Method for transmitting signals, terminal device and network device

Abstract

Embodiments of this application disclose a method for transmitting a signal, a terminal device, and a network device. The method includes: the terminal device determines channel state information-reference signal CSI-RS resource indication information corresponding to a target uplink signal; the terminal device determines a power control parameter of the target uplink signal according to the CSI-RS resource indication information; the terminal device determines a transmission power of the target uplink signal according to the power control parameter; the terminal device transmits the target uplink signal to the network device according to the transmission power. The method, terminal device, and network device in the embodiments of this application are beneficial 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 particularly, 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 an ongoing research issue. Summary of the Invention

[0003] In view of this, embodiments of the present application provide a method for transmitting signals, a terminal device, and a network device, 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 signals is provided. The method includes: a terminal device determines channel state information-reference signal CSI-RS resource indication information corresponding to a target uplink signal; the terminal device determines a power control parameter of the target uplink signal according to the CSI-RS resource indication information; the terminal device determines a transmission power of the target uplink signal according to the power control parameter; the terminal device transmits the target uplink signal to a network device according to the transmission power.

[0005] The CSI-RS resource indication information may be indication information for indicating CSI-RS resources. The network device may pre-configure or agree on one or more CSI-RS resources through a protocol. The network device may also pre-configure different CSI-RS resources or different groups of independent power control parameters corresponding to different CSI-RS resource indication information. A group of independent power control parameters includes at least one value of a power control parameter. The power control parameter may be any one or a combination of any number of parameters in the calculation formula of the transmission power.

[0006] Determining the transmission power of the target uplink signal by referring to the power control parameter corresponding to the CSI-RS resource indication information sent by the network device is conducive to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0007] In a possible implementation, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or a sounding reference signal SRS.

[0008] In a possible implementation, the target uplink signal is a PUSCH based on non-codebook precoding or a sounding reference signal SRS for obtaining transmission parameters of the PUSCH based on non-codebook precoding.

[0009] In a possible implementation, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain the precoding matrix or transmission beam of the target uplink signal, or to obtain the precoding matrix or transmission beam of the first SRS corresponding to the target uplink signal.

[0010] In a possible implementation, the first SRS is an SRS used to obtain the transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on the SRS resource indicated by the SRS resource indication information carried in the downlink control information DCI for scheduling the target uplink signal.

[0011] In a possible implementation, the method further includes: the terminal device receives the first information sent by the network device, and the first information carries the CSI-RS resource indication information; the terminal device determines the CSI-RS resource indication information corresponding to the target uplink signal, including: the terminal device determines the CSI-RS resource indication information from the first information.

[0012] In a possible implementation, if the target uplink signal is a PUSCH, the first information is the DCI for scheduling the PUSCH or the downlink signaling for configuring, triggering, or activating the second SRS corresponding to the PUSCH.

[0013] In a possible implementation, the second SRS is an SRS used to obtain the transmission parameters of the PUSCH, or the second SRS is an SRS transmitted on the SRS resource indicated by the SRS resource indication information included in the DCI for scheduling the PUSCH.

[0014] In a possible implementation, the transmission parameters include at least one of the following information: the frequency domain resources used, the number of layers, the precoding matrix, the modulation and coding scheme, and the transmission beam.

[0015] In a possible implementation, if the target uplink signal is an SRS, the first information is the downlink signaling for configuring, triggering, or activating the SRS.

[0016] In a possible implementation, the method further includes: the terminal device receives configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter; the terminal device determines the power control parameter of the target uplink signal according to the CSI-RS resource indication information, including: the terminal device determines the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0017] In a possible implementation, the method further includes: the terminal device receives configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter; the terminal device determines the power control parameter of the target uplink signal according to the CSI-RS resource indication information, including: the terminal device determines the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0018] In a possible implementation, the power control parameter includes at least one of the following information: the path loss value used to calculate the transmit power, the information of the downlink signal used to measure the path loss value for calculating the transmit power, the open-loop power control parameter, and the closed-loop power control parameter.

[0019] In a possible implementation, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index of the target power Po, or the index of the path loss weighting factor a.

[0020] In a possible implementation, the closed-loop power control parameter includes the index of the closed-loop power control process.

[0021] In a possible implementation, before the terminal device determines the CSI-RS resource indication information corresponding to the target uplink signal, the method further includes: the terminal device determines the transmit power of the target uplink signal by using the power control parameter preconfigured by the network device.

[0022] In a second aspect, a method for transmitting a signal is provided. The method includes: a network device sending channel state information-reference signal CSI-RS resource indication information corresponding to a target uplink signal to a terminal device, where the CSI-RS resource indication information is used by the terminal device to determine power control parameters of the target uplink signal; and the network device receiving the target uplink signal sent by the terminal device based on the power control parameters.

[0023] In a possible implementation, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or a sounding reference signal SRS.

[0024] In a possible implementation, the target uplink signal is a physical uplink shared channel PUSCH based on non-codebook precoding or a sounding reference signal SRS for obtaining transmission parameters of the physical uplink shared channel PUSCH based on non-codebook precoding.

[0025] In a possible implementation, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain a precoding matrix or a transmission beam of the target uplink signal, or is used to obtain a precoding matrix or a transmission beam of a first SRS corresponding to the target uplink signal.

[0026] In a possible implementation, the first SRS is an SRS for obtaining transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on an SRS resource indicated by SRS resource indication information carried in downlink control information DCI for scheduling the target uplink signal.

