Power control method and communication device

Abstract

Provided is a power control method, comprising: a terminal device acquiring 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 being in one-to-one correspondence with the at least one power control value; the terminal equipment determines the sending power of the SRS on a 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; and the terminal equipment sends the SRS to the network equipment on the time unit in the first time unit according to the sending power. In a multi-station cooperation scene, a terminal device obtains at least one power control value and at least one time unit set, and determines the sending power of the SRS on a first time unit set in the at least one time unit set by using the corresponding power control value, so that the resource overhead of frequently obtaining the power control values by the terminal device can be reduced, and the sending power of the SRS can be improved. And the transmission performance in a multi-station cooperation scene is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a power control method and a communication device. Background Art

[0002] In a mobile communication system, network equipment obtains uplink channel state information, mainly by receiving a sounding reference signal (SRS) sent by a 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 terminal devices in a cell are orthogonally staggered through orthogonal dimensions such as orthogonal frequency division multiplexing (OFDM) symbols in the time domain, comb structures in the frequency domain, and cyclic shifts in the code domain to ensure that there is no interference between the SRSs of different terminal devices. 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.

[0003] In non-cooperative scenarios, the SRS measurement of network devices will be weakly interfered by the measurement of adjacent network devices. In multi-station cooperative scenarios, the SRS measurement of network devices will be strongly interfered by other communication links, resulting in a decrease in the signal to interference plus noise ratio (SINR) of the SRS, a decrease in channel measurement accuracy, and a decrease in system transmission performance.

[0004] Therefore, in the scenario of multi-station coordination, improving channel measurement accuracy by controlling the SRS transmission power is a current research hotspot. Summary of the invention

[0005] The present application provides a power control method and a communication device, which can reduce the signaling overhead of a network device indicating a power control value of an SRS in a multi-station collaboration scenario and improve the channel measurement accuracy of the SRS.

[0006] In a first aspect, a power control method is provided, which may be performed by a terminal device or by a component of the terminal device (such as a chip or a chip system, etc.), and is not limited in this application. The method includes:

[0007] 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.

[0008] It should be understood that the power control value in the present 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 (TPC command). The at least one power control value in the present 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.

[0009] 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.

[0010] According to the method provided by the present application, the terminal device obtains at least one power control value and at least one time unit set of the SRS. The terminal device uses the power control value in the time unit in the time unit set corresponding to the power control value according to the power control value in the at least one power control value to determine the transmission power of the SRS. This method can avoid the terminal device frequently obtaining the power control value of a single SRS to calculate the transmission power of the SRS, further reduce the complexity and resource overhead of the terminal device, and improve the channel measurement accuracy of the SRS.

[0011] 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.

[0012] It should be understood that the at least one time unit set is determined according to 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 according to the at least one effective time period and the at least one effective time offset, and determines the transmit power of the SRS according to the power control value corresponding to the at least one time unit set.

[0013] In combination 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:

[0014] 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.

[0015] It should be understood that 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 effective time offset and / or the indication information of at least one effective time period can be carried by different information, such as the first information and the 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.

[0016] 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.

[0017] 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 determine at least one power control value of the SRS according to the first field in the first information. The network device can reuse the existing downlink information and use a new field to indicate at least one power control value of the SRS to avoid compatibility issues.

[0018] 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 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.

[0019] In combination 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:

[0020] 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.

[0021] It should be understood that 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 effective time offset and / or the indication information of at least one effective time period can be carried by the same information, such as the 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.

[0022] In combination with the first aspect, in some possible implementations, the third information includes a second field, 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, or the third information includes a second index, and 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.

[0023] 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 receiving the third information, the terminal device 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 according to 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.

[0024] 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.

[0025] 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, the interference combination is determined by at least one device, and the at least one device includes the terminal device.

[0026] 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 transmit power of the SRS, and can periodically use the corresponding transmit power to send the SRS according to at least one effective time period, thereby further reducing the complexity and resource overhead of the terminal device.

[0027] In a second aspect, a power control method is provided, which may be performed by a network device or a component of a network device (such as a chip or a chip system, etc.), and is not limited in this application. The method includes:

[0028] The network device sends 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, 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 a 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.

[0029] 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 a first power control value to determine the transmit power of the SRS in a time unit in a first time unit set in 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 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.

[0030] 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 detection 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 detection 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.

