Method and apparatus for handling power headroom report

Abstract

A method performed by a User Equipment (UE) for transmitting a Power Headroom Report (PHR) is provided. The method receives, from a Base Station (BS), first and second Transmission Configuration Indication (TCI) states, first and second Sounding Reference Signal (SRS) resource sets, Radio Resource Control (RRC) parameters indicating a prohibit timer, a power change threshold, and a pathloss (PL) offset associated with the second TCI state. The method performs first and second uplink transmissions associated with the first and second SRS resource sets, respectively. The method receives a PL reference signal (RS) associated with the first TCI state. The method calculates an estimated PL value associated with the second SRS resource set based on the PL RS and the PL offset. If the estimated PL value has changed more than the power change threshold and the prohibit timer has expired, the method transmits a PHR to the BS.

Description

METHOD AND APPARATUS FOR HANDLING POWER HEADROOM REPORT

[0001] The present disclosure is related to wireless communication and, more specifically, to a User Equipment (UE), Base Station (BS), and method for handling a power headroom report (PHR) in the wireless communication networks.

[0002] Various efforts have been made to improve different aspects of wireless communication for the cellular wireless communication systems, such as the 5thGeneration (5G) New Radio (NR), by improving data rate, latency, reliability, and mobility. The 5G NR system is designed to provide flexibility and configurability to optimize network services and types, accommodating various use cases, such as enhanced Mobile Broadband (eMBB), massive Machine-Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC). As the demand for radio access continues to grow, however, there exists a need for further improvements in the next-generation wireless communication systems, such as improvements in handling PHRs.

[0003] The present disclosure is related to a UE, a BS, and a method for transmitting a PHR in the wireless communication networks.

[0004] In a first aspect of the present disclosure, a UE for transmitting a PHR is provided. The UE includes at least one processor and at least one non-transitory computer-readable medium that is coupled to the at least one processor and that stores one or more computer-executable instructions. The computer-executable instructions, when executed by the at least one processor, cause the UE to: receive, from a BS, a first Radio Resource Control (RRC) parameter indicating a prohibit timer; receive, from the BS, a second RRC parameter indicating a power change threshold; receive, from the BS, a first indicated Transmission Configuration Indication (TCI) state, a second indicated TCI state, a first Sounding Reference Signal (SRS) resource set, and a second SRS resource set; receive, from the BS, a third RRC parameter indicating a configured pathloss (PL) offset associated with the second indicated TCI state; receive, from the BS, a PL reference signal (RS) associated with the first indicated TCI state; perform a first physical uplink shared channel (PUSCH) transmission associated with the first SRS resource set by applying the first indicated TCI state; perform a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state; calculate an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset; and in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired, transmit, to the BS, a first PHR including a power headroom (PH) associated with the estimated PL value.

[0005] In some implementations of the first aspect, the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to: receive, from the BS, an update indication to update a value of the configured PL offset.

[0006] In some implementations of the first aspect, the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to: receive, from the BS, a fourth RRC parameter indicating a change threshold for the configured PL offset; and in response to determining that the configured PL offset has changed more than the change threshold indicated in the fourth RRC parameter and that the prohibit timer has expired, transmit a second PHR to the BS.

[0007] In some implementations of the first aspect, receiving the update indication includes receiving the update indication in a Medium Access Control (MAC) Control Element (CE).

[0008] In some implementations of the first aspect, receiving the update indication includes receiving the update indication in a fourth RRC parameter.

[0009] In a second aspect of the present application, a BS for receiving a PHR is provided. The BS includes at least one processor and at least one non-transitory computer-readable medium that is coupled to the at least one processor and that stores one or more computer-executable instructions. The computer-executable instructions, when executed by the at least one processor, cause the BS to: transmit, to a UE, a first RRC parameter indicating a prohibit timer; transmit, to the UE, a second RRC parameter indicating a power change threshold; transmit, to the UE, a first indicated TCI state, a second indicated TCI state, a first SRS resource set, and a second SRS resource set; transmit, to the UE, a third RRC parameter indicating a configured PL offset associated with the second indicated TCI state; and transmit, to the UE, a PL RS associated with the first indicated TCI state. The UE performs a first PUSCH transmission associated with the first SRS resource set by applying the first indicated TCI state. The UE performs a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state. The UE calculates an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset. The UE transmits, to the BS, a first PHR including a PH associated with the estimated PL value, in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired.

[0010] In some implementations of the second aspect, the one or more computer-executable instructions, when executed by the at least one processor, further cause the BS to: transmit, to the UE, an update indication to update a value of the configured PL offset.

[0011] In some implementations of the second aspect, the one or more computer-executable instructions, when executed by the at least one processor, further cause the BS to: transmit, to the UE, a fourth RRC parameter indicating a change threshold for the configured PL offset; and receive, from the UE, a second PHR in response to the UE determining that the configured PL offset has changed more than the change threshold indicated in the fourth RRC parameter and that the prohibit timer has expired.

[0012] In some implementations of the second aspect, transmitting the update indication includes transmitting the update indication in a MAC CE.

[0013] In some implementations of the second aspect, transmitting the update indication includes transmitting the update indication in a fourth RRC parameter.

[0014] In a third aspect of the present application, a method performed by a UE for transmitting a PHR is provided. The method includes receiving, from a BS, a first RRC parameter indicating a prohibit timer; receiving, from the BS, a second RRC parameter indicating a power change threshold; receiving, from the BS, a first indicated TCI state, a second indicated TCI state, a first SRS resource set, and a second SRS resource set; receiving, from the BS, a third RRC parameter indicating a configured PL offset associated with the second indicated TCI state; receiving, from the BS, a PL RS associated with the first indicated TCI state; performing a first PUSCH transmission associated with the first SRS resource set by applying the first indicated TCI state; performing a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state; calculating an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset; and in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired, transmitting, to the BS, a first PHR including a PH associated with the estimated PL value.

[0015] Aspects of the present disclosure are best understood from the following detailed disclosure when read with the accompanying drawings. Various features are not drawn to scale. Dimensions of various features may be arbitrarily increased or reduced for clarity of discussion.

[0016] FIG. 1 is a diagram illustrating a heterogenous network according to an example implementation of the present disclosure.

[0017] FIG. 2A is a diagram illustrating DL transmission in a first asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure.

[0018] FIG. 2B is a diagram illustrating UL transmission in the first asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure

[0019] FIG. 3A is a diagram illustrating DL transmission in a second asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure.

[0020] FIG. 3B is a diagram illustrating UL transmission in the second asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure.

[0021] FIG. 4 is a flowchart illustrating a method / process performed by a UE for transmitting a PHR, according to an example implementation of the present disclosure.

[0022] FIG. 5 is a flowchart illustrating a method / process performed by a BS for receiving a PHR, according to an example implementation of the present disclosure

[0023] FIG. 6 is a block diagram illustrating a node for wireless communication, according to an example implementation of the present disclosure.

[0024] Some of the abbreviations used in the present disclosure include: Abbreviations　　　　　　　　Full name 3GPP　　　　　　　　　　　　3rdGeneration Partnership Project 5G　　　　　　　　　　　　5thgeneration ACK　　　　　　　　　　　　Acknowledgment AP　　　　　　　　　　　　Aperiodic BWP　　　　　　　　　　　　Band Width Part BS　　　　　　　　　　　　Base Station CA　　　　　　　　　　　　Carrier Aggregation CB　　　　　　　　　　　　CodeBook CORESET　　　　　　　　　　　　Control resource set CC　　　　　　　　　　　　Component Carrier CCE　　　　　　　　　　　　Control Chanel Element CE　　　　　　　　　　　　Control Element CPE　　　　　　　　　　　　Customer Premises Equipment CRC　　　　　　　　　　　　Cyclic Redundancy Check C-RNTI　　　　　　　　　　　　Cell Radio Network Temporary Identifier CSI　　　　　　　　　　　　Channel State Information DC　　　　　　　　　　　　Dual Connectivity DCI　　　　　　　　　　　　Downlink Control Information DL　　　　　　　　　　　　Downlink DMRS　　　　　　　　　　　　Demodulation Reference Signal EN-DC　　　　　　　　　　　　E-UTRA-NR Dual Connectivity E-UTRA　　　　　　　　　　　　Evolved Universal Terrestrial Radio Access FR　　　　　　　　　　　　Frequency Range FWA　　　　　　　　　　　　Fixed Wireless Access HARQ　　　　　　　　　　　　Hybrid Automatic Repeat Request IE　　　　　　　　　　　　Information Element IIoT　　　　　　　　　　　　Industrial Internet of Things LSB　　　　　　　　　　　　Least Significant Bit LTE　　　　　　　　　　　　Long Term Evolution L1 / L2 / L3　　　　　　　　　　　　Layer 1 / Layer 2 / Layer 3 MAC　　　　　　　　　　　　Medium Access Control MCG　　　　　　　　　　　　Master Cell Group MIB　　　　　　　　　　　　Master Information Block MIMO　　　　　　　　　　　　Multi-input Multi-output MPE　　　　　　　　　　　　Maximum Power Extrapolation MSB　　　　　　　　　　　　Most Significant Bit mTRP / multi-TRP　　　　multiple TRP NACK　　　　　　　　　　　　Negative Acknowledgment NDI　　　　　　　　　　　　New Data Indicator NE-DC　　　　　　　　　　　　NR-E-UTRA Dual Connectivity NG-RAN　　　　　　　　　　　　Next Generation Radio Access Network NGEN-DC　　　　　　　　　　　　NG-RAN E-UTRA-NR Dual Connectivity non-CB　　　　　　　　　　　　non-CodeBook NR　　　　　　　　　　　　New RAT / Radio NW　　　　　　　　　　　　Network PC　　　　　　　　　　　　Power Control PCell　　　　　　　　　　　　Primary Cell PSCell　　　　　　　　　　　　Primary Secondary Cell PBCH　　　　　　　　　　　　Physical Broadcast Channel PDCCH　　　　　　　　　　　　Physical Downlink Control Channel PDSCH　　　　　　　　　　　　Physical Downlink Shared Channel PDU　　　　　　　　　　　　Protocol Data Unit P-MPR　　　　　　　　　　　　Power management Maximum Power Reduction PH　　　　　　　　　　　　Power Headroom PHR　　　　　　　　　　　　Power Headroom Report PHY　　　　　　　　　　　　Physical PRACH　　　　　　　　　　　　Physical Random Access Channel PTAG　　　　　　　　　　　　Primary Timing Advance Group PUCCH　　　　　　　　　　　　Physical Uplink Control Channel PUSCH　　　　　　　　　　　　Physical Uplink Shared Channel RA　　　　　　　　　　　　Random Access RAN　　　　　　　　　　　　Radio Access Network RAT　　　　　　　　　　　　Radio Access Technology Rel　　　　　　　　　　　　Release RNTI　　　　　　　　　　　　Radio Network Temporary Identifier RRC　　　　　　　　　　　　Radio Resource Control RS　　　　　　　　　　　　Reference Signal RV　　　　　　　　　　　　Redundancy Version SCell　　　　　　　　　　　　Secondary Cell SCG　　　　　　　　　　　　Secondary Cell Group SCS　　　　　　　　　　　　Subcarrier Spacing SP　　　　　　　　　　　　Semi-Persistent SpCell　　　　　　　　　　　　Special Cell SR　　　　　　　　　　　　Scheduling Request SRI　　　　　　　　　　　　SRS Resource Indicator SRS　　　　　　　　　　　　Sounding Reference Signal SSB　　　　　　　　　　　　Synchronization Signal Block STAG　　　　　　　　　　　　Secondary Timing Advance Group sTRP　　　　　　　　　　　　Single TRP TA　　　　　　　　　　　　Timing Advance TAG　　　　　　　　　　　　Timing Advance Group TB　　　　　　　　　　　　Transport Block TCI　　　　　　　　　　　　Transmission Configuration Indication TPC　　　　　　　　　　　　Transmission Power Control TR　　　　　　　　　　　　Technical Report TRI　　　　　　　　　　　　Transmit Rank Indication TRP 　　　　　　　　　　　　Transmission Reception Point TS　　　　　　　　　　　　Technical Specification TX　　　　　　　　　　　　Transmission QCL　　　　　　　　　　　　Quasi Co-Location UE　　　　　　　　　　　　User Equipment UL　　　　　　　　　　　　Uplink UL-SCH　　　　　　　　　　　　Uplink Shared Channel URLLC　　　　　　　　　　　　Ultra Reliable Low Latency Communication

