Communication method and apparatus

Abstract

The present application relates to the technical field of communications, and provides a communication method and apparatus. The method comprises: a terminal device receives indication information, wherein the indication information is used for indicating that SRS transmission on a first symbol in an SRS resource is canceled; and the terminal device transmits an SRS on at least one second symbol, wherein the at least one second symbol is a symbol among at least one consecutive symbol corresponding to a first time period in the SRS resource, the first time period is a time period between a first moment and a second moment, the first moment is a moment when the indication information is parsed by the terminal device, the second moment is a moment corresponding to the starting position of the first symbol, and antenna ports corresponding to the at least one second symbol and transmitting the SRS comprise all antenna ports of the terminal device. By means of the communication method provided by embodiments of the present application, a symbol used for transmitting an SRS can be selected from an SRS resource on the basis of a timing relationship, improving the accuracy of uplink channel acquisition, and ensuring the uplink transmission performance.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 28, 2023, with application number 202311286257.3 and application name “Communication Method and Device,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communication technologies, and more specifically, to a communication method and apparatus. Background Art

[0003] Currently, network equipment performs channel measurement based on the received sounding reference signal (SRS) and obtains the uplink channel information of the terminal device, thereby scheduling data for the terminal device based on the uplink channel information. The terminal device transmits the physical uplink control channel (PUSCH) according to the scheduling of the network equipment. When the transmission of the SRS on the nearest SRS resource conflicts with other transmissions, such as the physical uplink control channel (PUCCH), resulting in the cancellation of part or all of the SRS transmission in the SRS resource, the network device performs channel measurement based on the SRS received on the previous SRS resource and schedules the PUSCH based on the measurement results.

[0004] However, scheduling PUSCH based on the measurement results of the SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance. In addition, because the information that the network device indicates to the terminal device that some or all SRS transmissions in the SRS resource have been canceled is timed with the transmission of the SRS, the terminal device may be instructed to cancel some or all SRS transmissions during the SRS transmission process, further affecting the accuracy of uplink channel acquisition and uplink transmission performance.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a communication method and apparatus that can select symbols in SRS resources for sending SRS based on the timing relationship between indication information indicating SRS transmission cancellation and SRS, thereby improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0007] In the first aspect, a communication method is provided, which can be executed by a terminal device, or by a module (such as a chip or circuit) in the terminal device, or by a logical node, logical module or software that can implement all or part of the terminal device functions, and this application does not limit this.

[0008] The method includes: a terminal device receives indication information, the indication information is used to indicate that the SRS transmission on the first symbol in the SRS resource is canceled; the terminal device transmits the SRS on at least one second symbol, the at least one second symbol is a symbol in at least one continuous symbol corresponding to a first time period in the SRS resource, the first time period is a time period between a first moment and a second moment, the first moment is a moment when the indication information is parsed by the terminal device, the second moment is a moment corresponding to the starting position of the first symbol, and the antenna port for transmitting the SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device.

[0009] Specifically, the reason for canceling the transmission of the SRS on the above-mentioned first symbol may be: the transmission of the SRS by the terminal device on the above-mentioned first symbol conflicts with or overlaps with the transmission of the first transmission object by the terminal device on the above-mentioned first symbol; or, the reason for canceling the transmission of the SRS on the above-mentioned first symbol may also be: the priority of the terminal device transmitting the SRS on the above-mentioned at least one symbol is lower than the priority of the terminal device transmitting the first transmission object on the above-mentioned at least one symbol; or, the reason for canceling the transmission of the SRS on the above-mentioned first symbol may also be: the transmission of the terminal device on the above-mentioned first symbol is configured as zero power, etc. The reason for canceling the above-mentioned first symbol may also be other, which is not limited in this application.

[0010] Exemplarily, the above-mentioned first transmission object can be a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH), physical random access channel (PRACH), etc. used to carry hybrid automatic repeat request affirmative acknowledgement (HARQ-ACK) or positive scheduling request (positive SR) or rank indicator (RI) or channel state information reference signal resource indicator (CRI) or SSB resource indicator (SS / PBCH block resource indicator, SSBRI).

[0011] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason for canceling the transmission of SRS on the first symbol may be: the periodic or semi-persistent transmission of SRS by the terminal device on the first symbol conflicts with or overlaps with the second transmission object sent by the terminal device on the first symbol; or, the reason for canceling the transmission of SRS on the first symbol may also be: the priority of the periodic or semi-persistent transmission of SRS by the terminal device on at least one symbol is lower than the priority of the second transmission object sent by the terminal device on at least one symbol; or, the reason for canceling the transmission of SRS on the first symbol may also be: the transmission of the terminal device on the first symbol is configured as zero power, etc. The reason for canceling the first symbol may also be other reasons, which are not limited in this application.

[0012] Exemplarily, the second transmission object may be a PUSCH used to carry aperiodic CSI.

[0013] Alternatively, the terminal device sends SRS periodically. The reason for canceling the transmission of SRS on the first symbol may be that the periodic transmission of SRS by the terminal device on the first symbol conflicts with or overlaps with the transmission of the third transmission object by the terminal device on the first symbol; or, the reason for canceling the transmission of SRS on the first symbol may also be that the priority of the periodic transmission of SRS by the terminal device on at least one symbol is lower than the priority of the third transmission object by the terminal device on at least one symbol; or, the reason for canceling the transmission of SRS on the first symbol may also be that the transmission of the terminal device on the first symbol is configured as zero power, etc. The reason for canceling the first symbol may also be other reasons, which are not limited in this application.

[0014] Exemplarily, the third transmission object may be a PUSCH used to carry semi-persistent CSI.

[0015] It should be noted that the first transmission object, the second transmission object and the third transmission object involved below can all refer to the above description of the first transmission object, the second transmission object and the third transmission object, and will not be repeated below.

[0016] Specifically, the above-mentioned SRS resource may include a time slot, or may be any time-frequency resource configured by the network device, which is not limited in this application.

[0017] Specifically, the "all antenna ports of the terminal device" referred to in this application may be all antenna ports of the terminal device used to send the above-mentioned SRS. All antenna ports of the terminal device used to send the SRS can be configured by the network device. The "all antenna ports of the terminal device" appearing below can be interpreted similarly and will not be repeated below.

[0018] It should be understood that the above technical solution is applicable to scenarios where the transmission interruption of an intermediate symbol on an SRS resource causes the phase continuity between the two segments before and after the intermediate symbol to be lost. The above technical solution can also be applied to other scenarios, such as scenarios where the transmission interruption of an intermediate symbol on an SRS resource can ensure the phase continuity between the two segments before and after the intermediate symbol, and this application does not make specific limitations.

[0019] According to the technical solution provided in the present application, the terminal device can select at least one second symbol in the SRS resource that can be used to send the SRS based on the timing relationship between the indication information indicating the cancellation of the SRS transmission and the SRS, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one second symbol, thereby improving the accuracy of the uplink channel acquisition and ensuring the uplink transmission performance.

[0020] In combination with the first aspect, in certain implementations of the first aspect, all antenna ports of the terminal device send the SRS on at least one second symbol the same number of times.

[0021] Alternatively, the number of times at least one second symbol corresponds to each antenna port is the same.

[0022] It should be understood that "the number of times at least one second symbol corresponds to an antenna port" refers to the number of symbols in the at least one second symbol that correspond to that antenna port. Therefore, the phrase "the number of times at least one second symbol corresponds to each antenna port is the same" means that the number of symbols in the at least one second symbol that correspond to each antenna port is the same. The number of times symbols correspond to antenna ports discussed below can refer to the description of "the number of times at least one second symbol corresponds to an antenna port" and will not be further elaborated below.

[0023] According to the above technical solution, each antenna port among all the antenna ports of the terminal device sends the SRS on the above at least one second symbol the same number of times, so that each antenna port is measured by the uplink channel the same number of times, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guaranteeing the uplink transmission performance.

[0024] In combination with the first aspect, in certain implementations of the first aspect, at least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and at least one second symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0025] It should be understood that the at least one consecutive symbol in the SRS resource corresponding to the first time period can be considered a first symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the first symbol set, including the first symbol set itself. In other words, there is at least one way to select any one or multiple consecutive elements from the first symbol set, and the result of each selection method corresponds to the at least one symbol set.

[0026] According to the above technical solution, the number of at least one second symbol used to send SRS is as large as possible, so that the terminal device can maintain the advantage of repeated SRS transmission as much as possible, thereby improving the signal-to-noise ratio of the network device receiving SRS, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0027] In combination with the first aspect, in certain implementations of the first aspect, at least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

[0028] According to the above technical solution, the time for sending at least one second symbol of SRS is as close as possible to the time when the network device performs uplink scheduling, so that the network device can perform uplink channel measurement based on the latest SRS of the terminal device as much as possible, thereby improving the accuracy of the uplink channel measurement and ensuring uplink transmission performance.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the method also includes canceling the sending of SRS on a third symbol, where the third symbol is all symbols in the SRS resource corresponding to the second time period except the first symbol and at least one second symbol, and the second time period is the time period between the first moment and the end moment of the SRS resource.

[0030] It should be understood that the method provided in the first aspect above can be repeatedly executed on the same SRS resource, that is, for multiple indication information received at different times, the method provided in the first aspect above can be executed sequentially according to the timing of reception. If there is no at least one second symbol that meets the above conditions in at least one continuous symbol corresponding to the first time period corresponding to a certain indication information, the terminal device can actively cancel the SRS transmission on at least one continuous symbol corresponding to the first time period corresponding to the indication information. If there is at least one second symbol that meets the above conditions in at least one continuous symbol corresponding to the first time period corresponding to a certain indication information, in some possible implementations, the terminal device actively cancels the SRS transmission on symbols other than the at least one second symbol in at least one continuous symbol corresponding to the first time period corresponding to the indication information; in other possible implementations, the terminal device actively cancels the SRS transmission on symbols other than the first symbol and at least one second symbol in at least one continuous symbol corresponding to the second time period corresponding to the indication information. For some other possible implementations above, it means that the SRS transmission on all remaining symbols on the SRS resource after the first time period corresponding to the indication information is actively canceled, that is, the terminal device may no longer repeat the method provided in the first aspect for other indication information corresponding to the SRS resource received after the indication information.

[0031] According to the above technical solution, the resources used for transmitting SRS can be saved, and the waste of SRS resources caused by transmitting invalid SRS can be avoided.

[0032] On the second aspect, a communication method is provided, which can be executed by a terminal device, or by a module (such as a chip or circuit) in the terminal device, or by a logical node, logical module or software that can realize all or part of the terminal device functions, and this application does not limit this.

[0033] The method includes: a terminal device receives multiple indication information, where the multiple indication information is used to indicate that SRS transmission on multiple symbols in an SRS resource is canceled; the terminal device transmits an SRS on at least one fourth symbol and at least one fifth symbol, where the at least one fourth symbol is a symbol in at least one continuous symbol corresponding to a third time period in the SRS resource, the third time period is a time period between a third moment and a fourth moment, the third moment is a moment when the first indication information is parsed by the terminal device, the fourth moment is a moment corresponding to a starting position of a sixth symbol, the first indication information is the latest indication information received among the multiple indication information, the sixth symbol is a symbol indicating that SRS transmission is canceled as indicated by the first indication information, the at least one fifth symbol is all symbols except at least one seventh symbol among the symbols corresponding to the fourth time period in the SRS resource, the fourth time period is a time period between the starting moment of the SRS resource and the third moment, the at least one seventh symbol is a symbol indicating that SRS transmission is canceled as indicated by at least one second indication information, the at least one second indication information is all indication information except the first indication information among the multiple indication information, and the antenna ports for transmitting SRS corresponding to the at least one fourth symbol and the at least one fifth symbol include all antenna ports of the terminal device.

[0034] Specifically, the reason for canceling the transmission of the SRS on the sixth symbol and / or at least one seventh symbol may be: the transmission of the SRS by the terminal device on the sixth symbol and / or at least one seventh symbol conflicts with or overlaps with the transmission of the first transmission object by the terminal device on the sixth symbol and / or at least one seventh symbol; or, the reason for canceling the transmission of the SRS on the sixth symbol and / or at least one seventh symbol may also be: the priority of the terminal device sending the SRS on the at least one symbol is lower than the priority of the terminal device sending the first transmission object on the at least one symbol; or, the reason for canceling the transmission of the SRS on the sixth symbol and / or at least one seventh symbol may also be: the transmission of the terminal device on the sixth symbol and / or at least one seventh symbol is configured as zero power, etc. The reason for canceling the sixth symbol and / or at least one seventh symbol may also be other, which is not limited in this application.

[0035] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may be: the periodic or semi-persistent transmission of SRS by the terminal device on the sixth symbol and / or at least one seventh symbol conflicts with or overlaps with the second transmission object sent by the terminal device on the sixth symbol and / or at least one seventh symbol; or, the reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may also be: the priority of the periodic or semi-persistent transmission of SRS by the terminal device on the at least one symbol is lower than the priority of the second transmission object sent by the terminal device on the at least one symbol; or, the reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may also be: the transmission of the terminal device on the sixth symbol and / or at least one seventh symbol is configured as zero power, etc. The reasons for canceling the sixth symbol and / or at least one seventh symbol may be other reasons, which are not limited in this application.

[0036] Alternatively, the terminal device sends SRS periodically. The reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may be that the periodic transmission of SRS by the terminal device on the sixth symbol and / or at least one seventh symbol conflicts or overlaps with the transmission of the third transmission object by the terminal device on the sixth symbol and / or at least one seventh symbol; or, the reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may also be that the priority of the periodic transmission of SRS by the terminal device on the at least one symbol is lower than the priority of the third transmission object by the terminal device on the at least one symbol; or, the reason for canceling the transmission of SRS on the sixth symbol and / or at least one seventh symbol may also be that the transmission of the terminal device on the sixth symbol and / or at least one seventh symbol is configured as zero power, etc. The reason for canceling the sixth symbol and / or at least one seventh symbol may also be other, which is not limited in this application.

