Method, terminal device and network device for transmitting signal

Abstract

The embodiment of the present application discloses a method, a terminal device and a network device for transmitting a signal, the method comprising: the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal; the terminal device determines the first power control parameter of the target uplink signal according to the SRS resource indication information; the terminal device determines the transmission power of the target uplink signal according to the first power control parameter; the terminal device sends the target uplink signal to the network device according to the transmission power. The method, terminal device and network device of the embodiment of the present application are conducive to improving the accuracy of power control, thereby improving the performance of system transmission.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and more specifically, to a method for transmitting signals, a terminal device, and a network device. Background Art

[0002] For uplink signals, power control of the terminal is of great significance in terms of power saving and suppressing inter-cell interference. Therefore, how to improve the accuracy of uplink power control has been a research issue. Summary of the invention

[0003] In view of this, an embodiment of the present application provides a method, a terminal device and a network device for transmitting signals, which are conducive to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0004] In a first aspect, a method for transmitting a signal is provided, the method comprising: a terminal device determines a sounding reference signal SRS resource indication information corresponding to a target uplink signal; the terminal device determines a first power control parameter of the target uplink signal according to the SRS resource indication information; the terminal device determines a transmit power of the target uplink signal according to the first power control parameter; and the terminal device sends the target uplink signal to a network device according to the transmit power.

[0005] The SRS resource indication information may be indication information for indicating SRS resources. The network device may configure one or more SRS resources in advance or agree on one or more SRS resources through a protocol. The network device may also configure different SRS resources to correspond to a set of independent power control parameters in advance.

[0006] By referring to the power control parameter corresponding to the SRS resource indication information sent by the network device to determine the transmission power of the target uplink signal, it is beneficial to improve the accuracy of uplink power control, thereby improving the performance of system transmission.

[0007] The target uplink signal can be a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUCCH), a physical random access channel (Physical Random Access Channel, PRACH) and SRS. The target uplink signal can also be a phase tracking reference signal (Phase Tracking Reference Signal, PTRS) or a demodulation reference signal (Demodulation Reference Signal, DMRS), etc.

[0008] The sounding reference signal SRS resource indication information corresponding to the target uplink signal may refer to a certain indication mode pre-agreed by the network device and the terminal device or configured by the network device, and belongs to a specific uplink signal.

[0009] Optionally, the first power control parameter may be any one parameter in a calculation formula for transmit power or any combination of multiple parameters.

[0010] Optionally, the SRS sent on different SRS resources may use different beams. That is, there is a corresponding relationship between at least two of the beam, the SRS resource, the SRS resource indication information, and the power control parameter.

[0011] By referring to the power control parameters corresponding to the SRS resources indicated by the network device, a better transmission power can be determined for the target uplink signal when the SRS is sent on the SRS resources indicated by the network device using the same beam, thereby improving the performance of system transmission.

[0012] Optionally, the network device may also explicitly indicate a reference power control parameter corresponding to the target uplink signal, wherein the reference power control parameter is a power control parameter used for sending an SRS on a certain SRS resource.

[0013] In a possible implementation, the method also includes: the terminal device receives first information sent by the network device, and the first information carries the SRS resource indication information; the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information from the first information.

[0014] Optionally, the first information may be high-layer signaling such as Radio Resource Control (RRC) signaling, Media Access Control (MAC) signaling, DCI signaling, system information, and broadcast.

[0015] In one possible implementation, if the target uplink signal is a physical uplink shared channel PUSCH, the first information is downlink control information DCI used to schedule the PUSCH; or if the target uplink signal is a physical random access channel PRACH, the first information is system information or high-layer signaling; or if the target uplink signal is a sounding reference signal SRS, the first information is high-layer signaling or downlink control information DCI.

[0016] Optionally, if the target uplink signal is a periodic SRS, the terminal device can carry SRS resource indication information corresponding to the periodic SRS in the RRC signaling configuring the SRS type; if the target uplink signal is a non-periodic SRS, the terminal device can obtain the SRS resource indication information corresponding to the non-periodic SRS through the DCI that triggers the transmission of the non-periodic SRS.

[0017] In one possible implementation, if the target uplink signal is a physical uplink control channel PUCCH, the first information is a high-layer signaling for indicating the PUCCH resource; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is the downlink control information DCI for scheduling the physical uplink shared channel PUSCH that the terminal device has recently received; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is downlink control information DCI carrying a transmission power control TPC command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is radio resource control RRC signaling or media access control MAC signaling.

[0018] In one possible implementation, if the target uplink signal is a physical uplink control channel PUCCH, the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information corresponding to the format of the PUCCH according to the format of the PUCCH.

[0019] Optionally, the network device may configure in advance different PUCCH formats corresponding to different SRS resource indication information.

[0020] In one possible implementation, if the target uplink signal is a phase tracking reference signal PTRS, the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information corresponding to the first PUSCH as the SRS resource indication information corresponding to the PTRS, wherein the demodulation reference signal DMRS used to demodulate the first PUSCH is associated with the PTRS.

[0021] In a possible implementation, the terminal device determines the first power control parameter of the target uplink signal based on the SRS resource indication information, including: the terminal device determines the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information as the first power control parameter of the target uplink signal.

[0022] Optionally, the terminal device may also add a certain offset to the power control parameter corresponding to the SRS resource indicated by the network device and determine it as the first power control parameter of the target uplink signal.

[0023] In one possible implementation, the first power control parameter includes at least one of the following information: a path loss value for calculating the transmit power, information for measuring a downlink signal for calculating the path loss value for the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0024] Optionally, the power control parameter may be a target power Po, a path loss factor a, or a closed-loop power control factor f(i), etc.

