Power control method and device

Abstract

This application is a divisional application of 202180084004.0. An embodiment of the present application provides a power control method and device, the method comprising: determining a valid transmit power control TPC command window according to a preset PDCCH among multiple PDCCHs that are repeatedly transmitted, the preset PDCCH including the first PDCCH or the last PDCCH among multiple PDCCHs, and determining a closed-loop power adjustment state according to the TPC command in the valid TPC command window; determining the transmit power of the uplink signal of the terminal device according to the closed-loop power adjustment state. Determining the preset PDCCH from multiple PDCCHs that are repeatedly transmitted, and determining the valid TPC command window according to the preset PDCCH can avoid the problem that the terminal device cannot determine the valid TPC command window, and controlling the transmit power of the uplink signal according to the valid TPC command window can effectively ensure the accuracy of the closed-loop power control.

Description

[0001] This application is a divisional application. The application number of the parent application is 202180084004.0, the application date is March 22, 2021, and the name of the invention is “Power control method and device”. Technical Field

[0002] The present application relates to the field of communications, and in particular to a power control method and device. Background Art

[0003] Power control has always been a key technology in mobile communication systems. Power control can be divided into uplink power control and downlink power control according to uplink and downlink. By adjusting the uplink power, the system performance can be effectively improved.

[0004] At present, when determining the uplink power in the relevant technology, the effective transmit power control (Transmit Power Control, TPC) command window is usually determined based on the physical downlink control channel (Physical Downlink Control Channel, PDCCH) of the current scheduled uplink signal and the PDCCH of the previous scheduled uplink signal of the same type, and then the transmit power of the uplink signal is determined according to the TPC command in the effective TPC command window.

[0005] However, in the case where the PDCCH used to schedule uplink signals is repeatedly transmitted, the terminal device cannot determine which window to use as the effective TPC command window, and thus cannot guarantee the accuracy of closed-loop power control. Summary of the invention

[0006] The embodiments of the present application provide a power control method and device to avoid the problem of difficulty in meeting the diverse requirements of various networks or operators for measurement priorities.

[0007] In a first aspect, an embodiment of the present application provides a power control method, including:

[0008] Determine an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH, wherein the preset PDCCH includes a first PDCCH or a last PDCCH in the plurality of PDCCHs;

[0009] Determining a closed-loop power adjustment state according to the TPC command in the valid TPC command window;

[0010] The transmission power of the uplink signal of the terminal device is determined according to the closed-loop power adjustment state.

[0011] In a second aspect, an embodiment of the present application provides a power control device, including:

[0012] A determination module, configured to determine an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH, wherein the preset PDCCH includes a first PDCCH or a last PDCCH in the plurality of PDCCHs;

[0013] The determination module is further configured to determine a closed-loop power adjustment state according to a TPC command in the valid TPC command window;

[0014] The determination module is further used to determine the transmission power of the uplink signal of the terminal device according to the closed-loop power adjustment state.

[0015] In a third aspect, an embodiment of the present application provides a terminal device, including:

[0016] Transceivers, processors, memory;

[0017] The memory stores computer-executable instructions;

[0018] The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method described in the first aspect above.

[0019] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer execution instructions, which, when executed by a processor, are used to implement the method described in the first aspect above.

[0020] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method described in the first aspect above.

[0021] The embodiment of the present application provides a power control method and device, the method comprising: determining an effective transmission power control TPC command window according to a preset PDCCH in multiple repeatedly transmitted physical downlink control channels PDCCH, the preset PDCCH including the first PDCCH or the last PDCCH in multiple PDCCHs, and determining a closed-loop power adjustment state according to the TPC command in the effective TPC command window. According to the closed-loop power adjustment state, the transmission power of the uplink signal of the terminal device is determined. When scheduling the repeated transmission of the PDCCH of the uplink signal, the preset PDCCH can be determined from the multiple repeatedly transmitted PDCCHs, and the preset PDCCH

[0022] It can be the first and / or last of multiple PDCCHs that are repeatedly transmitted, and then the valid TPC command window is determined according to the preset PDCCH, thereby avoiding the problem that the terminal device cannot determine the valid TPC command window, and then the transmission power of the uplink signal is controlled according to the valid TPC command window, thereby effectively ensuring the accuracy of the closed-loop power control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a communication scenario provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of an implementation of determining detection resources according to CORESET and search space provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of possible associations between CORSET and search space provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of an implementation of determining a TPC command window in an accumulation mode when no repeated transmission is provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of implementing repeated PDCCH transmission provided in an embodiment of the present application;

[0028] Figure 6 A schematic diagram of an implementation of determining a valid TPC command window in an absolute value mode when no repeated transmission is provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of implementing repeated transmission of a PDCCH carrying a TPC command provided in an embodiment of the present application;

[0030] Figure 8 A flowchart of a power control method provided in an embodiment of the present application;

[0031] Fig. 9 The process of the power control method provided in the embodiment of the present application Figure 2 ;

[0032] Fig.10 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 1 ;

[0033] Fig.11 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 2 ;

[0034] Fig.12Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 3 ;

[0035] Fig.13 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 4 ;

[0036] Fig.14 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 5 ;

[0037] Fig.15 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 6 ;

[0038] Fig.16 The process of the power control method provided in the embodiment of the present application Figure 3 ;

[0039] Fig.17 The process of the power control method provided in the embodiment of the present application Figure 4 ;

[0040] Fig.18 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 1 ;

[0041] Fig.19 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 2 ;

[0042] Fig. 20 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 3 ;

[0043] Fig.21 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 4 ;

[0044] Fig. 22 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 5 ;

[0045] Fig.23 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 6 ;

[0046] Fig.24 The process of the power control method provided in the embodiment of the present application Figure 5 ;

[0047] Fig.25 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 1 ;

[0048] Fig.26 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 2 ;

[0049] Fig. 27 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 3 ;

[0050] Fig.28 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 4 ;

[0051] Fig.29 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 5 ;

[0052] Fig.30 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 6 ;

[0053] Fig.31 A schematic diagram of the structure of a power control device provided in an embodiment of the present application;

[0054] Fig.32 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] To facilitate understanding, the concepts involved in this application are first explained.

[0056] Terminal equipment: It can be a device that includes wireless transceiver functions and can cooperate with network equipment to provide communication services to users. Specifically, terminal equipment can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device. For example, the terminal equipment 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 function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a network after 5G, etc.

[0057] Network equipment: A network equipment may be a device used to communicate with a terminal device, for example, it may be a base station (Base Transceiver Station, BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system, or a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network equipment may be a relay station, an access point, an in-vehicle device, a wearable device, a network-side device in a future 5G network or a network after 5G, or a network device in a future evolved public land mobile network (PLMN) network, etc.

[0058] The network devices involved in the embodiments of the present application may also be referred to as radio access network (RAN) devices. The RAN device is connected to the terminal device, and is used to receive data from the terminal device and send it to the core network device. The RAN device corresponds to different devices in different communication systems, for example, in the 2G system, it corresponds to the base station and the base station controller, in the 3G system, it corresponds to the base station and the radio network controller (Radio Network Controller, RNC), in the 4G system, it corresponds to the evolutionary base station (Evolutional Node B, eNB), and in the 5G system, it corresponds to the access network equipment (e.g., gNB, centralized unit CU, distributed unit DU) in the new radio (New Radio, NR).

[0059] TPC command: The TPC command is used to indicate the adjustment of the uplink power. For example, the TPC command may indicate the power adjustment amount, thereby indicating how much the power is increased, or may indicate how much the power is reduced, or may also indicate that the power remains unchanged.

[0060] Power control: Power control can be divided into open-loop power control and closed-loop power control. Open-loop power control means that the transmitter controls the transmission power based on its own measurement without the need for feedback information from the receiver. Closed-loop power control means that the transmitter controls the transmission power based on the feedback information sent by the receiver.

[0061] Control Resource Set (CORESET): It is a type of time-frequency resource set introduced in NR. UE detects PDCCH in the corresponding control resource set. The control resource set consists of a set of resource element groups (REG).

[0062] Search space: In the LTE system, the search space is defined as a series of control channel element (CCE) resources that need to be blindly detected for each aggregation level, including the starting position of the CCE and the number of candidate resources.

[0063] Common Search Space: A common search space (CSS) is used by all UEs in a cell.

[0064] Dedicated search space: A dedicated search space (UE-specific Search Space) is used by one UE.

[0065] PRB: Physical Resource Block (PRB).

[0066] OFDM: Orthogonal Frequency Division Multiplexing (OFDM).

[0067] Next, combine Figure 1 , the scenarios to which the power control method in this application is applicable are described.

[0068] Figure 1 A schematic diagram of a communication scenario provided in an embodiment of the present application. Figure 1 , including a network device 101 and a terminal device 102, and wireless communication can be performed between the network device 101 and the terminal device 102.

[0069] The network including the network device 101 and the terminal device 102 may also be referred to as a non-terrestrial communication network (NTN), wherein NTN refers to a communication network between a terminal device and a satellite (also referred to as a network device).

[0070] It can be understood that the technical solution of the embodiment of the present application can be applied to NR communication technology, NR refers to a new generation of wireless access network technology, which can be applied to future evolution networks, such as the future fifth generation mobile communication (5G) system. The solution in the embodiment of the present application can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can also be replaced by the names of corresponding functions in other wireless communication networks.

[0071] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0072] The following is an explanation of the relevant technical background of the present application: In the NR system, the network device can schedule uplink signals through PDCCH, or can also send TPC commands to the terminal device through PDCCH. In order to improve the detection efficiency of PDCCH, the terminal device can determine the resources for detecting PDCCH through CORESET and search space configured by the network device. Among them, CORESET is used to determine the frequency domain resource size (such as the number of occupied PRBs) and time domain resource size (such as the number of occupied OFDM symbols) of PDCCH in a time slot. CORESET may include the starting position of frequency domain resources, frequency domain resource length and time domain resource length, etc. The search space is used to determine the time domain resource position of PDCCH. The search space may include the starting position of time domain resources and the monitoring period. Based on a COSRESET and a search space configuration, the terminal can determine the physical resource position for detecting PDCCH. For example, see Figure 2 To understand, Figure 2 A schematic diagram of an implementation of determining detection resources based on CORESET and search space provided in an embodiment of the present application.

[0073] like Figure 2 As shown, currently according to the frequency domain resource starting position and frequency domain resource length in CORESET, for example, it can be determined Figure 2 The size of the frequency domain resources indicated by the shaded part in the figure; and the starting position of the time domain resources indicated by the search space, for example Figure 2 The "starting position: slot 0, symbol 3" shown in Figure 2 The shaded part in the graph indicates the time domain resource size; and the monitoring period indicated by the search space, for example Figure 2 The "monitoring period: 1 time slot" shown in FIG. 1 can determine the periodic detection resources, for example, Figure 2 The multiple shaded areas shown in .

[0074] In the actual implementation process, the network device can configure up to three CORESETs through high-level signaling, and each CORESET has its own CORESET ID. At the same time, the network device can also configure at least one search space through high-level signaling, and the configuration parameters of each search space include the ID of the associated CORESET, the aggregation level, the search space type, etc.

