Communication method and device

Abstract

The present application relates to the technical field of communications, and provides a communication method and apparatus, the method comprising: a terminal device receiving indication information, the indication information being used for indicating that SRS transmission on a first symbol in an SRS resource is cancelled; the terminal equipment sends 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 analyzed by the terminal equipment, and the second moment is a moment when the indication information is analyzed by the terminal equipment. The second moment is the moment corresponding to the initial position of the first symbol, and the antenna ports for sending the SRS corresponding to the at least one second symbol comprise all antenna ports of the terminal equipment. According to the communication method provided by the embodiment of the invention, the symbols used for sending the SRS in the SRS resources can be selected based on the sequential relationship, so that the accuracy of uplink channel acquisition is improved, and the uplink transmission performance is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and more specifically, to a communication method and device. Background Art

[0002] Currently, network equipment performs channel measurement based on the received sounding reference signal (SRS) and obtains the uplink channel information of the terminal equipment, thereby scheduling data for the terminal equipment according to the uplink channel information, and the terminal equipment transmits the physical uplink control channel (PUSCH) according to the scheduling of the network equipment. When the transmission of 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 equipment performs channel measurement based on the SRS received on the previous SRS resource, and schedules PUSCH based on the measurement results.

[0003] However, scheduling PUSCH based on the measurement result of SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance. In addition, since the information that the network device indicates that the transmission of part or all of the SRS in the SRS resource of the terminal device is canceled has a timing relationship with the transmission of the SRS, the terminal device may be instructed that the transmission of part or all of the SRS is canceled during the SRS transmission process, which further affects the accuracy of uplink channel acquisition and uplink transmission performance. Summary of the invention

[0004] The embodiments of the present application provide a communication method and apparatus, which 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.

[0005] 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 the present application does not limit this.

[0006] 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 in the SRS resource corresponding to a first time period, 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.

[0007] Specifically, the reason why the transmission of the SRS on the above-mentioned first symbol is canceled 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 why the transmission of the SRS on the above-mentioned first symbol is canceled may also be: the priority of the terminal device to send the SRS on the above-mentioned at least one symbol is lower than the priority of the terminal device to send the first transmission object on the above-mentioned at least one symbol; or, the reason why the transmission of the SRS on the above-mentioned first symbol is canceled may also be: the transmission of the terminal device on the above-mentioned first symbol is configured as zero power, etc. The reason why the above-mentioned first symbol is canceled may also be other reasons, which are not limited in the present application.

[0008] Exemplarily, the first transmission object may be a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), etc., used to carry a hybrid automatic repeat request affirmative acknowledgement (HARQ-ACK) or a positive scheduling request (positive SR) or a rank indicator (RI) or a channel state information reference signal resource indicator (CRI) or an SSB resource indicator (SS / PBCH block resource indicator, SSBRI).

[0009] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason for canceling the sending of SRS on the first symbol may be: the periodic or semi-persistent sending of SRS by the terminal device on the first symbol conflicts with or overlaps with the sending of the second transmission object by the terminal device on the first symbol; or, the reason for canceling the sending of SRS on the first symbol may also be: the priority of the periodic or semi-persistent sending 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 sending 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 the present application.

[0010] Exemplarily, the second transmission object may be a PUSCH for carrying aperiodic CSI.

[0011] Alternatively, the terminal device sends SRS periodically. The reason for canceling the sending of SRS on the first symbol may be: the periodic sending of SRS by the terminal device on the first symbol conflicts with or overlaps with the sending of the third transmission object by the terminal device on the first symbol; or, the reason for canceling the sending of SRS on the first symbol may also be: the priority of the periodic sending of SRS by the terminal device on at least one symbol is lower than the priority of the third transmission object sent by the terminal device on at least one symbol; or, the reason for canceling the sending 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 the present application.

[0012] Exemplarily, the third transmission object may be a PUSCH used to carry semi-persistent CSI.

[0013] 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, which will not be repeated below.

[0014] 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 the present application.

[0015] Specifically, the "all antenna ports of the terminal device" involved in the present application 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 the network device. The "all antenna ports of the terminal device" appearing below can be interpreted similarly and will not be repeated below.

[0016] 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 will cause the phase continuity between the two segments before and after the middle symbol to be unable to be guaranteed. The above technical solution can also be applied to other scenarios, such as the scenario where the transmission interruption of the middle symbol on the SRS resource can ensure the phase continuity between the two segments before and after the middle symbol, which is not specifically limited in this application.

[0017] 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 uplink channel acquisition and ensuring uplink transmission performance.

[0018] In combination with the first aspect, in some 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.

[0019] Alternatively, the number of times at least one second symbol corresponds to each antenna port is the same.

[0020] 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. The number of times symbols correspond to antenna ports involved below can all refer to the above description of "the number of times at least one second symbol corresponds to an antenna port", which will not be repeated below.

[0021] According to the above technical solution, each antenna port among all the antenna ports of the terminal device sends SRS on the above-mentioned 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.

[0022] 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.

[0023] It should be understood that at least one continuous symbol corresponding to the first time period in the above SRS resource can be regarded as a first symbol set, wherein each symbol is an element in the symbol set. The above 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 method of taking any one or multiple consecutive elements from the first symbol set, wherein the result of each method corresponds to the above at least one symbol set.

[0024] 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 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.

[0025] 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.

[0026] 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 uplink channel measurement and ensuring uplink transmission performance.

[0027] 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, the third symbol being all symbols in the SRS resource corresponding to a second time period except the first symbol and at least one second symbol, and the second time period being the time period between the first moment and the end moment of the SRS resource.

[0028] It should be understood that the method provided in the first aspect 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 can be executed in sequence according to the timing of reception. If there is no at least one second symbol that satisfies 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 satisfies 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 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, for other indication information corresponding to the SRS resource received after the indication information, the terminal device may no longer repeat the method provided in the first aspect.

[0029] 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.

[0030] 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 implement all or part of the terminal device functions, and the present application does not limit this.

[0031] The method includes: a terminal device receives a plurality of indication information, the plurality of indication information being used to indicate that SRS transmission on a plurality of symbols in an SRS resource is canceled; the terminal device transmits SRS on at least one fourth symbol and at least one fifth symbol, the at least one fourth symbol being a symbol in at least one continuous symbol in the SRS resource corresponding to a third time period, the third time period being a time period between a third moment and a fourth moment, the third moment being a moment when the first indication information is parsed by the terminal device, the fourth moment being a moment corresponding to a starting position of a sixth symbol, the first indication information being the latest indication information received among the plurality of indication information, the sixth symbol being a symbol for which SRS transmission is canceled indicated by the first indication information, the at least one fifth symbol being all symbols except at least one seventh symbol among symbols in the SRS resource corresponding to the fourth time period, the fourth time period being a time period between a starting moment of the SRS resource and the third moment, the at least one seventh symbol being a symbol for which SRS transmission is canceled indicated by at least one second indication information, the at least one second indication information being all indication information except the first indication information among the plurality of indication information, and the antenna ports for transmitting SRS corresponding to the at least one fourth symbol and the at least one fifth symbol including all antenna ports of the terminal device.

