Uplink communication method and apparatus based on multi-panel simultaneous transmission

Abstract

The embodiment of the application discloses an uplink communication method and device based on multi-panel simultaneous transmission, receiving first indication information sent by a network device, the first indication information being used for indicating a demodulation reference signal (DMRS) port used for PUSCH transmission, wherein the PUSCH transmission is based on single DCI spatial division multiplexing multi-antenna panel simultaneous transmission, receiving second indication information sent by the network device, the second indication information being used for indicating transmission layer information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of TCI states and / or TRPs, and the DMRS port corresponding to each PUSCH transmission occasion is determined, so that the DMRS port used for transmission can be flexibly configured, transmission interference between multi-antenna panels is effectively reduced, the reliability and robustness of transmission are effectively improved, and the system communication efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to an uplink communication method and device based on multi-panel simultaneous transmission. BACKGROUND

[0002] In order to improve the coverage of the cell edge and provide more balanced service quality in the service area, the coordinated multiple point transmission (CoMP) technology is still an important technical means in the NR (New Radio) system. From the perspective of ensuring the robustness of the link connection, the cooperation between multiple transmission and reception points (TRPs) or panels can also be used to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0003] Currently, Rel18 considers simultaneous transmission enhancement based on multi-panel terminal equipment and multiple transmission and reception points (M-TRP) for physical uplink shared channels (PUSCH) and physical uplink control channels (PUCCH). SUMMARY

[0004] The first aspect of the present application provides an uplink communication method based on multi-panel simultaneous transmission, which is executed by a terminal device, and the method comprises the following steps:

[0005] receiving first indication information sent by a network device, wherein the first indication information is used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, and the PUSCH transmission is based on single downlink control information (DCI) and space division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP);

[0006] receiving second indication information sent by the network device, wherein the second indication information is used to indicate transmission rank (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH, and the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs);

[0007] determining DMRS ports corresponding to the PUSCH transmission occasions.

[0008] The second aspect embodiment of the present application provides an uplink communication method based on multi-panel simultaneous transmission, the method is executed by a network device, and the method comprises the following steps:

[0009] sending first indication information to a terminal device, the first indication information being used for indicating total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is single downlink control information (DCI) based simultaneous transmission (STxMP) of space division multiplexing (SDM) multi-antenna panels;

[0010] sending second indication information to the terminal device, the second indication information being used for indicating transmission rank (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs).

[0011] The third aspect embodiment of the present application provides an uplink communication device based on multi-panel simultaneous transmission, the device comprises:

[0012] a transceiver, configured to receive first indication information sent by a network device, the first indication information being used for indicating total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is single downlink control information (DCI) based simultaneous transmission (STxMP) of space division multiplexing (SDM) multi-antenna panels;

[0013] the transceiver is further configured to receive second indication information sent by the network device, the second indication information being used for indicating transmission rank (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs);

[0014] a processing unit, configured to determine DMRS ports corresponding to the plurality of PUSCH transmission occasions.

[0015] The fourth aspect embodiment of the present application provides an uplink communication device based on multi-panel simultaneous transmission, the device comprises:

[0016] a transceiver, configured to send first indication information to a terminal device, the first indication information being used for indicating total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is single downlink control information (DCI) based simultaneous transmission (STxMP) of space division multiplexing (SDM) multi-antenna panels;

[0017] The transceiver unit is further configured to send second indication information to the terminal device, the second indication information being used to indicate transmission rank RANK information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs).

[0018] The fifth aspect of the present application provides a communication device, the device comprising a processor and a memory, the memory storing a computer program, and the processor executing the computer program stored in the memory to enable the device to perform the uplink communication method based on multi-panel simultaneous transmission according to the first aspect of the present application.

[0019] The sixth aspect of the present application provides a communication device, the device comprising a processor and a memory, the memory storing a computer program, and the processor executing the computer program stored in the memory to enable the device to perform the uplink communication method based on multi-panel simultaneous transmission according to the second aspect of the present application.

[0020] The seventh aspect of the present application provides a communication device, the device comprising a processor and an interface circuit, the interface circuit being configured to receive code instructions and transmit the code instructions to the processor, and the processor being configured to execute the code instructions to enable the device to perform the uplink communication method based on multi-panel simultaneous transmission according to the first aspect of the present application.

[0021] The eighth aspect of the present application provides a communication device, the device comprising a processor and an interface circuit, the interface circuit being configured to receive code instructions and transmit the code instructions to the processor, and the processor being configured to execute the code instructions to enable the device to perform the uplink communication method based on multi-panel simultaneous transmission according to the second aspect of the present application.

[0022] The ninth aspect of the present application provides a computer readable storage medium, which stores instructions, and when the instructions are executed, the uplink communication method based on multi-panel simultaneous transmission according to the first aspect of the present application is implemented.

[0023] The tenth aspect of the present application provides a computer readable storage medium, which stores instructions, and when the instructions are executed, the uplink communication method based on multi-panel simultaneous transmission according to the second aspect of the present application is implemented.

[0024] The eleventh aspect of the present application provides a computer program, which, when executed on a computer, enables the computer to perform the uplink communication method based on multi-panel simultaneous transmission according to the first aspect of the present application.

[0025] The twelfth aspect of the present application provides a computer program which, when running on a computer, causes the computer to execute the uplink communication method based on multi-panel simultaneous transmission of the second aspect of the present application.

[0026] The uplink communication method and device based on multi-panel simultaneous transmission provided by the embodiments of the present application can flexibly configure the DMRS port used for transmission by receiving the first indication information sent by the network device, the first indication information being used to indicate the total DMRS port for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP), receiving the second indication information sent by the network device, the second indication information being used to indicate the transmission rank (RANK) information corresponding to each PUSCH transmission occasion of the PUSCH, wherein the plurality of PUSCH transmission occasions are transmitted in the direction corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs), and determining the DMRS port corresponding to each PUSCH transmission occasion, which can flexibly configure the DMRS port used for transmission, effectively reduces the transmission interference between the multi-antenna panels, effectively improves the reliability and robustness of transmission, and improves the system communication efficiency.

[0027] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0029] Figure 1a The figure is a schematic diagram of the architecture of a communication system provided by the embodiments of the present application.

[0030] Figure 1b The figure is a logic diagram of a single-DCI multi-panel sending implementation provided by the embodiments of the present application.

[0031] Figure 2 The figure is a flow diagram of an uplink communication method based on multi-panel simultaneous transmission provided by the embodiments of the present application.

[0032] Figure 3a The figure is a DMRS pattern diagram of type 1 configuration and occupying 1 symbol in time domain.

[0033] Figure 3b The figure is a DMRS pattern diagram of type 1 configuration and occupying 2 symbols in time domain.

[0034] Figure 3cis a DMRS pattern schematic diagram of a configuration type of type2 and occupying 1 symbol in time domain;

[0035] Figure 3d is a DMRS pattern schematic diagram of a configuration type of type2 and occupying 2 symbols in time domain;

[0036] Figure 4 is a flowchart of an uplink communication method based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0037] Figure 5 is a flowchart of an uplink communication method based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0038] Figure 6 is a flowchart of an uplink communication method based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0039] Figure 7 is a structural schematic diagram of an uplink communication device based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0040] Figure 8 is a structural schematic diagram of an uplink communication device based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0041] Figure 9 is a structural schematic diagram of an uplink communication device based on multi-panel simultaneous transmission provided by an embodiment of the present application;

[0042] Figure 10 is a structural schematic diagram of a chip provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the embodiments of the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application, as detailed in the appended claims.

[0044] The terms used in the embodiments of the present application are merely for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present application. The singular forms "a," "an," and "the" used in the embodiments of the present application and the appended claims are intended to include plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0045] It should be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited to these terms. These terms are only used to differentiate one piece of information from another piece of information. For example, without departing from the scope of embodiments of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the words "if" and "when" as used herein can be interpreted as "upon" or "when" or "in response to determining".

[0046] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0047] In order to better understand the uplink communication method based on multi-panel simultaneous transmission disclosed by the embodiments of the present application, the communication system to which the embodiments of the present application are applicable is described first.

[0048] Please refer to Figure 1a , Figure 1a The architecture of a communication system provided by the embodiments of the present application is shown in the figure. The communication system can include, but is not limited to, one network device and one terminal device, Figure 1a The number and form of devices shown in the figure are only for example and do not constitute a limitation on the embodiments of the present application, and in actual applications, two or more network devices and two or more terminal devices can be included. Figure 1a The communication system shown in the figure takes one network device 101 and one terminal device 102 as an example.

[0049] It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example: Long Term Evolution (Long Term Evolution, LTE) system, fifth generation mobile communication system, 5G new air interface system, or other future new mobile communication systems, etc.

[0050] The network device 101 in the embodiments of the present application is an entity for transmitting or receiving signals on the network side. For example, the network device 101 can be an evolved node B (eNB), a transmission reception point (TRP), a next generation node B (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system, and the like. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. The network device provided by the embodiments of the present application can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (Control Unit). The CU-DU structure can split the protocol layer of the network device, for example, the base station, and the functions of part of the protocol layer are controlled by the CU, and the functions of the remaining part or all of the protocol layer are distributed in the DU and controlled by the CU.

[0051] The terminal device 102 in the embodiments of the present application is an entity for receiving or transmitting signals on the user side, such as a mobile phone. The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), and the like. The terminal device can be a car, a smart car, a mobile phone, an Internet of Things (IoT) terminal, 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, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0052] In order to improve the coverage of the cell edge and provide more balanced service quality in the service area, the coordinated multiple point transmission (CoMP) technology is still an important technical means in the NR (New Radio) system. From the perspective of ensuring the robustness of link connection, cooperation between multiple TRPs (Transmission / Reception Point) or panels can also be used to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of blocking effects.

[0053] According to the mapping relationship of the transmitted signal stream to multiple TRPs / panels, the coordinated multiple point transmission technology can be divided into coherent and non-coherent transmission. Among them, in coherent transmission, each data layer is mapped to multiple TRPs / panels through a weight vector. In non-coherent transmission, each data stream is only mapped to part of the TRP / panel. Coherent transmission has higher requirements for synchronization between transmission points and transmission capacity of the backhaul link, and is more sensitive to many non-ideal factors in the real deployment conditions. In contrast, non-coherent transmission is less affected by the above factors, so it is the key consideration scheme of the multi-point transmission technology.

[0054] Currently, Rel 18 considers simultaneous transmission enhancement based on multiple panel (panel) terminal equipment and multiple transmission and reception points (M-TRP) for physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH).