[0075] Among them, the search space type includes the configuration of whether the search space is a common search space CSS or a UE-specific search space USS, and the DCI format that the terminal needs to detect in the search space. If the search space is CSS, the search space type (searchSpaceType) in the search space is configured as Common, and the corresponding DCI format (format) that needs to be detected includes at least one of DCI format20, DCI format 21, DCI format 22, DCI format 23, DCI format00 and DCI format 10, that is, the DCI is generally used for scheduling the transmission of control information. If the search space is USS, the corresponding DCI format that needs to be detected includes DCI format 0_0 and DCI format 1_0 (formats0-0-And-1-0), or includes DCI format 0_1 ​​and DCI format 1_1 (formats0-1-And-1-1), that is, the DCI is generally used for scheduling uplink or downlink data transmission.

[0076] Each search space can only be associated with one CORESET, but a CORESET can be associated with multiple search spaces. For example, see Figure 3 Understand the relationship between CORSET and search space. Figure 3 A possible association diagram of CORSET and search space provided in the embodiment of the present application. Figure 3 As shown, it is assumed that the current configuration includes CORESET1, CORESET2, and CORESET3, wherein CORESET1 may be associated with CSS1 and CSS2, CORESET2 may be associated with CSS1, USS1, and USS2, and CORESET3 may be associated with USS1, USS2, and USS3. Figure 3 As can be seen, a search space is associated with only one CORESET, but a CORESET can be associated with multiple search spaces.

[0077] Based on the above introduction, several possible implementations of uplink power control are introduced below. In this embodiment, the uplink signal may include: Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS). The transmit power of PUSCH can be calculated by the following formula 1:

[0078]

[0079] Among them, P CMAX,f,c (i) is the maximum transmit power of the terminal device on the current carrier, is the bandwidth of the PUSCH resource, i is the index of a PUSCH transmission; j is the open-loop power control 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 state, where l is the index of the closed-loop power control adjustment state.

[0080] Among them, the terminal device can determine the closed-loop power adjustment state according to the TPC command sent by the network device. In one possible implementation method, the TPC command can be carried by the DCI used to schedule the PUSCH in the UE search space, or it can also be carried by the DCI format 2_2 used to carry the group TPC command in the common search space.

[0081] The closed-loop power control adjustment states corresponding to different closed-loop power control adjustment state indexes are calculated independently, so that different PUSCH transmit powers can be obtained. In addition, the PUCCH transmit power can be calculated by the following formula:

[0082]

[0083] Among them, P CMAX,f,c (i) is the maximum transmit power of the terminal on the current carrier, is the bandwidth of the PUCCH resource, i is the index of a PUCCH transmission; q u is the target power P O_PUCCH,b,f,c The index of 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 );g b,f,c (i,l) is the closed-loop power control adjustment state, where l is the index of the closed-loop power control adjustment state.

[0084] Similarly, the terminal device can determine the closed-loop power adjustment state based on the TPC command sent by the network device. In one possible implementation method, the TPC command can be carried by the DCI in the UE search space for scheduling the PDSCH corresponding to the PUCCH, or by the DCI format 2_2 in the common search space for carrying the group TPC command.

[0085] The closed-loop power control adjustment states corresponding to different closed-loop power control adjustment state indexes are calculated independently, so that different PUCCH transmit powers can be obtained.

[0086] And, the transmission power of SRS can be calculated by the following formula 3:

[0087]

[0088] Among them, P CMAX,f,c (i) is the maximum transmit power of the terminal on the current carrier, M SRS,b,f,c (i) is the bandwidth of the SRS resource, i is the index of an SRS transmission, and q s Represents an SRS resource set, with a target power P O_SRS,b,f,c (q s ) and the path loss factor α SRS,b,f,c (q s ) is the SRS resource collection q s The corresponding open-loop power control parameter; 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 state, where l is the index of the closed-loop power control adjustment state, and different closed-loop power control adjustment state indices correspond to independent closed-loop power control adjustment states.

[0089] Among them, the target power P O_SRS,b,f,c (q s ), path loss factor α SRS,b,f,c (q s ) and q d It is included in the configuration parameters of the SRS resource set and is configured to the terminal through high-level signaling.

[0090] Closed loop power regulation state h b,f,c (i, l) can reuse the closed-loop power control adjustment state of PUSCH, or use an independent closed-loop power control adjustment state, depending on the Radio Resource Control (RRC) configuration.

[0091] In a possible implementation, if the RRC signaling configures SRS and PUSCH to use the same closed-loop power control adjustment state, the index l of the reused PUSCH closed-loop power control adjustment state may be configured, that is, h b,f,c (i,l)=f b,f,c (i,l).

[0092] In another possible implementation, if the high-level signaling configures SRS and PUSCH to adopt independent closed-loop power control adjustment states, the network device can indicate the TPC command of the SRS of each terminal device through DCI format 2_3 in the common search space, and the terminal determines the closed-loop power control adjustment state according to the TPC command. Then the closed-loop power control adjustment state currently determined according to the TPC command is independent of the closed-loop power control adjustment state of PUSCH, and at this time the terminal device can only support a closed-loop power control adjustment state independent of PUSCH.

[0093] Furthermore, the network device may configure, through high-level signaling, whether the current independent closed-loop power control adjustment state adopts an accumulation mode or an absolute value mode.

[0094] In a possible implementation, if the accumulation mode is adopted, the closed-loop power control adjustment state needs to accumulate the adjustment value indicated by the TPC command received within a certain time window based on the previous value. Taking PUSCH as an example, for example, the accumulation mode can be understood by referring to the following formula 4:

[0095]

[0096] Among them, h b,f,c (i) is the current closed-loop power control adjustment state determined after accumulation, h b,f,c (i-i0) is the previous closed-loop power control adjustment state, si Can indicate the time window, δ SRS,b,f,c(m) It can be the adjustment value indicated by the TPC command within the time window, then It is the accumulation of adjustment values ​​indicated by TPC commands received within a certain time window.

[0097] In another possible implementation, if the absolute value mode is adopted, the closed-loop power control adjustment state is directly equal to the adjustment value indicated by the TPC command most recently received some time ago. Taking SRS as an example, for example, the absolute value mode can be understood by referring to Formula 5 as shown in FIG.:

[0098] h b,f,c (i) = δ SRS,b,f,c(i) Formula 5

[0099] Among them, δ SRS,b,f,c(i) is the adjustment value indicated by the TPC command most recently received some time ago, hb,f,c (i) is the currently determined closed-loop power adjustment state.

[0100] Based on the above introduction, it can be determined that the closed-loop power control adjustment state can be determined by the TPC command, and then the transmission power of the uplink information can be determined according to the closed-loop power control adjustment state. Therefore, it is particularly important to determine the control of the uplink power by the TPC command.

[0101] At present, when determining the TPC command, the effective TPC command window is usually determined first, and then the TPC command is determined in the effective TPC command window. The following introduces the possible implementation methods for determining the effective TPC command window, taking the uplink signal being PUSCH as an example. In one possible implementation method, in the accumulation mode, for the DCI-scheduled PUSCH, the window between the first OFDM symbol after the most recent DCI used to schedule PUSCH and the last OFDM symbol of the DCI currently used to schedule PUSCH can be determined as the effective TPC command window, and then the uplink power is determined according to the TPC command in the effective TPC command window. For example, it can be combined with Figure 4 To understand, Figure 4 A schematic diagram of an implementation of determining a TPC command window in an accumulation mode without repeated transmission provided in an embodiment of the present application.

[0102] like Figure 4 As shown, assuming that there is currently For scheduling And the current DCI i , DCI i Used to schedule PUSCH i , Figure 4 K PUSCH (i-i0)-1 is The first symbol after The number of symbols between the first symbol of PUSCH (i) DCI i The last symbol and PUSCH i The number of symbols between the first symbol of Figure 4 PUSCH shown in i The effective command window is K before the PUSCH transmission timing i-i0 PUSCH (i-i0)-1 symbol, K before PUSCH transmission timing i PUSCH(i) symbols. Wherein, i-i0 is the transmission opportunity for transmitting PUSCH most recently before the transmission opportunity i of PUSCH. Based on the above introduction, it can be determined that in the accumulation mode, for PUSCH scheduled by DCI, when determining the effective TPC command window, the window between the first symbol after the PDCCH that schedules the same type of uplink signal most recently before the PDCCH that schedules the current uplink signal (that is, the last OFDM symbol of the PDCCH is before the last OFDM symbol of the PDCCH that schedules the PUSCH) and the last symbol of the PDCCH used to schedule the current uplink signal can be determined as the effective TPC command window. However, if a DCI used to schedule PUSCH transmission is carried by a repeatedly transmitted PDCCH, that is, the PDCCH carrying the same control information is repeatedly sent multiple times, and the repeatedly sent PDCCH schedules the same PUSCH, that is, the PDCCH carrying the DCI is repeatedly sent at different times, then which PDCCH is specifically used to determine the window of effective TPC commands is a problem that needs to be solved.

[0103] For example, you can combine Figure 5 To understand, Figure 5 A schematic diagram of the implementation of PDCCH repeated transmission provided in an embodiment of the present application.

[0104] like Figure 5 As shown, assuming that there is currently For scheduling And the current DCI i , DCI i Used to schedule PUSCH i , where DCI i The transmission is repeated twice. Based on the above introduction, it can be determined that it is necessary to i The last symbol of the current DCI determines the effective TPC command window, but the current DCI i If the transmission is repeated twice, it is impossible to determine whether the first DCI is used. i Determine the effective TPC command window or use the second DCI i Determine the TPC effective command window.

[0105] After determining the valid TPC command window, the closed-loop power adjustment state can be determined according to the TPC command in the valid TPC command window. However, if the DCI containing the TPC command in the valid TPC command window is also carried by the repeatedly transmitted PDCCH, then which PDCCH carries the TPC command to use to determine the uplink transmission power is also a problem that needs to be solved.

[0106] The above describes the problem of determining the effective TPC command window and the effective TPC for the DCI-scheduled PUSCH in the accumulation mode. In another possible implementation, the closed-loop power adjustment can also schedule the PUSCH through high-level signaling (Configured Grant) in the absolute value mode.

[0107] In this case, the terminal device will PUSCH The most recent TPC command before (i) OFDM symbols is used to determine the closed-loop power adjustment state.

[0108] For example, you can refer to Figure 6 , Figure 6 A schematic diagram of an implementation of determining a valid TPC command window in an absolute value mode without repeated transmission provided in an embodiment of the present application.

[0109] Current DCI i Used to schedule PUSCH i , the terminal device can use PUSCH i Before K PUSCH (i) The window before OFDM symbols is determined as PUSCH i The effective TPC command window may include multiple DCIs, for example Figure 6 The DCI shown in i-1 、DCI i Specifically, according to the last DCI in this window i The TPC command contained in determines the closed-loop power adjustment state.

[0110] However, if the DCI containing the most recent TPC command is carried by a PDCCH that is repeatedly transmitted, and part of the repeated transmission of the PDCCH is not within the valid window, for example, Figure 7 understand, Figure 7 A schematic diagram of the implementation of repeated transmission of a PDCCH carrying a TPC command provided in an embodiment of the present application.

[0111] like Figure 7 As shown, currently according to K PUSCH (i) PUSCH is determined i The effective TPC command window includes a DCI for indicating a TPC command. i , but DCI i The transmission is repeated twice, one of which is in the valid TPC command window and the other is not in the valid TPC command window. In this case, the terminal cannot determine the DCI. i Indicates whether the TPC command can be used for PUSCH transmission.

[0112] In summary, when PDCCH is repeatedly transmitted, the terminal device cannot determine the valid TPC command window, or the terminal device cannot determine whether the TPC command in the valid TPC command window is available, thereby failing to ensure the accuracy of closed-loop power control.

