Method and apparatus for wireless communication

Abstract

Methods and apparatus for wireless communication are disclosed. A user equipment (UE) transmits UE capability information to a base station corresponding to a maximum number of configured pathloss reference signals and / or a maximum number of activated pathloss reference signals. The base station then configures the UE with configured pathloss reference signals having a number less than or equal to a maximum number of configured pathloss reference signals, and / or activates pathloss reference signals having a number less than or equal to a maximum number of activated pathloss reference signals based on the UE capability information.

Description

[0001] This divisional patent application is a divisional application of the patent application with international application number PCT / US2020 / 060611, international filing date of November 13, 2020, China national phase application number 202080079324.2, and title "UE Capability Reporting for Configured and Activated Pathloss Reference Signals".

[0002] Cross - Reference to Related Applications

[0003] This application claims the benefit of U.S. Provisional Application No. 62 / 938,131, entitled "UE Capability Reporting for Configured and Activated Pathloss Reference Signals", filed on November 20, 2019, and U.S. Patent Application No. 17 / 096,844, entitled "UE Capability Reporting for Configured and Activated Pathloss Reference Signals", filed on November 12, 2020, the entire contents of which are hereby incorporated by reference. Technical Field

[0004] This disclosure generally relates to communication systems, and more particularly to wireless communication including pathloss reference signals, and specifically to methods and apparatuses for wireless communication. Background Art

[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple access techniques that are capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access techniques include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single - Carrier Frequency Division Multiple Access (SC - FDMA) systems, and Time Division - Synchronous Code Division Multiple Access (TD - SCDMA) systems.

[0006] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the urban, national, regional, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvement in 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunication standards that employ these technologies. SUMMARY OF THE DISCLOSURE

[0007] A brief overview of one or more aspects is given below to provide a basic understanding of such aspects. This overview is not an exhaustive survey of all contemplated aspects, and is neither intended to identify key or critical elements of all aspects nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0008] A set of path loss reference signals can be configured for a user equipment (UE). Subsequently, a path loss reference signal from the configured set of path loss reference signals can be activated for the UE for performing power control. The UE can perform layer 3 (L3) filtering on the activated path loss reference signals one by one to determine a more stable path loss value for uplink power control. Aspects of the present disclosure improve the configuration and activation of path loss reference signals by the UE reporting its ability regarding the maximum number of configured path loss reference signals and / or the maximum number of activated path loss reference signals.

[0009] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a UE are provided. The apparatus transmits UE capability information corresponding to at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals to a base station. Subsequently, the UE receives a configuration regarding at least one of the configured path loss reference signals or the activated path loss reference signals from the base station based on the UE capability information.

[0010] In one aspect of the present disclosure, a method, a computer-readable medium, and a device for wireless communication at a base station are provided. The device receives UE capability information from a UE regarding at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals. Subsequently, the base station configures the UE based on the UE capability information regarding at least one of a third number of configured path loss reference signals or a fourth number of activated path loss reference signals.

[0011] To achieve the foregoing and related purposes, one or more aspects include the features that are fully described hereinafter and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of one or more aspects. However, these features are merely indicative of the various ways in which the principles of the various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0013] Figure 2A is a diagram illustrating an example of a first frame in accordance with various aspects of the present disclosure.

[0014] Figure 2B is a diagram illustrating an example of DL channels within a subframe in accordance with various aspects of the present disclosure.

[0015] Figure 2C is a diagram illustrating an example of a second frame in accordance with various aspects of the present disclosure.

[0016] Figure 2D is a diagram illustrating an example of UL channels within a subframe in accordance with various aspects of the present disclosure.

[0017] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0018] Figure 4 illustrates an example communication flow between a UE and a base station including UE capability signaling regarding path loss reference signals.

[0019] Figure 5 is a flowchart of a wireless communication method.

[0020] Figure 6 is a conceptual data flow diagram illustrating the data flow between different devices / components in an example device.

[0021] Figure 7 is a diagram illustrating an example of the hardware implementation of an example device.

[0022] Figure 8 It is a flowchart of a wireless communication method.

[0023] Figure 9 It is a conceptual data flow diagram explaining the data flow between different devices / components in an example device.

[0024] Figure 10 It is a diagram showing an example of the hardware implementation of an example device. Detailed Description

[0025] The following detailed description presented in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0026] A set of path loss reference signals may be configured for a user equipment (UE). Subsequently, a path loss reference signal from the configured set of path loss reference signals may be activated for the UE to perform power control. The UE may perform layer 3 (L3) filtering on the activated path loss reference signals one by one to determine a more stable path loss value for uplink power control. Aspects of the present disclosure improve the configuration and activation of path loss reference signals by the UE reporting its ability regarding the maximum number of configured path loss reference signals and / or the maximum number of activated path loss reference signals.

[0027] Certain aspects of a telecommunications system will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0028] As an example, an element, or any portion of an element, or any combination of elements can be implemented as a "processing system" that includes one or more processors. Examples of processors include: microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system on a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to in software, firmware, middleware, microcode, hardware description language, or otherwise.

[0029] Accordingly, in one or more example embodiments, the described functions can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include random access memory (RAM), read only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other media that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0030] Figure 1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes base stations 102, UEs 104, evolved packet core (EPC) 160, and another core network 190 (e.g., 5G core (5GC)). The base stations 102 can include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0031] Base stations 102 configured for 4G LTE (collectively referred to as the evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a first backhaul link 132 (e.g., the S1 interface). Base stations 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. In addition to other functions, the base stations 102 can also perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of Non-Access Stratum (NAS) messages, NAS node selection, synchronization, Radio Access Network (RAN) sharing, Multimedia Broadcast Multicast Service (MBMS), subscriber and equipment tracing, Radio Access Network Information Management (RIM), paging, positioning, and delivery of alert messages. The base stations 102 can communicate with each other directly or indirectly (e.g., via the EPC 160 or the core network 190) on a third backhaul link 134 (e.g., the X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0032] Base station 102 can communicate wirelessly with UE 104. Each base station 102 can provide communication coverage for its respective geographical coverage area 110. There may be overlapping geographical coverage areas 110. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which can serve a restricted group called a closed subscriber group (CSG). The communication link 120 between the base station 102 and the UE 104 can include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 can use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links can be through one or more carriers. For each carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 can use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers can be asymmetric with respect to the DL and UL (e.g., more or fewer carriers may be allocated to the DL compared to the UL). The component carriers can include a primary component carrier and one or more secondary component carriers. The primary component carrier can be referred to as the primary cell (PCell), and the secondary component carriers can be referred to as secondary cells (SCells).

