19is used to update one or more PUCCH resource(s) with one of the following:one or two power control set(s); orone or two spatial relation(s).

A field in this single MAC CE can indicate whether the one or more PUCCH resource(s) are being updated with the power control set(s) or spatial relation(s).

When both of the two sets are activated for a PUCCH resource, the PUCCH would be repeated to a first and second TRPs16. The first set of power control parameters are applied for PUCCH transmission occasions to the first TRP16and the second set of power control parameters are applied for PUCCH transmission occasions to the second TRP16. When the first (or second) set is activated for a PUCCH resource, the PUCCH would be transmitted to a TRP16by applying the first (or second) set of power control parameters.

In another embodiment, the activation/update of power control set(s) of a PUCCH resource can be extended to a group of PUCCH resources. The following example assumes a case where a PUCCH resource is configured as part of a PUCCH group as specified in 3GPP Technical Standard (TS) 38.331. Then, when the power control set(s) are activated/updated to this PUCCH resource according to the proposed MAC CEs described above, then this activated/updated power control set(s) apply to all the PUCCH resources in the PUCCH group. In this embodiment, only a single PUCCH resource from a PUCCH group may be allowed in a MAC CE that updates the power control set(s). A benefit of this embodiment may include that multiple MAC CE's do not need to be sent to update the power control set(s) of PUCCH resources in a PUCCH resource group. Hence, control signaling overhead is conserved.

Note that the term TRP16may not be used in 3GPP specifications. Instead, TRP16may be represented by a ‘power control parameter set’ in 3GPP specifications. For instance, the first and second configured power control parameter sets may respectively represent the first and second TRPs16.

Implicit Configuration of Two PUCCH Power Control Parameter Sets

In one embodiment, it may be assumed that a WD22is configured with PUCCH spatial relations and the two sets of power control parameters are implicitly configured. For example, the two sets of parameters are configured together as two or more PUCCH pathloss reference signals, two or more WD22specific P0 values, and two closed loops as shown inFIG.18. This can be done with the existing PUCCH-PowerControl IE. The lists below show an example of configuring two sets of power control parameters.List of PUCCH pathloss reference RS:PUCCH pathloss reference RS ID_1;PUCCH pathloss reference RS ID_2;List of P0-PUCCH:P0-PUCCH ID_1;P0-PUCCH ID_2;List of closed loop indices:Closed loop ID_1;Closed loop ID_2.
Bold=first set.
Italics=second set.

Each PUCCH spatial relation contains a PUCCH pathloss reference ID, a P0-PUCCH ID, and a closed-loop index of one of the two sets of PUCCH power control parameters. When two PUCCH spatial relations are activated for a PUCCH resource, the PUCCH would be repeated to a first and second TRPs16. The power control parameters indicated in a first and second spatial relations are applied for PUCCH transmission occasions to the first and second TRPs16, respectively.

In one embodiment, the two sets of PUCCH power control parameters may be configured only when two SRS resource sets have the usage parameter set to “Codebook” or “nonCodebook” are configured for a WD22in an UL BWP of carrier frequency of a primary cell.

FIG.20illustrates an example call flow diagram illustrating example signaling between a WD22and a network node16associated with a TRP116aand TRP216b. This embodiment is illustrated for 2 TRPs; however, it may also be applicable to a scenario with more than 2 TRPs, in which case n sets are configured, where n can be any number.

In step S1, the WD22reports support of PUCCH repetitions towards multiple TRPs16a,16b. In step S2, a network node, such as one or more of the TRPs16a,16bmay configure the WD22with one or more of: two SRS resource sets with usage set to “codebook”, or “nonCodebook”; multiple PUCCH resources; and two sets of PUCCH power control parameters, one for each TRP. In step S3, the network node, such as via TRP16a, activates one or both the sets of PUCCH power control parameters for each PUCCH resource. In step S4, the network node, such as via TRP16a, schedules UCI in a PUCCH resource activated with the two sets of power control parameters. In step S5, WD22sends UCI in the PUCCH resource according to a 1stset of PUCCH power control parameters toward TRP116a. In step S6, WD22sends the same UCI in the PUCCH resource (e.g., the same PUCCH resource used in step S5), but according to a 2ndset of PUCCH power control parameters toward TRP216b.

Some embodiments may include one or more of the following:

Embodiment A1. A network node configured to communicate with a wireless device (WD), the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to one or more of:send a medium access control, MAC, control element, CE, to the WD, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; andoptionally, receive a PUCCH transmission from the WD on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

Embodiment A2. The network node of Embodiment A1, wherein the network node and/or the radio interface and/or the processing circuitry is configured to:configure the WD with at least two PUCCH power control parameter sets.

