SYSTEMS AND METHODS FOR POWER CONTROL IN UPLINK TRANSMISSIONS - Patent application

Abstract

A system and method for wireless communication is disclosed herein. One embodiment includes a wireless communication device that receives a configuration comprising a plurality of sets of power control parameters from a wireless communication node, and receives signaling from the wireless communication node for associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances. In one embodiment, each of the sets of power control parameters comprises at least one of a target received power, a fractional path loss compensation ratio, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed loop power control adjustment index.

Description

[Technical Field]

[0001] The present disclosure relates generally to wireless communications, and more particularly to systems and methods for physical uplink shared channel (PUSCH) transmit power control. [Background technology]

[0002] Joint transmission or reception is the transmission or reception of multiple signals from multiple facilities that are transmitted or received simultaneously. Joint transmission or reception at multiple transmit and receive points (multi-TRPs) plays an important role in increasing the throughput of wireless communications. Both Long Term Evolution-Advanced (LTE-A) and New Radio Access Technology (NR) support multi-transmit-receive node transmission. Summary of the Invention [Means for solving the problem]

[0003] The exemplary implementations disclosed herein are directed to solving problems associated with one or more of the problems presented in the prior art and to providing additional features that will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings. According to various implementations, exemplary systems, methods, devices, and computer program products are disclosed herein. It will be understood, however, that these implementations are presented by way of example, and not limitation, and that various modifications to the disclosed implementations may be made while remaining within the scope of the present disclosure, as will be apparent to those skilled in the art upon perusal of this disclosure.

[0004] In one implementation, a method performed by a wireless communication device includes 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 for associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances.

[0005] In another implementation, a method performed by a wireless communication device includes each of a set of power control parameters comprising at least one of a target received power, a fractional path loss compensation ratio, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index.

[0006] In one implementation, a method performed by a wireless communication node includes transmitting, to a wireless communication device, a configuration comprising a plurality of sets of power control parameters, and transmitting, to the wireless communication device, signaling for associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances.

[0007] In another implementation, a method performed by a wireless communication node includes each of a set of power control parameters comprising at least one of a target received power, a fractional path loss compensation ratio, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index.

[0008] These and other aspects and their implementations are described in more detail in the drawings, description, and claims. The present invention provides, for example, the following. (Item 1) 1. A wireless communication method, the method comprising: receiving, by a wireless communication device, a configuration from a wireless communication node, the configuration comprising a plurality of sets of power control parameters; receiving, by the wireless communication device, signaling from the wireless communication node for associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances; A method comprising: (Item 2) Item 1. The method of item 1, wherein each of the sets of power control parameters comprises at least one of a target received power, a fractional path loss compensation ratio, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index. (Item 3) Item 1, wherein when the signaling is a configured grant without a first sounding reference signal resource indicator (SRI) field or when the configuration does not configure a first mapping in a single mapping list, the respective values ​​of one of the set of power control parameters corresponding to a first one of the set of uplink data transmission instances are each a default value. (Item 4) The default value is: a target received power identified from a first open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the first open loop power control parameter in the set of open loop power control parameters; A PUSCH path loss estimation reference signal index mapped to a configured mapping in the single mapping list with identity=0; or Closed Loop Power Control Adjustment Index with Value = 0 Item 4. The method of item 3, comprising at least one of: (Item 5) Item 4. The method of item 3, wherein the signaling is a configured grant including a first open-loop power control parameter set indication field, the first open-loop power control parameter set indication field indicating up to two candidate values ​​of target received power. (Item 6) Item 1. The method of item 1, wherein when the signaling is a configured grant without a second SRI field or when the configuration does not configure a second mapping in a single mapping list, the respective values ​​of one of the sets of power control parameters corresponding to a second one of the sets of uplink data transmission instances are each a default value. (Item 7) The default value is: a target received power identified from a second open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the second open loop power control parameter in the set of open loop power control parameters; A PUSCH path loss estimation reference signal index mapped to a configured mapping in the single mapping list with identity=1; or Closed Loop Power Control Adjustment Index with value = 1 Item 7. The method of item 6, comprising at least one of: (Item 8) 7. The method of claim 6, wherein the signaling is a configured grant including a second open-loop power control parameter set indication field, the second open-loop power control parameter set indication field indicating up to two candidate values ​​for target received power. (Item 9) Item 1. The method of item 1, wherein when the signaling is a configured grant without a second SRI field and the configuration provides a second mapping list, each of the respective values ​​of one of the set of power control parameters corresponding to a second one of the set of uplink data transmission instances is a default value that is associated with a configured mapping in the second mapping list. (Item 10) The default value is: a target received power identified from an open loop power control parameter in an open loop power control parameter set, which is determined from the configured mapping in the second mapping list; a fractional path loss compensation ratio identified from the open loop power control parameters in the open loop power control parameter set, which is determined from the configured mapping in the second mapping list; a PUSCH path loss estimation reference signal index determined from the configured mapping in the second mapping list; or a closed-loop power control adjustment index determined from the configured mapping in the second mapping list. Item 10. The method of item 9, comprising at least one of: (Item 11) 10. The method of claim 9, wherein the signaling is a configured grant including a second open-loop power control parameter set indication field, the second open-loop power control parameter set indication field indicating up to two candidate values ​​of target received power. (Item 12) 10. The method of claim 9, wherein the configured mapping is the first or last element of the second mapping list. (Item 13) The signaling is a MAC Control Element (CE), and one bit of the MAC CE is: a mapping between an identity of a first mapping and an identity of a PUSCH path loss estimation reference signal index in a first one of the sets of power control parameters; a mapping between an identity of a second mapping and an identity of a PUSCH path loss estimation reference signal index in a second one of the sets of power control parameters; Item 1. The method according to item 1, configured to update the (Item 14) Item 1. The method of item 1, wherein the configuration is received through radio resource control (RRC) signaling. (Item 15) Item 1, wherein the signaling is received through at least one of a downlink control information (DCI) format, a configured grant, or a dynamically configured grant. (Item 16) Item 1, wherein each of the uplink data transmission instances includes a codebook-based or non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission. (Item 17) Item 4. The method of item 3, wherein the first mapping is configured to associate a first SRI field with the set of power control parameters corresponding to the first set of uplink data transmission instances. (Item 18) 7. The method of claim 6, wherein the second mapping is configured to associate the second SRI field with the set of power control parameters corresponding to the second set of uplink data transmission instances. (Item 19) 1. A wireless communication method, the method comprising: transmitting, by the wireless communication node, to the wireless communication device, a configuration comprising a plurality of sets of power control parameters; transmitting, by the wireless communication node, signaling to the wireless communication device for associating the plurality of sets of power control parameters with a plurality of sets of uplink data transmission instances; A method comprising: (Item 20) 20. A wireless communication device comprising a processor and a memory, the processor configured to read code from the memory and implement a method according to any one of items 1-19. (Item 21) 20. A computer program product comprising computer-readable program medium code stored thereon, the code, when executed by a processor, causing the processor to implement the method of any of items 1-19. [Brief explanation of the drawings]