[0032] Specifically, the reason why the transmission of the SRS on the sixth symbol and / or at least one seventh symbol is canceled 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 why the transmission of the SRS on the sixth symbol and / or at least one seventh symbol is canceled may also be: the priority of the terminal device to send the SRS on the at least one symbol is lower than the priority of the terminal device to send the first transmission object on the at least one symbol; or, the reason why the transmission of the SRS on the sixth symbol and / or at least one seventh symbol is canceled 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 why the sixth symbol and / or at least one seventh symbol is canceled may also be other reasons, which are not limited in the present application.

[0033] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason why the sending of SRS on the sixth symbol and / or at least one seventh symbol is canceled may be: the periodic or semi-persistent sending of SRS by the terminal device on the sixth symbol and / or at least one seventh symbol conflicts or overlaps with the sending of the second transmission object by the terminal device on the sixth symbol and / or at least one seventh symbol; or, the reason why the sending of SRS on the sixth symbol and / or at least one seventh symbol is canceled may also be: the priority of the periodic or semi-persistent sending of SRS by the terminal device on the at least one symbol is lower than the priority of the second transmission object by the terminal device on the at least one symbol; or, the reason why the sending of SRS on the sixth symbol and / or at least one seventh symbol is canceled 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 why the sixth symbol and / or at least one seventh symbol are cancelled may be other reasons, which are not limited in this application.

[0034] Alternatively, the terminal device sends SRS periodically. The reason why the transmission of SRS on the sixth symbol and / or at least one seventh symbol is canceled may be: 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 why the transmission of SRS on the sixth symbol and / or at least one seventh symbol is canceled may also be: 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 why the transmission of SRS on the sixth symbol and / or at least one seventh symbol is canceled 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 why the sixth symbol and / or at least one seventh symbol is canceled may also be other, which is not limited in the present application.

[0035] 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 the present application.

[0036] It should be understood that the antenna ports for sending 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 sending SRS corresponding to at least one fourth symbol and the antenna ports for sending SRS corresponding to at least one fifth symbol together include all antenna ports of the terminal device. In other words, the antenna ports for sending SRS corresponding to at least one fourth symbol may include part or all of the antenna ports of the terminal device, and the antenna ports for sending SRS corresponding to at least one fifth symbol may also include part or all of the antenna ports of the terminal device.

[0037] 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 segments of symbols before and after the middle symbol.

[0038] 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 subsequent 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 SRS that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0039] In combination with the second aspect, in certain implementations of the second 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.

[0040] Alternatively, the number of antenna ports corresponding to at least one fourth symbol and at least one fifth symbol is the same.

[0041] It should be understood that the above-mentioned number of times all antenna ports send SRS on at least one fourth symbol and at least one fifth symbol is the same, which means that the sum of the number of times each antenna port in all antenna ports sends SRS on at least one fourth symbol and the number of times SRS is sent on at least one fifth symbol is the same. In other words, the sum of the number of times each antenna port corresponds to at least one fourth symbol and the number of times each antenna port corresponds to at least one fifth symbol is the same.

[0042] 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.

[0043] 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.

[0044] It should be understood that at least one continuous symbol corresponding to the third time period in the above SRS resource can be regarded as a second symbol set, wherein each symbol is an element in the symbol set. The above 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 method of selecting one or more elements from the second symbol set, wherein the result of each method corresponds to the above at least one symbol set.

[0045] 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.

[0046] In combination with the second aspect, in certain implementations of the second aspect, at least one fourth symbol includes S symbols, each of the S 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 except at least one fourth symbol in at least one consecutive symbol corresponding to the third time period in the SRS resource.

[0047] 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 the uplink transmission performance.

[0048] 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 implement all or part of the functions of the network device, and the present application does not limit this.

[0049] 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.

[0050] 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 sending has not been canceled by the terminal device. The SRS sending 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 may be actively canceled (cancelled) by the terminal device.

[0051] Exemplarily, the symbol for which the terminal device is instructed to cancel 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 SRS on the above-mentioned symbol is instructed to be canceled may be: the transmission of 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 SRS on the above-mentioned symbol is instructed to be canceled may also be: the priority of the terminal device to send SRS on the above-mentioned at least one symbol is lower than the priority of the terminal device to send the first transmission object on the above-mentioned symbol; or, the reason why the transmission 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 the present application.

[0052] Alternatively, the terminal device sends SRS periodically or semi-persistently. The reason why the sending of SRS on the above symbol is indicated to be cancelled may be: the periodic or semi-persistent sending of SRS by the terminal device on the above symbol conflicts or overlaps with the sending of the second transmission object by the terminal device on the above symbol; or, the reason why the sending of SRS on the above symbol is indicated to be cancelled 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 symbols is lower than the priority of the second transmission object sent by the terminal device on the above symbol; or, the reason why the sending of SRS on the above symbol is indicated to be cancelled may also be: the transmission of the terminal device on the above symbol is configured as zero power, etc. The reason why the above symbol is indicated to be cancelled may also be other reasons, which are not limited in the present application.

[0053] Alternatively, the terminal device sends SRS periodically. The reason why the sending of SRS on the above symbol is indicated to be cancelled may be: the periodic sending of SRS by the terminal device on the above symbol conflicts or overlaps with the sending of the third transmission object by the terminal device on the above symbol; or, the reason why the sending of SRS on the above symbol is indicated to be cancelled may also be: the priority of the periodic sending 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 the above symbol; or, the reason why the sending of SRS on the above symbol is indicated to be cancelled may also be: the transmission of the terminal device on the above symbol is configured as zero power, etc. The reason why the above symbol is indicated to be cancelled may also be other reasons, which are not limited in the present application.

[0054] Exemplarily, the terminal device actively cancels the SRS transmission on the symbol when some symbols in the SRS resource are instructed to be cancelled, and the SRS transmitted on the remaining symbols in the SRS resource is wasted due to reasons such as phase continuity being affected and / or the number of corresponding antenna ports being inconsistent, and the terminal device actively cancels the 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.

[0055] 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 the present application.

[0056] It should be understood that uplink scheduling refers to the scheduling of the physical uplink control 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 according to the UL channel information. Therefore, the network device associates uplink scheduling with SRS resources, which means that the network device performs channel measurement based on the SRS received on the SRS resource.

[0057] Specifically, when there is at least one tenth symbol satisfying the condition in the SRS resource, the network device associates the 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.

[0058] Optionally, when there is no at least one tenth symbol satisfying the condition in the SRS resource, the network device can associate the uplink scheduling with an earlier SRS resource satisfying the condition in timing.

[0059] It should be understood that the antenna port related to uplink scheduling refers to the antenna port used by the network device to schedule the terminal device to transmit PUSCH, and all antenna ports related to uplink scheduling may be part or all of the antenna ports of the terminal device. The antenna ports corresponding to at least one tenth symbol include all antenna ports related to uplink scheduling, which means that the antenna ports corresponding to at least one tenth symbol at least include all antenna ports related to uplink scheduling. Therefore, the antenna ports corresponding to at least one tenth symbol may include part of the antenna ports of the terminal device, or may include all of the antenna ports of the terminal device.

[0060] The at least one tenth symbol may be part or all of the at least one ninth symbol.

[0061] 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.

[0062] In combination with the third aspect, in certain implementations of the third aspect, all antenna ports of the terminal device send the SRS the same number of times on at least one tenth symbol.

[0063] Alternatively, the number of times at least one tenth symbol corresponds to each antenna port is the same.