Embodiment A3. The network node of any one of Embodiments A1 and A2, wherein the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit.

Embodiment A4. The network node of Embodiment A3, wherein n is 2.

Embodiment A5. The network node of any one of Embodiments A3 and A4, wherein the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated.

Embodiment A6. The network node of any one of Embodiments A3-A5, wherein the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE.

Embodiment A7. The network node of Embodiment A1, wherein the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE.

Embodiment A8. The network node of Embodiment A7, wherein the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F.

Embodiment A9. The network node of Embodiment A8, wherein the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; andwherein the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’.

Embodiment A10. The network node of Embodiment A8, wherein when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; andwherein when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

Embodiment A11. The network node of Embodiment A1, wherein the MAC CE comprises:a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet.

Embodiment A12. The network node of Embodiment A1, wherein the MAC CE comprises:a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set;a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE; anda third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set; andwherein based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group identified by the PUCCH resource index field in the second octet.

Embodiment A13. The network node of any one of Embodiments A1-A12, wherein the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set.

Embodiment A14. The network node of any one of Embodiments A1-A13, wherein the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters.

Embodiment A15. The network node of any one of Embodiments A1-A14, wherein the at least two PUCCH power control parameter sets are configured to the WD only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell).

Embodiment A16. The network node of any one of Embodiments A1, A2 and A13-A15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet; anda 7-bit PUCCH resource index field and a second reserved bit in a second octet; anda dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet.

Embodiment A17. The network node of Embodiment A16, wherein each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’.

Embodiment A18. The network node of any one of Embodiments A16 and A17, wherein conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE.

Embodiment A19. The network node of any one of Embodiments A1, A2 and A13-A15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; anda 7-bit PUCCH resource index field and a second set indicator in a second octet.

Embodiment A20. The network node of Embodiment A19, wherein when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; andwherein when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated.

Embodiment A21. The network node of any one of Embodiments A1-A20, when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the PUCCH transmissions from the WD are received at different times per PUCCH power control parameter set.

Embodiment A22. The network node of any one of Embodiments A1-A21, wherein the network node and/or the radio interface and/or the processing circuitry is configured to:configure the WD with the one of the PUCCH resource and the PUCCH resource group; andwherein each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node.

Embodiment B1. A method implemented in a network node, the method comprising:sending a medium access control, MAC, control element, CE, to the WD, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; andoptionally, receiving a PUCCH transmission from the WD on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

Embodiment B2. The method of Embodiment B1, further comprising:configuring the WD with at least two PUCCH power control parameter sets.

Embodiment B3. The method of any one of Embodiments B1 and B2, wherein the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit.

Embodiment B4. The method of Embodiment B3, wherein n is 2.

Embodiment B5. The method of any one of Embodiments B3 and B4, wherein the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated.

Embodiment B6. The method of any one of Embodiments B3-B5, wherein the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE.

Embodiment B7. The method of Embodiment B1, wherein the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE.

Embodiment B8. The method of Embodiment B7, wherein the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F.

Embodiment B9. The method of Embodiment B8, wherein the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; andwherein the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’.

Embodiment B10. The method of Embodiment B8, wherein when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; andwherein when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

Embodiment B11. The method of Embodiment B1, wherein the MAC CE comprises a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet.

Embodiment B12. The method of Embodiment B1, wherein the MAC CE comprises:a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set;a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE; anda third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set; andwherein based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group identified by the PUCCH resource index field in the second octet.

Embodiment B13. The method of any one of Embodiments B1-B12, wherein the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set.

Embodiment B14. The method of any one of Embodiments B1-B13, wherein the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters.

Embodiment B15. The method of any one of Embodiments B1-B14, wherein the at least two PUCCH power control parameter sets are configured to the WD only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell).

Embodiment B16. The method of any one of Embodiments B1, B2 and B13-B15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet; anda 7-bit PUCCH resource index field and a second reserved bit in a second octet; anda dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet.

Embodiment B17. The method of Embodiment B16, wherein each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’.

Embodiment B18. The method of any one of Embodiments B16 and B17, wherein conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE.

Embodiment B19. The method of any one of Embodiments B1, B2 and B13-B15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; anda 7-bit PUCCH resource index field and a second set indicator in a second octet.

Embodiment B20. The method of Embodiment B19, wherein when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; andwherein when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated.

Embodiment B21. The method of any one of Embodiments B1-B20, when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the PUCCH transmissions from the WD are received at different times per PUCCH power control parameter set.

Embodiment B22. The method of any one of Embodiments B1-B21, further comprising:configuring the WD with the one of the PUCCH resource and the PUCCH resource group; andwherein each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node.

