An indication method, a terminal device and a radio access network device

Abstract

The application provides an indication method, a terminal device and a radio access network device, which can save signaling overhead of precoding indication information and transmission power control indication information in a downlink control information (DCI) field received by the terminal device. The indication method comprises the following steps: a terminal device receives SRS resource indication information (SRI), wherein an index value included in the SRI belongs to a first index value set, the first index value set includes a first index value and a second index value, the first index value and the second index value correspond to the same plurality of SRS resources, and the first index value and the second index value correspond to different SRS resource sets to be adjusted in power; and the terminal device transmits physical uplink shared channel (PUSCH) data according to the SRI.

Description

Technical Field

[0001] This application relates to the field of communications, and in particular to an indication method, terminal equipment, and wireless access network equipment. Background Technology

[0002] For precoding indications of uplink transmissions (e.g., codebook-based (CB) or non-codebook-based (NCB) physical uplink shared channel (PUSCH) transmissions), radio access network (RAN) devices can indicate them through the transmission precoding matrix indicator (TPMI) field or the sounding reference signal indication (SRI) field in the downlink control information (DCI). For power adjustment indications of PUSCH transmissions, RAN devices can indicate them through the transmitter power control (TPC) field in the DCI. When there are multiple RAN devices, such as multiple transmit-receive points (TRPs), ... Figure 1 When two radio access network (RAN) devices receive PUSCH data, the RAN devices need to reuse existing indication fields for corresponding indications, such as TPMI, SRI, and TPC. This increases the signaling overhead of these indication fields exponentially with the number of TRPs, impacting the performance and cost of DCI transmission. Therefore, reducing DCI signaling overhead is a pressing issue. Summary of the Invention

[0003] This application provides an indication method that enables the saving of signaling overhead in transmitting power control indication information in the downlink control information (DCI) field received by the terminal device.

[0004] In a first aspect, an indication method is provided, comprising: a terminal device receiving resource indication information (SRI) of a sounding reference signal (SRS), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to multiple SRS resources of the same type, the SRS resources corresponding to the first index value and the second index value belonging to multiple sets of SRS resources, and the first index value and the second index value respectively corresponding to different sets of SRS resources with power to be adjusted; the terminal device transmitting physical uplink shared channel (PUSCH) data according to the SRI.

[0005] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources whose power to be adjusted different for the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources whose power to be adjusted, thereby saving the signaling overhead of the transmission power control indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when receiving the index of the SRS resource in the SRI, the terminal device can determine not only the SRS resource but also the SRS resource with the power to be adjusted, thus saving the signaling overhead of transmission power control indication information. It should also be understood that when the terminal device sends Physical Uplink Shared Channel (PUSCH) data according to the SRI, in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0006] In one possible implementation, the first index value set includes the first index value, the second index value, and the third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resource corresponding to the third index value belongs to 1 SRS resource set.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the method includes: a terminal device receiving SRS resource indication information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to the same SRS resource, the SRS resource corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the SRS resource corresponding to the first index value and the second index value belonging to multiple SRS resource sets; the terminal device sending a PUSCH according to the SRI.

[0008] In this embodiment of the application, the first index value and the second index value can be used to flexibly indicate the mapping order between SRS resources / SRS resource sets and different time-frequency resources of PUSCH without increasing DCI overhead.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the index value is either the first index value or the second index value. The method further includes: the terminal device receiving Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of the PUSCH transmission corresponding to a first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets; the terminal device determining the first SRS resource set based on the SRI, wherein the first index value and the second index value correspond to different first SRS resource sets.

[0010] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the TPC indication information exponentially according to the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources corresponding to the power to be adjusted different for the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources to be adjusted, thereby saving the signaling overhead of the TPC indication information. For example, both the first index value and the second index value correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Then, when the terminal device receives the index of the SRS resource in the SRI, it can not only determine the SRS resource, but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of the TPC indication information.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: the first SRS resource corresponding to the first index value and the second index value are different, wherein the first SRS resource is the SRS resource that is ordered first in the first SRS resource set.

[0012] In this embodiment of the application, the SRS resources corresponding to the first index value and the second index value are the same, but since the order of the SRS resources (SRS resource set) is different, that is, the first SRS resource is different, the order (or the first SRS resource of each of the first index value and the second index value) can be used to indicate other information, such as the SRS resource of the TPC.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0014] In this embodiment of the application, different SRS resource sets correspond to different TRP transmission channels, and the terminal device transmits the PUSCH data corresponding to different SRS resource sets on different time domain units, frequency domain units, or spatial units.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: the terminal device determining the packet information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the terminal device determining the packet information corresponding to the fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; and the terminal device determining the transmission power of the PUSCH based on the packet information.

[0016] Optionally, in this embodiment, the SRI indication information may include only one of the first index value or the second index value.

[0017] In this embodiment, by associating the packet information corresponding to the fourth index value with the packet information corresponding to the third index value, the configuration signaling of the packet information of the fourth index value can be simplified. Simultaneously, enabling independent power accumulation for each TRP can improve uplink transmission energy efficiency.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the method includes: the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the terminal device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the method includes: the SRS resource corresponding to the fourth index value includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

[0020] In this embodiment of the application, by combining the first SRS resource corresponding to the fourth index value and the second SRS resource corresponding to the third index value, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value, which can simplify the configuration signaling of the packet information of the terminal device.

[0021] Secondly, an indication method is provided, comprising: a radio access network device determining sounding reference signal SRS resource indication information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to the same multiple SRS resources, the SRS resources corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the first index value and the second index value respectively corresponding to different SRS resource sets with power to be adjusted, the SRI being used to instruct a terminal device to send Physical Uplink Shared Channel (PUSCH) data; and the radio access network device sending the SRI.

[0022] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources whose power needs adjustment differ for each of the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources whose power needs adjustment, thereby saving the signaling overhead of transmission power control indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when sending the index of the SRS resource in the SRI, the radio access network device can indicate not only the SRS resource but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of transmission power control indication information. It should also be understood that the SRI used to instruct the terminal device to send Physical Uplink Shared Channel (PUSCH) data means that in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0023] In one possible implementation, the first index value set includes the first index value, the second index value, and the third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resource corresponding to the third index value belongs to 1 SRS resource set.

[0024] In conjunction with the second aspect, in some implementations of the second aspect, the method includes: a radio access network device determining SRS resource indication information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to multiple identical SRS resources, the SRS resources corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the SRI used to instruct a terminal device to send Physical Uplink Shared Channel (PUSCH) data; the radio access network device sending the SRI.

[0025] In this embodiment of the application, the first index value and the second index value can be used to flexibly indicate the mapping order between SRS resources / SRS resource sets and different time-frequency resources of PUSCH without increasing DCI overhead.

[0026] In conjunction with the second aspect, in some implementations of the second aspect, the method includes: the radio access network device determining Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmit power of PUSCH transmission corresponding to a first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets, the index value being either the first index value or the second index value, and the first SRS resource set corresponding to the first index value and the second index value being different; the radio access network device determining the first SRS resource set and determining the SRI based on the first SRS resource set; and the radio access network device transmitting the TPC indication information.

[0027] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of the TPC indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources with different power levels corresponding to these two index values ​​different, each index value can indicate not only SRS resources but also the set of SRS resources with different power levels, thereby saving the signaling overhead of the TPC indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, respectively. SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when sending the index of the SRS resource in the SRI, the radio access network device can indicate not only the SRS resource but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of the TPC indication information. It should also be understood that the SRI used to instruct the terminal device to send Physical Uplink Shared Channel (PUSCH) data means that in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource based on the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0028] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: the first SRS resource corresponding to the first index value and the second index value are different, wherein the first SRS resource is the SRS resource that is ordered first in the first SRS resource set.

[0029] In this embodiment of the application, the SRS resources corresponding to the first index value and the second index value are the same, but since the order of the SRS resources (SRS resource set) is different, that is, the first SRS resource is different, the order (or the first SRS resource of each of the first index value and the second index value) can be used to indicate other information, such as the SRS resource of the TPC.

[0030] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0031] In this embodiment of the application, different SRS resource sets correspond to different TRP transmission channels, and the terminal device transmits the PUSCH data corresponding to different SRS resource sets on different time domain units, frequency domain units, or spatial units.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: the radio access network device determining packet information corresponding to a third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the radio access network device determining packet information corresponding to a fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; and the radio access network device determining the transmission power of the PUSCH based on the packet information.

[0033] In this embodiment of the application, by associating the packet information corresponding to the fourth index value with the packet information corresponding to the third index value, the configuration signaling of the packet information of the fourth index value can be simplified.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, the method includes: the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the radio access network device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the method includes: the SRS resource corresponding to the fourth index value includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

[0036] In this embodiment of the application, by combining the first SRS resource corresponding to the fourth index value and the second SRS resource corresponding to the third index value, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value, which can simplify the configuration signaling of packet information of the radio access network device.

[0037] Thirdly, a terminal device is provided, comprising: a receiving unit, the receiving unit being configured to receive Sound Reference Signal Resource Indication Information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to the same multiple SRS resources, the SRS resources corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the first index value and the second index value respectively corresponding to different SRS resource sets with adjustable power; and a transmitting unit, the transmitting unit transmitting Physical Uplink Shared Channel (PUSCH) data according to the SRI.

[0038] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources whose power to be adjusted different for the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources whose power to be adjusted, thereby saving the signaling overhead of the transmission power control indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when receiving the index of the SRS resource in the SRI, the terminal device can determine not only the SRS resource but also the SRS resource with the power to be adjusted, thus saving the signaling overhead of transmission power control indication information. It should also be understood that when the terminal device sends Physical Uplink Shared Channel (PUSCH) data according to the SRI, in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0039] In one possible implementation, the first index value set includes the first index value, the second index value, and the third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resource corresponding to the third index value belongs to 1 SRS resource set.

[0040] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device includes: a receiving unit, the receiving unit being configured to receive probe reference signal SRS resource indication information SRI, the SRI including an index value, the index value belonging to a first index value set, the first index value set including a first index value and a second index value, the first index value and the second index value corresponding to the same SRS resource, the SRS resource corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the SRS resource corresponding to the first index value and the second index value belonging to multiple SRS resource sets; and a sending unit, the sending unit being configured to send PUSCH according to the SRI.

[0041] In this embodiment of the application, the first index value and the second index value can be used to flexibly indicate the mapping order between SRS resources / SRS resource sets and different time-frequency resources of PUSCH without increasing DCI overhead.

[0042] In conjunction with the third aspect, in some implementations of the third aspect, the index value is either the first index value or the second index value. The terminal device further includes: the receiving unit is further configured to receive Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of the PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets; and a processing unit, the processing unit being configured to determine the first SRS resource set according to the SRI, wherein the first index value and the second index value correspond to different first SRS resource sets.

[0043] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the TPC indication information exponentially according to the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources corresponding to the power to be adjusted different for the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources to be adjusted, thereby saving the signaling overhead of the TPC indication information. For example, both the first index value and the second index value correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Then, when the terminal device receives the index of the SRS resource in the SRI, it can not only determine the SRS resource, but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of the TPC indication information.

[0044] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device further includes: the first SRS resource corresponding to the first index value and the second index value are different, wherein the first SRS resource is the SRS resource that is ordered first in the first SRS resource set.

[0045] In this embodiment of the application, the SRS resources corresponding to the first index value and the second index value are the same, but since the order of the SRS resources (SRS resource set) is different, that is, the first SRS resource is different, the order (or the first SRS resource of each of the first index value and the second index value) can be used to indicate other information, such as the SRS resource of the TPC.

[0046] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device further includes: the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0047] In this embodiment of the application, different SRS resource sets correspond to different TRP transmission channels, and the terminal device transmits the PUSCH data corresponding to different SRS resource sets on different time domain units, frequency domain units, or spatial units.

[0048] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device further includes: the processing unit is further configured to determine the packet information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the processing unit determines the packet information corresponding to the fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; and the processing unit determines the transmission power of the PUSCH based on the packet information.

[0049] In this embodiment of the application, by associating the packet information corresponding to the fourth index value with the packet information corresponding to the third index value, the configuration signaling of the packet information of the fourth index value can be simplified.

[0050] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device includes: the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the processing unit is further configured to determine the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set, respectively.

[0051] In conjunction with the third aspect, in some implementations of the third aspect, the terminal device includes: the SRS resource corresponding to the fourth index value includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value.

[0052] In this embodiment of the application, by combining the first SRS resource corresponding to the fourth index value and the second SRS resource corresponding to the third index value, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value, which can simplify the configuration signaling of the packet information of the terminal device.

[0053] Fourthly, a wireless access network device is provided, the wireless access network device comprising: a processing unit configured to determine SRS resource indication information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to the same multiple SRS resources, the SRS resources corresponding to the first index value and the second index value belonging to multiple SRS resource sets, and the first index value and the second index value respectively corresponding to different SRS resource sets with power to be adjusted, the SRI being used to instruct a terminal device to send Physical Uplink Shared Channel (PUSCH) data; and a sending unit configured to send the SRI.

[0054] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources whose power needs adjustment differ for each of the two index values, each index value can indicate not only the SRS resource but also the set of SRS resources whose power needs adjustment, thereby saving the signaling overhead of transmission power control indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, and SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when sending the index of the SRS resource in the SRI, the radio access network device can indicate not only the SRS resource but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of transmission power control indication information. It should also be understood that the SRI used to instruct the terminal device to send Physical Uplink Shared Channel (PUSCH) data means that in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0055] In one possible implementation, the first index value set includes the first index value, the second index value, and the third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resource corresponding to the third index value belongs to 1 SRS resource set.

[0056] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the radio access network device includes: a processing unit, the processing unit being configured to determine SRS resource indication information (SRI), the SRI including an index value, the index value belonging to a first set of index values, the first set of index values ​​including a first index value and a second index value, the first index value and the second index value corresponding to multiple identical SRS resources, the SRS resources corresponding to the first index value and the second index value belonging to multiple sets of SRS resources, and the SRI being used to instruct a terminal device to send Physical Uplink Shared Channel (PUSCH) data; and a sending unit, the sending unit being configured to send the SRI.

[0057] In this embodiment of the application, the first index value and the second index value can be used to flexibly indicate the mapping order between SRS resources / SRS resource sets and different time-frequency resources of PUSCH without increasing DCI overhead.

[0058] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device includes: the processing unit is further configured to determine Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of PUSCH transmission corresponding to a first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets, the index value being either the first index value or the second index value, and the first SRS resource set corresponding to the first index value and the second index value being different; the processing unit determines the first SRS resource set and determines the SRI based on the first SRS resource set; the transmitting unit transmits the TPC indication information.

[0059] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of the TPC indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, two index values ​​can correspond to multiple identical SRS resources. Furthermore, by making the sets of SRS resources with different power levels corresponding to these two index values ​​different, each index value can indicate not only SRS resources but also the set of SRS resources with different power levels, thereby saving the signaling overhead of the TPC indication information. For example, both the first and second index values ​​correspond to SRS resource 1 and SRS resource 2, respectively. SRS resource 1 belongs to the first SRS resource set and corresponds to the channel for transmitting data in the first TRP. The SRS resource with the power to be adjusted corresponding to the first index value is SRS resource 1, and the SRS resource with the power to be adjusted corresponding to the second index value is SRS resource 2. Therefore, when sending the index of the SRS resource in the SRI, the radio access network device can indicate not only the SRS resource but also the SRS resource with the power to be adjusted, thereby saving the signaling overhead of the TPC indication information. It should also be understood that the SRI used to instruct the terminal device to send Physical Uplink Shared Channel (PUSCH) data means that in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource based on the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of PUSCH according to the number of SRS resources indicated by SRI, and determines the corresponding SRS resources according to the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission according to the precoding matrix.

[0060] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device further includes: the first SRS resource corresponding to the first index value and the second index value are different, wherein the first SRS resource is the SRS resource that is ordered first in the first SRS resource set.

[0061] In this embodiment of the application, the SRS resources corresponding to the first index value and the second index value are the same, but since the order of the SRS resources (SRS resource set) is different, that is, the first SRS resource is different, the order (or the first SRS resource of each of the first index value and the second index value) can be used to indicate other information, such as the SRS resource of the TPC.

[0062] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device further includes: the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0063] In this embodiment of the application, different SRS resource sets correspond to different TRP transmission channels, and the terminal device transmits the PUSCH data corresponding to different SRS resource sets on different time domain units, frequency domain units, or spatial units.

[0064] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device further includes: the processing unit determining packet information corresponding to a third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the processing unit determining packet information corresponding to a fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; and the processing unit determining the transmission power of the PUSCH based on the packet information.

[0065] In this embodiment of the application, by associating the packet information corresponding to the fourth index value with the packet information corresponding to the third index value, the configuration signaling of the packet information of the fourth index value can be simplified.

[0066] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device includes: the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the processing unit respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0067] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the wireless access network device includes: the SRS resource corresponding to the fourth index value includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value.

[0068] In this embodiment of the application, by combining the first SRS resource corresponding to the fourth index value and the second SRS resource corresponding to the third index value, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the third index value, which can simplify the configuration signaling of packet information of the radio access network device.

[0069] Fifthly, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed, causes a device to execute instructions of the method as described in the first aspect or any possible implementation thereof, or causes a device to execute instructions of the method as described in the second aspect or any possible implementation thereof.

[0070] A sixth aspect provides a chip system comprising: a processor for calling and running a computer program from a memory, causing a communication device on which the chip system is mounted to perform the method as described in the first aspect or any possible implementation thereof; or causing the communication device on which the chip system is mounted to perform the method as described in the second aspect or any possible implementation thereof.

[0071] A seventh aspect provides a communication system, comprising: a first terminal device for performing the method as described in the first aspect or any possible implementation thereof; and a first wireless access network device for performing the method as described in the second aspect or any possible implementation thereof.