[0055] That is, mainly considering using multi-panel terminals for uplink simultaneous transmission in the Multi-TRP scenario to improve uplink rate and further improve transmission reliability. Transmission can be scheduled based on one DCI carried by one PDCCH channel, or different DCIs carried by different PDCCHs can be considered for separate scheduling. The current synchronization transmission scheme mainly uses the channel without panel to achieve space division multiplexing (SDM) or frequency division multiplexing (FDM) based on space division multiplexing (SDM) or frequency division multiplexing (FDM). As shown in Figure 1b , the channel without panel is used to achieve space division multiplexing (SDM) or frequency division multiplexing (FDM) based on space division multiplexing (SDM) or frequency division multiplexing (FDM). Figure 1bFigure 1 is a logical diagram of a single DCI based multi-panel transmission implementation provided by the present application.

[0056] The terminal multi-panel implementation is generally configured with multiple physical panels, and the capabilities of different panels can also be different. For example, the multiple panels can have different numbers of sounding reference signal (SRS) ports, or the maximum number of data transmission layers supported by the multiple panels can also not be the same. For example, one panel supports a maximum of 2-layer transmission, and another panel supports a maximum of 4-layer transmission. The network scheduler will determine whether the terminal is currently suitable for multi-panel uplink simultaneous transmission. If the terminal is currently suitable for multi-panel uplink simultaneous transmission and is scheduled, 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 demodulation reference signal (DMRS) ports, as well as the indication information of precoding, etc. In the embodiments of the present application, the main problem to be determined is the DMRS port indication under S-DCI scheduling, that is, how to determine which DMRS ports are used for PUSCH transmission on different panels. It should be noted that for the data channel (physical downlink shared channel (PDSCH) / PUSCH) in the NR system, the data layer of data transmission corresponds to the DMRS port used for demodulation.

[0057] It can be understood that the communication system described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that with the evolution of system architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0058] The multi-panel simultaneous transmission based uplink communication method and device provided by the present application will be described in detail below in combination with the accompanying drawings.

[0059] Please refer to Figure 2 , Figure 2FIG. 1 is a flowchart of an uplink communication method based on simultaneous transmission of multiple panels provided by an embodiment of the present application. It should be noted that the uplink communication method based on simultaneous transmission of multiple panels in the embodiment of the present application is executed by a terminal device. The method can be executed independently, or can be executed in combination with any other embodiment of the present application. As shown in FIG. 1, the method can include the following steps: Figure 2

[0060] Step 201, receiving first indication information sent by a network device, the first indication information being used to indicate total DMRS ports for PUSCH transmission.

[0061] In the embodiment of the present application, the PUSCH transmission is simultaneous transmission (STxMP) of multiple antenna panels based on space division multiplexing (SDM) of single downlink control information (DCI; single DCI, S-DCI).

[0062] It should be noted that in Rel 18, the S-DCI-based SDM uplink STxMP scheme includes that different parts of one transmission block (TB) of PUSCH are respectively transmitted on the same time-frequency resource by different panels respectively allocated with respective corresponding DMRS ports or port combinations, and different panels / TRPs / Transmission Occasion (TO) are respectively associated with different Transmission Configuration Indication (TCI) states, i.e., beams.

[0063] The TO of the PUSCH refers to that different data layers of one transmission block of the PUSCH are transmitted on the same time-frequency resource by different panels of the terminal facing different TRPs, wherein the part of the PUSCH data layers transmitted on each panel-TRP transmission link corresponds to one PUSCH transmission occasion.

[0064] In the embodiment of the present application, the terminal device can receive first indication information sent by the network device, and the first indication information can be used to indicate total DMRS ports allocated by the network side for PUSCH transmission.

[0065] In the embodiments of the present application, the number of transmission layers of the PUSCH is at most 4. ​

[0066] Optionally, the first indication information can be DCI.

[0067] Further, the first indication information can be an antenna port indication field in DCI.

[0068] It should be noted that the current DMRS design for data channels (PUSCH / PDSCH) in the NR system mainly includes the following aspects:

[0069] (1) Front-load DMRS: In each scheduling time unit, the first occurrence of DMRS should be as close to the starting point of scheduling 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 (Orthogonal Frequency Division Multiplexing) symbols.

[0070] (2) Additional DMRS: For low-mobility scenarios, front-load DMRS can obtain channel estimation performance that meets demodulation requirements with lower overhead. However, the NR system considers a large dynamic range of mobile speeds, and also needs to consider high-speed scenarios. In addition to front-load DMRS, more DMRS symbols need to be inserted in the scheduling duration in medium / high-speed scenarios to meet the estimation accuracy of channel time variation. To solve this problem, the NR system adopts a DMRS structure that combines front-load DMRS and additional DMRS with time-domain density configurable. Each group of additional DMRS patterns is a repetition of front-load DMRS.

[0071] In each scheduling time unit, if there is additional DMRS, the pattern of each group of additional DMRS is consistent with front-load DMRS. Therefore, the pattern design of front-load DMRS is the basis of DMRS design. The design idea of front-load DMRS is divided into two categories, of which the first category (type 1) is designed based on COMB (comb code) + OCC (Orthogonal Cover Code) structure, and the second category (type 2) is designed based on FDM + OCC structure.

[0072] Depending on the number of orthogonal ports used for transmission, the front-load DMRS can be configured for up to two OFDM symbols. Considering the power utilization efficiency, when the front-load DMRS uses two symbols, TD-OCC (Time Domain-OCC) is used in the time domain in addition to the frequency domain CS or OCC.

[0073] Two configuration types of front-load DMRS patterns are shown in FIG. 1 and FIG. 2. In the figures, Figures 3a to 3d Figure 3a is a DMRS pattern diagram of type 1 configuration occupying 1 symbol in the time domain, Figure 3b is a DMRS pattern diagram of type 1 configuration occupying 2 symbols in the time domain, Figure 3c is a DMRS pattern diagram of type 2 configuration occupying 1 symbol in the time domain, Figure 3d is a DMRS pattern diagram of type 2 configuration occupying 2 symbols in the time domain.

[0074] It can be understood that DMRS ports occupying the same frequency domain resource in the figure need to be distinguished by code division multiplexing, belonging to the same CDM (Code Division Multiplexing) group. As shown in Figure 3a , in the pattern shown in the figure, DMRS ports 0, 1 belong to the same CDM group of DMRS, and DMRS ports 2, 3 belong to the same CDM group of DMRS. Similarly, as shown in Figure 3b , in the pattern shown in the figure, DMRS ports 0, 1, 4, 5 belong to the same CDM group of DMRS, and DMRS ports 2, 3, 6, 7 belong to the same CDM group of DMRS. As shown in Figure 3c , in the pattern shown in the figure, DMRS ports 0, 1 belong to the same CDM group of DMRS, DMRS ports 2, 3 belong to the same CDM group of DMRS, and DMRS ports 4, 5 belong to the same CDM group of DMRS. As shown in Figure 3d , in the pattern shown in the figure, DMRS ports 0, 1, 6, 7 belong to the same CDM group of DMRS, DMRS ports 2, 3, 8, 9 belong to the same CDM group of DMRS, and DMRS ports 4, 5, 10, 11 belong to the same CDM group of DMRS.

[0075] ​In the embodiments of the present application, as an example, the DMRS port allocation of different parameter configurations under the uplink cyclic prefix OFDM (CP-OFDM) waveform is shown in the following tables. Optionally, the first indication information can be a code point in an indication field in the DCI, and different code points indicate different DMRS ports allocated (for example, in the case of DMRS type 1, the number of symbols occupied by the front-loaded DMRS is 1, and the number of data transmission layers is 2, the first indication information takes a value of 0 to indicate that the total DMRS port allocated to the PUSCH is the DMRS port numbered 0 and 1, and the DMRS port numbered 0 and 1 belong to the same CDM group; for another example, in the case of DMRS type 1, the number of symbols occupied by the front-loaded DMRS is 1, and the number of data transmission layers is 3, the first indication information takes a value of 0 to indicate that the total DMRS port allocated to the PUSCH is the DMRS port numbered 0, 1, and 2, and the DMRS port numbered 0 and 1 belong to the same CDM group, and the DMRS port numbered 2 belongs to another CDM group).

[0076] Table 1: DMRS type dmrs-Type = 1, maximum symbol length maxLength = 1, number of data transmission layers rank = 1

[0077]

[0078] Table 2: dmrs-Type = 1, maxLength = 1, rank = 2

[0079] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 1 0,1 1 2 0,1 2 2 2,3 3 2 0,2 4-7 Reserved Reserved

[0080] Table 3: dmrs-Type = 1, maxLength = 1, rank = 3

[0081] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 2 0-2 2-7 Reserved Reserved

[0082] Table 4: dmrs-Type = 1, maxLength = 1, rank = 4

[0083] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 2 0-3 2-7 Reserved Reserved

[0084] Table 5: dmrs-Type = 1, maxLength = 2, rank = 1

[0085]

[0086] Table 6: dmrs-Type = 1, maxLength = 2, rank = 2

[0087]

[0088] Table 7: dmrs-Type = 1, maxLength = 2, rank = 3

[0089]

[0090]

[0091] Table 8: dmrs-Type = 1, maxLength = 2, rank = 4

[0092] Value Number of DMRS CDM group(s)without data DMRS port(s) Number of front-load symbols 0 2 0-3 1 1 2 0,1,4,5 2 2 2 2,3,6,7 2 3 2 0,2,4,6 2 4-15 Reserved Reserved Reserved

[0093] Table 9: dmrs-Type = 2, maxLength = 1, rank = 1

[0094] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 1 0 1 1 1 2 2 0 3 2 1 4 2 2 5 2 3 6 3 0 7 3 1 8 3 2 9 3 3 10 3 4 11 3 5 12-15 Reserved Reserved

[0095] Table 10: dmrs-Type = 2, maxLength = 1, rank = 2

[0096] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 1 0,1 1 2 0,1 2 2 2,3 3 3 0,1 4 3 2,3 5 3 4,5 6 2 0,2 7-15 Reserved Reserved

[0097] Table 11: dmrs-Type = 2, maxLength = 1, rank = 3

[0098]

[0099]

[0100] Table 12: dmrs-Type = 2, maxLength = 1, rank = 4

[0101] Value Number of DMRS CDM group(s)without data DMRS port(s) 0 2 0-3 1 3 0-3 2-15 Number of front-load symbols Reserved

[0102] Table 13: dmrs-Type = 2, maxLength = 2, rank = 1

[0103]

[0104]

[0105] Table 14: dmrs-Type = 2, maxLength = 2, rank = 2

[0106]

[0107] Table 15: dmrs-Type = 2, maxLength = 2, rank = 3

[0108] Reserved Reserved Value Number of DMRS CDM group(s)without data 0 2 0-2 1 1 3 0-2 1 2 3 3-5 1 3 3 0,1,6 2 4 3 2,3,8 2 5 3 4,5,10 2 6-31 DMRS port(s) Number of front-load symbols Reserved

[0109] Table 16: dmrs-Type = 2, maxLength = 2, rank = 4

[0110] Reserved Reserved Figure 4 Figure 4 0 2 0-3 1 1 3 0-3 1 2 3 0,1,6,7 2 3 3 2,3,8,9 2 4 3 4,5,10,11 2 5-31 Figure 4 Figure 5 Figure 5

[0111] It can be understood that each element in the above table is independent, and the 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 the table. Therefore, those skilled in the art can understand that the value of each element in the table is an independent embodiment.

