System and method for controlling uplink power for simultaneous transmission across multiple transmission configuration indication states

Abstract

Systems and methods for controlling uplink power for simultaneous transmissions across multiple transmission configuration indication states are presented herein. The wireless communication device may determine whether at least one power limit has been exceeded. In response to the at least one power limit being exceeded, the wireless communication device may perform an action to control a plurality of transmission powers for synchronous uplink transmissions. A wireless communication device may send a power headroom report to a wireless communication node.

Description

Technical Field

[0001] This disclosure generally relates to wireless communications, including but not limited to systems and methods for controlling uplink power transmitted simultaneously across multiple Transmission Configuration Indicator (TCI) states. Background Technology

[0002] The standards organization Third Generation Partnership Project (3GPP) is currently developing a new radio interface called 5G New Radio (5G NR) and a Next Generation Packet Core Network (NG-CN or NGC). 5G NR will consist of three main components: 5G Access Network (5G-AN), 5G Core Network (5G Core Network, 5GC), and User Equipment (UE). Summary of the Invention

[0003] The exemplary embodiments disclosed herein are intended to address problems related to one or more issues raised in the prior art and provide additional features that will become apparent when taken in conjunction with the accompanying drawings and the following detailed description. Exemplary systems, methods, apparatuses, and computer program products are disclosed herein according to various embodiments. However, it should be understood that these embodiments are presented by way of example and are not intended to be limiting, and that various modifications can be made to the disclosed embodiments without departing from the scope of this disclosure, as will be apparent to those skilled in the art upon reading this disclosure.

[0004] At least one aspect relates to a system, method, apparatus, or computer-readable medium. A wireless communication device (e.g., User Equipment, UE) can determine whether at least one power limit is exceeded for synchronous uplink transmissions across multiple Transmission Configuration Indicator (TCI) states or Sounding Reference Signal (SRS) resource sets. In response to exceeding at least one power limit, the wireless communication device can perform actions to control multiple transmission powers of the synchronous uplink transmissions.

[0005] In some implementations, at least one power limit may involve / include at least one of the following: a first threshold representing / including / containing an uplink transmission power limit for the wireless communication device to synchronize uplink transmission, or a plurality of second thresholds, each of the second thresholds being an uplink transmission power limit corresponding to a corresponding TCI state or SRS resource set (e.g., UE panel) and a corresponding transmission power among a plurality of transmission powers.

[0006] In some embodiments, the wireless communication device may perform the action, including / complementing at least one of the following: reducing at least one of a plurality of transmission powers, or reducing each of the plurality of transmission powers by a factor or magnitude, such that the power does not exceed a first threshold and / or does not exceed each of a second threshold. In some embodiments, the wireless communication device may perform the action, including / complementing reducing a first transmission power among the plurality of transmission powers, such that the reduced first transmission power does not exceed a corresponding second threshold, and further reducing the reduced first transmission power, such that the sum of the transmission powers including the further reduced first transmission power does not exceed the first threshold. In some embodiments, the wireless communication device may perform the action, including / complementing reducing a first transmission power among the plurality of transmission powers, such that the sum of the transmission powers including the reduced first transmission power does not exceed the first threshold.

[0007] In some implementations, synchronous uplink transmission may include / include at least one of the following: Physical Uplink Shared Channel (PUSCH) transmission, Physical Uplink Control Channel (PUCCH) transmission, Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Physical Random Access Channel (PRACH) transmission, or Uplink Control Information (UCI) signaling.

[0008] In some embodiments, the wireless communication device may perform the action, including / completing the determination of the priority of each of at least some of the transmission powers, thereby allocating power for synchronous uplink transmission. In some embodiments, the wireless communication device may perform the action, including at least one of: determining that a first transmission power has a higher priority than a second transmission power; in response to the determination, allocating the first transmission power in full for transmission; in response to the determination, reducing the second transmission power to the reduced transmission power for transmission; in response to the determination, setting the second transmission power to zero; or in response to the determination, abandoning the transmission corresponding to the second transmission power from synchronous uplink transmission.

[0009] In some implementations, the wireless communication device can determine priority based on / at least one of the following: the type of at least one uplink transmission, or the time relationship between at least two uplink transmissions. In some implementations, in response to at least one of the following: a first transmission power corresponds to a first uplink transmission of a first type and a second transmission power corresponds to a second uplink transmission of a second type, the second type being different from the first type, and the first and second transmissions having a defined time relationship, the wireless communication device can determine that the priority of the first transmission power is higher than the priority of the second transmission power.

[0010] In some implementations, the first uplink transmission of the first type and the second uplink transmission of the second type may each include / comprise at least one of the following: a Physical Uplink Shared Channel (PUSCH) transmission dynamically scheduled by uplink (UL) grants in Downlink Control Information (DCI) signaling and a configured grant PUSCH transmission corresponding to type 1 or type 2, or vice versa; a configured grant PUSCH transmission corresponding to type 2 and a configured grant PUSCH transmission corresponding to type 1, or vice versa; an aperiodic uplink signal and a semi-persistent and / or periodic uplink signal, or vice versa; a Physical Uplink Control Channel (PUCCH) transmission and a PUSCH transmission, or vice versa; a PUCCH transmission with fewer symbols and a PUCCH transmission with more symbols, or vice versa; carrying a Hybrid Automatic Repeat Request acknowledgment. Uplink signals carrying HARQ-ACK (HARQ-ACK) information are the same as uplink signals carrying Channel State Information (CSI) information, and vice versa; uplink signals carrying aperiodic CSI information are the same as uplink signals carrying semi-persistent and / or periodic CSI information, and vice versa; or uplink signals carrying HARQ-ACK or CSI information are the same as uplink signals not carrying HARQ-ACK or CSI information, and vice versa.

[0011] In some implementations, the first uplink transmission and the second uplink transmission may each include / comprise at least one of the following: an uplink signal triggered or activated by an earlier DCI or Medium Access Control Element (MAC CE) signaling and an uplink signal triggered or activated by a later DCI or MAC CE signaling, or vice versa; an uplink signal having a lower slot offset relative to the first activation signaling or the first triggering signaling and an uplink signal having a higher slot offset relative to the second activation signaling or the second triggering signaling, or vice versa, wherein the first activation signaling or the first triggering signaling and the second activation signaling or the second triggering signaling are the same signaling or different signaling; an uplink signal having a lower K2 or slot offset value and an uplink signal having a higher K2 or slot offset value, both triggered by one or more DCI or MAC signals in the same slot. CE signaling triggers or activates, and vice versa; uplink signals with earlier preparation time and uplink signals with later preparation time, and vice versa; uplink signals with earlier transmission time and uplink signals with later transmission time, and vice versa; or uplink signals triggered or activated by earlier DCI or MAC CE signaling and uplink signals with later preparation time, and vice versa.

[0012] In some implementations, for carrier aggregation operations or single-cell operations with multiple uplink carriers, the wireless communication device can determine the priority of each of at least some of the transmission powers, for example by individually determining the (individual / different) priorities of uplink transmissions associated with different TCI states or SRS resource sets (e.g., the same component carrier), or jointly determining the (e.g., common or joint) priorities of uplink transmissions associated with different TCI states or SRS resource sets (e.g., the same component carrier).

[0013] At least one aspect relates to a system, method, apparatus, or computer-readable medium. A wireless communication device may send a power headroom report to a wireless communication node. The power headroom report may include / contain a value that is the difference between the uplink transmission power limit of the wireless communication device and the sum of a plurality of transmit power values ​​of an uplink signal corresponding to a plurality of indicated TCI states or SRS resource sets, and at least one of the following: the ratio of two transmit power values ​​among the plurality of transmit power values, the transmission power of an uplink signal corresponding to a first TCI state or a first SRS resource set divided by the sum of the plurality of transmit power values, and / or the difference between two transmit power values ​​among the plurality of transmit power values.