[0113] In response to the problems in the prior art, the present application proposes the following technical concept: when the PDCCH that schedules the uplink signal is repeatedly transmitted, or when the PDCCH that carries the TPC command of the uplink signal is repeatedly transmitted, the terminal device can determine a reference PDCCH from the repeatedly transmitted PDCCH, which is used to determine the TPC accumulation window and / or the effective TPC in the TPC accumulation window, thereby effectively ensuring the accuracy of closed-loop power control.

[0114] Based on the above introduction, the power control method provided by the present application is introduced below in combination with specific embodiments. Figure 8 A flowchart of a power control method provided in an embodiment of the present application.

[0115] like Figure 8 As shown, the method includes:

[0116] S801. Determine an effective transmit power control TPC command window according to a preset PDCCH among a plurality of repeatedly transmitted physical downlink control channels PDCCH, where the preset PDCCH includes the first PDCCH or the last PDCCH among the plurality of PDCCHs.

[0117] In this embodiment, the multiple PDCCHs that are repeatedly transmitted may include, for example, a first PDCCH that is repeatedly transmitted, wherein the first PDCCH is a PDCCH for scheduling uplink signals, and / or the multiple PDCCHs that are repeatedly transmitted may also include a second PDCCH that is repeatedly transmitted, wherein the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the PDCCH that schedules the uplink signal. In this embodiment, the uplink signal may include, for example, at least one of the following: PUSCH, PUCCH, SRS. It can be understood that the PDCCH that schedules the same type of uplink signals introduced above means that the type of uplink signals is consistent.

[0118] For example, if the current first PDCCH is a PSCCH for scheduling PUSCH, then the second PDCCH is the PDCCH for scheduling the most recent PUSCH before scheduling PUSCH, that is, PUSCH is one type, PUCCH is another type, and SRS is another type. When determining the second PDCCH, it is necessary to ensure that the type of the uplink signal scheduled by the second PDCCH is consistent with the type of the uplink signal scheduled by the first PDCCH. Based on the above introduction, it can be determined that in the accumulation mode, the effective TPC command window can be determined based on the second PDCCH and the first PDCCH, and when the first PDCCH is repeatedly transmitted, and / or when the second PDCCH is repeatedly transmitted, the effective TPC command window can be determined based on the preset PDCCH in the repeatedly transmitted PDCCH.

[0119] The preset PDCCH may include the first PDCCH or the last PDCCH among multiple PDCCHs that are repeatedly transmitted.

[0120] In one possible implementation, for example, if the current first PDCCH is a repeated transmission and the second PDCCH is a single transmission, then, for example, the valid TPC command window may be determined based on the second PDCCH and the first PDCCH in the repeated transmission; or, the valid TPC command window may also be determined based on the last PDCCH in the repeated transmission and the second PDCCH. In another possible implementation, for example, if the current second PDCCH is a repeated transmission and the first PDCCH is a single transmission, then, for example, the valid TPC command window may be determined based on the first PDCCH in the repeated transmission and the first PDCCH; or, the valid TPC command window may also be determined based on the last PDCCH in the repeated transmission and the first PDCCH. In another possible implementation, for example, if the current first PDCCH and the second PDCCH are both repeatedly transmitted, then the valid TPC command window can be determined, for example, based on the first PDCCH in the second PDCCH that is repeatedly transmitted, and the first PDCCH in the first PDCCH that is repeatedly transmitted; or, the valid TPC command window can also be determined based on the last PDCCH in the second PDCCH that is repeatedly transmitted, and the last PDCCH in the first PDCCH that is repeatedly transmitted. In this embodiment, by indicating that the valid TPC command window is determined according to a preset PDCCH in multiple PDCCHs that are repeatedly transmitted, wherein the preset PDCCH can be the first PDCCH or the last PDCCH in multiple PDCCHs, the valid TPC command window can be determined when the PDCCH is repeatedly transmitted.

[0121] S802: Determine a closed-loop power adjustment state according to a TPC command in a valid TPC command window.

[0122] If a TPC command can be included in the TPC valid command window, the closed-loop power adjustment state can be determined according to the TPC command in the valid TPC command window. The implementation method can refer to the implementation method of determining the closed-loop power adjustment state in the accumulation mode and the absolute value mode described in the above embodiment, which will not be repeated here. In a possible implementation method, the PDCCH used to carry the TPC command may also be repeatedly transmitted, so it may appear that part of the PDCCH carrying the TPC command is in the valid TPC command window, and part of the PDCCH is not in the valid TPC command window. In this case, the terminal device cannot determine whether to use this TPC command to determine the closed-loop power adjustment state. In this case, for example, whether the first PDCCH in the PDCCH carrying the repeatedly transmitted TPC command is in the valid TPC command window can be used to determine the closed-loop power adjustment state; or whether the TPC command can be used for the closed-loop power adjustment state can be determined according to whether the last PDCCH is in the valid TPC command window.

[0123] S803: Determine the transmission power of the uplink signal of the terminal device according to the closed-loop power adjustment state.

[0124] After determining the closed-loop power adjustment state, the transmit power of the uplink signal of the terminal device can be determined according to the calculation method of the transmit power of each uplink signal introduced above. The power control method provided in the embodiment of the present application includes: determining the effective transmit power control TPC command window according to the preset PDCCH in the multiple physical downlink control channels PDCCHs that are repeatedly transmitted, the preset PDCCH includes the first PDCCH or the last PDCCH in the multiple PDCCHs, and determining the closed-loop power adjustment state according to the TPC command in the effective TPC command window. According to the closed-loop power adjustment state, the transmit power of the uplink signal of the terminal device is determined. When scheduling the repeated transmission of the PDCCH of the uplink signal, the preset PDCCH can be determined from the multiple PDCCHs that are repeatedly transmitted, and the preset PDCCH can be the first and / or the last of the multiple PDCCHs that are repeatedly transmitted, and then the effective TPC command window is determined according to the preset PDCCH, so as to avoid the problem that the terminal device cannot determine the effective TPC command window, and then the transmit power of the uplink signal is controlled according to the effective TPC command window, so as to effectively ensure the accuracy of the closed-loop power control.

[0125] On the basis of the above embodiments, it can be determined that the uplink signal can be PUSCH, or PUCCH, or SRS, and the closed-loop power adjustment state can be an accumulation mode or an absolute value mode. The following is combined with specific embodiments to introduce various possible implementation methods for controlling uplink power. First, various possible implementation methods for uplink signals being PUSCH are introduced: In one possible implementation method, the closed-loop power adjustment state can be an accumulation mode, for example, the network device configures the current closed-loop power control state of the terminal device to an accumulation mode through high-level signaling. The following is combined with Figures 9 to 16 The implementation method of uplink power control is introduced when the uplink signal is PUSCH and the closed-loop power adjustment state is the accumulation mode. Fig. 9 The process of the power control method provided in the embodiment of the present application Figure 2 , Fig.10 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 1 , Fig.11 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 2 , Fig.12 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 3 , Fig.13 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 4 , Fig.14 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 5 , Fig.15 Implementation diagram of determining the effective TPC command window for PUSCH in the accumulation mode provided in the embodiment of the present application Figure 6 , Fig.16 A schematic diagram of an implementation of determining a valid TPC command for a PUSCH in an accumulation mode provided in an embodiment of the present application.

[0126] S901. The terminal device determines a valid TPC command window for a PUSCH in an accumulation mode.

[0127] In the current situation, the first PDCCH is a PDCCH for scheduling PUSCH, and the second PDCCH is a PDCCH for scheduling PUSCH most recently before the PDCCH for scheduling PUSCH. When determining the valid TPC command window, for example, there may be the following possible implementations.

[0128] In one implementation, the multiple PDCCHs that are repeatedly transmitted may include only the first PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the PUSCH is configured with repetition.

[0129] In the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH may be determined as the valid TPC command window.

[0130] For example, you can refer to Fig.10 To understand, such as Fig.10 As shown, there is currently For scheduling And the current DCI i , DCI i Used to schedule PUSCH i , DCI i-i0 It is used to schedule PUSCH i DCI i The most recent DCI for scheduling PUSCH, PDCCH is used to carry DCI, so DCI i The corresponding one is the first PDCCH. The corresponding one is the second PDCCH.

[0131] Among them, DCI i Repeated transmission twice, see Fig.10 , currently you can The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0132] Alternatively, in the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH may also be determined as the valid TPC command window.

[0133] For example, you can refer to Fig.11 To understand, such as Fig.11 As shown, the meaning of each parameter and Fig.10 Same, among which, DCI i Repeated transmission twice, see Fig.11 , currently you can The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in iThe window between the last OFDM symbol is determined as the valid TPC command window.

[0134] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include only the second PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the PUSCH most recently before the PDCCH that schedules the PUSCH is configured with repetition.

[0135] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH can be determined as the valid TPC command window.

[0136] For example, you can refer to Fig.12 To understand, such as Fig.12 As shown, the meaning of each parameter and Fig.10 The same, among which, Repeated transmission twice, see Fig.12 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and DCI i The window between the last OFDM symbol is determined as the valid TPC command window.

[0137] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH may also be determined as the valid TPC command window.

[0138] For example, you can refer to Fig.13 To understand, such as Fig.13 As shown, the meaning of each parameter and Fig.10 The same, among which, Repeated transmission twice, see Fig.13 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and DCI i The window between the last OFDM symbol is determined as the valid TPC command window.

[0139] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include both a first PDCCH that is repeatedly transmitted and a second PDCCH that is repeatedly transmitted, that is, both are configured with repetition.

[0140] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH can be determined as the valid TPC command window.

[0141] For example, you can refer to Fig.14 To understand, such as Fig.14 As shown, the meaning of each parameter and Fig.10 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig.14 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0142] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH can also be determined as the valid TPC command window.

[0143] For example, you can refer to Fig.15 To understand, such as Fig.15 As shown, the meaning of each parameter and Fig.10 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig.15 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0144] The above combination Figures 10 to 14 Several possible implementations of determining a valid TPC command window when the uplink signal is PUSCH in the accumulation mode are introduced, which can be described as follows:

[0145] The window is between K PUSCH(i-i0)-1symbols before PUSCH transmissionoccasion i-i0and K PUSCH (i)symbols before PUSCH transmission occasionion activeUL BWP bof carrierfof serving cell c for PUSCH power control adjustment statel,where i0>0is the smallest integer for which K PUSCH (i-i0)symbols before PUSCHtransmission occasion i-i0 is earlier than K PUSCH (i)symbols before PUSCHtransmission occasion i.If a PUSCH transmission is scheduled by a DCI format,K PUSCH (i) is a number of symbols for active UL BWP b of carrier f of servingcell c after a last symbol of a corresponding PDCCH reception and before a first symbol of the PUSCH transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCH repetitionsis applied.

[0146] (On the activated uplink BWP b of carrier f of serving cell c, for PUSCH power control adjustment state l, the effective TPC command window is K before PUSCH transmission i-i0 PUSCH (i-i0)-1 symbol (i.e., the first OFDM symbol after the PDCCH that schedules PUSCH transmission i-i0) and K before PUSCH transmission i PUSCH(i) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUSCH transmission i), where i0>0 satisfies the K before PUSCH transmission i-i0. PUSCH (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUSCH transmission i-i0) before PUSCH transmission i PUSCH The smallest positive integer before (i) symbol (i.e., the last OFDM symbol of the PDCCH that schedules PUSCH transmission i). If the PUSCH transmission is scheduled via DCI format, then K PUSCH (i) is the number of symbols between the last symbol received for the corresponding PDCCH and the first symbol transmitted for the PUSCH. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH in the repeatedly transmitted PDCCH is applied.)