[0064] According to the above technical solution, each antenna port among all the antenna ports of the terminal device sends SRS on the above-mentioned at least one tenth symbol the same number of times, 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.

[0065] 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.

[0066] It should be understood that the at least one ninth symbol can be regarded as a third symbol set, wherein each symbol is an element in 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 method of selecting one or more elements from the third symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0067] According to the above technical solution, the number of at least one tenth symbol associated with the 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 the uplink channel measurement, and ensuring the uplink transmission performance.

[0068] 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.

[0069] 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.

[0070] 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 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.

[0071] 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 causes the phase continuity between the two segments of symbols before and after the middle symbol to be unable to be guaranteed.

[0072] According to the above technical solution, when the transmission interruption of the middle symbol affects the continuity of the previous and next phases, the network device can associate the uplink scheduling to 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.

[0073] 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 a symbol set with the largest number of symbols in at least one symbol set.

[0074] It should be understood that the symbols corresponding to the fifth time period can be regarded as a fourth symbol set, wherein 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 method of selecting any one or multiple consecutive elements from the first symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0075] 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.

[0076] 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 a symbol set with the latest end time in at least one symbol set.

[0077] 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.

[0078] In a fourth aspect, a communication device is provided, which may be a terminal device, or a module (such as a chip or circuit) in the terminal device, or a logical node, a logical module or software that can realize all or part of the functions of the terminal device. The device includes: a receiving unit, which is used to receive indication information, and the indication information is used to indicate that the SRS transmission on the first symbol in the SRS resource is canceled; a sending unit, which is used to send SRS on at least one second symbol, and 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, and the first time period is the time period between the first moment and the second moment, and 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, and the antenna port for sending SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device.

[0079] In combination with the fourth aspect, in certain implementations of the fourth aspect, all antenna ports of the terminal device send the SRS on at least one second symbol the same number of times.

[0080] 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.

[0081] 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.

[0082] 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 a 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.

[0083] The explanation and beneficial effects of the communication device-related contents provided in the fourth aspect may refer to the communication method shown in the first aspect and will not be repeated here.

[0084] In a fifth aspect, a communication device is provided, which may be a terminal device, a module in the terminal device (such as a chip or circuit), 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, used for receiving a plurality of indication information, the plurality of indication information being used for indicating that SRS transmission on a plurality of symbols in an SRS resource is cancelled; a sending unit, used for sending SRS on at least one fourth symbol and at least one fifth symbol, the at least one fourth symbol being a symbol in at least one continuous symbol corresponding to a third time period in the SRS resource, the third time period being a time period between a third moment and a fourth moment, the third moment being a moment when the first indication information is parsed by a terminal device, the fourth moment being a moment corresponding to a starting position of a sixth symbol, the first indication information being the latest indication information received among the plurality of indication information, the sixth symbol being a symbol for which SRS transmission is cancelled indicated by the first indication information, the at least one fifth symbol being all symbols except at least one seventh symbol among symbols corresponding to the fourth time period in the SRS resource, the fourth time period being a time period between a starting moment of the SRS resource and the third moment, the at least one seventh symbol being a symbol for which SRS transmission is cancelled indicated by at least one second indication information, the at least one second indication information being all indication information except the first indication information among the plurality of indication information, and the antenna ports for sending SRS corresponding to the at least one fourth symbol and the at least one fifth symbol including all antenna ports of the terminal device.

[0085] 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.

[0086] 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.

[0087] In combination with the fifth aspect, in certain implementations of the fifth aspect, at least one fourth symbol includes S symbols, the antenna ports for sending SRS corresponding to each of the S symbols are 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 consecutive symbol corresponding to the third time period in the SRS resource except at least one fourth symbol.

[0088] 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.

[0089] In a sixth aspect, a communication device is provided, which may be a network device, or a module (such as a chip or circuit) in a network device, or a logical node, a logical module or software that can implement all or part of the functions of the network device. The device includes: 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 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 the uplink scheduling.

[0090] 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.

[0091] 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 the 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 the at least one symbol set.

[0092] 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 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.

[0093] 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 among 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.

[0094] 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 a symbol set with the largest number of symbols in at least one symbol set.

[0095] 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 a symbol set with the latest end time in at least one symbol set.

[0096] In the seventh aspect, a communication device is provided, comprising a processor, wherein the processor is used to, by executing a computer program or instruction or through a logic circuit, enable the communication device to perform the method described in the first aspect and any possible embodiment of the first aspect; or enable the communication device to perform the method described in the second aspect and any possible embodiment of the second aspect; enable the communication device to perform the method described in the third aspect and any possible embodiment of the third aspect.

[0097] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0098] In a possible implementation manner, the communication device further includes a communication interface, which is used to input and / or output signals.

[0099] 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 possibility of the first aspect; or, the logic circuit being used to execute the method described in the second aspect and any possibility of the second aspect; the logic circuit being used to execute the method described in the third aspect and any possibility of the third aspect.

[0100] 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.

[0101] 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 possibility of the first aspect to be executed; or, cause the method described in the second aspect and any possibility of the second aspect to be executed; cause the method described in the third aspect and any possibility of the third aspect to be executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] Figure 1 It is a schematic diagram of an example of a communication system 100 applicable to an embodiment of the present application.

[0103] Figure 2 It is a schematic diagram of an example of a cyclic repeated transmission method applicable to an embodiment of the present application.

[0104] Figure 3 It is a schematic diagram of an example of a continuous repeated transmission method applicable to an embodiment of the present application.

[0105] Figure 4 It is a schematic flowchart of an example of a communication method 400 applicable to an embodiment of the present application.

[0106] Figure 5 This is a schematic diagram of OFDM symbols in an SRS resource applicable to an embodiment of the present application.

[0107] Figure 6 It is a schematic flowchart of another communication method 600 applicable to an embodiment of the present application.

[0108] Figure 7 This is a schematic diagram of OFDM symbols in another example of SRS resources applicable to an embodiment of the present application.

[0109] Figure 8 This is a schematic diagram of OFDM symbols in another example of SRS resources applicable to an embodiment of the present application.

[0110] Fig. 9 This is a schematic diagram of OFDM symbols in another example of SRS resources applicable to an embodiment of the present application.

[0111] Fig.10 It is a schematic flowchart of another communication method 1000 applicable to an embodiment of the present application.

[0112] Fig.11 This is a schematic diagram of OFDM symbols in another example of SRS resources applicable to an embodiment of the present application.

[0113] Fig.12 This is a schematic diagram of OFDM symbols in another example of SRS resources applicable to an embodiment of the present application.

[0114] Fig.13 It is a schematic block diagram of an example of a communication device 1300 applicable to an embodiment of the present application.

[0115] Fig.14 It is a schematic block diagram of an example of a communication device 1400 applicable to an embodiment of the present application.

[0116] Fig.15 It is a schematic block diagram of an example of a communication device 1500 applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0117] 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.

[0118] As an example and not 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, a vehicle-mounted 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.

[0119] 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.

[0120] Among them, wearable devices can also be called wearable smart devices, which are a general term for the application of 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 only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that focus on a certain type of application functions 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.

[0121] In addition, in the embodiments of the present application, the terminal device may also be a terminal device in an 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 that interconnects people and machines and things.

[0122] 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.

[0123] 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 code division multiple access (CDMA), 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., may be an access point (AP) in a WLAN, or may be 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).

