Power control method and communication apparatus

Abstract

The present application provides a power control method, comprising: a terminal device acquires indication information of at least one power control value of an SRS and indication information of at least one time unit set, the at least one time unit set having one-to-one correspondence with the at least one power control value; on the basis of a first power control value corresponding to a first time unit set among the at least one time unit set, the terminal device determines the sending power of the SRS on the first time unit set; and the terminal device sends the SRS to a network device on a time unit in the first time unit set on the basis of the sending power. In a multi-station collaboration scenario, a terminal device acquires at least one power control value and at least one time unit set, and determines, on a first time unit set among the at least one time unit set, the sending power of an SRS by using the power control value corresponding to the first time unit set, so that the resource overhead of the terminal device frequently acquiring power control values can be reduced, and the transmission performance in the multi-station collaboration scenario is improved.

Description

A power control method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 30, 2023, with application number 202311112822.4 and invention name “A power control method and communication device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] In a mobile communication system, network equipment obtains uplink channel state information, mainly by receiving the sounding reference signal (SRS) sent by the terminal device to perform channel estimation. Among them, since the time division duplex (TDD) system has uplink and downlink channel reciprocity, the network equipment can also obtain the channel information of the downlink channel using the SRS channel estimation. Generally speaking, the SRS of the terminal devices in the cell are orthogonally staggered through orthogonal dimensions such as orthogonal frequency division multiplexing (OFDM) symbols in the time domain, the comb structure in the frequency domain, and the cyclic shift in the code domain to ensure that the SRSs of different terminal devices do not interfere with each other. The SRSs of terminal devices between cells may occupy the same resources. By allocating SRS sequences with lower cross-correlation, the interference of SRSs can be further reduced.

[0004] In non-cooperative scenarios, a network device's SRS measurement is subject to weak interference from neighboring network devices. In multi-station cooperative scenarios, a network device's SRS measurement is subject to strong interference from other communication links, resulting in a decrease in the SRS signal-to-interference plus noise ratio (SINR), reduced channel measurement accuracy, and degraded system transmission performance.

[0005] Therefore, in the scenario of multi-station collaboration, improving channel measurement accuracy by controlling the SRS transmission power is a current research hotspot.

[0006] Summary of the Invention

[0007] The present application provides a power control method and a communication device, which can reduce the signaling overhead of a network device indicating an SRS power control value in a multi-station collaboration scenario and improve the channel measurement accuracy of the SRS.

[0008] In a first aspect, a power control method is provided. The method may be performed by a terminal device or a component of the terminal device (such as a chip or chip system, etc.), and this application does not limit this. The method includes:

[0009] The terminal device obtains indication information of at least one power control value of the sounding reference signal SRS and indication information of at least one time unit set, and the at least one time unit set corresponds one-to-one to the at least one power control value; the terminal device determines the transmission power of the SRS on the first time unit set according to the first power control value corresponding to the first time unit set in the at least one time unit set; the terminal device sends the SRS to the network device according to the transmission power on the time unit in the first time unit set.

[0010] It should be understood that the power control value in this application may also be referred to as a power adjustment value, a power offset value, etc. For example, the power control value may be a transmit power control (TPC) command value. The at least one power control value in this application includes one or more power control values. The one or more power control values ​​correspond one-to-one to one or more time unit sets.

[0011] It should be understood that each of the at least one time unit set includes at least one time unit, and the time units belonging to the same time unit set correspond to the same power control value. Optionally, the time intervals between the time units belonging to the same time unit set may be the same.

[0012] According to the method provided in this application, a terminal device obtains at least one power control value and at least one time unit set for an SRS. The terminal device determines the transmit power of the SRS based on a power control value in the at least one power control value, using the power control value for the time units in the time unit set corresponding to the power control value. This method avoids the terminal device frequently obtaining a single SRS power control value to calculate the SRS transmit power, further reducing the complexity and resource overhead of the terminal device and improving the channel measurement accuracy of the SRS.

[0013] In combination with the first aspect, in some possible implementations, the indication information of at least one time unit set is determined based on the indication information of at least one effective time offset and / or the indication information of at least one effective time period, and the terminal device obtains the indication information of at least one power control value of the SRS and the indication information of at least one time unit set, including: the terminal device obtains the indication information of at least one power control value of the sounding reference signal SRS, as well as the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0014] It should be understood that the at least one time unit set is determined based on at least one effective time offset and at least one effective time period, that is, the at least one effective time offset and the at least one effective time period can determine the at least one time unit set. The at least one time unit set has a one-to-one correspondence with at least one power control value. The terminal device determines the at least one time unit set based on the at least one effective time period and the at least one effective time offset, and determines the SRS transmit power based on the power control value corresponding to the at least one time unit set.

[0015] In conjunction with the first aspect, in some possible implementations, the terminal device obtains indication information of at least one power control value, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0016] The terminal device receives first information and second information, the first information includes indication information of at least one power control value, and the second information includes indication information of at least one effective time offset and / or indication information of at least one effective time period.

[0017] It should be understood that the terminal device may obtain the indication information of at least one power control value of the SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period through different information carriers, such as first information and second information. The first information includes the indication information of at least one power control value of the SRS, and the second information includes the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0018] In combination with the first aspect, in some possible implementations, the first information includes a first field, the first field is used to indicate at least one power control value, or the first information includes a first index, and the first index corresponds to at least one power control value.

[0019] It should be understood that the first information may directly indicate at least one power control value of the SRS via the first field. After receiving the first information, the terminal device may determine at least one power control value of the SRS based on the first field in the first information. The network device may reuse existing downlink information and add a new field to indicate at least one power control value of the SRS, thereby avoiding compatibility issues.

[0020] It should be understood that the terminal device is predefined or preconfigured with a rule (e.g., a table) regarding the first index and at least one power control value of the SRS, that is, the network device can directly indicate the index of the table (e.g., the first index) or the serial number of the table in the first information. The terminal device can directly determine the at least one power control value of the SRS corresponding to the first index based on the first index and the predefined table, thereby reducing resource overhead.

[0021] In conjunction with the first aspect, in some possible implementations, the terminal device obtains indication information of at least one power control value, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0022] The terminal device receives third information, which includes indication information of at least one power control value, and indication information of at least one effective time offset and / or indication information of at least one effective time period.

[0023] It should be understood that the terminal device may obtain the indication information of at least one power control value of the SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period through the same information, such as third information. The third information includes the indication information of at least one power control value of the SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0024] In combination with the first aspect, in some possible implementations, the third information includes a second field, which is used to indicate at least one power control value, and at least one effective time offset and / or at least one effective time period, or the third information includes a second index, which corresponds to at least one power control value, and at least one effective time offset and / or at least one effective time period.

[0025] It should be understood that the third information can directly indicate the indication information of at least one power control value of SRS, as well as the indication information of at least one effective time offset and / or the indication information of at least one effective time period through the second field. After the terminal device receives the third information, it can directly determine at least one power control value of SRS, as well as at least one effective time offset and / or at least one effective time period based on the second field in the third information. The network device can reuse the existing downlink information and use a new field to indicate at least one power control value of SRS, as well as at least one effective time offset and / or at least one effective time period, to avoid compatibility issues.

[0026] It should be understood that the terminal device is predefined or preconfigured with rules (e.g., a table) regarding the second index and at least one power control value of the SRS, as well as at least one effective time offset and / or at least one effective time period, that is, the network device can directly indicate the index of the table (e.g., the first index) or the sequence number in the third information. The terminal device can directly determine at least one power control value of the SRS corresponding to the second index, as well as at least one effective time offset and / or at least one effective time period based on the second index and the predefined table, thereby reducing resource overhead.

[0027] In combination with the first aspect, in some possible implementations, at least one power control value is determined based on an interference combination of a terminal device, where the interference combination is determined by at least one device, and the at least one device includes the terminal device.

[0028] It should be understood that the method provided in the present application can be applicable to the scenario of multi-station collaboration. The terminal device directly obtains at least one different power control value (for example, at least one first value) corresponding to the interference combination of the terminal device in the multi-station collaboration scenario. The at least one first value corresponds to at least one different effective time offset and / or at least one effective time period. The terminal device selects different first values ​​according to different time offsets, calculates the transmission power of the SRS, and can periodically use the corresponding transmission power to send the SRS according to at least one effective time period, further reducing the complexity and resource overhead of the terminal device.

[0029] In a second aspect, a power control method is provided, which may be performed by a network device or a component of the network device (such as a chip or chip system, etc.), and is not limited in this application. The method includes:

[0030] The network device sends indication information of at least one power control value of the sounding reference signal SRS and indication information of at least one time unit set, the at least one time unit set corresponds one-to-one to the at least one power control value, and the at least one time unit set includes a first time unit set; the network device receives the SRS of the terminal device at the time unit in the first time unit set, and the transmission power of the SRS is determined according to the first power control value corresponding to the first time unit set in the at least one time unit.

[0031] According to the method provided in the present application, the network device sends indication information of at least one power control value of the SRS and indication information of at least one time unit set. The terminal device determines, based on the at least one power control value and the at least one time unit set, to use the first power control value to determine the transmit power of the SRS in the time unit in the first time unit set in the at least one time unit set. The terminal device obtains at least one time unit set and at least one power control value corresponding to the at least one time unit set. Among them, the same power control value is used to determine the transmit power of the SRS in the time units included in each time unit set in the at least one time unit set, thereby avoiding the terminal device from frequently obtaining the power control value of a single SRS and calculating the transmit power of a single SRS, further reducing the resource overhead of the terminal device, and improving the channel measurement accuracy of the SRS.

