Downlink control information indication method, uplink channel transmission rank determination method and apparatus

Abstract

The present application discloses a downlink control information indication method, an uplink channel transmission rank determination method and an apparatus, the downlink control information indication method including: a terminal receiving DCI for scheduling a PUSCH; and the terminal determining a bit length of a target field of the DCI and effective bits in the target field based on maximum transmission rank information of the PUSCH, the target field including at least one of at least one SRI field, at least one TPMI field and a PTRS-DMRS field. The uplink channel transmission rank determination method includes a terminal determining maximum transmission rank information of a PUSCH, the maximum transmission rank information of the PUSCH including maximum transmission rank information of a PUSCH associated only with a single SRS resource set configured for the terminal and maximum transmission rank information of a PUSCH associated simultaneously with multiple SRS resource sets configured for the terminal.

Description

Technical Field

[0001] (Cross-reference to Related Applications) This application claims the priority of Chinese Patent Application No. 202110893416.0 filed in China on August 4, 2021, and the entire content of the application is incorporated herein by reference.

[0002] This application belongs to the field of wireless communication technology, and specifically relates to a downlink control information indication method, an uplink channel transmission rank determination method, and an apparatus.

Background Art

[0003] In order to improve the reliability of uplink data transmission, Rel-17 introduces a physical uplink shared channel (PUSCH) transmission method for multiple transmit receive points (TRPs), that is, different repetitions of one PUSCH are sent to multiple TRPs by adopting different beams, so as to counter the influence caused by link blocking beam blocking.

[0004] Currently, in a multi-TRP scenario, it has been determined to configure two sets of channel sounding reference signal (Sounding Reference Signal, SRS) resource sets for a terminal, each corresponding to two TRPs. The downlink control information (Downlink Control Information, DCI) for scheduling the PUSCH includes two SRS resource indicator (SRS resource indicator, SRI) fields and two transmitted precoding matrix indicator (Transmitted Precoding Matrix Indicator, TPMI) fields, which are used to indicate two sets of parameters respectively and are used for PUSCH transmission. Here, the two SRI fields correspondingly indicate the SRS resources in the two SRS resource sets, and each SRS resource corresponds to one beam. In this way, the PUSCH can simultaneously adopt two-beam transmission to improve the reliability of data transmission. However, there is still no clear established theory on how to decode the DCI for scheduling the PUSCH in the above multi-TRP scenario.

[0005] In addition, to ensure that the receiving end can integrate different repeated transmissions of PUSCH to improve the reliability of data transmission, it is required that all the repetitions sent to multiple TRPs correspond to the same transmission rank number (or the number of transmission layers). Note that a new field is also introduced to dynamically indicate the switching between single-TRP transmission and multi-TRP transmission. Currently, the maximum transmission rank information is configured by Radio Resource Control (RRC) signaling, and once configured, the maximum transmission ranks of PUSCH sent to two TRPs are both restricted by this configuration. If the capabilities of the two TRPs are different, for example, one TRP supports the transmission of four-layer data by the terminal, while the other TRP only supports the transmission of two-layer data, the network side selects to configure the maximum transmission rank number to be two layers. In this way, even if the downlink control information (DCI) instructs the switching to single-TRP transmission, for example, the switching to the TRP that supports the transmission of four-layer data, it is still impossible to achieve scheduling with a maximum transmission rank greater than two layers at this time. Therefore, the prior art limits the throughput performance during single-TRP transmission.

Summary of the Invention

Problems to be Solved by the Invention

[0006] Embodiments of the present application can solve the problem of how to decode DCI for scheduling PUSCH in a multi-TRP scenario, or can solve the problem that the throughput performance during single-TRP transmission in a multi-TRP scenario is restricted, and provide a downlink control information indication method, an uplink channel transmission rank determination method, and an apparatus.

Means for Solving the Problems

[0007] According to a first aspect, a downlink control information indication method is provided, and this method includes: The terminal receives DCI that schedules PUSCH, and the terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, where the target field includes at least one SRI field, and at least one TPMI field, and includes at least one of a TRS-DMRS field.

[0008] According to a second aspect, an uplink channel transmission rank determination method is provided. The method includes the terminal determines the maximum transmission rank information of the PUSCH, where the maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH related to only a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to a plurality of SRS resource sets configured for the terminal simultaneously.

[0009] According to a third aspect, a downlink control information decoding apparatus is provided. The apparatus includes a first receiving module for receiving DCI that schedules PUSCH, and a first determining module for determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, where the target field includes at least one SRI field, and at least one TPMI field, and includes at least one of a PTRS-DMRS field.

[0010] According to a fourth aspect, an uplink channel transmission rank determination apparatus is provided. The apparatus includes It includes a determination module for determining the maximum transmission rank information of PUSCH, and the maximum transmission rank information of the PUSCH is the maximum transmission rank information of PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of PUSCH related simultaneously to a plurality of SRS resource sets configured for the terminal.

[0011] According to a fifth aspect, a terminal is provided, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method according to the first aspect or the second aspect are realized.

[0012] According to a sixth aspect, a terminal is provided, which includes a processor and a communication interface. Here, the communication interface is used to receive DCI for scheduling PUSCH, and the processor is further used to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. The target field includes at least one SRI field, and at least one TPMI field, and at least one of a PTRS-DMRS field.

[0013] According to a seventh aspect, a terminal is provided, which includes a processor and a communication interface. Here, the processor is used to determine the maximum transmission rank information of PUSCH, and the maximum transmission rank information of the PUSCH is the maximum transmission rank information of PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of PUSCH related simultaneously to a plurality of SRS resource sets configured for the terminal.

[0014] According to an eighth aspect, a readable storage medium is provided, in which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the method described in the first aspect are realized, or the steps of the method described in the second aspect are realized.

[0015] According to a ninth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instructions to realize the steps of the method described in the first aspect, or realize the steps of the method described in the second aspect.

[0016] According to a tenth aspect, a computer program / program product is provided, the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to realize the steps of the method described in the first aspect or the second aspect.

Advantages of the Invention

[0017] In the embodiments of the present application, it is clarified that the terminal determines the bit length of the target field of the DCI for scheduling PUSCH and the valid bits in the target field based on the maximum transmission rank information of PUSCH, so that the terminal can correctly decode the target field of the DCI, thereby performing correct PUSCH transmission.

[0018] Or, in the embodiments of the present application, in a multi-TRP scenario, by configuring different maximum transmission ranks for different TRPs, when switching to single-TRP transmission, it is ensured that the terminal can transmit a larger number of layers based on the current TRP configuration and obtain relatively good throughput performance.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0020] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the present application shall fall within the protection scope of the present application.

[0021] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not for describing a specific order or sequence. It should be understood that terms used in this way are interchangeable when appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects. For example, the first object may be one or a plurality. In addition, "and / or" in the description and claims represents at least one of the connected objects, and the character " / " generally represents that the related objects before and after are in an "or" relationship.

[0022] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be applied to other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of this application are always used interchangeably, and the described technology may be used in the systems and radio technologies mentioned above, or in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes and uses NR terms in most of the following descriptions, but these technologies may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0023] FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Here, the terminal 11 may also be referred to as a terminal device or a user equipment (UE). The terminal 11 may be a mobile phone, a tablet personal computer, a laptop computer (or called a notebook computer), a personal digital assistant (PDA), a palm-top computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home (home devices having a wireless communication function, such as a refrigerator, a TV, a washing machine, or furniture), etc. The wearable device may include a smart watch, a smart bracelet, smart earphones, smart glasses, smart accessories (such as a smart bracelet, a smart hand chain, a smart ring, a smart necklace, a smart ankle bracelet, a smart anklet, etc.), a smart band, smart clothing, a game console, etc. It should be noted that the specific type of the terminal 11 in the embodiments of the present application is not limited.The network-side device 12 may be a base station or a core network. Here, the base station may be referred to as Node B, evolved Node B, access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), B node, Evolved Node B (eNB), home B node, home evolved B node, Wireless Local Area Network (WLAN) access point, WiFi node, Transmitting Receiving Point (TRP), or any other appropriate term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. For the sake of explanation, only the base station in the NR system in the embodiments of this application is taken as an example, but the specific type of the base station is not limited.

[0024] Hereinafter, with reference to the drawings, several embodiments and their application scenarios will be used to elaborate on the downlink control information indication method, uplink channel transmission rank determination method, and apparatus according to the embodiments of this application.

[0025] First, the communication terms related to this application will be described below.

[0026] 1. PUSCH transmission mode based on the codebook: The network side configures an SRS resource set for use in codebook transmission for a User Equipment (UE, also referred to as a terminal). Each resource set includes at least one SRS resource. The UE transmits SRS based on at least one configured SRS resource. The network side receives the SRS to obtain the uplink channel, and based on this, determines the beam, precoding matrix, modulation and coding scheme (MCS), etc. for the UE uplink data bearer channel PUSCH transmission, and notifies the UE via Downlink Control Information (DCI).