[0124] 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 may be a cell corresponding to the access network device (for example, a base station), and the cell may 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.

[0125] 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.

[0126] In addition, in the present application, the network equipment may include base stations (gNB), such as macro base 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.

[0127] 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.

[0128] 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 a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, 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 a browser, an address book, a word processing software, and an 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 can 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 a terminal device or a network device that can call a program and execute a program.

[0129] 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" 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 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 memory (EPROM), 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.

[0130] Figure 1 1 is a schematic diagram of a system 100 that can be used for the communication method of the embodiment of the present application. Figure 1 As shown, the system 100 includes an access network device 102, and the access network device 102 may include one antenna or multiple antennas, such as antennas 104, 106, 108, 110, 112, and 114. In addition, the access network device 102 may additionally include a transmitter chain and a receiver chain, and those skilled in the art will appreciate that they may include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, demodulators, demultiplexers, or antennas, etc.).

[0131] The access network device 102 can communicate with multiple 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, portable computers, 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.

[0132] like Figure 1As shown, terminal device 116 is in communication with antennas 112 and 114, where antennas 112 and 114 transmit information to terminal device 116 via forward link (also referred to as downlink) 118 and receive information from terminal device 116 via reverse link (also referred to as uplink) 120. In addition, terminal device 122 is in communication with antennas 104 and 106, where antennas 104 and 106 transmit information to terminal device 122 via forward link 124 and receive information from terminal device 122 via reverse link 126.

[0133] Each antenna (or antenna group consisting of multiple antennas) and / or area designed for communication is called a sector of the access network device 102. For example, the antenna group can be designed to communicate with the terminal devices in the sector of the access network device 102 coverage area. The access network device can send signals to all the terminal devices in its corresponding sector through a single antenna or multiple antenna transmit diversity. In the process of the access network device 102 communicating with the terminal devices 116 and 122 through the forward links 118 and 124, respectively, the transmitting antenna of the access network device 102 can also use beamforming to improve the signal-to-noise ratio of the forward links 118 and 124. In addition, compared with the way in which the access network device sends signals to all its terminal devices through a single antenna or multiple antenna transmit diversity, when the access network device 102 uses beamforming to send signals to the terminal devices 116 and 122 randomly dispersed in the relevant coverage area, the mobile devices in the adjacent cells will be less interfered.

[0134] 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 other communication devices, or store in a memory, etc.) a certain number of data bits to be sent to the wireless communication receiving device through a channel. Such data bits may be included in a transmission block (or multiple transmission blocks) of data, and the transmission block may be segmented to generate multiple code blocks.

[0135] In addition, the communication system 100 may be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, an IoT network or other networks. Figure 1 This is just a simplified schematic diagram for example. The network may also include other access network devices. Figure 1 Not drawn in.

[0136] In the embodiment of the present application, data or information may 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.

[0137] Among them, a time unit can 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 can be 1 millisecond (ms), a slot consists of 7 or 14 OFDM symbols, and a mini-slot can 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).

[0138] In communication systems, such as 5G systems, in order to combat path loss in high-frequency scenarios, two communication devices with communication connections can obtain gain through beam forming. The transmitting end (e.g., network equipment) and the receiving end (e.g., terminal equipment) can obtain the pairing relationship between the transmitting beam and the receiving beam through beam training.

[0139] Among them, the beam can be understood as a spatial filter or spatial parameters. The beam used to send signals can be called a transmission beam (Tx beam), which can be a spatial domain transmit filter or a spatial domain transmit parameter; the 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.

[0140] The technology for forming the beam may be a beamforming technology or other technology. For example, the beamforming technology may be a digital beamforming technology, an analog beamforming technology, or a hybrid digital / analog beamforming technology. A transmit beam may refer to the distribution of signal strength in different directions of space after the signal is transmitted by an antenna, and a receive beam may refer to the distribution of signal strength in different directions of space of a wireless signal received from an antenna.

[0141] In the NR protocol, the beam can be, for example, a spatial filter. However, it should be understood that the present application does not exclude the possibility of defining other terms in future protocols to express the same or similar meanings.

[0142] The beam pairing relationship, that is, the pairing relationship between the transmit beam and the receive beam, is also the pairing relationship between the spatial transmit filter and the spatial receive filter. Transmitting signals between the transmit beam and the receive beam having the beam pairing relationship can obtain a larger beamforming gain.

[0143] In one implementation, the transmitting end may send the reference signal by means of beam scanning, and the receiving end may also receive the reference signal by means of beam scanning. Specifically, the transmitting end may form beams with different directivities in space by means of beamforming, 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 means of beamforming, 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.

[0144] 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.

[0145] 1. Sounding reference signal (SRS)

[0146] 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 uplink (UL) channel information of the terminal device, thereby scheduling data for the terminal device according to the UL channel information.

[0147] 2. Antenna port

[0148] 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 an embodiment of the present application, an antenna port may refer to a transceiver unit (TxRU).

[0149] 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 a CSI-RS resource, an 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.

[0150] 3. Repeated transmission of reference signals

[0151] 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 the two SRS ports use the same physical antenna, the same transmission power, and the same bandwidth to transmit SRS on multiple consecutive symbols. 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, such as Figure 2 Continuous repetition is to divide all ports into s groups, and the ports in each group are repeatedly mapped to continuous R = m / s symbols, as shown in Figure 3 As shown. For example, Figure 2 and Figure 3 The two SRS ports shown are 0 and 1, and Figure 2 and Figure 3 As shown, s=2, m=6, and R=3.

[0152] 4. Dropping of reference signal transmission

[0153] When the transmission of the reference signal collides with other transmissions and the other transmissions have a higher priority, the transmission of the reference signal on the conflicting symbols is cancelled. Exemplarily, when the SRS collides with the physical uplink control channel (PUCCH), the transmission of the SRS on the conflicting symbols is cancelled.

[0154] 5. Coherent / incoherent capabilities

[0155] 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. Furthermore, the terminal device can also report to the network device the maximum coherence capability between the various antenna ports of the terminal device.

[0156] 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.

[0157] Among them, full coherence means that phase calibration is completed between all antenna ports of the terminal device, and phase weighting can be performed. In other words, the terminal device can use all antenna ports to send the same layer of data. Partial coherence means that the antenna port group of the terminal device is fully phase-calibrated, and phase weighting can be performed; however, the antenna port groups of the terminal device are not phase-calibrated, and phase weighting cannot be performed. Each antenna port group includes at least one antenna port. Incoherence means that phase calibration is not completed between all antenna ports of the terminal device, and phase weighting cannot be performed. In other words, the terminal device needs to use one antenna port to send one layer of data, and use other antenna ports to send other layers of data.

[0158] 6. Transport layer

[0159] In multiple-input multiple-output (MIMO) technology, a transport layer can be regarded as an independently transmittable data stream. In order to improve the utilization of spectrum resources and the data transmission capacity of the communication system, data can be transmitted between network devices and terminal devices through multiple transport layers.

[0160] 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 according to the UL channel information, and the terminal device transmits 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 PUSCH based on the measurement result.

[0161] However, scheduling PUSCH based on the measurement result of SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance. In addition, since the information that the network device indicates that the transmission of part or all of the SRS in the SRS resource of the terminal device is canceled has a timing relationship with the transmission of the SRS, the terminal device may be instructed that the transmission of part or all of the SRS is canceled during the SRS transmission process, which further affects the accuracy of uplink channel acquisition and uplink transmission performance.