[0025] In one possible implementation, before the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, the method also includes: the terminal device receives configuration information sent by the network device, the configuration information being used to indicate the correspondence between at least one SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0026] Optionally, the network device may configure each SRS resource and the corresponding SRS resource indication information in advance and inform the terminal device of the corresponding relationship, or the corresponding relationship may be agreed upon by a protocol.

[0027] In a possible implementation, before the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, the method further includes: the terminal device uses the power control parameters pre-configured by the network device to determine the transmission power of the target uplink signal.

[0028] In one possible implementation, the terminal device determines a first power control parameter of the target uplink signal based on the SRS resource indication information, including: the terminal device determines the first power control parameter of the target uplink signal based on the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

[0029] In one possible implementation, the terminal device determines a first power control parameter of the target uplink signal based on the SRS resource indication information and the uplink multiple access mode used by the target uplink signal, including: the terminal device determines the first power control parameter of the target uplink signal based on the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

[0030] In a possible implementation, the uplink multiple access mode used by the target uplink signal is discrete Fourier transform-spread-orthogonal frequency division multiplexing DFT-S-OFDM, or cyclic prefix-orthogonal frequency division multiplexing CP-OFDM.

[0031] Optionally, if the uplink multiple access method used by the target uplink signal is discrete Fourier transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), the terminal device determines the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information as the first power control parameter of the target uplink signal; or if the uplink multiple access method used by the target uplink signal is cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM), the terminal device determines the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information plus a preset offset as the first power control parameter of the target uplink signal.

[0032] In one possible implementation, the terminal device determines the transmit power of the target uplink signal based on the first power control parameter, including: the terminal device determines the transmit power of the target uplink signal based on the first power control parameter and a second power control parameter preconfigured by the network device for the target uplink signal.

[0033] In a second aspect, a method for transmitting a signal is provided, the method comprising: a network device sends SRS resource indication information corresponding to a target uplink signal to a terminal device, the SRS resource indication information is used by the terminal device to determine a first power control parameter of the target uplink signal; the network device receives the target uplink signal sent by the terminal device based on the first power control parameter.

[0034] In a possible implementation manner, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a physical random access channel PRACH, a phase tracking reference signal PTRS, or a sounding reference signal SRS.

[0035] In one possible implementation, if the target uplink signal is a physical uplink shared channel PUSCH, the SRS resource indication information is carried in the downlink control information DCI used to schedule the PUSCH; or if the target uplink signal is a physical random access channel PRACH, the SRS resource indication information is carried in system information or high-level signaling; or if the target uplink signal is a sounding reference signal SRS, the SRS resource indication information is carried in high-level signaling or downlink control information DCI.

[0036] In one possible implementation, if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in high-level signaling used to indicate the PUCCH resources; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI for scheduling a physical uplink shared channel PUSCH that the terminal device has recently received; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI carrying a transmission power control TPC command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in radio resource control RRC signaling or media access control MAC signaling.

[0037] In one possible implementation, the first power control parameter includes at least one of the following information: a path loss value for calculating the transmit power, information for measuring a downlink signal for calculating the path loss value for the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0038] In a possible implementation, the method also includes: the network device sends configuration information to the terminal device, the configuration information is used to indicate the correspondence between at least one sounding reference signal SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0039] In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a unit for executing the method in the first aspect or any possible implementation of the first aspect.

[0040] In a fourth aspect, a network device is provided, which is used to execute the method in the second aspect or any possible implementation of the second aspect. Specifically, the network device includes a unit for executing the method in the second aspect or any possible implementation of the second aspect.

[0041] In a fifth aspect, a terminal device is provided, the terminal device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected via a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to execute the method in the first aspect or any possible implementation of the first aspect.

[0042] In a sixth aspect, a network device is provided, the network device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected via a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to execute the method in the second aspect or any possible implementation of the second aspect.

[0043] In the seventh aspect, a computer storage medium is provided for storing computer software instructions used to execute the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect, which includes programs designed for executing the above aspects.

[0044] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method in the first aspect or any optional implementation of the first aspect, or the method in the second aspect or any optional implementation of the second aspect.

[0045] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic diagram showing an application scenario of an embodiment of the present application.

[0047] Figure 2 A schematic block diagram of a method for transmitting a signal according to an embodiment of the present application is shown.

[0048] Figure 3 Another schematic block diagram of a method for transmitting a signal according to an embodiment of the present application is shown.

[0049] Figure 4 A schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0050] Figure 5 A schematic block diagram of a network device according to an embodiment of the present application is shown.

[0051] Figure 6 Another schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0052] Figure 7 Another schematic block diagram of a network device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0054] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), LTE system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, New Radio (NR) or future 5G system, etc.

[0055] In particular, the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technology, such as sparse code multiple access (SCMA) system, low density signature (LDS) system, etc. Of course, the SCMA system and the LDS system may also be called other names in the field of communication; further, the technical solutions of the embodiments of the present application can be applied to multi-carrier transmission systems that adopt non-orthogonal multiple access technology, such as orthogonal frequency division multiplexing (OFDM), filter bank multi-carrier (FBMC), generalized frequency division multiplexing (GFDM), filtered orthogonal frequency division multiplexing (F-OFDM) system, etc.

[0056] The terminal device in the embodiments of the present application may refer to a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may 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 terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited.

[0057] The network device in the embodiment of the present application can be a device for communicating with a terminal device. The network device can be a base station (Base Transceiver Station, BTS) in a GSM or CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (Evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

[0058] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application. Figure 1 The communication system in the embodiment may include a terminal device 10 and a network device 20. The network device 20 is used to provide communication services for the terminal device 10 and access the core network. The terminal device 10 accesses the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 20, thereby communicating with the network. Figure 1 The arrows shown in may represent uplink / downlink transmissions performed via a cellular link between the terminal device 10 and the network device 20 .