[0014] In some implementations, the wireless communication device can control the transmission power of synchronous uplink transmission according to at least one of the following example configurations or solutions: Example configuration 1: Scaling based on reduced transmission power.

[0015] Example configuration 2: Prioritization based on reduced transmission power.

[0016] Example configuration 3: Reduced transmission power for carrier aggregation.

[0017] Example Configuration 4: Power Margin Report. Attached Figure Description

[0018] Various exemplary embodiments of this solution will be described in detail below with reference to the accompanying drawings. The drawings are for illustrative purposes only, depicting only exemplary embodiments of this solution to aid the reader's understanding. Therefore, the drawings should not be considered as limitations on the breadth, scope, or applicability of this solution. It should be noted that these drawings are not necessarily drawn to scale for clarity and ease of explanation.

[0019] Figure 1 An example cellular communication network according to an embodiment of the present disclosure is shown, in which the technologies disclosed herein may be implemented; Figure 2 Block diagrams of example base station and user equipment apparatuses according to some embodiments of the present disclosure are shown; Figure 3 Reports of two power margins according to some embodiments of this disclosure are shown; Figure 4 A report of a power margin and a power ratio according to some embodiments of the present disclosure is shown; Figure 5 Reports of three power margins according to some embodiments of this disclosure are shown; and Figure 6 A flowchart of an example method according to an embodiment of this disclosure is shown, which is used to control uplink power transmitted simultaneously across multiple transmission configuration indication states (e.g., corresponding to multiple panels). Detailed Implementation

[0020] In this disclosure, the following terms may be used to define / explain / clarify one or more aspects of the disclosed technology: "Beam status" may include (or correspond to, or be associated with) quasi-co-location (QCL) status, transmission configuration indicator (TCI) status, spatial relationships (also known as spatial relationship information), reference signals (RS), spatial filters, TCI pools, sounding reference signal (SRS) resource sets, or precoding. "Beam status" may refer to "beam." Specifically, - "Tx beam" may include QCL state, TCI state, spatial relationship state, DL / UL reference signals (such as Channel State Information Reference Signal (CSI-RS), Synchronization Signal Block (SSB, also known as SS / PBCH), Demodulation Reference Signal (DMRS), Probe Reference Signal (SRS) and Physical Random Access Channel (PRACH), Tx spatial filter or Tx precoding.

[0021] - "Rx beam" includes QCL state, TCI state, spatial relation state, spatial filter, Rx spatial filter or Rx precoding.

[0022] - "Beam ID" includes QCL state index, TCI state index, spatial relationship state index, reference signal index, spatial filter index, or precoding index.

[0023] A spatial filter can be or includes (or corresponds to, or is associated with) the UE side or the gNB side. A spatial filter may refer to a spatial domain filter.

[0024] "Spatial relationship information" may include / contain (or correspond to, or be associated with) one or more reference RSs for representing the same or quasi-co-located "spatial relationship" between the target "RS or channel" and the one or more reference RSs.

[0025] “Beam state” is associated with or includes / includes one or more reference RSs and / or their corresponding QCL type parameters, wherein the QCL type parameters may include at least one of the following: [1] Doppler spread, [2] Doppler shift, [3] delay spread, [4] average delay, [5] average gain or [6] spatial parameters.

[0026] "TCI status" can refer to "beam status".

[0027] "Spatial parameters" may include (or correspond to, or be associated with) spatial parameters, spatial Rx parameters, or spatial filters.

[0028] In this disclosure, the following definitions / explanations / descriptions exist for 'QCL-TypeA', 'QCL-TypeB', 'QCL-TypeC', and 'QCL-TypeD'.

[0029] -'QCL-TypeA': {Doppler frequency shift, Doppler spread, average delay, delay spread} -'QCL-TypeB': {Doppler frequency shift, Doppler spread} -'QCL-TypeC': {Doppler shift, average delay} -'QCL-TypeD': {Space Rx parameter} "UL channel" can be or includes PUCCH or PUSCH.

[0030] The “DL channel” can be or includes PDCCH or PDSCH.

[0031] “UL RS” can be or include SRS, PRACH or DMRS (e.g., DMRS for PUSCH or PUCCH).

[0032] “DL RS” can be or include SSB, CSI-RS or DMRS (e.g., DMRS for PDSCH or PDCCH).

[0033] "UL signal" can be / includes UL channel or UL RS (e.g., SRS, PRACH, DMRS, PUSCH or PUCCH).

[0034] "DL signal" can be / includes DL channel or DL ​​RS (SSB, CSI-RS, DMRS, PDSCH or PDCCH).

[0035] "Time unit" can be or includes sub-symbol, symbol, time slot, subframe, frame or transmission timing.

[0036] Power control parameters may include (or correspond to, or be associated with) the target power (also known as P0), path loss RS, path loss scaling factor (also known as alpha), or closed-loop process. Path loss may be / includes coupling loss.

[0037] “DCI” can refer to “PDCCH”.

[0038] "Precoding information" may include (or correspond to, or be associated with) PMI, TPMI, precoding, or beamforming.

[0039] "TRP" can include RS ports, RS port groups, RS resources, or RS resource sets.

[0040] A "port group" may include / contains an antenna group or a UE port group.

[0041] In this disclosure, a “carrier component” may include / contain (or correspond to, or be associated with) at least one of the carriers of the serving cell or the supplementary uplink carriers of the serving cell.

[0042] In this disclosure, "panel" may correspond to or be associated with at least one of the following: beam state, TCI state, TCI pool, UE capability value set, panel mode, beam group, antenna group, antenna port group, beam group, beam report group, subarray, SRS resource set, spatial relationship, power control parameter set, CORESETPoolIndex value, or physical cell index (PCI).

[0043] The issues may affect current / future mobile communication systems (such as 6G mobile communication networks).

[0044] 1. Mobile Communication Technology and Environment Figure 1An exemplary wireless communication network and / or system 100 according to embodiments of this disclosure is illustrated, in which the technologies disclosed herein may be implemented. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, referred to herein as "network 100". The example network 100 includes a base station 102 (hereinafter referred to as "BS 102"; also referred to as a wireless communication node) and a user equipment device 104 (hereinafter referred to as "UE 104"; also referred to as a wireless communication device), which can communicate with each other via a communication link 110 (e.g., a wireless communication channel), and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. Figure 1 In this context, BS 102 and UE 104 are located within their respective geographical boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station that operates with its allocated bandwidth to provide adequate radio coverage for its target users.

[0045] For example, BS 102 can operate within its allocated channel transmission bandwidth to provide sufficient coverage for UE 104. BS 102 and UE 104 can communicate via downlink radio frame 118 and uplink radio frame 124, respectively. Each radio frame 118 / 124 can also be divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, BS 102 and UE 104 are described herein as non-limiting examples of "communication nodes" that can generally implement the methods disclosed herein. According to various embodiments of this solution, such communication nodes are capable of wireless and / or wired communication.

[0046] Figure 2 A block diagram of an example wireless communication system 200 according to some embodiments of this solution is shown. The wireless communication system 200 is used to transmit and receive wireless communication signals (e.g., OFDM / OFDMA signals). System 200 may include components and elements configured to support known or conventional operating characteristics, which do not need to be described in detail herein. In an exemplary embodiment, system 200 can be used in a wireless communication environment (e.g., Figure 1 The wireless communication environment 100 shown contains communication (e.g., transmission and reception) data symbols, as described above.