[0112] In step 202, the second indication information sent by the network device is received, and the second indication information is used to indicate the number of transmission layers information corresponding to the plurality of PUSCH transmission occasions of the PUSCH respectively.

[0113] The plurality of PUSCH transmission occasions are transmitted in the directions corresponding to the plurality of TCI states and / or TRPs.

[0114] In the embodiment of the present application, the terminal device can receive the second indication information sent by the network device, and determine the number of transmission layers information corresponding to the plurality of PUSCH transmission occasions of the PUSCH respectively according to the indication of the second indication information.

[0115] Optionally, the second indication information can be SRS resource set indicator.

[0116] In the embodiment of the present application, the PUSCH transmission occasion has a corresponding relationship with at least one of the following:

[0117] Codeword (CW);

[0118] Panel;

[0119] SRS resource set;

[0120] SRS resource indicator (SRI) indication field;

[0121] Transmit precoding matrix indicator (TPMI) indication field;

[0122] Transmission reception point (TRP);

[0123] TCI state for indicating a beam.

[0124] In M-TRP transmission, two SRS resource sets are supported, thus two SRI fields associated with the two SRS resource sets are contained in DCI, each SRI indication field indicates the SRS resource in the SRS resource set associated with the SRI indication field for one TRP. The two SRI indication fields correspond to different PUSCH transmission occasions. The transmission scheduling of single TRP and multi-TRP can be dynamically indicated by the indication field indicated by the SRS resource set.

[0125] In some embodiments, the number of transmission layers of the PUSCH transmission occasion corresponding to the first SRI indication field or the first TPMI indication field in the two SRI / TPMI indication fields is R1, and the number of transmission layers of the PUSCH transmission occasion corresponding to the second SRI indication field or the second TPMI indication field in the two SRI / TPMI indication fields is R2, and the second indication information can be used to indicate the R1 and the R2.

[0126] In some embodiments, in codebook-based PUSCH transmission, the PUSCH transmission occasion corresponds to the SRI indication field, and the associated SRS resource set is indicated by the SRI indication field; in non-codebook-based PUSCH transmission, the PUSCH transmission occasion corresponds to the TPMI indication field, and the associated SRS resource set is indicated by the TPMI indication field.

[0127] In some embodiments, the second indication information can respectively indicate the transmission layer number information corresponding to the plurality of transmission occasions, or can be combined to indicate the combination information of the transmission layer numbers corresponding to the plurality of transmission occasions.

[0128] As an example, the second indication information can be combined to indicate the transmission layer number information of the PUSCH transmission occasion corresponding to the first SRI / TPMI indication field and the PUSCH transmission occasion corresponding to the second SRI / TPMI indication field, that is, the combination information of the R1 and the R2, such as indicating that the combination information of the transmission layer numbers corresponding to the two transmission occasions is {R1, R2}.

[0129] In some embodiments, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is predefined.

[0130] In some embodiments, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is indicated by the indication field indicated by the SRS resource set.

[0131] As a possible embodiment, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is:

[0132] The PUSCH transmission occasion transmitted in the first direction corresponds to the first SRI field or the first TPMI field;

[0133] The PUSCH transmission occasion transmitted in the second direction corresponds to the second SRI field or the second TPMI field;

[0134] The first direction corresponds to the first TCI state and / or the first TRP, and the second direction corresponds to the second TCI state and / or the second TRP.

[0135] As another possible implementation, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is as follows:

[0136] The PUSCH transmission occasion transmitted in the first direction corresponds to the second SRI field or the second TPMI field;

[0137] The PUSCH transmission occasion transmitted in the second direction corresponds to the first SRI field or the first TPMI field;

[0138] The first direction corresponds to the first TCI state and / or the first TRP, and the second direction corresponds to the second TCI state and / or the second TRP.

[0139] In some embodiments, the second indication information is an SRS resource set indication, the first codepoint included in the SRS resource set indication is used to indicate combination information of the transmission layer number being {R1, R2}, wherein the PUSCH transmission occasion with the transmission layer number R1 is transmitted in the first direction, and the PUSCH transmission occasion with the transmission layer number R2 is transmitted in the second direction;

[0140] The second codepoint included in the indication field of the SRS resource set indication is used to indicate combination information of the transmission layer number being {R2, R1}, wherein the PUSCH transmission occasion with the transmission layer number R2 is transmitted in the first direction, and the PUSCH transmission occasion with the transmission layer number R1 is transmitted in the second direction;

[0141] The first direction corresponds to the first TCI state and / or the first TRP, and the second direction corresponds to the second TCI state and / or the second TRP.

[0142] In the embodiments of the present application, the first indication information and the second indication information can be the same indication information, or can be different indication information.

[0143] Step 203, determining the DMRS port corresponding to each PUSCH transmission occasion.

[0144] In the embodiments of the present application, the terminal device can determine the DMRS port corresponding to each PUSCH transmission occasion.

[0145] In some embodiments, the terminal device can determine the DMRS port corresponding to each PUSCH transmission occasion based on a fixed rule.

[0146] Optionally, the fixed rule can be to determine the DMRS port corresponding to each PUSCH transmission occasion according to the order of the number of DMRS ports.

[0147] In some embodiments, the terminal device can determine whether the DMRS port indicated by the first indication information belongs to the same CDM group.

[0148] Optionally, in the case where each DMRS port indicated by the first indication information does not belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, the first DMRS port belongs to the same CDM group, and the second DMRS port belongs to another CDM group.

[0149] Optionally, in the case where each DMRS port indicated by the first indication information does not belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, the first DMRS port is the adjacent DMRS port after arranging the number of DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0150] Optionally, in the case where the first indication information indicates that the DMRS ports belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the number of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, and the first DMRS port is the adjacent DMRS port after arranging the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0151] In summary, by receiving the first indication information sent by the network device, the first indication information is used to indicate the total DMRS port for PUSCH transmission, wherein the PUSCH transmission is based on S-DCI SDM multi-antenna panel simultaneous transmission STxMP, receiving the second indication information sent by the network device, the second indication information is used to indicate the transmission layer RANK information corresponding to the plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in the direction corresponding to the plurality of TCI states and / or TRPs, and the DMRS port corresponding to each PUSCH transmission occasion is determined, the DMRS port used for transmission can be flexibly configured, the transmission interference between the multi-antenna panels is effectively reduced, the reliability and robustness of the transmission are effectively improved, and the system communication efficiency is improved.

[0152] Please refer to Figure 5 , Figure 6 is a flowchart of an uplink communication method based on multi-panel simultaneous transmission provided by the embodiment of the application. It should be noted that the uplink communication method based on multi-panel simultaneous transmission of the embodiment of the application is executed by a terminal device. The method can be executed independently, or can be executed in combination with any other embodiment of the application. As shown in Figure 6 , the method can include the following steps:

[0153] Step 401, receiving the first indication information sent by the network device, the first indication information is used to indicate the total DMRS port for PUSCH transmission.

[0154] In the embodiment of the application, the PUSCH transmission is based on S-DCI SDM multi-antenna panel simultaneous transmission STxMP.

[0155] In the embodiments of the present application, the terminal device can receive first indication information sent by the network device, and the first indication information can be used to indicate that the network side allocates a total number of DMRS ports for PUSCH transmission.

[0156] In the embodiments of the present application, the number of transmission layers of the PUSCH is at most 4.

[0157] It can be understood that the number of ports of the total number of DMRS ports indicated by the first indication information is equal to the number of transmission layers of the PUSCH.

[0158] Optionally, the first indication information can be DCI.

[0159] In step 402, second indication information sent by the network device is received, and the second indication information is used to indicate transmission layer combination information corresponding to a plurality of PUSCH transmission occasions of the PUSCH.

[0160] The plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of TCI states and / or TRPs.

[0161] In the embodiments of the present application, the terminal device can receive second indication information sent by the network device, and determine transmission layer information corresponding to a plurality of PUSCH transmission occasions of the PUSCH according to indication of the second indication information.

[0162] In the embodiments of the present application, the second indication information can be used to indicate combination information of transmission layers corresponding to the plurality of transmission occasions.

[0163] Optionally, the second indication information can be SRS resource set indication (SRS resource set indicator).

[0164] In the embodiments of the present application, the PUSCH transmission occasion has a corresponding relationship with at least one of the following:

[0165] Code word; panel; SRS resource set; SRI indication field; TPMI indication field; transmission and reception point (TRP); TCI state used to indicate a beam.

[0166] In the embodiments of the present application, two SRI indication fields and / or two TPMI indication fields are included. The transmission layer of the PUSCH transmission occasion corresponding to the first SRI indication field or the first TPMI indication field in the two SRI / TPMI indication fields is R1, and the transmission layer of the PUSCH transmission occasion corresponding to the second SRI indication field or the second TPMI indication field in the two SRI / TPMI indication fields is R2. The second indication information can be used to indicate combination information of the R1 and the R2.

[0167] In the codebook-based PUSCH transmission, the PUSCH transmission occasion corresponds to the SRI indication field, and the associated SRS resource set is indicated by the SRI indication field; in the non-codebook-based PUSCH transmission, the PUSCH transmission occasion corresponds to the TPMI indication field, and the associated SRS resource set is indicated by the TPMI indication field.

[0168] In some embodiments, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is predefined.

[0169] In some embodiments, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is indicated by the indication field indicated by the SRS resource set.

[0170] As a possible implementation, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is as follows:

[0171] The PUSCH transmission occasion transmitted in the first direction corresponds to the first SRI field or the first TPMI field;

[0172] The PUSCH transmission occasion transmitted in the second direction corresponds to the second SRI field or the second TPMI field;

[0173] Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0174] As another possible implementation, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is as follows:

[0175] The PUSCH transmission occasion transmitted in the first direction corresponds to the second SRI field or the second TPMI field;

[0176] The PUSCH transmission occasion transmitted in the second direction corresponds to the first SRI field or the first TPMI field;

[0177] Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0178] In some embodiments, the second indication information is an SRS resource set indication, the first codepoint included in the SRS resource set indication is used to indicate combination information of the transmission layer number being {R1, R2}, wherein the PUSCH transmission occasion with the transmission layer number being R1 is transmitted in the first direction, and the PUSCH transmission occasion with the transmission layer number being R2 is transmitted in the second direction.