[0147] That is, if the PDCCH used to determine the effective TPC command window is configured with repeated transmission, the first PDCCH (the first transmitted PDCCH) or the last PDCCH (the last transmitted PDCCH) in the repeatedly transmitted PDCCH is used to determine the effective TPC command window.

[0148] And in this embodiment, when the terminal device determines the TPC valid command window, it needs to determine the second PDCCH, so it needs to determine whether a PDCCH is the PDCCH that schedules another PUSCH most recently before the PDCCH that schedules the PUSCH. If the PDCCH that schedules the PUSCH and the PDCCH that schedules another PUSCH most recently are not configured with repeated transmission, the judgment can be made directly.

[0149] However, if the PDCCH that schedules the PUSCH or the PDCCH that most recently schedules another PUSCH is configured for repeated transmission, the terminal needs to determine one PDCCH from the multiple PDCCHs that are repeatedly transmitted for the above determination process.

[0150] For example, the terminal device can use the first or last PDCCH sent among the multiple PDCCHs that are repeatedly transmitted for the above judgment. In a possible implementation, if the PDCCH that schedules another PUSCH before the PDCCH that schedules the PUSCH is one of the multiple PDCCHs that are repeatedly transmitted, that is, it is configured for repeated transmission, then, for example, the above judgment can be made based on the last PDCCH among the multiple PDCCHs that are repeatedly transmitted. If the last PDCCH is before the first PDCCH, it can be determined that the PDCCH can be used as the second PDCCH for determining the valid TPC command window; otherwise, the PDCCH cannot be used to determine the valid TPC command window, and the terminal needs to use other PDCCHs that meet the conditions as the second PDCCH. Alternatively, the above judgment can also be made based on the first PDCCH among the multiple PDCCHs that are repeatedly transmitted, then it is only necessary to determine that the first PDCCH is before the first PDCCH, that is, any one of the multiple PDCCHs that are repeatedly transmitted can be used as the second PDCCH before the first PDCCH to determine the valid TPC command window.

[0151] In another possible implementation, if the multiple PDCCHs that are repeatedly transmitted include the first PDCCH that is repeatedly transmitted, that is, the first PDCCH is configured for repeated transmission, then the above judgment can be made, for example, based on the first PDCCH in the first PDCCH that is repeatedly transmitted. Then, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH that is repeatedly transmitted.

[0152] Alternatively, the above judgment can be made based on the last PDCCH in the repeatedly transmitted first PDCCH. In this case, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the repeatedly transmitted first PDCCH. In other words, the second PDCCH only needs to be before any of the repeatedly transmitted first PDCCHs.

[0153] S902: Determine a closed-loop power adjustment state of a PUSCH according to a TPC command in a valid TPC command window.

[0154] In this embodiment, the valid TPC command window includes a TPC command. In the accumulation mode, the adjustment value indicated by the TPC command in the TPC command window needs to be accumulated to determine the closed-loop power adjustment state of the PUSCH. However, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, the terminal device needs to determine whether the TPC command is in the valid TPC command window, that is, it needs to determine whether the current TPC command can be used to determine the closed-loop power adjustment state.

[0155] In this embodiment, the TPC command carried by multiple PDCCHs for repeated transmission is called the first TPC command. Then, whether the first TPC command is in the valid TPC command window can be determined based on whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs for carrying the repeated transmission of the first TPC command.

[0156] In a possible implementation, if the third PDCCH is in the valid TPC command window, it is determined that the first TPC command is in the valid TPC command window. Then the current first TPC command can be used to determine the closed-loop power adjustment state, specifically, the adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC command other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state can be added to obtain the current closed-loop power adjustment state.

[0157] For example, please refer to the following formula 6 for understanding:

[0158] Among them, f b,f,c (i-i0,l) is the previous closed-loop power adjustment state, f b,f,c (i,l) is the current closed-loop power adjustment state, δ PUSCH,b,f,c(m,l) is the adjustment value indicated by the TPC command in the valid TPC command window, D iis a TPC command in a valid TPC command window. In another possible implementation, if the third PDCCH is not in the valid TPC command window, it is determined that the first TPC command is not in the valid TPC command window. Then the current first TPC command is not used to determine the closed-loop power adjustment state. That is to say, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, when the terminal device determines whether the TPC command can be used for closed-loop power adjustment, it makes a judgment based on whether the first PDCCH sent (i.e., the first PDCCH) is in the valid TPC command window, or, it makes a judgment based on whether the last PDCCH sent (i.e., the last PDCCH) is in the window. Alternatively, as long as any one of the PDCCHs is in the valid TPC command window, the TPC command can be used to determine the closed-loop power adjustment state.

[0159] It can be described as follows: is thePUSCH power control adjustment state l for active UL BWP b of carrier f ofserving cell c and PUSCH transmission occasion iif the UE is not providedtpc-Accumulation,where

[0160] -Theδ PUSCH,b,f,c values ​​are given in Table 7.1.1-1.

[0161] - is a sum of TPC command values ​​in a set D i of TPCcommand values ​​with cardinality that the UE receives between K PUSCH (i-i0)-1symbols before PUSCH transmission occasion i-i0 and K PUSCH(i) Symbols before PUSCH transmission occasion i on active UL BWP b of carrier f of serving cell c for PUSCH power control adjustment state l, where i0>0 is the smallest integer for which K PUSCH (i - i0) Symbols before PUSCH transmission occasion i - i0 is earlier than K PUSCH (i) Symbols before PUSCH transmission occasion i. If repetition is configured to the PDCCH carrying TPC command, only the first PDCCH or the last PDCCH among PDCCH repetitions is applied for calculation of δ PUSCH,b,f,c(m,l) , or is applied to determine whether the TPC command is accumulated.

[0162] - If a PUSCH transmission is scheduled by a DCI format, K PUSCH (i) is a number of symbols for active UL BWP b of carrier f of serving cell c after a last symbol of a corresponding PDCCH reception and before a first symbol of the PUSCH transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCH repetitions is applied.

[0163] (If the UE is configured with the TPC accumulation mode, then is the PUSCH power control adjustment state l on the activated uplink BWP b of carrier f of serving cell c and the closed-loop power control adjustment state corresponding to PUSCH transmission i, where:

[0164] -δ PUSCH,b,f,c The value is obtained according to Table 7.1.1-1.

[0165] - Is a cardinality The TPC command value set D i The sum of the command values ​​indicated by the TPC commands in the PUSCH power control adjustment state l, where the base is the K of the UE before PUSCH transmission i-i0 PUSCH (i-i0)-1 symbol (i.e., the first OFDM symbol after the PDCCH that schedules PUSCH transmission i-i0) and the K symbol before PUSCH transmission i PUSCH The TPC command received between (i) symbols (i.e., the last OFDM symbol of the PDCCH scheduling PUSCH transmission i). Where i0>0 satisfies the K before PUSCH transmission i-i0. PUSCH (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUSCH transmission i-i0) before PUSCH transmission i PUSCH The smallest positive integer before (i) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUSCH transmission i). If the PDCCH carrying the TPC command is configured for repeated transmission, only the first PDCCH in the PDCCH repetition or the last PDCCH in the PDCCH repetition is applied. , or is applied to determine whether TPC commands are accumulated.

[0166] - If PUSCH transmission is scheduled via DCI format, K PUSCH (i) The number of symbols between the last symbol received for the corresponding PDCCH and the first symbol transmitted for the PUSCH. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH in the repeatedly transmitted PDCCH is applied.)

[0167] S903: Determine the transmit power of the PUSCH according to the closed-loop power adjustment state.

[0168] After determining the closed-loop power adjustment state of the PUSCH, the transmit power of the PUSCH can be determined according to the processing method of the accumulation mode introduced in the above embodiment. The specific implementation method can refer to the introduction of the above embodiment and will not be repeated here.

[0169] The power control method provided in the embodiment of the present application can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals or a PDCCH that carries an uplink signal TPC command for repeated transmission. The terminal device can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals to obtain a valid window for TPC. It can also determine a reference PDCCH from multiple PDCCHs that carry TPC commands to determine whether the TPC is within the valid window. This can effectively ensure the accuracy of the closed-loop power control of the PUSCH in the accumulation mode. The above embodiment introduces an implementation method in which the closed-loop power adjustment state is an accumulation mode. In another possible implementation method, the closed-loop power adjustment state can also be an absolute value mode. For example, the network device configures the current closed-loop power control state of the terminal device to an absolute value mode through high-level signaling. The following is combined with Fig.16 The implementation method of uplink power control is introduced when the uplink signal is PUSCH and the closed-loop power adjustment state is absolute value mode. Fig.16 The process of the power control method provided in the embodiment of the present application Figure 3 .

[0170] like Fig.16 As shown, the method includes:

[0171] S1601. The terminal device determines a valid TPC command window for PUSCH in absolute value mode.

[0172] In this embodiment, PUSCH can be scheduled by high-level signaling. In the current case, when determining the valid TPC command window, the window before a preset number of symbols before the uplink signal can be determined as the valid TPC command window, wherein the preset number is the number of OFDM symbols in a time slot multiplied by a first value, and the first value is configured by the radio resource control RRC signaling.

[0173] For example, the K of PUSCH can be PUSCH,min The window before K symbols is taken as the effective TPC command window, where K PUSCH,min It is equal to the number of OFDM symbols in a time slot multiplied by the first value k2, where k2 is the value configured by RRC signaling.

[0174] For example, the number of OFDM symbols in a time slot is 14, and k2 is the minimum value of k2 configured in the high-level signaling PUSCH-ConfigCommon. PUSCH,min The TPC command sent symbols ago can be used to determine the closed-loop power adjustment state of the PUSCH.

[0175] S1602: Determine a closed-loop power adjustment state of a PUSCH according to a TPC command in a valid TPC command window.

[0176] In this embodiment, in the absolute value mode, it is necessary to determine the closed-loop power adjustment state of the PUSCH based on the last TPC command in the valid TPC command window, but if the last TPC command is carried by multiple PDCCHs that are repeatedly transmitted, the terminal device needs to determine whether the last TPC command can be used to determine the closed-loop power adjustment state.

[0177] In this embodiment, the last TPC command in the valid TPC command window is called the second TPC command. If the second TPC command is carried by multiple repeatedly transmitted PDCCHs, then whether the second TPC command can be used to determine the closed-loop power adjustment state can be determined based on whether the fourth PDCCH is in the valid TPC command window, wherein the fourth PDCCH is the first PDCCH among multiple PDCCHs used to carry the repeated transmission of the second TPC command, or the fourth PDCCH is the last PDCCH among multiple PDCCHs used to carry the repeated transmission of the second TPC command, or the fourth PDCCH is any one of the multiple PDCCHs used to carry the repeated transmission of the second TPC command.

[0178] In one possible implementation, if the fourth PDCCH is in the valid TPC command window, it is determined that the second TPC command can be used to determine the closed-loop power adjustment state. Specifically, the adjustment value indicated by the second TPC command can be determined as the current closed-loop power adjustment state. In another possible implementation, if the fourth PDCCH is not in the valid TPC command window, it is determined that the second TPC command is not used to determine the closed-loop power adjustment state. At this time, the terminal device needs to use another TPC command corresponding to the fourth PDCCH in the valid TPC command window to determine the closed-loop power adjustment state. Alternatively, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, it is also possible to determine whether the TPC command is in the valid TPC command window based on whether the first PDCCH or the last PDCCH among the multiple PDCCHs is in the valid TPC command window. The implementation method is similar to that described above and will not be repeated here.