[0027] In a possible implementation, if the target uplink signal is a PUSCH, the CSI-RS resource indication information is carried in downlink control information DCI for scheduling the PUSCH or in downlink signaling for configuring, triggering, or activating a second SRS corresponding to the PUSCH.

[0028] In a possible implementation, the second SRS is an SRS for obtaining transmission parameters of the PUSCH, or the second SRS is an SRS transmitted on an SRS resource indicated by SRS resource indication information included in DCI for scheduling the PUSCH.

[0029] In a possible implementation, the transmission parameters include at least one of the following information: used frequency domain resources, number of layers, precoding matrix, modulation and coding scheme, and transmission beam.

[0030] In a possible implementation, if the target uplink signal is an SRS, the CSI-RS resource indication information is carried in downlink signaling for configuring, triggering, or activating the SRS.

[0031] In a possible implementation, the method further includes: the network device sending configuration information to the terminal device, where the configuration information is used to indicate the correspondence between the at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter.

[0032] In a possible implementation, the method further includes: the network device sending configuration information to the terminal device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter.

[0033] In a possible implementation, the power control parameter includes at least one of the following information: the path loss value used to calculate the transmission power, the information of the downlink signal used to measure the path loss value for calculating the transmission power, the open-loop power control parameter, and the closed-loop power control parameter.

[0034] In a possible implementation, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index of the target power Po, or the index of the path loss weighting factor a.

[0035] In a possible implementation, the closed-loop power control parameter includes the index of the closed-loop power control process.

[0036] In a third aspect, a terminal device is provided for performing the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes units for performing the method in the first aspect or any possible implementation of the first aspect.

[0037] In a fourth aspect, a network device is provided for performing the method in the second aspect or any possible implementation of the second aspect. Specifically, the network device includes units for performing the method in the second aspect or any possible implementation of the second aspect.

[0038] In a fifth aspect, a terminal device is provided. The terminal device includes: a memory, a processor, an input interface, and an output interface. Among them, the memory, the processor, the input interface, and the output interface are connected through a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory for performing the method in the first aspect or any possible implementation of the first aspect.

[0039] In a sixth aspect, a network device is provided, which includes a memory, a processor, an input interface, and an output interface. Among them, the memory, the processor, the input interface, and the output interface are connected through a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory and is used to execute the method in the second aspect or any possible implementation manner of the second aspect.

[0040] In a seventh aspect, a computer storage medium is provided for storing computer software instructions for executing the method in the first aspect or any possible implementation manner of the first aspect, or the method in the second aspect or any possible implementation manner of the second aspect, and includes programs designed for executing the above aspects.

[0041] In an eighth aspect, a computer program product including instructions is provided, which when running on a computer causes the computer to execute the method in the first aspect or any optional implementation manner of the first aspect, or the method in the second aspect or any optional implementation manner of the second aspect.

[0042] These aspects or other aspects of the present application will be more clearly understood in the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram showing an application scenario of an embodiment of the present application is shown.

[0044] Figure 2 A schematic block diagram showing the method for transmitting signals in an embodiment of the present application is shown.

[0045] Figure 3 Another schematic block diagram showing the method for transmitting signals in an embodiment of the present application is shown.

[0046] Figure 4 A schematic block diagram showing a terminal device in an embodiment of the present application is shown.

[0047] Figure 5 A schematic block diagram showing a network device in an embodiment of the present application is shown.

[0048] Figure 6 Another schematic block diagram showing a terminal device in an embodiment of the present application is shown.

[0049] Figure 7 Another schematic block diagram showing a network device in an embodiment of the present application is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application.

[0051] 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), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, New Radio (NR) or future 5G system, etc.

[0052] 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 can also be called other names in the communication field; further, the technical solutions of the embodiments of the present application can be applied to multi-carrier transmission systems adopting non-orthogonal multiple access technology, such as Orthogonal Frequency Division Multiplexing (OFDM), Filter Bank Multi-Carrier (FBMC), Generalized Frequency Division Multiplexing (GFDM), Filtered-OFDM (F-OFDM) systems, etc. adopting non-orthogonal multiple access technology.

[0053] 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 device, 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 capabilities, a computing device, or other processing devices 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). The embodiments of the present application do not limit this.

[0054] The network device in the embodiments of the present application may be a device for communicating with the terminal device. The network device may be a Base Transceiver Station (BTS) in GSM or CDMA, may also be a Node B (NB) in a WCDMA system, may also be an Evolutional Node B (eNB or eNodeB) in an LTE system, may also be a radio controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, etc. The embodiments of the present application do not limit this.

[0055] Figure 1 It is a schematic diagram of an application scenario of the embodiments of the present application. Figure 1 The communication system in 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, so as to communicate with the network. Figure 1 The arrows shown in may represent the uplink / downlink transmission through the cellular link between the terminal device 10 and the network device 20.

[0056] For the uplink signal, the power control of the terminal is of great significance in terms of power saving and suppressing inter-cell interference. Therefore, uplink power control is a key part of LTE. The uplink power control within a cell includes controlling the power of the Physical Uplink Shared Channel (PUSCH), the Physical Uplink Control Channel (PUCCH), and the Sounding Reference Signal (SRS) respectively.

[0057] In NR, two uplink transmission modes are introduced: the codebook-based transmission mode and the non-codebook-based transmission mode. For the codebook-based transmission mode, the uplink beam used for transmission is notified to the terminal through the beam indication information in the scheduling information. When the terminal uses different transmission beams, different power control parameters are required. The beam indication information is associated with the uplink power control parameters, and the corresponding power control parameters can be determined through the beam indication information. This association relationship is pre-notified to the terminal through RRC signaling.

