Patent Description:
For example, a fifth generation (<NUM>) wireless communications technology (which may be referred to as new radio (NR)) is envisaged to expand and support diverse usage scenarios and applications with respect to current mobile network generations. In an aspect, <NUM> communications technology may include: enhanced mobile broadband addressing human-centric use cases for access to multimedia content, services and data; ultra-reliable-low latency communications (URLLC) with certain specifications for latency and reliability; and massive machine type communications, which may allow a very large number of connected devices and transmission of a relatively low volume of non-delay-sensitive information. As the demand for mobile broadband access continues to increase, however, further improvements in NR communications technology and beyond may be desired.

In a wireless communication network, one or more base stations (also known as transmission-reception points (TRPs)) may transmit and/or receive information to and/or from a user equipment (UE) via one or more communication channels. The one or more BSs and the UE may use a physical cell identification (PCI) during the communication session for bit scrambling, signal generation, or other tasks associated with wireless communications. However, when multiple TRPs are used to communicate with the UE, it is unclear which PCI to use. Therefore, improvements may be desirable.

<CIT> discloses: A base station may identify an association between a set of physical cell identifiers (PCIs) identifying different transmission reception points (TRPs) and a set of transmission configuration indicator (TCI) states for a user equipment (UE). The base station may transmit a TCI state and PCI association indication to the UE. The UE may receive a downlink transmission using a receive beam associated with a TCI state, and may identify a PCI of the set of PCIs to use to decode the received downlink transmission. In cases where the TCI state used to receive the downlink transmission is associated with multiple PCIs, the UE may select a default PCI from the multiple PCIs, and may decode the received transmission accordingly. In some examples, the UE may receive reference signals from one or more of the serving TRPs and may identify a PCI to use to decode the received reference signals.

<CIT> discloses a mechanism for conducting a communication between at least one communication network control element such as an eNB and at least one communication element such as a UE wherein a DM RS based communication mode is used. DMRS (scrambling) sequences are generated wherein each DMRS sequence comprises a set of calculation parameters being specific for the respective DMRS sequence, wherein the set of calculation parameters is configurable by the eNB during communication. For initializing each of the at least one scrambling sequence before receiving the configuration information, i.e. in an initial phase of the communication, a predetermined default valuebased on e.g. anUE_ID and being selectable from a set of predetermined default values is used for the set of calculation parameters in each DMRS sequence.

Aspects of the present disclosure include methods for receiving a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, establishing a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs, and determining one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

Other aspects of the present disclosure include a user equipment (UE) having a memory comprising instructions, a transceiver, and one or more processors operatively coupled with the memory and the transceiver, the one or more processors configured to execute instructions in the memory to receive a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, establish a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs, and determine one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

An aspect of the present disclosure includes a UE including means for receiving a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, means for establishing a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs, and means for determining one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

Some aspects of the present disclosure include non-transitory computer readable media having instructions stored therein that, when executed by one or more processors of a UE, cause the one or more processors to receive a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, establish a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs, and determine one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

Aspects of the present disclosure include methods for transmitting a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings and establishing a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs.

Other aspects of the present disclosure include a (base station) BS having a memory comprising instructions, a transceiver, and one or more processors operatively coupled with the memory and the transceiver, the one or more processors configured to execute instructions in the memory to transmit a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings and establish a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs.

An aspect of the present disclosure includes a BS including means for transmitting a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings and means for establishing a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs.

Some aspects of the present disclosure include non-transitory computer readable media having instructions stored therein that, when executed by one or more processors of a BS, cause the one or more processors to transmit a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings and establish a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs.

Storage media may be any available media that may be accessed by a computer. By way of example, and not limitation, such computer-readable media may comprise a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that may be used to store computer executable code in the form of instructions or data structures that may be accessed by a computer.

In one implementation, a serving cell may include one or more base stations (BSs) (e.g., transmission-reception points (TRPs)) for transmitting and/or receiving information to/from a user equipment (UE). The serving cell may have a physical cell identification (PCI) used by the TRPs and/or the UE for bit scrambling (e.g., physical broadcast channel (PBCH), physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), etc.), time and/or frequency hopping pattern generations, demodulation reference signal sequence (DMRS) generations, and/or control resource set (CORESET) mapping.

For example, for PUSCH/PDSCH/PDCCH/PUCCH format <NUM>, <NUM>, <NUM>, bits prior to modulation may be scrambled by the PCI if no scrambling ID is configured. Time/frequency hopping pattern of sequence properties for sequence carrying information/DMRS in PUCCH format <NUM>,<NUM>,<NUM>,<NUM> may be determined based on the PCI if no corresponding determination ID is configured. Sequence properties may include sequence group, sequence number, and cyclic shift. When transform precoding is disabled or enabled, DMRS sequence for PUSCH/PDSCH/PDCCH may be determined based on the PCI if no corresponding determination ID is configured. For interleaved control channel element (CCE) to resource element group (REG) mapping for a CORESET, the interleaving pattern may be a function of a parameter n_shift, which may be the PCI if no radio resource control (RRC) configured n_shift is provided. In one example, for CORESET <NUM> configured by ControlResourceSetZero information element, n_shift may be equal to the PCI. For PBCH, bits prior to modulation may be scrambled by the PCI, and DMRS may be determined based on the PCI.

