WO2022040890A1

WO2022040890A1 - Information indication method and apparatus

Info

Publication number: WO2022040890A1
Application number: PCT/CN2020/110920
Authority: WO
Inventors: 苏立焱
Original assignee: 华为技术有限公司
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2022-03-03
Also published as: CN115989704A

Abstract

An information indication method and apparatus, used for solving the technical problem that an SRI indication field sent by a network device is too large when a terminal device supports many transmit antennas. The method comprises: a network device obtains K SRS resource subsets according to N SRS resources of a terminal device, and sets an SRI indication field to comprise at least one sub-portion to instruct the terminal device to determine, according to the at least one sub-portion and from the K SRS resource subsets, precoding used for uplink transmission. By using a combined mode of dividing the N SRS resources and changing the structure of the SRI indication field, the precoding used for uplink transmission is indicated, and as long as the N SRS resources are divided in a reasonable mode, even if the terminal device supports many transmit antennas and thus the value of N is large, the number of bits of the SRI indication field can be compressed to be less than N. Such a grouping indication mode is helpful to solve the technical problem that the SRI indication field is too large.

Description

A kind of information indicating method and device

technical field

The present application relates to the field of communication technologies, and in particular, to an information indication method and device.

Background technique

Multiple input multiple output (multiple input multiple output, MIMO) technology is a core technology in long term evolution (long term evolution) systems and new radio (New Radio, NR) systems. In the previous single input single output (SISO) system, since a single transmitting antenna is used between the transmitting end and the receiving end, the transmitting end will transmit the signal to the receiving end by broadcasting. In this case , the energy of the signal will radiate around, causing the energy of the signal to be wasted. In a MIMO system, multiple transmitting antennas are used between the transmitting end and the receiving end. The transmitting end can precode the signal before sending the signal, and the precoded signal can be sent to each Receiving end. It can be seen that the MIMO technology performs spatial diversity and multiplexing through multiple transmit antennas, which can improve the reliability and channel gain of data transmission.

In the NR system, the uplink physical shared channel (PUSCH) can include the following two transmission schemes according to different precoding methods: codebook-based (CB) transmission and non-codebook-based transmission (non-codebook-based, NCB) transmission. For CB transmission, the same codebook is maintained between the network equipment and the terminal equipment. The network equipment provides the terminal equipment with an indication of the transmission precoding matrix, so that the terminal equipment can select the precoding used for PUSCH transmission from the codebook according to the indication. . For NCB transmission, the precoding resources corresponding to each sounding reference signal (SRS) are calculated by the terminal device, and the network device carries the SRS resource identifier (SRS Resource Indicator) in the downlink control information (downlink control information, DCI). , SRI) indication field, so that the terminal device selects the precoding used for PUSCH transmission from the precoding resources calculated by itself according to the SRI indication field. NCB transmission can obtain precoding resources by self-calculation of the terminal equipment, and its adaptability to the terminal equipment in various occasions is relatively good, so it is more and more widely used.

At present, a terminal device can only support 4 transmit antennas at most. According to the design logic of the existing standard, the SRI indication field also occupies 4 bits at most. However, in the future evolution of the system, the number of transmit antennas supported by the terminal equipment will further increase, which will lead to a corresponding linear increase in the number of bits occupied by the SRI indication field. For example, when the terminal device supports 8 transmit antennas, according to the design logic of the existing standard, the number of bits occupied by the SRI indication field will also increase to 8 bits. This method will greatly increase the transmission burden of DCI, easily cause packet loss, and reduce the transmission reliability of DCI. At this stage, there is no solution to solve the technical problem that the SRI indication field sent by the network device is too large when the terminal device supports more transmit antennas (eg, 8 or more transmit antennas).

SUMMARY OF THE INVENTION

The present application provides an information indication method and apparatus to solve the technical problem that the SRI indication field sent by the network device is too large when the terminal device supports more transmit antennas.

In a first aspect, the present application provides an information indication method, which is applied to a terminal device. The method includes: the terminal device receives first information sent by a network device, and indicates at least one sub-part of a field according to an SRI carried in the first information. , determine the target SRS resource from the K SRS resource subsets, and then use the target SRS resource to determine the precoding used for PUSCH transmission. The first information includes an SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target sounding reference signal SRS resource to enable the terminal equipment to determine the precoding used for the physical uplink shared channel PUSCH transmission, and the target SRS The resource is one or more of N SRS resources used by the terminal device when sending SRS, the N SRS resources are used to obtain K SRS resource subsets, and each SRS resource subset of the K SRS resource subsets includes N SRS resources One or more of the SRS resources. Among them, K and N are positive integers, and K≤N.

The above design uses a combination of dividing SRS resources and changing the structure of the SRI indication field to indicate the precoding used for uplink transmission, as long as the division method of the N SRS resources is reasonable (for example, the number of SRS resource subsets and the number of each SRS resource are reasonably controlled. The number of SRS resources in the subset), even if the terminal device supports more transmit antennas, resulting in a larger value of N, the number of bits in the SRI indication field can be compressed to less than N. Compared with the way of directly using N bits to indicate N SRS resources, this way of grouping indication helps to solve the technical problem that the SRI indication field of the network device is too large when the terminal device supports more transmit antennas. The data amount of the DCI carrying the SRI indication field can also be correspondingly reduced, and the reliability of the DCI transmission can be improved.

In an optional design, before receiving the first information sent by the network device, the terminal device also receives configuration information sent by the network device, where the configuration information is used to indicate that each SRS resource subset of the K SRS resource subsets contains SRS resources. In this way, the K SRS resource subsets of the terminal device are configured in advance by the network device and notified to the terminal device, which helps the network device and the terminal device to perform non-codebook-based transmission operations based on the unified configuration subsequently, and improves the SRI performance of the network device. The convenience of indicating the target SRS resource in the indication field.

In an optional design, when K is greater than or equal to 2, at least one subsection may include a first subsection and a second subsection, and the first subsection is used to indicate one SRS resource in the K SRS resource subsets Subset, the second subsection is used to indicate one or more SRS resources in a subset of SRS resources. In this case, the terminal device determines the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI indication field, including: The target SRS resource subset is determined centrally, and then the target SRS resource is determined from the target SRS resource subset according to the second sub-part of the SRI indication field. In this way, by dividing the SRI indication field into a two-level indication structure, the two-level indication structure can be used to accurately indicate the target SRS resource from the K SRS resource subsets. This indication method corresponds to the method of dividing the SRS resources, which helps In the case of dividing SRS resources, it is ensured that the terminal device normally transmits uplink data to the network device.

In the embodiment of the present application, the SRS resources included in the K SRS resource subsets may be in various situations, for example:

In one case, the transmission performance of the SRS resources included in the K SRS resource subsets is stronger than the preset transmission performance. In this way, the network device can select the target SRS resource from the SRS resources with stronger transmission performance, so that the transmission performance of the target SRS resource is better, which helps to improve the efficiency of the uplink transmission of the terminal device.

In another case, the beam interference probability between the SRS resources included in the K SRS resource subsets and other terminal equipments is less than a preset probability. In this way, the target SRS resource selected by the network device also has a high probability of not having beam collision with other terminal devices, so that the terminal device uses the precoding determined by the target SRS resource to perform uplink transmission with better quality.

In yet another case, the transmission performance of the SRS resources included in the K SRS resource subsets is stronger than the preset transmission performance, and the beam interference probability between the SRS resources included in the K SRS resource subsets and other terminal equipment is smaller than the preset probability . In this way, the network device can select the target SRS resource from the SRS resources with strong transmission performance and no beam collision with other terminal devices, which not only helps to improve the efficiency of uplink transmission of the terminal device, but also improves the quality of uplink transmission.

In an optional design, the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same, and the value of K and the SRS resources in each SRS resource subset can be determined by high-level signaling Configured or predefined. In this case, after the terminal device receives the configuration information sent by the network device, it can also determine the first bit number according to the value of K, and determine the second bit number according to the number of SRS resources included in each SRS resource subset number. The sum of the first number of bits and the second number of bits is equal to the number of bits of the SRI indication field, the first number of bits is used by the terminal device to determine the first subsection from the SRI indication field, and the number of second bits is Used by the terminal device to determine the second subsection from the SRI indication field. In this way, the first number of bits and the second number of bits are obtained by the terminal device itself, rather than being calculated and notified by the network device, which can reduce signaling overhead transmitted by the network device and the terminal device.

In an optional design, the first number of bits and the second number of bits may be configured or predefined by high-level signaling, wherein the first number of bits is used to determine the first subsection from the SRI indication field , the second number of bits is used to determine the second subsection from the SRI indication field. In this way, the first bit number and the second bit number corresponding to the terminal device are calculated by the network device and sent to the terminal device, so that the relevant parameters used for the uplink transmission of the terminal device are determined by the network device, thereby helping to improve network performance. Device-to-terminal device management makes uplink transmission more in line with standard procedures.

In an optional design, when K is 1, then: the SRS resource subset includes L SRS resources among the N SRS resources, the number of bits in the SRI indication field is L, and the number of bits in each of the L bits is L. A combination of values constitutes a bit state of L bits, and one or more SRS resources in the L SRS resources correspond to a bit state of L bits, where L is a positive integer smaller than N. In this case, the terminal device determines the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI, including: Determine the target SRS resource. In this way, one SRS resource subset is formed by selecting L SRS resources from N SRS resources, so that the network device only needs to select the target SRS resource from the L SRS resources, so the number of bits corresponding to the SRI indication field only needs to be It is only necessary to indicate the combined state of the L SRS resources, instead of indicating all the combined states of the N SRS resources, in this way, the number of bits of the SRI indication field can be reduced.

In an optional design, when K is 2, then: the K SRS resource subsets include a first SRS resource subset and a second SRS resource subset, and the first SRS resource subset includes N SRS resource subsets. There are M SRS resources, and the second SRS resource subset includes NM SRS resources other than the M SRS resources among the N SRS resources, where M is a positive integer smaller than N. In this case, at least one subsection may include a first subsection and a second subsection, the first subsection is used to indicate one or more SRS resources in the first SRS resource subset, and the second subsection is used to indicate the first subsection One or more SRS resources in a subset of two SRS resources. The terminal device determines the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI indication field, including: the terminal device determines the first target from the first SRS resource subset according to the first sub-part of the SRI indication field. SRS resource, and then determine the second target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field, and finally use the first target SRS resource and the second target SRS resource as one or more target SRS resources. Through this design, the network device can select part of the SRS resources from the two SRS resource subsets to form the target SRS resources, instead of selecting all the target SRS resources from only one SRS resource subset, which helps to improve the network equipment. Select the balance of SRS resources.

In an optional design, the M SRS resources included in the first SRS resource subset are the first M SRS resources in which the N SRS resources are arranged in descending order of transmission performance, and the NM SRS resources included in the second SRS resource subset The SRS resources are the last NM SRS resources in which the N SRS resources are arranged in descending order of transmission performance. Through this design, the network device can schedule the SRS resources according to the strength of the transmission performance of the SRS resources, which not only helps the network device to schedule more SRS resources with strong transmission performance as much as possible, but also can schedule SRS resources with strong transmission performance. When SRS resources have beam collisions, network equipment can schedule SRS resources with weak transmission performance, so that both the ability to schedule SRS resources with strong transmission performance and the ability to avoid interference from other beams can be taken into account, which is convenient for subsequent terminal equipment to transmit with better uplink transmission ability. Uplink data of the beam interference of the terminal equipment.

