Patent Description:
<CIT> discusses a UE configured to report multiple power headroom reports (PHRs) for different active UL bandwidth parts (BWPs) of an UL carrier of a serving cell. <CIT> discusses a method and a device for transmitting power headroom reporting in a wireless communication system.

<NUM> introduced the power headroom report (PHR) as a MAC Control Element (CE). The PHR reports the headroom between the current UE transmit power (estimated power) and the nominal power. For example, the serving cell may use the PHR to estimate how much uplink bandwidth the UE is permitted to use for a particular subframe. The PHR may be triggered by PHR functional configuration or reconfiguration, cell activation, periodically, or by variation in pathloss or a power-backoff (P-MPRc) prior to a next periodic trigger for PHR.

In some designs, a bandwidth associated with a particular cell may comprise sub-bands associated with different transmission powers, PH values, and/or PCMAX,f,c values. In some cases, providing a single PH value and/or a single PCMAX,f,c value across the bandwidth may provide insufficient precision to mitigate self-interference at FD UEs and/or at gNB for FD-aware UEs. Aspects of the disclosure are thereby directed to a PHR comprising PH values associated multiple sub-bands of a respective bandwidth for an uplink transmission, whereby the sub-bands are associated with different transmission power levels. Such aspects may provide various technical advantages, such as power control functionality at a finer granularity and improved management of self-interference for FD-aware and/or FD-capable UEs.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus is a UE according to claim <NUM>.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus is a network component according to claim <NUM>.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described with reference to and as illustrated by the drawings, and specification.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with disjoint resource indication for full-duplex operation, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, interpreting, and/or the like) by one or more processors of the base station <NUM> and/or the UE <NUM>, may perform or direct operations described herein. In some aspects, executing instructions may include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, and/or the like.

<FIG> are diagrams illustrating one or more examples of full-duplex operation modes, in accordance with various aspects of the present disclosure. A user equipment (UE) and a base station (BS) may communicate with each other using beams. For example, a beam may be a downlink beam (e.g., on which information may be conveyed from the BS to the UE) or an uplink beam (e. g, on which information may be conveyed from the UE to the BS). In some aspects, the UE and the BS may be integrated access backhaul (IAB) wireless nodes.

A communication link between a UE and a BS may be referred to as half-duplex when the communication link includes only one of an uplink or a downlink or full-duplex when the communication link includes an uplink and a downlink. A full-duplex communication link may provide increased scalability of data rates on the link in comparison to a half-duplex communication link. In a full-duplex communication link, different antenna elements, sub-arrays, or antenna panels of a wireless communication device may simultaneously or contemporaneously perform uplink and downlink communication.

Full-duplex communication may present certain challenges in comparison to half-duplex communication. For example, a wireless communication device (e.g., a UE, a BA, and/or a wireless node) may experience self-interference between an uplink beam and a downlink beam of a full-duplex link or between components of the wireless communication device. This self-interference may complicate the monitoring of reference signals to detect beam failure. Furthermore, self-interference, cross-correlation, and/or the like, may occur in a full-duplex communication link that may not occur in a half-duplex communication link. Additionally, a wireless communication device may experience interfering transmissions from other wireless communication devices (e.g., based at least in part on an angular spread of a beam transmitted by the other wireless communication devices) in the wireless network that may cause a beam failure (e.g., an uplink beam failure, a downlink beam failure, and/or the like).

As shown in <FIG>, an example wireless network <NUM> includes a BS <NUM>-<NUM> operating in a full-duplex operation mode. The BS <NUM>-<NUM> may receive an uplink <NUM> from a UE <NUM>-<NUM> and transmit a downlink <NUM> to a UE <NUM>-<NUM>. The UE-<NUM>-<NUM> and the UE <NUM>-<NUM> may be operating in a half-duplex operation mode. The BS <NUM>-<NUM> may experience downlink to uplink self-interference based at least in part on the downlink <NUM> transmitted to UE <NUM>-<NUM> and the uplink <NUM> received from UE <NUM>-<NUM>. Additionally, BS <NUM>-<NUM> may experience interfering transmissions <NUM> from other wireless communication devices transmitting in the wireless network <NUM> (e.g., from a BS <NUM>-<NUM>). Moreover, UE <NUM>-<NUM> may experience interfering transmissions <NUM> and <NUM> from other wireless communication devices transmitting in the wireless network <NUM> (e.g., from the UE <NUM>-<NUM>, from the BS <NUM>-<NUM>, and/or the like).