[0025] The following contains specific information related to implementations of the present disclosure. The drawings and their accompanying detailed disclosure are merely directed to implementations. However, the present disclosure is not limited to these implementations. Other variations and implementations of the present disclosure will be obvious to those skilled in the art.

[0026] Unless noted otherwise, like or corresponding elements among the drawings may be indicated by like or corresponding reference numerals. Moreover, the drawings and illustrations in the present disclosure are generally not to scale and are not intended to correspond to actual relative dimensions.

[0027] For the purposes of consistency and ease of understanding, like features may be identified (although, in some examples, not illustrated) by the same numerals in the drawings. However, the features in different implementations may be different in other respects and may not be narrowly confined to what is illustrated in the drawings.

[0028] References to “one implementation,” “an implementation,” “example implementation,” “various implementations,” “some implementations,” “implementations of the present application,” etc., may indicate that the implementation(s) of the present application so described may include a particular feature, structure, or characteristic, but not every possible implementation of the present application necessarily includes the particular feature, structure, or characteristic. Further, repeated use of the phrase “In some implementations,” or “in an example implementation,” “an implementation,” do not necessarily refer to the same implementation, although they may. Moreover, any use of phrases like “implementations” in connection with “the present application” are never meant to characterize that all implementations of the present application must include the particular feature, structure, or characteristic, and should instead be understood to mean “at least some implementations of the present application” includes the stated particular feature, structure, or characteristic. The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the equivalent.

[0029] The expression “at least one of A, B and C” or “at least one of the following: A, B and C” means “only A, or only B, or only C, or any combination of A, B and C.” The terms “system” and “network” may be used interchangeably. The term “and / or” is only an association relationship for describing associated objects and represents that three relationships may exist such that A and / or B may indicate that A exists alone, A and B exist at the same time, or B exists alone. The character “ / ” generally represents that the associated objects are in an “or” relationship.

[0030] For the purposes of explanation and non-limitation, specific details, such as functional entities, techniques, protocols, and standards, are set forth for providing an understanding of the disclosed technology. In other examples, detailed disclosure of well-known methods, technologies, systems, and architectures are omitted so as not to obscure the present disclosure with unnecessary details.

[0031] Persons skilled in the art will immediately recognize that any network function(s) or algorithm(s) disclosed may be implemented by hardware, software, or a combination of software and hardware. Disclosed functions may correspond to modules which may be software, hardware, firmware, or any combination thereof.

[0032] A software implementation may include computer executable instructions stored on a computer-readable medium, such as memory or other type of storage devices. One or more microprocessors or general-purpose computers with communication processing capability may be programmed with corresponding executable instructions and perform the disclosed network function(s) or algorithm(s).

[0033] The microprocessors or general-purpose computers may include Application-Specific Integrated Circuits (ASICs), programmable logic arrays, and / or one or more Digital Signal Processor (DSPs). Although some of the disclosed implementations are oriented to software installed and executing on computer hardware, alternative implementations implemented as firmware, as hardware, or as a combination of hardware and software are well within the scope of the present disclosure. The computer-readable medium includes but is not limited to Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory, Compact Disc Read-Only Memory (CD-ROM), magnetic cassettes, magnetic tape, magnetic disk storage, or any other equivalent medium capable of storing computer-readable instructions.

[0034] A radio communication network architecture such as a Long-Term Evolution (LTE) system, an LTE-Advanced (LTE-A) system, an LTE-Advanced Pro system, or a 5G NR Radio Access Network (RAN) typically includes at least one base station (BS), at least one UE, and one or more optional network elements that provide connection within a network. The UE communicates with the network such as a Core Network (CN), an Evolved Packet Core (EPC) network, an Evolved Universal Terrestrial RAN (E-UTRAN), a 5G Core (5GC), or an internet via a RAN established by one or more BSs.

[0035] A UE may include, but is not limited to, a mobile station, a mobile terminal or device, or a user communication radio terminal. The UE may be a portable radio equipment that includes, but is not limited to, a mobile phone, a tablet, a wearable device, a sensor, a vehicle, or a Personal Digital Assistant (PDA) with wireless communication capability. The UE is configured to receive and transmit signals over an air interface to one or more cells in a RAN.

[0036] The BS may be configured to provide communication services according to at least a Radio Access Technology (RAT) such as Worldwide Interoperability for Microwave Access (WiMAX), Global System for Mobile communications (GSM) that is often referred to as 2G, GSM Enhanced Data rates for GSM Evolution (EDGE) RAN (GERAN), General Packet Radio Service (GPRS), Universal Mobile Telecommunication System (UMTS) that is often referred to as 3G based on basic wideband-code division multiple access (W-CDMA), high-speed packet access (HSPA), LTE, LTE-A, evolved LTE (eLTE) that is LTE connected to 5GC, NR (often referred to as 5G), and / or LTE-A Pro. However, the scope of the present disclosure is not limited to these protocols.

[0037] The BS may include, but is not limited to, a node B (NB) in the UMTS, an evolved node B (eNB) in LTE or LTE-A, a radio network controller (RNC) in UMTS, a BS controller (BSC) in the GSM / GERAN, an ng-eNB in an Evolved Universal Terrestrial Radio Access (E-UTRA) BS in connection with 5GC, a next generation Node B (gNB) in the 5G-RAN, or any other apparatus capable of controlling radio communication and managing radio resources within a cell. The BS may serve one or more UEs via a radio interface. Although the gNB is used as an example in some implementations within the present disclosure, it should be noted that the disclosed implementations may also be applied to other types of base stations.

[0038] The BS may be operable to provide radio coverage to a specific geographical area using multiple cells forming the RAN. The BS may support the operations of the cells. Each cell may be operable to provide services to at least one UE within its radio coverage.

[0039] Each cell (may often referred to as a serving cell) may provide services to one or more UEs within the cell’s radio coverage, such that each cell schedules the DL (and optionally UL resources) to at least one UE within its radio coverage for DL (and optionally UL packet transmissions from the UE). The BS may communicate with one or more UEs in the radio communication system via the cells.

[0040] A cell may allocate sidelink (SL) resources for supporting the Proximity Services (ProSe) or Vehicle to Everything (V2X) services. Each cell may have overlapped coverage areas with other cells.

[0041] In Multi-RAT Dual Connectivity (MR-DC) cases, the primary cell of a Master Cell Group (MCG) or a Secondary Cell Group (SCG) may be referred to as a Special Cell (SpCell). A Primary Cell (PCell) may include the SpCell of an MCG. A Primary SCG Cell (PSCell) may include the SpCell of an SCG. MCG may include a group of serving cells associated with the Master Node (MN), including the SpCell and optionally one or more Secondary Cells (SCells). An SCG may include a group of serving cells associated with the Secondary Node (SN), including the SpCell and optionally one or more SCells.

[0042] As discussed above, the frame structure for NR may support flexible configurations for accommodating various next generation (e.g., 5G) communication requirements, such as Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC), while fulfilling high reliability, high data rate, and low latency requirements. The Orthogonal Frequency-Division Multiplexing (OFDM) technology in the 3GPP may serve as a baseline for an NR waveform. The scalable OFDM numerology, such as adaptive sub-carrier spacing, channel bandwidth, and Cyclic Prefix (CP), may also be used.

[0043] Two coding schemes may be considered for NR, specifically, Low-Density Parity-Check (LDPC) code and Polar Code. The coding scheme adaption may be configured based on channel conditions and / or service applications.

[0044] At least the DL transmission data, a guard period, and UL transmission data should be included in a transmission time interval (TTI) of a single NR frame. The respective portions of the DL transmission data, the guard period, and the UL transmission data should also be configurable based on, for example, the network dynamics of NR. SL resources may also be provided in an NR frame to support ProSe services or V2X services.

[0045] Any two or more than two of the following paragraphs, (sub)-bullets, points, actions, behaviors, terms, or claims described in the present disclosure may be combined logically, reasonably, and properly to form a specific method.

[0046] Any sentence, paragraph, (sub)-bullet, point, action, behaviors, terms, or claims described in the present disclosure may be implemented independently and separately to form a specific method.

[0047] Dependency, e.g., “based on”, “more specifically”, “preferably”, “in one embodiment”, “in some implementations”, etc., in the present disclosure is just one possible example which would not restrict the specific method.