In some instances, L1/L2 based inter-cell mobility may be implemented in a communication network. Each serving cell may have multiple TRPs, which may be at different locations, and each TRP may have a different PCI, e.g. carried by the synchronization signal block (SSB) transmitted from this TRP. At a given time, the UE may be served by a subset of the serving cells (e.g., PCIs of the subset of the serving cells), which may be changed from time to time via L1 or L2 signaling, such as downlink control indicator (DCI) and/or medium access control (MAC) control element (CE). In certain instances, the UE may be configured with a group of serving cells with a single PCI per serving cell, and may be configured to measure L1 metrics per serving cell in the group, e.g. L1-RSRP/SINR/RSRQ. At each time, the UE may be served by a subset of the group of serving cells, which may be changed from time to time via L1 or L2 signaling. The BS (e.g., gNB) may determine the subset based on L1 report from the UE either to some selected serving cells or to an anchor serving cell in the group.

In certain instances, the selected subset of PCI(s) to serve the UE may change fast via L1/L2 signaling. For physical (PHY) processing with PCI as input, the PCI(s) may be determined to be used as the default input when no explicit input ID is signaled to the UE.

In some aspects of the present disclosure, the network (BS and/or UE) may determine the input PCI(s) with the following options for PHY processing in L1/L2 inter-cell mobility, where the selected subset of PCI(s) to serve the UE may change fast via L1/L2 signaling. In a first example, one PCI may be used as input, regardless of which subset of PCIs are selected to serve the UE. This PCI may be associated with the whole cell group, and may or may not be one PCI for a particular cell in the group. This PCI may be either explicitly signaled to UE, or implicitly determined by a rule. In one example, this PCI may be an anchor cell in the group, which is configured for broadcast, random access, measurement report, or other control/management purpose. In another example, this PCI may be the lowest/highest one in the group. In another example, a PCI may be one of the selected PCIs. The PCI may be explicitly signaled to the UE, or implicitly determined by a rule, e.g. the lowest/highest one in the subset. In another example, the targeted PCI for the PHY processing may be used. If a PHY processing is associated with a targeted PCI, e.g. for UE Tx/Rx to/from a cell, then corresponding PCI is used as input.

In certain aspects, the PHY processing may include payload scrambling for downlink (DL) and/or uplink (UL) control/data channels, DMRS sequence determination for DL/UL control/data channels, time/frequency hopping pattern of sequence properties for information/DMRS sequence for DL/UL control/data channels, interleaved control channel element (CCE) to resource element group (REG) mapping pattern for a CORESET, and/or sequence determination for DL/UL reference signals for measurement, e.g. channel state indicator (CSI) reference signals (RS), sounding reference signals (SRS), positioning reference signals (PRS), etc. The determined PCI is used at least as default input when no explicit input ID is signaled to the UE.

The wireless communications system (also referred to as a wireless wide area network (WWAN)) includes at least one BS <NUM>, UEs <NUM>, an Evolved Packet Core (EPC) <NUM>, and a <NUM> Core (5GC) <NUM>. The BS <NUM> may include macro cells (high power cellular base station) and/or small cells (low power cellular base station). In one implementation, the UE <NUM> may include a communication component <NUM> and/or a determination component <NUM>. The communication component <NUM> and/or a modem <NUM> of the UE <NUM> may be configured to communicate with the BS <NUM> via a cellular network, a Wi-Fi network, or other wireless and wired networks. The UE <NUM> may include a determination component <NUM> for determining the PCIs for PHY processings. In some implementations, the BS <NUM> may include a communication component <NUM> configured to communicate with the UE <NUM>.

A BS <NUM> configured for <NUM> Long-Term Evolution (LTE) (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC <NUM> through backhaul links interfaces <NUM> (e.g., S1, X2, Internet Protocol (IP), or flex interfaces). A BS <NUM> configured for <NUM> NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with 5GC <NUM> through backhaul links interfaces <NUM> (e.g., S1, X2, Internet Protocol (IP), or flex interface). In addition to other functions, the BS <NUM> may perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. The BS <NUM> may communicate directly or indirectly (e.g., through the EPC <NUM> or 5GC <NUM>) with each other over the backhaul links interfaces <NUM>. The backhaul links <NUM>, <NUM> may be wired or wireless.

The BS <NUM> may wirelessly communicate with the UEs <NUM>. Each of the BS <NUM> may provide communication coverage for a respective geographic coverage area <NUM>. For example, the small cell <NUM>' may have a coverage area <NUM>' that overlaps the coverage area <NUM> of one or more macro BS <NUM>. A network that includes both small cell and macro cells may be known as a heterogeneous network. The communication links <NUM> between the BS <NUM> and the UEs <NUM> may include uplink (UL) (also referred to as reverse link) transmissions from a UE <NUM> to a BS <NUM> and/or downlink (DL) (also referred to as forward link) transmissions from a BS <NUM> to a UE <NUM>. The BS <NUM> / UEs <NUM> may use spectrum up to Y MHz (e.g., <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or less carriers may be allocated for DL than for UL).

D2D communication may be through a variety of wireless D2D communications systems, such as for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) <NUM> standard, LTE, or NR.

A BS <NUM>, whether a small cell <NUM>' or a large cell (e.g., macro base station), may include an eNB, gNodeB (gNB), or other type of base station. Extremely high frequency (EHF) is part of the radio frequency (RF) in the electromagnetic spectrum. The mmW base station <NUM> may utilize beamforming <NUM> with the UE <NUM> to compensate for the path loss and short range.

The IP Services <NUM> may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a packet switched (PS) Streaming Service, and/or other IP services. The MBMS Gateway <NUM> may be used to distribute MBMS traffic to the BS <NUM> belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start/stop) and for collecting eMBMS related charging information.

The 5GC <NUM> may include a Access and Mobility Management Function (AMF) <NUM>, other AMFs <NUM>, a Session Management Function (SMF) <NUM>, and a User Plane Function (UPF) <NUM>. The AMF <NUM> is the control node that processes the signaling between the UEs <NUM> and the 5GC <NUM>.