As shown in <FIG>, an example wireless network <NUM> includes a UE <NUM>-<NUM> operating in a full-duplex operation mode. The UE <NUM>-<NUM> may transmit an uplink <NUM> to a BS <NUM>-<NUM> and may receive a downlink <NUM> from the BS <NUM>-<NUM>. In some aspects, the BS <NUM>-<NUM> may be operating in a full-duplex operation mode. The UE <NUM>-<NUM> may experience uplink to downlink self-interreference based at least in part on the uplink <NUM> transmitted to the BS <NUM>-<NUM> and the downlink <NUM> received from the BS <NUM>-<NUM>. The wireless network <NUM> may include other wireless communication devices, such as a BS <NUM>-<NUM> and a UE <NUM>-<NUM>. The BS <NUM>-<NUM> may transmit a downlink <NUM> to the UE-<NUM>-<NUM>. The UE <NUM>-<NUM> may experience an interfering transmission <NUM> and/or <NUM> based at least in part on the transmission of the BS <NUM>-<NUM> and/or the UE <NUM>-<NUM>. For example, the downlink transmitted <NUM> by the BS <NUM>-<NUM> may have an angular spread that may cause an interfering transmission <NUM> to be received by the UE <NUM>-<NUM>. Similarly, an uplink transmitted by the UE <NUM>-<NUM> may have an angular spread that may cause an interfering transmission <NUM> to be received by the UE <NUM>-<NUM>.

As shown in <FIG>, an example wireless network <NUM> includes a UE <NUM>-<NUM> operating in a full-duplex operation mode. The UE <NUM>-<NUM> may transmit an uplink <NUM> to a BS <NUM>-<NUM> and may receive a downlink <NUM> from a BS <NUM>-<NUM>. The UE <NUM>-<NUM> may include a multi transmission and reception (multi-TRP) architecture. The UE <NUM>-<NUM> may experience uplink to downlink self-interreference based at least in part on the uplink <NUM> transmitted to the BS <NUM>-<NUM> and the downlink <NUM> received from the BS <NUM>-<NUM>. The BS <NUM>-<NUM> and the BS <NUM>-<NUM> may be operating in a half-duplex mode of operation. The BS <NUM>-<NUM> may transmit a downlink <NUM>-<NUM> to a UE <NUM>-<NUM>. In some aspects, the UE <NUM>-<NUM> may experience one or more interfering transmissions based at least in part on the transmissions of BS <NUM>-<NUM>, BS <NUM>-<NUM>, and/or UE <NUM>-<NUM>.

<FIG> is a diagram illustrating one or more examples <NUM> of full-duplex types, in accordance with various aspects of the present disclosure. As described above, full-duplex operation may involve communications having both an uplink (UL) and a downlink (DL) at the same time (e.g., transmit and receive at the same time). The uplink and downlink may share resources (e.g., time resources and/or frequency resources) associated with the communications.

As shown in <FIG>, a full-duplex communication may be an in-band full duplex (IBFD) mode (e.g., a mode that includes an uplink and a downlink that share the same time resources and/or frequency resources). In some aspects, an IBFD mode may be a full overlap IBFD mode as shown at <NUM>, such that the downlink resources may completely overlap the uplink resources (e.g., all of the uplink resources are shared with the downlink resources). In some aspects, a full overlap IBFD mode as shown at <NUM> may have uplink resources that completely overlap the downlink resources. In some aspects, an IBFD communication may be a partial overlap IBFD mode as shown at <NUM>, such that the downlink resources do not completely overlap the uplink resources (e.g., only some of the uplink resources are shared with the downlink resources).

In some aspects, a full-duplex mode may be a sub-band frequency division duplex (FDD) mode as shown at <NUM> (e.g., a mode that includes an uplink and a downlink that share the same time resources, and use different frequency resources). In some aspects, the resources associated with the downlink and the resources associated with the uplink may be separated in the frequency domain by a guard band (GB) (e.g., a range of frequencies that are not allocated to the uplink or the downlink).

A wireless communication standard or governing body may specify how a wireless spectrum is to be used. For example, 3GPP may specify how wireless spectrum is to be used for the <NUM>/NR radio access technology and interface. As an example, a specification may indicate whether a band is to be used as paired spectrum or unpaired spectrum. A band in a paired spectrum may use a first frequency region for uplink communication and a second frequency region for downlink communication, where the first frequency region does not overlap the second frequency region. For example, a paired band may have an uplink operating band and a downlink operating band that are configured to use non-overlapped frequency regions. Some deployments may use frequency division duplexing (FDD) in the paired bands. Examples of paired bands in NR include NR operating bands n1, n2, n3, n5, n7, n8, n12, n20, n25, and n28, as specified by 3GPP Technical Specification (TS) <NUM>-<NUM>.

An unpaired band may allow downlink and uplink operations within a same frequency region (e.g., a same operating band). For example, an unpaired band may configure an uplink operating band and a downlink operating band in the same frequency range. Some deployments may use time division duplexing (TDD) in the unpaired band, where some time intervals (e.g., slots, sub-slots, and/or the like) are used for uplink communications and other time intervals are used for downlink communications. In this case, substantially the entire bandwidth of a component carrier may be used for a downlink communication or an uplink communication, depending on whether the communication is performed in a downlink slot, an uplink slot, or a special slot (in which downlink or uplink communications can be scheduled). Examples of unpaired bands include NR operating bands n40, n41, and n50, as specified by 3GPP TS <NUM>-<NUM>.