[0047] System 200 typically includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment device 204 (hereinafter referred to as "UE 204"). BS 202 includes a BS (Base Station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218. These modules are coupled and interconnected as needed via a data communication bus 220. UE 204 includes a UE (User Equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236. These modules are coupled and interconnected as needed via a data communication bus 240. BS 202 communicates with UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for data transmission as described herein.

[0048] As will be understood by those skilled in the art, system 200 may also include, in addition to Figure 2 Any number of modules other than those shown. Those skilled in the art will understand that the various exemplary blocks, modules, circuits, and processing logic described in the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, the various exemplary components, blocks, modules, circuits, and steps are generally described in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software depends on the specific application and the design constraints imposed on the system as a whole. Those skilled in the art can implement such functionality appropriately for each specific application, but such implementation decisions should not be construed as limiting the scope of this disclosure.

[0049] According to some embodiments, UE transceiver 230 may be referred to herein as "uplink" transceiver 230. UE transceiver 230 includes a radio frequency (RF) transmitter and an RF receiver, both of which include circuitry coupled to antenna 232. A duplex switch (not shown) can selectively couple either the uplink transmitter or receiver to the uplink antenna in a time-division duplex manner. Similarly, according to some embodiments, BS transceiver 210 may be referred to herein as "downlink" transceiver 210. BS transceiver 210 includes an RF transmitter and an RF receiver, both of which include circuitry coupled to antenna 212. A downlink duplex switch can selectively couple either the downlink transmitter or receiver to downlink antenna 212 in a time-division duplex manner. The operation of the two transceiver modules 210 and 230 can be time-coordinated such that when the uplink receiver circuitry is coupled to uplink antenna 232 to receive transmissions via wireless transmission link 250, the downlink transmitter is simultaneously coupled to downlink antenna 212. Conversely, the operation of the two transceivers 210 and 230 can be time-coordinated such that when the downlink receiver is coupled to the downlink antenna 212 to receive transmissions via the wireless transmission link 250, the uplink transmitter is simultaneously coupled to the uplink antenna 232. In some embodiments, there is tight time synchronization and minimal guard time between duplex direction switching.

[0050] UE transceiver 230 and base transceiver 210 are configured to communicate via wireless data communication link 250 and to cooperate with RF antenna devices 212 / 232 that are appropriately configured to support specific wireless communication protocols and modulation schemes. In some illustrative embodiments, UE transceiver 210 and base transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards. However, it should be understood that this disclosure is not necessarily limited to specific standards and related protocols in application. UE transceiver 230 and base transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0051] According to various embodiments, for example, BS 202 may be an evolved Node B (eNB), serving eNB, target eNB, femto base station, or pico base station, etc. In some embodiments, UE 204 may be embodied as various types of user equipment, such as mobile phones, smartphones, personal digital assistants (PDAs), tablets, laptops, wearable computing devices, etc. Processor modules 214 and 236 may be implemented or practiced as general-purpose processors, content-addressable memory, digital signal processors, application-specific integrated circuits, field-programmable gate arrays, any suitable programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this way, the processor may be implemented as a microprocessor, controller, microcontroller, state machine, etc. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, multiple microprocessors, a combination of one or more microprocessors with a digital signal processor core, or any other such configuration.

[0052] Furthermore, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be directly embodied in hardware, firmware, software modules executed by processor modules 214 and 236 respectively, or any actual combination thereof. Memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 can be coupled to processor modules 210 and 230 respectively, such that processor modules 210 and 230 can read information from and write information to memory modules 216 and 234 respectively. Memory modules 216 and 234 can also be integrated into their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during the execution of instructions executed by processor modules 210 and 230 respectively. Memory modules 216 and 234 may each include non-volatile memory for storing instructions executed by processor modules 210 and 230, respectively.

[0053] Network communication module 218 typically refers to the hardware, software, firmware, processing logic, and / or other components of base station 202 that enable bidirectional communication between base transceiver 210 and other network components and communication nodes configured to communicate with base station 202. For example, network communication module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment (but not limited to), network communication module 218 provides an 802.3 Ethernet interface, enabling base transceiver 210 to communicate with conventional Ethernet-based computer networks. In this way, network communication module 218 may include a physical interface for connecting to a computer network (e.g., a Mobile Switching Center, MSC). The terms “configured for,” “configured as,” and variations thereof, as used herein with respect to a specified operation or function, refer to devices, components, circuits, structures, machines, signals, etc., physically constructed, programmed, formatted, and / or arranged to perform that specified operation or function.

[0054] The Open Systems Interconnection (OSI) model (referred to herein as the "OSI model") is a conceptual and logical layout that defines network communication for interconnection and communication between systems (e.g., wireless communication devices, wireless communication nodes). The model is divided into seven sub-components or layers, each representing a conceptual set of services provided to its upper and lower layers. The OSI model also defines a logical network and efficiently describes the transmission of computer data packets using different layer protocols. The OSI model may also be referred to as the seven-layer OSI model or the seven-layer model. In some embodiments, the first layer may be the physical layer. In some embodiments, the second layer may be the Medium Access Control (MAC) layer. In some embodiments, the third layer may be the Radio Link Control (RLC) layer. In some embodiments, the fourth layer may be the Packet Data Convergence Protocol (PDCP) layer. In some embodiments, the fifth layer may be the Radio Resource Control (RRC) layer. In some embodiments, the sixth layer may be a Non-Access Stratum (NAS) or Internet Protocol (IP) layer, and the seventh layer is another layer.

[0055] Various exemplary embodiments of this solution are described below with reference to the accompanying drawings to enable those skilled in the art to practice and use this solution. As will be apparent to those skilled in the art upon reading this disclosure, various changes or modifications can be made to the examples described herein without departing from the scope of this solution. Therefore, this solution is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order or hierarchy of steps in the methods disclosed herein is merely exemplary. Based on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes can be rearranged without departing from the scope of this solution. Therefore, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in an exemplary order, and unless otherwise expressly stated, this solution is not limited to the specific order or hierarchy presented.

[0056] 2. Used to control uplink power for simultaneous transmission across multiple panels under a unified transmission configuration instruction framework. Systems and Methods In uplink power control within the Transmission Configuration Indicator (TCI) framework for Simultaneous Transmission Across Multiple Panels (STxMP), multiple uplink signals / transmissions are transmitted through different panels of the User Equipment (UE). The total transmission power across all panels can exceed the maximum output power configured for each panel or carrier by the UE. This presents specific challenges for New Radio (NR) systems supporting high-frequency bands. While high-frequency bands offer abundant frequency domain resources, radio signals in these bands attenuate rapidly, significantly limiting the coverage of radio signals operating in these bands.

[0057] As detailed herein, the disclosed solutions may employ one or a combination of (e.g., proportional or non-proportional / weighted) scaling / reduction and priority-based transmission power reduction / allocation. For example, the transmission power for each panel / TCI state may be reduced proportionally such that the sum of the transmission power of all panels does not exceed a maximum output power limit (e.g., limit, threshold, constraint). In some implementations, multiple priority rules may be proposed based on the timeline relationship between uplink signal type and different uplink transmissions to reduce cross-panel transmission power. In some implementations, power headroom reporting may be introduced to inform the network of the difference between the maximum output power and transmission power of each panel, thereby optimizing power usage and system performance. Transmission may include any type or form of transmission, such as signaling (e.g., signaling, messages, communications) and / or channel transmission. As used herein, "transmission" may sometimes be used interchangeably with "signal."