[0037] Specifically, the above-mentioned SRS resource may include a time slot, or may be any time-frequency resource configured by the network device, which is not limited in this application.

[0038] It should be understood that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and at least one fifth symbol include all antenna ports of the terminal device, which means that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and the antenna ports for transmitting SRS corresponding to at least one fifth symbol together include all antenna ports of the terminal device. In other words, the antenna ports for transmitting SRS corresponding to at least one fourth symbol may include some or all antenna ports of the terminal device, and the antenna ports for transmitting SRS corresponding to at least one fifth symbol may also include some or all antenna ports of the terminal device.

[0039] It should be understood that the above technical solution is applicable to the scenario where the transmission interruption of the middle symbol on the SRS resource can ensure the phase continuity between the two symbols before and after the middle symbol.

[0040] According to the technical solution provided in the present application, when the transmission interruption of the intermediate symbol does not affect the continuity of the previous and next phases, the terminal device can retain as many as possible of at least one fifth symbol on the SRS resources before the moment when the latest received first indication information is parsed, and determine at least one fourth symbol in the resources corresponding to the third time period corresponding to the first indication information, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one fourth symbol and at least one fifth symbol, thereby increasing the number of SRSs that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0041] In combination with the second aspect, in certain implementations of the second aspect, all antenna ports of the terminal device transmit the SRS the same number of times on at least one fourth symbol and at least one fifth symbol.

[0042] Alternatively, the number of times at least one fourth symbol and at least one fifth symbol correspond to each antenna port is the same.

[0043] It should be understood that the aforementioned "all antenna ports transmit the SRS the same number of times on at least one fourth symbol and at least one fifth symbol" means that the sum of the number of times each antenna port transmits the SRS on at least one fourth symbol and at least one fifth symbol is the same. In other words, the sum of the number of times each antenna port transmits the SRS on at least one fourth symbol and at least one fifth symbol is the same.

[0044] According to the above technical solution, each antenna port is measured the same number of times by the uplink channel, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guaranteeing the uplink transmission performance.

[0045] In combination with the second aspect, in certain implementations of the second aspect, at least one continuous symbol corresponding to the third time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and at least one fourth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0046] It should be understood that the at least one consecutive symbol in the SRS resource corresponding to the third time period can be considered a second symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the second symbol set, including the second symbol set itself. In other words, there is at least one way to select one or more elements from the second symbol set, and the result of each selection method corresponds to the at least one symbol set.

[0047] According to the above technical solution, the number of at least one fourth symbol used to send SRS is as large as possible, so that the terminal device can maintain the advantage of repeated SRS transmission as much as possible, thereby improving the signal-to-noise ratio of the network device receiving SRS, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0048] In combination with the second aspect, in certain implementations of the second aspect, at least one fourth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending SRS, S is a positive integer, the end time of each symbol in at least one fourth symbol is later than the end time of the same symbol in at least one eighth symbol, the antenna ports for sending SRS corresponding to the same symbols are the same, and at least one eighth symbol is all symbols of at least one consecutive symbol corresponding to the third time period in the SRS resource except at least one fourth symbol.

[0049] According to the above technical solution, the time for sending at least one fourth symbol of SRS is as close as possible to the time when the network device performs uplink scheduling, so that the network device can perform uplink channel measurement based on the latest SRS of the terminal device as much as possible, thereby improving the accuracy of the uplink channel measurement and ensuring uplink transmission performance.

[0050] On the third aspect, a communication method is provided, which can be executed by a network device, or by a module in the network device (such as a chip or circuit), or by a logical node, logical module or software that can realize all or part of the functions of the network device. This application does not limit this.

[0051] The method includes: a network device receives an SRS on at least one ninth symbol in an SRS resource, the SRS resource includes at least one tenth symbol, and the at least one tenth symbol is a symbol in at least one ninth symbol; the network device associates uplink scheduling with the SRS resource; wherein, the antenna port corresponding to the at least one tenth symbol includes all antenna ports of the terminal device, or the antenna port corresponding to the at least one tenth symbol includes all antenna ports related to the uplink scheduling.

[0052] Specifically, the network device receives an SRS transmitted by the terminal device on the above-mentioned SRS resource, wherein at least one ninth symbol is a symbol in the SRS resource for which the SRS transmission has not been canceled by the terminal device. The SRS transmission on symbols other than the at least one ninth symbol on the SRS resource may be canceled (dropping) by the terminal device or actively canceled (cancelled) by the terminal device.

[0053] Exemplarily, the symbol on which the terminal device is instructed to cancel the SRS transmission may be the symbol indicated in the indication information received by the terminal device, such as the first symbol in the aforementioned first aspect, or the sixth symbol and / or at least one seventh symbol in the aforementioned second aspect. Specifically, the reason why the transmission of the SRS on the above-mentioned symbol is instructed to be canceled may be: the transmission of the SRS by the terminal device on the above-mentioned symbol conflicts with or overlaps with the transmission of the first transmission object by the terminal device on the above-mentioned symbol; or, the reason why the transmission of the SRS on the above-mentioned symbol is instructed to be canceled may also be: the priority of the terminal device to transmit the SRS on the above-mentioned at least one symbol is lower than the priority of the terminal device to transmit the first transmission object on the above-mentioned symbol; or, the reason why the transmission of the SRS on the above-mentioned symbol is instructed to be canceled may also be: the transmission of the terminal device on the above-mentioned symbol is configured as zero power, etc. The reason why the above-mentioned symbol is instructed to be canceled may also be other reasons, which are not limited in this application.

[0054] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may be: the periodic or semi-persistent sending of SRS by the terminal device on the above-mentioned symbol conflicts or overlaps with the sending of the second transmission object by the terminal device on the above-mentioned symbol; or, the reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may also be: the priority of the periodic or semi-persistent sending of SRS by the terminal device on at least one of the above-mentioned symbols is lower than the priority of the second transmission object sent by the terminal device on the above-mentioned symbol; or, the reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may also be: the transmission of the terminal device on the above-mentioned symbol is configured as zero power, etc. The reason why the above-mentioned symbol is instructed to be canceled may also be other reasons, which are not limited in this application.

[0055] Alternatively, the terminal device sends SRS periodically. The reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may be: the periodic sending of SRS by the terminal device on the above-mentioned symbol conflicts or overlaps with the sending of the third transmission object by the terminal device on the above-mentioned symbol; or, the reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may also be: the priority of the periodic sending of SRS by the terminal device on at least one of the above-mentioned symbols is lower than the priority of the second transmission object sent by the terminal device on the above-mentioned symbol; or, the reason why the sending of SRS on the above-mentioned symbol is instructed to be canceled may also be: the transmission of the terminal device on the above-mentioned symbol is configured as zero power, etc. The reason why the above-mentioned symbol is instructed to be canceled may also be other reasons, which are not limited in this application.

[0056] Exemplarily, the terminal device actively cancels SRS transmission on a symbol when some symbols in the SRS resource are instructed to be canceled, and the SRS transmitted on the remaining symbols in the SRS resource is wasted due to reasons such as affected phase continuity and / or inconsistent number of corresponding antenna ports. The terminal device actively cancels SRS transmission on some or all of the remaining symbols. For example, symbols other than the first symbol and at least one second symbol in the SRS resource in the first aspect, or symbols other than at least one fourth symbol corresponding to the third time period in the SRS resource in the second aspect.

[0057] Specifically, the above-mentioned SRS resource may include a time slot, or may be any time-frequency resource configured by the network device, which is not limited in this application.

[0058] It should be understood that uplink scheduling refers to the scheduling of the physical uplink shared channel (PUSCH) transmitted by the network device to the terminal device. Specifically, the network device performs channel measurement based on the received SRS and obtains the uplink (UL) channel information of the terminal device, thereby scheduling the terminal device to transmit PUSCH based on the UL channel information. Therefore, the network device associates uplink scheduling with the SRS resource, which means that the network device performs channel measurement based on the SRS received on the SRS resource.

[0059] Specifically, when there is at least one tenth symbol meeting the conditions in the SRS resource, the network device associates uplink scheduling with the SRS resource, which means that the network device performs channel measurement based on the SRS received on the at least one tenth symbol.

[0060] Optionally, when there is no at least one tenth symbol meeting the condition in the SRS resource, the network device can associate the uplink scheduling with a timing-previous SRS resource meeting the condition.

[0061] It should be understood that the antenna ports associated with uplink scheduling refer to the antenna ports used by the network device to schedule the terminal device to transmit the PUSCH, and all antenna ports associated with uplink scheduling may be some or all antenna ports of the terminal device. The antenna ports corresponding to at least one tenth symbol include all antenna ports associated with uplink scheduling, which means that the antenna ports corresponding to at least one tenth symbol include at least all antenna ports associated with uplink scheduling. Therefore, the antenna ports corresponding to at least one tenth symbol may include some or all antenna ports of the terminal device.

[0062] The at least one tenth symbol may be part or all of the at least one ninth symbol.

[0063] According to the technical solution provided in the present application, the network device can associate the uplink scheduling with the SRS resource when there is at least one tenth symbol in the SRS resource, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one tenth symbol, thereby increasing the number of SRSs that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0064] In combination with the third aspect, in certain implementations of the third aspect, all antenna ports of the terminal device transmit the SRS the same number of times on at least one tenth symbol.

[0065] Alternatively, the number of times at least one tenth symbol corresponds to each antenna port is the same.

[0066] According to the above technical solution, each antenna port among all the antenna ports of the terminal device sends the SRS the same number of times on the above at least one tenth symbol, so that the network device measures the uplink channel of each antenna port the same number of times, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port and guaranteeing the uplink transmission performance.

[0067] In combination with the third aspect, in certain implementations of the third aspect, at least one ninth symbol includes at least one symbol set, each symbol set in at least one symbol set includes one or more symbols, and at least one tenth symbol is a symbol set with the largest number of symbols in at least one symbol set.

[0068] It should be understood that the at least one ninth symbol can be considered a third symbol set, where each symbol is an element of the symbol set. The at least one symbol set can be a subset of the third symbol set, including the third symbol set itself. In other words, there is at least one way to select one or more elements from the third symbol set, and the result of each selection corresponds to the at least one symbol set.

[0069] According to the above technical solution, the number of at least one tenth symbol associated with uplink scheduling is as large as possible, so that the number of repetitions of the SRS used by the network device for channel measurement is as large as possible, thereby improving the signal-to-noise ratio of the SRS used by the network device for channel measurement, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0070] In combination with the third aspect, in certain implementations of the third aspect, at least one tenth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending SRS, S is a positive integer, and the end time of each symbol in at least one tenth symbol is later than the end time of the same symbol in at least one eleventh symbol, and at least one eleventh symbol is all symbols in at least one ninth symbol except at least one tenth symbol.

[0071] According to the above technical solution, the time of at least one tenth symbol associated with the uplink scheduling is as close as possible to the time of the uplink scheduling, so that the network equipment can perform uplink channel measurement based on the latest SRS of the terminal equipment as much as possible, thereby improving the accuracy of the uplink channel measurement and ensuring the uplink transmission performance.

[0072] In combination with the third aspect, in certain implementations of the third aspect, at least one ninth symbol corresponds to N time periods on the SRS resource, each time period in the N time periods corresponds to one or multiple consecutive symbols, and at least one tenth symbol is at least one symbol of the one or multiple consecutive symbols corresponding to the fifth time period in the N time periods, N is a positive integer, wherein the fifth time period is the time period with the largest number of corresponding symbols in the N time periods, and / or the fifth time period is the time period with the latest end time in the N time periods.

[0073] It should be understood that the above technical solution is applicable to the scenario where the transmission interruption of an intermediate symbol on an SRS resource causes the phase continuity between the two symbols before and after the intermediate symbol to be unable to be guaranteed.

[0074] According to the above technical solution, when the transmission interruption of the intermediate symbol affects the continuity of the previous and next phases, the network device can associate the uplink scheduling with the segment of symbols that is closest in time to the uplink scheduling and / or has the largest number of symbols among the multiple segments of symbols receiving the SRS in the SRS resource, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one tenth symbol included in the above segment of symbols, thereby improving the accuracy of the uplink channel measurement and ensuring the uplink transmission performance.

[0075] In combination with the third aspect, in certain implementations of the third aspect, the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in at least one symbol set includes one or multiple consecutive symbols, and at least one tenth symbol is the symbol set with the largest number of symbols in at least one symbol set.

[0076] It should be understood that the symbols corresponding to the fifth time period can be considered a fourth symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the fourth symbol set, including the fourth symbol set itself. In other words, there is at least one way to select any one or multiple consecutive elements from the first symbol set, and the result of each selection corresponds to the at least one symbol set.

[0077] According to the above technical solution, the number of at least one tenth symbol in the fifth time period is as large as possible, so that the number of repetitions of the SRS used by the network device for channel measurement is as large as possible, thereby improving the signal-to-noise ratio of the SRS used by the network device for channel measurement, improving the accuracy of the uplink channel measurement, and ensuring the uplink transmission performance.

[0078] In combination with the third aspect, in certain implementations of the third aspect, the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in at least one symbol set includes one or multiple consecutive symbols, and at least one tenth symbol is the symbol set with the latest end time in at least one symbol set.

[0079] According to the above technical solution, the time of at least one tenth symbol in the fifth time period is as close as possible to the uplink scheduling time, so that the network equipment can perform uplink channel measurement based on the latest SRS of the terminal equipment as much as possible, thereby improving the accuracy of the uplink channel measurement and ensuring the uplink transmission performance.

