A method and device for determining an uplink demodulation reference signal port

Abstract

The disclosed embodiment of the present invention discloses a method and device for determining an uplink demodulation reference signal port, which can be applied to NR and other systems. The method includes: a terminal device with a multi-antenna panel simultaneously transmits STxMP in the uplink in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and a network side device receives DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device according to a demodulation reference signal DMRS port allocation table; wherein the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for determining an uplink demodulation reference signal port. Background Art

[0002] Multi-point collaboration is still an important technical means in the New Radio (NR) system. Multi-point collaboration can improve the coverage of the cell edge and provide a more balanced service quality in the service area. From the perspective of network morphology, network deployment with a large number of distributed access points and centralized baseband processing will be more conducive to providing a balanced user experience rate and significantly reduce the delay and signaling overhead caused by handover. With the increase of frequency bands, relatively dense access point deployment is also required from the perspective of ensuring network coverage. In high frequency bands, with the improvement of the integration of active antenna equipment, modular active antenna arrays will be more inclined to be adopted. The antenna array of each transmission reception point (TRP) can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. The antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of the link connection, it is also possible to utilize the collaboration between multiple TRPs or panels to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect. Summary of the invention

[0003] The embodiments of the present disclosure provide a method and apparatus for determining an uplink demodulation reference signal port, which can be applied to NR systems, etc., and can solve the problem of how to support higher throughput and more reliable transmission performance through simultaneous uplink transmission of multiple TRPs or panels (multi-panel / multi-TRP).

[0004] In a first aspect, an embodiment of the present disclosure provides a method for determining an uplink demodulation reference signal port, the method being performed by a terminal device having a multi-antenna panel, the method comprising:

[0005] Simultaneous uplink transmission of STxMP in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and receiving DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device by a network side device according to a demodulation reference signal DMRS port allocation table;

[0006] Among them, the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

[0007] In this technical solution, DMRS port allocation information for indicating multiple DMRS ports is allocated to terminal devices based on multiple panels, so that the terminal devices can determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRPs. This can achieve enhancement of the flexible allocation indication of DMRS ports that can support single-user multiple input and output (SU-MIMO) and multi-user multiple input and output (MU-MIMO) under the SDM transmission multiplexing mode, thereby providing a multi-panel uplink simultaneous transmission solution based on a single DCI, and solving the problem of how to use multiple TRPs or panels for simultaneous uplink transmission to support higher throughput and more reliable transmission performance in the uplink enhancement of version Rel-18.

[0008] In one implementation, the single DCI also includes an antenna port indication field, and the antenna port indication field can also be used to indicate the total transmission rank RANK number corresponding to the transmission of PUSCH, and the total RANK number is greater than 1; the method also includes: according to the antenna port indication field and the DMRS port allocation information, determining the DMRS port information configured for the PUSCH transmission timing associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP.

[0009] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein, according to the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined, including: according to the DMRS port set, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are determined in a default manner; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4.

[0010] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information at least includes a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set is mapped to the RANK combination supported by the multiple PUSCH transmission opportunities; wherein, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: according to the DMRS port set and the mapping relationship, a default predefined method is used to respectively determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein, the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0011] In a possible implementation manner, the DMRS port allocation information includes at least:

[0012] A DMRS port set allocated to the terminal device;

[0013] Additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by the multiple PUSCH transmission opportunities.

[0014] In a possible implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including:

[0015] According to the DMRS port set and the mapping relationship, determine the number of DMRS ports that are sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0016] In a possible implementation manner, the DMRS port allocation information includes at least:

[0017] A DMRS port set allocated to the terminal device;

[0018] Additional indication information, where the additional indication information is used to indicate a DMRS port occupied by a first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0019] In a possible implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including:

[0020] According to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0021] In one implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein, according to the antenna port indication field and the DMRS port allocation information, determining that the PUSCH transmission opportunity configuration associated with different beams in different panels facing different transmitting and receiving points TRP includes:

[0022] According to the DMRS port set, the number of DMRS ports allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are determined in a default manner respectively; wherein the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 2.

[0023] In one implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set is mapped to the RANK combination supported by the multiple PUSCH transmission opportunities; wherein, according to the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined, including:

[0024] According to the DMRS port set and the mapping relationship, a default predefined method is used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein, the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0025] In a possible implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including:

[0026] According to the DMRS port set and the mapping relationship, determine the number of DMRS ports that are sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0027] In a possible implementation, the PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including:

[0028] According to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0029] In a possible implementation manner, the first RANK combination is a 1+3 or 3+1 RANK combination.

[0030] In one implementation, the single DCI further includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein:

[0031] The at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to the multiple PUSCH transmission opportunities;

[0032] The antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0033] In a possible implementation, the method further includes:

[0034] According to the at least one SRI and / or TPMI indication field and the antenna port indication field, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined.

[0035] In a possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein:

[0036] The first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity;

[0037] The second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0038] In a possible implementation manner, the determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by the PUSCH in different panels for different transmitting and receiving points TRP includes:

[0039] Determine the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field;

[0040] According to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively.

[0041] In a possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field.

[0042] Among them, the code point of the SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission timing, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission timing.

[0043] In a possible implementation manner, the determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by the PUSCH in different panels for different transmitting and receiving points TRP includes:

[0044] According to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively in a predefined manner.

[0045] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0046] In a possible implementation manner, the determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by the PUSCH in different panels for different transmitting and receiving points TRP includes:

[0047] According to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively.

[0048] In a second aspect, an embodiment of the present disclosure provides another method for determining an uplink demodulation reference signal port, the method being executed by a network side device, the method comprising:

[0049] Allocating DMRS port allocation information for indicating multiple DMRS ports to a terminal device having a multi-antenna panel according to a demodulation reference signal DMRS port allocation table;

[0050] A single downlink control information DCI is sent to the terminal device; the single DCI includes the DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

[0051] In this technical solution, DMRS port allocation information for indicating multiple DMRS ports is allocated to terminal devices based on multiple panels through network-side devices, so that the terminal devices can determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP. This can achieve enhancement of DMRS port flexible allocation indication that can support single-user multiple input and output (SU-MIMO) and multi-user multiple input and output (MU-MIMO) under the SDM transmission multiplexing mode, thereby providing a multi-panel uplink simultaneous transmission solution based on a single DCI, and solving the problem of how to use multiple TRPs or panels for uplink simultaneous transmission in the uplink enhancement of version Rel-18 to support higher throughput and more reliable transmission performance.

[0052] In one implementation, the single DCI further includes an antenna port indication field, where the antenna port indication field is used to indicate a total transmission rank RANK number corresponding to the transmission of the PUSCH, and the total RANK number is greater than 1.

[0053] In a possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a set of DMRS ports allocated to the terminal device.

[0054] In a possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by the multiple PUSCH transmission opportunities.

[0055] In a possible implementation manner, the DMRS port allocation information includes at least:

[0056] A DMRS port set allocated to the terminal device;

[0057] Additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by the multiple PUSCH transmission opportunities.

[0058] In a possible implementation manner, the DMRS port allocation information includes at least:

[0059] A DMRS port set allocated to the terminal device;

[0060] Additional indication information, where the additional indication information is used to indicate a DMRS port occupied by a first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0061] In a possible implementation manner, the single DCI further includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein the at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to the multiple PUSCH transmission opportunities;

[0062] The antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0063] In a possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; and the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0064] In one possible implementation, the PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of the one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0065] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0066] In a third aspect, an embodiment of the present disclosure provides a communication device, which has some or all of the functions of the terminal device in the method described in the first aspect above. For example, the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0067] In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is used to couple with the transceiver module and the processing module, and store the computer programs and data necessary for the communication device.

[0068] As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

[0069] In a fourth aspect, an embodiment of the present disclosure provides another communication device, which has some or all of the functions of the network side device in the method example described in the second aspect above, such as the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0070] In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is used to couple with the transceiver module and the processing module, and store the computer programs and data necessary for the communication device.

[0071] As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

[0072] In a fifth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

[0073] In a sixth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

[0074] In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

[0075] In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

[0076] In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to execute the code instructions to enable the device to execute the method described in the first aspect above.

[0077] In a tenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0078] In the eleventh aspect, an embodiment of the present disclosure provides an uplink demodulation reference signal port determination system, the system comprising the communication device described in the third aspect and the communication device described in the fourth aspect, or the system comprising the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system comprising the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system comprising the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0079] In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the first aspect.

[0080] In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network side device, and when the instructions are executed, the network side device executes the method described in the above-mentioned second aspect.

[0081] In a fourteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0082] In a fifteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0083] In a sixteenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0084] In a seventeenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support a network-side device to implement the functions involved in the second aspect, for example, to determine or process at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the network-side device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0085] In an eighteenth aspect, the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect.

