Reference signal transmission method and device

Abstract

The invention provides a transmission method and device of a reference signal. The transmission method of the reference signal comprises the steps that terminal equipment determines that sending of an SRS on at least one OFDM symbol in a first resource is cancelled; the terminal device determines at least one second OFDM symbol in the remaining OFDM symbols in the first resource, wherein antenna ports corresponding to the at least one second OFDM symbol comprise all antenna ports used by the terminal device for sending reference signals; and the terminal equipment sends the reference signal on the determined at least one second OFDM symbol. According to the reference signal transmission method provided by the embodiment of the invention, the accuracy of obtaining the uplink channel can be improved, and the uplink transmission performance can be ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a method and device for transmitting a reference signal. 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 (for example, the above-mentioned 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 on the previous SRS resource received, and schedules PUSCH based on the measurement results.

[0003] However, scheduling the PUSCH based on the measurement result of the SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance. Summary of the invention

[0004] The present application provides a reference signal transmission method and device, which can improve the accuracy of uplink channel acquisition and ensure uplink transmission performance.

[0005] In the first aspect, a method for transmitting a reference signal is provided. The method 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 functions of the terminal device, and the present application does not limit this.

[0006] The method includes: the terminal device determines that the sending of a first reference signal on at least one first orthogonal frequency division multiplexing (OFDM) symbol is canceled; the terminal device determines at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; the terminal device sends the first reference signal on the at least one second OFDM symbol.

[0007] Alternatively, the method includes: the terminal device determines that the priority of sending the first reference signal on the at least one first OFDM symbol is lower than the priority of sending the first transmission object on the at least one first OFDM symbol; the terminal device determines at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol outside the at least one first OFDM symbol and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; the terminal device sends the first reference signal on the at least one second OFDM symbol.

[0008] Specifically, the reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may be: the sending of the first reference signal by the terminal device on the at least one first OFDM symbol conflicts with or overlaps with the sending of the first transmission object by the terminal device on the at least one first OFDM symbol; or, the reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may also be: the priority of the terminal device sending the first reference signal on the at least one OFDM symbol is lower than the priority of the terminal device sending the first transmission object on the at least one OFDM symbol; or, the reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may also be: the transmission of the terminal device on the at least one first OFDM symbol is configured as zero power, etc. The reason why the at least one first OFDM symbol is canceled may also be other reasons, which are not limited in the present application.

[0009] 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).

[0010] Alternatively, the terminal device sends the first reference signal periodically or semi-persistently. The reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may be: the periodic or semi-persistent sending of the first reference signal by the terminal device on the at least one first OFDM symbol conflicts or overlaps with the sending of the second transmission object by the terminal device on the at least one first OFDM symbol; or, the reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may also be: the priority of the periodic or semi-persistent sending of the first reference signal by the terminal device on the at least one OFDM symbol is lower than the priority of the second transmission object by the terminal device on the at least one OFDM symbol; or, the reason why the sending of the first reference signal on the at least one first OFDM symbol is canceled may also be: the transmission of the terminal device on the at least one first OFDM symbol is configured as zero power, etc. The reason why the at least one first OFDM symbol is canceled may also be other reasons, which are not limited in this application.

[0011] Exemplarily, the second transmission object may be a PUSCH for carrying aperiodic CSI.

[0012] It should be noted that the first transmission object and the second transmission object involved below can refer to the above description of the first transmission object and the second transmission object, which will not be repeated below.

[0013] Specifically, the above-mentioned first resource may include a time slot, or may be any time-frequency resource configured by the network device, which is not limited in this application.

[0014] 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 first reference signal, and all antenna ports of the terminal device used to send the first reference signal 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.

[0015] The at least one second OFDM symbol may be part or all of the OFDM symbols other than the at least one first OFDM symbol.

[0016] Through the above method, the terminal device can send a first reference signal on at least one second OFDM symbol determined on the first resource to measure the uplink channel, which can improve the accuracy of uplink channel acquisition and ensure uplink transmission performance.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the at least one first OFDM symbol is in at least one set, and each antenna port corresponding to the set for sending the first reference signal includes all antenna ports of the terminal device. The method also includes: the terminal device cancels sending the first reference signal on all OFDM symbols in the at least one set, and the at least one second OFDM symbol is an OFDM symbol in the first resource other than all OFDM symbols in the at least one set.

[0018] Specifically, each of the at least one set may be a set of at least one OFDM symbol. Exemplarily, for a terminal device with 8 antenna ports, each set here may include 2 OFDM symbols, the first OFDM symbol corresponds to 4 antenna ports of the terminal device, and the second OFDM symbol corresponds to another 4 antenna ports of the terminal device.

[0019] By using the above method, when determining the at least one second OFDM symbol, all OFDM symbols in the set to which the at least one first OFDM symbol belongs are excluded, which can further ensure that the first reference signal sent by the at least one second OFDM symbol is available.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the part with the largest number of OFDM symbols included in the N parts.

[0021] Wherein, N is a positive integer greater than or equal to 1.

[0022] Through the above method, the number of at least one second OFDM symbol used to send the first reference signal is maximized, which can ensure the advantage of cyclic transmission of the terminal device as much as possible and improve the signal to interference plus noise ratio (SINR) of the network device receiving the first reference signal.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

[0024] It should be understood that the time corresponding to the first part is later than the time corresponding to other parts of the N parts, which may be that the time corresponding to one or more OFDM symbols included in the first part is later than the time corresponding to one or more OFDM symbols included in the other parts of the N parts.

[0025] Through the above method, the time for sending at least one second OFDM symbol of the first reference signal is as close as possible to the uplink scheduling time, so that the estimation of the uplink channel for uplink scheduling is more accurate, thereby ensuring the uplink transmission performance.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or the at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

[0027] Through the above method, the number of at least one second OFDM symbol used to send the first reference signal is maximized, which can ensure the advantage of cyclic transmission of the terminal device as much as possible and improve the signal-to-noise ratio of the network device receiving the first reference signal.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, and the at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set and the at least one second OFDM symbol.

