Power control parameter determination method, terminal, network device and storage medium

Abstract

The embodiment of the present application discloses a method for determining a power control parameter, a terminal, a network device, and a storage medium. The method includes: determining a target transmission configuration indication TCI state used by an uplink signal, and determining a power control parameter of the uplink signal according to the target TCI state. Through the embodiment of the present application, a standard is provided for a terminal to determine a power control parameter of an uplink signal according to the TCI state, so that the terminal can send the uplink signal with an appropriate transmission power, so as to meet the needs of the development of technical standards.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method for determining a power control parameter, a terminal, a network device, and a storage medium. Background Art

[0002] In the related art, the transmit beam of an uplink signal (for example, a physical uplink shared channel (PUSCH)) is determined by the sounding reference signal (SRS) resource indicator (SRS resource indicator, SRI) in the downlink control information (DCI), and the power control parameters of the corresponding physical uplink shared channel (PUSCH) are also determined by the correspondence between SRI and the high-level signaling configuration. Other uplink signals are also determined in a similar manner, but the signaling used is different. The receiving beam of the downlink signal is indicated by the transmission configuration indication (TCI) status, and the terminal device can determine the reference signal that uses the same receiving beam as the target downlink signal through the TCI status. In the new wireless (New In the evolution of NR (New Radio), the transmit beam of the uplink signal can also be indicated by the TCI state, that is, the terminal device can obtain the reference signal through the TCI state similar to the downlink, which is used to obtain the transmit beam of the target uplink signal. In this case, how to determine the power control parameters of the corresponding uplink signal to obtain the appropriate transmit power is a problem that needs to be solved.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present application provide a method for determining a power control parameter, a terminal, a network device, and a storage medium, and further provide a standard for a terminal to determine the power control parameter of an uplink signal based on a TCI state, so that the terminal can send the uplink signal with an appropriate transmission power, thereby meeting the needs of the development of technical standards.

[0005] In a first aspect, a method for determining a power control parameter is provided, comprising:

[0006] Determine a target transmission configuration indication TCI state adopted by an uplink signal; and determine a power control parameter of the uplink signal according to the target TCI state.

[0007] In a second aspect, a method for determining a power control parameter is provided, comprising:

[0008] Configure the correspondence between TCI state and power control parameters for the terminal;

[0009] A target transmission configuration indication TCI state adopted by the uplink signal is configured for the terminal, so that the terminal determines the power control parameter of the uplink signal according to the target TCI state and the corresponding relationship.

[0010] In a third aspect, a terminal is provided, including:

[0011] A first determination module is used to determine a target transmission configuration indication TCI state adopted by an uplink signal;

[0012] The second determination module is used to determine the power control parameter of the uplink signal according to the target TCI state.

[0013] In a fourth aspect, a network device is provided, including:

[0014] A first configuration module, used to configure a correspondence between a TCI state and a power control parameter for a terminal;

[0015] The second configuration module is used to configure a target transmission configuration indication TCI state used by the uplink signal for the terminal, so that the terminal determines the power control parameter of the uplink signal according to the target TCI state and the corresponding relationship.

[0016] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementations.

[0017] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manners.

[0018] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method in any one of the first to second aspects or their respective implementations.

[0019] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.

[0020] In a ninth aspect, a computer program product is provided, comprising computer program instructions, which enable a computer to execute the method in any one of the first to second aspects or their respective implementations.

[0021] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.

[0022] Through the above technical solution, the terminal can determine the power control parameters according to the TCI state adopted by the determined uplink signal (for example, the TCI state configured by the network device), so as to obtain the appropriate transmission power to send the uplink signal, and thus provide a standard for the terminal to determine the power control parameters of the uplink signal based on the TCI state, so that the terminal can send the uplink signal with the appropriate transmission power, so as to meet the needs of the development of technical standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of a communication system applied in an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the process of uplink beam management involved in a specific embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of a TCI state configuration method of PDSCH involved in a specific embodiment of the present application.

[0027] Figure 4 A schematic flowchart of a method for determining a power control parameter according to an embodiment of the present application.

[0028] Figure 5 A schematic flowchart of a second method for determining a power control parameter provided in an embodiment of the present application.

[0029] Figure 6 A schematic diagram of updating the power control parameters corresponding to the TCI state through MAC CE is provided in an embodiment of the present application.

[0030] Figure 7 It is a schematic block diagram of a terminal provided in an embodiment of the present application.

[0031] Figure 8 It is a schematic block diagram of a network device provided in an embodiment of the present application.

[0032] Fig. 9 It is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application.

[0033] Fig.10 It is a schematic structural diagram of the chip of an embodiment of the present application.

[0034] Fig.11 It is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

[0037] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0038] The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal device" includes but is not limited to connection via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or a device of another terminal device configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal device may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

[0039] Optionally, device to device (D2D) communication may be performed between the terminal devices 120 .

[0040] Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0041] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0042] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0043] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices mentioned above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0044] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] In NR, the management of uplink beams can be handled in the following manner: the terminal can use analog beams to transmit uplink data and uplink control information. The terminal can perform uplink beam management based on the SRS signal to determine the analog beam used for uplink transmission. Figure 2 is a schematic diagram of the process of uplink beam management involved in a specific embodiment of the present application, such as Figure 2As shown, the network can configure SRS resource set 1 for the terminal, and the set includes N SRS resources (N>1). The terminal can use different beams to send N SRS resources, and the network device measures the reception quality of the N SRS resources respectively, and selects the K SRS resources with the best reception quality. The network device can configure another SRS resource set 2, which includes K SRS resources, and let the terminal use the simulated beam used by the K SRS resources selected in set 1 to transmit the SRS resources in set 2. This can be achieved by configuring the K SRS resources selected in set 1 as reference SRS resources for the K SRS resources in set 2. At this time, based on the SRS resources transmitted by the terminal in SRS resource set 2, the network device can select an SRS resource with the best reception quality and notify the terminal of the corresponding SRI. After receiving the SRI, the terminal determines the simulated beam used by the SRS resource indicated by the SRI as the simulated beam used to transmit the PUSCH. For PUSCH, SRI is indicated by the SRI indication field in the DCI.

[0046] For the Physical Downlink Control Channel (PUCCH), a similar method is used to indicate the beam used. Specifically, for each PUCCH resource, multiple PUCCH-spatialrelationinfo are configured in the RRC signaling, and the currently used PUCCH-spatialrelationinfo is indicated therefrom through the Media Access Control (MAC) layer signaling. Among them, each PUCCH-spatialrelationinfo contains a reference signal for determining the transmit beam of the PUCCH. For each SRS resource, the corresponding SRS-spatialrelationinfo can also be configured through RRC signaling, which contains a reference signal for determining the transmit beam of the SRS.

[0047] In the NR system, the quasi-co-location (QCL) indication of downlink signal transmission can be adopted in the following manner: the network equipment can configure the corresponding TCI state for each downlink signal or downlink channel, indicating the QCL reference signal corresponding to the target downlink signal or target downlink channel, so that the terminal receives the target downlink signal or target downlink channel based on the reference signal.

[0048] Among them, a TCI state can include the following configurations:

[0049] (1) TCI state ID, used to identify a TCI state;

[0050] (2) QCL information 1

[0051] (3) QCL information 2

[0052] Among them, a QCL information contains the following information:

[0053] (1) QCL type configuration, which can be one of QCL type A, QCL type B, QCL type C or QCL type D;

[0054] (2) QCL reference signal configuration, including the cell ID where the reference signal is located, BWP ID, and the reference signal identifier (which can be a CSI-RS resource ID or SSB index);

[0055] Among them, in QCL information 1 and QCL information 2, the QCL type of at least one QCL information must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

[0056] Among them, the definitions of different QCL type configurations are as follows:

[0057] (1)'QCL-TypeA':{Doppler shift,Doppler spread,average delay,delayspread}

[0058] (2)'QCL-TypeB':{Doppler shift,Doppler spread}

[0059] (3)'QCL-TypeC':{Doppler shift,average delay}

[0060] (4)'QCL-TypeD':{Spatial Rx parameter}

[0061] If the network device configures the QCL reference signal of the target downlink channel as a reference synchronization signal block (SSB) or a reference channel state information reference signal (CSI-RS) resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal can assume that the target downlink signal is the same as the target large-scale parameter of the reference SSB or reference CSI-RS resource, and thus uses the same corresponding receiving parameters for reception, and the target large-scale parameters are determined by the QCL type configuration. Similarly, if the network device configures the QCL reference signal of the target downlink channel as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeD, the terminal can use the same receiving beam (i.e., Spatial Rx parameter) as the receiving reference SSB or reference CSI-RS resource to receive the target downlink signal. Typically, the target downlink channel and its reference SSB or reference CSI-RS resource are sent by the same TRP, the same panel or the same beam in the network device. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels is different, different TCI states are usually configured.