[0162] 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, such as Figure 4 shown.

[0163] In this embodiment, the method is illustrated by taking the terminal device and the network device as the execution subject of the interactive indication as an example, but the present application does not limit the execution subject of the interactive indication. Figure 4 The network device in the method may also be a chip, a chip system, or a 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 functions of the network device; Figure 4 The terminal device in the invention may also be a chip, a chip system or a 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 functions of the terminal device.

[0164] 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.

[0165] Step S410: The network device sends indication information to the terminal device. Correspondingly, the terminal device receives indication information from the network device.

[0166] Specifically, the indication information is used to indicate that the SRS transmission on the first symbol in the SRS resource is canceled. The SRS resource may be a resource that the network device is preparing to use to send the SRS, or a resource that is being used to send the SRS. The SRS resource may correspond to a time unit in the time domain, and the time unit is composed of a plurality of consecutive symbols including the first symbol.

[0167] 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, so 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 reasons, which are not limited in the present application.

[0168] The single indication information may indicate that the SRS transmission on multiple symbols in the SRS resource is cancelled. In this case, the first symbol may be the first symbol indicated by each indication information that the SRS transmission is cancelled, that is, the earliest symbol in time sequence.

[0169] 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.

[0170] Among them, the at least one second symbol is a symbol in at least one symbol that corresponds to the first time period and is continuous 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 SRS resource, and the first moment is earlier than the second moment in time sequence, the 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 first time period, and at least one second symbol is a symbol among the one or more symbols.

[0171] In addition, the antenna port for sending SRS corresponding to the at least one second symbol includes all antenna ports of the terminal device.

[0172] 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.

[0173] 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.

[0174] 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 limit this.

[0175] Exemplarily, the total number of antenna ports of the terminal device is 8, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. Figure 5As shown, 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 located 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 the SRS transmission on the eighth OFDM symbol is cancelled, the second moment is the moment when the eighth OFDM symbol starts, and the first time period between the first moment and the second moment corresponds to 5 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 the SRS can be transmitted on the above 5 consecutive symbols. Since the SRS transmitted on the OFDM symbol after the eighth OFDM symbol may not be used, for example, the transmission interruption of the eighth OFDM symbol causes the phase continuity between the seventh OFDM symbol and the ninth OFDM symbol to be unable to be guaranteed, the technical solution of method 400 determines at least one second symbol in the 5 symbols corresponding to the first time period for transmitting the SRS.

[0176] 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 middle 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 Figure 5 In the case shown, 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 eight antenna ports 0 to 7 of the terminal device, so at least one second symbol can be the 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 part of the five symbols that can correspond to all eight antenna ports, for example, at least one second symbol can be the fourth OFDM symbol and the fifth OFDM symbol, and all combinations are not described here one by one.

[0177] Optionally, all antenna ports of the terminal device send 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 at least one second symbol is the same.

[0178] 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, assuming that at least one second symbol is Figure 5 The third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol and the seventh OFDM symbol are shown in . 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 3 symbols in at least one second symbol that can correspond to antenna port 0, so in this case, the number of times at least one second symbol corresponds to antenna port 0 is 3. The number of times the 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", which will not be repeated below.

[0179] For example, Figure 5 As shown, assuming 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 the 0-3 antenna ports of the terminal device, and there are only 2 second symbols corresponding to the 4-7 antenna ports of the terminal device. Therefore, the 0-3 antenna ports of the terminal device send SRS 3 times in the third OFDM symbol, the fifth OFDM symbol, and the seventh OFDM symbol, while the 4-7 antenna ports 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 SRS once in the seventh OFDM symbol, and the 4-7 antenna ports of the terminal device send SRS once in the sixth OFDM symbol, 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.

[0180] As described above, there may be multiple results for determining at least one second symbol that meets the condition in at least one symbol that corresponds to the first time period and is continuous in the SRS resource. For this situation, the present application provides two implementations for determining one result from multiple results.

[0181] 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 at least one second symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0182] It should be understood that the at least one continuous symbol corresponding to the first time period can be regarded as a first symbol set, wherein 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 method of selecting any one or multiple continuous elements from the first symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0183] For example, Figure 5 As shown, it is assumed that the condition satisfied by at least one second symbol is that the antenna port for sending SRS corresponding to 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 send SRS on at least one second symbol is the same. Then 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.

[0184] 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.

[0185] 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 at least one second symbol is a symbol set with the latest end time in the at least one symbol set.

[0186] It should be understood that the end time of a symbol set refers to the end time of a 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 time period corresponding to the consecutive symbols contained in the set.

[0187] For example, Figure 5 As shown, it is assumed that the condition satisfied by at least one second symbol is that the antenna port for sending SRS corresponding to 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 send SRS on at least one second symbol is the same. Then at least one symbol set corresponding to 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}. Among them, the symbol set with the latest end time is {sixth OFDM symbol, seventh OFDM symbol} or {fourth OFDM symbol, fifth OFDM symbol, sixth OFDM symbol, seventh OFDM symbol} containing the seventh OFDM symbol.

[0188] 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.

[0189] The above two implementations can be used alone or in combination, and this application does not limit this.

[0190] For example, Figure 5As shown, assuming that the at least one second symbol satisfies the following conditions: 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 that all antenna ports of the terminal device transmit SRS on at least one second symbol is the same. Then the at least one second symbol finally determined is the symbol set {the fourth OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} with the largest number of symbols and the latest end time.

[0191] Additionally, after determining at least one second symbol, the terminal device cancels sending SRS on other symbols except 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 at least one second symbol.

[0192] For example, Figure 5 As shown, 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 the resources used to transmit SRS and avoiding the waste of SRS resources caused by transmitting invalid SRS.

[0193] It should be understood that if there is no at least one second symbol satisfying the above conditions in the symbols corresponding to the first time period, the terminal device cancels sending SRS in all symbols corresponding to the first time period. In other words, the terminal device does not send SRS to the network device in the first time period.

[0194] It should be understood that the above method 400 can be repeatedly executed on the same SRS resource. That is, the terminal device can receive multiple different indication information at multiple different times, and different indication information indicates that the SRS transmission on different symbols in the same SRS resource is cancelled. In this case, for multiple indication information received at different times, the terminal device can sequentially execute the method provided by the first aspect according to the timing of reception.

[0195] If at least one second symbol that satisfies the above conditions does not exist 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 at least one second symbol that satisfies the above conditions exists in at least one continuous symbol corresponding to the first time period corresponding to a certain indication information, the embodiments of the present application provide two different processing methods.

[0196] The first processing method is: the terminal device only actively cancels the SRS transmission on symbols other than at least one second symbol on at least one continuous symbol corresponding to the first time period corresponding to the indication information. In other words, for each indication information among 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 among the multiple indication information is canceled, and does not judge the symbols corresponding to the time periods other than the first time period.

[0197] According to the above processing method, the terminal device may eventually send SRS to the network device on multiple continuous symbols in an SRS resource, and the multiple continuous symbols are not continuous with each other. When the transmission interruption of the middle 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 continuous segment of the above multiple continuous symbols for uplink channel measurement. In this case, the network device can use the SRS received on a continuous segment of the multiple continuous symbols with the largest number of symbols for uplink channel measurement, and / or, the network device can use the SRS received on a continuous segment of the multiple continuous symbols with the latest end time for uplink channel measurement. For specific implementation methods, please refer to the embodiments related to the network device below, which will not be repeated here.