[0080] In a fourth aspect, a communication device is provided, which may be a terminal device, a module (such as a chip or circuit) in the terminal device, or a logical node, a logical module, or software that can implement all or part of the functions of the terminal device. The device includes: a receiving unit, configured to receive indication information, the indication information being used to indicate that the SRS transmission on the first symbol in the SRS resource is canceled; a sending unit, configured to send the SRS on at least one second symbol, the at least one second symbol being a symbol in at least one continuous symbol corresponding to a first time period in the SRS resource, the first time period being a time period between a first moment and a second moment, the first moment being the moment when the indication information is parsed by the terminal device, the second moment being the moment corresponding to the starting position of the first symbol, and the antenna port for sending the SRS corresponding to the at least one second symbol including all antenna ports of the terminal device.

[0081] In combination with the fourth aspect, in certain implementations of the fourth aspect, all antenna ports of the terminal device send the SRS the same number of times on at least one second symbol.

[0082] In combination with the fourth aspect, in certain implementations of the fourth aspect, at least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and at least one second symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0083] In combination with the fourth aspect, in certain implementations of the fourth aspect, at least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

[0084] In combination with the fourth aspect, in certain implementations of the fourth aspect, the device also includes a processing unit for canceling the sending of SRS on a third symbol, where the third symbol is all symbols in the SRS resource corresponding to the second time period except the first symbol and at least one second symbol, and the second time period is the time period between the first moment and the end moment of the SRS resource.

[0085] The explanation and beneficial effects of the communication device provided in the fourth aspect can refer to the communication method shown in the first aspect and will not be repeated here.

[0086] In the fifth aspect, a communication device is provided, which can be a terminal device, a module in the terminal device (such as a chip or circuit), or a logical node, logical module or software that can realize all or part of the functions of the terminal device. The device includes: a receiving unit, configured to receive multiple indication information, where the multiple indication information is used to indicate that SRS transmission on multiple symbols in an SRS resource is canceled; a sending unit, configured to send an SRS on at least one fourth symbol and at least one fifth symbol, where the at least one fourth symbol is a symbol in at least one continuous symbol corresponding to a third time period in the SRS resource, the third time period is a time period between a third moment and a fourth moment, the third moment is a moment when the first indication information is parsed by a terminal device, the fourth moment is a moment corresponding to a starting position of a sixth symbol, the first indication information is the latest indication information received among the multiple indication information, the sixth symbol is a symbol indicating that SRS transmission is canceled as indicated by the first indication information, the at least one fifth symbol is all symbols except at least one seventh symbol among the symbols corresponding to the fourth time period in the SRS resource, the fourth time period is a time period between a starting moment of the SRS resource and the third moment, the at least one seventh symbol is a symbol indicating that SRS transmission is canceled as indicated by at least one second indication information, the at least one second indication information is all indication information among the multiple indication information except the first indication information, and the antenna ports for sending SRS corresponding to the at least one fourth symbol and the at least one fifth symbol include all antenna ports of the terminal device.

[0087] In combination with the fifth aspect, in certain implementations of the fifth aspect, all antenna ports of the terminal device send the SRS the same number of times on at least one fourth symbol and at least one fifth symbol.

[0088] In combination with the fifth aspect, in certain implementations of the fifth aspect, at least one continuous symbol corresponding to the third time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and at least one fourth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0089] In combination with the fifth aspect, in certain implementations of the fifth aspect, at least one fourth symbol includes S types of symbols, the antenna port for sending SRS corresponding to each of the S types of symbols is different, S is a positive integer, the end time of each symbol in at least one fourth symbol is later than the end time of the same symbol in at least one eighth symbol, the antenna ports for sending SRS corresponding to the same symbols are the same, and at least one eighth symbol is all symbols of at least one continuous symbol corresponding to the third time period in the SRS resource except at least one fourth symbol.

[0090] The explanation and beneficial effects of the communication device-related contents provided in the fifth aspect can refer to the communication method shown in the second aspect and will not be repeated here.

[0091] In a sixth aspect, a communication device is provided, which may be a network device, a module (such as a chip or circuit) in a network device, or a logical node, logic module, or software that can implement all or part of the network device functions. The device includes: a receiving unit, configured to receive an SRS on at least one ninth symbol in an SRS resource, the SRS resource including at least one tenth symbol, the at least one tenth symbol being a symbol in at least one ninth symbol; a processing unit, configured to associate uplink scheduling with the SRS resource; wherein the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, or the antenna ports corresponding to the at least one tenth symbol include all antenna ports related to uplink scheduling.

[0092] In combination with the sixth aspect, in certain implementations of the sixth aspect, all antenna ports of the terminal device send the SRS the same number of times on at least one tenth symbol.

[0093] In combination with the sixth aspect, in certain implementations of the sixth aspect, at least one ninth symbol includes at least one symbol set, each symbol set in at least one symbol set includes one or more symbols, and at least one tenth symbol is a symbol set with the largest number of symbols in at least one symbol set.

[0094] In combination with the sixth aspect, in certain implementations of the sixth aspect, at least one tenth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending SRS, S is a positive integer, and the end time of each symbol in the at least one tenth symbol is later than the end time of the same symbol in the at least one eleventh symbol, and the at least one eleventh symbol is all symbols in the at least one ninth symbol except the at least one tenth symbol.

[0095] In combination with the sixth aspect, in certain implementations of the sixth aspect, at least one ninth symbol corresponds to N time periods on the SRS resource, each of the N time periods corresponds to one or multiple consecutive symbols, and at least one tenth symbol is a symbol among the symbols corresponding to the fifth time period in the N time periods, N is a positive integer, wherein the fifth time period is the time period with the largest number of corresponding symbols among the N time periods, and / or the fifth time period is the time period with the latest end time among the N time periods.

[0096] In combination with the sixth aspect, in certain implementations of the sixth aspect, the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in at least one symbol set includes one or multiple consecutive symbols, and at least one tenth symbol is the symbol set with the largest number of symbols in at least one symbol set.

[0097] In combination with the sixth aspect, in certain implementations of the sixth aspect, the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in at least one symbol set includes one or multiple consecutive symbols, and at least one tenth symbol is the symbol set with the latest end time in at least one symbol set.

[0098] In the seventh aspect, a communication device is provided, comprising a processor, wherein the processor is used to enable the communication device to perform the method described in the first aspect and any possible method of the first aspect by executing a computer program or instruction or through a logic circuit; or to enable the communication device to perform the method described in the second aspect and any possible method of the second aspect; or to enable the communication device to perform the method described in the third aspect and any possible method of the third aspect.

[0099] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0100] In a possible implementation, the communication device further includes a communication interface, which is used to input and / or output signals.

[0101] In an eighth aspect, a communication device is provided, comprising a logic circuit and an input / output interface, the input / output interface being used to input and / or output signals, the logic circuit being used to execute the method described in the first aspect or any possible embodiment of the first aspect; or, the logic circuit being used to execute the method described in the second aspect and any possible embodiment of the second aspect; the logic circuit being used to execute the method described in the third aspect and any possible embodiment of the third aspect.

[0102] In the ninth aspect, a computer-readable storage medium is provided, on which a computer program or instruction is stored. When the computer program or the instruction is run on a computer, the method described in the first aspect or any possibility of the first aspect is executed; or, the method described in the second aspect and any possibility of the second aspect is executed; or, the method described in the third aspect and any possibility of the third aspect is executed.

[0103] In the tenth aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect or any possible form of the first aspect to be executed; or, cause the method described in the second aspect and any possible form of the second aspect to be executed; or cause the method described in the third aspect and any possible form of the third aspect to be executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0104] FIG1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application.

[0105] FIG2 is a schematic diagram of an example of a cyclic repetitive transmission method applicable to an embodiment of the present application.

[0106] FIG3 is a schematic diagram of an example of a continuous repeated transmission method applicable to an embodiment of the present application.

[0107] FIG4 is a schematic flowchart of a communication method 400 applicable to an embodiment of the present application.

[0108] FIG5 is a schematic diagram of an OFDM symbol in an SRS resource applicable to an embodiment of the present application.

[0109] FIG6 is a schematic flowchart of another communication method 600 applicable to an embodiment of the present application.

[0110] FIG7 is a schematic diagram of another example of OFDM symbols in SRS resources applicable to an embodiment of the present application.

[0111] FIG8 is a schematic diagram of another example of OFDM symbols in SRS resources applicable to an embodiment of the present application.

[0112] FIG9 is a schematic diagram of another example of OFDM symbols in SRS resources applicable to an embodiment of the present application.

[0113] FIG10 is a schematic flowchart of another communication method 1000 applicable to an embodiment of the present application.

[0114] FIG11 is a schematic diagram of another example of OFDM symbols in SRS resources applicable to an embodiment of the present application.

[0115] FIG12 is a schematic diagram of another example of OFDM symbols in SRS resources applicable to an embodiment of the present application.

[0116] FIG13 is a schematic block diagram of a communication device 1300 applicable to an embodiment of the present application.

[0117] FIG14 is a schematic block diagram of a communication device 1400 applicable to an embodiment of the present application.

[0118] FIG15 is a schematic block diagram of a communication device 1500 applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0119] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR), and future communication systems.

[0120] As an example and not a limitation, in the embodiments of the present application, the terminal device in the embodiments of the present application may refer to user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device may also be a subscriber unit, a terminal station, a terminal agent, a terminal device device, or a terminal in V2X communication. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network or a terminal in a future evolution network, etc., and the embodiments of the present application are not limited to this.

[0121] The terminal device in the embodiments of the present application may also be a mobile phone, a tablet computer, a computer with wireless transceiver function, a holographic projector, a video player, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a tactile terminal device, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in transportation safety, a wireless terminal in a smart city, and a wireless terminal in a smart home.

[0122] Among them, wearable devices can also be called wearable smart devices. It is a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as head-mounted XR glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those with full functions, large sizes, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0123] In addition, in the embodiment of the present application, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0124] In addition, in this application, the terminal device may also include sensors such as smart printers, train detectors, gas stations, etc., and its main functions include collecting data (part of the terminal device), receiving control information and downlink data from the network device, and sending electromagnetic waves to transmit uplink data to the network device.

[0125] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a base transceiver station (BTS) in a global system of mobile communication (GSM) system or a code division multiple access (CDMA) system, or a base station (nodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolutionary node base (eNB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network and a future communication system, or a network device in a future evolved PLMN network, etc., or an access point (AP) in a WLAN, or a gNB in ​​a new radio (NR) system, and the embodiment of the present application is not limited. It can be understood that all or part of the functions of the network device in the present application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0126] In addition, in an embodiment of the present application, the access network device provides services for a cell, and the terminal device communicates with the access network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the access network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0127] The core network device can be connected to multiple access network devices to control the access network devices, and can distribute data received from the network side (for example, the Internet) to the access network devices.

[0128] In addition, in the present application, the network equipment may include base stations (gNBs), such as macro stations, micro base stations, indoor hotspots, and relay nodes, etc., whose function is to send radio waves to terminal devices to realize downlink data transmission on the one hand, and send scheduling information to control uplink transmission on the other hand, and receive radio waves sent by terminal devices to receive uplink data transmission.

[0129] Among them, the functions and specific implementation methods of the terminal devices, access network devices and core network devices listed above are only exemplary descriptions, and this application is not limited to them.

[0130] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

[0131] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0132] FIG1 is a schematic diagram of a system 100 to which the communication method according to an embodiment of the present application can be applied. As shown in FIG1 , system 100 includes an access network device 102. Access network device 102 may include one or multiple antennas, such as antennas 104, 106, 108, 110, 112, and 114. Furthermore, access network device 102 may additionally include a transmitter chain and a receiver chain. Those skilled in the art will appreciate that each of these may include multiple components related to signal transmission and reception (e.g., a processor, a modulator, a multiplexer, a demodulator, a demultiplexer, or an antenna, etc.).

[0133] The access network device 102 can communicate with a plurality of terminal devices, such as the terminal device 116 and the terminal device 122. However, it is understood that the access network device 102 can communicate with any number of terminal devices similar to the terminal device 116 or the terminal device 122. The terminal devices 116 and 122 can be, for example, head-mounted XR glasses, VR terminals, cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and / or any other suitable devices for communicating on the wireless communication system 100.

[0134] 1 , terminal device 116 is in communication with antennas 112 and 114, where antennas 112 and 114 transmit information to terminal device 116 via a forward link (also known as a downlink) 118 and receive information from terminal device 116 via a reverse link (also known as an uplink) 120. Furthermore, terminal device 122 is in communication with antennas 104 and 106, where antennas 104 and 106 transmit information to terminal device 122 via a forward link 124 and receive information from terminal device 122 via a reverse link 126.

[0135] Each antenna (or antenna group consisting of multiple antennas) and / or area designed for communication is referred to as a sector of the access network device 102. For example, an antenna group may be designed to communicate with terminal devices within a sector of the access network device 102's coverage area. The access network device may transmit signals to all terminal devices within its corresponding sector using a single antenna or multiple antennas with transmit diversity. During communication between the access network device 102 and terminal devices 116 and 122 via forward links 118 and 124, respectively, the access network device 102's transmit antennas may also utilize beamforming to improve the signal-to-noise ratio of the forward links 118 and 124. Furthermore, compared to a method where the access network device transmits signals to all of its terminal devices using a single antenna or multiple antennas with transmit diversity, mobile devices in adjacent cells experience less interference when the access network device 102 utilizes beamforming to transmit signals to randomly dispersed terminal devices 116 and 122 within the relevant coverage area.

[0136] At a given time, the access network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication transmitting device and / or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication transmitting device may obtain (e.g., generate, receive from another communication device, or store in a memory, etc.) a certain number of data bits to be transmitted via a channel to the wireless communication receiving device. Such data bits may be contained in a transmission block (or multiple transmission blocks) of data, and the transmission block may be segmented to generate multiple code blocks.

[0137] In addition, the communication system 100 can be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, an IoT network or other network. Figure 1 is only a simplified schematic diagram for example. The network can also include other access network devices, which are not shown in Figure 1.