[0009] Various exemplary implementations of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely depict exemplary implementations of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the scope, range, or applicability of the present solution. It should be noted that for clarity and ease of illustration, the drawings are not necessarily drawn to scale.

[0010] [Figure 1] FIG. 1 illustrates an example cellular communication network in which the techniques and other aspects disclosed herein may be implemented in accordance with certain implementations of the present disclosure.

[0011] [Figure 2] FIG. 2 illustrates a block diagram of an example base station and user equipment device in accordance with some implementations of the present disclosure.

[0012] [Figure 3] FIG. 3 illustrates an example method for a UE configured for single DCI-based multi-TRP PUSCH repetition in accordance with some implementations of the present disclosure.

[0013] [Figure 4] FIG. 4 illustrates a block diagram of single DCI-based multi-TRP PUSCH operation according to some implementations of the present disclosure.

[0014] [Figure 5] FIG. 5 illustrates an example of a PUSCH path loss RS updated by a MAC CE according to some implementations of the present disclosure.

[0015] [Figure 6] FIG. 6 illustrates an example method of a BS configuring a UE for single DCI-based multi-TRP PUSCH repetition in accordance with some implementations of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0016] Various exemplary implementations of the present solution are described below with reference to the accompanying figures to enable those skilled in the art to make and use the solution. As will be apparent to those skilled in the art, after reading this disclosure, various changes or modifications of the examples described herein can be made without departing from the scope of the solution. Thus, the present solution is not limited to the exemplary implementations and applications described and illustrated herein. In addition, any specific order or hierarchy of steps in the methods disclosed herein is merely an example approach. Based on design preferences, the specific order or hierarchy of steps in a disclosed method or process can be rearranged while remaining within the scope of the solution. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and that the solution is not limited to the specific order or hierarchy presented, unless explicitly stated otherwise.

[0017] 1 illustrates an example wireless communication network and / or system 100 in which the techniques disclosed herein may be implemented in accordance with certain implementations of the present disclosure. 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, and is referred to herein as “network 100.” Such example network 100 includes a base station 102 (hereinafter “BS 102”), user equipment devices 104 (hereinafter “UE 104”) that may communicate with each other via communication links 110 (e.g., wireless communication channels), and clusters of cells 126, 130, 132, 134, 136, 138, and 140 that overlay a geographic area 101. In FIG. 1, BS 102 and UE 104 are contained within respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating in its allocated bandwidth and providing sufficient wireless coverage to its intended users.

[0018] For example, the BS 102 may operate with an allocated channel transmission bandwidth to provide sufficient coverage to the UE 104. The BS 102 and the UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, the BS 102 and the UE 104 are generally described herein as non-limiting examples of “communication nodes” that may practice the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communication according to various implementations of the present solutions.

[0019] 2 illustrates a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals, e.g., OFDM / OFDMA signals, in accordance with some implementations of the present solution. System 200 may include components and elements configured to support known or conventional operational features that need not be described in detail herein. In one illustrative implementation, system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment, such as wireless communication environment 100 of FIG. 1, as described above.