[0027] The UE receives DCI for scheduling the PUSCH. The TPMI field in the DCI selects one precoding matrix for PUSCH transmission scheduled from one predefined codebook, and the indication is as shown in Table 1, for example. The UE precodes the uplink data based on the indicated TPMI and then maps it to the PUSCH resource for transmission.

[0028]

Table 1

Table 2

[0029] 2. PUSCH Transmission Mode Based on Non-Codebook The network side configures an SRS resource set for the UE to be used for non-codebook transmission, and each resource set includes at least one SRS resource. First, the UE detects the NZP CSI-RS transmitted by the network side in the non-zero power channel state information reference signal (NZP CSI-RS) resource configured by the network side to obtain the downlink channel state information. According to the channel reciprocity, this downlink channel information may be approximately equivalent to the uplink channel information. The UE calculates a candidate precoding matrix for uplink transmission based on the uplink channel information, precodes and transmits the SRS, and the network side further determines the precoding matrix used for PUSCH transmission based on the measured precoded SRS and notifies the UE via the DCI for scheduling the PUSCH.

[0030] The SRI field of the DCI selects a subset of one SRS resource index, i.e., an SRI group, from a predefined SRI index table to notify the UE of the precoding matrix adopted for the precoding of the PUSCH, and the indication is as shown in Table 2, for example.

[0031]

Table 3

[0032] 3. Parameter Indication for Multi-TRP PUSCH Transmission Currently, in the multi-TRP scenario, it has been determined to configure two SRS resource sets corresponding to two TRPs respectively for the terminal. The DCI for scheduling PUSCH includes two SRI fields and two TPMI fields, which are used to indicate two sets of parameters respectively and are used for PUSCH transmission. Here, the two SRI fields correspondingly indicate the SRS resources in the two SRS resource sets, and each SRS resource corresponds to one beam. In this way, PUSCH can simultaneously adopt two-beam transmission, improving the reliability of data transmission.

[0033] At the same time, to improve the flexibility of multi-TRP transmission, one indication field for indicating which one of the current two TRPs or which two TRPs are the target TRPs for PUSCH transmission has been introduced into the DCI. For specific indications, please refer to Figure 2.

[0034] (1) When the indication field takes "00": Only SRI field 1 and TPMI field 1 are used, and SRI field 1 corresponds to SRS resource set 1, that is, the two repetitions (repetition 1 and repetition 2) are all transmitted to TRP1.

[0035] (2) When the indication field takes "01": Only SRI field 1 and TPMI field 1 are used, and SRI field 1 corresponds to SRS resource set 2, that is, the two repetitions (repetition 1 and repetition 2) are all transmitted to TRP2.

[0036] (3) When the indication field takes "10": SRI field 1 and TPMI field 1 correspond to SRS resource set 1, and SRI field 2 and TPMI field 2 correspond to SRS resource set 2, that is, repetition 1 is transmitted to TRP1 and repetition 2 is transmitted to TRP2.

[0037] As can be seen from the above content, when TRP1 is the target TRP for PUSCH transmission, the SRI field 1 and the TPMI field 1 are used to indicate the information of the PUSCH related to TRP1. When TRP2 is the target TRP for PUSCH transmission, the SRI field 1 and the TPMI field 1 are also used to indicate the information of the PUSCH related to TRP2. When using the SRI field 1 and the TPMI field 1 to indicate the information of the PUSCH related to TRP2, how the terminal reads the SRI field 1 and the TPMI field 1 is an issue that awaits an urgent solution.

[0038] Referring to FIG. 3, the embodiment of the present application provides a downlink control information indication method, including the following.

[0039] Step 31: The terminal receives DCI for scheduling PUSCH. Step 32: The terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. The target field includes at least one SRI field, at least one TPMI field, and at least one of a Phase-tracking reference signal-Demodulation Reference Signal (PTRS-DMRS) field.

[0040] In the embodiment of the present application, it is clarified that the terminal determines the bit length of the target field of the DCI for scheduling PUSCH and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, so that the terminal can correctly decode the target field of the DCI, thereby performing correct PUSCH transmission.

[0041] 1. The SRS resource set used for codebook transmission In some embodiments of the present application, optionally, the DCI includes N TPMI fields, and the N TPMI fields are in one-to-one correspondence with SRS resource sets used for N codebook transmissions corresponding to the terminal respectively, where N is an integer greater than or equal to 2. The terminal determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes the terminal determining the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0042] For example, in some embodiments of the present application, the DCI includes two TPMI fields, and the two TPMI fields are in one-to-one correspondence with SRS resource sets used for two codebook transmissions configured for the terminal respectively. The terminal determines the bit length of the two TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0043] 1) Method for determining the bit length of the TPMI field Optionally, the bit length of the first TPMI field associated with the first SRS resource set is determined based on both the maximum SRS port number of the first SRS resource set and the first transmission rank information, where the first transmission rank information is the maximum transmission rank information of the PUSCH associated with the first SRS resource set only, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. And / or The bit length of the TPMI field associated with the second SRS resource set is determined based on both the maximum SRS port number of the second SRS resource set and the first information, where the second SRS resource set is any SRS resource set other than the first SRS resource set among the N SRS resource sets. Here, the first information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

[0044] For example, in some embodiments of the present application, the DCI includes two TPMI fields, and the two TPMI fields are related one-to-one to the SRS resource sets used for two codebook transmissions configured for the terminal, respectively. The bit length of the first TPMI field related to the first SRS resource set is determined based on both the maximum number of SRS ports of the first SRS resource set and the maximum transmission rank information of the PUSCH related only to the first SRS resource set. The bit length of the second TPMI field related to the second SRS resource set is determined based on both the maximum number of SRS ports of the second SRS resource set and the first information. Here, the first information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the first SRS resource set and the second SRS resource set simultaneously.

[0045] 2) Method for determining valid bits in the target field of the TPMI field 21) In some embodiments of the present application, optionally, the terminal determines the bit lengths of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, which is When it is indicated that the DCI is used to indicate that the first TPMI field is used to indicate the precoding matrix used for the first PUSCH resource transmission, it includes determining that X bits of the least significant bit (LSB) of the first TPMI field are valid bits, or that the most significant X1 bits of the first TPMI field are zero. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. The X or X1 is determined by the SRS port number of the second SRS resource set and / or the second information.

[0046] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0047] For example, the DCI includes two TMPI fields, and the two TMPI fields are related one-to-one to the SRS resource sets used for the two codebook transmissions configured for the terminal respectively. When it is indicated that the DCI is used to indicate that the first TPMI field is used to indicate the precoding matrix used for the first PUSCH resource transmission, it is determined that X bits of the least significant bit of the first TPMI field are valid bits, or that the most significant X1 bits of the first TPMI field are zero.

[0048] Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, wherein the X or X1 is determined by the number of SRS ports of the second SRS resource set and the maximum transmission rank information of the PUSCH related only to the second SRS resource set.

[0049] 22) In some embodiments of the present application, optionally, for the terminal to determine the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, when the DCI is used to indicate that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, it includes determining that the first Y code points of the first TPMI field are valid bits and the other code points are reserved, wherein the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, the Y is determined by the number of SRS ports of the second SRS resource set and / or the second information.

[0050] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0051] For example, the DCI includes two TPMI fields, and the two TPMI fields are respectively associated one-to-one with SRS resource sets used for two codebook transmissions configured for the terminal. When it is indicated that the DCI is used to indicate that the precoding matrix in which the first TPMI field is used for the first PUSCH resource transmission, it is determined that the first Y code points of the first TPMI field are valid bits and other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The Y is determined by the maximum number of SRS ports of the second SRS resource set and the maximum transmission rank information of the PUSCH related only to the second SRS resource set.

[0052] 2. SRS Resource Sets Used for Non-Codebook Transmission In some embodiments of the present application, optionally, the DCI includes N SRI fields, and the N SRI fields are respectively associated one-to-one with N SRS resource sets used for N non-codebook transmissions corresponding to the terminal. N is an integer greater than or equal to 2. The terminal determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes the terminal determining the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0053] For example, the DCI includes two SRI fields, and the two SRI fields are respectively associated one-to-one with SRS resource sets used for two non-codebook transmissions configured for the terminal. The terminal determines the bit length of the two SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0054] 1) Method for determining the bit length of the SRI field Optionally, the bit length of the first SRI field related to the first SRS resource set is determined based on both the number of SRS resources in the first SRS resource set and the second transmission rank information, where the second transmission rank information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, and / or, The bit length of the SRI field related to the second SRS resource set is determined based on both the number of SRS resources in the second SRS resource set and the first information, where the second SRS resource set is any SRS resource set other than the first SRS resource set among the N SRS resource sets, Here, the first information includes the maximum transmission rank information of the PUSCH related only to the first SRS resource set, the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

[0055] For example, the DCI includes two SRI fields, and the two SRI fields are related one-to-one to the SRS resource sets used for two non-codebook transmissions configured for the terminal. The bit length of the first SRI field related to the first SRS resource set is determined based on both the number of SRS resources in the first SRS resource set and the maximum transmission rank information of the PUSCH related only to the first SRS resource set, The bit length of the second SRI field related to the second SRS resource set is determined based on both the number of SRS resources in the second SRS resource set and the first information, wherein, the first information is, the maximum transmission rank information of the PUSCH related to only the first SRS resource set, and the maximum transmission rank information of the PUSCH related to only the second SRS resource set, and includes one of the maximum transmission rank information of the PUSCH related to both the first SRS resource set and the second SRS resource set at the same time.

