Information transmission method and communication apparatus

Abstract

An information transmission method and a communication apparatus. In an uplink only TRP scenario, when closed-loop power control for an SRS is decoupled from a PUSCH, in a DCI format 2_3 received by a terminal device, at least one TPC command field corresponding to the terminal device may indicate a power control adjustment state of the SRS (an SRS with the usage of antenna switching, and an SRS with the usage being a codebook or a non codebook) in one cell. Alternatively, when closed-loop power control for an SRS follows a PUSCH, a network device may send indication information to a terminal device to indicate the value of an index of a PUSCH power control adjustment state associated with an SRS resource set, and the terminal device may determine a power control adjustment state of the SRS on the basis of the indication information and a TPC field in a received DCI format 0_1 or 0_2. The transmission efficiency for an SRS is improved.

Description

Information transmission method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 8, 2024, with application number 202410178220.7 and application name “Method and Communication Device for Information Transmission”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to an information transmission method and a communication device. Background Art

[0003] The sounding reference signal (SRS) is used to detect channel information, select the precoding matrix or obtain precoding weights for uplink transmission, and obtain downlink precoding weights based on channel reciprocity. When a terminal device transmits an SRS to a network device (such as a base station), it needs to obtain the SRS's closed-loop power control adjustment value. Based on the SRS's closed-loop power control adjustment value, the terminal device can transmit the SRS to the base station at an appropriate power level, avoiding over- or under-transmission power.

[0004] Currently, four usages of SRS are defined: antenna switching (AS) SRS, codebook (CB) SRS, non-codebook (NCB) SRS, and beam management (BM) SRS.

[0005] With the advancement of wireless communication technology, a new type of base station has emerged, known as an uplink-only transmission point (TRP). This type of base station can receive uplink signals and data from terminal devices, but does not transmit downlink signals or data to them. In an TRP-only scenario, the physical location of the TRP and a traditional base station is different. The SRSs transmitted by a terminal device to different base stations (including both TRPs and traditional base stations) include: SRSs for antenna switching (AS), SRSs for codebook (CB), and SRSs for non-codebook (NCB). These SRSs for different purposes all belong to the same cell or carrier. Terminal devices must know the power control adjustment state (i.e., the closed-loop power control adjustment amount) of these SRSs to correctly transmit the SRSs, avoiding over-transmission or insufficient transmission power. Therefore, in the Uplink-only TRP scenario, how to notify the terminal device of the SRS power control adjustment state has become an urgent problem to be solved. Summary of the Invention

[0006] The present application provides a method and communication device for information transmission. In an Uplink only TRP scenario, when the closed-loop power control of SRS is separated from PUSCH, in the DCI format 2_3 received by the terminal device, at least one TPC instruction field corresponding to the terminal device can indicate the power control adjustment state of SRS in a cell or a carrier (SRS for antenna switching, SRS for codebook or non-codebook). Or, when the closed-loop power control of SRS follows PUSCH, the network device can send indication information to the terminal device to indicate the value of the index of the PUSCH power control adjustment state associated with the SRS resource set for antenna switching. The terminal device can determine the power control adjustment state of SRS based on the indication information and the TPC field in the received DCI format 0_1 ​​or 0_2, thereby improving the transmission efficiency of SRS.

[0007] In a first aspect, a method for information transmission is provided. The method may be performed by a first terminal device, or may be a chip, chip system, or processor that supports the first terminal device in implementing the method. The method includes: receiving a first DCI, the first DCI including at least one TPC instruction field, each TPC instruction field being used for an SRS power control adjustment state; determining, based on the at least one TPC instruction field corresponding to the first terminal device, a power control adjustment state of an SRS sent by the first terminal device to a network device, the SRS sent by the first terminal device including at least one of an SRS for antenna switching, an SRS for codebook use, or an SRS for non-codebook use. The SRS sent by the first terminal device belongs to the same carrier, the same cell, or the same BWP.

[0008] For example, the first DCI includes a DCI format of 2_3.

[0009] The information transmission method provided by the first aspect is that in the UL only TRP scenario, the terminal device sends and receives multiple "TPC command" fields in the first DCI that can be associated with or correspond to the SRS within a carrier, a cell or a BWP. For example, the SRS within a cell includes: an SRS used for antenna switching, an SRS used for a code book, or an SRS used for a non-code book. In other words, the multiple "TPC command" fields in the first DCI can indicate the power control adjustment state of the SRS within a cell, a carrier or a BWP, so that the terminal device can determine the power control adjustment state of the SRS in the same cell, the same carrier or the same BWP, and the terminal device can correctly send the SRS according to the power control adjustment state of the SRS, avoid over-transmission of the SRS power or insufficient transmission power, and improve the transmission efficiency of the SRS.

[0010] Exemplarily, each TPC command field is used for the power control adjustment state of the SRS; it can also be expressed as: each TPC command field is used to determine or indicate the power control adjustment state of the SRS.

[0011] For example, the first DCI includes a DCI format of 2_3.

[0012] In a possible implementation of the first aspect, the method further includes: receiving configuration information for configuring whether a power control adjustment state of an SRS resource set is consistent with a power control adjustment state of a PUSCH, the SRS resource set including at least one of an SRS resource set for antenna switching, an SRS resource set for codebook use, or an SRS resource set for non-codebook use; and determining, based on the configuration information, whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH. In this implementation, the terminal device can determine, based on the configuration information, whether the power control adjustment state of the SRS resource set for antenna switching is consistent with the power control adjustment state of the PUSCH, and whether the SRS resource set for codebook use or the SRS resource set for non-codebook use is consistent with the power control adjustment state of the PUSCH. This can thereby determine which SRS power control adjustment state is indicated by the multiple "TPC command" fields in the first DCI, thereby improving the accuracy and precision of the SRS power control adjustment state determined by the terminal device.

[0013] For example, the first terminal device can receive at least one indication information, that is, the configuration information can be implemented using at least one indication information, or in other words, the configuration information can include at least one indication information. Each indication information is associated with an SRS resource set, and different indication information is associated with different SRS resource sets. Each indication information is used to indicate whether the power control adjustment state of the SRS resource set associated with the indication information is consistent with the PUSCH power control adjustment state. In other words, each indication information can be used to indicate whether the power control adjustment state of the SRS resource set associated with the indication information follows the PUSCH power control adjustment state, that is, whether the power control adjustment state of the SRS resource set associated with the indication information follows the PUSCH power control adjustment state, or is independent (separated) from the PUSCH power control adjustment state. For example, the SRS resource set may include at least one of: an SRS resource set whose usage is antenna switching, an SRS resource set whose usage is codebook, and a non-codebook SRS resource set.

[0014] In a possible implementation of the first aspect, when the power control adjustment state of the SRS resource set for antenna switching and the power control adjustment state of the PUSCH are separated, and the power control adjustment state of the SRS resource set for codebook use or the SRS resource set for non-codebook use is consistent with the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the at least one TPC instruction field included in the block corresponding to the first terminal device is used for the power control adjustment state of the SRS for antenna switching sent by the first terminal device on the first carrier, or the at least one TPC instruction field corresponding to the first terminal device is used for the power control adjustment state of the SRS for antenna switching sent by the first terminal device. In this implementation, when the power control adjustment state of AS SRS and the power control adjustment state of PUSCH are separated, and the power control adjustment state of CB SRS or NCB SRS follows the power control adjustment state of PUSCH, it can be determined that the multiple "TPC command" fields in the first DCI all indicate the power control adjustment state of SRS for antenna switching, thereby improving the accuracy and precision of the power control adjustment state of SRS determined by the terminal device.

[0015] In a possible implementation of the first aspect, when the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for non-codebook is separated from the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the multiple TPC instruction fields included in the block corresponding to the first terminal device are respectively used for the following: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the power control adjustment state of the SRS used for antenna switching, sent by the first terminal device on the first carrier, or in other words, the multiple TPC instruction fields corresponding to the first terminal device are respectively used for the following: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the power control adjustment state of the SRS used for antenna switching, sent by the first terminal device. In this implementation, when the power control adjustment state of AS SRS is separated from the power control adjustment state of PUSCH, and the power control adjustment state of CB SRS or NCB SRS is also separated from the power control adjustment state of PUSCH, it is possible to determine the power control adjustment state of multiple "TPC command" fields in the first DCI: the power control adjustment state of SRS for codebook use or the power control adjustment state of SRS for non-codebook use, and the power control adjustment state of SRS for antenna switching, thereby improving the accuracy and precision of the power control adjustment state of SRS determined by the terminal device.

[0016] In one possible implementation of the first aspect, multiple TPC command fields included in a block corresponding to the first terminal device correspond to or are associated with different path loss offset values, respectively. These different path loss offset values ​​are used to determine uplink path loss between the first terminal device and the network device. In this implementation, different path loss offset values ​​correspond to SRSs of different uses. Based on the different path loss offset values ​​associated with or associated with the multiple TPC command fields, the terminal device can determine the SRS use to which the multiple TPC command fields correspond, thereby improving the accuracy and precision of the SRS power control adjustment state determined by the terminal device.

[0017] In a possible implementation of the first aspect, the multiple TPC command fields included in the block corresponding to the first terminal device respectively correspond to or are associated with SRSs of different purposes sent by the first terminal device. In this implementation, the terminal device can determine the SRS purposes to which the multiple TPC command fields correspond or are associated based on the SRSs of different purposes to which the multiple TPC command fields respectively correspond or are associated, thereby improving the accuracy and precision of the power control adjustment state of the SRS determined by the terminal device.

[0018] In a possible implementation of the first aspect, the multiple TPC instruction fields corresponding to the first terminal device respectively correspond to or are associated with different SRS resource sets sent by the first terminal device, and the SRS resource sets include: an SRS resource set for antenna switching, an SRS resource set for codebook use, or at least one of an SRS resource set for non-codebook use.

[0019] In a possible implementation of the first aspect, the method further includes: receiving indication information, the indication information being used to indicate whether the first DCI includes or does not include an SRS request field, or whether each block includes or does not include an SRS request field. In this implementation, the first terminal device can determine whether the first DCI includes an SRS request field, so that the first terminal device can determine the length of the first DCI, and can therefore correctly receive the first DCI, thereby improving the accuracy and efficiency of the first terminal device in receiving the first DCI.

[0020] For example, the indication information is carried in the "fieldTypeFormat2-3" field, or the indication information is carried in the first field in "SRS-TPC-CommandConfig".

[0021] In a second aspect, a method for information transmission is provided. The execution subject of the method can be a terminal device, or a chip, chip system, or processor that supports the terminal device to implement the method. The method includes: receiving first indication information, the first indication information is used to indicate: the value of the index of the power control adjustment state associated with the SRS resource set, different values ​​of the index of the power control adjustment state corresponding to different TPC fields in the second DCI; and determining the TPC field in the second DCI associated with the SRS resource set based on the value of the index of the power control adjustment state associated with the SRS resource set. Thereafter, the terminal device can determine the power control adjustment state of the SRS based on the TPC field in the second DCI associated with the SRS resource set.

[0022] For example, the SRS resource set includes at least one of an SRS resource set used for antenna switching, an SRS resource set used for a codebook, and an SRS resource set used for a non-codebook purpose.

[0023] The second aspect provides an information transmission method. In an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, a terminal device can receive indication information. The indication information can indicate which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field in the second DCI (for example, DCI format 0_1 ​​or 0_2) the power control adjustment state of the SRS resource set is associated with (follows). That is, the indication information can indicate which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field the power control adjustment state of the SRS is indicated by; in other words, the indication information can also indicate whether the closed-loop power control of the SRS follows the PUSCH closed-loop power control adjustment state with an index of 0 (l=0) or the PUSCH closed-loop power control adjustment state with an index of 1 (l=1). In this way, the terminal device can determine the power control adjustment state of the SRS, avoid over-power transmission or insufficient transmission power of the SRS, and improve the transmission efficiency of the SRS. For example, the SRS may include at least one of an SRS used for antenna switching, an SRS used for a codebook, and an SRS used for a non-codebook purpose.

[0024] For example, the second DCI includes a DCI format of 0_1 or 0_2, and the TPC field included in the second DCI includes a "TPC command for scheduled PUSCH" field and a "Second TPC command for scheduled PUSCH" field.

[0025] In a possible implementation manner of the second aspect, the indication information is carried in the "sri-PUSCH-PowerControl" field.

[0026] In a possible implementation manner of the second aspect, the indication information is carried in a PUSCH Pathloss Reference RS Update MAC CE.

[0027] According to a third aspect, a method for information transmission is provided. The execution subject of the method may be a terminal device, or a chip, a chip system, or a processor that supports the terminal device to implement the method. The method includes: receiving a third DCI, the third DCI including an indication field and at least one TPC instruction field, the indication field being used to indicate the index of the power control adjustment state of the SRS; determining, based on the indication field and the at least one TPC instruction field, the power control adjustment state of the SRS sent by the first terminal device to the network device, the SRS sent by the first terminal device including: at least one of an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

[0028] The third aspect provides a method for information transmission, in which the third DCI (for example, DCI format 2_3) received by the terminal device may include an indication field, and the indication field is used to indicate the index of the power control adjustment state of the SRS. In this case, the first terminal device can determine the power control adjustment state of the SRS sent by the first terminal device to the network device based on the indication field in the DCI format 2_3 and at least one TPC instruction. Avoid over-power transmission or insufficient transmission power of the SRS and improve the transmission efficiency of the SRS. The SRS sent by the first terminal device includes at least one of: an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

[0029] In a possible implementation of the third aspect, the first terminal may further receive indication information (also referred to as an indication), where the indication information is used to indicate: the value of the index of the power control adjustment state associated with SRS resource sets of different indexes; or the value of the index of the power control adjustment state associated with SRS resource sets of different uses. In other words, the second indication information is used to indicate whether the value of the SRS power control adjustment state index associated with SRS of different uses is 0 or 1. For example, the third DCI includes DCI format 2_3.

[0030] In a fourth aspect, a method for information transmission is provided, wherein the execution subject of the method may be a network device, or a chip, chip system, or processor that supports the network device to implement the method, or a logical node, logic module, or software that can implement all or part of the network device functions. The method includes: generating a first DCI, the first DCI including at least one TPC instruction field, each TPC instruction field being used for the power control adjustment state of the SRS; sending the first DCI to a first terminal device, wherein the at least one TPC instruction field corresponding to the first terminal device is used to indicate the closed-loop power control adjustment state of the SRS sent by the first terminal device network device, and the SRS sent by the first terminal device includes: at least one of an SRS for antenna switching, an SRS for codebook use, or an SRS for non-codebook use.

[0031] The fourth aspect provides a method for information transmission. In the UL only TRP scenario, multiple "TPC command" fields in the first DCI sent by the network device to the terminal device can be associated with or correspond to an SRS within a carrier, a cell, or a BWP. For example, the SRS within a cell includes: an SRS used for antenna switching, an SRS used for a codebook, or an SRS used for a non-codebook. In other words, the multiple "TPC command" fields in the first DCI can indicate the power control adjustment state of the SRS within a cell, a carrier, or a BWP, so that the terminal device can determine the power control adjustment state of the SRS in the same cell, the same carrier, or the same BWP according to the first DCI, and the terminal device can correctly send the SRS according to the power control adjustment state of the SRS, avoid over-transmission of the SRS power or insufficient transmission power, and improve the transmission efficiency of the SRS.

[0032] Exemplarily, each TPC command field is used for the power control adjustment state of the SRS; it can also be expressed as: each TPC command field is used to determine or indicate the power control adjustment state of the SRS.

[0033] In a possible implementation of the fourth aspect, the method further includes: sending configuration information to the first terminal device, the configuration information being used to configure: whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH, the SRS resource set including: at least one of an SRS resource set for antenna switching, an SRS resource set for a codebook, or an SRS resource set for a non-codebook purpose.

[0034] In a possible implementation of the fourth aspect, when the power control adjustment state of the SRS resource set for antenna switching and the power control adjustment state of the PUSCH are separated, and the power control adjustment state of the SRS resource set for codebook purpose or the SRS resource set for non-codebook purpose is consistent with the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the at least one TPC instruction field included in the block corresponding to the first terminal device indicates: the power control adjustment state of the SRS for antenna switching sent by the first terminal device on the first carrier, or the at least one TPC instruction field corresponding to the first terminal device is used for the power control adjustment state of the SRS for antenna switching sent by the first terminal device.

[0035] In a possible implementation of the fourth aspect, when the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for non-codebook is separated from the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively indicate: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the SRS used for antenna switching, sent by the first terminal device on the first carrier, or the multiple TPC instruction fields corresponding to the first terminal device are respectively used for the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the power control adjustment state of the SRS used for antenna switching, sent by the first terminal device.

[0036] In a possible implementation of the fourth aspect, the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively correspond to or are associated with different path loss bias values, and the different path loss bias values ​​are used to determine the uplink path loss between the first terminal device and the network device.

[0037] In a possible implementation manner of the fourth aspect, the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively correspond to or are associated with SRSs for different purposes sent by the first terminal device.

[0038] In a possible implementation of the fourth aspect, the method further includes: sending indication information to the first terminal device, where the indication information is used to indicate: whether the first DCI includes or does not include the SRS request field, or whether each block includes or does not include the SRS request field.

[0039] In a possible implementation manner of the fourth aspect, the indication information is carried in the "fieldTypeFormat2-3" field, or the indication information is carried in the first field in "SRS-TPC-CommandConfig".

[0040] In a possible implementation of the fourth aspect, the first DCI includes a DCI with format 2_3.

[0041] Among them, the beneficial effects of various possible implementation methods of the fourth aspect can refer to the description of the beneficial effects of various possible implementation methods corresponding to the above-mentioned first aspect, and will not be repeated here.