[0086] In a nineteenth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0088] Figure 1 This is an example diagram of a front-load DMRS pattern in the case of configuration type 1 and 1 symbol provided in an embodiment of the present disclosure;

[0089] Figure 2 This is an example diagram of a front-load DMRS pattern in the case of configuration type 1 and 2 symbols provided in an embodiment of the present disclosure;

[0090] Figure 3 This is an example diagram of a front-load DMRS pattern in the case of configuration type 2 and 1 symbol provided in an embodiment of the present disclosure;

[0091] Figure 4 This is an example diagram of a front-load DMRS pattern in the case of configuration type 2 and 2 symbols provided in an embodiment of the present disclosure;

[0092] Figure 5 It is a logic diagram of implementing multi-panel transmission based on a single DCI provided by an embodiment of the present disclosure;

[0093] Figure 6 This is an example diagram of scheduling and transmitting multi-layer data using two codewords CW provided by an embodiment of the present disclosure;

[0094] Figure 7 A schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0095] Figure 8 It is a flow chart of a method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure;

[0096] Fig. 9 It is a flowchart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure;

[0097] Fig.10 It is a flowchart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure;

[0098] Fig.11 It is a flowchart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure;

[0099] Fig.12 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0100] Fig.13 is a schematic diagram of the structure of another communication device provided by an embodiment of the present disclosure;

[0101] Fig.14 It is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0102] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limitations on the present disclosure. In the description of the present disclosure, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0103] In order to improve the coverage at the cell edge and provide a more balanced service quality in the service area, multi-point collaboration is still an important technical means in the New Radio (NR) system. From the perspective of network morphology, network deployment with a large number of distributed access points and centralized baseband processing will be more conducive to providing a balanced user experience rate and significantly reduce the delay and signaling overhead caused by handover. With the increase of frequency bands, relatively dense access point deployment is also required from the perspective of ensuring network coverage. In high frequency bands, with the improvement of the integration of active antenna equipment, modular active antenna arrays will be more inclined to be adopted. The antenna array of each transmission reception point (TRP) can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. The antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of the link connection, it is also possible to utilize the collaboration between multiple TRPs or panels to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0104] According to the mapping relationship between the transmitted signal stream and multiple TRPs / panels, multi-point cooperative transmission technology can be divided into coherent and incoherent transmission. In coherent transmission, each data layer is mapped to multiple TRPs / panels through a weighted vector. In incoherent transmission, each data stream is only mapped to part of the TRP / panel. Coherent transmission has higher requirements for the synchronization between transmission points and the transmission capacity of the backhaul link, and is therefore more sensitive to many non-ideal factors in real deployment conditions. Relatively speaking, incoherent transmission is less affected by the above factors, so it is the key consideration for multi-point transmission technology.

[0105] It should be noted that in the Rel-15 version of the NR system, the research and standardization work on multiple transmission reception points (MTRP) has not been fully carried out. The Rel-16 version mainly focuses on the standardization of the physical downlink shared channel (PDSCH). The Rel-17 version enhances the standardization of MTRP for the uplink PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel), but only standardizes the TDM (time division multiplexing) transmission scheme. The current version Rel-18 considers the simultaneous transmission enhancement of PUSCH / PUCCH based on multi-panel terminal MTRP.

[0106] The concept of DMRS (Demodulation Reference Signal) is introduced below.

[0107] For PDSCH / PUSCH channels, the data layer of data transmission corresponds to the DMRS port used for demodulation. The DMRS design of data channels (PDSCH / PUSCH) in NR systems mainly includes the following aspects:

[0108] 1. Front-load DMRS: In each scheduling time unit, the first appearance of DMRS should be as close to the scheduling start point as possible. The use of front-load DMRS helps the receiving side to quickly estimate the channel and perform reception detection, which plays an important role in reducing latency and supporting the so-called self-contained structure. Depending on the total number of orthogonal DMRS ports, front-load DMRS can occupy up to two consecutive OFDM symbols.

[0109] 2. Additional DMRS: For low mobility scenarios, front-load DMRS can obtain channel estimation performance that meets demodulation requirements with lower overhead. However, the mobile speed considered by the NR system can reach up to 500km / h. Faced with such a large dynamic range of mobility, in addition to front-load DMRS, in medium / high speed scenarios, more DMRS symbols need to be inserted during the scheduling duration to meet the estimation accuracy of channel time variability. To address this problem, the NR system adopts a DMRS structure that combines front-load DMRS with additional DMRS with configurable time domain density. The pattern of each group of additional DMRS is a repetition of the front-load DMRS.

[0110] In each scheduling time unit, if there is additional DMRS, the pattern of each group of additional DMRS is consistent with the front-load DMRS. Therefore, the pattern design of the front-load DMRS is the basis of DMRS design. The design ideas of front-load DMRS are divided into two categories, of which the first category (type 1) adopts the COMB (comb teeth) + OCC (orthogonal superposition code) structure, and the second category (type 2) is based on the FDM (frequency division multiplexing) + OCC structure.

[0111] Depending on the number of orthogonal ports used for transmission, the front-load DMRS can be configured to be up to two OFDM symbols. Considering the power efficiency, when using two-symbol front-load DMRS, TD-OCC (Totally Orthogonal Overlay Code) is used in the time domain in addition to CS or OCC in the frequency domain. Figures 1 to 4 As shown in FIG. 1 , there are two examples of front-load DMRS patterns of configuration types. Figure 1 This is an example diagram of a front-load DMRS pattern for configuration type 1, 1 symbol; Figure 2 This is an example diagram of the front-load DMRS pattern for configuration type 1 and 2 symbols; Figure 3 This is an example of a front-load DMRS pattern for configuration type 2, 1 symbol; Figure 4 This is an example diagram of the front-load DMRS pattern for configuration type 2, with 2 symbols.

[0112] In medium / high speed scenarios, in addition to the front-load DMRS, more DMRS symbols need to be inserted within the scheduling duration to meet the estimation accuracy of the channel time variability. The NR system adopts a DMRS structure that combines the front-load DMRS with additional DMRS with configurable time domain density. The pattern of each group of additional DMRS is a repetition of the front-load DMRS. Therefore, consistent with the front-load DMRS, each group of additional DMRS can occupy up to two consecutive DMRS symbols. Depending on the specific usage scenario, up to three groups of additional DMRS can be configured in each scheduling. The number of Additional DMRS depends on the high-level parameter configuration and the specific scheduling duration.

[0113] The concept of QCL (Quasi-colocation) is introduced below.

[0114] Quasi co-location (QCL) means that the large-scale parameters of the channel experienced by the symbols on one antenna port can be inferred from the channel experienced by the symbols on another antenna port. The large-scale parameters may include delay spread, average delay, Doppler spread, Doppler shift, average gain, and spatial reception parameters.

[0115] The concept of QCL was introduced with the emergence of Coordinated Multiple Point transmission (CoMP) technology. The multiple sites involved in the CoMP transmission process may correspond to multiple sites with different geographical locations or multiple sectors with different antenna panel orientations. For example, when a terminal receives data from different sites, the spatial differences between the sites will lead to differences in the large-scale channel parameters of the receiving links from different sites, such as Doppler frequency deviation, delay spread, etc. The large-scale parameters of the channel will directly affect the adjustment and optimization of the filter coefficients during channel estimation. Different channel estimation filter parameters should be used to adapt to the corresponding channel propagation characteristics for signals sent by different sites.

[0116] Therefore, although the differences in spatial position or angle of each site are transparent to the UE (terminal equipment) and the CoMP operation itself, the impact of the above spatial differences on the large-scale parameters of the channel is an important factor that the UE needs to consider when performing channel estimation and reception detection. The so-called QCL of two antenna ports in the sense of certain large-scale parameters means that these large-scale parameters of the two ports are the same. In other words, as long as some large-scale parameters of the two ports are consistent, regardless of whether there are differences in their actual physical positions or the corresponding antenna panel orientations, the terminal can assume that the two ports are emitted from the same position (i.e., quasi-co-site).

[0117] For some typical application scenarios, considering the possible QCL relationship between various reference signals, from the perspective of simplifying signaling, NR divides several channel large-scale parameters into the following four types to facilitate system configuration / indication according to different scenarios:

[0118] 1) QCL-TypeA: {Doppler shift, Doppler spread, average delay, delay spread}; among them, other large-scale parameters except the spatial reception parameters are the same; for frequency bands below 6 GHz, spatial reception parameters may not be required.

[0119] 2) QCL-TypeB: {Doppler frequency shift, Doppler extension};

[0120] 3) QCL-TypeC: {Doppler frequency shift, average delay}

[0121] 4) QCL-TypeD: {spatial reception parameter}; As mentioned above, since this parameter is mainly for the frequency band above 6 GHz, it is regarded as a separate QCL type.

[0122] It can be understood that in the Multi-TRP scenario, the uplink enhancement of the Rel-17 standard supports the repeated transmission of PUSCH / PUCCH channels, and can transmit uplink channels to different base station-side TRPs in different uplink beam directions by adopting TDM multiplexing.