In an optional design, configuration information is used to indicate M. In this case, after receiving the configuration information sent by the network device, the terminal device may further divide the N SRS resources into the first SRS resource subset and the second SRS resource subset according to M. In this way, the terminal device can divide N SRS resource subsets in advance according to the manner indicated by the network device, so that when the SRI indication field is subsequently received, the terminal device can accurately determine the target SRS resource.

In an optional design, the length of the first sub-part is M bits, and each bit in the M bits corresponds to one SRS resource in the M SRS resources, when the value of the first bit in the M bits is the th When the value is one, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for PUSCH transmission, and the first bit is any one of the M bits. In this case, the terminal device determines the first target SRS resource from the first SRS resource subset according to the first sub-part of the SRI indication field, including: the terminal device sets the bit in the first sub-part as the first value The corresponding SRS resource is used as the first target SRS resource. Through this design, the terminal device can determine whether each SRS resource in the first SRS resource subset is invoked according to each bit of the first sub-part in the SRI indication field, when the SRS resource in the first SRS resource subset is transmitted When the performance is good, this method helps the terminal device to accurately determine the SRS resource with strong transmission performance used for uplink transmission.

In an optional design, the second subsection may include one or more bits, and a combination of the values of each bit in the one or more bits constitutes a bit state of the second subsection, and the configuration information It is also used to indicate the bit status of the second sub-part corresponding to the number of SRS resources selected from the second SRS resource subset. In this case, the terminal device determines the second target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field, including: A number of SRS resources corresponding to the bit states are selected from the two SRS resource subsets as the second target SRS resources. Through this design, the terminal device can determine the SRS resources called in the second SRS resource subset according to the bit state of the second sub-part in the SRI indication field. When the transmission performance of the SRS resources in the second SRS resource subset is weak, This approach helps the terminal equipment to accurately determine the SRS resources with weak transmission performance used for uplink transmission.

In a second aspect, the present application provides an information indication method, the method is applied to a network device, and the method includes: the network device first obtains K SRS resource subsets according to N SRS resources used when the terminal device sends a sounding reference signal SRS, The first information is then sent to the terminal device, and after the terminal device determines the precoding used for PUSCH transmission according to the first information, the uplink data that the terminal device uses for PUSCH transmission is received. Wherein, each SRS resource subset of the K SRS resource subsets includes one or more SRS resources among the N SRS resources, the first information includes a sounding reference signal resource identifier SRI indication field, and the SRI indication field includes at least one sub In part, the SRI indication field enables the terminal device to determine the precoding used for the physical uplink shared channel PUSCH transmission by indicating the target sounding reference signal SRS resource, and the target SRS resource is one or more of the N SRS resources used by the terminal device to send the SRS. K and N are positive integers, and K≤N.

The above design divides the SRS resources in advance by the network equipment, and uses the changed SRI indication field to indicate the target SRS resources to the terminal equipment, as long as the division method of the N SRS resources is reasonable (for example, the number of SRS resource subsets and each SRS resource are reasonably controlled. The number of SRS resources in the subset), even if the terminal device supports more transmit antennas, resulting in a larger value of N, the number of bits in the SRI indication field sent by the network device can be compressed to less than N. Compared with the way of directly using N bits to indicate N SRS resources, this way of grouping indication helps to solve the technical problem that the SRI indication field of the network device is too large when the terminal device supports more transmit antennas. The data amount of the DCI carrying the SRI indication field can also be correspondingly reduced, and the reliability of the DCI transmission can be improved.

In an optional design, before sending the first information to the terminal device, the network device also obtains K SRS resource subsets according to the N SRS resources, and sends configuration information to the terminal device, where the configuration information is used to indicate the K SRS resource subsets SRS resources included in each SRS resource subset of the SRS resource subset. In this way, the K SRS resource subsets of the terminal device are configured in advance by the network device and notified to the terminal device, which helps the network device and the terminal device to perform non-codebook-based transmission operations based on the unified configuration subsequently, and improves the SRI performance of the network device. The convenience of indicating the target SRS resource in the indication field.

In an optional design, when K is greater than or equal to 2, at least one subsection includes a first subsection and a second subsection, and the first subsection is used by the terminal device to determine the target SRS from the K SRS resource subsets Resource subset, the second subsection is used by the terminal device to determine the target SRS resource from the target SRS resource subset. In this way, by dividing the SRI indication field into a two-level indication structure, the two-level indication structure can be used to accurately indicate the target SRS resource from the K SRS resource subsets. This indication method corresponds to the method of dividing the SRS resources, which helps In the case of dividing SRS resources, it is ensured that the terminal device normally transmits uplink data to the network device.

In an optional design, the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same. In this case, the value of K and the number of SRS resources included in each SRS resource subset can also be configured or pre-defined through high-level signaling. In this way, the terminal device can calculate the first number of bits and the first number of bits according to the information. The two-bit number is helpful for the terminal device to obtain the first subsection according to the first bit number and obtain the second subsection according to the second bit number after receiving the SRI indication field. In this way, the first bit number and the second bit number are calculated by the terminal device itself, instead of being calculated and transmitted by the network device, which can reduce the signaling overhead of transmission by the network device and the terminal device.

In an optional design, the first number of bits and the second number of bits may also be configured or predefined through high-level signaling, where the first number of bits is used by the terminal device to determine the number of bits from the SRI indication field. A subsection, the second bit number is used for the terminal device to determine the second subsection from the SRI indication field. In this way, the first bit number and the second bit number corresponding to the terminal device are configured by high-level signaling or pre-defined, so that the relevant parameters used in the uplink transmission of the terminal device are managed in a unified manner, thereby more conforming to the standard process.

In an optional design, when K is 1, then: the number of bits in the SRI indication field is L, and a combination of the values of each bit in the L bits constitutes a bit state of the L bits, L is a positive integer less than N. In this case, the network device obtains K SRS resource subsets according to the N SRS resources, including: the network device selects L SRS resources from the N SRS resources to form an SRS resource subset; one of the L SRS resources or Multiple SRS resources correspond to a bit state of L bits, and the bit state of L bits in the SRI indication field is used by the terminal device to determine the target SRS resource from the L SRS resources. In this way, one SRS resource subset is formed by selecting L SRS resources from N SRS resources, so that the network device only needs to select the target SRS resource from the L SRS resources, so the number of bits corresponding to the SRI indication field only needs to be It is only necessary to indicate the combined state of the L SRS resources, instead of indicating all the combined states of the N SRS resources, in this way, the number of bits of the SRI indication field can be reduced.

In an optional design, when K is 2, the configuration information is used to indicate M, and M is used by the terminal equipment to divide the N SRS resources into the first SRS resource subset and the second SRS resource subset, and the first One SRS resource subset includes M SRS resources among the N SRS resources, and the second SRS resource subset includes NM SRS resources other than the M SRS resources among the N SRS resources, where M is a positive integer less than N. In this case, at least one subsection may include a first subsection and a second subsection, the first subsection is used by the terminal device to determine the first target SRS resource from the first SRS resource subset, and the second subsection is used for The terminal device determines the second target SRS resource from the second SRS resource subset, and the first target SRS resource and the second target SRS resource constitute the target SRS resource. In this way, the network device notifies the terminal device of M, so that the terminal device can obtain 2 SRS resource subsets by dividing according to M in advance, which helps to accurately determine the target SRS resource from the 2 SRS resource subsets when the SRI indication field is subsequently received. . Moreover, this indication method enables the network device to select part of the SRS resources from the two SRS resource subsets respectively to form the target SRS resource, instead of only selecting all the target SRS resources from one SRS resource subset, thereby helping Improve the balance of network equipment selecting SRS resources.

In an optional design, the length of the first sub-part is M bits, and each bit in the M bits corresponds to one SRS resource in the M SRS resources, when the value of the first bit in the M bits is the th When the value is one, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for PUSCH transmission, and the first bit is any one of the M bits. In this case, the bit state of the M bits is used by the terminal device to use the SRS resource corresponding to the bit value of the first value in the first subsection as the first target SRS resource. Through this design, the first subsection can indicate whether each SRS resource in the first SRS resource subset is invoked. When the transmission performance of the SRS resources in the first SRS resource subset is good, this method is helpful for the terminal The device accurately determines the SRS resources with strong transmission performance used for uplink transmission.

In an optional design, the second subsection includes one or more bits, and a combination of values of each bit in the one or more bits constitutes a bit state of the second subsection. In this case, the configuration information is also used to indicate the bit status of the second subsection corresponding to the number of SRS resources selected from the second SRS resource subset; the bit status of the second subsection of the SRI indication field is used for The second target SRS resource is selected from the two SRS resource subsets. Through this design, the bit state of the second sub-part can be used to determine the SRS resources called in the second SRS resource subset, which is helpful when the transmission performance of the SRS resources in the second SRS resource subset is weak. The terminal equipment accurately determines the SRS resources with weak transmission performance used for uplink transmission.

In a third aspect, the present application provides an information indicating device, the device may be a terminal device, and the device includes:

The transceiver unit is configured to receive first information sent by the network device, where the first information may include a sounding reference signal resource identifier SRI indication field. The SRI indication field may include at least one sub-section, and the SRI indication field enables the terminal device to determine the precoding used for the physical uplink shared channel PUSCH transmission by indicating the target sounding reference signal SRS resource. The target SRS resource indicated by the SRI indication field can be one or more of the N SRS resources used by the terminal device when sending SRS, and the N SRS resources are used to obtain K SRS resource subsets. Each SRS resource subset may include one or more SRS resources among the N SRS resources. Among them, K and N are positive integers, and K≤N;

The processing unit is configured to determine the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI indication field, and use the target SRS resource to determine the precoding used by the terminal equipment for PUSCH transmission.

In a possible design, before receiving the first information sent by the network device, the transceiver unit further receives configuration information sent by the network device, where the configuration information is used to indicate the information contained in each SRS resource subset of the K SRS resource subsets SRS resources.

In a possible design, when K is greater than or equal to 2, at least one subsection includes a first subsection and a second subsection, and the first subsection is used to indicate one SRS resource subset in the K SRS resource subsets , and the second sub-part is used to indicate one or more SRS resources in a subset of SRS resources. In this case, the processing unit may first determine the target SRS resource subset from the K SRS resource subsets according to the first sub-part of the SRI indication field, and then determine the target SRS resource subset from the target SRS resource subset according to the second sub-section of the SRI indication field Determine the target SRS resource.

In a possible design, the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same, and the value of K may be configured or predefined by high-level signaling. In this case, after the transceiver unit receives the configuration information sent by the network device, the processing unit may also determine the first number of bits according to the value of K, and determine the first number of bits according to the number of SRS resources included in each SRS resource subset. Two bits. Wherein, the first number of bits is used to determine the first subsection from the SRI indication field, the second number of bits is used to determine the second subsection from the SRI indication field, the first number of bits and the second number of bits are The sum of the numbers is equal to the number of bits in the SRI indication field.

In a possible design, the processing unit may also be configured by high-level signaling or predefine the first number of bits and the second number of bits, where the first number of bits is used to determine the first number of bits from the SRI indication field Subpart, the second number of bits is used to determine the second subpart from the SRI indication field.