[0056] 2) Method for determining valid bits in the target field of the SRI field 21) Optionally, when the terminal determines the bit lengths of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, when the DCI indicates that the first SRI field is used to indicate the SRS resource group used for the first PUSCH resource transmission, it includes determining that the W least significant bits of the first SRI field are valid bits, or that the top W1 bits of the first SRI field are zero and the rest are valid bits, wherein, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, The foregoing W or W1 is determined by the number of SRS resources in the second SRS resource set and / or the second information. Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information supported by the terminal, and the maximum transmission rank information configured by the network side.

[0057] For example, the DCI includes two SRI fields, and the two SRI fields are associated one-to-one with the SRS resource sets used for two non-codebook transmissions configured for the terminal respectively. When it is indicated that the DCI is used to indicate that the first SRI field is used to indicate the SRS resource group used for the first PUSCH resource transmission, it is determined that the W least significant bits of the first SRI field are valid bits, or the top W1 bits of the first SRI field are zero. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resources in the second SRS resource set, and the foregoing W or W1 is determined by the number of SRS resources in the second SRS resource set and the maximum transmission rank information of the PUSCH related only to the second SRS resource set.

[0058] 22) Optionally, the determination by the terminal of the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH When it is indicated that the DCI is used to indicate that the first SRI field is used to indicate the SRS resource used for the first PUSCH resource transmission, it includes determining that the first Z code points of the first SRI field are valid bits and the other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resources in the second SRS resource set. The second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. The Z is determined by the number of SRS resources in the second SRS resource set and / or second information.

[0059] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0060] For example, the DCI includes two SRI fields, and the two SRI fields are in one-to-one correspondence with the SRS resource sets used for two non-codebook transmissions configured for the terminal respectively. When it is indicated that the DCI is used to indicate that the first SRI field is used to indicate the SRS resource used for the first PUSCH resource transmission, it is determined that the first Z code points of the first SRI field are valid bits and other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resources in the second SRS resource set, and the Z is determined by the number of SRSs in the second SRS resource set and the maximum transmission rank information of the PUSCH related only to the second SRS resource set.

[0061] In an embodiment of the present application, optionally, N SRS resource sets are configured for the terminal, N is an integer greater than or equal to 2, and for the terminal to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, If the maximum transmission rank information of the PUSCH associated with each of the SRS resource sets is 1, the terminal determines that the PTRS-DMRS field of the DCI is 0 bits; otherwise, it determines that it is 2 bits. In the above embodiment, the maximum transmission rank information of the PUSCH determined by the terminal may be one or multiple. In the case of multiple, it corresponds to the multi-TRP scenario.

[0062] Hereinafter, how to determine the maximum transmission rank information of the PUSCH will be described.

[0063] In an embodiment of the present application, optionally, the maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH associated with only a single SRS resource set configured for the terminal and the maximum transmission rank information of the PUSCH associated with multiple SRS resource sets configured for the terminal simultaneously.

[0064] For example, when two SRS resource sets are configured for the terminal, the maximum transmission rank information of the PUSCH determined by the terminal is the maximum transmission rank information of the PUSCH associated with only the first SRS resource set, the maximum transmission rank information of the PUSCH associated with only the second SRS resource set, and the maximum transmission rank information of the PUSCH associated with the first SRS resource set and the second SRS resource set simultaneously.

[0065] In an embodiment of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further receives configuration information of N SRS resource sets transmitted by a network-side device, and the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0066] 1. The SRS resource set is an SRS resource set used for codebook transmission.

[0067] 1) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further includes receiving first configuration information transmitted by the network-side device, the first configuration information includes N pieces of maximum transmission rank information, and the N pieces of maximum transmission rank information are respectively associated with the N SRS resource sets in a one-to-one manner, and N is an integer greater than or equal to 2. The terminal determines the maximum transmission rank information of the PUSCH, is to determine that the maximum transmission rank information of the PUSCH related to only the target SRS resource set is a first numerical value, the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets. and / or is to determine that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is a second numerical value or a third numerical value, the second numerical value is the minimum value of the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0068] That is, M SRS resource sets may be selected from the N SRS resources for simultaneous transmission of the PUSCH, and M may be smaller than N or equal to N.

[0069] Optionally, the third numerical value is configured by the network-side device through upper layer signaling.

[0070] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0071] For example, the network-side device configures two pieces of maximum transmission rank information m1 and m2, and the two pieces of maximum transmission rank information are associated one-to-one with two SRS resource sets configured for the terminal respectively. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set, and the maximum transmission rank m1 associated with the first SRS resource set is greater than or equal to the maximum transmission rank m2 associated with the second SRS resource set.

[0072] The terminal determining the maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH associated only with the first SRS resource set being m1, the maximum transmission rank information of the PUSCH associated only with the second SRS resource set being m2, and the maximum transmission rank information of the PUSCH associated with the first SRS resource set and the second SRS resource set simultaneously being min(m1, m2) or m3 (m3 is less than or equal to min(m1, m2)).

[0073] Optionally, m3 is configured by the network-side device via upper-layer signaling.

[0074] 2) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further receives second configuration information including one indication value S for indicating the maximum transmission rank information, which is transmitted by the network-side device, The terminal determining the maximum transmission rank information of the PUSCH includes The terminal determines the maximum transmission rank information of the PUSCH based on the indicated value and the maximum number of SRS ports in the SRS resource set.

[0075] Optionally, the terminal determines the maximum transmission rank information of the PUSCH based on the indicated value S and the maximum number of SRS ports in the SRS resource set, wherein the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indicated value, or is determined to be the minimum value between the maximum number of SRS ports in the target SRS resource set and the indicated value, and the target SRS resource set is any one of the N SRS resource sets, and / or wherein the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value between the maximum number of SRS ports in the M SRS resource sets and the indicated value, or is determined to be the minimum value between the maximum number of SRS ports in each of the other SRS resource sets except the SRS resource set with the smallest identifier and the indicated value, and M is an integer less than or equal to N.

[0076] For example, the network-side device configures one maximum transmission rank information S, and the network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines that the maximum number of SRS ports in the first SRS resource set is s1 based on the configuration of the first SRS resource set, and determines that the maximum number of SRS ports in the second SRS resource set is s2 based on the configuration of the second SRS resource set.

[0077] The terminal determines the maximum transmission rank information of the PUSCH, wherein the maximum transmission rank information of the PUSCH related only to the first SRS resource set is min(s1, S) or S, The maximum transmission rank information of the PUSCH related to only the second SRS resource set is min(s2, S) or S, and it includes that the maximum transmission rank information of the PUSCH related to the first SRS resource set and the second SRS resource set simultaneously is min(S, s1, s2) or min(s2, S).

[0078] 2. The SRS resource set is an SRS resource set used for non-codebook transmission.

[0079] 1) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further includes receiving first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, and the N maximum transmission rank information is in a one-to-one correspondence with the N SRS resource sets respectively, and N is an integer greater than or equal to 2. When the terminal determines the maximum transmission rank information of the PUSCH, it is to determine that the maximum transmission rank information of the PUSCH related to only the target SRS resource set is a first numerical value, where the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets. And / or it is to determine that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is a second numerical value or a third numerical value, where the second numerical value is the minimum value of the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0080] Optionally, the third numerical value is configured by the network-side device via upper-layer signaling.

[0081] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0082] For example, the network-side device configures two maximum transmission rank information n1 and n2, and the two maximum transmission rank information are associated one-to-one with two SRS resource sets configured for the terminal respectively. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set, and the maximum transmission rank n1 associated with the first SRS resource set is greater than or equal to the maximum transmission rank n2 associated with the second SRS resource set.

[0083] The terminal determining the maximum transmission rank information of the PUSCH includes that the maximum transmission rank information of the PUSCH associated only with the first SRS resource set is n1, the maximum transmission rank information of the PUSCH associated only with the second SRS resource set is n2, and the maximum transmission rank information of the PUSCH associated with the first SRS resource set and the second SRS resource set simultaneously is min(n1, n2) or n3 (n3 is less than or equal to min(n1, n2)).

[0084] Optionally, n3 is configured by the network-side device via upper-layer signaling.