[0031] It should be understood that the network device sends at least one power control value of 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 at least one power control value, and at least one effective time offset and / or at least one effective time period, and determines to use the corresponding at least one power control value to determine the transmission power of the SRS according to the at least one effective time offset and / or at least one effective time period, and sends the SRS to the network device.

[0032] 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 determine the transmit power of the SRS on the time unit corresponding to the at least one effective time offset and / or at least one effective time period using the power control value corresponding to the at least one effective time offset and / or at least one effective time period. 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.

[0033] 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, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0034] 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.

[0035] It should be understood that the network device may send the indication information of at least one power control value, 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.

[0036] 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.

[0037] 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 according to the first field in the first information. The network device can reuse the existing downlink information and use the newly added first field to indicate at least one power control value of the SRS, thereby avoiding compatibility issues.

[0038] 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 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.

[0039] 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, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including:

[0040] 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.

[0041] It should be understood that the network device may send the indication information of at least one power control value of the SRS, 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 the third information. The third information includes the indication information of at least one power control value of the SRS, the indication information of at least one effective time offset, and / or the indication information of at least one effective time period.

[0042] In combination with the second aspect, in some possible implementations, the third information includes a second field, 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, or the third information includes a second index, and 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.

[0043] 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 receiving the third information, the terminal device 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 according to the second field in the third information. The network device can reuse the existing downlink information and add a second 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, thereby avoiding compatibility issues.

[0044] 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.

[0045] 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, as well as 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 an 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.

[0046] In a third aspect, a communication device is provided, the device comprising: a transceiver unit, 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 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;

[0047] 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;

[0048] The transceiver unit is further used to send the SRS to the network device according to the transmission power.

[0049] 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.

[0050] In a fourth aspect, a communication device is provided, the device comprising: 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 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;

[0051] The transceiver unit is used to receive the SRS sent by the terminal device according to the transmission power, where the transmission power is determined according to at least one power control value, and at least one effective time offset and / or at least one effective time period.

[0052] It should be understood that the transceiver unit can also perform the receiving and sending processing in the aforementioned second aspect.

[0053] In a possible implementation, the communication device further includes a processing unit, which is used for other processing except receiving and sending in the aforementioned second aspect.

[0054] In a fifth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in the first aspect and any possible implementation of the first aspect, or to implement the method in the second aspect and any possible implementation of the second aspect.

[0055] Optionally, the communication device also includes a memory.

[0056] Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0057] 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.

[0058] 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.

[0059] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0060] In a sixth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used 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 processor executes the method in any possible implementation of the second aspect.

[0061] In the specific implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.

[0062] In a seventh aspect, a processing device is provided, comprising a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the method in any possible implementation of the first aspect, or to execute the method in any possible implementation of the second aspect.

[0063] Optionally, the processor is one or more and the memory is one or more.

[0064] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0065] 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 respectively. The embodiment of the present application does not limit the type of memory and the setting method of the memory and the processor.

[0066] It should be understood that the relevant data interaction process, such as sending configuration information, can be a process of outputting configuration information from the processor, and receiving configuration information can be a process of receiving input configuration information by the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the receiver. Among them, the transmitter and the receiver can be collectively referred to as a transceiver.

[0067] The processing device in the seventh aspect may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor or located outside the processor and exist independently.

[0068] In an eighth aspect, a computer program product is provided, comprising: a computer program (also referred to as code, or instruction), 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.

[0069] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instruction). 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

[0070] Figure 1 It is a schematic diagram of the architecture of a communication system 100 applicable to the present application.

[0071] Figure 2It is a process diagram of a collaborative transmission resource indication method provided in an embodiment of the present application.

[0072] Figure 3 It is a schematic diagram of an interference combination of a terminal device provided in an embodiment of the present application.

[0073] Figure 4 A schematic block diagram of a communication device provided in an embodiment of the present application is shown.

[0074] Figure 5 A schematic block diagram of another communication device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0075] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0076] 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 fusion systems that may appear in the future.

[0077] The terminal device in the embodiment of the present application is a device with wireless transceiver function. For example, it may include a handheld device with wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via the radio access network RAN ​​and exchange voice and / or data with the RAN. The terminal device may refer to user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent or user equipment, etc., and may also include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, computer-built-in mobile devices, etc. For example, personal communication service (PCS) phones and other devices. In addition, it can also be a restricted device, such as a device with low power consumption, or a device with limited storage capacity, or a device with limited computing power, etc. For example, it includes 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.