[0123] At present, the bottleneck of the communication system is still the uplink transmission rate and coverage, etc. Therefore, for the system enhancement direction of the Rel-18 standard, the main consideration is to use multiple panel terminals for simultaneous uplink transmission in the Multi-TRP scenario to increase the uplink rate and further improve the reliability of transmission. The transmission can be scheduled based on a DCI carried by a PDCCH channel, or different DCIs carried by different PDCCHs can be considered for separate scheduling. The synchronous transmission scheme currently considered is mainly based on SDM (spatial division multiplexing) or FDM (frequency division multiplexing) multiplexing without using the panel channel. Figure 5 As shown, it is a logical diagram of multi-panel transmission implementation based on single DCI (single DCI, S-DCI).

[0124] The multi-panel implementation of terminal equipment generally configures multiple physical panels. The capabilities of different panels may also be different. For example, they may have different numbers of SRS (Sounding Reference Signal) ports, and the maximum number of data transmission layers they support may not be the same. For example, one panel supports a maximum of 2 layers of transmission, and another panel supports a maximum of 4 layers of transmission. The network scheduler will determine whether the terminal device is currently suitable for simultaneous uplink transmission of multiple panels. If the terminal device is currently suitable for simultaneous uplink transmission of multiple panels and is scheduled at the same time, the network will directly or indirectly indicate the relevant transmission parameters, including terminal-specific beam indication information, the number of data layers used for transmission, and the allocation of DMRS ports used, as well as precoding indication information, etc. Here, it is mainly necessary to determine the DMRS port indication problem under S-DCI scheduling, that is, how to determine which DMRS ports are used to send PUSCH on different panels.

[0125] The current protocol supports a maximum of 4 uplink transmission layers, corresponding to the transmission of one codeword. Therefore, another problem in multi-panel enhancement is to support a maximum of 2 codewords in the uplink to achieve flexible mapping. In the existing uplink or downlink layer mapping scheme, the data layer number of 1-4 corresponds to the transmission of 1 codeword (CW). However, this configuration makes it difficult for the same MCS to adapt to the channel conditions of different layers. Therefore, when the channel performance between layers varies greatly, performance loss will occur. Therefore, it is considered to use 2 CWs for scheduling and transmission of 2-4 layer data, such as Figure 6As shown in the figure, the network can be fully scheduled according to the channel conditions between layers. For example, for 3-layer transmission, when the difference between channel layers is large, 2 CWs can be used for scheduling, corresponding to one CW transmitting 1-layer data and the other CW transmitting 2-layer data. This also facilitates data retransmission scheduling and helps improve system throughput. The system mainly transmits below 4 layers, so it is also beneficial for overall performance optimization.

[0126] However, in the uplink enhancement of Rel-18, it is necessary to consider how to support higher throughput and more reliable transmission performance through multi-panel / multi-TRP uplink simultaneous transmission. In addition, in order to support the multi-panel uplink simultaneous transmission scheme based on S-DCI, it is necessary to consider an enhanced scheme that can support the flexible allocation indication of DMRS ports for SU-MIMO and MU-MIMO under the SDM transmission multiplexing scheme.

[0127] To this end, the present disclosure proposes a method and device for determining an uplink demodulation reference signal port. In order to better understand the method for determining an uplink demodulation reference signal port disclosed in an embodiment of the present disclosure, the communication system used in the embodiment of the present disclosure is first described below.

[0128] See also Figure 7 , Figure 7 The following is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include but is not limited to a network side device and a terminal device. Figure 7 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network-side devices and two or more terminal devices may be included. Figure 7 The communication system shown includes a network side device 701 and a terminal device 702 as an example.

[0129] It should be noted that the technical solution of the embodiment of the present disclosure can be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems. It should also be noted that the side link in the embodiment of the present disclosure can also be called a side link or a through link.

[0130] The network side device 701 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network side device 701 may be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network side device. The network side device provided in the embodiment of the present disclosure may be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of the network side device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0131] The terminal device 702 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0132] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. A person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0133] The uplink demodulation reference signal port determination method and device provided by the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0134] See also Figure 8 , Figure 8 1 is a flow chart of a method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure. It should be noted that the method for determining an uplink demodulation reference signal port in an embodiment of the present disclosure can be executed by a terminal device having a multi-antenna panel. Figure 8 As shown, the method may include but is not limited to the following steps:

[0135] In step 801, based on the uplink simultaneous transmission STxMP (Simultaneous transmission via multi-Panel) in the SDM mode scheduled by a single DCI, the DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device by the receiving network side device according to the DMRS port allocation table.

[0136] It should be noted that the "one" or "single" involved in the embodiments of the present disclosure refers to at least one, and is not limited to only one. Similarly, the "two" also refers to at least two, and is not limited to only two.

[0137] Among them, in the embodiment of the present disclosure, the DMRS port allocation information is used to determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams (panel / TRP / TCI (transmission configuration indication state, transmission configuration indication) state) used by different panels for different TRPs. Among them, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels for different transmitting and receiving points TRPs may belong to the same code division multiplexing CDM group or to different CDM groups. That is, different panels perform PUSCH transmissions for different TRPs, and these PUSCH transmissions use different beams. Among them, each PUSCH may include one or more PUSCH transmission opportunities, wherein the network side device may configure DMRS port information for each PUSCH transmission opportunity. That is, the PUSCH transmission opportunities in multiple PUSCHs may be the same or different; the network side device may configure the corresponding DMRS port information for the PUSCH transmission opportunity of each PUSCH. In some embodiments, different PUSCHs correspond to the same PUSCH transmission opportunity. In other embodiments, different PUSCHs correspond to different PUSCH transmission opportunities.

[0138] Optionally, the indication of the beam includes an indication method based on a unified TCI (unified TCI architecture), and also includes an indication using spatial relationship information (Spatial Relation Info) when there is no unified TCI indication.

[0139] In an embodiment of the present disclosure, when a terminal device receives the DMRS port allocation information allocated by a network side device to the terminal device, it can determine, based on the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP.

[0140] By implementing the embodiments of the present disclosure, DMRS port allocation information for indicating multiple DMRS ports is allocated to terminal devices based on multiple panels to indicate the terminal devices to associate the DMRS port information corresponding to different panels and to use PUSCH transmission opportunities on different beams facing different transmitting and receiving points TRP. This can enhance the flexible allocation indication of DMRS ports that can support single-user multiple input and output (SU-MIMO) and multi-user multiple input and output (MU-MIMO) under the SDM transmission multiplexing mode, thereby providing a multi-panel uplink simultaneous transmission solution based on a single DCI, and solving the problem of how to use multiple TRPs or panels for simultaneous uplink transmission in the uplink enhancement of version Rel-18 to support higher throughput and more reliable transmission performance.

[0141] Optionally, in some embodiments of the present disclosure, the antenna port indication field in the DCI signaling can be used to indicate the total number of data layers (i.e., the RANK number). In the embodiments of the present disclosure, the "antenna ports" indication field in the DCI signaling is used to indicate the total number of data layers, i.e., the RANK number. RANK is only for the allocation of RANK>1 in the uplink DMRS port allocation table. The RANK combination on different panels is determined by default or predefined methods, and the DMRS port allocation corresponding to different beam directions can be specifically determined. Please refer to Fig. 9 , Fig. 9 FIG. 1 is a flow chart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure. It should be noted that the method for determining an uplink demodulation reference signal port in an embodiment of the present disclosure can be executed by a terminal device having a multi-antenna panel. Fig. 9 As shown, the method may include but is not limited to the following steps:

[0142] In step 901, STxMP is transmitted simultaneously in the uplink in the SDM mode based on a single DCI scheduling, and DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device by the network side device according to the DMRS port allocation table is received.

[0143] Among them, in the embodiments of the present disclosure, the DMRS port allocation information is used to determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams (panel / TRP / TCI state) used by different panels facing different TRPs; wherein, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRPs belongs to the same code division multiplexing CDM group or to different CDM groups.

[0144] Optionally, the single DCI involved in the embodiment of the present disclosure may further include an antenna port indication field, where the antenna port indication field is used to indicate the total transmission rank RANK number corresponding to the transmission of PUSCH, and the total RANK number is greater than 1.

[0145] In step 902, based on the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined.

[0146] In the disclosed embodiments, different panels perform PUSCH transmissions for different TRPs, and these PUSCH transmissions use different beams. Each PUSCH may include one or more PUSCH transmission opportunities, and the network-side device may configure DMRS port information for each PUSCH transmission opportunity. In other words, the PUSCH transmission opportunities in multiple PUSCHs may be the same or different; the network-side device may configure corresponding DMRS port information for the PUSCH transmission opportunity of each PUSCH. In some embodiments, different PUSCHs correspond to the same PUSCH transmission opportunity. In other embodiments, different PUSCHs correspond to different PUSCH transmission opportunities.

[0147] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information may include at least a set of DMRS ports allocated to the terminal device. Among them, in a possible implementation method, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity can be determined in a default manner according to the DMRS port set; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4. As an example, the first RANK combination involved in the embodiments of the present disclosure is a 1+3 or 3+1 RANK combination.