[0179] After the determination is completed, the closed-loop common power adjustment state is determined according to the last TPC command in the valid TPC command window.

[0180] That is to say, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, when the terminal device determines whether the last TPC command in the valid TPC command window can be used for closed-loop power adjustment, it makes a judgment based on the first PDCCH sent among them, or makes a judgment based on the last PDCCH sent among them. Alternatively, as long as any one of the PDCCHs is within the valid TPC command window, the TPC command can be used to determine the closed-loop power adjustment state.

[0181] S1603: Determine the transmit power of the PUSCH according to the closed-loop power adjustment state.

[0182] After determining the closed-loop power adjustment state of the PUSCH, the transmit power of the PUSCH can be determined according to the processing method of the absolute value mode introduced in the above embodiment. The specific implementation method can refer to the introduction of the above embodiment and will not be repeated here.

[0183] The power control method provided in the embodiment of the present application can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals or a PDCCH that carries an uplink signal TPC command for repeated transmission. The terminal device can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals to obtain a valid window for TPC, and can also determine a reference PDCCH from multiple PDCCHs that carry TPC commands to determine whether the TPC is within the valid window, thereby effectively ensuring the accuracy of the closed-loop power control of PUSCH in the absolute value mode. The above introduces various possible implementations in which the uplink signal is PUSCH, and then introduces various possible implementations in which the uplink signal is PUCCH. In one possible implementation, the closed-loop power adjustment state can be an accumulation mode, for example, the network device configures the current closed-loop power control state of the terminal device to an accumulation mode through high-level signaling.

[0184] Combine the following Figures 17 to 23 The implementation method of uplink power control is introduced when the uplink signal is PUCCH and the closed-loop power adjustment state is the accumulation mode. Fig.17 The process of the power control method provided in the embodiment of the present application Figure 4 , Fig.18 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 1 , Fig.19 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 2 , Fig. 20 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 3 , Fig.21 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 4 , Fig. 22 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 5 , Fig.23 Implementation diagram of determining the effective TPC command window for PUCCH in the accumulation mode provided in the embodiment of the present application Figure 6 .

[0185] S1701. The terminal device determines a valid TPC command window for PUCCH in accumulation mode.

[0186] In this embodiment, if one PDCCH schedules one PUCCH, the PUCCH carries HARQ-ACK information corresponding to the PDSCH scheduled by the PDCCH, and the resources of the PUCCH are indicated by the PDCCH.

[0187] In the current situation, the first PDCCH is a PDCCH for scheduling PUCCH, and the second PDCCH is a PDCCH for scheduling PUCCH most recently before the PDCCH for scheduling PUCCH. When determining the valid TPC command window, for example, there may be the following possible implementations.

[0188] In one implementation, the multiple PDCCHs that are repeatedly transmitted may include only the first PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the PUCCH is configured with repetition.

[0189] In the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH may be determined as the valid TPC command window.

[0190] For example, you can refer to Fig.18 To understand, such as Fig.18 As shown, there is currently For scheduling And the current DCI i , DCI i Used to schedule PUSCH i , It is used to schedule PUSCH i DCI i The most recent DCI for scheduling PUCCH, PDCCH is used to carry DCI, then DCI i The corresponding one is the first PDCCH. The corresponding one is the second PDCCH.

[0191] Among them, DCI i Repeated transmission twice, see Fig.18 , currently you can The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0192] Alternatively, in the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH may also be determined as the valid TPC command window.

[0193] For example, you can refer to Fig.19 To understand, such as Fig.19 As shown, the meaning of each parameter and Fig.18 Same, among which, DCI i Repeated transmission twice, see Fig.19 , currently you can The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0194] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include only the second PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the PUCCH most recently before the PDCCH that schedules the PUCCH is configured with repetition.

[0195] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH can be determined as the valid TPC command window.

[0196] For example, you can refer to Fig. 20 To understand, such as Fig. 20 As shown, the meaning of each parameter and Fig.18 The same, among which, Repeated transmission twice, see Fig. 20 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and DCI iThe window between the last OFDM symbol is determined as the valid TPC command window.

[0197] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH may also be determined as the valid TPC command window.

[0198] For example, you can refer to Fig.21 To understand, such as Fig.21 As shown, the meaning of each parameter and Fig.18 The same, among which, Repeated transmission twice, see Fig. 22 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and DCI i The window between the last OFDM symbol is determined as the valid TPC command window.

[0199] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include both a first PDCCH that is repeatedly transmitted and a second PDCCH that is repeatedly transmitted, that is, both are configured with repetition.

[0200] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH can be determined as the valid TPC command window.

[0201] For example, you can refer to Fig. 22 To understand, such as Fig. 22 As shown, the meaning of each parameter and Fig.18 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig. 22 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0202] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH can also be determined as the valid TPC command window.

[0203] For example, you can refer to Fig.23 To understand, such as Fig.23 As shown, the meaning of each parameter and Fig.18 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig.23 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0204] The above combination Figures 18 to 23 Several possible implementations of determining a valid TPC command window when the uplink signal is PUCCH in the accumulation mode are introduced, which can be described as follows:

[0205] The window is between K PUSCH (i-i0)-1symbols before PUCCH transmissionoccasion i-i0and K PUSCH (i)symbols before PUCCH transmission occasion i onactive UL BWP b of carrier fof serving cell c for PUCCH power controladjustment state,where i0>0is the smallest integer for which K PUSCH (i-i0)symbols before PUCCH transmission occasion i-i0 is earlier than K PUSCH(i)symbols before PUCCH transmission occasion i.If the PUCCH transmission is inresponse to a detection by the UE of a DCI format,K PUSCH (i) is a number of symbols for active UL BWP b of carrier f of serving cell c after a lastsymbol of a corresponding PDCCH reception and before a first symbol of thePUCCH transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCH repetitions is applied.

[0206] (On the activated uplink BWP b of carrier f of serving cell c, for PUCCH power control adjustment state l, the effective TPC command window is K before PUCCH transmission i-i0 PUSCH (i-i0)-1 symbol (i.e., the first OFDM symbol after the PDCCH that schedules PUCCH transmission i-i0) and K before PUCCH transmission i PUSCH (i) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i), where i0>0 satisfies the K before PUCCH transmission i-i0. PUSCH (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i-i0) before PUCCH transmission i PUSCH The smallest positive integer before (i) symbol (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i). If the PUCCH transmission is scheduled via DCI format, then K PUSCH (i) The number of symbols between the last symbol received for the corresponding PDCCH and the first symbol transmitted for the PUCCH. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH in the repeatedly transmitted PDCCH is applied.)

[0207] That is to say, if the PDCCH used to determine the effective TPC command window is configured with repeated transmission, the first PDCCH (the first PDCCH sent) or the last PDCCH (the last PDCCH sent) in the repeatedly transmitted PDCCH is used to determine the effective TPC command window. And in this embodiment, when the terminal device determines the TPC effective command window, it needs to determine the second PDCCH, so it is necessary to determine whether a PDCCH is the most recent PDCCH that schedules another PUCCH before the PDCCH that schedules the PUCCH. If neither the PDCCH that schedules the PUCCH nor the most recent PDCCH that schedules another PUCCH is configured with repeated transmission, the judgment can be made directly.

[0208] However, if the PDCCH that schedules the PUCCH or the PDCCH that most recently schedules another PUCCH is configured for repeated transmission, the terminal needs to determine one PDCCH from the multiple PDCCHs that are repeatedly transmitted for the above determination process.

[0209] For example, the terminal device can use the first or last PDCCH sent among the multiple PDCCHs that are repeatedly transmitted for the above judgment. In a possible implementation, if the PDCCH that schedules another PUCCH before the PDCCH that schedules the PUCCH is one of the multiple PDCCHs that are repeatedly transmitted, that is, it is configured for repeated transmission, then, for example, the above judgment can be made based on the last PDCCH among the multiple PDCCHs that are repeatedly transmitted. If the last PDCCH is before the first PDCCH, it can be determined that the PDCCH can be used as the second PDCCH for determining the valid TPC command window; otherwise, the PDCCH cannot be used to determine the valid TPC command window, and the terminal needs to use other PDCCHs that meet the conditions as the second PDCCH. Alternatively, the above judgment can also be made based on the first PDCCH among the multiple PDCCHs that are repeatedly transmitted, then it is only necessary to determine that the first PDCCH is before the first PDCCH, that is, any one of the multiple PDCCHs that are repeatedly transmitted before the first PDCCH can be used as the second PDCCH for determining the valid TPC command window.

[0210] In another possible implementation, if the multiple PDCCHs that are repeatedly transmitted include the first PDCCH that is repeatedly transmitted, that is, the first PDCCH is configured for repeated transmission, then the above judgment can be made, for example, based on the first PDCCH in the first PDCCH that is repeatedly transmitted. Then, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH that is repeatedly transmitted.

[0211] Alternatively, the above judgment can be made based on the last PDCCH in the repeatedly transmitted first PDCCH. In this case, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the repeatedly transmitted first PDCCH. In other words, the second PDCCH only needs to be before any of the repeatedly transmitted first PDCCHs.

[0212] S1702: Determine a closed-loop power adjustment state of the PUCCH according to a TPC command in a valid TPC command window.

[0213] In this embodiment, the valid TPC command window includes a TPC command. In the accumulation mode, the adjustment value indicated by the TPC command in the TPC command window needs to be accumulated to determine the closed-loop power adjustment state of the PUCCH. However, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, the terminal device needs to determine whether the TPC command is in the valid TPC command window, that is, it needs to determine whether the current TPC command can be used to determine the closed-loop power adjustment state.

[0214] In this embodiment, the TPC command carried by multiple PDCCHs for repeated transmission is called the first TPC command. Then, whether the first TPC command is in the valid TPC command window can be determined based on whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs for carrying the repeated transmission of the first TPC command.

[0215] In a possible implementation manner, if the third PDCCH is in the valid TPC command window, it is determined that the first TPC command is in the valid TPC command window.

[0216] Then the current first TPC command can be used to determine the closed-loop power adjustment state. Specifically, the adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC commands other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state can be added to obtain the current closed-loop power adjustment state.

[0217] For example, please refer to the following formula 7 for understanding:

[0218] Among them, g b,f,c (i-i0,l) is the previous closed-loop power adjustment state, g b,f,c (i,l) is the current closed-loop power adjustment state, δ PUSCH,b,f,c(m,l) is the adjustment value indicated by the TPC command in the valid TPC command window, C i is the TPC command in the valid TPC command window.

[0219] In another possible implementation, if the third PDCCH is not in the valid TPC command window, it is determined that the first TPC command is not in the valid TPC command window. Then the current first TPC command is not used to determine the closed-loop power adjustment state. That is to say, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, when the terminal device determines whether the TPC command can be used for closed-loop power adjustment, it makes a judgment based on whether the first PDCCH sent (i.e., the first PDCCH) is in the valid TPC command window, or, it makes a judgment based on whether the last PDCCH sent (i.e., the last PDCCH) is in the window. Alternatively, as long as any one of the PDCCHs is in the valid TPC command window, the TPC command can be used to determine the closed-loop power adjustment state.