[0179] The second codepoint included in the indication field of the SRS resource set indication is used to indicate combination information of the transmission layer number being {R2, R1}, wherein the PUSCH transmission occasion with the transmission layer number being R2 is transmitted in the first direction, and the PUSCH transmission occasion with the transmission layer number being R1 is transmitted in the second direction.

[0180] The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0181] It can be understood that the indication field of the SRS resource set indication can include multiple codepoints.

[0182] As an example, the first codepoint (such as codepoint “10” or codepoint “11”, etc.) included in the indication field of the SRS resource set indication is used to indicate that the PUSCH transmission occasion corresponding to the first SRI field or the first TPMI field is transmitted in the first direction, and the transmission layer number of the PUSCH transmission occasion is R1; and the PUSCH transmission occasion corresponding to the second SRI field or the second TPMI field is transmitted in the second direction, and the transmission layer number of the PUSCH transmission occasion is R2.

[0183] The second codepoint (such as codepoint “11” or codepoint “10”, etc.) included in the indication field of the SRS resource set indication is used to indicate that the PUSCH transmission occasion corresponding to the first SRI field or the first TPMI field is transmitted in the second direction, and the transmission layer number of the PUSCH transmission occasion is R1; and the PUSCH transmission occasion corresponding to the second SRI field or the second TPMI field is transmitted in the first direction, and the transmission layer number of the PUSCH transmission occasion is R2.

[0184] The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0185] It can be understood that R1+R2 is equal to the transmission layer number of the PUSCH.

[0186] In step 403, it is judged whether the DMRS ports indicated by the first indication information belong to the same code division multiplexing (CDM) group.

[0187] In the embodiments of the present application, the terminal device can determine whether the DMRS ports indicated by the first indication information belong to the same CDM group.

[0188] At step 404, in the case that the DMRS ports indicated by the first indication information do not belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the first DMRS port belongs to the same CDM group, and the second DMRS port belongs to another CDM group.

[0189] It can be understood that the number of the first DMRS ports is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, and the number of the second DMRS ports is equal to the number of transmission layers corresponding to the second PUSCH.

[0190] It can also be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the second PUSCH transmission occasion can correspond to the second SRI field / second TPMI field; or the second PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the first PUSCH transmission occasion can correspond to the second SRI field / second TPMI field.

[0191] In the embodiments of the present application, in the case that it is determined that the DMRS ports indicated by the first indication information do not belong to the same CDM group, the terminal device can divide the DMRS ports indicated by the first indication information according to the CDM groups, and assign the DMRS ports belonging to the same CDM group to one PUSCH transmission occasion.

[0192] As an example, the number of transmission layers of the PUSCH is 3, the number of transmission layers of the first PUSCH transmission occasion is 2, and the number of transmission layers of the second PUSCH transmission occasion is 1. The DMRS ports indicated by the first indication information are 0, 1, and 2, wherein the ports {0, 1} belong to the same CDM group, and the port {2} belongs to another CDM group. Then, the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports numbered 0 and 1, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port numbered 2.

[0193] It can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, or the second SRI field / second TPMI field. The first PUSCH transmission occasion can be transmitted in the direction corresponding to the first TCI state and / or the first TRP, or can be transmitted in the direction corresponding to the second TCI state and / or the second TRP.

[0194] Step 405, in the case that the respective DMRS ports indicated by the first indication information belong to the same CDM group, determining a first DMRS port corresponding to the first PUSCH transmission occasion and a second DMRS port corresponding to the second PUSCH transmission occasion, wherein the first DMRS port is the DMRS port with adjacent numbering after arranging the DMRS ports indicated by the first indication information in the first order, and the second DMRS port is the remaining DMRS port.

[0195] It can be understood that the number of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, and the number of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH.

[0196] In addition, it can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the second PUSCH transmission occasion can correspond to the second SRI field / second TPMI field; or the second PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the first PUSCH transmission occasion can correspond to the second SRI field / second TPMI field.

[0197] In the embodiments of the present application, in the case that the respective DMRS ports indicated by the first indication information belong to the same CDM group, the terminal device can arrange the respective DMRS ports indicated by the first indication information in the first order of numbering and assign the DMRS ports with adjacent numbering to one PUSCH transmission occasion.

[0198] As an example, the number of transmission layers of the PUSCH is 3, the number of transmission layers of the first PUSCH transmission occasion is 2, and the number of transmission layers of the second PUSCH transmission occasion is 1. The DMRS ports indicated by the first indication information are 0, 1, and 6, which belong to the same CDM group. The first order can be from small to large, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 0 and 1, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 6. The first order can also be from large to small, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 1 and 6, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 0.

[0199] It can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, or the second SRI field / second TPMI field. The first PUSCH transmission occasion can be transmitted in the direction corresponding to the first TCI state and / or the first TRP, or can be transmitted in the direction corresponding to the second TCI state and / or the second TRP.

[0200] In summary, by receiving first indication information sent by a network device, the first indication information being used to indicate total DMRS ports for PUSCH transmission, receiving second indication information sent by the network device, the second indication information being used to indicate transmission layer combination information corresponding to multiple PUSCH transmission occasions of the PUSCH respectively, judging whether each DMRS port indicated by the first indication information belongs to a same code division multiplexing (CDM) group, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, determining a first DMRS port corresponding to a first PUSCH transmission occasion and a second DMRS port corresponding to a second PUSCH transmission occasion, wherein the first DMRS port belongs to the same CDM group and the second DMRS port belongs to another CDM group, in the case that each DMRS port indicated by the first indication information belongs to the same CDM group, determining a first DMRS port corresponding to a first PUSCH transmission occasion and a second DMRS port corresponding to a second PUSCH transmission occasion, wherein the first DMRS port is a DMRS port adjacent in a first order after arranging the DMRS ports indicated by the first indication information in the first order, and the second DMRS port is a remaining DMRS port, the DMRS ports used for transmission can be flexibly configured, and the DMRS ports of the same CDM group can be used for transmission of one PUSCH transmission occasion, which more effectively reduces transmission interference between multiple antenna panels, improves transmission reliability and robustness, improves system communication efficiency, and achieves better transmission effect.

[0201] Please refer to Figure 6 , Figure 7 is a flowchart of an uplink communication method based on multi-panel simultaneous transmission provided by an embodiment of the present application. It should be noted that the uplink communication method based on multi-panel simultaneous transmission of the present embodiment is executed by a terminal device. The method can be executed independently, or can be executed in combination with any other embodiment of the present application. As shown in Figure 7 , the method can include the following steps:

[0202] Step 501, receiving first indication information sent by a network device, the first indication information being used to indicate total DMRS ports for PUSCH transmission.

[0203] Step 502, receiving second indication information sent by the network device, the second indication information being used to indicate transmission layer combination information corresponding to multiple PUSCH transmission occasions of the PUSCH respectively.

[0204] Step 503, judging whether each DMRS port indicated by the first indication information belongs to a same code division multiplexing (CDM) group.

[0205] In the embodiments of the present application, steps 501 and 503 can be implemented in any of the embodiments of the present application, and the embodiments of the present application do not limit this and will not be repeated.

[0206] Step 504, in the case where the first indication information indicates that the DMRS ports do not belong to the same CDM group, determining the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion, wherein the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in the first order, and the second DMRS port is the remaining DMRS port.

[0207] It can be understood that the number of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, and the number of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH.

[0208] In addition, it can be understood that the first PUSCH transmission occasion can correspond to the first SRI domain / first TPMI domain, and the second PUSCH transmission occasion can correspond to the second SRI domain / second TPMI domain; or the second PUSCH transmission occasion can correspond to the first SRI domain / first TPMI domain, and the first PUSCH transmission occasion can correspond to the second SRI domain / second TPMI domain.

[0209] In the embodiments of the present application, in the case where it is determined that the DMRS ports indicated by the first indication information do not belong to the same CDM group, the terminal device can arrange the DMRS ports indicated by the first indication information in the first order of numbers, and assign the adjacent DMRS ports to one PUSCH transmission occasion.

[0210] As an example, the number of transmission layers of the PUSCH is 3, the number of transmission layers of the first PUSCH transmission occasion is 2, and the number of transmission layers of the second PUSCH transmission occasion is 1. The DMRS ports indicated by the first indication information are 0, 1, and 6, which belong to the same CDM group. The first order can be from small to large, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 0 and 1, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 6. The first order can also be from large to small, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 1 and 6, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 0.

[0211] It can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, or can correspond to the second SRI field / second TPMI field. The first PUSCH transmission occasion can be transmitted in the direction corresponding to the first TCI state and / or the first TRP, or can be transmitted in the direction corresponding to the second TCI state and / or the second TRP.

[0212] In step 505, in a case where the DMRS ports indicated by the first indication information belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the first DMRS port is the DMRS port adjacent in the first order after arranging the DMRS ports indicated by the first indication information in the first order, and the second DMRS port is the remaining DMRS port.

[0213] It can be understood that the number of the first DMRS ports is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, and the number of the second DMRS ports is equal to the number of transmission layers corresponding to the second PUSCH.

[0214] In addition, it can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the second PUSCH transmission occasion can correspond to the second SRI field / second TPMI field; or the second PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, and the first PUSCH transmission occasion can correspond to the second SRI field / second TPMI field.

[0215] In the embodiment of the present application, in a case where it is determined that the DMRS ports indicated by the first indication information belong to the same CDM group, the terminal device can arrange the DMRS ports indicated by the first indication information in the first order according to the number, and assign the DMRS ports adjacent in the first order to one PUSCH transmission occasion.

[0216] As an example, the number of transmission layers of the PUSCH is 3, the number of transmission layers of the first PUSCH transmission occasion is 2, and the number of transmission layers of the second PUSCH transmission occasion is 1. The DMRS ports indicated by the first indication information are 0, 1, and 6, and belong to the same CDM group. The first order can be from small to large, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 0 and 1, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 6. The first order can also be from large to small, and the DMRS ports corresponding to the first PUSCH transmission occasion are the DMRS ports with numbers 1 and 6, and the DMRS port corresponding to the second PUSCH transmission occasion is the DMRS port with number 0.

[0217] It can be understood that the first PUSCH transmission occasion can correspond to the first SRI field / first TPMI field, or can correspond to the second SRI field / second TPMI field. The first PUSCH transmission occasion can be transmitted in a direction corresponding to the first TCI state and / or the first TRP, or can be transmitted in a direction corresponding to the second TCI state and / or the second TRP.