[0148] For example, for the case where the RANK combination of 1+3 or 3+1 is not supported, the RANK combination actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 2 or 4, the default method can be used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity (such as panel#1) and the second PUSCH transmission opportunity (panel#2) respectively. Optionally, if the RANK combination of 1+3 / 3+1 is not supported, the RANK combination actually supported by the PUSCH transmission corresponding to the two panels / TRP / TCIs ​​is 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4), then when the total RANK number indicated in the antenna port indication field is 2 or 4, the default method determines the number of DMRS ports corresponding to the allocation of panel#1 and panel#2 respectively. For example, the port indicated by the DCI signaling is specifically DMRS ports={2,3}, then the DMRS port allocated to the first PUSCH transmission opportunity (such as panel#1) is determined by default to be {2}, and the DMRS port allocated to the second PUSCH transmission opportunity (panel#2) is {3}.

[0149] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information may include at least a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set is mapped to the RANK combination supported by multiple PUSCH transmission opportunities. In one possible implementation, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity can be determined respectively in a default predefined manner according to the DMRS port set and the mapping relationship; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0150] For example, for the case where the RANK combination of 1+3 or 3+1 is not supported, the RANK combination actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity can be determined by the default predefined method. For example, in the DMRS port allocation table, for DMRS type 2, single symbol, RANK=3, the configured DMRS ports are shown in Table 1 below. The default predefined index0-2 (i.e., the Value value is {0, 1, 2}) can indicate the RANK combination of 1+2, and the index3-5 (i.e., the Value value is {3, 4, 5}) corresponds to the RANK combination of 2+1, and the ports are allocated sequentially. For example, when the Value value is 0, the corresponding DMRS port is {0,1,2}. The Value value {0} is predefined by default to indicate the RANK combination of 1+2, and the ports are allocated in sequence. Therefore, the DMRS port of the first PUSCH transmission opportunity (panel#1) can be determined to be {0}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) can be determined to be {1,2}. For another example, when the Value value is 4, the corresponding DMRS port is {0,1,2}. The Value value {4} is predefined by default to indicate the RANK combination of 2+1, and the ports are allocated in sequence. Therefore, the DMRS port of the first PUSCH transmission opportunity (panel#1) can be determined to be {0,1}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) can be determined to be {2}.

[0151] Table 1 DMRS ports configured for DMRS type 2, single symbol, RANK=3

[0152]

[0153] It is understandable that each element in the above-mentioned Table 1 exists independently, and these elements are exemplarily listed in the same table, but it does not mean that all elements in the table must exist at the same time as shown in the table. The value of each element is independent of the value of any other element in Table 1. Therefore, it can be understood by those skilled in the art that the value of each element in the Table 1 is an independent embodiment. It should be noted that the embodiments of the present disclosure include multiple tables, and each of the tables is similar to Table 1, that is, multiple independent embodiments are merged into the same table, and each element in these tables should also be considered as an independent embodiment.

[0154] In some embodiments of the present disclosure, the DMRS port allocation information includes at least: a DMRS port set allocated to a terminal device and additional indication information. The additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by multiple PUSCH transmission opportunities. There are two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP.

[0155] Among them, in the embodiments of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to the antenna port indication field and the DMRS port allocation information can be as follows: According to the DMRS port set and the mapping relationship, determine the number of DMRS ports to sequentially allocate multiple DMRS ports to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0156] For example, for the case where the RANK combination of 1+3 or 3+1 is not supported, the RANK combination actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3, the same number of rows can be added to the DMRS port allocation table, and a column of information can be added. Optionally, the column of information can be defined to indicate whether the RANK combination is 1+2 or 2+1, and the DMRS ports corresponding to different panels correspond sequentially. For example, as shown in Table 2 below, a column of additional indication information is added to the DMRS port allocation table, and the additional indication information is used to indicate whether the RANK combination is 1+2 or 2+1. In the DMRS port allocation table, the corresponding information can indicate that index0-2 (i.e., the Value value is {0, 1, 2}) indicates a combination of 1+2, and index3-5 (i.e., the Value value is {3, 4, 5}) indicates a combination of 2+1. For example, the Value value is 0, and the corresponding DMRS port is {0, 1, 2}, and the Value value {0} corresponds to the RANK combination of 1+2, and the DMRS ports corresponding to different panels correspond in sequence. Therefore, the DMRS port of the first PUSCH transmission opportunity (such as panel#1) can be determined to be {0}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) can be determined to be {1, 2}. For example, the Value value is 5, and the corresponding DMRS port is {3, 4, 5}. The Value value {5} corresponds to the RANK combination of 2+1, and the DMRS ports corresponding to different panels are sequentially corresponding. Therefore, it can be determined that the DMRS port of the first PUSCH transmission opportunity (panel#1) is {3,4}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) is {5}.

[0157] Table 2 DMRS ports configured for DMRS type 2, single symbol, RANK=3

[0158] Index(Value) Number of DMRS CDM groups that do not contain data DMRS Port Additional Instructions 0 2 0-2 1+2 1 3 0-2 1+2 2 3 3-5 1+2 3 2 0-2 2+1 4 3 0-2 2+1 5 3 3-5 2+1 6-15 Reserved Reserved

[0159] In some embodiments of the present disclosure, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device and additional indication information, wherein the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0160] Among them, in the embodiments of the present disclosure, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to the antenna port indication field and the DMRS port allocation information can be as follows: according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0161] For example, for the case where the RANK combination of 1+3 or 3+1 is not supported, the RANK combination actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3, the same number of rows can be added to the DMRS port allocation table, and a column of information can be added. Optionally, the column of information can be defined to indicate the DMRS port of the first PUSCH transmission opportunity (such as panel#1). It can be understood that this method is more flexible, and the corresponding number of DCI bits in the increased DMRS port allocation table remains unchanged, and the overhead is not increased.

[0162] For example, as shown in Table 3 below, a column of additional indication information is added to the DMRS port allocation table, and the additional indication information is used to indicate the DMRS port of the first PUSCH transmission opportunity (such as panel#1), so that index0-5 (i.e., Value value {0,1,2,3,4,5}) corresponds to the RANK combination indicating 1+2, and index6-11 (i.e., Value value {6,7,8,9,10,11}) corresponds to the RANK combination indicating 2+1. For example, the Value value is 5, and the corresponding DMRS port is {3,4,5}, and the Value value {5} corresponds to the RANK combination indicating 1+2. The additional indication information is used to indicate that the DMRS port of the first PUSCH transmission opportunity (such as panel#1) is {4}, so the DMRS port of the first PUSCH transmission opportunity (such as panel#1) can be determined to be {4}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) can be determined to be {3,5}. For example, the Value value is 6, and the corresponding DMRS port is {0,1,2}. The Value value {6} corresponds to the RANK combination indicating 2+1. The additional indication information is used to indicate that the DMRS port of the first PUSCH transmission opportunity (such as panel#1) is {0,1}. Then, the DMRS port of the first PUSCH transmission opportunity (such as panel#1) can be determined to be {0,1}, and the DMRS port of the second PUSCH transmission opportunity (panel#2) can be determined to be {2}.

[0163] Table 2 DMRS ports configured for DMRS type 2, single symbol, RANK=3

[0164]

[0165] Optionally, if the RANK combination of 1+3 / 3+1 is not supported, the RANK combinations actually supported by the PUSCH transmission corresponding to the two panels / TRP / TCI are 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), and 2+2 (total number of layers is 4). The DMRS port allocation corresponding to RANK3 requires adding the same number of rows to the DMRS port allocation table and adopting the following scheme: the default method and adding the indicated information definition (such as adding a column). As an example, the added column information can be used to indicate whether the RANK combination is 1+2 or 2+1, and the DMRS ports corresponding to different panels are in sequence; as another example, the added column information can be used to directly indicate the DMRS port of panel#1 (more flexible); the number of DCI bits corresponding to the added DMRS table remains unchanged, and the overhead is not increased.

[0166] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a set of DMRS ports allocated to the terminal device. Among them, in the embodiments of the present disclosure, the possible implementation method of determining the configuration of PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to the antenna port indication field and the DMRS port allocation information may be as follows: According to the DMRS port set, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are determined in a default manner; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2.

[0167] For example, for the case of supporting 1+3 or 3+1 RANK combinations (such as flexible allocation mapping for 1 codeword and 2 codewords), the RANK combinations actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4), 1+3 (total number of layers is 4), 3+1 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 2, the default method can be used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity (such as panel#1) and the second PUSCH transmission opportunity (panel#2) respectively. For example, if the port indicated by the DCI signaling is DMRS={2,3}, then the DMRS port allocated to the first PUSCH transmission opportunity (such as panel#1) is determined to be {2}, and the DMRS port allocated to the second PUSCH transmission opportunity (panel#2) is determined to be {3}.