The BS <NUM> may also be referred to as a gNB, Node B, evolved Node B (eNB), an access point, a base transceiver station, a radio base station, an access point, an access node, a radio transceiver, a NodeB, eNodeB (eNB), gNB, Home NodeB, a Home eNodeB, a relay, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. The BS <NUM> provides an access point to the EPC <NUM> or 5GC <NUM> for a UE <NUM>.

Referring to <FIG>, one example of an implementation of the UE <NUM> may include a modem <NUM> having a communication component <NUM> and/or the determination component <NUM>. The communication component <NUM> and/or the modem <NUM> of the UE <NUM> may be configured to communicate with the BS <NUM> via a cellular network, a Wi-Fi network, or other wireless and wired networks. The UE <NUM> may include a determination component <NUM> for determining the PCIs for PHY processings.

In some implementations, the UE <NUM> may include a variety of components, including components such as one or more processors <NUM> and memory <NUM> and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with the modem <NUM> and the communication component <NUM> to enable one or more of the functions described herein related to communicating with the BS <NUM>. Further, the one or more processors <NUM>, modem <NUM>, memory <NUM>, transceiver <NUM>, RF front end <NUM> and one or more antennas <NUM>, may be configured to support voice and/or data calls (simultaneously or non-simultaneously) in one or more radio access technologies. The one or more antennas <NUM> may include one or more antennas, antenna elements and/or antenna arrays.

In an aspect, the one or more processors <NUM> may include the modem <NUM> that uses one or more modem processors. The various functions related to the communication component <NUM> and/or the determination component <NUM> may be included in the modem <NUM> and/or processors <NUM> and, in an aspect, may be executed by a single processor, while in other aspects, different ones of the functions may be executed by a combination of two or more different processors. For example, in an aspect, the one or more processors <NUM> may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiving device processor, or a transceiver processor associated with transceiver <NUM>. Additionally, the modem <NUM> may configure the UE <NUM> along with the processors <NUM>. In other aspects, some of the features of the one or more processors <NUM> and/or the modem <NUM> associated with the communication component <NUM> and/or the determination component <NUM> may be performed by transceiver <NUM>.

Also, memory <NUM> may be configured to store data used herein and/or local versions of applications <NUM> or the communication component <NUM>, the determination component <NUM>, and/or one or more subcomponents of the communication component <NUM> and/or the determination component <NUM> being executed by at least one processor <NUM>. Memory <NUM> may include any type of computer-readable medium usable by a computer or at least one processor <NUM>, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, non-volatile memory, and any combination thereof. In an aspect, for example, memory <NUM> may be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining the communication component <NUM>, the determination component <NUM>, and/or one or more of the subcomponents, and/or data associated therewith, when UE <NUM> is operating at least one processor <NUM> to execute the communication component <NUM>, the determination component <NUM>, and/or one or more of the subcomponents.

Receiver <NUM> may include hardware, firmware, and/or software code executable by a processor for receiving data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium). Receiver <NUM> may be, for example, a RF receiving device. In an aspect, the receiver <NUM> may receive signals transmitted by at least one BS <NUM>. Transmitter <NUM> may include hardware, firmware, and/or software code executable by a processor for transmitting data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium).

Moreover, in an aspect, UE <NUM> may include RF front end <NUM>, which may operate in communication with one or more antennas <NUM> and transceiver <NUM> for receiving and transmitting radio transmissions, for example, wireless communications transmitted by at least one BS <NUM> or wireless transmissions transmitted by UE <NUM>. RF front end <NUM> may be coupled with one or more antennas <NUM> and may include one or more low-noise amplifiers (LNAs) <NUM>, one or more switches <NUM>, one or more power amplifiers (PAs) <NUM>, and one or more filters <NUM> for transmitting and receiving RF signals.

In an aspect, LNA <NUM> may amplify a received signal at a desired output level. In an aspect, RF front end <NUM> may use one or more switches <NUM> to select a particular LNA <NUM> and the specified gain value based on a desired gain value for a particular application.

In an aspect, RF front end <NUM> may use one or more switches <NUM> to select a particular PA <NUM> and the specified gain value based on a desired gain value for a particular application.

Also, for example, one or more filters <NUM> may be used by RF front end <NUM> to filter a received signal to obtain an input RF signal. Similarly, in an aspect, for example, a respective filter <NUM> may be used to filter an output from a respective PA <NUM> to produce an output signal for transmission. In an aspect, each filter <NUM> may be coupled with a specific LNA <NUM> and/or PA <NUM>. In an aspect, RF front end <NUM> may use one or more switches <NUM> to select a transmit or receive path using a specified filter <NUM>, LNA <NUM>, and/or PA <NUM>, based on a configuration as specified by transceiver <NUM> and/or processor <NUM>.

In an aspect, transceiver may be tuned to operate at specified frequencies such that UE <NUM> may communicate with, for example, one or more BS <NUM> or one or more cells associated with one or more BS <NUM>. In an aspect, for example, the modem <NUM> may configure transceiver <NUM> to operate at a specified frequency and power level based on the UE configuration of the UE <NUM> and the communication protocol used by the modem <NUM>.

In an aspect, the modem <NUM> may be a multiband-multimode modem, which may process digital data and communicate with transceiver <NUM> such that the digital data is sent and received using transceiver <NUM>. In an aspect, the modem <NUM> may be multiband and be configured to support multiple frequency bands for a specific communications protocol. In an aspect, the modem <NUM> may be multimode and be configured to support multiple operating networks and communications protocols. In an aspect, the modem <NUM> may control one or more components of UE <NUM> (e.g., RF front end <NUM>, transceiver <NUM>) to enable transmission and/or reception of signals from the network based on a specified modem configuration. In an aspect, the modem configuration may be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration may be based on UE configuration information associated with UE <NUM> as provided by the network.