[0048] In some implementations, all the designs / embodiment / implementations introduced within this disclosure are not limited to be applied for dealing with the problems discussed within this disclosure. For example, the described embodiments may be applied to solve other problems that exist in the RAN of wireless communication systems. In some implementations, all of the numbers listed within the designs / embodiment / implementations introduced within this disclosure are just examples and for illustration, for example, of how the described methods are executed.

[0049] Examples of some selected terms in the present disclosure are provided as follows.

[0050] Antenna Panel: a conceptual term for a UE antenna implementation. It may be assumed that a panel is an operational unit for controlling a transmitting spatial filter (beam). A panel may typically include multiple antenna elements. In some implementations, a beam may be formed by a panel, and in order to form two beams simultaneously, two panels may be needed. Such simultaneous beamforming from multiple panels may be subject to UE capability. A similar definition for “panel” may be applicable by applying spatial receiving filtering characteristics.

[0051] Beam: the term “beam” here may be replaced by spatial filter. For example, when a UE reports a preferred gNB TX beam, the UE is essentially selecting a spatial filter used by the gNB. The term “beam information” is used to provide information about which beam / spatial filter is being used / selected. In some implementations, the individual beams (e.g., spatial filters) may be used to transmit individual reference signals. Consequently, a beam or beam information may be represented by one or more reference signal resource indices.

[0052] DCI: DCI may include downlink control information, and there may be various DCI formats used in a PDCCH. The DCI format may be a predefined format in which the downlink control information may be packed / formed and transmitted in a PDCCH.

[0053] TCI state: A TCI state may include parameters for configuring a QCL relationship between one or more DL reference signals and a target reference signal set. For example, a target reference signal set may include the DMRS ports of a PDSCH, a PDCCH, a PUCCH, or a PUSCH.

[0054] HARQ: A functionality that ensures the delivery between peer entities at Layer 1 (e.g., Physical Layer). A single HARQ process supports one Transport Block (TB) when the physical layer is not configured for the downlink / uplink spatial multiplexing, and when the physical layer is configured for downlink / uplink spatial multiplexing, a single HARQ process may support one or more TBs. There is one HARQ entity per serving cell. Each HARQ entity may support a parallel (number of) DL and UL HARQ process.

[0055] The present disclosure includes implementations related to asymmetric DL sTRP / UL mTRP deployment scenarios.

[0056] In some implementations, for a PHR procedure, a UE may receive, from the BS, a first RRC parameter, a second RRC parameter, and a third RRC parameter. The first RRC parameter may indicate a pathloss offset, the second RRC parameter may indicate a threshold value, and the third RRC parameter may indicate a value of a timer. The UE may determine whether to transmit a PHR based on the first RRC parameter, the second RRC parameter, and the third RRC parameter. If the timer expires and the change of a path loss offset is more than the threshold value, the PHR procedure may be triggered by the UE.

[0057] In some implementations, the UE may receive a fourth RRC parameter, a first SRS resource set configuration, and a second SRS resource set configuration. The fourth RRC parameter may indicate whether the UE is enabled to report two PHRs being associated with the first SRS resource set and the second SRS resource set in a PHR report corresponding to a serving cell. The UE may transmit a first UL transmission associated with the first SRS resource set and transmit a second UL transmission associated with the second SRS resource set. In a case that a first PL RS, used to determine a first pathloss for calculating the transmission power of the first UL transmission, is absent, the UE may determine the first pathloss based on the first RRC parameter and a second PL PS, used to determine a second pathloss for calculating the transmission power of the second UL transmission.

[0058] In some implementations, the UE may receive a fourth RRC parameter, a first TCI state, and a second TCI state. The fourth RRC parameter may indicate whether the UE is enabled to report two PHRs being associated with the first TCI state and the second TCI state in a PHR report corresponding to a serving cell. The UE may transmit a first UL transmission according to the first TCI state and transmit a second UL transmission according to the second TCI state. In a case that a first PL RS, used to determine a first pathloss for calculating the transmission power of the first UL transmission, is absent, the UE may determine the first pathloss based on the first RRC parameter and a second PL PS, used to determine a second pathloss for calculating the transmission power of the second UL transmission. The first PL RS may be configured in the configuration of the first TCI state. The second PL RS may be configured in the configuration of the second TCI state.

[0059] In some implementations, for a PHR procedure, a UE may receive, from the BS, a first RRC parameter, a second RRC parameter, a third RRC parameter, a first TCI state, and a second TCI state. The first RRC parameter may indicate a pathloss offset, the second RRC parameter may indicate a threshold value, and the third RRC parameter may indicate a value of a timer. The UE may determine whether to transmit a PHR based on the first RRC parameter, the second RRC parameter, and the third RRC parameter. If the timer expires and the change of a first pathloss and / or a second pathloss is more than the threshold value, the PHR procedure corresponding to a first UL transmission transmitted by the first TCI state and / or a second UL transmission transmitted by the second TCI state may be triggered by the UE.

[0060] In some implementations, in a case that a first PL RS, used to determine a first pathloss for calculating the transmission power of the first UL transmission, is absent, the UE may determine the first pathloss based on the first RRC parameter and a second PL PS, used to determine a second pathloss for calculating the transmission power of the second UL transmission.

[0061] In some implementations, the UE may receive a fourth RRC parameter, where the fourth RRC parameter may indicate whether the UE is enabled to report two PHRs being associated with the first UL transmission transmitted by the first TCI state and the second UL transmission transmitted by the second TCI state in a PHR report corresponding to a serving cell.

[0062] In some implementations, if the UE is configured with the fourth RRC parameter to enable reporting two PHRs in a PHR report, the UE may transmit a PHR report including a first PHR and a second PHR to the BS, where the first PHR and the second PHR may be associated with the serving cell.

[0063] In some implementations, the first PHR may include first information and second information, and the second PHR may include third information and fourth information. The first information may be the maximum transmission power (e.g., a transmit power level in dBm) that may be used to transmit the first UL transmission by the UE. The second information may be computed / calculated based on at least one of the first information, the first RRC parameter, and a second pathloss corresponding to a second UL transmission (or a second SRS resource set and / or the second TCI state). The third information may be the maximum transmission power (e.g., a transmit power level in dBm) that may be used to transmit the second UL transmission by the UE. The fourth information may be computed / calculated based on at least one of the third information and the second pathloss corresponding to a second UL transmission (or a second SRS resource set and / or the second TCI state).

[0064] In some implementations, the first PHR may (only) include first information, and the second PHR may include third information and fourth information. The first information may be the maximum transmission power (e.g., a transmit power level in dBm) that may be used to transmit the first UL transmission by the UE. The third information may be the maximum transmission power (e.g., a transmit power level in dBm) that may be used to transmit the second UL transmission by the UE. The fourth information may be computed / calculated based on at least one of the third information and the second pathloss corresponding to a second UL transmission (or a second SRS resource set and / or the second TCI state).

[0065] In some implementations, the UE may receive a first SRS resource set configuration and a second SRS resource set configuration. The UE may transmit the first UL transmission associated with the first SRS resource set by the first TCI state and transmit the second UL transmission associated with the second SRS resource set by the second TCI state. In a case that a first PL RS, used to determine a first pathloss for calculating the transmission power of the first UL transmission, is absent, the UE may determine the first pathloss based on the first RRC parameter and a second PL PS, used to determine a second pathloss for calculating the transmission power of the second UL transmission.

[0066] In some implementations, the UE may receive a fourth RRC parameter, a first TCI state, and a second TCI state. The fourth RRC parameter may indicate whether the UE is enabled to report two PHRs associated with the first TCI state and the second TCI state in a PHR report corresponding to a serving cell. The UE may transmit a first UL transmission according to the first TCI state and transmit a second UL transmission according to the second TCI state. In a case that a first PL RS, used to determine a first pathloss for calculating the transmission power of the first UL transmission, is absent, the UE may determine the first pathloss based on the first RRC parameter and a second PL PS, used to determine a second pathloss for calculating the transmission power of the second UL transmission. The first PL RS may be configured in the configuration of the first TCI state. The second PL RS may be configured in the configuration of the second TCI state.

[0067] Scenarios for asymmetric DL sTRP / UL mTRP

[0068] A heterogenous network may be used to improve the UL throughput. Generally, the heterogenous network may be constructed by various types of cells (e.g., a macro cell, a micro cell, a pico cell, and a femto cell). Each type of cells may have different coverage ranges. For instance, macro cells may have the largest coverage range, and the coverage range of micro cells may be within the converge range of a macro cell. FIG. 1 is a diagram illustrating a heterogenous network 100A according to an example implementation of the present disclosure. In the heterogenous network 100A, two micro cells, including the micro cell 106 and the micro cell 108, are deployed in the coverage of the macro cell 104. The UE 102 is located in the coverage of the macro cell 104, the micro cell 106, and the micro cell 108.

[0069] In this example in FIG. 1, the UE 102 may transmit UL signals to either the macro cell gNB or non-co-located micro cell nodes. Due to the limited UE transmit power, the UE 102 may transmit UL signals to the micro cell node(s) in order to maximize UL throughput. For DL transmission, since the macro cell gNB may have a larger power rating than the micro cell, it does not matter whether the UE 102 receives the DL signals from the macro cell gNB or micro cells. However, the network may reduce or even turn off DL transmission(s) from micro cell(s) to reduce network energy consumption if the UE 102 receives the DL signals from the macro cell gNB. Based on the consideration above, no matter for the UE 102 or the network, it may be beneficial that the UE 102 receives the DL signal(s) from the macro cell gNB and transmits the UL signal(s) to the micro cell node(s). Accordingly, how to achieve the asymmetric DL single TRP and UL multi-TRP deployment scenarios may be discussed in the present disclosure. For the asymmetric DL single TRP and UL multi-TRP deployment scenarios, two scenarios may be identified in the present disclosure as below.

[0070] Scenario#1: The UE only receives DL signals from the TRP#1 but transmits UL signals to both TRP#1 and TRP#2.

[0071] FIG. 2A is a diagram 200A illustrating DL transmission in a first asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure. The UE 202 may receive DL signals from TRP#1 204, which may be referred to as a regular TRP. FIG. 2B is a diagram 200B illustrating UL transmission in the first asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure. The UE 202 may transmit UL signals to both TRP#1 204 and TRP#2 206, which may be referred to as an UL-only TRP.