[0020] The system 200 generally includes a base station 202 (hereinafter "BS 202") and a user equipment device 204 (hereinafter "UE 204"). The 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, each of which is coupled and interconnected, as needed, via a data communication bus 220. The UE 204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which is coupled and interconnected, as needed, via a data communication bus 240. The BS 202 communicates with the UE 204 via a communication channel 250, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0021] As will be understood by those skilled in the art, system 200 may further include any number of modules other than those shown in FIG. 2 . Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the implementations disclosed herein may 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 described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend on the particular application and design constraints imposed on the overall system. Those skilled in the art, familiar with the concepts described herein, will be able to implement such functionality in a manner suitable for each particular application, and such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0022] According to some embodiments, the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230, where the transceiver 230 includes a radio frequency (RF) transmitter and an RF receiver, each of which includes circuitry coupled to an 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, the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210, where the transceiver 210 includes an RF transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time-duplex manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time, whereby the downlink transmitter is coupled to the downlink antenna 212 at the same time Uplink receiver circuitry is coupled to uplink antenna 232 for receiving transmissions over wireless transmission link 250. In some implementations, there is close time synchronization, with a minimum guard time between changes in duplex direction.

[0023] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with suitably configured RF antenna arrangements 212 / 232 that can support particular wireless communication protocols and modulation schemes. In some illustrative implementations, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and the emerging 5G standard. However, it should be understood that the present disclosure is not necessarily limited in application to particular standards and associated protocols. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0024] According to various implementations, the BS 202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some implementations, the UE 204 may be embodied in various types of user devices, such as a mobile phone, a smartphone, a personal digital assistant (PDA), a tablet, a laptop computer, a wearable computing device, etc. The processor modules 214 and 236 may be implemented or realized with a general-purpose processor, a content-addressable memory, a digital signal processor, an application-specific integrated circuit, a 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. As such, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0025] Furthermore, the steps of a method or algorithm described in connection with the implementations disclosed herein may be embodied in hardware, firmware, software modules executed directly by processor modules 214 and 236, or any practical combination thereof. Memory modules 216 and 234 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to processor modules 210 and 230, respectively, such that processor modules 210 and 230 may read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 may be integrated within their respective processor modules 210 and 230. In some implementations, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions executed by respective processor modules 210 and 230. Each of the memory modules 216 and 234 may include non-volatile memory for storing instructions to be executed by the respective processor modules 210 and 230 .

[0026] The network communications module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bidirectional communications between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communications module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, without limitation, the network communications module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 may communicate with conventional Ethernet-based computer networks. As such, the network communications 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 specified operations or functions, the terms “configured for,” “configured to,” and conjugations thereof, refer to devices, components, circuits, structures, machines, signals, etc. that are physically constructed, programmed, formatted, and / or arranged to perform the specified operations or functions.

[0027] New Radio Technology (NR) is a new radio access technology developed by the Third Generation Partnership Project (3GPP®) as a standard for the air interface of wireless networks. Frequencies available for use in NR systems include a first frequency range (FR1) and a second frequency range (FR2). Frequencies in FR1 include frequencies below 6 GHz, and frequencies in FR2 include frequencies in the millimeter wavelength range (e.g., above 6 GHz).

[0028] 5G NR includes multiple-input multiple-output (MIMO) features that facilitate the use of multiple antenna elements at a base station (BS). One MIMO feature is support for multi-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 decreases when the link between the UE and the TRP is affected by an outage. The BS may transmit data to the UE using multiple TRPs to improve transmission performance. The UE may use the same information for repeated transmissions across multiple slots. That is, each transmission is a PUSCH transmission / repetition for a single TRP, so it uses at least the same spatial relationship, precoder, and / or power control parameters. The robustness and reliability of PUSCH transmissions may be improved by a single downlink control information (DCI)-based multi-TRP PUSCH repetition.

[0029] FIG. 3 illustrates an example method 300 for a UE configured for single DCI-based multi-TRP PUSCH repetition in accordance with some implementations of the present disclosure.

[0030] As shown in 301, the UE may receive a configuration of a set of power control parameters from the BS. The power control parameters may include at least one of a target received power, a fractional path loss compensation ratio, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index. The configured set of power control parameters may be received through radio resource control (RRC) signaling.

[0031] As shown in 302, the UE may also receive signaling from the BS associating the configured set of power control parameters with a set of uplink data transmission instances. For example, there may be a first mapping list and a second mapping list, each used to associate two SRI indications with power control parameters of two PUSCH transmission sets. The UE may be scheduled to transmit multiple PUSCH transmissions, and each PUSCH transmission instance may be associated with an SRS resource set. The SRS resource set may be configured with the same higher layer parameter usage in an SRS-ResourceSet. The SRS-ResourceSet may be set to "codebook" or "nonCodebook." That is, each uplink data transmission instance may be a codebook-based or non-codebook-based PUSCH transmission.