[0042] In a fifth aspect, a method for information transmission is provided, wherein the execution subject of the method may be a network device, or a chip, chip system, or processor that supports the network device to implement the method, or a logical node, logic module, or software that can implement all or part of the network device functions. The method includes: generating first indication information, the first indication information is used to indicate: the value of the index of the power control adjustment state associated with the SRS resource set, different values ​​of the index of the power control adjustment state correspond to different TPC fields in the second DCI, and different TPC fields in the second DCI respectively indicate the closed-loop power control adjustment state of the PUSCH; sending the first indication information to the terminal device. For example, the SRS resource set includes: at least one of: an SRS resource set used for antenna switching, an SRS resource set used for a codebook, or an SRS resource set used for a non-codebook.

[0043] The fifth aspect provides an information transmission method, in an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, and in the case where the usage (usage) of the SRS in a cell or carrier is antenna switching and the closed-loop power control follows PUSCH. The network device can send indication information to the terminal device, and the indication information can indicate: which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field in the second DCI (for example, DCI format 0_1 ​​or 0_2) the power control adjustment state of the SRS resource set is associated (followed) is associated (followed), that is, the indication information can indicate: which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field the power control adjustment state of the SRS is indicated by; in other words, the indication information can also indicate: whether the closed-loop power control of the SRS follows the PUSCH closed-loop power control adjustment state with an index of 0 (l=0) or the PUSCH closed-loop power control adjustment state with an index of 1 (l=1). In this way, the terminal device can determine the power control adjustment state of the SRS, avoid over-transmission or insufficient transmission power of the SRS, and improve the transmission efficiency of the SRS. For example, the SRS may include: an SRS used for antenna switching, an SRS used for codebook, or an SRS used for non-codebook.

[0044] In a possible implementation of the fifth aspect, the second DCI includes a DCI format of 0_1 or 0_2, and the TPC fields included in the second DCI include: a "TPC command for scheduled PUSCH" field and a "Second TPC command for scheduled PUSCH" field.

[0045] In a possible implementation manner of the fifth aspect, the indication information is carried in the "sri-PUSCH-PowerControl" field.

[0046] In a possible implementation manner of the fifth aspect, the indication information is carried in a PUSCH Pathloss Reference RS Update MAC CE.

[0047] Among them, the beneficial effects of various possible implementation methods of the fifth aspect can refer to the description of the beneficial effects of various possible implementation methods corresponding to the above-mentioned second aspect, and will not be repeated here.

[0048] In a sixth aspect, a method for information transmission is provided. The execution subject of the method can be a network device, or a chip, chip system, or processor that supports the network device to implement the method, or a logical node, logic module, or software that can implement all or part of the network device functions. The method includes: generating a third DCI, the third DCI including an indication field and at least one TPC instruction field, the indication field being used to indicate an index of the power control adjustment state of the SRS, the indication field and the at least one TPC instruction field being used by a first terminal device to determine the power control adjustment state of the SRS sent to the network device, the SRS sent by the first terminal device including: at least one of an SRS for antenna switching, an SRS for codebook use, or an SRS for non-codebook use; and sending the third DCI to the first terminal device.

[0049] The sixth aspect provides a method for information transmission, in which the third DCI (for example, DCI format 2_3) that the network device can send to the terminal device may include an indication field, and the indication field is used to indicate the index of the power control adjustment state of the SRS. In this case, the terminal device can determine the power control adjustment state of the SRS sent by the first terminal device to the network device based on the indication field in the DCI format 2_3 and at least one TPC instruction. Avoid over-power transmission or insufficient transmission power of the SRS and improve the transmission efficiency of the SRS. The SRS sent by the first terminal device includes at least one of: an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

[0050] In a possible implementation of aspect 6, the first terminal may further receive indication information (also referred to as second indication information), where the indication information is used to indicate: the value of the index of the power control adjustment state associated with SRS resource sets of different indexes; or the value of the index of the power control adjustment state associated with SRS resource sets of different uses. In other words, the second indication information is used to indicate whether the value of the SRS power control adjustment state index associated with SRSs of different uses is 0 or 1. For example, the third DCI includes DCI format 2_3.

[0051] In the seventh aspect, a communication device is provided, which includes: a module for executing each step in the above first aspect or any possible implementation of the first aspect (for example, including a processing module and an interface module), a module for executing each step in the above second aspect or any possible implementation of the second aspect (for example, including a processing module and an interface module), or a module for executing each step in the above third aspect or any possible implementation of the third aspect (for example, including a processing module and an interface module). The device can be a terminal device, or a chip, chip system, or processor in the terminal device.

[0052] In an eighth aspect, a communication device is provided, comprising at least one processor and memory, wherein the at least one processor is configured to execute: the method in the first aspect or any possible implementation of the first aspect, the method in the second aspect or any possible implementation of the second aspect, or the method in the third aspect or any possible implementation of the third aspect. The device may be a terminal device, or a chip, chip system, or processor in the terminal device.

[0053] In a ninth aspect, a communication device is provided, comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute: the method in the first aspect or any possible implementation of the first aspect, the method in the second aspect or any possible implementation of the second aspect, or the method in the third aspect or any possible implementation of the third aspect. The device may be a terminal device, or may be a chip, chip system, or processor in the terminal device.

[0054] In a tenth aspect, a communication device is provided, comprising: a module (for example, a processing module and an interface module) for executing each step in the fourth aspect or any possible implementation of the fourth aspect, or a method in the fifth aspect or any possible implementation of the fifth aspect, or a method in the sixth aspect or any possible implementation of the sixth aspect. The device can be a network device, a chip, a chip system, or a processor in a network device, or a logical node, a logical module, or software that can implement all or part of the functions of the network device.

[0055] In an eleventh aspect, a communication device is provided, comprising at least one processor and memory, wherein the at least one processor is configured to execute: the method in the fourth aspect or any possible implementation of the fourth aspect, or the method in the fifth aspect or any possible implementation of the fifth aspect, or the method in the sixth aspect or any possible implementation of the sixth aspect. The device may be a network device, a chip, a chip system, or a processor in a network device, or a logical node, a logical module, or software that can implement all or part of the functions of the network device.

[0056] In a twelfth aspect, a communication device is provided, comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute: the method in the fourth aspect or any possible implementation of the fourth aspect, or the method in the fifth aspect or any possible implementation of the fifth aspect, or the method in the sixth aspect or any possible implementation of the sixth aspect. The device may be a network device, a chip, a chip system, or a processor in a network device, or a logical node, a logical module, or software capable of implementing all or part of the functions of the network device.

[0057] In the thirteenth aspect, a terminal device is provided, which includes the communication device provided in the seventh aspect, or the terminal device includes the communication device provided in the eighth aspect, or the terminal device includes the communication device provided in the ninth aspect.

[0058] In a fourteenth aspect, a network device is provided, which includes the communication device provided in the tenth aspect, or the network device includes the communication device provided in the eleventh aspect, or the network device includes the communication device provided in the twelfth aspect.

[0059] In the fifteenth aspect, a computer program product is provided, which includes a computer program, and when the computer program is executed by a processor, it is used to execute: the method of any one of the above aspects from the first to the sixth aspect, or the method in any possible implementation of any one of the above aspects from the first to the sixth aspect.

[0060] In the sixteenth aspect, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed, it is used to execute: the method of any one of the above aspects from the first to the sixth aspect, or the method in any possible implementation of any one of the above aspects from the first to the sixth aspect.

[0061] In the seventeenth aspect, a chip is provided, which includes: a processor for calling and running a computer program from a memory, so that a communication device equipped with the chip executes: a method of any one of the above first to sixth aspects, or a method in any possible implementation of any one of the above first to sixth aspects.

[0062] In the eighteenth aspect, a communication system is provided, which includes: the terminal device provided in the above thirteenth aspect and the network device provided in the fourteenth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is an architectural diagram of an asymmetric downlink single TRP and uplink multiple TRP communication system provided in an embodiment of the present application.

[0064] Figure 2 is another example of an asymmetric downlink single TRP and uplink multiple TRP communication system provided by an embodiment of the present application.

[0065] FIG3 is a schematic interaction diagram of an information transmission method provided in an embodiment of the present application.

[0066] FIG4 is a schematic diagram of a first DCI structure provided in an embodiment of the present application.

[0067] FIG5 is a schematic diagram of another example of a first DCI structure provided in an embodiment of the present application.

[0068] FIG6 is a schematic diagram of another example of a first DCI structure provided in an embodiment of the present application.

[0069] FIG7 is a schematic diagram of another example of a first DCI structure provided in an embodiment of the present application.

[0070] FIG8 is a schematic diagram of another example of a first DCI structure provided in an embodiment of the present application.

[0071] FIG9 is a schematic diagram of another example of a first DCI structure provided in an embodiment of the present application.

[0072] Figure 10 is another example of an asymmetric downlink single TRP and uplink multiple TRP communication system provided by an embodiment of the present application.

[0073] FIG11 is a schematic interaction diagram of another example of an information transmission method provided in an embodiment of the present application.

[0074] FIG12 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0075] FIG13 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0076] FIG14 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0077] FIG15 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0078] Figure 16 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0079] Figure 17 is a schematic block diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] The technical solution in this application will be described below with reference to the accompanying drawings.

[0081] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0082] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0083] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

[0084] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0085] With the development of wireless communication technology, wireless access network equipment (taking base stations as an example) has evolved into many different forms. For example, a new type of base station can be called an uplink-only transmission point (Uplink-only TRP). An uplink-only transmission point only receives uplink signals and data sent by terminal devices, but does not send downlink signals and data to terminal devices. Uplink-only TRPs can serve as an additional supplement to traditional base stations to improve uplink coverage. Traditional base stations can both receive uplink signals and data sent by terminal devices and send downlink signals and data to terminal devices. Terminal devices can send uplink signals to Uplink-only TRPs and receive downlink signals from traditional base stations.

[0086] In existing standards, uplink power control (also known as uplink power control) when a terminal device transmits uplink signals requires obtaining the uplink path loss (PL) between the terminal device and the base station. For traditional base stations, the uplink and downlink path losses of a terminal device are equivalent. The terminal device can calculate the downlink path loss by measuring the reference signal receiving power (RSRP) of the downlink reference signal and combining it with the downlink reference signal transmit power notified by the base station. The uplink path loss is then calculated based on the reciprocity of uplink and downlink path losses.

[0087] However, in the Uplink-only TRP scenario, the physical locations of the Uplink-only TRP and the Downlink TRP (DL TRP) are different. Therefore, the downlink path loss measured by the terminal device is not equivalent to the actual uplink path loss. The Downlink TRP can be understood as a traditional base station. The Downlink TRP can receive uplink signals and data from the terminal device and can also send downlink signals and data to the terminal device.

[0088] A possible solution is to use the downlink TRP or the traditional base station to notify the terminal device of the uplink path loss PL. UL and downlink path loss PL DL The bias value Δ RSRP , the terminal device is based on Δ RSRP and the measured downlink path loss PL DL Get the uplink path loss used for uplink power control. For example, PL UL =PL DL +Δ RSRP , or, PL UL =PL DL -Δ RSRP , or, possibly PL UL =Δ RSRP· PL DL .

[0089] Existing protocols define four usages of SRS: antenna switching (AS), codebook (CB), non-codebook (NCB), and beam management (BM). The non-codebook SRS (NCB SRS) is used for non-codebook uplink transmission, the codebook SRS (CB SRS) is used for precoding codebook-based uplink transmission, and the antenna switching SRS (AS SRS) is used by network devices to acquire downlink channels based on channel reciprocity. SRSs with different usages correspond to different SRS resource sets or SRS resources. A network device (eg, a DL TRP or a traditional base station) may configure an SRS resource set or SRS resources for a terminal device through radio resource control (RRC) signaling.

[0090] The terminal device transmits SRS in the uplink BWPb of cell c and carrier f using the SRS power control adjustment state with index l. The transmission power of SRS at transmission opportunity i can be determined by the following formula (1): where BWP is the bandwidth part (BWP), and a component carrier (CC) can be composed of one or more BWPs.

[0091] In formula (1), P SRS,b,f,c (i,q s ,l) represents the transmission power of SRS at transmission opportunity i, in dBm, P CMAX,f,c (i) represents the maximum transmit power configured by the terminal device, P O_SRS,b,f,c (q s ) represents the expected received power configured by the network side for the terminal device, μ is the subcarrier spacing, represents the bandwidth of SRS, α SRS,b,f,c (q s ) represents the path loss factor, PL b,f,c (q s ) represents the downlink reference signal q measured by the terminal device s Path loss, in dB, h b,f,c (i, l) represents the power control adjustment state.

[0092] The network device uses RRC parameters to configure the SRS resource set for the terminal device. The RRC parameters include the SRS power control adjustment state parameter (srs-PowerControlAdjustmentStates), which determines whether the closed-loop power control (or closed-loop power control) of the SRS resource set is separated from the physical uplink shared channel (PUSCH). If the value of "srs-PowerControlAdjustmentStates" is "sameAsFci1" or "sameAsFci2", the power control adjustment state of the SRS follows one of the two power control adjustment states of the PUSCH. b,f,c (i,l)=f b,f,c (i,l),f b,f,c (i, l) is the PUSCH power control adjustment state, that is, the closed-loop power control adjustment amount (i.e., power control adjustment state) of SRS and PUSCH is the same, l represents the index of the PUSCH power control adjustment state, and the value can be 0 or 1; if the value of "srs-PowerControlAdjustmentStates" is "separateClosedLoop", then the power control adjustment state of SRS is separated from PUSCH, that is, the power control adjustment states of SRS and PUSCH are independent.

[0093] For the case where SRS closed-loop power control is independent of PUSCH (i.e., the power control adjustment states of SRS and PUSCH are inconsistent), the closed-loop power control adjustment state of SRS needs to be indicated to the terminal device through downlink control information (DCI) in format 2_3, i.e., indicated to the terminal device through DCI format 2_3.

[0094] At present, for cells configured with PUSCH, if the SRS closed-loop power control of the terminal device is separated from the PUSCH (independent), then the terminal device in the cell where the terminal device is located has one and only one set of SRS closed-loop power control, that is, if the terminal device is configured with multiple SRS resource sets with closed-loop power control (power control adjustment state) separated from the PUSCH, then the power control adjustment states of these SRS resource sets are the same. For cells that are not configured with PUSCH, the closed-loop power control of SRS is naturally independent. At this time, the "srs-PowerControlAdjustmentStates" parameter in the RRC parameters is not effective. The "srs-TPC-PDCCH-Group" field in the SRS carrier switching (SRS-CarrierSwitching) parameter in the terminal device-level RRC parameters indicates that the DCI format 2_3 (DCI format 2_3) is type A (typeA) or type B (typeB).

[0095] DCI format 2_3 is scrambled by the transmit power control-SRS-radio network temporary identity (TPC-SRS-RNTI). DCI format 2_3 can carry (including) SRS TPC commands (TPC command) of one or more terminal devices, and each TPC command (TPC command) can indicate the power control adjustment state of SRS. DCI format 2_3 contains one or more blocks, and each terminal device can correspond to one or more blocks. The terminal device can determine the starting bit position of its corresponding block through the high-level parameter "startingBitOfFormat2-3" or "startingBitOfFormat2-3SUL". In other words, DCI format 2_3 indicates TPC instructions for one or more groups of SRS of one or more user equipment (UE).

[0096] If the high-level parameter "srs-TPC-PDCCH-Group" indicates type A or SRS closed-loop power control is separated from PUSCH, one terminal device corresponds to one block, and one block contains an optional "SRS request" field (domain) and at least one "TPC command" field (domain).

[0097] If the high-level parameter "srs-TPC-PDCCH-Group" indicates type B or the closed-loop power control of SRS is separated from PUSCH, a terminal device corresponds to one or more blocks, and a block contains an optional "SRS request" field and a "TPC command" field.

[0098] Currently, the "srs-TPC-PDCCH-Group" field indicates type A or type B only applies to SRS carrier switching (SRS-Carrier Switching) scenarios. The multiple TPC commands corresponding to a terminal device need to correspond to different cells or carriers. In other words, when the terminal device's SRS closed-loop power control is independent of PUSCH, the multiple "TPC commands" of a terminal device indicate the power control adjustment state of SRS in different carriers or different cells, that is, it is only applicable to multi-carrier or multi-cell scenarios.

[0099] After the emergence of Uplink-only TRP, a variety of different base station deployment forms have also emerged. A new form of base station deployment can be called asymmetric downlink single TRP (single TRP, S-TRP) and uplink multiple TRP (Uplink multiple TRP, UL M-TRP), or it can also be expressed as "Asymmetric downlink S-TRP / UL M-TRP", which can additionally improve uplink coverage on the basis of traditional base stations.

[0100] For example, Figure 1 illustrates a possible "Asymmetric downlink S-TRP / UL M-TRP" scenario. As shown in Figure 1 , a terminal device can send CB SRS1 or NCB SRS1 to UL-only TRP1. CB SRS1 uses SRS resource set 1 with codebook usage, while NCB SRS1 uses SRS resource set 1 with non-codebook usage. The terminal device can also send PUSCH to UL-only TRP1. The terminal device can send CB SRS2 or NCB SRS2 to UL-only TRP2. CB SRS2 uses SRS resource set 2 with codebook usage, while NCB SRS2 uses SRS resource set 2 with non-codebook usage. At the same time, the terminal device also needs to send AS SRS to the DL TRP so that the DL TRP can obtain downlink channel information. Based on this downlink channel information, the DL TRP can then send a downlink reference signal or downlink data to the terminal device. Since the DL TRP and UL-only TRP are physically located in different locations, the closed-loop power control of the AS SRS sent by the terminal device to the DL TRP needs to be separated or independent from the PUSCH sent to the UL-only TRP. At the same time, in the scenario shown in Figure 1, the closed-loop power control of the CB SRS or NCB SRS transmitted by the terminal device to the UL-only TRP also needs to be separated or independent from the PUSCH. Because in this scenario, the uplink channel between the terminal device and UL-only TRP 1 is different from the uplink channel between the terminal device and UL-only TRP 2, the terminal device needs to send CB SRS or NCB SRS to UL-only TRP 1 and UL-only TRP 2 respectively so that the network side can judge the quality of the two channels. After that, the network side can implicitly indicate to the terminal device through the SRS resource set indicator field in the DCI to send uplink data PUSCH to UL-only TRP 1 or UL-only TRP 2.

