System and method for power control in uplink transmission

Abstract

To provide a system and a method for power control in uplink transmission.SOLUTION: In a wireless communication network and / or system, a method 300 performed by a wireless communication device includes receiving 301 a configuration comprising a plurality of sets of power control parameters from a wireless communication node, and receiving 302 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. 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.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure generally relates to wireless communication, and more specifically, to systems and methods for physical uplink shared channel (PUSCH) transmission power control.

Background Art

[0002] Co - transmission or reception is the transmission or reception of a plurality of signals from a plurality of facilities that are transmitted or received simultaneously. Co - transmission or reception of a plurality of transmission and reception points (multi - TRP) plays an important role in increasing the throughput of wireless communication. Both Long Term Evolution - Advanced (LTE - A) and New Radio (NR) access technologies support multi - transmission - reception node transmission.

Summary of the Invention

Means for Solving the Problems

[0003] Exemplary implementations disclosed herein are directed to solving problems related to one or more of the problems presented in the prior art and 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. However, it is understood that these implementations are presented by way of example and not limitation, and that various modifications to the disclosed implementations may be made within the scope of the present disclosure, as will be apparent to those skilled in the art upon a reading of the present disclosure.

[0004] In one implementation, a method implemented 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, the method implemented by the wireless communication device includes each of a set of power control parameters having at least one of a target received power, a ratio of fractional path loss compensation, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index.

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

[0008] The above and other aspects and their implementations are described in more detail in the drawings, the description, and the claims. The present invention provides, for example, the following. (Item 1) A wireless communication method, the method comprising: receiving, by the wireless communication device, from the wireless communication node, a configuration having a plurality of sets of power control parameters; receiving, by the wireless communication device, 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; and a method. (Item 2) Each of the sets of power control parameters includes at least one of a target received power, a ratio of fractional path loss compensation, a physical uplink shared channel (PUSCH) path loss estimation reference signal index, or a closed-loop power control adjustment index, according to the method of item 1. (Item 3) 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, each respective value of one of the sets of power control parameters corresponding to the first of the sets of uplink data transmission instances is a default value, according to the method of item 1. (Item 4) The default value is a target received power identified from a first open-loop power control parameter in an open-loop power control parameter set, a ratio of fractional path loss compensation identified from the first open-loop power control parameter in the open-loop power control parameter set, a PUSCH path loss estimation reference signal index mapped to a configured mapping in the single mapping list with identification information = 0, or a closed-loop power control adjustment index with value = 0 and includes at least one of them, according to the method of item 3. (Item 5) The signaling is a configured grant including a first open-loop power control parameter set indication field, and the first open-loop power control parameter set indication field indicates up to two candidate values of the target received power, according to the method of item 3. (Item 6) 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, each respective value of one of the sets of power control parameters corresponding to the second one of the sets of uplink data transmission instances is a default value, the method according to item 1. (Item 7) The default value is the target received power identified from a second open-loop power control parameter in the open-loop power control parameter set, the ratio of fractional path loss compensation identified from the second open-loop power control parameter in the open-loop power control parameter set, the PUSCH path loss estimation reference signal index mapped to the configured mapping in the single mapping list with identification information = 1, or the closed-loop power control adjustment index with value = 1 The method according to item 6, comprising at least one of. (Item 8) The signaling is a configured grant including a second open-loop power control parameter set indication field, and the second open-loop power control parameter set indication field indicates the two largest candidate values of the target received power, the method according to item 6. (Item 9) When the signaling is a configured grant without a second SRI field and the configuration provides a second mapping list, each respective value of one of the sets of power control parameters corresponding to the second one of the sets of uplink data transmission instances is a default value, which is associated with the configured mapping in the second mapping list, the method according to item 1. (Item 10) The default value is The target received power 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, the target received power, The ratio of fractional path loss compensation 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, the ratio of fractional path loss compensation, The PUSCH path loss estimation reference signal index determined from the configured mapping in the second mapping list, or, The closed-loop power control adjustment index determined from the configured mapping in the second mapping list The method according to item 9, comprising at least one of the above. (Item 11) The signaling is a configured grant including a second open-loop power control parameter set indication field, and the second open-loop power control parameter set indication field indicates the two largest candidate values of the target received power. The method according to item 9. (Item 12) The configured mapping is the first element or the last element of the second mapping list. The method according to item 9. (Item 13) The signaling is a MAC control element (CE), and one bit of the MAC CE is configured to update the mapping between the identification information of the first mapping and the identification information of the PUSCH path loss estimation reference signal index in the first of the set of power control parameters, and the mapping between the identification information of the second mapping and the identification information of the PUSCH path loss estimation reference signal index in the second of the set of power control parameters The method according to item 1. (Item 14) The configuration is received through radio resource control (RRC) signaling. The method according to item 1. (Item 15) The method according to 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) The method according to item 1, wherein each of the uplink data transmission instances includes codebook-based or non-codebook-based physical uplink shared channel (PUSCH) transmission. (Item 17) The method according to item 3, wherein the first mapping is configured to associate a first SRI field with a set of the power control parameters corresponding to a first set of the uplink data transmission instances. (Item 18) The method according to item 6, wherein the second mapping is configured to associate the second SRI field with a set of the power control parameters corresponding to a second set of the uplink data transmission instances. (Item 19) A wireless communication method, the method comprising: transmitting, by a wireless communication node, a configuration including a plurality of sets of power control parameters to a wireless communication device; transmitting, by 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 to the wireless communication device and. (Item 20) A wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement the method according to any one of items 1-19. (Item 21) A computer program product comprising computer-readable program media code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of items 1-19.