In some cases, it may be inefficient to use TDD in an unpaired spectrum. For example, uplink transmit power may be limited, meaning that UEs may not be capable of transmitting with enough power to efficiently utilize the full bandwidth of an uplink slot. This may be particularly problematic in large cells at the cell edge. Furthermore, the usage of TDD may introduce latency relative to a scheme in which uplink communications and downlink communications can be performed in the same time interval, since a given time interval may be used for only uplink communication or for only downlink communication using TDD. However, frequency domain resource assignment (FDRA) for a bandwidth part (BWP) in the case of FDD in an unpaired spectrum may be problematic due to a gap between a first frequency region of the FDRA and a second frequency region of the FDRA (e.g., due to the BWP being disjointed).

<FIG> illustrates a top-perspective 700A and a side-perspective 700B of a panel architecture for a full duplex gNB in accordance with an aspect of the disclosure. The panel architecture depicted in <FIG> which comprises Panels #<NUM> and #<NUM> that may support simultaneous Tx and Rx operations, and may help to improve isolation to reduce self-interference (e.g., >50dB). In an example, Panel #<NUM> may be used for DL transmission at both edges of a respective BWP, while Panel #<NUM> is used for UL reception at a middle of the respective BWP.

<FIG> illustrates an example resource allocation <NUM> for a FDD BS and one or more UEs in accordance with an aspect of the disclosure. In particular, slots <NUM> and <NUM> are configured as SBFD slots, with a first disjoint BWP DL segment (e.g., <NUM>-<NUM> or <NUM>-<NUM> for slots <NUM> and <NUM>, respectively) and a second disjoint BWP DL segment (e.g., <NUM>-<NUM> or <NUM>-<NUM> for slots <NUM> and <NUM>, respectively). In some designs, the first and second BWP DL segments may be associated with DL transmissions to different UEs. The first and second disjoint BWP DL segments are separated by a BWP UL segment (e.g., PUSCH) and guard bands (GBs). In some designs, the BWP UL segment may be associated with UL transmissions from one or more of the different UEs.

In <FIG>, the resource allocation <NUM> is based on the underlying panel architecture depicted in <FIG>. For the SBFD slots <NUM>-<NUM>, in some designs, greater than <NUM> dB isolation may be arranged between the UL and DL BWP segments. In some designs, Weighted Overlap Add (WOLA) processing at Receiver (Rx-WOLA) may be implemented to reduce adjacent channel leakage power ratio (ACLR) to the UL BWP segment. For example, ACLR is defined as the ratio of the transmitted power on the assigned channel (e.g., DL BWP segment(s)) to the power received in the adjacent radio channel (e.g., UL BWP segment) after a receive filter. In this case, WOLA processing may be used on the DL BWP segment(s) to reduce ACLR to the UL BWP segment (e.g., if too high, ACLR from DL BWP segment(s) can interfere with transmissions on the UL BWP segment). WOLA processing is a well-known time-domain windowing methodology to improve spectral containment of a cyclic prefix (CP) OFDM signal to support mixed numerology and asynchronous traffic at the receive filter. WOLA processing helps to filter out interfering signals, which in turn reduces the ACLR. In some designs, analog low pass filtering (LPF) may be used to improve analog to digital conversion (ADC) dynamic range. In some designs, Rx automatic gain control (AGC) states may be configured to improve the noise figure (NF). In some designs, a digital integrated circuit (IC) of the ACLR leakage may exceed <NUM> dB, and a non-linear model may be configured per each Tx-Rx pair.

A power headroom report (PHR) reports the headroom between the current UE transmit power (estimated power) and the nominal power. For example, the serving cell may use the PHR to estimate how much uplink bandwidth the UE is permitted to use for a particular subframe. The PHR may be triggered by PHR functional configuration or reconfiguration, cell activation, periodically, or by variation in pathloss or a power-backoff (P-MPRc) prior to a next periodic trigger for PHR.

The gNB is aware of the PHR differences for different waveforms (e.g., CP-OFDM, DFT-S-OFDM, etc.). The UE's power headroom report may be based upon corresponding PUSCH transmission(s). For example, the packet headroom (PH) calculation for a PUSCH may be determined as follows: <MAT> whereby Pcmax is a configured maximum transmission (or output) power defined in 3GPP TS <NUM>.

<FIG> illustrates PHR 900A of a MAC CE in accordance with an aspect of the disclosure. In <FIG>, a Type <NUM> (or PUSCH) PH value is specified with respect to a configured uplink bandwidth from a UE to a PCell, and PCMAX,f,c is specified. The PCMAX,f,c is the maximum transmission power permitted on the configured uplink bandwidth, and the PH value corresponds to a difference between a current (or instantaneous) transmission power and PCMAX,f,c.

In some designs, the PH value can be indexed to one of <NUM> PH value levels, e.g.:.

The PH levels may in turn be mapped to PH ranges (in dBs), e.g.:.

The PCMAX,f,c can likewise vary between cells, and can be indexed to one of <NUM> nominal UE transmit power (PCMAX) levels, e.g.:.

The PCMAX levels may in turn be mapped to PCMAX,f,c ranges (in dBs), e.g.:.