[0059] For uplink signals, the power control of the terminal is of great significance in terms of power saving and suppression of inter-cell interference. Therefore, uplink power control is the focus of LTE. The uplink power control within the cell includes controlling the power of PUSCH, PUCCH, PRACH and SRS.

[0060] In 5G, uplink beam management can be performed based on SRS, that is, the terminal device will use different beams to send SRS signals on multiple SRS resources. At the same time, 5G introduces a beam-based power control method. In order to select a reasonable transmission power, signals sent using different beams can have independent power control parameters, thereby obtaining different transmission powers. At this time, since the multiple SRS resources of the terminal device use different beams, independent power control parameters can be configured to obtain the transmission power. For other uplink signals sent by the terminal device, such as PUSCH / PUCCH, the same beam as the beam used by the SRS signal on a certain SRS resource can be used. How to determine the transmission power of these uplink signals based on the beam used is a problem that needs to be solved.

[0061] Figure 2 FIG. 1 is a schematic block diagram of a method 100 for transmitting a signal according to an embodiment of the present application. Figure 2As shown, the method 100 includes:

[0062] S110, the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal;

[0063] S120, the terminal device determines a first power control parameter of the target uplink signal according to the SRS resource indication information;

[0064] S130, the terminal device determines the transmit power of the target uplink signal according to the first power control parameter;

[0065] S140, the terminal device sends the target uplink signal to the network device according to the transmission power.

[0066] Specifically, the network device may configure one or more SRS resources in advance or agree on one or more SRS resources through a protocol. The SRS sent on different SRS resources may use different beams, and the network device may also configure the one or more SRS resources in advance or agree on the correspondence between the power control parameters through a protocol. That is, each SRS resource may correspond to a set of independent power control parameters. The network device may then indicate to the terminal device which SRS resource corresponding to the beam to use to transmit the target uplink signal. The terminal device may then obtain the power control parameters corresponding to the SRS resources indicated by the network device through the correspondence between the SRS resources and the power control parameters. The terminal device may make certain adjustments based on the power control parameters indicated by the network device to determine the power control parameters of the target uplink signal, or may directly determine the power control parameters indicated by the network device as the power control parameters of the target uplink signal.

[0067] Therefore, the method for transmitting signals in the embodiment of the present application determines the transmission power of the target uplink signal by referring to the power control parameters corresponding to the SRS resource indication information sent by the network device, which is beneficial to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0068] It should be understood that the target uplink signal may be the PUSCH, PUCCH, PRACH and SRS mentioned above. The target uplink signal may also be PTRS, or DMRS, etc. The embodiment of the present application does not limit the type of the target uplink signal. As long as it is an uplink signal, the transmit power can be calculated using the technical solution of the embodiment of the present application.

[0069] In an embodiment of the present application, the "corresponding" in the sounding reference signal SRS resource indication information corresponding to the target uplink signal may mean that the network device and the terminal device have agreed in advance or that a certain indication method is configured by the network device and belongs to a specific uplink signal. For example, it may be agreed that a specific field in the downlink control information (Downlink Control Information, DCI) used to schedule PUSCH is the SRS resource indication information corresponding to the PUSCH.

[0070] In addition, those skilled in the art understand that the SRS resource indication information may be indication information for indicating SRS resources. For example, the network device and the terminal device pre-agreed on 4 types of SRS resources, and the 4 types of SRS resources each have an independent power control parameter, then the network device and the terminal device may also pre-agreed on using 2 bits to indicate the 4 SRS resources, specifically, the indication information corresponding to SRS resource 1 is 00, the indication information corresponding to SRS resource 2 is 01, the indication information corresponding to SRS resource 3 is 10, and the indication information corresponding to SRS resource 4 is 11.

[0071] Optionally, in an embodiment of the present application, the terminal device can also directly obtain the reference power control parameters corresponding to the target uplink signal. For example, if the network device wants the terminal device to use which beam to send PUSCH, then the network device can carry an indication of the reference power control parameters corresponding to the SRS resources using the beam in the DCI used to schedule PUSCH. Similarly, the network device and the terminal device can agree in advance that a specific field in the DCI used to schedule PUSCH is used to indicate the reference power control parameters of the PUSCH, and then the terminal device can directly obtain the reference power control parameters of the PUSCH without having to indirectly obtain the reference power control parameters through the correspondence between the SRS resources and the reference power control parameters. It should be understood that the "reference power control parameters" here refer to the power control parameters used to send SRS on a certain SRS resource.

[0072] It should also be understood that the first power control parameter in the embodiment of the present application can be any one or any combination of multiple parameters in the calculation formula of the transmit power. For example, the calculation formula of the transmit power generally includes: the maximum allowed transmit power of the terminal device, the power offset, the transmission bandwidth of the uplink signal on the subframe, the target received power, the path loss compensation factor, the closed-loop power adjustment amount and the path loss, etc.

[0073] Optionally, the SRS sent on different SRS resources may use different beams. That is, there is a corresponding relationship between at least two of the beam, the SRS resource, the SRS resource indication information, and the power control parameter.

[0074] By referring to the power control parameters corresponding to the SRS resources indicated by the network device, a better transmission power can be determined for the target uplink signal when the SRS is sent on the SRS resources indicated by the network device using the same beam, thereby improving the performance of system transmission.

[0075] The following will describe in detail how to obtain the SRS resource indication information corresponding to the above-mentioned multiple target uplink signals.

[0076] Optionally, the network device may send the SRS resource indication information to the terminal device. Specifically, the terminal device receives first information sent by the network device, the first information carrying the SRS resource indication information; the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information from the first information.

[0077] It should be understood that the first information may be high-layer signaling such as RRC signaling, MAC signaling, DCI signaling, system information, etc.