[0085] 2) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further includes receiving third configuration information including one indication value for indicating the maximum transmission rank information, which is transmitted by the network-side device. The terminal determining the maximum transmission rank information of the PUSCH The terminal determines the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0086] Optionally, the terminal determines the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set, where the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or is determined to be the minimum value between the number of SRS resources in the target SRS resource set and the indication value, and the target SRS resource set is any one of the N SRS resource sets. and / or where the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value between the number of SRS resources in the M SRS resource sets and the indication value, or is determined to be the minimum value between the number of SRS resources in each of the other SRS resource sets except the SRS resource set with the smallest identifier and the indication value, and M is an integer less than or equal to N.

[0087] For example, the network-side device configures one indication value, and the network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines that the number of SRS resources in the first SRS resource set is u1 based on the configuration of the first SRS resource set, and determines that the number of SRS resources in the second SRS resource set is u2 based on the configuration of the second SRS resource set.

[0088] The terminal determines the maximum transmission rank information of the PUSCH, where the maximum transmission rank information of the PUSCH related only to the first SRS resource set is min(u1, U) or U, The maximum transmission rank information of the PUSCH related only to the second SRS resource set is min(u2, U) or U, and the maximum transmission rank information of the PUSCH related to the first SRS resource set and the second SRS resource set simultaneously is min(U, u1, u2) or min(u2, U).

[0089] 3) In some embodiments of the present application, optionally, the terminal determining the maximum transmission rank information of the PUSCH includes the terminal determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0090] Optionally, the terminal determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set is determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets, and / or is determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value among the numbers of SRS resources in the M SRS resource sets, or the minimum value among the numbers of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, where M is an integer less than or equal to N.

[0091] For example, the network-side device does not configure the maximum transmission rank information. The network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines that the number of SRS resources in the first SRS resource set is u1 based on the configuration of the first SRS resource set, and determines that the number of SRS resources in the second SRS resource set is u2 based on the configuration of the second SRS resource set.

[0092] The terminal's determination of the maximum transmission rank information of the PUSCH includes that the maximum transmission rank information of the PUSCH related only to the first SRS resource set is u1, the maximum transmission rank information of the PUSCH related only to the second SRS resource set is u2, and the maximum transmission rank information of the PUSCH related to both the first SRS resource set and the second SRS resource set is min(u1, u2) or u2.

[0093] Referring to FIG. 4, the embodiment of the present application provides an uplink channel transmission rank determination method, including the following.

[0094] Step 41: The terminal determines the maximum transmission rank information of the PUSCH, and the maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to multiple SRS resource sets configured for the terminal at the same time.

[0095] In the embodiment of the present application, in a multi-TRP scenario, by configuring different maximum transmission ranks for different TRPs, when switching to single-TRP transmission, it is ensured that the terminal can transmit a larger number of layers based on the current TRP configuration and obtain relatively good throughput performance.

[0096] For example, when configuring two SRS resource sets for the terminal, the maximum transmission rank information of the PUSCH determined by the terminal includes the maximum transmission rank information of the PUSCH related only to the first SRS resource set, the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and the maximum transmission rank information of the PUSCH related to both the first SRS resource set and the second SRS resource set.

[0097] In an embodiment of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the method further includes the terminal receiving configuration information of N SRS resource sets transmitted by a network-side device, where the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0098] 1. The SRS resource set is an SRS resource set used for codebook transmission 1) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the method further includes the terminal receiving first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, and the N maximum transmission rank information is in one-to-one correspondence with the N SRS resource sets respectively, and N is an integer greater than or equal to 2. The terminal determining the maximum transmission rank information of the PUSCH is determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is a first value, where the first value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets, and / or Determining that the maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is a second numerical value or a third numerical value, where the second numerical value is the minimum value among the maximum transmission ranks configured for the M SRS resource sets by the network-side device, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0099] Optionally, the third numerical value is configured by the network-side device via upper layer signaling.

[0100] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0101] For example, the network-side device configures two maximum transmission rank information m1 and m2, and the two maximum transmission rank information are related one-to-one to two SRS resource sets configured for the terminal respectively. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set, and the maximum transmission rank m1 related to the first SRS resource set is greater than or equal to the maximum transmission rank m2 related to the second SRS resource set.

[0102] For the terminal to determine the maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH related only to the first SRS resource set is m1, the maximum transmission rank information of the PUSCH related only to the second SRS resource set is m2, and the maximum transmission rank information of the PUSCH related to the first SRS resource set and the second SRS resource set simultaneously is min(m1, m2) or m3 (m3 is less than or equal to min(m1, m2)).

[0103] Optionally, m3 is configured by the network-side device via upper-layer signaling.

[0104] 2) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the method further includes the terminal receiving second configuration information including a single indication value S for instructing the maximum transmission rank information, which is transmitted by the network-side device. The terminal determining the maximum transmission rank information of the PUSCH includes the terminal determining the maximum transmission rank information of the PUSCH based on the indication value S and the maximum number of SRS ports of the SRS resource set.

[0105] Optionally, the terminal determining the maximum transmission rank information of the PUSCH based on the indication value S and the maximum number of SRS ports of the SRS resource set is to determine that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or the minimum value of the maximum number of SRS ports of the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets, and / or is to determine that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value of the maximum number of SRS ports of the M SRS resource sets and the indication value, or the minimum value of the maximum number of SRS ports of each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, where M is an integer less than or equal to N.

[0106] For example, the network-side device configures one maximum transmission rank information S, and the network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines that the maximum SRS port number of the first SRS resource set is s1 based on the configuration of the first SRS resource set, and determines that the maximum SRS port number of the second SRS resource set is s2 based on the configuration of the second SRS resource set.

[0107] The terminal's determination of the maximum transmission rank information of the PUSCH includes that the maximum transmission rank information of the PUSCH related only to the first SRS resource set is min(s1, S) or S, the maximum transmission rank information of the PUSCH related only to the second SRS resource set is min(s2, S) or S, and the maximum transmission rank information of the PUSCH related to both the first SRS resource set and the second SRS resource set simultaneously is min(S, s1, s2) or min(s2, S).

[0108] 2. The SRS resource set is an SRS resource set used for non-codebook transmission 1) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further includes receiving first configuration information transmitted by the network-side device. The first configuration information includes N maximum transmission rank information, and the N maximum transmission rank information is in one-to-one correspondence with the N SRS resource sets respectively. N is an integer greater than or equal to 2. The terminal's determination of the maximum transmission rank information of the PUSCH Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is a first numerical value, where the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets. And / or Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is a second numerical value or a third numerical value, where the second numerical value is the minimum value among the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0109] Optionally, the third numerical value is configured by the network-side device via upper layer signaling.

[0110] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0111] For example, the network-side device configures two maximum transmission rank information n1 and n2, and the two maximum transmission rank information are related one-to-one to two SRS resource sets configured for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set, and the maximum transmission rank n1 related to the first SRS resource set is greater than or equal to the maximum transmission rank n2 related to the second SRS resource set.

[0112] For the terminal to determine the maximum transmission rank information of the PUSCH The maximum transmission rank information of the PUSCH related only to the first SRS resource set is n1, the maximum transmission rank information of the PUSCH related only to the second SRS resource set is n2, including that the maximum transmission rank information of the PUSCH related to both the first SRS resource set and the second SRS resource set simultaneously is min(n1, n2) or n3 (n3 is less than or equal to min(n1, n2)).

[0113] Optionally, n3 is configured by the network - side device via upper - layer signaling.

[0114] 2) In some embodiments of the present application, optionally, before the terminal determines the maximum transmission rank information of the PUSCH, the terminal further receives third configuration information including one indication value for indicating the maximum transmission rank information, which is transmitted by the network - side device. The terminal determining the maximum transmission rank information of the PUSCH includes the terminal determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0115] Optionally, the terminal determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set is that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or is determined to be the minimum value among the number of SRS resources in the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets, and / or The maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is the minimum value between the number of SRS resources in the M SRS resource sets and the indication value, or is the minimum value between the number of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, including that M is an integer less than or equal to N.

[0116] For example, the network-side device configures one indication value, and the network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines, based on the configuration of the first SRS resource set, that the number of SRS resources in the first SRS resource set is u1, and determines, based on the configuration of the second SRS resource set, that the number of SRS resources in the second SRS resource set is u2.

[0117] The terminal's determination of the maximum transmission rank information of the PUSCH includes that the maximum transmission rank information of the PUSCH associated only with the first SRS resource set is min(u1, U) or U, the maximum transmission rank information of the PUSCH associated only with the second SRS resource set is min(u2, U)) or U), and the maximum transmission rank information of the PUSCH associated with the first SRS resource set and the second SRS resource set simultaneously is min(U, u1, u2) or min(u2, U)).

[0118] 3) In some embodiments of the present application, optionally, the terminal's determination of the maximum transmission rank information of the PUSCH includes that the terminal determines the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0119] Optionally, the terminal determines the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set, which is Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets, and / or Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value among the numbers of SRS resources in the M SRS resource sets, or the minimum value among the numbers of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, where M is an integer less than or equal to N.