Brief Description 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 to facilitate the understanding of the readers of the present solution and merely depict exemplary implementations of the present solution. Therefore, the drawings should not be regarded as limiting the scope, range, or usability of the present solution. Note that these drawings are not necessarily drawn to scale for the sake of clarity and ease of illustration.

[0010]

Figure 1

[0011]

Figure 2

[0012]

Figure 3

[0013]

Figure 4

[0014]

Figure 5

[0015]

Figure 6

DETAILED DESCRIPTION OF THE INVENTION

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

[0017] FIG. 1 illustrates an exemplary wireless communication network and / or system 100 in which the techniques disclosed herein may be implemented according to an implementation of the present disclosure. In the following discussion, the 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 the "network 100". Such an exemplary network 100 includes a base station 102 (hereinafter, "BS102"), user equipment devices 104 (hereinafter, "UE104") that can communicate with each other via a communication link 110 (e.g., a wireless communication channel), and clusters 126, 130, 132, 134, 136, 138, and 140 of cells that overlay a geographic area 101. In FIG. 1, BS102 and UE104 are included within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may operate at its allocated bandwidth and include at least one base station that provides a sufficient wireless service range to its intended users.

[0018] For example, BS102 may operate at an allocated channel transmission bandwidth and provide a sufficient service range to UE104. BS102 and UE104 may communicate with each other via a downlink radio frame 118 and an uplink radio frame 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, and the subframes may include data symbols 122 / 128. In the present disclosure, BS102 and UE104 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 solution.

[0019] Figure 2 illustrates a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals, such as OFDM / OFDMA signals, according to some implementations of the present solution. System 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one exemplary 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] System 200 generally includes a base station 202 (hereinafter, "BS202") and a user equipment device 204 (hereinafter, "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, and each module is coupled and interconnected with each other via a data communication bus 220 as needed. UE204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, and each module is coupled and interconnected with each other via a data communication bus 240 as needed. BS202 communicates with UE204 via a communication channel 250 that can be any wireless channel or other medium suitable for transmission of data as described herein.