[0058] In some example implementations, uplink (UL) power control issues can be addressed by supporting simultaneous transmission across multiple panels (STxMP) within a unified Transmission Configuration Indication (TCI) framework. In STxMP, a User Equipment (UE) can simultaneously transmit uplink signals or multiple portions of multiple uplink signals across multiple panels and / or TCI / beam states. Within the unified Transmission Configuration Indication (TCI) framework, all channels and reference signals of a panel (e.g., including PDCCH, PDSCH, CSI-RS, PUCCH, PUSCH, and SRS) can be associated with a single TCI state / beam (also referred to herein as a "beam state").

[0059] For STxMP, transmission can be performed / transmitted simultaneously across different panels of the UE. The UE can independently / separately determine (e.g., predict, estimate, calculate, identify) the transmission power of each panel. The transmission power of each panel or TCI can be determined independently / separately based on the corresponding parameters provided / included in the indicated joint / UL TCI state. Specifically, the UE will determine the UL transmission power of the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sounding Reference Signal (SRS) transmission timing or antenna port based on the uplink power control parameter settings for PUSCH / PUCCH / SRS and the path loss reference signal (PL-RS) included in the indicated joint / UL TCI state. To effectively facilitate this determination, a new parameter representing the panel / TCI state index can be introduced into the UL transmit (Tx) power determination formula. For example, for PUSCH transmission, if the UE uses the parameter set configured with index "j" and the PUSCH power control adjustment state configured with index "l" to transmit PUSCH on the active UL bandwidth part (BWP) "b" of carrier "f" of serving cell "c", then the UE can determine the timing of PUSCH transmission. PUSCH transmission power in For example, as shown below:

[0060] Where P CMAX,f,c For the maximum output power of the carrier serving the cell, P O_PUSCH,b,f,c The target received power is configured by the base station. PL is the path loss compensation factor. b,f,c For index q dThe path loss estimate related to the reference signal. Determined based on modulation and coding schemes, and f b,f,c This is for scheduling the transmission power adjustment command received in the DCI. In some implementations, the UE can determine the timing of PUSCH transmission. The calculated transmission power of PUSCH in " For example, as shown below:

[0061]

[0062] Here, "t = 0" and "t = 1" correspond to the first indicated joint / UL TCI state and the second indicated joint / UL TCI state, respectively. In some implementations, the PUSCH transmission power may be limited by the uplink transmission power limit per panel / TCI state. The UE can determine the timing of PUSCH transmission. PUSCH transmission power in For example, as shown below:

[0063] in For each panel / TCI state, the uplink transmission power is limited. "t = 0" and "t = 1" correspond to the first indicated joint / UL TCI state and the second indicated joint / UL TCI state, respectively.

[0064] Based on the above formula, two calculated transmission power values ​​corresponding to two panel / TCI states can be obtained / determined for PUSCH / PUCCH STxMP in a transmission opportunity of the serving cell carrier. Similar to traditional power control mechanisms, the transmission power of the uplink signal in each transmission opportunity may be limited by a maximum output power value, which constrains / limits the sum of the two calculated transmission power values ​​based on per-panel power limits and / or per-UE power limits. The calculated transmission power for each panel / TCI state (e.g., , When such limitations are defined, there may be per-panel power limits and / or per-UE power limits. To address this, this document discloses power scaling methods for situations exceeding per-panel power limits and / or per-UE power limits. For example, the calculated transmission power for each panel / TCI state can be scaled down such that the sum of the transmission power of all panels does not exceed the power limit. Other potential / possible scenarios regarding these limitations are discussed in this document.

[0065] In some configurations, per-panel power limits and / or per-UE power limits can be defined and represented as P. CMAX,f,c The power limit per panel can be defined and expressed as P. CMAX,f,c,t When the calculated transmission power of the uplink signal exceeds the maximum output power (e.g., simultaneously exceeding the per-panel power limit and the per-UE power limit), the UE must proportionally reduce the calculated transmission power of the uplink signal to ensure it does not exceed the maximum value. Specifically, for the carrier of the serving cell during transmission, the calculated transmission power of the PUSCH corresponding to the t-th indicated joint / UL TCI state may first be subject to the per-panel power limit and / or the per-UE power limit. The constraints. Subsequently, if the total transmission power of the UE still exceeds the power limit per panel and / or the power limit per UE. Then the UE can scale the PUSCH transmission power proportionally. To meet the following example conditions:

[0066] Here, It can be the scaling factor for the t-th indicated joint / UL TCI state. , and They can be respectively , and The linear value, or equal to , and The scaling factors for the two indicated joint / UL TCI states can be the same, for example:

[0067] In other possible scenarios, if the total transmission power of the UE exceeds the power limit per panel and / or the power limit per UE. The UE can reduce PUSCH transmission power. To meet the following example conditions:

[0068] Here, It can be a reduction factor for the t-th indicated joint / UL TCI state. , and They can be respectively , and The linear value, or equal to , and In particular, the reduction factor for two indicated joint / UL TCI states can be the same, for example:

[0069] In some configurations, when the per-panel power limit and / or per-UE power limit are not explicitly defined, the per-panel power limit and / or per-UE power limit can be defined and represented as P. CMAX,f,c For the carrier of the serving cell during transmission, if the total transmission power of the UE exceeds the power limit P per UE... CMAX,f,c The UE can transmit power to the PUSCH. Scaling is performed to meet the following example conditions:

[0070] Here, It can be the scaling factor for the t-th indicated joint / UL TCI state. and They can be respectively and The linear value, or equal to and In particular, the scaling factors for two indicated joint / UL TCI states can be the same, for example:

[0071] In other possible scenarios, if the total transmission power of the UE exceeds the power limit per panel and / or the power limit per UE P CMAX,f,c The UE can reduce PUSCH transmission power. To meet the following example conditions:

[0072] Here, It can be a reduction factor for the t-th indicated joint / UL TCI state. and They can be respectively and The linear value, or equal to and In particular, the reduction factor for two indicated joint / UL TCI states can be the same, for example:

[0073] In some configurations, per-panel power limits and / or per-UE power limits can be defined and expressed as P. CMAX,f,c,tAt that time, the per-panel power limit and / or per-UE power limit were not explicitly defined. In this instance / situation / scenario, the PUSCH-calculated transmission power for the carrier of the serving cell during transmission may be subject to the per-panel power limit and / or per-UE power limit. The limitation. The final PUSCH transmission power can be determined for the t-th indicated joint / UL TCI state. .

[0074] In addition to power scaling-based transmission power reduction, the calculated transmission power corresponding to each panel or each indicated joint / ULTCI state can be reduced based on various configured uplink power control parameters. These parameters may include open-loop power control parameters, closed-loop power control parameters, path loss, Transmit Power Control (TPC) commands, and other relevant factors associated with / configured by the indicated joint / UL TCI state. In some implementations, the calculated transmission power corresponding to each panel or each indicated joint / UL TCI state may be reduced based on additional power allocation parameters indicated by the network, such as a power allocation ratio between two transmit power values. Although the power control example provided in the context is for PUSCH transmissions, the same rules and principles can be applied to power control of other uplink signals, such as PUCCH or SRS.

[0075] In some example implementations, a priority-based power reallocation mechanism may be employed, such as for STxMP, to reduce cross-panel transmission power. For example, as detailed herein, the UE may allocate power for PUSCH / PUCCH / PRACH / SRS transmissions associated with different indicated joint / ULTCI states (e.g., different panels) according to priority rules, such that the total UE transmit power transmitted on the carrier of the serving cell in each symbol of the transmission timing may be less than or equal to the per-panel power limit and / or the per-UE power limit.