[0033] Some UEs 104 can communicate with each other using device-to-device (D2D) communication links 158. The D2D communication links 158 can use DL / UL WWAN spectrum. The D2D communication links 158 can use one or more sidelink channels, such as the physical sidelink broadcast channel (PSBCH), the physical sidelink discovery channel (PSDCH), the physical sidelink shared channel (PSSCH), and the physical sidelink control channel (PSCCH). D2D communication can be through various wireless D2D communication systems, such as, by way of example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0034] The wireless communication system may further include, for example, a Wi-Fi access point (AP) 150 in communication with a Wi-Fi station (STA) 152 via a communication link 154 in, e.g., the 5 GHz unlicensed spectrum, etc. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communication to determine whether the channel is available.

[0035] The small cell 102' may operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' may adopt NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as that used by the Wi-Fi AP 150. The small cell 102' adopting NR in the unlicensed spectrum may boost the coverage of the access network and / or increase the capacity of the access network.

[0036] The electromagnetic spectrum is generally subdivided into various classes, frequency bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating frequency bands have been identified as frequency range designations FR1 (410 MHz – 7.125 GHz) and FR2 (24.25 GHz – 52.6 GHz). The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Although a part of FR1 is greater than 6 GHz, in various documents and articles, FR1 is generally (interchangeably) referred to as the "sub-6 GHz band". Similar naming issues sometimes occur with respect to FR2. Although different from the extremely high frequency (EHF) band (30 GHz – 300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band, FR2 is generally (interchangeably) referred to as the "millimeter wave" band in various documents and articles.

[0037] Taking the above aspects into account, unless otherwise specifically stated, it should be understood that if used herein, terms such as sub-"6 GHz" etc. may generally represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if used herein, terms such as "millimeter wave" etc. may generally represent frequencies that may include mid-band frequencies, may be within FR2, or may be within the EHF band.

[0038] Whether it is a small cell 102' or a large cell (e.g., a macro base station), the base station 102 may include and / or be referred to as an eNB, a g Node B (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in the traditional sub-6 GHz spectrum, at millimeter wave frequencies, and / or near millimeter wave frequencies to communicate with the UE 104. When the gNB 180 operates at millimeter wave frequencies or near millimeter wave frequencies, the gNB 180 may be referred to as a millimeter wave base station. The millimeter wave base station 180 may utilize beamforming 182 with the UE 104 to compensate for path loss and short range. The base station 180 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming.

[0039] The base station 180 may transmit a beamformed signal to the UE 104 in one or more transmission directions 182'. The UE 104 may receive the beamformed signal from the base station 180 in one or more reception directions 182". The UE 104 may also transmit a beamformed signal to the base station 180 in one or more transmission directions. The base station 180 may receive the beamformed signal from the UE 104 in one or more reception directions. The base station 180 / UE 104 may perform beam training to determine the optimal reception direction and transmission direction for each of the base station 180 / UE 104. The transmission direction and reception direction of the base station 180 may be the same or may be different. The transmission direction and reception direction of the UE 104 may be the same or may be different.

[0040] The EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may communicate with a Home Subscriber Server (HSS) 174. The MME 162 is a control node that processes signaling between the UE 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All User Internet Protocol (IP) packets are routed through the Serving Gateway 166, which is itself connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functions for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area for a particular broadcast service, and may be responsible for session management (start / stop) and for collecting eMBMS-related charging information.

[0041] The core network 190 may include an Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195. The AMF 192 may communicate with a Unified Data Management (UDM) 196. The AMF 192 is a control node that processes signaling between the UE 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All User Internet Protocol (IP) packets are routed through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to IP services 197. The IP services 197 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) Streaming (PSS) service, and / or other IP services.

[0042] The base station may include and / or be referred to as a gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmission reception point (TRP), or some other suitable term. The base station 102 provides an access point for the UE 104 to the EPC 160 or the core network 190. Examples of the UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop devices, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, gas pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, fuel pumps, ovens, vehicles, heart monitors, etc.). The UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

[0043] Referring again to Figure 1 , in some aspects, the UE 104 may include a path loss reference signal capability component 198 configured to transmit UE capability information corresponding to the maximum number of configured path loss reference signals and / or the maximum number of activated path loss reference signals to the base station 102 / 180. The base station 102 / 180 may include a path loss reference signal configuration component 199 configured to receive the UE capability information from the UE 104 and configure the UE 104 based on the UE capability regarding the number of configured path loss reference signals and / or the number of activated path loss reference signals. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0044] Figure 2A FIG. 200 is an illustration showing an example of a first subframe within the 5G NR frame structure. Figure 2B FIG. 230 is an illustration showing an example of a DL channel within a 5G NR subframe. Figure 2C FIG. 250 is an illustration showing an example of a second subframe within the 5G NR frame structure. Figure 2DFIG. 280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure can be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to DL or UL; or it can be time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to both DL and UL. In the example provided by Figure 2A , 2C , the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL) and subframe 3 is configured with slot format 1 (all UL), where D is DL, U is UL, and F is for flexible use between DL / UL. Although subframes 3 and 4 are shown as having slot formats 1 and 28 respectively, any particular subframe can be configured with any one of the various available slot formats 0 - 61. Slot formats 0 and 1 are all DL and all UL respectively. The other slot formats 2 - 61 include a mixture of DL, UL, and flexible symbols. The UE is configured with a slot format (dynamically configured via downlink control information (DCI), or semi-statically / statically configured via radio resource control (RRC) signaling) via the received slot format indicator (SFI). Note that the following description also applies to a 5G NR frame structure that is TDD.

[0045] Other wireless communication technologies may have different frame structures and / or different channels. One frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. A subframe may also include mini-slots, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the slot configuration. For slot configuration 0, each time slot may include 14 symbols, while for slot configuration 1, each time slot may include 7 symbols. The symbols on the DL can be cyclic prefix (CP) orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on the UL can be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the slot configuration and numerology. For slot configuration 0, different numerologies μ0 to 4 allow 1, 2, 4, 8, and 16 time slots per subframe respectively. For slot configuration 1, different numerologies 0 to 2 allow 2, 4, and 8 time slots per subframe respectively. Accordingly, for slot configuration 0 and numerology μ, there are 14 symbols per time slot and 2 μ time slots per subframe. The subcarrier spacing and symbol length / duration are dependent on the numerology. The subcarrier spacing can be equal to 2 μ*15 kHz, where μ is a parameter design from 0 to 4. Thus, the parameter design μ = 0 has a subcarrier spacing of 15 kHz, while the parameter design μ = 4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A - 2D An example of a slot configuration 0 with 14 symbols per time slot and a parameter design μ = 2 with 4 time slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency division multiplexed (see Figure 2B ). Each BWP may have a specific parameter design.