[0021] As will be appreciated 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 logics 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 generally described in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend upon the particular application and design constraints imposed on the overall system. Those skilled in the art proficient in the concepts described herein may implement such functionality in a manner suitable for each particular application, and such implementation decisions should not be construed 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. The transceiver 230 includes a radio frequency (RF) transmitter and an RF receiver, and each of the RF transmitter and the RF receiver includes circuitry coupled to an antenna 232. Duplex switching (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time-division duplexing scheme. Similarly, according to some implementations, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210. The transceiver 210 includes an RF transmitter and an RF receiver, and each of the RF transmitter and the RF receiver includes circuitry coupled to an antenna 212. Downlink duplex switching may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time-division duplexing scheme. The operations of the two transceiver modules 210 and 230 can be temporally coordinated such that when the downlink transmitter is coupled to the downlink antenna 212, the uplink receiver circuitry is coupled to the uplink antenna 232 for receiving transmissions via the wireless transmission link 250. In some implementations, there is proximity time synchronization with a minimum guard time associated with the change 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 a suitably configured RF antenna arrangement 212 / 232 that can support a particular wireless communication protocol and modulation scheme. In some exemplary implementations, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and new 5G standards. However, it should be understood that the present disclosure is not necessarily limited in application to specific 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, BS202 can be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some implementations, UE204 can 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. Processor modules 214 and 236 can 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 gates or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. Thus, the processor can be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor can also be implemented as a combination of computing devices, such as, for example, 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 combination.

[0025] Furthermore, the steps of a method or algorithm described in connection with the implementations disclosed herein can be embodied directly in hardware, firmware, software modules executed by processor modules 214 and 236, or 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 regard, memory modules 216 and 234 can each be coupled to processor modules 210 and 230, whereby processor modules 210 and 230 can each read information from and write information to memory modules 216 and 234. Memory modules 216 and 234 can be integrated within their respective processor modules 210 and 230. In some implementations, each of memory modules 216 and 234 can include cache memory for storing temporary variables or other intermediate information during the execution of instructions executed by their respective processor modules 210 and 230. Each of memory modules 216 and 234 can include non-volatile memory for storing instructions to be executed by their respective processor modules 210 and 230.

[0026] The network communication module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bidirectional communication 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 communication module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, but not limited to, the network communication module 218 provides an 802.3 Ethernet (registered trademark) interface so that the base station transceiver 210 can communicate with a conventional Ethernet (registered trademark)-based computer network. In this way, the 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 a defined operation or function, the terms “configured for,” “configured to,” and their conjugations refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform the defined operation or function.

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

[0028] 5G NR includes multiple-input multiple-output (MIMO) features that facilitate the use of a large number of antenna elements at a base station (BS). One MIMO feature is support for multi-TRP operation. In 5G NR, PUSCH repetitions are supported based on a single TRP. A single TRP reduces the reliability of the communication system. For example, in FR2, when the link between the UE and the TRP is affected by a blockage, the reliability of PUSCH repetitions based on a single TRP decreases. The BS can use a multi-TRP or the like to transmit data to the UE to improve the transmission performance. The UE can use the same information for repeated transmissions over multiple slots. That is, since each transmission is a PUSCH transmission / repetition for a single TRP, at least the same spatial relationship, precoder, and / or power control parameters are used. The robustness and reliability regarding PUSCH transmission are improved by single downlink control information (DCI)-based multi-TRP PUSCH repetitions.

[0029] Figure 3 illustrates an exemplary method 300 of a UE configured for single DCI-based multi-TRP PUSCH repetitions according to some implementations of the present disclosure.

[0030] As shown at 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 ratio of fractional path loss compensation, 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 that associates a set of configured 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, and the two mapping lists are each used to associate two SRI indications with the 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 a set of SRS resources. The set of SRS resources may be configured with the same higher-layer parameter usage in the SRS-ResourceSet. The SRS-ResourceSet may be set to "codebook" or "nonCodebook". That is, each of the uplink data transmission instances may be a codebook-based or non-codebook-based PUSCH transmission.