[0029] Through the above method, the time for sending at least one second OFDM symbol of the first reference signal is as close as possible to the uplink scheduling time, so that the estimation of the uplink channel for uplink scheduling is more accurate, thereby ensuring the uplink transmission performance.

[0030] In combination with the first aspect, in certain implementations of the first aspect, all antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

[0031] Through the above method, the number of times the first reference signal is sent by the at least one second OFDM symbol is determined to be the same, which can ensure the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guarantee the uplink transmission performance.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: the terminal device cancels sending the first reference signal on the remaining OFDM symbols in the first resource except for the at least one second OFDM symbol.

[0033] By using the above method, waste of reference signal resources can be avoided.

[0034] When the terminal device cannot determine the at least one second OFDM symbol, or the at least one second OFDM symbol does not exist in the first resource except the at least one first OFDM symbol, the terminal device cancels sending the first reference signal on the first resource.

[0035] On the second aspect, a method for transmitting a reference signal is provided. The method 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.

[0036] The method includes: a terminal device determines a first power, which is the power of sending a first reference signal on at least one first OFDM symbol in a first resource, and the first power is lower than the power of sending the first reference signal on at least one second OFDM symbol in the first resource; the terminal device adjusts the power of sending the first reference signal on the at least one second OFDM symbol to the first power; the terminal device uses the first power to send the first reference signal on the first resource.

[0037] The above method is applicable to the scenario where the power of sending the first reference signal on some OFDM symbols on the first resource is limited. Through the above method, when the power of sending the first reference signal on some OFDM symbols on the first resource is limited, the terminal device will align the power of sending the first reference signal on all OFDM symbols on the first resource to the limited power before sending the first reference signal, which can ensure the power consistency of sending the first reference signal on the first resource, improve the accuracy of uplink channel measurement, and ensure uplink transmission performance.

[0038] On the third aspect, a method for transmitting a reference signal 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 functions of the terminal device, and the present application does not limit this.

[0039] The method includes: a terminal device determines a first power, where the first power is the power for sending a first reference signal on at least one first OFDM symbol in a first resource; when the first power is lower than a first threshold, the terminal device cancels sending the first reference signal on the at least one first OFDM symbol; the terminal device determines at least one second OFDM symbol, where the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol and the antenna port for sending the first reference signal corresponding to the at least one second OFDM symbol includes all antenna ports of the terminal device; the terminal device sends the first reference signal on the at least one second OFDM symbol using a second power, where the second power is the minimum power for sending the first reference signal on the at least one second OFDM symbol.

[0040] The above method is applicable to the scenario where the power of sending the first reference signal on some OFDM symbols on the first resource is severely limited. Through the above method, when the power of sending the first reference signal on some OFDM symbols on the first resource is severely limited, the terminal device cancels sending the first reference signal on the OFDM symbols with severely limited power. The terminal device selects at least one second OFDM symbol on the remaining OFDM symbols that can perform uplink channel measurement, and sends the first reference signal after aligning the power of sending the first reference signal on at least one second OFDM symbol to the minimum power of the at least one second OFDM symbol. This can ensure the power consistency of sending the first reference signal on at least one second OFDM symbol, improve the accuracy of uplink channel measurement, and ensure uplink transmission performance.

[0041] In a fourth aspect, a method for transmitting a reference signal is provided. The method can be executed by a network device, or by a module (such as a chip or circuit) in the network device, or by a logical node, logical module or software that can implement all or part of the functions of the network device. This application does not limit this.

[0042] The method includes: the network device determines that the reception of a first reference signal on at least one first OFDM symbol is canceled; the network device determines at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; the network device sends the first reference signal on the at least one second OFDM symbol.

[0043] Alternatively, the method includes: the network device determines that the priority of the terminal device sending the first reference signal on the at least one first OFDM symbol is lower than the priority of the terminal device sending the first transmission object on the at least one first OFDM symbol; the network device determines at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol outside the at least one first OFDM symbol and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; the network device receives the first reference signal on the at least one second OFDM symbol.

[0044] Specifically, the reason why the at least one first OFDM symbol is cancelled may be: the first reference signal sent by the terminal device on the at least one first OFDM symbol conflicts with or overlaps with the first transmission object sent by the terminal device on the at least one first OFDM symbol; or, the reason why the at least one first OFDM symbol is cancelled may also be: the priority of the terminal device sending the first reference signal on the at least one first OFDM symbol is lower than the priority of the terminal device sending the first transmission object on the at least one first OFDM symbol; or, the reason why the at least one first OFDM symbol is cancelled may also be: the transmission of the terminal device on the at least one first OFDM symbol is configured as zero power, etc. The reason why the at least one first OFDM symbol is cancelled may also be other reasons, which are not limited in the present application.

[0045] Alternatively, the terminal device sends the first reference signal periodically or semi-persistently. The reason why the reception of the first reference signal on the at least one first OFDM symbol is canceled may be: the periodic or semi-persistent transmission of the first reference signal by the terminal device on the at least one first OFDM symbol conflicts or overlaps with the transmission of the second transmission object by the terminal device on the at least one first OFDM symbol; or, the reason why the reception of the first reference signal on the at least one first OFDM symbol is canceled may also be: the priority of the periodic or semi-persistent transmission of the first reference signal by the terminal device on the at least one OFDM symbol is lower than the priority of the second transmission object by the terminal device on the at least one OFDM symbol; or, the reason why the reception of the first reference signal on the at least one first OFDM symbol is canceled may also be: the transmission of the terminal device on the at least one first OFDM symbol is configured as zero power, etc. The reason why the at least one first OFDM symbol is canceled may also be other reasons, which are not limited in this application.

[0046] Specifically, the above-mentioned first resource may include a time slot, or may be any time-frequency resource configured by the network device, which is not limited in this application.

[0047] 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 first reference signal, and all antenna ports of the terminal device used to send the first reference signal 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.

[0048] The at least one second OFDM symbol may be part or all of the OFDM symbols other than the at least one first OFDM symbol.

[0049] Through the above method, the network device can receive the first reference signal on at least one second OFDM symbol determined on the first resource to measure the uplink channel, which can improve the accuracy of uplink channel acquisition and ensure uplink transmission performance.

