Systems and methods for power control in uplink transmissions

Abstract

Disclosed herein are a system and method for wireless communication. One embodiment includes a wireless communication device receiving, from a wireless communication node, a configuration comprising a plurality of sets of power control parameters; and receiving, from the wireless communication node, signaling associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances.

Description

[0001] This application is a divisional application of the invention patent application with international application number PCT / CN2020 / 139113, international application date of December 24, 2020, entered the Chinese national phase on June 19, 2023, Chinese national application number 202080108057.7, and invention title "System and method for power control in uplink transmission". Technical Field

[0002] This disclosure relates generally to wireless communications, and more specifically to systems and methods for transmission power control of Physical Uplink Shared Channel (PUSCH). Background Technology

[0003] Joint transmission or reception refers to the simultaneous transmission or reception of multiple signals from multiple sites. Multi-TRP (Multi-Transmitter-Receiver Point) joint transmission or reception plays a crucial role in improving the throughput of wireless communications. Both LTE-A (Long Term Evolution-Advanced Technology) and New Radio Access Technology (NR) support multi-transmitter-receiver node transmission. Summary of the Invention

[0004] The exemplary implementations disclosed herein are intended to address problems related to one or more issues existing in the prior art, and provide additional features that will become clear from the following detailed description taken in conjunction with the accompanying drawings. Exemplary systems, methods, apparatuses, and computer program products are disclosed herein according to various implementations. However, it should be understood that these implementations are presented by way of example and not as limiting, and that it will be apparent to those skilled in the art who read this disclosure that various modifications can be made to the disclosed implementations while remaining within the scope of this disclosure.

[0005] In one implementation, a method performed by a wireless communication device includes: receiving from a wireless communication node a configuration comprising a plurality of power control parameter sets; and receiving from the wireless communication node signaling for associating the plurality of power control parameter sets with a plurality of uplink data transmission instance sets.

[0006] In another implementation, a method performed by a wireless communication device includes each set of power control parameters, each set of which includes at least one of the following: target received power, fractional path loss compensation ratio, physical uplink shared channel (PUSCH) path loss estimation reference signal index, or closed-loop power control adjustment index.

[0007] In one implementation, a method performed by a wireless communication node includes: transmitting to a wireless communication device a configuration comprising a plurality of power control parameter sets; and transmitting to the wireless communication device signaling for associating the plurality of power control parameter sets with a plurality of uplink data transmission instance sets.

[0008] In another implementation, a method performed by a wireless communication node includes each set of power control parameters, each set of which includes at least one of the following: target received power, fractional path loss compensation ratio, physical uplink shared channel (PUSCH) path loss estimation reference signal index, or closed-loop power control adjustment index.

[0009] The above and other aspects and their implementations are described in more detail in the accompanying drawings, description and claims. Attached Figure Description

[0010] Various example implementations of this solution are described in detail below with reference to the figures or accompanying drawings. The figures are provided for illustrative purposes only and merely depict example implementations of this solution to aid the reader's understanding. Therefore, the figures should not be considered as limitations on the breadth, scope, or applicability of this solution. It should be noted that these figures are not necessarily drawn to scale for clarity and ease of explanation.

[0011] Figure 1 An example cellular communication network is shown that implements the techniques and other aspects disclosed herein.

[0012] Figure 2 Block diagrams of example base stations and user equipment devices according to some implementations of this disclosure are shown.

[0013] Figure 3 An example method is shown for configuring a UE for multiple TRP PUSCH repetition based on a single DCI, according to some implementations of this disclosure.

[0014] Figure 4 A block diagram of a multi-TRP PUSCH operation based on a single DCI, according to some implementations of this disclosure, is shown.

[0015] Figure 5 Examples of PUSCH path loss RS updated by MAC CE according to some implementations of this disclosure are shown.

[0016] Figure 6 Example methods of configuring a UE for multiple TRP PUSCH repetitions based on a single DCI are shown in some implementations of this disclosure. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, illustrates various example implementations of this solution to enable those skilled in the art to create and use it. As will be apparent to those skilled in the art, after 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 example implementations and applications described and illustrated herein. Furthermore, the specific order or hierarchy of steps in the methods disclosed herein is merely an example method. Based on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes can be rearranged while remaining within the scope of this solution. Therefore, unless explicitly stated otherwise, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or actions in an example order, and that this solution is not limited to the specific order or hierarchy presented.

[0018] Figure 1 An example wireless communication network and / or system 100 according to the present disclosure is shown, in which the techniques disclosed herein can be implemented. In the following discussion, wireless communication network 100 can be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 100". Such an example network 100 includes base station 102 (hereinafter referred to as "BS102") and user equipment 104 (hereinafter referred to as "UE 104") that can communicate with each other via 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, BS102 and UE 104 are contained within the 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 operating with its allocated bandwidth to provide sufficient radio coverage to its intended users.