[0046] A resource grid can be used to represent the frame structure. Each time slot includes resource blocks (RBs) (also referred to as physical RBs (PRBs)) that extend 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0047] As Figure 2A explained, some REs carry reference (pilot) signals (RSs) for the UE. The RSs can include demodulation RSs (DM-RSs) for channel estimation at the UE (denoted as R for one specific configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RSs). The RSs can also include beam measurement RSs (BRSs), beam refinement RSs (BRRSs), and phase tracking RSs (PT-RSs).

[0048] Figure 2BExamples of various DL channels within a subframe of a demodulation reference signal (DM-RS). The physical downlink control channel (PDCCH) carries downlink control information (DCI) within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including 6 resource element groups (REGs), each REG including 12 consecutive resource elements (REs) in the OFDM symbols of a resource block (RB). The PDCCH within a bandwidth part (BWP) may be referred to as a control resource set (CORESET). The user equipment (UE) is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring occasion on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies across the channel bandwidth. The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is used by the UE 104 to determine subframe / symbol timing and the physical layer identity. The secondary synchronization signal (SSS) may be in symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE may determine the physical cell identifier (PCI). Based on the PCI, the UE may determine the location of the aforementioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) may be logically grouped with the PSS and the SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of resource blocks in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as system information blocks (SIBs)), and paging messages.

[0049] As explained in Figure 2C Some resource elements carry DM-RS for channel estimation at the base station (denoted as R for a particular configuration, but other DM-RS configurations are possible). The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS may be transmitted in the previous or the previous two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether a short PUCCH or a long PUCCH is transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS). The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and the UE may transmit the SRS on one of the combs. The SRS may be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0050] Figure 2DExamples of various UL channels within a subframe of a decoded frame. The PUCCH may be located at the position indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgement (HARQ-ACK) information (ACK) / negative ACK (NACK) feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0051] Figure 3 is a block diagram of a base station 310 and a UE 350 in communication in an access network. In the DL, IP packets from the EPC 160 may be provided to the controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes the radio resource control (RRC) layer, and layer 2 includes the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the media access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with the broadcast of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reports; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and re-ordering of RLC data PDUs; and MAC layer functionality associated with the mapping between logical channels and transport channels, multiplexing MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0052] The transmit (TX) processor 316 and the receive (RX) processor 370 implement the layer 1 functionality associated with various signal processing functions. Layer 1, which includes the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 disposes of the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to OFDM subcarriers, multiplexed with reference signals (e.g., pilots) in the time and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is space precoded to generate multiple spatial streams. Channel estimates from the channel estimator 374 may be used to determine the coding and modulation schemes and for spatial processing. The channel estimates may be derived from reference signals transmitted by the UE 350 and / or channel status feedback. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX modulates an RF carrier with the respective spatial stream for transmission.

[0053] At the UE 350, each receiver 354RX receives signals via its respective corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement the layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If there are multiple spatial streams destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a fast Fourier transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency-domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, as well as the reference signals, are recovered and demodulated by determining the signal constellation points most likely transmitted by the base station 310. These soft decisions may be based on the channel estimates calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by the base station 310 on the physical channel. These data and control signals are then provided to the controller / processor 359 that implements the layer 3 and layer 2 functionality.

[0054] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0055] Similar to the functionality described in connection with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0056] Channel estimates derived by the channel estimator 358 from reference signals or feedback transmitted by the base station 310 may be used by the TX processor 368 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to a different antenna 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a respective spatial stream for transmission.

[0057] UL transmissions are processed at the base station 310 in a manner similar to that described in connection with the receiver functionality at the UE 350. Each receiver 318RX receives signals via its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0058] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0059] At least one of the TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects associated with Figure 1 198.

[0060] At least one of the TX processor 316, RX processor 370, and controller / processor 375 may be configured to perform aspects associated with Figure 1 199.

[0061] Communication between the base station and the UE may require adaptation to changes in the radio channel. One adaptation may include power control. For example, the UE may adjust its transmit power based on the channel quality. Power control may be applied by the base station for downlink transmissions and by the UE for uplink transmissions. As an example, if there is good channel quality, the UE may use a lower transmit power, which may reduce interference caused by uplink transmissions and lower UE power consumption. Power control may be applied by the UE to determine the transmit power that may help avoid interference and reduce power consumption while also helping to ensure that the uplink transmission can be accurately received by the base station. The UE may increase its uplink transmit power to compensate for increased path loss. The UE may measure a reference signal (such as a path loss reference signal) that the UE receives from the base station. The UE may use this measurement along with other factors to determine the transmit power for uplink transmissions from the UE.

[0062] The base station may configure a path loss reference signal for the UE for use in power control associated with the UE's uplink signal, the UE's uplink channel, etc. For example, the path loss reference signal may be configured for the UE to use in power control for sounding reference signals (SRS), PUSCH, and / or PUCCH.

[0063] The base station can update the path loss reference signal on a per-SRS resource set basis (e.g., in the Medium Access Control - Control Element (MAC-CE)). For example, the base station can use RRC signaling to configure a set of path loss reference signals for the SRS at the UE. Subsequently, the base station can update the path loss reference signal on a per-SRS resource set basis (e.g., in the MAC-CE), with each activated path loss reference signal being from the configured set of path loss reference signals. Thus, updating the path loss reference signal can refer to activating one or more path loss reference signals from the configured set of path loss reference signals. The configured set of path loss reference signals can be referred to as the configured path loss reference signal pool.

[0064] The UE can perform L3 filtering on the activated path loss reference signals one by one. L3 filtering can help the UE determine a more stable path loss value for SRS power control. As an example, L3 filtering can include performing a filtering function on the measurements before using the measurements of the activated path loss reference signals to determine the transmit power for uplink transmission. As a non-limiting example, the UE can apply the formula Fn = (1 – a)*Fn-1 + a*Mn to the L3 filtering of the path loss reference signal measurements. In the example formula, Mn is the last received measurement result from the physical layer, Fn is the updated filtered measurement result for evaluating the reporting criterion or for measurement reporting. Fn-1 is the older filtered measurement result, where when the first measurement result from the physical layer is received, F0 is set to M1; and for the measurement object (e.g., MeasObjectNR), a = 1 / 2(ki / 4), where ki is the filter coefficient (e.g., filterCoefficient) of the quantity corresponding to the i-th QuantityConfigNR in the quantityConfigNR list, and i is indicated by the quantityConfigIndex in MeasObjectNR; for other measurements, a = 1 / 2(k / 4), where k is the filter coefficient of the quantity corresponding to the measurement received by quantityConfig; for UTRA-FDD, a = 1 / 2(k / 4), where k is the filter coefficient of the quantity corresponding to the measurement received by the configured quantity (e.g., quantityConfigUTRA-FDD in QuantityConfig). The UE can adapt the filter such that the time characteristics of the filter remain unchanged at different input rates, e.g., observing that the filter coefficient k assumes a sampling rate equal to X ms. The value of X can be equivalent to the L1 measurement period within a frequency. This value can be a defined value as defined (e.g., assuming non-DRX operation) and can depend on the frequency range.