[0032] Additionally or alternatively, a first configured mapping and a second configured mapping may be present in a single list of configured mappings. The two mappings in the single list of configured mappings may be used to associate an SRI indication with power control parameters for two PUSCH transmission sets, respectively. The first mapping and the second mapping in the single list of configured mappings may be the first and second elements in the single configured mapping, respectively. Additionally or alternatively, the first mapping and the second mapping in the single configured mapping may be the first elements in the first and second parts of the configured mapping list, respectively.

[0033] 4 illustrates a block diagram 400 of single DCI-based multi-TRP PUSCH operation according to some implementations of the present disclosure. As shown, a first PUSCH 401 (PUSCH0) is transmitted 402 to a first TRP 403 (TRP0), and a second PUSCH 404 (PUSCH1) is transmitted 405 to a second TRP 406 (TRP1). The first PUSCH 402 transmission may use a first sounding resource set (SRS) (e.g., SRS set 0), and the second PUSCH 405 transmission may use a second SRS set (e.g., SRS set 1).

[0034] Due to different channel conditions of the link between the UE and multiple TRPs (e.g., TRP0 403 and TRP1 406), the power of different PUSCH transmissions may be independent for each TRP. As discussed herein, RRC signaling may be configured for each TRP such that the power control parameters for each TRP may be independent.

[0035] The PUSCH transmission sets (e.g., PUSCH 401 and PUSCH 404) may be distinguished in various ways: (1) a first PUSCH transmission set may be associated with a first SRS resource set using non-codebook-based transmission, while a second PUSCH transmission set may be associated with a different SRS resource set using non-codebook-based transmission; (2) a first PUSCH transmission set may correspond to a first transmission opportunity, while a second PUSCH transmission set may correspond to a second transmission opportunity; (3) a first PUSCH transmission set may correspond to a first frequency hop, while a second PUSCH transmission set may correspond to a second frequency hop; and (4) a first PUSCH transmission set may correspond to a second frequency hop. (5) the first PUSCH transmission set may include PUSCH transmissions in a set of PUSCH transmissions with odd ordering, while the second PUSCH transmission set may include PUSCH transmissions in a set of PUSCH transmissions with even ordering; and (6) the first PUSCH transmission set may include some PUSCH transmissions (e.g., the first, second, fifth, and sixth PUSCH transmissions), while the second PUSCH transmission set may include other PUSCH transmissions (e.g., the third, fourth, seventh, and eighth PUSCH transmissions).

[0036] A single DCI-based multi-TRP PUSCH transmission may be configured such that several (e.g., two) SRS resource sets are configured with the same higher layer parameter usage in the SRS-ResourceSet set to "codebook" or "nonCodebook." Several (e.g., two) SRI indications in the DCI field may be used for SRS resource indication of different SRS resource sets. In one configuration, the transmission rank and the number of SRS ports may be the same for each codebook-based or non-codebook-based PUSCH transmission.

[0037] A UE may transmit uplink data according to codebook-based or non-codebook-based PUSCH transmission. The power control mechanism for codebook-based and non-codebook-based PUSCH transmission may include a BS configuring UE-specific power control parameters for PUSCH transmission. That is, the BS may configure a higher layer parameter PUSCH-PowerControl. The power control parameters may include at least one of: (1) an open-loop power control parameter set (e.g., a higher layer parameter p0-AlphaSets); (2) a PUSCH path loss estimation reference signal (RS) index set (e.g., a higher layer parameter pathlossReferenceRSToAddModList); and (3) a mapping list (e.g., a higher layer parameter SRI-PUSCH-MappingToAddModList).

[0038] The open-loop power control parameter set may include at least one of the open-loop power control parameters (e.g., higher layer parameter p0-PUSCH-AlphaSet), which may include at least a target received power (denoted as p0) or a fractional path loss compensation ratio (denoted as α).

[0039] The PUSCH path loss estimation RS index set may include at least one of the PUSCH path loss estimation RS indexes (e.g., a higher layer parameter PUSCH-PathlossReferenceRS). d ) may include an RS resource index corresponding to at least one of: (1) a synchronization signal (SS) / physical broadcast channel (PBCH) block index, or (2) a non-zero power (NZP) channel status information (CSI) RS resource index.

[0040] The mapping list (e.g., a first mapping list, a second mapping list, or a configured mapping list including the first mapping and the 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 power control parameters, such as (1) an identity of an open-loop power control parameter (e.g., a higher layer parameter SRI-P0-PUSCH-AlphaSetId), (2) an identity 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 l (e.g., a higher layer parameter SRI-PUSCH-CloseLoopIndex). The mapping list may map the SRI indication with one or more power control parameters. In an example, the first mapping list may map a first SRI field with a set of power control parameters corresponding to a first set of uplink data transmission instances. Additionally, a second mapping list may map the second SRI field with a set of power control parameters corresponding to a second set of uplink data transmission instances.

[0041] When a UE is scheduled to transmit a PUSCH transmission, power control parameters may be determined. The scheduling grant may include a downlink control information (DCI) format, a configured grant, and / or a dynamically configured grant. For a first PUSCH transmission set, the UE may determine power control parameters for each PUSCH transmission based on a mapping from a first mapping list.