[0101] It should be understood that in the scenario shown in Figure 1, UL-only TRP1, UL-only TRP2, and DL TRP belong to the same carrier, the same cell, or the same BWP, or in other words, CB SRS1 or NCB SRS1, AS SRS, CB SRS2, or NCB SRS2 belong to the same carrier, the same cell, or the same BWP. In addition, in the example shown in Figure 1, the terminal device will only send PUSCH to one of the UL-only TRP1 and UL-only TRP2 UL-only TRPs, and the terminal device will not send PUSCH to the DL TRP.

[0102] In the scenario shown in Figure 1, since the closed-loop power control of AS SRS needs to be separated or independent from PUSCH, the terminal device needs to obtain the power control adjustment state of AS SRS in order to send AS SRS to DL TRP with appropriate power to avoid over-power or insufficient transmission power.

[0103] Furthermore, since the closed-loop power control of CB SRS or NCB SRS also needs to be separated or independent from PUSCH, the terminal device also needs to obtain the power control adjustment state of CB SRS or NCB SRS in order to send CB SRS or NCB SRS to UL only TRP with appropriate power to avoid over-power or insufficient transmission power.

[0104] However, the current method in which the base station sends multiple "TPC commands" to the terminal device through DCI format 2_3 and notifies the terminal device of the power control adjustment state of the SRS is only applicable to the scenario of carrier switching. Different TPC commands are associated with different cells, different carriers or different BWPs through high-layer signaling. For example, for type A, different TPC commands correspond to the uplink carrier (UL carrier) provided in the high-layer parameter "cc-IndexInOneCC-Set", and for type B, different blocks correspond to different uplink carriers (UL carrier). In other words, different "TPC commands" correspond to or are associated with different carriers, different cells or different BWPs, that is, multiple "TPC commands" of a terminal device respectively indicate the power control adjustment states of the SRS corresponding to different carriers, different cells or different BWPs.

[0105] However, in the UL only TRP scenario, for example, in the scenario shown in Figure 1, CB SRS1 or NCB SRS1, AS SRS, CB SRS2 or NCB SRS2 belong to the same carrier, the same cell or the same BWP, and the method of notifying the terminal device of the power control adjustment state of SRS through multiple "TPC command" fields corresponding to the terminal device in DCI format 2_3 is not applicable to the UL only TRP scenario. Therefore, in the UL only TRP scenario, when the closed-loop power control and PUSCH of AS SRS are separated, and when the closed-loop power control and PUSCH of CB SRS or NCB SRS are separated, a method is needed to notify the UE of the power control adjustment state of AS SRS and the power control adjustment state of CB SRS or NCB SRS, so that the UE can correctly send AS SRS, and CB SRS or NCB SRS, thereby improving communication efficiency.

[0106] In view of this, the present application provides a method and communication device for information transmission, in which, when the closed-loop power control and PUSCH of different SRSs in a cell are separated, the multiple "TPC command" fields in the first DCI (for example, DCI format 2_3) sent by the network device to the terminal device can be associated with or correspond to the SRS in a carrier, a cell or a BWP. For example, the SRS in a cell includes: AS SRS, CB SRS, or NCB SRS, etc. In other words, the multiple "TPC command" fields in the first DCI can indicate the power control adjustment state of the SRS in a cell, a carrier or a BWP, so that the terminal device can determine the power control adjustment state of the SRS in the same cell, the same carrier or the same BWP, and the terminal device can correctly send AS SRS, CB SRS or NCB SRS according to the power control adjustment state of the SRS, avoid over-transmission of SRS power or insufficient transmission power, and improve the transmission efficiency of SRS.

[0107] Exemplarily, the method provided in the present application can be applied in scenarios where asymmetric downlink single TRP and uplink multiple TRP are possible, or in other words, the embodiment of the present application can be applied in a UL only TRP scenario where the closed-loop power control of SRS and PUSCH in a cell are separated. For example, it can be applied in the UL only TRP scenario shown in Figure 1.

[0108] In the embodiments of the present application, the asymmetric downlink single TRP and uplink multiple TRP (Asymmetric downlink S-TRP / UL M-TRP) scenario and the UL only TRP scenario can be understood as the same scenario, and the two expressions can be interchangeable.

[0109] FIG2 shows another schematic diagram of a communication system applicable to an embodiment of the present application. As shown in FIG2 , the communication system includes: a terminal device, a UL-only TRP1, and a DL TRP. The terminal device can transmit uplink signals to the UL-only TRP1. For example, as shown in FIG2 , the terminal device can send a CB SRS1 or an NCB SRS1 to the UL-only TRP1, and can also send a PUSCH to the UL-only TRP1. At the same time, the terminal device also needs to send an AS SRS to the DL TRP so that the DL TRP can obtain downlink channel information. The DL TRP can send a downlink reference signal or downlink data to the terminal device based on the downlink channel information. In addition, the terminal device does not send a PUSCH to the DL TRP. Because the DL TRP and the UL-only TRP1 are physically located in different locations, the closed-loop power control of the AS SRS sent by the terminal device to the DL TRP needs to be separate or independent from the PUSCH sent by the terminal device to the UL-only TRP1. At the same time, in this scenario, the closed-loop power control of the CB SRS or NCB SRS transmitted by the terminal device to the UL-only TRP1 also needs to be separate or independent from the PUSCH sent by the terminal device to the UL-only TRP1.

[0110] It should be understood that in the scenario shown in FIG. 2 , UL only TRP1 and DL TRP belong to the same cell or carrier, or in other words, CB SRS1 or NCB SRS1 and AS SRS belong to the same cell, the same carrier or the same BWP.

[0111] Exemplarily, the scenario or communication system shown in Figure 1 or Figure 2 can be a cellular system related to the Third Generation Partnership Project (3GPP), for example, a Long Term Evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a 4G, 5G mobile communication system (including independent networking and non-independent networking), a New Radio (NR), a future-oriented evolution system (such as a 6G mobile communication system), a cloud radio access network (CRAN), or an open access network (open RAN, O-RAN or ORAN) system, or a communication system that integrates two or more of the above systems. The embodiments of the present application are not limited here.

[0112] For ease of description, in the embodiments of this application, a DL TRP or a traditional base station is referred to as a first network device, and an Uplink-only TRP is referred to as a second network device. If the network device is the first network device, it can both receive uplink signals and uplink data sent by a terminal device and send downlink signals and downlink data to the terminal device. If the network device is the second network device, it only receives uplink signals and uplink data sent by a terminal device and does not send downlink signals and downlink data to the terminal device.

[0113] Network devices (including the first network device and the second network device mentioned above), sometimes also referred to as access network devices, RAN nodes, network devices, RAN entities or access nodes, etc., constitute part of the communication system to help terminals achieve wireless access.

[0114] In one possible scenario, a network device can be any device with wireless transceiver capabilities. Examples include: traditional macro base stations (evolved node B, eNBs) in traditional Universal Mobile Telecommunications Systems (UMTS) and LTE communication systems; micro base stations (eNBs) in heterogeneous networks (HetNets); baseband processing units (BBUs) and remote radio units (RRUs) in distributed base station scenarios; baseband pool (BBU pool) RRUs in cloud radio access networks (CRANs); gNBs in future wireless communication systems, 3GPP-derived base stations, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, etc. For example, a base station can be: a macro base station, a micro base station, a pico base station, a small cell, a relay station, or a balloon station.

[0115] In another possible scenario, the network device may be a base station, an evolved NodeB (eNodeB), an access point (AP), a TRP, a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, etc. Optionally, the network device may also be a relay node or a host node, or a wireless controller in a CRAN scenario. Optionally, the network device may also be an access network device in V2X technology, such as a road side unit (RSU). All or part of the functions of the network device in this application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The network device in this application may also be a logical node, logical module or software that can implement all or part of the functions of a wireless access network device.

[0116] In NR technology, a network device (e.g., gNB) can consist of a gNB Centralized Unit (CU) and one or more gNB Distributed Units (DU). The gNB-CU and gNB-DU are different logical nodes and can be deployed on different physical devices or on the same physical device.

[0117] Considering a separate control plane and user plane architecture, the gNB-CU can be further divided into a Central Unit-Control Plane (CU-CP) entity (also known as a CU-CP node) and a Central Unit-User Plane (CU-UP) entity (also known as a CU-UP node). The gNB-CU-CP is a control plane entity responsible for signaling control, while the gNB-CU-UP is a user plane entity responsible for terminating terminal data. The gNB-CU-CP and gNB-CU-UP are connected via the E1 interface, the gNB-CU-CP and gNB-DU are connected via the F1-C interface, and the gNB-CU-UP and gNB-DU are connected via the F1-U interface.

[0118] In one possible scenario, for example, the network device may be the aforementioned CU, DU, CU-CP, or CU-UP. The CU and DU may be configured separately or included in the same network element, such as a BBU. The RU may be included in a radio frequency device or radio frequency unit, such as an RRU, an active antenna unit (AAU), or a remote radio head (RRH).

[0119] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0120] In the embodiments of the present application, the terminal device may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0121] For example, in the system shown in Figure 1 or Figure 2, when the closed-loop power control and PUSCH of different SRS in a cell are separated, the terminal device can use the method provided in this application to determine the power control adjustment state of different SRS in a cell. Different SRS in a cell may include: AS SRS, CB SRS, NCB SRS, etc.

[0122] It should be understood that the communication system shown in Figure 1 or Figure 2 is merely exemplary and should not impose any limitations on the communication system applicable to the embodiments of the present application. For example, the communication system shown in Figure 1 or Figure 2 may further include more UL-only TRP or DL ​​TRP nodes, and the UL-only TRP, DL TRP or terminal device included in the communication system shown in Figure 1 or Figure 2 may be the various forms of network devices or terminal devices described above. The embodiments of the present application are no longer shown one by one in the figures.

[0123] The following describes the information transmission method provided by this application with reference to specific examples.

[0124] It should be understood that in the embodiments of the present application, the method is described by taking a network device and a terminal device as the execution subjects of the method as an example. As an example and not a limitation, the terminal device in the present application may also be a chip, a chip system, or a processor that supports the terminal device to implement the method. The network device in the present application may also be a chip, a chip system, or a processor that supports the network device to implement the method, or may also be a logical node, a logical module, or software that can implement all or part of the network device functions. The embodiments of the present application are not limited here.

[0125] It should be understood that in this application, "SRS resource set used for antenna switching" can also be expressed as "AS SRS resource set". "SRS used for antenna switching" can also be expressed as "AS SRS", and the two expressions are interchangeable.

[0126] The “SRS resource set whose usage is codebook” can also be expressed as “CB SRS resource set”. The “SRS whose usage is codebook” can also be expressed as “CB SRS”, and the two expressions can be interchangeable.

[0127] "SRS resource set with non-codebook usage" can also be expressed as "NCB SRS resource set". "SRS with non-codebook usage" can also be expressed as "NCB SRS", and the two expressions can be used interchangeably.

[0128] Optionally, in the embodiment of the present application, the power control adjustment state may also be referred to as a closed-loop power control adjustment state or a closed-loop power control adjustment amount.

[0129] The method provided by the present application is described in detail below in conjunction with Figure 3. Figure 3 is a schematic flowchart of a method for information transmission in an embodiment of the present application. This method 300 can be applied to the communication scenarios or communication architectures shown in Figure 1 or Figure 2. Of course, it can also be applied to other communication scenarios or communication architectures with the above-mentioned problems. The embodiments of the present application are not limited here.

[0130] As shown in Fig. 3 , the method 300 shown in Fig. 3 may include S310 to S320. Each step in the method 300 will be described in detail below with reference to Fig. 3 .

[0131] S310: A first network device sends a first DCI to a first terminal device. The first DCI includes at least one block. Each terminal device corresponds to one or more blocks, and each block includes at least one TPC command field. Different TPC command fields indicate power control adjustment states of SRSs sent by the terminal device to different network devices.

[0132] Correspondingly, the first terminal device receives the first DCI.

[0133] Optionally, in an embodiment of the present application, different TPC command fields indicate the power control adjustment state of the SRS sent by the terminal device to different network devices, which can also be expressed as: different TPC command fields are used for the power control adjustment state of the SRS, each TPC command field is used for the power control adjustment state of the SRS, or different TPC command fields are used to indicate (determine) the power control adjustment state of the SRS. This embodiment of the present application does not limit this.

[0134] It should be understood that different network devices include two types: a first network device and a second network device. The first network device is a traditional network device. The first network device can receive uplink signals and uplink data sent by the terminal device, and can also send downlink signals and downlink data to the terminal device. For example, the first network device may include a DL TRP or a traditional base station. In the example of the present application, the second network device only receives uplink signals and uplink data sent by the terminal device, and does not send downlink signals and downlink data to the terminal device. For example, the second network device can be a UL only TRP.

[0135] It can be understood that the purpose of the SRS sent by the terminal device (for example, the first terminal device) to the first network device and the second network device is different. Among them, the purpose of the SRS sent by the terminal device to the first network device is to measure the downlink channel and obtain the precoding weight of the downlink transmission, that is, the AS SRS is the SRS sent by the terminal device to the first network device; the purpose of the SRS sent by the terminal device to the second network device is to measure the uplink channel, that is, the CB SRS or NCB SRS is the SRS sent by the terminal device to the second network device. The terminal device can also send PUSCH to the second network device.

[0136] For example, in conjunction with the scenario or communication system shown in Figure 1, the first network device may be a DL TRP, and the second network device may include UL-only TRP1 and UL-only TRP2. AS SRS is an uplink reference signal sent by the terminal device to the DL TRP, CB SRS1 or NCB SRS1 is an uplink reference signal sent by the terminal device to UL-only TRP1, and CB SRS2 or NCB SRS2 is an uplink reference signal sent by the terminal device to UL-only TRP2. The terminal device can also send PUSCH to UL-only TRP1 or UL-only TRP2.

[0137] For example, in conjunction with the scenario or communication system shown in Figure 2, the first network device may be a DL TRP, and the second network device may be UL-only TRP1. The AS SRS is an uplink reference signal sent by the terminal device to the DL TRP, and the CB SRS or NCB SRS is an uplink reference signal sent by the terminal device to the UL-only TRP1. The terminal device may also send a PUSCH to the UL-only TRP1.

[0138] Optionally, as a possible implementation, the first DCI may be DCI format 2_3. Of course, in other implementations of the present application, the first DCI may also have other names, as long as the first DCI includes at least one "TPC command" field, and different TPC command fields indicate the power control adjustment state of the SRS. The embodiments of the present application do not limit the specific format and name of the first DCI.

[0139] S320. When the closed-loop power control and PUSCH of the AS SRS sent by the first terminal device are separated, the first terminal device determines the power control adjustment state of the SRS sent by the first terminal device to different network devices based on at least one TPC command field corresponding to the first terminal device. The at least one TPC command field corresponding to the first terminal device belongs to the same cell, the same carrier or the same BWP. The SRS sent by the first terminal device to different network devices includes: CB SRS or NCB SRS, and AS SRS.

[0140] It should be understood that in the embodiment of the present application, the CB SRS or NCB SRS and AS SRS sent by the first terminal device to different network devices belong to the same cell, the same carrier or the same BWP.

[0141] In the case where the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH, whether the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows the PUSCH can be configured by the network side.

[0142] For example, whether the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows PUSCH is configured by the network side, which may include: the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows PUSCH; or, the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device is separated from PUSCH.

[0143] Optionally, as a possible implementation method, if the first terminal device is in a UL only TRP scenario and the first terminal device does not send PUSCH to the DL TRP, it can be determined that the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH, and whether the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows the PUSCH is configured by the network side.

[0144] For example, if the first terminal device is in a UL only TRP scenario and the first terminal device does not send PUSCH to the DL TRP, the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH, and the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows the PUSCH.

[0145] For another example, if the first terminal device is in a UL only TRP scenario and the first terminal device does not send PUSCH to the DL TRP, the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH, and the closed-loop power of the CB SRS or NCB SRS sent by the first terminal device is also separated from the PUSCH.

[0146] Optionally, as another possible implementation, the first terminal device may also receive Δ RSRP Determine whether the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH. RSRP Indicates the uplink path loss PL UL and downlink path loss PL DL The offset value of Δ RSRP Used to determine the uplink path loss between the first terminal device and the network device. RSRP The first network device may notify the first terminal device, for example, via RRC signaling or other signaling.

[0147] If the first terminal device receives or the first network device indicates Δ RSRP , the first terminal device determines that the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH. In this case, whether the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows the PUSCH can be configured by the network side. If the first terminal device does not receive or the first network device does not indicate Δ RSRP , the first terminal device determines that the closed-loop power control of the AS SRS sent by the first terminal device follows PUSCH.

[0148] It should be understood that, in the embodiment of the present application, the first terminal device may receive or the first network device may indicate one or more Δ RSRP .

[0149] Optional, different Δ RSRP Corresponding to the offset values ​​of the uplink path loss and downlink path loss between the first terminal device and different network devices, different Δ RSRP It can be used for power control when the first terminal device sends SRS to different network devices.

[0150] For example, different Δ RSRP The offset values ​​of the uplink path loss and downlink path loss corresponding to the first terminal device and different UL only TRPs, different Δ RSRP It can be used for power control when the first terminal device sends CB SRS or NCB SRS to different UL only TRPs.

[0151] For example, in conjunction with the example shown in FIG1 , the first network device (ie, DL TRP) may indicate two Δ RSRP , respectively Δ RSRP1 and Δ RSRP2 , Δ RSRP1 Indicates the offset value of the uplink path loss and downlink path loss corresponding to the power control of CB SRS1 or NCB SRS1, or in other words, Δ RSRP1 Indicates: the uplink path loss between the terminal device and UL only TRP1, and the offset value of the downlink path loss between the terminal device and DL TRP. RSRP2 Indicates the offset value of the uplink path loss and downlink path loss corresponding to the power control of CB SRS2 or NCB SRS2, or in other words, Δ RSRP2 Indicates: the uplink path loss between the terminal device and UL only TRP2, and the downlink path loss between the terminal device and DL TRP. Different Δ RSRP The path loss offset value of the CB SRS or NCB SRS between the corresponding (or associated) terminal device and different UL only TRPs.