[0168] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set has a mapping relationship with the RANK combination supported by multiple PUSCH transmission opportunities. Among them, in the embodiments of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to the antenna port indication field and the DMRS port allocation information can be as follows: According to the DMRS port set and the mapping relationship, the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are determined respectively by the default predefined method; wherein, the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0169] For example, for the case of supporting 1+3 or 3+1 RANK combinations (such as flexible allocation mapping for 1 codeword and 2 codewords), the RANK combinations actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4), 1+3 (total number of layers is 4), 3+1 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3 or 4, the default predefined method can be used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity. For example, taking the DMRS port allocation table of DMRS type 2, single symbol, RANK=3 as an example, index0-2 (i.e., Value values ​​are {0, 1, 2}) can be predefined by default to indicate a RANK combination of 1+2, index3-5 (i.e., Value values ​​are {3, 4, 5}) correspond to a RANK combination of 2+1, and the ports are allocated sequentially. For another example, taking the DMRS port allocation table of DMRS type 2, single symbol, RANK=4 as an example, index0-1 (i.e., Value values ​​are {0, 1}) can be predefined by default to indicate a RANK combination of 2+2, index2 (i.e., Value values ​​are {2}) indicate a RANK combination of 1+3, index3-5 (i.e., Value values ​​are {3, 4, 5}) correspond to indicate a RANK combination of 2+1, and the ports are allocated sequentially.

[0170] In some embodiments of the present disclosure, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device and additional indication information. The additional indication information is used to indicate the mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities. As an example, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP. In an embodiment of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to the antenna port indication field and the DMRS port allocation information may be as follows: According to the DMRS port set and the mapping relationship, determine the number of DMRS ports to sequentially allocate multiple DMRS ports to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0171] For example, for the case of supporting 1+3 or 3+1 RANK combinations (such as flexible allocation mapping for 1 codeword and 2 codewords), the RANK combinations actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4), 1+3 (total number of layers is 4), 3+1 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3 or 4, the same number of rows can be added to the DMRS port allocation table, and a column of information can be added. Optionally, the column of information can be defined to indicate that the RANK3 combination is 1+2 or 2+1, and the RANK4 combination is 2+2, 1+3 or 3+1, and the DMRS ports corresponding to different panels correspond sequentially.

[0172] In some embodiments of the present disclosure, the DMRS port allocation information may include at least: a DMRS port set and additional indication information allocated to the terminal device. The additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set. As an example, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP. In an embodiment of the present disclosure, according to the antenna port indication field and the DMRS port allocation information, a possible implementation method for determining the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP may be as follows: According to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0173] For example, for the case of supporting 1+3 or 3+1 RANK combinations (such as flexible allocation mapping for 1 codeword and 2 codewords), the RANK combinations actually supported by the PUSCH transmission corresponding to the two panel / TRP / TCI states can be 1+1 (total number of layers is 2), 1+2 (total number of layers is 3), 2+1 (total number of layers is 3), 2+2 (total number of layers is 4), 1+3 (total number of layers is 4), 3+1 (total number of layers is 4). When the total RANK number indicated by the antenna port indication field is 3 or 4, the same number of rows can be added to the DMRS port allocation table, and a column of information can be added. Optionally, the column of information can be defined to indicate the DMRS port of the first PUSCH transmission opportunity (such as panel#1). It can be understood that this method is more flexible, and the corresponding number of DCI bits in the increased DMRS port allocation table remains unchanged, and the overhead is not increased.

[0174] Optionally, in an embodiment of the present disclosure, if a RANK combination of 1+3 or 3+1 is supported (such as flexible allocation mapping for 1 codeword and 2 codewords), the actually supported RANK combinations are 1+1, 1+2, 2+1, 2+2, 1+3, 3+1, then the corresponding numbers of DMRS ports of panel#1 and panel#2 indicated can be allocated to RANK2 in sequence, that is, if DMRS={2,3}, then the default DMRS port of panel#1 is {2}, and the default DMRS port of panel#2 is {3}. Optionally, if RANK combinations of 1+3 or 3+1 are supported (such as flexible allocation mapping for 1 codeword and 2 codewords), the actually supported RANK combinations are 1+1, 1+2, 2+1, 2+2, 1+3, and 3+1. Then, corresponding to the DMRS port allocations of RANK3 and 4, it is necessary to add different numbers of rows in the table, and default or add definitions (add one column), wherein the added column information can be used to indicate whether the RANK3 combination is 1+2 or 2+1, and whether the RANK4 combination is 2+2, 1+3 or 3+1, or, the added column information can be used to directly indicate the DMRS port of panel#1 (more flexible); the number of DCI bits corresponding to the added DMRS table remains unchanged, and no overhead is increased.

[0175] Optionally, for uplink PUSCH transmission, the present disclosure can also obtain the specific allocation of RANK combinations through the SRI / TPMI field and the antenna port indication field. For the precoding indication methods of different panels, considering that for codebook-based PUSCH transmission, the RANK combination can be obtained through 1 or 2 TPMI indication fields in the DCI, and for non-codebook-based PUSCH transmission, the RANK combination can be obtained through 1 or 2 SRI fields in the DCI. At the same time, combined with the port information indicated by the DMRS indication field of the antenna port, the DMRS port information on different panels can be obtained. Please refer to Fig.10 , Fig.10 FIG. 1 is a flow chart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure. It should be noted that the method for determining an uplink demodulation reference signal port in an embodiment of the present disclosure can be executed by a terminal device having a multi-antenna panel. Fig.10 As shown, the method may include but is not limited to the following steps:

[0176] In step 1001, STxMP is transmitted simultaneously in the uplink in the SDM mode based on a single DCI scheduling, and DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device by the network side device according to the DMRS port allocation table is received.

[0177] Among them, in the embodiments of the present disclosure, the DMRS port allocation information is used to determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams (panel / TRP / TCI state) used by different panels facing different TRPs; wherein, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRPs belongs to the same code division multiplexing CDM group or to different CDM groups.

[0178] In the disclosed embodiments, different panels perform PUSCH transmissions for different TRPs, and these PUSCH transmissions use different beams. Each PUSCH may include one or more PUSCH transmission opportunities, and the network-side device may configure DMRS port information for each PUSCH transmission opportunity. In other words, the PUSCH transmission opportunities in multiple PUSCHs may be the same or different; the network-side device may configure corresponding DMRS port information for the PUSCH transmission opportunity of each PUSCH. In some embodiments, different PUSCHs correspond to the same PUSCH transmission opportunity. In other embodiments, different PUSCHs correspond to different PUSCH transmission opportunities.

[0179] Optionally, the single DCI involved in the embodiment of the present disclosure further includes at least one SRI and / or TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to multiple PUSCH transmission opportunities; the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device. It can be understood that in codebook-based transmission, the SRI and TPMI fields need to be used to jointly indicate the RANK combination, and for non-codebook transmission, the SRI field is used to indicate the RANK combination.

[0180] In step 1002, based on at least one SRI and / or TPMI indication field and an antenna port indication field, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined.

[0181] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP. The at least one SRI and / or TPMI indication field may include two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; and the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0182] Among them, in an embodiment of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to at least one SRI and / or TPMI indication field and an antenna port indication field may be as follows: determining the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field; determining the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively according to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0183] For example, if there are two SRIs and / or TPMIs, the first SRI and / or TPMI can indicate the RANK number corresponding to the first PUSCH transmission opportunity (such as Panel#1 / TCI1 / TRP1), and the second SRI and / or TPMI can indicate the RANK number corresponding to the second PUSCH transmission opportunity (such as Panel#2 / TCI2 / TRP2). In this way, the RANK numbers indicated by the two SRI and / or TPMI indication fields can be combined with the DMRS port set assigned to the terminal device indicated by the antenna port indication field to determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity.

[0184] In some embodiments of the present disclosure, there may be two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of the one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0185] Among them, in an embodiment of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to at least one SRI and / or TPMI indication field and an antenna port indication field may be as follows: according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are respectively determined in a predefined manner.

[0186] For example, if there is only one SRI and / or TPMI indication domain, one SRI codepoint and / or TPMI codepoint indicates two valid SRIs and / or TPMIs. For example, taking non-codebook transmission as an example, one SRI codepoint can be used to indicate two valid SRIs, wherein the first valid SRI can be used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity. For another example, taking codebook transmission as an example, one SRI codepoint and TPMI codepoint can be used to jointly indicate the RANK combination, and one SRI codepoint and TPMI codepoint indicate two valid SRIs and TPMIs, wherein the first valid SRI and TPMI jointly indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and TPMI jointly indicate the RANK number corresponding to the second PUSCH transmission opportunity. After determining the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, DMRS ports can be allocated by default starting from a smaller PUSCH transmission opportunity number (such as panel#1) in a predefined manner, so that the DMRS allocation situation on different panels can be obtained accordingly.

[0187] In a possible implementation, the DMRS port allocation information includes at least additional indication information, and the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set. Among them, in the embodiment of the present disclosure, the possible implementation method of determining the DMRS port information configured for the PUSCH transmission opportunity associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP according to at least one SRI and / or TPMI indication field and an antenna port indication field can be as follows: according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information, respectively determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity.

[0188] For example, the same number of rows can be added to the DMRS port allocation table, and a column of information can be added. Optionally, the column of information can be defined to indicate the DMRS port of the first PUSCH transmission opportunity (such as panel#1 / TCI1 / TRP1). It can be understood that this method is more flexible, and the corresponding number of DCI bits in the increased DMRS port allocation table remains unchanged, and the overhead is not increased.