[0138] In the embodiment of the present application, data or information can be carried by time-frequency resources, wherein the time-frequency resources may include resources in the time domain and resources in the frequency domain. In the time domain, the time-frequency resources may include one or more time units.

[0139] A time unit may be an orthogonal frequency division multiplexing (OFDM) symbol, or a mini-slot, or a slot, or a subframe, wherein the duration of a subframe in the time domain may be 1 millisecond (ms), a slot consists of 7 or 14 OFDM symbols, and a mini-slot may include at least one OFDM symbol (for example, 2 OFDM symbols or 4 OFDM symbols or 7 OFDM symbols, or any number of symbols less than or equal to 14 OFDM symbols).

[0140] In communication systems, such as 5G systems, beamforming can be used to achieve gain between two connected devices to combat path loss in high-frequency scenarios. The transmitter (e.g., network equipment) and receiver (e.g., terminal device) can use beam training to establish a pairing relationship between the transmit and receive beams.

[0141] The term "beam" can be understood as a spatial filter or spatial parameters. A beam used to transmit signals can be called a transmission beam (Tx beam), which can be a spatial domain transmit filter or a spatial domain transmit parameter. A beam used to receive signals can be called a reception beam (Rx beam), which can be a spatial domain receive filter or a spatial domain receive parameter.

[0142] The beamforming technology can be beamforming or other technologies. For example, the beamforming technology can be digital beamforming, analog beamforming, or hybrid digital / analog beamforming. The transmit beam can refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the receive beam can refer to the distribution of signal strength in different directions in space of the wireless signal received by the antenna.

[0143] In the NR protocol, a beam can be, for example, a spatial filter. However, it should be understood that this application does not exclude the possibility of defining other terms in future protocols to express the same or similar meanings.

[0144] Beam pairing, or the pairing between a transmit beam and a receive beam, is also the pairing between a spatial transmit filter and a spatial receive filter. Transmitting signals between transmit and receive beams that have a beam pairing relationship can achieve greater beamforming gain.

[0145] In one implementation, the transmitting end may transmit the reference signal by beam scanning, and the receiving end may also receive the reference signal by beam scanning. Specifically, the transmitting end may form beams with different directivities in space by beam forming, and may poll on multiple beams with different directivities to transmit the reference signal through beams with different directivities, so that the power of transmitting the reference signal in the direction pointed by the transmitting beam can be maximized. The receiving end may also form beams with different directivities in space by beam forming, and may poll on multiple beams with different directivities to receive the reference signal through beams with different directivities, so that the power of receiving the reference signal at the receiving end can be maximized in the direction pointed by the receiving beam.

[0146] In order to facilitate understanding of the technical solution of the present application, the following is a brief introduction to the terms involved in the embodiments of the present application.

[0147] 1. Sounding Reference Signal (SRS)

[0148] SRS is an uplink reference signal sent by a terminal device to an access network device. The access network device is used to perform channel measurement based on the received SRS and obtain the uplink (UL) channel information of the terminal device, thereby scheduling data for the terminal device based on the UL channel information.

[0149] 2. Antenna port

[0150] Can be referred to as port. It can be understood as a transmitting antenna recognized by the receiving device, or a transmitting antenna that can be distinguished in space. An antenna port can be pre-configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas. Each antenna port can correspond to a reference signal. Therefore, each antenna port can be called a reference signal port, for example, a channel state information reference signal (CSI-RS) port, an SRS port, etc. In the embodiment of the present application, the antenna port may refer to a transceiver unit (TxRU).

[0151] The configuration information of the reference signal resource can be used to configure the transmission properties of the reference signal. For example, the reference signal resource in the embodiment of the present application may include CSI-RS resource, SRS resource, etc. Exemplarily, the configuration information of the SRS resource is used to configure multiple SRS resources, each SRS resource includes Generally speaking, the multiple SRS ports included in each SRS resource are orthogonal.

[0152] 3. Repeated transmission of reference signals

[0153] The transmitting device repeatedly transmits the same reference signal, and the receiving device can combine (i.e., coherently add) the signals received multiple times, thereby achieving the effect of improving the signal-to-interference plus noise ratio (SINR) of the reference signal. Exemplarily, an SRS resource includes two SRS ports, and these two SRS ports use the same physical antenna, the same transmission power, and the same bandwidth to transmit SRS on multiple consecutive symbols. Among them, the repeated transmission of SRS includes cyclic repetition and sequential repetition. Cyclic repetition is to map all ports to s consecutive symbols, and then repeat R = m / s times, as shown in Figure 2. Continuous repetition is to divide all ports into s groups, and the ports in each group are repeatedly mapped to consecutive R = m / s symbols, as shown in Figure 3. Exemplarily, the two SRS ports shown in Figures 2 and 3 are 0 and 1, respectively, and s = 2, m = 6, and R = 3 shown in Figures 2 and 3.

[0154] 4. Dropping of reference signal transmission

[0155] When the transmission of a reference signal collides with other transmissions and the other transmission has a higher priority, the transmission of the reference signal on the conflicting symbols is canceled. For example, when the SRS collides with the physical uplink control channel (PUCCH), the transmission of the SRS on the conflicting symbols is canceled.

[0156] 5. Coherent / incoherent capabilities

[0157] Before performing uplink transmission, the terminal device reports to the network device the number of antenna ports for sending signals that it can support. The number of antenna ports for sending signals that the terminal device can support represents the maximum number of transmission layers for uplink transmission of the terminal device; further, the terminal device can also report to the network device the maximum coherence capability between the various antenna ports of the terminal device.

[0158] Specifically, for a terminal device with two antenna ports, the maximum coherence capability reported by the terminal device includes fully coherent and incoherent; for a terminal device with four antenna ports, the maximum coherence capability reported by the terminal device includes fully coherent, partially coherent, and incoherent; for a terminal device with eight antenna ports, the maximum coherence capability reported by the terminal device includes fully coherent, partially coherent, and incoherent.

[0159] Full coherence indicates that all antenna ports on a terminal device are phase-aligned, allowing phase weighting. This means the device can use all antenna ports to send the same layer of data. Partial coherence indicates that all antenna ports on the terminal device are phase-aligned, allowing phase weighting. However, phase weighting is not achieved between antenna port groups, and each antenna port group contains at least one antenna port. Incoherence indicates that all antenna ports on the terminal device are phase-aligned, allowing phase weighting. This means the device uses one antenna port to send data for one layer and other antenna ports to send data for other layers.

[0160] 6. Transport layer

[0161] In multiple-input multiple-output (MIMO) technology, a transport layer can be viewed as an independently transmittable data stream. To improve spectrum utilization and enhance the data transmission capacity of communication systems, data can be transmitted between network devices and terminal devices across multiple transport layers.

[0162] Currently, the network device performs channel measurement based on the received SRS and obtains the UL channel information of the terminal device, thereby scheduling data for the terminal device based on the UL channel information. The terminal device transmits the PUSCH according to the scheduling of the network device. When the transmission of the SRS on the nearest SRS resource conflicts with the first transmission object or the second transmission object, resulting in the cancellation of part or all of the SRS transmission in the SRS resource, the network device performs channel measurement based on the SRS on the previous SRS resource received and schedules the PUSCH based on the measurement results.

[0163] However, scheduling PUSCH based on the measurement results of the SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance. In addition, because the information that the network device indicates to the terminal device that some or all SRS transmissions in the SRS resource have been canceled is timed with the transmission of the SRS, the terminal device may be instructed to cancel some or all SRS transmissions during the SRS transmission process, further affecting the accuracy of uplink channel acquisition and uplink transmission performance.

[0164] In view of this, the present application provides a reference signal transmission method 400, which can increase the accuracy of uplink channel acquisition and improve uplink transmission performance, as shown in FIG4 .

[0165] In this embodiment, the method is illustrated by taking a terminal device and a network device as the execution subjects of the interaction diagram as examples, but this application does not limit the execution subjects of the interaction diagram. For example, the network device in Figure 4 can also be a chip, chip system, or processor that supports the method that can be implemented by the network device, or a logic module or software that can implement all or part of the network device functions; the terminal device in Figure 4 can also be a chip, chip system, or processor that supports the method that can be implemented by the terminal device, or a logic module or software that can implement all or part of the terminal device functions.

[0166] In this embodiment, the sounding reference signal SRS is used as an example to illustrate the technical solution of the embodiment of the present application. The technical solution of the present application can also be used in other reference signal transmission scenarios for channel measurement.

[0167] In step S410, the network device sends instruction information to the terminal device. Correspondingly, the terminal device receives the instruction information from the network device.

[0168] Specifically, the indication information is used to indicate that SRS transmission on the first symbol in the SRS resource is canceled. The SRS resource can be a resource that the network device is preparing to use to transmit the SRS, or a resource that is currently being used to transmit the SRS. The SRS resource can correspond to a time unit in the time domain, and the time unit is composed of multiple consecutive symbols including the first symbol.

[0169] Exemplarily, the reason why the SRS transmission or reception on the above-mentioned first symbol is canceled may be: the terminal device's transmission of SRS on the first symbol conflicts with the terminal device's transmission of the first transmission object, the second transmission object, or the third transmission object on the first symbol; or the first transmission object, the second transmission object, or the third transmission object has a higher priority on the first symbol, and the transmission of SRS on the first symbol is canceled; or, the transmission of SRS on the above-mentioned first symbol is configured to be zero power. The reason why the transmission or reception of SRS on the above-mentioned first symbol is canceled may also be other, which is not limited in this application.

[0170] The single indication information may indicate that SRS transmission on multiple symbols in the SRS resource is canceled. In this case, the first symbol may be the first symbol indicated by each indication information that SRS transmission is canceled, that is, the earliest symbol in time sequence.

[0171] In step S420, the terminal device sends an SRS to the network device on at least one second symbol. Correspondingly, the network device receives the SRS sent by the terminal device on at least one second symbol.

[0172] Among them, the at least one second symbol is a symbol in at least one continuous symbol corresponding to the first time period in the SRS resource. The first time period is the time period between the first moment and the second moment, the first moment is the moment when the indication information is parsed by the terminal device, and the second moment is the moment corresponding to the starting position of the first symbol. That is, the first time period is the time period from when the terminal device determines that the SRS transmission on the first symbol is canceled to the transmission object on the first symbol to start transmission. Since the second moment is located in the time unit corresponding to the above-mentioned SRS resource, and the first moment is earlier than the second moment in time sequence, the above-mentioned first time period is located in the time unit corresponding to the SRS resource or at least partially overlaps with the time unit corresponding to the SRS resource. Therefore, there is one or multiple continuous symbols in the SRS resource corresponding to the above-mentioned first time period, and at least one second symbol is a symbol among the one or more symbols.

[0173] In addition, the antenna ports for transmitting the SRS corresponding to the at least one second symbol include all antenna ports of the terminal device.

[0174] Through the above method 400, when the SRS transmission on some symbols in the SRS resource is canceled, the terminal device can select at least one second symbol in the SRS resource that can be used to send the SRS based on the timing relationship between the indication information indicating the cancellation of the SRS transmission and the SRS, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one second symbol, thereby improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0175] It should be understood that the above-mentioned “all antenna ports of the terminal device” may be all antenna ports of the terminal device used to send the above-mentioned SRS, and all antenna ports of the terminal device used to send the SRS may be configured by a network device.

[0176] Exemplarily, the number of antenna ports provided by the terminal device may be 1, 2, 4, 8, etc. When the terminal device has 8 antenna ports, the total number of antenna ports of the terminal device may be 8, or may be less than 8, and this application does not impose any limitation on this.

[0177] Exemplarily, the total number of antenna ports of the terminal device is 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. As shown in Figure 5, the OFDM symbol on the SRS resource includes two symbols, the first symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second symbol corresponds to antenna ports 4 to 7 of the terminal device. In the cyclic repetition mode, in chronological order, the first OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the second OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the third OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the fourth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, and so on. The first moment is the moment when the indication information is parsed by the terminal device, which is between the second OFDM symbol and the third OFDM symbol. At this time, the transmission of the corresponding signals on the first OFDM symbol and the second OFDM symbol has been completed (for example, the first OFDM symbol) or canceled (for example, the second OFDM symbol), so the terminal device can no longer change the transmission status of the first OFDM symbol and the second OFDM symbol. The indication information indicates that SRS transmission on the eighth OFDM symbol is canceled, the second moment is the moment when the eighth OFDM symbol begins, and the first time period between the first moment and the second moment corresponds to five consecutive symbols, namely the third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol, and SRS can be transmitted on these five consecutive symbols. Because SRS transmitted on OFDM symbols after the eighth OFDM symbol may not be used, for example, the interruption of transmission of the eighth OFDM symbol causes the phase continuity between the seventh and ninth OFDM symbols to be unable to be guaranteed, the technical solution of method 400 determines that at least one second symbol in the five symbols corresponding to the first time period is used for SRS transmission.

[0178] Among them, at least one second symbol includes all the above two symbols, that is, at least one second symbol includes at least one OFDM symbol corresponding to the 0-3 antenna ports of the terminal device and at least one OFDM symbol corresponding to the 4-7 antenna ports of the terminal device. In addition, when the transmission interruption of the intermediate symbol causes the phase continuity of the previous and next symbols to be unable to be guaranteed, at least one second symbol is continuous. For example, as shown in Figure 5, the third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol and the seventh OFDM symbol can correspond to all 8 antenna ports 0-7 of the terminal device, so at least one second symbol can be the above third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol and the seventh OFDM symbol. Alternatively, at least one second symbol can also be a partial symbol of the above 5 symbols that can correspond to all 8 antenna ports, for example, at least one second symbol can be the fourth OFDM symbol and the fifth OFDM symbol. All combinations are not repeated here.