In a possible design, when K is 1, the SRS resource subset can include L SRS resources among the N SRS resources, L is a positive integer less than N, the number of bits of the SRI indication field is L, and L A combination of values of each of the bits constitutes a bit state of the L bits, and one or more SRS resources in the L SRS resources corresponds to a bit state of the L bits. In this case, the processing unit may determine the target SRS resource from the L SRS resources according to the bit state of the L bits of the SRI indication field.

In a possible design, when K is 2, the K SRS resource subsets may include a first SRS resource subset and a second SRS resource subset, and the first SRS resource subset includes M of the N SRS resources The second SRS resource subset includes NM SRS resources other than the M SRS resources among the N SRS resources, where M is a positive integer smaller than N. Correspondingly, at least one subsection may include a first subsection and a second subsection, the first subsection is used to indicate one or more SRS resources in the first SRS resource subset, and the second subsection is used to indicate the second SRS One or more SRS resources in a subset of resources. In this case, the processing unit may determine the first target SRS resource from the first SRS resource subset according to the first sub-part of the SRI indication field, and determine the first target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field A second target SRS resource is determined, and then the first target SRS resource and the second target SRS resource are used as one or more target SRS resources.

In one possible design, configuration information may be used to indicate M. In this case, after the transceiver unit receives the configuration information sent by the network device, the processing unit may further divide the N SRS resources into the first SRS resource subset and the second SRS resource subset according to M.

In a possible design, the length of the first sub-part is M bits, and each bit in the M bits may correspond to one SRS resource in the M SRS resources, when the value of the first bit in the M bits is the first When the value is one, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for PUSCH transmission, where the first bit can be any one of the M bits. In this case, the processing unit may use the SRS resource corresponding to the bit whose value is the first value in the first subsection as the first target SRS resource.

In a possible design, the second subsection may include one or more bits, and a combination of the values of each of the one or more bits constitutes a bit state of the second subsection. Correspondingly, the configuration information may further indicate the bit status of the second sub-part corresponding to the number of SRS resources selected from the second SRS resource sub-set. In this case, the processing unit may select the number of SRS resources corresponding to the bit states from the second SRS resource subset as the second target SRS resources according to the bit states of the second sub-part of the SRI indication field.

In a fourth aspect, the present application provides an information indicating device, the device may be a network device, and the device includes:

The processing unit is configured to obtain K SRS resource subsets according to the N SRS resources used when the terminal equipment sends the sounding reference signal SRS. Wherein, each SRS resource subset of the K SRS resource subsets may include one or more SRS resources among the N SRS resources, where K and N are positive integers, and K≤N;

The transceiver unit is configured to send the first information to the terminal device, and receive the uplink data that the terminal device uses for PUSCH transmission using precoding. The first information may include a sounding reference signal resource identifier SRI indication field, the SRI indication field may include at least one sub-section, and the SRI indication field may indicate the target SRS resource to enable the terminal device to determine the physical uplink shared channel PUSCH transmission. For precoding, the target SRS resource may be one or more of N SRS resources.

In a possible design, before sending the first information to the terminal device, the transceiver unit may also send configuration information to the terminal device, where the configuration information is used to indicate the SRS resources included in each SRS resource subset of the K SRS resource subsets .

In a possible design, when K is greater than or equal to 2, at least one subsection may include a first subsection and a second subsection, and the first subsection is used by the terminal device to determine the target SRS from the K SRS resource subsets Resource subset, the second subsection is used by the terminal device to determine the target SRS resource from the target SRS resource subset.

In a possible design, the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same. In this case, the processing unit may also configure or pre-define the value of K through high-level signaling, so that the terminal device can determine the first number of bits according to the value of K, and according to the SRS included in each SRS resource subset The number of resources determines the second number of bits, the first number of bits is used by the terminal device to determine the first subsection from the SRI indication field, and the second number of bits is used by the terminal device to determine the second subsection from the SRI indication field. part.

In a possible design, the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same. In this case, the processing unit may also configure or predefine the first bit number and the second bit number through high-level signaling, and the first bit number is used by the terminal device to determine the first subsection from the SRI indication field, The second number of bits is used by the terminal device to determine the second subsection from the SRI indication field.

In a possible design, when K is 1, the number of bits in the SRI indication field can be L, where L is a positive integer less than N, and a combination of the values of each of the L bits can constitute L A bit state of a bit. In this case, the processing unit may select L SRS resources from the N SRS resources to form a subset of SRS resources, and one or more SRS resources in the L SRS resources may correspond to a bit state of L bits, so that , the bit status of the L bits of the SRI indication field can be used by the terminal device to determine the target SRS resource from the L SRS resources.

In a possible design, when K is 2, the configuration information can be used to indicate M, where M is used by the terminal equipment to divide N SRS resources into the first SRS resource subset and the second SRS resource subset, the first The SRS resource subset includes M SRS resources among the N SRS resources, and the second SRS resource subset includes NM SRS resources other than the M SRS resources among the N SRS resources, where M is a positive integer less than N. In this case, at least one subsection may include a first subsection and a second subsection, the first subsection is used by the terminal device to determine the first target SRS resource from the first SRS resource subset, and the second subsection is used for The terminal device determines the second target SRS resource from the second SRS resource subset, and the first target SRS resource and the second target SRS resource constitute the target SRS resource.

In a possible design, the length of the first subsection may be M bits, and each bit in the M bits may correspond to one SRS resource in the M SRS resources, when the value of the first bit in the M bits is When the value is the first, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for PUSCH transmission, and the first bit is any one of the M bits. In this case, the bit state of the M bits may be used by the terminal device to use the SRS resource corresponding to the bit value of the first value in the first subsection as the first target SRS resource.

In a possible design, the second subsection may include one or more bits, and a combination of the values of each of the one or more bits constitutes a bit state of the second subsection. In this case, the configuration information is also used to indicate the bit state of the second sub-part corresponding to the number of SRS resources selected from the second SRS resource subset, and the bit state of the second sub-part of the SRI indication field is used for the terminal device to select from the first sub-part. The second target SRS resource is selected from the two SRS resource subsets.

In a fifth aspect, the present application provides an information indicating device, which may include a processor and a communication interface, wherein the communication interface may be used to receive and transmit signals from other communication devices other than the information indicating device of the third aspect. To the processor or to send the signal from the processor to other communication devices than the information indicating device of the third aspect, the processor can implement the method according to any one of the first aspect through logic circuits or executing code instructions.

In a sixth aspect, the present application provides an information indicating device, which may include a processor and a communication interface, wherein the communication interface is configured to receive signals from other communication devices other than the information indicating device in the fourth aspect and transmit to the information indicating device. The processor may send signals from the processor to other communication devices than the information indicating device of the fourth aspect, and the processor may implement the method according to any one of the second aspect through logic circuits or executing code instructions.

In a seventh aspect, the present application provides an information indicating device, the device may include a processor, the processor is connected to a memory, the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the device executes the above-mentioned The method of any one of the first aspects.

In an eighth aspect, the present application provides an information indicating device, the device may include a processor, the processor is connected to a memory, the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the device executes as above The method of any one of the second aspect.

In a ninth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of the foregoing first aspects is implemented.

In a tenth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of the foregoing second aspects is implemented.

In an eleventh aspect, the present application provides a chip, which may include a processor and an interface, where the processor is configured to read an instruction through the interface to execute the information indication method according to any one of the above-mentioned first aspect.

In a twelfth aspect, the present application provides a chip, which may include a processor and an interface, where the processor is configured to read an instruction through the interface to execute the information indicating method according to any one of the second aspect above.

In a thirteenth aspect, the present application provides a computer program product, which is used to store a computer program, and when the computer program runs on a computer, causes the computer to execute the method described in any of the above-mentioned first aspect , or perform any method described in the second aspect above.

In a fourteenth aspect, the present application provides a system, the system may include a terminal device and a network device, wherein the terminal device may be used to execute the first aspect or any one of the methods in the first aspect, and the network device may be used to Perform any method of the second aspect or the second aspect above.

For the beneficial effects of the third aspect to the fourteenth aspect, please refer to the technical effects that can be achieved by the corresponding designs in the first aspect and the second aspect, which will not be repeated here.

Description of drawings

FIG. 1 exemplarily shows a schematic diagram of a system architecture of a communication system to which an embodiment of the present application is applicable;

2 exemplarily shows a schematic diagram of a non-codebook-based uplink transmission scenario;

Fig. 3 exemplarily shows a non-codebook-based uplink transmission sequence diagram;

FIG. 4 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 1 of the present application;

FIG. 5 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 2 of the present application;

FIG. 6 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 3 of the present application;

FIG. 7 exemplarily shows a schematic structural diagram of an information indicating device provided by an embodiment of the present application;

FIG. 8 exemplarily shows a schematic structural diagram of another information indicating device provided by an embodiment of the present application;

FIG. 9 exemplarily shows a schematic structural diagram of another information indicating apparatus provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

FIG. 1 exemplarily shows a schematic diagram of a system architecture of a communication system 100 to which the embodiments of the present application are applied. The system architecture shown in FIG. 1 includes a network device 110 and at least one terminal device, such as terminal device 101 , terminal device 102 , terminal device 103 , terminal device 104 , terminal device 105 , and terminal device 106 . It should be understood that the embodiments of the present application do not limit the number of network devices and the number of terminal devices in the system architecture, and the system architecture to which the embodiments of the present application are applicable may include, in addition to network devices and terminal devices, other devices, such as Core network equipment, wireless relay equipment, wireless backhaul equipment, etc., are also not limited in this embodiment of the present application. Moreover, the network device in the embodiment of the present application may integrate all functions in an independent physical device, or may distribute the functions on multiple independent physical devices, which is not limited by the embodiment of the present application. In addition, the terminal device in the embodiment of the present application may be connected to the network device in a wireless manner.

It can be understood that the terminal device 105, the terminal device 104 and the terminal device 106 shown in FIG. 1 may also constitute a communication system. When the information indication method is applied to the communication system, the terminal device 105 is equivalent to a network device and can implement the operations performed by the network device in the embodiments of the present application. The terminal device 104 and the terminal device 106 are equivalent to terminal devices and can implement the implementation of the present application. The operation performed by the terminal device in the example.

The communication system in this embodiment of the present application may refer to various communication systems, such as: 5G (or called new radio (NR)) communication system, 6G communication system, long term evolution (long term evolution, LTE for short) system, Global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service ( general packet radio service (GPRS) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS) ), worldwide interoperability for microwave access (WiMAX for short) communication system, etc., of course, it can also be a communication system in other unlicensed frequency bands, which is not limited.

The terms and related technologies involved in the embodiments of the present application are first introduced below.

1. Terminal equipment.

The terminal device in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal equipment may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber) station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc. For example, these may include mobile telephones (or "cellular" telephones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, computer-embedded mobile devices, and the like. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants), PDA), etc. Also includes constrained devices, such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), and laser scanners.

2, network equipment.

The network devices in the embodiments of the present application may include multiple types, for example, including access network (access network, AN) devices, such as base stations (eg, access points), which may refer to the access network through an air interface through one or more A device that communicates with a wireless terminal device in a cell. The base station may be used to convert received air frames to and from Internet Protocol (IP) packets and act as a router between the terminal device and the rest of the access network, which may include the IP network. For example, it includes a road side unit (road side unit, RSB). The RSB may be a fixed infrastructure entity supporting V2X applications, and may exchange messages with other entities supporting V2X applications. The network device can also coordinate the attribute management of the air interface. For example, the network equipment may include an LTE system or an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in long term evolution-advanced (LTE-A), or may also include fifth generation mobile The next generation node B ( ^gNB ) in the new radio (NR) system of the communication technology (the 5th generation, 5G) may also include the cloud radio access network (Cloud RAN) A centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in the system are not limited in the embodiments of the present application.