[0065] The SRS may include an aperiodic SRS (AP-SRS) and / or a semi-persistent SRS (SP-SRS). The base station may transmit a MAC-CE that updates the (one or more) path loss reference signals for the UE's AP-SRS / SP-SRS.

[0066] The UE may be configured with multiple path loss reference signals by RRC signaling from the base station, and one of the configured path loss reference signals may be activated / updated by a MAC-CE for a specific SRS resource set.

[0067] The base station may use a MAC-CE to update the path loss reference signal for each SRS resource indicator (SRI) associated with a PUSCH transmission. For example, the base station may use RRC signaling to configure a set of path loss reference signals for the UE. Subsequently, the base station may activate the path loss reference signals on a per-SRI basis, with each activated path loss reference signal coming from the configured set of path loss reference signals. The UE may perform L3 filtering on the activated path loss reference signals on a per-SRI basis. The L3 filtering may help the UE determine a more stable path loss value for PUSCH power control. Thus, a MAC-CE message from the base station may activate / update the value of the PUSCH path loss reference signal identifier (ID) (which may be referred to, for example, by a parameter such as "PUSCH-PathlossReferenceRS-Id"). The PUSCH path loss reference signal ID may correspond to the SRIPUSCH power control ID (which may be referred to, for example, by a parameter such as "sri-PUSCH-powercontrolId"). The mapping may be given by the SRIPUSCH power control having a link between the SRIPUSCH power control ID and the PUSCH path loss reference signal ID.

[0068] The higher-layer filtered reference signal received power (RSRP) may be used for path loss measurement. The time after the MAC-CE may be provided to the UE to perform the path loss measurement. For example, the filtered RSRP value for a previous path loss reference signal may be used until a specific time, which may be referred to as the application time. For example, the application time may be the next time slot after the fifth measurement sample, where the first measurement sample corresponds to the first instance of the path loss reference signal. The first instance of the path loss reference signal may be, for example, 3 ms after the UE sends an ACK in response to receiving a MAC-CE that activates the path loss reference signal.

[0069] The activation of the configured path loss reference signal via MAC-CE can be applicable to UEs that support more than four RRC-configurable path loss reference signals and can be applicable when the path loss reference signal activated by MAC-CE is not tracked by the UE. In some examples, if more than four path loss reference signals are configured in the RRC signaling from the base station, the UE can track the activated path loss reference signal(s). The UE can determine whether to update the filtered RSRP value for a previous path loss reference signal (e.g., 3 ms after sending an ACK in response to a MAC-CE activating a new path loss reference signal).

[0070] The UE may need memory to store the configured path loss reference signal at the UE. Additionally, the UE may need hardware and / or software resources to perform L3 filtering on the activated path loss reference signal one by one. To provide the configuration / activation of the path loss reference signal within the capabilities of the UE, aspects of the present disclosure include the UE reporting to the base station capability information indicating the maximum number of configured path loss reference signals supported by the UE and / or the maximum number of activated path loss reference signals supported by the UE.

[0071] Figure 4An example communication flow 400 between a UE 402 and a base station 404 is explained. At 401, the UE 402 reports or otherwise indicates information regarding UE capabilities, including the maximum number of configured path loss reference signals supported by the UE 402 and / or the maximum number of active path loss reference signals supported by the UE 402. The UE 402 may indicate the capability information via a PUCCH. The maximum number of active path loss reference signals may be equal to or less than the maximum number of configured path loss reference signals. For example, the maximum number of configured path loss reference signals may have candidate values such as 2, 4, 8, 16, 32, …, 64, 128, etc. The maximum number of active path loss reference signals may have candidate values such as 2, 4, 8, 16, etc., and may not exceed the maximum number of configured path loss reference signals reported as supported by the UE. The UE may provide information regarding UE capabilities based on the memory, hardware, and / or software at the UE 402. For example, UE capabilities may be based on the amount of memory for storing configuration information regarding the configured path loss reference signals. The UE may provide information regarding UE capabilities based on the hardware or software for performing L3 filtering of the active path loss reference signals. The information regarding UE capabilities may be used for power control of one or more uplink signals or uplink channels (such as PUSCH, PUCCH, and / or SRS). For example, the UE capability information sent to the BS may correspond to a particular type of uplink transmission or type of uplink channel. For example, UE capabilities may be used for power control of a single uplink signal or a single uplink channel. Alternatively, the information regarding UE capabilities may be applied to power control for each uplink signal from the UE 402 or for each uplink channel from the UE 402. Thus, rather than the UE providing information regarding UE capabilities for a particular uplink signal or a particular uplink channel, the UE may provide information regarding UE capabilities applied to each uplink signal / channel from the UE (e.g., for power control of each uplink channel / signal).

[0072] At 403, the base station 404 may configure the UE 402 regarding the number of configured path loss reference signals based on the received information regarding UE capabilities. For example, the number may be restricted to not exceed the maximum number of configured path loss reference signals indicated by the UE. Thus, the base station 404 may configure the number of path loss reference signals within the capabilities of the UE 402. The path loss reference signals may be configured via RRC signaling from the base station 404.

[0073] At 405, the base station 404 may activate several path loss reference signals based on information about the UE capabilities. The base station may limit the number of activated path loss reference signals to not exceed the second largest number of activated path loss reference signals from the UE capabilities. Thus, the base station 404 may activate a number of path loss reference signals within the capabilities of the UE 402. The (plural) path loss reference signals may be activated via a MAC-CE from the base station 404.

[0074] As illustrated at 407, the base station 404 may transmit one or more path loss reference signals corresponding to the activated path loss reference signals. The UE 402 may measure the received path loss reference signals, as illustrated at 409. The UE may determine the path loss based on the measurement. The measurement at 409 and / or the determination of the path loss may include L3 filtering for each of the activated path loss reference signals. At 411, the UE may determine the transmit power for uplink transmission based on the path loss determined from the (plural) path loss reference signals 407.

[0075] Subsequently, at 413, the UE 402 may transmit an uplink transmission (such as PUSCH, PUCCH, and / or SRS) using the transmit power determined at 411 based on the path loss from the activated path loss reference signals 407.

[0076] Thus, for a UE that supports dynamic update of path loss reference signals for uplink power control via MAC-CE, the UE may report its capabilities regarding the path loss reference signals. The base station may use the reported UE capabilities to configure / activate the amount of path loss reference signals within the capabilities of the UE.

[0077] Figure 5 FIG. 500 is a flowchart of a wireless communication method. The method may be performed by a UE or a component of the UE (e.g., UE 104, 350, 402; device 602 / 702; cellular baseband processor 704, which may include a memory 360 and may be the entire UE 350 or a component of UE350 (such as TX processor 368, RX processor 356, and / or controller / processor 359)). The method may assist the UE by providing configuration / activation of path loss reference signals within the capabilities of the UE.