[0072] Eighthly, a wireless communication apparatus is provided, comprising: a unit for implementing the method as described in the first aspect or any possible implementation thereof; or a unit for implementing the method as described in the second aspect or any possible implementation thereof.

[0073] In a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when executed by a terminal device, causes the terminal device to perform the method as described in the first aspect or any possible implementation thereof.

[0074] In a tenth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when executed by a wireless access network device, causes the wireless access network device to perform the method as described in the second aspect or any possible implementation thereof.

[0075] Eleventhly, an indication method is provided, comprising: a terminal device receiving first indication information, the first indication information being used to indicate the transmission layer number and precoding information of a Physical Uplink Shared Channel (PUSCH), the precoding information including information of two precoding matrices; the two precoding matrices having the same dimension, and the two precoding matrices having the same number of non-zero elements in the same columns; the terminal device transmitting PUSCH data according to the first indication information.

[0076] This application embodiment can be applied to scenarios where a terminal device sends data to multiple TRPs, such as sending data to two TRPs. Currently, the size of the bit field used to indicate the transport layer number and TPMI index is based on the size of all pairwise combinations of TPMIs. In this application embodiment, by limiting the precoding matrices indicating the pairwise combinations of TPMIs to have the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices, the number of pairwise combinations of TPMIs is reduced, thereby reducing the size of the bit field used to indicate the transport layer number and TPMI index, and saving the signaling overhead of this bit field.

[0077] In conjunction with the eleventh aspect, in some implementations of the eleventh aspect, the non-zero elements in the same columns of the two precoding matrices are in the same position.

[0078] In this embodiment of the application, by further defining the characteristics of the two precoding matrices, namely that the non-zero elements in the same column of the two precoding matrices are in the same position, the size of the bit field in which the index value used to indicate the transport layer number and TPMI index is located is further reduced, thereby further saving the signaling overhead of the bit field.

[0079] In conjunction with the eleventh aspect, in some implementations of the eleventh aspect, the terminal device sending PUSCH data according to the first instruction information includes: the two precoding matrices include a first precoding matrix and a second precoding matrix, the first precoding matrix corresponds to a first time-frequency resource occupied by the PUSCH data, and the second precoding matrix corresponds to a second time-frequency resource occupied by the PUSCH data, wherein the first time-frequency resource and the second time-frequency resource do not overlap; the terminal device sends the PUSCH data on the first time-frequency resource and the second time-frequency resource.

[0080] In a twelfth aspect, an indication method is provided, comprising: a radio access network device determining first indication information, the first indication information being used to indicate the transmission layer number and precoding information of a Physical Uplink Shared Channel (PUSCH), the precoding information including information of two precoding matrices; the two precoding matrices having the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices; and the radio access network device transmitting the first indication information.

[0081] This application embodiment can be applied to scenarios where a terminal device sends data to multiple TRPs, such as sending data to two TRPs. Currently, the bit field size of the bit field containing the index value indicating the transport layer number and TPMI index sent by the radio access network device to the terminal device is the bit field size based on all pairwise combinations of TPMIs. In this application embodiment, by limiting the precoding matrices indicating the pairwise combinations of TPMIs to have the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices, the number of pairwise combinations of TPMIs is reduced, thereby reducing the size of the bit field containing the index value indicating the transport layer number and TPMI index, and saving the signaling overhead of this bit field.

[0082] In conjunction with the twelfth aspect, in some implementations of the twelfth aspect, the non-zero elements in the same columns of the two precoding matrices are in the same position.

[0083] In this embodiment of the application, by further defining the characteristics of the two precoding matrices, namely that the non-zero elements in the same column of the two precoding matrices are in the same position, the size of the bit field in which the index value used to indicate the transport layer number and TPMI index is located is further reduced, thereby further saving the signaling overhead of the bit field.

[0084] In a thirteenth aspect, a terminal device is provided, the terminal device comprising: a receiving unit configured to receive first indication information, the first indication information being configured to indicate the transmission layer number and precoding information of a Physical Uplink Shared Channel (PUSCH), the precoding information including information of two precoding matrices; the two precoding matrices having the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices; and a sending unit configured to send PUSCH data according to the first indication information.

[0085] This application embodiment can be applied to scenarios where a terminal device sends data to multiple TRPs, such as sending data to two TRPs. Currently, the size of the bit field used to indicate the transport layer number and TPMI index is based on the size of all pairwise combinations of TPMIs. In this application embodiment, by limiting the precoding matrices indicating the pairwise combinations of TPMIs to have the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices, the number of pairwise combinations of TPMIs is reduced, thereby reducing the size of the bit field used to indicate the transport layer number and TPMI index, and saving the signaling overhead of this bit field.

[0086] In conjunction with aspect thirteen, in some implementations of aspect thirteen, the non-zero elements in the same columns of the two precoding matrices are in the same position.

[0087] In this embodiment of the application, by further defining the characteristics of the two precoding matrices, namely that the non-zero elements in the same column of the two precoding matrices are in the same position, the size of the bit field in which the index value used to indicate the transport layer number and TPMI index is located is further reduced, thereby further saving the signaling overhead of the bit field.

[0088] In conjunction with aspect thirteen, in some implementations of aspect thirteen, the sending unit sending PUSCH data according to the first indication information includes: the two precoding matrices include a first precoding matrix and a second precoding matrix, the first precoding matrix corresponds to a first time-frequency resource occupied by the PUSCH data, and the second precoding matrix corresponds to a second time-frequency resource occupied by the PUSCH data, wherein the first time-frequency resource and the second time-frequency resource do not overlap; the sending unit sends the PUSCH data on the first time-frequency resource and the second time-frequency resource.

[0089] In a fourteenth aspect, a wireless access network device is provided, the wireless access network device comprising: a processing unit configured to determine first indication information, the first indication information being configured to indicate the transmission layer number and precoding information of a Physical Uplink Shared Channel (PUSCH), the precoding information including information of two precoding matrices; the two precoding matrices having the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices; and a transmitting unit configured to transmit the first indication information.

[0090] This application embodiment can be applied to scenarios where a terminal device sends data to multiple TRPs, such as sending data to two TRPs. Currently, the bit field size of the bit field containing the index value indicating the transport layer number and TPMI index sent by the radio access network device to the terminal device is the bit field size based on all pairwise combinations of TPMIs. In this application embodiment, by limiting the precoding matrices indicating the pairwise combinations of TPMIs to have the same dimension and the same number of non-zero elements in the same columns of the two precoding matrices, the number of pairwise combinations of TPMIs is reduced, thereby reducing the size of the bit field containing the index value indicating the transport layer number and TPMI index, and saving the signaling overhead of this bit field.

[0091] In conjunction with aspect fourteen, in some implementations of aspect fourteen, the non-zero elements in the same columns of the two precoding matrices are in the same position.

[0092] In this embodiment of the application, by further defining the characteristics of the two precoding matrices, namely that the non-zero elements in the same column of the two precoding matrices are in the same position, the size of the bit field in which the index value used to indicate the transport layer number and TPMI index is located is further reduced, thereby further saving the signaling overhead of the bit field.

[0093] In a fifteenth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed, causes a device to execute instructions of the method as described in the eleventh aspect or any possible implementation thereof, or causes a device to execute instructions of the method as described in the twelfth aspect or any possible implementation thereof.

[0094] In a sixteenth aspect, a chip system is provided, comprising: a processor for calling and running a computer program from a memory, causing a communication device on which the chip system is mounted to perform the method as described in the eleventh aspect or any possible implementation thereof; or causing the communication device on which the chip system is mounted to perform the method as described in the twelfth aspect or any possible implementation thereof.

[0095] In a seventeenth aspect, a communication system is provided, comprising: a first terminal device for performing the method as described in the eleventh aspect or any possible implementation thereof; and a first wireless access network device for performing the method as described in the twelfth aspect or any possible implementation thereof.

[0096] Eighteenth aspect: A wireless communication apparatus is provided, comprising: a unit for implementing the method as described in the eleventh aspect or any possible implementation thereof; or a unit for implementing the method as described in the twelfth aspect or any possible implementation thereof.

[0097] In a nineteenth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when executed by a terminal device, causes the terminal device to perform the method as described in the eleventh aspect or any possible implementation thereof.

[0098] In a twentieth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when executed by a wireless access network device, causes the wireless access network device to perform the method as described in the twelfth aspect or any possible implementation thereof.

[0099] A twenty-first aspect provides an indication method, comprising: a terminal device receiving first indication information, the first indication information being used to indicate a first transmission power control (TPC) adjustment amount; the terminal device receiving second indication information, the second indication information being used to indicate at least one first sounding reference signal (SRS) resource and the second indication information being used to indicate a second SRS resource on which the first TPC adjustment amount applies, the second SRS resource being at least one of the first SRS resources; the terminal device transmitting first data on the first SRS resource and adjusting the power corresponding to the second SRS resource according to the first TPC adjustment amount.

[0100] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the TPC indication information exponentially according to the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, the second indication information can indicate both the first SRS resource corresponding to the uplink data transmission and the second SRS resource to which the TPC adjustment applies (here referring to the transmit power of the uplink data corresponding to the SRS resource to which the TPC adjustment applies), and the second SRS resource is at least one of the first SRS resources, thereby saving the signaling overhead of the TPC indication information. It should also be understood that when the terminal device sends the first data on the first SRS resource, in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of the PUSCH based on the number of SRS resources indicated by the SRI, and determines the corresponding SRS resource based on the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission based on this precoding matrix. It should be understood that the power corresponding to the second SRS resource refers to the transmit power of the second data corresponding to the second SRS resource, and the second data is a part of the first data.

[0101] In conjunction with aspect twenty-one, in some implementations of aspect twenty-one, the method further includes: the terminal device determining the first SRS resource and the second SRS resource based on the SRS resource in the first parameter group corresponding to the first identifier in the first mapping relationship, wherein the first mapping relationship is used to indicate the correspondence between multiple identifiers and multiple parameter groups, each parameter group includes at least one SRS resource for transmitting data and the SRS resource to which the TPC adjustment amount in the at least one SRS resource for transmitting data is applied, and the second indication information includes the first identifier.

[0102] In conjunction with aspect 21, in some implementations of aspect 21, the SRS resource to which the TPC adjustment in each parameter group acts belongs to one of at least one SRS resource sets, and the at least one SRS resource set corresponds one-to-one with at least one communication device.

[0103] In conjunction with aspect 21, in some implementations of aspect 21, the terminal device determines a third SRS resource based on a first index corresponding to the second identifier in a second mapping relationship, wherein the third SRS resource is an SRS resource to which the first TPC adjustment amount is accumulated, the second mapping relationship is used to indicate the mapping relationship between multiple identifiers and multiple indices, the first index is an index of the third SRS resource, and the second indication information includes the second identifier.

[0104] In this embodiment of the application, the second identifier can be the same as the first identifier. The third SRS resource and the first TPC adjustment amount are associated through the first index, which enables the TPC values ​​of the third SRS resources with the same first index to be accumulated.

[0105] In conjunction with aspect 21, in some implementations of aspect 21, the second mapping relationship contains a second index and a third index; the terminal device determines the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the second index is 1; the terminal device determines the packet information corresponding to the third index based on the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the third index is greater than 1; the terminal device determines the transmission power of the PUSCH based on the packet information.

[0106] In conjunction with aspect 21, in some implementations of aspect 21, the SRS resources corresponding to the third index include SRS resources belonging to the first SRS resource set and the second SRS resource set; the terminal device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0107] In conjunction with aspect 21, in some implementations of aspect 21, the SRS resource corresponding to the third index includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the second index belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the second index.

[0108] In this embodiment of the application, by combining the first SRS resource corresponding to the third index and the second SRS resource corresponding to the second index, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the second index value, which can simplify the configuration signaling of the packet information of the terminal device.

[0109] In a twenty-second aspect, an indication method is provided, comprising: a radio access network device determining first indication information, the first indication information being used to indicate a first transmission power control (TPC) adjustment amount; the radio access network device determining second indication information, the second indication information being used to indicate at least one first sounding reference signal (SRS) resource and the second indication information being used to indicate a second SRS resource on which the first TPC adjustment amount acts, the second SRS resource being at least one of the first SRS resources; and the radio access network device transmitting the first indication information and the second indication information.

[0110] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of the transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, the second indication information can indicate both the first SRS resource corresponding to the uplink data transmission and the second SRS resource on which the TPC adjustment is applied (here referring to the transmit power of the uplink data corresponding to the SRS resource on which the TPC adjustment is applied), and the second SRS resource is at least one of the first SRS resources, thereby saving the signaling overhead of the TPC indication information.

[0111] In conjunction with aspect twenty-two, in some implementations of aspect twenty-two, the method further includes: the radio access network device determining a first identifier in a first mapping relationship based on the first SRS resource and the second SRS resource, wherein the first SRS resource and the second SRS resource belong to SRS resources in a first parameter group corresponding to the first identifier, and the first mapping relationship is used to indicate the correspondence between multiple identifiers and multiple parameter groups, each parameter group including at least one SRS resource for transmitting data and the SRS resource to which the TPC adjustment amount in the at least one SRS resource for transmitting data is applied, and the second indication information includes the first identifier.

[0112] In conjunction with aspect 22, in some implementations of aspect 22, the SRS resource to which the TPC adjustment in each parameter group acts belongs to one of at least one SRS resource sets, and the at least one SRS resource set corresponds one-to-one with at least one communication device.

[0113] In conjunction with aspect twenty-two, in some implementations of aspect twenty-two, the wireless access network device determines a third SRS resource and determines a first index corresponding to a second identifier in a second mapping relationship based on the third SRS resource, wherein the third SRS resource is an SRS resource to which the first TPC adjustment amount is accumulated, the second mapping relationship is used to indicate the mapping relationship between multiple identifiers and multiple indices, the first index is an index of the third SRS, and the second indication information includes the second identifier.

[0114] In this embodiment of the application, the second identifier can be the same as the first identifier. The third SRS resource and the first TPC adjustment amount are associated through the first index, which enables the TPC values ​​of the third SRS resources with the same first index to be accumulated.

[0115] In conjunction with aspect twenty-two, in some implementations of aspect twenty-two, the second mapping relationship contains a second index and a third index; the radio access network device determines the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the second index is 1; the radio access network device determines the packet information corresponding to the third index based on the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the third index is greater than 1; the radio access network device determines the transmission power of the PUSCH based on the packet information.

[0116] In conjunction with aspect 22, in some implementations of aspect 22, the SRS resources corresponding to the third index include SRS resources belonging to the first SRS resource set and the second SRS resource set; the radio access network device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0117] In conjunction with aspect 22, in some implementations of aspect 22, the SRS resource corresponding to the third index includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the second index belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the second index.

[0118] In this embodiment of the application, by combining the first SRS resource corresponding to the third index and the second SRS resource corresponding to the second index, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the second index value, which can simplify the configuration signaling of packet information of the radio access network device.

[0119] In a twenty-third aspect, a terminal device is provided, comprising: a receiving unit configured to receive first indication information, the first indication information being configured to indicate a first transmission power control (TPC) adjustment amount; the receiving unit receiving second indication information, the second indication information being configured to indicate at least one first sounding reference signal (SRS) resource and the second indication information being configured to indicate a second SRS resource on which the first TPC adjustment amount applies, the second SRS resource being at least one of the first SRS resources; and a transmitting unit configured to transmit first data on the first SRS resource and adjust the power corresponding to the second SRS resource according to the first TPC adjustment amount.

[0120] Currently, when a terminal device sends uplink data to multiple TRPs, determining the power of the uplink data sent to multiple TRPs requires increasing the signaling overhead of the TPC indication information exponentially according to the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, the second indication information can indicate both the first SRS resource corresponding to the uplink data transmission and the second SRS resource to which the TPC adjustment applies (here referring to the transmit power of the uplink data corresponding to the SRS resource to which the TPC adjustment applies), and the second SRS resource is at least one of the first SRS resources, thereby saving the signaling overhead of the TPC indication information. It should also be understood that when the terminal device sends the first data on the first SRS resource, in the codebook-based uplink transmission mode, the terminal device determines the corresponding SRS resource according to the index of the SRI indication information, uses the corresponding transmit antenna on that SRS resource, and transmits PUSCH data through that transmit antenna. In the non-codebook-based uplink transmission mode, the terminal device determines the transmission layer number of the PUSCH based on the number of SRS resources indicated by the SRI, and determines the corresponding SRS resource based on the index of the SRI indication information. Each SRS resource corresponds to a precoding matrix, which is used to characterize the amplitude and phase information between the transmitting antennas. The terminal device performs PUSCH transmission based on this precoding matrix. It should be understood that the power corresponding to the second SRS resource refers to the transmit power of the second data corresponding to the second SRS resource, and the second data is a part of the first data.

[0121] In conjunction with aspect twenty-three, in some implementations of aspect twenty-three, the terminal device further includes: a processing unit, which determines the first SRS resource and the second SRS resource based on the SRS resource in the first parameter group corresponding to the first identifier in the first mapping relationship, wherein the first mapping relationship is used to indicate the correspondence between multiple identifiers and multiple parameter groups, each parameter group includes at least one SRS resource for transmitting data and the SRS resource to which the TPC adjustment amount in the at least one SRS resource for transmitting data is applied, and the second indication information includes the first identifier.

[0122] In conjunction with aspect 23, in some implementations of aspect 23, the SRS resource to which the TPC adjustment in each parameter group acts belongs to one of at least one SRS resource sets, and the at least one SRS resource set corresponds one-to-one with at least one communication device.