[0032] In combination with the second aspect, in some possible implementation methods, the indication information of at least one time unit set is determined based on the indication information of at least one effective time offset and / or the indication information of at least one effective time period, and the network device sends the indication information of at least one power control value of the sounding reference signal SRS and the indication information of at least one time unit set, including: the network device sends the indication information of at least one power control value of the sounding reference signal SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0033] It should be understood that the network device sends at least one power control value for the SRS, and at least one effective time offset and / or at least one effective time period corresponding to the at least one power control value. The terminal device obtains the at least one power control value, and at least one effective time offset and / or at least one effective time period, and determines the transmit power of the SRS using the corresponding at least one power control value based on the at least one effective time offset and / or at least one effective time period, and sends the SRS to the network device.

[0034] It should also be understood that the at least one time unit set is determined based on the at least one effective time offset and / or at least one effective time period, and the terminal device can directly use the power control value corresponding to the at least one effective time offset and / or at least one effective time period on the time unit corresponding to the at least one effective time offset and / or at least one effective time period to determine the transmit power of the SRS. There is no need for the terminal device to first determine at least one time unit set based on at least one effective time offset and / or at least one effective time period, and then determine the transmit power of the SRS on different time units based on the power control value corresponding to each time unit set in the at least one time unit set.

[0035] In conjunction with the second aspect, in some possible implementations, the network device sends indication information of at least one power control value of the sounding reference signal SRS, as well as indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0036] The network device sends first information and second information to the terminal device, the first information includes indication information of at least one power control value, and the second information includes indication information of at least one effective time offset and / or indication information of at least one effective time period.

[0037] It should be understood that the network device may transmit the indication information of at least one power control value, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period through different information carriers, such as first information and second information. The first information includes the indication information of at least one power control value of the SRS, and the second information includes the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0038] In combination with the second aspect, in some possible implementations, the first information includes a first field, the first field is used to indicate at least one power control value, or the first information includes a first index, and the first index corresponds to at least one power control value.

[0039] It should be understood that the first information can directly indicate at least one power control value of the SRS through the first field. After receiving the first information, the terminal device can directly determine at least one power control value of the SRS based on the first field in the first information. The network device can reuse existing downlink information and use a new first field to indicate at least one power control value of the SRS, thereby avoiding compatibility issues.

[0040] It should be understood that the terminal device is predefined or preconfigured with a rule (e.g., a table) regarding the first index and at least one power control value of the SRS, that is, the network device can directly indicate the index of the table (e.g., the first index) or the sequence number in the first information. The terminal device can directly determine the at least one power control value of the SRS corresponding to the first index based on the first index and the predefined table, thereby reducing resource overhead.

[0041] In conjunction with the second aspect, in some possible implementations, the network device sends indication information of at least one power control value of the sounding reference signal SRS, as well as indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0042] The network device sends third information to the terminal device, where the third information includes indication information of at least one power control value, and indication information of at least one effective time offset and / or indication information of at least one effective time period.

[0043] It should be understood that the network device may transmit the indication information of at least one power control value of the SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period through the same information, such as third information. The third information includes the indication information of at least one power control value of the SRS, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0044] In combination with the second aspect, in some possible implementations, the third information includes a second field, which is used to indicate at least one power control value, and at least one effective time offset and / or at least one effective time period, or the third information includes a second index, which corresponds to at least one power control value, and at least one effective time offset and / or at least one effective time period.

[0045] It should be understood that the third information can directly indicate the indication information of at least one power control value of SRS, as well as the indication information of at least one effective time offset and / or the indication information of at least one effective time period through the second field. After the terminal device receives the third information, it can directly determine at least one power control value of SRS, as well as at least one effective time offset and / or at least one effective time period based on the second field in the third information. The network device can reuse the existing downlink information and, by adding a new second field, indicate at least one power control value of SRS, as well as at least one effective time offset and / or at least one effective time period, thereby avoiding compatibility issues.

[0046] It should be understood that the terminal device is predefined or preconfigured with a rule (e.g., a table) regarding the second index and at least one power control value of the SRS, as well as at least one effective time offset and / or at least one effective time period, that is, the network device can directly indicate the index of the table (e.g., the first index) or the sequence number in the third information. The terminal device can directly determine at least one power control value of the SRS corresponding to the second index, as well as at least one effective time offset and / or at least one effective time period based on the second index and the predefined table, thereby reducing resource overhead.

[0047] In combination with the second aspect, in some possible implementations, before the network device sends indication information of at least one power control value of SRS, and indication information of at least one effective time offset and / or indication information of at least one effective time period, the method also includes: the network device determines at least one power control value based on the interference combination of the terminal device, the interference combination is determined by at least one device, and the at least one device includes the terminal device.

[0048] According to a third aspect, a communication device is provided, the device including: a transceiver unit configured to obtain indication information of at least one power control value of a sounding reference signal (SRS), as well as indication information of at least one effective time offset and / or indication information of at least one effective time period, wherein the at least one effective time offset corresponds to the at least one power control value, and the at least one effective time period corresponds to the at least one power control value;

[0049] a processing unit, configured to determine the transmit power of the SRS according to at least one power control value, and at least one effective time offset and / or at least one effective time period;

[0050] The transceiver unit is further configured to send the SRS to the network device according to the transmission power.

[0051] It should be understood that the transceiver unit can also perform the reception and transmission processing in the aforementioned first aspect; the processing unit is used for other processing except reception and transmission in the aforementioned first aspect.

[0052] In a fourth aspect, a communication device is provided, comprising: a transceiver unit configured to send indication information of at least one power control value of a sounding reference signal (SRS), as well as indication information of at least one effective time offset and / or indication information of at least one effective time period, wherein the at least one effective time offset corresponds to the at least one power control value, and the at least one effective time period corresponds to the at least one power control value;

[0053] The transceiver unit is configured to receive an SRS sent by a terminal device according to a transmit power, where the transmit power is determined based on at least one power control value, and at least one effective time offset and / or at least one effective time period.

[0054] It should be understood that the transceiver unit can also perform the receiving and sending processing in the aforementioned second aspect.

[0055] In one possible implementation, the communication device further includes a processing unit, which is used for other processing in addition to receiving and sending in the aforementioned second aspect.

[0056] In a fifth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and configured to execute instructions in the memory to implement the method of the first aspect and any possible implementation of the first aspect, or to implement the method of the second aspect and any possible implementation of the second aspect.

[0057] Optionally, the communication device also includes a memory.

[0058] Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0059] In one implementation, the communication device is a centralized user configuration function. When the communication device is a centralized user configuration function, the communication interface may be a transceiver, or an input / output interface.

[0060] In another implementation, the communication device is a chip configured in a centralized user configuration function. When the communication device is a chip configured in a centralized user configuration function, the communication interface may be an input / output interface.

[0061] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0062] In a sixth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of the first aspect, or the method in any possible implementation of the second aspect.

[0063] In a specific implementation, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, or various logic circuits. The input signal received by the input circuit may be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter. The input circuit and the output circuit may be the same circuit, which functions as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0064] In a seventh aspect, a processing device is provided, comprising a processor and a memory. The processor is configured to read instructions stored in the memory and receive signals via a receiver or transmit signals via a transmitter to execute the method of any possible implementation of the first aspect, or to execute the method of any possible implementation of the second aspect.

[0065] Optionally, there are one or more processors and one or more memories.

[0066] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0067] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory, which can be integrated with the processor on the same chip or can be set on different chips. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0068] It should be understood that the relevant data interaction process, such as sending configuration information, can be the process of outputting configuration information from the processor, and receiving configuration information can be the process of receiving input configuration information from the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver. The transmitter and receiver can be collectively referred to as a transceiver.

[0069] The processing device in the seventh aspect may be one or more chips. The processor in the processing device may be implemented in hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated into the processor or located independently of the processor.

[0070] In an eighth aspect, a computer program product is provided, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute a method in any possible implementation of the first aspect, or enables a computer to execute a method in any possible implementation of the second aspect.

[0071] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer program runs on a computer, the method in any possible implementation of the first aspect is executed, or the method in any possible implementation of the second aspect is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] FIG1 is a schematic diagram of the architecture of a communication system 100 applicable to the present application.

[0073] FIG2 is a flow chart of a resource indication method for collaborative transmission provided in an embodiment of the present application.

[0074] FIG3 is a schematic diagram of an interference combination of a terminal device provided in an embodiment of the present application.

[0075] FIG4 shows a schematic block diagram of a communication device provided in an embodiment of the present application.

[0076] FIG5 shows a schematic block diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The technical solution in this application will be described below with reference to the accompanying drawings.

[0078] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 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, fifth generation (5G) system, new radio (NR) system, wireless-fidelity (WiFi) system, third generation partnership project (3GPP) related communication system, and other communication systems (such as 6G system) or multiple communication convergence systems that may appear in the future.

[0079] The terminal device in the embodiments of the present application is a device with wireless transceiver capabilities. For example, it may include a handheld device with wireless connection capabilities, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via the radio access network (RAN), exchanging voice and / or data with the RAN. Terminal devices may refer to user equipment (UE), wireless terminal devices, mobile terminal devices, device-to-device (D2D) terminal devices, V2X terminal devices, machine-to-machine / machine-type communications (M2M / MTC) terminal devices, Internet of Things (IoT) terminal devices, subscriber units, subscriber stations, mobile stations, remote stations, access points (AP), remote terminals, access terminals, user terminals, user agents, or user devices. They may also include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, or computer-integrated mobile devices, etc. For example, personal communication service (PCS) phones and other devices. Furthermore, they may also be limited devices, such as devices with low power consumption, limited storage capacity, or limited computing power. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners and other information sensing devices, etc. The terminal device can be fixed or mobile.