[0198] The second processing method is: the terminal device actively cancels the SRS transmission on the third symbol. Specifically, the third symbol is all symbols except the first symbol and at least one second symbol in the symbols corresponding to the second time period in the SRS resource, the second time period is the time period between the first moment and the end moment of the SRS resource, and 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, for other indication information corresponding to the SRS resource received after the indication information, the terminal device can no longer repeat the above method 400, thereby saving the resources used to transmit the SRS and avoiding the waste of SRS resources caused by the transmission of invalid SRS.

[0199] As described above, the above embodiment can be applied to the scenario where the transmission interruption of the middle symbol on the SRS resource will cause the phase continuity between the two segments before and after the middle symbol to be unable to be guaranteed. It should be understood that the above embodiment can also be applied to other scenarios, such as the scenario where the transmission interruption of the middle symbol on the SRS resource can ensure the phase continuity between the two segments before and after the middle symbol, which is not specifically limited in this application.

[0200] The following describes a method 600 for reserving SRS transmission on more symbols in a scenario where the transmission interruption of an intermediate symbol on an SRS resource can ensure the phase continuity between the two symbols before and after the intermediate symbol, due to the characteristic that the SRS sent on discontinuous symbols on the SRS resource can also be used by network devices for uplink channel measurement, such as Figure 6 shown.

[0201] In this embodiment, the method is illustrated by taking the terminal device and the network device as the execution subject of the interactive indication as an example, but the present application does not limit the execution subject of the interactive indication. Figure 6 The network device in the method may also be a chip, a chip system, or a 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 functions of the network device; Figure 6 The terminal device in the invention may also be a chip, a chip system or a 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 functions of the terminal device.

[0202] 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.

[0203] Step S610: The network device sends a plurality of indication information to the terminal device. Correspondingly, the terminal device receives a plurality of indication information from the network device.

[0204] Specifically, the above-mentioned multiple indication information is used to indicate that the SRS transmission on multiple symbols in the same SRS resource is canceled. The SRS resource can be a resource that the network device prepares to use to send the SRS, or a resource that is being used to send 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 why the SRS transmission or reception on multiple symbols is canceled can refer to the reason why the SRS transmission or reception on the first symbol is canceled in step S410, which will not be repeated here.

[0205] It should be understood that the terminal device may receive each of the multiple indication information from the network device at different times, so each of the multiple indication information may be parsed by the terminal device at different times. That is, the multiple indication information has a sequential order in terms of timing.

[0206] 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 timing sequence among the multiple indication information. 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 among 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 timing sequence.

[0207] The first indication information is used to indicate that the SRS transmission on the sixth symbol in the above-mentioned SRS resource is cancelled, and 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 cancelled.

[0208] 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.

[0209] 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 to transmit. There are one or more continuous symbols in the SRS resource corresponding to the above-mentioned third time period, and at least one fourth symbol is a symbol in the one or more symbols.

[0210] The at least one fifth symbol is all symbols except at least one seventh symbol in the symbols corresponding to the fourth time period in the SRS resource. The fourth time period is the time 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, at least one fifth symbol is all symbols that are not indicated by the indication information to cancel the SRS transmission within the time 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.

[0211] In addition, 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.

[0212] It should be understood that the antenna ports for sending 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 sending SRS corresponding to at least one fourth symbol and the antenna ports for sending 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 sent through some symbols in the SRS resource (that is, 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.

[0213] 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 SRS that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0214] Exemplarily, the total number of antenna ports of the terminal device is 8, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7. The OFDM symbols on the SRS resource include two types of symbols, the first type of symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second type of symbol corresponds to antenna ports 4 to 7 of the terminal device. Figure 7 As shown, 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. Among them, the SRS transmission on the second OFDM symbol and the fourth OFDM symbol is cancelled by at least one second indication information that is earlier than the first indication information in timing. 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 above-mentioned at least one seventh symbol, and the first OFDM symbol and the third OFDM symbol are the above-mentioned at least one fifth symbol.

[0215] The first indication information indicates that the SRS transmission on the eighth OFDM symbol is canceled, the fourth moment is the moment when the eighth OFDM symbol starts, 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, and 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 the 0th to 3rd antenna ports of the terminal device, the at least one fourth symbol may only include symbols corresponding to the 4th to 7th antenna ports of the terminal device, for example, the at least one fourth symbol may be the sixth OFDM symbol.

[0216] It should be understood that Figure 7 In the example shown, 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.

[0217] 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.

[0218] It should be understood that the above-mentioned number of times all antenna ports send SRS on at least one fourth symbol and at least one fifth symbol is the same, which means that the sum of the number of times each antenna port in all antenna ports sends SRS on at least one fourth symbol and the number of times SRS is sent on at least one fifth symbol is the same. In other words, the sum of the number of times each antenna port corresponds to at least one fourth symbol and the number of times each antenna port corresponds to at least one fifth symbol is the same.

[0219] For example, Figure 8As shown, at least one fifth symbol is the second OFDM symbol and the fourth OFDM symbol. In this case, the terminal device has sent SRS twice through antenna ports 4 to 7, but has not sent SRS through antenna ports 0 to 3. Therefore, in order for the terminal device to 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 may be the fifth OFDM symbol and the seventh OFDM symbol. At this time, at least one fourth symbol has 2 symbols corresponding to antenna ports 0 to 3, and at least one fifth symbol has 2 symbols corresponding to antenna ports 4 to 7, that is, the terminal device sends SRS twice through antenna ports 0 to 3 and also sends SRS twice through antenna ports 4 to 7 on at least one fourth symbol and at least one fifth 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.

[0220] 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 at least one fourth symbol may not meet the above requirements. In this case, when determining at least one fourth symbol, the terminal device minimizes the difference in the number of times all antenna ports of the terminal device send SRS on at least one fourth symbol and at least one fifth symbol.

[0221] For example, Figure 7 In the case shown, 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 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, among 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 symbols corresponding to antenna ports 0 to 3 as much as possible, so the at least one fourth symbol finally determined is the sixth OFDM symbol.

[0222] 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 implementations for determining one result from multiple results.

[0223] 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 at least one fourth symbol is a symbol set with the largest number of symbols in the at least one symbol set.

[0224] It should be understood that the at least one continuous symbol corresponding to the third time period can be regarded as a second symbol set, wherein 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 method of selecting one or more elements from the second symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0225] For example, Fig. 9 As shown, 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 sending 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 send SRS the same number of times on at least one fourth symbol and at least one fifth symbol. Then 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.

[0226] The above method can use at least one fourth 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.

[0227] A second implementation manner is: the at least one fourth symbol includes S symbols, where 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, and the at least one eighth symbol is all symbols except the at least one fourth symbol in at least one continuous symbol corresponding to the third time period in the SRS resource.

[0228] It should be understood that each of the S symbols corresponds to a different antenna port for sending SRS, and the same symbol refers to a symbol corresponding to the same antenna port for sending SRS. That is, each of the at least one fourth symbol corresponds to a number of symbols with the latest end time among the same symbols in the third time period.