[0019] For example, BS102 can operate with the allocated channel transmission bandwidth to provide sufficient coverage to UE 104. BS102 and UE 104 can communicate via downlink radio frame 118 and uplink radio frame 124, respectively. Each radio frame 118 / 124 can be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, BS102 and UE 104 are described herein as non-limiting examples of "communication nodes" that can generally practice the methods disclosed herein. According to various implementations of this solution, such communication nodes may be able to perform wireless and / or wired communication.

[0020] Figure 2A block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some implementations of this solution is shown. System 200 may include components and elements configured to support known or conventional operating characteristics that do not need to be described in detail herein. In one illustrative implementation, system 200 may be used in applications such as... Figure 1 In wireless communication environments such as 100, data symbols are transmitted (e.g., transmitted and received), as described above.

[0021] System 200 typically includes a base station 202 (hereinafter referred to as "BS202") and a user equipment 204 (hereinafter referred to as "UE204"). BS202 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, each module being coupled and interconnected with each other as needed via a data communication bus 220. UE 204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected with each other as needed via a data communication bus 240. BS202 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.

[0022] As those skilled in the art will understand, system 200 may also include Figure 2 Any number of other modules besides those shown. Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the implementations 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 illustrative components, blocks, modules, circuits, and steps are generally described according to their functionality. Whether such functionality is implemented in hardware, firmware, or software can depend on the specific application and design constraints imposed on the system as a whole. Those skilled in the art can implement such functionality appropriately for each specific application; however, such implementation decisions should not be construed as limiting the scope of this disclosure.

[0023] According to some implementations, UE transceiver 230 may be referred to herein as "uplink" transceiver 230. Transceiver 230 includes a radio frequency (RF) transmitter and an RF receiver, each of which includes circuitry coupled to antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time-duplex manner. Similarly, according to some implementations, BS transceiver 210 may be referred to herein as "downlink" transceiver 210. Transceiver 210 includes an RF transmitter and an RF receiver, each of which includes circuitry coupled to antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to downlink antenna 212 in a time-duplex manner. The operation of the two transceiver modules 210 and 230 may be time-coordinated such that the uplink receiver circuitry is coupled to uplink antenna 232 for reception of transmissions over radio link 250 when the downlink transmitter is coupled to downlink antenna 212. In some implementations, there exists tight time synchronization with minimum protection time between changes in the duplex direction.

[0024] UE transceiver 230 and base transceiver 210 are configured to communicate via wireless data communication link 250 and cooperate with RF antenna arrangements 212 / 232 appropriately configured to support specific wireless communication protocols and modulation schemes. In some illustrative implementations, UE transceiver 230 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 application to specific standards and related protocols. Rather, 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.

[0025] Depending on the implementation, BS202 can be an evolved Node B (eNB), serving eNB, target eNB, femtocell, or picocell. In some implementations, UE 204 can be embodied in 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 can be implemented or implemented using a general-purpose processor, content-addressable memory, digital signal processor, application-specific integrated circuit, field-programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this way, the processor can be implemented as a microprocessor, controller, microcontroller, state machine, etc. The processor can 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 such configuration.

[0026] Furthermore, the steps of the methods or algorithms described in conjunction with the implementations disclosed herein can be directly embodied in hardware, firmware, software modules executed by processor modules 214 and 236 respectively, or in any practical 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 respect, 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 implementations, each of memory modules 216 and 234 may include a cache memory for storing temporary variables or other intermediate information during the execution of instructions to be executed by processor modules 210 and 230 respectively. Memory modules 216 and 234 may each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0027] Network communication module 218 generally refers to the hardware, software, firmware, processing logic, and / or other components of base station 202 used to enable bidirectional communication between base station transceiver 210 and other network components and communication nodes configured to communicate with network base station 202. For example, network communication module 218 may be configured to support Internet or WiMAX services. In a typical deployment, without limitation, network communication module 218 provides an 802.3 Ethernet interface, enabling base station transceiver 210 to communicate with conventional Ethernet-based computer networks. In this way, network communication module 218 may include a physical interface for connection to a computer network (e.g., a mobile switching center (MSC)). As used herein with respect to the specified operation or function, the terms “configured for,” “configured to,” and their variations refer to devices, components, circuits, structures, machines, signals, etc., physically constructed, programmed, formatted, and / or arranged to perform the specified operation or function.

[0028] New Radio (NR) is a new radio access technology developed by the 3rd Generation Partnership Project (3GPP) as a standard for the air interface in radio networks. Available frequencies for use in NR systems include a first frequency range (FR1) and a second frequency range (FR2). FR1 includes frequencies below 6 GHz, while FR2 includes frequencies within the millimeter wavelength range (e.g., above 6 GHz).