[0058] For non-codebook uplink transmission, the network side can configure a corresponding CSI-RS resource for the uplink SRS or PUSCH. The terminal obtains the downlink channel information based on the CSI-RS resource, then obtains the uplink channel information based on the downlink channel information and channel reciprocity, and calculates the precoding matrix of the uplink SRS or PUSCH according to the uplink channel information. The uplink beam used for transmission can also be obtained by the terminal through the uplink-downlink beam correspondence, that is, the terminal can obtain the transmission beam of the uplink signal through the reception beam of the downlink signal, without the beam indication from the network side. At this time, how the terminal determines the corresponding power control parameters for different transmission beams is a problem.

[0059] Figure 2 Fig. shows a schematic block diagram of a method 100 for transmitting signals according to an embodiment of the present application. As Figure 2 shown, the method 100 includes the following parts or all of the content:

[0060] S110, the terminal device determines the channel state information-reference signal CSI-RS resource indication information corresponding to the target uplink signal;

[0061] S120, the terminal device determines the power control parameters of the target uplink signal according to the CSI-RS resource indication information;

[0062] S130, the terminal device determines the transmission power of the target uplink signal according to the power control parameters;

[0063] S140. The terminal device sends the target uplink signal to the network device according to the transmission power.

[0064] Specifically, the network device can pre-configure or agree through a protocol on one or more Channel State Information-Reference Signals (CSI-RS) resources. The CSI-RS transmitted on different CSI-RS resources can adopt different beams. Also, the network device can pre-configure or agree through a protocol on the correspondence between the one or more CSI-RS resources and power control parameters or the correspondence between one or more CSI-RS resource indication information and power control parameters. That is to say, each CSI-RS resource or each CSI-RS resource indication information can correspond to a set of independent power control parameters. The network device can indicate to the terminal device which power control parameters corresponding to a CSI-RS resource or CSI-RS resource indication information to use for the transmission of the target uplink signal. The terminal device can 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 can also directly determine the power control parameters indicated by the network device as the power control parameters of the target uplink signal. The terminal device can further determine the transmission power of the target uplink signal according to the determined power control parameters, and thus send the target uplink signal to the network device according to the determined transmission power.

[0065] Therefore, in the method for transmitting a signal according to the embodiments of the present application, by referring to the power control parameters corresponding to the CSI-RS 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, and thus the performance of system transmission can be improved.

[0066] The target uplink signal can be PUSCH, PUCCH, SRS, etc. The embodiments of the present application do not limit the type of the target uplink signal. As long as it is an uplink signal, the technical solution provided by the embodiments of the present application can be used to determine the transmission power.

[0067] Furthermore, the target uplink signal is a PUSCH based on non-codebook precoding or a sounding reference signal SRS for obtaining transmission parameters of a PUSCH based on non-codebook precoding. That is to say, the transmission of the PUSCH is based on a non-codebook transmission mode. For example, after receiving the CSI-RS resource indication information sent by the network device, the terminal device can obtain downlink channel information according to the CSI-RS resource indicated by the CSI-RS resource indication information, then obtain uplink channel information based on the downlink channel information and channel reciprocity, and calculate the precoding information of the PUSCH according to the uplink channel information. The terminal device can also obtain the transmission beam of the PUSCH through beam correspondence, that is, the reception beam for the terminal device to receive CSI-RS can be used to obtain the transmission beam for transmitting the PUSCH. The transmission of the SRS can also be based on a non-codebook transmission mode. The target uplink signal can also be an SRS used to obtain the transmission parameters of the foregoing PUSCH.

[0068] Optionally, in the embodiments of this application, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain the precoding matrix or transmission beam of the target uplink signal, or is used to obtain the precoding matrix or transmission beam of a first SRS corresponding to the target uplink signal.

[0069] It has been introduced above how the CSI-RS resource indicated by the CSI-RS resource indication information obtains the precoding matrix or transmission beam of the PUSCH. This method is also applicable to any uplink signal, such as the foregoing PUCCH or SRS.

[0070] Furthermore, the first SRS is an SRS for obtaining the transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on the SRS resource indicated by the SRS resource indication information carried in the downlink control information DCI for scheduling the target uplink signal.

[0071] Optionally, in the embodiments of the present application, the transmission parameters of the above various uplink signals can be obtained through the first SRS. The transmission parameters may include at least one of the following information: frequency domain resources used, number of layers, precoding matrix, modulation and coding scheme, and transmission beam. That is, after receiving the CSI-RS resource indication information, the terminal device can determine the precoding matrix or transmission beam of the first SRS according to the indicated CSI-RS resource and channel reciprocity. After the terminal sends the first SRS based on the precoding matrix or transmission beam, the network side can determine the transmission parameters of the target uplink signal according to the first SRS, and indicate the determined transmission parameters to the terminal, or schedule the terminal according to the determined transmission parameters. The first SRS is used to obtain the transmission parameters of the target uplink signal, which can be realized by the number of antenna ports of the first SRS being equal to the number of transmission ports of the target uplink signal.

[0072] In addition, the association between the target uplink signal and the SRS can also be reflected by carrying the SRS resource indication information indicating the SRS resource in the downlink control information (DCI) for scheduling the target uplink signal. Generally, the SRS resource indication information carried in the DCI is used to indicate the SRS resource associated with the target uplink signal, and the SRS transmitted on this resource is the first SRS.