[0050] In combination with the fourth aspect, in certain implementations of the fourth aspect, the at least one first OFDM symbol is in at least one set, and each antenna port corresponding to the set for sending the first reference signal includes all antenna ports of the terminal device. The method also includes: the network device cancels receiving the first reference signal on all OFDM symbols in the at least one set, and the at least one second OFDM symbol is an OFDM symbol in the first resource other than all OFDM symbols in the at least one set.

[0051] Specifically, each of the at least one set may be a set of at least one OFDM symbol. Exemplarily, for a terminal device with 8 antenna ports, each set here may include 2 OFDM symbols, the first OFDM symbol corresponds to 4 antenna ports of the terminal device, and the second OFDM symbol corresponds to another 4 antenna ports of the terminal device.

[0052] By using the above method, when determining the at least one second OFDM symbol, all OFDM symbols in the set to which the at least one first OFDM symbol belongs are excluded, which can further ensure that the first reference signal received by the at least one second OFDM symbol is available.

[0053] In combination with the fourth aspect, in certain implementations of the fourth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the part with the largest number of OFDM symbols included in the N parts.

[0054] Wherein, N is a positive integer greater than or equal to 1.

[0055] Through the above method, the number of at least one second OFDM symbol used to send the first reference signal is maximized, which can ensure the advantage of cyclic transmission of the terminal device as much as possible and improve the signal-to-noise ratio of the network device receiving the first reference signal.

[0056] In combination with the fourth aspect, in certain implementations of the fourth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

[0057] It should be understood that the time corresponding to the first part is later than the time corresponding to other parts of the N parts, which may be that the time corresponding to one or more OFDM symbols included in the first part is later than the time corresponding to one or more OFDM symbols included in the other parts of the N parts.

[0058] Through the above method, the time for sending at least one second OFDM symbol of the first reference signal is as close as possible to the uplink scheduling time, so that the estimation of the uplink channel for uplink scheduling is more accurate, thereby ensuring the uplink transmission performance.

[0059] In combination with the fourth aspect, in certain implementations of the fourth aspect, the at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or the at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

[0060] Through the above method, the number of at least one second OFDM symbol used to send the first reference signal is maximized, which can ensure the advantage of cyclic transmission of the terminal device as much as possible and improve the signal-to-noise ratio of the network device receiving the first reference signal.

[0061] In combination with the fourth aspect, in certain implementations of the fourth aspect, the time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, and the at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDNM symbols in the at least one set and the at least one second OFDM symbol.

[0062] Through the above method, the time for sending at least one second OFDM symbol of the first reference signal is as close as possible to the uplink scheduling time, so that the estimation of the uplink channel for uplink scheduling is more accurate, thereby ensuring the uplink transmission performance.

[0063] In combination with the fourth aspect, in certain implementations of the fourth aspect, all antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

[0064] Through the above method, the number of times the first reference signal is sent by the at least one second OFDM symbol is determined to be the same, which can ensure the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device and guarantee the uplink transmission performance.

[0065] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the network device cancels receiving the first reference signal on the remaining OFDM symbols in the first resource except for the at least one second OFDM symbol.

[0066] By using the above method, waste of reference signal resources can be avoided.

[0067] When the network device cannot determine the at least one second OFDM symbol, or the at least one second OFDM symbol does not exist in the first resource except the at least one first OFDM symbol, the network device cancels receiving the first reference signal on the first resource.

[0068] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the network device associating uplink scheduling with a first reference signal received on the at least one second OFDM symbol.

[0069] Through the above method, when the network device can determine the above-mentioned at least one second OFDM symbol in the current resource, the network device can use the first reference signal received on at least one second OFDM symbol in the current resource to measure the uplink channel without using the reference signal on the previous resource, thereby ensuring the accuracy of uplink scheduling and uplink transmission performance.

[0070] In a fifth aspect, a reference signal transmission 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 processing unit, which is used to determine that the transmission of a first reference signal on at least one first OFDM symbol is cancelled, and the processing unit is also used to determine at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol, and the antenna port corresponding to the at least one second OFDM symbol for transmitting the first reference signal includes all antenna ports of the device; the device also includes: a transceiver unit, which is used to transmit the first reference signal on the at least one second OFDM symbol.

[0071] In combination with the fifth aspect, in certain implementations of the fifth aspect, the at least one first OFDM symbol is in at least one set, and each antenna port corresponding to the set for sending the first reference signal includes all antenna ports of the device, and the processing unit is also used to cancel sending the first reference signal on all OFDM symbols in the at least one set, and the at least one second OFDM symbol is an OFDM symbol in the first resource other than all OFDM symbols in the at least one set.

[0072] In combination with the fifth aspect, in certain implementations of the fifth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the part with the largest number of OFDM symbols included in the N parts.

[0073] Wherein, N is a positive integer greater than or equal to 1.

[0074] In combination with the fifth aspect, in certain implementations of the fifth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

[0075] In combination with the fifth aspect, in certain implementations of the fifth aspect, the at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or the at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

[0076] In combination with the fifth aspect, in certain implementations of the fifth aspect, the time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, and the at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDNM symbols in the at least one set and the at least one second OFDM symbol.

[0077] In combination with the fifth aspect, in certain implementations of the fifth aspect, all antenna ports of the above-mentioned device send the above-mentioned first reference signal on the above-mentioned at least one second OFDM symbol a same number of times.

[0078] In combination with the fifth aspect, in certain implementations of the fifth aspect, the processing unit is further used to cancel sending the first reference signal on the remaining OFDM symbols in the first resource except for the at least one second OFDM symbol.

[0079] The explanation of the contents related to the reference signal transmission device provided in the fifth aspect and its beneficial effects can all be referred to the reference signal transmission method shown in the first aspect, and will not be repeated here.

[0080] In a sixth aspect, a reference signal transmission 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 processing unit, which is used to determine a first power, the first power is the power of sending a first reference signal on at least one first OFDM symbol in a first resource, and the first power is lower than the power of sending the first reference signal on at least one second OFDM symbol in the first resource; the processing unit is also used to adjust the power of sending the first reference signal on the at least one second OFDM symbol to the first power; the device also includes: a transceiver unit, which is used to send the first reference signal on the first resource using the first power.