[0179] Optionally, all antenna ports of the terminal device send the SRS the same number of times on at least one second symbol, or in other words, the number of times each antenna port corresponds to the at least one second symbol is the same.

[0180] It should be understood that "the number of times at least one second symbol corresponds to an antenna port" refers to the number of symbols corresponding to the antenna port in at least one second symbol. Therefore, the above "the number of times at least one second symbol corresponds to each antenna port is the same" means that the number of symbols corresponding to each antenna port in at least one second symbol is the same. For example, it is assumed that the at least one second symbol is the third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol shown in Figure 5. Taking antenna port 0 as an example, since the third OFDM symbol, the fifth OFDM symbol, and the seventh OFDM symbol correspond to antenna ports 0 to 3, there are a total of 3 symbols in the at least one second symbol that can correspond to antenna port 0. Therefore, in this case, the number of times at least one second symbol corresponds to antenna port 0 is 3. The number of times symbols correspond to antenna ports involved below can refer to the above description of "the number of times at least one second symbol corresponds to antenna ports" and will not be repeated below.

[0181] Exemplarily, as shown in FIG5 , it is assumed that the at least one second symbol determined is all 5 symbols corresponding to the first time period. There are 3 first symbols corresponding to antenna ports 0 to 3 of the terminal device, and there are only 2 second symbols corresponding to antenna ports 4 to 7 of the terminal device. Therefore, antenna ports 0 to 3 of the terminal device send SRS 3 times in the third OFDM symbol, the fifth OFDM symbol, and the seventh OFDM symbol, while antenna ports 4 to 7 of the terminal device send SRS 2 times in the fourth OFDM symbol and the sixth OFDM symbol. At this time, the number of times all antenna ports of the terminal device send the first reference signal on at least one second symbol is different, and the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device cannot be guaranteed. Assuming that the at least one second symbol determined is the sixth OFDM symbol and the seventh OFDM symbol, the 0-3 antenna ports of the terminal device send an SRS once in the seventh OFDM symbol, and the 4-7 antenna ports of the terminal device send an SRS once in the sixth OFDM symbol, so that each antenna port is measured the same number of times by the uplink channel, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guaranteeing the uplink transmission performance.

[0182] As described above, there may be multiple results for determining at least one second symbol that meets the condition in at least one continuous symbol corresponding to the first time period in the SRS resource. For this situation, the present application provides two implementation methods for determining one result from the multiple results.

[0183] The first implementation method is: the at least one continuous symbol corresponding to the first time period may include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is the symbol set with the largest number of symbols in the at least one symbol set.

[0184] It should be understood that the at least one consecutive symbol corresponding to the first time period can be considered a first symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the first symbol set, including the first symbol set itself. In other words, there is at least one way to select any one or multiple consecutive elements from the first symbol set, and the result of each selection method corresponds to the at least one symbol set.

[0185] Exemplarily, as shown in Figure 5, assuming that the condition satisfied by at least one second symbol is that the antenna port for transmitting SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device, and the number of times all antenna ports of the terminal device transmit SRS on at least one second symbol is the same. Then the at least one symbol set corresponding to the multiple results may include {third OFDM symbol, fourth OFDM symbol}, {fourth OFDM symbol, fifth OFDM symbol}, {fifth OFDM symbol, sixth OFDM symbol}, {sixth OFDM symbol, seventh OFDM symbol}, {third OFDM symbol, fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol}, {fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol}. The symbol set with the largest number of symbols is {the third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol} or {the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} containing 4 symbols.

[0186] The above method can use the number of at least one second symbol for sending SRS to be as large as possible, so that the terminal device can maintain the advantage of SRS repeated transmission as much as possible, thereby improving the signal-to-noise ratio of the network device receiving SRS, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0187] The second implementation method is: the at least one continuous symbol corresponding to the first time period includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

[0188] It should be understood that the end time of a symbol set refers to the end time of the symbol with the latest end time in the set. In other words, the end time of a symbol set refers to the end time of the period corresponding to the consecutive symbols included in the set.

[0189] Exemplarily, as shown in Figure 5, assuming that the condition satisfied by at least one second symbol is that the antenna port for transmitting SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device, and the number of times all antenna ports of the terminal device transmit SRS on at least one second symbol is the same. Then the at least one symbol set corresponding to the multiple results may include {third OFDM symbol, fourth OFDM symbol}, {fourth OFDM symbol, fifth OFDM symbol}, {fifth OFDM symbol, sixth OFDM symbol}, {sixth OFDM symbol, seventh OFDM symbol}, {third OFDM symbol, fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol}, {fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol}. The symbol set with the latest ending time is {sixth OFDM symbol, seventh OFDM symbol} or {fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol} including the seventh OFDM symbol.

[0190] The above method can make the time for sending at least one second symbol of SRS as close as possible to the time when the network device performs uplink scheduling, so that the network device can perform uplink channel measurement based on the latest SRS of the terminal device as much as possible, improve the accuracy of uplink channel measurement, and ensure uplink transmission performance.

[0191] The above two implementation methods can be used separately or in combination, and this application does not limit this.

[0192] For example, as shown in FIG5 , assuming that the at least one second symbol satisfies the following conditions: the antenna ports corresponding to the at least one second symbol that transmit the SRS include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit the SRS the same number of times on the at least one second symbol, the at least one second symbol ultimately determined is the set of symbols {the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol} having the largest number of symbols and the latest end time.

[0193] Additionally, after determining the at least one second symbol, the terminal device cancels sending SRS on symbols other than the at least one second symbol corresponding to the first time period. In other words, in the first time period, the terminal device only sends SRS to the network device on the at least one second symbol.

[0194] For example, as shown in FIG5 , assuming that the at least one second symbol finally determined is the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol and the seventh OFDM symbol, the terminal device actively cancels the SRS transmission on the third OFDM symbol, thereby saving resources used to transmit SRS and avoiding waste of SRS resources caused by transmitting invalid SRS.

[0195] It should be understood that if there is no at least one second symbol meeting the above conditions in the symbols corresponding to the first time period, the terminal device cancels the transmission of SRS in all symbols corresponding to the first time period. In other words, the terminal device does not send SRS to the network device during the first time period.

[0196] It should be understood that the above method 400 can be repeatedly executed on the same SRS resource. That is, the terminal device may receive multiple different indication messages at different times, with different indication messages indicating that SRS transmission is canceled on different symbols in the same SRS resource. In this case, the terminal device can sequentially execute the method provided in the first aspect for the multiple indication messages received at different times according to the timing of receipt.

[0197] If at least one second symbol that satisfies the above conditions does not exist in at least one consecutive symbol corresponding to the first time period corresponding to a certain indication information, the terminal device may proactively cancel SRS transmission on at least one consecutive symbol corresponding to the first time period corresponding to the indication information. If at least one second symbol that satisfies the above conditions exists in at least one consecutive symbol corresponding to the first time period corresponding to a certain indication information, the embodiments of the present application provide two different processing methods.

[0198] The first processing method is: the terminal device only actively cancels the SRS transmission on at least one consecutive symbol corresponding to the first time period corresponding to the indication information, except for at least one second symbol. In other words, for each indication information in the multiple indication information, the terminal device only determines whether the SRS transmission on the symbol corresponding to the first time period corresponding to one indication information in the multiple indication information is canceled, and does not determine the symbols corresponding to time periods other than the first time period.

[0199] According to the above processing method, the terminal device may eventually send SRS to the network device on multiple segments of continuous symbols in an SRS resource, and the multiple segments of continuous symbols are discontinuous with each other. When the transmission interruption of the intermediate symbol causes the phase continuity of the previous and next symbols to be unable to be guaranteed, the network device can only use the SRS received on a segment of continuous symbols in the above multiple segments of continuous symbols to perform uplink channel measurement. In this case, the network device can use the SRS received on a segment of continuous symbols with the largest number of symbols in the multiple segments of continuous symbols to perform uplink channel measurement, and / or, the network device can use the SRS received on a segment of continuous symbols with the latest end time in the multiple segments of continuous symbols to perform uplink channel measurement. For specific implementation methods, please refer to the embodiments related to the network device below, which will not be repeated here.

[0200] The second processing method is: the terminal device actively cancels the SRS transmission on the third symbol. Specifically, the third symbol is all symbols in the SRS resource corresponding to the second time period except the first symbol and at least one second symbol. The second time period is the time period between the first moment and the end moment of the SRS resource. The end moment of the SRS resource refers to the end moment of the last symbol in the SRS resource. In other words, if there is at least one second symbol that meets the conditions in the symbol corresponding to the first time period corresponding to a certain indication information, then the SRS transmission on the symbol except at least one second symbol in at least one continuous symbol corresponding to the second time period corresponding to the indication information is actively canceled. It means that the SRS transmission on all remaining symbols on the SRS resource after the first time period corresponding to the indication information is actively canceled, that is, the terminal device can no longer repeat the above method 400 for other indication information corresponding to the SRS resource received after the indication information, thereby saving the resources used to transmit the SRS and avoiding the waste of SRS resources caused by transmitting invalid SRS.

[0201] As described above, the above embodiment can be applied to scenarios where the transmission interruption of an intermediate symbol on an SRS resource causes the phase continuity between the two segments before and after the intermediate symbol to be lost. It should be understood that the above embodiment can also be applied to other scenarios, such as scenarios where the transmission interruption of an intermediate symbol on an SRS resource can ensure the phase continuity between the two segments before and after the intermediate symbol, and this application does not make specific limitations.

[0202] The following describes a scenario in which the transmission interruption of an intermediate symbol on an SRS resource can ensure phase continuity between the two symbols before and after the intermediate symbol. Since the SRS sent on discontinuous symbols on the SRS resource can also be used by network devices for uplink channel measurement, a method 600 is described, as shown in Figure 6, which can retain SRS transmission on more symbols.

[0203] In this embodiment, the method is illustrated by taking a terminal device and a network device as the execution subject of the interaction diagram as an example, but this application does not limit the execution subject of the interaction diagram. For example, the network device in Figure 6 can also be a chip, chip system, or processor that supports the method that can be implemented by the network device, or a logic module or software that can implement all or part of the network device functions; the terminal device in Figure 6 can also be a chip, chip system, or processor that supports the method that can be implemented by the terminal device, or a logic module or software that can implement all or part of the terminal device functions.

[0204] In this embodiment, the sounding reference signal SRS is used as an example to illustrate the technical solution of the embodiment of the present application. The technical solution of the present application can also be used in other reference signal transmission scenarios for channel measurement.

[0205] In step S610, the network device sends a plurality of indication information to the terminal device. Correspondingly, the terminal device receives the plurality of indication information from the network device.

[0206] Specifically, the above-mentioned multiple indication information is used to indicate that SRS transmission on multiple symbols in the same SRS resource is canceled. The SRS resource can be a resource that the network device is preparing to use to transmit the SRS, or a resource that is currently being used to transmit the SRS. The SRS resource can correspond to a time unit in the time domain, and the time unit is composed of multiple consecutive symbols. The reason for canceling SRS transmission or reception on multiple symbols can be referred to the reason for canceling SRS transmission or reception on the first symbol in step S410, and will not be repeated here.

[0207] It should be understood that the terminal device may receive each of the multiple indication messages from the network device at different times, and therefore each of the multiple indication messages may be parsed by the terminal device at different times. In other words, the multiple indication messages have a temporal order.

[0208] Specifically, the multiple indication information may include first indication information and at least one second indication information. The first indication information is the latest indication information in the multiple indication information in terms of timing. In other words, the first indication information is the latest indication information received by the terminal device among the multiple indication information. The at least one second indication information is all indication information in the multiple indication information except the first indication information, that is, the indication information received by the terminal device earlier than the first indication information in terms of timing.

[0209] The first indication information is used to indicate that the SRS transmission on the sixth symbol in the above-mentioned SRS resource is canceled, and the at least one second indication information is used to indicate that the SRS transmission on at least one seventh symbol in the above-mentioned SRS resource is canceled.

[0210] In step S620, the terminal device sends an SRS to the network device on at least one fourth symbol and at least one fifth symbol. Correspondingly, the network device receives an SRS from the terminal device on at least one fourth symbol and at least one fifth symbol.

[0211] Among them, the at least one fourth symbol is a symbol in at least one continuous symbol corresponding to the third time period in the SRS resource. The third time period is the time period between the third moment and the fourth moment, the third moment is the moment when the first indication information is parsed by the terminal device, and the fourth moment is the moment corresponding to the starting position of the sixth symbol. That is, the third time period is the time period from when the terminal device determines that the SRS transmission on the sixth symbol is canceled to when the transmission object on the sixth symbol starts transmitting. There is one or multiple consecutive symbols in the SRS resource corresponding to the above-mentioned third time period, and at least one fourth symbol is a symbol among the one or more symbols.

[0212] The at least one fifth symbol is all symbols except at least one seventh symbol among the symbols corresponding to the fourth time period in the SRS resource. The fourth time period is the period between the start time of the SRS resource and the third time, the third time is the time when the first indication information is parsed by the terminal device, and the start time of the SRS resource refers to the start time of the first symbol in the SRS resource. That is, the at least one fifth symbol is all symbols that are not indicated by the indication information to cancel the SRS transmission within the period from the start of the SRS resource to the time when the terminal device determines that the SRS transmission on the sixth symbol is canceled.

[0213] In addition, the antenna ports for transmitting SRS corresponding to the at least one fourth symbol and the at least one fifth symbol include all antenna ports of the terminal device.

[0214] It should be understood that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and at least one fifth symbol include all antenna ports of the terminal device, which means that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and the antenna ports for transmitting SRS corresponding to at least one fifth symbol together include all antenna ports of the terminal device. Since the third moment may be located within the time unit corresponding to the above-mentioned SRS resource, when the terminal device determines that the SRS transmission on the sixth symbol is canceled, there may be SRS that has been transmitted through some symbols in the SRS resource (i.e., the above-mentioned at least one fifth symbol). Since at least one fifth symbol already corresponds to at least some of the ports of all antenna ports of the terminal device, when the phase continuity of at least one fifth symbol and at least one fourth symbol can be guaranteed, at least one fourth symbol only needs to correspond to other ports of all antenna ports of the terminal device.