Referring to <FIG>, one example of an implementation of the BS <NUM> may include a modem <NUM> with a communication component <NUM> configured to transmit data. The communication component <NUM> and/or the modem <NUM> the BS <NUM> may be configured to communicate with the UE <NUM> via a cellular network, a Wi-Fi network, or other wireless and wired networks.

In some implementations, the BS <NUM> may include a variety of components, including components such as one or more processors <NUM> and memory <NUM> and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with the modem <NUM> and the communication component <NUM> to enable one or more of the functions described herein related to communicating with the UE <NUM>. Further, the one or more processors <NUM>, modem <NUM>, memory <NUM>, transceiver <NUM>, RF front end <NUM> and one or more antennas <NUM>, may be configured to support voice and/or data calls (simultaneously or non-simultaneously) in one or more radio access technologies.

In an aspect, the one or more processors <NUM> may include the modem <NUM> that uses one or more modem processors. The various functions related to the communication component <NUM> may be included in the modem <NUM> and/or processors <NUM> and, in an aspect, may be executed by a single processor, while in other aspects, different ones of the functions may be executed by a combination of two or more different processors. For example, in an aspect, the one or more processors <NUM> may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiving device processor, or a transceiver processor associated with transceiver <NUM>. Additionally, the modem <NUM> may configure the BS <NUM> and processors <NUM>. In other aspects, some of the features of the one or more processors <NUM> and/or the modem <NUM> associated with the communication component <NUM> may be performed by transceiver <NUM>.

Also, memory <NUM> may be configured to store data used herein and/or local versions of applications <NUM> or the communication component <NUM>, the determination component, and/or one or more subcomponents of the communication component <NUM> or the determination component being executed by at least one processor <NUM>. Memory <NUM> may include any type of computer-readable medium usable by a computer or at least one processor <NUM>, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, non-volatile memory, and any combination thereof. In an aspect, for example, memory <NUM> may be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining the communication component <NUM>, the determination component, and/or one or more of its subcomponents, and/or data associated therewith, when the BS <NUM> is operating at least one processor <NUM> to execute the communication component <NUM>, the determination component, and/or one or more of the subcomponents.

The at least one receiver <NUM> may include hardware, firmware, and/or software code executable by a processor for receiving data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium). The receiver <NUM> may be, for example, a RF receiving device. In an aspect, receiver <NUM> may receive signals transmitted by the UE <NUM>. Transmitter <NUM> may include hardware, firmware, and/or software code executable by a processor for transmitting data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium).

Moreover, in an aspect, the BS <NUM> may include RF front end <NUM>, which may operate in communication with one or more antennas <NUM> and transceiver <NUM> for receiving and transmitting radio transmissions, for example, wireless communications transmitted by other BS <NUM> or wireless transmissions transmitted by UE <NUM>. RF front end <NUM> may be coupled with one or more antennas <NUM> and may include one or more low-noise amplifiers (LNAs) <NUM>, one or more switches <NUM>, one or more power amplifiers (PAs) <NUM>, and one or more filters <NUM> for transmitting and receiving RF signals.

In an aspect, transceiver may be tuned to operate at specified frequencies such that BS <NUM> may communicate with, for example, the UE <NUM> or one or more cells associated with one or more BS <NUM>. In an aspect, for example, the modem <NUM> may configure transceiver <NUM> to operate at a specified frequency and power level based on the base station configuration of the BS <NUM> and the communication protocol used by the modem <NUM>.

In an aspect, the modem <NUM> may be a multiband-multimode modem, which may process digital data and communicate with transceiver <NUM> such that the digital data is sent and received using transceiver <NUM>. In an aspect, the modem <NUM> may be multiband and be configured to support multiple frequency bands for a specific communications protocol. In an aspect, the modem <NUM> may be multimode and be configured to support multiple operating networks and communications protocols. In an aspect, the modem <NUM> may control one or more components of the BS <NUM> (e.g., RF front end <NUM>, transceiver <NUM>) to enable transmission and/or reception of signals from the network based on a specified modem configuration. In an aspect, the modem configuration may be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration may be based on base station configuration associated with the BS <NUM>.

Turning to <FIG>, in an implementation, a communication network <NUM> may be operating in a first mode, where the UE <NUM> may be configured with multiple TRPs (e.g., BSs, gNBs, eNBs, etc.). The multiple TRPs in the communication network <NUM> may be in the same serving cell, and/or in the same or different locations. The communication network <NUM> may include two or more BSs <NUM> with each having a coverage area <NUM>. For example, the communication network <NUM> may include a first BS 105a having a first coverage area 130a, a second BS 105b having a second coverage area 130b,a third BS 105c having a third coverage area 130c, and a fourth BS 105d having a fourth coverage area 130d. The communication network <NUM> may include the UE <NUM>. The first BS 105a, the second BS 105b, the third BS 105c, and the fourth BS 105d may be in a serving cell <NUM>. The first BS 105a, the second BS 105b, the third BS 105c, and the fourth BS 105d may be in different locations. The first BS 105a may communicate with the UE <NUM> via first wireless links 120a, the second BS 105b may communicate with the UE <NUM> via second wireless links 120b, and so forth and so on. The first BS 105a, the second BS 105b, the third BS 105c, and the fourth BS 105d may have the following PCIs, respectively: PCI-<NUM>, PCI-<NUM>, PCI-<NUM>, PCI-<NUM>. The BSs 105a-d may transmit the corresponding PCIs to the UE <NUM> via one or more synchronization signal blocks.