[0081] The explanation and beneficial effects of the contents related to the reference signal transmission device provided in the sixth aspect can all be referred to the reference signal transmission method shown in the second aspect, and will not be repeated here.

[0082] In the seventh aspect, a reference signal transmission 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 processing unit, which is used to determine a first power, and the first power is the power of sending a first reference signal on at least one first OFDM symbol in the first resource; when the first power is lower than the first threshold, the processing unit is also used to cancel sending the first reference signal on the at least one first OFDM symbol; the processing unit is also used to determine at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol, and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the device; the device also includes: a transceiver unit, which is used to send the first reference signal on the at least one second OFDM symbol using a second power, and the second power is the minimum power for sending the first reference signal on the at least one second OFDM symbol.

[0083] The explanation and beneficial effects of the contents related to the reference signal transmission device provided in the seventh aspect can all be referred to the reference signal transmission method shown in the third aspect, and will not be repeated here.

[0084] In an eighth aspect, a reference signal transmission 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 network device functions. The device includes: a processing unit, which is used to determine that the reception of a first reference signal on at least one first OFDM symbol is canceled; the processing unit is also used to determine at least one second OFDM symbol, the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol, and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; the device also includes: a transceiver unit, which is used to send the first reference signal on the at least one second OFDM symbol.

[0085] In combination with the eighth aspect, in certain implementations of the eighth aspect, the at least one first OFDM symbol is in at least one set, and each antenna port corresponding to the set that sends the first reference signal includes all antenna ports of the terminal device. The processing unit is also used to cancel receiving the first reference signal on all OFDM symbols in the at least one set, and the at least one second OFDM symbol is an OFDM symbol in the first resource other than all OFDM symbols in the at least one set.

[0086] In combination with the eighth aspect, in certain implementations of the eighth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the part with the largest number of OFDM symbols included in the N parts.

[0087] Wherein, N is a positive integer greater than or equal to 1.

[0088] In combination with the eighth aspect, in certain implementations of the eighth aspect, the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

[0089] In combination with the eighth aspect, in certain implementations of the eighth aspect, the at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or the at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

[0090] In combination with the eighth aspect, in certain implementations of the eighth aspect, the time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, and the at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDNM symbols in the at least one set and the at least one second OFDM symbol.

[0091] In combination with the eighth aspect, in certain implementations of the eighth aspect, all antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

[0092] In combination with the eighth aspect, in certain implementations of the eighth aspect, the processing unit is further used to cancel receiving the first reference signal on the remaining OFDM symbols in the first resource except for the at least one second OFDM symbol.

[0093] The explanation of the contents related to the reference signal transmission device provided in the eighth aspect and its beneficial effects can all be referred to the reference signal transmission method shown in the fourth aspect, and will not be repeated here.

[0094] In a ninth 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 possibility of the first aspect; or enable the communication device to perform the method described in the second aspect and any possibility of the second aspect; enable the communication device to perform the method described in the third aspect and any possibility of the third aspect; or enable the communication device to perform the method described in the fourth aspect and any possibility of the fourth aspect.

[0095] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0096] In a possible implementation manner, the communication device further includes a communication interface, which is used to input and / or output signals.

[0097] In the tenth 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 and 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; or, the logic circuit being used to execute the method described in the fourth aspect and any possibility of the fourth aspect.

[0098] In the eleventh 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 and 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; the method described in the third aspect and any possibility of the third aspect is executed; or, the method described in the fourth aspect and any possibility of the fourth aspect is executed.

[0099] In the twelfth aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect and 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; or, cause the method described in the fourth aspect and any possibility of the fourth aspect to be executed.

[0100] For the description of the beneficial effects of the fifth to twelfth aspects, reference can be made to the description of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] Figure 1 It is a schematic diagram of an example of a communication system 100 applicable to an embodiment of the present application.

[0102] Figure 2 It is a schematic diagram of an example of a cyclic repeated transmission method applicable to an embodiment of the present application.

[0103] Figure 3 It is a schematic diagram of an example of a continuous repeated transmission method applicable to an embodiment of the present application.

[0104] Figure 4 It is a schematic flowchart of an example of a reference signal transmission method 400 applicable to an embodiment of the present application.

[0105] Figure 5 It is a schematic diagram of an OFDM symbol for signal transmission applicable to an embodiment of the present application.

[0106] Figure 6 This is another example of an OFDM symbol schematic diagram of signal transmission applicable to an embodiment of the present application.

[0107] Figure 7 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0108] Figure 8 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0109] Fig. 9 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0110] Fig.10 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0111] Fig.11 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0112] Fig.12 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0113] Fig.13 This is another example of OFDM symbol schematic diagram of signal transmission applicable to the embodiment of the present application.

[0114] Fig.14It is a schematic block diagram of an example of a communication device 1400 applicable to an embodiment of the present application.

[0115] Fig.15 It is a schematic block diagram of an example of a communication device 1500 applicable to an embodiment of the present application.

[0116] Fig.16 It is a schematic block diagram of an example of a communication device 1600 applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0117] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as head-mounted XR glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include 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 function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0122] 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.

[0123] 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.

[0124] 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).

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.).

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] A time unit may be an OFDM symbol, or a mini-slot, or a slot, or a subframe, wherein the duration of a subframe in the time domain may be 1 millisecond (ms), a slot may consist of 7 or 14 OFDM symbols, and a mini-slot may include at least one OFDM symbol (for example, 2 OFDM symbols or 4 OFDM symbols or 7 OFDM symbols, or any number of symbols less than or equal to 14 OFDM symbols).

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 1. Sounding reference signal (SRS)

[0147] 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.

[0148] 2. Antenna port

[0149] 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).

[0150] 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.

[0151] 3. Repeated transmission of reference signals

[0152] 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.

[0153] 4. Dropping of reference signal transmission

[0154] 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.

[0155] 5. Coherent / incoherent capabilities

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 6. Transport layer

[0160] 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.