3. MIMO technology and precoding.

In theory, MIMO technology can exponentially increase system capacity through spatial multiplexing of multiple antennas, but this is not the case in practice. For example, the capacity of the 2*2MIMO system is actually the capacity of the SISO system that is less than twice the theoretical system capacity of the 2*2MIMO, that is, the capacity of the 2SISO system. This is caused by the corresponding increase in the inter-channel influence as the system capacity increases, and the inter-channel influence is mainly caused by the correlation of the channels in the channel matrix. Therefore, when evaluating the channel matrix at the receiving end, it is also necessary to perform an operation to eliminate the influence between channels. However, in order to maximize the capacity of a MIMO system, the receiving end needs to process and evaluate each channel in a balanced manner. For example, for a SISO system, the receiving end only needs to process and evaluate one channel in a balanced manner, while for a 2*2MIMO system, The receiving end needs to process and evaluate 4 channels in a balanced manner. Obviously, this method not only increases the difficulty of signal processing by the receiver, but also increases the system overhead because the receiver needs to feed back evaluation results of multiple channel correlations to the transmitter.

In order to solve the above problems, precoding (Precoding) came into being. The purpose of precoding is to maximize the capacity of the MIMO system, reduce the difficulty of signal processing at the receiving end, and reduce system overhead. Precoding uses the channel state at the transmitter to dynamically control the power and phase of the signal. By changing the distribution of signal energy in space, the energy of some specific locations becomes stronger, and the signal transmission performance and system capacity of the transmitter at that location are improved. , so that the receiver can receive the "pure" signal sent by the transmitter without interference from other transmitters. Moreover, in this way, the transmitting end performs preprocessing first and then sends it to the receiving end, so that the receiving end does not need to perform the above-mentioned complex process of equalizing processing to evaluate each channel, and does not need to feed back the evaluation results of multiple channel correlations to the transmitting end. Therefore, the difficulty and system overhead of signal processing at the receiving end can also be reduced.

4. Uplink transmission based on non-codebook.

In the NR system, according to different precoding methods, uplink transmission can be mainly divided into two types: CB transmission and NCB transmission. The precoding used by the terminal equipment in the CB transmission is notified to the terminal equipment by the network equipment through the codebook, while the precoding used in the NCB transmission is calculated by the terminal equipment itself.

The solution in this application is mainly applied to NCB transmission. The specific implementation process of NCB transmission is first introduced below.

FIG. 2 exemplarily shows a schematic diagram of a scenario of NCB transmission, and FIG. 3 exemplarily shows a timing sequence diagram of NCB transmission. Referring to FIG. 2 and FIG. 3 , the non-codebook-based uplink transmission process includes:

Step 301, the network device configures N SRS resources based on NCB transmission for the terminal device.

In an optional implementation manner, the network device may configure one or more SRS resource sets for the terminal device, and the one or more SRS resource sets include but are not limited to: a beam management set, a codebook set, a non-codebook set, and Antenna switching set. Wherein, each SRS resource set may include at least one SRS resource, and the number of SRS resources included in each SRS resource set may be determined according to the capability of the terminal device. For example, when the number of antennas supported by the terminal device is more, each The number of SRS resources included in the SRS resource set may be larger. In this embodiment of the present application, the SRS resources in each SRS resource set may correspond to different purposes, for example, the SRS resources in the beam management set are used to perform uplink beam training, and the SRS resources in the codebook set are used to perform codebook-based channel The state information acquisition and the SRS resources in the non-codebook set are used to perform non-codebook-based channel state information acquisition, and the SRS resources in the antenna switching set are used to perform the antenna switching function.

The information indication method in this application is applicable to each SRS resource in the non-codebook set. Therefore, for the convenience of description, the SRS resources in the non-codebook set are directly referred to as SRS resources in the following embodiments of the present application. That is to say, "SRS resources" appearing in the following can be replaced with "SRS resources in the non-codebook set".

In the embodiment of the present application, the network device configures N SRS resources for the terminal device, which may specifically refer to that the network device configures the terminal device with N uplink resources for transmitting SRS, such as time domain resources and frequency domain resources. Wherein, N can be any positive integer less than or equal to the number of transmit antennas of the terminal device. Moreover, the naming of the N SRS resources can be set by those skilled in the art according to experience, for example, a currently most commonly used naming manner is: naming the N SRS resources as SRS 0 to SRS N-1.

Step 302, the network device sends a downlink reference signal (downlink-reference signal, DL-RS) to the terminal device.

In this embodiment of the present application, the DL-RS may refer to a cell-specific reference signal or a channel state information reference signal (channel state information, CSI-RS). These DL-RSs are transmitted in the entire frequency band and are independent of resource blocks (RBs) allocated to terminal devices, and can be used for CSI measurement.

Step 303, the terminal device performs downlink channel measurement on the received DL-RS to obtain the CSI of the downlink channel.

In the embodiment of the present application, the terminal device may estimate the channel state information between the transmit antenna of the network device and the receive antenna of the terminal device according to the DL-RS, so as to calculate the relevant parameters of the downlink channel. The relevant parameters may include, but are not limited to, channel quality indication (channel quality information, CQI), reference signal reception power (reference signal reception power, RSRP), channel state information (channel state information, CSI), and the like.

Step 304, the terminal device calculates the beams (beams) used for N uplink transmissions according to the CSI of the downlink channel.

In the embodiment of the present application, the CSI of the downlink channel and the CSI of the uplink channel usually contain a large amount of the same or similar information. For example, when the network device and the terminal device work in a time-duplexing division (TDD) mode, the receiving antenna of the uplink channel may correspond to the transmitting antenna of the downlink channel, and the transmitting antenna of the uplink channel may correspond to the receiving antenna of the downlink channel The antenna, the uplink channel and the downlink channel are located at the same frequency, and there is reciprocity between the uplink channel and the downlink channel. In this case, the channel elements in the covariance matrix of the uplink channel are equivalent to the channel elements in the covariance matrix of the downlink channel, except that these channel elements are respectively arranged in the covariance matrix of the uplink channel and the covariance matrix of the downlink channel according to the corresponding relationship of the antenna. In the covariance matrix, the two covariance matrices exhibit a transposed relationship.

According to the above content, after measuring and obtaining the CSI of the downlink channel, the terminal device can first determine the covariance matrix of the downlink channel from the CSI of the downlink channel, and then accurately obtain the covariance matrix of the uplink channel according to the above-mentioned transposition relationship. Further, the terminal device can perform singular value decomposition on the covariance matrix of the uplink channel according to the following formula (1.1):

H _U =UΛV ^H ... (1.1)

Among them, each parameter in formula (1.1) corresponds to:

H _U is the covariance matrix of the uplink channel;

U and V are unitary matrices, and the first N columns of V correspond to the beams used by N uplink transmissions;

Λ is a generalized diagonal matrix, each diagonal element of Λ is a positive value, and each diagonal element is arranged in order from large to small. For example, the diagonal elements of the rth row and the rth column of Λ are larger than the diagonal elements of the r+1th row and the r+1th column, and r is a positive integer greater than 0.

In the embodiment of the present application, the first N diagonal elements of Λ correspond to the first N columns of V, that is, N beams, and the N beams are named after the resources occupied during transmission. For example, when the N SRS resources are named as When SRS 0～SRS N-1, the N beams are named beam 0～beam N-1 correspondingly. According to the assumption of single user equipment (SU), when the diagonal element of Λ is larger, it means that the terminal equipment has better transmission performance using the beam corresponding to the diagonal element under the premise of no interference. In this case, since the first N diagonal elements of Λ gradually decrease, the transmission performance of the N beams corresponding to the first N diagonal elements also gradually deteriorates. It can be seen from this that although the standard is not clearly specified, generally speaking, the transmission performance of beam 0 corresponding to SRS 0 is the strongest, and the transmission performance of beam 1 corresponding to SRS 1 is second, ..., SRS N- The beam N-1 corresponding to 1 has the weakest transmission performance.

Step 305, the terminal device precodes the SRS using N beams, and sends the precoded SRS to the network device.

In this embodiment of the present application, although theoretically the transmission properties of beams beam 0 to beam N-1 gradually decrease, the network device may schedule multiple terminal devices on the same time-frequency resource, resulting in possible collisions between beams ( That is, the signal transmitted according to the beam may be interfered by other transmitted signals). However, the terminal device does not know the real collision situation between the beams, so it cannot determine which beam or beams in beam 0 to beam N-1 are the best, and thus cannot determine which SRS resources it wants to call. . Therefore, the terminal device also needs to use N beams to precode the SRS before sending it to the network device, wait for receiving an instruction sent by the network device, and determine the precoding used for subsequent uplink data transmission according to the instruction.

In the embodiment of the present application, when the terminal device supports multiple transmit antennas, the terminal device can transmit one-stream or multi-stream data at the same time, and this stream or multi-stream data is obtained by dividing the data to be transmitted (for example, SRS), and each stream of data corresponds to one Beam, the beam corresponding to each stream of data is used to weight the stream data (called beamforming or beamforming, beamforming), and one or more beams corresponding to one stream or multiple streams of data constitute the precoding for this transmission. For example, assuming that the SRS is divided into two streams of data x0 and x1, the precoding for this transmission is shown in the following formula (1.2):

Then the three rows of data [1, 1], [0, 1] and [1, 0] in the precoding represent the three transmit antennas of the terminal device respectively, and the two columns of data [1, 0, 1] ^T and [1] , 1, 0] ^T represent 2 beams respectively. Among them, the first beam [1, 0, 1] ^T is used to instruct the terminal device to send the first stream data x0 of SRS through the first transmit antenna and the third transmit antenna, and the second beam [1, 1, 0] ^T is used to instruct the terminal device to send the second stream data x1 of the SRS through the first transmit antenna and the second transmit antenna.

In the embodiment of the present application, when using N beams to precode SRS, for each beam, the terminal device may first use the beam to weight the corresponding data stream, and then send the weighted data stream according to the SRS resource corresponding to the beam. to network equipment. Compared with single-stream transmission, multi-stream transmission can increase the data volume of one uplink transmission, and improve the spectral efficiency and peak rate of uplink transmission.

Step 306, the network equipment performs channel estimation according to the precoded SRS, and calculates the uplink transmission rate when the terminal equipment uses each SRS resource, and determines the target according to the channel estimation result and the uplink transmission rates corresponding to the N SRS resources respectively. SRS resources.

It should be noted that the information used by the network device to determine one or more target SRS resources may include but not limited to channel estimation results and uplink transmission rates.

In an optional implementation manner, the network device may first exclude the beams that may collide from the N beams of the current terminal device according to the beams corresponding to the SRS resources used by other terminal devices for uplink transmission, and then One or more beams with a better uplink transmission rate are selected from the beams without collision, and one or more SRS resources corresponding to the one or more beams are used as the target SRS resources. In this way, the possibility of beam collision between the subsequent uplink transmission of the terminal device and the uplink transmission of other terminal devices is less, which helps to improve the quality of signal transmission. Moreover, the terminal device can also transmit uplink data at a higher transmission rate, thereby helping to improve the efficiency of uplink transmission.