[0073] In the embodiments of the present application, "corresponding" in the CSI-RS resource indication information corresponding to the target uplink signal may mean that the network device and the terminal device have pre-agreed or the network device has configured a certain indication method to belong to a specific uplink signal. For example, it can be agreed that a certain specific field in the downlink control information (Downlink Control Information, DCI) for scheduling the PUSCH is the CSI-RS resource indication information corresponding to the PUSCH.

[0074] In addition, those skilled in the art understand that the CSI-RS resource indication information may be indication information for indicating the CSI-RS resource. For example, the network device and the terminal device have pre-agreed on 4 CSI-RS resources and have pre-agreed to use 2 bits to indicate these 4 CSI-RS resources. Specifically, the indication information corresponding to CSI-RS resource 1 is 00, the indication information corresponding to CSI-RS resource 2 is 01, the indication information corresponding to CSI-RS resource 3 is 10, and the indication information corresponding to CSI-RS resource 4 is 11.

[0075] It should be understood that the power control parameters in the embodiments of the present application may be any one or any combination of multiple parameters in the calculation formula of the transmission power. For example, the calculation formula of the transmission power generally includes: the maximum allowable transmission power of the terminal device, the power offset, the transmission bandwidth of the uplink signal on the subframe, the target reception power, the path loss compensation factor, the closed-loop power adjustment amount, and the path loss. That is to say, in the embodiments of the present application, a set of power control parameters corresponding to each CSI-RS resource or each CSI-RS resource indication information includes the values of at least one parameter.

[0076] The following will respectively take the target uplink signals as PUSCH and SRS as examples to describe in detail the bearing manner of CSI-RS in the embodiments of the present application.

[0077] Optionally, in the embodiments of the present application, the method further includes: the terminal device receives first information sent by the network device, and the first information carries the CSI-RS resource indication information; the terminal device determines the CSI-RS resource indication information corresponding to the target uplink signal, including: the terminal device determines the CSI-RS resource indication information from the first information.

[0078] It should be understood that the first information may be high-layer signaling such as Radio Resource Control (RRC) signaling, Media Access Control (MAC) signaling, DCI signaling, system information, etc.

[0079] Embodiment 1: If the target uplink signal is PUSCH, and the CSI-RS resource indication information is the CSI-RS resource indication information configured by the network device for the PUSCH, the CSI-RS resource indication information may be carried by the DCI scheduling the PUSCH.

[0080] Embodiment 2: If the target uplink signal is a PUSCH, and the CSI-RS resource indication information is the CSI-RS resource indication information configured by the network device for the SRS corresponding to the PUSCH, then the CSI-RS resource indication information can be carried by the downlink signaling that configures, triggers, or activates the SRS transmission. Specifically, if the SRS is a periodic SRS, the CSI-RS resource indication information can be carried by the RRC signaling that configures the SRS transmission. If the SRS is an aperiodic SRS, the CSI-RS resource indication information can be carried by the DCI that triggers the SRS transmission. At this time, the transmission resource of the DCI and the CSI-RS resource indicated by the CSI-RS resource indication information can be included in the same time slot. If the SRS is a semi-persistent SRS, the CSI-RS resource indication information can be carried by the MAC signaling that activates the SRS transmission or by the RRC signaling.

[0081] Embodiment 3: If the target uplink signal is an SRS, then the CSI-RS resource indication information can be carried by the downlink signaling that configures, triggers, or activates the SRS transmission. Specifically, if the SRS is a periodic SRS, the CSI-RS resource indication information can be carried by the RRC signaling that configures the SRS transmission. If the SRS is an aperiodic SRS, the CSI-RS resource indication information can be carried by the DCI that triggers the SRS transmission. At this time, the transmission resource of the DCI and the CSI-RS resource indicated by the CSI-RS resource indication information can be included in the same time slot. If the SRS is a semi-persistent SRS, the CSI-RS resource indication information can be carried by the MAC signaling that activates the SRS transmission or by the RRC signaling.

[0082] Optionally, in the embodiments of this application, the method further includes: the terminal device receives configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter; the terminal device determines the power control parameter of the target uplink signal according to the CSI-RS resource indication information, including: the terminal device determines the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0083] Optionally, in the embodiments of the present application, the method further includes: the terminal device receives configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter; the terminal device determines the power control parameters of the target uplink signal according to the CSI-RS resource indication information, including: the terminal device determines the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0084] Specifically, the network side pre-configures the values of a set of power control parameters corresponding to each of the at least one CSI-RS resource or each of the at least one CSI-RS resource indication information, so that the terminal can determine the values of a corresponding set of power control parameters according to the currently indicated CSI-RS resource or the current CSI-RS resource indication information. Here, a set of power control parameters may only include one power control parameter, such as an open-loop power control parameter or a path loss value, or may include multiple parameters, such as an open-loop power control parameter and a path loss value.

[0085] For example, the network device and the terminal device pre-agree on 4 CSI-RS resources, and each of the 4 CSI-RS resources has independent power control parameters. Then, the network device and the terminal device can also pre-agree to use 2 bits to indicate the 4 CSI-RS resources. Specifically, the indication information corresponding to CSI-RS resource 1 is 00, the indication information corresponding to CSI-RS resource 2 is 01, the indication information corresponding to CSI-RS resource 3 is 10, and the indication information corresponding to CSI-RS resource 4 is 11. That is to say, the network device can configure that 00 corresponds to power control parameter group 1, 01 corresponds to power control parameter group 2, 10 corresponds to power control parameter group 3, and 11 corresponds to power control parameter group 4. The network device can also configure that CSI-RS resource 1 corresponds to power control parameter group 1, CSI-RS resource 2 corresponds to power control parameter group 2, CSI-RS resource 3 corresponds to power control parameter group 3, and CSI-RS resource 4 corresponds to power control parameter group 4. Among them, power control parameter groups 1-4 correspond to different value situations of the same set of power control parameters.