[0120] For example, the network-side device does not configure the maximum transmission rank information. The network-side device configures two SRS resource sets for the terminal. Here, the identifier of the first SRS resource set is smaller than the identifier of the second SRS resource set. The terminal determines, based on the configuration of the first SRS resource set, that the number of SRS resources in the first SRS resource set is u1, and determines, based on the configuration of the second SRS resource set, that the number of SRS resources in the second SRS resource set is u2.

[0121] The terminal determines the maximum transmission rank information of the PUSCH, which is The maximum transmission rank information of the PUSCH related only to the first SRS resource set is u1, The maximum transmission rank information of the PUSCH related only to the second SRS resource set is u2, Including that the maximum transmission rank information of the PUSCH related to the first SRS resource set and the second SRS resource set simultaneously is min(u1, u2) or u2.

[0122] It should be noted that, in the embodiment of the present application, the downlink control information indication method may be an execution entity that is a downlink control information decoding device or a control module for executing the downlink control information indication method in this downlink control information decoding device. In the embodiment of the present application, taking the downlink control information decoding device executing the downlink control information indication method as an example, the downlink control information decoding device according to the embodiment of the present application will be described.

[0123] Referring to FIG. 5, FIG. 5 is a schematic structural diagram of the downlink control information decoding device according to the embodiment of the present application. This device includes a first receiving module 51 for receiving DCI for scheduling PUSCH, and a first determining module 52 for determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. The target field includes at least one SRI field, and at least one TPMI field, and at least one of the PTRS-DMRS fields.

[0124] In the embodiment of the present application, it is clarified that the terminal determines the bit length of the target field of the DCI for scheduling PUSCH and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, so that the terminal can correctly decode the target field of the DCI, thereby performing correct PUSCH transmission.

[0125] Optionally, the DCI includes N TPMI fields, and the N TPMI fields are in one-to-one correspondence with N channel sounding reference signal SRS resource sets corresponding to the terminals respectively, where N is an integer greater than or equal to 2, and the first determination module 52 is used to determine the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0126] Optionally, the bit length of the first TPMI field related to the first SRS resource set is determined based on both the maximum number of SRS ports of the first SRS resource set and the first transmission rank information, where the first transmission rank information is the maximum transmission rank information of the PUSCH related to only the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. and / or The bit length of the TPMI field related to the second SRS resource set is determined based on both the maximum number of SRS ports of the second SRS resource set and the first information, where the second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets. Here, the first information includes the maximum transmission rank information of the PUSCH related to only the first SRS resource set, and the maximum transmission rank information of the PUSCH related to only the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

[0127] Optionally, when the first determination module 52 determines that the DCI indicates that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, the first determination module 52 is used to determine that the least significant X bits of the first TPMI field are valid bits, or the most significant X1 bits of the first TPMI field are zero and the remaining bits are valid bits. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is any SRS resource set other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. X or X1 is determined by the number of SRS ports of the second SRS resource set and / or second information.

[0128] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0129] Optionally, when the first determination module 52 determines that the DCI indicates that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, the first determination module 52 is used to determine that the first Y code points of the first TPMI field are valid bits. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets, The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, The Y is determined by the number of SRS ports of the second SRS resource set and / or second information.

[0130] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0131] Optionally, the DCI includes N SRI fields, and the N SRI fields are associated one-to-one with the N SRS resource sets corresponding to the terminal, respectively, where N is an integer greater than or equal to 2. Optionally, the first determination module 52 is used to determine the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0132] Optionally, the bit length of the first SRI field related to the first SRS resource set is determined based on both the number of SRS resources in the first SRS resource set and second transmission rank information, where the second transmission rank information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. And / or The bit length of the SRI field related to the second SRS resource set is determined based on both the number of SRS resources in the second SRS resource set and first information, where the second SRS resource set is other SRS resource sets other than the first SRS resource set among the N SRS resource sets, Here, the first information is the maximum transmission rank information of PUSCH related to only the first SRS resource set, and the maximum transmission rank information of PUSCH related to only the second SRS resource set, and one of the maximum transmission rank information of PUSCH related to the N SRS resource sets simultaneously.

[0133] Optionally, when the first determination module 52 determines that the DCI is used to indicate that the first SRI field is used to indicate the SRS resource group for the first PUSCH resource transmission, the W bits of the least significant valid bit of the first SRI field are valid bits, or the top W1 bits of the first SRI field are zero and the rest are valid bits, and is used to make this determination, Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is other SRS resource sets other than the first SRS resource set among the N SRS resource sets, the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, The aforementioned W or W1 is determined by the number of SRS resources in the second SRS resource set and / or the second information. Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0134] Optionally, when the DCI indicates that the first SRI field is used to indicate the SRS resource used for the first PUSCH resource transmission, the first determination module 52 is used to determine that the first Z code points of the first SRI field are valid bits and the other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is other SRS resource sets other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. The Z is determined by the number of SRS resources in the second SRS resource set and / or the second information.

[0135] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0136] Optionally, N SRS resource sets are configured in the terminal, where N is an integer greater than or equal to 2. For the terminal to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, if the maximum transmission rank information of the PUSCH associated with each of the SRS resource sets is 1, the terminal determines that the PTRS-DMRS field of the DCI is 0 bits; otherwise, it determines that the PTRS-DMRS field is 2 bits.

[0137] Optionally, the maximum transmission rank information of the PUSCH is the maximum transmission rank information of the PUSCH associated with only a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH associated with multiple SRS resource sets configured for the terminal simultaneously.

[0138] Optionally, the apparatus further includes a second receiving module for receiving configuration information of N SRS resource sets transmitted by a network-side device, where the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0139] Optionally, the apparatus further includes a third receiving module for receiving first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, the N maximum transmission rank information is in a one-to-one correspondence with the N SRS resource sets respectively, and N is an integer greater than or equal to 2, and a second determining module for determining the maximum transmission rank information of the PUSCH based on the first configuration information. Here, The maximum transmission rank information of the PUSCH related only to the target SRS resource set is the first numerical value, and the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set. The target SRS resource set is any one of the N SRS resource sets. And / or The maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the second numerical value or the third numerical value. The second numerical value is the minimum value among the maximum transmission ranks configured by the network-side device for the M SRS resource sets. The third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0140] Optionally, the third numerical value is configured by the network-side device via upper layer signaling.

[0141] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0142] Optionally, the SRS resource set is the SRS resource set used for codebook transmission. Optionally, the device further includes a fourth receiving module for receiving second configuration information including one indication value for indicating the maximum transmission rank information transmitted by the network-side device. and a third determination module for determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum SRS port number of the SRS resource set.

[0143] Optionally, the third determination module The maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or is determined to be the minimum value between the maximum number of SRS ports of the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value between the maximum number of SRS ports of the M SRS resource sets and the indication value, or is determined to be the minimum value between the maximum number of SRS ports of each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, where M is an integer less than or equal to N and is used for this.

[0144] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission. Optionally, the apparatus further includes a fifth receiving module for receiving third configuration information including an indication value U for instructing maximum transmission rank information transmitted by a network-side device, and a fourth determining module for determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0145] Optionally, the fourth determining module determines that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or is the minimum value between the number of SRS resources in the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is the minimum of the number of SRS resources in the M SRS resource sets and the indication value, or the minimum of the number of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, and is used for the case where M is an integer less than or equal to N.

[0146] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission. The apparatus further includes a fifth determination module for determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0147] Optionally, the fifth determination module determines that the maximum transmission rank information of the PUSCH associated with only the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is the minimum of the number of SRS resources in the M SRS resource sets, or the minimum of the number of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, and is used for the case where M is an integer less than or equal to N.

[0148] The downlink control information decoding apparatus according to the embodiment of the present application may be an apparatus, an apparatus having an operating system, or an electronic device, and may also be a member, an integrated circuit, or a chip in a terminal. This apparatus or electronic device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminal 11 listed above. The non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a deposit and payment machine, or a self-service machine, etc. The embodiment of the present application is not specifically limited.

[0149] The downlink control information decoding apparatus according to the embodiment of the present application realizes each process realized by the embodiment of the method in FIG. 3 and can achieve the same technical effect. To avoid repetition of the description, it will not be described further here.

[0150] It should be noted that the uplink channel transmission rank determination method according to the embodiment of the present application may have an execution body that is an uplink channel transmission rank determination apparatus or a control module for executing the uplink channel transmission rank determination method in this uplink channel transmission rank determination apparatus. In the embodiment of the present application, taking the uplink channel transmission rank determination apparatus executing the uplink channel transmission rank determination method as an example, the uplink channel transmission rank determination apparatus according to the embodiment of the present application will be described.