Step 307, the network device sends downlink control information (DCI) to the terminal device, the DCI carries an SRI indication field, and the SRI indication field is used to indicate the target SRS resource.

According to the existing design logic, each combination of N SRS resources may correspond to a bit state of the SRI indication field. For example, when N is 2 and the N SRS resources are SRS 0 and SRS 1, the SRI indication field can include 2 bits, and the bit states of these 2 bits are arranged in sequence according to the combination of the 2 SRS resources, as shown in the following table 1 shows:

SRI指示域的比特状态The bit status of the SRI indication field	SRS资源的组合Combination of SRS resources
0000	SRS 0SRS 0
0101	SRS 1 SRS 1
1010	SRS 0和SRS 1SRS 0 and SRS 1

Table 1

In Table 1, the SRI indication field indicates that 1 SRS resource can include 2 cases, namely SRS 0 or SRS 1, and the SRI indication field indicates that 2 SRS resources can include 1 case, namely SRS 0 and SRS 1, these 3 kinds The cases correspond to bit states 00, 01, and 10 in turn.

According to the existing design logic, when the terminal device has N SRS resources, the number of bits occupied by the SRI indication field can be determined according to the following formula (1.3):

Among them, each parameter in formula (1.3) is:

L _max is the maximum number of scheduling layers, which is used to limit the maximum number of data streams that the terminal device can transmit at the same time. The value of L _max can be configured by the network device to the terminal device through high-layer signaling or predefined, and generally does not exceed N, which can be specifically determined according to the processing capability of the hardware device of the terminal device. Considering that the current hardware processing capability of the terminal device can only support data transmission of 4 streams or less, the following embodiments of the present application all take the terminal device transmitting data of 4 streams at most as an example for introduction.

Refers to the number of possible combinations of i SRS resources selected from N SRS resources;

To round up the sign, used to get the smallest integer not less than the median value of the sign.

In the embodiment of the present application, formula (1.3) is used to add up the number of possible combinations of SRS resources that are not more than min{L _max ,N} selected from N SRS resources, and make the bits occupied by the SRI indication field The number of bits is the minimum value of the bit state greater than or equal to the sum. In this case, the SRI indication field can indicate any situation in which the terminal equipment uses no more than N SRS resources for uplink transmission.

Step 308, the terminal equipment precodes uplink data using the beam corresponding to the target SRS resource indicated by the SRI indication field.

Step 309, the terminal device sends the precoded uplink data to the network device.

In the embodiment of the present application, when the SRI indication field only indicates one target SRS resource, the terminal device may directly use the beam corresponding to the target SRS resource to precode uplink data. When the SRI indication field indicates two or more target SRS resources, the terminal device can first divide the uplink data into sub-data of two or more streams, and then use the two or more target SRS resources respectively The sub-data of two streams or more are weighted, and finally the weighted sub-data of each stream is sent out according to the corresponding target SRS resource.

In order to ensure that the uplink transmission capability of the terminal equipment is not limited, the metropolis configures L _max =N=the number of transmit antennas. In this case, according to formula (1.3), the number of bits occupied by the SRI indication field is also exactly equal to the number of transmit antennas. At this stage, the terminal equipment can only support 4 or less transmit antennas, so the corresponding SRI indication field occupies at most 4 bits. However, with the gradual evolution of the 5G standard, the terminal equipment will support 8 or more transmit antennas in the future, which will lead to a corresponding increase in the number of bits occupied by the SRI indication field to 8 bits or more, thus greatly increasing The transmission burden of the DCI reduces the transmission reliability of the DCI. Therefore, the evolution of the 5G standard must solve the problem that the SRI indication field is too large for terminal equipment that supports more transmit antennas represented by 8 transmit antennas.

In order to solve the above problem, in an optional implementation, it can be configured: L _max <N=the number of transmit antennas, so, according to formula (1.3), since min{L _max ,N} is L _max (less than the transmit antenna number), so the number of bits occupied by the SRI indication field can be smaller than the number of transmit antennas. However, this implementation actually reduces the number of bits occupied by the SRI indication field at the expense of the uplink transmission capability of the terminal device. For example, when the SRI indication field corresponding to a terminal device supporting 8 transmit antennas needs to be compressed to less than 5 bits, this embodiment will configure N to be 8, and configure L _max to be less than or equal to 5. Since the terminal equipment at this stage can transmit at most 4 streams of data, when the configuration L _max is less than 4 (for example, 1), the terminal equipment can only select less than 4 SRS resources from the 8 SRS resources each time to obtain the precoding for uplink transmission , so the number of data streams divided by the uplink transmission is less than 4. This transmission method does not fully utilize the best processing capability of the terminal device, which will limit the peak rate of the terminal device’s uplink transmission, which is not conducive to the timely communication between the terminal device and the network device. sex. When the configuration L _max is greater than or equal to 4 (for example, 4), the terminal equipment will select the SRS resources corresponding to the 4 beams with the strongest transmission capability from the 8 SRS resources each time to obtain the precoding of the uplink transmission. Uplink transmission capability, but the 4 beams with the strongest transmission capability may collide with the beams of other terminal equipment, causing the uplink data transmitted by the terminal equipment to be interfered by the data sent by other terminal equipment, affecting the communication quality between the terminal equipment and the network equipment . Obviously, while improving the uplink transmission capability of the terminal device, this implementation will reduce the capability of the terminal device to avoid the beam interference of other terminal devices, and it is impossible to simultaneously improve the uplink transmission capability of the terminal device and avoid the beam interference of other terminal devices. Ability.

In another optional embodiment, it can be configured: L _max =N<the number of transmit antennas, so, according to formula (1.3), since min{L _max ,N} is N or L _max (less than the number of transmit antennas) , so the number of bits occupied by the SRI indication field may also be smaller than the number of transmit antennas. However, this method actually reduces the number of bits occupied by the SRI indication field at the expense of reducing the beams available to the terminal device. For example, when it is necessary to compress the SRI indication field corresponding to a terminal device supporting 8 transmit antennas to less than 5 bits, this embodiment will configure N and L _max to be 5. In this case, the terminal device can only provide 5 The SRS resource corresponding to the beam with better transmission performance can be selected by the network device. If the network device wants to schedule the terminal device to transmit 4-stream data, and the beam with 2 SRS resources in the 5 SRS resources exists with the signal sent by another terminal device If there is a high probability of collision, then: in order to maintain the upstream transmission capability of the terminal device, the network device can forcibly schedule 4 streams of data, which will cause at least 1 stream of data scheduled by the terminal device to collide with signals sent by other terminal devices, resulting in the terminal device being unable to avoid it. Beam interference of other terminal equipment; in order to avoid beam interference, network equipment can only schedule the remaining 3 streams of data, which will reduce the uplink transmission capability of the terminal equipment. It can be seen from this that this embodiment cannot simultaneously improve the uplink transmission capability of the terminal device and the ability to avoid beam interference of other terminal devices.

In view of this, the present application provides an information indication method, which is used to improve the uplink transmission of the terminal equipment when the terminal equipment supporting more transmit antennas represented by 8 transmit antennas faces the problem that the SRI indication field is too large. capability and the ability to avoid beam interference from other terminal equipment.

The information indicating method in this application is described below with specific embodiments.

It should be noted that, in the following description, the number N of SRS resources of the terminal device is equal to the number of transmit antennas, and the maximum number of scheduling layers L _max is set to 4. The network device may be the network device 100 in FIG. 1 , or an information indicating device capable of supporting the functions required by the network device to implement the method, and of course other information indicating devices, such as a chip or a chip system. The terminal device may be the terminal device in FIG. 1 , or an information indicating device capable of supporting the functions required by the terminal device to implement the method, and of course other information indicating devices, such as a chip or a chip system.

It should be understood that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (a) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple .

And, unless otherwise specified, ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree. For example, the first configuration information and the second configuration information are only for distinguishing different information, and do not indicate the difference in priority or importance of the two information.

Example 1

FIG. 4 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 1 of the present application, and the method may be executed by a terminal device and a network device, such as the terminal device and the network device shown in FIG. 1 . As shown in Figure 4, the method includes:

Step 401: The network device sends first information to the terminal device, where the first information includes an SRI indication field, and the SIR indication field includes at least one sub-part.

In this embodiment of the present application, the first information may be carried in the DCI.

In an optional implementation manner, the network device may determine the number of bits occupied by the SRI indication field according to the type of the terminal device. For example, if the terminal device is of a type whose number of transmit antennas is greater than or equal to 8, the number of bits in the SRI indication field is less than N. In this case, the network device can first obtain K SRS resource subsets according to the N SRS resources of the terminal device, and then modify the indication mode of the SRI indication field, so that the SRI indication field includes at least one subsection, and the At least one subsection to indicate the target SRS resource in the K subsets of SRS resources.

In this embodiment of the present application, each SRS resource subset of the K SRS resource subsets may include one or more SRS resources. The number of SRS resources included in the intersection of any two SRS resource subsets in the K SRS resource subsets may be 0, or may be a positive integer greater than 0 and less than N. The number of SRS resources included in the union of the K SRS resource subsets may be N, or may be a positive integer greater than 0 and less than N, which is not specifically limited.

Step 402, the terminal device determines the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI indication field, and uses the beam corresponding to the target SRS resource to precode the uplink data.

In this embodiment of the present application, K may be a positive integer smaller than N. E.g:

When K is 1, if N SRS resources are directly placed in the 1 SRS resource subset, the number of bits of the SRI indication field will obviously be equal to N, resulting in that the number of bits of the SRI indication field cannot meet the requirements. In this case, the network device can select SRS resources whose number is less than or equal to the maximum number of bits to be compressed from the N SRS resources, put them in the subset of SRS resources, and then use the SRI indication field of the SRS resources. at least one subsection is indicated. In this way, since the number of SRS resources in the one SRS resource subset is less than N, the number of bits of the SRI indication field can also be less than N. or,

When K is a positive integer greater than or equal to 2, the network device may divide N SRS resources into at least two SRS resource subsets, or may divide L SRS resources less than N into at least two SRS resource subsets and indicates the target SRS resource from at least two subsets of SRS resources using at least one subsection of the SRI indication field. In this way, as long as the N SRS resources are appropriately grouped, the number of bits in the SRI indication field can be compressed to less than N.

The implementation manner of dividing the SRS resources and the SRI indication field indicating the target SRS resource will be specifically described in Embodiment 2 and Embodiment 3, and will not be introduced here.

Step 403, the terminal device sends the precoded uplink data to the network device.

This embodiment of the present application uses a combination of dividing SRS resources and changing the structure of the SRI indication field to indicate the precoding used for uplink transmission, as long as the division method of the N SRS resources is reasonable (for example, the number of SRS resource subsets and each The number of SRS resources in the SRS resource subset), then even if the terminal device supports more transmit antennas, resulting in a larger value of N, the number of bits in the SRI indication field can be compressed to less than N. Compared with the way of directly using N bits to indicate N SRS resources, this way of grouping indication helps to solve the technical problem that the SRI indication field of the network device is too large when the terminal device supports more transmit antennas. The data amount of the DCI carrying the SRI indication field can also be correspondingly reduced, and the reliability of the DCI transmission can be improved.

In the following, two possible implementations of the solution in the first embodiment are respectively introduced with the second embodiment and the third embodiment.