[0189] In the embodiment of the present disclosure, for the PUSCH transmission of uplink simultaneous transmission, the specific allocation of the RANK combination is obtained by jointly parsing the SRI / TPMI field and the antenna port field. For the precoding indication method of different panels, considering that for the PUSCH transmission based on the codebook, the RANK combination can be obtained through 1 or 2 TPMI indication fields in the DCI, respectively, for the PUSCH transmission based on the non-codebook, the RANK combination can be obtained through 1 or 2 SRI fields in the DCI, and at the same time, combined with the port information indicated by the DMRS indication field of the antenna port, the DMRS port information on different panels can be obtained according to the following implementation method.

[0190] Implementation method 1: If there are two TPMI / SRI indication domains, the first SRI / TPMI domain indicates the RANK number corresponding to Panel#1 / TCI1 / TRP1, and the second SRI / TPMI domain indicates the RANK number corresponding to Panel#2 / TCI2 / TRP2.

[0191] Implementation method 2: If there is only one TPMI / SRI indication domain, one SRIcodepoint / TPMIcodepoint corresponds to indicating two valid TPMI / SRI. Optionally, predefined rules are added. For example, DMRS ports can be allocated starting from a smaller one such as panel#1 by default in a predefined manner, and the DMRS allocation on different panels can be obtained accordingly. Predefined rules can also be added, such as: the default method and adding the indicated information definition (such as adding a column to the DMRS port allocation table). The added column information can be a) used to directly indicate the DMRS port of panel#1 / TCI1 / TRP1 (more flexible); the number of DCI bits corresponding to the added DMRS table remains unchanged, and the overhead is not increased.

[0192] Optionally, for the allocation of uplink DMRS ports, the DMRS port allocations for different TRPs can be in the same CDM group or from different CDM groups. At the same time, the RANK combinations supported by different codewords are also different. The present disclosure can implement different DMRS port indications corresponding to multi-panel transmissions based on S-DCI without increasing the existing protocol overhead.

[0193] By implementing the embodiments of the present disclosure, DMRS port allocation information for indicating multiple DMRS ports can be allocated to terminal devices based on multiple panels, so that the terminal devices can determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRPs. This can achieve enhancement of the flexible allocation indication of DMRS ports that can support single-user multiple input and output (SU-MIMO) and multi-user multiple input and output (MU-MIMO) under the SDM transmission multiplexing mode, thereby providing a solution for supporting simultaneous uplink transmission of multiple panels based on a single DCI, and solving the problem of how to use simultaneous uplink transmission of multiple TRPs or panels to support higher throughput and more reliable transmission performance in the uplink enhancement of version Rel-18.

[0194] It can be understood that the above embodiment describes the implementation of the uplink demodulation reference signal port determination method of the embodiment of the present disclosure from the terminal device side. The embodiment of the present disclosure also proposes an uplink demodulation reference signal port determination method, and the implementation of the uplink demodulation reference signal port determination method will be described from the network side device side. It should be noted that for the same parameters, their explanations in the implementation methods of the terminal device and the network side device side are corresponding, so the same parameters will not be repeated. Please refer to Fig.11 , Fig.11FIG. 1 is a flow chart of another method for determining an uplink demodulation reference signal port provided by an embodiment of the present disclosure. It should be noted that the method for determining an uplink demodulation reference signal port in an embodiment of the present disclosure may be executed by a network side device. Fig.11 As shown, the method may include but is not limited to the following steps:

[0195] In step 1101, DMRS port allocation information for indicating a plurality of DMRS ports is allocated to a terminal device having a multi-antenna panel according to a demodulation reference signal DMRS port allocation table.

[0196] In step 1102, a single downlink control information DCI is sent to the terminal device; the single DCI includes DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

[0197] In the disclosed embodiments, different panels perform PUSCH transmissions for different TRPs, and these PUSCH transmissions use different beams. Each PUSCH may include one or more PUSCH transmission opportunities, and the network-side device may configure DMRS port information for each PUSCH transmission opportunity. In other words, the PUSCH transmission opportunities in multiple PUSCHs may be the same or different; the network-side device may configure corresponding DMRS port information for the PUSCH transmission opportunity of each PUSCH. In some embodiments, different PUSCHs correspond to the same PUSCH transmission opportunity. In other embodiments, different PUSCHs correspond to different PUSCH transmission opportunities.

[0198] In some embodiments of the present disclosure, a single DCI also includes an antenna port indication field, and the antenna port indication field is used to indicate the total transmission rank RANK number corresponding to the transmission of PUSCH, and the total RANK number is greater than 1. In some embodiments of the present disclosure, the terminal device can determine the DMRS port information configured for the PUSCH transmission timing associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP based on the antenna port indication field and the DMRS port allocation information. This step can be implemented in any of the implementation methods in the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this and will not be repeated.

[0199] In some embodiments of the present disclosure, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a set of DMRS ports allocated to the terminal device. In the embodiments of the present disclosure, the terminal device can determine the number of DMRS ports allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity in sequence in a default manner according to the DMRS port set; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4.

[0200] In the embodiment of the present disclosure, the "antenna ports" indication field in the DCI signaling is used to indicate the total number of data layers, that is, the RANK number.

[0201] In some embodiments of the present disclosure, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set is mapped to the RANK combination supported by multiple PUSCH transmission opportunities. In one possible implementation, the terminal device can determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a default predefined manner according to the DMRS port set and the mapping relationship; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0202] In some embodiments of the present disclosure, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device and additional indication information. The additional indication information is used to indicate the mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities. In an embodiment of the present disclosure, the terminal device can determine the number of DMRS ports to sequentially allocate multiple DMRS ports to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity based on the DMRS port set and the mapping relationship; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0203] In some embodiments of the present disclosure, the DMRS port allocation information includes at least: a DMRS port set and additional indication information allocated to the terminal device. The additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set. In an embodiment of the present disclosure, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the terminal device can determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information; the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0204] In some embodiments of the present disclosure, a single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate a RANK combination corresponding to actual PUSCH transmissions corresponding to multiple PUSCH transmission opportunities; and the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0205] In one implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity. Among them, in the embodiment of the present disclosure, the terminal device can determine the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field, and determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively according to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0206] In another implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity. In the embodiment of the present disclosure, the terminal device can determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a predefined manner according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0207] In a possible implementation, the DMRS port allocation information includes at least additional indication information, and the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set. Among them, in an embodiment of the present disclosure, the terminal device can determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information.

[0208] By implementing the embodiments of the present disclosure, DMRS port allocation information for indicating multiple DMRS ports can be allocated to terminal devices based on multiple panels through network-side devices, so that the terminal devices can determine the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different sending and receiving points TRPs, and can achieve enhancement of DMRS port flexible allocation indication that can support single-user multiple input and output (SU-MIMO) and multi-user multiple input and output (MU-MIMO) under the SDM transmission multiplexing mode, thereby providing a multi-panel uplink simultaneous transmission solution based on a single DCI, and solving the problem of how to use multiple TRPs or panels for uplink simultaneous transmission in the uplink enhancement of version Rel-18 to support higher throughput and more reliable transmission performance.

[0209] In the above embodiments provided by the present disclosure, the methods provided by the embodiments of the present disclosure are introduced from the perspectives of the terminal device and the network side device. In order to implement the functions in the methods provided by the above embodiments of the present disclosure, the terminal device and the network side device may include a hardware structure and 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. One of the above functions may be executed in the form of a hardware structure, a software module, or a hardware structure plus a software module.

[0210] See also Fig.12 , which is a structural diagram of a communication device 120 provided in an embodiment of the present disclosure. Fig.12 The communication device 120 shown may include a transceiver module 1201 and a processing module 1202. The transceiver module 1201 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, the receiving module is used to implement a receiving function, and the transceiver module 1201 may implement a sending function and / or a receiving function.

[0211] The communication device 120 may be a terminal device, a device in a terminal device, or a device that can be used in conjunction with the terminal device. Alternatively, the communication device 120 may be a network side device, a device in a network side device, or a device that can be used in conjunction with the network side device.

[0212] The communication device 120 is a terminal device: the transceiver module 1201 is used for simultaneous uplink transmission STxMP in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and receives DMRS port allocation information indicating multiple DMRS ports allocated by a network side device for a terminal device with a multi-antenna panel panel according to a demodulation reference signal DMRS port allocation table; wherein the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

[0213] In one implementation, a single DCI also includes an antenna port indication field, which is used to indicate the total transmission rank RANK number corresponding to the transmission of PUSCH, and the total RANK number is greater than 1; the processing module 1202 determines the DMRS port information configured for the PUSCH transmission timing associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP based on the antenna port indication field and the DMRS port allocation information.

[0214] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein, the processing module 1202 is specifically used to: according to the DMRS port set, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a default manner; wherein, the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4.

[0215] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities; wherein, the processing module 1202 is specifically used to: according to the DMRS port set and the mapping relationship, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively using a default predefined method; wherein, the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0216] In a possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; and additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by multiple PUSCH transmission opportunities.