[0080] It should be noted that, in this application, a device for implementing a terminal device function can be a terminal device; it can also be a device that supports the terminal device in implementing the function, such as a chip system, which can be installed in the terminal device. In this application, a chip system can be composed of a chip or include a chip and other discrete devices.

[0081] The network device in the embodiment of the present application is an access device that the terminal device accesses to the mobile communication system in a wireless manner, including a wireless access network device, such as a base station. The network device may also refer to a device that communicates with the terminal device at the air interface. The network device may include an evolutionary base station (evolutionary Node B) in a long term evolution (LTE) system or an advanced long term evolution (LTE-A), which may be referred to as eNB or e-NodeB. An eNB is a device deployed in a wireless access network that meets the fourth generation mobile communication technology (4G) standard to provide wireless communication functions for terminal devices. The network device may also be a new radio controller (NR controller), a base station (gNode B, gNB) in a 5G system, a centralized unit, a new wireless base station, a radio remote module, a micro base station (also known as a small station), a relay, a distributed unit, various forms of macro base stations, a transmission reception point (TRP), a reception point (RP), a transmission measurement function (TMF) or a transmission point (TP) or any other wireless access device, but the embodiments of the present application are not limited thereto. The network device may also include a home base station (e.g., a home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (Wifi) access point (AP). The embodiments of the present application do not limit the specific technology and specific device form used by the network device. The network device may correspond to an eNB in ​​a 4G system and to a gNB in ​​a 5G system.

[0082] Among them, the base station in the embodiment of the present application may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs can be centrally controlled by one CU. CU and DU can be divided according to the protocol layer functions of the wireless network they possess, for example, the PDCP layer and above protocol layer functions are set in the CU, and the protocol layers below the PDCP, such as the radio link control (RLC) layer and the media access control (MAC) layer, are set in the DU. It should be noted that this division of the protocol layer is only an example, and it can also be divided in other protocol layers. The radio frequency device can be remote and not placed in the DU, or it can be integrated in the DU, or partly remote and partly integrated in the DU. The embodiment of the present application does not impose any restrictions. In addition, in some embodiments, the control plane (CP) and user plane (UP) of the CU can be separated and divided into different entities for implementation, namely the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the UE can be sent to the CU through the DU. The DU can directly encapsulate the signaling through the protocol layer and transparently transmit it to the UE or CU without parsing the signaling. In this network architecture, the CU is divided into a network device on the radio access network (RAN) side. In addition, the CU can also be divided into a network device on the core network (CN) side. This application does not limit this.

[0083] In the embodiments of the present application, the terminal device is wirelessly connected to the radio access network device, and the radio access network device is wirelessly or wiredly connected to the core network device. The core network device and the radio access network device can be independent and distinct physical devices, or the core network device's functions and the radio access network device's logical functions can be integrated into the same physical device, or a single physical device can integrate some of the core network device's functions and some of the radio access network device's functions. The terminal device can be stationary or mobile.

[0084] To facilitate understanding of the embodiments of the present application, the communication system shown in FIG1 is first used as an example to describe in detail a communication system applicable to the method provided in the embodiments of the present application.

[0085] Figure 1 shows a schematic diagram of the architecture of a communication system 100 applicable to an embodiment of the present application. As shown in Figure 1, the communication system 100 may include at least one terminal device, such as terminal devices 101 to 102 shown in Figure 1, and the communication system 100 may also include at least two network devices, such as network device 103 and network device 104 shown in Figure 1. In the communication system 100, network device 103 and network device 104 can cooperate with each other to provide services for terminal device 101. Therefore, terminal device 101 can communicate with network device 103 and network device 104 respectively via a wireless link. It should be noted that Figure 1 is only exemplary. In an actual communication system, there may also be three or more network devices that cooperate with each other to provide services for terminal devices 101 and 102.

[0086] Wherein, assuming that the distance between the terminal device 101 and the network device 103 is relatively close, and the distance between the terminal device 101 and the network device 104 is relatively far, the network device 103 is usually regarded as the main network device (or called the main station) of the terminal device 101, and the network device 104 is regarded as the collaborative network device (or called the collaborative station, auxiliary station) of the terminal device 101. Among them, the network device 104 needs to obtain the channel information corresponding to the terminal device 101 through the SRS. The terminal device 101 sends SRS#1 to the network device 104. At this time, the terminal device 102 sends SRS#2 to the network device 104. The communication link between the terminal device 101 and the network device 104 has strong interference with the communication link between the terminal device 102 and the network device 104, which seriously affects the SINR of the SRS#1 sent by the terminal device, reduces the channel measurement accuracy of the network device to the terminal device, and reduces the system transmission performance.

[0087] Currently, controlling the SRS transmit power of terminal devices to reduce SRS channel measurement interference and improve channel measurement accuracy is an effective technical approach. Technical methods for SRS power control include a combination of open-loop power control (FPC) with partial path loss compensation and a fast closed-loop power control approach.

[0088] Among them, open-loop power control is usually configured or adjusted by radio resource controller (RRC) high-level signaling and is only related to the power parameters or path loss estimation configured by the RRC high-level. Path loss can be estimated using the downlink synchronization signal and physical broadcast channel block (SSB) or channel state information reference signal (CSI-RS). For connected terminal devices, UE-specific CSI-RS is usually configured for path loss estimation. For terminal devices without UE-specific CSI-RS or for uplink transmission related to common channels, SSB can be used for path loss estimation.

[0089] Among them, closed-loop power control is power control related to historical transmission power. The network device calculates the transmit power control (TPC) value (or TPC command value) of the terminal device based on the power control configuration parameters, feedback information from the terminal device, and measurement information of the network device, and sends the TPC value to the terminal device through downlink control information (DCI), as shown in Table 1:

[0090] Table 1

[0091] As shown in Table 1 above, the terminal device determines the transmission power of SRS based on the power adjustment amount (for example: -1dB) obtained by TPC mapping, and its own maximum transmission power, path loss, number of RBs and transmission format, etc., and sends SRS to the network device according to the transmission power.

[0092] As can be seen, the aforementioned closed-loop power control method primarily addresses the real-time TPC indication of the SRS pilot. In a multi-station coordinated scenario (as shown in Figure 1), controlling the SRS transmit power to ensure SRS channel measurement accuracy while reducing resource overhead is a hot topic in this field.

[0093] Based on the technical problems existing in the above-mentioned prior art, the present application provides a power control method, which can control the transmission power of SRS sent by terminal devices with lower resource overhead in a multi-station collaborative scenario, improve the SRS channel measurement accuracy, and enhance multi-station collaborative transmission.

[0094] FIG2 is a flow chart of a power control method provided in an embodiment of the present application.

[0095] 201. The terminal device obtains indication information of at least one power control value of the SRS and indication information of at least one time unit set.

[0096] The indication information of the at least one power control value can be used to compensate for channel variations caused by rapid fading. The at least one time unit set corresponds to the at least one power control value in a one-to-one manner. Each time unit set in the at least one time unit set corresponds to a power control value.

[0097] For example, the at least one time unit set includes: time unit set #1 and time unit set #2. Time unit set #1 includes the following time units: time unit #1-1, time unit #1-2, and time unit #31-3; time unit set #2 includes the following time units: time unit #2-1, time unit #2-2, and time unit #2-3. The power control value corresponding to time unit set #1 is AdB, and the power control value corresponding to time unit set #2 is BdB. That is, the power control values ​​corresponding to time units #1-1, #1-2, and #1-3 are all AdB, and the power control values ​​corresponding to time units #2-1, #2-2, and #2-3 are all BdB.

[0098] It should be understood that in one possible implementation, the terminal device sends SRS with the same transmission power on time unit #1-1, time unit #1-2 and time unit #1-3; the terminal device sends SRS with the same transmission power on time unit #2-1, time unit #2-2 and time unit #2-3.

[0099] It should also be understood that the time intervals between time unit #1-1, time unit #1-2 and time unit #1-3 may be the same; the time intervals between time unit #2-1, time unit #2-2 and time unit #2-3 may be the same.

[0100] Optionally, the indication information of the at least one time unit set is determined based on the indication information of at least one effective time offset and / or the indication information of at least one effective time period.

[0101] It should be understood that in step 201, the terminal device obtains indication information of at least one power control value of SRS and indication information of at least one time unit set, including: the terminal device obtains indication information of at least one power control value of SRS, and indication information of at least one effective time offset and / or indication information of at least one effective time period.

[0102] The at least one effective time offset corresponds to at least one power control value, and the at least one effective time period corresponds to at least one power control value.

[0103] It should be understood that the at least one power control value is used by the terminal device to adjust the transmit power of the SRS. Based on the obtained at least one power control value, as well as at least one effective time offset and / or at least one effective time period, the terminal device selects a corresponding power control value in a corresponding time unit set to adjust the transmit power of the SRS. For example, selecting a first power control value in a first time unit set determines the transmit power of the SRS transmitted by the terminal device in a time unit in the first time unit set.