[0151] Referring to FIG. 6, the embodiment of the present application further provides an uplink channel transmission rank determination apparatus 60, and this apparatus includes a determination module 61 for determining the maximum transmission rank information of the PUSCH, and the maximum transmission rank information of the PUSCH is the maximum transmission rank information of the PUSCH related only to a single SRS resource set configured for the terminal, and It includes the maximum transmission rank information of PUSCH that is simultaneously related to a plurality of SRS resource sets configured for the terminal.

[0152] In an embodiment of the present application, in a multi-TRP scenario, by configuring different maximum transmission ranks for different TRPs, when switching to single-TRP transmission, it is ensured that the terminal can transmit a larger number of layers based on the current TRP configuration and obtain relatively good throughput performance.

[0153] Optionally, the apparatus further includes a first receiving module for receiving configuration information of N SRS resource sets transmitted by a network-side device, where the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0154] Optionally, the apparatus further includes a second receiving module for receiving first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, and the N maximum transmission rank information is respectively related to the N SRS resource sets in a one-to-one manner, and N is an integer greater than or equal to 2. The determining module 61 determines that the maximum transmission rank information of PUSCH related only to the target SRS resource set is a first numerical value, where the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets. And / or Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the second numerical value or the third numerical value, where the second numerical value is the minimum value among the maximum transmission ranks configured for the M SRS resource sets by the network-side device, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0155] Optionally, the third numerical value is configured by the network-side device via upper layer signaling.

[0156] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0157] Optionally, the SRS resource set is the SRS resource set used for codebook transmission. The apparatus further includes a third receiving module for receiving second configuration information including one indication value for indicating maximum transmission rank information transmitted by a network-side device, and a determining module 61 for determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set.

[0158] Optionally, the determining module 61 determines that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value or the minimum value among the maximum number of SRS ports of the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets, and / or The maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is the minimum value of the maximum number of SRS ports of the M SRS resource sets and the indication value, or the minimum value of the maximum number of SRS ports of each of the other SRS resource sets other than the SRS resource set with the smallest identifier, and is used for the case where M is an integer less than or equal to N.

[0159] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission. The apparatus further includes a fourth receiving module for receiving third configuration information including one indication value for indicating the maximum transmission rank information, transmitted by a network-side device. and the determining module 61 for determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0160] The determining module 61 determines that the maximum transmission rank information of the PUSCH associated only with the target SRS resource set is the indication value, or the minimum value of the number of SRS resources in the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is the minimum value of the number of SRS resources in the M SRS resource sets and the indication value, or the minimum value of the number of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, and is used for the case where M is an integer less than or equal to N.

[0161] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission, and the determining module 61 is used to determine the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0162] Optionally, the determining module 61 determines that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets, and / or determines that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value among the numbers of SRS resources in the M SRS resource sets, or the minimum value among the numbers of SRS resources in each of the other SRS resource sets except the SRS resource set with the smallest identifier, where M is an integer less than or equal to N, and is used for this.

[0163] The uplink channel transmission rank determination device in the embodiments of the present application may be a device, a device having an operating system, or an electronic device, and may also be a component, an integrated circuit, or a chip in a terminal. This device or electronic device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminal 11 listed above. The non-mobile terminal may be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a deposit and payment machine, or a self-service machine, etc., and the embodiments of the present application do not specifically limit this.

[0164] The uplink channel transmission rank determination device according to the embodiment of the present application realizes each process realized by the embodiment of the method in FIG. 4 and can achieve the same technical effect. To avoid repetition of description, it will not be described further herein.

[0165] As shown in FIG. 7, the embodiment of the present application further provides a terminal 70, including a processor 71, a memory 72, and a program or instruction stored in the memory 72 and executable on the processor 71. When this program or instruction is executed by the processor 71, each process of the embodiment of the above downlink control information indication method or the uplink channel transmission rank determination method is realized, and the same technical effect can be achieved. To avoid repetition of description, it will not be described further herein.

[0166] The embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is used to receive the DCI of the scheduled PUSCH. The processor is further used to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. The target field includes at least one SRI field, at least one TPMI field, and at least one of the PTRS-DMRS fields.

[0167] This embodiment of the terminal corresponds to the embodiment of the above downlink control information indication method. Each implementation process and implementation method of the embodiment of the above downlink control information indication method can be applied to this embodiment of the terminal and can achieve the same technical effect.

[0168] The embodiment of the present application further provides a terminal, including a processor and a communication interface. The processor is used to determine the maximum transmission rank information of the PUSCH. The maximum transmission rank information of the PUSCH is The maximum transmission rank information of the PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to a plurality of SRS resource sets configured for the terminal simultaneously.

[0169] The embodiment of this terminal corresponds to the embodiment of the uplink channel transmission rank determination method, and each implementation process and realization method of the embodiment of the uplink channel transmission rank determination method can all be applied to the embodiment of this terminal and can achieve the same technical effect.

[0170] Specifically, FIG. 8 is a schematic hardware structure diagram for realizing the terminal of the embodiment of the present application.

[0171] This terminal 80 includes at least some of the members such as a radio frequency unit 81, a network module 82, an audio output unit 83, an input unit 84, a sensor 85, a display unit 86, a user input unit 87, an interface unit 88, a memory 89, and a processor 810, but is not limited thereto.

[0172] As can be understood by those skilled in the art, the terminal 80 may further include a power source (for example, a battery) for supplying power to each member, and the power source may be logically connected to the processor 810 by a power management system, whereby functions such as charge and discharge management and power consumption management can be realized by the power management system. The terminal structure shown in FIG. 8 does not constitute a limitation on the terminal, and the terminal may include more or fewer members than the members shown in the figure, or a combination of some members, or an arrangement of different members, which will not be described further here.

[0173] It should be understood that in the embodiments of the present application, the input unit 84 may include a Graphics Processing Unit (GPU) 841 and a microphone 842. The graphics processor 841 processes the image data of a still image or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 86 may include a display panel 861, and the display panel 861 may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 87 includes a touch panel 871 and other input devices 872. The touch panel 871 is also called a touch screen. The touch panel 871 may include two parts: a touch detection device and a touch controller. The other input devices 872 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and an operation lever, and will not be described further here.

[0174] In the embodiments of the present application, after receiving the downlink data from the network-side device, the radio frequency unit 81 causes the processor 810 to process it, and also transmits the uplink data to the network-side device. Generally, the radio frequency unit 81 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0175] Memory 89 may be used to store software programs or instructions and various data. Memory 89 may mainly include a program or instruction storage area and a data storage area. Here, the program or instruction storage area may store an operating system, application programs or instructions required for at least one function (for example, an audio playback function, an image playback function, etc.). Note that Memory 89 may include a high-speed random access memory and may also include a non-volatile memory. Here, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, it may be at least one magnetic disk memory device, a flash memory device, or other non-volatile solid-state memory devices.

[0176] Processor 810 may include one or more processing units. Optionally, Processor 810 may integrate an application processor and a modem processor. Here, the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communication, for example, a baseband processor. As can be understood, the above modem processor may not be integrated into Processor 810.

[0177] Here, in some embodiments, the radio frequency unit 81 is used to receive the DCI of the scheduled PUSCH. The processor 810 is further used to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. The target field is at least one SRI field, and at least one TPMI field, and includes at least one of a PTRS-DMRS field.

[0178] In an embodiment of the present application, it is clarified that the terminal determines the bit length of the target field of the DCI for scheduling PUSCH and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, so that the terminal can correctly decode the target field of the DCI, thereby performing correct PUSCH transmission.

[0179] Optionally, the DCI includes N TMPI fields, and the N TMPI fields are respectively associated one-to-one with N channel sounding reference signal SRS resource sets corresponding to the terminal, N is an integer greater than or equal to 2, and the above-mentioned determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes determining the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0180] Optionally, the bit length of the first TPMI field associated with the first SRS resource set is determined based on both the maximum SRS port number of the first SRS resource set and the first transmission rank information, and the first transmission rank information is the maximum transmission rank information of the PUSCH associated only with the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. and / or The bit length of the TPMI field related to the second SRS resource set is determined based on both the maximum number of SRS ports of the second SRS resource set and the first information, and the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets. Here, the first information is the maximum transmission rank information of the PUSCH related to only the first SRS resource set, and the maximum transmission rank information of the PUSCH related to only the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

[0181] Optionally, determining the bit lengths of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes when the DCI indicates that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, determining that the X least significant bits of the first TPMI field are valid bits, or that the most significant X1 bits of the first TPMI field are zero and the rest are valid bits, where the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, where X or X1 is determined by the number of SRS ports of the second SRS resource set and / or the second information.

[0182] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related to only the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0183] Optionally, determining the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes determining that when the DCI is used to indicate the precoding matrix used by the first TPMI field for the first PUSCH resource transmission, the first Y code points of the first TPMI field are valid bits and the other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. The Y is determined by the number of SRS ports of the second SRS resource set and / or the second information.