[0029] 5G NR includes Multiple-Input Multiple-Output (MIMO) features, which facilitate the use of a large number of antenna elements at the base station (BS). One MIMO feature is support for multiple TRP operation. In 5G NR, PUSCH repetition is supported based on a single TRP. A single TRP reduces the reliability of the communication system. For example, in FR2, the reliability of PUSCH repetition based on a single TRP is reduced when the link between the UE and the TRP is congested. The BS can use multiple TRPs to transmit data to the UE to improve transmission performance. The UE can use the same information for repeated transmissions across multiple time slots. That is, each transmission uses at least the same spatial relationships, precoder, and / or power control parameters as PUSCH transmission / repetition is used for a single TRP. The robustness and reliability of PUSCH transmission can be improved through multi-TRP PUSCH repetition based on a single downlink control information (DCI).

[0030] Figure 3 An example method 300 is shown, in which a UE is configured for multiple TRP PUSCH repetitions based on a single DCI, according to some implementations of this disclosure.

[0031] As shown in 301, the UE can receive a configuration of a set of power control parameters from the BS. The power control parameters may include at least one of the following: target received power, fractional path loss compensation ratio, Physical Uplink Shared Channel (PUSCH) path loss estimation reference signal index, or closed-loop power control adjustment index. The configured set of power control parameters can be received via Radio Resource Control (RRC) signaling.

[0032] As shown in 302, the UE can also receive signaling from the BS for associating a configured set of power control parameters with a set of uplink data transmission instances. For example, a first mapping list and a second mapping list may exist, where these two mapping lists are used to associate two SRI indications with the power control parameters of two PUSCH transmission sets, respectively. The UE can be scheduled to transmit multiple PUSCH transmissions, where each PUSCH transmission instance can be associated with an SRS resource set. The SRS resource set can be configured to have the same higher-layer parameters used in the SRS-ResourceSet. The SRS-ResourceSet can be set to "codebook" or "non-codebook". That is, each of the uplink data transmission instances can be a codebook-based PUSCH transmission or a non-codebook-based PUSCH transmission.

[0033] Alternatively, a first configuration mapping and a second configuration mapping may exist in the mapping list of a single configuration. The two mappings in the mapping list of a single configuration can be used to associate the SRI indication with the power control parameters of two PUSCH transmission sets, respectively. The first and second mappings in the mapping list of a single configuration can be the first and second elements of the mapping in the single configuration, respectively. Alternatively, the first and second mappings in the mapping in a single configuration can be the first elements of the first and second halves of the configured mapping list, respectively.

[0034] Figure 4 A block diagram 400 illustrating a multi-TRP PUSCH operation based on a single DCI according to some implementations of this disclosure is shown. As shown, a first PUSCH 401 (PUSCH0) is transferred 402 to a first TRP 403 (TRP0), and a second PUSCH 404 (PUSCH1) is transferred 405 to a second TRP 406 (TRP1). The first PUSCH 402 transfer may use a first probe resource set (SRS) (e.g., SRS set 0), and the second PUSCH 405 transfer may use a second SRS set (e.g., SRS set 1).

[0035] Because the channel conditions of the links between the UE and multiple TRPs (e.g., TRP0 403 and TRP1 406) differ, the power transmitted by different PUSCHs can be independent for each TRP. As described herein, RRC signaling can be configured for each TRP so that the power control parameters for each TRP can be independent.

[0036] PUSCH transport sets (e.g., PUSCH 401 and PUSCH 404) can be distinguished in various ways, including: (1) a first PUSCH transport set can be associated with a first SRS resource set using non-codebook-based transport, and a second PUSCH transport set can be associated with another SRS resource set using non-codebook-based transport; (2) a first PUSCH transport set can correspond to a first transport timing, and a second PUSCH transport set can correspond to a second transport timing; (3) a first PUSCH transport set can correspond to a first frequency hopping, and a second PUSCH transport set can correspond to a second frequency hopping; (4) a first PUSCH transport set can include the first half of a PUSCH transport set, and a second PUSCH transport set can include PU The latter half of the SCH transport set, (5) the first PUSCH transport set may include PUSCH transports in the PUSCH transport set with odd order, the second PUSCH transport set may include PUSCH transports in the PUSCH transport set with even order, (6) the first PUSCH transport set may include some PUSCH transports (e.g., the first PUSCH transport, the second PUSCH transport, the fifth PUSCH transport and the sixth PUSCH transport), the second PUSCH transport set may include other PUSCH transports (e.g., the third PUSCH transport, the fourth PUSCH transport, the seventh PUSCH transport and the eighth PUSCH transport).

[0037] Multi-TRP PUSCH transports based on a single DCI can be configured such that several (e.g., two) SRS resource sets are configured to use the same higher-level parameters in an SRS-ResourceSet set set to "codebook" or "non-codebook". Several (e.g., two) SRI indications in the DCI field can be used for SRS resource indications of various SRS resource sets. In one configuration, the transport rank and the number of (multiple) SRS ports can be the same for each codebook-based or non-codebook-based PUSCH transport.