[0217] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processing module 1202 is specifically used to: determine the number of DMRS ports to be sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port set and mapping relationship; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0218] In one possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; additional indication information, the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0219] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processing module 1202 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0220] In one implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein, the processing module 1202 is specifically used to: according to the DMRS port set, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a default manner; wherein, the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2.

[0221] In one implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities; wherein, the processing module 1202 is specifically used to: according to the DMRS port set and the mapping relationship, use a default predefined method to respectively determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein, the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0222] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processing module 1202 is specifically used to: determine the number of DMRS ports to be sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port set and mapping relationship; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0223] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processing module 1202 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0224] In a possible implementation, the first RANK combination is a 1+3 or 3+1 RANK combination.

[0225] In one implementation, a single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to multiple PUSCH transmission opportunities; the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0226] In one possible implementation, the processing module 1202 is also used to determine, based on at least one SRI and / or TPMI indication field and an antenna port indication field, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP.

[0227] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0228] Among them, the processing module 1202 is specifically used to: determine the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field; determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively according to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0229] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0230] Among them, the processing module 1202 is specifically used to: according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, use a predefined method to determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively.

[0231] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to a DMRS port set.

[0232] Among them, the processing module 1202 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information.

[0233] The communication device 120 is a network side device: the processing module 1202 is used to allocate DMRS port allocation information for indicating multiple DMRS ports to a terminal device with a multi-antenna panel panel according to a demodulation reference signal DMRS port allocation table; the transceiver module 1201 is used to send a single downlink control information DCI to the terminal device; the single DCI includes DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

[0234] In one implementation, a single DCI further includes an antenna port indication field, where the antenna port indication field is used to indicate the total number of transmission ranks RANK corresponding to the transmission of the PUSCH, and the total number of RANKs is greater than 1.

[0235] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by different panels for different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a set of DMRS ports allocated to the terminal device.

[0236] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities.

[0237] In a possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; and additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by multiple PUSCH transmission opportunities.

[0238] In one possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; additional indication information, the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0239] In one possible implementation, a single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to multiple PUSCH transmission opportunities; the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0240] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0241] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0242] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to a DMRS port set.

[0243] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0244] See also Fig.13 , Fig.131 is a schematic diagram of the structure of another communication device 130 provided in an embodiment of the present disclosure. The communication device 130 may be a network side device, or a terminal device, or a chip, a chip system, or a processor that supports the network side device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0245] The communication device 130 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0246] Optionally, the communication device 130 may further include one or more memories 1302, on which a computer program 1304 may be stored, and the processor 1301 executes the computer program 1304 so that the communication device 130 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 1302. The communication device 130 and the memory 1302 may be provided separately or integrated together.

[0247] Optionally, the communication device 130 may further include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1305 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

[0248] Optionally, the communication device 130 may further include one or more interface circuits 1307. The interface circuit 1307 is used to receive code instructions and transmit them to the processor 1301. The processor 1301 runs the code instructions to enable the communication device 130 to execute the method described in the above method embodiment.

[0249] The communication device 130 is a terminal device: the processor 1301 is used to execute Fig. 9 Step 902 in; Execute Fig.10 The transceiver 1305 is used to perform Figure 8 Step 801 in; Execute Fig. 9 Step 901 in; Execute Fig.10 Step 1001 in .

[0250] The communication device 130 is a network side device: the transceiver 1305 is used to perform Fig.11 The processor 1301 is used to execute step 1102. Fig.11 Step 1101 in .

[0251] In one implementation, the processor 1301 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0252] In one implementation, the processor 1301 may store a computer program, which runs on the processor 1301 and enables the communication device 130 to perform the method described in the above method embodiment. The computer program may be fixed in the processor 1301, in which case the processor 1301 may be implemented by hardware.

[0253] In one implementation, the communication device 130 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0254] The communication device described in the above embodiments may be a network side device or a terminal device, but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Fig.13 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0255] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0256] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

[0257] (3) ASIC, such as modem;

[0258] (4) Modules that can be embedded in other devices;

[0259] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network-side devices, cloud devices, artificial intelligence devices, etc.;

[0260] (6)Others

[0261] For the case where the communication device may be a chip or a chip system, see Fig.14 Schematic diagram of the chip structure shown. Fig.14 The chip shown includes a processor 1401 and an interface 1402. The number of the processor 1401 can be one or more, and the number of the interface 1402 can be multiple.

[0262] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0263] Interface 1402 is used for simultaneous uplink transmission STxMP in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and receives DMRS port allocation information indicating multiple DMRS ports allocated by a network side device for a terminal device with a multi-antenna panel according to a demodulation reference signal DMRS port allocation table; wherein the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

[0264] In one implementation, a single DCI also includes an antenna port indication field, which is used to indicate the total transmission rank RANK number corresponding to the transmission of PUSCH, and the total RANK number is greater than 1; the processor 1401 determines the DMRS port information configured for the PUSCH transmission timing associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP based on the antenna port indication field and the DMRS port allocation information.

[0265] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein the processor 1401 is specifically used to: according to the DMRS port set, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a default manner; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4.

[0266] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities; wherein, the processor 1401 is specifically used to: according to the DMRS port set and the mapping relationship, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively using a default predefined method; wherein, the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0267] In a possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; and additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by multiple PUSCH transmission opportunities.

[0268] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processor 1401 is specifically used to: determine the number of DMRS ports to be sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port set and mapping relationship; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0269] In one possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; additional indication information, the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0270] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processor 1401 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

[0271] In one implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device; wherein the processor 1401 is specifically used to: according to the DMRS port set, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively in a default manner; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2.

[0272] In one implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and the index of the DMRS port in the DMRS port set is mapped to the RANK combination supported by multiple PUSCH transmission opportunities; wherein, the processor 1401 is specifically used to: according to the DMRS port set and the mapping relationship, determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively using a default predefined method; wherein, the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0273] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processor 1401 is specifically used to: determine the number of DMRS ports to be sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port set and mapping relationship; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0274] Among them, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP; the processor 1401 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

[0275] In a possible implementation, the first RANK combination is a 1+3 or 3+1 RANK combination.

[0276] In one implementation, a single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to multiple PUSCH transmission opportunities; the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0277] In one possible implementation, the processor 1401 is also used to: determine, based on at least one SRI and / or TPMI indication field and an antenna port indication field, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP.

[0278] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0279] Among them, processor 1401 is specifically used to: determine the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field; determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0280] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0281] Among them, processor 1401 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission timing and the second PUSCH transmission timing respectively in a predefined manner according to the RANK number corresponding to the first PUSCH transmission timing indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission timing indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field.

[0282] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to a DMRS port set.

[0283] Among them, processor 1401 is specifically used to: determine the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information.

[0284] For the case where the chip is used to implement the functions of the network side device in the embodiment of the present disclosure:

[0285] Processor 1401 is used to allocate DMRS port allocation information for indicating multiple DMRS ports to a terminal device with a multi-antenna panel panel according to a demodulation reference signal DMRS port allocation table; interface 1402 is used to send a single downlink control information DCI to the terminal device; the single DCI includes DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein, the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

[0286] In one implementation, a single DCI further includes an antenna port indication field, where the antenna port indication field is used to indicate the total number of transmission ranks RANK corresponding to the transmission of the PUSCH, and the total number of RANKs is greater than 1.

[0287] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by different panels for different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a set of DMRS ports allocated to the terminal device.

[0288] In one possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by multiple PUSCH transmission opportunities.

[0289] In a possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; and additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by multiple PUSCH transmission opportunities.

[0290] In one possible implementation, the DMRS port allocation information includes at least: a DMRS port set allocated to the terminal device; additional indication information, the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

[0291] In one possible implementation, a single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to multiple PUSCH transmission opportunities; the antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

[0292] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein the first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; the second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0293] In a possible implementation, there are two PUSCH transmission opportunities associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP, and at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field, wherein the code point of one SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

[0294] In a possible implementation, the DMRS port allocation information includes at least additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to a DMRS port set.

[0295] Optionally, the chip further includes a memory 1403, and the memory 1403 is used to store necessary computer programs and data.

[0296] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0297] The embodiment of the present disclosure also provides a system for determining the duration of a side link, the system comprising the aforementioned Fig.12 In the embodiment, the communication device as the terminal device and the communication device as the network side device, or the system includes the aforementioned Fig.13 The communication device in the embodiment serves as a terminal device and the communication device serves as a network side device.

[0298] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0299] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0300] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0301] Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for distinction for convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0302] At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0303] The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0304] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0305] 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 disclosure.

[0306] 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.

[0307] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A method for determining an uplink demodulation reference signal port, characterized in that: The method is performed by a terminal device having a multi-antenna panel, and the method includes: Simultaneous uplink transmission of STxMP in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and receiving DMRS port allocation information indicating multiple DMRS ports allocated to the terminal device by a network side device according to a demodulation reference signal DMRS port allocation table; Among them, the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

2. The method according to claim 1, characterized in that The single DCI further includes an antenna port indication field, where the antenna port indication field is used to indicate a total number of transmission ranks RANK corresponding to the transmission of the PUSCH, where the total number of RANK is greater than 1; and the method further includes: According to the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by PUSCH in different panels facing different transmitting and receiving points TRP is determined.