[0104] It should also be understood that the effective time offset (or effective time) and the effective time period (or effective period) in this application can be indicated by time units. For example, the time unit can be a time slot, a minislot, a subframe, a transmission time interval, etc., which is not limited in this application.

[0105] Optionally, the at least one power control value is determined based on an interference combination of the terminal device, where the interference combination is determined by at least one device, including the terminal device, wherein each device in the interference combination of the terminal device can send an SRS to the same network device.

[0106] As an example, assume that there are four terminal devices in the communication system: UE1, UE2, UE3, and UE4. The periods for UE1, UE2, UE3, and UE4 to send SRS are 10 time units, 20 time units, 40 time units, and 80 time units, respectively. When UE1, UE2, UE3, and UE4 perform SRS measurements, the interference combinations at different times are shown in Figure 3. There are four interference combinations for UE1, UE2, UE3, and UE4: {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, and {UE1, UE2, UE3}, and the change period of these four interference combinations is 80 time units. Among them, there are 4 interference combinations for UE1: {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, {UE1, UE2, UE3}, and the 4 interference combinations correspond to 4 power control values; there are 3 interference combinations for UE2: {UE1, UE2, UE3, UE4}, {UE1, UE2}, {UE1, UE2, UE3}, and the 3 interference combinations correspond to 3 power control values; there are 2 interference combinations for UE3: {UE1, UE2, UE3, UE4}, {UE1, UE2, UE3}, and the 2 interference combinations correspond to 2 power control values; there is 1 interference combination for UE4: {UE1, UE2, UE3, UE4}, and the 1 interference combination corresponds to 1 power control value.

[0107] Assuming that the terminal device is UE1, the SRS power control value obtained by UE1 may include four power control values ​​corresponding to {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, and {UE1, UE2, UE3}, and the effective time offsets and / or effective time periods corresponding to the four power control values. For example, the four power control values ​​corresponding to {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, and {UE1, UE2, UE3} are TPC#1, TPC#2, TPC#3, and TPC#4, respectively. As shown in Figure 3, the effective time offset of TPC#1 is 0, and the effective time period is 80 time units; the effective time offset of TPC#2 is 10 time units, and the effective time period is 20 time units; the effective time offset of TPC#3 is 20 time units, and the effective time period is 40 time units; the effective time offset of TPC#4 is 40 time units, and the effective time period is 80 time units.

[0108] At least one power control value corresponds to at least one effective time offset, that is, one power control value may correspond to one effective time offset. Assuming that one power control value corresponds to one effective time offset, the effective time offset may be understood as the offset between the time unit in which the terminal device obtains the indication information of the power control value and the time unit in which the power control value takes effect. For example, the effective time offset of TPC#1 is 0 time units, that is, the terminal device obtains the indication information of the power control value in the first time unit, and uses the TPC#1 to determine the transmission power of the SRS in the second time unit, and the time interval between the first time unit and the second time unit is 0 time units; the effective time offset of TPC#2 is 10 time units, that is, the terminal device obtains the indication information of the power control value in the first time unit, and uses the TPC#2 to determine the transmission power of the SRS in the second time unit, and the time interval between the first time unit and the second time unit is 10 time units; the effective time offset of TPC#3 is 40 time units, that is, the terminal device obtains the indication information of the power control value in the first time unit, and uses the TPC#3 to determine the transmission power of the SRS in the second time unit, and the time interval between the first time unit and the second time unit is 40 time units; the effective time offset of TPC#4 is 80 time units, that is, the terminal device obtains the indication information of the power control value in the first time unit, and uses the TPC#4 to determine the transmission power of the SRS in the second time unit, and the time interval between the first time unit and the second time unit is 80 time units.

[0109] It should be understood that the terminal device may obtain at least one power control value, and at least one effective time offset and / or at least one effective time period in the following ways:

[0110] Method 1

[0111] A terminal device receives first information and second information from a network device, where the first information includes indication information of at least one power control value, and the second information includes indication information of at least one effective time offset and / or indication information of at least one effective time period. The terminal device obtains the indication information of the at least one power control value, the indication information of the at least one effective time offset, and / or the indication information of the at least one effective time period based on the first information and the second information.

[0112] In a possible implementation, the first information includes a first field, and the first field is used to indicate at least one power control value.

[0113] As an example, the first information includes a first field, and the specific value corresponding to the first field can be used to represent the value of at least one power control value. In the embodiment of the present application, taking one of the at least one power control values ​​indicated by the first field as an example, the representation of the one power control value in the first field is described in detail. When the first field is used to indicate multiple power control values, the representation of the one power control value is similar to that in the following example, and is not listed one by one in this application.

[0114] For example, assuming that the three bits in the first field are used to indicate a power control value, the specific values ​​of the highest bit and the lowest bit of the three bits can be used to indicate whether the power control value is positive or negative, and the other bits in the first field are used to indicate the magnitude of the power control value. Assume that the highest bit of the three bits in the first field is used to indicate the sign of the power control value, and the other bits are used to indicate the magnitude of the power control value. When the highest bit is "0", the power control value is positive; when the highest bit is "1", the power control value is negative. For example, if the three bits in the first field are 010, the power control value corresponding to 010 is +2dB; if the three bits in the first field are 001, the power control value corresponding to 001 is +1dB; if the three bits in the first field are 110, the power control value corresponding to 110 is -2dB; and if the three bits in the first field are 101, the power control value corresponding to 101 is -1dB. When the most significant bit of the three bits in the first field is "1," the power control value is a positive value; when the most significant bit of the three bits in the first field is "0," the power control value is a negative value. For example, if the three bits in the first field are 110, the power control value corresponding to 110 is +2dB; if the three bits in the first field are 001, the power control value corresponding to 001 is -1dB.

[0115] In a possible implementation manner, the first information includes a first index, where the first index corresponds to at least one power control value.

[0116] As an example, the first information includes a first index, where the first index corresponds to at least one power control value. The terminal device may be predefined / preconfigured by the system, or the network device may indicate, via indication information, a corresponding rule / law / method for the at least one power control value. For a specific example, see the detailed description in step 202.

[0117] It should be understood that the terminal device receives the first information and the second information from the network device, wherein the network device can send the first information and the second information to the terminal device at the same time, or the network device can send the first information and the second information to the terminal device one after another, which is not limited in this application.

[0118] It should also be understood that the first information may be downlink information sent by the network device to the terminal device, such as downlink control information DCI, that is, the DCI sent by the network device to the terminal device includes indication information of at least one power control value of the SRS. Optionally, the DCI may add an indication field (such as a first field), and the first field is used to indicate the at least one power control value; or the DCI may include a first index, and the first index corresponds to the at least one power control value. The specific position of the first field in the DCI is not limited in this application.

[0119] It should also be understood that the second information may be high-level signaling sent by the network device to the terminal device, such as radio resource control (RRC) signaling, that is, the network device sends an RRC to the terminal device, and the RRC includes indication information of at least one effective time offset and / or indication information of at least one effective time period corresponding to at least one power control value of the SRS.

[0120] Optionally, an indication field may be added to the RRC to indicate at least one effective time offset and / or at least one effective time period corresponding to at least one power control value. The specific implementation manner in which the RRC indicates at least one effective time offset and / or at least one effective time period corresponding to at least one power control value by adding an indication field is similar to the manner in which the first information adds an indication field to indicate at least one power control value. For details, see the detailed description of the example related to the first information in step 202.

[0121] Method 2

[0122] The terminal device receives third information from the network device, where the third information includes indication information of at least one power control value, and indication information of at least one effective time offset and / or indication information of at least one effective time period. The terminal device obtains the indication information of the at least one power control value, and the indication information of the at least one effective time offset and / or indication information of at least one effective time period based on the third information.

[0123] In one possible implementation, the third information includes a second field, and the second field is used to indicate at least one power control value, and at least one effective time offset and / or at least one effective time period. In the embodiment of the present application, taking one power control value among the at least one power control values ​​indicated by the second field, and the effective time offset corresponding to the one power control value and / or the effective time period corresponding to the one power control value as an example, the representation of the one power control value in the second field is described in detail. When the second field is used to indicate multiple power control values, multiple effective time offsets and / or multiple effective time periods, the representation is similar to that of a power control value in the following example, and this application will not list them one by one.

[0124] As an example, the third information includes a second field, and the eight bits in the second field are used to indicate the power control value, and the effective time offset corresponding to the power control value and the effective time period corresponding to the power control value. Assume that the two most significant bits of the eight bits are used to indicate the value of the power control value, and the other bits in the eight bits can be used to indicate the effective time offset and / or effective time period corresponding to the power control value.

[0125] Suppose that the 8 bits in the second field are 10001100, where the first two bits "10" of the 8 bits are used to indicate the power control value, and "001" of the last six bits "001100" can be used to indicate the effective time offset, "100" can be used to indicate the effective time period, the power control value corresponding to "10" is 2dB, "001" can be used to indicate that the effective time offset is 1 time block, each time block includes 10 time units, and "100" can be used to indicate that the effective time period is 4 time blocks, that is, the effective time period is 40 time units.

[0126] Assume that the 6 bits in the second field are 10010, then the first two bits "10" of the 6 bits are used to indicate the power control value, "010" is used to indicate the effective time offset, the power control value corresponding to "10" is 2dB, and "010" can be used to indicate that the effective time offset is 2 time blocks, that is, the effective time offset is 20 time units. The 6 bits do not indicate the effective time period. Among them, the effective time period corresponding to the power control value can be indicated by other indication information, or predefined / preconfigured for the terminal device, which is not specifically limited in this application.