[0072] A regular TRP may mean that the TRP may transmit DL signals to a UE and receive UL signals from the UE. An UL-only TRP may mean that the TRP may not transmit any DL signals to a UE but only receive UL signals from the UE. In some implementations, an UL-only TRP may mean that the TRP may only receive UL signals from a UE but not transmit, to the UE, any DL signals that are used for UE measurement or pathloss determination.

[0073] Scenario#2: The UE only receives DL signals from the TRP #1 but transmits UL signals to TRP#2 and TRP #3.

[0074] FIG. 3A is a diagram 300A illustrating DL transmission in a second asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure. The UE 302 may receive DL signals from TRP#1 304, which may be referred to as a regular TRP. FIG. 3B is a diagram 300B illustrating UL transmission in the second asymmetric DL sTRP / UL mTRP deployment scenario, according to an example implementation of the present disclosure. The UE 302 may transmit UL signals to both TRP#2 306 and TRP#3 308, each of which may be referred to as an UL-only TRP.

[0075] For both the Scenario#1 and the Scenario#2, one of the critical issues may be UL power control. Generally, the UL transmission power may be determined by several parameters, such as the UE configured maximum output power (e.g., PCMAX), the value of the pathloss compensation coefficient (e.g., α), and the downlink path loss. Among these parameters, the downlink path loss may be calculated by the UE using a DL RS. Since the UL-only TRP may not transmit any DL signals (e.g., at least the DL signals for the UE to determine and / or calculate DL path loss), including DL RS(s), to the UE, the UE may be unable to determine the transmission power for the UL transmission(s) between the UE and the UL-only TRP.

[0076] Specifically, for the first scenario illustrated in FIGS. 2A and 2B, the UE 202 may not be able to determine the transmission power for the UL transmission between the UE 202 and the TRP#2 206. For the second scenario illustrated in FIGS. 3A and 3B, the UE 302 may not be able to determine the transmission power for the UL transmission between the UE 302 and the TRP#2 306 and the UL transmission between the UE 302 and the TRP#3 308. Therefore, how to enhance the power control may be a critical issue in order to achieve the asymmetric DL sTRP / UL mTRP deployment scenarios.

[0077] It should be noted that the first SRS resource set mentioned in this disclosure may be referred to as the SRS resource set associated with the TRP#1, TRP#2 or TRP#3, as illustrated in FIGS. 2A, 2B, 3A, and 3B. In addition, the first SRS resource set may be referred to as the SRS resource set with the lowest index.

[0078] It should be noted that the second SRS resource set mentioned in this disclosure may be referred to as the SRS resource set associated with the TRP#1, TRP#2, or TRP#3. In addition, the second SRS resource set may be referred to as the SRS resource set with a larger index than all configured SRS resource sets.

[0079] It should be noted that the first TCI state (e.g., joint TCI state or UL TCI state) mentioned in this disclosure may be referred to as the TCI state (e.g., joint TCI state or UL TCI state) applied for the UL transmission toward the TRP#1, TRP#2 or TRP#3. In addition, the first TCI state (e.g., joint TCI state or UL TCI state) may be referred to as the TCI state (e.g., joint TCI state or UL TCI state) indicated in the first TCI field included in a DL DCI.

[0080] It should be noted that the second TCI state (e.g., joint TCI state or UL TCI state) mentioned in this disclosure may be referred to as the TCI state (e.g., joint TCI state or UL TCI state) applied for the UL transmission toward the TRP#1, TRP#2 or TRP#3. In addition, the second TCI state (e.g., joint TCI state or UL TCI state) may be referred to as the TCI state (e.g., joint TCI state or UL TCI state) indicated in the second TCI field included in a DL DCI.

[0081] It should be noted that the first TCI field indicating the first TCI state (e.g., joint TCI state or UL TCI state) and the second TCI state field indicating the second TCI state (e.g., joint TCI state or UL TCI state) may be included in the same DL DCI.

[0082] Pathloss Determination for the UL Power Control

[0083] Generally, when a UE performs the UL transmission to a specific TRP / gNB, the UE may be required to determine the transmit power for the UL transmission based on the configured parameters. Among these configured transmit power parameters, most of them may be configured via RRC signaling, but the pathloss RS that is used by UE to calculate pathloss may be configured to the UE via several ways. For instance, the UE may obtain the configuration of the pathloss RS via RRC signaling or MAC CE. Furthermore, the UE may obtain the configuration of the pathloss RS based on the default behavior. For example, if the UE is not configured with any pathloss RS, the UE may use an RS resource from an SSB with the same SSB index as the one the UE uses to obtain the MIB. Based on these transmit power parameters, the UE may determine the transmit power for different UL transmissions.

[0084] Pathloss Offset Determination for the UL Power Control

[0085] In the asymmetric DL sTRP / UL mTRP deployment scenarios, the UL-only TRP is defined as the TRP that does not transmit any DL signals (or at least the DL signals for the UE to perform measurements and to determine / calculate DL path loss) to a UE. In other words, the UE may not receive any DL signals (or any DL signals for the UE to perform measurements and to determine / calculate DL path loss) from the UL-only TRPs. As such, the UE may be required to calculate the pathloss for determining the transmit power of the UL transmission between the UE and the UL-only TRP without receiving the DL RSs from the UL-only TRP. However, the UE may still need to obtain a DL RS to determine the pathloss between the UE and the UL-only TRP. Therefore, the DL RS(s) transmitted from a regular TRP, or a configured DL RS(s) regardless of being transmitted from a regular TRP or special TRP (e.g., DL-only TRP), may be used to be the pathloss RS for determining the pathloss between the UE and the UL-only TRP.

[0086] Since the channel characteristic between the UE and the regular TRP may be different from the channel characteristic between the UE and the UL-only TRP, or for other reasons, the pathloss may be adjusted by a pathloss offset if the UE uses the DL RS(s) from the regular TRP to determine the pathloss between the UE and the UL-only TRP. Hence, configuring the pathloss offset to the UE may be critical in the asymmetric DL sTRP / UL mTRP deployment scenarios.

[0087] For different types of UL transmission (e.g., PUSCH transmission, PUCCH transmission, and SRS transmission), a UE may be configured with a joint TCI state or a UL TCI state to determine the transmit beam. For multi-TRP based UL transmission, the UE may be configured with two joint TCI states or two UL TCI states for the UL transmissions toward different TRPs.

[0088] For example, one joint TCI state for the UL transmission towards one TRP and another joint TCI state for the UL transmission towards another TRP. For example, one UL TCI state for the UL transmission towards one TRP and another UL TCI state for the UL transmission towards another TRP. For example, one joint TCI state for the UL transmission towards one TRP and one UL TCI state for the UL transmission towards another TRP.

[0089] The UE may be configured with two SRS resource sets with usage set to ‘codebook’ or ‘non-codebook’. For example, the two SRS resource sets may have the usage set to ‘codebook’. For example, the two SRS resource sets may have the usage set to ‘non-codebook’. For example, one of the two SRS resource sets may have the usage set to ‘codebook’ and the other one of the two SRS resource sets may have the usage set to ‘non-codebook’. In addition, each SRS resource set may be associated with a TRP.

[0090] Since each UL transmission may be associated with a configured TCI state (e.g., a joint TCI state or an UL TCI state), one way to configure the pathloss offset to the UE is including the pathloss offset parameter in the TCI state configuration. Candidate values associated with the RRC field / parameter indicating the pathloss offset value may be positive values, negative values, or zero. In addition, the unit of the candidate values associated with the RRC field / parameter indicating the pathloss offset value may be dB.

[0091] In some implementations, a UE may be configured with one or more TCI state configuration(s) (e.g., joint TCI state configuration(s) or UL TCI state configuration(s)) by the gNB via RRC signaling. Each TCI state configuration may include a pathloss offset parameter to determine the UL transmit power for the corresponding UL transmission. When the UE is indicated a TCI state by the gNB to perform a UL transmission and the RRC configuration of the indicated TCI state includes the pathloss offset parameter, the UE may calculate the path loss based on the configured PL RS and the pathloss offset included in the indicated TCI state configuration for determining the UL transmit power for the UL transmission. Each TCI state configuration may be associated with one UL-only TRP (and / or SRS resource set). One or more pathloss offset parameters included in the corresponding TCI state configuration may be associated with the corresponding UL-only TRP (and / or corresponding SRS resource set). Thus, the UE may apply the one or more pathloss offset parameters corresponding to the UL-only TRP to determine / calculate the DL path loss for the corresponding UL-only TRP (and / or corresponding SRS resource set).

[0092] In some implementations, for multi-TRP based UL transmission, a UE may be configured with two SRS resource sets (e.g., a first SRS resource set and a second SRS resource set). The UE may be indicated two TCI states (e.g., joint TCI state configuration(s) or UL TCI state configuration(s)) in a DL DCI format (e.g., DCI format 1_0 or 1_1). The first TCI state may be associated with the first SRS resource set and the second TCI state may be associated with the second SRS resource set. If the RRC configuration of the first TCI state includes a pathloss offset parameter, the UE may calculate the path loss based on the configured PL RS and the pathloss offset included in the first TCI state configuration for determining the UL transmit power for the UL transmission associated with the first SRS resource set. If the RRC configuration of the first TCI state does not include a pathloss offset parameter or if the field of pathloss offset parameter in the RRC configuration of the first TCI state is absent, the UE may calculate the path loss based on the configured PL RS for determining the UL transmit power for the UL transmission associated with the first SRS resource set. If the RRC configuration of the second TCI state includes a pathloss offset parameter, the UE may calculate the path loss based on the configured PL RS and the pathloss offset included in the second TCI state configuration for determining the UL transmit power for the UL transmission associated with the second SRS resource set. If the RRC configuration of the second TCI state does not include a pathloss offset parameter or if the field of pathloss offset parameter in the RRC configuration of the second TCI state is absent, the UE may calculate the path loss based on the configured PL RS for determining the UL transmit power for the UL transmission associated with the second SRS resource set.

[0093] The pathloss offsets associated with the first TCI state (and / or the first SRS resource set), which may be referred to as the first pathloss offset, and the second TCI state (and / or the second SRS resource set), which may be referred to as the second pathloss offset, may be different. In addition, the first pathloss offset and the second pathloss offset may be updated simultaneously or separately.

[0094] If the first pathloss offset and the second pathloss offset are updated simultaneously, the UE may receive a MAC CE indicating two values (e.g., positive, negative, or zero in dB), each associated with either the first or second pathloss offset. If the first and second pathloss offsets are updated separately, the UE may receive two MAC CEs, each used to update one of the pathloss offsets, with each MAC CE indicating a value (e.g., positive, negative, or zero in dB) for the corresponding offset.