[0078] Embodiment 1: If the target uplink signal is a physical uplink shared channel PUSCH, the first information is downlink control information DCI for scheduling the PUSCH. Those skilled in the art know that DCI can have multiple formats for transmitting different controls, and the network device can agree with the terminal device that a certain indication field of the DCI for scheduling the PUSCH is used to transmit the SRS resource indication information.

[0079] Optionally, if the target uplink signal is a physical uplink shared channel PUSCH, the first information may also be RRC signaling or MAC signaling, or system information, etc.

[0080] Embodiment 2: If the target uplink signal is a physical random access channel PRACH, the first information may be system information or high-level signaling. PRACH is used to send random access messages to establish an RRC connection. Before random access is initialized, the terminal device may receive information through system information such as broadcast information; after random access is initialized, the terminal device may receive information through high-level signaling; therefore, the terminal device may receive SRS resource indication information corresponding to PRACH through system information or high-level signaling. The system information may be other system information (Other System Information, OSI) or remaining system information (Remaining System Information, RMSI).

[0081] Embodiment 3: If the target uplink signal is a sounding reference signal SRS, the first information may be high-level signaling or downlink control information DCI. Similarly, the network device and the terminal device may agree in advance on a specific field in the high-level signaling or DCI to indicate the SRS resource indication information corresponding to the SRS. For example, if the target uplink signal is a non-periodic SRS, the terminal device may obtain the SRS resource indication information corresponding to the non-periodic SRS from the DCI that triggers the transmission of the non-periodic SRS. For another example, if the target uplink signal is a periodic SRS, the network device may carry the SRS resource indication information corresponding to the periodic SRS in the RRC signaling that configures the SRS type. For another example, when the terminal device detects that the DCI format is a first format, it may be considered that the SRS resource indication information carried in the DCI format is the SRS resource indication information corresponding to the SRS triggered under the DCI format; when the terminal device detects that the DCI format is a second format, it may be considered that the SRS resource indication information carried in the DCI format is the SRS resource indication information corresponding to the SRS triggered under the DCI format, and so on.

[0082] Embodiment 4: If the target uplink signal is a phase tracking reference signal PTRS, the terminal device determines the detection reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information corresponding to the first PUSCH as the SRS resource indication information corresponding to the PTRS, wherein the demodulation reference signal DMRS used to demodulate the first PUSCH has an associated relationship with the PTRS. It should be understood that this association relationship can be a corresponding relationship configured on the network side, such as each PTRS port corresponds to a DMRS port; this association relationship can also be an association relationship on spatial parameters, that is, the DMRS and the PTRS are quasi-co-location in terms of spatial parameters.

[0083] That is to say, the network device and the terminal device can agree that the SRS resource indication information corresponding to certain types of uplink signals can be the same. For example, once the terminal device obtains the SRS resource indication information corresponding to the PUSCH, the terminal device can consider that the SRS resource indication information can also be that of the PTRS, that is, after obtaining the SRS resource indication information corresponding to the PUSCH, the terminal device can determine the first power control parameter of the PTRS according to the SRS resource indication information of the PUSCH, and then determine the transmission power of the PTRS. Similarly, after obtaining the SRS resource indication information corresponding to the PUCCH, the terminal device can determine the SRS resource indication information as the resource indication information of the PUSCH, etc.

[0084] Embodiment 5: If the target uplink signal is a physical uplink control channel PUCCH, the first information is a high-layer signaling for indicating the PUCCH resource; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is the downlink control information DCI for scheduling the physical uplink shared channel PUSCH most recently received by the terminal device; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is the downlink control information DCI carrying a transmit power control (Transmit Power Control, TPC) command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is RRC signaling or media access control MAC signaling.

[0085] Specifically, for a terminal device, the resource blocks reserved for PUCCH in a subframe are usually semi-statically configured. That is, the network device carries the SRS resource indication information in the RRC signaling for configuring PUCCH resources to the terminal device. It should be understood that the network device may not be limited to indicating together with the PUCCH resources, but may also indicate through other RRC signaling or MAC signaling.

[0086] The network device may also indicate the TPC command and the SRS resource indication information to the terminal device together, that is, the SRS resource indication information is carried in the DCI carrying the TPC command, for example, DCI format 0 or DCI format 1A. The network device may not be limited to indicating together with the TPC command, and may also indicate through other DCI. For example, the network device may also obtain the SRS resource indication information of the PUCCH from the DCI for scheduling the PUSCH recently received by the terminal device, and the embodiments of the present application do not constitute a limitation on this.

[0087] Embodiment 6: If the target uplink signal is a physical uplink control channel PUCCH, the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, including: the terminal device determines the SRS resource indication information corresponding to the format of the PUCCH according to the format of the PUCCH.

[0088] Specifically, the network device may configure in advance that different PUCCH formats correspond to different SRS resource indication information. For example, the network device may configure that PUCCH format1 corresponds to 000, PUCCH format1a corresponds to 001, etc. 000 is used to indicate SRS resource 0, 001 is used to indicate SRS resource 1, etc. The network device may inform the terminal device of this configuration mode, so when the terminal device needs to use a certain format of PUCCH, it can know what the corresponding SRS resource indication information is, and then it can know the corresponding reference power control parameter, so as to calculate the transmission power used when sending the PUCCH.

[0089] It should be understood that the above correspondence between the PUCCH format and the SRS resource indication information can also be applied to other uplink signals, for example, the PRACH format can be corresponded to the SRS resource indication information. It should also be understood that the above-mentioned network device configures different SRS resource indication information for different PUCCH formats. Similarly, the network device can directly configure different SRS resources or different power control parameters for different PUCCH formats. The embodiments of the present application are not limited to this.