<FIG> illustrates PHR 900B of a MAC CE in accordance with another aspect of the disclosure. In <FIG>, a PH value and PCMAX,f,c are specified with respect to a plurality of cells. For example, the Ci field indicates the presence of a PH field for the Serving Cell with ServCellIndex i as specified in TS <NUM>. The Ci field set to <NUM> indicates that a PH field for the Serving Cell with ServCellIndex i is reported. The Ci field set to <NUM> indicates that a PH field for the Serving Cell with ServCellIndex i is not reported.

In <FIG>, each PH value in the respective PHR is reported as one number (e.g., see Tables <NUM> and <NUM> above) that provides the difference between the maximum transmission power (PCMAX,f,c) that the UE can support and the actual transmission power. In some designs, a bandwidth associated with a particular cell may comprise sub-bands associated with different transmission powers, PH values, and/or PCMAX,f,c values. In some cases, providing a single PH value and/or a single PCMAX,f,c value across the bandwidth may provide insufficient precision to mitigate self-interference at FD UEs and/or at gNB for FD-aware UEs. Aspects of the disclosure are thereby directed to a PHR comprising PH values associated multiple sub-bands of a respective bandwidth for an uplink transmission, whereby the sub-bands are associated with different transmission power levels. Such aspects may provide various technical advantages, such as power control functionality at a finer granularity and improved management of self-interference for FD-aware and/or FD-capable UEs.

<FIG> illustrates an exemplary process <NUM> of wireless communications according to an aspect of the disclosure. The process <NUM> of <FIG> is performed by a UE, such as UE <NUM>.

At <NUM>, the UE (e.g., antennas 252a. 252r, modulator/demodulator 254a. 254r, Tx MIMO processor <NUM>, transmit processor <NUM>, etc.) optionally transmits, to a network component (e.g., a serving cell or gNB, a core network component, etc.) an indication of a capability of the UE to support sub-band power headroom value reporting. In some designs, the UE capability may be expressed in terms of the number of sub-bands (e.g., <NUM>, <NUM>, <NUM>, etc.) for which the UE can report PHR.

At <NUM>, the UE (e.g., antennas 252a. 252r, modulator/demodulator 254a. 254r, MIMO detector <NUM>, receive processor <NUM>, etc.) optionally receives, from a network component (e.g., a serving cell or gNB, a core network component, etc.), at least one sub-band PHR reporting parameter. For example, the at least one sub-band PHR reporting parameter may comprise conditions which, when satisfied, will trigger the UE to transmit a sub-band PHR. In some designs, the at least one sub-band PHR reporting parameter may comprise a difference in UL transmission power per sub-band with a minimum threshold, a difference in PH value per sub-band, a minimum bandwidth per sub-band that should be met to report PHR, or any combination thereof. In some designs, the at least one sub-band PHR reporting parameter may be configured based on (in response to) the optional UE capability indication from <NUM>.

At <NUM>, the UE (e.g., controller/processor <NUM>, etc.) determines a transmission power configuration for an uplink transmission on a first bandwidth, the first bandwidth comprising a first sub-band and a second sub-band, the first sub-band associated with a first set of transmission power levels and the second sub-band associated with a second set of transmission power levels that is different than the first set of transmission power levels. In some designs, at least one additional sub-band may also be part of the first bandwidth. In some designs, the uplink transmission is associated with (or corresponds to) a PUSCH or an SRS.

At <NUM>, the UE (e.g., antennas 252a. 252r, modulator/demodulator 254a. 254r, Tx MIMO processor <NUM>, transmit processor <NUM>, etc.) transmits a PHR that indicates first and second sub-band headroom values associated with the first and second sub-bands, respectively. In some designs, the PHR may include the first and second sub-band headroom values. In other designs, the PHR may include information by which the first and second headroom values can be derived (e.g., differential reporting, e.g., the first sub-band headroom value may be included in conjunction with an offset between the first sub-band headroom value and the second sub-band headroom value, etc.). As will be described in more detail below, the sub-bands for which PHR is reported can be defined in a variety of ways (e.g., by transmission power, by PH value, etc.). In some designs, the PHR may be transmitted as part of a MAC CE (e.g., a MAC CE that is modified from the examples depicted in <FIG> which supports PH value reporting per sub-band for a respective cell).

<FIG> illustrates an exemplary process <NUM> of wireless communications according to an aspect of the disclosure. The process <NUM> of <FIG> is performed by a network component, such as BS <NUM> or a core network component such as network controller <NUM>.

At <NUM>, the network component (e.g., antennas 234a. 234r, modulator/demodulator 232a. 232r, MIMO detector <NUM>, receive processor <NUM>, communication unit <NUM>, etc.) optionally receives, from a UE, an indication of a capability of the UE to support sub-band power headroom value reporting. In some designs, the UE capability may be expressed in terms of the number of sub-bands (e.g., <NUM>, <NUM>, <NUM>, etc.) for which the UE can report PHR.