[0152] For another example, in the scenario shown in FIG2 , the first network device (ie, DL TRP) may indicate a Δ RSRP1 , Δ RSRP1 Indicates the offset value of the uplink path loss and downlink path loss corresponding to the power control of CB SRS1 or NCB SRS1, or in other words, Δ RSRP1Indicates the uplink path loss between the terminal device and UL only TRP1, and the offset value of the downlink path loss between the terminal device and DL TRP.

[0153] Optionally, as a possible implementation, for DL ​​TRP, since its uplink path loss and downlink path loss are the same, it is not necessary to indicate an offset value for the uplink path loss and downlink path loss between the terminal device and DL TRP, that is, it is not necessary to indicate Δ for AS SRS or DL ​​TRP. RSRP .

[0154] Optionally, as another possible implementation, for DL ​​TRP, the uplink path loss and downlink path loss between the terminal device and DL TRP may also be indicated by an offset value, that is, the AS SRS or DL ​​TRP indication Δ RSRP , in this case, Δ RSRP The value is 0, that is, the Δ corresponding to AS SRS or DL ​​TRP RSRP is 0.

[0155] It should also be understood that if the first terminal device receives at least one Δ RSRP Alternatively, the first network device indicates at least one Δ RSRP , the first terminal device can also determine that it is in a UL only TRP scenario.

[0156] That is, when the first terminal device determines that it is in the UL only TRP scenario, and the first terminal device does not send a PUSCH to the DL TRP; and / or the first terminal device receives at least one Δ RSRP In this case, the closed-loop power control of AS SRS and PUSCH can be separated by default (eg, protocol pre-defined or pre-configured), and whether the closed-loop power control of CB SRS or NCB SRS follows PUSCH is configured by the network side.

[0157] Optionally, in some possible embodiments, the first network device may further send configuration information to the first terminal device, and the configuration information is used to configure: whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH. The SRS resource set includes: at least one of an SRS resource set for antenna switching, an SRS resource set for codebook, or an SRS resource set for non-codebook. In other words, the configuration information is used to configure: whether the power control adjustment state of the SRS resource set for antenna switching is consistent with the PUSCH power control adjustment state, and whether the power control adjustment state of the SRS resource set for codebook or non-codebook is consistent with the PUSCH power control adjustment state.

[0158] For example, as a possible implementation manner, the first network device may send at least one indication information to the first terminal device, that is, the configuration information may be implemented using at least one indication information, or in other words, the configuration information may include at least one indication information.

[0159] Each indication information is associated with an SRS resource set, and different indication information is associated with different SRS resource sets. Each indication information is used to indicate whether the power control adjustment state of the SRS resource set associated with the indication information is consistent with the PUSCH power control adjustment state. In other words, each indication information can be used to indicate whether the power control adjustment state of the SRS resource set associated with the indication information follows the PUSCH power control adjustment state, that is, whether the power control adjustment state of the SRS resource set associated with the indication information follows the PUSCH power control adjustment state or is independent (separate) from the PUSCH power control adjustment state.

[0160] For example, the SRS resource set may include at least one of an SRS resource set for antenna switching, an SRS resource set for codebook, and a non-codebook SRS resource set. The first network device may send three different indication messages to the first terminal device, indicating respectively whether the power control adjustment state of the SRS resource set for antenna switching is consistent with the PUSCH power control adjustment state, whether the power control adjustment state of the SRS resource set for codebook is consistent with the PUSCH power control adjustment state, and whether the power control adjustment state of the SRS resource set for non-codebook is consistent with the PUSCH power control adjustment state.

[0161] After receiving the indication information, the first terminal device can determine whether the power control adjustment states corresponding to the SRS resource set with usage as antenna switching, the SRS resource set with usage as codebook, and the SRS resource set with usage as non-codebook are consistent with the PUSCH power control adjustment state.

[0162] If the indication information indicates that the power control adjustment state of the SRS resource set whose usage is antenna switching is inconsistent with the PUSCH power control adjustment state (ie, separated or independent), the first terminal device can determine that the closed-loop power control of AS SRS and PUSCH are separated (independent).

[0163] If the indication information indicates that the power control adjustment state corresponding to the SRS resource set with codebook or non-codebook usage is consistent with the PUSCH power control adjustment state, the first terminal device can determine that the closed-loop power control of CB SRS or NCB SRS follows PUSCH.

[0164] If the indication information indicates that the power control adjustment state corresponding to the SRS resource set with usage as codebook or non-codebook is inconsistent with the PUSCH power control adjustment state (i.e., separated or independent), the first terminal device can determine that the closed-loop power of CB SRS or NCB SRS is separated from PUSCH.

[0165] It should also be understood that, in the present application, “the power control adjustment state corresponding to the SRS resource sets for codebook or non-codebook usage is consistent with the PUSCH power control adjustment state” can also be expressed as “the closed-loop power control of CB SRS or NCB SRS follows PUSCH”. “The power control adjustment state corresponding to the SRS resource sets for codebook or non-codebook usage is inconsistent with the PUSCH power control adjustment state” can also be expressed as “the closed-loop power control of CB SRS or NCB SRS is separated or independent from PUSCH”. “The power control adjustment state of the SRS resource set for antenna switching usage is inconsistent with the PUSCH power control adjustment state (i.e., separated or independent)” can also be expressed as “the closed-loop power control of AS SRS is separated (independent) from PUSCH”.

[0166] In the following example, the first DCI may be DCI format 2_3 as an example for description.

[0167] The first DCI may include one or more blocks, and the first terminal device may correspond to one or more blocks. The first terminal device may determine the starting bit position of its corresponding block in the first DCI through the high-level parameters "startingBitOfFormat2-3" or "startingBitOfFormat2-3SUL", thereby determining the one or more blocks corresponding to itself in the first DCI.

[0168] For example, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type A, the first terminal device corresponds to a block, and a block includes an optional "SRS request" field (domain) and at least one "TPC command" field (domain). In other words, a block may include an "SRS request" field or may not include an "SRS request" field.

[0169] If the higher-layer parameter "srs-TPC-PDCCH-Group" indicates type B, the first terminal device corresponds to one or more blocks, each of which contains an optional "SRS request" field and a "TPC command" field. In other words, a block may or may not contain an "SRS request" field.

[0170] It should be understood that in the embodiment of the present application, at least one "TPC command" field corresponding to the first terminal device corresponds to or is associated with the same cell, the same carrier or the same BWP.

[0171] Optionally, as a possible implementation method, when the power control adjustment state of the AS SRS sent by the first terminal device is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the CB SRS or NCB SRS sent by the first terminal device follows the power control adjustment state of the PUSCH (that is, the power control adjustment state of the CB SRS or NCB SRS is consistent with the power control adjustment state of the PUSCH), then at least one TPC command field in the block corresponding to the first terminal device indicates (or only corresponds to) AS SRS, that is, at least one TPC command field corresponding to the first terminal device indicates the power control adjustment state of AS SRS; in other words, at least one TPC command field corresponding to the first terminal device indicates the power control adjustment state of the AS SRS sent by the first terminal device to the DL TRP or the traditional base station. At least one "TPC command" field corresponding to the first terminal device corresponds to the same carrier, the same cell (cell) or the same BWP. For example, the first cell, the first carrier or the first BWP.

[0172] In the following description, "carrier" will be used as an example. It is understood that unless otherwise specified, "carrier" can also be replaced by "cell" or "BWP". For example, the first carrier can be replaced by the first cell or the first BWP, and the same carrier can be replaced by the same cell or the same BWP, etc.

[0173] For example, if the high-level parameter "srs-TPC-PDCCH-Group" indicates typeA, in the first DCI, the first terminal device corresponds to a block, and a block contains an optional "SRS request" field and at least one "TPC command" field (domain). The at least one "TPC command" field corresponding to the first terminal device indicates the power control adjustment state of the AS SRS in the first carrier where the first terminal device is located. Among them, the AS SRS is the SRS sent by the first terminal device to the DLTRP or the traditional base station.

[0174] If the high-level parameter "srs-TPC-PDCCH-Group" indicates type B, in the first DCI, the first terminal device corresponds to one or more blocks, each block containing an optional "SRS request" field and a "TPC command" field. At least one "TPC command" field corresponding to the first terminal device indicates the power control adjustment state of the AS SRS in the first carrier where the first terminal device is located. The AS SRS is the SRS sent by the first terminal device to the DLTRP or traditional base station on the first carrier.

[0175] In this case, after receiving the first DCI, the first terminal device can determine the one or more blocks corresponding to itself. Since at least one "TPC command" field in the block corresponding to the first terminal device indicates the power control adjustment state of the AS SRS on the first carrier where the first terminal device is located, that is, at least one "TPC command" field corresponding to the first terminal device corresponds to the power control adjustment state of the AS SRS on the first carrier, the first terminal device can determine the power control adjustment state of the AS SRS in the first carrier based on at least one "TPC command" field in the block corresponding to itself.

[0176] Optionally, in a scenario where the first terminal device is in UL only TRP, the closed-loop power control of AS SRS is separated from PUSCH, and the closed-loop power control of CB SRS or NCB SRS is also separated from PUSCH, then at least one TPC command field corresponding to the first terminal device can indicate the power control adjustment state of SRS between the first terminal device and different network devices on the first carrier, and the different network devices include a first network device and a second network device. The first terminal device communicates on the first carrier. The at least one "TPC command" field corresponding to the first terminal device corresponds to the first carrier.

[0177] Optionally, if the first network device indicates an offset value (“offset value” may also be referred to as “path loss offset value”) of the uplink path loss and downlink path loss between the first terminal device and the DL TRP, then at least one TPC command field corresponding to the first terminal device may correspond to different Δ RSRP Due to different Δ RSRP The offset value of the uplink path loss and downlink path loss between the first terminal device and different network devices corresponds to the offset value of the uplink path loss and downlink path loss between the first terminal device and different network devices, and the SRS transmitted between the first terminal device and different network devices is different. RSRPBy using the association or correspondence between the two devices, it can be determined that the TPC command field indicates the power control adjustment state of the SRS transmitted between the first terminal device and which network device.

[0178] That is, at least one TPC command field corresponding to the first terminal device may correspond to or be associated with different Δ RSRP In other words, DCI format 2_3 can carry multiple TPC commands for one UE and one carrier (cell). Different TPC commands are associated with different Δ RSRP Related, different Δ RSRP The bias values ​​of the uplink and downlink path losses corresponding to the first terminal device and different network devices, and the SRS sent by the first terminal device to different network devices are different. In this way, it can be achieved that: at least one TPC command field corresponding to the first terminal device indicates (or corresponds to) the power control adjustment state of the SRS between the first terminal device and different network devices within the same carrier (first carrier). In other words, different path loss bias values ​​correspond to SRS for different purposes.

[0179] For example, in conjunction with the example shown in FIG1 , the first network device (ie, DL TRP) may indicate three Δ RSRP , respectively Δ RSRP1 , Δ RSRP2 , Δ RSRP3 , Δ RSRP1 Indicates the offset value of the uplink path loss and downlink path loss between the first terminal device and the DL TRP. The first terminal device transmits AS SRS to the DL TRP, that is, Δ RSRP1 Corresponding (associated) AS SRS. Among them, Δ RSRP1 Equal to 0.

[0180] Δ RSRP2 Indicates the offset value of the uplink path loss and downlink path loss between the first terminal device and UL only TRP1. The first terminal device transmits CB SRS1 or NCB SRS1 to UL only TRP1, that is, Δ RSRP2 Corresponding (associated) CB SRS1 or NCB SRS1.

[0181] Δ RSRP3 Indicates the offset value of the uplink path loss and downlink path loss between the first terminal device and UL only TRP2. The first terminal device transmits CB SRS2 or NCB SRS2 to UL only TRP2, that is, Δ RSRP3 Corresponding (associated) CB SRS2 or NCB SRS2.

[0182] For example, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type A, the first terminal device corresponds to a block (for example, block B), and block B includes an optional "SRS request" field (domain) and three "TPC command" fields (domains), for example, as shown in FIG4 , namely "TPC command1", "TPC command2", and "TPC command3". Assume that the "TPC command1" field can correspond to (be associated with) Δ RSRP1 , the "TPC command2" field can correspond to Δ RSRP2 , the "TPC command3" field can correspond to Δ RSRP3 The "TPC command 1", "TPC command 2", and "TPC command 3" fields all correspond to the same carrier (the first carrier).

[0183] Of course, the "TPC command1", "TPC command2", and "TPC command3" fields are the same as the three Δ RSRP The correspondence or association relationship between them can also be other correspondence or association relationships, which is not limited in the embodiments of the present application.

[0184] After the first terminal device receives the first DCI, since the block B corresponding to the first terminal device contains 3 "TPC commands", the "TPC command 1" field corresponds to Δ RSRP1 , Δ RSRP1 For AS SRS, the "TPC command1" field indicates the power control adjustment state of AS SRS. The "TPC command2" field corresponds to Δ RSRP2 , Δ RSRP2 Corresponding to (associated with) CB SRS1 or NCB SRS1, that is, the "TPC command2" field indicates the power control adjustment state of CB SRS1 or NCB SRS1. The "TPC command3" field corresponds to Δ RSRP3 , Δ RSRP3 Corresponding to (associated with) CB SRS2 or NCB SRS2, that is, the "TPC command3" field indicates the power control adjustment state of CB SRS2 or NCB SRS2.

[0185] After receiving the first DCI, the first terminal device can determine, based on the three "TPC commands" contained in block B, the power control adjustment state of AS SRS, the power control adjustment state of CB SRS1 or NCB SRS1, and the power control adjustment state of CB SRS2 or NCB SRS2.

[0186] For example, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type B, the first terminal device corresponds to one or more blocks. For example, as shown in FIG5 , the first terminal device corresponds to three blocks, namely block1, block2, and block3. Each block includes an optional "SRS request" field (domain) and a "TPC command" field (domain). The "TPC command1" field in block1 corresponds to (is associated with) Δ RSRP1 , the "TPC command2" field in block2 corresponds to Δ RSRP2 , the "TPC command3" field in block3 Δ RSRP3 The "TPC command 1", "TPC command 2", and "TPC command 3" fields all correspond to the same carrier (the first carrier).

[0187] After the first terminal device receives the first DCI, the "TPC command 1" field in block 1 corresponds to Δ RSRP1 , Δ RSRP1 Corresponding to AS SRS, the "TPC command1" field in block1 indicates the power control adjustment state of AS SRS. The "TPC command2" field in block2 corresponds to Δ RSRP2 , Δ RSRP2 Corresponding to (associated with) CB SRS1 or NCB SRS1, that is, the "TPC command2" field in block2 indicates the power control adjustment state of CB SRS1 or NCB SRS1. The "TPC command3" field in block3 corresponds to Δ RSRP3 , Δ RSRP3The "TPC command3" field in block 3, which corresponds to (associated with) CB SRS2 or NCB SRS2, indicates the power control adjustment state of CB SRS2 or NCB SRS2. After the first terminal device receives the first DCI, it can determine, based on the three "TPC command" fields contained in the three blocks: the closed-loop power control adjustment amount power control adjustment state of AS SRS, the power control adjustment state of CB SRS1 or NCB SRS1, and the power control adjustment state of CB SRS2 or NCB SRS2.

[0188] Optionally, if the first network device does not indicate the bias values ​​of the uplink path loss and the downlink path loss between the first terminal device and the DL TRP, the at least one TPC command field corresponding to the first terminal device can correspond to (be associated with) the SRS between the first terminal device and different network devices within the first carrier, and the first terminal device communicates on the first carrier. In other words, the at least one TPC command field corresponding to the first terminal device can correspond to or be associated with different network devices, and the SRS resource sets sent by the first terminal device to different network devices are different, and the different network devices include the first network device and the second network device. In other words, the at least one TPC command field corresponding to the first terminal device can correspond to or be associated with the SRS sent by the first terminal device to different network devices. The at least one "TPC command" field corresponding to the first terminal device corresponds to the same carrier (first carrier).

[0189] That is, DCI format 2_3 can carry multiple TPC commands for one UE and one carrier, and different TPC commands are associated with different network devices, or different TPC commands are associated with SRSs sent by the UE to different network devices.

[0190] For example, in conjunction with the example shown in FIG1 , the first network device (ie, DL TRP) may indicate two Δ RSRP , respectively Δ RSRP1 and Δ RSRP2 . Δ RSRP1 Indicates the offset value of the uplink path loss and downlink path loss corresponding to the power control of CB SRS1 or NCB SRS1, or in other words, Δ RSRP1 Indicates the offset value of the uplink path loss and downlink path loss between the first terminal device and UL only TRP1. The first terminal device transmits CB SRS1 or NCB SRS1 to UL only TRP1. RSRP2Indicates the offset value of the uplink path loss and downlink path loss corresponding to the power control of CB SRS2 or NCB SRS2, or in other words, Δ RSRP2 It represents the offset value of the uplink path loss and downlink path loss between the first terminal device and UL only TRP2. The first terminal device transmits CB SRS2 or NCB SRS2 to UL only TRP2.

[0191] Exemplarily, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type A, the first terminal device corresponds to a block (for example, block C), and block C includes an optional "SRS request" field (domain) and three "TPC command" fields (domains), for example, as shown in Figure 6, namely "TPC command1", "TPC command2", and "TPC command3". The "TPC command1" field, the "TPC command2" field, and the "TPC command3" field all correspond to or are associated with the first carrier.

[0192] Optionally, the "TPC command1" field corresponds to DL TRP, and the first terminal device transmits AS SRS to the DL TRP, that is, the "TPC command1" field corresponds to AS SRS, or in other words, the "TPC command1" field indicates the power control adjustment state of AS SRS.