[0062] For downlink control channels, the TCI status can be indicated by RRC signaling or RRC signaling + MAC signaling. Figure 3 is a schematic diagram of a TCI state configuration method for a PDSCH according to a specific embodiment of the present application, such as Figure 3 As shown, the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling. Finally, one or two TCI states are indicated from the activated TCI states through the TCI state indication field in the DCI for the PDSCH scheduled by the DCI.

[0063] For an uplink signal, the transmission power of the uplink signal is determined by a power control parameter of the uplink signal. The power control parameter of the uplink signal may include multiple types, for example, may include at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

[0064] For example, in the related art, the transmit power of the PUSCH can be calculated by the following formula:

[0065]

[0066] Among them, P CMAX,f,c (i) is the maximum transmit power of the terminal on the current carrier, i is the index of a PUSCH transmission, and j is the open-loop power control parameter index (including the target power P O_PUSCH,b,f,c (j) and path loss factor α b,f,c (j));q d It is the index of the reference signal used for path loss measurement, used to obtain the path loss value PL b,f,c (q d ), which is also an open-loop power control parameter; f b,f,c (i,l) is the closed-loop power control adjustment factor, where l is the index of the closed-loop power control process. The terminal determines the closed-loop power adjustment factor based on the TPC command field sent by the network device. The TPC command field can be carried by the DCI used to schedule PUSCH in the UE search space, or by the DCI format 2_2 used to carry the group TPC command field in the common search space.

[0067] In NR, the terminal determines the transmit beam of the scheduled PUSCH based on the SRI in the DCI, and also determines the power control parameters used for the PUSCH based on the SRI. Optionally, the network device pre-configures multiple SRI-PUSCH-PowerControl parameter fields through RRC signaling, each parameter field corresponds to an SRI value, and the parameter field contains a set of PUSCH power control parameter configurations corresponding to the SRI value (for example, j, qd, l). When the values ​​indicated by the SRI are different, the power control parameter configuration in the corresponding parameter field (SRI-PUSCH-PowerControl) is used to determine the transmit power of the currently scheduled PUSCH.

[0068] For another example, in the related art, the transmission power of the SRS can be calculated by the following formula:

[0069]

[0070] Where i is the index of an SRS transmission, q s is the open-loop power control parameter index (including the target power P O_SRS,b,f,c (q s ) and the path loss factor α SRS,b,f,c (q s ));q d It is the index of the reference signal used for path loss measurement, used to obtain the path loss value PL b,f,c (q d ), which is also an open-loop power control parameter; h b,f,c (i,l) is the closed-loop power control adjustment factor, where l is the index of the closed-loop power control process. d and qd Included in the configuration parameters of the SRS resource set, it is configured to the terminal through high-level signaling. If the high-level signaling configures SRS and PUSCH to use the same power control process, then h b,f,c (i,l)=f b,f,c (i,l). If the high-level signaling configures SRS to adopt an independent power control process, the network device indicates the TPC command of the SRS of each terminal through DCI format 2_3 in the common search space. The terminal determines the closed-loop power adjustment factor according to its own TPC command, which is independent of the PUSCH closed-loop power adjustment factor.

[0071] On the basis of the above-mentioned related technologies, in the evolution of NR, the transmit beam of the uplink signal can also be indicated by the TCI state, that is, the terminal device can obtain the reference signal through the TCI state similar to the downlink, which is used to obtain the transmit beam of the target uplink signal. In this case, how to determine the power control parameters of the corresponding uplink signal to obtain the appropriate transmit power is a problem that needs to be solved.

[0072] Therefore, an embodiment of the present application proposes a method for determining a power control parameter. Figure 4 A schematic flow chart of a method for determining a power control parameter provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the method includes:

[0073] S402, determine the target transmission configuration indication TCI state adopted by the uplink signal, wherein the TCI state may include multiple pieces of information, for example, may include one of the following information: QCL type, reference source signal (for example, may be a reference source signal ID), reference service cell, reference bandwidth part (Bandwidth part, BWP).

[0074] S404, determining a power control parameter of an uplink signal according to a target TCI state, wherein the target TCI state may be a TCI state for determining a transmit beam of an uplink signal, or a TCI state specifically used to determine a power control parameter, etc. The power control parameter may also include multiple parameters, for example, may include at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

[0075] Through the above processing, the terminal can determine the power control parameters according to the TCI state adopted by the determined uplink signal (for example, the TCI state configured by the network device), so as to obtain the appropriate transmission power to send the uplink signal. This further provides a standard for the terminal to determine the power control parameters of the uplink signal based on the TCI state, so that the terminal can send the uplink signal with the appropriate transmission power, thereby meeting the needs of the development of technical standards.

[0076] As an optional embodiment, the executor of the method may be a terminal, and the terminal may be a mobile terminal, for example, some 5G mobile terminals such as smart phones, smart cars, drones, robots, etc.

[0077] As an optional embodiment, when determining the power control parameter of the uplink signal according to the target TCI state, multiple methods can be used. For example, when the network device configures the correspondence between the TCI state and the power control parameter to the terminal, the power control parameter can be determined according to the configured correspondence. For example, the power control parameter of the uplink signal is determined according to the target TCI state and the correspondence between the TCI state and the power control parameter.

[0078] As an optional embodiment, the above correspondence relationship may be determined in multiple ways. For example, the correspondence relationship between the TCI state and the power control parameter may be determined in at least one of the following ways:

[0079] (1) The first high-layer signaling for configuring the TCI state includes the power control parameters corresponding to the TCI state; that is, the high-layer signaling for configuring the TCI state from the network device to the terminal directly includes the TCI state itself and the power control parameters corresponding to the TCI state. It should be noted that there may be multiple TCI states included in the high-layer signaling, and therefore, the high-layer signaling also includes the power control parameters corresponding to the multiple TCI states respectively.

[0080] (2) Receive the correspondence between the TCI state identification ID of the TCI state configured through the second high-level signaling and the power control parameters, and determine the correspondence between the TCI state and the power control parameters according to the correspondence; that is, the network device configures the correspondence between the TCI state identified by the TCI state ID and the power control parameters to the terminal by configuring the correspondence between the TCI state ID and the power control parameters to the terminal.

[0081] (3) Determine the correspondence between the TCI state and the power control parameter through the radio resource control RRC signaling and the media access control control unit MAC CE, wherein the RRC signaling is used to configure the initial correspondence between the TCI state and the power control parameter, and the MAC CE is used to activate or update the initial correspondence. That is, the initial correspondence is first configured through the RRC signaling, and then the initial correspondence is activated or updated according to the MAC CE, so as to obtain the correspondence between the activated or updated TCI state and the power control parameter. It should be noted that updating the initial correspondence may be updating the TCI state or the power control parameter separately, that is, as long as one of them is updated, it is an update of the correspondence. In addition, the MAC CE may only update some of the multiple power control parameters corresponding to a TCI state.

[0082] It should be noted that the above-mentioned method of determining the correspondence between the TCI state and the power control parameter can be flexibly selected according to the specific situation, and can also be selected according to the different signaling used for communication between the network device and the terminal.

[0083] For another example, when the network device does not configure the correspondence between the TCI state and the power control parameter to the terminal, that is, when the terminal does not receive the signaling used to configure the correspondence between the TCI state and the power control parameter, the power control parameter with the lowest index in the power control parameter candidate set is determined as the power control parameter of the uplink signal.