[0076] In some arrangements / implementations, priority order can be determined based on uplink signal type and the timeline relationship of different uplink transmissions. Specifically, the priority order of power allocation can be determined / influenced / configured / set by (or based on) uplink signal type. For example, PUSCH transmissions “dynamically scheduled” by UL grants in Downlink Control Information (DCI) may have higher priority than PUSCH transmissions corresponding to configured grant type 1 or grant type 2, and vice versa. PUSCH transmissions corresponding to configured grant type 2 may have higher priority than PUSCH transmissions corresponding to configured grant type 1, and vice versa. Transmissions of aperiodic uplink signals may have higher priority than transmissions of semi-persistent and / or periodic uplink signals, and vice versa. PUCCH transmissions may have higher priority than PUSCH transmissions, and vice versa. PUCCH transmissions with fewer symbols may have higher priority than PUCCH transmissions with more symbols, and vice versa.

[0077] In some configurations, the priority order of power allocation can be determined by the "bearer content" of the corresponding uplink transmission. For example, an uplink signal carrying HARQ-ACK information may have a higher priority than an uplink signal carrying CSI information, and vice versa. An uplink signal carrying aperiodic CSI information may have a higher priority than an uplink signal carrying semi-persistent and / or periodic CSI information, and vice versa. An uplink signal carrying either HARQ-ACK or CSI information may have a higher priority than an uplink signal not carrying either HARQ-ACK or CSI information, and vice versa.

[0078] In some configurations, the priority of power allocation can be determined by the "timeline" of the corresponding trigger / activation signaling or transmission timing. For example, the transmission of an uplink signal triggered / activated by an earlier DCI / MAC CE signaling may have a higher priority than the transmission of other uplink signals triggered / activated by a later DCI / MAC CE signaling, and vice versa. If the transmission of two uplink signals is triggered / activated by one or more DCI / MAC CE signalings within the same time slot, the transmission of the uplink signal with a lower K2 value (the "time slot offset" between the DCI and its scheduled PUSCH) may be associated with a higher power allocation priority, and vice versa. An earlier preparation timing (e.g., the first uplink symbol of the uplink transmission minus the uplink transmission preparation time T) also contributes to the priority. proc,2The transmission of uplink signals can be associated with higher power allocation priority. Uplink signals triggered / activated by earlier DCI / MAC CE signaling are more likely to receive power than those with later preparation times (e.g., the first uplink symbol of the uplink transmission minus the uplink transmission preparation time T). proc,2 Other uplink signals may have higher priority. If the transmission timings of different uplink transmissions on two UE panels partially overlap, the uplink signal with an earlier transmission timing (e.g., the first uplink symbol of the uplink transmission) may be associated with higher power allocation priority.

[0079] In some configurations, priority order can be determined / established based on configured uplink power control parameters associated with the indicated joint / UL TCI state. Configured uplink power control parameters may include one of open-loop power control parameters, closed-loop power control parameters, or TPC commands. For example, an uplink signal with higher target receive power may be associated with lower priority.

[0080] In some configurations, priority order can be determined based on additional indications / signaling / messages from the network. For example, the priority index of uplink signals corresponding to different panels (e.g., indicated joint / UL TCI status) can be explicitly signaled to the UE by the network.

[0081] In some configurations, priority order can be determined based on the channel characteristics of different uplink transmissions, such as measured path loss values, number of antenna ports, bandwidth, and / or the amount of physical resources occupied. For example, uplink signals with higher measured path loss values ​​are associated with lower priority.

[0082] In some configurations, one or more priority rules can be used to reduce transmission power. For example, a priority rule based on the corresponding transmission timing timeline may take precedence over all other rules. The order in which the above priority rules are applied may vary depending on different factors or scenarios. In this disclosure, different application orders among different selected priority rules are considered. In addition to the aforementioned priority rules, other implementations can facilitate transmission power reduction. For example, in some implementations, lower-priority transmissions may receive reduced power allocation. Power allocation for each uplink transmission can be performed sequentially according to priority order. If there is sufficient remaining power (e.g., limited by a transmission power cap) to allocate to the uplink signal, it may not be necessary to scale the transmission power of that signal. However, if the remaining power is insufficient to support the signal being transmitted at the desired transmission power, the transmission power of that signal can be reduced accordingly, and the transmission power of other signals with a lower priority than the allocated power signal can be set to zero. In some implementations, lower-priority transmissions can be abandoned (e.g., at least some transmission power can be allocated to higher-priority transmissions and they can be transmitted simultaneously). For example, transmissions of uplink signals with the highest priority can be prioritized, followed by lower-priority signals, and power scaling can be applied to ensure that the power limit per UE is not exceeded. In some implementations, the transmission power of lower priority signals can be set to zero.

[0083] As detailed in this paper, the uplink power control problem of STxMP in the serving cell carrier is solved. In some example implementations, for single-cell operation or carrier aggregation (CA) operation with multiple uplink carriers, multiple uplink signals of different carrier components can be transmitted within the same transmission window, and are therefore subject to the UE's maximum output power limit (P). CMAX The constraints of transmission timing include symbols, time slot durations, sub-time slots, frames, or subframes. If the total UE transmit power of PUSCH, PUCCH, PRACH, or SRS transmissions on the serving cell exceeds the maximum output power P during each transmission timing within the frequency range, the transmission timing will be affected. CMAX Then the UE can allocate or scale the transmission power of multiple uplink signals according to / based on predefined priority rules. Therefore, various priority methods for STxMP transmission power reduction can be established for single-cell operation or carrier aggregation operation with multiple uplink carriers. For example, in some configurations, when performing carrier aggregation operation, the priority of uplink transmission for different panels can be determined separately. This means / indicates / clarifies that for uplink transmissions of different panels on different component carriers, when the maximum output power limit P is exceeded... CMAXIn certain scenarios, the UE can prioritize power allocation for higher-priority transmissions and reduce power for lower-priority transmissions. In some configurations, when performing carrier aggregation, the uplink transmission priorities of different panels can be jointly determined. This means / indicates / clarifies that the uplink transmission priority on each component carrier can be determined based on at least the lower / higher priority of the uplink transmissions from two panels. When the maximum output power limit P is exceeded... CMAX In such cases, the power scaling and / or priority rules detailed herein can be used to reduce the transmission power on each component carrier.

[0084] In some example implementations, the UE can use Power Headroom Reporting (PHR) to inform the network of the difference between the maximum output power configured by the UE and the calculated transmission power of the uplink signal. Power Headroom Reporting can be used to report power usage on the UE side and can be configured to report periodically or trigger a report when the downlink path loss changes by a specific amount. Since there are independent transmission power limits for each component carrier and / or each panel / TCI state, the power headroom can be measured and reported separately for each component carrier and / or each panel / TCI state. Taking PHR for PUSCH transmission as an example, if the UE determines that the Type 1 power headroom report for the active serving cell is based on actual PUSCH transmission, then for PUSCH transmission timing i in the active UL BWP b on carrier f of serving cell c, the UE can calculate the Type 1 power headroom report as follows:

[0085]

[0086] in P O_PUSCH,b,f,c , PL b,f,c , and f b,f,c All are defined in this document. Therefore, power margin is a measure of the power limitation per panel / TCI state of the serving cell carrier. The measurement of the difference between the calculated and actual transmission power is based on the assumption that there is no upper limit to the transmission power. Obviously, the power margin can be positive or negative. Furthermore, based on these two per-panel / TCI state power limits, two power margin reports corresponding to the two panels in the STxMP will be generated.