[0123] In conjunction with aspect 23, in some implementations of aspect 23, the processing unit determines a third SRS resource based on a first index corresponding to the second identifier in the second mapping relationship, wherein the third SRS resource is the SRS resource to which the first TPC adjustment amount is accumulated, the second mapping relationship is used to indicate the mapping relationship between multiple identifiers and multiple indices, the first index is the index of the third SRS, and the second indication information includes the second identifier.

[0124] In this embodiment of the application, the second identifier can be the same as the first identifier. The third SRS resource and the first TPC adjustment amount are associated through the first index, which enables the TPC values ​​of the third SRS resources with the same first index to be accumulated.

[0125] In conjunction with aspect 23, in some implementations of aspect 23, the second mapping relationship contains a second index and a third index; the terminal device determines the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the second index is 1; the terminal device determines the packet information corresponding to the third index based on the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the third index is greater than 1; the terminal device determines the transmission power of the PUSCH based on the packet information.

[0126] In conjunction with aspect 23, in some implementations of aspect 23, the SRS resources corresponding to the third index include SRS resources belonging to the first SRS resource set and the second SRS resource set; the terminal device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0127] In conjunction with aspect 23, in some implementations of aspect 23, the SRS resource corresponding to the third index includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the second index belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the second index.

[0128] In this embodiment of the application, by combining the first SRS resource corresponding to the third index and the second SRS resource corresponding to the second index, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the second index value, which can simplify the configuration signaling of the packet information of the terminal device.

[0129] In a twentieth aspect, a wireless access network device is provided, comprising: a processing unit configured to determine first indication information, the first indication information being configured to indicate a first transmission power control (TPC) adjustment amount; the processing unit configured to determine second indication information, the second indication information being configured to indicate at least one first sounding reference signal (SRS) resource and the second indication information being configured to indicate a second SRS resource on which the first TPC adjustment amount acts, the second SRS resource being at least one of the first SRS resources; and a transmitting unit configured to transmit the first indication information and the second indication information.

[0130] Currently, when a terminal device sends uplink data to multiple TRPs, the radio access network device needs to increase the signaling overhead of the transmission power control indication information exponentially with the number of TRPs. In this embodiment, by utilizing the remaining bits in the SRI field, the second indication information can indicate both the first SRS resource corresponding to the uplink data transmission and the second SRS resource on which the TPC adjustment is applied (here referring to the transmit power of the uplink data corresponding to the SRS resource on which the TPC adjustment is applied), and the second SRS resource is at least one of the first SRS resources, thereby saving the signaling overhead of the TPC indication information.

[0131] In conjunction with aspect twenty-four, in some implementations of aspect twenty-four, the method further includes: the processing unit determining a first identifier in a first mapping relationship based on the first SRS resource and the second SRS resource, wherein the first SRS resource and the second SRS resource belong to SRS resources in a first parameter group corresponding to the first identifier, and the first mapping relationship is used to indicate the correspondence between multiple identifiers and multiple parameter groups, each parameter group including at least one SRS resource for transmitting data and the SRS resource to which the TPC adjustment amount in the at least one SRS resource for transmitting data is applied, and the second indication information includes the first identifier.

[0132] In conjunction with aspect 24, in some implementations of aspect 24, the SRS resource to which the TPC adjustment in each parameter group acts belongs to one of at least one SRS resource sets, and the at least one SRS resource set corresponds one-to-one with at least one communication device.

[0133] In conjunction with aspect twenty-four, in some implementations of aspect twenty-four, the processing unit determines a third SRS resource and determines a first index corresponding to a second identifier in a second mapping relationship based on the third SRS resource, wherein the third SRS resource is an SRS resource to which the first TPC adjustment amount is accumulated, the second mapping relationship is used to indicate the mapping relationship between multiple identifiers and multiple indices, the first index is an index of the third SRS, and the second indication information includes the second identifier.

[0134] In this embodiment of the application, the second identifier can be the same as the first identifier. The third SRS resource and the first TPC adjustment amount are associated through the first index, which enables the TPC values ​​of the third SRS resources with the same first index to be accumulated.

[0135] In conjunction with aspect twenty-four, in some implementations of aspect twenty-four, the second mapping relationship contains a second index and a third index; the radio access network device determines the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the second index is 1; the radio access network device determines the packet information corresponding to the third index based on the packet information corresponding to the second index, and the number of SRS resource sets corresponding to the third index is greater than 1; the radio access network device determines the transmission power of the PUSCH based on the packet information.

[0136] In conjunction with aspect 24, in some implementations of aspect 24, the SRS resources corresponding to the third index include SRS resources belonging to the first SRS resource set and the second SRS resource set; the radio access network device respectively determines the packet information corresponding to the SRS resources belonging to the first SRS resource set and the packet information corresponding to the SRS resources belonging to the second SRS resource set.

[0137] In conjunction with aspect 24, in some implementations of aspect 24, the SRS resource corresponding to the third index includes a first SRS resource, the first SRS resource and the second SRS resource corresponding to the second index belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the second index.

[0138] In this embodiment of the application, by combining the first SRS resource corresponding to the third index and the second SRS resource corresponding to the second index, wherein the first SRS resource and the second SRS resource belong to the same SRS resource set, the packet information corresponding to the first SRS resource is the same as the packet information corresponding to the second index value, which can simplify the configuration signaling of packet information of the radio access network device.

[0139] According to the scheme of the embodiments of this application, by utilizing the reserved bits in the SRI field and dividing the SRS resource into different SRS resource sets, different TRPs can be corresponded. This allows two different indices to indicate the same SRS resource, but to indicate different SRS resources for which power adjustment is applied. That is, the power adjustment applies to the transmission power of the transmitted data of different TRPs. Attached Figure Description

[0140] Figure 1 This is a schematic diagram illustrating an application scenario of an embodiment of this application.

[0141] Figure 2 This is a schematic diagram of a scenario for an uplink transmission mode based on a non-codebook that can be applied to the embodiments of this application.

[0142] Figure 3 This is a schematic diagram of a codebook-based uplink transmission mode applicable to embodiments of this application.

[0143] Figure 4 This is a schematic interactive diagram of one example of an instruction method of this application.

[0144] Figure 5 This is another illustrative interactive diagram illustrating one example of an instruction method in this application.

[0145] Figure 6 This is a schematic block diagram of an example of a terminal device according to an embodiment of this application.

[0146] Figure 7 This is a schematic block diagram of an example of a wireless access network device according to an embodiment of this application.

[0147] Figure 8 This is a schematic block diagram of another example of a terminal device according to an embodiment of this application.

[0148] Figure 9 This is a schematic block diagram of another example of a wireless access network device according to an embodiment of this application. Detailed Implementation

[0149] The technical solutions of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0150] The methods described in this application can be applied to Long Term Evolution (LTE) systems, Long Term Evolution-Advanced (LTE-A) systems, Enhanced Long Term Evolution-Advanced (eLTE) systems, New Radio (NR) systems of the 5th Generation (5G) mobile communication system, and can also be extended to similar wireless communication systems, such as Wireless-Fidelity (WiFi), Worldwide Interoperability for Microwave Access (WIMAX), future 6th Generation (6G) systems, and cellular systems related to the 3rd Generation Partnership Project (3GPP).

[0151] The application scenarios of the technical solutions provided in this application embodiment can include various scenarios, such as homogeneous network scenarios, heterogeneous network scenarios, single TRP scenarios, and multi-TRP scenarios (e.g., Figure 1 As shown), TRP is a wireless access network device, in frequency division duplex (FDD) scenarios and time division duplex (TDD) scenarios.

[0152] In this embodiment, a wireless access network device is a apparatus deployed in a wireless access network to provide wireless communication functions for terminal devices. Its functions may include configuring uplink and downlink resources, and / or transmitting control information such as DCI, and / or transmitting downlink signals and receiving uplink signals. Wireless access network devices may include various forms of base stations, macro base stations, micro base stations (also called small cells), relay stations, access points, etc., or various network element devices in the core network (CN). In systems employing different wireless access technologies, the names of devices with base station functions may differ. For example, a wireless access network device may be an access point (AP) in a wireless local area network (WLAN), or a base transceiver station (BTS) in a global system for mobile communication (GSM) or code division multiple access (CDMA). It may also be a Node B (5G nodeB, gNB) in a 5G system or an evolved Node B (eNB or eNodeB) in an LTE system. Alternatively, the wireless access network equipment can also be a Node B in a 3rd generation (3G) system. In addition, the wireless access network equipment can also be a relay station or access point, or a vehicle-mounted device, wearable device, or a wireless access network device in a fifth-generation (5G) network, or a wireless access network device in a future evolved public land mobile network (PLMN) network, etc.

[0153] The terminal device in this application embodiment may also be referred to as user equipment (UE), access terminal, subscriber unit, terminal station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, terminal agent, or terminal device apparatus. Its functions may include receiving downlink / sidelink signals and / or transmitting uplink / sidelink signals. The terminal device may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. It may also include user units, cellular phones, smartphones, wireless data cards, personal digital assistant (PDA) computers, tablet computers, wireless modems, handsets, laptop computers, machine-type communication (MTC) terminals, and stations (STs) in wireless local area networks (WLANs). It can be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, and next-generation communication systems, such as terminal devices in 5G networks or terminal devices in future PLMN networks.

[0154] The following explains the relevant terms and technologies used in this application.

[0155] (1) Uplink transmission mode based on non-codebook

[0156] For example, when a terminal device is configured for a non-codebook-based uplink transmission mode, the radio access network device sends a channel state information reference signal (CSI-RS) to the terminal device. After receiving the CSI-RS, the terminal device obtains downlink channel quality information through measurement and calculates uplink channel quality information based on channel heterogeneity. Then, based on the uplink channel quality information, it designs multiple precoding matrices and precodes multiple sounding reference signals (SRS) using these precoding matrices. Finally, it transmits the precoded SRS. Optionally, one precoding matrix corresponds to one SRS, and the precoding matrix is ​​used to characterize the amplitude and phase information between transmitting antennas; or one transmitting antenna corresponds to one SRS; or one transmitting beam corresponds to one SRS, and the transmitting beam has directionality; or the energy distribution of the transmitted SRS signal in space has directionality. Optionally, the multiple SRS are carried on multiple SRS resources or SRS ports. After receiving multiple precoded SRSs, the radio access network (RAN) device can acquire and measure different equivalent channels on multiple SRS resources or SRS ports. It then sends one or more SRS resources or SRS ports recommended by the RAN device to the terminal device via DCI indication, for example, via SRI indication. The terminal device determines the transmission layer number of the PUSCH based on the number of SRS resources indicated by the SRI and performs PUSCH transmission based on the precoded matrix of the SRS transmitted on each SRI-indicated SRS resource. Optionally, there is a one-to-one correspondence between the SRS resources indicated by the SRI and the DMRS ports of the PUSCH. In this application, this can be referred to as the PUSCH transmission corresponding to the SRS resources indicated by the SRI.

[0157] like Figure 2 The diagram shown is a scenario illustration of an uplink transmission mode based on a non-codebook that can be applied to embodiments of this application. Figure 2 The SRI shown can be included in the DCI. The SRI field indicates the index of some or all of the configured SRS resources. The number of SRS resources configured for the terminal device can be configured via radio resource control (RRC) signaling.

[0158] For example, after receiving the DCI, the terminal device first determines a table based on the maximum uplink transmission layer (i.e., the maximum number of supported layers for PUSCH, which can be denoted as L_max). For instance, in the 5G standard, if L_max = 3, the determined table could be "Table 7.3.1.1.2-30 SRI indication for non-codebook based PUSCH transmission (L_max = 3)", as shown in Table 1. The maximum uplink transmission layer L_max can be configured through Radio Resource Control (RRC) signaling. Then, the terminal device determines a cell in the table based on the number of configured SRS resources (N_SRS) and the index carried in the SRI field. The number in this cell represents the index of the SRS resource recommended by the radio access network device, and the number of SRS resource indexes included in the cell represents the number of PUSCH transmission layers. For example, referring to Table 1, when the terminal device is configured with 4 SRS resources, i.e., N_SRS=4, and the index carried by the SRI field is 8, the determined cell contains 1 and 3. Therefore, it can be seen that the recommended SRS resource numbers of the wireless access network device are 1 and 3. SRS resource 1 and SRS resource 3 correspond to the transmission of PUSCH, and the number of PUSCH transmission layers is 2.

[0159] Table 1

[0160] 0 0 0 0 0 0 1 1 1 1 1 1 2 0，1 2 2 2 2 3 Reserved 3 0,1 3 3 4 0,2 4 0,1 5 1,2 5 0,2 6 0,1,2 6 0,3 7 Reserved 7 1,2 8 1,3 9 2,3 10 0,1,2 11 0,1,3 12 0,2,3 13 1,2,3 14-15 Reserved

[0161] In Table 1, the index refers to the index of the bit field mapped to the index, which specifically refers to the SRI field.

[0162] It should be noted that the above descriptions of the non-codebook-based uplink transmission mode are all examples and do not constitute a limitation on the non-codebook-based uplink transmission mode described in this application.

[0163] (2) Codebook-based uplink transmission mode

[0164] For example, when a terminal device is configured for codebook-based uplink transmission mode, it transmits SRS to the radio access network (RAN) device on SRS resources. The RAN device measures the channel conditions based on the received SRS and selects an appropriate PUSCH precoding matrix and PUSCH transport layer number. It then sends the selected PUSCH precoding matrix and PUSCH transport layer number to the terminal device via DCI. Specifically, the PUSCH precoding matrix is ​​the precoding matrix used to transmit data via PUSCH. This precoding matrix indicates the amplitude and phase information of the transmitting antenna. There is a one-to-one correspondence between the transmitting antenna and each port of the SRS resource. The rows of the precoding matrix correspond to the transmitting antenna or the SRS port in the SRS resource, and the columns correspond to the PUSCH transport layer. Subsequently, the terminal can use the PUSCH precoding matrix and PUSCH transport layer number recommended by the RAN device for PUSCH transmission.

[0165] like Figure 3 The diagram shown illustrates a scenario of a codebook-based uplink transmission mode applicable to embodiments of this application. Figure 3 As shown, the precoding information and number of layers field (precoding indicator) can be included in the DCI. Optionally, the DCI may also include the SRI field. Wherein:

[0166] The SRI field is used to indicate the index of an SRS resource, which is used to select one SRS resource from a plurality of configured SRS resources. As an example, in a codebook-based uplink transmission mode, a terminal device can be configured with two SRS resources. If the terminal device is configured with one SRS resource, the DCI may not include the SRI field. If the terminal device is configured with two SRS resources, it can use different transmit antennas or different directional transmit beams to transmit SRS on different SRS resources. Through the SRI indication, the radio access network device notifies the terminal device of the transmit antenna or transmit beam used for transmitting PUSCH, etc. It can be understood that each row in the precoding matrix corresponds to each SRS port in the SRS resource indicated by the radio access network device. The number of SRS resources configured for the terminal device can be configured via RRC signaling. As an example, a maximum of four SRS ports can be configured in each SRS resource, and the number of SRS ports configured in each SRS resource can be configured via RRC signaling.

[0167] The precoding information and layer number indicator fields are used to carry an index that indicates the transmission rank indicator (TRI) and TPMI. The TRI is used to configure the PUSCH transmission layer number. The TPMI is used to configure the PUSCH precoding matrix.

[0168] For a description of the antenna port domain, please refer to the following text.

[0169] For example, after receiving the DCI, the terminal device first determines a table based on the maximum uplink transmission layer number (e.g., marked as maxRank, maxRank = L_max) and the number of SRS ports configured for the SRS resource indicated by the SRI field. For instance, in the 5G standard, assuming maxRank = 2 and the number of SRS ports configured for the SRS resource indicated by the SRI field is 2, the determined table could be "Table 7.3.1.1.2-4 Precoding information and number of layers, for 2 antenna ports, if transform Precoder = disabled and maxRank = 2"), a portion of which is shown in Table 2. Then, the terminal device can determine a cell in this table based on the precoding information and the index carried in the layer number field. The layer number contained in this cell represents the value of TRI, i.e., the value of the PUSCH transmission layer. For example, assuming the index carried by the precoding information and layer number field is 4, the cell determined by the terminal contains "1layer:TPMI=3", meaning the radio access network device recommends TRI=1, i.e., PUSCH transport layer number = 1, and the TPMI index value is 3. As another example, assuming the index carried by the precoding information and layer number field is 2, the cell determined by the terminal contains "2layer:TPMI=0", meaning the radio access network device recommends TRI=1, i.e., PUSCH transport layer number = 2, and the TPMI index value is 0.

[0170] Table 2

[0171]

[0172] In Table 2, the index refers to the index of the bit field mapping, which specifically refers to the precoding information and the layer number indicator field.

[0173] Next, the terminal device can determine a codebook based on the number of SRS ports configured for the SRS resource indicated by the SRI field and the TRI. The TPMI is used to indicate a precoding matrix in this codebook. The codebook is pre-stored in the radio access network device and the terminal device. The number of rows in each precoding matrix in the codebook is the number of SRS ports configured for the SRS resource indicated by the SRI field, and the number of columns is the number of transmission layers indicated by the TRI. For example, in the 5G standard, based on the above example, if the number of SRS ports is 2 and the TRI is "1 layer", then the determined codebook is "Table 6.3.1.5-1 Precoding matrix W for single-layer transmission using two antenna ports", as shown in Table 3.

[0174] Table 3

[0175]

[0176] For example, assuming the precoding information and layer number field indication information determined by the terminal device are "1layer:TPMI=3", then, referring to Table 3, the recommended precoding matrix for the wireless access network device can be derived as follows:

[0177] It should be noted that the above descriptions of the codebook-based uplink transmission mode are all examples and do not constitute a limitation on the codebook-based uplink transmission mode described in this application.

[0178] (3) The wireless access network equipment adjusts the transmit power of the terminal equipment through the TPC command (transmission power control command, TPCCommand).