At <NUM>, the network component (e.g., antennas 234a. 234r, modulator/demodulator 232a. 232r, Tx MIMO processor <NUM>, transmit processor <NUM>, communication unit <NUM>, etc.) optionally transmits, to the UE, at least one sub-band PHR reporting parameter. For example, the at least one sub-band PHR reporting parameter may comprise conditions which, when satisfied, will trigger the UE to transmit a sub-band PHR. In some designs, the at least one sub-band PHR reporting parameter may comprise a difference in UL transmission power per sub-band with a minimum threshold, a difference in PH value per sub-band, a minimum bandwidth per sub-band that should be met to report PHR, or any combination thereof. In some designs, the at least one sub-band PHR reporting parameter may be configured based on (in response to) the optional UE capability indication from <NUM>.

At <NUM>, the network component (e.g., antennas 234a. 234r, modulator/demodulator 232a. 232r, MIMO detector <NUM>, receive processor <NUM>, communication unit <NUM>, etc.) receives, from the UE, a PHR that indicates first and second sub-band headroom values associated with a first sub-band and a second sub-band, respectively, the first and second sub-bands comprising at least part of a first bandwidth associated with a transmission power configuration for an uplink transmission from the UE, the first sub-band associated with a first set of transmission power levels and the second sub-band associated with a second set of transmission power levels that is different than the first set of transmission power levels. For example, the PHR received at <NUM> may correspond to the PHR transmitted by the UE at <NUM> of <FIG>. In some designs, the PHR may include the first and second sub-band headroom values. In other designs, the PHR may include information by which the first and second headroom values can be derived (e.g., differential reporting, e.g., the first sub-band headroom value may be included in conjunction with an offset between the first sub-band headroom value and the second sub-band headroom value, etc.). In some designs, at least one additional sub-band may also be part of the first bandwidth. In some designs, the uplink transmission is associated with (or corresponds to) a PUSCH or an SRS.

At <NUM>, the network component (e.g., controller/processor <NUM>, etc.) performs a power control function associated with the UE based at least in part upon the PHR. In some designs, the power control function (e.g., increasing or decreasing transmission power via one or more power control commands) may be similar to a typical power control function performed based on a legacy PHR, except that the power control function at <NUM> may be performed per sub-band rather than per-bandwidth, and as such may be performed at a finer granularity (i.e., with more precision).

Referring to <FIG>, in some designs, the PHR may associated with a PUSCH transmission (Type <NUM>), whereby a PH value is determined as follows: <MAT> whereby PO_PUSCH,b,f,c M, and α may be specific to a respective sub-band.

Referring to <FIG>, in some designs, the PHR may associated with an SRS transmission (Type <NUM>), whereby a PH value is determined as follows: <MAT> whereby PO_SRS,b,f,c M, and α may be specific to a respective sub-band.

Referring to Equations <NUM>-<NUM>, α may be used to accommodate a modulation and coding scheme (MCS) per sub-band (e.g., higher MCS may need higher transmission power). So, if the UE uses a different MCS in different sub-bands, α can be configured differently per sub-band.

<FIG> illustrates a sub-band PHR configuration <NUM> associated with a bandwidth <NUM> for an uplink transmission in accordance with an aspect of the disclosure. In <FIG>, the bandwidth <NUM> may comprise three sub-bands denoted SB1, SB2 and SB3. SB1 and SB3 are 'edge' sub-bands, whereas SB2 is a 'center' sub-band. For example, the bandwidth <NUM> may correspond to the PUSCH of slots <NUM> or <NUM> of <FIG>, with SB1 and SB3 being closer (in frequency) to the respective top/bottom DL data parts (separated by a respective guard band). In <FIG>, a first sub-band PHR <NUM> (or sub-band PH value) may be associated with SB1, a second sub-band PHR <NUM> (or sub-band PH value) may be associated with SB2, and a third sub-band PHR <NUM> (or sub-band PH value) may be associated with SB3.

Referring to <FIG>, in some designs, the first set of transmission power levels includes a plurality of different transmission power levels. In other designs, the second set of transmission power levels may also include a plurality of different transmission power levels. In other words, sub-bands need not comprise a common transmission power across their entire frequency range. In such cases, in an example, a representative PH value (and/or PCMAX value) may be provided in the PHR for that sub-band. In a specific example, the first sub-band headroom value associated with the first sub-band may be based on an average of the plurality of different transmission power levels (e.g., a weighted average based on a proportion of each transmission power across the respective sub-band). An example of such a transmission power configuration is described below with respect to <FIG>.

<FIG> illustrates a sub-band PHR configuration <NUM> associated with a bandwidth <NUM> for an uplink transmission in accordance with another aspect of the disclosure. In <FIG>, the bandwidth <NUM> may comprise three sub-bands denoted SB1, SB2 and SB3. SB1 and SB3 are 'edge' sub-bands, whereas SB2 is a 'center' sub-band. For example, the bandwidth <NUM> may correspond to the PUSCH of slots <NUM> or <NUM> of <FIG>, with SB1 and SB3 being closer (in frequency) to the respective top/bottom DL data parts (separated by a respective guard band). In <FIG>, a first sub-band PHR <NUM> (or sub-band PH value) may be associated with SB1, a second sub-band PHR <NUM> (or sub-band PH value) may be associated with SB2, and a third sub-band PHR <NUM> (or sub-band PH value) may be associated with SB3.