3. The method according to claim 2, characterized in that There are two PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information at least includes a DMRS port set allocated to the terminal device; wherein, according to the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined, including: According to the DMRS port set, a default method is used to determine the number of DMRS ports allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity respectively; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 2 or 4.

4. The method according to claim 2, characterized in that There are two PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information at least includes a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by the two PUSCH transmission opportunities; wherein, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: According to the DMRS port set and the mapping relationship, a default predefined method is used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein, the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

5. The method according to claim 2, characterized in that The DMRS port allocation information at least includes: A DMRS port set allocated to the terminal device; Additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by the PUSCH transmission opportunity.

6. The method according to claim 5, characterized in that The PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: According to the DMRS port set and the mapping relationship, determine the number of DMRS ports that are sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

7. The method according to claim 2, characterized in that The DMRS port allocation information at least includes: A DMRS port set allocated to the terminal device; Additional indication information, where the additional indication information is used to indicate a DMRS port occupied by a first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

8. The method according to claim 7, characterized in that The PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: According to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively; wherein the two PUSCH transmission opportunities do not support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3.

9. The method according to claim 2, characterized in that The PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information at least includes a DMRS port set allocated to the terminal device; wherein, according to the antenna port indication field and the DMRS port allocation information, the configuration of the PUSCH transmission opportunity associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP includes: According to the DMRS port set, the number of DMRS ports allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity are determined in a default manner respectively; wherein the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 2.

10. The method according to claim 2, characterized in that There are two PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information at least includes a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by the two PUSCH transmission opportunities; wherein, according to the antenna port indication field and the DMRS port allocation information, the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined, including: According to the DMRS port set and the mapping relationship, a default predefined method is used to determine the number of DMRS ports corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein, the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

11. The method according to claim 5, characterized in that The PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: According to the DMRS port set and the mapping relationship, determine the number of DMRS ports that are sequentially allocated to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity; wherein the two PUSCH transmission opportunities support a first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

12. The method according to claim 7, characterized in that The PUSCH uses two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP; the DMRS port information configured for the PUSCH transmission opportunities associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined according to the antenna port indication field and the DMRS port allocation information, including: According to the DMRS port occupied by the first PUSCH transmission opportunity indicated by the DMRS port set and the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively; wherein the two PUSCH transmission opportunities support the first RANK combination, and the total RANK number indicated by the antenna port indication field is 3 or 4.

13. The method according to any one of claims 3-4, 6, 8-12, characterized in that: The first RANK combination is a 1+3 or 3+1 RANK combination.

14. The method according to claim 1, wherein: The single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein: The at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to the PUSCH transmission opportunity; The antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

15. The method according to claim 14, characterized in that The method further comprises: According to the at least one SRI and / or TPMI indication field and the antenna port indication field, the DMRS port information configured for the PUSCH transmission timing associated with different beams used by the PUSCH in different panels facing different transmitting and receiving points TRP is determined.

16. The method according to claim 15, characterized in that The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein: The first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; The second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

17. The method according to claim 16, characterized in that The determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, DMRS port information configured for PUSCH transmission opportunities associated with different beams used by PUSCH in different panels for different transmitting and receiving points TRP includes: Determine the RANK combination supported by the two PUSCH transmission opportunities according to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first SRI and / or TPMI indication field and the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second SRI and / or TPMI indication field; According to the RANK combination supported by the two PUSCH transmission opportunities and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively.

18. The method according to claim 15, characterized in that The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field. Among them, the code point of the SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission timing, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission timing.

19. The method according to claim 18, characterized in that The determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, DMRS port information configured for PUSCH transmission opportunities associated with different beams used by PUSCH in different panels for different transmitting and receiving points TRP includes: According to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, and the DMRS port set allocated to the terminal device indicated by the antenna port indication field, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively in a predefined manner.

20. The method of claim 18, wherein: The DMRS port allocation information at least includes additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

21. The method of claim 20, wherein: The determining, according to the at least one SRI and / or TPMI indication field and the antenna port indication field, DMRS port information configured for PUSCH transmission opportunities associated with different beams used by PUSCH in different panels for different transmitting and receiving points TRP includes: According to the RANK number corresponding to the first PUSCH transmission opportunity indicated by the first valid SRI and / or TPMI, the RANK number corresponding to the second PUSCH transmission opportunity indicated by the second valid SRI and / or TPMI, the DMRS port set allocated to the terminal device indicated by the antenna port indication field, and the DMRS port occupied by the first PUSCH transmission opportunity indicated by the additional indication information, the DMRS port information corresponding to the first PUSCH transmission opportunity and the second PUSCH transmission opportunity is determined respectively.

22. A method for determining an uplink demodulation reference signal port, characterized in that: The method is performed by a network side device, and the method includes: Allocating DMRS port allocation information for indicating multiple DMRS ports to a terminal device having a multi-antenna panel according to a demodulation reference signal DMRS port allocation table; A single downlink control information DCI is sent to the terminal device; the single DCI includes the DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

23. The method of claim 22, wherein: The single DCI also includes an antenna port indication field, where the antenna port indication field is used to indicate a total transmission rank RANK number corresponding to the transmission of the PUSCH, and the total RANK number is greater than 1.

24. The method of claim 23, wherein: The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device.

25. The method of claim 23, wherein: The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmitting and receiving points TRP, and the DMRS port allocation information includes at least a DMRS port set allocated to the terminal device, and there is a mapping relationship between the index of the DMRS port in the DMRS port set and the RANK combination supported by the two PUSCH transmission opportunities.

26. The method of claim 23, wherein: The DMRS port allocation information at least includes: A DMRS port set allocated to the terminal device; Additional indication information, where the additional indication information is used to indicate a mapping relationship between an index of a DMRS port in the DMRS port set and a RANK combination supported by the PUSCH transmission opportunity.

27. The method of claim 23, wherein: The DMRS port allocation information at least includes: A DMRS port set allocated to the terminal device; Additional indication information, where the additional indication information is used to indicate a DMRS port occupied by a first PUSCH transmission opportunity, and the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

28. The method of claim 22, wherein: The single DCI also includes at least one sounding reference signal resource indication SRI and / or precoding matrix indication TPMI indication field, and an antenna port indication field, wherein: The at least one SRI and / or TPMI indication field is used to indicate the RANK combination corresponding to the actual PUSCH transmission corresponding to the PUSCH transmission opportunity; The antenna port indication field is used to indicate the total DMRS port set allocated to the terminal device.

29. The method of claim 28, wherein: The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes two SRI and / or TPMI indication fields, wherein: The first SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the first PUSCH transmission opportunity; The second SRI and / or TPMI indication field is used to indicate the RANK number corresponding to the second PUSCH transmission opportunity.

30. The method of claim 28, wherein: The PUSCH has two PUSCH transmission opportunities associated with different beams in different panels facing different transmission and reception points TRP, and the at least one SRI and / or TPMI indication field includes one SRI and / or TPMI indication field. Among them, the code point of the SRI and / or TPMI indication field corresponds to indicating two valid SRIs and / or TPMIs, wherein the first valid SRI and / or TPMI is used to indicate the RANK number corresponding to the first PUSCH transmission timing, and the second valid SRI and / or TPMI is used to indicate the RANK number corresponding to the second PUSCH transmission timing.

31. The method of claim 30, wherein: The DMRS port allocation information at least includes additional indication information, where the additional indication information is used to indicate the DMRS port occupied by the first PUSCH transmission opportunity, wherein the DMRS port occupied by the first PUSCH transmission opportunity belongs to the DMRS port set.

32. A communication device, characterized in that: include: A transceiver module is used for uplink simultaneous transmission of STxMP in a space division multiplexing SDM mode based on a single downlink control information DCI scheduling, and receiving DMRS port allocation information indicating multiple DMRS ports allocated by a network side device to a terminal device with a multi-antenna panel panel according to a demodulation reference signal DMRS port allocation table; Among them, the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or to different CDM groups.

33. A communication device, characterized in that: include: A processing module, configured to allocate DMRS port allocation information indicating multiple DMRS ports to a terminal device having a multi-antenna panel according to a demodulation reference signal DMRS port allocation table; A transceiver module is used to send a single downlink control information DCI to the terminal device; the single DCI includes the DMRS port allocation information, and the DMRS port allocation information is used to determine the DMRS port information corresponding to the physical uplink shared channel PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP; wherein the DMRS port information corresponding to the PUSCH transmission opportunities on different beams used by different panels facing different transmitting and receiving points TRP belongs to the same code division multiplexing CDM group or belongs to different CDM groups.

34. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 1 to 21.

35. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 22 to 31.

36. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 1 to 21 to be implemented.

37. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 22 to 31 to be implemented.

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