Embodiment C1. A wireless device (WD) configured to communicate with a network node, the WD configured to, and/or comprising a radio interface and/or processing circuitry configured to:receive a medium access control, MAC, control element, CE, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; andoptionally, transmit a PUCCH transmission on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

Embodiment C2. The WD of Embodiment C1, wherein the WD and/or the radio interface and/or the processing circuitry is configured to:receive a configuration comprising at least two PUCCH power control parameter sets.

Embodiment C3. The WD of any one of Embodiments C1 and C2, wherein the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit.

Embodiment C4. The WD of Embodiment C3, wherein n is 2.

Embodiment C5. The WD of any one of Embodiments C3 and C4, wherein the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated.

Embodiment C6. The WD of any one of Embodiments C3-C5, wherein the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE.

Embodiment C7. The WD of Embodiment C1, wherein the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE.

Embodiment C8. The WD of Embodiment C7, wherein the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F.

Embodiment C9. The WD of Embodiment C8, wherein the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; andwherein the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’.

Embodiment C10. The WD of Embodiment C8, wherein when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; andwherein when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

Embodiment C11. The WD of Embodiment C1, wherein the MAC CE comprises a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet.

Embodiment C12. The WD of Embodiment C1, wherein the MAC CE comprises:a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set;a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE;a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set; andwherein based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group that is identified by the PUCCH resource index field in the second octet.

Embodiment C13. The WD of any one of Embodiments C1-C12, wherein the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set.

Embodiment C14. The WD of any one of Embodiments C1-C13, wherein the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters.

Embodiment C15. The WD of any one of Embodiments C1-C14, wherein the at least two PUCCH power control parameter sets are configured to the WD only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell).

Embodiment C16. The WD of any one of Embodiments C1, C2 and C13-C15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet;a 7-bit PUCCH resource index field and a second reserved bit in a second octet; anda dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet.

Embodiment C17. The WD of Embodiment C16, wherein each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’.

Embodiment C18. The WD of any one of Embodiments C16 and C17, wherein conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE.

Embodiment C19. The WD of any one of Embodiments C1, C2 and C13-C15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; anda 7-bit PUCCH resource index field and a second set indicator in a second octet.

Embodiment C20. The WD of Embodiment C19, wherein when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; andwherein when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated.

Embodiment C21. The WD of any one of Embodiments C1-C20, wherein when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the WD and/or the radio interface and/or the processing circuitry is configured to transmit the each of the corresponding PUCCH transmissions at different times per PUCCH power control parameter set.

Embodiment C22. The WD of any one of Embodiments C1-C21, wherein the WD and/or the radio interface and/or the processing circuitry is configured to:receive a configuration comprising the one of the PUCCH resource and the PUCCH resource group; andwherein each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node.

Embodiment D1. A method implemented in a wireless device (WD), the method comprising:receiving a medium access control, MAC, control element, CE, the MAC CE indicating an association between i) one of a physical uplink control channel, PUCCH, resource and a PUCCH resource group; and ii) at least one first PUCCH power control parameter set out of a plurality of PUCCH power control parameter sets; andoptionally, transmitting a PUCCH transmission on the one of the PUCCH resource and the PUCCH resource group, the PUCCH transmission comprising a transmit power level based on the at least one first PUCCH power control parameter set that is associated to the one of the PUCCH resource and the PUCCH resource group.

Embodiment D2. The method of Embodiment D1, further comprising:receiving a configuration comprising at least two PUCCH power control parameter sets.

Embodiment D3. The method of any one of Embodiments D1 and D2, wherein the MAC CE comprises a n-bit field, S, each bit in the n-bit field, S, corresponding to a respective PUCCH power control parameter set and wherein each PUCCH power control parameter set is one of activated and deactivated based on a value in the corresponding bit.

Embodiment D4. The method of Embodiment D3, wherein n is 2.

Embodiment D5. The method of any one of Embodiments D3 and D4, wherein the MAC CE comprises a 1-bit activation/deactivation field indicating that all of the plurality of PUCCH power control parameter sets configured to the WD are one of activated and deactivated.

Embodiment D6. The method of any one of Embodiments D3-D5, wherein the MAC CE is a variable size and the MAC CE comprises a field indicating whether an octet comprising the n-bit field, S, is present in the MAC CE.

Embodiment D7. The method of Embodiment D1, wherein the MAC CE comprises a field, F, indicating whether one of i) all of the plurality of PUCCH power control parameter sets configured to the WD are activated or deactivated; and ii) only one of the sets is activated for all PUCCH resources indicated in the MAC CE.

Embodiment D8. The method of Embodiment D7, wherein the MAC CE comprises a field, S, a meaning of a first value comprised in the field, S, being based on a second value comprised in the field, F.