[0218] To sum up, by receiving the first indication information sent by the network device, the first indication information being used for indicating total DMRS ports for PUSCH transmission, receiving the second indication information sent by the network device, the second indication information being used for indicating transmission layer array combination information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, judging whether each DMRS port indicated by the first indication information belongs to a same code division multiplexing (CDM) group, in a case where each DMRS port indicated by the first indication information does not belong to the same CDM group, determining a first DMRS port corresponding to a first PUSCH transmission occasion and a second DMRS port corresponding to a second PUSCH transmission occasion, wherein the first DMRS port is a DMRS port adjacent in sequence after arranging numbers of the DMRS ports indicated by the first indication information in a first sequence, and the second DMRS port is a remaining DMRS port, and in a case where each DMRS port indicated by the first indication information belongs to the same CDM group, determining a first DMRS port corresponding to a first PUSCH transmission occasion and a second DMRS port corresponding to a second PUSCH transmission occasion, wherein the first DMRS port is a DMRS port adjacent in sequence after arranging numbers of the DMRS ports indicated by the first indication information in a first sequence, and the second DMRS port is a remaining DMRS port, the DMRS ports used for transmission can be flexibly configured, the transmission interference between multiple antenna panels is effectively reduced, the reliability and robustness of transmission are effectively improved, and the system communication efficiency is improved.

[0219] In an embodiment of the present application, as an example, the second indication information can indicate that the number of transmission layers of the first PUSCH transmission occasion is R1, and the number of transmission layers of the second PUSCH transmission occasion is R2. The first PUSCH transmission occasion is a transmission occasion corresponding to the first SRI field / first TPMI field, and the second PUSCH transmission occasion is a transmission occasion corresponding to the second SRI field / second TPMI field. The first PUSCH transmission occasion is transmitted in a first direction (a direction corresponding to the first TCI state and / or the first TRP), and the second PUSCH transmission occasion is transmitted in a second direction (a direction corresponding to the second TCI state and / or the second TRP).

[0220] The terminal device determines the DMRS ports corresponding to the first PUSCH transmission occasion and the second PUSCH transmission occasion respectively, and the terminal device can determine whether the DMRS ports indicated by the first indication information belong to the same CDM group.

[0221] In the case where the DMRS ports indicated by the first indication information do not belong to the same CDM group, the plurality of DMRS ports can be divided according to the CDM groups, R1 DMRS ports belonging to the same CDM group are allocated to the first PUSCH transmission occasion, and R2 DMRS ports belonging to another CDM group are allocated to the second PUSCH transmission occasion.

[0222] In the case where the DMRS ports indicated by the first indication information do not belong to the same CDM group, the DMRS ports indicated by the first indication information can also be arranged according to the first order of numbering, R1 adjacent DMRS ports (for example, the first R1 DMRS ports after sorting from small to large, or the first R1 DMRS ports after sorting from large to small, etc.) are allocated to the first PUSCH transmission occasion, and the remaining R2 DMRS ports are allocated to the second PUSCH transmission occasion.

[0223] In the case where the DMRS ports indicated by the first indication information belong to the same CDM group, the DMRS ports indicated by the first indication information can be arranged according to the first order of numbering, R1 adjacent DMRS ports (for example, the first R1 DMRS ports after sorting from small to large, or the first R1 DMRS ports after sorting from large to small, etc.) are allocated to the first PUSCH transmission occasion, and the remaining R2 DMRS ports are allocated to the second PUSCH transmission occasion.

[0224] As another example, the second indication information can indicate that the number of transmission layers of the first PUSCH transmission occasion is R1, and the number of transmission layers of the second PUSCH transmission occasion is R2. The first PUSCH transmission occasion is the transmission occasion corresponding to the first SRI domain / first TPMI domain, and the second PUSCH transmission occasion is the transmission occasion corresponding to the second SRI domain / second TPMI domain. The first PUSCH transmission occasion is transmitted in the second direction (the direction corresponding to the second TCI state and / or the second TRP), and the second PUSCH transmission occasion is transmitted in the first direction (the direction corresponding to the first TCI state and / or the first TRP).

[0225] The terminal device determines the DMRS ports corresponding to the first PUSCH transmission occasion and the second PUSCH transmission occasion respectively, and the terminal device can determine whether the DMRS ports indicated by the first indication information belong to the same CDM group.

[0226] In a case where the respective DMRS ports indicated by the first indication information do not belong to the same CDM group, the plurality of DMRS ports can be divided according to the CDM groups, R1 DMRS ports belonging to the same CDM group are allocated to the first PUSCH transmission occasion, and R2 DMRS ports belonging to another CDM group are allocated to the second PUSCH transmission occasion.

[0227] In a case where the respective DMRS ports indicated by the first indication information do not belong to the same CDM group, the DMRS ports indicated by the first indication information can also be arranged according to the first order of numbering, R1 adjacent DMRS ports (for example, the first R1 DMRS ports after sorting from small to large, or the first R1 DMRS ports after sorting from large to small, etc.) are allocated to the first PUSCH transmission occasion, and the remaining R2 DMRS ports are allocated to the second PUSCH transmission occasion.

[0228] In a case where the respective DMRS ports indicated by the first indication information belong to the same CDM group, the DMRS ports indicated by the first indication information can be arranged according to the first order of numbering, R1 adjacent DMRS ports (for example, the first R1 DMRS ports after sorting from small to large, or the first R1 DMRS ports after sorting from large to small, etc.) are allocated to the first PUSCH transmission occasion, and the remaining R2 DMRS ports are allocated to the second PUSCH transmission occasion.

[0229] See Figure 7 , Figure 8 is a flow diagram of an uplink communication method based on multi-panel simultaneous transmission provided by an embodiment of the present application. It should be noted that the uplink communication method based on multi-panel simultaneous transmission of the present application is executed by a network device. The method can be executed independently, or can be executed in combination with any other embodiment of the present application. As Figure 8 shown, the method can include the following steps:

[0230] Step 601, sending first indication information to a terminal device, the first indication information being used to indicate total DMRS ports for PUSCH transmission.

[0231] In the present embodiment of the present application, the PUSCH transmission is single-DCI-based spatial division multiplexing SDM multi-antenna panel simultaneous transmission STxMP.

[0232] It should be noted that in Rel 18, for S-DCI based SDM uplink STxMP scheme, different parts of one transport block (TB) of PUSCH are respectively transmitted on the same time-frequency resource by different panels respectively through respective corresponding DMRS ports or port combinations allocated on different panels / TRPs, and different panels / TRPs / transmission occasions are respectively associated with different TCI states (i.e., beams).

[0233] The TO of PUSCH refers to transmission of different data layers of one transport block of PUSCH on the same time-frequency resource by different panels of the terminal facing different TRPs, wherein the part of PUSCH data layers transmitted on each panel-TRP transmission link corresponds to one PUSCH transmission occasion.

[0234] In the embodiments of the present application, the terminal device can receive first indication information sent by the network device, and the first indication information can be used to indicate the total DMRS ports allocated by the network side for PUSCH transmission.

[0235] In the embodiments of the present application, the number of transmission layers of the PUSCH is at most 4.

[0236] Optionally, the first indication information can be DCI.

[0237] Further, the first indication information can be an antenna port (antenna ports) indication field in DCI.

[0238] In the embodiments of the present application, as an example, the DMRS port allocation of different parameter configurations under uplink cyclic prefix OFDM (CP-OFDM) waveform can be as shown in the tables in the foregoing embodiments of the present application, which will not be repeated here.

[0239] Optionally, the first indication information can be a code point in an indication field in DCI, and different code points indicate different DMRS ports allocated (for example, in the case of DMRS type 1, one symbol occupied by the front DMRS, and two data transmission layers, the first indication information takes a value of 0 to indicate that the total DMRS ports allocated to the PUSCH are DMRS ports numbered 0 and 1, and the DMRS ports numbered 0 and 1 belong to the same CDM group; for example, in the case of DMRS type 1, one symbol occupied by the front DMRS, and three data transmission layers, the first indication information takes a value of 0 to indicate that the total DMRS ports allocated to the PUSCH are DMRS ports numbered 0, 1, and 2, and the DMRS ports numbered 0 and 1 belong to the same CDM group, and the DMRS port numbered 2 belongs to another CDM group).

[0240] In step 602, second indication information is sent to the terminal device, and the second indication information is used to indicate the number of transmission layers corresponding to each of the plurality of PUSCH transmission occasions of the PUSCH.

[0241] The plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of TCI states and / or TRPs.

[0242] In the embodiments of the present application, the terminal device can receive the second indication information sent by the network device, and determine the number of transmission layers corresponding to each of the plurality of PUSCH transmission occasions of the PUSCH according to the indication of the second indication information.

[0243] Optionally, the second indication information can be SRS resource set indication (SRS resource set indicator).

[0244] In the embodiments of the present application, the PUSCH transmission occasion has a corresponding relationship with at least one of the following:

[0245] Codeword (CW);

[0246] Panel;

[0247] SRS resource set (SRS resource set);

[0248] SRS resource indication (SRS Resource Indicator) indication field;

[0249] Transmit precoding matrix indication (Transmit Precoding Matrix Indicator) indication field;

[0250] Transmission reception point (TRP);

[0251] TCI state used to indicate a beam.

[0252] In M-TRP transmission, two SRS resource sets are supported, so two SRI fields associated with the two SRS resource sets are included in the DCI, and each SRI indication field indicates the SRS resource in the SRS resource set associated with the SRI field for one TRP. The two SRI indication fields correspond to different PUSCH transmission occasions. The transmission scheduling of single TRP and multi-TRP can be dynamically indicated by the indication field of the SRS resource set indication.

[0253] In some embodiments, a first SRI indication field or a first TPMI indication field in the two SRI / TPMI indication fields corresponds to a transmission layer number R1 of a PUSCH transmission occasion, and a second SRI indication field or a second TPMI indication field in the two SRI / TPMI indication fields corresponds to a transmission layer number R2 of a PUSCH transmission occasion, and the second indication information can be used to indicate the R1 and the R2.

[0254] In some embodiments, the second indication information can be used to indicate a transmission layer number of a PUSCH transmission occasion corresponding to the first SRI / TPMI indication field, and a transmission layer number of a PUSCH transmission occasion corresponding to the second SRI / TPMI indication field.

[0255] In some embodiments, the second indication information can be used to indicate a transmission layer number of a PUSCH transmission occasion corresponding to the first SRI / TPMI indication field, and a transmission layer number of a PUSCH transmission occasion corresponding to the second SRI / TPMI indication field.

[0256] In some embodiments, the second indication information can be used to indicate a transmission layer number of a PUSCH transmission occasion corresponding to the first SRI / TPMI indication field, and a transmission layer number of a PUSCH transmission occasion corresponding to the second SRI / TPMI indication field.

[0257] In some embodiments, the correspondence between the multiple PUSCH transmission occasions and the SRI fields or the TPMI fields is predefined.

[0258] In some embodiments, the correspondence between the multiple PUSCH transmission occasions and the SRI fields or the TPMI fields is indicated by an indication field indicated by a SRS resource set.