[0032] In addition, or alternatively, within a single configured mapping list, a first configured mapping and a second configured mapping may exist. The two mappings in the single configured mapping list may each be used to associate an SRI indication with the power control parameters for two PUSCH transmission sets. The first mapping and the second mapping in the single configured mapping list may each be the first and second elements in the single configured mapping. In addition, or alternatively, the first mapping and the second mapping in the single configured mapping may each be the first elements of the first half and the second half of the configured mapping list.

[0033] Figure 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 reference signal (SRS) set (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 links between the UE and multi-TRPs etc. (e.g., TRP0 403 and TRP1 406), the powers 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] PUSCH transmission groups (e.g., PUSCH 401 and PUSCH 404) can be distinguished in various aspects: (1) The first PUSCH transmission group can be associated with a first SRS resource group using non-codebook-based transmission, while the second PUSCH transmission group can be associated with a different SRS resource group using non-codebook-based transmission; (2) The first PUSCH transmission group can correspond to a first transmission opportunity, while the second PUSCH transmission can correspond to a second transmission opportunity; (3) The first PUSCH transmission group can correspond to a first frequency hop, and the second PUSCH transmission group can correspond to a second frequency hop; (4) The first PUSCH transmission group can include the first half of the set of PUSCH transmissions, while the second PUSCH transmission group can include the second half of the set of PUSCH transmissions; (5) The first PUSCH transmission group can include PUSCH transmissions in the set of PUSCH transmissions with odd order, while the second PUSCH transmission group can include PUSCH transmissions in the set of PUSCH transmissions with even order; (6) The first PUSCH transmission group can include some PUSCH transmissions (e.g., the first, second, fifth, and sixth PUSCH transmissions), while the second PUSCH transmission group can include other PUSCH transmissions (e.g., the third, fourth, seventh, and eighth PUSCH transmissions).

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

[0037] The UE may transmit uplink data in accordance with 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 that configures UE-specific power control parameters for PUSCH transmission. That is, the BS may configure the 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., the higher layer parameter p0-AlphaSets), (2) a PUSCH path loss estimation reference signal (RS) index set (e.g., the higher layer parameter pathlossReferenceRSToAddModList), and (3) a mapping list (e.g., the higher layer parameter SRI-PUSCH-MappingToAddModList).

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

[0039] The PUSCH path loss estimation RS index set may include at least one of PUSCH path loss estimation RS indexes (e.g., the higher layer parameter PUSCH-PathlossReferenceRS). The PUSCH path loss estimation RS index (denoted as q d as shown) 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 state information (CSI) RS resource index.

[0040] A mapping list (e.g., a first mapping list, a second mapping list, or a configured mapping list including 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 following power control parameters: (1) identification information of an open-loop power control parameter (e.g., a higher layer parameter SRI-P0-PUSCH-AlphaSetId), (2) identification information 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 an SRI indication to one or more power control parameters. In one example, a 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. Further, a 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.

[0041] When the UE is scheduled to transmit PUSCH transmissions, the 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. In a first set of PUSCH transmissions, the UE may determine the power control parameters for each PUSCH transmission based on the mapping from the first mapping list.

[0042] In one embodiment, (1) the UE is provided with various identification information of open-loop power control parameters by a configured mapping (for example, a list of a single configured mapping including a first mapping configuration and a second mapping configuration, a mapping composed of a first mapping list, and / or various identification information of open-loop power control parameters composed of a mapping composed of a second mapping list), and (2) when the scheduling grant for PUSCH transmission includes one or more SRS resource indicator (SRI) fields (for example, PUSCH transmission is scheduled according to a first SRI field and / or a second SRI field), the UE may determine the value of the open-loop power control parameter based on the configured mapping and the SRI field value.

[0043] For example, the first value of the open-loop power control parameter may be based on the mapping composed of the first mapping list and the SRI field value in the first SRI field associated with the mapping composed of the first mapping list. The second value of the open-loop parameter may be based on the mapping composed of the second mapping list and the SRI field value in the second SRI field associated with the mapping composed of 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 the list of a single configured mapping.