Embodiment D9. The method of Embodiment D8, wherein the field, S, one of activates and deactivates all of the plurality of PUCCH power control parameter sets, when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’; andwherein the field, S, one of activates and deactivates only one PUCCH power control parameter set, when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’.

Embodiment D10. The method of Embodiment D8, wherein when the second value comprised in the field, F, is one of a ‘1’ and a ‘0’, the field, S, is ignored and all of the plurality of PUCCH power control parameter sets are activated; andwherein when the second value comprised in the field, F, is another one of the ‘1’ and a ‘0’, only one PUCCH power control parameter set is activated/deactivated and the field, S, indicates which one PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets is activated/deactivated.

Embodiment D11. The method of Embodiment D1, wherein the MAC CE comprises a spatial relation information ID field in an octet, the spatial relation information ID field identifying the spatial relation activated for the one of the PUCCH resource and the PUCCH resource group that is identified in a PUCCH resource index field in a previous octet.

Embodiment D12. The method of Embodiment D1, wherein the MAC CE comprises:a field, E, in a first octet indicating whether a PUCCH resource is being updated by a spatial relation or a power control set;a PUCCH resource index field in a second octet identifying the one of the PUCCH resource and the PUCCH resource group associated with the MAC CE;a third octet subsequent to the second octet, the third octet comprising a spatial relation information identifier (ID) field and a field, S, the spatial relation information ID identifying a spatial relation and the field, S, identifying a PUCCH power control parameter set; andwherein based on a value comprised in the field, E, one of the spatial relation and the field, S, is activated for the one of the PUCCH resource and the PUCCH resource group that is identified by the PUCCH resource index field in the second octet.

Embodiment D13. The method of any one of Embodiments D1-D12, wherein the at least two PUCCH power control parameter sets are explicitly configured and/or wherein each set comprises a set index value identifying the respective PUCCH power control parameter set.

Embodiment D14. The method of any one of Embodiments D1-D13, wherein the at least two PUCCH power control parameter sets are implicitly configured and/or wherein at least two PUCCH spatial relations are configured to the WD, each PUCCH spatial relation comprising a PUCCH pathloss reference identifier (ID), a P0-PUCCH ID and a closed-loop index corresponding to a respective one of the at least two sets of PUCCH power control parameters.

Embodiment D15. The method of any one of Embodiments D1-D14, wherein the at least two PUCCH power control parameter sets are configured to the WD only when at least two sounding reference signal resource (SRS) sets have a parameter usage set to “codebook” or “noncodebook” for the WD in an uplink (UL) bandwidth part (BWP) of a carrier frequency supported by a primary cell (Pcell).

Embodiment D16. The method of any one of Embodiments D1, D2 and D13-D15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first reserved bit in a first octet;a 7-bit PUCCH resource index field and a second reserved bit in a second octet; anda dedicated 1-bit field for each of the two sets of PUCCH power control parameters in a third octet.

Embodiment D17. The method of Embodiment D16, wherein each set is activated for the one of the PUCCH resource and the PUCCH resource group when a corresponding dedicated 1-bit field is set to one of ‘1’ and ‘0’ and deactivated when the corresponding dedicated 1-bit field is set to another one of ‘1’ and ‘0’.

Embodiment D18. The method of any one of Embodiments D16 and D17, wherein conditioned on a value comprised in the first or second reserved bit, the third octet and/or the dedicated 1-bit fields are ignored/not present in the MAC CE.

Embodiment D19. The method of any one of Embodiments D1, D2 and D13-D15, wherein the MAC CE comprises:a 2-bit bandwidth part (BWP) field, a 5-bit serving cell identifier (ID) field and a first set indicator in a first octet; anda 7-bit PUCCH resource index field and a second set indicator in a second octet.

Embodiment D20. The method of Embodiment D19, wherein when first set indicator is set to one of ‘1’ and ‘0’, all of the plurality of PUCCH power control parameter sets are activated and the second set indicator is ignored; andwherein when the first set indicator is set to another one of ‘1’ and ‘0’, the second set indicator indicates the PUCCH power control parameter set out of the plurality of PUCCH power control parameter sets that is activated.

Embodiment D21. The method of any one of Embodiments D1-D20, wherein when all of the plurality of PUCCH power control parameter sets configured to the WD are activated by the MAC CE, the method comprises transmitting each of the corresponding PUCCH transmissions at different times per PUCCH power control parameter set.

Embodiment D22. The method of any one of Embodiments D1-D21, further comprising:receiving a configuration comprising the one of the PUCCH resource and the PUCCH resource group; andwherein each PUCCH power control parameter set comprises power control parameters for the WD to transmit signaling toward a corresponding transmit receive point (TRP) associated with the network node.