[0086] At least one of the CSI-RS resource and the CSI-RS resource indication information has a corresponding relationship with the power control parameter. That is to say, after receiving the CSI-RS resource indication information, the terminal device determines the corresponding power control parameter according to the value of the indication information. The terminal device may also, after receiving the CSI-RS resource indication information, first determine the CSI-RS resource indicated by the indication information according to the indication information, and further determine the corresponding power control parameter according to the CSI-RS resource. This application does not impose any limitations on this.

[0087] Optionally, in the embodiments of this application, the power control parameter includes at least one of the following information: the path loss value used to calculate the transmission power, the information of the downlink signal used to measure the path loss value for calculating the transmission power, the open-loop power control parameter, and the closed-loop power control parameter.

[0088] Among them, the information of the downlink signal used to measure the path loss value for calculating the transmission power can be regarded as path loss reference correlation information, that is, it can be a subset of the downlink signals used to estimate the path loss of the target uplink signal. For example, the path loss reference correlation 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. The downlink signal can be a downlink synchronization signal block (SSB), CSI-RS, or physical broadcast channel (PBCH), demodulation reference signal (DMRS). For example, the terminal performs downlink path loss measurement based on the CSI-RS resource indicated by the CSI-RS resource indication information, so as to obtain the path loss value. For another example, the terminal determines the index k of a corresponding downlink signal according to the CSI-RS resource indication information, and performs downlink path loss measurement based on the downlink signal indicated by the index k, so as to obtain the path loss value. Here, the corresponding relationship between the CSI-RS resource indication information and the index k of the downlink signal is pre-configured by the network side through high-layer signaling.

[0089] Optionally, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index j of the target power Po, or the index p of the path loss weighting factor a. Among them, the index j indicates a target power from multiple target power values pre-configured by the high-layer signaling, and the index p indicates a path loss weighting factor from multiple path loss weighting factor values pre-configured by the high-layer signaling. Here, the correspondence between the value of the target power Po, the value of the path loss weighting factor a, the index j of the target power Po, and the index p of the path loss weighting factor and the CSI-RS resource indication information can be pre-configured by the high-layer signaling.

[0090] Optionally, the closed-loop power control parameter includes the index l of the closed-loop power control process. Among them, the index l indicates a power control process from at least one pre-defined power control process, and the correspondence between the index l and the CSI-RS resource indication information can be pre-configured by the high-layer signaling.

[0091] Optionally, in the embodiment of the present application, before the terminal device determines the CSI-RS resource indication information corresponding to the target uplink signal, the method further includes: the terminal device determines the transmission power of the target uplink signal by using the power control parameter pre-configured by the network device.

[0092] Specifically, if the terminal does not receive the CSI-RS resource indication information sent by the network side, it uses the power control parameter pre-configured by the network side for the target uplink signal until it receives the CSI-RS resource indication information. Specifically, after receiving the CSI-RS resource indication information, it uses the power control parameter corresponding to the CSI-RS resource indication information to replace the value pre-configured by the network side.

[0093] Figure 3 The schematic block diagram of the method 200 for transmitting signals in the embodiment of the present application is shown. As Figure 3 shown, the method 200 includes the following parts or all of the content:

[0094] S210, the network device sends the channel state information-reference signal CSI-RS resource indication information corresponding to the target uplink signal to the terminal device, and the CSI-RS resource indication information is used for the terminal device to determine the power control parameter of the target uplink signal;

[0095] S220, the network device receives the target uplink signal sent by the terminal device based on the power control parameter.

[0096] Therefore, the method for transmitting a signal according to the embodiments of the present application determines the transmission power of the target uplink signal by referring to the power control parameters corresponding to the CSI-RS resource indication information sent by the network device, which is beneficial to improving the accuracy of uplink power control, and thus can improve the performance of system transmission.

[0097] Optionally, in the embodiments of the present application, the target uplink signal is a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), or a Sounding Reference Signal (SRS).

[0098] Optionally, in the embodiments of the present application, the target uplink signal is a PUSCH based on non-codebook precoding or an SRS for obtaining the transmission parameters of the PUSCH based on non-codebook precoding.

[0099] Optionally, in the embodiments of the present application, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain the precoding matrix or transmission beam of the target uplink signal, or to obtain the precoding matrix or transmission beam of the first SRS corresponding to the target uplink signal.

[0100] Optionally, in the embodiments of the present application, the first SRS is an SRS for obtaining the transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on the SRS resource indicated by the SRS resource indication information carried in the Downlink Control Information (DCI) for scheduling the target uplink signal.

[0101] Optionally, in the embodiments of the present application, if the target uplink signal is a PUSCH, the CSI-RS resource indication information is carried in the DCI for scheduling the PUSCH or in the downlink signaling for configuring, triggering, or activating the second SRS corresponding to the PUSCH.

[0102] Optionally, in the embodiments of the present application, the second SRS is an SRS for obtaining the transmission parameters of the PUSCH, or the second SRS is an SRS transmitted on the SRS resource indicated by the SRS resource indication information included in the DCI for scheduling the PUSCH.

[0103] Optionally, in the embodiments of the present application, the transmission parameters include at least one of the following information: the frequency domain resources used, the number of layers, the precoding matrix, the modulation and coding scheme, and the transmission beam.

[0104] Optionally, in the embodiments of the present application, if the target uplink signal is an SRS, the CSI-RS resource indication information is carried in the downlink signaling for configuring, triggering, or activating the SRS.