[0087] Now refer to Figure 3The diagram illustrates two power margins. The first power margin can be the difference between the maximum output power configured for the first UE and the transmission power of the uplink signal corresponding to the first panel or the first indicated joint / UL TCI state. The second power margin can be the difference between the maximum output power configured for the second UE and the transmission power of the uplink signal corresponding to the second panel or the second indicated joint / UL TCI state. In some embodiments, the maximum output power configured for the first UE and the maximum output power configured for the second UE may be the same or different.

[0088] Now refer to Figure 4 This illustrates an example diagram of a reportable power margin and a power ratio. The power margin can be the difference between the maximum output power configured for the UE and the sum of two transmit power values, corresponding to the uplink signals of two panels or two indicated joint / UL TCI states. In some implementations, a power ratio can be reported, representing the ratio of the two transmit power values. For example, as... Figure 3 As shown in B, the power ratio may be equal to the transmit power value of the uplink signal corresponding to the first panel or the first indicated joint / UL TCI state divided by the transmit power value of the uplink signal corresponding to the second panel or the second indicated joint / UL TCI state. In some configurations, the power ratio may be equal to the transmit power value of the uplink signal corresponding to the first panel or the first indicated joint / UL TCI state divided by the sum of the two transmit power values. In some implementations, a power margin and a power difference may be reported. The power margin may be the difference between the maximum output power configured for the UE and the sum of two transmit power values ​​corresponding to the uplink signals of the two panels or the two indicated joint / UL TCI states. The power difference may be equal to the difference between the two transmit power values ​​corresponding to the uplink signals of the two panels or the two indicated joint / UL TCI states.

[0089] Now for reference Figure 5The diagram illustrates three reportable power margins. The first power margin can be the difference between the maximum output power limit configured for a first UE and the transmit power of the uplink signal corresponding to a first panel or a first indicated joint / ULTCI state. The second power margin can be the difference between the maximum output power limit configured for a second UE and the transmit power of the uplink signal corresponding to a second panel or a second indicated joint / ULTCI state. The third power margin can be the difference between the maximum output power limit configured for a third UE and the sum of two transmit power values ​​corresponding to two panels or two indicated joint / ULTCI states. In some embodiments, the maximum output power configured for the first UE, the maximum output power configured for the second UE, and the maximum output power configured for the third UE can be the same or different.

[0090] Now for reference Figure 6 A flowchart of example method 6000 is depicted, which is used to control uplink power transmitted simultaneously across multiple transmission configuration indicator states (e.g., corresponding to multiple panels). Method 6000 can use a combination of Figure 1-5 The method may be implemented using any of the detailed components and devices described. In general, method 6000 may include determining, by a wireless communication device (e.g., a UE), whether at least one power limit has been exceeded (6002). In response to exceeding at least one power limit, the wireless communication device may perform actions to control multiple transmission powers for synchronized uplink transmissions (6004). In some exemplary embodiments, the method may further include sending a power margin report from the wireless communication device to the wireless communication node (6006).

[0091] In operation (6002), and in some arrangements, the wireless communication device (e.g., UE) may evaluate / inspect / analyze synchronous uplink transmissions that will be performed on multiple Transmission Configuration Indication (TCI) states (e.g., representing multiple UE panels). During the evaluation / inspection / analysis, the wireless communication device may determine whether any power limits may be exceeded. Power limits may include per-UE power limits and / or at least one per-panel power limit. The purpose / objective of this determination operation may be to ensure that the total transmission power of the panels does not exceed the maximum output power limit allowed for each panel or carrier and / or for the UE.

[0092] In response to the detection / determination of exceeding at least one power limit, the wireless communication device may take appropriate action to control the transmission power and ensure compliance with the power limit (6004). The specific action taken may depend on the scenario / situation and / or available power resources. For example, the wireless communication device may prioritize certain uplink transmissions over others, or it may scale or reduce the transmission power of certain signals while maintaining full power transmission for other signals. In some implementations, the wireless communication device may drop certain transmissions if necessary to meet the power limit.

[0093] In some configurations, as detailed herein, at least one power limit may be a first threshold representing (e.g., specific to) the wireless communication device (e.g., as a whole, for all transmission panels of the UE) for synchronous uplink transmission. In some implementations, the at least one power limit may include a plurality of second thresholds, each of which is an uplink transmission power limit corresponding to a specific TCI state (e.g., a panel of the UE) and a specific transmission power among a plurality of transmission powers.

[0094] In some configurations, the wireless communication device may perform the action, including / comprise at least one of the following: reducing at least one of a plurality of transmission powers (e.g., by reducing power allocation / setting power allocation to zero), or reducing each of the plurality of transmission powers by a factor or by a quantity, such that a first threshold is not exceeded, and / or each of the second thresholds is not exceeded. In some configurations, the wireless communication device may perform the action, including / comprise: reducing a first transmission power among the plurality of transmission powers, such that the reduced first transmission power does not exceed a corresponding second threshold; and further reducing the reduced first transmission power, such that the sum of transmission powers, including the further reduced first transmission power, does not exceed the first threshold. In some configurations, the wireless communication device may perform the action, including / comprise: reducing a first transmission power among the plurality of transmission powers, such that the sum of transmission powers, including the reduced first transmission power, does not exceed the first threshold.

[0095] For example, as detailed herein, in some implementations, per-panel power limits and / or per-UE power limits can be defined and represented as P. CMAX,f,c Furthermore, the power limit per panel and / or the power limit per UE can be defined and represented as P. CMAX,f,c,tWhen the calculated transmission power of the uplink signal exceeds the maximum output power (e.g., simultaneously exceeding the per-panel power limit and the per-UE power limit), the UE can downscale the calculated transmission power of the uplink signal to ensure it does not exceed the maximum value. Specifically, for the carrier of the serving cell during transmission, the calculated transmission power of the PUSCH corresponding to the t-th indicated joint / UL TCI state may first be subject to the per-panel power limit and / or the per-UE power limit. The limitations apply. Subsequently, if the total transmit power of the UE still exceeds the per-panel power limit and / or per-UE power limit... Then the UE can scale the PUSCH transmission power. To meet, for example, the following conditions:

[0096] Here, It can be the scaling factor for the t-th indicated joint / UL TCI state. , and Can be distinguished , and Linear value, or equal to , and The scaling factors for the two indicated joint / UL TCI states can be the same, for example,

[0097] In other possible scenarios, if the total transmit power of the UE exceeds the power limit per panel and / or the power limit per UE. Then the UE can reduce the PUSCH transmission power. To meet, for example, the following conditions:

[0098] Here, It can be a reduction factor for the t-th indicated joint / UL TCI state. , and They can be respectively , and The linear value, or equal to , and In particular, the reduction factor for two indicated joint / UL TCI states can be the same, for example:

[0099] In some implementations, per-panel power limits and / or per-UE power limits can be defined and represented as P. CMAX,f,c However, no per-panel power limit is defined. For the serving cell's carrier during transmission, if the UE's total transmit power exceeds the per-panel power limit and / or the per-UE power limit P... CMAX,f,c Then the UE can scale the PUSCH transmission power. To meet, for example, the following conditions:

[0100] Here, It can be the scaling factor for the t-th indicated joint / UL TCI state. and They can be respectively and The linear value, or equal to and In particular, the scaling factors for two indicated joint / UL TCI states can be the same, for example:

[0101] In other possible scenarios, if the total transmit power of the UE exceeds the power limit per panel and / or the power limit per UE P CMAX,f,c Then the UE can reduce the PUSCH transmission power. To meet, for example, the following conditions:

[0102] Here, It can be the reduction factor for the t-th indicated joint / UL TCI state. and They can be respectively and The linear value, or equal to and In particular, the reduction factor for two indicated joint / UL TCI states can be the same, for example:

[0103] In some implementations, per-panel power limits and / or per-UE power limits are not defined, while per-panel power limits may be defined and represented as P. CMAX,f,c,t In this instance / situation / scenario, for the carrier of the serving cell during transmission, the PUSCH-calculated transmission power may be limited by the per-panel power. The limitation. The final PUSCH transmission power can be determined for the t-th indicated joint / UL TCI state. .