[0095] In some implementations, the pathloss offset value may be defined as a range of variables (e.g., -2 dB to 2 dB). In this case, a table with multiple entries may be defined, and the MAC CE may indicate one entry corresponding to a specific range of offset values.

[0096] In some implementations, a base station (e.g., a gNB) may update the pathloss offset(s) configured to a UE via a MAC CE and / or RRC signaling (e.g., an RRC message, an IE in an RRC message).

[0097] In some implementations, the pathloss offset associated with a TCI state (e.g., joint TCI state or UL TCI state) may be updated by the RRC signaling.

[0098] In some implementations, the pathloss offset may be updated by the TCI state activation / deactivation MAC CE. The TCI state activation / deactivation MAC CE may include one or more pathloss offset update field(s) to provide a value or a delta value for updating the pathloss offset(s) associated with different TCI states. Each pathloss offset update field may be associated with a TCI state. In some implementations, the value indicated in the pathloss offset update field may be selected from the candidate values of the pathloss offset parameter configured by the gNB to the UE through the RRC signaling.

[0099] In some implementations, the value indicated in the pathloss offset update field may be selected from multiple predefined values, and the updated offset may be the combination of the configured pathloss offset and the value indicated in the pathloss offset update field included in the TCI state activation / deactivation MAC CE. The multiple predefined values may be listed in a table. In some implementations, the value indicated in the pathloss offset update field may correspond to an index. Each index value may correspond to a pathloss offset value in a table. The table may be specified or predefined.

[0100] In some implementations, the value indicated in the pathloss offset update field may correspond to an index. Each index value may correspond to a step value (e.g., a positive value, a negative value, zero) in a table. The table may be specified or predefined. In some implementations, one bit field may indicate positive or negative. For example, ‘1’ may correspond to positive and ‘0’ may correspond to negative. The UE may determine and / or calculate the pathloss offset based on the step value and the stored (original) pathloss offset value.

[0101] In some implementations, the SP SRS activation / deactivation MAC CE and / or the Enhanced SP / AP SRS Spatial Relation Indication MAC CE may update the pathloss offset. The SP SRS activation / deactivation MAC CE and / or Enhanced SP / AP SRS Spatial Relation Indication MAC CE may include one or more pathloss offset update field(s) to provide the (delta) value for updating the pathloss offset(s) associated with different SRS resources. Each pathloss offset update field may be associated with an SRS resource. In some implementations, the value indicated in the pathloss offset update field may be selected from the candidate values of the pathloss offset parameter. In some implementations, the value indicated in the pathloss offset update field may be selected from multiple predefined values and the updated offset may be the combination of the configured pathloss offset and the value indicated in the pathloss offset update field included in the SP SRS activation / deactivation MAC CE and / or Enhanced SP / AP SRS Spatial Relation Indication MAC CE. It should be noted that the multiple predefined values may be listed in a table.

[0102] In addition to the TCI state, a UE may be configured with a spatial relation information to determine a UL transmit beam via RRC signaling. Since each UL transmission may be associated with a spatial relation information, another way to provide the pathloss offset may be put the pathloss offset parameter in the spatial relation information. In other words, the RRC configured spatial relation information may include an RRC parameter used to indicate the pathloss offset.

[0103] PHR Enhancement for Asymmetric DL sTRP / UL mTRP Deployment Scenarios

[0104] In order to provide more information to the gNB for determining the UL transmit power parameters for UL transmissions, a UE may transmit a PH report to the gNB. A PH report procedure may be used to provide the serving gNB with at least one of the following information:

[0105] Type 1 power headroom: the difference between the nominal UE maximum transmit power and the estimated power for UL-SCH transmission per activated Serving Cell.

[0106] Type 2 power headroom: the difference between the nominal UE maximum transmit power and the estimated power for UL-SCH and PUCCH transmission on SpCell of the other MAC entity (e.g., E-UTRA MAC entity in EN-DC, NE-DC, and NGEN-DC cases).

[0107] Type 3 power headroom: the difference between the nominal UE maximum transmit power and the estimated power for SRS transmission per activated Serving Cell.

[0108] MPE P-MPR: the power backoff to meet the MPE FR2 requirements for a Serving Cell operating on FR2.

[0109] For the asymmetric DL sTRP / UL mTRP deployment scenarios, since the UL-only TRP may not provide PL RS(s) to the UE, the trigger condition for the PHR procedure corresponding to the UL-only TRP may be required to enhance.

[0110] In some implementations, at least one of the following RRC parameters / higher layer parameters may be configured to a UE for the PHR procedure:

[0111] phr-PeriodicTimer: It may be the value in the number of subframes for PHR reporting period for the corresponding UL transmission.

[0112] phr-PeriodicTimer2: It may be the value in the number of subframes for PHR reporting period for the corresponding UL transmission. This field / parameter may be present if there are any UL transmissions associated with the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field. In some implementations, this field / parameter may be included in the TCI state configuration. In some implementation, this field / parameter may be included in the PHR configuration (e.g., PHR-Config). In some implementations, if the field / parameter is not present or is absent, the UE may not trigger the corresponding PHR reporting. This applies even if a corresponding UL transmission occurs under a UL-only TRP or is associated with a TCI state whose configuration includes the RRC field / parameter used to indicate the pathloss offset.

[0113] phr-ProhibitTimer: It may be the prohibit timer for the PHR for the corresponding UL transmission. The phr-ProhibitTimer may also be referred to as the first RRC parameter in the present disclosure.

[0114] phr-Tx-PowerFactorChange: It may be a threshold (e.g., value in dB) configured to a UE for deciding whether to trigger PHR. The phr-Tx-PowerFactorChange may also be referred to as the second RRC parameter in the present disclosure.

[0115] phr-PathlossOffsetChange: It may be a threshold (e.g., value in dB) configured to a UE for deciding whether to trigger PHR based on the variation of the RRC-configured pathloss offset and / or the MAC CE indicated updated pathloss offset value. In some implementations, the RRC-configured pathloss offset may be referred to as the third RRC parameter in the present disclosure. In some implementations, the phr-PathlossOffsetChange may be referred to as the fourth RRC parameter in the present disclosure.

[0116] twoPHRMode: It may be used to indicate whether the power headroom may be reported as two PHs or not, where each PH may be associated with an SRS resource set or a TCI state. In some implementations, if a UE is configured with the twoPHRMode, the UE may transmit two PHs (e.g., each PH associated with an SRS resource set / a TCI state / a TRP / a beam / a panel) corresponding to a serving cell in a PHR MAC CE.

[0117] In some implementations, if the phr-ProhibitTimer expires or has expired and the pathloss offset has changed more than the phr-Tx-PowerFactorChange dB or phr-PathlossOffsetChange dB, the UE may trigger the PHR. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including two PHs associated with a serving cell to the gNB. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including a PH and two PCMAXvalues associated with a serving cell, where two PCMAXvalues may be associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), respectively. The first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP or UL-only TRP. The second TRP may be the regular TRP or UL-only TRP. In addition, the PH included in the PHR may be determined based on at least one of the following:

[0118] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0119] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0120] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0121] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0122] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0123] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0124] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0125] The UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0126] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0127] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0128] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0129] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0130] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the TCI state whose configuration does not include pathloss offset field / parameter.

[0131] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with an actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission), the UE may compute / calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission).

[0132] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with a reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission), the UE may compute / calculate the PH based on the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission).

[0133] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the TCI state whose configuration includes the pathloss offset field / parameter.

[0134] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with an actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission), the UE may compute / calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission).

[0135] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with a reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission), the UE may compute / calculate the PH based on the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission).

[0136] In some implementations, the PHR including two PHs may be the single entry PHR format or the multiple entry PHR format.

[0137] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including a PH associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field.

[0138] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0139] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0140] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0141] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field may include a PCMAXvalue and a PH value associated with a serving cell.

[0142] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field may include a PCMAXvalue and a PH value associated with a serving cell. The PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR).

[0143] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0144] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0145] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0146] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including a PH associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field.

[0147] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0148] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0149] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0150] In some implementations, if the phr-ProhibitTimer expires or has expired and the pathloss, which is calculated by the configured PL RS and the configured pathloss offset, has changed more than the phr-Tx-PowerFactorChange dB, the UE may trigger the PHR. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including two PHs associated with a serving cell to the gNB. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including a PH and two PCMAXvalues associated with a serving cell, where two PCMAXvalues may be associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), respectively. The first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP or UL-only TRP. The second TRP may be the regular TRP or UL-only TRP. In addition, the PH included in the PHR may be determined based on at least one of the following:

[0151] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0152] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0153] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0154] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0155] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0156] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0157] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0158] The UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0159] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0160] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0161] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0162] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0163] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the TCI state whose configuration does not include pathloss offset field / parameter.

[0164] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with an actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission), the UE may compute / calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission).

[0165] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with a reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission), the UE may compute / calculate the PH based on the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission).

[0166] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the TCI state whose configuration includes the pathloss offset field / parameter.

[0167] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with an actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission), the UE may compute / calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission).

[0168] In some implementations, if the TCI state (e.g., joint TCI state or UL TCI state) is associated with a reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission), the UE may compute / calculate the PH based on the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission).

[0169] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the UE may (only) transmit a PHR including a PH associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field.

[0170] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0171] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0172] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0173] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field may include a PCMAXvalue and a PH value associated with a serving cell.

[0174] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field may include a PCMAXvalue and a PH value associated with a serving cell. The PHR associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR).

[0175] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0176] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0177] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0178] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field.

[0179] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0180] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0181] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0182] In some implementations, for the asymmetric DL sTRP / UL mTRP deployment scenarios, two PHR periodic timers (e.g., the phr-PeriodicTimer and phr-PeriodicTimer2) may be configured to a UE. Each PHR periodic timer may be associated with a UL transmission corresponding to a specific SRS resource set / TRP. When one of the PHR periodic timers expires, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered.

[0183] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR).

[0184] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may include a PCMAXvalue and a PH value associated with a serving cell.

[0185] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may include a PCMAXvalue and a PH value associated with a serving cell.

[0186] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission transmitted by the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR).