[0105] Optionally, in the embodiments of the present application, the method further includes: the network device sends configuration information to the terminal device, where the configuration information is used to indicate the correspondence between the at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter.

[0106] Optionally, in the embodiments of the present application, the method further includes: the network device sends configuration information to the terminal device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes the values of at least one power control parameter.

[0107] Optionally, in the embodiments of the present application, the power control parameter includes at least one of the following information: the path loss value used to calculate the transmission power, the information of the downlink signal used to measure the path loss value for calculating the transmission power, the open-loop power control parameter, and the closed-loop power control parameter.

[0108] Optionally, in the embodiments of the present application, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index of the target power Po, or the index of the path loss weighting factor a.

[0109] Optionally, in the embodiments of the present application, the closed-loop power control parameter includes the index of the closed-loop power control process.

[0110] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0111] It should be understood that the interaction between the network device described by the network device and the terminal device, as well as the related characteristics and functions, 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. For the sake of brevity, it will not be repeated here.

[0112] It should also be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0113] The method for transmitting a signal according to an embodiment of the present application has been described in detail above. Next, a device for transmitting a signal according to an embodiment of the present application will be described in combination with Figures 4 to 7 , and the technical features described in the method embodiment are applicable to the following device embodiments.

[0114] Figure 4 FIG. shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As Figure 4 shown, the terminal device 300 includes:

[0115] A first determination unit 310, configured to determine channel state information-reference signal CSI-RS resource indication information corresponding to a target uplink signal;

[0116] A second determination unit 320, configured to determine a power control parameter of the target uplink signal according to the CSI-RS resource indication information;

[0117] A third determination unit 330, configured to determine a transmission power of the target uplink signal according to the power control parameter;

[0118] A transmission unit 340, configured to transmit the target uplink signal to a network device according to the transmission power.

[0119] Therefore, the terminal device according to the embodiment of the present application is beneficial to improving the accuracy of power control, thereby improving the performance of system transmission.

[0120] Optionally, in the embodiment of the present application, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or a sounding reference signal SRS.

[0121] Optionally, in the embodiment of the present application, the target uplink signal is a PUSCH based on non-codebook precoding or a sounding reference signal SRS for obtaining transmission parameters of a PUSCH based on non-codebook precoding.

[0122] Optionally, in the embodiment of the present application, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain a precoding matrix or a transmission beam of the target uplink signal, or is used to obtain a precoding matrix or a transmission beam of a first SRS corresponding to the target uplink signal.

[0123] Optionally, in the embodiment of the present application, the first SRS is an SRS for obtaining transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on an SRS resource indicated by SRS resource indication information carried in downlink control information DCI for scheduling the target uplink signal.

[0124] Optionally, in the embodiments of the present application, the terminal device further includes: a first receiving unit, configured to receive first information sent by the network device, where the first information carries the CSI-RS resource indication information; the first determining unit is specifically configured to: determine the CSI-RS resource indication information from the first information.

[0125] Optionally, in the embodiments of the present application, if the target uplink signal is a PUSCH, the first information is DCI for scheduling the PUSCH or downlink signaling for configuring, triggering, or activating a second SRS corresponding to the PUSCH.

[0126] Optionally, in the embodiments of the present application, the second SRS is an SRS for obtaining transmission parameters of the PUSCH, or the second SRS is an SRS transmitted on an SRS resource indicated by the SRS resource indication information included in the DCI for scheduling the PUSCH.

[0127] Optionally, in the embodiments of the present application, the transmission parameters include at least one of the following information: the frequency domain resources used, the number of layers, the precoding matrix, the modulation and coding scheme, and the transmission beam.

[0128] Optionally, in the embodiments of the present application, if the target uplink signal is an SRS, the first information is downlink signaling for configuring, triggering, or activating the SRS.

[0129] Optionally, in the embodiments of the present application, the terminal device further includes: a second receiving unit, configured to receive configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter; the second determining unit is specifically configured to: determine the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0130] Optionally, in the embodiments of the present application, the terminal device further includes: a second receiving unit, configured to receive configuration information sent by the network device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter; the second determining unit is specifically configured to: determine the power control parameter according to the CSI-RS resource indication information and the configuration information.

[0131] Optionally, in the embodiments of the present application, the power control parameter includes at least one of the following information: the path loss value used to calculate the transmission power, the information of the downlink signal used to measure the path loss value for calculating the transmission power, the open-loop power control parameter, and the closed-loop power control parameter.

[0132] Optionally, in the embodiments of the present application, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index of the target power Po, or the index of the path loss weighting factor a.

[0133] Optionally, in the embodiments of the present application, the closed-loop power control parameter includes the index of the closed-loop power control process.

[0134] Optionally, in the embodiments of the present application, before the terminal device determines the CSI-RS resource indication information corresponding to the target uplink signal, the terminal device further includes: a fourth determination unit, configured to determine the transmission power of the target uplink signal by using the power control parameter pre-configured by the network device before the first determination unit determines the CSI-RS resource indication information corresponding to the target uplink signal.

[0135] It should be understood that the terminal device 300 according to the embodiments of the present application may correspond to the terminal device in the method embodiments of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively for implementing Figure 2 the corresponding processes of the terminal device in the method. For the sake of brevity, they are not described herein again.