[0084] Through the above processing, the power control parameters of the uplink signal are determined for the correspondence between the TCI state and the power control parameter configured by the network device to the terminal and the correspondence between the TCI state and the power control parameter not configured by the network device to the terminal. That is, regardless of whether the network device configures the above correspondence to the terminal, the terminal can determine the power control parameter of the uplink signal according to the target TCI state adopted by the uplink signal, so as to send the uplink signal using the appropriate transmission power.

[0085] As an optional embodiment, when determining the power control parameters of the uplink signal according to the target TCI state, it may also include: when the reference source signal indicated by the target TCI state is an uplink reference signal, determining the power control parameters of the reference source signal indicated by the target TCI state as the power control parameters of the uplink signal. That is, when the reference source signal indicated by the target TCI state is an uplink reference signal, the power control parameters of the reference source signal are the power control parameters of the uplink signal.

[0086] As an optional embodiment, determining the power control parameter of the uplink signal according to the target TCI state may also include: when the reference source signal indicated by the target TCI state is a downlink reference signal and the power control parameter is a downlink reference signal used for path loss measurement, determining that the reference source signal indicated by the target TCI state is the power control parameter of the uplink signal. That is, when the reference source signal indicated by the target TCI state is a downlink reference signal and the power control parameter is a downlink reference signal used for path loss measurement, the reference source signal is the power control parameter of the uplink signal.

[0087] As an optional embodiment, when the uplink signal is SRS and the power control parameter is a closed-loop power control adjustment state, the power control parameter of the uplink signal is determined according to the target TCI state, and it can also include: the SRS on different SRS resources in an SRS resource set have the same closed-loop power control adjustment state determined according to the target TCI state. Although different SRS resources in an SRS resource set can correspond to different target TCI states, the closed-loop power control adjustment state determined according to the correspondence between these target TCI states and the TCI state and the power control parameter is the same. Through the above processing, an SRS resource set can be used for SRS transmission on a panel, and the same panel (corresponding to the same SRS resource set) uses the same closed-loop power control adjustment state, and different panels use different closed-loop power control adjustment states, so that independent SRS closed-loop power control can be achieved for each panel.

[0088] As an optional embodiment, the terminal may also receive a carrier set configured by a network device, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts a target TCI state, or at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state. Through the above processing, only a few signaling indications are needed to determine the power control parameters of the uplink signals on multiple carriers, that is, the uplink signal of the terminal on each carrier in the carrier set can obtain appropriate transmission power.

[0089] As an optional embodiment, the target TCI state may be determined in different ways according to different uplink signal types. The following takes the uplink signals as PUSCH, PUCCH, SRS and PRACH as examples.

[0090] Optionally, when the uplink signal is a PUSCH, determining a target TCI state adopted by the uplink signal may include: determining the target TCI state to be a TCI state indicated by TCI state indication information in downlink control information DCI for scheduling the PUSCH.

[0091] The target TCI state may be a TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

[0092] When the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule the PUSCH does not contain TCI state indication information or the time interval between the DCI used to schedule the PUSCH and the PUSCH is less than a preset threshold value, determining the target TCI state used by the uplink signal includes one of the following: determining the target TCI state to be the TCI state with the lowest TCI state identification ID among at least one candidate TCI state for PUSCH transmission activated by the MAC CE; determining the target TCI state to be the first candidate TCI state for PUSCH transmission activated by the MAC CE; determining the target TCI state to be the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI; determining the target TCI state to be the TCI state with the lowest TCI state ID among at least one TCI state configured by the radio resource control RRC; determining the target TCI state to be the TCI state used by the control resource set CORESET where the PDCCH carrying the DCI is located.

[0093] Optionally, when the uplink signal is PUCCH, determining the target TCI state adopted by the uplink signal may include at least one of the following: determining the target TCI state to be a TCI state for PUCCH transmission activated by MAC CE; in the case where no MAC CE is received to activate the TCI state for PUCCH transmission, determining the target TCI state to be a TCI state with the lowest TCI state ID among at least one TCI state configured by RRC.

[0094] Optionally, in the case where the uplink signal is SRS, determining the target TCI state adopted by the uplink signal may include one of the following: determining the target TCI state to be a TCI state for SRS transmission configured by RRC; determining the target TCI state to be a TCI state for SRS transmission indicated by MAC CE; determining the target TCI state to be a TCI state adopted by a preset SRS resource in the SRS resource set where the SRS resource carrying the SRS is located.

[0095] When it is determined that the target TCI state is a TCI state for SRS transmission indicated by the MAC CE, and in the case that the SRS is a quasi-persistent SRS, the MAC CE is a MAC CE for activating the quasi-persistent SRS.

[0096] Among them, when the target TCI state is determined to be the TCI state adopted by a preset SRS resource in the SRS resource set where the SRS resource carrying the SRS is located, the SRS transmitted on different SRS resources in an SRS resource set all determine the target TCI state based on the TCI state adopted by a preset SRS resource, that is, the SRS transmitted on different SRS resources adopt the same target TCI state, and the same power control parameters can be determined, thereby achieving the effect of unchanged power within the SRS resource set.

[0097] Optionally, when the uplink signal is a non-periodic SRS, determining a target TCI state adopted by the uplink signal may include: determining the target TCI state to be a TCI state indicated by a DCI for triggering the non-periodic SRS.

[0098] Optionally, when the uplink signal is a physical random access channel PRACH, determining the target TCI state adopted by the uplink signal may include one of the following: determining the target TCI state to be a TCI state for PRACH transmission configured by RRC; determining the target TCI state to be a TCI state for PRACH transmission indicated by MAC CE.

[0099] Through the above-mentioned uplink power control parameter determination method, the terminal determines the power control parameter associated with the TCI state according to the TCI state configured for the uplink signal, thereby obtaining the transmission power of the uplink signal according to the determined power control parameter. The power control parameter can adopt different indication methods according to different uplink signal types. Corresponding to the above-mentioned different indication methods, the terminal adopts different determination methods. Therefore, the terminal device can adopt different power control parameter determination methods according to different uplink signal types, so as to support different power control parameters when sending uplink signals with different transmission beams, so as to obtain the transmission power suitable for the current transmission.

[0100] The present application also proposes a method for determining a power control parameter. Figure 5 A schematic flow chart of a second method for determining a power control parameter provided in an embodiment of the present application, such as Figure 5 As shown, the method includes:

[0101] S502: Configure a correspondence between TCI states and power control parameters for the terminal.

[0102] S504, configure the target transmission configuration indication TCI state used by the uplink signal for the terminal, and let the terminal determine the power control parameter of the uplink signal according to the target TCI state and the corresponding relationship, wherein the TCI state may include multiple pieces of information, for example, one of the following information: QCL type, reference source signal (for example, it may be a reference source signal ID), reference service cell, reference bandwidth part BWP. The power control parameter may also include multiple types, for example, at least one of the following: a parameter for determining the target received power, a parameter for determining the path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining the closed-loop power control adjustment state.

[0103] Through the above processing, the network device can configure the power control parameters of the uplink signal for the terminal according to the target TCI state adopted by the uplink signal configured for the terminal, so that the terminal can obtain appropriate transmission power to send the uplink signal. Further, a standard is provided for the network device to configure the power control parameters of the uplink signal for the terminal according to the TCI state, so that the terminal can send the uplink signal with appropriate transmission power, thereby meeting the needs of the development of technical standards.

[0104] As an optional embodiment, the execution subject of the method may be a network device, and the network device may be the network device 110 described above.

[0105] As an optional embodiment, according to the target TCI state, the power control parameters of the uplink signal are configured for the terminal in a variety of ways. For example, when the network device configures the correspondence between the TCI state and the power control parameter for the terminal, the power control parameters of the uplink signal can be configured for the terminal according to the configured correspondence. For example, the correspondence between the TCI state and the power control parameter is configured for the terminal; according to the target TCI state and the correspondence, the power control parameters of the uplink signal are configured for the terminal.