[0127] It should be understood that the second field may also include a bit for indicating whether the power control value is a positive value or a negative value, similar to the first field introduced in the above method 1 including a bit for indicating whether the power control value is a positive value or a negative value. For details, please refer to the example in the above method 1.

[0128] In a possible implementation, the third information includes a second index, where the second index corresponds to at least one power control value, and at least one effective time offset and / or at least one effective time period.

[0129] As an example, the third information includes a second index, where the second index corresponds to at least one power control value, at least one effective time offset, and / or at least one effective time period. The terminal device may be predefined / preconfigured by the system, or the network device may indicate, via indication information, a corresponding rule / rule / method regarding the at least one power control value, at least one effective time offset, and / or at least one effective time period. For specific examples, please refer to the detailed description in step 202.

[0130] It should be understood that the third information may be downlink information sent by the network device to the terminal device, such as downlink control information DCI, that is, the DCI sent by the network device to the terminal device includes indication information of at least one power control value of the SRS. Optionally, the DCI may add an indication field (such as a second field), and the second field is used to indicate the at least one power control value, as well as at least one effective time offset and / or at least one effective time period. The specific position of the second field in the DCI is not limited in this application; or, the DCI reuses an existing field (such as PDSCH dynamic rate matching indication information) to indicate at least one power control value, as well as at least one effective time offset and / or at least one effective time period; or the DCI includes a second index, and the second index corresponds to at least one power control value, as well as at least one effective time offset and / or at least one effective time period. Among them, the DCI indicates at least one power control value, as well as at least one effective time offset and / or at least one effective time period by means of field indication or by means of an index, which can greatly reduce the complexity of the signaling indication and reduce resource overhead.

[0131] 202. The terminal device determines the transmission power of the SRS according to a first power control value corresponding to a first time unit set in at least one time unit set.

[0132] It should be understood that the at least one time unit set corresponds to the at least one power control value. Assuming that the first time unit set in the at least one time unit set corresponds to the first power control value in the at least one power control value, that is, in the time unit in the first time unit set, the terminal device uses the first power control value to determine the transmit power of the SRS.

[0133] It should also be understood that the at least one time unit set can be determined based on at least one effective time offset and / or at least one effective time period, that is, the terminal device selects a first power control value on a time unit in the first time unit set determined based on the at least one power control value and the at least one effective time offset and / or the at least one effective time period to determine the transmission power of the SRS.

[0134] It should also be understood that after the terminal device obtains the indication information of at least one power control value of the SRS, as well as the indication information of at least one effective time offset and / or the indication information of at least one effective time period, it selects the corresponding power control value (for example, the first power control value) on the corresponding time unit (for example, a time unit belonging to the first time unit set, referred to as the first time unit for short) according to the at least one power control value of the SRS, as well as the at least one effective time offset and / or the at least one effective time period to adjust the transmission power of the SRS.

[0135] Regarding the two different ways in which the above-mentioned terminal device obtains at least one power control value, at least one effective time offset and / or at least one effective time period, the following will exemplarily introduce, in combination with Way 1 and Way 2, how the terminal device obtains at least one power control value, at least one effective time offset and / or at least one effective time period, and then selects a corresponding power control value (for example, a first power control value) on a corresponding time unit (for example, a first time unit) to adjust the transmit power of the SRS based on at least one power control value of the SRS, at least one effective time offset and / or at least one effective time period.

[0136] For method 1:

[0137] The indication information of at least one power control value, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period are respectively carried in different information (for example, the first information and the second information). The terminal device determines at least one power control value and at least one effective time offset and / or effective time period corresponding to at least one power control value based on the first information and the second information received from the network device. The terminal device selects the corresponding power control value to determine the transmission power of the SRS based on the at least one effective time offset and / or the at least one effective time period.

[0138] As an example, the first information includes a first field, and a specific value corresponding to the first field can be used to represent the value of the at least one power control value. For a specific example, please refer to the detailed description in FIG2 above.

[0139] It should be understood that when the first information indicates at least one power control value in the form of a first field, the terminal device may also be predefined, or other indication information may indicate that the first field corresponds to at least one effective time offset of at least one power control value. If there is no other indication, the terminal device may default the effective time offset to 0 time units, that is, after the terminal device obtains the power control value, it immediately uses the power control value to adjust the transmit power of the SRS.

[0140] As another example, the first information includes a first index, and the first index corresponds to at least one power control value. The terminal device may be predefined / preconfigured by the system, or the network device may indicate the corresponding relationship of the at least one power control value through indication information.

[0141] Assume that the power control value is a TPC value, and the terminal device is predefined with the corresponding relationship of the TPC values ​​shown in Table 2:

[0142] Table 2

[0143] As shown in Table 2 above, the first column: TPC Command Field as the first index, the second column: Accumulated δ SRS [dB] is the TPC cumulative value, the third column: Absolute δ SRS [dB] is the absolute value of TPC. The terminal device determines the specific row in Table 2 based on the first index in the first information, and further selects the TPC cumulative value or the TPC absolute value as the power control value for determining the SRS transmit power based on the instruction of the network device or a predefined rule.

[0144] Assume that the first index in the first information takes a value of 0, that is, the terminal device determines at least one power control value from the first row in Table 2 based on the first index being 0, and determines the transmit power of the SRS based on the at least one power control value. The interference combination corresponding to the terminal device includes two power control values, such as the TPC cumulative value corresponding to 2 TPCs: "-1,1", and the TPC absolute value corresponding to 2 TPCs: "-4,1". Assume that the terminal device selects the TPC cumulative value "-1,1" as the power control value to calculate the transmit power of the SRS according to a predefined rule, and the terminal device selects the power control value corresponding to "-1,1" to calculate the transmit power of the SRS based on the effective time offset and effective time period corresponding to "-1,1" indicated by the second information. For example, the effective time offset corresponding to "-1" in the TPC cumulative value "-1,1" indicated in the second information is 1 time unit, and the effective time period is 30 time units, and the effective time offset corresponding to "1" is 10 time units, and the effective time period is 40 time units. The terminal device receives the first information, and determines to use "-1,1" as the power control value to determine the transmission power of the SRS based on the first index in the first information. The terminal device receives the first information on time unit #1, and uses "-1" as the power control value to determine the transmission power of the SRS on time unit #2, and the interval between time unit #1 and time unit #2 is 3 time units. The terminal device uses "-1" to determine the transmission power of the SRS for a period of 30 time units. The terminal device uses "1" as the power control value to determine the transmission power of the SRS on time unit #3, and the interval between time unit #3 and time unit #1 is 2 time units. The terminal device uses "1" to determine the transmission power of the SRS for a period of 40 time units.

[0145] It should be understood that when the terminal device determines the transmit power of the SRS according to at least one effective time offset and / or at least one effective time period using the corresponding power control value in at least one power control value, the terminal device can determine the transmit power of the SRS this time based on the transmit power value of the SRS on the previous time unit of the time unit of at least one effective time offset and / or at least one effective time period and the power control value corresponding to the effective time offset and / or effective time period. Alternatively, the terminal device can determine the transmit power of the SRS this time based on the transmit power of the SRS determined according to the previous effective time period and the power control value corresponding to the effective time period.

[0146] As an example, assume that the terminal device determines the transmit power to be a dB in time unit #1, where a is a positive number. The terminal device obtains at least one power control value (e.g., -1), at least one effective time offset (e.g., 2 time units), and at least one effective time period (e.g., 20 time units) in time unit #2, where time unit #2 is after time unit #1. The terminal device determines the transmit power of the SRS to be a-1 dB in time unit #3, where the time offset between time unit #3 and time unit #2 is 2 time units. The terminal device determines the transmit power of the SRS to be a-1-1 dB in time unit #4, where the time offset between time unit #4 and time unit #2 is 20 time units.

[0147] As another example, assume that the terminal device determines the transmit power to be a dB in time unit #1, where a is a positive number. The terminal device obtains at least one power control value (e.g., -1, 2), at least one effective time offset (e.g., 2 time units, 4 time units), and at least one effective time period (e.g., 20 time units) in time unit #2, and time unit #2 is after time unit #1. The terminal device determines the transmit power of the SRS to be a-1dB in time unit #3, where the time offset between time unit #3 and time unit #2 is 2 time units. The terminal device determines the transmit power of the SRS to be a-1+2dB in time unit #4, where the time offset between time unit #4 and time unit #1 is 4 time units. The terminal device determines the transmit power of the SRS to be a-1+2-1dB in time unit #5, where the time offset between time unit #5 and time unit #3 is 20 time units. The SRS transmission power determined by the terminal device in time unit #6 is a-1+2-1+2dB, and the time offset between time unit #6 and time unit #4 is 20 time units.

[0148] It should also be understood that in TDD mode, the value of the at least one effective time offset should not be 0 time unit; in FDD mode, the value of the at least one effective time offset can be 0 time unit.

[0149] For method 2:

[0150] The indication information of at least one power control value, and the indication information of at least one effective time offset and / or the indication information of at least one effective time period can be carried in the same information (for example, third information). The terminal device determines at least one power control value and at least one effective time offset corresponding to at least one power control value and / or at least one effective time period corresponding to at least one power control value based on the third information received from the network device. The terminal device selects the corresponding power control value to determine the transmission power of the SRS based on the at least one effective time offset and / or at least one effective time period.

[0151] As an example, the third information includes a second field, and the value corresponding to the second field can be used to represent the value of at least one power control value, and at least one effective time offset and / or at least one effective time period. For a specific example, please refer to the detailed description in Figure 2 above.