[0187] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission associated with the first TCI state, the first SRS resource set, or the TCI state indicated in the first TCI field included in a DL DCI, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may (only) include a PCMAXvalue and a PH value associated with a serving cell.

[0188] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission associated with the second TCI state, the second SRS resource set, or the TCI state indicated in the second TCI field included in a DL DCI, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may (only) include a PCMAXvalue and a PH value associated with a serving cell.

[0189] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission associated with the first TCI state, the first SRS resource set, or the TCI state indicated in the first TCI field included in a DL DCI, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may include a PCMAXvalue and a PH value associated with a serving cell.

[0190] In some implementations, when one of the PHR periodic timers expires and the expired periodic timer is associated with the UL transmission associated with the second TCI state, the second SRS resource set, or the TCI state indicated in the second TCI field included in a DL DCI, the PHR procedure corresponding to the UL transmission associated with the expired PHR periodic timer may be triggered and the triggered PHR may include a PCMAXvalue and a PH value associated with a serving cell.

[0191] In some implementations, the value of the PHR periodic timer associated with the UL transmission transmitted to the gNB by a TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field may be set to ‘infinity’.

[0192] In some implementations, if the MAC entity has UL resources allocated for a new transmission and it is the first UL resource allocated for a new transmission since the last MAC reset, the UE may start two periodic timers (e.g., the phr-PeriodicTimer and phr-PeriodicTimer2). The phr-PeriodicTimer and phr-PeriodicTimer2 may be associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), where the first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP and UL-only TRP. The second TRP may be the regular TRP and UL-only TRP.

[0193] In some implementations, if the MAC entity has UL resources allocated for a new transmission, the UE determines that at least one PHR corresponding to the first TCI state (and / or the first SRS resource set) has been triggered and not cancelled, and the allocated UL resources can accommodate the MAC CE for PHR which the MAC entity is configured to transmit, the UE may start or restart the periodic timer corresponding to the first TCI state (and / or the first SRS resource set) and / or the UE may cancel all triggered PHR(s) corresponding to the first TCI state (and / or the first SRS resource set). If the MAC entity has UL resources allocated for a new transmission, the UE determines that at least one PHR corresponding to the second TCI state (and / or the second SRS resource set) has been triggered and not cancelled, and the allocated UL resources can accommodate the MAC CE for PHR which the MAC entity is configured to transmit, the UE may start or restart the periodic timer corresponding to the second TCI state (and / or the second SRS resource set) and / or the UE may cancel all triggered PHR(s) corresponding to the second TCI state (and / or the second SRS resource set). The first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP and UL-only TRP. The second TRP may be the regular TRP and UL-only TRP.

[0194] In some implementations, if the MAC entity has UL resources allocated for a new transmission and it is the first UL resource allocated for a new transmission since the last MAC reset, the UE may start the periodic timer.

[0195] In some implementations, if the MAC entity has UL resources allocated for a new transmission, the UE determines that at least one PHR has been triggered and not cancelled, and the allocated UL resources can accommodate the MAC CE for PHR which the MAC entity is configured to transmit, the UE may start or restart the periodic timer and the prohibit timer and / or cancel all triggered PHR(s).

[0196] In some implementations, at least one of the following RRC parameters / higher layer parameters may be configured to a UE for the PHR procedure:

[0197] phr-PeriodicTimer: It may be the value in the number of subframes for PHR reporting period for the corresponding UL transmission.

[0198] phr-ProhibitTimer: It may be the prohibit timer for the PHR for the corresponding UL transmission.

[0199] phr-Tx-PowerFactorChange: It may be a threshold (e.g., value in dB) configured to a UE for deciding whether to trigger PHR.

[0200] phr-PathlossOffsetChange: It may be a threshold (e.g., value in dB) configured to a UE for deciding whether to trigger PHR based on the variation of the RRC-configured pathloss offset and / or the MAC CE indicated updated pathloss offset value.

[0201] twoPHRMode: It may be used to indicate whether the power headroom may be reported as two PHs or not, where each PH may be associated with an SRS resource set or a TCI state. In some implementations, if a UE is configured with the twoPHRMode, the UE may transmit two PHs (each PH associated with an SRS resource set / a TCI state / a TRP / a beam / a panel) corresponding to a serving cell in a PHR MAC CE.

[0202] In some implementations, if the phr-ProhibitTimer expires or has expired and any one of the configured pathloss offset (e.g., a pathloss offset associated with the first SRS resource set / first indicated TCI state or a pathloss offset associated with the second SRS resource set / second indicated TCI state) has changed more than the phr-Tx-PowerFactorChange dB or phr-PathlossOffsetChange dB, the UE may trigger the PHR. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including two PHs associated with a serving cell to the gNB. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including a PH and two PCMAXvalues associated with a serving cell, where two PCMAXvalues may be associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), respectively. The first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP or UL-only TRP. The second TRP may be the regular TRP or UL-only TRP. In addition, the PH included in the PHR may be determined based on at least one of the following:

[0203] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0204] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0205] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set), or the second TCI state (and / or the second SRS resource set).

[0206] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0207] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0208] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0209] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0210] The UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0211] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0212] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0213] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0214] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0215] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission whose pathloss offset is larger than the configured threshold value.

[0216] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0217] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0218] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0219] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the first TCI state (or the TCI state indicated in the first TCI field in a DL DCI) may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The first TCI state may be associated with the first SRS resource set.

[0220] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the first TCI state (or the TCI state indicated in the first TCI field in a DL DCI) may (only) include a PCMAXvalue and a PH value associated with a serving cell. The first TCI state may be associated with the first SRS resource set.

[0221] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the second TCI state (or the TCI state indicated in the second TCI field in a DL DCI) may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The second TCI state may be associated with the second SRS resource set.

[0222] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the second TCI state (or the TCI state indicated in the second TCI field in a DL DCI) may (only) include a PCMAXvalue and a PH value associated with a serving cell. The second TCI state may be associated with the second SRS resource set.

[0223] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0224] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0225] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0226] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission associated with the first SRS resource set / first indicated TCI state (e.g., joint TCI state or UL TCI state).

[0227] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0228] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0229] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0230] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission associated with the second SRS resource set / second indicated TCI state (e.g., joint TCI state or UL TCI state).

[0231] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0232] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0233] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0234] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission whose pathloss offset or pathloss offset change is larger than the other one.

[0235] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0236] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0237] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0238] In some implementations, if the phr-ProhibitTimer expires or has expired and the pathloss, calculated by the configured PL RS and the configured pathloss offset(s) (e.g., pathloss offset1 and / or pathloss offset2), has changed more than phr-Tx-PowerFactorChange dB, the UE may trigger the PHR. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including two PHs associated with a serving cell to the gNB. In some implementations, in a case that the twoPHRMode is configured to the UE, the UE may transmit a PHR including a PH and two PCMAXvalues associated with a serving cell, where two PCMAXvalues may be associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), respectively. The first TCI state (and / or the first SRS resource set) may be associated with the first TRP and the second TCI state (and / or the second SRS resource set) may be associated with the second TRP. The first TRP may be the regular TRP or UL-only TRP. The second TRP may be the regular TRP or UL-only TRP. In addition, the PH included in the PHR may be determined based on at least one of the following:

[0239] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0240] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) or the reference UL transmission (e.g., reference PUSCH transmission or reference SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0241] The UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set), or the second TCI state (and / or the second SRS resource set).

[0242] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0243] In some implementations, in case that there are two actual UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0244] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0245] In some implementations, in case that there is (only) one actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the actual UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the actual UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0246] The UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) corresponding to the first TCI state (and / or the first SRS resource set) or the second TCI state (and / or the second SRS resource set).

[0247] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0248] In some implementations, in case that there are two reference UL transmissions (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first TCI state (and / or the first SRS resource set) and the second TCI state (and / or the second SRS resource set), the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0249] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI.

[0250] In some implementations, in case that there is (only) one reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) and the reference UL transmission is associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI, the UE may calculate the PH based on the reference UL transmission (e.g., actual PUSCH transmission or actual SRS transmission) associated with the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0251] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission whose pathloss is larger than the configured threshold value. The pathloss may be calculated by the configured PL RS and the configured pathloss offset(s) (e.g., pathloss offset1 and / or pathloss offset2).

[0252] Preferably, it is noted that the specific RRC parameter / field may be used to indicate the UE that it operates on the asymmetric DL sTRP / UL mTRP deployment scenarios. For example, the RRC parameter / field may take ENUMERATED format with value ‘true’.

[0253] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0254] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0255] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0256] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the first TCI state (or the TCI state indicated in the first TCI field in a DL DCI) may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The first TCI state may be associated with the first SRS resource set.

[0257] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the first TCI state (or the TCI state indicated in the first TCI field in a DL DCI) may (only) include a PCMAXvalue and a PH value associated with a serving cell. The first TCI state may be associated with the first SRS resource set.

[0258] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the second TCI state (or the TCI state indicated in the second TCI field in a DL DCI) may (only) include the PCMAXvalue (e.g., the PH field may be absent in the PHR). The second TCI state may be associated with the second SRS resource set.

[0259] In some implementations, in a case that the twoPHRMode is not configured to the UE and / or another specific RRC parameter / field is configured to the UE, the PHR associated with the UL transmission transmitted by the second TCI state (or the TCI state indicated in the second TCI field in a DL DCI) may (only) include a PCMAXvalue and a PH value associated with a serving cell. It is noted that the second TCI state may be associated with the second SRS resource set.

[0260] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0261] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0262] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#1. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0263] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission associated with the first SRS resource set / first indicated TCI state (e.g., joint TCI state or UL TCI state).

[0264] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0265] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0266] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0267] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field is configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission associated with the second SRS resource set / second indicated TCI state (e.g., joint TCI state or UL TCI state).

[0268] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0269] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0270] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0271] In some implementations, in a case that the twoPHRMode is not configured to the UE or another specific RRC parameter / field configured to the UE, the UE may transmit a PHR including the PH associated with the UL transmission whose pathloss or pathloss change is larger than the other one. The pathloss may be calculated by the configured PL RS and the configured pathloss offset(s) (e.g., pathloss offset1 and / or pathloss offset2)

[0272] The specific RRC parameter / field may indicate that the UE operates in an asymmetric DL sTRP / UL mTRP deployment scenario. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0273] The specific RRC parameter / field may indicate that the UE operates on the Scenario#2. For example, the RRC parameter / field may use an ENUMERATED format with the value ‘true’.