Embodiment 2

FIG. 5 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 2 of the present application, and the method may be executed by a terminal device and a network device, such as the terminal device and the network device shown in FIG. 1 . As shown in Figure 5, the method includes:

Step 501, the network device obtains K SRS resource subsets according to the N SRS resources of the terminal device. Among them, K is a positive integer.

In an optional implementation manner, the network device may obtain K SRS resource subsets according to the transmission performance of the N SRS resources. According to the content introduced in the above step 304, when the N SRS resources are named as SRS 0 to SRS N-1, the transmission performance of the N beams beam 0 to beam N-1 corresponding to the N SRS resources gradually decreases ( For the convenience of description, it is called that the transmission performance of the N SRS resources gradually decreases). The L SRS resources with better transmission performance are divided into K SRS resource subsets. Wherein, L can be any positive integer less than or equal to N. In this embodiment, the SRS resources in each SRS resource subset may or may not be repeated, and the number of SRS resources in each SRS resource subset may be the same or different, which is not specifically limited.

In one example, when K is a positive integer greater than or equal to 2, the network device may set each SRS resource subset to include the same number of SRS resources. In this case, if the value of L is an integer multiple of K, the L SRS resources can be equally divided into K SRS resource subsets, each SRS resource subset includes L/K SRS resources, and K Duplicate SRS resources may not be included in the subset of SRS resources. If the value of L is a non-integer multiple of K, the corresponding one or more SRS resources with the best transmission performance among the L SRS resources may be repeatedly divided into at least two SRS resource subsets. For example, when the N SRS resources include SRS 0 to SRS 7, the beam transmission performance of SRS 0 is the best, the beam transmission performance of SRS 1 is second, and the beam transmission performance of SRS 7 is the worst. Seven SRS resources (SRS 0 to SRS 6) with the best transmission performance are selected from 0 to SRS 7 and divided into 2 SRS resource subsets, then the SRS resource subsets shown in Table 2 can be divided into:

SRS资源子集A subset of SRS resources	SRS资源SRS Resources
SRS资源子集1SRS resource subset 1	{SRS0、SRS1、SRS3、SRS5}{SRS0, SRS1, SRS3, SRS5}
SRS资源子集2SRS resource subset 2	{SRS0、SRS2、SRS4、SRS6}{SRS0, SRS2, SRS4, SRS6}

Table 2

According to Table 2, when the seven SRS resources of SRS 0 to SRS 6 are divided into SRS resource subset 1 and SRS resource subset 2, since 7 cannot be divisible by 2, the network device can select SRS 0 to SRS 6 from SRS 0 to SRS 6. Then select an SRS 0 with the best transmission performance as the repeatedly divided SRS resource. In this case, after the division is completed, SRS resource subset 1 and SRS resource subset 2 both include SRS 0 with the best transmission performance, and neither include SRS 7 with the worst transmission performance.

It should be noted that "obtaining K SRS resource subsets according to the transmission performance of N SRS resources" is only an optional implementation. K SRS resource subsets are obtained from the interference conditions of the N beams, where the interference conditions of the N beams can be determined a priori by the network device according to the historical communication with each terminal device. If one or some beams are likely to be interfered by signals sent by other terminal equipment, the SRS resources corresponding to this beam or these beams may not be considered, and only the SRS resources corresponding to other beams except this beam or these beams are divided. into K subsets of SRS resources. For example, when dividing SRS 0 to SRS 7, if it is determined a priori that SRS 3 and SRS 5 are likely to be interfered by signals sent by other terminal equipment, the network equipment can only detect SRS 0, SRS 1, SRS 2, and SRS 4. , SRS 6, SRS 7 are divided, when divided into 2 SRS resource subsets, for example, the first resource subset may include {SRS 0, SRS 2, SRS 6}, and the second resource subset may include {SRS 1. SRS 4, SRS 7}. When divided into 1 SRS resource subset, for example, the resource subset may include {SRS 0, SRS 1, SRS 2, SRS 4, SRS 6, SRS 7}. It can be understood that, in other optional embodiments, K SRS resource subsets can also be synthesized according to the transmission performance of the N SRS resources and the interference conditions of the N beams corresponding to the N SRS resources. When 0~SRS 7 are divided into 1 SRS resource subset, if it is judged a priori that SRS 3 and SRS 5 are likely to be interfered by signals sent by other terminal equipment, and considering that the transmission performance of SRS 7 is the worst, then the A subset of resources may include {SRS 0, SRS 1, SRS 2, SRS 4, SRS 6}.

In this embodiment of the present application, the N SRS resources are divided into several SRS resource subsets, and how many SRS resources each resource subset includes may be determined according to the number of bits that want to compress the SRI indication field. For details on how to determine the number of SRS resource subsets and the number of SRS resources in each SRS resource subset according to the number of bits compressed in the SRI indication field, reference may be made to the description in step 502, which will not be introduced here.

Step 502: The network device sends first configuration information to the terminal device, where the first configuration information is used to indicate the SRS resources in the K SRS resource subsets.

In this embodiment of the present application, the first configuration information may be carried in one or more of system information, downlink control information, media access layer information, and high-layer signaling.

In an optional implementation manner, the SRI indication field may include a first subsection and a second subsection, and the first configuration information may also be used to indicate the length of the first subsection in the SRI indication field (ie, the first bit number) and/or the length of the second subsection (ie the second number of bits). The length of the first subsection refers to the number of bits occupied by the first subsection, and the first subsection is used to indicate the target SRS resource subset from the K SRS resources, so the bit state corresponding to the first subsection The number of needs to be greater than or equal to the number of SRS resource subsets (ie, K). For example, when the SRS resource subset includes SRS resource subset 1 and resource subset 2, the length of the first sub-part may be 1 bit, and when the bit status of this 1 bit is 0, it indicates SRS resource subset 1 , when the bit status of this 1 bit is 1, it indicates SRS resource subset 2. Correspondingly, the length of the second subsection refers to the number of bits occupied by the second subsection, and the second subsection is used to indicate the target SRS resource from the target SRS resource subset, so the corresponding bit status of the second subsection is The number needs to be greater than or equal to the total number of possible combinations of SRS resources in the subset of SRS resources. In the case where K is greater than or equal to 2, if each SRS resource subset includes the same number of SRS resources, the number of bit states corresponding to the second sub-part can be determined according to the number of SRS resources included in one SRS resource subset Sure.

In this embodiment, when the indication modes of the second subsections are different, the lengths of the second subsections may also be different. Two possible ways to determine the length of the second subsection are exemplified below:

In a possible manner, the second subsection indicates the target SRS resource from the target SRS resource subset in a bitmap manner. In this case, the length of the second subsection may be the same as the number of SRS resources in the target SRS resource subset. same. For example, as shown in Table 2, since both the SRS resource subset 1 and the SRS resource subset 2 include 4 SRS resources, the length of the second subsection may be configured as 4 bits. These 4 bits correspond to 4 SRS resources respectively, and the value of each bit is used to indicate whether the SRS resource corresponding to the bit is the target SRS resource. For example, when the value of a certain bit is 1, it indicates that the SRS resource corresponding to the bit is the target SRS resource, and when the value of a certain bit is 0, it indicates that the SRS resource corresponding to the bit is not the target SRS resource.

In another possible manner, the second subsection indicates the target SRS resource from the target SRS resource subset according to the combination of bit states. In this case, the length of the second subsection can be calculated according to the following formula (2.1):

Wherein, n is the length of the second subsection, and l is the number of SRS resources in the target SRS resource subset.

It can be understood that when the number of SRS resources in the K SRS resource subsets is different, 1 in the formula (2.1) may also refer to the maximum number of SRS resources included in the K SRS resource subsets. In this way, when the target SRS resource subset is When the set is any SRS resource subset in the K SRS resource subsets, the length of the second subpart can be used to indicate the target SRS resource in the target SRS resource subset, and the length of the second subpart is sufficient.

The following takes the SRS resource subset shown in Table 2 as an example to introduce the implementation of the second sub-part indicating the target SRS resource in the target SRS resource subset according to the combination of bit states. In this example, since both SRS resource subset 1 and SRS resource subset 2 include 4 SRS resources, and the 4 SRS resources have the following 15 possible combinations, the bits corresponding to the length of the second subpart The number of states is not less than 15, and the length of the second sub-part calculated according to formula (2.1) is 4 bits. In one example, the bit states of these 4 bits may be used to indicate:

0001 to 0100, indicating that there is 1 target SRS resource in the target SRS resource subset, and there are 4 possibilities. For example, when the target SRS resource subset is SRS resource subset 1, the target SRS resource can be SRS0, SRS1, SRS3 or SRS5;

0101 to 1010, indicating that there are 2 target SRS resources in the target SRS resource subset, and there are 6 possibilities. For example, when the target SRS resource subset is SRS resource subset 1, the two target SRS resources can be SRS 0 and SRS 1 , SRS 0 and SRS 3, SRS 0 and SRS 5, SRS 1 and SRS 3, SRS 1 and SRS 5, or SRS 3 and SRS 5;

1011 to 1110, indicating that there are 3 target SRS resources in the target SRS resource subset, and there are 4 possibilities. For example, when the target SRS resource subset is SRS resource subset 1, the 3 target SRS resources can be SRS 0, SRS 1 and SRS 3, SRS 0, SRS 1 and SRS5, SRS 0, SRS 3 and SRS 5, SRS 1, SRS 3 and SRS 5;

1111, indicating that there are 4 target SRS resources in the target SRS resource subset, and there is one possibility. For example, when the target SRS resource subset is SRS resource subset 1, the 4 target SRS resources can be SRS 0, SRS 1, SRS 3 and SRS 5.

According to the above example, there are 16 bit states in 4 bits, but only 15 are actually used. In this case, the remaining 1 bit state can also be used for the network device to indicate other information. Moreover, it should be noted that the above-mentioned corresponding relationship between the bit state and the SRS resource is only an exemplary description. In the specific implementation, which bit state corresponds to which SRS resources can be specifically set by the network device, and the network device can also send the set correspondence to the terminal device in the form of a dictionary, so that the subsequent terminal device can follow the SRI instructions. The domain queries the corresponding SRS resource from the dictionary.

In a special case of the above embodiment, when K is 1, there is only one SRS resource subset. In this case, the length of the first subsection in the SRI indication field may be 0, and the length of the second subsection in the SRI indication field may be 0. The length of the part may be determined according to the number of SRS resources included in the one SRS resource subset, and the determination method may refer to the above-mentioned content, and will not be repeated here.

In this embodiment of the present application, "the length of the first subsection and/or the length of the second subsection is indicated by the first configuration information" is only an optional implementation. In another optional implementation manner, the length of the first subsection and/or the length of the second subsection may also be calculated by the terminal device itself, or pre-defined by the network device and the terminal device. When the terminal device calculates the length of the first subsection and the length of the second subsection by itself, in this case, the first configuration information can also indicate the value of K (and/or the indication method of the second subsection) , so that the terminal device can obtain the length of the first subsection by calculating according to the value of K in the above manner, and calculate the length of the second subsection according to the number of SRS resources included in each SRS resource subset.