[0215] Through the above-mentioned method 600, when the transmission interruption of the intermediate symbol does not affect the continuity of the previous and next phases, the terminal device can retain as many as possible at least one fifth symbol on the SRS resources before the moment when the latest received first indication information is parsed, and determine at least one fourth symbol in the resources corresponding to the third time period corresponding to the first indication information, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one fourth symbol and at least one fifth symbol, thereby increasing the number of SRSs that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0216] Exemplarily, the total number of antenna ports of the terminal device is 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. The OFDM symbols on the SRS resource include two symbols, the first symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second symbol corresponds to antenna ports 4 to 7 of the terminal device. As shown in Figure 7, the third moment is the moment when the first indication information is parsed by the terminal device, which is located between the fourth OFDM symbol and the fifth OFDM symbol. The starting moment of the SRS resource is the moment when the first OFDM symbol starts, and the fourth time period between the starting moment of the SRS resource and the third moment corresponds to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol. The SRS transmission on the second OFDM symbol and the fourth OFDM symbol is canceled by at least one second indication information that is earlier in time than the first indication information. In this case, the terminal device retains the SRS transmission on the first OFDM symbol and the third OFDM symbol. That is, the second OFDM symbol and the fourth OFDM symbol are the at least one seventh symbol, and the first OFDM symbol and the third OFDM symbol are the at least one fifth symbol.

[0217] The first indication information indicates that SRS transmission on the eighth OFDM symbol is canceled, the fourth moment is the moment when the eighth OFDM symbol begins, and the third time period between the third moment and the fourth moment corresponds to three consecutive symbols, namely the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol. The terminal device determines the at least one fourth symbol from the three consecutive symbols. Since the first OFDM symbol and the third OFDM symbol correspond to antenna ports 0 to 3 of the terminal device, the at least one fourth symbol may only include symbols corresponding to antenna ports 4 to 7 of the terminal device. For example, the at least one fourth symbol may be the sixth OFDM symbol.

[0218] It should be understood that in the example shown in Figure 7, at least one fourth symbol may also be a symbol including antenna ports 0 to 3 corresponding to the terminal device. For example, at least one fourth symbol may be the fifth OFDM symbol, the sixth OFDM symbol and the seventh OFDM symbol, or any multiple symbols including the sixth OFDM symbol. All combinations are not described here one by one.

[0219] Optionally, all antenna ports of the terminal device send SRS the same number of times on at least one fourth symbol and at least one fifth symbol, or in other words, the number of times each antenna port corresponds to at least one fourth symbol and at least one fifth symbol is the same.

[0220] It should be understood that the aforementioned "all antenna ports transmit the SRS the same number of times on at least one fourth symbol and at least one fifth symbol" means that the sum of the number of times each antenna port transmits the SRS on at least one fourth symbol and at least one fifth symbol is the same. In other words, the sum of the number of times each antenna port transmits the SRS on at least one fourth symbol and at least one fifth symbol is the same.

[0221] For example, as shown in FIG8 , at least one fifth symbol is the second OFDM symbol and the fourth OFDM symbol. In this case, the terminal device has already sent SRS twice through antenna ports 4 to 7, but has not yet sent SRS through antenna ports 0 to 3. Therefore, in order for the terminal device to ultimately send SRS the same number of times through each antenna port, the number of symbols corresponding to antenna ports 0 to 3 in at least one fourth symbol should be two more than the number of symbols corresponding to antenna ports 4 to 7. For example, at least one fourth symbol can be the fifth OFDM symbol and the seventh OFDM symbol. In this case, at least one fourth symbol contains two symbols corresponding to antenna ports 0 to 3, and at least one fifth symbol contains two symbols corresponding to antenna ports 4 to 7. That is, the terminal device has sent SRS twice through antenna ports 0 to 3 and twice through antenna ports 4 to 7 on at least one fourth symbol and at least one fifth symbol. This ensures that each antenna port is measured the same number of times for the uplink channel, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guaranteeing uplink transmission performance.

[0222] It should be understood that due to the limited number of symbols corresponding to the third time period, the number of different symbols corresponding to different antenna ports of the terminal device in the at least one fourth symbol may not meet the above requirements. In this case, when determining the at least one fourth symbol, the terminal device minimizes the difference in the number of times all antenna ports of the terminal device transmit SRS on the at least one fourth symbol and the at least one fifth symbol.

[0223] Exemplarily, as shown in FIG7 , at least one fifth symbol is the first OFDM symbol and the third OFDM symbol. In this case, the terminal device has sent SRS twice through antenna ports 0 to 3, but has not yet sent SRS through antenna ports 4 to 7. The number of symbols corresponding to antenna ports 4 to 7 in at least one fourth symbol is preferably two more than the number of symbols corresponding to antenna ports 0 to 3, but there is at most only one symbol corresponding to antenna ports 4 to 7, which is the sixth OFDM symbol, in the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol. In this case, the terminal device retains as many symbols corresponding to antenna ports 4 to 7 as possible, and cancels the SRS transmission on the symbols corresponding to antenna ports 0 to 3 as possible, so that the at least one fourth symbol finally determined is the sixth OFDM symbol.

[0224] As mentioned above, there may be multiple results for determining at least one fourth symbol that meets the condition in at least one symbol corresponding to the third time period in the SRS resource. For this situation, the present application provides two implementation methods for determining one result from the multiple results.

[0225] The first implementation method is: the at least one continuous symbol corresponding to the third time period may include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one fourth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

[0226] It should be understood that the at least one consecutive symbol corresponding to the third time period can be considered a second symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the second symbol set, including the second symbol set itself. In other words, there is at least one way to select one or more elements from the second symbol set, and the result of each selection method corresponds to the at least one symbol set.

[0227] Exemplarily, as shown in Figure 9, at least one fifth symbol is the second OFDM symbol. Assume that the condition satisfied by at least one fourth symbol is that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and at least one fifth symbol include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit SRS the same number of times on at least one fourth symbol and at least one fifth symbol. Then the at least one symbol set corresponding to the multiple results may include {fifth OFDM symbol}, {seventh OFDM symbol}, {fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol}. Among them, the symbol set with the largest number of symbols is {fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol} containing 3 symbols.

[0228] The above method can use the number of at least one fourth symbol for sending SRS to be as large as possible, so that the terminal device can maintain the advantage of repeated SRS transmission as much as possible, thereby improving the signal-to-noise ratio of the network device receiving SRS, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0229] In a second implementation, the at least one fourth symbol includes S symbols, where S is a positive integer. An end time of each of the at least one fourth symbol is later than an end time of a symbol of the same type in at least one eighth symbol, where the at least one eighth symbol is all symbols of at least one consecutive symbol corresponding to a third time period in the SRS resource, excluding the at least one fourth symbol.

[0230] It should be understood that each of the S symbols corresponds to a different antenna port for transmitting the SRS, and symbols of the same type refer to symbols corresponding to the same antenna port for transmitting the SRS. That is, each of the at least one fourth symbol corresponds to a number of symbols of the same type in the third time period with the latest end time.

[0231] Exemplarily, as shown in FIG8 , it is assumed that the condition satisfied by at least one fourth symbol is that the antenna ports for transmitting SRS corresponding to at least one fourth symbol and at least one fifth symbol include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit SRS the same number of times on at least one fourth symbol and at least one fifth symbol. The OFDM symbols on the SRS resource include two symbols, the first symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second symbol corresponds to antenna ports 4 to 7 of the terminal device. The at least one fourth symbol {the fifth OFDM symbol, the seventh OFDM symbol} finally determined by the terminal device includes two first symbols corresponding to antenna ports 0 to 3 of the terminal device, and these two first symbols are the two first symbols with the latest end times among the first symbols corresponding to the third time period. Although the end time of the fifth OFDM symbol is earlier than that of the sixth OFDM symbol, since the sixth OFDM symbol is the second type of symbol corresponding to the antenna ports 4 to 7 of the terminal device and belongs to a different type of symbol from the fifth OFDM symbol, it is not necessary to consider the timing relationship between the fifth OFDM symbol and the sixth OFDM symbol when determining at least one fourth symbol in an embodiment of the present application.

[0232] The above method can make the time for sending at least one fourth symbol of SRS as close as possible to the time when the network device performs uplink scheduling, so that the network device can perform uplink channel measurement based on the latest SRS of the terminal device as much as possible, improve the accuracy of uplink channel measurement, and ensure uplink transmission performance.

[0233] The above two implementation methods can be used separately or in combination, and this application does not limit this.

[0234] Additionally, after determining at least one fourth symbol, the terminal device cancels sending SRS on symbols other than the at least one fourth symbol corresponding to the third time period. In other words, in the third time period, the terminal device only sends SRS to the network device on the at least one fourth symbol.

[0235] The aforementioned methods 400 and 600 and related embodiments describe that a terminal device determines the symbols on an SRS resource used to transmit an SRS and proactively cancels the SRS transmission on other symbols on the SRS resource, thereby avoiding scenarios where an invalid SRS is transmitted. If there is no invalid SRS in the SRS transmitted by the terminal device to the network device, the network device can directly associate the uplink scheduling with the SRS resource that is closest to the uplink scheduling and receives the SRS, perform channel measurement based on the SRS received on the SRS resource, and schedule the PUSCH based on the measurement results.

[0236] However, in the scenario where there is an invalid SRS in the SRS transmitted by the terminal device to the network device, for example, the terminal device only cancels (dropping) the SRS transmission on the symbol indicated by the indication information and does not actively cancel (cancel) the SRS transmission on other symbols, or as described in the first processing method of the aforementioned method 400, the terminal device sends multiple phase-discontinuous SRSs to the network device on multiple consecutive symbols in the same SRS resource, then the terminal device needs to determine some or all of the symbols of the SRS received from the SRS resource for association with uplink scheduling. The following describes a method 1000 for a network device to determine an SRS resource associated with uplink scheduling, as shown in Figure 10.

[0237] In this embodiment, the method is illustrated by taking a terminal device and a network device as the execution subjects of the interaction diagram as examples, but this application does not limit the execution subjects of the interaction diagram. For example, the network device in Figure 10 can also be a chip, chip system, or processor that supports the method that can be implemented by the network device, or a logic module or software that can implement all or part of the network device functions; the terminal device in Figure 10 can also be a chip, chip system, or processor that supports the method that can be implemented by the terminal device, or a logic module or software that can implement all or part of the terminal device functions.

[0238] In this embodiment, the sounding reference signal SRS is used as an example to illustrate the technical solution of the embodiment of the present application. The technical solution of the present application can also be used in other reference signal transmission scenarios for channel measurement.

[0239] Step S1010: The network device receives an SRS from a terminal device on at least one ninth symbol in an SRS resource. Correspondingly, the terminal device sends an SRS to the network device on at least one ninth symbol in the SRS resource.

[0240] Specifically, the network device receives the SRS sent by the terminal device on the above-mentioned SRS resource, wherein at least one ninth symbol is a symbol in the SRS resource whose SRS transmission has not been canceled by the terminal device. The SRS transmission on symbols other than the at least one ninth symbol on the SRS resource may be instructed to be canceled (dropping) by the terminal device, or it may be actively canceled (cancel) by the terminal device. Among them, the reason why the SRS transmission or reception on symbols other than the at least one ninth symbol on the SRS resource is canceled can refer to the reason why the SRS transmission or reception on the first symbol in step S410 is canceled, and no further details are given here.

[0241] Specifically, the above-mentioned SRS resource may be a resource of the network device after receiving the SRS most recently sent by the terminal device. The SRS resource may correspond to a time unit in the time domain, and the time unit is composed of multiple consecutive symbols.

[0242] Step S1020: The network device associates uplink scheduling with SRS resources.

[0243] Specifically, when there is at least one tenth symbol in the above-mentioned SRS resource, the network device associates the uplink scheduling with the SRS resource. The at least one tenth symbol is a symbol in the at least one ninth symbol. In addition, the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, or the antenna ports corresponding to the at least one tenth symbol include all antenna ports related to the uplink scheduling. In other words, if there is at least one tenth symbol in the symbol of the SRS received in the SRS resource whose corresponding antenna port meets specific conditions, associating the uplink scheduling with the SRS resource means that the network device performs channel measurement based on the SRS received on the above-mentioned at least one tenth symbol, and schedules the PUSCH based on the measurement result.

[0244] It should be understood that the above-mentioned “all antenna ports of the terminal device” may be all antenna ports of the terminal device used to send the above-mentioned SRS, and all antenna ports of the terminal device used to send the SRS may be configured by a network device.

[0245] It should be understood that the antenna ports associated with uplink scheduling refer to the antenna ports used by the network device to schedule the terminal device to transmit the PUSCH, and all antenna ports associated with uplink scheduling may be some or all antenna ports of the terminal device. The antenna ports corresponding to at least one tenth symbol include all antenna ports associated with uplink scheduling, which means that the antenna ports corresponding to at least one tenth symbol include at least all antenna ports associated with uplink scheduling. Therefore, the antenna ports corresponding to at least one tenth symbol may include some or all antenna ports of the terminal device.

[0246] Exemplarily, all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. The OFDM symbols on the SRS resource include two symbols, the first symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second symbol corresponds to antenna ports 4 to 7 of the terminal device. If the network device only needs to schedule the terminal device to transmit PUSCH through its antenna ports 0 to 3, the network device can only use the SRS sent by the terminal device through its antenna ports 0 to 3 for channel measurement. In this case, the above-mentioned "all antenna ports related to uplink scheduling" can be antenna ports 0 to 3 of the terminal device, and at least one tenth symbol can only include the first symbol corresponding to antenna ports 0 to 3 of the terminal device.