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

[0047] Similarly, if the scheduling grant for scheduling 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 is 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 ratio of fractional path loss compensation 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), (3) 0 (when there is no first mapping and / or scheduling grant), or 1 (when there is no second mapping and / or scheduling grant), and the PUSCH path loss estimation RS index q mapped to the mapping list with the identification information, and (4) at least one of the closed-loop power control adjustment indices 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). d and may include at least one of the closed-loop power control adjustment indices 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 a second mapping list but the UE does not provide the second SRI field of the configured mapping included in the second mapping list, the UE may use the default value to determine the power control parameter value corresponding to the second set of uplink data transmission instances. The default value may be associated with the configured mapping in the second mapping list.

[0050] The default value is (1) the target received power identified from the open-loop power control parameters in the open-loop power control parameter set of the configured mapping in the second mapping list, (2) the ratio of fractional path loss compensation identified from the open-loop power control parameters in the open-loop power control parameter set of the configured mapping in the second mapping list, and (3) the PUSCH path loss estimation RS index q determined from the configured mapping in the second mapping list. dand may include at least one of the closed-loop power control adjustment indices l determined from the configured mappings in the (4) second mapping list.

[0051] In one example, the UE may be provided with various identification information of open-loop power control parameters configured by a configured mapping (e.g., the first mapping or the second mapping in a list of single configured mappings). 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 list of single configured mappings.

[0052] In a different example, the UE may be provided with a list of single configured mappings that includes a first mapping and a second mapping. If the UE is not provided with the first mapping in the list of single configured mappings, or if the scheduling grant for scheduling 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 list of single 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 open-loop power control parameter set indication field associated therewith (e.g., a first open-loop power control parameter set indication field associated with the first mapping, a second open-loop power control parameter set indication field associated with the second mapping, or an open-loop power control parameter set indication field associated with the configured mapping in a list of single configured mappings), the UE may determine the value of p0 from various candidate values of p0.

[0054] For example, when the value of 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) indication field 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 and / or second mapping).

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

[0056] In addition, or alternatively, when the value of the open-loop power control parameter set (e.g., the open-loop power control parameter set associated with the configured mapping in the list of a single configured mapping, and / or the first mapping, and / or the second mapping) indication field is "10", p0 can be determined from the second value within 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 is provided with various identification information of q d (e.g., in a list of a single configured mapping including the first mapping and the second mapping, a mapping composed of the first mapping list, and / or a mapping composed of the second mapping list, q dThere are various identification information), and (2) when the scheduling grant for scheduling PUSCH transmission includes one or more SRI fields (e.g., the first or second SRI field), the UE may determine the PUSCH path loss estimation RS index q based on the configured mapping and the SRI field value. d For example, in the case of a single configured mapping, the UE may determine the value of q based on the first SRI field value associated with the first mapping set. d For example, the value of q

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

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

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

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

[0062] In an alternative embodiment, (1) when the UE is provided with two or more values of l by the configured mapping (for example, there are various identification information of l constituted by a list of a single configured mapping including a first mapping and a second mapping, a mapping constituted from a first mapping list, and / or a mapping constituted from a second mapping list), and (2) when the scheduling grant for scheduling PUSCH transmission includes an SRI field (for example, the PUSCH transmission is scheduled according to a first SRI field and / or a second SRI field), the UE may determine the value of l based on the configured mapping 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 l of the closed-loop power control adjustment is 0. Similarly, if the scheduling grant for scheduling PUSCH transmission does not include an SRI field, the UE may determine that the value l of the closed-loop power control adjustment is 0.

[0064] If the UE is provided with a second mapping list and the scheduling grant for scheduling PUSCH transmission does not include a second SRI field, the UE may determine the value l of the closed-loop power control adjustment 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 the second mapping is not configured within the single list of configured mappings, the UE may determine that the value l of the closed-loop power control adjustment 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 the scheduling grant for scheduling 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 l of the closed-loop power control adjustment is 1.