[0259] As a possible implementation, the correspondence between the multiple PUSCH transmission occasions and the SRI fields or the TPMI fields is as follows:

[0260] A PUSCH transmission occasion transmitted in a first direction corresponds to the first SRI field or the first TPMI field;

[0261] A PUSCH transmission occasion transmitted in a second direction corresponds to the second SRI field or the second TPMI field;

[0262] In some embodiments, the first direction is a direction corresponding to a first TCI state and / or a first TRP, and the second direction is a direction corresponding to a second TCI state and / or a second TRP.

[0263] As another possible implementation, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is:

[0264] The PUSCH transmission occasion transmitted in the first direction corresponds to the second SRI field or the second TPMI field;

[0265] The PUSCH transmission occasion transmitted in the second direction corresponds to the first SRI field or the first TPMI field;

[0266] The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0267] In some embodiments, the second indication information is an SRS resource set indication, the first code point included in the second indication information (SRS resource set indication) is used to indicate combination information of the number of transmission layers being {R1, R2}, wherein the PUSCH transmission occasion with the number of transmission layers being R1 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers being R2 is transmitted in the second direction;

[0268] The second code point included in the indication field of the SRS resource set indication is used to indicate combination information of the number of transmission layers being {R2, R1}, wherein the PUSCH transmission occasion with the number of transmission layers being R2 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers being R1 is transmitted in the second direction;

[0269] The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

[0270] In the embodiments of the present application, the first indication information and the second indication information can be the same indication information, or can be different indication information.

[0271] In the embodiments of the present application, the DMRS port corresponding to each PUSCH transmission occasion is determined by the terminal device.

[0272] In some embodiments, the terminal device can determine the DMRS port corresponding to each PUSCH transmission occasion based on a fixed rule.

[0273] In some embodiments, the terminal device can determine whether the DMRS port indicated by the first indication information belongs to the same CDM group of DMRS.

[0274] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, determining a first DMRS port corresponding to the first PUSCH transmission occasion and a second DMRS port corresponding to the second PUSCH transmission occasion, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, and the first DMRS port belongs to the same CDM group and the second DMRS port belongs to another CDM group.

[0275] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, determining a first DMRS port corresponding to the first PUSCH transmission occasion and a second DMRS port corresponding to the second PUSCH transmission occasion, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0276] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, determining a first DMRS port corresponding to the first PUSCH transmission occasion and a second DMRS port corresponding to the second PUSCH transmission occasion, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0277] In summary, by sending first indication information to a terminal device, the first indication information being used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP), second indication information is sent to the terminal device, the second indication information being used to indicate transmission rank (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs), the DMRS ports used for transmission can be flexibly configured, the transmission interference between the multi-antenna panels is effectively reduced, the reliability and robustness of transmission are effectively improved, and the system communication efficiency is improved.

[0278] Corresponding to the uplink communication method based on multi-panel simultaneous transmission provided in the above several embodiments, the application also provides an uplink communication device based on multi-panel simultaneous transmission. Since the uplink communication device based on multi-panel simultaneous transmission provided in the embodiments of the application corresponds to the method provided in the above several embodiments, the implementation of the uplink communication method based on multi-panel simultaneous transmission is also applicable to the uplink communication device based on multi-panel simultaneous transmission provided in the following embodiments, which will not be described in detail in the following embodiments.

[0279] Please refer to Figure 8 , Figures 2 to 5 The structure of an uplink communication device based on multi-panel simultaneous transmission provided in an embodiment of the application is shown in the figure.

[0280] As Figure 6 shown, the uplink communication device based on multi-panel simultaneous transmission 700 includes a transceiver unit 710 and a processing unit 720, wherein:

[0281] The transceiver unit 710 is configured to receive first indication information sent by a network device, the first indication information being used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP);

[0282] The transceiver unit 710 is also configured to receive second indication information sent by the network device, the second indication information being used to indicate transmission rank (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs);

[0283] The processing unit 720 is configured to determine a DMRS port corresponding to each of the PUSCH transmission occasions.

[0284] Optionally, the PUSCH transmission occasion corresponds to at least one of the following:

[0285] A code word;

[0286] A panel;

[0287] A sounding reference signal (SRS) resource set;

[0288] An SRS resource indication (SRI) indication field;

[0289] A transmission pre-coding matrix indication (TPMI) indication field;

[0290] A transmission reception point (TRP);

[0291] A TCI state used for indicating a beam.

[0292] Optionally, a number of transmission layers of the PUSCH transmission occasion corresponding to the first SRI indication field or the first TPMI indication field is R1, and a number of transmission layers of the PUSCH transmission occasion corresponding to the second SRI indication field or the second TPMI indication field is R2, and the second indication information is used to indicate the R1 and the R2.

[0293] Optionally, the second indication information is used to indicate combination information of the number of transmission layers R1 and R2.

[0294] Optionally, a correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is predefined; or the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is indicated by an indication field indicated by an SRS resource set.

[0295] Optionally, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is as follows:

[0296] A PUSCH transmission occasion transmitted in a first direction corresponds to the first SRI field or the first TPMI field;

[0297] A PUSCH transmission occasion transmitted in a second direction corresponds to the second SRI field or the second TPMI field;

[0298] The first direction is a direction corresponding to a first TCI state and / or a first TRP, and the second direction is a direction corresponding to a second TCI state and / or a second TRP.

[0299] Optionally, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is as follows:

[0300] The PUSCH transmission occasion transmitted in the first direction corresponds to the second SRI field or the second TPMI field.

[0301] The PUSCH transmission occasion transmitted in the second direction corresponds to the first SRI field or the first TPMI field.

[0302] The first direction is a direction corresponding to the first TCI state and / or the first TRP, and the second direction is a direction corresponding to the second TCI state and / or the second TRP.

[0303] Optionally, the indication field indicated by the SRS resource set includes a first code point used to indicate combination information of the number of transmission layers being {R1, R2}, wherein the PUSCH transmission occasion with the number of transmission layers being R1 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers being R2 is transmitted in the second direction.

[0304] The indication field indicated by the SRS resource set includes a second code point used to indicate combination information of the number of transmission layers being {R2, R1}, wherein the PUSCH transmission occasion with the number of transmission layers being R2 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers being R1 is transmitted in the second direction.

[0305] The first direction is a direction corresponding to the first TCI state and / or the first TRP, and the second direction is a direction corresponding to the second TCI state and / or the second TRP.

[0306] Optionally, the number of transmission layers of the PUSCH is at most 4.

[0307] Optionally, the processing unit 720 is specifically configured to:

[0308] In a case where each DMRS port indicated by the first indication information does not belong to the same CDM group, determine a first DMRS port corresponding to the first PUSCH transmission occasion and a second DMRS port corresponding to the second PUSCH transmission occasion, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, the first DMRS port belongs to the same CDM group, and the second DMRS port belongs to another CDM group.

[0309] Optionally, the processing unit 720 is specifically configured to:

[0310] In a case where the respective DMRS ports indicated by the first indication information belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0311] Optionally, the processing unit 720 is specifically configured to:

[0312] In a case where the respective DMRS ports indicated by the first indication information belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission occasion and the second DMRS port corresponding to the second PUSCH transmission occasion are determined, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0313] The uplink communication device based on multi-panel simultaneous transmission of the embodiment can receive first indication information transmitted by a network device, the first indication information being used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) space division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP), receive second indication information transmitted by the network device, the second indication information being used to indicate transmission layer (RANK) information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs), and determine DMRS ports corresponding to the respective PUSCH transmission occasions, which can flexibly configure DMRS ports used for transmission, effectively reduce transmission interference between multi-antenna panels, effectively improve transmission reliability and robustness, and improve system communication efficiency.

[0314] Please refer to Figures 2 to 5 , Figure 6 A structure schematic diagram of an uplink communication device based on multi-panel simultaneous transmission provided by the embodiment of the application is shown in the figure.

[0315] AsFigure 9 As shown, the uplink communication device 800 based on multi-panel simultaneous transmission comprises a transceiver 810, wherein:

[0316] The transceiver 810 is configured to send first indication information to a terminal device, the first indication information being used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP).

[0317] The transceiver 810 is further configured to send second indication information to the terminal device, the second indication information being used to indicate rank information corresponding to a plurality of PUSCH transmission occasions of the PUSCH respectively, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission and reception points (TRPs).

[0318] Optionally, the PUSCH transmission occasion has a corresponding relationship with at least one of the following:

[0319] A code word;

[0320] A panel;

[0321] A sounding reference signal (SRS) resource set;

[0322] An SRS resource indication (SRI) indication field;

[0323] A transmission pre-coding matrix indication (TPMI) indication field;

[0324] A transmission and reception point (TRP);

[0325] A TCI state used to indicate a beam.

[0326] Optionally, a transmission rank of a PUSCH transmission occasion corresponding to a first SRI indication field or a first TPMI indication field is R1, a transmission rank of a PUSCH transmission occasion corresponding to a second SRI indication field or a second TPMI indication field is R2, and the second indication information is used to indicate the R1 and the R2.

[0327] Optionally, the second indication information is used to indicate combination information of the transmission ranks R1 and R2.

[0328] Optionally, a corresponding relationship between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is predefined; or the corresponding relationship between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is indicated by an indication field indicated by an SRS resource set.

[0329] Optionally, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is that:

[0330] The PUSCH transmission occasion transmitted in the first direction corresponds to the first SRI field or the first TPMI field;

[0331] The PUSCH transmission occasion transmitted in the second direction corresponds to the second SRI field or the second TPMI field;

[0332] The first direction is a direction corresponding to the first TCI state and / or the first TRP, and the second direction is a direction corresponding to the second TCI state and / or the second TRP.

[0333] Optionally, the correspondence between the plurality of PUSCH transmission occasions and the SRI field or the TPMI field is that:

[0334] The PUSCH transmission occasion transmitted in the first direction corresponds to the second SRI field or the second TPMI field;

[0335] The PUSCH transmission occasion transmitted in the second direction corresponds to the first SRI field or the first TPMI field;

[0336] The first direction is a direction corresponding to the first TCI state and / or the first TRP, and the second direction is a direction corresponding to the second TCI state and / or the second TRP.

[0337] Optionally, the SRS resource set indication indication field includes a first code point for indicating combination information that the number of transmission layers is {R1, R2}, wherein the PUSCH transmission occasion with the number of transmission layers R1 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers R2 is transmitted in the second direction;

[0338] The SRS resource set indication indication field includes a second code point for indicating combination information that the number of transmission layers is {R2, R1}, wherein the PUSCH transmission occasion with the number of transmission layers R2 is transmitted in the first direction, and the PUSCH transmission occasion with the number of transmission layers R1 is transmitted in the second direction;

[0339] The first direction is a direction corresponding to the first TCI state and / or the first TRP, and the second direction is a direction corresponding to the second TCI state and / or the second TRP.

[0340] Optionally, the number of transmission layers of the PUSCH is at most 4.