[0179] When allocating resources for terminal devices, radio access network (RAN) equipment needs to avoid excessive use of the terminal devices' transmit power in order to extend battery life and reduce intra-cell and inter-cell interference. RAN equipment adjusts the transmit power of terminal devices by sending TPC commands. Based on these TPC commands, terminal devices can adjust uplink transmit power in two ways: accumulation and absolute. In accumulation mode, the terminal device accumulates the TPC values ​​received from the RAN equipment each time, and the accumulated result is used to adjust the uplink transmit power. It should be understood that using accumulation mode allows the uplink transmit power value to dynamically adapt to the current channel state. When determining the current uplink transmit power, the terminal device needs to accumulate the TPC value indicated when scheduling the current uplink transmission, as well as other TPC values ​​received in the previous period. In absolute mode, the terminal device directly uses the TPC value received from the radio access network device each time to adjust the uplink transmit power without accumulating the TPC values ​​previously indicated by scheduling. This power control mechanism that dynamically adjusts the current transmission power value through TPC can be called a closed-loop power control mechanism. The terminal device needs to determine the current uplink transmission power based on the transmit power values ​​determined by the open-loop power control mechanism and the closed-loop power control mechanism. Specifically, the radio access network device sends a TPC index to the terminal device. The terminal device uses this index and, according to its configured uplink transmit power adjustment method, looks up the corresponding power adjustment value in a table, and then adjusts the transmit power of the corresponding uplink data according to this power adjustment value.

[0180] For example, the terminal device adjusts its transmit power using a cumulative method. The terminal device's transmit power value, determined by an open-loop power control mechanism, is 5dBm. The radio access network (RAN) device adjusts the terminal device's power according to Table 4 in the 5G standard. The RAN device first sends a TPC field index of 0 to the terminal device. Upon receiving this index, the terminal device looks up the corresponding cumulative adjustment value in Table 4 (-1dB), adding (-1dB) to the 5dBm value. Therefore, the terminal device's PUSCH power to the RAN device at this point is 4dBm. The RAN device then sends a second TPC field index of 2 to the terminal device. Upon receiving this index, the terminal device looks up the corresponding cumulative adjustment value in Table 4 (1dB), adding (1dB) to the 4dBm value. Thus, the terminal device's PUSCH power to the RAN device at this point is 5dBm, and so on.

[0181] Table 4

[0182] 0 -1 -4

[0183] 2 1 1 3 3 4

[0184] It should be noted that the above descriptions of wireless access network devices adjusting the uplink transmission power of terminal devices via TPC are all examples and do not constitute a limitation on the method of power adjustment in this application.

[0185] The technical solutions provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0186] Figure 4 This is a schematic flowchart of one instruction method 100 of this application.

[0187] The following example uses a maximum of 2 SRS resource sets configured. This application does not exclude the possibility of configuring more than 2 SRS resource sets.

[0188] In S110, the radio access network device #A determines the SRI indication information #A1. This SRI indication information #A1 is used to indicate the selection of SRS resources belonging to the set of m SRS resources from the configured n SRS resources, where n>1, m∈{1,2}, and all SRS resources in the set of m SRS resources are the n SRS resources;

[0189] Optionally, one SRS resource set corresponds to one set of SRS open-loop power control parameters, and different SRS resource sets can correspond to different SRS open-loop power control parameters. Therefore, each TRP can obtain the uplink channel based on different SRS resource sets.

[0190] The SRI indication information #A1 includes an index, which comes from a first set of index values. This first set of index values ​​contains multiple index values, at least two of which are referred to as the first index value and the second index value. The SRS resource corresponding to each index value belongs to two SRS resource sets, namely the first SRS resource set and the second SRS resource set. The SRS resources corresponding to the first index value and the SRS resources corresponding to the second index value are the same but in different orders. For example, the SRS resources corresponding to the first index value may have the SRS resources in the first SRS resource set first (i.e., the first SRS resource belongs to the first SRS resource set) and the SRS resources in the second SRS resource set second; or the SRS resources corresponding to the second index value may have the SRS resources in the second SRS resource set first (i.e., the first SRS resource belongs to the second SRS resource set) and the SRS resources in the first SRS resource set second.

[0191] In one possible implementation, the first index value set includes the first index value, the second index value, and the third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resource corresponding to the third index value belongs to 1 SRS resource set.

[0192] Optionally, the index value of the SRI indication information can also be called a status value or a bit field value. Each index value corresponds to different indication information; for example, different index values ​​may correspond to different SRS resources or sets of SRS resources. This correspondence may be pre-stored in the radio access network equipment and terminal equipment.

[0193] Specifically, the number of indexes in the first set of index values ​​corresponding to SRI indication information #A1 (in this application, the first set of index values ​​corresponding to SRI indication information #A1 can be understood as the index values ​​included in SRS indication information #A1, which belong to the first set of index values) depends on the number of configured SRS resources and / or SRS resource sets.

[0194] For codebook-based PUSCH transmission, when the number of SRS resource sets is 1, the number of index values ​​in the first index value set corresponding to SRI indication information #A1 is n, where n is the number of configured SRS resources. Each index value in the first index value set corresponds to a configured SRS resource, and different index values ​​correspond to different SRS resources. When the number of SRS resource sets is 2, the number of index values ​​in the first index value set corresponding to the number of SRS resources is n. The first index value set also includes at least two index values, such as the first index value and the second index value mentioned above. Optionally, it also includes the third index value mentioned above.

[0195] Optionally, when the SRI indication information #A1 indicates multiple SRS resources (or sets of SRS resources), the different SRS resources (or sets of SRS resources) correspond to different time-frequency resources occupied by the PUSCH. For example, if the PUSCH occupies two orthogonal frequency division multiplexing (OFDM) symbol groups, and each OFDM symbol group corresponds to an SRS resource indicated by the SRI indication information, then the transmit antenna or transmit beam on each OFDM symbol group can be determined based on the transmit antenna or transmit beam used to transmit SRS on the corresponding SRS resource. For example, if a PUSCH occupies slots 0 and 1, and the SRI indication information specifies two SRS resources (SRS resource 0 and SRS resource 1), then slot 0 corresponds to SRS resource 0, and slot 1 corresponds to SRS resource 1. When the terminal device transmits a PUSCH in slot 0, it uses the same transmitting antenna and beam pattern as SRS resource 0. Similarly, when the terminal device transmits a PUSCH in slot 1, it uses the same transmitting antenna and beam pattern as SRS resource 1. Figure 2 As shown.

[0196] Optionally, when the first index value indicates multiple SRS resources, the multiple SRS resources belong to different SRS resource sets, or it can be understood that the SRS resource indicated by the first index value belongs to multiple SRS resource sets.

[0197] In one possible implementation, the wireless access network device #A determines TPC indication information #A2, which is used to adjust the transmission power of the PUSCH transmission corresponding to the first SRS resource set in the m SRS resource sets, 1≤m≤n.

[0198] Based on the embodiments of this application, TPC indication information #A2 is only used to adjust the PUSCH transmission corresponding to one of the two SRS resources indicated by the index in SRI indication information #A1 (it should be understood that the SRS resource indicated by the index in SRI indication information #A1 in this application can also be expressed as the SRS resource indicated by SRI indication information #A1) (hereinafter referred to as TPC indication information #A2 acting on one SRS resource), or TPC indication information #A2 is only used to adjust the PUSCH transmission corresponding to one of the two SRS resource sets indicated by the index in SRI indication information #A1, and the two SRS resources may belong to different SRS resource sets.

[0199] Optionally, SRI indication information #A1 is used to indicate the SRS resource to which TPC indication information #A2 applies. For example, the first set of index values ​​includes two index values ​​(e.g., index value #1 and index value #2), which correspond to two SRS resources (e.g., SRS resource 1 and SRS resource 2). The SRS resource corresponding to index value #1 and the SRS resource corresponding to index value #2 are the same. Index value #1 indicates that TPC indication information #A2 applies to SRS resource 1, and index value #2 indicates that TPC indication information #A2 applies to SRS resource 2.

[0200] Optionally, TPC indication information #A2 applies to the first SRS resource indicated by the index of SRI indication information #A1, or to the SRS resources in the first SRS resource set. For example, the first index value set includes two index values ​​(e.g., index value #1 and index value #2), which correspond to two SRS resources (e.g., SRS resource 1 and SRS resource 2). The SRS resources corresponding to index value #1 and index value #2 are the same. The order of the SRS resources corresponding to index value #1 is SRS resource 1, SRS resource 2, and the order of the SRS resources corresponding to index value #2 is SRS resource 2, SRS resource 1. Therefore, for index value #1, TPC indication information #A2 applies to SRS resource 1, and for index value #2, TPC indication information applies to SRS resource 2.

[0201] For non-codebook-based PUSCH transmission, when the configured SRS resource set number is 1, the SRI indication information #A1 includes an index value. This index value belongs to the first index value set. The number of index values ​​in the first index value set is related to the number of SRS resources n and the maximum transmission layer of the currently configured PUSCH. When the maximum transmission layer is greater than 1, the index value of the SRI indication information #A1 can correspond to multiple SRS resources. The number of SRS resources corresponding to the index value in the SRI indication information #A1 is the transmission layer of the PUSCH. When the configured SRS resource set number is 2, the index values ​​in the first index value set corresponding to the SRI indication information #A1 include not only the index value corresponding to one SRS resource set, but also at least two index values, such as the aforementioned first index value and the aforementioned second index value. Optionally, it also includes the aforementioned third index value.

[0202] Optionally, when SRI indication information #A1 indicates multiple SRS resources (it should be understood that in this application, SRI indication information #A1 indicates SRS resources, i.e., the SRS resources corresponding to the index in SRI indication information #A1), and the multiple SRS resources belong to different SRS resource sets, the different time-frequency resources occupied by the PUSCH correspond to the different SRS resource sets. For example, if the PUSCH occupies two OFDM symbol groups, and each OFDM symbol group corresponds to an SRS resource set indicated by the SRI indication information, then the transmit antenna or transmit beam on each OFDM symbol group can be determined based on the transmit antenna or transmit beam used to transmit SRS on the corresponding SRS resource in the SRS resource set. For example, if PUSCH occupies slots 0 and 1, and the SRI indication information indicates two SRS resource sets (SRS resource set 0 and SRS resource set 1), and the SRI indication information indicates SRS resource 0 and SRS resource 1 in SRS resource set 0, and SRS resource 2 and SRS resource 3 in SRS resource set 1, then slot 0 corresponds to SRS resource 0 and SRS resource 1 in SRS resource set 0, and slot 1 corresponds to SRS resource 2 and SRS resource 3 in SRS resource set 1. When the terminal device transmits PUSCH on slot 0, it uses the same transmitting antenna and transmitting beam as SRS resources 0 and SRS resource 1 in SRS resource set 0. When the terminal device transmits PUSCH on slot 1, it uses the same transmitting antenna and transmitting beam as SRS resources 2 and SRS resource 3 in SRS resource set 1. At this point, the number of transport layers for PUSCH is 2 in both slot 0 and slot 1 (depending on the number of SRS resources in one SRS resource set corresponding to the index in the SRI indication information).

[0203] Based on the embodiments of this application, TPC indication information #A2 is only used to adjust the PUSCH transmission corresponding to all SRS resources in one of the two SRS resource sets indicated by SRI indication information #A1 (hereinafter referred to as TPC indication information #A2 acting on one SRS resource set).

[0204] Optionally, TPC indication information #A2 is used only to adjust the PUSCH transmission of all or part of the SRS resources in one of the two SRS resource sets (e.g., the first SRS resource set and the second SRS resource set) indicated by SRI indication information #A1 (e.g., the target SRS resource set).

[0205] In one possible implementation, the target SRS resource set may be the first SRS resource set in the order of the first SRS resource set and the second SRS resource set.

[0206] Optionally, SRI indication information #A1 is used to indicate the SRS resource or SRS resource set that TPC indication information #A1 applies to. For example, the first index value set includes two index values ​​(e.g., index value #1 and index value #2), each corresponding to two SRS resource sets (including SRS resource set 0 and SRS resource set 1). SRS resource set 0 includes SRS resources 0 and 1, and SRS resource set 1 includes SRS resources 2 and 3. The SRS resource corresponding to index value #0 is the same as the SRS resource corresponding to index value #1. Index value #1 indicates that TPC indication information #A2 applies to SRS resources 0 and / or 1 in SRS resource set 0, and index value 2 indicates that TPC indication information #A2 applies to SRS resources 2 and / or 3 in SRS resource set 1.

[0207] Optionally, TPC indication information #A applies to some or all of the SRS resources in the first SRS resource set corresponding to the index in SRI indication information #A1. For example, the first index value set includes two index values ​​(e.g., index value #1 and index value #2), each index value corresponding to two SRS resource sets (including SRS resource set 0 and SRS resource set 1). The SRS resources corresponding to index value #1 and index value #2 are the same. The SRS resource sets indicated by index value #1 are, in order, SRS resource set 0 and SRS resource set 1, and the SRS resource sets indicated by index value #2 are, in order, SRS resource set 1 and SRS resource set 0. Therefore, for index value 1, TPC indication information #A2 applies to SRS resource set 0, and for index value 2, TPC indication information #A2 applies to SRS resource set 1.

[0208] The order of SRS resources or the order of SRS resource sets in this application embodiment can be understood as follows: when configuring the mapping relationship (mapping relationship table) between the SRI indication information index value of the wireless access network device or terminal device and the SRS resource number, the SRS resources or SRS resource sets will naturally be sorted, or the SRS resource numbers will be arranged according to a certain rule (the order of the SRS resource sets).

[0209] Optionally, the grouping information of the fourth index value in the first index value set is determined, with each fourth index value corresponding to only one SRS resource set. Based on the grouping information of the fourth index value, the grouping information of the fifth index value in the first index value set is determined, with each fifth index value corresponding to two SRS resource sets. Different SRS resource sets (SRS resource set 0 and SRS resource set 1) correspond to different grouping information within the SRS resource set corresponding to the fifth index value. The transmit power adjustment values ​​for PUSCH transmissions corresponding to SRS resources with the same grouping information can be accumulated.

[0210] Optionally, in the SRS resource set corresponding to the fifth index value, the grouping information corresponding to SRS resource set 0 is determined based on the grouping information corresponding to one of the index values ​​(index value 0) in the fourth index value, and the grouping information corresponding to SRS resource set 1 is determined based on the grouping information corresponding to another index value (index value 1) in the fourth index value. Specifically, the SRS resource corresponding to index value 0 is the same as the SRS resource included in SRS resource set 0 corresponding to the fifth index value, and the SRS resource corresponding to index value 1 is the same as the SRS resource included in SRS resource set 1 corresponding to the fifth index value.

[0211] Optionally, each SRS resource belongs to only one SRS resource set, and the SRS transmitted on each SRS resource set can be power controlled independently.

[0212] In this application, the index value of the SRI indication information can also be called the status value of the SRI indication information, or the indication value of the SRI indication information.

[0213] This application does not exclude the possibility that the number of SRS resource sets configured is greater than 2.

[0214] The specific method is as follows:

[0215] Method 1: Codebook-based PUSCH transmission

[0216] When the terminal device #A is configured with two SRS resources, and these two SRS resources can belong to different SRS resource sets, the SRI indication lookup table based on the codebook is shown in Table 5 (assuming that the two SRS resources are SRS resource 0 and SRS resource 1).

[0217] The number of SRS resources configured in Table 5 = 2

[0218] 0 0 1 1 2 0,1 3 1,0

[0219] Table 5 can be understood in conjunction with Table 1. In Table 5, the index value of the SRI indication information can be the index of the bit field mapping of indication information #A, and this bit field can be the SRI field. For example, when the SRI field index value is 0, the corresponding SRS resource is SRS#0; when the SRI field index value is 2, the corresponding SRS resources are SRS#0 and SRS#1. Radio access network device #A selects the transmit beam / transmit antenna group according to the SRS resource indication terminal device #A.

[0220] It should be understood that in this application, SRS resources in different SRS resource sets can be numbered independently, that is, in SRS resource sets 0 and 1, the SRS resource numbers both start from 0. In this case, SRS resources with the same number can be distinguished by the SRS resource set. Alternatively, SRS resources in different SRS resource sets can be jointly numbered, that is, first number the SRS resource numbers in SRS resource set 0 (starting from 0), and then number the SRS resource numbers in SRS resource set 1. In this case, each SRS resource has a different number.

[0221] Wireless access network device #A can group SRS resources. For example, when there are two TRPs, the SRS resources are grouped according to the number of TRPs. SRS#0 is configured as the first SRS resource set, and SRS#0 corresponds to the channel from terminal device #A to TRP#0; SRS#1 is configured as the second SRS resource set, and SRS#1 corresponds to the channel from terminal device #A to TRP#1. Different SRS resource sets can independently determine the SRS transmit power. When the index is 0 or 1, it indicates that one TRP is receiving data transmitted by terminal device #A; when the index is 2 or 3, it indicates that two TRPs are receiving data transmitted by terminal device #A. Furthermore, based on Table 5, the SRS resources affected by the TPC adjustment amount (also called the TPC indication value) corresponding to each index in the table (which can be understood as the TPC adjustment amount affecting the transmit power of the PUSCH data corresponding to the SRS resource) can be defined in the following ways:

[0222] Method c

[0223] The SRS resource corresponding to the TPC adjustment amount corresponding to the index value of the SRI indication information is the specified SRS resource, as shown in Table 5.1.