[0106] As an optional embodiment, the above correspondence relationship may be determined in a variety of ways. For example, the correspondence relationship between the TCI state and the power control parameter may be configured for the terminal in at least one of the following ways:

[0107] (1) The first high-layer signaling for configuring the TCI state includes the power control parameters corresponding to the TCI state; that is, the high-layer signaling for configuring the TCI state from the network device to the terminal directly includes the TCI state itself and the power control parameters corresponding to the TCI state. It should be noted that there may be multiple TCI states included in the high-layer signaling, and therefore, the high-layer signaling also includes the power control parameters corresponding to the multiple TCI states respectively.

[0108] (2) The correspondence between the TCI state and the power control parameters is configured for the terminal by configuring the correspondence between the TCI state identification ID of the TCI state and the power control parameters through the second high-level signaling; that is, the network device configures the correspondence between the TCI identified by the TCI state and the power control parameters for the terminal by configuring the correspondence between the TCI state ID and the power control parameters for the terminal.

[0109] (3) The initial correspondence between the TCI state and the power control parameter is configured for the terminal by configuring the initial correspondence between the TCI state and the power control parameter through radio resource control RRC signaling, and activating or updating the initial correspondence through MAC CE. That is, the initial correspondence is first configured through RRC signaling, and then the initial correspondence is activated or updated according to MAC CE, so as to obtain the correspondence between the activated or updated TCI state and the power control parameter. It should be noted that updating the initial correspondence may be updating the TCI state or the power control parameter separately, that is, as long as one of them is updated, the correspondence is updated.

[0110] It should be noted that the above-mentioned method of configuring the correspondence between the TCI state and the power control parameters for the terminal can be flexibly selected according to the specific situation, and can also be selected according to the different signaling used for communication between the network device and the terminal.

[0111] Through the above processing, the power control parameters of the uplink signal are configured for the terminal according to the correspondence between the TCI state and the power control parameter configured by the network device to the terminal and the correspondence between the TCI state and the power control parameter not configured by the network device to the terminal. That is, regardless of whether the network device configures the above correspondence to the terminal, the network device can configure the power control parameters of the uplink signal for the terminal according to the target TCI state adopted by the uplink signal, so as to send the uplink signal using the appropriate transmission power.

[0112] As an optional embodiment, when the uplink signal is SRS and the power control parameter is a closed-loop power control adjustment state, the power control parameter of the uplink signal is configured for the terminal according to the target TCI state and the corresponding relationship, including: the SRS on different SRS resources in an SRS resource set have the same closed-loop power control adjustment state configured according to the target TCI state. Although different SRS resources in an SRS resource set may correspond to different target TCI states, the closed-loop power control adjustment state determined according to the corresponding relationship between these target TCI states and the TCI state and the power control parameter is the same. Through the above processing, an SRS resource set can be used for SRS transmission on a panel, and the same panel (corresponding to the same SRS resource set) uses the same closed-loop power control adjustment state, and different panels use different closed-loop power control adjustment states, so that independent SRS closed-loop power control can be achieved for each panel.

[0113] As an optional embodiment, the network device may also send a carrier set to the terminal, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts the target TCI state, or at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state. Through the above processing, the network device only needs to use very few signaling instructions to configure the power control parameters of the uplink signals on multiple carriers for the terminal, that is, to enable the uplink signal of the terminal on each carrier in the carrier set to obtain the appropriate transmission power.

[0114] As an optional embodiment, different configuration modes may be used according to different uplink signal types to configure the target TCI state of the uplink signal for the terminal. The following examples are respectively given for uplink signals such as PUSCH, PUCCH, SRS and PRACH.

[0115] Optionally, when the uplink signal is a physical uplink shared channel PUSCH, configuring a target TCI state for the uplink signal for the terminal may include: configuring the TCI state indicated by TCI state indication information in downlink control information DCI for scheduling PUSCH as the target TCI state.

[0116] The target TCI state is the TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

[0117] When the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule PUSCH does not contain TCI state indication information or the time interval between the DCI used to schedule PUSCH and PUSCH is less than a preset threshold value, configuring the target TCI state used by the uplink signal for the terminal may include one of the following: configuring the TCI state with the lowest TCI state identification ID among at least one candidate TCI state activated by MAC CE for PUSCH transmission as the target TCI state; configuring the first candidate TCI state for PUSCH transmission activated by MACCE as the target TCI state; configuring the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI as the target TCI state; configuring the TCI state with the lowest TCI state ID among at least one TCI state configured by the radio resource control RRC as the target TCI state; configuring the TCI state used by the control resource set CORESET where the PDCCH carrying the DCI is located as the target TCI state.

[0118] Optionally, when the uplink signal is a physical uplink control channel PUCCH, configuring a target TCI state for the uplink signal for the terminal may include at least one of the following: configuring a TCI state for PUCCH transmission activated by a MAC CE as a target TCI state; in the case where no MAC CE is sent to activate the TCI state for PUCCH transmission, configuring a TCI state with the lowest TCI state ID among at least one TCI state configured by RRC as the target TCI state.

[0119] Optionally, in the case where the uplink signal is a sounding reference signal SRS, configuring a target TCI state for the uplink signal for the terminal may include one of the following: configuring a TCI state for SRS transmission configured by RRC as a target TCI state; configuring a TCI state for SRS transmission indicated by MAC CE as a target TCI state; configuring a TCI state adopted by a preset SRS resource in an SRS resource set where an SR resource carrying SRS is located as a target TCI state.

[0120] When a TCI state for SRS transmission indicated by the configured MAC CE is a target TCI state, and in the case that the SRS is a quasi-persistent SRS, the MAC CE is a MAC CE for activating the quasi-persistent SRS.

[0121] Among them, when the TCI state adopted by a preset SRS resource in the SRS resource set where the SR resource carrying SRS is configured is the target TCI state, the SRS transmitted on different SRS resources in an SRS resource set all determine the target TCI state based on the TCI state adopted by a preset SRS resource, that is, the SRS transmitted on different SRS resources adopt the same target TCI state, and the same power control parameters can be determined, thereby achieving the effect of unchanged power within the SRS resource set.

[0122] Optionally, when the SRS is a non-periodic SRS, configuring a target TCI state of an uplink signal for the terminal includes: configuring a TCI state indicated by a DCI for triggering the non-periodic SRS as the target TCI state.

[0123] Optionally, when the uplink signal is a physical random access channel PRACH, a target TCI state for the uplink signal is configured for the terminal, including one of the following: configuring a TCI state for PRACH transmission configured by RRC as the target TCI state; configuring a TCI state for PRACH transmission indicated by MAC CE as the target TCI state.

[0124] Through the above-mentioned uplink power control parameter determination method, the network device configures the power control parameter of the uplink signal for the terminal according to the TCI state used for configuring the uplink signal for the terminal, so that the terminal can obtain the transmission power of the uplink signal according to the determined power control parameter. The power control parameter can adopt different indication methods according to different uplink signal types, so that the terminal device can adopt different power control parameter determination methods according to different uplink signal types, thereby supporting different power control parameters when sending uplink signals with different transmission beams to obtain the transmission power suitable for the current transmission.

[0125] In combination with the above embodiments and preferred embodiments, specific embodiments in which uplink signals are PUSCH, PUCCH and SRS are described below.

[0126] Example 1: (PUSCH)

[0127] The terminal device determines the correspondence between at least one TCI state and a PUSCH power control parameter based on high-level signaling.

[0128] It is assumed here that at least one TCI state is M TCI states (M>=1). The following two configuration methods can be used to determine the corresponding relationship:

[0129] Method 1: The network device configures M TCI states through high-level signaling. The configuration information of each TCI state includes not only the configuration of the TCI state itself (such as the information of the QCL reference signal, etc.), but also the information of the corresponding power control parameters (such as the target received power and path loss factor, the downlink reference signal for path loss measurement and the closed-loop power control adjustment state index, etc.).

[0130] For example, the configuration information of a TCI state configured by RRC may include: (where the first four parameters are used to determine the QCL reference signal, and the last three parameters are corresponding power control parameters.)