[0247] It should be understood that uplink scheduling refers to the scheduling of the physical uplink shared channel (PUSCH) transmitted by the network device to the terminal device. Specifically, the network device performs channel measurement based on the received SRS and obtains the uplink (UL) channel information of the terminal device, thereby scheduling the terminal device to transmit PUSCH based on the UL channel information. Therefore, the network device associates uplink scheduling with the SRS resource, which means that the network device performs channel measurement based on the SRS received on the SRS resource.

[0248] Specifically, when there is at least one tenth symbol meeting the conditions in the SRS resource, the network device associates uplink scheduling with the SRS resource, which means that the network device performs channel measurement based on the SRS received on the at least one tenth symbol.

[0249] The at least one tenth symbol may be part or all of the at least one ninth symbol.

[0250] Optionally, when there is no at least one tenth symbol meeting the condition in the SRS resource, the network device can associate the uplink scheduling with a timing-previous SRS resource meeting the condition.

[0251] Through the above method 1000, when there is at least one tenth symbol in the SRS resource, the network device can associate the uplink scheduling with the SRS resource, so that the network device can measure the uplink channel according to the SRS sent by the terminal device through at least one tenth symbol, thereby increasing the number of SRSs that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0252] Optionally, when the antenna ports corresponding to at least one tenth symbol include all antenna ports of the terminal device, the number of times all antenna ports of the terminal device send SRS on at least one second symbol is the same, or in other words, the number of times each antenna port corresponds to at least one second symbol is the same.

[0253] Alternatively, when the antenna ports corresponding to at least one tenth symbol include all antenna ports related to uplink scheduling, the number of times all antenna ports related to uplink scheduling send SRS on at least one second symbol is the same, or in other words, the number of times each antenna port related to uplink scheduling corresponds to at least one second symbol is the same.

[0254] The above method can enable the network device to measure the uplink channel of each antenna port the same number of times, thereby ensuring the accuracy of the uplink channel measurement corresponding to each antenna port and guaranteeing the uplink transmission performance.

[0255] As previously described, since the SRS transmission on some symbols may be canceled when the terminal device sends the SRS to the network device, there may be an SRS transmission interruption between at least one ninth symbol. In this case, the present application provides two different processing methods for the two different situations: the transmission interruption of the intermediate symbol may affect the continuity of the previous and next phases, and the transmission interruption of the intermediate symbol may not affect the continuity of the previous and next phases.

[0256] The first processing method is: when the transmission interruption of the middle symbol does not affect the continuity of the preceding and following phases, the at least one tenth symbol can be all or part of the at least one ninth symbol. In this case, the present application provides two implementation methods.

[0257] The first implementation method is: the above-mentioned at least one ninth symbol includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and the above-mentioned at least one tenth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

[0258] It should be understood that all of the at least one ninth symbol can be considered a third symbol set, where each symbol is an element of the symbol set. The at least one symbol set can be a subset of the third symbol set, including the third symbol set itself. In other words, there is at least one way to select any one or more elements from the third symbol set, and the result of each selection corresponds to the at least one symbol set.

[0259] Exemplarily, as shown in FIG11 , the at least one ninth symbol is the second OFDM symbol, the third OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol. That is, the network device receives the SRS on the second OFDM symbol, the third OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol in the SRS resource. Within the range of the at least one ninth symbol, the network device can determine the symbol set with the largest number of symbols, {the second OFDM symbol, the third OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, and the seventh OFDM symbol}, which includes all five symbols, as the at least one tenth symbol, thereby performing uplink channel measurement based on the SRS received on the at least one tenth symbol.

[0260] Assuming that the condition satisfied by the at least one tenth symbol also includes that the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, the network device can determine the symbol set with the largest number of symbols, including 4 symbols, {the second OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} or {the second OFDM symbol, the third OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} or {the second OFDM symbol, the third OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol} as the at least one tenth symbol.

[0261] The above method can make the number of at least one tenth symbol associated with uplink scheduling as large as possible, so that the number of repetitions of the SRS used by the network device for channel measurement is as large as possible, thereby improving the signal-to-noise ratio of the SRS used by the network device for channel measurement, improving the accuracy of uplink channel measurement, and ensuring uplink transmission performance.

[0262] The second implementation method is: the above-mentioned at least one tenth symbol includes S types of symbols, S is a positive integer, the end time of each symbol in the above-mentioned at least one tenth symbol is later than the end time of the same symbol in at least one eleventh symbol, and the at least one eleventh symbol is all symbols in at least one ninth symbol except at least one tenth symbol.

[0263] It should be understood that each of the S symbols corresponds to a different antenna port for transmitting the SRS, and symbols of the same type refer to symbols corresponding to the same antenna port for transmitting the SRS. That is, each of the at least one tenth symbol is a number of symbols of the same type in the at least one ninth symbol with the latest end time.

[0264] For example, as shown in FIG11 , assuming that the at least one tenth symbol satisfies the following conditions: the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit the SRS the same number of times in the at least one tenth symbol, the network device can determine the symbol set {sixth OFDM symbol, seventh OFDM symbol} or {second OFDM symbol, fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol} as the at least one tenth symbol.

[0265] The above method can make the time of at least one tenth symbol associated with the uplink scheduling as close as possible to the time of the uplink scheduling, so that the network equipment can perform uplink channel measurement based on the latest SRS of the terminal equipment as much as possible, improve the accuracy of the uplink channel measurement, and ensure the uplink transmission performance.

[0266] The above two implementation methods can be used separately or in combination, and this application does not limit this.

[0267] For example, as shown in FIG11 , assuming that the at least one tenth symbol satisfies the following conditions: the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit the SRS the same number of times on the at least one tenth symbol. By combining the above two implementations, the network device can ultimately determine the symbol set {the second OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} as the at least one tenth symbol.

[0268] The second processing method is: when the transmission interruption of the intermediate symbol affects the continuity of the previous and next phases, the above-mentioned at least one ninth symbol can correspond to N time periods on the SRS resource, each of the N time periods can correspond to one or multiple consecutive symbols, and the above-mentioned at least one tenth symbol is a symbol among the symbols corresponding to the fifth time period in the N time periods, and N is a positive integer.

[0269] Specifically, the fifth time period may be a time period corresponding to the largest number of symbols among the N time periods, and / or the fifth time period may be a time period having the latest ending time among the N time periods.

[0270] As an example, as shown in Figure 12, due to the interruption of SRS transmission on the fifth OFDM symbol, at least one ninth symbol may correspond to two time periods. Time period #1 corresponds to the first, second, third, and fourth OFDM symbols, while time period #2 corresponds to the sixth, seventh, and eighth OFDM symbols. The network device may determine at least one tenth symbol from the first, second, third, and fourth OFDM symbols corresponding to time period #1, which has a larger number of corresponding symbols, or from the sixth, seventh, and eighth OFDM symbols corresponding to time period #2, which ends later.

[0271] In this case, the present application also provides two implementation methods for determining at least one tenth symbol from the symbols corresponding to the fifth time period.

[0272] The first implementation method is: the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the above-mentioned at least one tenth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

[0273] It should be understood that the symbols corresponding to the fifth time period can be considered a fourth symbol set, where each symbol is an element in the symbol set. The at least one symbol set can be a subset of the fourth symbol set, including the fourth symbol set itself. In other words, there is at least one way to select any one or multiple consecutive elements from the fourth symbol set, and the result of each selection corresponds to the at least one symbol set.

[0274] For example, as shown in FIG12 , assuming that the fifth time period is time period #2, the network device can determine the symbol set {the sixth OFDM symbol, the seventh OFDM symbol, the eighth OFDM symbol} that includes all three symbols and has the largest number of symbols as the at least one tenth symbol. If the at least one tenth symbol also satisfies the condition that the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, the network device can determine the symbol set {the sixth OFDM symbol, the seventh OFDM symbol} or {the seventh OFDM symbol, the eighth OFDM symbol} that includes two symbols as the at least one tenth symbol.

[0275] The above method can make the number of at least one tenth symbol in the fifth time period as large as possible, so that the number of repetitions of the SRS used by the network device for channel measurement is as large as possible, thereby improving the signal-to-noise ratio of the SRS used by the network device for channel measurement, improving the accuracy of the uplink channel measurement, and ensuring the uplink transmission performance.

[0276] The second implementation method is: the symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the above-mentioned at least one tenth symbol is the symbol set with the latest end time in the at least one symbol set.

[0277] For example, as shown in FIG12 , assuming the fifth time period is time period #2, the network device can determine the symbol set with the largest number of symbols, including all three symbols, {the seventh OFDM symbol, the eighth OFDM symbol} or {the sixth OFDM symbol, the seventh OFDM symbol, the eighth OFDM symbol}, as the at least one tenth symbol. If the at least one tenth symbol also satisfies the condition that the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, the network device can determine {the seventh OFDM symbol, the eighth OFDM symbol} as the at least one tenth symbol.

[0278] The above method can make the time of at least one tenth symbol in the fifth time period as close as possible to the uplink scheduling time, so that the network equipment can perform uplink channel measurement based on the latest SRS of the terminal equipment as much as possible, improve the accuracy of uplink channel measurement, and ensure uplink transmission performance.

[0279] The above two implementation methods can be used separately or in combination, and this application does not limit this.

[0280] For example, as shown in Figure 12, assuming the fifth time period is time period #2, and the at least one tenth symbol satisfies the following conditions: the antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, and all antenna ports of the terminal device transmit the same number of SRSs in the at least one tenth symbol. By combining the above two implementations, the network device can ultimately determine the symbol set {seventh OFDM symbol, eighth OFDM symbol} as the at least one tenth symbol.

[0281] It should be understood that the method 400 or method 600 for determining the symbols for transmitting SRS on SRS resources provided in the embodiments of the present application can be executed separately; the method 1000 for determining SRS resources associated with uplink scheduling can also be executed separately; or, the method 400 or method 600 can also be executed in conjunction with the method 1000, and the present application does not make any specific limitations on this.

[0282] As an example, the scenario in which method 400 and method 1000 are jointly performed may be the scenario described in the first processing method of method 400 above. In this case, the terminal device may determine, according to method 400, multiple consecutive symbols in the SRS resource for transmitting an SRS to the network device, where the multiple consecutive symbols are discontinuous. After receiving an SRS from the multiple consecutive symbols in the SRS resource, the network device may determine, according to method 1000, a segment of the multiple consecutive symbols and perform uplink channel measurement based on the SRS received on the segment of consecutive symbols.

[0283] As another example, the scenario in which method 600 and method 1000 are jointly executed may be a scenario in which the number of at least one fourth symbol in the symbols corresponding to the third time period described in method 600 above is limited, resulting in a scenario in which the requirement that each antenna port sends the same number of SRSs cannot be met. In this case, the terminal device may determine at least one fourth symbol and at least one fifth symbol in the SRS resource according to method 600 for transmitting the SRS to the network device. After the network device receives the SRS from at least one fourth symbol and at least one fifth symbol in the above-mentioned SRS resource, it may determine at least one tenth symbol from the above-mentioned at least one fourth symbol and at least one fifth symbol according to method 1000, so that each antenna port sends the same number of SRSs on at least one tenth symbol, and performs uplink channel measurement based on the SRS received on at least one tenth symbol.

[0284] Finally, the device embodiment of the embodiment of the present application is introduced.

[0285] To implement the various functions of the methods provided herein, both terminal devices and network devices may include hardware structures and / or software modules, with the aforementioned functions implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0286] Figure 13 is a schematic block diagram of a communication device 1300 according to an embodiment of the present application. The communication device 1300 includes a processor 1310 and a communication interface 1320, which may be interconnected via a bus 1330. The communication device 1300 may be a terminal device or a network device.

[0287] Optionally, the communication device 1400 may further include a memory 1340. The memory 1340 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (CD-ROM). The memory 1240 is used to store relevant instructions and data.

[0288] The processor 1310 may be one or more central processing units (CPUs). In the case where the processor 1310 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0289] When the communication apparatus 1300 is a terminal device, illustratively, the communication apparatus 1300 is configured to perform the following operations: sending an SRS to a network device, etc.

[0290] When the communication device 1300 is a network device, illustratively, the communication device 1300 is configured to perform the following operations: receiving an SRS from a terminal device, etc.

[0291] The above contents are merely exemplary descriptions. When the communication device 1300 is a terminal device / network device, it will be responsible for executing the methods or steps related to the terminal device / network device in the above method embodiments.

[0292] The above description is merely exemplary. For details, please refer to the contents of the above method embodiments. The implementation of each operation in FIG13 may also correspond to the corresponding description of the method embodiments shown in FIG4 to FIG12.

[0293] Figure 14 is a schematic block diagram of a communication device 1400 according to an embodiment of the present application. Communication device 1400 may be a terminal device or a network device, or a chip or module within the terminal device or network device, configured to implement the methods described in the above embodiments. Communication device 1400 includes a transceiver unit 1410. Optionally, communication device 1400 also includes a processing unit 1420. The following provides an exemplary description of transceiver unit 1410 and processing unit 1420.

[0294] Transceiver unit 1410 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform the transmitting operation of communication device 1400, and the receiving unit is used to perform the receiving operation of communication device 1400. For ease of description, this embodiment of the application combines the transmitting unit and the receiving unit into a single transceiver unit. This is described here as a unified description and will not be repeated later.

[0295] When the communication device 1400 is a terminal device, exemplarily, the transceiver unit 1410 is used to receive indication information and send SRS on at least one second symbol; or the transceiver unit 1410 is used to receive multiple indication information and send SRS on at least one fourth symbol and at least one fifth symbol.

[0296] When the communication apparatus 1400 is a network device, illustratively, the transceiver unit 1410 is configured to receive an SRS on at least one ninth symbol in an SRS resource, and the processing unit 1420 is configured to associate uplink scheduling with the SRS resource.