[0038] The UE can transmit uplink data based on either codebook-based or non-codebook-based PUSCH transmissions. Power control mechanisms for codebook-based and non-codebook-based PUSCH transmissions may include BS configuring UE-specific power control parameters for PUSCH transmissions. Specifically, the BS may configure higher-layer parameters PUSCH-PowerControl. Power control parameters may include at least one of the following: (1) a set of open-loop power control parameters (e.g., higher-layer parameters p0-AlphaSets), (2) a set of PUSCH path loss estimation reference signal (RS) indices (e.g., higher-layer parameters pathlossReferenceRSToAddModList), and (3) a mapping list (e.g., higher-layer parameters SRI-PUSCH-MappingToAddModList).

[0039] The open-loop power control parameter set may include at least one of the open-loop power control parameters (e.g., the higher-layer parameter p0-PUSCH-AlphaSet). The open-loop power control parameters may include at least the target received power (denoted as p0) or the fractional path loss compensation ratio (denoted as α).

[0040] The PUSCH path loss estimation RS index set may include at least one of the PUSCH path loss estimation RS indexes (e.g., the high-level parameter PUSCH-PathlossReferenceRS). The PUSCH path loss estimation RS index (denoted as q) d The RS resource index may include an RS resource index that corresponds to at least one of the following: (1) a Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) block index, or (2) a Non-Zero Power (NZP) Channel State Information (CSI) RS resource index.

[0041] A mapping list (e.g., a first mapping list, a second mapping list, or a mapping list containing a first mapping and a second mapping) may include at least a configured mapping (e.g., a higher-layer parameter SRI-PUSCH-PowerControl). The configured mapping may include at least one of the power control parameters, such as: (1) an identifier of an open-loop power control parameter (e.g., a higher-layer parameter SRI-P0-PUSCH-AlphaSetId), (2) an identifier of a PUSCH path loss estimation RS index (e.g., a higher-layer parameter SRI-PUSCH-PathlossReferenceRS-ID), or (3) a value of a closed-loop power control adjustment (e.g., a higher-layer parameter SRI-PUSCH-CloseLoopIndex). The mapping list may map an SRI indication to one or more power control parameters. In one example, the first mapping list may map a first SRI field to a set of power control parameters corresponding to a first set of uplink data transmission instances. Furthermore, the second mapping list may map a second SRI field to a set of power control parameters corresponding to a second set of uplink data transmission instances.

[0042] When a UE is scheduled to transmit PUSCH transmissions, power control parameters can be determined. Scheduling authorization may include downlink control information (DCI) format, a configuration authorization, and / or dynamic configuration authorization. Within the first set of PUSCH transmissions, the UE can determine the power control parameters for each PUSCH transmission based on a mapping from a first mapping list.

[0043] In one embodiment, the UE may determine the value of the open-loop power control parameter based on the configured mapping and SRI field value in the following cases: (1) the UE is provided with various identifiers of the open-loop power control parameter through the configured mapping (e.g., there are various identifiers of the open-loop power control parameter configured by a mapping list of a single configuration including a first mapping configuration and a second mapping configuration, a mapping of configurations from the first mapping list and / or a mapping of configurations from the second mapping list), and (2) the scheduling authorization for scheduling PUSCH transmissions includes one or more SRS Resource Indicator (SRI) fields (e.g., PUSCH transmissions are scheduled based on the first SRI field and / or the second SRI field).

[0044] For example, a first value for an open-loop power control parameter may be based on a configuration mapping from a first mapping list and the SRI field value in a first SRI field associated with the configuration mapping from the first mapping list. A second value for an open-loop parameter may be based on a configuration mapping from a second mapping list and the SRI field value in a second SRI field associated with the configuration mapping from the second mapping list. Alternatively or additionally, the first value for an open-loop power control parameter may be based on a first mapping and / or a second mapping contained within a single configuration mapping list.

[0045] If the scheduling authorization also includes an open-loop power control parameter set indication field and the value in that field is "1", the UE can determine the value of p0 from the value in the configured higher-layer parameter p0-PUSCH-set-r16, where the p0-PUSCH-SetIf-r16 value maps to the SRI field.

[0046] In one example, the first open-loop parameter set indicator field can be "1". Therefore, the UE can determine p0 from the first value in the first higher-layer parameter p0-PUSCH-set-r16, where the p0-PUSCH-SetId-r16 value maps to the first SRI field value. Similarly, the second open-loop power control parameter set indicator field can be "1". Therefore, the UE can determine p0 from the first value in the second higher-layer parameter p0-PUSCH-set-r16, where the p0-PUSCH-SetId-r16 value maps to the second SRI field value.

[0047] In one embodiment, if the UE is not provided with a configured mapping (e.g., a first or second mapping in a single configured mapping list), the UE can determine the value of the open-loop power control parameter based on a first or second open-loop power control parameter from a set of open-loop power control parameters (e.g., a default set). The default open-loop power control parameter can be associated with a single configured mapping list. Alternatively, the UE can determine a default value for the power control parameter corresponding to the first or second set of uplink data transmission instances.