[0193] The "TPC command2" field corresponds to UL only TRP1 (or corresponds to Δ RSRP1 ), and the first terminal device transmits CB SRS1 or NCB SRS1 to UL only TRP1, that is, the "TPC command2" field corresponds to CB SRS1 or NCB SRS1, or in other words, the "TPC command2" field indicates the power control adjustment state of CB SRS1 or NCB SRS1.

[0194] The "TPC command3" field corresponds to UL only TRP2 (or corresponds to Δ RSRP2 ), and the first terminal device transmits CB SRS2 or NCB SRS2 to UL only TRP2, that is, the "TPC command3" field corresponds to CB SRS2 or NCB SRS2, or in other words, the "TPC command3" field indicates the power control adjustment state of CB SRS2 or NCB SRS2.

[0195] After the first terminal device receives the first DCI, since the block C corresponding to the first terminal device contains 3 "TPC commands", the "TPC command1" field corresponds to AS SRS, that is, the "TPC command1" field indicates the power control adjustment state of AS SRS. The "TPC command2" field corresponds to UL only TRP1 (or corresponds to Δ RSRP1 ), that is, the "TPC command2" field indicates the power control adjustment state of CB SRS1 or NCB SRS1. The "TPC command3" field corresponds to UL only TRP2 (or corresponds to Δ RSRP2 ), that is, the "TPC command3" field indicates the power control adjustment state of CB SRS2 or NCB SRS2. The first terminal device can determine the power control adjustment state of AS SRS, the power control adjustment state of CB SRS1 or NCB SRS1, and the power control adjustment state of CB SRS2 or NCB SRS2 based on the three "TPC commands" contained in block C.

[0196] For example, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type B, the first terminal device corresponds to one or more blocks. For example, as shown in Figure 7, the first terminal device corresponds to 3 blocks, namely block1, block2 and block3, and each block contains an optional "SRS request" field (domain) and 1 "TPC command" field (domain).

[0197] The "TPC command1" field in block1 corresponds to DL TRP, and the first terminal device transmits AS SRS to DL TRP, that is, the "TPC command1" field in block1 corresponds to AS SRS, or in other words, the "TPC command1" field in block1 indicates the power control adjustment state of AS SRS.

[0198] The "TPC command2" field in block2 corresponds to UL only TRP1 (or corresponds to Δ RSRP1 ), and the first terminal device transmits CB SRS1 or NCB SRS1 to UL only TRP1, that is, the "TPC command2" field in block2 corresponds to CB SRS1 or NCB SRS1, or in other words, the "TPC command2" field in block2 indicates the power control adjustment state of CB SRS1 or NCB SRS1.

[0199] The "TPC command3" field in block3 corresponds to UL only TRP2 (or corresponds to Δ RSRP2 ), and the first terminal device transmits CB SRS2 or NCB SRS2 to UL only TRP2, that is, the block3 "TPC command3" field corresponds to CB SRS2 or NCB SRS2, or in other words, the block3 "TPC command3" field indicates the power control adjustment state of CB SRS2 or NCB SRS2.

[0200] The "TPC command 1" field, the "TPC command 2" field, and the "TPC command 3" field all correspond to or are associated with the same carrier (the first carrier).

[0201] After the first terminal device receives the first DCI, due to the three blocks corresponding to the first terminal device, the "TPC command1" field in block1 indicates the power control adjustment state of AS SRS. The "TPC command2" field in block2 indicates the power control adjustment state of CB SRS1 or NCB SRS1. The "TPC command3" field in block3 corresponds to the power control adjustment state of CB SRS2 or NCB SRS2. The first terminal device can determine the power control adjustment state of AS SRS, the power control adjustment state of CB SRS1 or NCB SRS1, and the power control adjustment state of CB SRS2 or NCB SRS2 based on the corresponding three "TPC command" fields.

[0202] In the above manner, in the UL only TRP scenario, when the closed-loop power control of SRS and PUSCH are separated, at least one TPC command field corresponding to the terminal device in the first DCI may correspond to or be associated with different Δ RSRP Alternatively, at least one TPC command field corresponding to the terminal device in the first DCI may correspond to or be associated with an SRS sent by the terminal device to different network devices on one carrier. In this way, the terminal device can determine the power control adjustment state of different SRSs on the same carrier based on the at least one TPC command field corresponding to the terminal device in the first DCI, and the terminal device can correctly send AS SRS, CB SRS or NCB SRS, thereby avoiding over-power transmission or insufficient transmission power of SRS and improving the transmission efficiency of SRS.

[0203] In some possible implementations of the present application, in a scenario where the first terminal device is in UL only TRP, the closed-loop power control of AS SRS is separated from PUSCH, and the closed-loop power control of CB SRS or NCB SRS is also separated from PUSCH, at least one TPC command field corresponding to the first terminal device can correspond to (associated with) different SRS resource sets or SRS resources, and different SRS resource sets or SRS resources are SRS resource sets or SRS resources on the same carrier. Since the first terminal device uses different SRS resource sets or SRS resources when sending SRS to different network devices, by having at least one TPC command field corresponding to the first terminal device correspond (associated with) different SRS resource sets or SRS resources, it can be achieved that: at least one TPC command field corresponding to the first terminal device indicates (or corresponds to) the power control adjustment state of the SRS between the first terminal device and different network devices on the first carrier, and the first terminal device communicates on the first carrier. The different network devices include a first network device and a second network device, and the SRS sent by the first terminal device to the first network device and the second network device are different SRSs. At least one "TPC command" field corresponding to the first terminal device corresponds to or is associated with the same carrier (first carrier).

[0204] In other words, DCI format 2_3 can carry multiple TPC commands on one carrier for one UE, and different TPC commands are associated with different SRS resource sets or SRS resources.

[0205] Exemplarily, different SRS resource sets may be distinguished by an identifier of the SRS resource set, that is, at least one TPC command field may correspond to an identifier of a different SRS resource set (srs-ResourceSetId).

[0206] Optionally, the order of SRS resource set IDs from small to large may correspond to the order of TPC command fields from low to high, that is, as the multiple TPC command fields are arranged from low bits to high bits, the SRS resource set IDs corresponding to the multiple TPC command fields are in order from small to large.

[0207] Of course, the order of SRS resource set IDs from small to large can also correspond to the order of TPC command fields from high to low. That is, as the multiple TPC command fields are arranged from low bits to high bits, the SRS resource set IDs corresponding to the multiple TPC command fields are in order from large to small.

[0208] For example, in conjunction with the example shown in Figure 1, if the high-level parameter "srs-TPC-PDCCH-Group" indicates type A, for example, as shown in Figure 8, the first terminal device corresponds to a block (for example, block D), and block D contains an optional "SRS request" field (domain) and 3 "TPC command" fields (domains), namely "TPC command1", "TPC command2", and "TPC command3". The "TPC command1" field, the "TPC command2" field, and the "TPC command3" field all correspond to or are associated with the same carrier (the first carrier).

[0209] The number (number) of TPC command fields in block D needs to be consistent with the number of SRSs for independent closed-loop power control, that is, the number (number) of TPC command fields corresponding to the first terminal device needs to be the same as the number of SRS resource sets for independent closed-loop power control. For example, in the example shown in Figure 1, the number of SRSs for independent closed-loop power control is 3, namely: AS SRS, CB SRS1 or NCB SRS1, CB SRS2 or NCB SRS2. Therefore, the number of "TPC command" fields corresponding to the first terminal device is 3.

[0210] Among them, the "TPC command1" field (association) corresponds to the SRS resource set (AS SRS resource set) for antenna switching. The AS SRS resource set is the resource set used by the first terminal device to send AS SRS to DL TRP, that is, the "TPC command1" field indicates the power control adjustment state of AS SRS.

[0211] Optionally, an SRS resource set used for antenna switching may also be referred to as an AS SRS resource set. Unless otherwise specified, an AS SRS resource set refers to an SRS resource set used for antenna switching.

[0212] The "TPC command2" field corresponds to (is associated with) the CB SRS1 or NCB SRS1 resource set. The CB SRS1 or NCB SRS1 resource set is the resource set used by the first terminal device to send CB SRS1 or NCB SRS1 to UL only TRP1, that is, the "TPC command2" field indicates the closed-loop power control adjustment state of CB SRS1 or NCB SRS1.

[0213] Optionally, an SRS resource set whose usage is a codebook may also be referred to as a CB SRS resource set. Unless otherwise specified, a CB SRS resource set refers to an SRS resource set whose usage is a codebook. An SRS resource set whose usage is non-codebook may also be referred to as an NCB SRS resource set. In the embodiments of the present application, unless otherwise specified, an NCB SRS resource set refers to an SRS resource set whose usage is non-codebook.

[0214] The "TPC command3" field corresponds to (is associated with) the CB SRS2 or NCB SRS2 resource set. The CB SRS2 or NCB SRS2 resource set is the resource set used by the first terminal device to send CB SRS2 or NCB SRS2 to UL only TRP2, that is, the "TPC command3" field indicates the power control adjustment state of CB SRS2 or NCB SRS2.

[0215] After the first terminal device receives the first DCI, since the block D corresponding to the first terminal device contains 3 "TPC command" fields, the "TPC command1" field corresponds to the AS SRS resource set, that is, the "TPC command1" field indicates the power control adjustment state of the AS SRS. The "TPC command2" field corresponds to the CB SRS1 or NCB SRS1 resource set, that is, the "TPC command2" field indicates the power control adjustment state of the CB SRS1 or NCB SRS1. The "TPC command3" field corresponds to the CB SRS2 or NCB SRS2 resource set, that is, the "TPC command3" field indicates the power control adjustment state of the CB SRS2 or NCB SRS2. Based on the 3 "TPC commands" contained in block D, the first terminal device can determine: the power control adjustment state of the AS SRS, the power control adjustment state of the CB SRS1 or NCB SRS1, and the power control adjustment state of the CB SRS2 or NCB SRS2.

[0216] For example, in combination with the example shown in FIG1 , if the high-level parameter “srs-TPC-PDCCH-Group” indicates type B, the first terminal device corresponds to one or more blocks. For example, as shown in FIG9 , the first terminal device corresponds to three blocks, namely block1, block2 and block3, each of which contains an optional “SRS request” field (domain) and one “TPC command” field (domain). The number of blocks corresponding to the first terminal device (or the number of “TPC command” fields) needs to be consistent with the number of SRSs for independent closed-loop power control, that is, the number of blocks corresponding to the first terminal device (or the number of “TPC command” fields) needs to be the same as the number of SRS resource sets for independent closed-loop power control. For example, in the example shown in FIG1 , the number of SRSs for independent closed-loop power control is three, namely: AS SRS, CB SRS1 or NCB SRS1, CB SRS2 or NCB SRS2. Therefore, the number of “TPC commands” corresponding to the first terminal device is three, that is, the number of blocks corresponding to the first terminal device is three.

[0217] Among them, the "TPC command1" field in block1 corresponds to the AS SRS resource set, which is the resource set used by the first terminal device to send AS SRS to DL TRP, that is, the "TPC command1" field in block1 indicates the power control adjustment state of AS SRS.

[0218] The "TPC command2" field in block2 corresponds to (is associated with) the CB SRS1 or NCB SRS1 resource set. The CB SRS1 or NCB SRS1 resource set is the resource set used by the first terminal device to send CB SRS1 or NCB SRS1 to UL only TRP1, that is, the "TPC command2" field in block2 indicates the power control adjustment state of CB SRS1 or NCB SRS1.

[0219] The "TPC command3" field in block3 corresponds to (is associated with) the CB SRS2 or NCB SRS2 resource set. The CB SRS2 or NCB SRS2 resource set is the resource set used by the first terminal device to send CB SRS2 or NCB SRS2 to UL only TRP2, that is, the "TPC command3" field in block3 indicates the power control adjustment state of CB SRS1 or NCB SRS1.

[0220] The "TPC command 1" field, the "TPC command 2" field, and the "TPC command 3" field all correspond to or are associated with the same carrier (the first carrier).

[0221] After the first terminal device receives the first DCI, due to the three blocks corresponding to the first terminal device, the "TPC command1" field in block1 indicates the power control adjustment state of AS SRS, the "TPC command2" field in block2 indicates the power control adjustment state of CB SRS1 or NCB SRS1, and the "TPC command3" field in block3 indicates the power control adjustment state of CB SRS2 or NCB SRS2. The first terminal device can determine the power control adjustment state of AS SRS, the power control adjustment state of CB SRS1 or NCB SRS1, and the power control adjustment state of CB SRS2 or NCB SRS2 based on the three "TPC command" fields contained in the three blocks.

[0222] Through the above method, in the UL only TRP scenario, when the closed-loop power control of SRS and PUSCH are separated, the at least one TPC command field corresponding to the terminal device in the first DCI can correspond to or be associated with different SRS resource sets or SRS resources on the same carrier. In this way, the terminal device can determine the power control adjustment state of different SRS on a carrier (or within a cell) according to the at least one TPC command field corresponding to the terminal device in the first DCI. The terminal device can correctly send AS SRS, CB SRS or NCB SRS, avoid over-power transmission or insufficient transmission power of SRS, and improve the transmission efficiency of SRS.

[0223] Optionally, in some possible implementations of the present application, in order to be backward compatible with existing designs, the first network device may further send indication information to the first terminal device, where the indication information is used to indicate whether the first DCI (e.g., DCI format 2_3) includes an "SRS request" field. In this way, the first terminal device can determine whether the DCI Format DCI format 2_3 includes the SRS request field, so that the first terminal device can determine the length of DCI Format2-3 and correctly receive DCI Format2-3, thereby improving the accuracy and efficiency of the first terminal device in receiving DCI Format2-3.

[0224] For example, the "fieldTypeFormat2-3" field under the RRC parameter "SRS-TPC-CommandConfig" can be reused to indicate whether the first DCI (e.g., DCI format 2_3) includes the "SRS request" field. Alternatively, the "fieldTypeFormat2-3" field can be used to indicate whether a block in the first DCI (e.g., DCI format 2_3) includes the "SRS request" field. In this way, the indication information is carried in the "fieldTypeFormat2-3" field, which can save signaling, eliminate the need for additional signaling, and reduce communication resource overhead.

[0225] Optionally, in other possible implementations of the present application, a new field may be added to the "SRS-TPC-CommandConfig" RRC parameter to indicate whether the first DCI includes an "SRS request" field, or whether a block in the first DCI includes an "SRS request" field. In this way, the indication information is carried in a new field, which can more clearly indicate whether the first DCI includes the "SRS request" field, thereby improving the accuracy and efficiency of the indication.

[0226] Of course, in other implementations of the present application, the first network device may also send the indication information to the first terminal device through other signaling, or in other words, the indication information may also be carried in other signaling or parameters, and the embodiments of the present application are not limited here.

[0227] In the information transmission method provided by the present application, when the closed-loop power control of SRS and PUSCH for different purposes are separated, the network device can send a first DCI (for example, DCI format 2_3) to the terminal device. At least one "TPC command" field corresponding to the terminal device can be associated (corresponding) to the same carrier, the same cell (cell), or different Δ RSRP, or associate the SRS sent by the terminal device to different network devices on the same carrier, the same cell, or the same BWP, or associate different SRS resource sets on the same carrier, the same cell, or the same BWP, so that the terminal device can determine the power control adjustment state (power control adjustment state) of different SRSs in a carrier, a cell, or a BWP according to at least one "TPC command" field corresponding to it. For example, different SRSs in a cell may include: AS SRS, CB SRS, NCB SRS, etc. The terminal device can correctly send AS SRS, CB SRS, or NCB SRS according to the power control adjustment state of the SRS, avoid over-transmission of SRS power or insufficient transmission power, and improve the transmission efficiency of SRS.

[0228] Optionally, in some other possible implementations of the present application, 1 bit is used in DCI format 2_3 (also referred to as the third DCI) to indicate the SRS power control adjustment state index corresponding to the "TPC command" field. In other words, DCI format 2_3 may include an indication field (for example, a 1-bit field in DCI format 2_3) and at least one TPC instruction, and this indication field is used to indicate the index of the power control adjustment state of the SRS, or in other words, this indication field is used to indicate the SRS power control adjustment state index corresponding to at least one "TPC command" field. In this case, the first terminal device can determine the power control adjustment state of the SRS sent by the first terminal device to the network device based on the indication field and at least one TPC instruction in DCI format 2_3. The SRS sent by the first terminal device includes at least one of: an SRS for antenna switching, an SRS for codebook use, or an SRS for non-codebook use.

[0229] Optionally, as a possible implementation, the first terminal may further receive indication information (also referred to as second indication information), where the indication information is used to indicate: the value of the index of the power control adjustment state associated with SRS resource sets of different indexes; or the value of the index of the power control adjustment state associated with SRS resource sets of different uses. In other words, the second indication information is used to indicate whether the value of the SRS power control adjustment state index associated with SRSs of different uses is 0 or 1.

[0230] Figures 1 and 2 show schematic diagrams of an asymmetric downlink single TRP and uplink multiple TRP communication scenario. In the scenarios shown in Figures 1 and 2, the terminal device does not send PUSCH to the DL TRP.

[0231] Figure 10 is a schematic diagram of another asymmetric downlink single TRP and uplink multiple TRP communication scenario (communication system). In the scenario shown in Figure 10, the terminal device can send PUSCH to the DL TRP.

[0232] As shown in Figure 10, the communication system includes a terminal device, a UL-only TRP1, and a DL TRP. The terminal device can send CB SRS1 or NCB SRS1 to the UL-only TRP1, and can also send PUSCH1 to the UL-only TRP1. The terminal device can send AS SRS, CB SRS2, or NCB SRS2 to the DL TRP. The DL TRP can obtain downlink channel information based on the AS SRS and send a downlink reference signal or downlink data to the terminal device based on the downlink channel information. The terminal device can also send PUSCH2 to the DL TRP.