[0136] Figure 5 The schematic block diagram of the network device 400 according to the embodiments of the present application is shown. As Figure 5 shown, the network device 400 includes:

[0137] A first transmission unit 410, configured to send channel state information-reference signal CSI-RS resource indication information corresponding to a target uplink signal to a terminal device, where the CSI-RS resource indication information is used for the terminal device to determine the power control parameter of the target uplink signal;

[0138] A receiving unit 420, configured to receive the target uplink signal sent by the terminal device based on the power control parameter.

[0139] Therefore, the network device according to the embodiments of the present application is beneficial to improving the accuracy of power control, thereby improving the performance of system transmission.

[0140] Optionally, in the embodiments of the present application, the target uplink signal is a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or a sounding reference signal SRS.

[0141] Optionally, in the embodiments of the present application, the target uplink signal is a Physical Uplink Shared Channel (PUSCH) based on non-codebook precoding or a sounding reference signal (SRS) for obtaining transmission parameters of the PUSCH based on non-codebook precoding.

[0142] Optionally, in the embodiments of the present application, the CSI-RS resource indicated by the CSI-RS resource indication information is used to obtain a precoding matrix or a transmission beam of the target uplink signal, or to obtain a precoding matrix or a transmission beam of a first SRS corresponding to the target uplink signal.

[0143] Optionally, in the embodiments of the present application, the first SRS is an SRS for obtaining transmission parameters of the target uplink signal, or the first SRS is an SRS transmitted on an SRS resource indicated by the SRS resource indication information carried in the Downlink Control Information (DCI) for scheduling the target uplink signal.

[0144] Optionally, in the embodiments of the present application, if the target uplink signal is a PUSCH, the CSI-RS resource indication information is carried in the DCI for scheduling the PUSCH or in the downlink signaling for configuring, triggering, or activating a second SRS corresponding to the PUSCH.

[0145] Optionally, in the embodiments of the present application, the second SRS is an SRS for obtaining transmission parameters of the PUSCH, or the second SRS is an SRS transmitted on an SRS resource indicated by the SRS resource indication information included in the DCI for scheduling the PUSCH.

[0146] Optionally, in the embodiments of the present application, the transmission parameters include at least one of the following information: the frequency domain resources used, the number of layers, the precoding matrix, the modulation and coding scheme, and the transmission beam.

[0147] Optionally, in the embodiments of the present application, if the target uplink signal is an SRS, the CSI-RS resource indication information is carried in the downlink signaling for configuring, triggering, or activating the SRS.

[0148] Optionally, in the embodiments of the present application, the network device further includes: a second sending unit, configured to send configuration information to the terminal device, where the configuration information is used to indicate the correspondence between the at least one CSI-RS resource and at least one set of power control parameters, the at least one CSI-RS resource includes the CSI-RS resource indicated by the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter.

[0149] Optionally, in the embodiments of the present application, the network device further includes: a second sending unit, configured to send configuration information to the terminal device, where the configuration information is used to indicate the correspondence between at least one CSI-RS resource indication information and at least one set of power control parameters, the at least one CSI-RS resource indication information includes the CSI-RS resource indication information, and each set of power control parameters in the at least one set of power control parameters includes values of at least one power control parameter.

[0150] Optionally, in the embodiments of the present application, the power control parameter includes at least one of the following information: a path loss value for calculating the transmission power, information about a downlink signal for measuring the path loss value for calculating the transmission power, an open-loop power control parameter, and a closed-loop power control parameter.

[0151] Optionally, in the embodiments of the present application, the open-loop power control parameter includes the value of the target power Po, the value of the path loss weighting factor a, the index of the target power Po, or the index of the path loss weighting factor a.

[0152] Optionally, in the embodiments of the present application, the closed-loop power control parameter includes an index of a closed-loop power control process.

[0153] It should be understood that the network device 400 according to the embodiments of the present application may correspond to the network device in the method embodiments of the present application, and the above and other operations and / or functions of each unit in the network device 400 respectively implement Figure 3 the corresponding processes of the network device in the method. For the sake of brevity, details are not described herein again.

[0154] As Figure 6 shown, the embodiments of the present application further provide a terminal device 500, which may be the terminal device 300 in Figure 4 and is capable of performing the content of the terminal device corresponding to the method 100 in Figure 2 . The terminal device 500 includes: an input interface 510, an output interface 520, a processor 530, and a memory 540. The input interface 510, the output interface 520, the processor 530, and the memory 540 may be connected through a bus system. The memory 540 is used to store programs, instructions, or codes. The processor 530 is configured 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 foregoing method embodiments.

[0155] Therefore, the terminal device in the embodiments of the present application is beneficial to improving the accuracy of uplink power control, thereby improving the performance of system transmission.

[0156] It should be understood that in the embodiments 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 (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0157] The memory 540 may include a read-only memory and a random access memory, and provide instructions and data to the processor 530. A part of the memory 540 may also include a non-volatile random access memory. For example, the memory 540 may also store information about the device type.

[0158] In the implementation process, the contents of the above method may be completed by the integrated logic circuit in the hardware of the processor 530 or instructions in the form of software. The content of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by the hardware processor, or executed and completed by a combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the art 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. This storage medium is located in the memory 540, and the processor 530 reads the information in the memory 540 and combines its hardware to complete the content of the above method. To avoid repetition, it will not be described in detail here.

[0159] In a specific implementation manner, the first determination unit, the second determination unit, the third determination unit, and the fourth determination unit in the terminal device 300 may be implemented by Figure 6 the processor 530 in, and the sending unit of the terminal device 300 may be implemented by Figure 6 the output interface 520 in, and the first receiving unit and the second receiving unit of the terminal device 300 may be implemented by Figure 6 the input interface 510 in.