[0220] It can be described as follows:- is the current PUCCH power control adjustment state l for active UL BWP b of carrierf of primary cell c and PUCCH transmission occasion i,where

[0221] -Theδ PUSCH,b,f,c values ​​are given in Table 7.1.2-1.

[0222] - is a sum of TPC command values ​​in a set C iof TPCcommand values with cardinality that the UEreceives between K PUSCH (i-i0)-1symbols before PUCCH transmission occasion i-i0 and K PUSCH (i)symbols beforePUCCH transmission occasion i on active UL BWP b of carrier f of primary cellc for PUCCH power control adjustment state,where i0>0is the smallest integerfor which K PUSCH (i-i0)symbols before PUCCH transmission occasion i-i0 isearlier than K PUSCH (i)symbols before PUCCH transmission occasion i.Ifrepetition is configured to the PDCCH carrying TPC command,only the firstPDCCH or the last PDCCH among PDCCH repetitions is applied for calculation of or is applied to determine whether the TPC command isaccumulated.

[0223] -If the PUCCH transmission is in response to a detection by the UE ofa DCI format,K PUSCH(i) is a number of symbols for active UL BWP b of carrier fof primary cell c after a last symbol of a corresponding PDCCH reception andbefore a first symbol of the PUCCH transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCHrepetitions is applied.

[0224] is the current PUCCH power control adjustment state l corresponding to PUSCH transmission i in the activated uplink BWPb of carrier f of primary cell c, where,

[0225] -δ PUSCH,b,f,c The value is obtained according to Table 7.1.2-1.

[0226] - Is a cardinality The TPC command value set C i The sum of the command values ​​indicated by the TPC commands in the PUCCH power control adjustment state l, where the base is the K of the UE before PUCCH transmission i-i0 PUSCH (i-i0)-1 symbol (i.e., the first OFDM symbol after the PDCCH that schedules PUCCH transmission i-i0) and the K symbol before PUCCH transmission i PUSCH (i) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i). Where i0>0 satisfies the K before PUCCH transmission i-i0. PUSCH (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i-i0) before PUCCH transmission i PUSCH The smallest positive integer before (i) symbols (i.e., the last OFDM symbol of the PDCCH that schedules PUCCH transmission i). If the PDCCH carrying the TPC command is configured for repeated transmission, only the first PDCCH in the repeated transmission or the last PDCCH in the repeated transmission is applied. , or is applied to determine whether TPC commands are accumulated.

[0227] - If the PUCCH transmission is a response to the UE's detection of a DCI format, then K PUSCH (i) The number of symbols between the last symbol received for the corresponding PDCCH and the first symbol transmitted for the PUCCH. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH in the repeatedly transmitted PDCCH is applied.)

[0228] S1703: Determine the transmit power of the PUCCH according to the closed-loop power adjustment state.

[0229] After determining the closed-loop power adjustment state of PUCCH, the transmit power of PUCCH can be determined according to the processing method of the accumulation mode introduced in the above embodiment. The specific implementation method can refer to the introduction of the above embodiment and will not be repeated here.

[0230] The power control method provided in the embodiment of the present application, when the PDCCH for scheduling the uplink signal or the PDCCH carrying the uplink signal TPC command is repeatedly transmitted, the terminal device can determine a reference PDCCH from multiple PDCCHs for scheduling the uplink signal to obtain the effective window of TPC, and can also determine a reference PDCCH from multiple PDCCHs carrying the TPC command to determine whether the TPC is within the effective window, so that the accuracy of the closed-loop power control of PUCCH can be effectively guaranteed in the accumulation mode. The above embodiment introduces the implementation method in which the closed-loop power adjustment state is the accumulation mode. In another possible implementation method, the closed-loop power adjustment state can also be the absolute value mode, for example, the network device configures the current closed-loop power control state of the terminal device to the absolute value mode through high-level signaling. When the uplink signal is PUCCH and the closed-loop power adjustment state is the absolute value mode, the implementation method of the uplink power control is similar to the above-mentioned uplink signal is PUSCH and the closed-loop power adjustment state is the absolute value mode. Its specific implementation can refer to the introduction in the above embodiment, and it will not be repeated here.

[0231] The above introduces various possible implementations of uplink signals PUSCH and PUCCH. Next, various possible implementations of uplink signals SRS are introduced. In one possible implementation, the closed-loop power adjustment state can be an accumulation mode. For example, the network device configures the current closed-loop power control state of the terminal device to the accumulation mode through high-level signaling. Figures 24 to 30 The implementation method of uplink power control is introduced when the uplink signal is SRS and the closed-loop power adjustment state is the accumulation mode. Fig.24 The process of the power control method provided in the embodiment of the present application Figure 5 , Fig.25Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 1 , Fig.26 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 2 , Fig. 27 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 3 , Fig.28 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 4 , Fig.29 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 5 , Fig.30 Implementation diagram of determining a valid TPC command window for SRS in the accumulation mode provided in an embodiment of the present application Figure 6 .

[0232] S2401. The terminal device determines a valid TPC command window for SRS in accumulation mode.

[0233] In this embodiment, the SRS may be, for example, a non-periodic SRS. In the current case, the first PDCCH is a PDCCH for scheduling SRS, and the second PDCCH is a PDCCH for scheduling SRS most recently before the PDCCH for scheduling SRS. When determining the valid TPC command window, for example, the following possible implementations may exist.

[0234] In one implementation, the multiple PDCCHs that are repeatedly transmitted may include only the first PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the SRS is configured with repetition.

[0235] In the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH may be determined as the valid TPC command window.

[0236] For example, you can refer to Fig.25 To understand, such as Fig.25 As shown, there is currently For scheduling And the current DCI i , DCI i Used to schedule SRS i , It is used to schedule SRS i DCI iThe most recent DCI for scheduling SRS, PDCCH is used to carry DCI, then DCI i The corresponding one is the first PDCCH. The corresponding one is the second PDCCH.

[0237] Among them, DCI i Repeated transmission twice, see Fig.25 , currently you can The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0238] Alternatively, in the current situation, the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH may also be determined as the valid TPC command window.

[0239] For example, you can refer to Fig.26 To understand, such as Fig.26 As shown, the meaning of each parameter and Fig.25 Same, among which, DCI i Repeated transmission twice, see Fig.26 , currently you can The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0240] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include only the second PDCCH that is repeatedly transmitted, that is, the PDCCH that schedules the SRS most recently before the PDCCH that schedules the SRS is configured with repetition.

[0241] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH can be determined as the valid TPC command window.

[0242] For example, you can refer to Fig. 27 To understand, such as Fig. 27 As shown, the meaning of each parameter and Fig.25 The same, among which, Repeated transmission twice, see Fig. 27 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and DCI i The window between the last OFDM symbol is determined as the valid TPC command window.

[0243] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH may also be determined as the valid TPC command window.

[0244] For example, you can refer to Fig.28 To understand, such as Fig.28 As shown, the meaning of each parameter and Fig.25 The same, among which, Repeated transmission twice, see Fig.28 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and DCI i The window between the last OFDM symbol is determined as the valid TPC command window.

[0245] In another embodiment, the multiple PDCCHs that are repeatedly transmitted may include both a first PDCCH that is repeatedly transmitted and a second PDCCH that is repeatedly transmitted, that is, both are configured with repetition.

[0246] In the current situation, the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH can be determined as the valid TPC command window.

[0247] For example, you can refer to Fig.29 To understand, such as Fig.29 As shown, the meaning of each parameter and Fig.25 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig.29 , currently the repeated transmission The first one in (the one sent first) The first OFDM symbol after that, and the repeated DCI i The first (first sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0248] In the current situation, the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH can also be determined as the valid TPC command window.

[0249] For example, you can refer to Fig.30 To understand, such as Fig.30 As shown, the meaning of each parameter and Fig.25 The same, among which, Repeated transmission three times, DCI i Repeated transmission twice, see Fig.30 , currently the repeated transmission The last one in (last sent) The first OFDM symbol after that, and the repeated DCI i The last (last sent) DCI in i The window between the last OFDM symbol is determined as the valid TPC command window.

[0250] The above combination Figures 25 to 30 Several possible implementations of determining a valid TPC command window when the uplink signal is SRS in the accumulation mode are introduced, which can be described as follows:

[0251] The window is between K SRS (i-i0)-1symbols before SRS transmissionoccasion i-i0 and K SRS (i)symbols before SRS transmission occasion i on activeUL BWP b of carrier f of serving cell c for SRS power control adjustmentstate,where i0>0is the smallest integer for which K SRS (i-i0)symbols before SRStransmission occasion i-i0 is earlier than K SRS (i)symbols before SRStransmission occasion i.if the SRS transmission is aperiodic,K SRS(i) is a number of symbols for active UL BWP b of carrier f of serving cell c after alast symbol of a corresponding PDCCH triggering the SRS transmission and before a first symbol of the SRS transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCHrepetitions is applied.

[0252] (On the activated uplink BWP b of carrier f of serving cell c, for SRS power control adjustment state l, the window is K before SRS transmission i-i0 SRS (i-i0)-1 symbol (i.e., the first OFDM symbol after the PDCCH that triggers SRS transmission i-i0) and K before SRS transmission i SRS (i) symbols (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i), where i0>0 satisfies the K before PUCCH transmission i-i0. SRS (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i-i0) before SRS transmission i K SRS The smallest positive integer before (i) symbol (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i). If SRS transmission is non-periodic, then K SRS (i) is the number of symbols between the last symbol of the PDCCH that triggers SRS transmission and the first symbol of SRS transmission. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH in the repeatedly transmitted PDCCH is applied. )

[0253] That is, if the PDCCH used to determine the effective TPC command window is configured with repeated transmission, the first PDCCH (the first transmitted PDCCH) or the last PDCCH (the last transmitted PDCCH) in the repeatedly transmitted PDCCH is used to determine the effective TPC command window.

[0254] And in this embodiment, when the terminal device determines the TPC valid command window, it needs to determine the second PDCCH, so it needs to determine whether a PDCCH is the PDCCH that schedules another SRS most recently before the PDCCH that schedules the SRS. If the PDCCH that schedules the SRS and the PDCCH that schedules another SRS most recently are not configured with repeated transmission, the judgment can be made directly.

[0255] However, if the PDCCH currently scheduling the SRS or the PDCCH that most recently scheduled another SRS is configured with repeated transmission, the terminal needs to determine one PDCCH from the multiple PDCCHs of repeated transmission for the above determination process.

[0256] For example, the terminal device may use the first transmitted PDCCH or the last transmitted PDCCH among multiple PDCCHs transmitted repeatedly for the above judgment.

[0257] In a possible implementation, if the PDCCH that schedules another SRS most recently before the PDCCH that schedules the SRS is one of the multiple PDCCHs that are repeatedly transmitted, that is, it is configured for repeated transmission, then the above judgment can be made, for example, based on the last PDCCH among the multiple PDCCHs that are repeatedly transmitted. If the last PDCCH is before the first PDCCH, it can be determined that the PDCCH can be used as the second PDCCH for determining the valid TPC command window; otherwise, the PDCCH cannot be used to determine the valid TPC command window, and the terminal needs to use other PDCCHs that meet the conditions as the second PDCCH.

[0258] Alternatively, the above judgment can also be made based on the first PDCCH among the multiple PDCCHs that are repeatedly transmitted. In this case, it is only necessary to determine whether the first PDCCH is before the first PDCCH. That is to say, any one of the multiple PDCCHs that are repeatedly transmitted before the first PDCCH can be used as the second PDCCH to determine the valid TPC command window.