[0078] At 502, the UE transmits UE capability information corresponding to the first largest number of configured path loss reference signals and / or the second largest number of activated path loss reference signals to the base station. The transmission may be, for example, by Figure 6by the capability component 608 of the device 602 in []. The maximum number of the activated path loss reference signals may be equal to or less than the maximum number of the configured path loss reference signals. The UE capability information may be based on the memory, hardware, and / or software at the UE. For example, the UE capability information may be based on the amount of memory for storing the configuration information about the configured path loss reference signals. The UE capability information may be based on the hardware or software for performing the L3 filtering of the activated path loss reference signals. The UE capability information about the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals may correspond to the path loss reference signals for the power control of one or more uplink signals or uplink channels (such as PUSCH, PUCCH, and / or SRS) of the UE. For example, as described in connection with 806, 808, and 810, the UE may measure the path loss of the activated path loss reference signals and determine the transmission power for one or more uplink signals or uplink channels based on the measured path loss. For example, the UE capability information may be used for a specific type of uplink transmission or the type of uplink channel. The UE capability may be used for the power control of a single uplink signal or a single uplink channel. Alternatively, the UE capability information may be applied to the power control for each uplink signal from the UE or for each uplink channel from the UE.

[0079] At 504, the UE receives, based on the UE capability information, the configuration of at least one of the configured path loss reference signals and / or the activated path loss reference signals from the base station. This reception may be performed, for example, by Figure 6 the path loss reference signal component 610 of the device 602 in []. The configuration of the path loss reference signals may be received via the RRC signaling from the base station. The activation of the path loss reference signals may be received in the MAC-CE from the base station.

[0080] As explained in 506, the UE can measure the path loss of the activated path loss reference signal configured based on the UE capabilities. For example, the UE capability information provided in 502 regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals can correspond to the path loss reference signal for power control of a single uplink signal or a single uplink channel, and the UE can determine, in 508, the transmit power for a single uplink signal or a single uplink channel based on the path loss of the activated path loss reference signal configured according to the UE capabilities. This measurement can be performed, for example, by the measurement component 612 of device 602 or 702. The single uplink channel can be, for example, PUCCH, PUSCH, or SRS. In another example, the UE capability information regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals can correspond to the path loss reference signal for power control of each uplink signal or each uplink channel from the UE, and in 508, the UE can determine the transmit power for each uplink signal or each uplink channel based on the path loss of the activated path loss reference signal configured according to the UE capabilities.

[0081] As explained in 508, the UE can determine the transmit power for one or more uplink signals or uplink channels based on the path loss. This determination can be performed, for example, by the power control component 614 of device 602 or 702 based on the path loss measurement from the measurement component 612. Subsequently, in 510, the UE can use the transmit power determined in 508 to transmit an uplink transmission. This transmission can be performed, for example, by the transmission component 606 of device 602 or 702 based on the transmit power received from the power control component 614.

[0082] Figure 6 FIG. 600 is a conceptual data flow diagram that illustrates the data flow between different devices / components in exemplary device 602. The device can be a UE or a component of a UE. Device 602 includes a receiving component 604 configured to receive downlink communication from base station 650, and a transmission component 606 configured to transmit uplink communication to base station 650. Device 602 includes a capability component 608 configured to transmit to the base station UE capability information corresponding to at least one of the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals, for example, as described in 502 in connection with Figure 5 The device includes a path loss reference signal component 610 configured to receive, from the base station, a configuration regarding the configured path loss reference signal or the activated path loss reference signal based on the UE capability information, for example, as described in connection with Figure 5as described in 504. The apparatus may include a measurement component 612 configured to perform measurements of the activated path loss reference signal(s), e.g., to determine the path loss between the UE and the base station. The apparatus may include a power control component 614 configured to perform power control for uplink transmission based on the path loss.

[0083] The apparatus may include additional components that perform each block of the algorithm in the Figure 5 foregoing flowchart. Thus, Figure 5 each block in the foregoing flowchart may be performed by a component and the apparatus may include one or more of those components. These components may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0084] Figure 7 FIG. 702 is a diagram illustrating an example of a hardware implementation of apparatus 700. The apparatus 702 is a UE and includes a cellular baseband processor 704 (also referred to as a modem) coupled to a cellular RF transceiver 722 and one or more subscriber identity module (SIM) cards 720, an application processor 706 coupled to a secure digital (SD) card 708 and a screen 710, a Bluetooth module 712, a wireless local area network (WLAN) module 714, a global positioning system (GPS) module 716, and a power supply 718. The cellular baseband processor 704 communicates with the UE 104 and / or the BS 102 / 180 via the cellular RF transceiver 722. The cellular baseband processor 704 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 704 is responsible for general processing, including execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 704, causes the cellular baseband processor 704 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 704 when executing the software. The cellular baseband processor 704 further includes a receiving component 730, a communication manager 732, and a transmission component 734. The communication manager 732 includes one or more of the illustrated components. The components within the communication manager 732 may be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 704. The cellular baseband processor 704 may be a component of the UE 350 and may include a memory 360 and / or at least one of the following: a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the apparatus 702 may be a modem chip and include only the baseband processor 704, and in another configuration, the apparatus 702 may be the entire UE (e.g., see Figure 3of 350) and includes additional modules of the device 702.

[0085] The communication manager 732 includes a capabilities component 608 configured to transmit to a base station UE capabilities regarding at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals, e.g., as described in Figure 5 502 of. The communication manager 732 further includes a path loss reference signal component 610 configured to receive from the base station 650 a configuration regarding at least one of the configured path loss reference signals or the activated path loss reference signals based on the UE capabilities, e.g., as described in Figure 5 504 of. The communication manager 732 further includes a measurement component 612 configured to perform measurements of the activated path loss reference signal(s), e.g., to determine the path loss between the UE and the base station. The communication manager 732 further includes a power control component 614 configured to perform power control for uplink transmission based on the path loss.

[0086] The device may include additional components that execute each block of the algorithm in the Figure 5 foregoing flowcharts. Thus, Figure 5 each block in the foregoing flowcharts may be executed by a component and the device may include one or more of these components. These components may be one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0087] In one configuration, the device 602 / 702, particularly the cellular baseband processor 704, includes means for transmitting to a base station UE capabilities regarding at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals. The device includes means for receiving from the base station a configuration regarding at least one of the configured path loss reference signals or the activated path loss reference signals based on the UE capabilities. The device may further include means for performing power control for uplink transmission based on the (one or more) path loss reference signals. The device may further include means for measuring the activated (one or more) path loss reference signals. The device may further include means for transmitting an uplink transmission using a transmit power based on a path loss determined from the path loss reference signal. The foregoing means may be one or more of the foregoing components in device 702 configured to perform the functions recited by the foregoing means. As described above, device 702 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the foregoing means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the foregoing means.