Referring to <FIG>, SB1 is associated with transmission powers TX1 and TX2, SB2 is associated with transmission powers TX3, TX4 and TX5, and SB3 is associated with transmission powers TX6 and TX7. In this example, transmission power is generally lower at edge sub-bands (SB1 and SB3) and generally higher at center sub-band(s) (SB2). Such a transmission power configuration may be particularly advantageous for FD-capable UEs subject to self-interference on an adjacent bandwidth (e.g., top/bottom DL data parts as shown at slots <NUM>-<NUM> of <FIG>). So, by lowering transmission power specifically at the edges of the UL bandwidth <NUM>, self-interference with respect to the UE's DL data in adjacent bandwidth parts can be reduced and/or minimized.

Referring to <FIG>, in some designs, the first and second sub-bands are each associated with a respective common transmission power level. In other words, the first and second sets of transmission power levels may comprise a single respective transmission power. An example of such a transmission power configuration is described below with respect to <FIG>.

Referring to <FIG>, SB1 is associated with transmission power TX1, SB2 is associated with transmission power TX2, and SB3 is associated with transmission power TX3. In this example, transmission power is generally lower at edge sub-bands (SB1 and SB3) and generally higher at center sub-band(s) (SB2). Such a transmission power configuration may be particularly advantageous for FD-capable UEs subject to self-interference on an adjacent bandwidth (e.g., top/bottom DL data parts as shown at slots <NUM>-<NUM> of <FIG>). So, by lowering transmission power specifically at the edges of the UL bandwidth <NUM>, self-interference with respect to the UE's DL data in adjacent bandwidth parts can be reduced and/or minimized.

Referring to <FIG>, in some designs, some sub-band(s) may be associated with multiple transmission powers as in <FIG>, while other sub-band(s) may be associated with a common transmission power as in <FIG>.

Referring to <FIG>, in some designs, the first and second sub-bands are each associated with a respective common sub-band headroom value. With respect to <FIG> as an example, different parts of the UL bandwidth <NUM> may be associated with both different instantaneous transmission powers and different maximum transmission powers (PCMAX), yet their respective PH values may be the same. In such cases, these parts can be aggregated as part of the same sub-band in terms of PHR reporting. In some designs, only contiguous bandwidth sections may be grouped into a sub-band in this manner. In other designs, depending on how the sub-band is characterized in the PHR, even non-contiguous bandwidth sections (with same PH value) can be grouped into a respective sub-band.

Referring to <FIG>, in some designs, the sub-bands may be defined in the PHR via a start and length indication. For example, SB1 is from RB1_start to RB1_start + Length1, SB2 is from RB2_start to RB2_start + Length2, and SB3 is from RB3_start to RB3_start + Length3. In other designs, the first sub-band is defined by a start and length, the second band is defined from the end of band <NUM> to the length of the second band and so. For example, SB1 is from RB1_start to RB1 start + Length1, SB2 is from RB1_start + Length1 to RB1_start + Length1 + Length2, and SB3 is from RB1_start + Length1 + Length <NUM> to RB1_start + Length1 + Length2 + Length3. Such sub-band definitions may be used in scenarios where sub-bands comprise contiguous frequency-domain resources.

Referring to <FIG>, in some designs as noted above, the first bandwidth is adjacent (e.g., subject to guard band) to a second bandwidth (e.g., top or bottom DL data part in slots <NUM>-<NUM> of <FIG>) associated with a downlink transmission for the same UE (i.e., an FD-capable UE). In this case, the UE will experience more self-interference on uplink transmissions on sub-bands nearer to the second bandwidth. So, if the first sub-band is nearer to the second bandwidth, the first set of transmission power levels associated with the first sub-band may be lower relative to the second set of transmission power levels associated with the second sub-band. This scenario is depicted in both <FIG>.

Referring to <FIG>, in other designs, the UE may be 'FD-aware' rather than FD-capable (or alternatively, may be FD-capable but may not be scheduled for DL data on any bandwidths adjacent to the UL bandwidth). An FD-aware UE knows that the adjacent bandwidth (e.g., subject to guard band) is scheduled for DL transmission to another UE by the same serving cell. So, there will be more interference at the serving cell with respect to the UE's uplink transmission at the edge sub-bands which are nearer to this DL transmission in terms of frequency. In such cases, assume that the first sub-band (e.g., SB1 or SB3) is nearer to the second bandwidth (e.g., top or bottom DL data part in slots <NUM>-<NUM> of <FIG>). In contrast to <FIG>, the first set of transmission power levels associated with the first sub-band may be higher relative to the second set of transmission power levels associated with the second sub-band, as shown in <FIG>.