[0259] In another possible implementation, if the multiple PDCCHs that are repeatedly transmitted include the first PDCCH that is repeatedly transmitted, that is, the first PDCCH is configured for repeated transmission, then the above judgment can be made, for example, based on the first PDCCH in the first PDCCH that is repeatedly transmitted. Then, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH that is repeatedly transmitted.

[0260] Alternatively, the above judgment can be made based on the last PDCCH in the repeatedly transmitted first PDCCH. In this case, it is only necessary to determine that the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the repeatedly transmitted first PDCCH. In other words, the second PDCCH only needs to be before any of the repeatedly transmitted first PDCCHs.

[0261] S2402: Determine a closed-loop power adjustment state of the SRS according to a TPC command in a valid TPC command window.

[0262] In this embodiment, the valid TPC command window includes a TPC command. In the accumulation mode, the adjustment value indicated by the TPC command in the TPC command window needs to be accumulated to determine the closed-loop power adjustment state of the SRS. However, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, the terminal device needs to determine whether the TPC command is in the valid TPC command window, that is, it needs to determine whether the current TPC command can be used to determine the closed-loop power adjustment state.

[0263] In this embodiment, the TPC command carried by multiple PDCCHs for repeated transmission is called the first TPC command. Then, whether the first TPC command is in the valid TPC command window can be determined based on whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs for carrying the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs for carrying the repeated transmission of the first TPC command.

[0264] In a possible implementation, if the third PDCCH is in the valid TPC command window, it is determined that the first TPC command is in the valid TPC command window. Then the current first TPC command can be used to determine the closed-loop power adjustment state, specifically, the adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC command other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state can be added to obtain the current closed-loop power adjustment state.

[0265] For example, please refer to the following formula 8 for understanding:

[0266] Among them, h b,f,c (i-i0) is the previous closed-loop power adjustment state, h b,f,c (i) is the current closed-loop power adjustment state, δ SRS,b,f,c(m)is the adjustment value indicated by the TPC command in the valid TPC command window, s i is the TPC command in the valid TPC command window.

[0267] In another possible implementation, if the third PDCCH is not in the valid TPC command window, it is determined that the first TPC command is not in the valid TPC command window. Then the current first TPC command is not used to determine the closed-loop power adjustment state. That is to say, if a TPC command is carried by multiple PDCCHs that are repeatedly transmitted, when the terminal device determines whether the TPC command can be used for closed-loop power adjustment, it makes a judgment based on whether the first PDCCH sent (i.e., the first PDCCH) is in the valid TPC command window, or, it makes a judgment based on whether the last PDCCH sent (i.e., the last PDCCH) is in the window. Alternatively, as long as any one of the PDCCHs is in the valid TPC command window, the TPC command can be used to determine the closed-loop power adjustment state.

[0268] It can be described as follows:- if the UE is not configured for PUSCH transmissions on active UL BWP b of carrier f ofserving cell c,or if srs-PowerControlAdjustmentStates indicates separatepower control adjustment states between SRS transmissions and PUSCHtransmissions,and if tpc-Accumulation is not provided,where

[0269] -Theδ SRS,b,f,c values ​​are given in Table 7.1.1-1-δ SRS,b,f,c(m) is jointlycoded with other TPC commands in a PDCCH with DCI format 2_3, as described inClause 11.4.

[0270] - is a sum of TPC command values ​​in a set s iof TPCcommand values with cardinality that the UEreceives between K SRS (i-i0)-1symbols before SRS transmission occasion i-i0 and K SRS (i)symbols before SRStransmission occasion i on active UL BWP b of carrier f of serving cell c forSRS power control adjustment state,where i0>0is the smallest integer forwhich K SRS (i-i0)symbols before SRS transmission occasion i-i0 is earlier thanK SRS (i)symbols before SRS transmission occasion i.If repetition is configuredto the PDCCH carrying TPC command,only the first PDCCH or the last PDCCHamong PDCCH repetitions is applied for calculation of or isapplied to determine whether the TPC command is accumulated.

[0271] -if the SRS transmission is aperiodic,K SRS(i) is a number of symbols for active UL BWP b of carrier f of serving cell c after a last symbol of corresponding PDCCH triggering the SRS transmission and before a first symbol of the SRS transmission. If repetition is configured to the corresponding PDCCH, the first PDCCH or the last PDCCH among PDCCH repetitions is applied.

[0272] If no PUSCH transmission is configured for the UE on the activated uplink BWP b of carrier f of serving cell c, or if srs-PowerControlAdjustmentStates indicates separate power control adjustment states between SRS transmission and PUSCH transmission, and TPC accumulation mode is configured, where:

[0273] -δ SRS,b,f,c The value is obtained according to Table 7.1.1-1.

[0274] - As described in Section 11.4, in PDCCH with DCI format 2_3, δ SRS,b,f,c(m) Co-encoded with other TPC commands.

[0275] - Is a cardinality The TPC command value set s i The sum of the command values ​​indicated by the TPC command in , where for the SRS power control adjustment state l, the base is the K of UE before SRS transmission i-i0 SRS (i-i0)-1 symbol (i.e. the first OFDM symbol after the PDCCH that triggers SRS transmission i-i0) and K before SRS transmission i SRS The TPC command received between (i) symbols (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i). Where i0>0 satisfies the K before SRS transmission i-i0. SRS (i-i0) symbols (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i-i0) before SRS transmission i K SRSThe smallest positive integer before (i) symbols (i.e., the last OFDM symbol of the PDCCH that triggers SRS transmission i). If the PDCCH carrying the TPC command is configured for repeated transmission, only the first PDCCH in the repeated transmission or the last PDCCH in the repeated transmission is applied , or is applied to determine whether TPC commands are accumulated.

[0276] - If SRS transmission is aperiodic, K SRS (i) is the number of OFDM symbols after the last symbol of the PDCCH that triggers SRS transmission and before the first symbol of SRS transmission. If repeated transmission is configured for the corresponding PDCCH, the first PDCCH or the last PDCCH among the repeatedly transmitted PDCCHs is applied.)

[0277] S2403: Determine the transmission power of the SRS according to the closed-loop power adjustment state.

[0278] After determining the closed-loop power adjustment state of the SRS, the transmission power of the SRS can be determined according to the processing method of the accumulation mode introduced in the above embodiment. The specific implementation method can refer to the introduction of the above embodiment and will not be repeated here.

[0279] The power control method provided in the embodiment of the present application can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals when the PDCCH that schedules uplink signals or the PDCCH that carries the TPC command for uplink signals is repeatedly transmitted, so that the terminal device can determine a reference PDCCH from multiple PDCCHs that schedule uplink signals to obtain the effective window of TPC, and can also determine a reference PDCCH from multiple PDCCHs that carry TPC commands to determine whether the TPC is within the effective window, thereby effectively ensuring the accuracy of the closed-loop power control of SRS in the accumulation mode.

[0280] The above embodiment introduces an implementation method in which the closed-loop power adjustment state is in accumulation mode. In another possible implementation method, the closed-loop power adjustment state can also be in absolute value mode. For example, the network device configures the current closed-loop power control state of the terminal device to absolute value mode through high-level signaling.

[0281] When the uplink signal is SRS and the closed-loop power adjustment state is in absolute value mode, the implementation method of uplink power control is similar to the implementation method described above when the uplink signal is PUSCH and the closed-loop power adjustment state is in absolute value mode. Its specific implementation can refer to the introduction in the above embodiment and will not be repeated here.

[0282] On the basis of the above embodiments, in the power control method provided by the present application, multiple PDCCHs that are repeatedly transmitted occupy different time domain resources respectively, for example, occupy different OFDM symbols in a time slot or occupy different time slots.

[0283] Furthermore, the repeatedly transmitted multiple PDCCHs are transmitted through different search spaces, and different search spaces are associated with different CORESETs, that is, the search spaces and CORESETs occupied by the multiple PDCCHs are different.

[0284] For example, the first PDCCH of repeated transmission is transmitted through search space 1 and CORESET1 associated with search space 1, and the second PDCCH of repeated transmission is transmitted through search space 2 and CORESET2 associated with search space 2.

[0285] To summarize, based on the power control method provided in the present application, when the PDCCH that schedules the uplink signal or the PDCCH that carries the uplink signal TPC command is repeatedly transmitted, the terminal device can determine a PDCCH from multiple PDCCHs that schedule the uplink signal to obtain the effective window of TPC, or determine a PDCCH from multiple PDCCHs that carry the TPC command to determine whether the TPC is within the effective window, thereby ensuring the accuracy of closed-loop power control in the case of repeated transmission of the PDCCH.

[0286] Fig.31 This is a schematic diagram of the structure of the power control device provided in the embodiment of the present application. Fig.31 The communication device 310 may include a determination module 3101, wherein the determination module 3101 is used to determine an effective transmission power control TPC command window according to a preset PDCCH in multiple repeatedly transmitted physical downlink control channels PDCCH, wherein the preset PDCCH includes the first PDCCH or the last PDCCH in the multiple PDCCHs; the determination module 3101 is also used to determine a closed-loop power adjustment state according to a TPC command in the effective TPC command window; the determination module 3101 is also used to determine the transmission power of the uplink signal of the terminal device according to the closed-loop power adjustment state.

[0287] In one possible implementation, the multiple PDCCHs that are repeatedly transmitted include a first PDCCH that is repeatedly transmitted and / or a second PDCCH that is repeatedly transmitted, wherein the first PDCCH is a PDCCH used to schedule the uplink signal, and the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the PDCCH used to schedule the uplink signal.

[0288] In a possible implementation, if the repeatedly transmitted multiple PDCCHs include the repeatedly transmitted second PDCCH, the last PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH, or the first PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH.

[0289] In a possible implementation, if the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission, the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH of repeated transmission, or the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the first PDCCH of repeated transmission.

[0290] In a possible implementation, the closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; the determination module 3101 is specifically used to: determine the window between the first orthogonal frequency division multiplexing OFDM symbol after the second PDCCH and the last OFDM symbol of the first PDCCH in the first PDCCH of the repeated transmission as the valid TPC command window.

[0291] In a possible implementation, the closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; the determination module 3101 is specifically used to: determine the window between the first OFDM symbol after the second PDCCH and the last OFDM symbol of the last PDCCH in the first PDCCH of repeated transmission as the valid TPC command window.

[0292] In a possible implementation, the closed-loop power adjustment state is an accumulation mode, and the repeatedly transmitted multiple PDCCHs include the repeatedly transmitted second PDCCH; the determination module 3101 is specifically used to: determine the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH as the valid TPC command window.

[0293] In a possible implementation, the closed-loop power adjustment state is an accumulation mode, and the repeatedly transmitted multiple PDCCHs include the repeatedly transmitted second PDCCH; the determination module 3101 is specifically used to: determine the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH as the valid TPC command window.

[0294] In a possible implementation manner, the closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs for repeated transmission include the first PDCCH for repeated transmission and the second PDCCH for repeated transmission;

[0295] The determination module 3101 is specifically used to determine the window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH as the valid TPC command window.

[0296] In a possible implementation manner, the closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs for repeated transmission include a first PDCCH for repeated transmission and a second PDCCH for repeated transmission;

[0297] The determination module 3101 is specifically used to determine the window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the last PDCCH in the repeatedly transmitted first PDCCH as the valid TPC command window.