[0048] Similarly, if the scheduling grant for scheduling PUSCH transmission does not include the first SRI field or the second SRI field, the UE can determine the value of the open-loop power control parameter based on the first open-loop power control parameter or the second open-loop power control parameter in the open-loop power control parameter set.

[0049] The default value may include at least one of the following: (1) the target received power identified from the open-loop power control parameters in the open-loop power control parameter set (e.g., identified in the first open-loop power control parameter or the second open-loop control parameter), (2) the fractional path loss compensation ratio identified from the open-loop power control parameters in the open-loop power control parameter set (e.g., identified in the first open-loop power control parameter or the second open-loop control parameter), and (3) the PUSCH path loss estimate RS index q mapped to the mapping list identified as 0 if the first mapping and / or scheduling authorization does not exist, or mapped to the mapping list identified as 1 if the second mapping and / or scheduling authorization does not exist. d , and (4) the closed-loop power control regulation index l with a value of 0 if the first mapping and / or scheduling authorization does not exist and a value of 1 if the second mapping and / or scheduling authorization does not exist.

[0050] In an alternative embodiment, if the UE is provided with a second mapping list but not with a second SRI field containing the configurations included in the second mapping list, the UE can use a default value to determine the power control parameter value corresponding to the second set of uplink data transmission instances. The default value can be associated with a configuration mapping in the second mapping list.

[0051] The default value may include at least one of the following: (1) the target received power identified from the open-loop power control parameters in the set of open-loop power control parameters configured in the second mapping list; (2) the fractional path loss compensation ratio identified from the open-loop power control parameters in the set of open-loop power control parameters configured in the second mapping list; and (3) the PUSCH path loss estimate RS index q determined from the configured mapping in the second mapping list. d , and (4) the closed-loop power control adjustment index l determined from the configured mapping in the second mapping list.

[0052] In one example, the UE may be provided with various identifiers of open-loop power control parameters configured by a configured mapping (e.g., a first mapping and a second mapping in a single configured mapping list). The UE may receive a scheduling grant that schedules a first PUSCH transmission using a first SRI field and a second PUSCH transmission without an associated second SRI field. The UE may determine the value of the open-loop power control parameter based on the first mapping in a single configured mapping list.

[0053] In different examples, the UE may be provided with a mapping list containing a first mapping and a second mapping in a single configuration. If the UE is not provided with a first mapping in a single configuration mapping list, or if the scheduling authorization for scheduling PUSCH transmissions does not include a first SRI field, the UE may determine that the value of the open-loop power control parameter can be based on the second mapping in the single configuration mapping list.

[0054] When one or more higher-layer parameters p0-PUSCH-set-r16 (e.g., first higher-layer parameter p0-PUSCH-set-r16 and second higher-layer parameter p0-PUSCH-set-r16) are provided to the UE and the scheduling authorization includes an associated open-loop power control parameter set indication field (e.g., in a single configured mapping list, a first open-loop power control parameter set indication field associated with a first mapping, a second open-loop power control parameter set indication field associated with a second mapping, or an open-loop power control parameter set indication field associated with a configured mapping), the UE can determine the value of p0 from various candidate values ​​of p0.

[0055] For example, if the value of the indicator field in the open-loop power control parameter set (e.g., the first open-loop power control parameter set and / or the second open-loop power control parameter set) is “0” or “00”, p0 can be determined from the first open-loop power control parameter in the open-loop power control parameter set (e.g., the set associated with the first mapping and / or the second mapping).

[0056] Alternatively or concurrently, when the open-loop power control parameter set (e.g., the open-loop power control parameter set associated with a first mapping, a second mapping, or a configured mapping in a single configuration mapping list) indicator field is “1” or “01”, p0 can be determined from a first value in the p0-PUSCH-set-r16 (e.g., the first p0-PUSCH-set-r16 and / or the second p0-PUSCH-set-r16) that has the lowest p0-PUSCH-SetID-r16 value.

[0057] Alternatively, when the value of the open-loop power control parameter set (e.g., the open-loop power control parameter set associated with a configuration in a single configuration's mapping list, and / or the first mapping, and / or the second mapping) indication field is "10", p0 can be determined from a second value in p0-PUSCH-set-r16 (e.g., the first p0-PUSCH-set-r16 and / or the second p0-PUSCH set-r16) that has the lowest p0-PUSCH-SetID-r16 value.

[0058] In an alternative embodiment, the UE can determine the PUSCH path loss estimation RS index q based on the configured mapping and SRI field value in the following cases. d Values: (1) The UE is provided with q through the configured mapping. d The various identifiers (e.g., q exists in a mapping list containing a single configuration of a first mapping and / or a second mapping, a mapping of a configuration from the first mapping list, and / or a mapping of a configuration from the second mapping list) d (2) The scheduling authorization for scheduling PUSCH transmissions includes one or more SRI fields (e.g., a first SRI field or a second SRI field). For example, in the case of a single configured mapping, the UE can determine q based on the first mapping set and the associated first SRI field value. d The value of .