[0088] Figure 8 is a flowchart 800 of a wireless communication method. The method may be performed by a base station or a component of a base station (e.g., base stations 102, 180, 310, 404; device 902 / 1002; baseband unit 1004, which may include a memory 376 and which may be the entire base station 310 or a component of base station 310 (such as a TX processor 316, an RX processor 370, and / or a controller / processor 375)). The method may assist the base station in configuring the UE regarding path loss reference signals and / or activating path loss reference signals within the capabilities of the UE.

[0089] At 802, the base station receives from the UE UE capability information regarding a first maximum number of configured path loss reference signals and / or a second maximum number of activated path loss reference signals. The reception may be performed, for example, by Figure 9 the capabilities component 908 of device 902 in. The second maximum number of activated path loss reference signals may be equal to or less than the first maximum number of configured path loss reference signals. The UE capability information regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals may correspond to path loss reference signals for power control of one or more uplink signals or uplink channels (such as PUSCH, PUCCH, and / or SRS) of the UE.

[0090] For example, UE capability information can be used for a specific type of uplink transmission or a type of uplink channel. The UE capability information can be used for a path loss reference signal for which the UE is used to perform power control for a single uplink signal or a single uplink channel. Alternatively, the UE capability information can be applied to power control for each uplink signal from the UE or for each uplink channel from the UE.

[0091] At 804, the base station configures the UE based on the UE capability information regarding a third number of configured path loss reference signals or a fourth number of activated path loss reference signals. This configuration can be performed, for example, by the configuration component 910 of the device 902 in Figure 9 . For example, UE capability information regarding a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals can correspond to a path loss reference signal for which the UE is used for power control for one or more uplink signals or uplink channels, and at 804, the base station can provide the UE with a power control configuration including at least one of the third number of configured path loss reference signals or the fourth number of activated path loss reference signals based on the UE capability. As another example, UE capability information regarding a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals can correspond to a path loss reference signal for which the UE is used for power control for a single uplink signal or a single uplink channel, and at 804, the base station can provide the UE with a power control configuration for a single uplink signal or a single uplink channel including at least one of the third number of configured path loss reference signals or the fourth number of activated path loss reference signals based on the UE capability information. A single uplink channel can be, for example, PUSCH, PUCCH, or SRS.

[0092] The UE capability information can include a first maximum number of configured path loss reference signals, and the base station can limit the third number of configured path loss reference signals to not exceed the first maximum number of configured path loss reference signals from the UE capability. The UE capability information can include a second maximum number of activated path loss reference signals, and the base station can limit the fourth number of activated path loss reference signals to not exceed the second maximum number of activated path loss reference signals from the UE capability information. The path loss reference signal(s) can be configured via RRC signaling from the base station. The path loss reference signal(s) can be activated via MAC-CE from the base station.

[0093] Figure 9FIG. 900 is a conceptual data flow diagram that illustrates the data flow between different devices / components in example device 902. The device can be a base station or a component of a base station. The device includes a receiving component 904 configured to receive uplink communications from UE 950, and a transmitting component 906 configured to transmit downlink communications to UE 950. The device includes a capabilities component 908 configured to receive UE capabilities information from the UE corresponding to a first maximum number of configured path loss reference signals and / or a second maximum number of activated path loss reference signals, e.g., as described in 802 in conjunction with Figure 8 as described in 802 in conjunction with Figure 8 as described in 804.

[0094] The device may include additional components that perform each block of the algorithms in the foregoing flowcharts of Figure 8 Accordingly, Figure 8 each block in the foregoing flowcharts of

[0095] Figure 10 FIG. 1002 is a diagram illustrating an example of a hardware implementation of device 1000. Device 1002 is a BS and includes a baseband unit 1004. The baseband unit 1004 can communicate with UE 104 via a cellular RF transceiver 1022. The baseband unit 1004 may include a computer-readable medium / memory. The baseband unit 1004 is responsible for general processing, including execution of software stored on the computer-readable medium / memory. The software, when executed by the baseband unit 1004, causes the baseband unit 1004 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the baseband unit 1004 when executing the software. The baseband unit 1004 further includes a receiving component 1030, a communications manager 1032, and a transmitting component 1034. The communications manager 1032 includes one or more of the illustrated components. The components within the communications manager 1032 may be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 1004. The baseband unit 1004 may be a component of BS 310 and may include a memory 376 and / or at least one of the following: a TX processor 316, an RX processor 370, and a controller / processor 375.

[0096] The communication manager 1032 includes a capabilities component 908 configured to receive UE capabilities from a UE regarding a first maximum number of configured path loss reference signals and / or a second maximum number of activated path loss reference signals, e.g., as described in 802 in conjunction with Figure 8 The communication manager 1032 further includes a configuration component 910 configured to configure the UE based on at least one of a third number of configured path loss reference signals and / or a fourth number of activated path loss reference signals regarding the UE capabilities, e.g., as described in 804 in conjunction with Figure 8 The device may include additional components that perform each block of the algorithms in the foregoing flowcharts of

[0097] Each block of the algorithms in the foregoing flowcharts of Figure 8 Thus, each block in the foregoing flowcharts of Figure 8 may be performed by a component, and the device may include one or more of these components. These components may be one or more hardware components specifically configured to perform the processes / algorithms, implemented by a processor configured to perform the processes / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0098] In one configuration, the device 902 / 1002, particularly the baseband unit 1004, includes means for receiving UE capabilities from a UE regarding a first maximum number of configured path loss reference signals and / or a second maximum number of activated path loss reference signals. The device may include means for configuring the UE based on at least one of a third number of configured path loss reference signals and / or a fourth number of activated path loss reference signals regarding the UE capabilities information. The foregoing means may be one or more of the foregoing components in the device 1002 configured to perform the functions recited by the foregoing means. As described above, the device 1002 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the foregoing means may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions recited by the foregoing means.

[0099] It should be understood that the specific order or hierarchy of the various blocks in the disclosed processes / flowcharts is illustrative of example approaches. It should be understood that based on design preferences, the specific order or hierarchy of these blocks in the processes / flowcharts may be rearranged. Additionally, some blocks may be combined or omitted. The appended method claims present the elements of the various blocks in exemplary order and are not meant to be limited to the specific order or hierarchy presented.