[0298] In one possible implementation, the closed-loop power adjustment state is in absolute value mode, and the uplink signal is scheduled by high-level signaling; the determination module 3101 is also used to: determine the window before a preset number of symbols before the uplink signal as the valid TPC command window, and the preset number is the number of OFDM symbols in a time slot multiplied by a first value, and the first value is configured by the wireless resource control RRC signaling.

[0299] In a possible implementation, the determination module 3101 is also used to: if the first TPC command is carried by multiple PDCCHs of repeated transmission, determine whether the first TPC command is in the valid TPC command window according to whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs used to carry the repeated transmission of the first TPC command.

[0300] In a possible implementation, the determination module 3101 is specifically used to: if the third PDCCH is in the valid TPC command window, determine that the first TPC command is in the valid TPC command window; or, if the third PDCCH is not in the valid TPC command window, determine that the first TPC command is not in the valid TPC command window.

[0301] In a possible implementation, the determination module 3101 is specifically used to add the adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC commands other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state to obtain the current closed-loop power adjustment state.

[0302] In a possible implementation manner, the mode of the closed-loop power adjustment state is an absolute value mode, if the first TPC command is in the valid TPC command window, and the first TPC command is the last TPC command in the valid TPC command window; the determination module 3101 is specifically used to: determine the adjustment value indicated by the last TPC command as the current closed-loop power adjustment state. In a possible implementation manner, the uplink signal includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

[0303] In a possible implementation manner, the repeatedly transmitted multiple PDCCHs occupy different time domain resources.

[0304] The power control device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0305] Fig.32 This is a schematic diagram of the structure of the terminal device provided in the embodiment of the present application. Fig.32 , the terminal device 320 may include: a transceiver 21, a memory 22, and a processor 23. The transceiver 21 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmission port, a transmission interface, or similar descriptions, and the receiver may also be referred to as a receiver, a receiver, a reception port, a reception interface, or similar descriptions. Exemplarily, the transceiver 21, the memory 22, and the processor 23 are interconnected via a bus 24.

[0306] The memory 22 is used to store program instructions;

[0307] The processor 23 is used to execute the program instructions stored in the memory, so as to enable the terminal device 140 to perform any of the above-mentioned power control methods. The receiver of the transceiver 21 can be used to perform the receiving function of the terminal device in the above-mentioned power control method.

[0308] An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned power control method.

[0309] The embodiment of the present application may also provide a computer program product, which can be executed by a processor. When the computer program product is executed, the power control method executed by any of the terminal devices shown above can be implemented.

[0310] The terminal device, computer-readable storage medium and computer program product of the embodiments of the present application can execute the power control method executed by the above-mentioned terminal device. The specific implementation process and beneficial effects thereof are mentioned above and will not be repeated here.

[0311] 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 the units is only a logical function division. There may be other division methods in actual implementation, such as 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0312] 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. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of a software functional unit. A person of ordinary skill in the art may understand that all or part of the steps of implementing the above-mentioned method embodiments may be completed by hardware related to program instructions. The aforementioned computer program may be stored in a computer-readable storage medium. When the computer program is executed by the processor, it implements the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

[0313] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power control method, characterized in that: include: Determine an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH, wherein the preset PDCCH includes a first PDCCH or a last PDCCH in the plurality of PDCCHs; Determining a closed-loop power adjustment state according to the TPC command in the valid TPC command window; The transmission power of the uplink signal of the terminal device is determined according to the closed-loop power adjustment state.

2. The method according to claim 1, characterized in that The repeatedly transmitted multiple PDCCHs include a repeatedly transmitted first PDCCH and / or a repeatedly transmitted second PDCCH, wherein the first PDCCH is a PDCCH for scheduling the uplink signal, and the second PDCCH is a PDCCH for scheduling the same type of uplink signal most recently before the PDCCH for scheduling the uplink signal.

3. The method according to claim 2, characterized in that If the repeatedly transmitted multiple PDCCHs include the repeatedly transmitted second PDCCH, the last PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH, or the first PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH.

4. The method according to claim 2, characterized in that: If the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission, the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH of repeated transmission, or the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the first PDCCH of repeated transmission.

5. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: A window between a first orthogonal frequency division multiplexing OFDM symbol after the second PDCCH and a last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

6. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: A window between a first OFDM symbol after the second PDCCH and a last OFDM symbol of a last PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

7. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the second PDCCH of repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: The window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH is determined as the valid TPC command window.

8. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the second PDCCH of repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: The window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH is determined as the valid TPC command window.

9. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission and the second PDCCH of repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: A window between a first OFDM symbol after a first PDCCH in the repeatedly transmitted second PDCCH and a last OFDM symbol of a first PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

10. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs for repeated transmission include a first PDCCH for repeated transmission and a second PDCCH for repeated transmission; The method of determining an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH comprises: A window between a first OFDM symbol after a last PDCCH in the repeatedly transmitted second PDCCH and a last OFDM symbol of a last PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

11. The method according to any one of claims 1 to 4, characterized in that: The closed-loop power adjustment state is an absolute value mode, and the uplink signal is scheduled by a high-layer signaling; The method further comprises: The window before a preset number of symbols before the uplink signal is determined as the valid TPC command window, where the preset number is the number of OFDM symbols in a time slot multiplied by a first value, and the first value is configured by radio resource control RRC signaling.

12. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: If the first TPC command is carried by multiple PDCCHs of repeated transmission, whether the first TPC command is in the valid TPC command window is determined according to whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs used to carry the repeated transmission of the first TPC command.

13. The method according to claim 12, characterized in that The determining, according to whether the third PDCCH is in the valid TPC command window, whether the first TPC command is in the valid TPC command window comprises: If the third PDCCH is in the valid TPC command window, determining that the first TPC command is in the valid TPC command window; or, If the third PDCCH is not in the valid TPC command window, it is determined that the first TPC command is not in the valid TPC command window.

14. The method according to claim 12, characterized in that The closed-loop power adjustment state is an accumulation mode, and if the first TPC command is in the valid TPC command window, then determining the closed-loop power adjustment state according to the TPC command in the valid TPC command window includes: The adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC commands other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state are added to obtain a current closed-loop power adjustment state.

15. The method according to claim 12, characterized in that The mode of the closed-loop power adjustment state is an absolute value mode, if the first TPC command is in the valid TPC command window, and the first TPC command is the last TPC command in the valid TPC command window; The determining the closed-loop power adjustment state according to the TPC command in the valid TPC command window includes: The adjustment value indicated by the last TPC command is determined as the current closed-loop power adjustment state.

16. The method according to any one of claims 1 to 4, characterized in that: The uplink signal includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

17. The method according to any one of claims 1 to 4, characterized in that: The multiple PDCCHs transmitted repeatedly occupy different time domain resources.

18. A power control device, characterized in that: include: A determination module, configured to determine an effective transmit power control TPC command window according to a preset PDCCH in a plurality of repeatedly transmitted physical downlink control channels PDCCH, wherein the preset PDCCH includes a first PDCCH or a last PDCCH in the plurality of PDCCHs; The determination module is further configured to determine a closed-loop power adjustment state according to a TPC command in the valid TPC command window; The determination module is also used to determine the transmission power of the uplink signal of the terminal device according to the closed-loop power adjustment state.

19. The device according to claim 18, characterized in that The repeatedly transmitted multiple PDCCHs include a repeatedly transmitted first PDCCH and / or a repeatedly transmitted second PDCCH, wherein the first PDCCH is a PDCCH for scheduling the uplink signal, and the second PDCCH is a PDCCH for scheduling the same type of uplink signal most recently before the PDCCH for scheduling the uplink signal.

20. The device according to claim 19, characterized in that If the repeatedly transmitted multiple PDCCHs include the repeatedly transmitted second PDCCH, the last PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH, or the first PDCCH in the repeatedly transmitted second PDCCH is before the first PDCCH.

21. The device according to claim 19, characterized in that If the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission, the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the first PDCCH in the first PDCCH of repeated transmission, or the second PDCCH is the PDCCH that schedules the same type of uplink signal most recently before the last PDCCH in the first PDCCH of repeated transmission.

22. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; The determination module is specifically used for: A window between a first orthogonal frequency division multiplexing OFDM symbol after the second PDCCH and a last OFDM symbol of the first PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

23. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission; The determination module is specifically used for: A window between a first OFDM symbol after the second PDCCH and a last OFDM symbol of a last PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

24. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the second PDCCH of repeated transmission; The determination module is specifically used for: The window between the first OFDM symbol after the first PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH is determined as the valid TPC command window.

25. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the second PDCCH of repeated transmission; The determination module is specifically used for: The window between the first OFDM symbol after the last PDCCH in the repeatedly transmitted second PDCCH and the last OFDM symbol of the first PDCCH is determined as the valid TPC command window.

26. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs of repeated transmission include the first PDCCH of repeated transmission and the second PDCCH of repeated transmission; The determination module is specifically used for: A window between a first OFDM symbol after a first PDCCH in the repeatedly transmitted second PDCCH and a last OFDM symbol of a first PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

27. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an accumulation mode, and the multiple PDCCHs for repeated transmission include a first PDCCH for repeated transmission and a second PDCCH for repeated transmission; The determination module is specifically used for: A window between a first OFDM symbol after a last PDCCH in the repeatedly transmitted second PDCCH and a last OFDM symbol of a last PDCCH in the repeatedly transmitted first PDCCH is determined as the valid TPC command window.

28. The device according to any one of claims 18 to 21, characterized in that The closed-loop power adjustment state is an absolute value mode, and the uplink signal is scheduled by a high-layer signaling; The determining module is also used for: The window before a preset number of symbols before the uplink signal is determined as the valid TPC command window, where the preset number is the number of OFDM symbols in a time slot multiplied by a first value, and the first value is configured by radio resource control RRC signaling.

29. The device according to any one of claims 18 to 21, characterized in that The determining module is also used for: If the first TPC command is carried by multiple PDCCHs of repeated transmission, whether the first TPC command is in the valid TPC command window is determined according to whether the third PDCCH is in the valid TPC command window, wherein the third PDCCH is the first PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is the last PDCCH among the multiple PDCCHs used to carry the repeated transmission of the first TPC command, or the third PDCCH is any one of the multiple PDCCHs used to carry the repeated transmission of the first TPC command.

30. The device according to claim 29, characterized in that The determination module is specifically used for: If the third PDCCH is in the valid TPC command window, determining that the first TPC command is in the valid TPC command window; or, If the third PDCCH is not in the valid TPC command window, it is determined that the first TPC command is not in the valid TPC command window.

31. The device according to claim 29, characterized in that The determination module is specifically used for: The adjustment value indicated by the first TPC command, the adjustment value indicated by the TPC commands other than the first TPC command in the valid TPC command window, and the previous closed-loop power adjustment state are added to obtain a current closed-loop power adjustment state.

32. The device according to claim 29, characterized in that The mode of the closed-loop power adjustment state is an absolute value mode, if the first TPC command is in the valid TPC command window, and the first TPC command is the last TPC command in the valid TPC command window; The determination module is specifically used for: The adjustment value indicated by the last TPC command is determined as the current closed-loop power adjustment state.

33. The device according to any one of claims 18 to 21, characterized in that The uplink signal includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

34. The device according to any one of claims 18 to 21, characterized in that The multiple PDCCHs transmitted repeatedly occupy different time domain resources.

35. A terminal device, characterized in that: include: Transceivers, processors, memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 17.

36. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 17 when the computer-executable instructions are executed by a processor.

37. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 17 is implemented.

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