During operation, in an implementation, a subset (i.e., some or all) of the first BS 105a, the second BS 105b, the third BS 105c, and the fourth BS 105d may serve the UE <NUM>. The subset of TRPs may change rapidly. One or more TRPs (the first BS 105a, the second BS 105b, the third BS 105c, and/or the fourth BS 105d) may signal the UE <NUM> the subset of TRPs serving the UE <NUM> via a downlink control indicator (DCI) and/or a medium access control (MAC) control element (CE). In some examples, the second BS 105b, the third BS 105c, and the fourth BS 105d may be serving the UE <NUM>.

In a first aspect, the PCI of any TRP in the cell <NUM> may be selected for PHY processings. For example, one or more PCIs of the first BS 105a, the second BS 105b, the third BS 105c, and/or the fourth BS 105d may be used as the default input cell identification (ID) for PHY processings, such as PCI-<NUM>. In some examples, PCI-<NUM> may be used as the default input cell ID for bit scrambling, sequence determination, CCE-to-REG interleaving pattern determination, if no corresponding ID is configured. PCI-<NUM> may be associated with an entire cell group. PCI-<NUM> may or may not be a PCI for a particular cell in the cell group. PCI-<NUM> may be signaled to the UE <NUM> by one or more of the second BS 105b, the third BS 105c, and the fourth BS 105d (serving TRPs), or implicitly determined by one or more rules as described below.

In alternative aspects, the PCI selected for PHY processings may be associated with an anchor cell (e.g. the serving cell <NUM>) configured for broadcast, random access, receiving/analyzing measurement reports, or other control/management purposes.

In another aspect, the PCI selected for PHY processings may be the lowest one (e.g., PCI-<NUM>) or the highest one (e.g., PCI-<NUM>) in the group. Other rules may be used to determine the PCI for PHY processings.

In a second aspect, the PCI of any serving TRP in the cell <NUM> may be selected for PHY processings. For example, one or more PCIs of the second BS 105b, the third BS 105c, and/or the fourth BS 105d may be used as the default input cell identification (ID) for PHY processings, such as PCI-<NUM>. In some examples, PCI-<NUM> may be used as the default input cell ID for bit scrambling, sequence determination, CCE-to-REG interleaving pattern determination, if no corresponding ID is configured. PCI-<NUM> may be associated with an entire cell group. PCI-<NUM> may or may not be a PCI for a particular cell in the cell group. PCI-<NUM> may be signaled to the UE <NUM> by one or more of the second BS 105b, the third BS 105c, and the fourth BS 105d (serving TRPs), or implicitly determined by one or more rules.

In alternative aspects, the PCI selected for PHY processings may be the lowest one (e.g., PCI-<NUM>) or the highest one (e.g., PCI-<NUM>) in the group. Other rules may be used to determine the PCI for PHY processings.

In a third aspect, the PCI associated with the PHY processing may be used for the PHY processing. For example, if the third BS 105c transmits PDSCH information to the UE <NUM> or receives PUSCH information from the UE <NUM>, PCI-<NUM> may be used for the PHY processing (e.g., bit scrambling prior to modulation).

Examples of PHY processings may include the following. For PUSCH, PDSCH, PDCCH, and/or PUCCH format <NUM>, <NUM>, <NUM>, bits prior to modulation may be scrambled by the PCI if no scrambling ID is configured. Time/frequency hopping pattern of sequence properties for sequence carrying information/DMRS in PUCCH format <NUM>,<NUM>,<NUM>,<NUM> may be determined by PCI if no corresponding determination ID is configured. Sequence properties may include sequence group, sequence number, and cyclic shift. When transform precoding is disabled or enabled, DMRS sequence for PUSCH, PDSCH, and/or PDCCH may be determined based on the PCI if no corresponding determination ID is configured. For interleaved CCE-to-REG mapping for a CORESET, the interleaving pattern may be a function of a parameter n_shift, which may be the PCI if no radio resource control (RRC) configured n_shift is provided. In one example, for CORESET <NUM> configured by ControlResourceSetZero information element, n_shift may be equal to the PCI. For PBCH, bits prior to modulation may be scrambled by the PCI, and DMRS may be determined by the PCI.

Turning to <FIG>, in an implementation, a communication network <NUM> may be operating in a second mode, where the UE <NUM> may be configured with multiple serving cells with a single PCI per serving cell. The communication network <NUM> may include a fifth BS 105e having a fifth coverage area 130e, a sixth BS 105f having a sixth coverage area 130f, a seventh BS <NUM> having a seventh coverage area <NUM>, and an eighth BS <NUM> having an eighth coverage area <NUM>. The communication network <NUM> may include the UE <NUM>. The fifth BS 105e and the sixth BS 105f may be in a first cell <NUM>, the seventh BS <NUM> may be in a second cell <NUM>, and the eighth BS <NUM> may be in a third cell <NUM>. The fifth BS 105e, the sixth BS 105f, the seventh BS <NUM>, and the eighth BS <NUM> may be in different locations. The fifth BS 105e may communicate with the UE <NUM> via first wireless links 120e, the sixth BS 105f may communicate with the UE <NUM> via second wireless links 120f, and so forth and so on. The fifth BS 105e, the sixth BS 105f, the seventh BS <NUM>, and the eighth BS <NUM> may have the following PCIs, respectively: PCI-<NUM>, PCI-<NUM>, PCI-<NUM>, PCI-<NUM>. The BSs 105e-h may transmit the corresponding PCIs to the UE <NUM> via one or more synchronization signal blocks.