[0341] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, the first PUSCH transmission occasion corresponds to the first DMRS port, and the second PUSCH transmission occasion corresponds to the second DMRS port, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, the first DMRS port belongs to the same CDM group, and the second DMRS port belongs to another CDM group.

[0342] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, the first PUSCH transmission occasion corresponds to the first DMRS port, and the second PUSCH transmission occasion corresponds to the second DMRS port, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0343] Optionally, in the case that each DMRS port indicated by the first indication information does not belong to the same CDM group, the first PUSCH transmission occasion corresponds to the first DMRS port, and the second PUSCH transmission occasion corresponds to the second DMRS port, wherein the number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission occasion, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission occasion, and the first DMRS port is the adjacent DMRS port after arranging the numbers of the DMRS ports indicated by the first indication information in a first order, and the second DMRS port is the remaining DMRS port.

[0344] The uplink communication device based on multi-panel simultaneous transmission of the embodiment can send first indication information to the terminal device, the first indication information being used to indicate total demodulation reference signal (DMRS) ports for physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission is based on single downlink control information (DCI) spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission (STxMP), second indication information is sent to the terminal device, the second indication information being used to indicate transmission rank combination information corresponding to each of a plurality of PUSCH transmission occasions of the PUSCH, wherein the plurality of PUSCH transmission occasions are transmitted in directions corresponding to a plurality of transmission configuration indication (TCI) states and / or transmission reception points (TRPs), and the DMRS ports corresponding to each of the PUSCH transmission occasions are determined by the terminal device based on a first rule, so that the DMRS ports used for transmission can be flexibly configured, transmission interference between multi-antenna panels is effectively reduced, transmission reliability and robustness are effectively improved, and system communication efficiency is improved.

[0345] To achieve the above-mentioned embodiments, the embodiments of the present application further propose a communication device, comprising: a processor and a memory, the memory storing a computer program, and the processor executing the computer program stored in the memory to enable the device to perform Figure 9 The method shown in the embodiments.

[0346] To achieve the above-mentioned embodiments, the embodiments of the present application further propose a communication device, comprising: a processor and a memory, the memory storing a computer program, and the processor executing the computer program stored in the memory to enable the device to perform Figures 7-8 The method shown in the embodiments.

[0347] To achieve the above-mentioned embodiments, the embodiments of the present application further propose a communication device, comprising: a processor and an interface circuit, the interface circuit being used to receive code instructions and transmit them to the processor, and the processor being used to run the code instructions to perform Figure 10 The method shown in the embodiments.

[0348] To achieve the above-mentioned embodiments, the embodiments of the present application further propose a communication device, comprising: a processor and an interface circuit, the interface circuit being used to receive code instructions and transmit them to the processor, and the processor being used to run the code instructions to perform Figure 10 The method shown in the embodiments.

[0349] Please refer to Figures 2 to 8 , Figure 9is a structural schematic diagram of another uplink communication apparatus based on multi-panel simultaneous transmission provided by the embodiments of the present disclosure. The uplink communication apparatus 900 based on multi-panel simultaneous transmission can be a network device, a terminal device, a chip, a chip system, or a processor supporting the network device to implement the above method, or a chip, a chip system, or a processor supporting the terminal device to implement the above method. The apparatus can be used to implement the method described in the above method embodiments, and specific implementation can be referred to the description in the above method embodiments.

[0350] The uplink communication apparatus 900 based on multi-panel simultaneous transmission can include one or more processors 901. The processor 901 can be a general-purpose processor or a special-purpose processor, etc. For example, it can be a baseband processor or a central processor. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control the uplink communication apparatus based on multi-panel simultaneous transmission (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 data of the computer program.

[0351] Optionally, the uplink communication apparatus 900 based on multi-panel simultaneous transmission can further include one or more memories 902, which can have computer programs 903 stored thereon. The processor 901 executes the computer programs 903 to enable the uplink communication apparatus 900 based on multi-panel simultaneous transmission to perform the methods described in the above method embodiments. The computer programs 903 can be fixed in the processor 901, and in this case, the processor 901 can be implemented by hardware.

[0352] Optionally, the memory 902 can also store data. The uplink communication apparatus 900 based on multi-panel simultaneous transmission and the memory 902 can be separately arranged or integrated together.

[0353] Optionally, the uplink communication apparatus 900 based on multi-panel simultaneous transmission can further include a transceiver 905, an antenna 906. The transceiver 905 can be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc., and is used to realize the transceiving function. The transceiver 905 can include a receiver and a transmitter. The receiver can be referred to as a receiver or a receiving circuit, etc., and is used to realize the receiving function. The transmitter can be referred to as a transmitter or a transmitting circuit, etc., and is used to realize the transmitting function.

[0354] Optionally, the uplink communication apparatus 900 based on multi-panel simultaneous transmission can further include one or more interface circuits 907. The interface circuit 907 is used to receive code instructions and transmit them to the processor 901. The processor 901 runs the code instructions to enable the uplink communication apparatus 900 based on multi-panel simultaneous transmission to perform the methods described in the above method embodiments.

[0355] In an implementation, the processor 901 can include a transceiver for implementing the receiving and transmitting functions. For example, the transceiver can be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions can be separate or integrated together. The transceiver circuit, interface, or interface circuit described above can be used for reading and writing of code / data, or the transceiver circuit, interface, or interface circuit described above can be used for transmission or transfer of signals.

[0356] In an implementation, the uplink communication apparatus based on multi-panel simultaneous transmission 900 can include a circuit, which can implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and the transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, an RFIC, a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and the transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0357] The uplink communication apparatus based on multi-panel simultaneous transmission described in the foregoing embodiments can be a network device or a terminal device, but the scope of the uplink communication apparatus based on multi-panel simultaneous transmission described in the present disclosure is not limited thereto, and the structure of the uplink communication apparatus based on multi-panel simultaneous transmission can not be limited by Figures 7-8 The uplink communication apparatus based on multi-panel simultaneous transmission can be a standalone device or can be part of a larger device. For example, the uplink communication apparatus based on multi-panel simultaneous transmission can be:

[0358] (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem;

[0359] (2) a set of one or more ICs, optionally, the set of ICs can also include storage components for storing data, computer programs;

[0360] (3) ASIC, such as a modem (Modem);

[0361] (4) a module that can be embedded within other devices;

[0362] (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a car device, a network device, a cloud device, an artificial intelligence device, and the like;

[0363] (6) and the like.

[0364] For the case that the uplink communication device based on multi-panel simultaneous transmission can be a chip or a chip system, refer to the structural schematic diagram of the chip shown in Figure 9 The chip shown in comprises a processor 1001 and an interface 1002. Among them, the number of processors 1001 can be one or more, and the number of interfaces 1002 can be multiple. ​ For the case that the chip is used to realize the function of the terminal device in the embodiments of the present disclosure:

[0365] The interface 1002 is used for code instructions and transmission to the processor;

[0366] The processor 1001 is used to run the code instructions to execute the method as

[0367] The processor 1001 is used to run the code instructions to execute the method as ​

[0368] For the case that the chip is used to realize the function of the network device in the embodiments of the present disclosure:

[0369] The interface 1002 is used for code instructions and transmission to the processor;

[0370] The processor 1001 is used to run the code instructions to execute the method as ​

[0371] Optionally, the chip further comprises a memory 1003, and the memory 1003 is used to store necessary computer programs and data.

[0372] Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure can be implemented by electronic hardware, computer software, or a combination of the two. Whether the function is implemented by hardware or software depends on the specific application and design requirements of the whole system. Those skilled in the art can use various methods to implement the functions for each specific application, but such implementation should not be understood as beyond the scope of protection of the embodiments of the present disclosure.

[0373] ​​The embodiments of the present disclosure also provide a communication system, which comprises the above-mentioned ​ The embodiments of the present disclosure also provide a communication system, which comprises the above-mentioned ​ The embodiments of the present disclosure also provide a communication system, which comprises the above-mentioned

[0374] The embodiments of the present disclosure also provide a readable storage medium, which stores instructions, and the instructions are executed by a computer to realize the functions of any of the above-mentioned method embodiments.

[0375] The embodiments of the present disclosure also provide a computer program product, which is executed by a computer to realize the functions of any of the above-mentioned method embodiments.

[0376] In the above-mentioned embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer programs 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 programs can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as high-density digital video disc (digital video disc, DVD)) or semiconductor media (such as solid state disk (solid state disk, SSD)) and the like.

[0377] Those skilled in the art can understand that the first, second and other various numbers involved in the present disclosure are only for the convenience of differentiation in the description, and do not limit the scope of the embodiments of the present disclosure, nor represent the order.

[0378] At least one of the present disclosure can also be described as one or more, multiple can be two, three, four or more, the present disclosure does not make limited. In the embodiment 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" and so on. The technical features described by "first", "second", "third", "A", "B", "C" and "D" have no order or size order.

[0379] The correspondence relationship shown in each table in the present disclosure can be configured or predefined. The values of the information in each table are only examples, and other values can be configured, and the present disclosure does not limit. When configuring the correspondence relationship between the information and each parameter, it is not necessarily required to configure all the correspondence relationships shown in each table. For example, in the table in the present disclosure, the correspondence relationship shown in some rows can also not be configured. For another example, the above table can be appropriately deformed and adjusted, for example, split, merged, etc. The parameter name shown in the title of each table in the above can also use other names understandable by the communication device, and the parameter value or representation method can also use other values or representation methods understandable by the communication device. Each table in the above can also use other data structures when implemented, for example, array, queue, container, stack, linear table, pointer, linked list, tree, graph, structure, class, heap, hash table or hash table, etc.

[0380] The predefinition in the present disclosure can be understood as definition, predefinition, storage, prestorage, prenegotiation, preconfiguration, solidification or pre-burning.

[0381] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0382] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0383] It should be understood that the steps shown above can be reordered, added or deleted using various forms of flow. For example, each step described in the embodiments of the present disclosure can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure does not limit here.

[0384] The foregoing detailed description has set forth various embodiments of the application via specific examples. However, it is noted that various modifications, combinations, sub-combinations, and equivalents can be employed, and will be apparent to one skilled in the art in view of this disclosure. Accordingly, the particular description set forth is not intended to be limiting to the scope of the application, as claimed.

Claims

1. An uplink communication method based on simultaneous transmission across multiple panels, characterized in that, The method is executed by a terminal device, and the method includes: The network device receives a first indication message, which is used to indicate the total demodulation reference signal DMRS port for Physical Uplink Shared Channel (PUSCH) transmission, wherein the PUSCH transmission is based on Spatial Division Multiplexing (SDM) multi-antenna panel simultaneous transmission of STxMP based on Single Downlink Control Information (DCI). The network device receives a second indication message, which is used to indicate the transmission layer number RANK information corresponding to the multiple PUSCH transmission opportunities of the PUSCH, wherein the multiple PUSCH transmission opportunities are transmitted in the direction corresponding to the multiple transmission configuration indication TCI status and / or transmit / receive point TRP. Determine the DMRS port corresponding to each PUSCH transmission timing.