[0233] It should be understood that in the scenario shown in Figure 10, UL only TRP1 and DL TRP belong to the same cell, the same carrier or the same BWP, or, CB SRS1 or NCB SRS1, CB SRS2 or NCB SRS2, and AS SRS belong to the same cell, the same carrier or the same BWP.

[0234] It should be understood that in the example shown in FIG10 , the terminal device cannot send PUSCH1 and PUSCH2 at the same time, that is, the terminal device can only send PUSCH to UL only TRP1 or DL ​​TRP.

[0235] It can be understood that the scenario shown in Figure 10 is a multi-TRP PUSCH transmission scenario (mTRP PUSCH), that is, the UE can transmit PUSCH to one TRP among multiple TPRs, or repeatedly transmit PUSCH to multiple TRPs in a time division multiplexing manner.

[0236] In the scenario shown in Figure 10, the power control adjustment state of the AS SRS, CB SRS2 or NCB SRS2 sent by the terminal device to the DL TRP can follow the power control adjustment state of the PUSCH sent by the terminal device, that is, the power control adjustment state of the AS SRS, CB SRS2 or NCB SRS2 and PUSCH (PUSCH1 or PUSCH2) is the same. It should be understood that the terminal device will not transmit PUSCH1 and PUSCH2 at the same time, but will transmit PUSCH1 and PUSCH2 in a time division multiplexing manner. In addition, the power control adjustment state of the CB SRS1 or NCB SRS1 sent by the terminal device to the UL only TRP1 can also follow the power control adjustment state of the PUSCH (PUSCH1 or PUSCH2) sent by the terminal device, that is, the closed-loop power control adjustment state of the CB SRS1 or NCB SRS1 and PUSCH is the same.

[0237] To enable mTRP PUSCH transmission, DCI format 0_1 ​​or 0_2 in existing standards can include the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field. These two fields are used to indicate the power control adjustment state of the PUSCH (also known as the closed-loop power control adjustment amount). Among them, the "Second TPC command for scheduled PUSCH" field needs to be configured by the higher-layer parameter "SecondTPCFieldDCI-0-1" or "SecondTPCFieldDCI-0-2".

[0238] In a multi-TRP PUSCH transmission scenario, the network side can configure two SRS resource sets for the UE with usage as codebook or non-codebook, and the two SRS resource sets correspond to different TRPs respectively.

[0239] For example, if a UE is configured with two codebook-based SRS resource sets and SRIPUSCH power control (SRI-PUSCHPowerControl), and the DCI scheduling PUSCH transmission contains two SRS resource indicator (SRI) fields, the UE obtains the mapping between the values ​​of the first and second SRI fields from the "sri-PUSCH-PowerControlId" field in the higher-layer parameter "SRI-PUSCH-PowerControl" and the value of l provided by the "sri-PUSCH-ClosedLoopIndex" field, and determines the value of l for the mapping of the first and second SRI fields corresponding to each SRS resource set. For example, if SRI = 0, l = 0; if SRI = 1, l = 1. Where l represents the index of the PUSCH power control adjustment state and can be 0 or 1.

[0240] If the UE is configured with two resource sets with non-codebook usage and "SRI-PUSCHPowerControl" is configured, and the DCI scheduling PUSCH transmission contains two SRI fields, then the UE obtains the mapping between the value of the first SRI field and the l value provided by sri-PUSCH-ClosedLoopIndex from the "sri-PUSCH-PowerControlId" field in SRI-PUSCH-PowerControl, and determines the l value corresponding to the value of the first SRI field, and the first SRI field corresponds to the first SRS resource set; at the same time, the UE determines the l value corresponding to the value of the second SRI field, and the second SRI field corresponds to the second SRS resource set.

[0241] For example, if the UE is configured with two SRS resource sets for codebook or non-codebook purposes, and two PUSCH power control adjustment states (twoPUSCH-PC-AdjustmentStates) are configured, l represents the index of the PUSCH power control adjustment state, which can be 0 or 1. If the DCI format 0_1 ​​or 0_2 contains the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field, and the PUSCH transmission is associated with l = 0 and l = 1, the UE shall apply the "TPC command for scheduled PUSCH" field to the PUSCH power control adjustment state of l = 0 and the "Second TPC command for scheduled PUSCH" field to the PUSCH power control adjustment state of l = 1; If the DCI format 0_1 ​​or 0_2 contains the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field, and the PUSCH transmission is associated with l = 0, the UE shall apply the "TPC command for scheduled PUSCH" field to the PUSCH power control adjustment state of l = 0 and ignore the "Second TPC command for scheduled PUSCH" field; If the DCI format 0_1 ​​or 0_2 contains the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field, and the PUSCH transmission is associated with l = 0, the UE shall apply the "TPC command for scheduled PUSCH" field to the PUSCH power control adjustment state of l = 0 and ignore the "Second TPC command for scheduled PUSCH" field. If the DCI format 0_1 ​​or 0_2 contains only one TPC command field ("TPC command for scheduled PUSCH" field or "Second TPC command for scheduled PUSCH" field), the UE applies the TPC command field to all PUSCH power control adjustment states.

[0242] Currently, network devices can use the "TPC command for scheduled PUSCH" and "Second TPC command for scheduled PUSCH" fields in DCI format 0_1 ​​or 0_2 to indicate closed-loop power control adjustment states for two different PUSCH indices. Each of the "TPC command for scheduled PUSCH" and "Second TPC command for scheduled PUSCH" fields corresponds to (is associated with) an SRS resource set, which can be a codebook or non-codebook SRS resource set.

[0243] For example, the "TPC command for scheduled PUSCH" field is associated with the first SRS resource set, the "Second TPC command for scheduled PUSCH" field is associated with the second SRS resource set, the first SRS resource set is associated with the first TPR, and the second SRS resource set is associated with the second TPR.

[0244] After receiving DCI format 0_1 ​​or 0_2, the terminal device can determine that the "TPC command for scheduled PUSCH" also indicates the power control adjustment state of the first SRS resource set, based on the first SRS resource set associated with the "TPC command for scheduled PUSCH" field. Based on the second SRS resource set associated with the "Second TPC command for scheduled PUSCH" field, the terminal device can determine that the "TPC command for scheduled PUSCH" also indicates the power control adjustment state of the second SRS resource set.

[0245] That is, currently, DCI format 0_1 ​​or 0_2 contains two "TPC command for scheduled PUSCH" fields. These two TPC fields can be associated with PUSCH power control adjustment states with different indexes. l represents the index of the PUSCH power control adjustment state. The value of l can be 0 or 1. Different values ​​of l can be associated with different SRS resource sets. The SRS resource sets can be SRS resource sets with codebook or non-codebook usage, and different SRS resource sets correspond to different TRPs. In other words, the two "TPC command for scheduled PUSCH" fields can be associated with different TRPs and the corresponding SRS resource sets with codebook or non-codebook usage. The two PUSCH TPC commands carried in DCI format 0_1 ​​or 0_2 are associated with SRS resource sets with codebook or non-codebook usage, and do not include SRS resource sets with antenna switching usage.

[0246] However, in the scenario shown in Figure 10, the terminal device can also send AS SRS to DL TRP, and, that is, the closed-loop power control adjustment state of AS SRS and PUSCH is the same. A way is needed to notify the UE of the power control adjustment state of AS SRS so that the UE can send AS SRS with appropriate power to improve communication efficiency.

[0247] In view of this, the present application also provides a method for information transmission in an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, and the usage within a cell or carrier is the closed-loop power control of SRS for antenna switching following PUSCH. The network device may send indication information to the terminal device, where the indication information may indicate which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field in the second DCI (e.g., DCI format 0_1 ​​or 0_2) the power control adjustment state of the SRS resource set for antenna switching is associated with (follows). That is, the indication information may indicate which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field indicates the power control adjustment state of the SRS for AS. Alternatively, the indication information may also indicate whether the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with an index of 0 (l=0) or the PUSCH closed-loop power control adjustment state with an index of 1 (l=1). In this way, the terminal device can determine the power control adjustment state for the SRS for AS, avoid over-power transmission or insufficient transmission power of the SRS for AS, and improve the transmission efficiency of the SRS for AS.

[0248] Exemplarily, the method provided in the present application can be applied in the scenario of asymmetric downlink single TRP and uplink multiple TRP, or in other words, the embodiment of the present application can be applied in the UL only TRP scenario, and when the closed-loop power control of the AS SRS within a cell or carrier follows the PUSCH, it can be applied in the UL only TRP scenario shown in Figure 10, for example.

[0249] The method provided by the present application is described in detail below in conjunction with Figure 11. Figure 11 is a schematic flowchart of a method for information transmission in an embodiment of the present application. The method 1100 can be applied to the communication scenario or communication architecture shown in 10, and of course can also be applied to other communication scenarios or communication architectures with the above-mentioned problems. The embodiment of the present application is not limited here.

[0250] As shown in Figure 11 , the method 1100 shown in Figure 11 may include steps S1110 to S1130. The following describes each step in the method 1100 in detail with reference to Figure 11 .

[0251] S1110, the network device sends indication information to the terminal device, and the indication information is used to indicate: the value of the index of the PUSCH power control adjustment state associated with the SRS resource set for antenna switching, and the value of the index of the PUSCH power control adjustment state is used to determine the TPC field in the second DCI associated with the SRS resource set for antenna switching.

[0252] Correspondingly, the terminal device receives the indication information.

[0253] Optionally, the indication information in S1110 may also be referred to as first indication information.

[0254] It is understood that the network device in S1110 may include a DL TRP or a traditional base station. The terminal device may send an AS SRS to the DL TRP or the traditional base station, and the terminal device may also send a PUSCH to the DL TRP (traditional base station) or the UL-only TRP. The power control adjustment state of the AS SRS follows the terminal device sending a PUSCH to the DL TRP or the UL-only TRP.

[0255] Exemplarily, the second DCI may be DCI format 0_1 ​​or 0_2. Of course, in other implementations of the present application, the second DCI may also have other names, as long as the second DCI can include at least one of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field. The embodiments of the present application do not limit the specific format and name of the second DCI.

[0256] In the following examples, the second DCI is described as DCI format 0_1 ​​or 0_2.

[0257] It should be understood that DCI format 0_1 ​​or 0_2 may include two TPC fields (i.e., two TPC fields for scheduling PUSCH), namely the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field. These two fields respectively indicate the power control adjustment state of the PUSCH (also known as the closed-loop power control adjustment state). The "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field are respectively associated with (corresponding to) the indexes of different PUSCH power control adjustment states.

[0258] It should also be understood that the PUSCH power control adjustment state may also be expressed as: PUSCH closed-loop power control adjustment state or PUSCH closed-loop power control adjustment state.

[0259] For example, the value of the index l of the PUSCH power control adjustment state associated (corresponding) to the "TPC command for scheduled PUSCH" field is 0, and the value of the index l of the PUSCH power control adjustment state associated (corresponding) to the "Second TPC command for scheduled PUSCH" field is 1.

[0260] For another example, the value of index l of the PUSCH power control adjustment state associated (corresponding) to the "TPC command for scheduled PUSCH" field is 1, and the value of index l of the PUSCH power control adjustment state associated (corresponding) to the "Second TPC command for scheduled PUSCH" field is 0.

[0261] Optionally, two "TPC command for scheduled PUSCH" fields can be associated with different TRPs.

[0262] Since the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field are respectively associated with (corresponding to) different PUSCH power control adjustment state indices, the value of the index of the PUSCH power control adjustment state associated with the AS SRS resource set can be used to determine whether the AS SRS resource set corresponds to the "TPC command for scheduled PUSCH" field or the "Second TPC command for scheduled PUSCH" field in DCI format 0_1 ​​or 0_2. In other words, the value of the index of the PUSCH power control adjustment state is used to determine whether the AS SRS resource set is associated with the "TPC command for scheduled PUSCH" field or the "Second TPC command for scheduled PUSCH" field in the second DCI.

[0263] In other words, the indication information may indicate the correspondence between the PUSCH power control adjustment state and the SRS resource set used for AS.

[0264] Of course, in other implementations of the present application, the indication information in S1110 may also indicate whether the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with index 0 (l=0) or the PUSCH closed-loop power control adjustment state with index 1 (l=1). In this way, the indication information may also indicate the correspondence between the PUSCH power control adjustment state and the SRS resource set for antenna switching.

[0265] For example, the indication information may indicate that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with index 0 (l=0). Alternatively, the indication information may indicate that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with index 1 (l=1).

[0266] S1120, the terminal device determines the TPC field in the second DCI associated with the SRS resource set for antenna switching AS according to the value of the index of the PUSCH power control adjustment state.

[0267] For example, if the index value of the PUSCH power control adjustment state associated with the AS SRS resource set indicated by the indication information is 0, or the indication information indicates that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with an index of 0 (l=0), and the index l of the PUSCH power control adjustment state associated (corresponding) with the "TPC command for scheduled PUSCH" field is 0, and the index l of the PUSCH power control adjustment state associated (corresponding) with the "Second TPC command for scheduled PUSCH" field is 1. Then the terminal device can determine that the AS SRS resource set is associated with or corresponds to the "TPC command for scheduled PUSCH" field, and the "TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated (corresponding) with the AS SRS resource set. In other words, the "TPC command for scheduled PUSCH" field can indicate the power control adjustment state of the AS SRS.

[0268] For another example, if the index value of the PUSCH power control adjustment state associated with the AS SRS resource set indicated by the indication information is 1, or the indication information indicates that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with an index of 1 (l=1), and the index l of the PUSCH power control adjustment state associated (corresponding) with the "TPC command for scheduled PUSCH" field is 0, and the index l of the PUSCH power control adjustment state associated (corresponding) with the "Second TPC command for scheduled PUSCH" field is 1, then the terminal device can determine that the AS SRS resource set is associated with or corresponds to the "Second TPC command for scheduled PUSCH" field, and the "Second TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated with the AS SRS resource set. In other words, the "Second TPC command for scheduled PUSCH" field can indicate the power control adjustment state of the AS SRS.

[0269] For another example, if the index value of the PUSCH power control adjustment state associated with the AS SRS resource set indicated by the indication information is 0, or the indication information indicates that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with an index of 0 (l=0), and the index l of the PUSCH power control adjustment state associated (corresponding) with the "TPC command for scheduled PUSCH" field is 1, and the index l of the PUSCH power control adjustment state associated (corresponding) with the "Second TPC command for scheduled PUSCH" field is 0, then the terminal device can determine that the AS SRS resource set is associated with or corresponds to the "Second TPC command for scheduled PUSCH" field, and the "Second TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated with the AS SRS resource set. In other words, the "Second TPC command for scheduled PUSCH" field can indicate the power control adjustment state of the AS SRS.

[0270] For another example, if the index value of the PUSCH power control adjustment state associated with the AS SRS resource set indicated by the indication information is 1, or the indication information indicates that the closed-loop power control of the SRS for antenna switching follows the PUSCH closed-loop power control adjustment state with an index of 1 (l=1), and the index l of the PUSCH power control adjustment state associated (corresponding) with the "TPC command for scheduled PUSCH" field is 1, and the index l of the PUSCH power control adjustment state associated (corresponding) with the "Second TPC command for scheduled PUSCH" field is 0. The terminal device can determine that the AS SRS resource set is associated with or corresponds to the "TPC command for scheduled PUSCH" field, and the "TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated with the AS SRS resource set. In other words, the "TPC command for scheduled PUSCH" field can indicate the power control adjustment state of the AS SRS.

[0271] S1130, the terminal device determines the power control adjustment state of the SRS for the antenna switching AS according to the TPC field in the second DCI associated with the SRS resource set for the antenna switching.

[0272] For example, if the "TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated with the AS SRS resource set, the terminal device can determine the power control adjustment state of the AS SRS based on the "TPC command for scheduled PUSCH" field. For example, the power control adjustment state of the PUSCH indicated by the "TPC command for scheduled PUSCH" field is determined as the power control adjustment state of the AS SRS.

[0273] For another example, if the "Second TPC command for scheduled PUSCH" field is the TPC field in the second DCI associated with the AS SRS resource set, the terminal device can determine the power control adjustment state of the AS SRS based on the "Second TPC command for scheduled PUSCH" field. For example, the power control adjustment state of the PUSCH indicated by the "Second TPC command for scheduled PUSCH" field is determined as the power control adjustment state of the AS SRS.

[0274] Through the above-described method 1100, the network device can send indication information to the terminal device, including the value of the index of the PUSCH power control adjustment state associated with the AS SRS resource set. That is, the indication information can indicate which of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field indicates the power control adjustment state of the AS SRS. Based on the indication information, the terminal device can determine the power control adjustment state of the AS SRS, thereby avoiding over-power transmission or insufficient transmit power of the AS SRS and improving the transmission efficiency of the AS SRS.

[0275] Optionally, before S1110, the network device may further send at least one indication message to the terminal device, each indication message being associated with an SRS resource set, different indication messages being associated with different SRS resource sets, and each indication message being used to indicate whether the power control adjustment state of the SRS resource set associated with the indication message is consistent with the PUSCH power control adjustment state. In other words, each indication message may be used to indicate whether the power control adjustment state of the SRS resource set associated with the indication message follows the PUSCH power control adjustment state, that is, whether the power control adjustment state of the SRS resource set associated with the indication message follows the PUSCH power control adjustment state, or is independent (separated) from the PUSCH power control adjustment state.

[0276] For example, an SRS resource set may include at least one of an SRS resource set for antenna switching, a codebook, and a non-codebook SRS resource set. The network device may send three different indication messages to the terminal device, indicating respectively whether the power control adjustment state of the SRS resource set for antenna switching is consistent with the PUSCH power control adjustment state, whether the power control adjustment state of the SRS resource set for codebook is consistent with the PUSCH power control adjustment state, and whether the power control adjustment state of the SRS resource set for non-codebook is consistent with the PUSCH power control adjustment state.