[0059] For example, q d The first value can be based on the configured mapping from the first mapping list and the SRI field value in the first SRI field. d The second value can be based on the configured mapping from the second mapping list and the SRI field value in the second SRI field. Alternatively, q d The first value can be based on the mapping of the first configuration and the mapping of the second configuration within a single configuration mapping list.

[0060] In another embodiment, if the UE is not provided with a configured mapping (e.g., a mapping list of a single configuration containing a first mapping and a second mapping, and / or a mapping of a configuration from the first mapping list and / or a mapping of a configuration from the second mapping list does not exist), the UE can determine q based on the identifier of the PUSCH path loss estimation RS index of the mapping to the configuration with identifier = 0. d The value of q. Similarly, if the scheduling grant for scheduling PUSCH transmissions does not include the SRI field, the UE can determine q based on the identifier of the PUSCH path loss estimation RS index mapped to the configuration with identifier = 0. d The value of .

[0061] In one example, if the UE is provided with a second mapping list, and if the scheduling authorization for scheduling PUSCH transmissions does not include a second SRI field, the UE can determine q based on the identifier of the PUSCH path loss estimation RS index (which can be based on the mapping configured in the second mapping list). d The value of .

[0062] In different examples, the UE may be provided with a mapping list containing a first mapping and a second mapping in a single configuration. If the UE is not provided with a second mapping in a single configuration mapping list, or if the scheduling authorization for scheduling PUSCH transmissions does not include a second SRI field, the UE may determine q based on the identifier of the PUSCH path loss estimation RS index of the mapping mapped to the configuration with identifier = 1. d The value of .

[0063] In an alternative embodiment, the UE may determine the value of l based on the configured mapping and the SRI field value in the following cases: (1) the UE is provided with more than one value for l through the configured mapping (e.g., there are various identifiers of l configured by a single configuration mapping list containing a first mapping and a second mapping, a configuration mapping from the first mapping list, and / or a configuration mapping from the second mapping list), and (2) the scheduling authorization for scheduling PUSCH transmissions includes the SRI field (e.g., PUSCH transmissions are scheduled based on the first SRI field and / or the second SRI field). For example, in the case of a single configuration mapping, the UE may determine the value of l based on the first mapping set and the associated first SRI field value.

[0064] If the UE is not provided with a configured mapping (e.g., no configured mapping is provided in the first mapping list or the second mapping list), the UE can determine that the value of the closed-loop power control adjustment l is 0. Similarly, if the scheduling authorization for scheduling PUSCH transmissions does not include the SRI field, the UE can determine that the value of the closed-loop power control adjustment l is 0.

[0065] If the UE is provided with a second mapping list, and the scheduling authorization for scheduling PUSCH transmissions does not include a second SRI field, the UE can determine the value of the closed-loop power control adjustment l based on the mapping configured in the second mapping list.

[0066] When the UE is provided with a mapping list containing a first mapping and a second mapping in a single configuration, and when the second mapping is not configured in the mapping list of the single configuration, the UE can determine that the value of closed-loop power control adjustment l is 1. Similarly, when the UE is provided with a mapping list containing a first mapping and a second mapping in a single configuration, and when the scheduling authorization for scheduling PUSCH transmissions does not include a second SRI field (e.g., associated with the second mapping in the mapping list of the single configuration), the UE can determine that the value of closed-loop power control adjustment l is 1.

[0067] If the UE is also provided with the configured higher-level parameter enablePLRS-UpdateForPUSCH-SRS-r16, then the configured mapping q dThe identifier can be updated by the MAC control element (CE). Figure 5 Example 500 of a PUSCH path loss reference RS updated by MAC CE according to some implementations of this disclosure is shown.

[0068] As shown in the figure, one of the two reserved bits 501 can be used to indicate that the mapping value can be updated by the MAC CE. For example, one bit of the MAC CE can be configured to update the identifier of the first mapping with q in the first set of power control parameters. d The mapping between the index identifiers. Alternatively, a bit of the MAC CE can be configured to update the identifier of the second mapping with q in the second set of power control parameters. d Mapping between index identifiers.

[0069] In one example, when one bit in octet 502 is 0, the value of the mapping between the identifier of the configured mapping and the identifier of the PUSCH path loss estimation RS index can be updated by MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index can be associated with the first SRS resource set.

[0070] When one bit in octet 502 is 1, the value of the mapping between the identifier of the configured mapping and the identifier of the PUSCH path loss estimation RS index can be updated by MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index are associated with the second SRS resource set.

[0071] In different examples, when one bit in octet 503 is 0, the value of the mapping between the identifier of the configured mapping and the identifier of the PUSCH path loss estimation RS index can be updated by MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index are associated with the first SRS resource set.