[0152] As another example, the third information includes a second index, where the second index corresponds to at least one power control value, and at least one effective time offset and / or at least one effective time period. The terminal device may be predefined / preconfigured by the system, or the network device may indicate the correspondence between the at least one power control value, and the at least one effective time offset and / or at least one effective time period through indication information.

[0153] For example, the terminal device is predefined with respect to a correspondence between at least one power control value, at least one effective time offset, and at least one effective time period. In the case where the at least one power control value includes a power control value, the at least one effective time offset includes an effective time offset, and the at least one effective time period includes an effective time period, the power control value takes a TPC value as an example, as shown in Table 3:

[0154] Table 3

[0155] As shown in Table 3 above, the first column: TPC Command Field as the second index, the second column: Accumulated δ SRS [dB] is the TPC cumulative value, the third column: Absolute δ SRS [dB] is the absolute TPC value, and the fourth column, Time Period, is the effective time period. The terminal device determines the specific row in Table 3 based on the second index in the third information, and further selects the cumulative TPC value or the absolute TPC value as the power control value for determining the SRS transmit power based on instructions from the network device or predefined rules.

[0156] It should be understood that, as shown in Table 3, the TPC cumulative value and TPC absolute value corresponding to each index in Table 3 are both 1 value, that is, Table 3 is used to indicate the power control value and effective time period of a single SRS. The terminal device obtains a power control value and an effective time period based on the third information. After the terminal device obtains the power control value on time unit #1, it uses the power control value to calculate the transmit power of the SRS on time unit #2. The effective time offset corresponding to the power control value can be predefined or preconfigured by the system. In FDD mode, the time offset between time unit #1 and time unit #2 can be 0 time units. In TDD mode, the time offset between time unit #1 and time unit #2 is a number that is not 0. Furthermore, the terminal device periodically transmits the SRS using the transmit power of the SRS determined according to the power control value on time unit #2 according to the value of the effective time period corresponding to the power control value in Table 3.

[0157] Assume that the second index in the third information takes a value of 2, and the terminal device selects one from the TPC cumulative value of "3" and the TPC absolute value of "4" in the third row of Table 3 as a power control value to determine the transmission power of the SRS based on the value of the second index 2, wherein the effective time period corresponding to the TPC cumulative value of "3" and the TPC absolute value of "4" is 10 time units. The terminal device receives the third information, and based on the second index in the third information, the predefined effective time offset and the corresponding relationship in Table 3, determines to use the power control value (for example, the TPC cumulative value of "3") to determine the transmission power of the SRS in the corresponding time unit according to the effective time offset, and at the same time, periodically uses the transmission power of the SRS determined according to the TPC cumulative value of "3" at the effective time offset according to the effective time period "10 time units" to transmit the SRS.

[0158] Assume again that the second index in the third information takes a value of 6, and the terminal device selects one from the cumulative value TPC of "1" and the TPC absolute value of "1" in the 7th row of Table 3 based on the value of the second index 6 as a power control value to determine the transmission power of the SRS, wherein the effective time period corresponding to the TPC cumulative value of "1" and the TPC absolute value of "1" is 20 time units. The terminal device receives the third information and, based on the second index in the third information, the predefined effective time offset and the corresponding relationship in Table 3, determines to use the power control value (e.g., TPC absolute value "1") to determine the transmission power of the SRS in the time unit corresponding to the effective time offset, and at the same time, periodically transmits the SRS according to the effective time period "20 time units" by using the transmission power of the SRS determined based on the TPC cumulative value "1" at the effective time offset.

[0159] For example, the terminal device is predefined with respect to a correspondence between at least one power control value, at least one effective time offset, and at least one effective time period. In the case where the at least one power control value includes a power control value, the at least one effective time offset includes an effective time offset, and the at least one effective time period includes an effective time period, the power control value takes a TPC value as an example, as shown in Table 4:

[0160] Table 4

[0161] As shown in Table 4 above, the first column: TPC Command Field as the second index, the second column: Accumulated δ SRS [dB] is the TPC cumulative value, the third column: Absolute δ SRS [dB] is the absolute TPC value, the fourth column: Time Offset is the effective time offset, and the fifth column: Time Period is the effective time period. The terminal device determines the specific row in Table 4 based on the second index in the third information, and further selects the TPC cumulative value or the TPC absolute value as the power control value for determining the SRS transmit power based on the instruction of the network device or a predefined rule.

[0162] It should be understood that, as shown in Table 4, the TPC cumulative value and TPC absolute value corresponding to each index in Table 4 are both 1 value, that is, Table 4 is used to indicate the power control value, effective time offset, and effective time period of a single SRS. The terminal device obtains a power control value, an effective time offset, and an effective time period based on the third information. The terminal device calculates the transmit power of the SRS using the power control value based on the effective time offset corresponding to the TPC value, and periodically transmits the SRS at the corresponding transmit power according to the effective time period.

[0163] Assume that the second index in the third information takes the value of 0, and the terminal device selects one from the TPC cumulative value of "-1" and the TPC absolute value of "-4" in the first row of Table 4 as a power control value to determine the transmission power of the SRS based on the value of the second index of 0. The effective time offset corresponding to the TPC cumulative value of "-1" and the TPC absolute value of "-4" is 0 time units, and the effective time period is 10 time units. The terminal device receives the third information on time unit #1, and uses the power control value (for example, the TPC cumulative value of "-1") to determine the transmission power of the SRS on time unit #2, wherein the interval between time unit #1 and time unit #2 is 0 time units. The terminal device periodically uses the transmission power of the SRS calculated based on the TPC cumulative value "-1" on time unit #2 according to the effective time period of "10 time units" to send the SRS.

[0164] Assume again that the second index value in the third information is 7, and the terminal device selects one from the TPC cumulative value of "3" and the TPC absolute value of "4" in the 8th row of Table 4 as a power control value to determine the transmission power of the SRS based on the value of the second index 7, wherein the effective time offset corresponding to the TPC cumulative value of "3" and the TPC absolute value of "4" is 50 time units, and the effective time period is 80 time units. The terminal device receives the third information on time unit #1, and uses the power control value (for example, TPC absolute value "1") to determine the transmission power of the SRS on time unit #2, wherein the interval between time unit #1 and time unit #2 is 50 time units. The terminal device periodically uses the transmission power of the SRS calculated based on the TPC cumulative value "1" on time unit #2 to transmit the SRS according to the effective time period "20 time units".

[0165] For example, the terminal device is predefined with respect to at least one power control value, and the correspondence between at least one effective time offset and at least one effective time period. In the case where the at least one power control value includes multiple power control values, the at least one effective time offset includes multiple effective time offsets, and the at least one effective time period includes multiple effective time periods, the power control value takes a TPC value as an example, as shown in Table 5:

[0166] Table 5

[0167] As shown in Table 5 above, the first column: TPC Command Field as the second index, the second column: Accumulated δ SRS [dB] is the TPC cumulative value, the third column: Absolute δ SRS [dB] represents the absolute TPC value, the fourth column (Time Offset) represents the effective time offset, and the fifth column (Time Period) represents the effective time period. The terminal device determines the specific row in Table 6 based on the specific value of the second index in the third information, and further selects the accumulated TPC value or the absolute TPC value as the power control value for determining the SRS transmit power based on instructions from the network device or predefined rules.

[0168] It should be understood that, as shown in Table 5, the TPC cumulative value and the TPC absolute value corresponding to each index in Table 5 are multiple values, that is, Table 5 is used to indicate multiple power control values, multiple effective time offsets, and multiple effective time periods of the SRS. The terminal device obtains multiple power control values, multiple effective time offsets, and multiple effective time periods based on the third information. The terminal device periodically transmits the SRS according to each effective time period using the SRS transmit power determined according to each power control value at each effective time offset based on the multiple effective time offsets and multiple effective time periods corresponding to the multiple power control values.

[0169] Assume that the second index in the third information is 2. Based on the second index value 2, the terminal device selects a TPC from the TPC cumulative value "1,3" and the TPC absolute value "1,4" in the third row of Table 5 as the power control value to determine the SRS transmit power. The TPC cumulative value "1" in "1,3" takes effect with a time offset of 10 time units, and the TPC absolute value "3" takes effect with a time offset of 20 time units; the TPC absolute value "1,4" takes effect with a time offset of 10 time units, and the TPC absolute value "4" takes effect with a time offset of 20 time units. The terminal device is predefined to use the TPC cumulative value as the power control value to determine the SRS transmit power. The terminal device receives the third information from the network device in time unit #1. Based on the second index in the third information and Table 5, the terminal device determines to use the TPC cumulative value "-1" as the power control value to determine the SRS transmit power in time unit #2. The time interval between time unit #1 and time unit #2 is 10 time units. Based on the second index in the third information and Table 5, the terminal device determines to use the TPC cumulative value "3" as the power control value to determine the SRS transmit power in time unit #3. The interval between time unit #1 and time unit #3 is 20 time units. The terminal device uses the TPC cumulative value "1,3" as the power adjustment value to determine the transmit power period of 80 time units.