[0161] 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 the physical uplink control channel (PUSCH) according to the scheduling of the network device. When the transmission of the SRS on the nearest SRS resource conflicts with the first transmission object or the second transmission object, resulting in the cancellation of part or all of the SRS transmission in the SRS resource, the network device performs channel measurement based on the SRS on the previous SRS resource received, and schedules the PUSCH based on the measurement result.

[0162] However, scheduling the PUSCH based on the measurement result of the SRS on the previous SRS resource will affect the accuracy of uplink channel acquisition and uplink transmission performance.

[0163] Based on 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.

[0164] 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.

[0165] Step S410: The terminal device determines that the transmission of a first reference signal on at least one first orthogonal frequency division multiplexing (OFDM) symbol is cancelled. Accordingly, the network device determines that the reception of a first reference signal on at least one first OFDM symbol is cancelled.

[0166] Exemplarily, the reason why the sending or receiving of the first reference signal on the at least one first OFDM symbol is canceled may be: the sending of the first reference signal by the terminal device on the at least one first OFDM symbol conflicts with the sending of the first transmission object or the second transmission object by the terminal device on the at least one first OFDM symbol; or the first transmission object or the second transmission object has a higher priority on at least one OFDM symbol, so the sending of the first reference signal on the at least one first OFDM symbol is canceled; or the sending of the first reference signal on the at least one first OFDM symbol is configured as zero power. The sending or receiving of the first reference signal on the at least one first OFDM symbol may also be canceled for other reasons, which are not limited in the present application.

[0167] Alternatively, the above step S410 can be replaced by: the terminal device determines that the priority of sending the first reference signal on the above at least one first OFDM symbol is lower than the priority of sending the first transmission object or the second transmission object on the above at least one first OFDM symbol.

[0168] Exemplarily, the first reference signal may be an SRS. The first reference signal may also be other reference signals used to estimate an uplink channel, which is not limited in the present application.

[0169] Step S412: The terminal device determines at least one second OFDM symbol. Correspondingly, the network device may also determine at least one second OFDM symbol.

[0170] The at least one second OFDM symbol is an OFDM symbol in the first resource other than the at least one first OFDM symbol, and the antenna port for sending the first reference signal corresponding to the at least one second OFDM symbol includes all antenna ports of the terminal device.

[0171] The terminal device may determine at least one of the above-mentioned second OFDM symbols when the sending of the first reference signal on the above-mentioned at least one first OFDM symbol is canceled, or the terminal device may determine the above-mentioned second OFDM symbol when the priority of sending the first reference signal on the above-mentioned at least one first OFDM symbol is lower than the priority of sending the first transmission object or the second transmission object on the above-mentioned at least one first OFDM symbol, or the terminal device may determine the above-mentioned second OFDM symbol when the sending of the first reference signal on the above-mentioned at least one first OFDM symbol is configured as zero power, and the present application does not limit this.

[0172] It should be understood that the above-mentioned “all antenna ports of the terminal device” can be understood as all antenna ports of the terminal device used to send the above-mentioned first reference signal, which can be configured by a network device.

[0173] 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.

[0174] Optionally, the terminal device may also determine the at least one second OFDM symbol in the following manner:

[0175] The at least one first OFDM symbol is in at least one set, and the antenna ports for sending the first reference signal corresponding to each set include all antenna ports of the terminal device, and the terminal device cancels sending the first reference signal on all OFDM symbols in the at least one set, and the at least one second OFDM symbol is an OFDM symbol in the first resource other than all OFDM symbols in the at least one set. In this way, resource waste can be avoided.

[0176] 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. Each of the above sets includes 2 OFDM symbols, the first OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the second OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. Figure 5 As shown, the first resource includes three sets, namely set #1, set #2, and set #3. When the at least one first OFDM symbol is the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol, the at least one first OFDM symbol is in set #1 and set #2, the terminal device cancels sending the first reference signal on all OFDM symbols in set #1 and set #2, and the at least one second OFDM symbol is an OFDM symbol other than all OFDM symbols in set #1 and set #2, that is, the at least one second OFDM symbol is an OFDM symbol in set #3.

[0177] Step S414: The terminal device sends the first reference signal on the at least one second OFDM symbol. Correspondingly, the network device receives the first reference signal on the at least one second OFDM symbol.

[0178] Additionally, in a case where the at least one second OFDM symbol does not exist in the first resource except for the at least one first OFDM symbol, the terminal device cancels sending the first reference signal on the first resource.

[0179] Through the above-mentioned reference signal transmission method 400, when the first reference signal on some OFDM symbols is cancelled, determining whether there is a first reference signal in the remaining OFDM symbols that can perform normal channel measurement can increase the accuracy of uplink channel acquisition and improve uplink transmission performance.

[0180] As described above, when the transmission of the SRS on the most adjacent SRS resource (that is, the first resource) conflicts with the first transmission object or the second transmission object, the transmission of part or all of the SRS in the SRS resource is canceled. Exemplarily, when the transmission of the first reference signal on the at least one first OFDM symbol is canceled, the terminal device only cancels the transmission of the first reference signal on the at least one first OFDM symbol, such as Figure 6 As shown, or the terminal device cancels sending the first reference signal on the antenna port coherent with the antenna port corresponding to the at least one first OFDM symbol. Assume that all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. In a cyclic repetition mode, 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, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. When the sending of the first reference signal on the second OFDM symbol is canceled, the first reference signal is sent on the first OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, the fifth OFDM symbol, and the sixth OFDM symbol. However, due to the interruption of the transmission of the second OFDM symbol, the phase continuity of the first OFDM symbol and the subsequent OFDM symbols cannot be guaranteed, so that the first reference signal sent on the first OFDM symbol cannot be used, resulting in a waste of resources. For this situation, the present application provides two implementation methods:

[0181] The first implementation method is: the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the part with the largest number of OFDM symbols included in the N parts, where N is a positive integer greater than or equal to 1.