[0100] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein but are to be accorded the full scope consistent with the language of the claims, where the singular forms of elements are not intended to mean "one and only one" unless specifically stated otherwise but rather "one or more." The phrase "exemplary" as used herein means "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or superior to other aspects. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or thereof" include any combination of A, B, and / or C and may include multiple As, multiple Bs, or multiple Cs. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or thereof" can be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination can include one or more members of A, B, or C. Elements of the various aspects described throughout this disclosure that are presently known or later come to be known to those of ordinary skill in the art as structural and functional equivalents are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public, whether or not such disclosure is expressly recited in the claims. The terms "module," "mechanism," "element," "device," etc. are not intended to be substitutes for the term "apparatus." Thus, no claim element should be construed as apparatus plus function unless the element is expressly recited using the phrase "means for...".

[0101] The following examples are illustrative only and may be combined with other aspects or teachings described herein without limitation.

[0102] Aspect 1 is a method for wireless communication at a user equipment (UE), comprising: transmitting, to a base station, UE capability information corresponding to at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals; and receiving, from the base station, a configuration for at least one of the configured path loss reference signals or the activated path loss reference signals based on the UE capability.

[0103] In aspect 2, the method as in aspect 1 further includes: the UE capability information includes a first maximum number of configured path loss reference signals.

[0104] In aspect 3, the method as in aspect 1 further includes: the UE capability information includes a second maximum number of activated path loss reference signals.

[0105] In aspect 4, the method as in aspect 1 further includes: the UE capability information includes a first maximum number of configured path loss reference signals and a second maximum number of activated path loss reference signals.

[0106] In aspect 5, the method as in any one of aspects 1 - 4 further includes that the second maximum number of activated path loss reference signals is equal to or less than the first maximum number of configured path loss reference signals.

[0107] In aspect 6, the method as in any one of aspects 1 - 5 further includes: the UE capability information regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals corresponds to the path loss reference signals for power control of one or more uplink signals or uplink channels of the UE, and the method further includes: measuring the path loss of the activated path loss reference signals configured based on the UE capabilities; and determining the transmit power for one or more uplink signals or uplink channels based on the path loss.

[0108] In aspect 7, the method as in aspect 6 further includes: the UE capability information regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals corresponds to the path loss reference signals for power control of a single uplink signal or a single uplink channel of the UE, and wherein the UE determines the transmit power for the single uplink signal or the single uplink channel based on the path loss of the activated path loss reference signals configured according to the UE capabilities.

[0109] In aspect 8, the method as in aspect 7 further includes: the single uplink channel includes one of PUSCH, PUCCH, or SRS.

[0110] In aspect 9, the method as in aspect 6 further includes: the UE capability information regarding the first maximum number of configured path loss reference signals or the second maximum number of activated path loss reference signals corresponds to the path loss reference signals for power control of each uplink signal or each uplink channel from the UE, and wherein the UE determines the transmit power for each uplink signal or each uplink channel based on the path loss of the activated path loss reference signals configured according to the UE capabilities.

[0111] Aspect 10 is a device for wireless communication, comprising: at least one processor, the at least one processor being coupled to a memory and configured to implement the method of any one of Aspects 1 to 9.

[0112] Aspect 11 is a device for wireless communication, comprising means for implementing the method of any one of Aspects 1 to 9.

[0113] Aspect 12 is a non-transitory computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method of any one of Aspects 1 to 9.

[0114] Aspect 13 is a method for wireless communication at a base station, comprising: receiving, from a UE, UE capability information corresponding to at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals; and configuring the UE based on the UE capability with respect to at least one of a third number of configured path loss reference signals or a fourth number of activated path loss reference signals.

[0115] In Aspect 14, the method of Aspect 13 further comprises: the UE capability information includes a first maximum number of configured path loss reference signals, and wherein the base station limits the third number of configured path loss reference signals to not exceed the first maximum number of configured path loss reference signals from the UE capability.

[0116] In Aspect 15, the method of Aspect 13 further comprises: the UE capability information includes a second maximum number of activated path loss reference signals, and wherein the base station limits the fourth number of activated path loss reference signals to not exceed the second maximum number of activated path loss reference signals from the UE capability.

[0117] In Aspect 15, the method of Aspect 13 further comprises: the UE capability information includes a first maximum number of configured path loss reference signals and a second maximum number of activated path loss reference signals, wherein the base station limits the third number of configured path loss reference signals to not exceed the first maximum number of configured path loss reference signals from the UE capability, and the base station limits the fourth number of activated path loss reference signals to not exceed the second maximum number of activated path loss reference signals from the UE capability.

[0118] In Aspect 17, the method of any one of Aspects 13 - 16 further comprises the second maximum number of activated path loss reference signals being equal to or less than the first maximum number of configured path loss reference signals.

[0119] In aspect 18, the method as in any one of aspects 13 - 17 further includes that UE capability information regarding a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals corresponds to path loss reference signals for power control of one or more uplink signals or uplink channels of the UE, and wherein the base station provides, based on the UE capability, a power control configuration to the UE including at least one of a third number of configured path loss reference signals or a fourth number of activated path loss reference signals.

[0120] In aspect 19, the method as in aspect 18 further includes that UE capability information regarding a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals corresponds to path loss reference signals for power control of a single uplink signal or a single uplink channel of the UE, and wherein the base station provides, based on the UE capability, a power control configuration for the single uplink signal or the single uplink channel to the UE including at least one of a third number of configured path loss reference signals or a fourth number of activated path loss reference signals.

[0121] In aspect 20, the method as in aspect 19 further includes: the single uplink channel includes one of PUSCH, PUCCH, or SRS.

[0122] In aspect 21, the method as in aspect 18 further includes that UE capability information regarding a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals corresponds to path loss reference signals for power control of each uplink signal or each uplink channel from the UE, and wherein the base station provides, based on the UE capability, a power control configuration for each uplink signal or each uplink channel to the UE including at least one of a third number of configured path loss reference signals or a fourth number of activated path loss reference signals.

[0123] Aspect 22 is an apparatus for wireless communication, including: at least one processor coupled to a memory and configured to implement the method as in any one of aspects 13 to 21.

[0124] Aspect 23 is a device for wireless communication, including means for implementing the method as in any one of aspects 13 to 21.

[0125] Aspect 24 is a computer - readable medium storing computer - executable code, wherein the code, when executed by a processor, causes the processor to implement the method as in any one of aspects 13 to 21.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to: transmit UE capability information corresponding to at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals to a network node; and receive a configuration of at least one of the configured path loss reference signals or the activated path loss reference signals from the network node based on the UE capability information.

2. The apparatus according to claim 1, wherein the UE capability information includes the first maximum number of the configured path loss reference signals.

3. The apparatus according to claim 1, wherein the UE capability information includes the second maximum number of the activated path loss reference signals.

4. The apparatus according to claim 1, wherein the UE capability information includes the first maximum number of the configured path loss reference signals and the second maximum number of the activated path loss reference signals.

5. The apparatus according to claim 4, wherein the second maximum number of the activated path loss reference signals is equal to or less than the first maximum number of the configured path loss reference signals.