[0277] Of course, in method 1100, the indication information associated with an SRS resource set with codebook usage may indicate that the power control adjustment state of the SRS resource set with codebook usage is consistent with the PUSCH power control adjustment state. The indication information associated with an SRS resource set with non-codebook usage may indicate that the power control adjustment state of the SRS resource set with non-codebook usage is consistent with the PUSCH power control adjustment state. The indication information associated with an SRS resource set with antenna switching usage may indicate that the power control adjustment state of the SRS resource set with antenna switching usage is consistent with the PUSCH power control adjustment state.

[0278] After receiving the indication information, the terminal device can determine that the power control adjustment states corresponding to the SRS resource sets used for antenna switching, the codebook SRS resource sets used for codebook, and the non-codebook SRS resource sets are consistent with the PUSCH power control adjustment state. In this case, the terminal device can perform method 1100.

[0279] Optionally, as a possible implementation method, the indication information in S1110 may be in the SRIPUSCH power control (sri-PUSCH-PowerControl) field carried in the RRC signaling. For example, a new indication field may be added to "sri-PUSCH-PowerControl", and this new indication field indicates the index value of the PUSCH power control adjustment state associated with the AS SRS resource set. Alternatively, a field in "sri-PUSCH-PowerControl" may be reused. The embodiments of the present application are not limited here. In this way, that is, the indication information is carried in the "sri-PUSCH-PowerControl" field, signaling can be saved without adding additional signaling, thereby reducing the overhead of communication resources.

[0280] Optionally, as another possible implementation manner, the indication information in S1110 may also be carried in a media access control element (MAC CE).

[0281] For example, the MAC CE may be a "PUSCH Pathloss Reference RS Update MAC CE", and the 1 bit reserved in the "PUSCH Pathloss Reference RS Update MAC CE" may be used to indicate the index of the PUSCH power control adjustment state associated with the AS SRS resource set.

[0282] If the UE is configured with two SRS resource sets for codebook or non-codebook purposes on the indicated BWP in the serving cell, there are two possible implementations:

[0283] The first possible implementation:

[0284] If the value of the reserved 1 bit in the "PUSCH Pathloss Reference RS Update MAC CE" is 0, it indicates that the index of the PUSCH power control adjustment state associated with the AS SRS resource set is 0, and the power control adjustment state of the AS SRS resource set is associated with the "TPC command for scheduled PUSCH" field. In other words, if the value of the reserved 1 bit is 0, the power control adjustment state of the SRS resource set used for AS is associated with the power control adjustment state of the first SRS resource set used for codebook or non-codebook.

[0285] If the reserved bit is set to 1, it indicates that the index of the PUSCH power control adjustment state associated with the AS SRS resource set is 1, and the power control adjustment state of the AS SRS resource set is associated with the "Second TPC command for scheduled PUSCH" field. In other words, if the reserved bit is set to 1, the power control adjustment state of the AS SRS resource set is associated with the power control adjustment state of the second SRS resource set used for codebook or non-codebook purposes.

[0286] The second possible implementation is:

[0287] If the reserved bit is set to 0, it indicates that the index of the PUSCH power control adjustment state associated with the AS SRS resource set is 0, and the closed-loop power control of the AS SRS resource set is associated with the "Second TPC command for scheduled PUSCH" field. In other words, if the reserved bit is set to 0, the power control adjustment state of the AS-purpose SRS resource set is associated with the power control adjustment state of the second SRS resource set used for codebook or non-codebook purposes.

[0288] If the reserved bit is set to 1, it indicates that the index of the PUSCH power control adjustment state associated with the AS SRS resource set is 1, and the power control adjustment state of the AS SRS resource set is associated with the "TPC command for scheduled PUSCH" field. In other words, if the reserved bit is set to 1, the power control adjustment state of the AS SRS resource set is associated with the power control adjustment state of the first SRS resource set used for codebook or non-codebook purposes.

[0289] In this way, the indication information is carried in the "PUSCH Pathloss Reference RS Update MAC CE", which can save signaling, without adding additional signaling or fields, and reduce the overhead of communication resources.

[0290] Of course, in other implementations of the present application, the indication information in S1110 may also be carried in other MAC CEs or other signaling, for example, in an "SRS Pathloss Reference RS Update MAC CE." The embodiments of the present application do not limit the specific carrying method of the indication information.

[0291] The information transmission method provided by the embodiment of the present application is in an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, and when the closed-loop power control of the AS SRS in a cell or carrier follows the PUSCH, the network device can send indication information to the terminal device, and the indication information can indicate: the index value of the PUSCH power control adjustment state associated with the power control adjustment state of the AS SRS resource set. The terminal device can determine whether the AS SRS resource set corresponds to the "TPC command for scheduled PUSCH" field or the "Second TPC command for scheduled PUSCH" field in the DCI format 0_1 ​​or 0_2 based on the index value of the PUSCH power control adjustment state associated with the power control adjustment state of the AS SRS resource set, thereby determining the power control adjustment state of the AS SRS according to the corresponding field, avoiding over-power transmission or insufficient transmission power of the AS SRS, and improving the transmission efficiency of the AS SRS.

[0292] It should be understood that the above is only intended to help those skilled in the art better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Based on the above examples given, those skilled in the art can obviously make various equivalent modifications or changes. For example, some steps in the above method embodiments may not be necessary, or some new steps may be added. Or a combination of any two or any multiple embodiments described above. Such modifications, changes, or combined solutions also fall within the scope of the embodiments of the present application.

[0293] It should also be understood that the division of the modes, situations, categories and embodiments in the embodiments of the present application is only for the convenience of description and should not constitute a special limitation. The features of various modes, categories, situations and embodiments can be combined without contradiction.

[0294] It should also be understood that the various numerical numbers involved in the embodiments of this application are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0295] It should also be understood that the above description of the embodiments of the present application focuses on emphasizing the differences between the various embodiments. The same or similar points that are not mentioned can be referenced with each other. For the sake of brevity, they will not be repeated here.

[0296] The method of the embodiment of the present application is described in detail above with reference to Figures 1 to 11. The communication device of the embodiment of the present application is described in detail below with reference to Figures 12 to 17.

[0297] In this embodiment, the terminal device and the network device (the network device includes the above-mentioned UL only TRP, and DL TRP or traditional base station) can be divided into functional modules according to the above method. For example, it can be divided into various functional modules corresponding to various functions, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0298] It should be noted that the relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0299] The terminal device and network device provided in the embodiments of the present application are used to execute any of the information transmission methods provided in the above method embodiments, and thus can achieve the same effect as the above implementation method. In the case of an integrated unit, the terminal device or network device may include a processing module, as well as an optional storage module and a communication module. Among them, the processing module can be used to control and manage the actions of the terminal device or network device. For example, it can be used to support the terminal device or network device to execute the steps performed by the processing unit. The storage module can be used to support the storage of program code and data, etc. The communication module can be used to support communication between the terminal device or network device and other devices.

[0300] The processing module may be a processor or a controller. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and so on. The storage module may be a memory. The communication module may specifically be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, or the like.

[0301] For example, FIG12 shows a schematic block diagram of a communication device 1200 according to an embodiment of the present application. The communication device 1200 may correspond to the first terminal device described in the above method 300 or the terminal device described in the method 1100. For the sake of brevity, the first terminal device described in the method 300 or the terminal device described in the method 1100 are collectively referred to as a terminal device hereinafter. It is understood that the terminal device may be the first terminal device described in the method 300 or the terminal device described in the method 1100. The communication device 1200 may also be a chip or component applied to the terminal device, and each module or unit in the communication device 1200 is respectively used to perform each action or processing procedure performed by the terminal device in any possible implementation of the above method 300 or method 1100.

[0302] As shown in Figure 12, the communication device 1200 includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit 1210 is configured to perform specific signal transmission and reception under the control of the processing unit 1220. Optionally, the transceiver unit may also be referred to as a transceiver module, and the processing unit may also be referred to as a processing module.

[0303] In some embodiments:

[0304] The transceiver unit 1210 is configured to receive a first DCI, where the first DCI includes at least one TPC instruction field, and each TPC instruction field is used to indicate a power control adjustment state of an SRS.

[0305] The processing unit 1220 is used to: determine the power control adjustment state of the SRS sent by the communication device to the network device on the first carrier based on at least one TPC instruction field corresponding to the communication device, where the SRS sent by the communication device on the first carrier includes: an SRS for antenna switching, an SRS for codebook use, or at least one of an SRS for non-codebook use.

[0306] The communication device provided in the embodiment of the present application, in the UL only TRP scenario, when the closed-loop power control of SRS and PUSCH are separated, at least one "TPC command" field corresponding to the communication device in the first DCI can correspond to or be associated with different SRS resource sets or SRS resources on the same carrier. In this way, the communication device can determine the power control adjustment state of SRS for different purposes on a carrier (or within a cell) based on the at least one TPC command field corresponding to the communication device in the first DCI. The communication device can correctly send AS SRS, CB SRS or NCB SRS, avoid over-power transmission or insufficient transmission power of SRS, and improve the transmission efficiency of SRS.

[0307] For example, the CB SRS or NCB SRS, and AS SRS sent by the communication device to different network devices belong to the same cell, the same carrier or the same BWP. The different network devices include two types: a first network device and a second network device. The first network device is a traditional network device. The first network device can receive uplink signals and uplink data sent by the terminal device, and can also send downlink signals and downlink data to the terminal device. For example, the first network device may include a DL TRP or a traditional base station. In the example of the present application, the second network device only receives uplink signals and uplink data sent by the terminal device, and does not send downlink signals and downlink data to the terminal device. For example, the second network device can be a UL only TRP.

[0308] For example, when the closed-loop power control of the AS SRS sent by the first terminal device is separated from the PUSCH, whether the closed-loop power control of the CB SRS or NCB SRS sent by the first terminal device follows the PUSCH can be configured by the network side.

[0309] It should be understood that the at least one "TPC command" field corresponding to the communication device corresponds to or is associated with the same cell, the same carrier or the same BWP.

[0310] In some possible implementations, the transceiver unit 1210 is further used to: receive configuration information, the configuration information is used to configure: whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH, the SRS resource set includes: an SRS resource set used for antenna switching, an SRS resource set used for a codebook, or at least one of an SRS resource set used for a non-codebook; the processing unit 1220 is further used to: determine, using the configuration information, whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH.

[0311] In some possible implementations, when the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for the non-codebook is consistent with the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the at least one TPC instruction field included in the block corresponding to the communication device indicates: the power control adjustment state of the SRS for antenna switching sent by the communication device on the first carrier.

[0312] In some possible implementations, when the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for non-codebook is separated from the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the multiple TPC instruction fields included in the block corresponding to the communication device respectively indicate: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the power control adjustment state of the SRS used for antenna switching, sent by the communication device on the first carrier.

[0313] In some possible implementations, the multiple TPC instruction fields included in the block corresponding to the communication device respectively correspond to or are associated with different path loss bias values, and the different path loss bias values ​​are used to determine the uplink path loss between the first terminal device and the network device.

[0314] In some possible implementations, the multiple TPC instruction fields included in the block corresponding to the communication device respectively correspond to or are associated with SRSs for different purposes sent by the communication device.

[0315] In some possible implementations, the transceiver unit 1210 is further configured to receive indication information, where the indication information is configured to indicate whether the first DCI includes or does not include an SRS request field, or whether each block includes or does not include an SRS request field.

[0316] In some possible implementations, the indication information is carried in the "fieldTypeFormat2-3" field, or the indication information is carried in the first field in "SRS-TPC-CommandConfig".

[0317] In some possible implementations, the first DCI includes a DCI of format 2_3.

[0318] In other embodiments:

[0319] The transceiver unit 1210 is used to: receive indication information, which is used to indicate: the value of the index of the power control adjustment state associated with the SRS resource set used for antenna switching, and different values ​​of the index of the power control adjustment state correspond to different TPC fields in the second DCI.

[0320] The processing unit 1220 is configured to determine a TPC field in a second DCI associated with an SRS resource set for antenna switching according to a value of an index of a power control adjustment state associated with an SRS resource set for antenna switching.

[0321] The processing unit 1220 is further configured to determine a power control adjustment state of an SRS for antenna switching according to a TPC field in a second DCI associated with an SRS resource set for antenna switching.

[0322] The communication device provided in the embodiment of the present application can receive indication information in an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, and when the usage within a cell or carrier is the closed-loop power control of SRS following PUSCH for antenna switching, the communication device can indicate: the value of the index of the PUSCH power control adjustment state associated with the AS SRS resource set, that is, the indication information can indicate: the power control adjustment state of the AS SRS is indicated by which field of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field. Based on the indication information, the communication device can determine the power control adjustment state of the AS SRS, avoid over-transmission of the AS SRS power or insufficient transmission power, and improve the transmission efficiency of the AS SRS.

[0323] In some possible implementations, the second DCI includes a DCI format of 0_1 or 0_2, and the TPC field included in the second DCI includes a "TPC command for scheduled PUSCH" field and a "Second TPC command for scheduled PUSCH" field.

[0324] In some possible implementations, the indication information is carried in the "sri-PUSCH-PowerControl" field.

[0325] In some possible implementations, the indication information is carried in a PUSCH Pathloss Reference RS Update MAC CE.

[0326] Furthermore, the communication device 1200 may also include a storage unit, and the transceiver unit 1210 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is used to store instructions executed by the transceiver unit 1210 and the processing unit 1220. The transceiver unit 1210, the processing unit 1220, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1220 is used to execute the instructions stored in the storage unit, and the transceiver unit 1210 is used to perform specific signal transmission and reception under the control of the processing unit 1220.

[0327] It should be understood that the specific process of each unit in the communication device 1200 executing the above corresponding steps can be referred to the description of the first terminal device in the method 300 or the terminal device in the method 1100 in the previous text. For the sake of brevity, it is not repeated here.

[0328] It should be understood that the transceiver unit 1210 may be a transceiver, an input / output interface, or an interface circuit. The storage unit may be a memory. The processing unit 1220 may be implemented by a processor.

[0329] For example, as shown in FIG13 , communication device 1300 may include a processor 1310, a memory 1320, a transceiver 1330, and a bus system 1340. The various components of communication device 1300 are coupled together via bus system 1340. Bus system 1340, in addition to a data bus, may also include a power bus, a control bus, and a status signal bus. However, for clarity, various buses are labeled as bus system 1340 in FIG13 . For ease of illustration, FIG13 is only schematically illustrated.

[0330] The communication device 1200 shown in FIG12 or the communication device 1300 shown in FIG13 can implement the steps performed by the first terminal device in the aforementioned method 300 or the terminal device in the aforementioned method 1100. Similar descriptions can refer to the descriptions of the aforementioned corresponding methods. To avoid repetition, they are not repeated here.

[0331] It should also be understood that the communication device 1200 shown in Figure 12 or the communication device 1300 shown in Figure 13 can be a terminal device, or the terminal device can include the communication device 1200 shown in Figure 12 or the communication device 1300 shown in Figure 13.

[0332] Exemplarily, Figure 14 shows a schematic block diagram of a communication device 1400 of an embodiment of the present application. The communication device 1400 may correspond to each network device described in the above method 300 or method 1100 (for example, including UL only TRP, and DL TRP or traditional base station), or may be a chip or component applied to each network device, and each module or unit in the communication device 1400 is respectively used to execute each action or processing process performed by each network device (for example, including UL only TRP, and DL TRP or traditional base station) in any possible implementation of the above method 300 or method 1100.

[0333] As shown in Figure 14, the communication device 1400 may include a processing unit 1410 and a transceiver unit 1420. The transceiver unit 1420 is configured to perform specific signal transmission and reception under the control of the processing unit 1410. The processing unit may also be referred to as a processing module, and the transceiver unit may also be referred to as a communication unit or communication module.

[0334] In some embodiments:

[0335] The processing unit 1410 is configured to generate a first DCI, where the first DCI includes at least one TPC instruction field, and each TPC instruction field is used for a power control adjustment state of an SRS.

[0336] The transceiver unit 1420 is used to: send a first DCI to the first terminal device, wherein at least one TPC instruction field corresponding to the first terminal device is used to indicate the closed-loop power control adjustment state of the SRS sent by the first terminal device to the network device on the first carrier, and the SRS sent by the first terminal device on the first carrier includes: an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

[0337] In the communication device provided in the embodiment of the present application, when the closed-loop power control of SRS for different purposes is separated from PUSCH, multiple "TPC command" fields in the first DCI (for example, DCI format 2_3) sent by the communication device to the terminal device can be associated with or correspond to SRS within a carrier, a cell, or a BWP. The SRS within a cell includes: AS SRS, CB SRS, or NCB SRS, etc. In other words, the multiple "TPC command" fields in the first DCI can indicate the power control adjustment state of SRS within a cell, a carrier, or a BWP, so that the terminal device can determine the power control adjustment state of SRS within the same cell, the same carrier, or the same BWP. The terminal device can then correctly send AS SRS, CB SRS, or NCB SRS according to the power control adjustment state of the SRS, avoid over-transmission of SRS power or insufficient transmission power, and improve the transmission efficiency of SRS.

[0338] In some possible implementations, the transceiver unit 1420 is also used to: send configuration information to the first terminal device, the configuration information is used to configure: whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH, the SRS resource set includes: an SRS resource set used for antenna switching, an SRS resource set used for a code book, or at least one of an SRS resource set used for a non-code book.

[0339] In some possible implementations, when the power control adjustment state of the SRS resource set for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set for codebook use or the SRS resource set for non-codebook use is consistent with the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the at least one TPC instruction field included in the block corresponding to the first terminal device indicates: the power control adjustment state of the SRS for antenna switching sent by the first terminal device on the first carrier.

[0340] In some possible implementations, when the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for non-codebook is separated from the power control adjustment state of the PUSCH, the first DCI includes at least one block, each block includes at least one TPC instruction, and the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively indicate: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the SRS used for antenna switching, sent by the first terminal device on the first carrier.

[0341] In some possible implementations, the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively correspond to or are associated with different path loss bias values, and the different path loss bias values ​​are used to determine the uplink path loss between the first terminal device and the network device.