[0090] Optionally, in an embodiment of the present application, the terminal device determines the first power control parameter of the target uplink signal based on the SRS resource indication information, including: the terminal device determines the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information as the first power control parameter of the target uplink signal.

[0091] Specifically, the terminal device can directly determine the power control parameter corresponding to the SRS resource indicated by the network device as the first power control parameter of the target uplink signal. For example, the target uplink signal can use the same path loss value as the SRS sent on the SRS resource indicated by the SRS resource indication information. Alternatively, the terminal device can also determine the power control parameter corresponding to the SRS resource indicated by the network device plus a certain offset as the first power control parameter of the target uplink signal.

[0092] Optionally, in an embodiment of the present application, the first power control parameter includes at least one of the following information: a path loss value used to calculate the transmit power, information used to measure a downlink signal used to calculate the path loss value of the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0093] Among them, the information of the downlink signal used to measure the path loss value used to calculate the transmission power can be considered as path loss reference association information. That is to say, it can be a subset of the downlink signal used to estimate the path loss of the target uplink signal. For example, the path loss reference association information for PUSCH can refer to which downlink pilot signals in the configuration set of downlink pilot signals are used to measure the path loss and thus estimate the path loss of PUSCH. For example, the target uplink signal can use the same downlink signal as the SRS sent on the SRS resource indicated by the SRS resource indication information to measure the path loss value, such as using the same channel state information reference signal (Channel State Information-ReferenceSignals, CSI-RS) to measure the path loss value. The downlink signal can also be a synchronization signal or a physical broadcast channel (Physical Broadcast Channel, PBCH), etc.

[0094] Specifically, the power control parameter may be a target power Po, a path loss factor a, or a closed-loop power control factor f(i), etc.

[0095] Optionally, in an embodiment of the present application, before the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, the method also includes: the terminal device receives configuration information sent by the network device, the configuration information being used to indicate the correspondence between at least one SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0096] Specifically, the network side may configure N SRS resources and power control parameters used by each SRS resource to send SRS for the terminal, and the N SRS resources include the SRS resources indicated by the network to the terminal. Here, N may be an integer greater than or equal to 1. Similarly, the network device may configure each SRS resource and the corresponding SRS resource indication information in advance and inform the terminal device of the corresponding relationship, or the corresponding relationship may be agreed upon by a protocol.

[0097] Optionally, in an embodiment of the present application, before the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, the method further includes: the terminal device adopts the power control parameters pre-configured by the network device to determine the transmission power of the target uplink signal.

[0098] In other words, if the terminal does not receive the SRS resource indication information sent by the network side, the power control parameter pre-configured by the network side for the target uplink signal is used until the SRS resource indication information is received. Specifically, after receiving the SRS resource indication information, the power control parameter used for sending the SRS on the SRS resource indicated by the SRS resource indication information is used to replace the value pre-configured by the network side.

[0099] Optionally, in an embodiment of the present application, the terminal device determines the first power control parameter of the target uplink signal based on the SRS resource indication information, including: the terminal device determines the first power control parameter of the target uplink signal based on the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

[0100] Specifically, the terminal device can determine the first power control parameter of the target uplink signal according to the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information and the uplink multiple access mode used by the target uplink signal. Optionally, the uplink multiple access mode used by the target uplink signal is DFT-S-OFDM, or cyclic prefix orthogonal frequency division multiplexing CP-OFDM. For example, if the uplink multiple access mode used by the target uplink signal is DFT-S-OFDM, the power control parameter indicated by the SRS resource indication information is directly used as the first power control parameter of the target uplink signal; if the uplink multiple access mode used by the target uplink signal is CP-OFDM, a certain offset value is added to the power control parameter indicated by the SRS resource indication information as the first power control parameter of the target uplink signal.

[0101] Optionally, in an embodiment of the present application, the terminal device determines the transmit power of the target uplink signal based on the first power control parameter, including: the terminal device determines the transmit power of the target uplink signal based on the first power control parameter and a second power control parameter preconfigured by the network device for the target uplink signal.

[0102] For example, the first power control parameter may include a path loss value used to determine the transmission power, and the second power control parameter may include an open-loop power control parameter and a closed-loop power control parameter. For another example, the first power control parameter may include an open-loop power control parameter, and the second power control parameter may include a closed-loop power control parameter. For another example, the first power control parameter may include a path loss value and a target power Po, and the second power control parameter may include other power control parameters (e.g., a path loss factor a and a closed-loop power control factor f(i)).

[0103] Take the calculation formula of PUSCH uplink transmit power control as an example:

[0104] If the terminal device sends PUSCH in subframe i of serving cell c instead of PUCCH, the power P of the user equipment to send PUSCH in subframe i of serving cell c is PUSCH,c (i) is:

[0105]

[0106] If the terminal device sends PUSCH and PUCCH in subframe i of serving cell c at the same time, the power P of the user equipment to send PUSCH in subframe i of serving cell c is PUSCH,c (i) is:

[0107]

[0108] Among them, M PUSCH,c (i) is the number of RBs occupied by PUSCH;

[0109] P CMAX,c (i) the maximum transmit power of subframe i in serving cell c configured for the terminal device, P CMAX,c (i) Linear value;

[0110] is the linear value of the PUCCH transmit power sent in subframe i;

[0111] P O_PUSCH,c (j) and α c (j) is a value determined by the terminal device through high-layer signaling;

[0112] PL c The path loss value from the serving cell c to the terminal device measured by the terminal device;

[0113] Δ TF,c (i) is a value determined by the terminal device according to the ratio of the number of uplink data bits sent by the PUSCH to the number of resource units included in the PUSCH;

[0114] f c (i) is the value determined by the terminal device based on the power adjustment command for the PUSCH.