[0182] For example, Figure 7As shown, it is assumed that all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7. In the cyclic repetition mode, 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, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, etc. When the transmission of the first reference signal on the fourth OFDM symbol is canceled, the fourth OFDM divides the first resource into a first part including the first OFDM symbol, the second OFDM symbol, and the third OFDM symbol and a second part including the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol, and the eighth OFDM symbol. In order to maintain the advantage of cyclic transmission as much as possible, the at least one second OFDM symbol determined by the terminal device is a part including the largest number of OFDM symbols, that is, Figure 7 The second part is shown.

[0183] Alternatively, the terminal device determines that the transmission of the first reference signal on the fourth OFDM symbol is canceled, and the fourth OFDM symbol is in set #2, and the terminal device cancels the transmission of the first reference signal on all OFDM symbols in set #2. The set #2 divides the first resource into a first part including the first OFDM symbol and the second OFDM symbol and a second part including the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol, and the eighth OFDM symbol. In order to maintain the advantage of cyclic transmission as much as possible, the at least one second OFDM symbol determined by the terminal device is the part including the largest number of OFDM symbols, that is, Figure 8 The second part is shown.

[0184] The second implementation method is: the at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the above N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the above N parts.

[0185] For example, Fig. 9As shown, it is assumed that all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. In a cyclic repetition mode, 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, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, etc. When the transmission of the first reference signal on the fourth OFDM symbol is canceled, the fourth OFDM divides the first resource into a first part including the first OFDM symbol, the second OFDM symbol, and the third OFDM symbol and a second part including the fifth OFDM symbol and the sixth OFDM symbol. In order to ensure the accuracy of the uplink channel measurement, the at least one second OFDM symbol determined by the terminal device is a part closest to the time of the uplink scheduling, that is, Figure 8 The second part shown (ie, an example of the first part) is shown in FIG. 1 , wherein the time corresponding to the OFDM symbols included in the second part is later than the time corresponding to the OFDM symbols included in the first part.

[0186] The above two implementations may be used alone or in combination, and this application does not limit this.

[0187] When the transmission interruption of the middle OFDM symbol can ensure the phase continuity of the previous and next OFDM symbols, the present application may also provide two implementation methods for determining the at least one second OFDM symbol;

[0188] The first implementation method is: Fig.10 As shown, it is assumed that all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. In the cyclic repetition mode, 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, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, and so on. When the transmission of the first reference signal on the second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol is canceled, in order to maintain the advantage of cyclic transmission as much as possible, the terminal device determines the at least one second OFDM symbol to be the first resource except for the at least one first OFDM symbol (that is, Fig.10 All OFDM symbols except the second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol shown in FIG. 1 , so the at least one second OFDM symbol is Fig.10 The first OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol, and the eighth OFDM symbol are shown.

[0189] Or, if Fig.11 As shown. The terminal device determines that the transmission of the first reference signal on the second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol is canceled. The second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol are in set #1, set #2, and set #3. The terminal device cancels the transmission of the first reference signal on all OFDM symbols in set #1, set #2, and set #3. In order to maintain the advantage of cyclic transmission as much as possible, the at least one second OFDM symbol determined by the terminal device is all OFDM symbols in the first resource except set #1, set #2, and set #3, that is, Fig.11 The seventh and eighth OFDM symbols in set #4 are shown.

[0190] The second implementation is:

[0191] The time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol.

[0192] For example, Fig.10 As shown, it is assumed that all antenna ports of the terminal device are 8 antenna ports, which are numbered 0, 1, 2, 3, 4, 5, 6, and 7 respectively. In a cyclic repetition mode, 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, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, and so on. When the transmission of the first reference signal on the second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol is canceled. In order to ensure the accuracy of the uplink channel measurement, at least one second OFDM symbol determined by the terminal device is a part of the time closest to the uplink scheduling, that is, Fig.10The seventh OFDM symbol and the eighth OFDM symbol shown, or the sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol, or the first OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol. When the at least one second OFDM symbol determined by the terminal device is Fig.10 The seventh OFDM symbol and the eighth OFDM symbol shown, the at least one third OFDM symbol is the first OFDM symbol and the sixth OFDM symbol; when the at least one second OFDM symbol determined by the terminal device is Fig.10 The sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol shown, the at least one third OFDM symbol is the first OFDM symbol.

[0193] Or, if Fig.11 As shown. The terminal device determines that the transmission of the first reference signal on the second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol is canceled. The second OFDM symbol, the third OFDM symbol, the fourth OFDM symbol, and the fifth OFDM symbol are in set #1, set #2, and set #3. The terminal device cancels the transmission of the first reference signal on all OFDM symbols in set #1, set #2, and set #3. In order to ensure the accuracy of the uplink channel measurement, the at least one second OFDM symbol determined by the terminal device is the OFDM symbol in set #4 that is closest to the uplink scheduling time.

[0194] The above two implementations may be used alone or in combination, and this application does not limit this.

[0195] Additionally, all antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

[0196] For example, Figure 7 and Figure 8 As shown, the at least one second OFDM symbol determined is the fifth OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol, and the eighth OFDM symbol included in the second part. Among them, the fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. That is, antenna ports 0 to 3 of the terminal device send the first reference signal on the fifth OFDM symbol and the seventh OFDM symbol, and antenna ports 4 to 7 of the terminal device send the first reference signal on the sixth OFDM symbol and the eighth OFDM symbol.

[0197] For example, Fig. 9 As shown, the at least one second OFDM symbol determined is the fifth OFDM symbol and the sixth OFDM symbol included in the second part. The fifth OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. That is, antenna ports 0 to 3 of the terminal device send the first reference signal on the fifth OFDM symbol, and antenna ports 4 to 7 of the terminal device send the first reference signal on the sixth OFDM symbol.

[0198] For example, Fig.10 As shown, when the at least one second OFDM symbol determined is the sixth OFDM symbol, the seventh OFDM symbol, and the eighth OFDM symbol, the sixth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device, the seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. That is, antenna ports 0 to 3 of the terminal device send the first reference signal on the seventh OFDM symbol, and antenna ports 4 to 7 of the terminal device send the first reference signal on the sixth OFDM symbol and the eighth 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 OFDM symbol is not the same, and the accuracy of the uplink channel measurement corresponding to each antenna port of the terminal device cannot be guaranteed. Therefore, Fig.10 The at least one second OFDM symbol determined in is preferably the first OFDM symbol, the sixth OFDM symbol, the seventh OFDM symbol and the eighth OFDM symbol, or, Fig.10 The at least one second OFDM symbol determined in is preferably the seventh OFDM symbol and the eighth OFDM symbol.