[0342] In some possible implementations, the multiple TPC instruction fields included in the block corresponding to the first terminal device respectively correspond to or are associated with SRSs for different purposes sent by the first terminal device.

[0343] In some possible implementations, the transceiver unit 1420 is further used to send indication information to the first terminal device, where the indication information is used to indicate whether the first DCI includes or does not include the SRS request field, or whether each block includes or does not include the SRS request field.

[0344] In some possible implementations, the indication information is carried in the "fieldTypeFormat2-3" field, or the indication information is carried in the first field in "SRS-TPC-CommandConfig".

[0345] In some possible implementations, the first DCI includes a DCI of format 2_3.

[0346] In other embodiments:

[0347] Processing unit 1410 is used to: generate indication information, which is used to indicate: the value of the index of the power control adjustment state associated with the SRS resource set used for antenna switching, different values ​​of the index of the power control adjustment state correspond to different TPC fields in the second DCI, and different TPC fields in the second DCI respectively indicate the closed-loop power control adjustment state of PUSCH.

[0348] The transceiver unit 1420 is used to send the indication information to the terminal device.

[0349] The communication device provided in the embodiment of the present application can send indication information to the terminal device in an asymmetric downlink single TRP and uplink multi-TRP (UL M-TRP) communication system, and when the usage within a cell or carrier is the closed-loop power control of SRS following PUSCH for antenna switching, the communication device can indicate: the value of the index of the PUSCH power control adjustment state associated with the AS SRS resource set, that is, the indication information can indicate: the power control adjustment state of AS SRS is indicated by which field of the "TPC command for scheduled PUSCH" field and the "Second TPC command for scheduled PUSCH" field. The terminal device can determine the power control adjustment state of AS SRS according to the indication information, avoid over-transmission of AS SRS power or insufficient transmission power, and improve the transmission efficiency of AS SRS.

[0350] In some possible implementations, the second DCI includes a DCI format of 0_1 or 0_2, and the TPC field included in the second DCI includes a "TPC command for scheduled PUSCH" field and a "Second TPC command for scheduled PUSCH" field.

[0351] In some possible implementations, the indication information is carried in the "sri-PUSCH-PowerControl" field.

[0352] In some possible implementations, the indication information is carried in a PUSCH Pathloss Reference RS Update MAC CE.

[0353] It should be understood that the specific process of each unit in the communication device 1400 executing the above corresponding steps can be referred to the description of each network device (for example, including UL only TRP, and DL TRP or traditional base station) described in the previous text in combination with method 300 or method 1100. For the sake of brevity, it will not be repeated here.

[0354] Optionally, the transceiver unit 1420 may include a receiving unit (module) and a sending unit (module), configured to execute the steps of the network device receiving information and sending information in the embodiment of the aforementioned method 800.

[0355] Furthermore, the communication device 1400 may also include a storage unit. The transceiver unit 1420 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is configured to store instructions executed by the transceiver unit 1420 and the processing unit 1410. The transceiver unit 1420, the processing unit 1410, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1410 is configured to execute the instructions stored in the storage unit, and the transceiver unit 1420 is configured to perform specific signal transmission and reception under the control of the processing unit 1410.

[0356] It should be understood that the transceiver unit 1420 may be a transceiver, an input / output interface, or an interface circuit. The storage unit may be a memory. The processing unit 1410 may be implemented by a processor. As shown in FIG15 , the communication device 1500 may include a processor 1510, a memory 1520, and a transceiver 1530.

[0357] The communication device 1400 shown in FIG14 or the communication device 1500 shown in FIG15 can implement the steps performed by each network device described in the aforementioned method 300 or method 1100. Similar descriptions can refer to the descriptions in the aforementioned corresponding methods. To avoid repetition, they are not repeated here.

[0358] It should also be understood that the communication device 1400 shown in FIG. 14 or the communication device 1500 shown in FIG. 15 may be a network device, or a network device may include the communication device 1400 shown in FIG. 14 or the communication device 1500 shown in FIG. 15 .

[0359] It should also be understood that the division of units in the above device is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, the units in the device can all be implemented in the form of software called through processing elements; or all be implemented in the form of hardware; or some units can be implemented in the form of software called through processing elements, and some units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or it can be integrated into a certain chip of the device. In addition, it can also be stored in a memory in the form of a program, and called by a certain processing element of the device to execute the function of the unit. Here, the processing element can also be called a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each unit above can be implemented by the integrated logic circuit of the hardware in the processor element or in the form of software called through the processing element.

[0360] In one example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASICs), one or more DSPs, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0361] Figure 16 is a schematic diagram of the structure of a terminal device 1600 provided in this application. The aforementioned communication device 1200 or communication device 1300 can be configured in terminal device 1600. Alternatively, the communication device 1200 or communication device 1300 itself can be terminal device 1600. In other words, terminal device 1600 can perform the actions performed by the terminal device in the aforementioned method 300 or method 1100. Optionally, for ease of illustration, Figure 16 only shows the main components of the terminal device. As shown in Figure 16, terminal device 1600 includes a processor, memory, control circuitry, an antenna, and input / output devices.

[0362] The processor is primarily used to process communication protocols and communication data, control the entire terminal device, execute software programs, and process software program data, for example, to support the terminal device in executing the actions described in the above-mentioned information transmission method embodiments. The memory is primarily used to store software programs and data, such as the SRS power control adjustment state and DCI format 2_3 described in the above-mentioned embodiments. The control circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The control circuit and antenna together can also be referred to as a transceiver, which is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. For example, this includes receiving the first information described in the above-mentioned embodiments. Input / output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0363] When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When signaling (such as the first DCI or the second DCI mentioned above) is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0364] Those skilled in the art will appreciate that, for ease of explanation, FIG16 shows only one memory and processor. In an actual terminal device, multiple processors and memories may exist. The memory may also be referred to as a storage medium or storage device, etc., and this embodiment of the application does not limit this.

[0365] For example, a processor may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily responsible for processing communication protocols and communication data, while the CPU is primarily responsible for controlling the entire terminal device, executing software programs, and processing data from software programs. The processor in Figure 16 integrates the functions of both a baseband processor and a CPU. Those skilled in the art will appreciate that the baseband processor and the CPU may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple CPUs to enhance its processing capabilities, and that the various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The CPU may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored as a software program in a storage unit, with the processor executing the software program to implement the baseband processing functionality.

[0366] For example, in the embodiment of the present application, the antenna and control circuit with transceiver functions can be regarded as the transceiver unit 1601 of the terminal device 1600, and the processor with processing function can be regarded as the processing unit 1602 of the terminal device 1600. As shown in Figure 16, the terminal device 1600 includes a transceiver unit 1601 and a processing unit 1602. The transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 1601 can be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver unit 1601 can be regarded as a transmitting unit, that is, the transceiver unit 1601 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0367] Figure 17 is a structural diagram of a network device 1700 provided in an embodiment of the present application, which can be used to implement the functions of the network device (such as UL only TRP, DL TRP or traditional base station) in the above method. The network device 1700 includes one or more radio frequency units, such as a remote radio unit (RRU) 1701 and one or more baseband units (BBU) (also known as digital units, DU) 1702. The RRU 1701 can be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 17011 and a radio frequency unit 17012. The RRU 1701 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending the first DCI, the second DCI and indication information in the above embodiment to the terminal device. The BBU 1702 part is mainly used for baseband processing, controlling the base station, etc. The RRU 1701 and the BBU 1702 may be physically arranged together or physically separated, that is, a distributed base station.

[0368] The BBU 1702 is the control center of the base station, which can also be called a processing unit. It is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, etc. For example, the BBU (processing unit) 1702 can be used to control the base station to execute the operation process of the network device in the above method embodiment.

[0369] In one example, the BBU 1702 may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network of a single access standard (such as an LTE system or a 5G system), or may respectively support wireless access networks of different access standards. The BBU 1702 also includes a memory 17021 and a processor 17022. The memory 17021 is used to store necessary instructions and data. For example, the memory 17021 stores the first information in the above embodiment and the effective time of the first information, etc. The processor 17022 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation process of the network device in the above method embodiment. The memory 17021 and the processor 17022 can serve one or more single boards. That is, a memory and a processor can be set separately on each single board. Alternatively, multiple single boards may share the same memory and processor. In addition, necessary circuits may also be set on each single board.

[0370] In one possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of parts 1702 and 1701 can be implemented using SoC technology. For example, they can be implemented using a base station function chip that integrates a processor, memory, antenna interface, and other components. Programs for base station-related functions are stored in the memory, and the processor executes the programs to implement the base station-related functions. Optionally, the base station function chip can also read memory external to the chip to implement the base station-related functions.

[0371] It should be understood that the structure of the network device illustrated in FIG17 is only one possible form and should not constitute any limitation to the embodiments of the present application. The present application does not exclude the possibility of other forms of base station structures that may appear in the future.

[0372] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0373] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an EPROM, an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0374] An embodiment of the present application also provides a communication system, which includes: the above-mentioned terminal device and network equipment (for example, including UL only TRP, and DL TRP or traditional base station).

[0375] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.) means.

[0376] The present application also provides a computer-readable medium for storing computer program code, wherein the computer program includes instructions for executing any of the information transmission methods provided in the above embodiments of the present application. The computer-readable medium may be the memory described in the above examples, and the present application is not limited thereto.

[0377] The present application also provides a computer program product, which includes instructions. When the instructions are executed, the terminal device performs the terminal device operations corresponding to the above method, or the network device (including UL only TRP, DL TRP or traditional base station) performs the network device operations corresponding to the above method.

[0378] The present application also provides a chip, comprising: a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, a pin, or a circuit. The processing unit may execute computer instructions to cause the chip within the communication device to perform any of the information transmission methods provided in the embodiments of the present application.

[0379] Optionally, any one of the communication devices provided in the above embodiments of the present application may include this chip.

[0380] Optionally, the computer instructions are stored in a storage unit.

[0381] Optionally, the storage unit is a storage unit within the chip, such as a register, a cache, etc. The storage unit may also be a storage unit located outside the chip within the communication device, such as a ROM or other type of static storage device that can store static information and instructions, RAM, etc. The processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the above-mentioned RRC signaling transmission method. The processing unit and the storage unit may be decoupled and respectively provided on different physical devices, and connected by wired or wireless means to implement the respective functions of the processing unit and the storage unit, so as to support the chip to implement the various functions in the above-mentioned embodiments. Alternatively, the processing unit and the memory may also be coupled on the same device.

[0382] The terms "system" and "network" are often used interchangeably in this document. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates an "or" relationship between the related objects.

[0383] Various objects such as various messages / information / equipment / systems / devices / actions / operations / processes that may appear in this application are named. It is understandable that these specific names do not constitute a limitation on the relevant objects. The names assigned may change with factors such as the scene, context or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from the functions and technical effects embodied / executed in the technical solution.

[0384] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0385] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0386] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0387] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0388] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for information transmission, characterized in that: The method comprises: receiving a first DCI, the first DCI including at least one TPC command field, each TPC command field being used for a power control adjustment state of an SRS; According to at least one TPC instruction field corresponding to the first terminal device, the power control adjustment state of the SRS sent by the first terminal device to the network device is determined, and the SRS sent by the first terminal device includes: an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

2. The method according to claim 1, characterized in that The method further comprises: receiving configuration information, the configuration information being used to configure whether a power control adjustment state of an SRS resource set is consistent with a power control adjustment state of a PUSCH, the SRS resource set comprising at least one of an SRS resource set for antenna switching, an SRS resource set for a codebook, or an SRS resource set for a non-codebook purpose; It is determined according to the configuration information whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH.

3. A method for information transmission, characterized in that: The method comprises: Generate a first DCI, the first DCI including at least one TPC command field, each TPC command field being used for a power control adjustment state of an SRS; The first DCI is sent to a first terminal device, wherein at least one TPC instruction field corresponding to the first terminal device is used for a closed-loop power control adjustment state of an SRS sent by the first terminal device to a network device, and the SRS sent by the first terminal device includes at least one of an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

4. The method according to claim 3, characterized in that The method further comprises: Configuration information is sent to the first terminal device, where the configuration information is used to configure: whether the power control adjustment state of the SRS resource set is consistent with the power control adjustment state of the PUSCH, and the SRS resource set includes: an SRS resource set for antenna switching, an SRS resource set for a codebook, or at least one of an SRS resource set for a non-codebook purpose.

5. The method according to any one of claims 1 to 4, characterized in that When the power control adjustment state of the SRS resource set for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set for codebook use or the SRS resource set for non-codebook use is consistent with the power control adjustment state of the PUSCH, at least one TPC instruction field corresponding to the first terminal device is used for the power control adjustment state of the SRS for antenna switching sent by the first terminal device.

6. The method according to any one of claims 1 to 4, characterized in that When the power control adjustment state of the SRS resource set used for antenna switching is separated from the power control adjustment state of the PUSCH, and the power control adjustment state of the SRS resource set used for the codebook or the SRS resource set used for non-codebook is separated from the power control adjustment state of the PUSCH, the multiple TPC instruction fields corresponding to the first terminal device are respectively used for the following sent by the first terminal device: the power control adjustment state of the SRS used for the codebook or the SRS used for non-codebook, and the power control adjustment state of the SRS used for antenna switching.

7. The method according to claim 6, characterized in that The multiple TPC instruction fields corresponding to the first terminal device respectively correspond to or are associated with different path loss bias values, and the different path loss bias values are used to determine the uplink path loss between the first terminal device and the network device.

8. The method according to claim 6, characterized in that The multiple TPC instruction fields corresponding to the first terminal device respectively correspond to or are associated with SRSs for different purposes sent by the first terminal device.

9. The method according to claim 6, characterized in that The multiple TPC instruction fields corresponding to the first terminal device respectively correspond to or are associated with different SRS resource sets sent by the first terminal device.

10. The method according to any one of claims 1 to 9, characterized in that The first DCI includes a DCI format of 2_3.

11. A method for information transmission, characterized in that: The method comprises: receiving first indication information, where the first indication information is used to indicate: a value of an index of a power control adjustment state associated with an SRS resource set, where different values of the index of the power control adjustment state correspond to different TPC fields in a second DCI; The TPC field in the second DCI associated with the SRS resource set is determined according to the value of the index of the power control adjustment state associated with the SRS resource set.

12. The method according to claim 11, characterized in that The method further comprises: Determine the power control adjustment state of the SRS resource set according to the TPC field in the second DCI associated with the SRS resource set, where the SRS resource set includes: an SRS resource set for antenna switching, an SRS resource set for a codebook, or at least one of an SRS resource set for a non-codebook purpose.

13. A method for information transmission, characterized in that: The method comprises: Generate first indication information, where the first indication information is used to indicate: a value of an index of a power control adjustment state associated with an SRS resource set, where different values of the index of the power control adjustment state correspond to different TPC fields in the second DCI, and where the different TPC fields in the second DCI respectively indicate closed-loop power control adjustment states of a PUSCH; Send the first indication information to the terminal device.

14. The method according to any one of claims 11 to 13, characterized in that The TPC field included in the second DCI includes at least one of a "TPC command for scheduled PUSCH" field or a "Second TPC command for scheduled PUSCH" field.

15. The method according to any one of claims 11 to 14, characterized in that The second DCI includes a DCI format of 0-1 or 0-2.

16. The method according to any one of claims 11 to 15, characterized in that The first indication information is carried in the "sri-PUSCH-PowerControl" field, or the first indication information is carried in the PUSCH Pathloss Reference RS Update MAC CE.

17. A method for information transmission, characterized in that: The method comprises: receiving a third DCI, where the third DCI includes an indication field and at least one TPC command field, where the indication field is used to indicate an index of a power control adjustment state of an SRS; According to the indication field and the at least one TPC instruction field, the power control adjustment state of the SRS sent by the first terminal device to the network device is determined, and the SRS sent by the first terminal device includes: an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose.

18. The method according to claim 17, characterized in that The method further comprises: Second indication information is received, where the second indication information is used to indicate: the value of the index of the power control adjustment state associated with SRS resource sets of different indexes; or the value of the index of the power control adjustment state associated with SRS resource sets of different uses.

19. A method for information transmission, characterized in that: The method comprises: Generate a third DCI, the third DCI including an indication field and at least one TPC instruction field, the indication field being used to indicate an index of a power control adjustment state of an SRS, the indication field and the at least one TPC instruction field being used by a first terminal device to determine a power control adjustment state of an SRS sent to a network device, the SRS sent by the first terminal device including: at least one of an SRS for antenna switching, an SRS for a codebook, or an SRS for a non-codebook purpose; Send the third DCI to the first terminal device.

20. The method according to claim 19, characterized in that The method further comprises: Send second indication information to the first terminal device, where the second indication information is used to indicate: the value of the index of the power control adjustment state associated with the SRS resource sets of different indexes; or the value of the index of the power control adjustment state associated with the SRS resource sets of different purposes.

21. The method according to any one of claims 17 to 20, characterized in that The third DCI includes a DCI format of 2_3.

22. A communication device, characterized in that: include: A unit for performing the steps of the method according to any one of claims 1 to 10, or a unit for performing the steps of the method according to any one of claims 11 to 16, or a unit for performing the steps of the method according to any one of claims 17 to 21.

23. A communication device, characterized in that: The method comprises at least one processor and an interface circuit, wherein the at least one processor is configured to execute: the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 16, or the method according to any one of claims 17 to 21.

24. A communication device, characterized in that: include: A processor, the processor being coupled to a memory, the memory being used to store a program or instruction, which, when executed by the processor, causes the apparatus to perform: the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 16, or the method according to any one of claims 17 to 21.

25. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which includes program instructions, and when the program instructions are executed by a processor, the processor executes: the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 16, or the method according to any one of claims 17 to 21.

26. A chip, characterized in that: It includes: a processor, configured to call and run a computer program from a memory, so that a communication device equipped with the chip executes: the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 16, or the method according to any one of claims 17 to 21.

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