[0066] If the UE is also provided with a configured higher-layer parameter enablePLRS-UpdateForPUSCH-SRS-r16, the identification information of q in the configured mapping d may be updated by a MAC control element (CE). FIG. 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 of the two reserved bits 501 can be used to indicate while the mapping value can be updated by the MAC CE. For example, one bit of the MAC CE can be configured to update the mapping between the identification information of the first mapping and the q in the first of the power control parameter sets d exponent identification information. Additionally, or alternatively, one bit of the MAC CE can be configured to update the mapping between the identification information of the second mapping and the q in the second of the power control parameter sets d exponent identification information.

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

[0069] When one bit in octet 502 is 1, the mapping value between the configured mapping identification information and the PUSCH path loss estimation RS index identification information can be updated by the MAC CE. 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 mapping value between the configured mapping identification information and the PUSCH path loss estimation RS index identification information can be updated by the MAC CE. 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 identification information of the configured mapping and the identification information 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 the second SRS resource set.

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

[0073] As shown at 601, the BS may transmit to the UE the configuration of a set of power control parameters. The power control parameters may be power control parameters as discussed herein. As shown at 602, the UE may transmit signaling for associating 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] Although 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 as a limitation. Similarly, the various schematic diagrams may depict exemplary architectures or configurations, which are provided to enable those skilled in the art to understand the exemplary features and functions of the present solution. However, such those skilled in the art will understand that the present solution is not limited to the illustrated exemplary architectures or configurations and can be implemented using various 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. Therefore, the scope and range of the present disclosure should not be limited by any of the illustrative implementations described above.

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

[0076] In addition, those skilled in the art will understand that information and signals can 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 can be represented, for example, by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0077] Those skilled in the art will further understand that any of the various illustrative logical 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 implementation, analog implementation, or a combination of the two), firmware, various forms of program or design code incorporating instructions (which may be referred to herein, for convenience, as "software" or "software modules"), or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have generally been described above 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 the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in various ways for each particular application, but such implementation decisions do not depart from the scope of the present disclosure.

[0078] Furthermore, those skilled in the art will understand that the various illustrative logical blocks, modules, devices, components, and circuits described herein can be implemented in or performed by an integrated circuit (IC) that can include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logical blocks, modules, and circuits can further include an antenna and / or transceiver and can communicate with various components within a network or device. The general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. The processor can also be implemented as a combination of computing devices, such as, for example, a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration of combinations of the functions described herein.

[0079] When implemented in software, functions can be stored on a computer-readable medium as one or more instructions or code. Thus, 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 and includes any medium that can be made to store a computer program or code and that can be used to transfer a computer program or code from one location 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 the 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” refers to software, firmware, hardware, and any combination of these elements for implementing the associated functionality described herein. Additionally, for purposes of discussion, various modules are described as discrete modules, however, as would be apparent to one of ordinary skill in the art, two or more modules can be combined to form a single module that implements the associated functionality in accordance with the implementation of the solution.

[0081] In addition, a memory or other storage device and communication components may be employed in the implementation of the present solution. For the purpose of clarity, it should be understood that the above description has been explaining the implementation of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality among different functional units, processing logic elements, or domains may be used without departing from the present solution. For example, functionality illustrated as being implemented by separate processing logic elements or controllers may be implemented by the same processing logic element or controller. Thus, the reference to specific functional units is not indicative of a strict logical or physical structure or arrangement, but rather is merely a reference to suitable means for providing the functionality described.

[0082] 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 the disclosure. Accordingly, the disclosure is not intended to be limited to the implementations shown herein, but rather is to be regarded as covering the broadest scope consistent with the novel features and principles disclosed herein, as recited in the following claims.

Claims

[Claim 1] The invention described in this specification.

Images