[0184] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related to only the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0185] Optionally, the DCI includes N SRI fields, and the N SRI fields are related one-to-one to the N SRS resource sets corresponding to the terminal respectively, where N is an integer greater than or equal to 2. Determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH as described above includes determining the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

[0186] Optionally, the bit length of the first SRI field related to the first SRS resource set is determined based on both the number of SRS resources in the first SRS resource set and the first transmission rank information, where the first transmission rank information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. And / or, The bit length of the SRI field related to the second SRS resource set is determined based on both the number of SRS resources in the second SRS resource set and the first information, where the second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets. Here, the first information includes the maximum transmission rank information of the PUSCH related only to the first SRS resource set, the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

[0187] Optionally, determining the bit lengths of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes determining that when the DCI indicates that the first SRI field is used to indicate the SRS resource group for the first PUSCH resource transmission, the least significant W bits of the first SRI field are valid bits, or the most significant W1 bits of the first SRI field are zero and the rest are valid bits. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set. The second SRS resource set is any SRS resource set other than the first SRS resource set among the N SRS resource sets. The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. W or W1 is determined by the number of SRS resources in the second SRS resource set and / or the second information. Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0188] Optionally, determining the bit lengths of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes determining that when the DCI indicates that the first SRI field is used to indicate the SRS resource for the first PUSCH resource transmission, the first Z code points of the first SRI field are valid bits and the other code points are reserved. Here, the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, The second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, The first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, The Z is determined by the number of SRS resources in the second SRS resource set and / or the second information.

[0189] Optionally, the second information includes at least one of the maximum transmission rank information of the PUSCH related only to the second SRS resource set, the maximum transmission rank information configured by the network side, and the maximum transmission rank supported by the terminal.

[0190] Optionally, N SRS resource sets are configured for the terminal, N is an integer greater than or equal to 2, and for the terminal to determine the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, if the maximum transmission rank information of the PUSCH related to each of the SRS resource sets is all 1, it includes that the terminal determines that the PTRS-DMRS field of the DCI is 0 bits, otherwise, it determines that it is 2 bits.

[0191] Optionally, the maximum transmission rank information of the PUSCH is the maximum transmission rank information of the PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to multiple SRS resource sets configured for the terminal simultaneously.

[0192] Optionally, the radio frequency unit 81 is further used to receive configuration information of N SRS resource sets transmitted by a network-side device, where the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0193] Optionally, the radio frequency unit 81 is further used to receive first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, and the N maximum transmission rank information is respectively associated with the N SRS resource sets one-to-one, and N is an integer greater than or equal to 2. Determining the maximum transmission rank information of the PUSCH is to determine that the maximum transmission rank information of the PUSCH associated with only the target SRS resource set is a first value, where the first value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets. and / or is to determine that the maximum transmission rank information of the PUSCH associated with M SRS resource sets simultaneously is a second value or a third value, where the second value is the minimum value of the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third value is configured by the network-side device, and M is an integer less than or equal to N.

[0194] Optionally, the third value is configured by the network-side device via upper layer signaling.

[0195] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0196] Optionally, the SRS resource set is an SRS resource set used for codebook transmission. Optionally, the radio frequency unit 81 is further used to receive second configuration information including one indication value for indicating the maximum transmission rank information transmitted by the network side device. Determining the maximum transmission rank information of the PUSCH includes determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set.

[0197] Optionally, determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set is determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value or the minimum value of the maximum number of SRS ports of the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets. and / or determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value of the maximum number of SRS ports of the M SRS resource sets and the indication value, or the minimum value of the maximum number of SRS ports of each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, where M is an integer less than or equal to N.

[0198] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission. Optionally, the radio frequency unit 81 is further used to receive third configuration information including one indication value U for indicating the maximum transmission rank information transmitted by the network side device, Determining the maximum transmission rank information of the PUSCH includes determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0199] Optionally, determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set includes: Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indication value, or determining that it is the minimum value of the number of SRS resources in the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets, and / or Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value of the number of SRS resources in the M SRS resource sets and the indication value, or determining that it is the minimum value of the number of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, where M is an integer less than or equal to N.

[0200] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission, and determining the maximum transmission rank information of the PUSCH includes determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0201] Optionally, determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set includes: Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets, and / or Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value among the numbers of SRS resources in the M SRS resource sets, or the minimum value among the numbers of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, where M is an integer less than or equal to N.

[0202] Here, in some embodiments, the processor 810 is used to determine the maximum transmission rank information of the PUSCH, and the maximum transmission rank information of the PUSCH is the maximum transmission rank information of the PUSCH related only to a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to a plurality of SRS resource sets configured for the terminal simultaneously.

[0203] Optionally, the radio frequency unit 81 is used to receive the configuration information of N SRS resource sets transmitted by the network side device, and the SRS resource set is an SRS resource set used for codebook transmission or an SRS resource set used for non-codebook transmission.

[0204] Optionally, the radio frequency unit 81 is used to receive the first configuration information transmitted by the network side device, the first configuration information includes N maximum transmission rank information, the N maximum transmission rank information is related to the N SRS resource sets one-to-one respectively, and N is an integer greater than or equal to 2. Determining the maximum transmission rank information of the PUSCH is Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is a first numerical value, where the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets, and / or, Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is a second numerical value or a third numerical value, where the second numerical value is the minimum value among the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N.

[0205] Optionally, the third numerical value is configured by the network-side device via upper layer signaling.

[0206] Optionally, the maximum transmission rank corresponding to the first SRS resource set among the N SRS resource sets is the largest, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

[0207] Optionally, the SRS resource set is the SRS resource set used for codebook transmission, Optionally, the radio frequency unit 81 is used to receive second configuration information including an indication value S for indicating the maximum transmission rank information transmitted by the network-side device, Determining the maximum transmission rank information of the PUSCH includes determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set.

[0208] Optionally, determining the maximum transmission rank information of PUSCH based on the indication value and the maximum number of SRS ports in the SRS resource set includes: Determining that the maximum transmission rank information of PUSCH related only to the target SRS resource set is the indication value, or the minimum value between the maximum number of SRS ports in the target SRS resource set and the indication value, where the target SRS resource set is any one of the N SRS resource sets; and / or Determining that the maximum transmission rank information of PUSCH related to M SRS resource sets simultaneously is the minimum value between the maximum number of SRS ports in the M SRS resource sets and the indication value, or the minimum value between the maximum number of SRS ports in each of the other SRS resource sets other than the SRS resource set with the smallest identifier and the indication value, where M is an integer less than or equal to N.

[0209] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission; Optionally, the radio frequency unit 81 is used to receive third configuration information including an indication value U for indicating the maximum transmission rank information transmitted by the network-side device; Determining the maximum transmission rank information of PUSCH includes determining the maximum transmission rank information of PUSCH based on the indication value and the number of SRS resources in the SRS resource set.

[0210] Optionally, determining the maximum transmission rank information of PUSCH based on the indication value and the number of SRS resources in the SRS resource set includes: The maximum transmission rank information of the PUSCH related only to the target SRS resource set is the indicated value, or it is determined to be the minimum value between the number of SRS resources in the target SRS resource set and the indicated value, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is the minimum value between the number of SRS resources in the M SRS resource sets and the indicated value, or it is determined to be the minimum value between the number of SRS resources in each of the other SRS resource sets except for the SRS resource set with the smallest identifier and the indicated value, where M is an integer less than or equal to N.

[0211] Optionally, the SRS resource set is an SRS resource set used for non-codebook transmission, and determining the maximum transmission rank information of the PUSCH includes determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set.

[0212] Optionally, determining the maximum transmission rank information of the PUSCH based on the number of SRS resources in the SRS resource set as described above is determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is the number of SRS resources in the target SRS resource set, where the target SRS resource set is any one of the N SRS resource sets. and / or The maximum transmission rank information of the PUSCH simultaneously associated with M SRS resource sets is the minimum value among the numbers of SRS resources in the M SRS resource sets, or the minimum value among the numbers of SRS resources in each of the other SRS resource sets other than the SRS resource set with the smallest identifier, where M is an integer less than or equal to N.

[0213] The embodiments of the present application further provide a readable storage medium, which may be non-volatile or volatile. A program or instructions are stored in the readable storage medium. When the program or instructions are executed by a processor, each process of the embodiments of the above downlink control information indication method or uplink channel transmission rank determination method is realized, and the same technical effect can be achieved. To avoid repetition of the description, it will not be described further here.

[0214] Here, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0215] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor runs a program or instructions and is used to realize each process of the embodiments of the above downlink control information indication method or uplink channel transmission rank determination method, and the same technical effect can be achieved. To avoid repetition of the description, it will not be described further here.

[0216] It should be understood that the chip mentioned in the embodiments of the present application may also be called a system-level chip, a system chip, a chip system, or a system-on-chip.