[0104] In some configurations, synchronous (e.g., concurrent or at least partially overlapping at a specific point in time or duration) uplink transmissions may include / contain any type or form of uplink signaling and / or channel transmissions, which may include at least one of the following: Physical Uplink Shared Channel (PUSCH) transmission, Physical Uplink Control Channel (PUCCH) transmission, Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Physical Random Access Channel (PRACH) transmission, or Uplink Control Information (UCI) signaling.

[0105] In some configurations, the wireless communication device may perform this action, including / completing determining / ordering / identifying the respective priorities (e.g., importance, urgency) of at least a portion of the transmission power (and / or each uplink transmission of at least some uplink transmissions in synchronous transmissions), to allocate power to these synchronous uplink transmissions (of the uplink transmissions). In some configurations, the wireless communication device may perform this action, including at least one of the following: determining that a first transmission power (or a first uplink transmission in uplink transmissions) has a higher priority than a second transmission power (or a second uplink transmission in uplink transmissions); in response to the determination, allocating the first transmission power in full for transmission; in response to the determination, reducing the second transmission power to the reduced transmission power for transmission; in response to the determination, setting the second transmission power to zero (e.g., not performing the corresponding transmission); or in response to the determination, abandoning the transmission corresponding to the second transmission power from the synchronous uplink transmissions (e.g., not performing the corresponding transmission).

[0106] In some configurations, the wireless communication device may determine priority based on at least one of the following: the type of uplink transmission or a time (e.g., timing-related) relationship between at least two uplink transmissions. In some configurations, in response to a first transmission power (and / or a first uplink transmission) corresponding to a first uplink transmission of a first type and a second transmission power (and / or a second uplink transmission) corresponding to a second uplink transmission of a second type, which is different from the first type, and the first and second transmissions having at least one of the following: a defined time relationship, the wireless communication device may determine that the priority of the first transmission power (and / or the first uplink transmission) is higher than the priority of the second transmission power (and / or the second uplink transmission).

[0107] In some configurations, the priority order can be determined at least based on the uplink signal type (e.g., the type, category, level, timing, attributes, characteristics, and / or content of the uplink signal). For example, the first uplink transmission of the first type and the second uplink transmission of the second type may each include / contain at least one of the following: a Physical Uplink Shared Channel (PUSCH) transmission dynamically scheduled by uplink (UL) grants in Downlink Control Information (DCI) signaling and a PUSCH transmission with configured grants corresponding to type 1 or type 2, and vice versa; a PUSCH transmission with configured grants corresponding to type 2 and a PUSCH transmission with configured grants corresponding to type 1, and vice versa; an aperiodic uplink signal and a semi-persistent and / or periodic uplink signal, and vice versa; a Physical Uplink Control Channel (PUCCH) transmission and a PUSCH transmission, and vice versa; a PUCCH transmission with fewer symbols and a PUCCH transmission with more symbols, and vice versa; carrying a Hybrid Automatic Repeat Request acknowledgment. Uplink signals carrying HARQ-ACK (HARQ-ACK) information are the same as uplink signals carrying Channel State Information (CSI) information, and vice versa; uplink signals carrying aperiodic CSI information are the same as uplink signals carrying semi-persistent and / or periodic CSI information, and vice versa; or uplink signals carrying HARQ-ACK or CSI information are the same as uplink signals not carrying HARQ-ACK or CSI information, and vice versa.

[0108] In some configurations, the priority order can be determined at least based on the associated timeline of different uplink transmissions. For example, the first uplink transmission and the second uplink transmission may each include / contain at least one of the following: an uplink signal triggered or activated by an earlier triggering / activation signaling (e.g., DCI or Medium Access Control Control Element (MAC CE) signaling) and an uplink signal triggered or activated by a later triggering / activation signaling (e.g., DCI or MAC CE signaling), or vice versa; an uplink signal having a smaller time slot offset relative to the first activation signaling or the first triggering signaling and an uplink signal having a larger time slot offset relative to the second activation signaling or the second triggering signaling, or vice versa, wherein the first activation signaling or the first triggering signaling and the second activation signaling or the second triggering signaling are the same signaling or different signaling in the same time slot; an uplink signal with an earlier preparation time and an uplink signal with a later preparation time, or vice versa; an uplink signal with an earlier transmission time and an uplink signal with a later transmission time, or vice versa; or an uplink signal triggered or activated by an earlier DCI or MAC CE signaling. Uplink signals triggered or activated by CE signaling are those with a later preparation time, and vice versa.

[0109] In certain configurations, for carrier aggregation operations or single-cell operations with multiple uplink carriers, the wireless communication device may determine the priority of each of at least some of the transmission powers by: determining (independent / different) priorities of uplink transmissions associated with different TCI states or SRS resource sets (e.g., each priority is determined independently / separately), or jointly determining (common / joint / single) priorities of uplink transmissions associated with different TCI states or SRS resource sets (e.g., the same component carrier).

[0110] At least one aspect relates to a system, method, apparatus, or computer-readable medium. A wireless communication device may transmit a power headroom report (6006) to a wireless communication node. In some configurations, the power headroom report may include / contain a value: the difference between the uplink transmission power limit of the wireless communication device and the sum of multiple transmit power values ​​corresponding to multiple indicated TCI states or SRS resource sets, and / or at least one of the following: a ratio of two transmit power values, the transmission power of the uplink signal corresponding to a first TCI state or a first SRS resource set divided by the sum of the multiple transmit power values, and / or the difference between two of the multiple transmit power values.

[0111] While various embodiments of the present solution have been described above, it should be understood that these embodiments are presented by way of example only and not as limitations. Similarly, various illustrations may depict exemplary architectures or configurations intended to enable those skilled in the art to understand the exemplary features and functionality of the present solution. However, those skilled in the art will understand that the present solution is not limited to the exemplary architectures or configurations illustrated, but can be implemented using various alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of one embodiment / implementation may be combined with one or more features of another embodiment / implementation described herein. Therefore, the scope and breadth of this disclosure should not be limited to any of the exemplary embodiments described above.

[0112] It should also be understood that the use of terms such as "first," "second," etc., to designate any reference to elements in this document generally does not restrict the number or order of these elements. Rather, these designations serve as a convenient way to distinguish between two or more elements or instances of elements. Therefore, references to the first and second elements do not imply that only two elements can be used, nor do they imply that the first element must precede the second element in some way.

[0113] Furthermore, those skilled in the art will understand that information and signals can be represented using a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0114] Those skilled in the art will also understand that the various exemplary logic blocks, modules, processors, devices, circuits, methods, and functions relating to the various aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of both), firmware, various forms of program or design code containing instructions (which may be referred to herein as "software" or "software module" for convenience), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, various exemplary components, blocks, modules, circuits, and steps have been generally described above from a functional perspective. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and design constraints imposed on the system as a whole. Those skilled in the art can implement the described functionality in various ways for each specific application, but such implementation decisions will not depart from the scope of this disclosure.