[0042] In one embodiment, when (1) the UE is provided with different identities of open-loop power control parameters by configured mappings (e.g., there is a single configured mapping list including a first mapping configuration and a second mapping configuration, different identities of open-loop power control parameters configured by mappings configured from the first mapping list, and / or mappings configured from the second mapping list), and (2) the scheduling grant scheduling the PUSCH transmission includes one or more SRS resource indicator (SRI) fields (e.g., the PUSCH transmission is scheduled according to the first SRI field and / or the second SRI field), the UE may determine values ​​of the open-loop power control parameters based on the configured mappings and the SRI field values.

[0043] For example, the first value of the open-loop power control parameter may be based on a mapping configured from a first mapping list and an SRI field value in a first SRI field associated with the mapping configured from the first mapping list. The second value of the open-loop parameter may be based on a mapping configured from a second mapping list and an SRI field value in a second SRI field associated with the mapping configured from the second mapping list. Additionally or alternatively, the first value of the open-loop power control parameter may be based on the first mapping and / or the second mapping included in a single configured list of mappings.

[0044] If the scheduling grant also includes an open loop power control parameter set indication field and the value in the field is '1', the UE may determine the value of p0 from the value in the configured higher layer parameter p0-PUSCH-set-r16 with the p0-PUSCH-SetIf-r16 value mapped to the SRI field.

[0045] In one example, the first open-loop parameter set indication field may be '1'. Thus, the UE may determine p0 from the first value in the first higher layer parameter P0-PUSCH-set-r16 with the p0-PUSCH-SetId-r16 value mapped to the first SRI field value. Similarly, the second open-loop power control parameter set indication field may be '1'. Thus, the UE may determine p0 from the first value in the second higher layer parameter P0-PUSCH-set-r16 with the p0-PUSCH-SetId-r16 value mapped to the second SRI field value.

[0046] In an embodiment, if the UE is not provided with a configured mapping (e.g., a first mapping or a second mapping in a single list of configured mappings), the UE may determine values ​​of open-loop power control parameters based on first or second open-loop power control parameters in an open-loop power control parameter set (e.g., a default set). The default open-loop power control parameters may be associated with the single list of configured mappings. Additionally or alternatively, the UE may determine default values ​​for power control parameter values ​​corresponding to the first or second set of uplink data transmission instances.

[0047] Similarly, if the scheduling grant scheduling the PUSCH transmission does not include the first or second SRI field, the UE may determine the value of the open-loop power control parameter based on the first or second open-loop power control parameter in the open-loop power control parameter set.

[0048] The default value may be (1) a target received power identified from an open-loop power control parameter in the open-loop power control parameter set (e.g., identified in the first open-loop power control parameter or the second open-loop power control parameter), (2) a fractional path loss compensation ratio identified from an open-loop power control parameter in the open-loop power control parameter set (e.g., identified in the first open-loop power control parameter or the second open-loop power control parameter), or (3) a PUSCH path loss estimation RS index q that is mapped to a mapping list with an identification of 0 (in the absence of a first mapping and / or a scheduling grant) or 1 (in the absence of a second mapping and / or a scheduling grant). d , and (4) a closed-loop power control adjustment index l with a value of 0 (when there is no first mapping and / or scheduling grant) or 1 (when there is no second mapping and / or scheduling grant).

[0049] In an alternative embodiment, if the UE is provided with the second mapping list but is not provided with second SRI fields of configured mappings included in the second mapping list, the UE may use default values ​​to determine power control parameter values ​​corresponding to the second set of uplink data transmission instances. The default values ​​may be associated with the configured mappings in the second mapping list.

[0050] The default value may be (1) a target received power identified from an open loop power control parameter in an open loop power control parameter set of a configured mapping in the second mapping list, (2) a fractional path loss compensation ratio identified from an open loop power control parameter in an open loop power control parameter set of a configured mapping in the second mapping list, and (3) a PUSCH path loss estimation RS index q determined from a configured mapping in the second mapping list. d, and (4) a closed-loop power control adjustment index l determined from the configured mapping in the second mapping list.

[0051] In an example, a UE may be provided with different identities of configured open-loop power control parameters according to configured mappings (e.g., a first mapping or a second mapping in a single list of configured mappings). The UE may receive a scheduling grant scheduling a first PUSCH transmission using a first SRI field and a second PUSCH transmission without an associated second SRI field. The UE may determine values ​​of the open-loop power control parameters based on the first mapping in the single list of configured mappings.

[0052] In a different example, the UE may be provided with a single list of configured mappings that includes a first mapping and a second mapping. If the UE is not provided with the first mapping in the single list of configured mappings, or if the scheduling grant that schedules the PUSCH transmission does not include the first SRI field, the UE may determine that the value of the open-loop power control parameter may be based on the second mapping in the single list of configured mappings.

[0053] If one or more higher layer parameters p0-PUSCH-set-r16 (e.g., a first higher layer parameter p0-PUSCH-set-r16 and a second higher layer parameter p0-PUSCH-set-r16) are provided to the UE and the scheduling grant includes an associated open-loop power control parameter set indication field (e.g., 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 configured mappings in a single list of configured mappings), the UE may determine the value of p0 from various candidate values ​​of p0.