[0170] For example, the terminal device is predefined with respect to at least one power control value, and the correspondence between at least one effective time offset and at least one effective time period. When the at least one power control value includes multiple power control values, the at least one effective time offset includes multiple effective time offsets, and the at least one effective time period includes multiple effective time periods, the power control value takes the TPC value as an example, as shown in Table 6:

[0171] Table 6

[0172] As shown in Table 6 above, the first column: TPC Command Field as the second index, the second column: Accumulated δ SRS [dB] is the TPC cumulative value, the third column: Absolute δ SRS [dB] represents the absolute TPC value, the fourth column (Time Offset) represents the effective time offset, and the fifth column (Time Period) represents the effective time period. The terminal device determines the specific row in Table 6 based on the specific value of the second index in the third information, and further selects the accumulated TPC value or the absolute TPC value as the power control value for determining the SRS transmit power based on instructions from the network device or predefined rules.

[0173] It should be understood that, as shown in Table 6, the TPC cumulative value and the TPC absolute value corresponding to each index in Table 6 both have 8 values, that is, Table 6 is used to indicate each TPC value within a time period (e.g., 80 time units), as well as the effective time offset and effective time period corresponding to each TPC value. The terminal device obtains multiple power control values, multiple effective time offsets, and multiple effective time periods based on the third information. The terminal device periodically transmits the SRS according to the multiple effective time offsets and multiple effective time periods corresponding to the multiple power control values, using the SRS transmit power determined according to the corresponding power control value at each effective time offset according to the multiple effective time periods.

[0174] Assume that the second index in the third information is 1. Based on the second index value 1, the terminal device selects a TPC from the TPC cumulative values ​​of "-1, 1, 2, -1, 3, -3, -2, 0" and the TPC absolute values ​​of "-4, 1, 3, -3, 5, -5, -2, 1" in the second row of Table 6 as the power control value to determine the SRS transmit power. Among them, among the TPC cumulative values ​​of "-1, 1, 2, -1, 3, -3, -2, 0", the effective time offset of "-1" is 0, the effective time offset of "1" is 10 time units, the effective time offset of "2" is 20, the effective time offset of "-1" is 30 time units, the effective time offset of "3" is 40, the effective time offset of "-3" is 50 time units, the effective time offset of "-2" is 60 time units, and the effective time offset of "1" is 70 time units. In the TPC absolute value "-4,1,3,-3,5,-5,-2,1", the effective time offset of "-4" is 0 time units, the effective time offset of "1" is 10 time units, the effective time offset of "3" is 20 time units, the effective time offset of "-3" is 30 time units, the effective time offset of "5" is 40 time units, the effective time offset of "-5" is 50 time units, the effective time offset of "-2" is 60 time units, and the effective time offset of "1" is 70 time units.

[0175] Assume that the terminal device is predefined to use the TPC cumulative value as the power control value to determine the transmission power of the SRS. The terminal device receives the third information from the network device at time unit #1. The terminal device determines, based on the second index in the third information and Table 6, to use the TPC cumulative value "-1" as the power control value to determine the transmission power of the SRS at time unit #2. The time interval between time unit #1 and time unit #2 is 0 time units. The terminal device determines, based on the second index in the third information and Table 6, to use the TPC cumulative value "1" as the power control value to determine the transmission power of the SRS at time unit #3. The time interval between time unit #1 and time unit #3 is 10 time units, and so on.

[0176] It should be understood that the third information may be downlink information sent by the network device to the terminal device, such as downlink control information DCI, that is, the DCI sent by the network device to the terminal device includes indication information of the power control value of the SRS. Optionally, the DCI may add an indication field (such as a second field), and the second field is used to indicate the multiple power control values, as well as multiple effective time offsets and / or multiple effective time periods. The specific position of the second field in the DCI is not limited in this application; or, the DCI reuses an existing field (such as PDSCH dynamic rate matching indication information) to indicate multiple power control values, as well as multiple effective time offsets and / or multiple effective time periods; or the DCI includes a second index, and the second index corresponds to multiple power control values, as well as multiple effective time offsets and / or multiple effective time periods. Among them, the DCI indicates multiple power control values, as well as multiple effective time offsets and / or multiple effective time periods by means of field indication or by means of index, which can greatly reduce the complexity of signaling indication and reduce resource overhead.

[0177] 203. The terminal device sends an SRS according to the transmission power at a time unit in the first time unit set.

[0178] Specifically, the terminal device obtains at least one power control value and at least one time unit set of the SRS, and determines the transmit power of the SRS based on a first power control value corresponding to a first time unit set in the at least one time unit set. The terminal device then transmits the SRS to the network device based on the determined SRS transmit power in the time units in the first time unit set.

[0179] For example, at least one time unit set is determined based on at least one effective time offset and / or at least one effective time period. The terminal device determines a first power control value based on the correspondence between the at least one effective time offset and / or at least one effective time period and at least one power control value. The first power control value corresponds to the first time unit set, and the first time unit set is determined based on the at least one effective time offset and / or at least one effective time period. The terminal device determines the transmit power of the SRS based on the first power control value, and the terminal device uses the transmit power to send the SRS to the network device on the time unit in the first time unit set determined by the at least one effective time offset and / or at least one effective time period.

[0180] According to the method shown in FIG2 above, in a multi-station collaborative scenario, the SRS signal of the terminal device will be interfered with by the signals of other terminal devices, resulting in a decrease in the transmission performance of the SRS of the terminal device. Through the method provided in the present application, the terminal device obtains at least one power control value and at least one time unit set of the SRS by utilizing the periodic change of the SRS interference of the terminal device. The terminal device selects the corresponding power control value on the corresponding time unit set based on the at least one power control value and the at least one time unit set to determine the transmission power of the SRS, thereby solving the signaling overhead of the power control value of the SRS in the multi-station collaborative scenario, improving the measurement accuracy of the SRS, and improving the transmission performance.

[0181] Figures 4 and 5 are schematic diagrams of the structures of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device can be the terminal device 101 or terminal device 102 as shown in Figure 1, or the network device 103 or network device 104 as shown in Figure 1, or a module (such as a chip) applied to the terminal device or network device.

[0182] As shown in Figure 4 , the communication device 400 includes a processing unit 410 and a transceiver unit 420. The communication device 400 is used to implement the functions of the terminal device or network device in the method embodiment shown in Figure 4 above.

[0183] When the communication device 400 is used to implement the functions of the terminal device in the method embodiment shown in FIG2 :

[0184] The transceiver unit 420 is configured to receive indication information of at least one power control value of a sounding reference signal (SRS) and indication information of at least one time unit set, wherein the at least one time unit set corresponds to the at least one power control value in a one-to-one manner;

[0185] The processing unit 410 is used to determine the transmission power of the SRS on the first time unit set based on the first power control value corresponding to the first time unit set in at least one time unit set; the transceiver unit 420 is also used to send the SRS to the network device based on the transmission power on the first time unit in the first time unit set.

[0186] The transceiver unit 420 may perform the receiving and sending processes in FIG. 2 ;

[0187] In a possible implementation, the communication device 400 further includes a processing unit 410 , which can perform other processing in addition to receiving and sending in FIG. 4 .

[0188] When the communication device 400 is used to implement the functions of the network device in the method embodiment shown in FIG4 :

[0189] The transceiver unit 420 sends, to the terminal device, indication information of at least one power control value of a sounding reference signal (SRS) and indication information of at least one time unit set, where the at least one time unit set corresponds one-to-one with the at least one power control value, and the at least one time unit set includes a first time unit set;

[0190] The transceiver unit 420 is also used to receive an SRS from a terminal device at a time unit in the first time unit set. The transmission power of the SRS is determined based on a first power control value corresponding to the first time unit set, and at least one power control value includes the first power control value.

[0191] The transceiver unit 420 may perform the receiving and sending processes in FIG. 2 ;

[0192] In a possible implementation, the communication device 400 further includes a processing unit 410 , which can perform other processing in addition to receiving and sending in FIG. 4 .

[0193] As shown in Figure 5, the communication device 510 includes a processor 510 and an interface circuit 520. The processor 510 and the interface circuit 520 are coupled to each other. It is understood that the interface circuit 520 can be a transceiver or an input / output interface. Optionally, the communication device 510 may also include a memory 530 for storing instructions executed by the processor 510, storing input data required by the processor 510 to execute instructions, or storing data generated after the processor 510 executes instructions.

[0194] When the communication device 510 is used to implement the method shown in FIG. 4 , the processor 510 is used to implement the functions of the processing unit 410 , and the interface circuit 520 is used to implement the functions of the transceiver unit 420 .

[0195] When the communication device is a chip used in a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from other modules in the terminal (such as a radio frequency module or antenna), and the information is sent by the base station to the terminal; or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or antenna), and the information is sent by the terminal to the base station.

[0196] When the above-mentioned communication device is a module applied to a base station, the base station module implements the functions of the base station in the above-mentioned method embodiment. The base station module receives information from other modules in the base station (such as a radio frequency module or an antenna), and the information is sent by the terminal to the base station; or the base station module sends information to other modules in the base station (such as a radio frequency module or an antenna), and the information is sent by the base station to the terminal. The base station module here can be the baseband chip of the base station, or it can be a DU or other module. The DU here can be a DU under the open radio access network (O-RAN) architecture.

[0197] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0198] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: computer program code, when the computer program code is run on a computer, it enables the computer to execute the method of the terminal device in the aforementioned method embodiment.

[0199] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: computer program code, when the computer program code is run on a computer, it enables the computer to execute the method of the first network device in the aforementioned method embodiment.

[0200] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: computer program code, which, when running on a computer, enables the computer to execute the method of the second network device in the aforementioned method embodiment.

[0201] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores program code. When the program code runs on a computer, the computer executes the method of the terminal device in the aforementioned method embodiment.