[0115] Furthermore, those skilled in the art will understand that the various exemplary logic blocks, modules, devices, components, and circuits described herein can be implemented within or executed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, or any combination thereof. Logic blocks, modules, and circuits may also include antennas and / or transceivers for communicating with various components within a network or device. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other suitable configuration to perform the functions described herein.

[0116] If implemented as software, these functions can be stored as one or more instructions or code on a computer-readable medium. Therefore, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, encompassing any medium capable of transmitting computer programs or code from one place to another. Storage media can be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and is accessible to a computer.

[0117] As used in this document, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the functions described herein. Furthermore, for ease of discussion, each module is described as a discrete module; however, as will be apparent to those skilled in the art, two or more modules can be combined to form a single module to perform the relevant functions according to embodiments of this solution.

[0118] Furthermore, embodiments of this solution may employ memory or other storage devices and communication components. It should be understood that, for clarity, the above description has illustrated embodiments of this solution with reference to different functional units and processors. However, it is apparent that any appropriate allocation of functionality among different functional units, processing logic elements, or domains will not diminish the substance of this solution. For example, functions illustrated as being performed by independent processing logic elements or controllers may be performed by the same processing logic element or controller. Therefore, references to specific functional units refer only to appropriate means of providing said functionality and do not imply a strict logical or physical structure or organization.

[0119] Various modifications to the embodiments described herein will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but should be given the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A method comprising: determining, by a wireless communication device, whether at least one power limit is exceeded for a simultaneous uplink transmission of the wireless communication device across multiple transmission configuration indication (TCI) states or sounding reference signal (SRS) resource sets; and performing, by the wireless communication device, an action to control one or more of a plurality of transmission powers for the simultaneous uplink transmission in response to the at least one power limit being exceeded.

2. The method of claim 1, wherein the at least one power limit comprises at least one of: a first threshold comprising an uplink transmission power limit for the wireless communication device for the simultaneous uplink transmission; or a plurality of second thresholds, each of the plurality of second thresholds being an uplink transmission power limit corresponding to a respective one of the plurality of TCI states or SRS resource sets and a respective one of the plurality of transmission powers.

3. The method of claim 2, wherein performing the action comprises at least one of: reducing at least one of the plurality of transmission powers; or reducing each of the plurality of transmission powers by a factor or a value, such that at least one of the following is satisfied: the first threshold is not exceeded, or each of the plurality of second thresholds is not exceeded.

4. The method of claim 1, wherein the simultaneous uplink transmission comprises at least one of a physical uplink shared channel (PUSCH) transmission, a physical uplink control channel (PUCCH) transmission, a sounding reference signal (SRS), a demodulation reference signal (DMRS), a physical random access channel (PRACH) transmission, or uplink control information (UCI) signaling.

5. The method of claim 3, wherein performing the action comprises at least one of: determining, by the wireless communication device, a priority of each of at least some of the transmission powers for power allocation for the simultaneous uplink transmission.

6. The method of claim 5, comprising at least one of: determining, by the wireless communication device, that a priority of a first transmission power of the transmission powers is higher than a priority of a second transmission power of the transmission powers; full-allocating, by the wireless communication device, the first transmission power for transmission in response to the determining; reducing, by the wireless communication device, the second transmission power to a reduced transmission power for transmission in response to the determining; setting, by the wireless communication device, the second transmission power to zero in response to the determining; or dropping, by the wireless communication device, a transmission corresponding to the second transmission power from the simultaneous uplink transmission in response to the determining.

7. The method of claim 6, comprising determining the priority according to at least one of a type of at least one of the uplink transmissions, or a time relationship between at least two of the uplink transmissions. ​ 8. The method of claim 6 or 7, comprising determining that the priority of the first transmission power is higher than the priority of the second transmission power in response to at least one of: the first transmission power corresponds to a first uplink transmission of a first type and the second transmission power corresponds to a second uplink transmission of a second type, the second type being different from the first type; or the first transmission has a defined time relationship with the second transmission. the first uplink transmission of the first type and the second uplink transmission of the second type comprise, respectively: physical uplink shared channel, PUSCH, transmissions dynamically scheduled by uplink, UL, grants in downlink control information, DCI, signaling and PUSCH transmissions corresponding to configured grants of type 1 or type 2, or vice versa; 9. The method of claim 8, wherein, PUSCH transmissions corresponding to configured grants of type 2 and PUSCH transmissions corresponding to configured grants of type 1, or vice versa; aperiodic uplink signals and semi-persistent and / or periodic uplink signals, or vice versa; physical uplink control channel, PUCCH, transmissions and physical uplink shared channel, PUSCH, transmissions, or vice versa; PUCCH transmissions with a smaller number of symbols and PUCCH transmissions with a larger number of symbols, or vice versa; uplink signals carrying hybrid automatic repeat request acknowledgement, HARQ-ACK, information and uplink signals containing channel state information, CSI, information, or vice versa; uplink signals carrying aperiodic CSI information and uplink signals carrying semi-persistent and / or periodic CSI information, or vice versa; or uplink signals carrying HARQ-ACK or CSI information and uplink signals not carrying HARQ-ACK or CSI information, or vice versa.

10. The method of claim 8, wherein the first uplink transmission and the second uplink transmission comprise, respectively: uplink signals triggered or activated by earlier DCI or medium access control control element, MAC CE, signaling and uplink signals triggered or activated by later DCI or MAC CE signaling, or vice versa; uplink signals having a lower slot offset with respect to a first activation signaling or a first triggering signaling and uplink signals having a higher slot offset with respect to a second activation signaling or a second triggering signaling, or vice versa, wherein the first activation signaling or first triggering signaling and the second activation signaling or second triggering signaling are the same signaling or different signaling in a same slot; uplink signals having an earlier preparation occasion and uplink signals having a later preparation occasion, or vice versa; uplink signals having an earlier transmission occasion and uplink signals having a later transmission occasion, or vice versa; or uplink signals triggered or activated by earlier DCI or MAC CE signaling and uplink signals having a later preparation occasion, or vice versa. ​ ​ ​ 11. The method of claim 5, wherein determining a priority of each of at least some of the transmission powers comprises, for operation with carrier aggregation, or for single-cell operation with multiple uplink carriers: determining a priority of uplink transmissions associated with different TCI states or SRS resource sets, respectively; or jointly determining a priority of uplink transmissions associated with different TCI states or SRS resource sets.

12. The method of claim 3, comprising: reducing, by the wireless communication device, a first transmission power of the plurality of transmission powers such that the reduced first transmission power does not exceed a corresponding second threshold of the plurality of second thresholds; and further reducing, by the wireless communication device, the reduced first transmission power such that a sum of transmission powers including the further reduced first transmission power does not exceed the first threshold.

13. The method of claim 3, comprising: reducing, by the wireless communication device, a first transmission power of the plurality of transmission powers such that a sum of transmission powers including the reduced first transmission power does not exceed the first threshold.

14. The method of claim 1, comprising: sending, by the wireless communication device to a wireless communication node, a power headroom report comprising: a value comprising a difference between an uplink transmission power limit of the wireless communication device and a sum of a plurality of transmit power values of uplink signals corresponding to a plurality of TCI states or SRS resource sets; and a power ratio comprising: a ratio between two of the plurality of transmit power values, or a transmission power of an uplink signal corresponding to a first TCI state or a first SRS resource set divided by the sum of the plurality of transmit power values, or a difference between two of the plurality of transmit power values.

15. A non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform the method of any one of claims 1-14.

16. An apparatus comprising: at least one processor configured to perform the method of any one of claims 1-14. ​ ​ ​ ​ ​

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