[0274] The specific RRC parameter / field may indicate that the UE operates on the Scenario#1 or Scenario#2. For example, the specific RRC parameter / field may indicate Scenario#2. The RRC parameter / field may use an ENUMERATED format with a value selected from the set {‘scenario1’, ‘scenario2’}.

[0275] In some implementations, the PHR may (only) be triggered for the UL transmission associated with the TCI state (e.g., joint TCI state or UL TCI state) whose configuration does not include the pathloss offset parameter / field. That is, the PHR may not be triggered for the UL transmission associated with the TCI state (e.g., joint TCI state or UL TCI state) whose configuration includes the pathloss offset parameter / field

[0276] In some implementations, for the asymmetric DL sTRP / UL mTRP deployment scenarios, the PHR corresponding to the UL transmission between the UE and the UL-only TRP (or the PHR corresponding to the UL transmission associated with the TCI state whose configuration includes the pathloss offset parameter / field) may be indicated to report by the gNB via DCI and / or MAC CE instead of being triggered by the UE.

[0277] In some implementations, an UL DCI used to schedule UL transmission (e.g., SRS transmission and / or PUSCH transmission) may indicate to the UE whether to trigger a PHR. A DCI field included in the UL DCI may indicate whether to trigger the PHR. The field may be a one-bit field. In some implementations, if the bit is set to ‘0’, it may instruct the UE to trigger the PHR. If the bit is set to ‘1’, it may indicate not to trigger the PHR or may represent a reserved value. For example, if the bit is set to ‘1’ and a PHR has already been triggered, the UE may stop the PHR procedure. Similarly, in some implementations, if the bit is set to ‘1’, it may instruct the UE to trigger the PHR, and if set to ‘0’, it may indicate not to trigger the PHR or may represent a reserved value.

[0278] The PHR may be associated with the SRS resource set (and / or the TCI state) associated with the UL transmission scheduled by the UL DCI. The field used to indicate to the UE whether to trigger the PHR may be present when the configuration of the TCI state (e.g., joint TCI state or UL TCI state) applied for the scheduled UL transmission includes the RRC field / parameter for indicating the pathloss offset value.

[0279] In some implementations, an UL DCI used to schedule UL transmission (e.g., SRS transmission and / or PUSCH transmission) may indicate to the UE whether to trigger a PHR. A DCI field included in the UL DCI may instruct the UE to trigger the PHR corresponding to a specific SRS resource set (and / or TCI state). The field may be a one-bit field. In some implementations, if the bit is set to ‘0’, it may instruct the UE to trigger the PHR corresponding to the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI. If the bit is set to ‘1’, it may instruct the UE to trigger the PHR corresponding to the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI. Similarly, in some implementations, if the bit is set to ‘1’, it may instruct the UE to trigger the PHR corresponding to the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI. If the bit is set to ‘0’, it may instruct the UE to trigger the PHR corresponding to the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0280] The field used to indicate to the UE to trigger the PHR corresponding to a specific SRS resource set (and / or TCI state) may be present when the configuration of the TCI state (e.g., joint TCI state or UL TCI state) applied for the scheduled UL transmission includes the RRC field / parameter for indicating the pathloss offset value. In some implementations, a bitmap may be used for the indication, with each bit representing a respective SRS resource set. A bit value of ‘1’ may indicate the triggering of the PHR, while a bit value of ‘0’ may indicate the cancellation of the PHR report.

[0281] In some implementations, the MAC CE used to update the pathloss offset may include a field for indicating to the UE whether to trigger a PHR. The field may be a one-bit field. In some implementations, if the bit is set to ‘0’, it may instruct the UE to trigger the PHR. If the bit is set to ‘1’, it may indicate not to trigger the PHR or may represent a reserved value. For example, if the bit is set to ‘1’ and a PHR has already been triggered, the UE may stop the PHR procedure. Similarly, in some implementations, if the bit is set to ‘1’, it may instruct the UE to trigger the PHR, and if set to ‘0’, it may indicate not to trigger the PHR or may represent a reserved value. The PHR may be associated with the SRS resource set (and / or the TCI state) associated with the pathloss offset updated by the MAC CE. In some implementations, if the bit is set to ‘0’, it may instruct the UE to stop / cancel the (periodic) PHR reporting.

[0282] In some implementations, the field for indicating to the UE whether to trigger a PHR and / or the pathloss offset update field may be present when at least the configuration of the TCI state(s) (e.g., joint TCI state or UL TCI state) activated in the MAC CE includes the RRC field / parameter used to indicate the pathloss offset.

[0283] In some implementations, the field for indicating to the UE whether to trigger a PHR and / or the pathloss offset update field may be present when the configuration of the TCI state (e.g., joint TCI state or UL TCI state) associated with the spatial relation information indicated in the MAC CE includes the RRC field / parameter for indicating the pathloss offset.

[0284] In some implementations, the MAC CE used to update the pathloss offset may include a field for indicating to the UE to trigger the PHR corresponding to a specific SRS resource set (and / or TCI state). The field may be a one-bit field. In some implementations, if the bit is set to ‘0’, it may instruct the UE to trigger the PHR corresponding to the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI. If the bit is set to ‘1’, it may instruct the UE to trigger the PHR corresponding to the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI. Similarly, in some implementations, if the bit is set to ‘1’, it may instruct the UE to trigger the PHR corresponding to the first SRS resource set, the first TCI state, or the TCI state indicated in the first TCI field included in a DL DCI. If the bit is set to ‘0’, it may instruct the UE to trigger the PHR corresponding to the second SRS resource set, the second TCI state, or the TCI state indicated in the second TCI field included in a DL DCI.

[0285] The field used to indicate to the UE to trigger PHR corresponding to a specific SRS resource set (and / or TCI state) may be present when the configuration of the TCI state (e.g., joint TCI state or UL TCI state) applied for the scheduled UL transmission includes the RRC field / parameter for indicating the pathloss offset value. In some implementations, a bitmap may be used to indicate the triggering or cancellation of corresponding PHR subject to corresponding SRS resource set.

[0286] In some implementations, the field for indicating to the UE to trigger the PHR corresponding to a specific SRS resource set (and / or TCI state) and / or the pathloss offset update field may be present when at least the configuration of the TCI state(s) (e.g., joint TCI state or UL TCI state) activated in the MAC CE includes the RRC field / parameter used to indicate the pathloss offset.

[0287] In some implementations, the field for indicating to the UE to trigger the PHR corresponding to a specific SRS resource set (and / or TCI state) and / or the pathloss offset update field may be present when the configuration of the TCI state (e.g., joint TCI state or UL TCI state) associated with the spatial relation information indicated in the MAC CE includes the RRC field / parameter used to indicate the pathloss offset.

[0288] In some implementations, a UE may receive a MAC CE to update the pathloss offset value. If the UE receives the MAC CE after triggering a PHR but before transmitting the PHR, the UE may compute / calculate the PH in the PHR using the updated pathloss offset value if the MAC CE is received at least X symbols or slots before the scheduled PHR transmission. Otherwise, the UE may compute the PH in the PHR using the original pathloss offset.

[0289] FIG. 4 is a flowchart illustrating a method / process 400 performed by a UE for transmitting a PHR, according to an example implementation of the present disclosure. In the action 402, the process 400 may start by receiving, from a BS, a first RRC parameter indicating a prohibit timer. For example, the first RRC parameter may be the phr-ProhibitTimer. In the action 404, the process 400 may receive, from the BS, a second RRC parameter indicating a power change threshold. For example, the second RRC parameter may be the phr-Tx-PowerFactorChange.

[0290] In the action 406, the process 400 may receive, from the BS, a first indicated TCI state, a second indicated TCI state, a first SRS resource set, and a second SRS resource set. The first SRS resource set and the second SRS resource set may be associated with a first TRP and a second TRP, respectively. In some implementations, an indicated TCI state may be configured via RRC signaling, activated via a MAC CE, and / or indicated by DCI.

[0291] In the action 408, the process 400 may receive, from the BS, a third RRC parameter indicating a configured PL offset associated with the second indicated TCI state. For example, the third RRC parameter may be the PL offset associated with the second TRP. In some implementations, the third RRC parameter may be included in a TCI state configuration associated with the second indicated TCI state. In the action 410, the process 400 may receive, from the BS, a PL RS associated with the first indicated TCI state. For example, the UE may receive the PL RS from the first TRP.

[0292] In the action 412, the process 400 may perform a first PUSCH transmission associated with the first SRS resource set by applying the first indicated TCI state. In the action 414, the process 400 may perform a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state. An example illustration of the actions 412 and 414 may be referred to FIG. 2B, where the UE 202 performs UL transmission towards the TRP#1 204 and the TRP#2 206.

[0293] In the action 416, the process 400 may calculate an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset. Referring to the example illustrated in FIG. 2A and FIG. 2B, the UE 202 may receive the PL RS from the TRP#1 204. The UE may also receive the configured PL offset associated with the TRP#2 206. The UE 202 may then calculate an estimated PL value associated with the TRP#2 206 based on the PL RS received from the TRP#1 204 and the configured PL offset.

[0294] In the action 418, the process 400 may transmit, to the BS, a first PHR including a PH associated with the estimated PL value, in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired. The process 400 may then end. The action 418 may be referred to as a triggering condition for the PHR.

[0295] The steps / actions shown in FIG. 4 should not be construed as necessarily order dependent. The order in which the process is described is not intended to be construed as a limitation. Moreover, some of the actions shown in FIG. 4 may be omitted in some implementations and one or more actions shown in FIG. 4 may be combined.

[0296] The technical problem addressed by the method illustrated in FIG. 4 is how to achieve pathloss estimation in an asymmetric DL sTRP / UL mTRP deployment scenario. The proposed solution allows the UE to estimate the pathloss associated with a second TRP by leveraging a received PL RS from a first TRP and applying a configured PL offset. Therefore, the proposed solution is applicable for the asymmetric DL sTRP / UL mTRP deployment scenario. In addition, by incorporating the estimated pathloss into the PHR triggering condition, the UE can ensure timely and accurate PHR reporting, leading to improved uplink transmission power adjustments and enhanced system performance.

[0297] In some implementations, the UE may receive, from the BS, an update indication to update a value of the configured PL offset. In some implementations, the update indication may be received in a MAC CE. In some implementations, the update indication may be received in an RRC parameter. For example, the update indication may indicate a new value or a delta value, allowing the UE to update the previously stored PL offset by either replacing it with a new PL offset or adjusting it accordingly.