[0078] It should be noted that, in the present application, the device for implementing the function of the terminal device may be the terminal device; or it may be a device that can support the terminal device to implement the function, such as a chip system, which may be installed in the terminal device. In the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0079] The network device in the embodiment of the present application is an access device for the terminal device to access the mobile communication system wirelessly, 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 (evolutional 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 for short). An eNB is a device deployed in a wireless access network that meets the fourth generation (4G) standard and provides 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 frequency remote module, a micro base station (also called 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, and the embodiments of the present application are not limited thereto. The network device may also include a home base station (e.g., home evolved NodeB, or home Node B, HNB), a base band 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.

[0080] 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 the protocol layer functions above 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 pulled away and not placed in the DU, or it can be integrated in the DU, or part of it can be pulled away and part of it can be 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 the user plane (UP) of the CU can also 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. DU can directly encapsulate the signaling through the protocol layer and transparently transmit it to UE or CU without parsing the signaling. In this network architecture, CU is divided into a network device on the radio access network (RAN) side. In addition, CU can also be divided as a network device on the core network (CN) side, and this application does not limit this.

[0081] The terminal device in the embodiment of the present application is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network device by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or the functions of part of the core network device and part of the wireless access network device can be integrated on one physical device. The terminal device can be stationary or movable.

[0082] To facilitate understanding of the embodiments of the present application, first Figure 1 The communication system shown is used as an example to describe in detail a communication system applicable to the method provided in the embodiment of the present application.

[0083] Figure 1 FIG. 1 is a schematic diagram showing an architecture of a communication system 100 applicable to an embodiment of the present application. Figure 1 As shown, the communication system 100 may include at least one terminal device, such as Figure 1 The terminal devices 101-102 shown in FIG. 1 , the communication system 100 may also include at least two network devices, such as Figure 1 The network device 103 and the network device 104 shown in FIG. In the communication system 100, the network device 103 and the network device 104 can cooperate with each other to provide services for the terminal device 101. Therefore, the terminal device 101 can communicate with the network device 103 and the network device 104 respectively through a wireless link. It should be noted that Figure 1 This is only exemplary. In an actual communication system, three or more network devices may cooperate with each other to provide services for the terminal devices 101 and 102 .

[0084] It is assumed that the terminal device 101 is close to the network device 103, and the terminal device 101 is far from the network device 104. 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 cooperative network device (or called the cooperative station, auxiliary station) of the terminal device 101. 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 a 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.

[0085] At present, it is an effective technical means to improve the channel measurement accuracy by controlling the transmission power of the SRS sent by the terminal device to reduce the SRS channel measurement interference. Among them, the technical methods for SRS power control include: a technical solution combining open-loop power control (fractional power control, FPC) with partial path loss compensation, and a technical solution based on fast closed-loop power control.

[0086] Among them, open-loop power control is usually configured or adjusted by high-level signaling of the radio resource controller (RRC), and is only related to the power parameters or path loss estimation configured by the RRC high-level. Path loss can be estimated through the downlink synchronization signal and physical broadcast channel block (SSB) or channel state information reference signal (CSI-RS). For terminal devices in connected state, UE-specific CSI-RS is usually equipped for path loss estimation; for terminal devices that are not configured with UE-specific CSI-RS or uplink transmission related to common channels, SSB can be used for path loss estimation.

[0087] Among them, closed-loop power control is power control related to historical transmission power. The network device calculates the transmission power control (TPC) value (or TPC command value) of the terminal device based on the power control configuration parameters, the feedback information of the terminal device, and the 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:

[0088] Table 1

[0089]

[0090] As shown in Table 1 above, the terminal device determines the transmit power of SRS based on the power adjustment amount (for example: -1dB) obtained by TPC mapping, its own maximum transmit power, path loss, number of RBs and transmission format, etc., and sends SRS to the network device based on the transmit power.

[0091] It can be seen that the above closed-loop power control method mainly deals with the real-time TPC indication of the SRS pilot. Figure 1 As shown in FIG. 1 , how to control the transmission power of SRS to ensure the SRS channel measurement accuracy while reducing resource overhead is a hot research topic in this field.

[0092] 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.

[0093] Figure 2 It is a flowchart of a power control method provided in an embodiment of the present application.

[0094] 201. A terminal device obtains indication information of at least one power control value of an SRS and indication information of at least one time unit set.

[0095] The indication information of the at least one power control value can be used to compensate for channel changes caused by fast fading. The at least one time unit set corresponds to the at least one power control value one by one. Each time unit set in the at least one time unit set corresponds to a power control value.