[0199] For example, Fig.11 As shown, the at least one second OFDM symbol determined is the seventh OFDM symbol and the eighth OFDM symbol. The seventh OFDM symbol corresponds to antenna ports 0 to 3 of the terminal device, and the eighth OFDM symbol corresponds to antenna ports 4 to 7 of the terminal device. That is, antenna ports 0 to 3 of the terminal device send the first reference signal on the seventh OFDM symbol, and antenna ports 4 to 7 of the terminal device send the first reference signal on the eighth OFDM symbol.

[0200] The above embodiment describes a scenario in which the first reference signal on some or all OFDM symbols of uplink transmission is canceled when the first reference signal of uplink transmission conflicts with the above-mentioned first transmission object or second transmission object with a higher priority; the following describes a scenario in which when there are multiple uplink transmissions, the transmission of the first reference signal on some OFDM symbols requires power scaling due to factors such as power limitation.

[0201] For example, in a multi-carrier aggregation (CA) transmission scenario, multiple cells in different frequency bands are combined to transmit data. Each of the multiple cells is called a component carrier (CC), and the multiple cells can be CC1, CC2, ..., CCn. Since there are multiple transmissions on some OFDM symbols at the same time, it is necessary to reduce the power transmission for CC1.

[0202] like Fig.12 As shown, there are multiple transmissions on the first OFDM symbol and the second OFDM symbol of CC1 at the same time, so the power is reduced. In order to maintain the power consistency of sending the first reference signal on the first resource, how much power other OFDM symbols use to send the first reference signal to ensure the estimation of the uplink channel has not yet been related to the technical solution. Based on this, the embodiment of the present application provides an implementation method, such as Fig.12 As shown:

[0203] The terminal device determines a first power, where the first power is at least one OFDM symbol in the first resource ( Fig.12 The first OFDM symbol and the second OFDM symbol shown in the figure) transmit a power of a first reference signal, the first power being lower than at least one other OFDM symbol ( Fig.12 The terminal device adjusts the power of sending the first reference signal on at least one other OFDM symbol in the first resource to the first power. The terminal device sends the first reference signal on the first resource using the first power.

[0204] Through the above method, when the power of sending reference signals on some OFDM symbols is reduced, the power of sending reference signals on other OFDM symbols in the resource can be aligned with the power of sending reference signals on this part of the OFDM symbols, and then the reference signals are sent uniformly on the resource, thereby ensuring the accuracy of channel estimation of multiple antenna ports.

[0205] When the power limitation on some OFDM symbols is severe, the embodiment of the present application may provide an implementation method, such as Fig.13As shown: The terminal device determines a first power, and the first power is at least one first OFDM symbol in the first resource ( Fig.13 The terminal device determines at least one second OFDM symbol, and the at least one second OFDM symbol is an OFDM symbol other than the at least one first OFDM symbol in the first resource, and the antenna port for sending the first reference signal corresponding to the at least one second OFDM symbol includes all antenna ports of the terminal device. The terminal device sends the first reference signal on at least one second OFDM symbol using a second power, and the second power is the minimum power for sending the first reference signal on at least one second OFDM symbol.

[0206] Among them, the above-mentioned first threshold can be preset or stipulated by the protocol, and this application does not limit this.

[0207] Specifically, how to determine Fig.13 The method of at least one second OFDM in the above Figures 4 to 11 The description is not repeated here.

[0208] Through the above method, the reference signal sent on the OFDM symbol with severe power limitation is cancelled, and the reference signal sent on other OFDM symbols is guaranteed to be recognized and demodulated by the network equipment as much as possible, thereby improving the accuracy of channel measurement.

[0209] Finally, the device embodiment of the embodiment of the present application is introduced.

[0210] 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.

[0211] Fig.14 14 is a schematic block diagram of a communication device 1400 according to an embodiment of the present application. The communication device 1400 includes a processor 1410 and a communication interface 1420, and the processor 1410 and the communication interface 1420 may be interconnected via a bus 1430. The communication device 1400 may be a terminal device or a network device.

[0212] Optionally, the communication device 1400 may further include a memory 1440. The memory 1440 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.

[0213] The processor 1410 may be one or more central processing units (CPUs). When the processor 1410 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0214] When the communication device 1400 is a terminal device, illustratively, the communication device 1400 is used to perform the following operations: sending a first reference signal to a network device, etc.

[0215] When the communication device 1400 is a network device, illustratively, the communication device 1400 is used to perform the following operations: receiving a first reference signal from a terminal device, etc.

[0216] The above contents are only exemplary descriptions. When the communication device 1400 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.

[0217] The above description is only an exemplary description. For specific content, please refer to the content shown in the above method embodiment. Fig.14 The implementation of each operation in can also refer to Figures 4 to 13 The corresponding description of the method embodiment shown.

[0218] 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 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 1300 includes a transceiver unit 1510. The transceiver unit 1510 and the processing unit 1520 are exemplarily introduced below.

[0219] The transceiver unit 1510 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform the transmitting action of the communication device 1500, and the receiving unit is used to perform the receiving action of the communication device 1500. 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.

[0220] When the communication apparatus 1500 is a terminal device, illustratively, the transceiver unit 1510 is used to send a first reference signal to a network device, and the processing unit 1520 determines at least one second OFDM symbol.

[0221] When the communication device 1300 is a network device, illustratively, the transceiver unit 1510 is used to receive a first reference signal from a terminal device, and the processing unit 1520 is used to determine at least one second OFDM symbol.

[0222] The above contents are only exemplary descriptions. When the communication device 1500 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.

[0223] Optionally, the communication device 1500 further includes a storage unit 1530, which is used to store a program or code for executing the aforementioned method.

[0224] Fig.14 and Fig.15 The device embodiment shown is used to implement Figures 4 to 13 The content described. Fig.14 and Fig.15 The specific execution steps and methods of the device shown can refer to the contents described in the aforementioned method embodiment.