[0072] When one bit in octet 503 is 1, the value of the mapping between the identifier of the configured mapping and the identifier of the PUSCH path loss estimation RS index is updated by MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index can be associated with a second SRS resource set.

[0073] Figure 6 An example method 600 is shown for configuring a UE for multiple TRP PUSCH repetitions based on a single DCI according to some implementations of this disclosure.

[0074] As shown in 601, the BS can transmit a configuration of a set of power control parameters to the UE. The power control parameters can be those discussed herein. As shown in 602, the UE can also transmit signaling for associating the configured set of power control parameters with a set of uplink data transmission instances. This signaling can be the same as that discussed herein.

[0075] Although various implementations of this solution have been described above, it should be understood that they are presented as examples rather than as limitations. Similarly, various diagrams may depict example architectures or configurations, provided to enable those skilled in the art to understand the example features and functionality of this solution. However, such individuals will understand that the solution is not limited to the example architectures or configurations shown, but can be implemented using various alternative architectures and configurations. Furthermore, as those skilled in the art will understand, one or more features of one implementation may be combined with one or more features of another implementation described herein. Therefore, the breadth and scope of this disclosure should not be limited by any of the illustrative implementations described above.

[0076] It should also be understood that any reference to elements in this document using names such as "first," "second," etc., generally does not restrict the number or order of these elements. Rather, these names may be used as a convenient means of distinguishing two or more elements or instances of a single element. Therefore, references to the first element and the second element do not imply that only two elements can be used, or that the first element must somehow precede the second element.

[0077] Furthermore, those skilled in the art will understand that information and signals can be represented using any of a variety of different methods and techniques. 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.

[0078] Those skilled in the art will further understand that any of the various illustrative logic blocks, modules, processors, components, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, various forms of program or design code in conjunction with instructions (which, for convenience, may be referred to herein as "software" or "software module"), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above in general terms of their functionality. Whether such functionality is implemented as hardware, firmware, software, or a combination of these technologies depends on the specific application and the 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.

[0079] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, modules, devices, components, and circuits described herein can be implemented within or executed by integrated circuits (ICs), which may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, or any combination thereof. Logic blocks, modules, and circuits may also include antennas and / or transceivers for communication 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 DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration for performing the functions described herein.

[0080] If implemented in 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. A computer-readable medium includes both computer storage media and communication media, encompassing any medium capable of transferring a computer program or code from one place to another. A storage medium can be any available medium accessible to a computer. By way of example and not limitation, such a computer-readable medium can 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 desired program code in the form of instructions or data structures and is accessible to a computer.

[0081] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements used to perform the relevant functions described herein. Furthermore, for the purposes of discussion, various modules are described as discrete modules; however, as will be apparent to those skilled in the art, two or more modules can be combined to form a single module that performs the associated functions according to an implementation of this solution.

[0082] Furthermore, memory or other storage devices and communication components may be employed in the implementation of this solution. It should be understood that, for clarity, the above description has referenced different functional units and processors in describing the implementation of this solution. However, it is obvious that any suitable functional distribution among different functional units, processing logic elements, or domains can be used without departing from this solution. For example, functions illustrated as being performed by a separate processing logic element or controller can be performed by the same processing logic element or controller. Therefore, references to specific functional units are merely references to the appropriate manner of providing the described functions and do not represent a strict logical or physical structure or organization.

[0083] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other implementations without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the implementations shown herein, but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method, comprising: The configuration is received by the wireless communication device from the wireless communication node, and the configuration includes a set of multiple power control parameters. The wireless communication device receives a Media Access Control (MAC) control element (CE) from the wireless communication node. The most significant bit (MSB) of the second eight-bit byte of the MAC CE being 0 indicates an update to the mapping between the identifier of the first configuration mapping and the identifier of the first physical uplink shared channel (PUSCH) path loss estimation reference signal index. The identifier of the first configuration mapping and the identifier of the first PUSCH path loss estimation reference signal index are associated with the first sounding reference signal (SRS) resource set. Wherein the MSB bit in the second eight-bit byte of the MAC CE is 1, it indicates that the mapping between the identifier of the updated second configuration mapping and the identifier of the second PUSCH path loss estimation reference signal index is updated, and the identifier of the second configuration mapping and the identifier of the second PUSCH path loss estimation reference signal index are associated with the second SRS resource set. The wireless communication device receives a scheduling authorization from the wireless communication node, wherein the scheduling authorization does not contain a first SRS Resource Indicator (SRI) field or does not contain a second SRI field. as well as The wireless communication device determines a default power control parameter value corresponding to at least one set of a plurality of uplink data transmission instance sets. Each uplink data transmission instance in the aforementioned uplink data transmission instances includes: codebook-based or non-codebook-based PUSCH transmission, and Each uplink data transmission instance in the aforementioned uplink data transmission instance is associated with a corresponding SRS resource set.