2. The method according to claim 1, characterized in that, The PUSCH transmission timing corresponds to at least one of the following: Typing; panel; Detection Reference Signal (SRS) resource set; SRS Resource Indicator (SRI) Indicator Field; Transmission Precoding Matrix Indicator (TPMI) field; Transmitter / Receiver Point (TRP); Used to indicate the TCI status of the beam.

3. The method according to claim 2, characterized in that, The transmission layer number of the PUSCH transmission timing corresponding to the first SRI indication field or the first TPMI indication field is R1, and the transmission layer number of the PUSCH transmission timing corresponding to the second SRI indication field or the second TPMI indication field is R2. The second indication information is used to indicate R1 and R2.

4. The method according to claim 3, characterized in that, The second indication information is used to indicate the combination information of the transmission layer numbers R1 and R2.

5. The method according to claim 3, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or TPMI indication field is predefined; or, the correspondence between the multiple PUSCH transmission timings and the SRI indication field or TPMI indication field is indicated by the indication field indicated by the SRS resource set. The SRI indication field includes the first SRI indication field and the second SRI indication field, and the TPMI indication field includes the first TPMI indication field and the second TPMI indication field.

6. The method according to claim 5, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or the TPMI indication field is as follows: The timing of PUSCH transmission in the first direction corresponds to the first SRI indication field or the first TPMI indication field; The timing of PUSCH transmission in the second direction corresponds to the second SRI indication field or the second TPMI indication field; Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

7. The method according to claim 5, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or the TPMI indication field is as follows: The timing of PUSCH transmission in the first direction corresponds to the second SRI indication field or the second TPMI indication field; The timing of PUSCH transmission in the second direction corresponds to the first SRI indication field or the first TPMI indication field. Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

8. The method according to any one of claims 3-5, characterized in that, The indication field of the SRS resource set indication includes a first code point used to indicate the combination information of the transmission layer number {R1, R2}, wherein the PUSCH transmission timing of the transmission layer number R1 is transmitted in the first direction, and the PUSCH transmission timing of the transmission layer number R2 is transmitted in the second direction. The indication field of the SRS resource set indication includes a second code point used to indicate the combination information of the transmission layer number {R2, R1}, wherein the PUSCH transmission timing of the transmission layer number R2 is transmitted in the first direction, and the PUSCH transmission timing of the transmission layer number R1 is transmitted in the second direction. The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

9. The method according to claim 1, characterized in that, The maximum number of transport layers for the PUSCH is 4.

10. The method according to claim 9, characterized in that, Determining the DMRS port corresponding to each PUSCH transmission timing includes: If the DMRS ports indicated by the first indication information do not belong to the same CDM group, determine the first DMRS port corresponding to the first PUSCH transmission timing and the second DMRS port corresponding to the second PUSCH transmission timing. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission timing, and the first DMRS port belongs to the same CDM group, while the second DMRS port belongs to another CDM group.

11. The method according to claim 9, characterized in that, Determining the DMRS port corresponding to each PUSCH transmission timing includes: When the DMRS ports indicated by the first indication information do not belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission timing and the second DMRS port corresponding to the second PUSCH transmission timing are determined. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, and the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH. The first DMRS port is the DMRS port number indicated by the first indication information arranged in a first order and then the adjacent DMRS ports are sorted. The second DMRS port is the remaining DMRS port.

12. The method according to claim 9, characterized in that, Determining the DMRS port corresponding to each PUSCH transmission timing includes: When the DMRS ports indicated by the first indication information belong to the same CDM group, the first DMRS port corresponding to the first PUSCH transmission timing and the second DMRS port corresponding to the second PUSCH transmission timing are determined. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, and the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission timing. The first DMRS port is the DMRS port number indicated by the first indication information arranged in a first order and then the adjacent DMRS ports are sorted. The second DMRS port is the remaining DMRS port.

13. An uplink communication method based on simultaneous transmission across multiple panels, characterized in that, The method is performed by a network device, and the method includes: Send a first indication message to the terminal device. The first indication message is used to indicate the total demodulation reference signal DMRS port for Physical Uplink Shared Channel (PUSCH) transmission, wherein the PUSCH transmission is based on Spatial Division Multiplexing (SDM) multi-antenna panel simultaneous transmission of STxMP based on Single Downlink Control Information (DCI). Send a second indication message to the terminal device. The second indication message is used to indicate the transmission layer number RANK information corresponding to the multiple PUSCH transmission opportunities of the PUSCH, wherein the multiple PUSCH transmission opportunities are transmitted in the direction corresponding to the multiple transmission configuration indication TCI status and / or transmit / receive point TRP.

14. The method according to claim 13, characterized in that, The PUSCH transmission timing corresponds to at least one of the following: Typing; panel; Detection Reference Signal (SRS) resource set; SRS Resource Indicator (SRI) Indicator Field; Transmission Precoding Matrix Indicator (TPMI) field; Transmitter / Receiver Point (TRP); Used to indicate the TCI status of the beam.

15. The method according to claim 14, characterized in that, The transmission layer number of the PUSCH transmission timing corresponding to the first SRI indication field or the first TPMI indication field is R1, and the transmission layer number of the PUSCH transmission timing corresponding to the second SRI indication field or the second TPMI indication field is R2. The second indication information is used to indicate R1 and R2.

16. The method according to claim 15, characterized in that, The second indication information is used to indicate the combination information of the transmission layer numbers R1 and R2.

17. The method according to claim 15, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or TPMI indication field is predefined; or, the correspondence between the multiple PUSCH transmission timings and the SRI indication field or TPMI indication field is indicated by the indication field indicated by the SRS resource set. The SRI indication field includes the first SRI indication field and the second SRI indication field, and the TPMI indication field includes the first TPMI indication field and the second TPMI indication field.

18. The method according to claim 17, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or the TPMI indication field is as follows: The timing of PUSCH transmission in the first direction corresponds to the first SRI indication field or the first TPMI indication field; The timing of PUSCH transmission in the second direction corresponds to the second SRI indication field or the second TPMI indication field; Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

19. The method according to claim 17, characterized in that, The correspondence between the multiple PUSCH transmission timings and the SRI indication field or the TPMI indication field is as follows: The timing of PUSCH transmission in the first direction corresponds to the second SRI indication field or the second TPMI indication field; The timing of PUSCH transmission in the second direction corresponds to the first SRI indication field or the first TPMI indication field. Wherein, the first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

20. The method according to any one of claims 15-17, characterized in that, The SRS resource set indication field includes a first code point used to indicate the combination information of the transmission layer number {R1, R2}, wherein the PUSCH transmission timing of the transmission layer number R1 is transmitted in the first direction, and the PUSCH transmission timing of the transmission layer number R2 is transmitted in the second direction. The second code point included in the SRS resource set indication field is used to indicate the combination information of the transmission layer number {R2, R1}, wherein the PUSCH transmission timing of the transmission layer number R2 is transmitted in the first direction, and the PUSCH transmission timing of the transmission layer number R1 is transmitted in the second direction. The first direction is the direction corresponding to the first TCI state and / or the first TRP, and the second direction is the direction corresponding to the second TCI state and / or the second TRP.

21. The method according to claim 13, characterized in that, The maximum number of transport layers for the PUSCH is 4.

22. The method according to claim 21, characterized in that, When the DMRS ports indicated by the first indication information do not belong to the same CDM group, the first PUSCH transmission timing corresponds to the first DMRS port, and the second PUSCH transmission timing corresponds to the second DMRS port. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, and the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission timing. Furthermore, the first DMRS port belongs to the same CDM group, and the second DMRS port belongs to another CDM group.

23. The method according to claim 21, characterized in that, When the DMRS ports indicated by the first indication information do not belong to the same CDM group, the first PUSCH transmission timing corresponds to the first DMRS port, and the second PUSCH transmission timing corresponds to the second DMRS port. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, and the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH. The first DMRS port is the DMRS ports whose numbers are arranged in a first order and then the adjacent DMRS ports are sorted. The second DMRS port is the remaining DMRS port.

24. The method according to claim 21, characterized in that, When the DMRS ports indicated by the first indication information belong to the same CDM group, the first PUSCH transmission timing corresponds to the first DMRS port, and the second PUSCH transmission timing corresponds to the second DMRS port. The number of ports of the first DMRS port is equal to the number of transmission layers corresponding to the first PUSCH transmission timing, and the number of ports of the second DMRS port is equal to the number of transmission layers corresponding to the second PUSCH transmission timing. The first DMRS port is the DMRS ports whose numbers are arranged in a first order and then the adjacent DMRS ports are sorted. The second DMRS port is the remaining DMRS port.

25. An uplink communication device based on simultaneous transmission across multiple panels, characterized in that, The device is used for execution on a terminal device, and the device includes: The transceiver unit is used to receive first indication information sent by the network device. The first indication information is used to indicate the total demodulation reference signal DMRS port for the Physical Uplink Shared Channel (PUSCH) transmission, wherein the PUSCH transmission is based on the spatial division multiplexing (SDM) multi-antenna panel simultaneous transmission of STxMP based on a single downlink control information (DCI). The transceiver unit is further configured to receive second indication information sent by the network device. The second indication information is used to indicate the transmission layer number RANK information corresponding to the multiple PUSCH transmission opportunities of the PUSCH, wherein the multiple PUSCH transmission opportunities are transmitted in the direction corresponding to the multiple transmission configuration indication TCI status and / or transmit / receive point TRP. The processing unit is used to determine the DMRS port corresponding to each PUSCH transmission timing.

26. An uplink communication device based on simultaneous transmission across multiple panels, characterized in that, The device is used in a network device, and the device includes: The transceiver unit is used to send first indication information to the terminal device. The first indication information is used to indicate the total demodulation reference signal DMRS port for the Physical Uplink Shared Channel (PUSCH) transmission, wherein the PUSCH transmission is based on the simultaneous transmission of STxMP by a spatially divided multiplexing (SDM) multi-antenna panel using a single downlink control information (DCI). The transceiver unit is further configured to send second indication information to the terminal device. The second indication information is used to indicate the transmission layer number RANK information corresponding to the multiple PUSCH transmission opportunities of the PUSCH, wherein the multiple PUSCH transmission opportunities are transmitted in the direction corresponding to the multiple transmission configuration indication TCI status and / or transmit / receive point TRP.

27. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 1 to 12, or to perform the method as described in any one of claims 13 to 24.

28. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 1 to 12, or to perform the method as described in any one of claims 13 to 24.

29. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 12 to be implemented, or cause the method of any one of claims 13 to 24 to be implemented.

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