[0054] For example, if the value of the open-loop power control parameter set (e.g., first open-loop power control parameter set and / or second open-loop power control parameter set) indication field is “0” or “00”, p0 may 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 and / or second mapping).

[0055] Additionally or alternatively, if the open-loop power control parameter set (e.g., the open-loop power control parameter set associated with the first mapping, the second mapping, or a configured mapping in a single list of configured mappings) indication field is '1' or '01', p0 may be determined from the first value in the p0-PUSCH-set-r16 (e.g., the first and / or second p0-PUSCH-set-r16) with the lowest p0-PUSCH-SetID-r16 value.

[0056] Additionally or alternatively, if the value of the open-loop power control parameter set (e.g., the open-loop power control parameter set associated with a configured mapping in a list of a single configured mapping, and / or the first mapping, and / or the second mapping) indication field is “10”, p0 may be determined from the second value in the p0-PUSCH-set-r16 (e.g., the first p0-PUSCH-set-r16 and / or the second p0-PUSCH-set-r16) with the lowest p0-PUSCH-SetID-r16 value.

[0057] In an alternative embodiment, (1) the UE receives q d provided with various identifying information (e.g., a single configured list of mappings including a first mapping and a second mapping, a configured list of mappings from the first mapping list, and / or a configured list of mappings from the second mapping list, d(2) when the scheduling grant for scheduling the PUSCH transmission includes one or more SRI fields (e.g., a first or second SRI field), the UE determines a PUSCH path loss estimation RS index q based on the configured mapping and the SRI field values. d For example, in the case of a single configured mapping, the UE may determine the value of q based on the first mapping set and the first SRI field value associated with it. d The value of may be determined.

[0058] For example, q d The first value of may be based on a mapping configured from the first mapping list and an SRI field value in the first SRI field. d The second value of q may be based on a mapping configured from the second mapping list and the SRI field value in the second SRI field. d The first value of may be based on a first configured mapping and a second configured mapping in a single list of configured mappings.

[0059] In another embodiment, if the UE is not provided with a configured mapping (e.g., a single configured mapping list including a first mapping and a second mapping, and / or no mappings configured from the first mapping list and / or no mappings configured from the second mapping list), the UE may determine q based on the identity of a PUSCH path loss estimation RS index that is mapped to a configured mapping with identity=0. d Similarly, if the scheduling grant for scheduling the PUSCH transmission does not include an SRI field, the UE may determine the value of q based on the identity of the PUSCH path loss estimation RS index that is mapped to the configured mapping with identity=0. d The value of may be determined.

[0060] In one example, when the UE is provided with a second mapping list, and when the scheduling grant for scheduling the PUSCH transmission does not include a second SRI field, the UE may determine, based on an identity of the PUSCH path loss estimation RS index (which may be based on the configured mapping in the second mapping list), q d The value of may be determined.

[0061] In another example, the UE may be provided with a single configured mapping list including the first mapping and the second mapping. If the UE is not provided with the second mapping in the single configured mapping list, or if the scheduling grant for scheduling the PUSCH transmission does not include a second SRI field, the UE may determine q based on the identity of the PUSCH path loss estimation RS index mapped to the configured mapping with identity=1. d The value of may be determined.

[0062] In an alternative embodiment, when (1) the UE is provided with two or more values ​​of l by configured mappings (e.g., there are different identities of l configured by a single configured mapping list including a first mapping and a second mapping, a mapping configured from the first mapping list, and / or a mapping configured from the second mapping list), and (2) the scheduling grant scheduling the PUSCH transmission includes an SRI field (e.g., the PUSCH transmission is scheduled according to the first SRI field and / or the second SRI field), the UE may determine the value of l based on the configured mappings and the SRI field value. For example, in the case of a single configured mapping, the UE may determine the value of l based on the first mapping set and the associated first SRI field value.

[0063] If the UE is not provided with a configured mapping (e.g., the configured mapping is not in the first or second mapping list), the UE may determine that the value of the closed-loop power control adjustment l is 0. Similarly, if the scheduling grant scheduling the PUSCH transmission does not include an SRI field, the UE may determine that the value of the closed-loop power control adjustment l is 0.

[0064] If the UE is provided with a second mapping list and if the scheduling grant scheduling the PUSCH transmission does not include a second SRI field, the UE may determine the value of the closed-loop power control adjustment l based on the configured mapping in the second mapping list.

[0065] If the UE is provided with a single list of configured mappings that includes a first mapping and a second mapping, and if the second mapping is not configured in the single list of configured mappings, the UE may determine that the value of the closed-loop power control adjustment l is 1. Similarly, if the UE is provided with a single list of configured mappings that includes a first mapping and a second mapping, and if the scheduling grant scheduling the PUSCH transmission does not include a second SRI field (e.g., associated with the second mapping in the single list of configured mappings), the UE may determine that the value of the closed-loop power control adjustment l is 1.