[0224] Table 5.1 Number of SRS resources configured = 2

[0225]

[0226] The index values ​​of the SRI indication information in Table 5.1 are the indices of the bit field mapping of indication information #A, which can be the SRI field. The SRS resource corresponding to the TPC adjustment amount refers to the transmit power of the uplink data adjusted by the TPC adjustment amount, which is transmitted according to the SRS resource. The SRS resource corresponding to the TPC adjustment amounts of indices 2 and 3 is the specified SRS#1, or both can be SRS#0, or index 2 can correspond to SRS#0 and index 3 to SRS#1. This application does not restrict the SRS resource corresponding to the TPC adjustment amount of the index.

[0227] Method d

[0228] The SRS resource corresponding to the TPC adjustment amount corresponding to the index value of the SRI indication information is defined as the first or second SRS resource in the SRS resource combination, and so on; based on Table 5, it can also be defined as some or all of the SRS resources in the first SRS resource set or some or all of the SRS resources in the second SRS resource set, as shown in Table 5.2.

[0229] Table 5.2 Number of SRS resources configured = 2

[0230]

[0231] Taking method d as an example, after the radio access network device #A groups the SRS resources, it determines the index of the SRI field based on the SRS resources or the set of SRS resources corresponding to the TPC adjustment, and generates indication information #A based on this index and / or the TPC adjustment. For example, if the radio access network device #A determines that the SRS resource is SRS#0 and the SRS resource corresponding to the TPC adjustment is SRS#0, since SRS#0 corresponds to TRP#0, it can be understood that the TPC adjustment is effective for TRP#0. Therefore, based on the SRS resource corresponding to the TPC adjustment, the index value of the SRI field can be determined to be 0. For example, if wireless access network device #A determines that the SRS resources are SRS#0 and SRS#1, and the SRS resource corresponding to the TPC adjustment is SRS#0, then the order of the SRS resources can be determined as SRS#0 first (i.e., the first SRS resource is SRS#0) and SRS#1 second (i.e., the second SRS resource is SRS#1). Based on the SRS resource corresponding to the TPC adjustment, the index value of the corresponding SRI field can be determined to be 2.

[0232] Optionally, the wireless access network device #A can configure packet information associated with SRS resources, such as t-values ​​(it should be noted that in this application, t-values ​​can refer to packet information), so that the TPC values ​​corresponding to SRS resources associated with the same t-value can be accumulated, with methods A and B.

[0233] Method A

[0234] Each SRS resource is configured to be associated with a t-value, as shown in Table 6. The t-values ​​and TPC adjustment values ​​are merely examples and do not constitute a limitation of this application. In Table 6, each SRS resource corresponding to an index is associated with a t-value. In this approach, the t-value for the TPC action corresponding to each index can be specified; that is, the t-value is associated with the index value of the SRI indication information.

[0235] The number of SRS resources configured in Table 6 = 2

[0236]

[0237] Assuming the TPC adjustment is applied to the SRS resources in the manner described above (d), then according to Table 6, the calculation of the cumulative TPC value is shown in Table 6.1. In Table 6.1, the PUSCH transmitted at different PUSCH transmission times is scheduled by different DCI signaling. Each DCI signaling includes a TPC indication, and the t-value of the TPC is used to indicate the accumulation of the TPC corresponding to the SRS resource associated with that t-value. Assume that the initial accumulated TPC values ​​for SRS#0 and SRS#1 are both 0dB.

[0238] Table 6.1

[0239] TPC Adjustment 1dB 3dB -1dB 3dB PUSCH transmission timing 0 1 2 3 Cumulative TPC corresponding to SRS#0 1dB 1dB 0dB 3dB SRS#1 corresponding cumulative TPC 0dB 3dB 3dB 3dB

[0240] In Table 6.1, each SRS resource is associated with a different t value. When accumulating TPC, the accumulation is performed according to the t value of the TPC. When the PUSCH transmission time is 3, the accumulated TPC corresponding to SRS#0 is 0dB, and the accumulated TPC corresponding to SRS#1 is 2dB.

[0241] Method B

[0242] SRS resources with the same resource set are associated with the same t value. The TPC values ​​corresponding to SRS resources with the same t value can be accumulated, as shown in Table 7. The values ​​of t and TPC adjustment are merely examples and do not constitute a limitation of this application. In this approach, the t value for the TPC action of each index can be the t value corresponding to the preceding SRS resource set (i.e., the first SRS resource set).

[0243] It should be understood that in this embodiment, the index values ​​of the SRI indication information can also be configured to be associated with t values. For example, as shown in Table 6 or 7, the index values ​​0 and 1 of the SRI indication information are each associated with different t values. Therefore, index values ​​0 and 1 are the first index values, and index values ​​2 and 3 are the second index values. The grouping information associated with index values ​​2 and 3 is determined based on index values ​​0 and 1. Specifically, in index values ​​2 and 3, the index value corresponding to SRS resource 0 is determined based on the grouping information associated with index value 0, i.e., t = 0, and the index value corresponding to SRS resource 1 is determined based on the grouping information associated with index value 1, i.e., t = 1. In this case, index values ​​2 and 3 do not need to be explicitly configured with t values.

[0244] Optionally, the second index value can also display an associated t value, in which case the t value is associated only with the first SRS resource set among the multiple SRS resource sets indicated by the second index value.

[0245] Table 7

[0246]

[0247] In Table 7, SRS#0 belongs to the first SRS resource set, and its associated t-value is 0, so the SRI domain index value is 0. The t-value associated with SRS#0 in sets 2 and 3 is also 0. SRS#1 belongs to the second SRS resource set, and its associated t-value is 1, so the SRI domain index value is 1. The t-value associated with SRS#1 in sets 2 and 3 is also 1. Using Table 8 as an example, we will explain the calculation of cumulative TPC based on the t-value in conjunction with Table 7. Assume that the initial cumulative TPC values ​​for SRS#0 and SRS#1 are both 0 dB.

[0248] Table 8

[0249] TPC Adjustment 1dB 3dB 1dB 3dB PUSCH transmission timing 0 1 2 3 Cumulative TPC corresponding to SRS#0 1dB 1dB 2dB 2dB SRS#1 corresponding cumulative TPC 0dB 3dB 3dB 6dB

[0250] As shown in Table 8, when the PUSCH transmission time is 3, the cumulative TPC value associated with SRS#0 with a t value of 0 is 2dB, and the cumulative TPC value associated with SRS#1 with a t value of 1 is 6dB.

[0251] When the total number of configured SRS resources is 4, the SRI indication lookup table based on the codebook is shown in Table 9.

[0252] Table 9 shows the number of SRS resources configured as 4.

[0253] 0 0 1 1 2 2 3 3 4 0,2

[0254] 6 1,2 7 1,3 8 2,0 9 3,0 10 2,1 11 3,1 12 2,3 13 0,1 14 1,0 15 3,2

[0255] Table 9 can be understood in conjunction with Table 1. In Table 9, the index value of the SRI indication information is the index of the bit field mapping of indication information #A, and this bit field can be the SRI field. For example, when the SRI field index value is 0, the corresponding SRS resource is SRS#0; when the SRI field index value is 4, the corresponding SRS resources are SRS#0 and SRS#2. Radio access network device #A selects the transmit beam / transmit antenna group according to the SRS resource indication terminal device #A.

[0256] Table 9.1 SRI indication information in codebook-based PUSCH transmission

[0257] 0 0 1 1 2 2 3 3 4 0,2 5 1,3 6 2,0 7 3,1

[0258] In Table 9.1, SRS resource set 0 includes SRS resource 0 and SRS resource 1, and SRS resource set 1 includes SRS resource 2 and SRS resource 3. SRS resource 0 and SRS resource 2 include the same number of SRS ports (e.g., both include 4 SRS ports), and SRS resource 1 and SRS resource 3 include the same number of SRS ports (e.g., both include 2 SRS ports).

[0259] Radio access network device #A can group SRS resources. For example, when there are two TRPs, the SRS resources are grouped according to the number of TRPs. SRS#0 and SRS#1 are configured as the first SRS resource set, corresponding to the channel from terminal device #A to TRP#0; SRS#2 and SRS#3 are configured as the second SRS resource set, corresponding to the channel from terminal device #A to TRP#1. Different SRS resource sets can independently determine the SRS transmission power. When the index is 0-3, it indicates that one TRP is receiving data transmitted by terminal device #A; when the index is 4-15, it indicates that two TRPs are receiving data transmitted by terminal device #A. In Table 9, the order of SRS resources belonging to the same SRS resource set is not limited. Furthermore, the SRS resources corresponding to the TPC adjustment amount (also called TPC indication value) of each index in the table can be agreed upon. The agreement method can refer to the above methods c and d, and will not be repeated here.

[0260] Taking method d as an example, after the radio access network device #A groups the SRS resources, it determines the index of the SRI field based on the SRS resources or the set of SRS resources corresponding to the TPC adjustment, and generates indication information #A based on this index and / or the TPC adjustment. For example, if the radio access network device #A determines that the SRS resource is SRS#0 and the SRS resource corresponding to the TPC adjustment is SRS#0, since SRS#0 corresponds to TRP#0, it can be understood that the TPC adjustment is effective for TRP#0. Therefore, based on the SRS resource corresponding to the TPC adjustment, the index value of the SRI field can be determined to be 0. For example, wireless access network device #A determines that the SRS resources are SRS#0 and SRS#2, and the SRS resource set corresponding to the TPC adjustment is the first SRS resource set (the second SRS resource set). Since SRS#0 belongs to the first SRS resource set (SRS#2 belongs to the second SRS resource set), the order of the SRS resources can be determined as SRS#0 first (i.e., the first SRS resource is SRS#0) and SRS#2 last (SRS#2 first, SRS#0 last). Based on the SRS resources corresponding to the TPC adjustment, the index value of the corresponding SRI field can be determined as 4 (8).

[0261] Optionally, the wireless access network device #A can configure the t value associated with the SRS resource so that the TPC values ​​corresponding to the SRS resources with the same t value can be accumulated, for example, in mode C, mode D and mode E.

[0262] Method C

[0263] Each SRS resource is configured to be associated with a t-value, as shown in Table 10. The t-values ​​are merely examples and do not constitute a limitation of this application. In this approach, the t-value for the TPC action corresponding to each index can be a specified value; that is, the t-value is associated with the index value of the SRI indication information.

[0264] Table 10

[0265]

[0266]

[0267] According to Table 10, the cumulative TPC is calculated for each SRS resource. Taking Table 11 as an example, the calculation of cumulative TPC based on the t-value is explained in conjunction with Table 10. Assume that the initial cumulative TPC value for SRS#0 and SRS#1 is 0dB, and the accumulation method is, for example, method a.

[0268] Method a

[0269] Table 11

[0270] TPC Adjustment -1dB 1dB 2dB 1dB PUSCH transmission timing 0 1 2 3 Cumulative TPC corresponding to SRS#0 -1dB -1dB -1dB -1dB SRS#1 corresponding cumulative TPC 0dB 0dB 0dB 0dB SRS#2 corresponding cumulative TPC 0dB 1dB 1dB 1dB SRS#3 corresponding cumulative TPC 0dB 0dB 3dB 4dB

[0271] As shown in Table 11, when the PUSCH transmission timing is 3, the cumulative TPC value associated with SRS#0 with a t value of 0 is -1dB, the cumulative TPC value associated with SRS#1 with a t value of 1 is 0dB, the cumulative TPC value associated with SRS#2 with a t value of 2 is 1dB, and the cumulative TPC adjustment associated with SRS#3 with a t value of 3 is 4dB.

[0272] Method D

[0273] SRS resources with the same resource set are associated with the same t value, as shown in Table 12. The values ​​of t and TPC adjustment are merely examples and do not constitute a limitation of this application. In this approach, the t value for the TPC action corresponding to each index can be the t value corresponding to the preceding SRS resource set (i.e., the first SRS resource set) or the t value corresponding to the subsequent SRS resource sets. For example, Table 12 shows that the t value for the TPC action corresponding to each index is the t value corresponding to the preceding SRS resource set (i.e., the first SRS resource set).

[0274] It should be understood that in this embodiment, the index values ​​of the SRI indication information can also be configured to be associated with t values. For example, as shown in Tables 10 and 12, the index values ​​0 to 3 of the SRI indication information are each associated with different t values, 0 and 1. Therefore, the index values ​​0 to 3 of the SRI indication information are the first index values, and the index values ​​4 to 15 of the SRI indication information are the second index values. The grouping information associated with index values ​​4 to 15 is determined based on index values ​​0 to 3. Specifically, among index values ​​4 to 15, the index value corresponding to SRS resource 0 is determined based on the grouping information associated with index value 0, that is, t = 0; the index value corresponding to SRS resource 1 is determined based on the grouping information associated with index value 1, that is, t = 0, and so on. In this case, the t values ​​for index values ​​4 to 15 do not need to be explicitly configured.

[0275] Optionally, the second index value can also display an associated t value. In this case, the t value is only associated with the first SRS resource set among the multiple SRS resource sets indicated by the second index value. That is, index values ​​4 to 15 can display the configured t value, which corresponds to the first SRS resource set, for example, it can correspond to the SRS resource set that is sorted first.

[0276] Table 12

[0277]

[0278]

[0279] In Table 12, SRS#0 and SRS#1 belong to the first SRS resource set, and the t-value associated with SRS#0 and SRS#1 in the SRI field index values ​​of 0-15 is 0; SRS#2 and SRS#3 belong to the second SRS resource set, and the t-value associated with SRS#2 and SRS#3 in the SRI field index values ​​of 0-15 is 1.

[0280] According to Table 12, SRS resources belonging to the same set accumulate TPC values ​​simultaneously. Taking Table 13 as an example, we will explain how to calculate accumulated TPC based on the t-value, in conjunction with Table 12. Assume that the initial accumulated TPC values ​​for SRS#0 and SRS#1 are both 0 dB, and the accumulation method is, for example, method b.

[0281] Method b

[0282] Table 13

[0283] TPC Adjustment -1dB 1dB -1dB 1dB PUSCH transmission timing 0 1 2 3 Cumulative TPC corresponding to SRS#0 -1dB -1dB -2dB -2dB The cumulative TPC corresponding to SRS#1 -1dB -1dB -2dB -2dB Cumulative TPC corresponding to SRS#2 0dB 1dB 1dB 2dB SRS#3 corresponding cumulative TPC 0dB 1dB 1dB 2dB

[0284] As shown in Table 13, when the PUSCH transmission time is 3, the cumulative TPC value of SRS#0 and SRS#1 associated with the same t value is -2dB, and the cumulative TPC value of SRS#2 and SRS#3 associated with the same t value is 2dB.

[0285] Method E

[0286] Combining the above-mentioned methods C and D for configuring t values, SRS resources in the first SRS resource set are associated with different t values, while SRS resources in the second SRS resource set are associated with the same t value, as shown in Table 14. The t values ​​are merely examples and do not constitute a limitation of this application. In this method, the t value for the TPC action corresponding to each index can be specified or agreed upon according to the order of the SRS resource set. Taking the example where the t value for the TPC action corresponding to each index is specified, that is, the t value is associated with the index value of the SRI indication information, as shown in Table 14.

[0287] It should be understood that in this embodiment, the index values ​​of the SRI indication information can also be configured to be associated with t values. For example, as shown in Table 14, the index values ​​0 to 3 of the SRI indication information are each associated with different t values, 0, 1, and 2. Therefore, index values ​​0 to 3 of the SRI indication information are the first index values, and index values ​​4 to 15 of the SRI indication information are the second index values. The grouping information associated with index values ​​4 to 15 is determined based on index values ​​0 to 3. Specifically, the index value corresponding to SRS resource 0 corresponding to index values ​​4 to 15 is determined based on the grouping information associated with index value 0, i.e., t = 0; the index value corresponding to SRS resource 1 is determined based on the grouping information associated with index value 1, i.e., t = 2, and so on. In this case, the t values ​​for index values ​​4 to 15 do not need to be explicitly configured.

[0288] Optionally, the second index value can also display an associated t value. In this case, the t value is only associated with the first SRS resource set among the multiple SRS resource sets indicated by the second index value. That is, index values ​​4 to 15 can display the configured t value, which corresponds to the first SRS resource set, for example, it can correspond to the SRS resource set that is sorted first.

[0289] Table 14

[0290]

[0291]

[0292] In Table 14, SRS#0 and SRS#1 belong to the first SRS resource set, but the t-value associated with SRS#0 is 0, while the t-value associated with SRS#1 is 2. The t-value associated with SRS#0 in SRI field index values ​​0-15 is 0, and the t-value associated with SRS#1 in SRI field index values ​​0-15 is 2. SRS#2 and SRS#3 belong to the second SRS resource set, so the t-value associated with SRS#2 and SRS#3 in SRI field index values ​​0-15 is 1. The calculation of cumulative TPC can be deduced by referring to methods a and b above, and will not be elaborated further here.

[0293] Method 2: PUSCH transmission based on non-codebook

[0294] When the total number of configured SRS resources is 2 and the maximum number of transport layers for PUSCH is 1, the SRI indication lookup table based on the non-codebook is shown in Table 5. The allocation of resource sets and the TPC calculation method are detailed in Tables 6 (Method A) and 7 (Method B) of Method 1.

[0295] When the total number of configured SRS resources is 4 and the maximum number of transport layers of PUSCH is 1, the SRI indication lookup table based on the non-codebook is shown in Table 15. At this time, the number of transport layers (Layer, represented by L) corresponds to the number of SRS resources in the SRS resource set corresponding to the index value of the SRI field.

[0296] Table 15 shows the configured SRS resource quantity = 4, maximum transport layer = 1.

[0297] 0 0(L＝1) 1 1(L＝1) 2 2(L＝1) 3 3(L＝1) 4 0,2(L＝1) 5 0,3(L＝1) 6 1,2(L＝1) 7 1,3(L＝1) 8 2,0(L＝1) 9 3,0(L＝1) 10 2,1(L＝1) 11 3,1(L＝1)

[0298] Table 15 can be understood in conjunction with Table 1. In Table 15, the index value of the SRI indication information is the index of the bit field mapping of indication information #A, and this bit field can be the SRI field. For example, when the index value of the SRI field is 0, the corresponding SRS resource is SRS#0; when the index value of the SRI field is 4, the corresponding SRS resources are SRS#0 and SRS#2. Radio access network device #A selects the transmit beam / transmit antenna group according to the SRS resource indication terminal device #A.