[0160] As Figure 7 shown, the embodiments of the present application further provide a network device 600, and the network device 600 may be Figure 5 the network device 400 in, and it can be used to execute the same as Figure 3Content of the network device corresponding to Method 200. The network device 600 includes: an input interface 610, an output interface 620, a processor 630, and a memory 640. 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 code. The processor 630 is configured to execute the programs, instructions, or code 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 foregoing method embodiments.

[0161] Therefore, the network device according to the embodiments of the present application is conducive to improving the accuracy of power control, thereby improving the performance of system transmission.

[0162] It should be understood that in the embodiments 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 (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0163] The memory 640 may include a read-only memory and a random access memory, and provide instructions and data to the processor 630. A part of the memory 640 may also include a non-volatile random access memory. For example, the memory 640 may also store information about the device type.

[0164] In the implementation process, the various contents of the foregoing method may be completed by the integrated logic circuit in the hardware of the processor 630 or the instructions in the form of software. The content of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by the hardware processor, or executed and completed by a combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the art 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. This storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and combines its hardware to complete the content of the foregoing method. To avoid repetition, it will not be described in detail here.

[0165] In a specific implementation manner, the first sending unit and the second sending unit in the network device 400 may beFigure 7 The output interface 620 in Figure 7 can be implemented by the input interface 610 in the network device 400.

[0166] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0167] 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 foregoing method embodiments and will not be elaborated herein.

[0168] In several embodiments provided in this 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 merely illustrative. For example, the division of the unit is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical, or other form.

[0169] 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 can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0170] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0171] 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 this application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of each embodiment of this application. The foregoing storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0172] As described above, the above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A communication method for a terminal device, characterized in that, Comprising: Receiving, from a network device, information indicating a channel state information-reference signal (CSI-RS) resource, where the information corresponds to a physical uplink control channel (PUCCH); Determining a transmission beam of the PUCCH according to the CSI-RS resource indicated by the information; Determining, according to the information, power control parameters of the PUCCH, where the power control parameters include information on a downlink signal for measuring a path loss value used for calculating a transmission power, an index of a target power Po, and an index of a closed-loop power control process; Determining the transmission power of the PUCCH according to the power control parameters; Sending the PUCCH to the network device according to the transmission power.

2. The method according to claim 1, characterized in that The CSI-RS resource indicated by the information is used to obtain a precoding matrix or a transmission beam of the PUCCH.

3. A method for transmitting a signal, characterized in that, Comprising: The network device sending information indicating a channel state information-reference signal (CSI-RS) resource to a terminal device, where the information corresponds to a physical uplink control channel (PUCCH); The terminal device determining a transmission beam of the PUCCH according to the CSI-RS resource indicated by the information; The terminal device determining, according to the information, power control parameters of the PUCCH, where the power control parameters include information on a downlink signal for measuring a path loss value used for calculating a transmission power, an index of a target power Po, and an index of a closed-loop power control process; The terminal device determining the transmission power of the PUCCH according to the power control parameters; The network device receiving the PUCCH sent by the terminal device based on the power control parameters.

4. The method according to claim 3, characterized in that The CSI-RS resource indicated by the information is used to obtain a precoding matrix or a transmission beam of the PUCCH.

5. A terminal device, characterized in that, The terminal device includes: A receiving unit, configured to receive, from a network device, information indicating a channel state information-reference signal (CSI-RS) resource, where the information corresponds to a physical uplink control channel (PUCCH); A first determining unit, configured to determine a transmission beam of the PUCCH according to the CSI-RS resource indicated by the information; A second determining unit, configured to determine, according to the information, power control parameters of the PUCCH, where the power control parameters include information on a downlink signal for measuring a path loss value used for calculating a transmission power, an index of a target power Po, and an index of a closed-loop power control process; A third determining unit, configured to determine the transmission power of the PUCCH according to the power control parameters; A sending unit, configured to send the PUCCH to the network device according to the determined transmission power.

6. The terminal device according to claim 5, characterized in that The CSI-RS resource indicated by the information is used to obtain a precoding matrix or a transmission beam of the PUCCH.

7. A network device, characterized in that, The network device includes: A sending unit, configured to send information indicating a channel state information-reference signal (CSI-RS) resource to a terminal device, where the information corresponds to a physical uplink control channel (PUCCH); A receiving unit, configured to receive the PUCCH sent by the terminal device, where the transmission beam of the PUCCH is determined by the terminal device according to the CSI-RS resource indicated by the information. The power control parameters of the PUCCH are determined by the terminal device according to the information, and the power control parameters include information on a downlink signal for measuring a path loss value used for calculating a transmission power, an index of a target power Po, and an index of a closed-loop power control process. The transmission power of the PUCCH transmitted by the terminal device is determined by the terminal device according to the power control parameters.

8. The network device according to claim 7, characterized in that The CSI-RS resource indicated by the information is used to obtain a precoding matrix or a transmission beam of the PUCCH.

9. A terminal device, comprising: An input interface, an output interface, a processor, and a memory, the input interface, the output interface, the processor, and the memory are connected through a bus system, the memory is used to store programs, instructions, or codes, and the processor is used to execute the programs, instructions, or codes in the memory to control the input interface to receive signals, control the output interface to send signals, and execute the method according to claim 1 or 2.

10. A network device, comprising: An input interface, an output interface, a processor, and a memory, the input interface, the output interface, the processor, and the memory are connected through a bus system, the memory is used to store programs, instructions, or codes, and the processor is used to execute the programs, instructions, or codes in the memory to control the input interface to receive signals, control the output interface to send signals, and execute the method according to claim 3 or 4.

Images