[0298] In some implementations, the UE may receive, from the BS, a fourth RRC parameter indicating a change threshold for the configured PL offset. In response to determining that the configured PL offset has changed more than the change threshold indicated in the fourth RRC parameter and that the prohibit timer has expired, the UE may transmit a second PHR to the BS. This may serve as an additional triggering condition for the PHR in addition to the one described in the action 418.

[0299] FIG. 5 is a flowchart illustrating a method / process 500 performed by a BS for receiving a PHR, according to an example implementation of the present disclosure. In the action 502, the process 500 may start by transmitting, to a UE, a first RRC parameter indicating a prohibit timer. In the action 504, the process 500 may transmit, to the UE, a second RRC parameter indicating a power change threshold. In the action 506, the process 500 transmit, to the UE, a first indicated TCI state, a second indicated TCI state, a first SRS resource set, and a second SRS resource set. In the action 508, the process 500 may transmit, to the UE, a third RRC parameter indicating a configured PL offset associated with the second indicated TCI state. In the action 510, the process 500 may transmit, to the UE, a PL RS associated with the first indicated TCI state. The process 500 may then end.

[0300] The UE may perform a first PUSCH transmission associated with the first SRS resource set by applying the first indicated TCI state. The UE may perform a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state. The UE may calculate an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset. The UE may transmit, to the BS, a first PHR including a PH associated with the estimated PL value, in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired.

[0301] The method illustrated in FIG. 5 is similar to that in FIG. 4, except that it is described from the perspective of the BS (instead of the UE).

[0302] FIG. 6 is a block diagram illustrating a node 600 for wireless communication in accordance with various aspects of the present disclosure. As illustrated in FIG. 6, a node 600 may include a transceiver 620, a processor 628, a memory 634, one or more presentation components 638, and at least one antenna 636. The node 600 may also include a radio frequency (RF) spectrum band module, a BS communications module, a network communications module, and a system communications management module, Input / Output (I / O) ports, I / O components, and a power supply (not illustrated in FIG. 6).

[0303] Each of the components may directly or indirectly communicate with each other over one or more buses 640. The node 600 may be a UE or a BS that performs various functions disclosed with reference to FIGS. 1 through 5.

[0304] The transceiver 620 has a transmitter 622 (e.g., transmitting / transmission circuitry) and a receiver 624 (e.g., receiving / reception circuitry) and may be configured to transmit and / or receive time and / or frequency resource partitioning information. The transceiver 620 may be configured to transmit in different types of subframes and slots including, but not limited to, usable, non-usable, and flexibly usable subframes and slot formats. The transceiver 620 may be configured to receive data and control channels.

[0305] The node 600 may include a variety of computer-readable media. Computer-readable media may be any available media that may be accessed by the node 600 and include volatile (and / or non-volatile) media and removable (and / or non-removable) media.

[0306] The computer-readable media may include computer-storage media and communication media. Computer-storage media may include both volatile (and / or non-volatile media), and removable (and / or non-removable) media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules, or data.

[0307] Computer-storage media may include RAM, ROM, EPROM, EEPROM, flash memory (or other memory technology), CD-ROM, Digital Versatile Disks (DVD) (or other optical disk storage), magnetic cassettes, magnetic tape, magnetic disk storage (or other magnetic storage devices), etc. Computer-storage media may not include a propagated data signal. Communication media may typically embody computer-readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave, or other transport mechanisms and include any information delivery media.

[0308] The term “modulated data signal” may mean a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. Communication media may include wired media, such as a wired network or direct-wired connection, and wireless media, such as acoustic, RF, infrared, and other wireless media. Combinations of any of the above listed components should also be included within the scope of computer-readable media.

[0309] The memory 634 may include computer-storage media in the form of volatile and / or non-volatile memory. The memory 634 may be removable, non-removable, or a combination thereof. Example memory may include solid-state memory, hard drives, optical-disc drives, etc. As illustrated in FIG. 6, the memory 634 may store a computer-readable and / or computer-executable instructions 632 (e.g., software codes) that are configured to, when executed, cause the processor 628 to perform various functions disclosed herein, for example, with reference to FIGS. 1 through 5. Alternatively, the instructions 632 may not be directly executable by the processor 628 but may be configured to cause the node 600 (e.g., when compiled and executed) to perform various functions disclosed herein.

[0310] The processor 628 (e.g., having processing circuitry) may include an intelligent hardware device, e.g., a Central Processing Unit (CPU), a microcontroller, an ASIC, etc. The processor 628 may include memory. The processor 628 may process the data 630 and the instructions 632 received from the memory 634, and information transmitted and received via the transceiver 620, the baseband communications module, and / or the network communications module. The processor 628 may also process information to send to the transceiver 620 for transmission via the antenna 636 to the network communications module for transmission to a CN.

[0311] One or more presentation components 638 may present data indications to a person or another device. Examples of presentation components 638 may include a display device, a speaker, a printing component, a vibrating component, etc.

[0312] In view of the present disclosure, it is obvious that various techniques may be used for implementing the disclosed concepts without departing from the scope of those concepts. Moreover, while the concepts have been disclosed with specific reference to certain implementations, a person of ordinary skill in the art may recognize that changes may be made in form and detail without departing from the scope of those concepts. As such, the disclosed implementations are to be considered in all respects as illustrative and not restrictive. It should also be understood that the present disclosure is not limited to the particular implementations disclosed and many rearrangements, modifications, and substitutions are possible without departing from the scope of the present disclosure.

Claims

1. A User Equipment (UE) for transmitting a Power Headroom Report (PHR), the UE comprising: 　　　　at least one processor; and 　　　　at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to: 　　　　　　　　receive, from a base station (BS), a first Radio Resource Control (RRC) parameter indicating a prohibit timer; 　　　　　　　　receive, from the BS, a second RRC parameter indicating a power change threshold; 　　　　　　　　receive, from the BS, a first indicated Transmission Configuration Indication (TCI) state, a second indicated TCI state, a first Sounding Reference Signal (SRS) resource set, and a second SRS resource set; 　　　　　　　　receive, from the BS, a third RRC parameter indicating a configured pathloss (PL) offset associated with the second indicated TCI state; 　　　　　　　　receive, from the BS, a PL reference signal (RS) associated with the first indicated TCI state; 　　　　　　　　perform a first physical uplink shared channel (PUSCH) transmission associated with the first SRS resource set by applying the first indicated TCI state; 　　　　　　　　perform a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state; 　　　　　　　　calculate an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset; and 　　　　　　　　in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired, transmit, to the BS, a first PHR including a power headroom (PH) associated with the estimated PL value.

2. The UE of claim 1, wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to: 　　　　receive, from the BS, an update indication to update a value of the configured PL offset.

3. The UE of claim 2, wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to: 　　　　receive, from the BS, a fourth RRC parameter indicating a change threshold for the configured PL offset; and 　　　　in response to determining that the configured PL offset has changed more than the change threshold indicated in the fourth RRC parameter and that the prohibit timer has expired, transmit a second PHR to the BS.

4. The UE of claim 2, wherein: 　　　　receiving the update indication comprises receiving the update indication in a Medium Access Control (MAC) Control Element (CE).

5. The UE of claim 2, wherein: 　　　　receiving the update indication comprises receiving the update indication in a fourth RRC parameter.

6. A Base Station (BS) for receiving a Power Headroom Report (PHR), the BS comprising: 　　　　at least one processor; and 　　　　at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the BS to: 　　　　　　　　transmit, to a User Equipment (UE), a first Radio Resource Control (RRC) parameter indicating a prohibit timer; 　　　　　　　　transmit, to the UE, a second RRC parameter indicating a power change threshold; 　　　　　　　　transmit, to the UE, a first indicated Transmission Configuration Indication (TCI) state, a second indicated TCI state, a first Sounding Reference Signal (SRS) resource set, and a second SRS resource set; 　　　　　　　　transmit, to the UE, a third RRC parameter indicating a configured pathloss (PL) offset associated with the second indicated TCI state; and 　　　　　　　　transmit, to the UE, a PL reference signal (RS) associated with the first indicated TCI state, wherein the UE: 　　　　performs a first physical uplink shared channel (PUSCH) transmission associated with the first SRS resource set by applying the first indicated TCI state; 　　　　performs a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state; 　　　　calculates an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset; and 　　　　in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired, transmits, to the BS, a first PHR including a power headroom (PH) associated with the estimated PL value.

7. The BS of claim 6, wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the BS to: 　　　　transmit, to the UE, an update indication to update a value of the configured PL offset.

8. The BS of claim 7, wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the BS to: 　　　　transmit, to the UE, a fourth RRC parameter indicating a change threshold for the configured PL offset; and 　　　　receive, from the UE, a second PHR in response to the UE determining that the configured PL offset has changed more than the change threshold indicated in the fourth RRC parameter and that the prohibit timer has expired.

9. The BS of claim 7, wherein: 　　　　transmitting the update indication comprises transmitting the update indication in a Medium Access Control (MAC) Control Element (CE).

10. The BS of claim 7, wherein: 　　　　transmitting the update indication comprises transmitting the update indication in a fourth RRC parameter.

11. A method performed by a User Equipment (UE) for transmitting a Power Headroom Report (PHR), the method comprising: 　　　　receiving, from a base station (BS), a first Radio Resource Control (RRC) parameter indicating a prohibit timer; 　　　　receiving, from the BS, a second RRC parameter indicating a power change threshold; 　　　　receiving, from the BS, a first indicated Transmission Configuration Indication (TCI) state, a second indicated TCI state, a first Sounding Reference Signal (SRS) resource set, and a second SRS resource set; 　　　　receiving, from the BS, a third RRC parameter indicating a configured pathloss (PL) offset associated with the second indicated TCI state; 　　　　receiving, from the BS, a PL reference signal (RS) associated with the first indicated TCI state; 　　　　performing a first physical uplink shared channel (PUSCH) transmission associated with the first SRS resource set by applying the first indicated TCI state; 　　　　performing a second PUSCH transmission associated with the second SRS resource set by applying the second indicated TCI state; 　　　　calculating an estimated PL value associated with the second SRS resource set based on the PL RS and the configured PL offset; and 　　　　in response to determining that the estimated PL value has changed more than the power change threshold and that the prohibit timer has expired, transmitting, to the BS, a first PHR including a power headroom (PH) associated with the estimated PL value.

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