[0299] It should be understood that when the SRI indicator index value is 4-11 in Table 15, the transport layer number of PUSCH is 1, and multiple SRS resources will correspond to different time-frequency resources of PUSCH. For example, when the SRI indicator index value is 4, slot 1 occupied by PUSCH will correspond to SRS resource 0, and slot 2 occupied by PUSCH will correspond to SRS resource 1.

[0300] Radio access network device #A can group SRS resources. For example, when there are two TRPs, the SRS resources are grouped according to the number of TRPs. SRS#0 and SRS#1 are configured as the first SRS resource set, corresponding to the channel from terminal device #A to TRP#0; SRS#2 and SRS#3 are configured as the second SRS resource set, corresponding to the channel from terminal device #A to TRP#1. Different SRS resource sets can independently determine the SRS transmit power. When the index is 0-3, it indicates that one TRP is receiving data transmitted by terminal device #A; when the index is 4-11, it indicates that two TRPs are receiving data transmitted by terminal device #A. In Table 15, among the SRS resources corresponding to the index values ​​of the SRI indication information, there is at most one SRS resource belonging to the same SRS resource set, indicating that the maximum number of transmission layers for PUSCH is 1. In Table 15, the order of SRS resources belonging to the same SRS resource set is not limited. Furthermore, the SRS resources affected by the TPC adjustment amount (also called TPC indicator value) corresponding to each index in the table can be specified. The method of specification can be referred to as methods c and d above, and will not be repeated here.

[0301] Taking mode d as an example, after the radio access network device #A groups the SRS resources, it determines the index of the SRI field based on the SRS resources or the set of SRS resources corresponding to the TPC adjustment, and generates indication information #A based on this index and / or the TPC adjustment. For example, when the transport layer number is 1, the radio access network device #A determines that the SRS resource is SRS#0, and the SRS resource corresponding to the TPC adjustment is SRS#0. Since SRS#0 corresponds to TRP#0, it can be understood that the TPC adjustment is effective on TRP#0. Therefore, based on the SRS resource corresponding to the TPC adjustment, the index value of the SRI field can be determined to be 0. For example, when the transport layer number is 1, the wireless access network device #A determines the SRS resources as SRS#0 and SRS#2, and the SRS resource set corresponding to the TPC adjustment is the first SRS resource set (the second SRS resource set). Since SRS#0 belongs to the first SRS resource set (SRS#2 belongs to the second SRS resource set), the order of the SRS resources can be determined as SRS#0 first (i.e., the first SRS resource is SRS#0) and SRS#2 last (i.e., the second SRS resource is SRS#2). Based on the SRS resources corresponding to the TPC adjustment, the index value of the corresponding SRI field can be determined to be 4.

[0302] Optionally, the wireless access network device #A can configure the t value associated with SRS resources (or SRS resource sets) so that the TPC values ​​corresponding to SRS resources associated with the same t value can be accumulated. For the configuration of the t value, see Method C, Method D and Method E in Method 1. For the corresponding methods of accumulating TPC, see Method a and Method b in Method 1. They will not be described again here.

[0303] When the total number of configured SRS resources is 4 and the maximum number of transport layers of PUSCH is 2, the SRI indication lookup table based on the non-codebook is shown in Table 16. At this time, the number of transport layers corresponds to the number of SRS resources in the SRS resource set corresponding to the index value of the SRI field.

[0304] Table 16 shows the configured SRS resource quantity = 4, maximum transport layer number = 2.

[0305] 0 0(L＝1) 1 1(L＝1) 2 2(L＝1) 3 3(L＝1) 4 0,1(L＝2) 5 2,3(L＝2) 6 0,2(L＝1) 7 0,3(L＝1) 8 1,2(L＝1) 9 1,3(L＝1) 10 0,1,2,3(L＝2) 11 2,0(L＝1) 12 3,0(L＝1) 13 2,1(L＝1)

[0306] 15 2,3,0,1(L＝2)

[0307] Table 16 can be understood in conjunction with Table 1. In Table 16, the index value of the SRI indication information is the index of the bit field mapping of indication information #A, and this bit field can be the SRI field. For example, when the index value of the SRI field is 0, the corresponding SRS resource is SRS#0; when the index value of the SRI field is 4, the corresponding SRS resources are SRS#0 and SRS#1. Radio access network device #A selects the transmit beam / transmit antenna group according to the SRS resource indication terminal device #A.

[0308] Radio access network device #A can group SRS resources. For example, when there are two TRPs, the SRS resources are grouped according to the number of TRPs. SRS#0 and SRS#1 are configured as the first SRS resource set, and SRS#0 and SRS#1 correspond to the channel from terminal device #A to TRP#0; SRS#2 and SRS#3 are configured as the second SRS resource set, and SRS#2 and SRS#3 correspond to the channel from terminal device #A to TRP#1. Different SRS resource sets can independently determine the SRS transmit power. When the index is 0-5, it indicates that there is 1 TRP receiving data transmitted by terminal device #A; when the index is 6-15, it indicates that there are 2 TRPs receiving data transmitted by terminal device #A. In Table 16, the SRS resource set indicated by the SRI index has a maximum of two SRS resources, so the maximum number of transmission layers for PUSCH is 2. For example, when the index is 4, SRS#0 and SRS#1 both belong to the first SRS resource set, so the number of transmission layers for PUSCH is 2. For example, when the index is 11, SRS#2 belongs to the second SRS resource set, and SRS#0 belongs to the first SRS resource set. Each resource set contains only one SRS resource, so the transport layer number of PUSCH is 1. In Table 16, the order of SRS resources belonging to the same SRS resource set is not restricted. Furthermore, the SRS resources affected by the TPC adjustment amount (also called TPC indication value) corresponding to each index in the table can be specified. The method of specification can refer to methods c and d above, and will not be repeated here.

[0309] Taking mode d as an example, after the radio access network device #A groups the SRS resources, it determines the index of the SRI field based on the SRS resources or the set of SRS resources corresponding to the TPC adjustment, and generates indication information #A based on this index and / or the TPC adjustment. For example, when the transport layer number is 1, the radio access network device #A determines that the SRS resource is SRS#0, and the SRS resource corresponding to the TPC adjustment is SRS#0. Since SRS#0 corresponds to TRP#0, it can be understood that the TPC adjustment is effective on TRP#0. Therefore, based on the SRS resource corresponding to the TPC adjustment, the index value of the SRI field can be determined to be 0. For example, when the transport layer number is 1, the wireless access network device #A determines the SRS resources as SRS#0 and SRS#2, and the SRS resource set corresponding to the TPC adjustment is the first SRS resource set (the second SRS resource set). Since SRS#0 belongs to the first SRS resource set (SRS#2 belongs to the second SRS resource set), the order of the SRS resources can be determined as SRS#0 first (i.e., the first SRS resource is SRS#0) and SRS#2 last (i.e., the second SRS resource is SRS#2). Based on the SRS resources corresponding to the TPC adjustment, the index value of the corresponding SRI field can be determined to be 6.

[0310] Optionally, the wireless access network device #A can indicate the corresponding TPC adjustment amount by configuring the t-value associated with the SRS resource. The TPC adjustment amounts corresponding to SRS resources with the same t-value can be accumulated. The configuration methods for the t-value are shown in Methods C, D, and E of Method 1, and the corresponding methods for accumulating TPCs are shown in Methods a and b of Method 1, which will not be repeated here. Specifically, when Table 16 uses Method E to configure the t-value, the t-values ​​configured for SRS#0 and SRS#1 belonging to the same SRS resource set can be different (the t-values ​​configured for SRS#2 and SRS#3 can be different), which means that the TPC adjustment amounts for the uplink transmit power corresponding to SRS#0 and SRS#1 can be different. Similarly, other embodiments of this application that can be applied using this method are also within the scope of protection of this application, and will not be repeated elsewhere.

[0311] Optionally, the wireless access network device #A can configure the t-value associated with SRS resources so that the TPC values ​​corresponding to SRS resources associated with the same t-value can be accumulated. According to Table 16, the t-value configuration method is shown in Method C, Method D and Method E of Method 1. The corresponding methods for accumulating TPCs are shown in Method a and Method b of Method 1. In addition, the t-value can also be configured such that the t-value is associated not only with some index values ​​in the first index value set of SRI indication information, but also with the SRS resources or SRS resource sets corresponding to the other index values.

[0312] In one possible implementation, the wireless access network device #A determines the packet information corresponding to the fourth index value in the first index value set based on the packet information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1, and the number of SRS resource sets corresponding to the fourth index value is greater than 1. For example, the method of configuring the t value in Table 16.1.

[0313] It should be understood that in this embodiment, the index values ​​of the SRI indication information can also be configured to be associated with t values. For example, as shown in Table 16.1, the index values ​​0 to 5 of the SRI indication information are each associated with different t values, 0 to 3. Therefore, the index values ​​0 to 5 of the SRI indication information are the first index values, and the index values ​​6 to 15 of the SRI indication information are the second index values. The grouping information associated with index values ​​6 to 15 is determined based on index values ​​0 to 5. Specifically, among index values ​​6 to 15, the index value corresponding to SRS resource 0 is determined based on the grouping information associated with index value 0, that is, t = 0. The index values ​​corresponding to SRS resources 0 and 1 are determined based on the grouping information associated with index value 4, and so on. In this case, the t values ​​for index values ​​6 to 15 do not need to be explicitly configured.

[0314] Optionally, the second index value can also display an associated t value. In this case, the t value is only associated with the first SRS resource set among the multiple SRS resource sets indicated by the second index value. That is, index values ​​6 to 15 can display the configured t value, which corresponds to the first SRS resource set, for example, it can correspond to the SRS resource set that is sorted first.

[0315] Table 16.1

[0316]

[0317]

[0318] In Table 16.1, SRS#0 and SRS#1 belong to the first SRS resource set, and SRS#2 and SRS#3 belong to the second SRS resource set. In indices 0-3, the t-value associated with SRS#0 and SRS#1 is 0, which means the t-value associated with the first SRS resource set is 0. The t-value associated with SRS#2 and SRS#3 is 1, which means the t-value associated with the second SRS resource set is 1. In indices 6-9 and 11-14, the t-value associated with each SRS resource is the t-value of the set it belongs to. SRS#0 and SRS#1 in index 4 belong to the same resource set, and the t-value associated with index 4 is 2. Therefore, the t-value associated with SRS#0 and SRS#1 in indices 10 and 15, which belong to the same set as the SRS resources in index 4, is the same as that of index 4, which is 2. Similarly, SRS#2 and SRS#3 in index 5 belong to the same resource set, and the t-value associated with index 5 is 3. Therefore, the t-value associated with SRS#2 and SRS#3 in indices 10 and 15, which belong to the same set as the SRS resources in index 4, is the same as that of index 5, which is 3. Optionally, according to the convention, the t-value associated with indices 10 and 15 is the t-value corresponding to the SRS resource set that appears earlier in the sequence. Therefore, the t-value associated with index 10 is 2, and the t-value associated with index 15 is 3. It should be understood that in Table 16.1, the t value for the TPC action can be specified, that is, the t value is associated with the index value of the SRI indication information, or it can be agreed upon according to the order of SRS resources. The specific method has been explained in the above embodiments and will not be repeated here.

[0319] When the total number of configured SRS resources is 8 and the maximum number of transport layers for PUSCH is 4, the SRI indication lookup table based on the non-codebook is shown in Table 17. At this time, the number of transport layers corresponds to the number of SRS resources in the SRS resource set corresponding to the index value of the SRI field.

[0320] Table 17 shows the configured SRS resource quantity = 8, maximum transport layer number = 4.

[0321] 0 0(L＝1) 1 1(L＝1) 2 2(L＝1) 3 3(L＝1) 4 0,1(L＝2) 5 0,2(L＝2) 6 0,3(L＝2) 7 1,2(L＝2) 8 1,3(L＝2) 9 2,3(L＝2) 10 0,1,2(L＝3) 11 0,1,3(L＝3) 12 0,2,3(L＝3) 13 1,2,3(L＝3) 14 0,1,2,3(L＝4) 15 4(L＝1) 16 5(L＝1) 17 6(L＝1)

[0322] 19 4,5(L＝2) 20 4,6(L＝2) 21 4,7(L＝2) 22 5,6(L＝2) 23 5,7(L＝2) 24 6,7(L＝2) 25 4,5,6(L＝3) 26 4,5,7(L＝3) 27 4,6,7(L＝3) 28 5,6,7(L＝3) 29 4,5,6,7(L＝4) 30 0,4(L＝1) … … 45 3,7(L＝1) 46 0,1,4,5(L＝2) … … 81 2,3,6,7(L＝2) 82 0,1,2,4,5,6(L＝3) … … 97 1,2,3,5,6,7(L＝3) 98 0,1,2,3,4,5,6,7(L＝4) 99 4,0(L＝1) … … 114 7,3(L＝1) 115 4,5,0,1(L＝2) … … 150 6,7,2,3(L＝2) 151 4,5,6,0,1,2(L＝3) … … 166 5,6,7,1,2,3(L＝3) 167 4,5,6,7,0,1,2,3(L＝4)

[0323] Table 17 can be understood in conjunction with Table 1. In Table 17, the index value of the SRI indication information is the index of the bit field mapping of indication information #A, and this bit field can be the SRI field. For example, when the index value of the SRI field is 0, the corresponding SRS resource is SRS#0; when the index value of the SRI field is 4, the corresponding SRS resources are SRS#0 and SRS#1. Radio access network device #A selects the transmit beam / transmit antenna group according to the SRS resource indication terminal device #A. When the index is 30-45, the transmission layer number is 1, and the combination rule of the SRS resources indicated by SRI(s) is as follows: assuming x belongs to the first SRS resource set {0,1,2,3} and y belongs to the second SRS resource set {4,5,6,7}, then the combination method of the SRS resources is (x,y). When the index is 46-81, the transport layer is 2, and the SRS resource combination rule indicated by SRI(s) is as follows: assuming x1 and x2 belong to the first SRS resource set {0,1,2,3}, and y1 and y2 belong to the second SRS resource set {4,5,6,7}, then the combination of SRS resources is (x1,x2,y1,y2). When the index is 82-97, the transport layer is 3, and the SRS resource combination rule indicated by SRI(s) is as follows: assuming x1, x2, and x3 belong to the first SRS resource set {0,1,2,3}, and y, y2, and y3 belong to the second SRS resource set {4,5,6,7}, then the combination of SRS resources is (x1,x2,x3,y1,y2,y3). When the index is 99-114, the transport layer is 1, and the SRS resource combination rule indicated by SRI(s) is as follows: assuming x belongs to the first SRS resource set {0,1,2,3} and y belongs to the second SRS resource set {4,5,6,7}, then the combination of SRS resources is (y,x). When the index is 115-150, the transport layer is 2, and the SRS resource combination rule indicated by SRI(s) is as follows: assuming x1 and x2 belong to the first SRS resource set {0,1,2,3} and y1 and y2 belong to the second SRS resource set {4,5,6,7}, then the combination of SRS resources is (y1,y2,x1,x2). When the index is 151-166, the number of transport layers is 3. The combination rule of SRS resources indicated by SRI(s) is as follows: Assuming that x1, x2 and x3 belong to the first SRS resource set {0,1,2,3}, and y, y2 and y3 belong to the second SRS resource set {4,5,6,7}, then the combination of SRS resources is (y1,y2,y3,x1,x2,x3).

[0324] Radio access network device #A can group SRS resources. For example, when there are two TRPs, the SRS resources are grouped according to the number of TRPs. SRS#0, SRS#1, SRS#2, and SRS#3 are configured as the first SRS resource set ({0,1,2,3} in Table 17), then SRS#0, SRS#1, SRS#2, and SRS#3 correspond to the channel from terminal device #A to TRP#0; SRS#4, SRS#5, SRS#6, and SRS#7 are configured as the second SRS resource set ({4,5,6,7} in Table 17), then SRS#4, SRS#5, SRS#6, and SRS#7 correspond to the channel from terminal device #A to TRP#1. Different SRS resource sets can independently determine the SRS transmission power. When the index is 0-29, it indicates that there is one TRP receiving terminal device #A sending data; when the index is 30-167, it indicates that there is two TRP receiving terminal devices #A sending data (each index corresponds to an SRS resource consisting of SRS resources from two SRS resource sets). In Table 17, the SRS resource set indicated by the SRI index has a maximum of 4 SRS resources, so the maximum number of transmission layers for PUSCH is 4. For example, when the index is 4, SRS#0 and SRS#1 both belong to the first SRS resource set, so the number of transmission layers for PUSCH is 2. As another example, when the index is 11, SRS#0, SRS#1, and SRS#3 all belong to the first SRS resource set, so the number of transmission layers for PUSCH is 3. In Table 17, the order of SRS resources belonging to the same SRS resource set is not restricted.

[0325] Furthermore, the SRS resources affected by the TPC adjustment amount (also called TPC indicator value) corresponding to each index in the table can be specified. The method of specification can be referred to as methods c and d above, and will not be repeated here.