According to the above content, in this embodiment of the present application, the length of the first subsection and the length of the second subsection may be obtained in the following manner:

The length of the first subsection and the length of the second subsection are configured in the first configuration information; or,

The length of the first subsection is configured in the first configuration information, and the terminal device calculates the length of the second subsection by itself according to the number of SRS resources included in each SRS resource subset; or,

The length of the second subsection and the value of K are configured in the first configuration information, and the terminal device calculates the length of the first subsection by itself according to the value of K; or,

The value of K is configured in the first configuration information, the terminal device calculates the length of the first subsection by itself according to the value of K, and calculates the length of the second subsection according to the number of SRS resources included in each SRS resource subset. ;or,

Predefine the length of the first subsection and the length of the second subsection; or,

The length of the first subsection is predefined, and the first configuration information configures the length of the second subsection; or,

The length of the first subsection is predefined, and the terminal device calculates the length of the second subsection by itself according to the number of SRS resources included in each SRS resource subset; or,

The length of the second subsection is predefined, and the first configuration information configures the length of the first subsection; or,

The length of the second subsection is predefined, the value of K is configured in the first configuration information, and the terminal device calculates the length of the first subsection by itself according to the value of K.

It should be noted that the "value of the first configuration information configuration K" shown in the above content is only an optional implementation manner, and in other optional implementation manners, the value of K can also be determined by the network device and the End devices are predefined.

In the embodiment of the present application, when the number of SRS resources included in each SRS resource subset is the same, if the SRI indication field is to be compressed into q bits, the number K of the SRS resource subsets determines the first subset The length of the part, the number 1 of SRS resources included in each SRS resource subset determines the length of the second subpart, and the sum of the length of the first subpart and the length of the second subpart determines the length of the SRI indication field, Therefore, when both the first subsection and the second subsection are indicated according to the combination of bit states, K and l need to satisfy the following formula (2.2):

According to formula (2.2), given N, _Lmax , and q, various combinations of K and l can be solved. For example, when the terminal device has 8 transmit antennas, N can be configured to be 8. Considering that the hardware processing capability of the terminal device can only support data transmission of 4 streams or less at this stage, L _max can be configured to be 4. , since the network device determines the target SRS resource from a subset of SRS resources each time according to the above scheme, if the network device is to be able to transmit 4 streams of data at a time (that is, to determine 4 target SRS resources), it is necessary to The number 1 of SRS resources in the subset of SRS resources is greater than or equal to 4. In this case, assuming that the SRI indication field is to be compressed into 5 bits (q=5), the combination of K and l can be:

K is 1, and l is a positive integer less than or equal to 5, for example, l is 4 or l is 5. In this case, the length of the first subsection is 0 and the length of the second subsection is 4 or 5. When the configuration 1 is 5, the network device can select 5 SRS resources with low beam collision probability and better transmission performance from the 8 SRS resources to form one SRS resource subset, and subsequent network devices will only use this resource The target SRS resource is selected in the subset to determine the precoding used by the terminal equipment for uplink transmission.

K is 2, and l is a positive integer less than or equal to 4, for example, l is 4. In this case, the length of the first subsection is 1 and the length of the second subsection is 4. The network device can select 6 or 7 SRS resources with better transmission performance from the 8 SRS resources to form 2 SRS resource subsets, each SRS resource subset includes 4 SRS resources, and these 2 SRS resource subsets Duplicate SRS resources may exist in a set.

For other combinations of K and l, for example, K is 3 or 4, l is a positive integer less than or equal to 3, and K is 5 or 7, and l is a positive integer less than or equal to 2, since these combinations will make each The number of SRS resources in a subset of SRS resources is less than 4, so the network device can only select 3 or less target SRS resources at most each time, so that the terminal device can only transmit data of 3 streams or less in the future. In this way, the transmission capability of the terminal device is limited, which is not conducive to improving the communication performance of the terminal device and the network device. Therefore, these combinations are not suitable for dividing SRS resource subsets.

In this embodiment of the present application, when the number K of SRS resource subsets is equal to 1, the number of SRS resources included in the SRS resource subset is limited (for example, there are only 5), although this will make the network device selectable SRS resources However, the SRS resources in the SRS resource subset are selected in advance according to the beam collision situation and transmission performance, so it is not only beneficial for the uplink data transmitted by the subsequent terminal equipment to not be interfered by the signals of other terminal equipment as much as possible, but also to ensure Transmission efficiency of terminal equipment. In the case where the number K of SRS resource subsets is greater than or equal to 2, when the number of bits to which the SRI is compressed is the same, the greater the number K of SRS resource subsets, the greater the number of SRS resources in each SRS resource subset. The smaller the number l, the fewer SRS resources the network device can select. In this case, when there is a high probability that some SRS resources are interfered by signals sent by other terminal equipment, the network equipment can only select the target SRS resource from fewer SRS resources, resulting in the terminal equipment's uplink transmission performance not reaching the desired level. to the request. Based on this, the network device can select a combination with a smaller K and a larger l from the possible combinations of K and l each time. In this way, the union of the SRS resources in the K SRS resource subsets can be provided to the network device as much as possible. The more SRS resources are selected, the more optional the target SRS resources are. It can be seen from this that, whether the number K of SRS resource subsets is configured to be equal to 1 or greater than 1, the solution in this application can help network devices to achieve the comprehensive performance of scheduling SRS resources with better transmission performance and avoiding beam interference synchronously.

Step 503, the network device sends the DL-RS to the terminal device.

Step 504, the terminal device performs downlink channel measurement on the received DL-RS, obtains the CSI of the downlink channel, and calculates N beams used for uplink transmission according to the CSI of the downlink channel.

Step 505, the terminal device precodes the SRS using N beams, and sends the precoded SRS to the network device.

Step 506, the network equipment performs channel estimation according to the precoded SRS, and calculates the uplink transmission rate when the terminal equipment uses each SRS resource, and determines an uplink transmission rate corresponding to the channel estimation result and the N SRS resources respectively. or multiple target SRS resources.

For the specific implementation process of step 503 to step 506, reference may be made to FIG. 3, which will not be repeated here.

In this embodiment of the present application, when determining one or more target SRS resources, the network device may determine it according to the actual transmission performance and actual collision situation of N beams corresponding to the N SRS resources, so as to avoid beams with beam collisions as much as possible The corresponding SRS resources, and try to call the SRS resources corresponding to the beams with stronger transmission performance. For example, when the N SRS resources are SRS 0 to SRS 7, if there is a high probability of beam collision between the beam beam 1 corresponding to SRS 1 and the beam beam 3 corresponding to SRS 3, the network device can start from the remaining SRS 0, SRS 2, and SRS 4. , SRS 5, SRS 6, and SRS 7, select 4 SRS resources with stronger transmission performance (assuming that the terminal device supports 4-stream transmission) as the target SRS resources, namely SRS 0, SRS 2, SRS 4 and SRS 5.

Step 507, the network device determines whether one or more target SRS resources are located in the same SRS resource subset, if not, then executes step 508, and if so, executes step 509.

In the embodiment of the present application, since the second sub-part of the SRI indication field can only indicate the target SRS resource from one SRS resource subset, when each target SRS resource determined in step 506 is located in a different SRS resource subset, The network device cannot actually use the second sub-part of the SRI indication field to indicate the target SRS resource. Therefore, to indicate according to the SRI indication field in the above embodiment, it must be ensured that each target SRS resource is located in the same SRS resource subset. Based on this, after determining one or more target SRS resources, the network device also needs to determine whether the one or more target SRS resources are located in the same SRS resource subset. In the above example, since SRS 0, SRS 2 and SRS 4 of the 4 target SRS resources, SRS 0, SRS 2, SRS 4 and SRS 5 selected by the network device are located in SRS resource subset 2, and SRS 5 is located in SRS In resource subset 1, the 4 target SRS resources are not located in the same SRS resource subset.

Step 508, the network device reselects one or more target SRS resources from the K SRS resource subsets.

In an optional embodiment, when one or more target SRS resources are not located in the same SRS resource subset, the network device may select an SRS resource subset containing the most target SRS resources from the K SRS resource subsets As the target SRS resource subset, one or more target SRS resources are re-determined from the target SRS resource subset. For example, in the above example, since SRS resource subset 2 includes three target SRS resources, SRS 0, SRS 2, and SRS 4, and SRS resource subset 1 includes only one target SRS resource, SRS 5, it is possible to The SRS resource subset 2 is used as the target SRS resource subset, and SRS resources with better transmission performance can be selected from the non-target SRS resources of the target SRS resource subset 2 to supplement the target SRS resources. In this way, the re-determined 4 The target SRS resources may include SRS 0, SRS 2, SRS 4, and SRS 6.

Step 509, the network device determines the value of the first sub-part in the SRI indication field according to the target SRS resource subset where the one or more target SRS resources are located, and according to the one or more target SRS resources in the target SRS resource subset. Combining the conditions, determine the value of the second sub-part in the SRI indication field.

In the above example, the SRS resource subset where the 4 target SRS resources SRS 0, SRS 2, SRS 4 and SRS 6 are located is the SRS resource subset 2, so the value of the first sub-part in the SRI indication field may be 1. The combination of SRS 0, SRS 2, SRS 4 and SRS 6 belongs to the 15th case of SRS resource combination in SRS resource subset 2 (selecting 1 SRS resource from SRS resource subset 2 includes 4 cases, from SRS The selection of 2 SRS resources from resource subset 2 includes 6 cases, the selection of 3 SRS resources from SRS resource subset 2 includes 4 cases, and the selection of 4 SRS resources from SRS resource subset 2 includes 1 case, so The case of selecting 4 SRS resources belongs to the 15th case), so according to the introduction in step 502, it can be known that the value of the first sub-part in the SRI indication field can be 1111. It can be seen that the SRI indication field is 11111.

Step 510, the network device sends DCI to the terminal device, and the DCI carries the SRI indication field.

Step 511, the terminal device determines the target SRS resource subset from the K SRS resource subsets according to the value of the first sub-part of the SRI indication field, and determines the target SRS resource subset from the value of the second sub-part of the SRI indication field. One or more target SRS resources are determined in the subset, and uplink data is precoded using beams corresponding to the one or more target SRS resources.

In this embodiment of the present application, when the terminal device parses the DCI and determines that the SRI indication field is 11111, the terminal device may first determine the value of the first subsection from the SRI indication field according to the length of the first subsection, that is, 1, and then determine The bit state in which the value of the first sub-part is 1 corresponds to SRS resource subset 2. Further, the terminal device can determine the value of the second subsection from the SRI indication field according to the length of the second subsection, that is, 1111, and then determine the value of the second subsection from the SRS resource subset 2 to be 1111. The bit states of are corresponding to SRS0, SRS2, SRS4 and SRS6.

Step 512, the terminal device sends the precoded uplink data to the network device.

In the embodiment of the present application, during uplink transmission, the terminal device may divide the uplink data into 4 streams, and then use the beams beam0, beam2, beam4, and beam6 corresponding to SRS 0, SRS 2, SRS 4, and SRS 6 to weight these 4 streams respectively. Stream data, and send the weighted 4 streams of data to the network device respectively.