[0229] For example, Figure 8 In the situation shown, it is assumed that the condition satisfied by at least one fourth symbol is that the antenna ports for sending SRS corresponding to at least one fourth symbol and at least one fifth symbol include all antenna ports of the terminal device, and the number of times all antenna ports of the terminal device send SRS on at least one fourth symbol and at least one fifth symbol is the same. Among them, 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 2 first symbols corresponding to antenna ports 0 to 3 of the terminal device, and these 2 first symbols are the 2 first symbols with the latest end time 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 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, there is no need 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.

[0230] 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.

[0231] The above two implementations can be used alone or in combination, and this application does not limit this.

[0232] Additionally, after determining at least one fourth symbol, the terminal device cancels sending SRS on other symbols except the at least one fourth symbol corresponding to the third time period. In other words, the terminal device only sends SRS to the network device on at least one fourth symbol in the third time period.

[0233] The aforementioned method 400 and method 600 and related embodiments describe that the terminal device determines the symbol used to transmit the SRS on the SRS resource, and actively cancels the SRS transmission on other symbols on the SRS resource, thereby avoiding the invalid SRS transmission scenario. 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 receives the SRS that is closest to the uplink scheduling, and perform channel measurement based on the SRS received on the SRS resource, and schedule the PUSCH based on the measurement result.

[0234] However, in the scenario where there are invalid SRSs 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 continuous symbols in the same SRS resource, then the terminal device needs to determine some or all of the symbols 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, such as Fig.10 shown.

[0235] In this embodiment, the method is illustrated by taking the terminal device and the network device as the execution subject of the interactive indication as an example, but the present application does not limit the execution subject of the interactive indication. Fig.10 The network device in the method may also be a chip, a chip system, or a 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 functions of the network device; Fig.10 The terminal device in the invention may also be a chip, a chip system or a 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 functions of the terminal device.

[0236] 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.

[0237] 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 an SRS resource.

[0238] 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 sending has not been canceled by the terminal device. The SRS sending on symbols other than 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 sending or receiving on symbols other than at least one ninth symbol on the SRS resource is canceled can refer to the reason why the SRS sending or receiving on the first symbol is canceled in step S410, which will not be repeated here.

[0239] 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 a plurality of continuous symbols.

[0240] Step S1020: The network device associates uplink scheduling with SRS resources.

[0241] 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. Among them, the at least one tenth symbol is a symbol in 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 received SRS 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.

[0242] 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.

[0243] It should be understood that the antenna port related to uplink scheduling refers to the antenna port used by the network device to schedule the terminal device to transmit PUSCH, and all antenna ports related to uplink scheduling may be part or all of the antenna ports of the terminal device. The antenna ports corresponding to at least one tenth symbol include all antenna ports related to uplink scheduling, which means that the antenna ports corresponding to at least one tenth symbol at least include all antenna ports related to uplink scheduling. Therefore, the antenna ports corresponding to at least one tenth symbol may include part of the antenna ports of the terminal device, or may include all of the antenna ports of the terminal device.

[0244] Exemplarily, the total number of antenna ports of the terminal device is 8, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. The OFDM symbols on the SRS resources 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.

[0245] It should be understood that uplink scheduling refers to the scheduling of the physical uplink control 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 according to the UL channel information. Therefore, the network device associates uplink scheduling with SRS resources, which means that the network device performs channel measurement based on the SRS received on the SRS resource.

[0246] Specifically, when there is at least one tenth symbol satisfying the condition in the SRS resource, the network device associates the 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.

[0247] The at least one tenth symbol may be part or all of the at least one ninth symbol.

[0248] Optionally, when there is no at least one tenth symbol satisfying the condition in the SRS resource, the network device can associate the uplink scheduling with an earlier SRS resource satisfying the condition in timing.

[0249] 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 SRS that can be used for uplink channel measurement, improving the accuracy of uplink channel acquisition and ensuring uplink transmission performance.

[0250] 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.

[0251] 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.

[0252] The above method can make the network device 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.

[0253] As described above, since the SRS transmission on some symbols may be canceled when the terminal device sends the SRS to the network device, there may be a situation where the SRS transmission is interrupted between at least one ninth symbol. In this case, for two different situations where the transmission interruption of the middle symbol may affect the continuity of the previous and next phases and the transmission interruption of the middle symbol may not affect the continuity of the previous and next phases, the embodiment of the present application provides two different processing methods.

[0254] The first processing method is: when the transmission interruption of the middle symbol does not affect the continuity of the previous and next phases, at least one tenth symbol can be all or part of at least one ninth symbol. In this case, the present application provides two implementation methods.

[0255] A first implementation method is: the at least one ninth symbol mentioned above 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 mentioned above is the symbol set with the largest number of symbols in the at least one symbol set.

[0256] It should be understood that all of the at least one ninth symbol can be regarded as a third symbol set, wherein each symbol is an element in 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 method of selecting one or more elements from the third symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0257] For example, Fig.11As shown, 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 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 scope of the above-mentioned at least one ninth symbol, the network device can determine the symbol set with the largest number of symbols including all 5 symbols {the second OFDM symbol, the third OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} as at least one tenth symbol, thereby performing uplink channel measurement based on the SRS received on the above-mentioned at least one tenth symbol.

[0258] Assuming that the condition satisfied by at least one tenth symbol also includes that the antenna port corresponding to at least one tenth symbol includes 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 at least one tenth symbol.

[0259] The above method can make the number of at least one tenth symbol associated with the 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 the uplink channel measurement, and ensuring the uplink transmission performance.

[0260] The second implementation method is: the above-mentioned at least one tenth symbol includes S 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 at least one eleventh symbol is all symbols in at least one ninth symbol except at least one tenth symbol.

[0261] It should be understood that each of the S symbols corresponds to a different antenna port for sending SRS, and the same symbol refers to a symbol corresponding to the same antenna port for sending SRS. That is, each of the at least one tenth symbol is a number of symbols with the latest end time among the same symbols in the at least one ninth symbol.

[0262] For example, Fig.11In the case shown, 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 the number of times all antenna ports of the terminal device send SRS on the at least one tenth symbol is the same. Then 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 at least one tenth symbol.

[0263] 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.

[0264] The above two implementations can be used alone or in combination, and this application does not limit this.

[0265] For example, Fig.11 In the case shown, it is assumed 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 the number of times that all antenna ports of the terminal device send SRS on at least one tenth symbol is the same. By using the above two implementations in combination, the network device can eventually determine the symbol set {the second OFDM symbol, the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol} as at least one tenth symbol.

[0266] The second processing method is: when the transmission interruption of the intermediate symbol affects the continuity of the previous and next phases, the at least one ninth symbol mentioned above 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 at least one tenth symbol mentioned above is a symbol among the symbols corresponding to the fifth time period in the N time periods, and N is a positive integer.

[0267] Specifically, the fifth time period may be a time period corresponding to the largest number of symbols among the above-mentioned N time periods, and / or the fifth time period may be a time period having the latest end time among the N time periods.

[0268] As an example, Fig.12As shown, since the SRS transmission on the fifth OFDM symbol is interrupted, at least one ninth symbol can correspond to two time periods. Among them, the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol correspond to time period #1, and the sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol correspond to time period #2. The network device can determine at least one tenth symbol in the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol corresponding to time period #1 with a larger number of corresponding symbols, or determine at least one tenth symbol in the sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol corresponding to time period #2 with a later end time.