During operation, in an implementation, a subset (i.e., some or all) of the first cell <NUM>, the second cell <NUM>, and the third cell <NUM> may serve the UE <NUM>. The subset of serving cells may change rapidly. One or more serving cells of the first cell <NUM>, the second cell <NUM>, and the third cell <NUM> (e.g., TRPs within the serving cells) may signal the UE <NUM> the subset of serving cells serving the UE <NUM> via a downlink control indicator (DCI) and/or a medium access control (MAC) control element (CE). In some examples, first cell <NUM> and the third cell <NUM> may be serving the UE <NUM>.

In a first aspect, the PCI of any cell in the network <NUM> may be selected for PHY processings. For example, one or more PCIs of the first cell <NUM>, the second cell <NUM>, and/or the third cell <NUM> may be used as the default input cell identification (ID) for PHY processings, such as PCI-<NUM>. In some examples, PCI-<NUM> may be used as the default input cell ID for bit scrambling, sequence determination, CCE-to-REG interleaving pattern determination, if no corresponding ID is configured. PCI-<NUM> may be associated with an entire cell group. PCI-<NUM> may or may not be a PCI for a particular cell in the cell group. PCI-<NUM> may be signaled to the UE <NUM> by one or more of the first cell <NUM> and/or the third cell <NUM> (serving cells, or serving TRPs), or implicitly determined by one or more rules.

In alternative aspects, the PCI selected for PHY processings may be associated with an anchor cell (e.g. the first cell <NUM>) configured for broadcast, random access, receiving/analyzing measurement reports, or other control/management purposes.

In a second aspect, the PCI of any serving cell (e.g., the first cell <NUM> and/or the third cell <NUM>) may be selected for PHY processings. For example, one or more PCIs of the first cell <NUM> and the third cell <NUM> may be used as the default input cell identification (ID) for PHY processings, such as PCI-<NUM>. In some examples, PCI-<NUM> may be used as the default input cell ID for bit scrambling, sequence determination, CCE-to-REG interleaving pattern determination, if no corresponding ID is configured. PCI-<NUM> may be associated with an entire cell group. PCI-<NUM> may or may not be a PCI for a particular cell in the cell group. PCI-<NUM> may be signaled to the UE <NUM> by one or more of the first cell <NUM> and/or the third cell <NUM> (serving cells, or serving TRPs), or implicitly determined by one or more rules.

In a third aspect, the PCI associated with the PHY processing may be used for the PHY processing. For example, if the first cell <NUM> transmits PDSCH information to the UE <NUM> or receives PUSCH information from the UE <NUM>, PCI-<NUM> may be used for the PHY processing (e.g., bit scrambling prior to modulation).

Examples of PHY processings may include the following. For PUSCH, PDSCH, PDCCH, and/or PUCCH format <NUM>, <NUM>, <NUM>, bits prior to modulation may be scrambled by the PCI if no scrambling ID is configured. Time/frequency hopping pattern of sequence properties for sequence carrying information/DMRS in PUCCH format <NUM>,<NUM>,<NUM>,<NUM> may be determined by PCI if no corresponding determination ID is configured. Sequence properties may include sequence group, sequence number, and cyclic shift. When transform precoding is disabled or enabled, DMRS sequence for PUSCH, PDSCH, and/or PDCCH may be determined by PCI if no corresponding determination ID is configured. For interleaved control channel element (CCE) to resource element group (REG) mapping for a CORESET, the interleaving pattern may be a function of a parameter n_shift, which may be the PCI if no radio resource control (RRC) configured n_shift is provided. In one example, for CORESET <NUM> configured by ControlResourceSetZero information element, n_shift may be equal to the PCI. For PBCH, bits prior to modulation may be scrambled by the PCI, and DMRS may be determined by the PCI.

Referring to <FIG>, an example of a method <NUM> for determining the PCI for PHY processings may be performed by the one or more of the processor <NUM>, the memory <NUM>, the applications <NUM>, the modem <NUM>, the transceiver <NUM> and/or its subcomponents, the RF front end <NUM> and/or its subcomponents, the communication component <NUM>, and/or the determination component <NUM> of the UE <NUM> in the wireless communication network <NUM>.

At block <NUM>, the method <NUM> may receive a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network. For example, the communication component <NUM>, the modem <NUM>, and/or the processor <NUM> of the UE <NUM> may receive a layer <NUM> signaling or a layer <NUM> signaling, such as DCI and/or MAC-CE. The RF front end <NUM> may receive the electrical signals converted from electro-magnetic signals. The RF front end <NUM> may filter and/or amplify the electrical signals. The transceiver <NUM> or the receiver <NUM> may convert the electrical signals to the L1/L2 signaling, and send the L1/L2 signaling to the communication component <NUM>.

In certain implementations, the processor <NUM>, the modem <NUM>, the communication component <NUM>, the transceiver <NUM>, the receiver <NUM>, the transmitter <NUM>, the RF front end <NUM>, and/or the subcomponents of the RF front end <NUM> may be configured to and/or may define means for receiving a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network.

At block <NUM>, the method <NUM> may establish a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs. For example, the communication component <NUM>, the modem <NUM>, and/or the processor <NUM> of the UE <NUM> may establish a plurality of communication channels with one or more of transmission-reception points (TRPs) as described above with respect to <FIG> and <FIG>.

In certain implementations, the processor <NUM>, the modem <NUM>, the communication component <NUM>, the transceiver <NUM>, the receiver <NUM>, the transmitter <NUM>, the RF front end <NUM>, and/or the subcomponents of the RF front end <NUM> may be configured to and/or may define means for establishing a plurality of communication channels with the subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs.