[0202] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores program code. When the program code runs on a computer, the computer executes the method of the first network device in the aforementioned method embodiment.

[0203] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores program code. When the program code runs on a computer, the computer executes the method of the second network device in the aforementioned method embodiment.

[0204] An embodiment of the present application further provides a processing device, including a processor and an interface; the processor is used to execute the method for data scheduling of collaborative transmission in any of the above method embodiments.

[0205] An embodiment of the present application also provides a system for data scheduling of collaborative transmission, which includes the first network device, the second network device and a terminal device in the above embodiment.

[0206] As used in this specification, the terms "component," "module," "system," and the like are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component on a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0207] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0208] Those skilled 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 beyond the scope of this application.

[0209] Those skilled in the art will 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.

[0210] It should be understood that "at least one" in the embodiments of the present application refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b and c can represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Wherein a, b and c can be single or multiple, respectively.

[0211] In the 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 schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0212] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0213] 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.

[0214] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0215] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A power control method, applied to a first communication device, characterized in that: include: Acquire indication information of at least one power control value of a sounding reference signal SRS and indication information of at least one time unit set, where the at least one time unit set corresponds one-to-one to the at least one power control value; Determining, according to a first power control value corresponding to a first time unit set in the at least one time unit set, a transmit power of the SRS on the first time unit set; The SRS is sent to a network device according to the transmit power at a time unit in the first time unit set.

2. The method according to claim 1, characterized in that: The indication information of the at least one time unit set is determined according to the indication information of at least one effective time offset and / or the indication information of at least one effective time period, The acquiring indication information of at least one power control value of the SRS and indication information of at least one time unit includes: Acquire indication information of the at least one power control value of the SRS, as well as indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

3. The method according to claim 2, characterized in that The obtaining of the indication information of the at least one power control value of the SRS, and the indication information of the at least one effective time offset and / or the indication information of the at least one effective time period includes: First information and second information are received, wherein the first information includes indication information of the at least one power control value, and the second information includes indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

4. The method according to claim 3, characterized in that The first information includes a first field, the first field is used to indicate the at least one power control value, or, The first information includes a first index corresponding to the at least one power control value.

5. The method according to claim 2, characterized in that: The obtaining of indication information of at least one power control value of the SRS, and indication information of at least one effective time offset and / or indication information of at least one effective time period includes: Receive third information, the third information including indication information of the at least one power control value, and indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

6. The method according to claim 5, characterized in that The third information includes a second field, wherein the second field is used to indicate the at least one power control value, and the at least one effective time offset and / or the at least one effective time period, or, The third information includes a second index corresponding to the at least one power control value, and the at least one effective time offset and / or the at least one effective time period.

7. The method according to any one of claims 1 to 6, characterized in that The at least one power control value is determined based on an interference combination of the first communication device, the interference combination being determined by at least one apparatus, the at least one apparatus comprising the first communication device.

8. A power control method, applied to a second communication device, characterized in that: include: Sending indication information of at least one power control value of a sounding reference signal SRS and indication information of at least one time unit set to a terminal device, where the at least one time unit set corresponds one-to-one to the at least one power control value, and the at least one time unit set includes a first time unit set; The SRS is received from the terminal device at a time unit in the first time unit set, wherein the transmission power of the SRS is determined according to a first power control value corresponding to the first time unit set, and the at least one power control value includes the first power control value.

9. The method according to claim 8, characterized in that The indication information of the at least one time unit set is determined according to the indication information of the at least one effective time offset and / or the indication information of the at least one effective time period, The sending of at least one power control value indication information of the SRS and at least one time unit indication information includes: Send indication information of the at least one power control value of the SRS, as well as indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

10. The method according to claim 9, characterized in that The sending of the at least one power control value of the SRS, and the at least one indication information of the effective time offset and / or the at least one indication information of the effective time period include: Sending first information and second information to the terminal device, the first information including indication information of the at least one power control value, and the second information including indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

11. The method according to claim 10, characterized in that The first information includes a first field, the first field is used to indicate the at least one power control value, or, The first information includes a first index corresponding to the at least one power control value.

12. The method according to claim 10, characterized in that The sending of at least one power control value of a sounding reference signal SRS, and at least one indication information of an effective time offset and / or at least one indication information of an effective time period, includes: Sending third information to the terminal device, the third information including indication information of the at least one power control value, and indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

13. The method according to claim 12, characterized in that The third information includes a second field, wherein the second field is used to indicate the at least one power control value, and the at least one effective time offset and / or the at least one effective time period, or, The third information includes a second index corresponding to the at least one power control value, and the at least one effective time offset and / or the at least one effective time period.

14. The method according to any one of claims 8 to 13, characterized in that Before sending the indication information of the at least one power control value of the SRS and the indication information of at least one time unit, the method further includes: The at least one power control value is determined according to an interference combination of the terminal device, the interference combination being determined by at least one device, the at least one device comprising the terminal device.

15. A communication device, characterized in that: include: The transceiver unit is configured to obtain indication information of at least one power control value of a sounding reference signal SRS and indication information of at least one time unit set, wherein the at least one time unit set corresponds to the at least one power control value in a one-to-one manner; The processing unit is configured to determine the transmit power of the SRS on the first time unit set according to a first power control value corresponding to the first time unit set in the at least one time unit set; The transceiver unit is further configured to send the SRS to a network device according to the transmit power at a time unit in the first time unit set.

16. The device according to claim 15, characterized in that The indication information of the at least one time unit set is determined according to the indication information of at least one effective time offset and / or the indication information of at least one effective time period, The transceiver unit is used to obtain indication information of at least one power control value of the SRS and indication information of at least one time unit, including: The transceiver unit is used to obtain indication information of the at least one power control value of the SRS, as well as indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

17. The device according to claim 16, characterized in that The transceiver unit is used to obtain the indication information of the at least one power control value of the SRS, and the indication information of the at least one effective time offset and / or the indication information of at least one effective time period, including: The transceiver unit is used to receive first information and second information, the first information includes indication information of the at least one power control value, and the second information includes indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

18. The device according to claim 17, characterized in that The first information includes a first field, the first field is used to indicate the at least one power control value, or, The first information includes a first index corresponding to the at least one power control value.

19. The device according to claim 16, characterized in that The transceiver unit is used to obtain indication information of at least one power control value of the SRS, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including: The transceiver unit is used to receive third information, where the third information includes indication information of the at least one power control value, and indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

20. The device according to claim 19, characterized in that The third information includes a second field, wherein the second field is used to indicate the at least one power control value, and the at least one effective time offset and / or the at least one effective time period, or, The third information includes a second index corresponding to the at least one power control value, and the at least one effective time offset and / or the at least one effective time period.

21. The device according to any one of claims 15 to 20, characterized in that The at least one power control value is determined based on an interference combination of the communication device, the interference combination being determined by at least one apparatus, the at least one apparatus comprising the communication device.

22. A communication device, characterized in that: include: a transceiver unit, configured to send indication information of at least one power control value of a sounding reference signal SRS and indication information of at least one time unit set to a terminal device, wherein the at least one time unit set corresponds one-to-one to the at least one power control value, and the at least one time unit set includes a first time unit set; The transceiver unit is also used to receive the SRS from the terminal device at a time unit in the first time unit set, and the transmission power of the SRS is determined based on a first power control value corresponding to the first time unit set, and the at least one power control value includes the first power control value.

23. The device according to claim 22, characterized in that The indication information of the at least one time unit set is determined according to the indication information of the at least one effective time offset and / or the indication information of the at least one effective time period, The transceiver unit is used to send indication information of at least one power control value of the SRS and indication information of at least one time unit, including: The transceiver unit is used to send indication information of the at least one power control value of the SRS, as well as indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

24. The device according to claim 23, characterized in that The transceiver unit is used to send the indication information of the at least one power control value of the SRS, and the indication information of the at least one effective time offset and / or the indication information of the at least one effective time period, including: The transceiver unit is used to send first information and second information to the terminal device, the first information includes indication information of the at least one power control value, and the second information includes indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

25. The device according to claim 24, characterized in that The first information includes a first field, the first field is used to indicate the at least one power control value, or, The first information includes a first index corresponding to the at least one power control value.

26. The device according to claim 24, characterized in that The transceiver unit is used to send indication information of at least one power control value of a sounding reference signal SRS, as well as indication information of at least one effective time offset and / or indication information of at least one effective time period, including: The transceiver unit is used to send third information to the terminal device, and the third information includes indication information of the at least one power control value, and indication information of the at least one effective time offset and / or indication information of the at least one effective time period.

27. The device according to claim 26, characterized in that The third information includes a second field, wherein the second field is used to indicate the at least one power control value, and the at least one effective time offset and / or the at least one effective time period, or, The third information includes a second index corresponding to the at least one power control value, and the at least one effective time offset and / or the at least one effective time period.

28. The device according to any one of claims 22 to 27, characterized in that Before the transceiver unit sends the indication information of the at least one power control value and the indication information of at least one time unit of the SRS, A processing unit is used to determine the at least one power control value according to the interference combination of the terminal device, wherein the interference combination is determined by at least one device, and the at least one device includes the terminal device.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 7, or the method according to any one of claims 8 to 14.

30. A computer program product, characterized in that The computer program product comprises a computer program or instructions for executing the method according to any one of claims 1 to 7 , or a computer program or instructions for executing the method according to any one of claims 8 to 14 .

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