6. The apparatus according to claim 1, wherein the UE capability information corresponding to the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to path loss reference signals for power control of one or more uplink signals or uplink channels of the UE, and the at least one processor is further configured to: measure a path loss of the activated path loss reference signals configured based on the UE capability information; and determine a transmission power for the one or more uplink signals or uplink channels based on the path loss.

7. The apparatus according to claim 6, wherein the UE capability information corresponding to the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals for power control of a single uplink signal or a single uplink channel of the UE, and wherein the apparatus determines a transmission power for the single uplink signal or the single uplink channel based on a path loss of the activated path loss reference signals configured according to the UE capability information.

8. The apparatus according to claim 7, wherein the single uplink channel includes at least one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a sounding reference signal (SRS).

9. The apparatus according to claim 7, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of each uplink signal or each uplink channel from the UE, and wherein the apparatus determines the transmission power for each uplink signal or each uplink channel based on the path loss of the activated path loss reference signals configured according to the UE capability information.

10. An apparatus for wireless communication at a network node, comprising: a memory; and at least one processor coupled to the memory and configured to: receive, from a user equipment (UE), UE capability information corresponding to at least one of a first maximum number of the configured path loss reference signals or a second maximum number of the activated path loss reference signals; and configure the UE based on the UE capability information regarding at least one of a third number of the configured path loss reference signals or a fourth number of the activated path loss reference signals.

11. The apparatus according to claim 10, wherein the UE capability information includes the first maximum number of the configured path loss reference signals.

12. The apparatus according to claim 10, wherein the UE capability information includes the second maximum number of the activated path loss reference signals.

13. The apparatus according to claim 10, wherein the UE capability information includes the first maximum number of the configured path loss reference signals and the second maximum number of the activated path loss reference signals, wherein the apparatus limits the third number of the configured path loss reference signals to not exceed the first maximum number of the configured path loss reference signals from the UE capability information, and wherein the apparatus limits the fourth number of the activated path loss reference signals to not exceed the second maximum number of the activated path loss reference signals from the UE capability information.

14. The apparatus according to claim 13, wherein the second maximum number of the activated path loss reference signals is equal to or less than the first maximum number of the configured path loss reference signals.

15. The apparatus according to claim 10, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of one or more uplink signals or uplink channels, and wherein the apparatus provides, to the UE, a power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals based on the UE capability information.

16. The apparatus according to claim 15, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals for power control of a single uplink signal or a single uplink channel of the UE, and wherein the apparatus provides, based on the UE capability information, a power control configuration for the single uplink signal or the single uplink channel, the power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals.

17. The apparatus according to claim 16, wherein the single uplink channel is one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a sounding reference signal (SRS).

18. The apparatus according to claim 15, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals for power control of each uplink signal or each uplink channel from the UE, and wherein the apparatus provides, based on the UE capability information, a power control configuration for each uplink signal or each uplink channel, the power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals.

19. A method for wireless communication at a user equipment (UE), comprising: transmitting, to a network node, UE capability information corresponding to at least one of a first maximum number of configured path loss reference signals or a second maximum number of activated path loss reference signals; and receiving, based on the UE capability information, a configuration regarding at least one of the configured path loss reference signals or the activated path loss reference signals from the network node.

20. The method according to claim 19, wherein the UE capability information includes the first maximum number of the configured path loss reference signals.

21. The method according to claim 19, wherein the UE capability information includes the second maximum number of the activated path loss reference signals.

22. The method according to claim 19, wherein the UE capability information includes the first maximum number of the configured path loss reference signals and the second maximum number of the activated path loss reference signals.

23. The method according to claim 11, wherein the second maximum number of the activated path loss reference signals is equal to or less than the first maximum number of the configured path loss reference signals.

24. The method according to claim 19, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of one or more uplink signals or uplink channels, and the method further comprises: measuring the path loss of the activated path loss reference signals configured based on the UE capability information; and determining the transmission power for the one or more uplink signals or uplink channels based on the path loss.

25. The method according to claim 24, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of a single uplink signal or a single uplink channel, and wherein the UE determines the transmission power for the single uplink signal or the single uplink channel based on the path loss of the activated path loss reference signals configured according to the UE capability information.

26. The method according to claim 25, wherein the single uplink channel comprises at least one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a sounding reference signal (SRS).

27. The method according to claim 25, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of each uplink signal or each uplink channel from the UE, and wherein the UE determines the transmission power for each uplink signal or each uplink channel based on the path loss of the activated path loss reference signals configured according to the UE capability information.

28. A method for wireless communication at a network node, comprising: receiving, from a user equipment (UE), UE capability information corresponding to at least one of a first maximum number of the configured path loss reference signals or a second maximum number of the activated path loss reference signals; and configuring the UE based on the UE capability information regarding a third number of the configured path loss reference signals or a fourth number of the activated path loss reference signals.

29. The method according to claim 28, wherein the UE capability information comprises the first maximum number of the configured path loss reference signals, and wherein the network node limits the third number of the configured path loss reference signals to not exceed the first maximum number of the configured path loss reference signals from the UE capability information.

30. The method according to claim 28, wherein the UE capability information includes the second maximum number of the activated path loss reference signals, and wherein the network node limits the fourth number of the activated path loss reference signals to not exceed the second maximum number of the activated path loss reference signals from the UE capability information.

31. The method according to claim 28, wherein the UE capability information includes the first maximum number of the configured path loss reference signals and the second maximum number of the activated path loss reference signals, wherein the network node limits the third number of the configured path loss reference signals to not exceed the first maximum number of the configured path loss reference signals from the UE capability information, and wherein the network node limits the fourth number of the activated path loss reference signals to not exceed the second maximum number of the activated path loss reference signals from the UE capability information.

32. The method according to claim 31, wherein the second maximum number of the activated path loss reference signals is equal to or less than the first maximum number of the configured path loss reference signals.

33. The method according to claim 28, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals for power control of one or more uplink signals or uplink channels of the UE, and wherein the network node provides a power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals to the UE based on the UE capability information.

34. The method according to claim 33, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals for power control of a single uplink signal or a single uplink channel of the UE, and wherein the network node provides a power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals for the single uplink signal or the single uplink channel to the UE based on the UE capability information.

35. The method according to claim 34, wherein the single uplink channel is one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or a sounding reference signal SRS.

36. The method according to claim 33, wherein the UE capability information regarding the first maximum number of the configured path loss reference signals or the second maximum number of the activated path loss reference signals corresponds to the path loss reference signals used by the UE for power control of each uplink signal or each uplink channel, and wherein the network node provides, based on the UE capability information, a power control configuration for each uplink signal or each uplink channel, the power control configuration including at least one of the third number of the configured path loss reference signals or the fourth number of the activated path loss reference signals, to the UE.

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