[0096] For example, the at least one time unit set includes: time unit set #1 and time unit set #2, the time units in the time unit set #1 include: time unit #1-1, time unit #1-2, time unit 31-3; the time units in the time unit set #2 include: time unit #2-1, time unit #2-2, time unit #2-3. The power control value corresponding to the time unit set #1 is AdB, and the power control value corresponding to the time unit set #2 is BdB, that is, the power control values ​​corresponding to the time unit #1-1, time unit #1-2 and time unit #1-3 are all AdB, and the power control values ​​corresponding to the time unit #2-1, time unit #2-2 and time unit #2-3 are all BdB.

[0097] It should be understood that in one possible implementation, the terminal device sends SRS with the same transmission power in time unit #1-1, time unit #1-2 and time unit #1-3; the terminal device sends SRS with the same transmission power in time unit #2-1, time unit #2-2 and time unit #2-3.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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. The terminal device selects a corresponding power control value on a corresponding time unit set to adjust the transmit power of the SRS based on the at least one power control value obtained, and at least one effective time offset and / or at least one effective time period. For example, selecting a first power control value on a first time unit set determines the transmit power of the SRS sent by the terminal device on a time unit in the first time unit set.

[0103] 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 a time unit. 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.

[0104] Optionally, the at least one power control value is determined according to an 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. Each device in the interference combination of the terminal device can send an SRS to the same network device.

[0105] As an example, assume that there are four terminal devices in the communication system: UE1, UE2, UE3 and UE4. The periods of SRS transmission corresponding to UE1, UE2, UE3 and UE4 are 10 time units, 20 time units, 40 time units and 80 time units respectively. When UE1, UE2, UE3 and UE4 perform SRS measurement, the interference combinations at different times are as follows: Figure 3As shown, there are four interference combinations for UE1, UE2, UE3 and UE4: {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, {UE1, UE2, UE3}, and the variation period of the 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.

[0106] Among them, assuming that the terminal device is UE1, the power control value of the SRS obtained by UE1 may include 4 power control values ​​corresponding to {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, {UE1, UE2, UE3}, and the effective time offset and / or effective time period corresponding to the 4 power control values. For example, the 4 power control values ​​corresponding to {UE1, UE2, UE3, UE4}, {UE1}, {UE1, UE2}, {UE1, UE2, UE3} are TPC#1, TPC#2, TPC#3 and TPC#4 respectively. According to Figure 3 As shown, 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.

[0107] Among them, at least one power control value corresponds to at least one effective time offset, that is, one power control value can correspond to one effective time offset. Assuming that one power control value corresponds to one effective time offset, the effective time offset can be understood as: the offset between the time unit when the terminal device obtains the indication information of the power control value and the time unit when 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.

[0108] 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:

[0109] Method 1

[0110] The terminal device receives first information and second information from the network device, wherein 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 indication information of at least one power control value, indication information of at least one effective time offset and / or indication information of at least one effective time period based on the first information and the second information.

[0111] In a possible implementation manner, the first information includes a first field, and the first field is used to indicate at least one power control value.

[0112] 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 power control value of at least one power control value indicated by the first field as an example, the expression 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, it is similar to the expression of one power control value in the following example, and the present application will not list them one by one.

[0113] For example, assuming that the 3 bits in the first field are used to indicate a power control value, the specific value of the highest bit / lowest bit in the 3 bits can be used to indicate that the power control value is positive or negative, and the other bits in the first field are used to indicate the size of the power control value. Assuming that the highest bit in the 3 bits in the first field is used to indicate the positive or negative of the power control value, and the other bits are used to indicate the size of the power control value. When the highest bit is "0", the power control value is positive, and when the highest bit is "1", the power control value is negative. For example, if the 3 bits in the first field are 010, the power control value corresponding to 010 is +2dB; if the 3 bits in the first field are 001, the power control value corresponding to 001 is +1dB; if the 3 bits in the first field are 110, the power control value corresponding to 110 is -2dB; if the 3 bits in the first field are 101, the power control value corresponding to 101 is -1dB. When the highest bit of the three bits in the first field is "1", the power control value is a positive value, and when the highest 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.

[0114] In a possible implementation manner, the first information includes a first index, and the first index corresponds to at least one power control value.

[0115] As an 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 a corresponding rule / law / method for at least one power control value through indication information. For a specific example, please refer to the detailed description in step 202.