[0066] If the UE is also provided with the configured higher layer parameter enablePLRS-UpdateForPUSCH-SRS-r16, then the q d The identification information of may be updated by a MAC Control Element (CE). Figure 5 illustrates an example 500 of a PUSCH path loss reference RS updated by a MAC CE according to some implementations of the present disclosure.

[0067] As shown, one bit of the two reserved bits 501 may be used to indicate while the mapping value may be updated by the MAC CE. For example, one bit of the MAC CE may be used to indicate the identity of the first mapping and the q value in the first of the set of power control parameters. d Additionally or alternatively, one bit of the MAC CE may be configured to update the mapping between the identification of the second mapping and the q index in the second one of the sets of power control parameters. d The method may be configured to update the mapping between the index identification information.

[0068] In an example, when one bit in octet 502 is 0, the value of the mapping between the identity of the configured mapping and the identity of the PUSCH path loss estimation RS index may be updated by the MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index may be associated with the first SRS resource set.

[0069] When one bit in octet 502 is 1, the value of the mapping between the identity of the configured mapping and the identity of the PUSCH path loss estimation RS index may be updated by the MAC CE, and both the configured mapping and the PUSCH path loss estimation RS index are associated with the second SRS resource set.

[0070] In a different example, when one bit in octet 503 is 0, the value of the mapping between the identity of the configured mapping and the identity of the PUSCH path loss estimation RS index may be updated by the MAC CE, where both the configured mapping and the PUSCH path loss estimation RS index are associated with the first SRS resource set.

[0071] When one bit in octet 503 is 1, the value of the mapping between the identity of the configured mapping and the identity of the PUSCH path loss estimation RS index is updated by the MAC CE. Both the configured mapping and the PUSCH path loss estimation RS index may be associated with a second SRS resource set.

[0072] FIG. 6 illustrates an example method 600 of a BS configuring a UE for single DCI-based multi-TRP PUSCH repetition according to some implementations of the present disclosure.

[0073] As shown in 601, the BS may transmit a configuration of a set of power control parameters to the UE. The power control parameters may be power control parameters as discussed herein. As shown in 602, the UE may transmit signaling to associate the configured set of power control parameters with a set of uplink data transmission instances. The signaling may be the same signaling as discussed herein.

[0074] While various implementations of the present solution have been described above, it should be understood that they are presented by way of example only, and not by way of limitation. Similarly, various diagrams may depict example architectures or configurations, which are provided to enable those skilled in the art to understand example features and functionality of the present solution. However, such skilled artisans will understand that the present solution is not limited to the example architectures or configurations shown, but can be implemented using a variety of alternative architectures and configurations. In addition, as will be understood by those skilled in the art, one or more features of one implementation can be combined with one or more features of another implementation described herein. Thus, the scope and scope of the present disclosure should not be limited by any of the example implementations described above.

[0075] It should also be understood that any reference to elements herein using a designation such as "first," "second," etc., does not generally limit the quantity or order of those elements. Rather, these designations may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some manner.

[0076] Additionally, those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by, for example, voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0077] Those skilled in the art will further appreciate that any of the various illustrative logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design code incorporating instructions (which may be conveniently referred to herein as “software” or “software modules”), or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware, and software, the various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these techniques, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.

[0078] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, modules, devices, components, and circuits described herein can be implemented in or 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. The logic blocks, modules, and circuits can further include antennas and / or transceivers to communicate with various components within a network or device. A general-purpose processor can be a microprocessor, but alternatively, the processor can be any conventional processor, controller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration for performing the functions described herein.

[0079] When implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that can enable a computer program or code to be transferred from one place to another. A storage medium can be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic 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 that can be accessed by a computer.

[0080] As used herein, the term "module," as used herein, refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purposes of discussion, various modules are described as discrete modules; however, as would be apparent to one skilled in the art, two or more modules may be combined to form a single module that performs the associated functions according to implementation of the present solution.

[0081] Additionally, memory or other storage and communication components may be employed in implementing the solution. It should be understood that, for purposes of clarity, the above description describes the implementation of the solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements, or domains may be used without departing from the solution. For example, functionality illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Hence, references to specific functional units do not indicate a strict logical or physical structure or organization, but rather merely a reference to a suitable means for providing the described functionality.

[0082] Various modifications of the implementations described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other implementations without departing from the scope of the present disclosure. Thus, the present 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 recited in the following claims.

Claims

1. A wireless communication method, the wireless communication method comprising: receiving, by a wireless communication device, a configuration from a wireless communication node, the configuration comprising a plurality of sets of power control parameters, at least one of the plurality of sets of power control parameters being associated with at least one set of uplink data transmission instances; receiving, by the wireless communication device, a scheduling grant from the wireless communication node, the scheduling grant having no first sounding reference signal resource indicator (SRI) field or no second SRI field; determining, by the wireless communication device, a default power control parameter value to use for transmission based on the sets of power control parameters, the default power control parameter value corresponding to one of a plurality of sets of uplink data transmission instances; Including, each of the plurality of uplink data transmission instances includes a codebook-based or non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission; each of the plurality of uplink data transmission instances is associated with a corresponding set of sounding reference signal (SRS) resources; Determining the default power control parameter values ​​includes: When a first SRI field is absent from the scheduling grant, the wireless communication device determines that the default power control parameter values ​​correspond to a first set of the plurality of sets of the plurality of uplink data transmission instances; or determining, by the wireless communication device, that the default power control parameter values ​​correspond to a second set of the plurality of sets of the plurality of uplink data transmission instances when a second SRI field is absent from the scheduling grant; A wireless communication method comprising:

2. 2. The wireless communication method of claim 1, wherein each of the plurality of sets of power control parameters comprises one of a target received power, a fractional path loss compensation ratio, a PUSCH path loss estimation reference signal index, or a closed loop power control adjustment index.