[0131]

[0132] As an optional embodiment, the network device may activate or update the power control parameter corresponding to any one of the at least one TCI states through the MAC CE. Figure 6 A schematic diagram of updating the power control parameters corresponding to the TCI state through MAC CE provided in an embodiment of the present application, such as Figure 6 As shown, for example, the path loss measurement reference signal included in the configuration information of a TCI state can be updated through the following MAC CE.

[0133] Wherein, Si corresponds to a Pathloss RS pre-configured by RRC, and the updated Pathloss RS is indicated by a bitmap, or by directly indicating the Pathloss RS index or ID.

[0134] As an optional embodiment, the terminal device may receive a carrier set configured by the network device through high-level signaling. When the network device activates or updates a certain TCI state in at least one TCI state through MAC CE, the TCI state with the same TCI state ID as the activated / updated TCI state on each carrier in the carrier set will be activated / updated. This method can be used only to activate / update the TCI state on the BWP with the same BWP ID as the BWP where the PUSCH is located on each carrier, or only to activate / update the TCI state on the currently activated BWP on each carrier.

[0135] Method 2: The network device configures M TCI states through high-level signaling, and then configures the power control parameters corresponding to each of the M TCI states through another high-level signaling. Specifically, the network device can configure the power control parameters corresponding to each TCI state ID.

[0136] For example, the RRC signaling used to configure a TCI state is as follows:

[0137]

[0138] For example, the RRC signaling used to configure the power control parameters corresponding to a TCI state is as follows: (where the last three parameters are the power control parameters corresponding to the TCI state indicated by TCI-StateId, and each TCI state corresponds to a TCI-PowerControl domain). This indication information can be used only for PUSCH and PUCCH, not for SRS, that is, SRS still uses the existing power control parameter configuration method based on the SRS resource set, which is independent of the TCI state; it can also be applied to various types of uplink signals.

[0139]

[0140] Similarly, the network device can also activate or update the power control parameters corresponding to any TCI state ID through MAC CE.

[0141] In this embodiment of the present application, a TCI state may include at least one of the following information: QCL type, reference signal (for example, it may be a reference signal ID), reference serving cell, reference BWP (for example, it may be a reference BWPID).

[0142] For example, the QCL type may include one of several QCL types agreed upon by the terminal device and the network, for example, at least one of the following QCL types:

[0143] 1.QCL type X: Spatial Tx Parameter

[0144] 2.QCL type Y: Spatial Transmission Filter

[0145] 3.QCL type Z: Antenna panel

[0146] Among them, the first two are used to determine the transmission beam, and the third is used to determine the antenna panel used for transmission.

[0147] For example, the terminal may agree with the network device on a QCL type, such as the above QCL type X, in which case the TCI state does not require indication information of the QCL type.

[0148] For example, the reference signal ID can be used to determine the signal used as the QCL reference of the uplink signal, such as the reference signal used to determine the transmission beam of the uplink signal or the transmission panel. The terminal device can determine the transmission beam of the uplink signal based on the transmission or reception beam of the reference signal.

[0149] For example, the reference serving cell and the reference BWP ID may be used to determine the carrier and the BWP where the reference signal indicated by the reference signal ID is located.

[0150] In the embodiment of the present application, the power control parameter includes at least one of the following: 0 Parameters used to determine the parameters of the path loss weighting factor a, reference signals for path loss measurement, and indexes of the closed-loop power control process.

[0151] For example, to determine the target received power P 0 The parameters for determining the path loss weighting factor a and the parameters for determining the path loss weighting factor a can be determined by the same parameter set (for example, a P0-AlphaSet corresponding to the aforementioned P0-AlphaSetId can include these two parameters);

[0152] For example, the reference signal used for path loss measurement may be SSB or CSI-RS.

[0153] For example, the index of the closed-loop power control process may be one of the values ​​of l agreed upon by the terminal and the network device, such as 0-1 or 0-3.

[0154] The terminal device determines the power control parameters of PUSCH based on the target TCI state configured for PUSCH and the corresponding relationship, where the M TCI states include the target TCI state.

[0155] In this embodiment of the present application, the terminal determines the power control parameter corresponding to the target TCI state according to the target TCI state and the corresponding relationship as the power control parameter of the PUSCH.

[0156] Among them, the terminal can determine the target TCI state according to the following method 1:

[0157] (1) Determine, according to the RRC signaling sent by the network device, M TCI states and a correspondence between at least one TCI state and a PUSCH power control parameter;

[0158] (2) According to MAC CE, K TCI states are activated from M TCI states for PUSCH transmission, where K is less than or equal to M.

[0159] (3) Determine the target TCI state from the K TCI states according to the TCI state indication information in the DCI, wherein each indication value of the TCI state indication information corresponds to one or more TCI states among the K TCI states. If the network device does not send a MAC CE, the TCI state indication information is used to determine the target TCI state from the M TCI states.

[0160] It should be noted that method 1 can be used in the case where the DCI for scheduling PUSCH contains TCI status indication information, such as DCI format0_1. Optionally, the time interval between DCI and PUSCH needs to be greater than or equal to a certain threshold value. The threshold value can be a value reported by the terminal or a value configured by the network device.

[0161] Among them, the terminal can determine the target TCI state according to the following method 2:

[0162] The target TCI state is the TCI state with the lowest TCI state ID among the K TCI states activated by MAC CE for PUSCH transmission, or the first TCI state among the TCI states activated by MAC CE for PUSCH transmission, or the TCI state indicated by the lowest value in the TCI state indication information (for example, if the information has 3 bits, it is 000), or the TCI state with the lowest TCI state ID among the M TCI states configured by RRC, or the TCI state used by the CORESET where the PDCCH carrying DCI is located.

[0163] It should be noted that the second method can be used when the DCI for scheduling PUSCH does not include TCI status indication information, or when the time interval between DCI and PUSCH is less than a certain threshold value. The threshold value can be a value reported by the terminal or a value configured by the network device.

[0164] Among them, in the embodiment of the present application, if the correspondence between the TCI state and the PUSCH power control parameter is not configured to the terminal, for example, the terminal does not receive the corresponding RRC parameter, then the terminal device can determine the power control parameter with the lowest index in the power control parameter candidate set configured by the network device as the power control parameter of the PUSCH. For example, the terminal device can use the path loss measurement reference signal corresponding to PathlossReferenceRS-Id=0, use the parameters in P0-AlphaSet corresponding to P0-AlphaSetId=0 to determine P0 and alpha, and use the closed loop power control process corresponding to close loop index=0.

[0165] Among them, in the embodiment of the present application, the power control parameters of PUSCH can be described as follows.

[0166] For example, if the QCL reference signal indicated by the target TCI state is an uplink signal (such as SRS), the power control parameter of the PUSCH determined according to the present invention is the same as the power control parameter of the QCL reference signal indicated by the target TCI state. The power control parameter here may include only the pathloss RS or other power control parameters.

[0167] For example, if the power control parameter is a downlink reference signal for path loss measurement, and the QCL reference signal indicated by the target TCI state is a downlink signal, the path loss measurement reference signal of the PUSCH is the same as the QCL reference signal indicated by the target TCI state.

[0168] Example 2: (PUCCH)

[0169] The terminal device determines the correspondence between at least one TCI state and a PUCCH power control parameter based on high-level signaling.

[0170] For the specific configuration method, please refer to the above-mentioned embodiment 1.

[0171] The terminal device determines the power control parameter corresponding to the target TCI state according to the target TCI state configured for the PUCCH and the corresponding relationship as the power control parameter of the PUCCH.

[0172] As an optional embodiment, the terminal device may determine M TCI states through RRC signaling, and activate one of the TCI states for PUCCH transmission according to MACCE as the target TCI state. The MAC CE may carry a TCI state ID corresponding to the target TCI state (referred to as the target TCI state ID).

[0173] As an optional embodiment, if the terminal does not receive a MAC CE for activating the TCI state, the target TCI state is a preset TCI state, for example, the TCI state with the lowest TCI state ID among the M TCI states configured by RRC (for example, the TCI state corresponding to TCI state ID=0).