[0115] From the above formula, it can be seen that if the first power control parameter is the path loss value PL c , and the network device does not configure the second power control parameter for it, then the terminal device only needs to adjust the uplink transmit power of the PUSCH according to the path loss value corresponding to the SRS resource indication information sent by the network and other default parameters. c , the network device configures the second power control parameter fc (i), the terminal device can then use the path loss value corresponding to the SRS resource indication information sent by the network and the f configured by the network device. c (i) and other default parameters adjust the uplink transmit power of the PUSCH.

[0116] Figure 3 FIG. 2 is a schematic block diagram of a method 200 for transmitting a signal according to an embodiment of the present application. Figure 3 As shown, the method 200 includes:

[0117] S210, the network device sends SRS resource indication information corresponding to the target uplink signal to the terminal device, where the SRS resource indication information is used by the terminal device to determine a first power control parameter of the target uplink signal;

[0118] S220, the network device receives the target uplink signal sent by the terminal device based on the first power control parameter.

[0119] Therefore, the method for transmitting signals in the embodiment of the present application determines the transmission power of the target uplink signal by referring to the power control parameters corresponding to the SRS resource indication information sent by the network device, which is beneficial to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0120] Optionally, in an embodiment of the present application, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a physical random access channel PRACH, a phase tracking reference signal PTRS or a sounding reference signal SRS.

[0121] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink shared channel PUSCH, the SRS resource indication information is carried in the downlink control information DCI used to schedule the PUSCH; or if the target uplink signal is a physical random access channel PRACH, the SRS resource indication information is carried in system information or high-level signaling; or if the target uplink signal is a sounding reference signal SRS, the SRS resource indication information is carried in high-level signaling or downlink control information DCI.

[0122] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in high-layer signaling used to indicate the PUCCH resources; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI for scheduling a physical uplink shared channel PUSCH that the terminal device has recently received; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI carrying a transmission power control TPC command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in radio resource control RRC signaling or media access control MAC signaling.

[0123] Optionally, in an embodiment of the present application, the first power control parameter includes at least one of the following information: a path loss value used to calculate the transmit power, information used to measure a downlink signal used to calculate the path loss value of the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0124] Optionally, in an embodiment of the present application, the method also includes: the network device sends configuration information to the terminal device, the configuration information is used to indicate the correspondence between at least one sounding reference signal SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0125] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0126] It should be understood that the interaction between the network device and the terminal device and the related characteristics and functions described by the network device correspond to the related characteristics and functions of the terminal device. And the relevant content has been described in detail in the above method 100, so for the sake of brevity, it will not be repeated here.

[0127] It should also be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0128] The above describes in detail the method for transmitting a signal according to an embodiment of the present application. Figures 4 to 7 , describing a device for transmitting a signal according to an embodiment of the present application, the technical features described in the method embodiment are applicable to the following device embodiments.

[0129] Figure 4 FIG. 3 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 4 As shown, the terminal device 300 includes:

[0130] A first determining unit 310 is configured to determine sounding reference signal SRS resource indication information corresponding to a target uplink signal;

[0131] A second determining unit 320, configured to determine a first power control parameter of the target uplink signal according to the SRS resource indication information;

[0132] A third determining unit 330 is configured to determine the transmit power of the target uplink signal according to the first power control parameter;

[0133] The sending unit 340 is used to send the target uplink signal to the network device according to the sending power.

[0134] Therefore, the terminal device of the embodiment of the present application is conducive to improving the accuracy of power control, thereby improving the performance of system transmission.

[0135] Optionally, in an embodiment of the present application, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a physical random access channel PRACH, a phase tracking reference signal PTRS or a sounding reference signal SRS.

[0136] Optionally, in an embodiment of the present application, the terminal device 300 also includes: a first receiving unit, used to receive first information sent by the network device, the first information carrying the SRS resource indication information; the first determination unit 310 is specifically used to: determine the SRS resource indication information from the first information.

[0137] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink shared channel PUSCH, the first information is downlink control information DCI used to schedule the PUSCH; or if the target uplink signal is a physical random access channel PRACH, the first information is system information or high-layer signaling; or if the target uplink signal is a sounding reference signal SRS, the first information is high-layer signaling or downlink control information DCI.

[0138] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink control channel PUCCH, the first information is a high-layer signaling for indicating the PUCCH resource; or

[0139] If the target uplink signal is a physical uplink control channel PUCCH, the first information is the downlink control information DCI most recently received by the terminal device for scheduling a physical uplink shared channel PUSCH; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is downlink control information DCI carrying a transmission power control TPC command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the first information is radio resource control RRC signaling or media access control MAC signaling.

[0140] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink control channel PUCCH, the first determination unit 310 is specifically used to: determine, according to the format of the PUCCH, SRS resource indication information corresponding to the format of the PUCCH.

[0141] Optionally, in an embodiment of the present application, if the target uplink signal is a phase tracking reference signal PTRS, the first determination unit 310 is specifically used to: determine the SRS resource indication information corresponding to the first PUSCH as the SRS resource indication information corresponding to the PTRS, wherein the demodulation reference signal DMRS used to demodulate the first PUSCH has an associated relationship with the PTRS.

[0142] Optionally, in an embodiment of the present application, the second determining unit 320 is specifically used to: determine the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information as the first power control parameter of the target uplink signal.

[0143] Optionally, in an embodiment of the present application, the first power control parameter includes at least one of the following information: a path loss value used to calculate the transmit power, information used to measure a downlink signal used to calculate the path loss value of the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0144] Optionally, in an embodiment of the present application, the terminal device 300 also includes: a second receiving unit, used to receive configuration information sent by the network device, the configuration information is used to indicate the correspondence between at least one SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0145] Optionally, in an embodiment of the present application, the terminal device 300 further includes: a fourth determination unit, configured to determine the transmission power of the target uplink signal by adopting a power control parameter pre-configured by the network device.