[0269] 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.

[0270] 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 at least one tenth symbol is the symbol set with the largest number of symbols in the at least one symbol set.

[0271] It should be understood that the symbols corresponding to the fifth time period can be regarded as a fourth symbol set, wherein 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 method of selecting any one or multiple consecutive elements from the fourth symbol set, wherein the result of each method corresponds to the at least one symbol set.

[0272] For example, Fig.12 In the case shown, it is assumed that the fifth time period is time period #2. Then the network device can determine the symbol set {sixth OFDM symbol, seventh OFDM symbol, eighth OFDM symbol} with the largest number of symbols including all 3 symbols as at least one tenth symbol. If at least one tenth symbol also needs to meet the condition that the antenna port corresponding to at least one tenth symbol includes all antenna ports of the terminal device, then the network device can determine the symbol set {sixth OFDM symbol, seventh OFDM symbol} or {seventh OFDM symbol, eighth OFDM symbol} including 2 symbols as at least one tenth symbol.

[0273] 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 uplink channel measurement, and ensuring uplink transmission performance.

[0274] 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 at least one tenth symbol is the symbol set with the latest end time in the at least one symbol set.

[0275] For example, Fig.12 In the case shown, it is assumed that the fifth time period is time period #2. Then the network device can determine the symbol set {seventh OFDM symbol, eighth OFDM symbol} or {sixth OFDM symbol, seventh OFDM symbol, eighth OFDM symbol} with the largest number of symbols including all 3 symbols as at least one tenth symbol. If at least one tenth symbol also needs to meet the condition that the antenna port corresponding to at least one tenth symbol includes all antenna ports of the terminal device, then the network device can determine {seventh OFDM symbol, eighth OFDM symbol} as at least one tenth symbol.

[0276] 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.

[0277] The above two implementations can be used alone or in combination, and this application does not limit this.

[0278] For example, Fig.12 In the case shown, it is assumed that the fifth time period is time period #2, and the condition satisfied by at least one tenth symbol is that the antenna port corresponding to at least one tenth symbol includes all antenna ports of the terminal device, and the number of times all antenna ports of the terminal device send SRS on at least one tenth symbol is the same. By using the above two implementations in combination, the network device can eventually determine the symbol set {seventh OFDM symbol, eighth OFDM symbol} as at least one tenth symbol.

[0279] 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 the 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 limitation on this.

[0280] As an example, the scenario in which method 400 and method 1000 are jointly executed may be the scenario described in the first processing mode in the above method 400. In this case, the terminal device may determine multiple segments of continuous symbols in the SRS resource according to method 400 for transmitting SRS to the network device, and the multiple segments of continuous symbols are not continuous with each other. After the network device receives the SRS from the multiple segments of continuous symbols in the above SRS resource, it may determine a segment of continuous symbols in the multiple segments of continuous symbols according to method 1000, and perform uplink channel measurement based on the SRS received on the segment of continuous symbols.

[0281] As another example, the scenario in which method 600 is jointly executed with method 1000 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.

[0282] Finally, the device embodiment of the embodiment of the present application is introduced.

[0283] In order to implement the functions in the method provided in this application, the terminal device and the network device may include a hardware structure and / or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0284] Fig.13 1 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, and the processor 1310 and the communication interface 1320 may be interconnected via a bus 1330. The communication device 1300 may be a terminal device or a network device.

[0285] Optionally, the communication device 1400 may further include a memory 1340. The memory 1340 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 1240 is used to store relevant instructions and data.

[0286] The processor 1310 may be one or more central processing units (CPUs). When the processor 1310 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0287] When the communication apparatus 1300 is a terminal device, illustratively, the communication apparatus 1300 is used to perform the following operations: sending an SRS to a network device, etc.

[0288] When the communication device 1300 is a network device, illustratively, the communication device 1300 is used to perform the following operations: receiving an SRS from a terminal device, etc.

[0289] The above contents are only 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.

[0290] The above description is only an exemplary description. For specific content, please refer to the content shown in the above method embodiment. Fig.13 The implementation of each operation in can also refer to Figures 4 to 12 The corresponding description of the method embodiment shown.

[0291] Fig.14 1 is a schematic block diagram of a communication device 1400 of an embodiment of the present application. The communication device 1400 may be a terminal device or a network device, or may be a chip or module in the terminal device or the network device, for implementing the method involved in the above embodiment. The communication device 1400 includes a transceiver unit 1410. Optionally, the communication device 1400 also includes a processing unit 1420. The transceiver unit 1410 and the processing unit 1420 are exemplarily introduced below.

[0292] The transceiver unit 1410 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform the transmitting action of the communication device 1400, and the receiving unit is used to perform the receiving action of the communication device 1400. For ease of description, the embodiment of the present application combines the transmitting unit and the receiving unit into one transceiver unit. A unified description is given here, and no further description is given later.

[0293] 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.

[0294] When the communication device 1400 is a network device, illustratively, the transceiver unit 1410 is used to receive the SRS on at least one ninth symbol in the SRS resource, and the processing unit 1420 is used to associate the uplink scheduling with the SRS resource.

[0295] The above contents are only 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.

[0296] Optionally, the communication device 1400 further includes a storage unit 1430, and the storage unit 1430 is used to store a program or code for executing the aforementioned method.

[0297] Fig.13 and Fig.14 The device embodiment shown is used to implement Figures 4 to 12 The content described. Fig.13 and Fig.14 The specific execution steps and methods of the device shown can refer to the contents described in the aforementioned method embodiment.

[0298] Fig.15 1 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 a terminal device / network device.

[0299] The communication device 1500 includes: an input / output interface 1520 and a processor 1510. The input / output interface 1520 may be an input / output circuit. The processor 1510 may be a signal processor, a chip, or other integrated circuit that can implement the method of the present application. The input / output interface 1520 is used for inputting or outputting signals or data.

[0300] 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.

[0301] For example, when the communication device 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 an SRS resource.

[0302] 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.

[0303] Optionally, the communication device 1500 also includes a memory.

[0304] Optionally, the processor and memory are integrated together.

[0305] Optionally, the memory is outside the communication device 1500 .

[0306] In a possible implementation, the processor 1510 may be a logic circuit, and the processor 1510 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 present application.

[0307] The above description of the communication device 1500 is only an exemplary description. The communication device 1500 can be used to execute the method described in the above embodiment. The specific content can be found in the description of the above method embodiment, which will not be repeated here.

[0308] 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.

[0309] The present application also provides a chip, including: 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 used to execute the code in the memory, and when the code is executed, the processor is used to execute the method in each of the above examples. Optionally, the chip also includes a memory, and the memory is used to store computer programs or codes.

[0310] The present application also provides a processor, which is coupled to a memory and is used to execute the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0311] The present application provides a computer program product including instructions. When the computer program product is run on a computer, the method of the above embodiment is implemented.

[0312] The present application also provides a computer program. When the computer program is executed in a computer, the method of the above embodiment is implemented.

[0313] 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.

[0314] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0315] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0316] In several embodiments provided in the present 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. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the 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.

[0317] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the technical solution of the embodiment of the present application.

[0318] 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.

[0319] 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 can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform 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 USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0320] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A 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 for canceled SRS transmission 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 for canceled SRS transmission 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 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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