[0217] It should be noted that in this specification, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive "include", so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such a process, method, article or apparatus. In the case where there are no further restrictions, for an element limited by the phrase "comprising one...", it is not excluded that there are also other same elements in the process, method, article or apparatus including this element. It should be pointed out that the scope of the method and apparatus in the embodiments of this application is not limited to executing functions in the order illustrated or discussed, but may include executing functions in a basically simultaneous manner or in a reverse order based on the functions involved. For example, a method described in a different procedure from that described can be executed, and various steps can be added, omitted or combined. Also, features described with reference to some examples can be combined in other examples.

[0218] From the description of the above embodiments, it should be clearly understood by those skilled in the art that the method of the above embodiments can be realized in the form of software and the necessary general-purpose hardware platform. Of course, it may also be realized by hardware, but in many cases, the former is a more preferred embodiment. Based on such an understanding, the technical solution of this application, in essence or the part that has contributed to the prior art, may be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of this application.

[0219] The above has described the embodiments of the present application while associating with the drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely exemplary and not restrictive. Those skilled in the art can also perform many forms based on the suggestion of the present application, as long as they do not deviate from the spirit of the present application and the scope of the claims, and all of them belong to the protection scope of the present application.

Claims

1. A downlink control information indication method, comprising: a terminal receiving downlink control information DCI for scheduling a physical uplink shared channel PUSCH; the terminal determining a bit length of a target field of the DCI and valid bits in the target field based on maximum transmission rank information of the PUSCH, wherein the target field includes: at least one channel sounding reference signal resource indication SRI field; at least one broadband precoding matrix indication TPMI field; at least one of a phase tracking reference signal - demodulation reference signal PTRS - DMRS field; the DCI includes N TPMI fields, and the N TPMI fields are respectively associated one - to - one with N channel sounding reference signal SRS resource sets corresponding to the terminal, where N is an integer greater than or equal to 2; the terminal determining the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH includes: the terminal determining the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH. A downlink control information indication method.

2. The bit length of the first TPMI field associated with the first SRS resource set is determined based on both the maximum SRS port number of the first SRS resource set and first transmission rank information, where the first transmission rank information is the maximum transmission rank information of the PUSCH associated only with the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets; and / or the bit length of the TPMI field associated with the second SRS resource set is determined based on both the maximum SRS port number of the second SRS resource set and first information, where the second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets; wherein the first information is the maximum transmission rank information of the PUSCH related only to the first SRS resource set, and the maximum transmission rank information of the PUSCH related only to the second SRS resource set, and the method according to claim 1, comprising one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

3. For the terminal to determine the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, when the DCI indicates that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, it is determined that the X least significant bits of the first TPMI field are valid bits, or the first X1 most significant bits of the first TPMI field are zero and the rest are valid bits, wherein the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets, or For the terminal to determine the bit length of the N TPMI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, when the DCI indicates that the first TPMI field is used to indicate the precoding matrix for the first PUSCH resource transmission, it is determined that the first Y code points of the first TPMI field are valid bits, wherein the first PUSCH resource is related to the PUSCH transmission occasion of the SRS resource in the second SRS resource set, the second SRS resource set is another SRS resource set other than the first SRS resource set among the N SRS resource sets, The method according to claim 1, wherein the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

4. The DCI includes N SRI fields, and the N SRI fields are in one-to-one correspondence with N SRS resource sets corresponding to the terminal respectively, where N is an integer greater than or equal to 2. When the terminal determines the bit length of the target field in the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, The method according to claim 1, wherein the terminal determines the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH.

5. The bit length of the first SRI field related to the first SRS resource set is determined based on both the number of SRS resources in the first SRS resource set and the second transmission rank information, where the second transmission rank information is the maximum transmission rank information of the PUSCH related to only the first SRS resource set, and the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets. and / or The bit length of the SRI field related to the second SRS resource set is determined based on both the number of SRS resources in the second SRS resource set and the first information, where the second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets. Here, the first information is the maximum transmission rank information of the PUSCH related to only the first SRS resource set, the maximum transmission rank information of the PUSCH related to only the second SRS resource set, The method according to claim 4, including one of the maximum transmission rank information of the PUSCH related to the N SRS resource sets simultaneously.

6. When the terminal determines the bit length of the N SRI fields and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, When the DCI indicates that the first SRI field is used to indicate an SRS resource group used for the first PUSCH resource transmission, it includes determining that the least significant W bits of the first SRI field are valid bits, or that the top W1 bits of the first SRI field are zero and the rest are valid bits. Here, the first PUSCH resource is related to a PUSCH transmission occasion of an SRS resource in a second SRS resource set. The second SRS resource set is an SRS resource set other than the first SRS resource set among the N SRS resource sets. The method according to claim 4, wherein the first SRS resource set is the SRS resource set with the smallest identifier or the first SRS resource set among the N SRS resource sets.

7. The maximum transmission rank information of the PUSCH includes the maximum transmission rank information of the PUSCH related to only a single SRS resource set configured for the terminal, and the maximum transmission rank information of the PUSCH related to a plurality of SRS resource sets configured for the terminal simultaneously. The method according to claim 1.

8. Before the terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, the terminal receives first configuration information transmitted by a network-side device, where the first configuration information includes N maximum transmission rank information, the N maximum transmission rank information is related to the N SRS resource sets corresponding to the terminal one-to-one, and N is an integer greater than or equal to 2, and the method according to claim 7 further includes the terminal determining the maximum transmission rank information of the PUSCH based on the first configuration information.

9. The SRS resource set is an SRS resource set used for codebook transmission. Before the terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, The terminal receives second configuration information including one indication value for indicating maximum transmission rank information transmitted by a network-side device; The method further includes the terminal determining maximum transmission rank information of PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set; Or The SRS resource set is an SRS resource set used for non-codebook transmission; Before the terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, The terminal receives third configuration information including one indication value for indicating maximum transmission rank information transmitted by a network-side device; The method further includes the terminal determining maximum transmission rank information of PUSCH based on the indication value and the number of SRS resources in the SRS resource set; Or The SRS resource set is an SRS resource set used for non-codebook transmission; Before the terminal determines the bit length of the target field of the DCI and the valid bits in the target field based on the maximum transmission rank information of the PUSCH, The method according to claim 7, further comprising the terminal determining maximum transmission rank information of PUSCH based on the number of SRS resources in the SRS resource set.

10. A method for determining an uplink channel transmission rank, comprising: The terminal determines maximum transmission rank information of PUSCH, where the maximum transmission rank information of PUSCH includes: Maximum transmission rank information of PUSCH related to only a single SRS resource set configured for the terminal; and Maximum transmission rank information of PUSCH related to a plurality of SRS resource sets configured for the terminal simultaneously; Before the terminal determines the maximum transmission rank information of PUSCH, The method further includes the terminal receiving first configuration information transmitted by a network-side device, where the first configuration information includes N pieces of maximum transmission rank information, and the N pieces of maximum transmission rank information are in one-to-one correspondence with N SRS resource sets corresponding to the terminal respectively, and N is an integer greater than or equal to 2; The terminal determining the maximum transmission rank information of PUSCH is Determining that the maximum transmission rank information of the PUSCH related only to the target SRS resource set is a first numerical value, where the first numerical value is the maximum transmission rank configured by the network-side device for the target SRS resource set, and the target SRS resource set is any one of the N SRS resource sets, and / or, Determining that the maximum transmission rank information of the PUSCH related to M SRS resource sets simultaneously is a second numerical value or a third numerical value, where the second numerical value is the minimum value among the maximum transmission ranks configured by the network-side device for the M SRS resource sets, the third numerical value is configured by the network-side device, and M is an integer less than or equal to N. The uplink channel transmission rank determination method includes this.

11. The SRS resource set is an SRS resource set used for codebook transmission, Before the terminal determines the maximum transmission rank information of the PUSCH, The method further includes the terminal receiving second configuration information including one indication value for indicating the maximum transmission rank information, transmitted by the network-side device, When the terminal determines the maximum transmission rank information of the PUSCH, It includes the terminal determining the maximum transmission rank information of the PUSCH based on the indication value and the maximum number of SRS ports of the SRS resource set, or, The SRS resource set is an SRS resource set used for non-codebook transmission, Before the terminal determines the maximum transmission rank information of the PUSCH, The method further includes the terminal receiving third configuration information including one indication value for indicating the maximum transmission rank information, transmitted by the network-side device, When the terminal determines the maximum transmission rank information of the PUSCH, It includes the terminal determining the maximum transmission rank information of the PUSCH based on the indication value and the number of SRS resources in the SRS resource set, or, The SRS resource set is an SRS resource set used for non-codebook transmission. When the terminal determines the maximum transmission rank information of the PUSCH, The method according to claim 10, wherein the terminal determines maximum transmission rank information of PUSCH based on the number of SRS resources in the SRS resource set. **Claim 12** A terminal, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 9 are realized, or when the program or instruction is executed by the processor, the steps of the method according to claim 10 or 11 are realized. **Claim 13** A readable storage medium, having a program or instruction stored therein, wherein when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 9 are realized, or the steps of the method according to claim 10 or 11 are realized.

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