[0116] 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 simultaneously, or the network device can send the first information and the second information to the terminal device successively, which is not limited in this application.

[0117] 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.

[0118] 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 at least one effective time period corresponding to at least one power control value of the SRS.

[0119] Optionally, an indication field may be added in 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 method of the RRC indicating 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 method of indicating at least one power control value by adding an indication field to the first information mentioned above. For details, please refer to the detailed description of the example related to the first information in step 202.

[0120] Method 2

[0121] The terminal device receives third information from the network device, the third information including 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 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 according to the third information.

[0122] 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. Among them, in the embodiment of the present application, taking one power control value among the at least one power control value 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 expression form 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, it is similar to the expression form of one power control value in the following example, and the present application will not list them one by one.

[0123] As an example, the third information includes a second field, and 8 bits in the second field are used to indicate the one power control value, and the effective time offset corresponding to the one power control value and the effective time period corresponding to the one power control value. Assume that the two most significant bits of the 8 bits are used to indicate the value of the one power control value, and the other bits of the 8 bits can be used to indicate the effective time offset and / or effective time period corresponding to the power control value.

[0124] Suppose, the 8 bits in the second field are 10001100, among which, 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.

[0125] 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, and 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, and 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 to the terminal device, which is not specifically limited in this application.

[0126] 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.

[0127] In a possible implementation manner, 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.

[0128] As an example, the third information includes a second index, and 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 indicates the corresponding rules / laws / methods related to at least one power control value, and at least one effective time offset and / or at least one effective time period through indication information. For specific examples, please refer to the detailed description in step 202.

[0129] 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, and 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, and 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, and 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, and at least one effective time offset and / or at least one effective time period by means of field indication or by means of index, which can greatly reduce the complexity of signaling indication and reduce resource overhead.

[0130] 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.

[0131] It should be understood that the at least one time unit set corresponds to the at least one power control value. Assume 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 transmission power of the SRS.

[0132] 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 transmit power of the SRS.

[0133] It should also be understood that after the terminal device obtains the indication information of at least one power control value of the SRS, 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 (e.g., the first power control value) on the corresponding time unit (e.g., a time unit belonging to a first time unit set, referred to as the first time unit for short) to adjust the transmit power of the SRS based on the at least one power control value of the SRS, the at least one effective time offset and / or the at least one effective time period.

[0134] With respect to the two different methods for the terminal device to obtain 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 method 1 and method 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 (e.g., a first power control value) on a corresponding time unit (e.g., 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.

[0135] For method 1:

[0136] 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 at least one effective time period corresponding to the 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.

[0137] 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, see the above Figure 2 Detailed introduction in.

[0138] 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.

[0139] 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 indicates the corresponding relationship of at least one power control value through indication information.

[0140] Assume that the power control value is a TPC value, and the terminal device is predefined with the corresponding relationship of the TPC value shown in Table 2:

[0141] Table 2

[0142]

[0143]

[0144] As shown in Table 2 above, the first column: TPC Command Field as the first index, the second column: Accumulatedδ sRs [dB] is the TPC cumulative value, the third column: Absoluteδ sRS [dB] is the absolute value of TPC. The terminal device determines the specific row in Table 2 according to 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 transmission power according to the instruction of the network device or the predefined rule.

[0145] Assume that the first index in the first information is 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 transmission power of the SRS based on the at least one power control value. Among them, 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 transmission power of the SRS according to a predefined rule, and the terminal device selects the corresponding power control value in "-1,1" to calculate the transmission 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 transmit 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 transmit 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 transmit power of the SRS with a period of 30 time units. The terminal device uses "1" as the power control value to determine the transmit 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 transmit power of the SRS with a period of 40 time units.

[0146] It should be understood that when the terminal device determines the transmission 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 transmission power of the SRS this time based on the transmission 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 transmission power of the SRS this time based on the transmission power of the SRS determined according to the previous effective time period and the power control value corresponding to the effective time period.

[0147] As an example, assume that the transmit power determined by the terminal device in time unit #1 is a dB, 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, and time unit #2 is after time unit #1. The terminal device determines that the transmit power of the SRS is 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 that the transmit power of the SRS is a-1-1dB in time unit #4, and the time offset between time unit #4 and time unit #2 is 20 time units.