At block <NUM>, the method <NUM> may determine one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings. For example, the determination component <NUM>, the modem <NUM>, and/or the processor <NUM> of the UE <NUM> may determine one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) as described above with respect to <FIG> and <FIG>.

In certain implementations, the processor <NUM>, the modem <NUM>, the determination component <NUM>, the transceiver <NUM>, the receiver <NUM>, the transmitter <NUM>, the RF front end <NUM>, and/or the subcomponents of the RF front end <NUM> may be configured to and/or may define means for determining one or more PCIs of the plurality of PCIs used as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein at least one of the layer <NUM> signaling or the layer <NUM> signaling comprises a downlink control information (DCI) signaling or a medium access control (MAC)-control element (CE) signaling.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising scrambling a plurality of bits associated with uplink information using the one or more PCIs if no scrambling ID is configured and transmitting the uplink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises at least one of physical uplink control channel (PUCCH) format <NUM>, PUCCH format <NUM>, PUCCH format <NUM>, or a physical uplink shared channel (PUSCH).

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein transmitting the uplink information further comprises transmitting the uplink information via at least a timing or a frequency hopping pattern of a sequence property based on the one or more PCIs in at least one of PUCCH format <NUM>, PUCCH format <NUM>, the PUCCH format <NUM>, or the PUCCH <NUM> if no determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the sequence property comprises at least one of a sequence group, a sequence number, or a cyclic shift.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving downlink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises a physical broadcast channel and descrambling a plurality of bits associated with the downlink information using the one or more PCIs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving downlink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises at least one of a physical downlink control channel or a physical downlink shared channel if no scrambling ID is configured and descrambling a plurality of bits associated with the downlink information using the one or more PCIs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein receiving the downlink information further comprises receiving the downlink information via resources indicated by a mapping in a control resource set (CORESET).

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the mapping is a control channel element to resource element group mapping associated with the CORESET, wherein the mapping comprises an interleaving pattern that is a function of a parameter, wherein the parameter is the one or more PCIs if no radio resource control (RRC) configured parameter is provided.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving one or more demodulation reference signals (DMRSs) for at least one of a physical downlink shared channel (PDSCH), a physical downlink control channel (PDDCH), or a physical broadcast channel (PBCH) from at least one of the plurality of TRPs, wherein the one or more DMRSs is generated based on the one or more PCIs if no corresponding determination ID is configured and demodulating the one or more DMRSs based on the one or more PCIs if no corresponding determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising modulating the one or more demodulation reference signals (DMRSs) based on the one or more PCIs if no corresponding determination ID is configured and transmitting one or more DMRSs for a physical uplink shared channel (PUSCH) to at least one of the plurality of TRPs, wherein the one or more DMRSs is generated based on the one or more PCIs if no corresponding determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the selected subset of the plurality of TRPs is associated with a serving cell and each TRP of the selected subset of the plurality of TRPs comprises a corresponding PCI.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving corresponding synchronization signal blocks from each TRP of the selected subset of the plurality of TRPs indicating the corresponding PCI.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving a downlink control information (DCI) signaling or a medium access control (MAC)-control element (CE) signaling indicating the selected subset of the plurality of TRPs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the selected subset of the plurality of TRPs is associated with a subset of a plurality of serving cells and the subset of the plurality of PCIs is each associated with the subset of the plurality of serving cells.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising measuring L1 metrics for each of the subset of the plurality of serving cells.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the L1 metrics comprises at least one of reference signal receiving power, a signal to interference-noise ratio, or reference signal receiving quality.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving a downlink control information (DCI) signaling or a medium access control (MAC)-control element (CE) signaling indicating the subset of the plurality of serving cells.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the one or more PCIs is associated with the selected subset of the plurality of TRPs of the network or a TRP different than the selected subset of the plurality of TRPs of the network.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein determining the one or more PCIs further comprises identifying the one or more PCIs received from the BS or identifying the one or more PCIs based on one or more rules.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the one or more PCIs is associated with an anchor cell, an anchor TRP of the selected subset of the plurality of TRPs of the network, a lowest PCI of the plurality of PCIs, or a highest PCI of the plurality of PCIs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the one or more PCIs is associated with the selected subset of the plurality of TRPs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the new PCI is associated with a lowest PCI of the plurality of PCIs or a highest PCI of the plurality of PCIs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein the one or more PCIs is a processing PCI associated with the plurality of physical processings of the one or more PCIs.

Referring to <FIG>, an example of a method <NUM> for transmitting L1/L2 signaling may be performed by the one or more of the processor <NUM>, the memory <NUM>, the applications <NUM>, the modem <NUM>, the transceiver <NUM> and/or its subcomponents, the RF front end <NUM> and/or its subcomponents, and/or the communication component <NUM> of the BS <NUM> in the wireless communication network <NUM>.

At block <NUM>, the method <NUM> may transmit a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings. For example, the communication component <NUM>, the modem <NUM>, and/or the processor <NUM> of the BS <NUM> may transmit L1/L2 signaling, such as DCI and/or MAC-CE as described above with respect to <FIG> and <FIG>. The communication component <NUM> may send the L1/L2 signaling to the transceiver <NUM> or the transmitter <NUM>. The transceiver <NUM> or the transmitter <NUM> may convert the L1/L2 signaling to electrical signals and send to the RF front end <NUM>. The RF front end <NUM> may filter and/or amplify the electrical signals. The RF front end <NUM> may send the electrical signals as electro-magnetic signals via the one or more antennas <NUM>.