[0225] Fig.16 1 is a schematic block diagram of a communication device 1600 according to an embodiment of the present application. The communication device 1600 is used to implement the functions of a terminal device / network device. The communication device 1600 may be a chip in a terminal device / network device.

[0226] The communication device 1600 includes: an input / output interface 1620 and a processor 1610. The input / output interface 1620 may be an input / output circuit. The processor 1610 may be a signal processor, a chip, or other integrated circuit that can implement the method of the present application. The input / output interface 1620 is used for inputting or outputting signals or data.

[0227] For example, when the communication device 1600 is a terminal device, the input / output interface 1620 is used to send a first reference signal to a network device. The processor 1610 is used to determine at least one second OFDM symbol.

[0228] For example, when the communication device 1600 is a network device, the input / output interface 1620 is used to receive a first reference signal from a terminal device. The processor 1610 is used to determine at least one second OFDM symbol.

[0229] In one possible implementation, the processor 1610 implements the functions implemented by the terminal device or the network device by executing instructions stored in the memory.

[0230] Optionally, the communication device 1600 also includes a memory.

[0231] Optionally, the processor and memory are integrated together.

[0232] Optionally, the memory is outside the communication device 1600 .

[0233] In a possible implementation, the processor 1610 may be a logic circuit, and the processor 1610 inputs / outputs messages or signals through the input / output interface 1620. 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.

[0234] The above description of the communication device 1600 is only an exemplary description. The communication device 1600 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] 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.

[0245] 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.

[0246] 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 is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable 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.

[0247] 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: The method comprises: Determining that the transmission of a first reference signal on at least one first orthogonal frequency division multiplexing (OFDM) symbol is cancelled; Determine at least one second OFDM symbol, where the at least one second OFDM symbol is an OFDM symbol in the first resource other than the at least one first OFDM symbol, and the antenna port corresponding to the at least one second OFDM symbol for sending the first reference signal includes all antenna ports of the terminal device; The first reference signal is sent on the at least one second OFDM symbol.

2. The method according to claim 1, characterized in that The at least one first OFDM symbol is in at least one set, and the antenna ports corresponding to each of the sets for sending the first reference signal include all antenna ports of the terminal device, and the method further includes: Sending of the first reference signal on all OFDM symbols in the at least one set is canceled, and the at least one second OFDM symbol is an OFDM symbol in the first resource except all OFDM symbols in the at least one set.

3. The method according to claim 1 or 2, characterized in that: The at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is a part with the largest number of OFDM symbols among the N parts, Wherein, N is a positive integer greater than or equal to 1.

4. The method according to any one of claims 1 to 3, characterized in that The at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

5. The method according to claim 1 or 2, characterized in that: The at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or, The at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

6. The method according to claim 1, 2 or 5, characterized in that: The time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, The at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set and the at least one second OFDM symbol.

7. The method according to any one of claims 2 to 6, characterized in that All antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The sending of the first reference signal on remaining OFDM symbols in the first resource except the at least one second OFDM symbol is canceled.

9. A communication method, characterized in that: The method comprises: Determining that reception of a first reference signal on at least one first orthogonal frequency division multiplexing (OFDM) symbol is cancelled; Determine at least one second OFDM symbol, where the at least one second OFDM symbol is an OFDM symbol in the first resource other than the at least one first OFDM symbol, and the antenna ports corresponding to the at least one second OFDM symbol for sending the first reference signal include all antenna ports of the terminal device; The first reference signal is received on the at least one second OFDM symbol.

10. The method according to claim 9, characterized in that The at least one first OFDM symbol is in at least one set, and the antenna ports corresponding to each of the sets for sending the first reference signal include all antenna ports of the terminal device, and the method further includes: Receiving the first reference signal on all OFDM symbols in the at least one set is canceled, and the at least one second OFDM symbol is an OFDM symbol in the first resource except all OFDM symbols in the at least one set.

11. The method according to claim 9 or 10, characterized in that: The at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is a part with the largest number of OFDM symbols among the N parts, Wherein, N is a positive integer greater than or equal to 1.

12. The method according to any one of claims 9 to 11, characterized in that The at least one first OFDM symbol divides the first resource into N parts, each of the N parts includes one or more OFDM symbols, each of the N parts does not include the at least one first OFDM symbol, and the at least one second OFDM symbol is the first part of the N parts, and the time corresponding to the first part is later than the time corresponding to other parts of the N parts.

13. The method according to claim 9 or 10, characterized in that: The at least one second OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol, or, The at least one second OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set.

14. The method according to claim 9, 10 or 13, characterized in that: The time corresponding to the at least one second OFDM symbol is later than the time corresponding to the at least one third OFDM symbol, The at least one third OFDM symbol is all OFDM symbols in the first resource except the at least one first OFDM symbol and the at least one second OFDM symbol, or the at least one third OFDM symbol is all OFDM symbols in the first resource except all OFDM symbols in the at least one set and the at least one second OFDM symbol.

15. The method according to any one of claims 10 to 14, characterized in that All antenna ports of the terminal device send the first reference signal on the at least one second OFDM symbol the same number of times.

16. The method according to any one of claims 9 to 15, characterized in that The method further comprises: Receiving the first reference signal on remaining OFDM symbols in the first resource except for the at least one second OFDM symbol is canceled.

17. The method according to any one of claims 9 to 16, characterized in that The method comprises: Associating uplink scheduling with the first reference signal received on the at least one second OFDM symbol.

18. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, The communication device is enabled to execute the method according to any one of claims 1 to 8.

19. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, The communication device is enabled to execute the method according to any one of claims 9 to 17.

20. The communication device according to claim 18 or 19, characterized in that: The communication device further comprises a memory for storing the computer program or instructions.

21. The communication device according to claim 18 or 19, characterized in that: The communication device further comprises a communication interface, and the communication interface is used for inputting and / or outputting signals.

22. 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 8 is performed; or, The method according to any one of claims 9 to 17 is performed.

23. 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 8 is performed; or, The method according to any one of claims 9 to 17 is performed.

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