[0148] As another example, assume that the transmit power determined by the terminal device on time unit #1 is a dB, where a is a positive number. The terminal device obtains at least one power control value (e.g., -1, 2) on time unit #2, as well as 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), and time unit #2 is after time unit #1. The terminal device determines that the transmit power of the SRS is a-1dB on time unit #3, where the time offset between time unit #3 and time unit #2 is 2 time units. The terminal device determines that the transmit power of the SRS is a-1+2dB on time unit #4, where the time offset between time unit #4 and time unit #1 is 4 time units. The transmit power of the SRS determined by the terminal device on time unit #5 is a-1+2-1dB, 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.

[0149] 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.

[0150] For method 2:

[0151] Indication information of at least one power control value, indication information of at least one effective time offset and / or 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 transmit power of the SRS based on at least one effective time offset and / or at least one effective time period.

[0152] 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 specific examples, please refer to the above Figure 2 Detailed introduction in.

[0153] As another example, the third information includes a second index, and 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 indicates the correspondence between at least one power control value, and at least one effective time offset and / or at least one effective time period through indication information.

[0154] For example, the terminal device is predefined with respect to the 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:

[0155] Table 3

[0156]

[0157] 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: Absoluteδ SRS [dB] is the absolute value of TPC, and the fourth column: Time Period is the effective time period. The terminal device determines the specific row in Table 3 according to the second index in the third information, and further selects the accumulated TPC value or the absolute value of TPC as the power control value for determining the SRS transmit power according to the instruction of the network device or the predefined rule.

[0158] It should be understood that, as shown in Table 3, the TPC cumulative value and the 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 according to 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 transmission power of the SRS on time unit #2. Among them, the effective time offset corresponding to the power control value can be predefined by the system or preconfigured. Among them, 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. Further, the terminal device periodically uses the transmission power of the SRS determined according to the power control value on time unit #2 to send the SRS according to the value of the effective time period corresponding to the power control value according to Table 3.

[0159] Assume that the second index in the third information is 2, and the terminal device selects one from the TPC cumulative value "3" and the TPC absolute value "4" in the third row of Table 3 as a power control value to determine the transmission power of the SRS according to the value of the second index 2, wherein the effective time period corresponding to the TPC cumulative value "3" and the TPC absolute value "4" is 10 time units. The terminal device receives the third information, and determines to use the power control value (for example, the TPC cumulative value "3") to determine the transmission power of the SRS in the corresponding time unit according to the effective time offset according to the second index in the third information, as well as the predefined effective time offset and the corresponding relationship in Table 3, and at the same time, periodically uses the SRS transmission power determined according to the TPC cumulative value "3" at the effective time offset according to the effective time period "10 time units" to send the SRS.

[0160] Assume again that the second index in the third information is 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 as the power control value to determine the transmission power of the SRS based on the value of the second index 6, 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, as well as 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.

[0161] For example, the terminal device is predefined with respect to the 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:

[0162] Table 4

[0163]

[0164] 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: Absoluteδ SRS [dB] is the absolute value of TPC, 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 according to 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 according to the instruction of the network device or the predefined rule.

[0165] It should be understood that, as shown in Table 4, the TPC cumulative value and the 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 according to the third information, and the terminal device calculates the transmission power of the SRS using the power control value according to the effective time offset corresponding to the TPC value, and periodically sends the SRS according to the corresponding transmission power according to the effective time period.

[0166] Assume that the value of the second index in the third information is 0, and the terminal device selects one from the TPC cumulative value "-1" and the TPC absolute value "-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 0. The effective time offset corresponding to the TPC cumulative value "-1" and the TPC absolute value "-4" is 0 time units, and the effective time period is 10 time units. The terminal device receives the third information at time unit #1, and uses the power control value (for example, the TPC cumulative value "-1") to determine the transmission power of the SRS at time unit #2, wherein the interval between time unit #1 and time unit #2 is 0 time units. The terminal device periodically sends the SRS based on the effective time period "10 time units" using the transmission power of the SRS calculated based on the TPC cumulative value "-1" at time unit #2.

[0167] Assume again that the value of the second index in the third information is 7, and the terminal device selects one from the TPC cumulative value "3" and the TPC absolute value "4" in the 8th row of Table 4 as the 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 "3" and the TPC absolute value "4" is 50 time units, and the effective time period is 80 time units. The terminal device receives the third information at time unit #1, and uses the power control value (for example, the TPC absolute value "1") at time unit #2 to determine the transmission power of the SRS, wherein the interval between time unit #1 and time unit #2 is 50 time units. The terminal device periodically transmits the SRS based on the effective time period "20 time units" using the transmission power of the SRS calculated based on the TPC cumulative value "1" at time unit #2.