In certain implementations, the processor <NUM>, the modem <NUM>, the communication component <NUM>, the transceiver <NUM>, the receiver <NUM>, the transmitter <NUM>, the RF front end <NUM>, and/or the subcomponents of the RF front end <NUM> may be configured to and/or may define means for transmitting a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications (PCIs) associated with a selected subset of a plurality of transmission-reception points (TRPs) in the network, wherein one or more PCIs of the plurality of PCIs is configured for use by a user equipment (UE) as one or more default input cell identifications (IDs) associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.

At block <NUM>, the method <NUM> may establish a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs. For example, the communication component <NUM>, the modem <NUM>, and/or the processor <NUM> of the BS <NUM> may establish a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and one or more transmission-reception points (TRPs), each TRP corresponding to a PCI of the plurality of PCIs.

In certain implementations, the processor <NUM>, the modem <NUM>, the communication component <NUM>, the transceiver <NUM>, the receiver <NUM>, the transmitter <NUM>, the RF front end <NUM>, and/or the subcomponents of the RF front end <NUM> may be configured to and/or may define means for establishing a communication channel with the UE, wherein the communication channel is one of the plurality of communication channels between the UE and the selected subset of the plurality of TRPs, each TRP corresponding to a PCI of the plurality of PCIs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving the uplink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises at least one of physical uplink control channel (PUCCH) format <NUM>, PUCCH format <NUM>, PUCCH format <NUM>, or a physical uplink shared channel (PUSCH) and descrambling a plurality of bits associated with uplink information using the one or more PCIs if no scrambling ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, wherein receiving the uplink information further comprises receiving the uplink information transmitted via at least a timing or a frequency hopping pattern of a sequence property based on the one or more PCIs in at least one of PUCCH format <NUM>, PUCCH format <NUM>, the PUCCH format <NUM>, or the PUCCH <NUM> if no determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising descrambling a plurality of bits associated with downlink information using the one or more PCIs and transmitting the downlink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises a physical broadcast channel.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising descrambling a plurality of bits associated with downlink information using the one or more PCIs and transmitting the downlink information via at least one of the plurality of communication channels, wherein the plurality of communication channels comprises at least one of a physical downlink control channel or a physical downlink shared channel if no scrambling ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting a mapping in a control resource set (CORESET).

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising modulating the one or more demodulation reference signals (DMRSs) based on the one or more PCIs if no corresponding determination ID is configured and transmitting one or more DMRSs for at least one of a physical downlink shared channel (PDSCH), a physical downlink control channel (PDDCH), or a physical broadcast channel (PBCH) from at least one of the plurality of TRPs, wherein the one or more DMRSs is generated based on the one or more PCIs if no corresponding determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving one or more demodulation reference signals (DMRSs) for a physical uplink shared channel (PUSCH) to at least one of the plurality of TRPs, wherein the one or more DMRSs is generated based on the one or more PCIs if no corresponding determination ID is configured and demodulating the one or more DMRSs based on the one or more PCIs if no corresponding determination ID is configured.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting at least one of corresponding synchronization signal blocks from each TRP of the selected subset of the plurality of TRPs indicating the corresponding PCI.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting a downlink control information (DCI) signaling or a medium access control (MAC)-control element (CE) signaling indicating the selected subset of the plurality of TRPs.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising receiving measured L1 metrics from the UE for a serving cell of the plurality of the serving cells or each of the subset of the plurality of serving cells.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting a downlink control information (DCI) signaling or a medium access control (MAC)-control element (CE) signaling indicating the subset of the plurality of serving cells.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising determining the subset of the plurality of serving cells based on the received measured L1 metrics.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting the one or more PCIs to the UE.

Alternatively or additionally, the method <NUM> may further include any of the methods above, further comprising transmitting one or more PCIs to the UE.

For example, changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Also, various examples may omit, substitute, or add various procedures or components as appropriate.

It should be noted that the techniques described herein may be used for various wireless communication networks such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other systems. The terms "system" and "network" are often used interchangeably. IS-<NUM> Releases <NUM> and A are commonly referred to as CDMA2000 1X, 1X, etc. IS-<NUM> (TIA-<NUM>) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE <NUM> (Wi-Fi), IEEE <NUM> (WiMAX), IEEE <NUM>, Flash-OFDM™, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS). 3GPP LTE and LTE-Advanced (LTE-A) are new releases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). The techniques described herein may be used for the systems and radio technologies mentioned above as well as other systems and radio technologies, including cellular (e.g., LTE) communications over a shared radio frequency spectrum band. The description herein, however, describes an LTE/LTE-A system or <NUM> system for purposes of example, and LTE terminology is used in much of the description below, although the techniques may be applicable other next generation communication systems.

For example, due to the nature of software, functions described above may be implemented using software executed by a specially programmed processor, hardware, firmware, hardwiring, or combinations of any of these.

A storage medium may be any available medium that may be accessed by a general purpose or special purpose computer. By way of example, and not limitation, computer-readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.

Claim 1:
A method (<NUM>) of wireless communication by a user equipment, UE, in a network, comprising:
receiving (<NUM>) a layer <NUM> signaling or a layer <NUM> signaling indicating a selected subset of a plurality of physical cell identifications, PCIs, associated with a selected subset of a plurality of transmission-reception points, TRPs, in the network;
establishing (<NUM>) a plurality of communication channels with the selected subset of the plurality of TRPs, wherein each TRP comprises a corresponding PCI of the plurality of PCIs; and
determining (<NUM>) one or more PCIs of the plurality of PCIs used as one or more default input cell identifications, IDs, associated with a plurality of physical processings, when no explicit configured input ID is signaled to the UE associated with the plurality of physical processings.