[0174] As an optional embodiment, if the correspondence between the TCI state and the PUCCH power control parameter is not configured to the terminal, for example, the terminal does not receive the corresponding RRC parameter, then the terminal device can determine the power control parameter with the lowest index in the power control parameter candidate set configured by the network device as the power control parameter of the PUCCH. For example, the terminal device can use the path loss measurement reference signal corresponding to PathlossReferenceRS-Id=0, use the parameters in P0-Set corresponding to P0-SetId=0 to determine P0, and use the closed loop power control process corresponding to close loop index=0.

[0175] Among them, in the embodiment of the present application, the power control parameters of PUCCH can be described as follows.

[0176] For example, if the QCL reference signal indicated by the target TCI state is an uplink signal (such as SRS), the power control parameter of the PUCCH determined according to the present invention is the same as the power control parameter of the QCL reference signal indicated by the target TCI state. The power control parameter here may include only the pathloss RS or other power control parameters.

[0177] For example, if the power control parameter is a downlink reference signal for path loss measurement, and the QCL reference signal indicated by the target TCI state is a downlink signal, the path loss measurement reference signal of the PUCCH is the same as the QCL reference signal indicated by the target TCI state.

[0178] As an optional embodiment, the terminal device may receive a carrier set configured by high-level signaling. When the terminal receives a MACCE for activating a target TCI state (the ID of the TCI state is called the target TCI state ID) for PUCCH transmission, the PUCCHs in the target BWP on each carrier in the carrier set that use the same PUCCH resources (or the same PUCCH resource ID) as the PUCCH all adopt the activated target TCI state, or the PUCCHs in the target BWP on each carrier in the carrier set that use the same PUCCH resources (or the same PUCCH resource ID) as the PUCCH all adopt the target TCI state ID to obtain the target TCI state, thereby determining its own power control parameters. The target BWP is the same BWP ID as the BWP where the PUCCH is located, or is the BWP currently activated on each carrier.

[0179] Example 3: (SRS)

[0180] The terminal device determines the correspondence between at least one TCI state and an SRS power control parameter according to high-level signaling.

[0181] For the specific configuration method, please refer to Example 1.

[0182] The terminal device determines the power control parameters of the SRS according to the target TCI state configured for the SRS and the corresponding relationship, wherein at least one TCI state includes the target TCI state.

[0183] As an optional embodiment, one of the following methods may be used:

[0184] Method 1: The target TCI state is a TCI state for SRS transmission configured by RRC, or a TCI state for SRS transmission indicated by MAC CE, or a TCI state corresponding to a preset SRS resource in the SRS resource set where the SRS resource carrying SRS is located.

[0185] Among them, the MAC CE can carry the TCI state ID corresponding to the target TCI state (referred to as the target TCI state ID).

[0186] Among them, a preset SRS resource in the SRS resource set where the SRS resource carrying the SRS is located can be the earliest transmitted SRS resource in the SRS resource set, or the SRS resource with the lowest SRS resource ID in the SRS resource set. The terminal can use the TCI state configured by the network device for the preset SRS resource as the target TCI state, thereby determining the power control parameters of the SRS.

[0187] Among them, all SRS resources in the SRS resource set adopt the TCI state corresponding to the preset SRS resource as the target TCI state, so as to determine the same power control parameter.

[0188] For example, the terminal device may use the power control parameter corresponding to the TCI state configured by the network device for the preset SRS resource as the power control parameter of all SRS resources in the SRS resource set.

[0189] Method 2: The uplink signal is a quasi-persistent SRS. In this case, the target TCI state is a TCI state for SRS transmission indicated by a MAC CE for activating SRS.

[0190] Method 3: The uplink signal is aperiodic SRS, and the target TCI state is the TCI state indicated by the DCI for triggering the aperiodic SRS. Specifically, the target TCI state can be indicated by TCI state indication information in the DCI, or by SRS triggering signaling in the DCI.

[0191] As an optional embodiment, if the correspondence between the TCI state and the SRS power control parameter is not configured to the terminal, for example, the terminal does not receive the corresponding RRC parameter, then the terminal device can determine the power control parameter with the lowest index in the power control parameter candidate set configured by the network device as the power control parameter of the SRS. For example, the terminal device can use the path loss measurement reference signal corresponding to PathlossReferenceRS-Id=0, use the parameters in P0-AlphaSet corresponding to P0-AlphaSetId=0 to determine P0 and alpha, and use the closed loop power control process corresponding to close loop index=0.

[0192] In the embodiments of the present application, the power control parameters of the SRS may be described as follows, and the specific implementation method is referred to Embodiment 2.

[0193] As an optional embodiment, the terminal device may receive a carrier set configured by high-level signaling. When the terminal receives a MAC CE for activating a target TCI state of an SRS (the ID of the TCI state is called the target TCI state ID), the SRS resources in the target BWP on each carrier in the carrier set that use the same SRS resource ID as the SRS resources carrying the SRS all use the activated target TCI state, or the SRS resources in the target BWP on each carrier in the carrier set that use the same SRS resource ID as the SRS resources carrying the SRS all use the target TCI state ID to obtain their own target TCI state, thereby determining their own power control parameters. The target BWP is the BWP with the same BWP ID as the BWP where the SRS is located, or is the BWP currently activated on each carrier.

[0194] Through the above embodiments, the terminal can determine the power control parameters according to the TCI status configured by the network device, and different uplink signal types can adopt different power control parameter determination methods, thereby supporting the use of different transmission beams to send uplink signals. When different power control parameters can be determined, a transmission power suitable for the current transmission can be obtained.

[0195] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0196] Combined with the above Figures 1 to 6 , describes in detail the power control parameter determination method according to the embodiment of the present application, and will be combined with Figures 7 to 9 , describing the terminal and network device according to the embodiments of the present application.

[0197] Figure 7 is a schematic block diagram of a terminal provided in an embodiment of the present application, such as Figure 7 As shown, the terminal 700 includes: a first determination module 702 and a second determination module 704. The device is described below.

[0198] The first determination module 702 is used to determine the target transmission configuration indication TCI state adopted by the uplink signal; the second determination module 704 is connected to the above-mentioned first determination module 702, and is used to determine the power control parameter of the uplink signal according to the target TCI state.

[0199] Optionally, as an embodiment, determining the power control parameter of the uplink signal according to the target TCI state includes: determining the power control parameter of the uplink signal according to the target TCI state and the corresponding relationship between the TCI state and the power control parameter.

[0200] Optionally, as an embodiment, it also includes: determining the correspondence between the TCI state and the power control parameters by at least one of the following methods: the first high-level signaling used to configure the TCI state includes the power control parameters corresponding to the TCI state; receiving the correspondence between the TCI state identification ID of the TCI state configured by the second high-level signaling and the power control parameters, and determining the correspondence between the TCI state and the power control parameters according to the correspondence; determining the correspondence between the TCI state and the power control parameters by radio resource control RRC signaling and media access control control unit MAC CE, wherein the RRC signaling is used to configure the initial correspondence between the TCI state and the power control parameters, and the MAC CE is used to activate or update the initial correspondence.

[0201] Optionally, as an embodiment, it also includes: in the case where no signaling for configuring the correspondence between the TCI state and the power control parameter is received, determining the power control parameter with the lowest index in the power control parameter candidate set as the power control parameter of the uplink signal.

[0202] Optionally, as an embodiment, determining the power control parameters of the uplink signal according to the target TCI state includes: when the reference source signal indicated by the target TCI state is an uplink reference signal, determining the power control parameters of the reference source signal indicated by the target TCI state as the power control parameters of the uplink signal.

[0203] Optionally, as an embodiment, determining the power control parameters of the uplink signal according to the target TCI state includes: when the reference source signal indicated by the target TCI state is a downlink reference signal and the power control parameter is a downlink reference signal used for path loss measurement, determining that the reference source signal indicated by the target TCI state is the power control parameter of the uplink signal.

[0204] Optionally, as an embodiment, when the uplink signal is SRS and the power control parameter is a closed-loop power control adjustment state, the power control parameter of the uplink signal is determined according to the target TCI state, including: the SRS on different SRS resources in an SRS resource set have the same closed-loop power control adjustment state determined according to the target TCI state.