[0168] 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 the TPC value as an example, as shown in Table 5:

[0169] Table 5

[0170]

[0171] 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: Absoluteδ SRS[dB] is the absolute value of TPC, 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 6 according to the specific value of the second index in the third information, and further selects the accumulated TPC value or the absolute value of TPC as the power control value for determining the SRS transmit power according to the instruction of the network device or the predefined rules.

[0172] It should be understood that, as shown in Table 5, the values ​​of 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 SRS. The terminal device obtains multiple power control values, multiple effective time offsets, and multiple effective time periods according to the third information, and the terminal device periodically transmits the SRS according to each effective time period using the SRS transmission power determined according to each power control value at each effective time offset according to each effective time period according to the multiple effective time offsets and multiple effective time periods corresponding to the multiple power control values.

[0173] Assume that the second index in the third information is 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 a power control value to determine the transmission power of the SRS according to the value of the second index 2, wherein the effective time offset of "1" in the TPC cumulative value "1,3" is 10 time units, and the effective time offset of "3" is 20 time units; the effective time offset of "1" in the TPC absolute value "1,4" is 10 time units, and the effective time offset of "4" is 20 time units. 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 to use the TPC cumulative value "-1" as the power control value to determine the transmission power of the SRS at time unit #2 according to the second index in the third information and Table 5. The time interval between time unit #1 and time unit #2 is 10 time units. The terminal device determines that the TPC cumulative value "3" is used as the power control value to determine the transmission power of the SRS in time unit #3 according to the second index in the third information and Table 5. The time interval between time unit #1 and time unit #3 is 20 time units. The terminal device uses "1,3" in the TPC cumulative value as the power adjustment value to determine that the period of the transmission power is 80 time units.

[0174] 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 at least one power control value includes multiple power control values, at least one effective time offset includes multiple effective time offsets, and 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:

[0175] Table 6

[0176]

[0177] 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: Absoluteδ SRS [dB] is the absolute value of TPC, 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 6 according to the specific value of the second index in the third information, and further selects the accumulated TPC value or the absolute value of TPC as the power control value for determining the SRS transmit power according to the instruction of the network device or the predefined rules.

[0178] 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), and 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, and 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 transmission power determined according to the corresponding power control value at each effective time offset according to the multiple effective time periods.

[0179] Assume that the value of the second index in the third information is 1. The terminal device selects a TPC from the TPC cumulative value "-1, 1, 2, -1, 3, -3, -2, 0" and the TPC absolute value "-4, 1, 3, -3, 5, -5, -2, 1" in the second row of Table 6 as the power control value to determine the transmission power of the SRS according to the value 1 of the second index. Among them, the TPC cumulative value "-1, 1, 2, -1, 3, -3, -2, 0" has an effective time offset of 0 for "-1", an effective time offset of 10 time units for "1", an effective time offset of 20 for "2", an effective time offset of 30 time units for "-1", an effective time offset of 40 for "3", an effective time offset of 50 time units for "-3", an effective time offset of 60 time units for "-2", and an effective time offset of 70 time units for "1". The absolute TPC value is "-4,1,3,-3,5,-5,-2,1". In this case, 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.

[0180] 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 to use the TPC cumulative value "-1" as the power control value to determine the transmission power of the SRS at time unit #2 based on the second index in the third information and Table 6. The time interval between time unit #1 and time unit #2 is 0 time units. The terminal device determines to use the TPC cumulative value "1" as the power control value to determine the transmission power of the SRS at time unit #3 based on the second index in the third information and Table 6. The time interval between time unit #1 and time unit #3 is 10 time units, and so on.

[0181] 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.

[0182] 203. The terminal device sends an SRS according to the transmission power at a time unit in the first time unit set.

[0183] Specifically, the terminal device obtains at least one power control value and at least one time unit set of the SRS, and 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 the at least one time unit set. The terminal device sends the SRS to the network device according to the determined transmission power of the SRS in the time unit in the first time unit set.

[0184] 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 at 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.

[0185] According to the above Figure 2According to the method shown, in a multi-station collaborative scenario, the SRS signal of the terminal device may be interfered 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 by 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 to determine the transmission power of the SRS based on the at least one power control value and the at least one time unit set, 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.

[0186] Figure 4 and Figure 5 The following is a schematic diagram of the structure 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 of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 The terminal device 101 and the terminal device 102 shown in the figure may also be as follows Figure 1 The network device 103 and the network device 104 shown may also be modules (such as chips) applied to terminal devices or network devices.