[0146] Optionally, in the embodiment of the present application, the second determining unit 320 is specifically used to determine a first power control parameter of the target uplink signal according to the SRS resource indication information and an uplink multiple access mode used by the target uplink signal.

[0147] Optionally, in an embodiment of the present application, the second determination unit 320 is specifically used to determine a first power control parameter of the target uplink signal according to the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

[0148] Optionally, in an embodiment of the present application, the uplink multiple access mode used by the target uplink signal is discrete Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, or cyclic prefix orthogonal frequency division multiplexing CP-OFDM.

[0149] Optionally, in an embodiment of the present application, the third determination unit 330 is specifically used to determine the transmission power of the target uplink signal according to the first power control parameter and a second power control parameter preconfigured by the network device for the target uplink signal.

[0150] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 2 For the sake of brevity, the corresponding processes of the terminal device in the method are not repeated here.

[0151] Figure 5 FIG. 4 is a schematic block diagram of a network device 400 according to an embodiment of the present application. Figure 5 As shown, the network device 400 includes:

[0152] A first sending unit 410 is used to send SRS resource indication information corresponding to a target uplink signal to the terminal device, where the SRS resource indication information is used by the terminal device to determine a first power control parameter of the target uplink signal;

[0153] The receiving unit 420 is used to receive the target uplink signal sent by the terminal device based on the first power control parameter.

[0154] Therefore, the network device of the embodiment of the present application is conducive to improving the accuracy of power control, thereby improving the performance of system transmission.

[0155] Optionally, in an embodiment of the present application, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a physical random access channel PRACH, a phase tracking reference signal PTRS or a sounding reference signal SRS.

[0156] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink shared channel PUSCH, the SRS resource indication information is carried in the downlink control information DCI used to schedule the PUSCH; or if the target uplink signal is a physical random access channel PRACH, the SRS resource indication information is carried in system information or high-level signaling; or if the target uplink signal is a sounding reference signal SRS, the SRS resource indication information is carried in high-level signaling or downlink control information DCI.

[0157] Optionally, in an embodiment of the present application, if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in high-layer signaling used to indicate the PUCCH resources; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI for scheduling a physical uplink shared channel PUSCH that the terminal device has recently received; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in downlink control information DCI carrying a transmission power control TPC command, and the TPC command is used to indicate a closed-loop power adjustment value of the PUCCH; or if the target uplink signal is a physical uplink control channel PUCCH, the SRS resource indication information is carried in radio resource control RRC signaling or media access control MAC signaling.

[0158] Optionally, in an embodiment of the present application, the first power control parameter includes at least one of the following information: a path loss value used to calculate the transmit power, information used to measure a downlink signal used to calculate the path loss value of the transmit power, an open-loop power control parameter, and a closed-loop power control parameter.

[0159] Optionally, in an embodiment of the present application, the network device 400 also includes: a second sending unit, used to send configuration information to the terminal device, the configuration information being used to indicate the correspondence between at least one sounding reference signal SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

[0160] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 400 are respectively to implement Figure 3 For the sake of brevity, the corresponding processes of the network devices in the method are not repeated here.

[0161] like Figure 6 As shown, the embodiment of the present application also provides a terminal device 500, which can be Figure 4The terminal device 300 in Figure 2 The terminal device 500 includes: an input interface 510, an output interface 520, a processor 530 and a memory 540, and the input interface 510, the output interface 520, the processor 530 and the memory 540 can be connected through a bus system. The memory 540 is used to store programs, instructions or codes. The processor 530 is used to execute the programs, instructions or codes in the memory 540 to control the input interface 510 to receive signals, control the output interface 520 to send signals, and complete the operations in the aforementioned method embodiment.

[0162] Therefore, the terminal device of the embodiment of the present application determines the transmission power of the target uplink signal by referring to the power control parameters corresponding to the SRS resource indication information sent by the network device, which is beneficial to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0163] It should be understood that in the embodiment of the present application, the processor 530 may be a central processing unit (CPU), and the processor 530 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0164] The memory 540 may include a read-only memory and a random access memory, and provide instructions and data to the processor 530. A portion of the memory 540 may also include a nonvolatile random access memory. For example, the memory 540 may also store information on the device type.

[0165] In the implementation process, the contents of the above method can be completed by the hardware integrated logic circuit in the processor 530 or the instructions in the form of software. The contents of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 540, and the processor 530 reads the information in the memory 540 and completes the contents of the above method in combination with its hardware. To avoid repetition, it is not described in detail here.

[0166] In a specific implementation manner, the first determining unit, the second determining unit, the third determining unit, and the fourth determining unit in the terminal device 300 may be composed of Figure 6 The processor 530 in the terminal device 300 can be implemented by Figure 6 The output interface 520 in the terminal device 300 can be implemented by the first receiving unit and the second receiving unit. Figure 6 The input interface 510 in is implemented.

[0167] like Figure 7 As shown, the embodiment of the present application also provides a network device 600, which can be Figure 5 The network device 400 in Figure 3 The network device 600 includes: an input interface 610, an output interface 620, a processor 630 and a memory 640, and the input interface 610, the output interface 620, the processor 630 and the memory 640 can be connected through a bus system. The memory 640 is used to store programs, instructions or codes. The processor 630 is used to execute the programs, instructions or codes in the memory 640 to control the input interface 610 to receive signals, control the output interface 620 to send signals, and complete the operations in the aforementioned method embodiment.

[0168] Therefore, the network device of the embodiment of the present application is conducive to improving the accuracy of power control, thereby improving the performance of system transmission.