[0205] Optionally, as an embodiment, it also includes: receiving a carrier set configured by a network device, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts a target TCI state, or, at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state.

[0206] Optionally, as an embodiment, when the uplink signal is a physical uplink shared channel PUSCH, determining the target TCI state adopted by the uplink signal includes: determining the target TCI state to be the TCI state indicated by the TCI state indication information in the downlink control information DCI used to schedule the PUSCH.

[0207] Optionally, as an embodiment, the target TCI state is the TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

[0208] Optionally, as an embodiment, when the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule the PUSCH does not contain TCI state indication information or the time interval between the DCI used to schedule the PUSCH and the PUSCH is less than a preset threshold value, the target TCI state adopted by the uplink signal is determined, including one of the following: determining the target TCI state to be the TCI state with the lowest TCI state identification ID among at least one candidate TCI state for PUSCH transmission activated by the MAC CE; determining the target TCI state to be the first candidate TCI state for PUSCH transmission activated by the MAC CE; determining the target TCI state to be the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI; determining the target TCI state to be the TCI state with the lowest TCI state ID among at least one TCI state configured by the radio resource control RRC; determining the target TCI state to be the TCI state used by the control resource set CORESET where the PDCCH carrying the DCI is located.

[0209] Optionally, as an embodiment, when the uplink signal is a physical uplink control channel PUCCH, determining the target TCI state adopted by the uplink signal includes at least one of the following: determining the target TCI state to be a TCI state for PUCCH transmission activated by a MAC CE; in the case where no MAC CE is received to activate the TCI state for PUCCH transmission, determining the target TCI state to be a TCI state with the lowest TCI state ID among at least one TCI state configured by RRC.

[0210] Optionally, as an embodiment, when the uplink signal is a sounding reference signal SRS, determining the target TCI state adopted by the uplink signal includes at least one of the following: determining the target TCI state to be a TCI state for SRS configured by RRC; determining the target TCI state to be a TCI state for SRS transmission indicated by MAC CE; determining the target TCI state to be a TCI state adopted by a preset SRS resource in an SRS resource set where an SRS resource carrying SRS is located.

[0211] Optionally, as an embodiment, in the case that the SRS is a quasi-persistent SRS, the MAC CE is a MAC CE for activating the quasi-persistent SRS.

[0212] Optionally, as an embodiment, in the case where the uplink signal is a non-periodic SRS, determining a target TCI state adopted by the uplink signal includes: determining the target TCI state to be a TCI state indicated by a DCI for triggering the non-periodic SRS.

[0213] Optionally, as an embodiment, when the uplink signal is a physical random access channel PRACH, determining the target TCI state adopted by the uplink signal includes one of the following: determining the target TCI state to be a TCI state for PRACH transmission configured by RRC; determining the target TCI state to be a TCI state for PRACH transmission indicated by MAC CE.

[0214] Optionally, as an embodiment, the TCI state includes at least one of the following information: QCL type, reference source signal, reference service cell, reference bandwidth part BWP.

[0215] Optionally, as an embodiment, the power control parameters include at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

[0216] It should be understood that the above and other operations and / or functions of each unit in the device according to the embodiment of the present application are respectively to achieve Figures 1 to 6For the sake of brevity, the corresponding processes of the terminal in each method are not repeated here.

[0217] Figure 8 is a schematic block diagram of a network device provided in an embodiment of the present application, such as Figure 8 As shown, the network device 800 includes: a first configuration module 802 and a second configuration module 804. The network device is described below.

[0218] The first configuration module 802 is used to configure the correspondence between the TCI state and the power control parameters for the terminal; the second configuration module 804 is connected to the above-mentioned first configuration module 802, and is used to configure the target transmission configuration indication TCI state used by the uplink signal for the terminal, so that the terminal determines the power control parameters of the uplink signal according to the target TCI state and the correspondence.

[0219] Optionally, as an embodiment, according to the target TCI state, the power control parameters of the uplink signal are configured for the terminal, including: configuring the correspondence between the TCI state and the power control parameters for the terminal; according to the target TCI state, and the correspondence, configuring the power control parameters of the uplink signal for the terminal.

[0220] Optionally, as an embodiment, the correspondence between the TCI state and the power control parameters is configured for the terminal in one of the following ways: the first high-level signaling used to configure the TCI state includes the power control parameters corresponding to the TCI state; the correspondence between the TCI state identification ID of the TCI state configured by the second high-level signaling and the power control parameters is configured for the terminal; the initial correspondence between the TCI state and the power control parameters is configured by radio resource control RRC signaling, and the correspondence between the TCI state and the power control parameters is configured for the terminal; the initial correspondence between the TCI state and the power control parameters is configured by radio resource control RRC signaling, and the initial correspondence is activated or updated by the media access control control unit MAC CE.

[0221] Optionally, as an embodiment, when the uplink signal is SRS and the power control parameter is a closed-loop power control adjustment state, the power control parameter of the uplink signal is configured for the terminal according to the target TCI state, including: the SRS on different SRS resources in an SRS resource set have the same closed-loop power control adjustment state configured according to the target TCI state.

[0222] Optionally, as an embodiment, it also includes: sending a carrier set to the terminal, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts the target TCI state, or, at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state.

[0223] Optionally, as an embodiment, when the uplink signal is a physical uplink shared channel PUSCH, the target TCI state of the uplink signal is configured for the terminal, including: configuring the TCI state indicated by the TCI state indication information in the downlink control information DCI used to schedule PUSCH as the target TCI state.

[0224] Optionally, as an embodiment, the target TCI state is the TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

[0225] Optionally, as an embodiment, when the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule the PUSCH does not contain TCI state indication information or the time interval between the DCI used to schedule the PUSCH and the PUSCH is less than a preset threshold value, the target TCI state adopted by the uplink signal is configured for the terminal, including one of the following: configuring the TCI state with the lowest TCI state identification ID among at least one candidate TCI state for PUSCH transmission activated by the MAC CE as the target TCI state; configuring the first candidate TCI state for PUSCH transmission activated by the MAC CE as the target TCI state; configuring the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI as the target TCI state; configuring the TCI state with the lowest TCI state ID among at least one TCI state configured by the radio resource control RRC as the target TCI state; configuring the TCI state used by the control resource set CORESET where the PDCCH carrying the DCI is located as the target TCI state.

[0226] Optionally, as an embodiment, when the uplink signal is a physical uplink control channel PUCCH, a target TCI state for the uplink signal is configured for the terminal, including at least one of the following: configuring a TCI state for PUCCH transmission activated by a MAC CE as a target TCI state; in the case where no MAC CE is sent to activate the TCI state for PUCCH transmission, configuring the TCI state with the lowest TCI state ID among at least one TCI state configured by RRC as the target TCI state.

[0227] Optionally, as an embodiment, when the uplink signal is a sounding reference signal SRS, a target TCI state adopted by the uplink signal is configured for the terminal, including one of the following: configuring a TCI state for SRS transmission configured by RRC as a target TCI state; configuring a TCI state for SRS transmission indicated by MAC CE as a target TCI state; configuring a TCI state adopted by a preset SRS resource in an SRS resource set where an SR resource carrying SRS is located as a target TCI state.

[0228] Optionally, as an embodiment, in the case that the SRS is a quasi-persistent SRS, the MAC CE is a MAC CE for activating the quasi-persistent SRS.

[0229] Optionally, as an embodiment, in the case where the uplink signal is a non-periodic SRS, configuring a target TCI state of the uplink signal for the terminal includes: configuring the TCI state indicated by the DCI for triggering the non-periodic SRS as the target TCI state.

[0230] Optionally, as an embodiment, when the uplink signal is a physical random access channel PRACH, a target TCI state for the uplink signal is configured for the terminal, including one of the following: configuring a TCI state for PRACH transmission configured by RRC as a target TCI state; configuring a TCI state for PRACH transmission indicated by MAC CE as a target TCI state.

[0231] Optionally, as an embodiment, the TCI state includes at least one of the following information: QCL type, reference source signal, reference service cell, reference bandwidth part BWP.