[0326] Taking mode d as an example, after the radio access network device #A groups the SRS resources, it determines the index of the SRI field based on the SRS resources or the set of SRS resources corresponding to the TPC adjustment, and generates indication information #A based on this index and / or the TPC adjustment. For example, when the transport layer number is 1, the radio access network device #A determines that the SRS resource is SRS#0, and the SRS resource corresponding to the TPC adjustment is SRS#0. Since SRS#0 corresponds to TRP#0, it can be understood that the TPC adjustment is effective on TRP#0. Therefore, based on the SRS resource corresponding to the TPC adjustment, the index value of the SRI field can be determined to be 0. For example, when the transport layer is 1, the wireless access network device #A determines the SRS resources as SRS#0 and SRS#4, and the SRS resource set corresponding to the TPC adjustment is the first SRS resource set (the second SRS resource set). Since SRS#0 belongs to the first SRS resource set (SRS#4 belongs to the second SRS resource set), the order of the SRS resources can be determined as SRS#0 first (i.e., the first SRS resource is SRS#0) and SRS#4 last (i.e., the second SRS resource is SRS#4). Based on the SRS resources corresponding to the TPC adjustment, the index value of the corresponding SRI field can be determined to be 30.

[0327] Optionally, the wireless access network device #A can indicate the corresponding TPC adjustment amount by configuring the t value associated with the SRS resource. The TPC adjustment amounts corresponding to SRS resources with the same t value can be accumulated. For the configuration of the t value, please refer to Method C, Method D and Method E in Method 1. For the corresponding methods of accumulating TPC, please refer to Method a and Method b in Method 1. They will not be described again here.

[0328] Optionally, when the cumulative TPC is implemented using method a, if there are two or more SRS resources in the SRS resource set corresponding to an index, the TRP corresponding to the TPC adjustment amount of that index, and all SRS resources in the SRS resource set corresponding to that TRP are simultaneously adjusted according to that TPC adjustment amount.

[0329] It should be understood that the embodiments of this application do not limit the grouping method of SRS resources or the order of SRS resources in each group.

[0330] It should be understood that Tables 5-17 above are merely illustrative examples, and other implementations using the same concepts or principles as the embodiments of this application are within the scope of protection of this application.

[0331] In S120, the wireless access network device #A sends SRI indication information #A1 and TPC indication information #A2 to the terminal device #A, and the terminal device #A receives the SRI indication information #A1 and TPC indication information #A2.

[0332] In S130, terminal device #A determines the SRS resource, the TRP corresponding to the TPC adjustment amount, and the transmit power for sending uplink data to the TRP based on SRI indication information #A1 and TPC indication information #A2.

[0333] Specifically, when the transmission mode is codebook-based, terminal device #A determines the index value of the SRI field and the TPC adjustment amount according to the instruction information #A, and determines the table to look up according to the number of configured SRS resources, such as Table 5 or Table 9 in S410. Assuming terminal device #A is configured with two SRS resources, SRS#0 and SRS#1, where SRS#0 corresponds to the channel of TRP#0 and SRS#1 corresponds to the channel of TRP#1, terminal device #A determines the corresponding SRS resources in the table as SRS#0 and SRS#1 according to the index, and determines the SRS resource corresponding to the TPC adjustment amount of the index as SRS#0 according to the convention. Then, terminal device #A adjusts the power of sending data to TRP#1 according to the TPC adjustment amount. The convention can be referred to as methods c and d in S110.

[0334] Taking mode d as an example, if the SRS resources corresponding to the index belong to the same SRS resource set, terminal device #A can adjust the uplink transmit power of the SRS resource set according to the TPC adjustment amount. If the SRS resources corresponding to the index belong to two SRS resource sets (the first SRS resource set and the second SRS resource set), terminal device #A can use all or part of the SRS resources in the earlier resource set (i.e., the first SRS resource set) as the SRS resources corresponding to the TPC adjustment amount, and use the TPC adjustment amount to adjust the transmit power of the corresponding data when sending the corresponding data. Optionally, terminal device #A can also determine the TRP corresponding to the SRS resource set whose uplink transmit power needs to be adjusted and / or the transmit power of the uplink data corresponding to all or part of the SRS resources in the SRS resource set according to the way of associating t values ​​according to mode A, mode B, mode C, mode D or mode E described in S110, and calculate the cumulative value of the TPC adjustment amount in combination with mode a or mode b.

[0335] Specifically, when the transmission mode is non-codebook based, terminal device #A determines the index value of the SRI field and the TPC adjustment amount according to the instruction information #A, and determines the table to look up according to the number of configured SRS resources and the maximum transmission layer of PUSCH, such as Table 15, Table 16, or Table 17 in S110. Assuming terminal device #A is configured with two SRS resources, SRS#0 and SRS#1, where SRS#0 corresponds to the channel of TRP#0 and SRS#1 corresponds to the channel of TRP#1, terminal device #A determines the corresponding SRS resources in the table as SRS#0 and SRS#1 according to the index, and determines the SRS resource corresponding to the TPC adjustment amount of the index as SRS#0 according to the convention. Then, terminal device #A adjusts the power of sending data to TRP#1 according to the TPC adjustment amount. The convention can be referred to as methods c and d in S110.

[0336] Taking mode d as an example, if the SRS resources corresponding to the index belong to the same SRS resource set, terminal device #A can adjust the uplink transmit power of the SRS resource set according to the TPC adjustment amount. If the SRS resources corresponding to the index belong to two SRS resource sets (the first SRS resource set and the second SRS resource set), terminal device #A can use all or part of the SRS resources in the earlier resource set (i.e., the first SRS resource set) as the SRS resources corresponding to the TPC adjustment amount, and use the TPC adjustment amount to adjust the transmit power of the corresponding data when sending the corresponding data. Optionally, terminal device #A can also determine the TRP corresponding to the SRS resource set whose uplink transmit power needs to be adjusted and / or the transmit power of the uplink data corresponding to all or part of the SRS resources in the SRS resource set according to the way of associating t values ​​according to mode A, mode B, mode C, mode D or mode E described in S110, and calculate the cumulative value of the TPC adjustment amount in combination with mode a or mode b.

[0337] Figure 5 This is a schematic flowchart of one instruction method 200 of this application.

[0338] In S210, the radio access network device #A determines the indication information #B, which is used to indicate the indexes of the two TPMIs and the transport layer number of the PUSCH.

[0339] The two TPMIs corresponding to each index value in instruction information #B have the following characteristics:

[0340] TPMI indicates that the precoding matrices have the same dimensions (number of rows and columns) and the same coherence type; and / or,

[0341] The TPMI indicates that the non-zero elements in the precoding matrix are in the same position.

[0342] Specifically, the coherence types of precoding matrices (codewords) include: incoherent, partially coherent, and fully coherent. Incoherent type means that only one non-zero power antenna port is used for the transmission of one layer of PUSCH, i.e., each column of the precoding matrix has only one non-zero element. Partially coherent type means that some non-zero power antenna ports are used for the transmission of one layer of PUSCH, i.e., only some elements in each column of the precoding matrix are non-zero elements. Fully coherent type means that for each layer of PUSCH, all antenna ports are non-zero power, i.e., all elements in each column of the precoding matrix are non-zero elements.

[0343] Optionally, the two TPMIs correspond to different time-frequency resources of PUSCH. For example, slot 1 occupied by PUSCH corresponds to TPMI1, and slot 2 occupied by PUSCH corresponds to TPMI2. That is, the precoding matrix for PUSCH transmission on slot 1 is determined according to TPMI1, and the precoding matrix for PUSCH transmission on slot 2 is determined according to TPMI2.

[0344] Optionally, the two TPMI-indicated non-zero antenna ports are identical.

[0345] The above method can reduce DCI overhead. Specifically, when the transmit antennas of the two TPMIs indicated by indication information #B are the same, the antenna ports selected by the two TPMIs for transmitting PUSCH are likely to be the same. Therefore, this correlation can be used to reduce the number of combinations of the two TPMIs.

[0346] Optionally, the wireless access network device #A sends codebook subset configuration information A or B, where codebook subset configuration information A indicates that the coherence types of the precoding matrices indicated by TPMI are the same, and codebook subset configuration information B indicates that the positions of non-zero elements in the precoding matrices indicated by TPMI are the same.

[0347] Specifically, when radio access network device #A configures two SRS resources for terminal device #A, and the two SRS resources correspond to different TRPs, the combination method of the two precoding matrices can be determined according to the feature #A (coherence type) of the precoding matrix used to send PUSCH data. Feature #A includes any of the following:

[0348] Feature #A1: The two TPMI-indicated precoding matrices have the same number of transmission layers, and the two TPMI-indicated precoding matrices correspond to the same number of antenna ports for transmitting data. That is, the number of non-zero elements in the columns (columns at the same position) of the two precoding matrices is the same. Specifically, if both precoding matrices are of size M*N (where M is the number of rows and N is the number of columns), 0≤m<M, 0≤n<N, then the number of non-zero elements in the nth column of the two precoding matrices is the same. For example, in Table 3, the two precoding matrices with TPMI indices 0 and 1 both have 1 non-zero element in their first column; therefore, it is considered that the two precoding matrices correspond to the same number of antenna ports for transmitting data.

[0349] Feature #A2: Two TPMI-indicated precoding matrices have the same transmission layer number, the same waveform, and the same antenna port position for the transmitted data corresponding to the two TPMI-indicated precoding matrices. This means the non-zero elements in the corresponding columns (columns at the same position) of the two precoding matrices are in the same position. Specifically, if both precoding matrices are M*N (where M is the number of rows and N is the number of columns), 0≤m<M, 0≤n<N, then the number of non-zero elements in the nth column of the two precoding matrices is the same, and the row number m where the non-zero elements are located is also the same. For example, in Table 3, the four precoding matrices with TPMI indices 2, 3, 4, and 5 have the same non-zero element position in their first column, both located in the first and second rows. Therefore, it is considered that the antenna port positions for the transmitted data corresponding to these two precoding matrices are the same.

[0350] For example, based on feature #A2, the correspondence between the combination of the two precoding matrices for sending PUSCH data and the index of TPMI and / or the transport layer number of PUSCH can be seen in Table 18-23.

[0351] Assuming the number of antenna ports is 2 and the maximum number of transmission layers is 2, the two precoding matrices can be configured to be identical when the codebook subset is uncorrelated, based on the fact that the non-zero elements in the corresponding columns (columns in the same position) of the two precoding matrices are in the same position, as shown in Table 18.

[0352] Table 18: Number of antenna ports = 2, Maximum number of transmission layers = 2

[0353] 0 1 layer: TPMI=0, TPMI=0 1 1 layer: TPMI=1, TPMI=1 2 2 layers: TPMI=0, TPMI=0 3 Reserved

[0354] The precoding matrix and transport layer index values ​​in Table 18 refer to the indices of the bit field mapping of the indication information #B, where the bit field can be the SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. In this configuration table 18, for example, an index of 0 indicates that the precoding matrix for PUSCH data sent to both TRPs uses a precoding matrix with 2 antenna ports, 1 transport layer, and a TPMI index of 0. An index of 3 indicates that the precoding matrix for PUSCH data sent to both TRPs uses a precoding matrix with 2 antenna ports, 2 transport layers, and a TPMI index of 0.

[0355] Assuming the number of antenna ports is 4 and the number of transmission layers is 1, the two precoding matrices can be configured to be identical when the codebook subset is uncorrelated, based on the fact that the non-zero elements in the corresponding columns (columns in the same position) of the two precoding matrices are in the same position, as shown in Table 19.

[0356] Table 19: Number of antenna ports = 4, Maximum number of transmission layers = 1

[0357] 0 1 layer: TPMI=0, TPMI=0 1 1 layer: TPMI=1, TPMI=1 2 1 layer: TPMI=2, TPMI=2 3 1 layer: TPMI=3, TPMI=3

[0358] The precoding matrix and transport layer index values ​​in Table 19 refer to the indices of the bit field mapping of the indication information #B, where the bit field can be an SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. For an interpretation of Table 19, please refer to the relevant explanation in Table 18.

[0359] Assuming the number of antenna ports is 4 and the maximum number of transmission layers is 4, the two precoding matrices can be configured to be identical when the codebook subset is uncorrelated, based on the fact that the non-zero elements in the corresponding columns (columns in the same position) of the two precoding matrices are in the same position, as shown in Table 20.

[0360] Table 20: Number of antenna ports = 4, Maximum number of transmission layers = 4

[0361] 0 1 layer: TPMI=0, TPMI=0 1 1 layer: TPMI=1, TPMI=1 2 1 layer: TPMI=2, TPMI=2 3 1 layer: TPMI=3, TPMI=3 4 2 layers: TPMI=0, TPMI=0 5 2 layers: TPMI=1, TPMI=1 6 2 layers: TPMI=2, TPMI=2 7 2 layers: TPMI=3, TPMI=3 8 2 layers: TPMI=4, TPMI=4 9 2 layers: TPMI=5, TPMI=5 10 3 layers: TPMI=0, TPMI=0 11 4 layers: TPMI=0, TPMI=0 12-15 Reserved

[0362] The precoding matrix and transport layer index values ​​in Table 20 refer to the indices of the bit field mapping of the indication information #B, where the bit field can be an SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. For an interpretation of Table 20, please refer to the relevant explanation in Table 18.

[0363] Assuming the number of antenna ports is 4 and the maximum number of transmission layers is 1, and based on the fact that the non-zero elements in the corresponding columns (columns in the same position) of the two precoding matrices are in the same position, the configuration is as shown in Table 21 when the codebook subset is partial and uncorrelated.

[0364] Table 21: Number of antenna ports = 4, Maximum number of transmission layers = 1

[0365]

[0366]

[0367] The precoding matrix and transport layer index values ​​in Table 21 refer to the indices of the bit field mapping of the indication information #B. The bit field can be the SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. In this configuration table 21, for example, an index of 0 indicates that the precoding matrices for PUSCH data sent to both TRPs use a precoding matrix with 4 antenna ports, 1 transport layer, and a TPMI index of 0. An index of 12 indicates that the precoding matrices for PUSCH data sent to both TRPs use precoding matrices with 4 antenna ports, 1 transport layer, and TPMI indices of 4 and 5, respectively, and the non-zero elements of these two precoding matrices are in the same position.

[0368] Assuming the number of antenna ports is 4, the maximum number of transmission layers is 4, and the number of transmission layers includes 2 and 3, based on the fact that the non-zero elements in the corresponding columns of the two precoding matrices (here, "corresponding columns" means that they are both in the nth column) are in the same position (here, "same position" means that the non-zero elements are both in the mth row and nth column), when the codebook subset = partial and uncorrelated, the configuration is as shown in Table 22.

[0369] Table 22: Number of antenna ports = 4, Maximum number of transmission layers = 4

[0370]

[0371]

[0372] The precoding matrix and transport layer index values ​​in Table 22 refer to the indices of the bit field mapping of the indication information #B. The bit field can be the SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. In this configuration table 22, for example, an index of 0 indicates that the precoding matrices for PUSCH data sent to both TRPs use a precoding matrix with 4 antenna ports, 1 transport layer, and a TPMI index of 0. An index of 32 indicates that the precoding matrices for PUSCH data sent to both TRPs use precoding matrices with 4 antenna ports, 1 transport layer, and TPMI indices of 4 and 5, respectively, and the non-zero elements of these two precoding matrices are in the same position.

[0373] Assuming the number of antenna ports is 4 and the maximum number of transmission layers is 1, and based on the fact that the non-zero elements in the corresponding columns of the two precoding matrices are in the same position (the non-zero elements are in the m-th row and n-th column), the configuration is as shown in Table 23 when the codebook subset = all, part and unrelated.

[0374] Table 23: Number of antenna ports = 4, Maximum number of transmission layers = 1

[0375]

[0376]

[0377] The precoding matrix and transport layer index values ​​in Table 23 refer to the indexes of the bit field mapping of the indication information #B. The bit field can be the SRI field. The "codebook subset" can be carried in radio resource control (RRC) signaling to indicate the configuration of the codebook subset. In Table 23, the TPMI indices 0-27 correspond to TPMI indices 0-27 respectively. The TPMI indices 37-276 are the complete combinations of pairs of indices 12-27, after removing the 16 cases of identical indices. That is, there are a total of 16*16=256 combinations, of which 16 combinations have identical indices, such as "TPMI=12, TPMI=12" or "TPMI=13, TPMI=13". Therefore, the remaining 240 combinations of TPMI indices corresponding to indices 37-276 will not be elaborated here. In configuration table 23, for example, when the index is 0, it means that the precoding matrices for the PUSCH data sent to both TRPs use a precoding matrix with 4 antenna ports, 1 transport layer, and a TPMI index of 0. As another example, when the index is 28, it means that the precoding matrices for the PUSCH data sent to both TRPs use precoding matrices with 4 antenna ports, 1 transport layer, and TPMI indices of 4 and 5, and the non-zero elements in these two precoding matrices are in the same position.

[0378] In S220, wireless access network device #A sends indication information #B to terminal device #A, and terminal device #A receives the indication information #B.

[0379] In S230, terminal device #A determines the corresponding transport layer number and TPMI index based on the precoding matrix and transport layer number index value in instruction information #B, and finds the corresponding precoding matrix by looking up a table based on the TPMI index and transport layer number.

[0380] Specifically, terminal device #A determines the transmission layer number of the PUSCH corresponding to the two TRPs and the index of TPMI by looking up tables, such as Tables 18 to 23, based on the index in instruction information #B. Then, based on the index of TPMI, it determines the precoding matrix corresponding to the two TRPs by looking up a table that shows the correspondence between the index of TPMI and the precoding matrix, such as Table 6.3.1.5-1 Precoding matrix W for single-layer transmission using two antenna ports.

[0381] It should be understood that the "terminal device #A lookup table" in this application is only one form of terminal device #A looking up the index (index value of SRI indication information, precoding matrix and transport layer number index value) and SRS resource number or other information. This application does not limit the form in which the correspondence is represented.

[0382] The above, combined with Figure 4 and Figure 5 The instruction method according to embodiments of this application is described below, in conjunction with Figures 6 to 9 Describes a device according to an embodiment of this application.