Referring to <FIG>, SB1 is associated with transmission powers TX1 and TX2, SB2 is associated with transmission powers TX3, TX4 and TX5, and SB3 is associated with transmission powers TX6 and TX7. In this example, transmission power is generally higher at edge sub-bands (SB1 and SB3) and generally lower at center sub-band(s) (SB2). Such a transmission power configuration may be particularly advantageous for FD-aware UEs where edge sub-bands (SB1/SB3) are subject to interference on an adjacent bandwidth (e.g., top/bottom DL data parts as shown at slots <NUM>-<NUM> of <FIG>) at a serving cell (or gNB) with respect to that serving cell's DL transmission to another UE. So, by increasing transmission power specifically at the edges of the UL bandwidth <NUM>, interference with respect to the UE's edge sub-band transmission and the DL data transmission at the gNB can be reduced and/or minimized.

<FIG> illustrates a PHR <NUM> of a MAC CE in accordance with an aspect of the disclosure. In <FIG>, a PH value and PCMAX,f,c may be specified for up to seven (<NUM>) sub-bands of a bandwidth associated with a respective cell. For example, if Si = <NUM>, then a PH value (and associated PCMAX,f,c value) is reported for sub-band i, and if Si = <NUM>, then a PH value (and associated PCMAX,f,c value) is not reported for sub-band i.

<FIG> is a conceptual data flow diagram <NUM> illustrating the data flow between different means/components in exemplary apparatuses <NUM> and <NUM> in accordance with an aspect of the disclosure. The apparatus <NUM> may be a UE (e.g., UE <NUM>) in communication with an apparatus <NUM>, which may be a base station (e.g., base station <NUM>) or a core network component (e.g., network controller <NUM>).

The apparatus <NUM> includes a transmission component <NUM>, which may correspond to transmitter circuitry in UE <NUM> as depicted in <FIG>, including controller/processor <NUM>, antenna(s) 252a. 252r, modulators(s) 254a. 254r, TX MIMO processor <NUM>, TX processor <NUM>. The apparatus <NUM> further includes sub-band PHR component <NUM>, which may correspond to processor circuitry in UE <NUM> as depicted in <FIG>, including controller/processor <NUM>, etc. The apparatus <NUM> further includes a reception component <NUM>, which may correspond to receiver circuitry in UE <NUM> as depicted in <FIG>, including controller/processor <NUM>, antenna(s) 252a. 252r, demodulators(s) 254a. 254r, MIMO detector <NUM>, RX processor <NUM>.

The apparatus <NUM> includes a reception component <NUM>, which may correspond to receiver circuitry in BS <NUM> as depicted in <FIG>, including controller/processor <NUM>, antenna(s) 234a. 234r, demodulators(s) 232a. 232r, MIMO detector <NUM>, RX processor <NUM>, communication unit <NUM>. The apparatus <NUM> further includes a sub-band PHR component <NUM>, which may correspond to processor circuitry in BS <NUM> or network controller <NUM> as depicted in <FIG>, including controller/processor <NUM> or controller/processor <NUM>. The apparatus <NUM> further includes a transmission component <NUM>, which may correspond to transmission circuitry in BS <NUM> or network controller <NUM> as depicted in <FIG>, including e.g., controller/processor <NUM>, antenna(s) 234a. 234r, modulators(s) 232a. 232r, Tx MIMO processor <NUM>, TX processor <NUM>, communication unit <NUM>, communication unit <NUM>, etc..

Referring to <FIG>, the transmission component <NUM> transmits a PHR (e.g., in a MAC CE) with sub-band PH values to the reception component <NUM>. The sub-band PHR component <NUM> optionally transmits UL power control commands to the reception component <NUM> based on the PHR. The PHR may be associated with respective uplink traffic data (e.g., SRS, PUSCH, etc.) that is optionally transmitted by the transmission component <NUM> to the reception component <NUM>. The sub-band PHR component <NUM> may further optionally direct the transmission component <NUM> to transmit a UE PHR capability (e.g., for sub-band PHR reporting) to the reception component <NUM>. The sub-band PHR component <NUM> may optionally direct the transmission component <NUM> to transmit sub-band PHR reporting parameter(s) to the reception component <NUM> based on the UE PHR capability, which may in turn be used to manage the transmission of PHRs at the sub-band PHR component <NUM>.

One or more components of the apparatus <NUM> and apparatus <NUM> may perform each of the blocks of the algorithm in the aforementioned flowcharts of <FIG>. As such, each block in the aforementioned flowcharts of <FIG> may be performed by a component and the apparatus <NUM> and apparatus <NUM> may include one or more of those components.

<FIG> is a diagram <NUM> illustrating an example of a hardware implementation for an apparatus <NUM> employing a processing system <NUM>. The processing system <NUM> may be implemented with a bus architecture, represented generally by the bus <NUM>. The bus <NUM> may include any number of interconnecting buses and bridges depending on the specific application of the processing system <NUM> and the overall design constraints. The bus <NUM> links together various circuits including one or more processors and/or hardware components, represented by the processor <NUM>, the components <NUM>, <NUM> and <NUM>, and the computer-readable medium / memory <NUM>. The bus <NUM> may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further.