[0232] Optionally, as an embodiment, the power control parameters include at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

[0233] It should be understood that the above and other operations and / or functions of each unit in the network device according to the embodiment of the present application are respectively to implement Figures 1 to 6 The corresponding processes of the network devices in each method are not described here for the sake of brevity.

[0234] Fig. 9 It is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. Fig. 9 The communication device 500 shown includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0235] Alternatively, if Fig. 9 As shown, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0236] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0237] Alternatively, if Fig. 9 As shown, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0238] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of the antennas may be one or more.

[0239] Optionally, the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement corresponding processes implemented by the network device in each method in the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0240] Optionally, the communication device 500 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0241] Fig.10 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.10 The chip 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0242] Alternatively, if Fig.10 As shown, the chip 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0243] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0244] Optionally, the chip 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0245] Optionally, the chip 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0246] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0247] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0248] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0249] Fig.11 1 is a schematic block diagram of a communication system 10 provided in an embodiment of the present application. Fig.11 As shown, the communication system 10 includes a terminal device 700 and a network device 800 .

[0250] Among them, the terminal device 700 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 800 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0251] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0252] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0253] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0254] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0255] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0256] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0257] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0258] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0259] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0260] The embodiment of the present application also provides a computer program.

[0261] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0262] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0263] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0264] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0265] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0266] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0267] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0268] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0269] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for determining a power control parameter, characterized in that: include: Determine a target transmission configuration indication TCI state adopted by an uplink signal; Determining a power control parameter of the uplink signal according to the target TCI state; A carrier set configured by a receiving network device, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts the target TCI state, or at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state.

2. The method according to claim 1, characterized in that: Determining a power control parameter of the uplink signal according to the target TCI state includes: The power control parameter of the uplink signal is determined according to the target TCI state and the corresponding relationship between the TCI state and the power control parameter.

3. The method according to claim 2, characterized in that Also includes: Determine the correspondence between the TCI state and the power control parameter by at least one of the following methods: The first high-layer signaling used to configure the TCI state includes a power control parameter corresponding to the TCI state; receiving a correspondence between a TCI state identifier ID of the TCI state configured through a second high-layer signaling and a power control parameter, and determining a correspondence between the TCI state and the power control parameter according to the correspondence; The correspondence between the TCI state and the power control parameter is determined through radio resource control RRC signaling and media access control control unit MAC CE, wherein the RRC signaling is used to configure the initial correspondence between the TCI state and the power control parameter, and the MAC CE is used to activate or update the initial correspondence.

4. The method according to claim 1, characterized in that: In a case where the uplink signal is a physical uplink shared channel PUSCH, determining the target TCI state adopted by the uplink signal includes: Determine that the target TCI state is the TCI state indicated by TCI state indication information in downlink control information DCI used to schedule the PUSCH.

5. The method according to claim 4, characterized in that The target TCI state is a TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

6. The method according to claim 1, characterized in that When the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule the PUSCH does not include TCI state indication information or the time interval between the DCI used to schedule the PUSCH and the PUSCH is less than a preset threshold, determining the target TCI state adopted by the uplink signal includes one of the following: Determine that the target TCI state is a TCI state with the lowest TCI state identifier ID among at least one candidate TCI state activated by the MAC CE for PUSCH transmission; Determine that the target TCI state is a first candidate TCI state for PUSCH transmission activated by the MAC CE; Determine that the target TCI state is the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI; Determine that the target TCI state is a TCI state with the lowest TCI state ID among at least one TCI state configured by a radio resource control RRC; Determine that the target TCI state is a TCI state used by a control resource set CORESET where a PDCCH carrying the DCI is located.

7. The method according to any one of claims 1 to 6, characterized in that The TCI status includes at least one of the following information: QCL type, reference source signal, reference serving cell, and reference bandwidth part BWP.

8. The method according to claim 7, characterized in that The power control parameter includes at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

9. A terminal, characterized in that: include: A first determination module is used to determine a target transmission configuration indication TCI state adopted by an uplink signal; A second determination module, configured to determine a power control parameter of the uplink signal according to the target TCI state; A transceiver receives a carrier set configured by a network device, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts the target TCI state, or at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state.

10. The terminal according to claim 9, characterized in that: The second determining module is used for: The power control parameter of the uplink signal is determined according to the target TCI state and the corresponding relationship between the TCI state and the power control parameter.

11. The terminal according to claim 10, characterized in that: The second determining module is used to determine the corresponding relationship between the TCI state and the power control parameter in at least one of the following ways: The first high-layer signaling used to configure the TCI state includes a power control parameter corresponding to the TCI state; receiving a correspondence between a TCI state identifier ID of the TCI state configured through a second high-layer signaling and a power control parameter, and determining a correspondence between the TCI state and the power control parameter according to the correspondence; The correspondence between the TCI state and the power control parameter is determined through radio resource control RRC signaling and media access control control unit MAC CE, wherein the RRC signaling is used to configure the initial correspondence between the TCI state and the power control parameter, and the MAC CE is used to activate or update the initial correspondence.

12. The terminal according to claim 9, characterized in that: In a case where the uplink signal is a physical uplink shared channel PUSCH, determining the target TCI state adopted by the uplink signal includes: Determine that the target TCI state is the TCI state indicated by TCI state indication information in downlink control information DCI used to schedule the PUSCH.

13. The terminal according to claim 12, characterized in that: The target TCI state is a TCI state indicated by the TCI state indication information from at least one candidate TCI state for PUSCH transmission activated by the MAC CE.

14. The terminal according to claim 9, characterized in that: When the uplink signal is a physical uplink shared channel PUSCH, and the DCI used to schedule the PUSCH does not include TCI state indication information or the time interval between the DCI used to schedule the PUSCH and the PUSCH is less than a preset threshold, in determining the target TCI state adopted by the uplink signal, the first determination module is used for one of the following: Determine that the target TCI state is a TCI state with the lowest TCI state identifier ID among at least one candidate TCI state activated by the MAC CE for PUSCH transmission; Determine that the target TCI state is a first candidate TCI state for PUSCH transmission activated by the MAC CE; Determine that the target TCI state is the TCI state indicated by the minimum indication value of the TCI state indication information in the DCI; Determine that the target TCI state is a TCI state with the lowest TCI state ID among at least one TCI state configured by a radio resource control RRC; Determine that the target TCI state is a TCI state used by a control resource set CORESET where a PDCCH carrying the DCI is located.

15. The terminal according to any one of claims 9 to 14, characterized in that: The TCI status includes at least one of the following information: QCL type, reference source signal, reference serving cell, and reference bandwidth part BWP.

16. The terminal according to claim 15, characterized in that: The power control parameter includes at least one of the following: a parameter for determining a target received power, a parameter for determining a path loss weighting factor, a downlink reference signal for path loss measurement, and a parameter for determining a closed-loop power control adjustment state.

17. A network device, characterized in that: include: A first configuration module, used to configure a correspondence between a TCI state and a power control parameter for a terminal; A second configuration module, configured to configure a target transmission configuration indication TCI state adopted by the uplink signal for the terminal, so that the terminal determines a power control parameter of the uplink signal according to the target TCI state and the corresponding relationship; A transceiver, used for sending a carrier set to the terminal, wherein at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set also adopts the target TCI state, or at least one uplink signal of the same type as the uplink signal on each carrier in the carrier set adopts a TCI state that is the same as the TCI state ID of the target TCI state.

18. The network device according to claim 17, characterized in that: The first configuration module configures the correspondence between the TCI state and the power control parameter for the terminal in one of the following ways: The first high-layer signaling used to configure the TCI state includes a power control parameter corresponding to the TCI state; By configuring the correspondence between the TCI state identifier ID of the TCI state and the power control parameter, the correspondence between the TCI state and the power control parameter is configured for the terminal through the second high-layer signaling; The initial correspondence between the TCI state and the power control parameter is configured through radio resource control RRC signaling, and the correspondence between the TCI state and the power control parameter is configured for the terminal by activating or updating the initial correspondence through the media access control control unit MAC CE.

Images