[0187] like Figure 4 As shown, the communication device 400 includes a processing unit 410 and a transceiver unit 420. The communication device 400 is used to implement the above Figure 4 The functions of the terminal device or the network device in the method embodiment are shown.

[0188] When the communication device 400 is used to implement Figure 2 The functions of the terminal device in the method embodiment shown are:

[0189] The transceiver unit 420 is configured to provide 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;

[0190] The processing unit 410 is used to determine the transmission power of the SRS in the first time unit set according to 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 according to the transmission power in the first time unit in the first time unit set.

[0191] The transceiver unit 420 may perform Figure 2 The receiving and sending processing in

[0192] In a possible implementation, the communication device 400 further includes a processing unit 410, which can execute Figure 4 Other processing besides receiving and sending.

[0193] When the communication device 400 is used to implement Figure 4 The functions of the network device in the method embodiment shown are:

[0194] The transceiver unit 420 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 to the 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;

[0195] The transceiver unit 420 is also used to receive an SRS from a terminal device at a time unit in a first time unit set, and the transmission power of the SRS is determined according to 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.

[0196] The transceiver unit 420 may perform Figure 2 The receiving and sending processing in

[0197] In a possible implementation, the communication device 400 further includes a processing unit 410, which can execute Figure 4 Other processing besides receiving and sending.

[0198] like Figure 5 As shown, 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 can also include a memory 530 for storing instructions executed by the processor 510 or storing input data required by the processor 510 to execute instructions or storing data generated after the processor 510 executes instructions.

[0199] When the communication device 510 is used to implement Figure 4 When the method is shown, the processor 510 is used to implement the function of the processing unit 410, and the interface circuit 520 is used to implement the function of the transceiver unit 420.

[0200] When the above communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiment. The terminal chip receives information from other modules in the terminal (such as a radio frequency module or an 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 an antenna), and the information is sent by the terminal to the base station.

[0201] 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 a baseband chip of a base station, or it can be a DU or other module, and the DU here can be a DU under an open radio access network (O-RAN) architecture.

[0202] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or 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.

[0203] 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 runs on a computer, the computer executes the method of the terminal device in the aforementioned method embodiment.

[0204] 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, the computer executes the method of the first network device in the aforementioned method embodiment.

[0205] 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, the computer executes the method of the second network device in the aforementioned method embodiment.

[0206] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores a program code. When the program code runs on a computer, the computer executes the method of the terminal device in the aforementioned method embodiment.

[0207] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores a 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.

[0208] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores a 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.

[0209] An embodiment of the present application also 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.

[0210] An embodiment of the present application also provides a system for collaborative transmission data scheduling, which includes the first network device, the second network device and a terminal device in the above embodiment.

[0211] The terms "component", "module", "system", etc. used in this specification 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 applications running on a computing device and a computing device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0212] Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in 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 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.

[0213] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0214] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0215] 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: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" 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. Where a, b and c can be single or multiple, respectively.

[0216] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0217] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0218] 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.

[0219] 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 can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0220] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power control method, characterized in that: include: 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, where the at least one time unit set corresponds one-to-one to the at least one power control value; The terminal device determines, 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 terminal device sends the SRS to the network device according to the transmission power at the 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 terminal device obtains indication information of at least one power control value of the SRS and indication information of at least one time unit, including: The terminal device obtains 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 terminal device obtains 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 terminal device receives first information and second information, 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.

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 terminal device obtains 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 terminal device receives third information, which 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.

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 terminal device, the interference combination is determined by at least one device, and the at least one device includes the terminal device.

8. A power control method, characterized in that: include: The network device sends 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 the 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 network device receives 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 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 network device sends indication information of at least one power control value of the SRS and indication information of at least one time unit, including: The network device sends 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 network device sends 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 network device sends 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 network device sends indication information of at least one power control value of a sounding reference signal SRS, and indication information of at least one effective time offset and / or indication information of at least one effective time period, including: The network device sends 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.

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 the network device sends 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 network device determines the at least one power control value according to an 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.

15. A communication device, characterized in that: include: A processor, configured to execute a computer program so that the communication device executes the method according to any one of claims 1 to 7, or executes the method according to any one of claims 8 to 14.

16. The device according to claim 15, characterized in that The communication device further comprises a memory, the memory being coupled to the processor, the memory storing the computer program.

17. 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.

18. 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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