[0297] The above contents are merely exemplary descriptions. When the communication device 1400 is a terminal device or a network device, it will be responsible for executing the methods or steps related to the terminal device or the network device in the above method embodiments.

[0298] Optionally, the communication device 1400 further includes a storage unit 1430, which is used to store a program or code for executing the aforementioned method.

[0299] The device embodiments shown in Figures 13 and 14 are used to implement the contents described in Figures 4 to 12. The specific execution steps and methods of the devices shown in Figures 13 and 14 can refer to the contents described in the above method embodiments.

[0300] Figure 15 is a schematic block diagram of a communication device 1500 according to an embodiment of the present application. The communication device 1500 is used to implement the functions of a terminal device / network device. The communication device 1500 may be a chip in the terminal device / network device.

[0301] Communication device 1500 includes an input / output interface 1520 and a processor 1510. Input / output interface 1520 may be an input / output circuit. Processor 1510 may be a signal processor, a chip, or other integrated circuit capable of implementing the method of the present application. Input / output interface 1520 is used for inputting or outputting signals or data.

[0302] For example, when the communication device 1500 is a terminal device, the input-output interface 1520 is used to receive indication information and send SRS on at least one second symbol; or the input-output interface 1520 is used to receive multiple indication information and send SRS on at least one fourth symbol and at least one fifth symbol.

[0303] For example, when the communication apparatus 1500 is a network device, the input / output interface 1520 is configured to receive an SRS on at least one ninth symbol in an SRS resource. The processor 1510 is configured to associate uplink scheduling with the SRS resource.

[0304] In one possible implementation, the processor 1510 implements the functions implemented by the terminal device or the network device by executing instructions stored in the memory.

[0305] Optionally, the communication device 1500 further includes a memory.

[0306] Optionally, the processor and memory are integrated together.

[0307] Optionally, the memory is outside the communication device 1500 .

[0308] In one possible implementation, the processor 1510 may be a logic circuit, which inputs / outputs messages or signals through the input / output interface 1520. The logic circuit may be a signal processor, a chip, or other integrated circuit that can implement the method of the embodiment of the application.

[0309] The above description of the communication device 1500 is merely an exemplary description. The communication device 1500 can be used to execute the method described in the above embodiments. For details, please refer to the description of the above method embodiments, which will not be repeated here.

[0310] The present application also provides a chip, including a processor, for calling and executing instructions stored in a memory from the memory, so that a communication device equipped with the chip executes the methods in the above examples.

[0311] The present application also provides a chip, comprising: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is configured to execute code in a memory. When the code is executed, the processor is configured to execute the methods in the above examples. Optionally, the chip also includes a memory, which is configured to store computer programs or code.

[0312] The present application also provides a processor for coupling with a memory, and for executing the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0313] The present application provides a computer program product comprising instructions. When the computer program product is run on a computer, the method of the aforementioned embodiment is implemented.

[0314] The present application also provides a computer program. When the computer program is executed in a computer, the method of the aforementioned embodiment is implemented.

[0315] The present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0316] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0317] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0318] In the several embodiments provided in this application, 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 units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0319] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the technical solutions of the embodiments of the present application.

[0320] 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.

[0321] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of each method embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0322] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: receiving indication information, where the indication information is used to indicate that SRS transmission on a first symbol in an SRS resource is cancelled; The SRS is sent on at least one second symbol, the at least one second symbol is a symbol in at least one continuous symbol corresponding to a first time period in the SRS resource, the first time period is a time period between a first moment and a second moment, the first moment is a moment when the indication information is parsed by the terminal device, the second moment is a moment corresponding to a starting position of the first symbol, and the antenna port for sending the SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device.

2. The method according to claim 1, characterized in that The number of times that all antenna ports of the terminal device send the SRS on the at least one second symbol is the same.

3. The method according to claim 1 or 2, characterized in that: At least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is a symbol set with the largest number of symbols in the at least one symbol set.

4. The method according to any one of claims 1 to 3, characterized in that At least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: Cancel sending the SRS on the third symbol, wherein the third symbol is all symbols in the SRS resource corresponding to the second time period except the first symbol and the at least one second symbol, and the second time period is the time period between the first moment and the end moment of the SRS resource.

6. A communication method, characterized in that: include: receiving a plurality of indication information, where the plurality of indication information is used to indicate that SRS transmission on a plurality of symbols in an SRS resource is cancelled; The SRS is sent on at least one fourth symbol and at least one fifth symbol, the at least one fourth symbol is a symbol in at least one continuous symbol corresponding to a third time period in the SRS resource, the third time period is a time period between a third moment and a fourth moment, the third moment is a moment when the first indication information is parsed by the terminal device, the fourth moment is a moment corresponding to the starting position of the sixth symbol, the first indication information is an indication information received latest among the multiple indication information, the sixth symbol is a symbol indicated by the first indication information that the SRS sending is canceled and the at least one fifth symbol is all symbols except at least one seventh symbol among the symbols corresponding to the fourth time period in the SRS resource, the fourth time period is a time period between the starting moment of the SRS resource and the third moment, the at least one seventh symbol is a symbol indicated by at least one second indication information that the SRS sending is canceled and the at least one second indication information is all indication information among the multiple indication information except the first indication information, and the antenna ports for sending the SRS corresponding to the at least one fourth symbol and the at least one fifth symbol include all antenna ports of the terminal device.

7. The method according to claim 6, characterized in that The number of times that all antenna ports of the terminal device transmit the SRS on the at least one fourth symbol and the at least one fifth symbol is the same.

8. The method according to claim 6 or 7, characterized in that: At least one continuous symbol corresponding to the third time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and the at least one fourth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

9. The method according to any one of claims 6 to 8, characterized in that The at least one fourth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending the SRS, S is a positive integer, the end time of each symbol in the at least one fourth symbol is later than the end time of the same symbol in at least one eighth symbol, the antenna ports for sending the SRS corresponding to the same symbols are the same, and the at least one eighth symbol is all symbols of at least one continuous symbol corresponding to the third time period in the SRS resource except the at least one fourth symbol.

10. A communication method, characterized in that: include: receiving an SRS on at least one ninth symbol in an SRS resource, wherein the SRS resource includes at least one tenth symbol, and the at least one tenth symbol is a symbol in the at least one ninth symbol; Associating uplink scheduling with the SRS resource; The antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, or the antenna ports corresponding to the at least one tenth symbol include all antenna ports related to the uplink scheduling.

11. The method according to claim 10, characterized in that The number of times that all antenna ports of the terminal device send the SRS on the at least one tenth symbol is the same.

12. The method according to claim 10 or 11, characterized in that: The at least one ninth symbol includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and the at least one tenth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

13. The method according to any one of claims 10 to 12, characterized in that The at least one tenth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending the SRS, S is a positive integer, and the end time of each symbol in the at least one tenth symbol is later than the end time of the same symbol in at least one eleventh symbol, and the at least one eleventh symbol is all the symbols in the at least one ninth symbol except the at least one tenth symbol.

14. The method according to claim 10 or 11, characterized in that: The at least one ninth symbol corresponds to N time periods on the SRS resource, each of the N time periods corresponds to one or multiple consecutive symbols, the at least one tenth symbol is at least one symbol of the one or multiple consecutive symbols corresponding to the fifth time period in the N time periods, and N is a positive integer. The fifth time period is a time period with the largest number of corresponding symbols among the N time periods, and / or the fifth time period is a time period with the latest ending time among the N time periods.

15. The method according to claim 14, characterized in that The symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the at least one tenth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

16. The method according to claim 14 or 15, characterized in that The symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the at least one tenth symbol is a symbol set with the latest end time in the at least one symbol set.

17. A communication device, characterized in that: include: A receiving unit, configured to receive indication information, where the indication information is used to indicate that SRS transmission on a first symbol in an SRS resource is cancelled; A sending unit is used to send the SRS on at least one second symbol, where the at least one second symbol is a symbol in at least one continuous symbol corresponding to a first time period in the SRS resource, where the first time period is a time period between a first moment and a second moment, where the first moment is a moment when the indication information is parsed by a terminal device, and the second moment is a moment corresponding to a starting position of the first symbol, and the antenna port for sending the SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device.

18. The device according to claim 17, characterized in that The number of times that all antenna ports of the terminal device send the SRS on the at least one second symbol is the same.

19. The device according to claim 17 or 18, characterized in that At least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is a symbol set with the largest number of symbols in the at least one symbol set.

20. The device according to any one of claims 17 to 19, characterized in that At least one continuous symbol corresponding to the first time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or multiple continuous symbols, and the at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

21. The device according to any one of claims 17 to 20, characterized in that The device also includes a processing unit, configured to: Cancel sending the SRS on the third symbol, wherein the third symbol is all symbols in the SRS resource corresponding to the second time period except the first symbol and the at least one second symbol, and the second time period is the time period between the first moment and the end moment of the SRS resource.

22. A communication device, characterized in that: include: A receiving unit, configured to receive a plurality of indication information, wherein the plurality of indication information is used to indicate that SRS transmission on a plurality of symbols in an SRS resource is cancelled; A sending unit, configured to send the SRS on at least one fourth symbol and at least one fifth symbol, wherein the at least one fourth symbol is a symbol in at least one continuous symbol corresponding to a third time period in the SRS resource, the third time period is a time period between a third moment and a fourth moment, the third moment is a moment when the first indication information is parsed by the terminal device, the fourth moment is a moment corresponding to the starting position of the sixth symbol, the first indication information is an indication information received latest among the multiple indication information, the sixth symbol is a symbol of SRS sending being cancelled indicated by the first indication information, the at least one fifth symbol is all symbols except at least one seventh symbol among the symbols corresponding to the fourth time period in the SRS resource, the fourth time period is a time period between the starting moment of the SRS resource and the third moment, the at least one seventh symbol is a symbol of SRS sending being cancelled indicated by at least one second indication information, The at least one second indication information is all the indication information among the multiple indication information except the first indication information, and the antenna ports for sending the SRS corresponding to the at least one fourth symbol and the at least one fifth symbol include all antenna ports of the terminal device.

23. The device according to claim 22, characterized in that The number of times that all antenna ports of the terminal device transmit the SRS on the at least one fourth symbol and the at least one fifth symbol is the same.

24. The device according to claim 22 or 23, characterized in that At least one continuous symbol corresponding to the third time period in the SRS resource includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and the at least one fourth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

25. The device according to any one of claims 22 to 24, characterized in that The at least one fourth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending the SRS, S is a positive integer, the end time of each symbol in the at least one fourth symbol is later than the end time of the same symbol in at least one eighth symbol, the antenna ports for sending the SRS corresponding to the same symbols are the same, and the at least one eighth symbol is all symbols of at least one continuous symbol corresponding to the third time period in the SRS resource except the at least one fourth symbol.

26. A communication device, characterized in that: include: a receiving unit, configured to receive an SRS on at least one ninth symbol in an SRS resource, wherein the SRS resource includes at least one tenth symbol, and the at least one tenth symbol is a symbol in the at least one ninth symbol; A processing unit, configured to associate uplink scheduling with the SRS resource; The antenna ports corresponding to the at least one tenth symbol include all antenna ports of the terminal device, or the antenna ports corresponding to the at least one tenth symbol include all antenna ports related to the uplink scheduling.

27. The device according to claim 26, characterized in that The number of times that all antenna ports of the terminal device send the SRS on the at least one tenth symbol is the same.

28. The device according to claim 26 or 27, characterized in that The at least one ninth symbol includes at least one symbol set, each symbol set in the at least one symbol set includes one or more symbols, and the at least one tenth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

29. The device according to any one of claims 26 to 28, characterized in that The at least one tenth symbol includes S types of symbols, each of the S types of symbols corresponds to a different antenna port for sending the SRS, S is a positive integer, and the end time of each symbol in the at least one tenth symbol is later than the end time of the same symbol in at least one eleventh symbol, and the at least one eleventh symbol is all the symbols in the at least one ninth symbol except the at least one tenth symbol.

30. The device according to claim 26 or 27, characterized in that The at least one ninth symbol corresponds to N time periods on the SRS resource, each of the N time periods corresponds to one or multiple consecutive symbols, the at least one tenth symbol is a symbol among the symbols corresponding to the fifth time period in the N time periods, and N is a positive integer. The fifth time period is a time period with the largest number of corresponding symbols among the N time periods, and / or the fifth time period is a time period with the latest ending time among the N time periods.

31. The device according to claim 30, characterized in that The symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the at least one tenth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

32. The device according to claim 30 or 31, characterized in that The symbols corresponding to the fifth time period include at least one symbol set, each symbol set in the at least one symbol set includes one or multiple consecutive symbols, and the at least one tenth symbol is a symbol set with the latest end time in the at least one symbol set.

33. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to cause the communication device to perform the method according to any one of claims 1 to 5 by executing a computer program or an instruction.

34. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to cause the communication device to perform the method according to any one of claims 6 to 9 by executing a computer program or an instruction.

35. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to cause the communication device to perform the method according to any one of claims 10 to 16 by executing a computer program or an instruction.

36. The communication device according to any one of claims 33 to 35, characterized in that: The communication device further comprises a memory for storing the computer program or instructions.

37. The communication device according to any one of claims 33 to 35, characterized in that: The communication device further comprises a communication interface, and the communication interface is used for inputting and / or outputting signals.

38. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program or instruction. When the computer program or instruction is executed on a computer, so that the method of any one of claims 1 to 5 is performed; or, so that the method of any one of claims 6 to 9 is performed; or, The method according to any one of claims 10 to 16 is performed.

39. A computer program product, characterized in that Contains instructions that, when executed on a computer, so that the method of any one of claims 1 to 5 is performed; or, so that the method of any one of claims 6 to 9 is performed; or, The method according to any one of claims 10 to 16 is performed.

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