3. The default power control parameter values ​​corresponding to the first set of the plurality of sets of the plurality of uplink data transmission instances are: a target received power identified from a first open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the first open loop power control parameter in the set of open loop power control parameters; or Closed Loop Power Control Adjustment Index with Value = 0 10. The wireless communication method of claim 1, comprising one of:

4. the default power control parameter values ​​corresponding to the second set of the plurality of sets of the plurality of uplink data transmission instances are: a target received power identified from a second open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the second open loop power control parameter in the set of open loop power control parameters; or Closed Loop Power Control Adjustment Index with Value = 1 10. The wireless communication method of claim 1, comprising one of:

5. The wireless communication method includes receiving, by the wireless communication device, a media access control element (MAC CE) from a wireless communication node; A most significant bit (MSB) in the second octet of the MAC CE being 0 indicates that a mapping between an identity of a first configuration mapping and an identity of a first PUSCH path loss estimation reference signal index associated with a first SRS resource set should be updated; and 2. The wireless communication method of claim 1, wherein the MSB bit in the second octet of the MAC CE being 1 indicates that a mapping between an identity of a second configuration mapping and an identity of a second PUSCH path loss estimation reference signal index associated with a second SRS resource set is to be updated.

6. The wireless communication method of claim 1 , wherein the configuration is received through radio resource control (RRC) signaling.

7. The wireless communication method of claim 1 , wherein the scheduling grant is received through a Downlink Control Information (DCI) format.

8. 1. A wireless communication device, comprising: the wireless communication device comprises at least one processor; The at least one processor receiving, via a receiver, from a wireless communication node, a configuration comprising a plurality of sets of power control parameters, at least one of the plurality of sets of power control parameters being associated with at least one set of uplink data transmission instances; receiving, via the receiver, from the wireless communication node, a scheduling grant that does not include a first sounding reference signal resource indicator (SRI) field or a second SRI field; determining default power control parameter values ​​corresponding to one of a plurality of sets of a plurality of uplink data transmission instances based on the plurality of sets of power control parameters to use for the transmission; and each of the plurality of uplink data transmission instances includes a codebook-based or non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission; each of the plurality of uplink data transmission instances is associated with a corresponding set of sounding reference signal (SRS) resources; Determining the default power control parameter values ​​includes: When a first SRI field is absent from the scheduling grant, the wireless communication device determines that the default power control parameter values ​​correspond to a first set of the plurality of sets of the plurality of uplink data transmission instances; or determining, by the wireless communication device, that the default power control parameter values ​​correspond to a second set of the plurality of sets of the plurality of uplink data transmission instances when a second SRI field is absent from the scheduling grant; 1. A wireless communication device comprising:

9. 9. The wireless communication device of claim 8, wherein each of the plurality of sets of power control parameters comprises one of a target received power, a fractional path loss compensation ratio, a PUSCH path loss estimation reference signal index, or a closed loop power control adjustment index.

10. The default power control parameter values ​​corresponding to the first set of the plurality of sets of the plurality of uplink data transmission instances are: a target received power identified from a first open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the first open loop power control parameter in the set of open loop power control parameters; or Closed Loop Power Control Adjustment Index with Value = 0 9. The wireless communication device of claim 8, comprising one of:

11. the default power control parameter values ​​corresponding to the second set of the plurality of sets of the plurality of uplink data transmission instances are: a target received power identified from a second open loop power control parameter in the set of open loop power control parameters; a fractional path loss compensation ratio identified from the second open loop power control parameter in the set of open loop power control parameters; or Closed Loop Power Control Adjustment Index with Value = 1 9. The wireless communication device of claim 8, comprising one of:

12. The at least one processor configured to receive a Media Access Control Element (MAC CE) from the wireless communication node via the receiver; A most significant bit (MSB) in the second octet of the MAC CE being 0 indicates that a mapping between an identity of a first configuration mapping and an identity of a first PUSCH path loss estimation reference signal index associated with a first SRS resource set should be updated; and 9. The wireless communication device of claim 8, wherein the MSB bit in the second octet of the MAC CE being 1 indicates that a mapping between an identity of a second configuration mapping and an identity of a second PUSCH path loss estimation reference signal index associated with a second SRS resource set is to be updated.

13. 10. The wireless communication device of claim 8, wherein the configuration is received through radio resource control (RRC) signaling.

14. 10. The wireless communication device of claim 8, wherein the scheduling grant is received through a downlink control information (DCI) format.

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