2. The wireless communication method according to claim 1, wherein each power control parameter set in the power control parameter set includes at least one of the following: target received power, fractional path loss compensation ratio, PUSCH path loss estimation reference signal index, or closed-loop power control adjustment index.

3. The wireless communication method according to claim 1, wherein the wireless communication device determines the default power control parameter value corresponding to the plurality of uplink data transmission instance sets, including: When the first SRI field is not present in the scheduling authorization, the wireless communication device determines that the default power control parameter value corresponds to the first set in the uplink data transmission instance set.

4. The wireless communication method according to claim 3, wherein the default power control parameter value corresponding to the first set in the uplink data transmission instance set includes at least one of the following: The target received power identified from the first open-loop power control parameter in the open-loop power control parameter set; The ratio of fractional path loss compensation identified from the first open-loop power control parameters in the set of open-loop power control parameters; or A closed-loop power control regulation index with a value of 0.

5. The wireless communication method according to claim 1, wherein determining the default power control parameter value corresponding to the plurality of uplink data transmission instance sets by the wireless communication device includes: When the second SRI field is not present in the scheduling authorization, the wireless communication device determines that the default power control parameter value corresponds to the second set in the uplink data transmission instance set.

6. The wireless communication method according to claim 5, wherein the default power control parameter value corresponding to the second set in the uplink data transmission instance set includes at least one of the following: The target received power identified from the second open-loop power control parameter in the open-loop power control parameter set; The fractional path loss compensation ratio identified from the second open-loop power control parameters in the set of open-loop power control parameters; or A closed-loop power control regulation index with a value of 1.

7. The wireless communication method according to claim 1, wherein the configuration is received via Radio Resource Control (RRC) signaling.

8. The wireless communication method according to claim 1, wherein the scheduling authorization is received in downlink control information (DCI) format.

9. A wireless communication device, comprising: At least one processor is configured as follows: The configuration, which includes a set of multiple power control parameters, is received from the wireless communication node via a receiver. The Media Access Control (MAC) element (CE) is received from the wireless communication node via the receiver. The most significant bit (MSB) of the second eight-bit byte of the MAC CE being 0 indicates an update to the mapping between the identifier of the first configuration mapping and the identifier of the first physical uplink shared channel (PUSCH) path loss estimation reference signal index. The identifier of the first configuration mapping and the identifier of the first PUSCH path loss estimation reference signal index are associated with the first sounding reference signal (SRS) resource set. Wherein the MSB bit in the second eight-bit byte of the MAC CE is 1, it indicates that the mapping between the identifier of the updated second configuration mapping and the identifier of the second PUSCH path loss estimation reference signal index is updated, and the identifier of the second configuration mapping and the identifier of the second PUSCH path loss estimation reference signal index are associated with the second SRS resource set. The scheduling authorization is received from the wireless communication node via the receiver, wherein the scheduling authorization does not contain a first SRS Resource Indicator (SRI) field or does not contain a second SRI field. as well as Determine the default power control parameter value corresponding to at least one of the multiple sets of uplink data transmission instance sets. Each uplink data transmission instance in the aforementioned uplink data transmission instances includes: codebook-based or non-codebook-based PUSCH transmission, and Each uplink data transmission instance in the aforementioned uplink data transmission instance is associated with a corresponding SRS resource set.

10. The wireless communication device of claim 9, wherein each power control parameter set in the power control parameter set includes at least one of the following: target received power, fractional path loss compensation ratio, PUSCH path loss estimation reference signal index, or closed-loop power control adjustment index.

11. The wireless communication device of claim 9, wherein determining the default power control parameter value corresponding to the plurality of uplink data transmission instance sets includes: When the first SRI field is not present in the scheduling authorization, the default power control parameter value is determined to correspond to the first set in the uplink data transmission instance set.

12. The wireless communication device of claim 11, wherein the default power control parameter value corresponding to the first set in the set of uplink data transmission instances includes at least one of the following: The target received power identified from the first open-loop power control parameter in the open-loop power control parameter set; The ratio of fractional path loss compensation identified from the first open-loop power control parameters in the set of open-loop power control parameters; or A closed-loop power control regulation index with a value of 0.

13. The wireless communication device of claim 9, wherein determining the default power control parameter value corresponding to the plurality of uplink data transmission instance sets includes: When the second SRI field is not present in the scheduling authorization, the default power control parameter value is determined to correspond to the second set in the uplink data transmission instance set.

14. The wireless communication device of claim 13, wherein the default power control parameter value corresponding to the second set in the set of uplink data transmission instances includes at least one of the following: The target received power identified from the second open-loop power control parameter in the open-loop power control parameter set; The fractional path loss compensation ratio identified from the second open-loop power control parameters in the set of open-loop power control parameters; or A closed-loop power control regulation index with a value of 1.

15. The wireless communication device of claim 9, wherein the configuration is received via Radio Resource Control (RRC) signaling.

16. The wireless communication device of claim 9, wherein the scheduling authorization is received in downlink control information (DCI) format.

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