[0383] Figure 6 This is a schematic block diagram of an example of a terminal device according to an embodiment of this application. Figure 6 As shown, the terminal device 300 includes:

[0384] The receiving unit 310 is used to receive SRS resource indication information SRI. The index value included in the SRI belongs to a first index value set. The first index value set includes a first index value and a second index value. The first index value and the second index value correspond to the same multiple SRS resources, and the SRS resource sets with different power to be adjusted corresponding to the first index value and the second index value are different.

[0385] The transmitting unit 330 transmits Physical Uplink Shared Channel (PUSCH) data according to the SRI.

[0386] In one possible implementation, the SRI includes either the first index value or the second index value, and the terminal device further includes: the receiving unit 310, which is further configured to receive Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of the PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets, wherein the first SRS resource set is one of the plurality of SRS resource sets; and a processing unit 320, which is configured to determine the first SRS resource set according to the SRI, wherein the first SRS resource set corresponding to the first index value and the second index value are different.

[0387] In one possible implementation, the first index value and the second index value correspond to different first SRS resources; the first SRS resource set is the SRS resource set to which the first SRS resource belongs.

[0388] In one possible implementation, the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0389] In one possible implementation, the processing unit 320 is further configured to determine the packet information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the processing unit 320 determines the packet information corresponding to the fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; and the processing unit 320 determines the transmission power of the PUSCH based on the packet information.

[0390] In one possible implementation, the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the processing unit 320 is further configured to determine the grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set, respectively.

[0391] In one possible implementation, the SRS resource corresponding to the fourth index value includes a first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

[0392] Figure 7 This is a schematic block diagram of an example of a wireless access network device according to an embodiment of this application. Figure 7 As shown, the wireless access network device 400 includes:

[0393] Processing unit 410 is used to determine SRS resource indication information SRI. The index value included in the SRI belongs to a first index value set. The first index value set includes a first index value and a second index value. The first index value and the second index value correspond to the same multiple SRS resources. However, the SRS resource sets with power to be adjusted corresponding to the first index value and the second index value are different. The SRI is used to instruct the terminal device to send Physical Uplink Shared Channel (PUSCH) data.

[0394] The transmitting unit 420 is used to transmit the SRI.

[0395] In one possible implementation, the processing unit 410 is further configured to determine Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of the PUSCH transmission corresponding to a first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets, the SRI including the first index value or the second index value, and the first SRS resource sets corresponding to the first index value and the second index value being different; the processing unit 410 determines the first SRS resource set and determines the SRI based on the first SRS resource set; the sending unit 420 sends the TPC indication information.

[0396] In one possible implementation, the first index value and the second index value correspond to different first SRS resources; the first SRS resource set is the SRS resource set to which the first SRS resource belongs.

[0397] In one possible implementation, the plurality of SRS resource sets further includes a second SRS resource set; the first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

[0398] In one possible implementation, the processing unit 410 determines the packet information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; the processing unit 410 determines the packet information corresponding to the fourth index value in the first index value set based on the packet information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; the processing unit 410 determines the transmission power of the PUSCH based on the packet information.

[0399] In one possible implementation, the SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; the processing unit 410 determines the grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set, respectively.

[0400] In one possible implementation, the SRS resource corresponding to the fourth index value includes a first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set; the grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

[0401] Figure 8 This is a schematic block diagram of another example of a terminal device according to an embodiment of this application. For example... Figure 8 As shown, the terminal device 500 includes a transceiver 510 and a processor 520. The processor 520 is configured to support the terminal device in performing the corresponding functions of the terminal device in the above-described method. Optionally, the terminal device 500 may further include a memory 530, which is coupled to the processor 520 to store necessary program instructions and data of the terminal device 500. The processor 520 is specifically used to execute the instructions stored in the memory 530. When the instructions are executed, the terminal device performs the methods performed by the terminal device in the above-described method.

[0402] It should be noted that, Figure 6 The terminal device 300 shown can be accessed via Figure 8 The terminal device 500 shown is used to implement this. For example, Figure 6 The receiving unit 310 and the transmitting unit 330 shown can be implemented by a transceiver 510, and the processing unit 320 can be implemented by a processor 520.

[0403] Figure 9 This is a schematic block diagram of another example of a wireless access network device according to an embodiment of this application. For example... Figure 9 As shown, the wireless access network device 600 includes a transceiver 610 and a processor 620. The processor 620 is configured to support the wireless access network device in performing the corresponding functions of the wireless access network device in the above-described method. Optionally, the wireless access network device may further include a memory 630, which is coupled to the processor 620 to store necessary program instructions and data of the wireless access network device. The processor 620 is specifically used to execute the instructions stored in the memory 630. When the instructions are executed, the wireless access network device performs the methods performed by the wireless access network device in the above-described method.

[0404] It should be noted that, Figure 7 The wireless access network device 400 shown can be Figure 9 The wireless access network device 600 shown is used to implement this. For example, Figure 7 The transmitting unit 420 shown can be implemented by the transceiver 610, and the processing unit 410 can be implemented by the processor 620.

[0405] It should be noted that this application uses a terminal device and a wireless access network device as examples to describe an indication method, a terminal device, and a wireless access network device according to an embodiment of this application. It should be understood that the indication method of an embodiment of this application can also be implemented by two baseband chips. The first baseband chip is used to implement the relevant operations of the terminal device in the embodiment of this application, and the second baseband chip is used to implement the relevant operations of the wireless access network device in the embodiment of this application.

[0406] It should also be noted that the input / output circuit of the first baseband chip can be used to implement the transceiver-related operations of the aforementioned terminal device, and the input / output circuit of the second baseband chip can be used to implement the transceiver-related operations of the aforementioned wireless access network device.

[0407] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0408] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0409] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital versatile disc (DVD)), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0410] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0411] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0412] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0413] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0414] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0415] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0416] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a wireless access network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0417] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An indication method applied to a terminal device, characterized in that, include: The resource indication information (SRI) received from the sounding reference signal (SRS) includes an index value, which belongs to a first set of index values. The first set of index values ​​includes a first index value and a second index value. The first index value and the second index value correspond to the same multiple SRS resources. The multiple SRS resources corresponding to the first index value and the second index value belong to multiple sets of SRS resources. The first index value and the second index value are used to indicate the mapping order between the multiple SRS resources or the multiple SRS resource sets and different time-frequency resources of the Physical Uplink Shared Channel (PUSCH). PUSCH data is sent according to the SRI.

2. The method as described in claim 1, characterized in that, The index value is either the first index value or the second index value, and the method further includes: Receive Transmission Power Control (TPC) indication information, the TPC indication information being used to adjust the transmission power of PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets, the first SRS resource set being one of the plurality of SRS resource sets; The first SRS resource set is determined based on the SRI, wherein the first SRS resource set corresponding to the first index value and the second index value are different.

3. The method as described in claim 2, characterized in that, The method further includes: The first index value and the second index value correspond to different first SRS resources, wherein the first SRS resource is the SRS resource that is first in the first SRS resource set.

4. The method as described in claim 2 or 3, characterized in that, The method further includes: The plurality of SRS resource sets also includes a second SRS resource set; The first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

5. The method of claim 4, further comprising: Determine the grouping information corresponding to the third index value in the first set of index values, wherein the number of SRS resource sets corresponding to the third index value is 1; Based on the grouping information corresponding to the third index value, determine the grouping information corresponding to the fourth index value in the first index value set, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; The transmission power of the PUSCH is determined based on the packet information.

6. The method of claim 5, wherein the method comprises: The SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; The grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set are determined respectively.

7. The method of claim 5, wherein the method comprises: The SRS resource corresponding to the fourth index value includes the first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set. The grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

8. The method as described in claim 1, characterized in that, The first set of index values ​​also includes a third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resources corresponding to the third index value belong to a single SRS resource set.

9. The method as described in claim 1, characterized in that, The first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the plurality of SRS resource sets to different time-frequency resources of the PUSCH, including: the order of the SRS resources corresponding to the first index value and the order of the SRS resources corresponding to the second index value are different.

10. The method as described in claim 1, characterized in that, The first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the plurality of SRS resource sets to different time-frequency resources of the PUSCH, including: the order of the SRS resource sets corresponding to the first index value and the order of the SRS resource sets corresponding to the second index value are different.

11. The method according to any one of claims 8-10, characterized in that, The correspondence between the index values ​​included in the SRI and the SRS resources is as follows: 。 12. An indication method applied to a wireless access network device, characterized in that, include: The detection reference signal SRS resource indication information (SRI) is determined. The SRI includes an index value, which belongs to a first set of index values. The first set of index values ​​includes a first index value and a second index value. The first index value and the second index value correspond to the same multiple SRS resources. The multiple SRS resources corresponding to the first index value and the second index value belong to multiple sets of SRS resources. The first index value and the second index value are used to indicate the mapping order between the multiple SRS resources or the multiple sets of SRS resources and different time-frequency resources of the Physical Uplink Shared Channel (PUSCH). The SRI is used to instruct the terminal device to send PUSCH data. Send the SRI.

13. The method as described in claim 12, characterized in that, The method includes: Determine Transmission Power Control (TPC) indication information, which is used to adjust the transmission power of PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets. The first SRS resource set is one of the plurality of SRS resource sets. The index value is either the first index value or the second index value, and the first SRS resource set corresponding to the first index value and the second index value are different. Determine the first SRS resource set, and determine the SRI based on the first SRS resource set; Send the TPC instruction information.

14. The method as described in claim 13, characterized in that, The method further includes: The first index value and the second index value correspond to different first SRS resources, wherein the first SRS resource is the SRS resource that is first in the first SRS resource set.

15. The method as described in claim 13 or 14, characterized in that, The method further includes: The plurality of SRS resource sets also includes a second SRS resource set; The first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

16. The method of claim 15, further comprising: Determine the grouping information corresponding to the third index value in the first set of index values, wherein the number of SRS resource sets corresponding to the third index value is 1; Based on the grouping information corresponding to the third index value, determine the grouping information corresponding to the fourth index value in the first index value set, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1; The transmission power of the PUSCH is determined based on the packet information.

17. The method of claim 16, wherein the method comprises: The SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; The grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set are determined respectively.

18. The method of claim 16, wherein the method comprises: The SRS resource corresponding to the fourth index value includes the first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set. The grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

19. The method as described in claim 12, characterized in that, The first set of index values ​​also includes a third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resources corresponding to the third index value belong to a single SRS resource set.

20. The method of claim 12, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resources corresponding to the first index value is different from the order of the SRS resources corresponding to the second index value.

21. The method of claim 12, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resource sets corresponding to the first index value is different from the order of the SRS resource sets corresponding to the second index value.

22. The method according to any one of claims 19-21, characterized in that, The correspondence between the index values ​​included in the SRI and the SRS resources is as follows: 。 23. A terminal device, characterized in that, The terminal device includes: The receiving unit is configured to receive Sound Reference Signal Resource Indication Information (SRI), wherein the SRI includes an index value, the index value belongs to a first set of index values, the first set of index values ​​includes a first index value and a second index value, the first index value and the second index value correspond to the same multiple SRS resources, the SRS resources corresponding to the first index value and the second index value belong to multiple sets of SRS resources, and the first index value and the second index value are used to indicate the mapping order between the multiple SRS resources or the multiple sets of SRS resources and different time-frequency resources of the Physical Uplink Shared Channel (PUSCH); The sending unit sends PUSCH data according to the SRI.

24. The terminal device as described in claim 23, characterized in that, The index value is either the first index value or the second index value, and the terminal device further includes: The receiving unit is further configured to receive Transmission Power Control (TPC) indication information, which is used to adjust the transmission power of PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets, wherein the first SRS resource set is one of the plurality of SRS resource sets. A processing unit is configured to determine the first SRS resource set based on the SRI, wherein the first SRS resource set corresponding to the first index value and the second index value are different.

25. The terminal device as described in claim 24, characterized in that, The terminal device also includes: The first index value and the second index value correspond to different first SRS resources, wherein the first SRS resource is the SRS resource that is first in the first SRS resource set.

26. The terminal device as described in claim 24 or 25, characterized in that, The terminal device also includes: The plurality of SRS resource sets also includes a second SRS resource set; The first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

27. The terminal device of claim 26, further comprising: The processing unit is further configured to determine the grouping information corresponding to the third index value in the first index value set, wherein the number of SRS resource sets corresponding to the third index value is 1; The processing unit determines the grouping information corresponding to the fourth index value in the first index value set based on the grouping information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1. The processing unit determines the transmission power of the PUSCH based on the packet information.

28. The terminal device of claim 27, wherein the terminal device comprises: The SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; The processing unit is further configured to determine the grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set, respectively.

29. The terminal device of claim 27, wherein the terminal device comprises: The SRS resource corresponding to the fourth index value includes the first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set. The grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

30. The terminal device as described in claim 23, characterized in that, The first set of index values ​​also includes a third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resources corresponding to the third index value belong to a single SRS resource set.

31. The terminal device as claimed in claim 23, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resources corresponding to the first index value is different from the order of the SRS resources corresponding to the second index value.

32. The terminal device as claimed in claim 24, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resource sets corresponding to the first index value is different from the order of the SRS resource sets corresponding to the second index value.

33. The terminal device according to any one of claims 30-32, characterized in that, The correspondence between the index values ​​included in the SRI and the SRS resources is as follows: 。 34. A wireless access network device, characterized in that, The wireless access network device includes: The processing unit is configured to determine SRS Resource Indication Information (SRI), wherein the SRI includes an index value, the index value belongs to a first set of index values, the first set of index values ​​includes a first index value and a second index value, the first index value and the second index value correspond to the same multiple SRS resources, the SRS resources corresponding to the first index value and the second index value belong to multiple sets of SRS resources, the first index value and the second index value are used to indicate the mapping order between the multiple SRS resources or the multiple sets of SRS resources and different time-frequency resources of the Physical Uplink Shared Channel (PUSCH), and the SRI is used to instruct the terminal device to send PUSCH data; A transmitting unit, which is used to transmit the SRI.

35. The wireless access network device as described in claim 34, characterized in that, The wireless access network device includes: The processing unit is further configured to determine Transmission Power Control (TPC) indication information, which is used to adjust the transmission power of PUSCH transmission corresponding to the first SRS resource set among the plurality of SRS resource sets. The first SRS resource set is one of the plurality of SRS resource sets, and the index value is either the first index value or the second index value, and the first SRS resource set corresponding to the first index value and the second index value are different. The processing unit determines the first SRS resource set and determines the SRI based on the first SRS resource set; The sending unit sends the TPC indication information.

36. The wireless access network device as described in claim 35, characterized in that, The wireless access network device also includes: The first index value and the second index value correspond to different first SRS resources, wherein the first SRS resource is the SRS resource that is first in the first SRS resource set.

37. The wireless access network device as described in claim 35 or 36, characterized in that, The wireless access network device also includes: The plurality of SRS resource sets also includes a second SRS resource set; The first SRS resource set and the second SRS resource set correspond to different time-domain units of the PUSCH.

38. The wireless access network device of claim 37, further comprising: The processing unit determines the grouping information corresponding to the third index value in the first index value set, and the number of SRS resource sets corresponding to the third index value is 1. The processing unit determines the grouping information corresponding to the fourth index value in the first index value set based on the grouping information corresponding to the third index value, wherein the number of SRS resource sets corresponding to the fourth index value is greater than 1. The processing unit determines the transmission power of the PUSCH based on the packet information.

39. The wireless access network device of claim 38, wherein the wireless access network device comprises: The SRS resources corresponding to the fourth index value include SRS resources belonging to the first SRS resource set and the second SRS resource set; The processing unit determines the grouping information corresponding to the SRS resources belonging to the first SRS resource set and the grouping information corresponding to the SRS resources belonging to the second SRS resource set.

40. The wireless access network device of claim 38, wherein the wireless access network device comprises: The SRS resource corresponding to the fourth index value includes the first SRS resource, and the first SRS resource and the second SRS resource corresponding to the third index value belong to the same SRS resource set. The grouping information corresponding to the first SRS resource is the same as the grouping information corresponding to the third index value.

41. The wireless access network device as described in claim 34, characterized in that, The first set of index values ​​also includes a third index value, wherein the number of SRS resources corresponding to the third index value is 1, or the SRS resources corresponding to the third index value belong to a single SRS resource set.

42. The wireless access network device of claim 34, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resources corresponding to the first index value is different from the order of the SRS resources corresponding to the second index value.

43. The wireless access network device of claim 34, wherein the first index value and the second index value are used to indicate the mapping order between the plurality of SRS resources or the set of the plurality of SRS resources to different time-frequency resources of the PUSCH, characterized in that, The order of the SRS resource sets corresponding to the first index value is different from the order of the SRS resource sets corresponding to the second index value.

44. The wireless access network device according to any one of claims 41-43, characterized in that, The correspondence between the index values ​​included in the SRI and the SRS resources is as follows: 。 45. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed,... Cause the device to perform the method as described in any one of claims 1 to 11, or This causes the device to perform the method as described in any one of claims 12 to 22.

46. ​​A chip system, characterized in that, Includes: a processor, used to retrieve and run computer programs from memory. This causes the communication device equipped with the chip system to perform the method as described in any one of claims 1 to 11; or This causes the communication device equipped with the chip system to perform the method as described in any one of claims 12 to 22.

47. A wireless communication device, characterized in that, include: A unit for implementing the method according to any one of claims 1 to 11; or Units for implementing the method according to any one of claims 12 to 22.

48. A computer program product, the computer program product comprising: Computer program code, when executed by a terminal device, causes the terminal device to perform the method as described in any one of claims 1 to 11.

49. A computer program product, the computer program product comprising: Computer program code, when executed by a wireless access network device, causes the wireless access network device to perform the method as described in any one of claims 12 to 22.

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