The processing system <NUM> may be coupled to a transceiver <NUM>. The transceiver <NUM> is coupled to one or more antennas <NUM>. The transceiver <NUM> provides a means for communicating with various other apparatus over a transmission medium. The transceiver <NUM> receives a signal from the one or more antennas <NUM>, extracts information from the received signal, and provides the extracted information to the processing system <NUM>, specifically the reception component <NUM>. In addition, the transceiver <NUM> receives information from the processing system <NUM>, specifically the transmission component <NUM>, and based on the received information, generates a signal to be applied to the one or more antennas <NUM>. The processing system <NUM> includes a processor <NUM> coupled to a computer-readable medium / memory <NUM>. The processor <NUM> is responsible for general processing, including the execution of software stored on the computer-readable medium / memory <NUM>. The software, when executed by the processor <NUM>, causes the processing system <NUM> to perform the various functions described supra for any particular apparatus. The computer-readable medium / memory <NUM> may also be used for storing data that is manipulated by the processor <NUM> when executing software. The processing system <NUM> further includes at least one of the components <NUM>, <NUM> and <NUM>. The components may be software components running in the processor <NUM>, resident/stored in the computer readable medium / memory <NUM>, one or more hardware components coupled to the processor <NUM>, or some combination thereof. The processing system <NUM> may be a component of the UE <NUM> of <FIG> and may include the memory <NUM>, and/or at least one of the TX processor <NUM>, the RX processor <NUM>, and the controller/processor <NUM>.

In one configuration, the apparatus <NUM> (e.g., a UE) for wireless communication includes means for determining a transmission power configuration for an uplink transmission on a first bandwidth, the first bandwidth comprising a first sub-band associated with a first set of transmission power levels and a second sub-band associated with a second set of transmission power levels that is different than the first set of transmission power levels, and means for transmitting a power headroom report (PHR) that comprises first and second sub-band headroom values associated with the first and second sub-bands, respectively.

The aforementioned means may be one or more of the aforementioned components of the apparatus <NUM> and/or the processing system <NUM> of the apparatus <NUM> configured to perform the functions recited by the aforementioned means. As described supra, the processing system <NUM> may include the TX processor <NUM>, the RX processor <NUM>, and the controller/processor <NUM>.

The processing system <NUM> may be coupled to a transceiver <NUM>. The transceiver <NUM> is coupled to one or more antennas <NUM>. The transceiver <NUM> provides a means for communicating with various other apparatus over a transmission medium. The transceiver <NUM> receives a signal from the one or more antennas <NUM>, extracts information from the received signal, and provides the extracted information to the processing system <NUM>, specifically the reception component <NUM>. In addition, the transceiver <NUM> receives information from the processing system <NUM>, specifically the transmission component <NUM>, and based on the received information, generates a signal to be applied to the one or more antennas <NUM>. The processing system <NUM> includes a processor <NUM> coupled to a computer-readable medium / memory <NUM>. The processor <NUM> is responsible for general processing, including the execution of software stored on the computer-readable medium / memory <NUM>. The software, when executed by the processor <NUM>, causes the processing system <NUM> to perform the various functions described supra for any particular apparatus. The computer-readable medium / memory <NUM> may also be used for storing data that is manipulated by the processor <NUM> when executing software. The processing system <NUM> further includes at least one of the components <NUM>, <NUM> and <NUM>. The components may be software components running in the processor <NUM>, resident/stored in the computer readable medium / memory <NUM>, one or more hardware components coupled to the processor <NUM>, or some combination thereof. The processing system <NUM> may be a component of the BS <NUM> or network controller <NUM> of <FIG> and may include the memory <NUM>, and/or at least one of the TX processor <NUM>, the RX processor <NUM>, the controller/processor <NUM>, the communication unit <NUM>, controller/processor <NUM> and/or memory <NUM>.

In one configuration, the apparatus <NUM> (e.g., a BS or core network component such as network controller <NUM>) for wireless communication may include means for receiving, from a user equipment (UE), a power headroom report (PHR) that comprises first and second sub-band headroom values associated with first and second sub-bands, the first and second sub-bands comprising at least part of a first bandwidth associated with a transmission power configuration for an uplink transmission from the UE, the first sub-band associated with a first set of transmission power levels and the second sub-band associated with a second set of transmission power levels that is different than the first set of transmission power levels, and means for performing a power control function associated with the UE based at least in part upon the PHR.

In the detailed description above it can be seen that different features are grouped together in examples. This manner of disclosure should not be understood as an intention that the example clauses have more features than are explicitly mentioned in each clause. Rather, the various aspects of the disclosure may include fewer than all features of an individual example clause disclosed.

Claim 1:
A full-duplex, FD, or FD-aware user equipment, UE, (<NUM>) comprising:
a memory (<NUM>);
at least one transceiver (<NUM>); and
at least one processor (<NUM>) communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
determine (<NUM>) a transmission power configuration for an uplink transmission on a first bandwidth of a bandwidth part, BWP, the first bandwidth comprising a first sub-band and a second sub-band, the first sub-band associated with a first set of one or more transmission power levels and the second sub-band associated with a second set of one or more transmission power levels that is different than the first set of transmission power levels; and
transmit, (<NUM>) via the at least one transceiver, a power headroom report, PHR, that indicates first and second sub-band headroom values associated with the first and second sub-bands, respectively.