[0169] It should be understood that in the embodiment of the present application, the processor 630 may be a central processing unit (CPU), and the processor 630 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0170] The memory 640 may include a read-only memory and a random access memory, and provides instructions and data to the processor 630. A portion of the memory 640 may also include a nonvolatile random access memory. For example, the memory 640 may also store information on the device type.

[0171] In the implementation process, the contents of the above method can be completed by the hardware integrated logic circuit in the processor 630 or the instructions in the form of software. The contents of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

[0172] In a specific implementation manner, the first sending unit and the second sending unit in the network device 400 may be composed of Figure 7 The output interface 620 in the network device 400 can be implemented by Figure 7 The input interface 610 in is implemented.

[0173] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0174] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0175] 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 unit 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0176] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0177] 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.

[0178] If this function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0179] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for transmitting a signal, characterized in that include: The terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal; The SRS resource indication information is used to indicate at least one SRS resource from a plurality of SRS resources and the target uplink signal is a physical uplink shared channel PUSCH; The terminal device determines a first power control parameter of the target uplink signal according to the SRS resource indication information; Wherein the SRS resource indication information corresponds to the first power control parameter; The terminal device determines the transmit power of the target uplink signal according to the first power control parameter; The terminal device sends the target uplink signal to the network device according to the transmission power; wherein, The SRS resource indication information is carried in the downlink control information DCI for scheduling the PUSCH; wherein a specific field in the downlink control information DCI for scheduling the PUSCH is the SRS resource indication information corresponding to the PUSCH; The terminal device determines the transmit power of the target uplink signal according to the first power control parameter, including: The terminal device determines the transmit power of the target uplink signal based on the first power control parameter and the second power control parameter preconfigured by the network device for the target uplink signal; wherein the first power control parameter includes information and / or an open-loop power control parameter for measuring the downlink signal for calculating the path loss value of the transmit power; and the second power control parameter includes a closed-loop power control parameter or an open-loop power control parameter other than the first power control parameter.

2. The method according to claim 1, characterized in that Before the terminal device determines the sounding reference signal SRS resource indication information corresponding to the target uplink signal, the method further includes: The terminal device receives configuration information sent by the network device, where the configuration information is used to indicate a correspondence between at least one SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

3. The method according to claim 1, characterized in that The method further comprises: If the terminal does not receive the SRS resource indication information sent by the network device, the terminal device uses the power control parameters pre-configured by the network device to determine the transmission power of the target uplink signal.

4. The method according to claim 1, characterized in that: The terminal device determines, according to the SRS resource indication information, a first power control parameter of the target uplink signal, including: The terminal device determines a first power control parameter of the target uplink signal according to the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

5. The method according to claim 4, characterized in that The terminal device determines, according to the SRS resource indication information and the uplink multiple access mode used by the target uplink signal, a first power control parameter of the target uplink signal, including: The terminal device determines a first power control parameter of the target uplink signal according to the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

6. The method according to claim 4 or 5, characterized in that: The uplink multiple access mode used by the target uplink signal is discrete Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM or cyclic prefix orthogonal frequency division multiplexing CP-OFDM.

7. A terminal device, characterized in that: The terminal device comprises: A first determining unit is configured to determine sounding reference signal SRS resource indication information corresponding to a target uplink signal, wherein the SRS resource indication information is used to indicate at least one SRS resource from a plurality of SRS resources and the target uplink signal is a physical uplink shared channel PUSCH; A second determining unit is used to determine a first power control parameter of the target uplink signal according to the SRS resource indication information; wherein the SRS resource indication information and the first power control parameter have a corresponding relationship; A third determining unit, configured to determine the transmit power of the target uplink signal according to the first power control parameter; A sending unit, configured to send the target uplink signal to a network device according to the sending power; wherein, The SRS resource indication information is carried in the downlink control information DCI for scheduling the PUSCH; wherein a specific field in the downlink control information DCI for scheduling the PUSCH is the SRS resource indication information corresponding to the PUSCH; Among them, the third determination unit is specifically used to: determine the transmit power of the target uplink signal according to the first power control parameter and the second power control parameter preconfigured by the network device for the target uplink signal; wherein the first power control parameter includes information and / or open-loop power control parameters for measuring the downlink signal for calculating the path loss value of the transmit power; and the second power control parameter includes a closed-loop power control parameter or an open-loop power control parameter other than the first power control parameter.

8. The terminal device according to claim 7, characterized in that: The terminal device further includes: The second receiving unit is used to receive configuration information sent by the network device, where the configuration information is used to indicate a corresponding relationship between at least one SRS resource and at least one power control parameter, and the at least one SRS resource includes the SRS resource indicated by the SRS resource indication information.

9. The terminal device according to claim 7, characterized in that: The terminal device further includes: The fourth determining unit is used to determine the transmission power of the target uplink signal by adopting the power control parameters pre-configured by the network device.

10. The terminal device according to claim 7, characterized in that: The second determining unit is specifically configured to: A first power control parameter of the target uplink signal is determined according to the SRS resource indication information and an uplink multiple access mode used by the target uplink signal.

11. The terminal device according to claim 10, characterized in that: The second determining unit is specifically configured to: A first power control parameter of the target uplink signal is determined according to the power control parameter corresponding to the SRS resource indicated by the SRS resource indication information and the uplink multiple access mode used by the target uplink signal.

12. The terminal device according to claim 10, characterized in that: The uplink multiple access mode used by the target uplink signal is discrete Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM or cyclic prefix orthogonal frequency division multiplexing CP-OFDM.

13. A terminal device, characterized in that: include: A processor and a memory, wherein the memory is used to store computer instructions, and when the computer instructions are executed, the processor executes the method according to any one of claims 1 to 6.

14. A computer storage medium storing computer software instructions comprising a program for executing the method according to any one of claims 1 to 6.

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