It should be noted that, steps 506 to 512 take determining the target SRS resource from at least two SRS resource subsets as an example to introduce the indication process of determining the SRI indication field. In a special case, if there is only one SRS resource subset, the network device can directly determine the SRI indication field according to the combination of one or more target SRS resources in the one SRS resource subset, and the terminal device can also directly according to the SRI indication The domain determines one or more target SRS resources from this subset of SRS resources. For example, when the 8 SRS resources of SRS 0 to SRS 7 are divided into a subset of SRS resources {SRS 0, SRS 1, SRS 2, SRS 4 and SRS 6} according to the beam collision probability and transmission performance, if the network device wants to Scheduling SRS 0, SRS 2, SRS 4 and SRS 6, the network device can configure the SRI indication field as 11101. In this case, the terminal device knows that there is only one SRS resource subset according to the length 0 of the first subpart, so the terminal device can directly determine the value of one or more target SRS resources according to the value of the second subpart 11101 The combination belongs to the 29th combination case (5 SRS resources are included in the SRS resource subset, and 1 SRS resource is selected from the SRS resource subset, including 5 cases, corresponding to 00001 to 00101; 2 SRS resources are selected from the SRS resource subset, including 10 cases, corresponding to 00110~01111; 3 SRS resources selected from the SRS resource subset include 10 cases, corresponding to 10000~11001; 4 SRS resources selected from the SRS resource subset, including 5 cases, corresponding to 11010~ 11110: Selecting 5 SRS resources from the SRS resource subset includes 1 case, corresponding to 11111), so the combination of the corresponding target SRS resources is SRS 0, SRS 2, SRS 4 and SRS 6.

In the second embodiment, the network device obtains K SRS resource subsets according to the N SRS resources, and uses the first sub-part of the SRI indication field to indicate the target SRS resource subset where the target SRS resource is located, and uses the second sub-part of the SRI indication field to indicate the target SRS resource subset. The subsections indicate target SRS resources in a subset of target SRS resources. Although this method enables the network device to select the target SRS resource from only one SRS resource subset, which reduces the flexibility of the network device to select the SRS resource, this indication method can effectively configure K SRS resource subsets. Making the sum of the number of bits in the SRI indication field less than N, compared with the way of directly using N bits to indicate N SRS resources, helps to reduce the number of bits in the SRI indication field, and correspondingly reduces the number of bits in the SRI indication field. The data volume of DCI improves the reliability of DCI transmission. Further, whether it is considering transmission performance and beam interference when dividing SRS resource subsets, or providing more optional SRS resources to network equipment by dividing fewer SRS resource subsets, it can improve network equipment scheduling. The comprehensive performance of SRS resources with high transmission performance and beam interference avoidance helps terminal equipment to transmit uplink data that is not interfered by beams of other terminal equipment with better uplink transmission capability.

[Example 3]

FIG. 6 exemplarily shows a schematic flowchart of the information indication method provided in Embodiment 3 of the present application. The method may be executed by a network device and a terminal device, such as the network device and the terminal device shown in FIG. 1 . As shown in Figure 6, the method includes:

Step 601, the network device divides the N SRS resources into a first SRS resource subset and a second SRS resource subset, wherein the first SRS resource subset includes M SRS resources among the N SRS resources, and the second SRS resource The subset includes NM SRS resources other than the M SRS resources among the N SRS resources. Among them, M is a positive integer less than N.

In an optional implementation manner, the M SRS resources included in the first SRS resource subset may be the first M SRS resources (that is, SRS 0˜SRS M ) obtained by arranging the N SRS resources in descending order of transmission performance. -1), the NM SRS resources included in the second SRS resource subset may be the last NM SRS resources (ie, SRS M～SRS N) obtained by arranging the N SRS resources from strong to weak according to the transmission performance. In this case, the transmission performance of the M SRS resources included in the first SRS resource subset is relatively strong, and the transmission performance of the N-M SRS resources included in the second SRS resource subset is relatively weak.

According to this embodiment, although the transmission performance of the SRS resources in the first SRS resource subset is the best, in order to be compatible with unexpected situations (for example, the SRS resources in the first SRS resource subset collide), the network device cannot only set The first SRS resource subset contains the strongest L _max SRS resources, but also the second SRS resource subset needs to be set. In this case, in order to make the number of bits of the SRI indication field smaller than L _max , it is necessary to configure the number M of SRS resources included in the first resource subset to be smaller than L _max . Moreover, since the network device hopes to be able to schedule more SRS resources from the first SRS resource subset, and schedule some less SRS resources from the second SRS resource subset, the SRS resources included in the first SRS resource subset are The number M can be set to a value slightly smaller than _Lmax . For example, when considering that the terminal equipment at the current stage can only support 4-stream transmission at most and set L _max to 4, if the N SRS resources are SRS 0 to SRS 7 (the transmission performance of SRS 0 to SRS 7 deteriorates in sequence), Then the network device can divide the first 3 resource subsets SRS 0, SRS 1 and SRS 2 with the strongest transmission performance into the first SRS resource subset, and divide the remaining 5 resource subsets SRS 3 to SRS 7 into the second SRS resource subset. A subset of SRS resources. In this case, the value of M is configured as 3.

Step 602: The network device sends second configuration information to the terminal device, where the second configuration information is used to indicate the length of the first sub-part and the length of the second sub-part of the SRI indication field.

In an optional implementation manner, the first sub-part of the SRI indication field may indicate the first target SRS resource in the first SRS resource subset in the form of a bitmap. In this case, the first sub-part of the SRI indication field The length of the part is the same as the number M of SRS resources in the first SRS resource subset, and each bit in the first sub-part of the SRI indication field can correspond to one SRS resource in the first SRS resource subset. When the value is 1, it indicates that the SRS resource corresponding to this bit belongs to a first target SRS resource, and when the value of this bit is 0, it indicates that the SRS resource corresponding to this bit does not belong to the first target SRS resource. Correspondingly, the length of the second subsection of the SRI can be determined according to the number of bits to which the SRI is expected to be compressed and the length of the first subsection. When the length is 3 bits, the length of the second subsection can be set to 2 bits, and each bit state of these 2 bits can correspond to a combination of the second target SRS resources. The corresponding relationship between the various bit states of the second target SRS resource and the combination of the second target SRS resource may be predefined by the network device and the terminal device, or may be indicated in the second configuration information, or may be indicated in high-level signaling, which is not specifically limited .

Table 3 exemplarily shows the correspondence between the various bit states of the second subsection and the combination of the second target SRS resources. In this example, the first M SRS resources with the strongest transmission performance among the N SRS resources ( That is, SRS 0～SRS M-1) are placed in the first SRS resource subset, and the next NM SRS resources (ie SRS M～SRS N) with weaker transmission performance among the N SRS resources are placed in the first SRS resource subset. set:

table 3

Step 603, the network device sends the DL-RS to the terminal device.

Step 604, the terminal device performs downlink channel measurement on the received DL-RS, obtains the CSI of the downlink channel, calculates N beams used for uplink transmission according to the CSI of the downlink channel, and uses the N beams to precode the SRS.

Step 605, the terminal device sends the precoded SRS to the network device.

Step 606, the network equipment performs channel estimation according to the precoded SRS, and calculates the uplink transmission rate when the terminal equipment uses each SRS resource, and determines an uplink transmission rate corresponding to the channel estimation result and the N SRS resources respectively. or multiple target SRS resources.

For the specific implementation process of step 603 to step 606, reference may be made to FIG. 3, which will not be repeated here.

In this embodiment of the present application, when determining one or more target SRS resources, the network device may determine it according to the actual transmission performance of the N beams corresponding to the N SRS resources and the actual collision situation, so as to avoid the corresponding beams with collisions as much as possible. and try to call the SRS resources corresponding to the beam with stronger transmission performance. For example, when the N SRS resources are SRS 0 to SRS 7, if the beam 1 corresponding to SRS 1 has a beam collision, the network device can select from the remaining SRS 0, SRS 2, SRS 3, SRS 4, SRS 5, SRS 6 , In SRS 7, 4 SRS resources with stronger transmission performance (assuming that the terminal device supports 4-stream transmission) are selected as the target SRS resources, namely SRS 0, SRS 2, SRS 3 and SRS 4.

Step 607, the network device determines the value of the first sub-part in the SRI indication field according to the target SRS resources included in the first resource subset, and determines the first sub-section in the SRI indication field according to the target SRS resources included in the second resource subset. The value of the second subsection.

In the above example, since the target SRS included in the first resource subset are SRS 0 and SRS 2, according to the bitmap indication method in step 602, it can be determined that the bit state of the first subsection in the SRI indication field is 101 . Since the target SRS included in the second resource subset are SRS 3 and SRS 4, according to the corresponding relationship shown in Table 3, it can be determined that the bit state of the second sub-part in the SRI indication field is 10. From this, it can be seen that the SRI indication field is 10110.

In an optional implementation manner, the target SRS resource may not exist in the first resource subset. In this case, according to the bitmap indication method in step 602, the SRI indicates each of the first subsections in the field. The value of the bit can be 0. In another optional implementation manner, the target SRS resource may not exist in the second resource subset. In this case, according to the corresponding relationship shown in Table 3, the SRI indicates each bit of the second sub-part in the field The value of the bit can also be 0.

Step 608, the network device sends DCI to the terminal device, and the DCI carries the SRI indication field.

Step 609, the terminal device determines the first target SRS resource from the first SRS resource subset according to the value of the first sub-part of the SRI indication field, and determines the first target SRS resource from the second SRS resource according to the value of the second sub-part of the SRI indication field. The second target SRS resource is determined in the resource subset, the first target SRS resource and the second target SRS resource are used as the target SRS resource, and the uplink data is precoded by using the beam corresponding to the target SRS resource.

In this embodiment of the present application, when the terminal device parses the DCI and determines that the SRI indication field is 10110, the terminal device may first determine the first subsection from the SRI indication field according to the length M of the first subsection (corresponding to 3 in this example). The bit state of , that is, 101, and then it is determined from the first resource subset that the bit state 101 of the first subpart corresponds to SRS 0 and SRS 2. Further, the terminal device can determine the bit state of the second subsection from the SRI indication field according to the length of the second subsection (corresponding to 2 in this example), that is, 10, and then according to the corresponding relationship shown in Table 3 from In the second resource subset, it is determined that the bit state 10 of the second subsection corresponds to SRS 3 and SRS 4. Therefore, the target SRS resources are SRS 0, SRS 2, SRS 3 and SRS 4.

In the embodiment of this application, "dividing the N SRS resources into a first resource subset and a second resource subset" is only a description in an abstract sense. In a specific implementation, the network device may not perform the division operation, but directly send the value of M to the terminal device. Correspondingly, the terminal device may not perform the division operation, but after receiving the SRI indication field, directly determine the first target SRS resource from the first M SRS resources with the best transmission performance according to the first sub-part of the SRI indication field. , and directly determine the second target SRS resource from the next NM SRS resources according to the second sub-part of the SRI indication field.

Step 610, the terminal device sends the precoded uplink data to the network device.

In the above example, the terminal device can first divide the uplink data into 4 streams, and then use the beams beam0, beam2, beam3 and beam4 corresponding to SRS 0, SRS 2, SRS 3 and SRS 4 respectively to weight the 4 streams of data, and respectively The weighted 4-stream data is sent to the network device.

In the third embodiment, the network device divides the N SRS resources into 2 SRS resource subsets, and uses the first sub-part and the second sub-part of the SRI indication field to respectively indicate the target SRS resources in the 2 SRS resource subsets, This method not only enables the network device to comprehensively select the target SRS resource from the two SRS resource subsets, but also makes the sum of the bits of the SRI indication field less than N when the two SRS resource subsets are reasonably configured. In the way of directly using N bits to indicate N SRS resources, it is helpful to reduce the number of bits of the SRI indication field, correspondingly reduce the data amount of the DCI carrying the SRI indication field, and improve the reliability of DCI transmission. Further, the SRS resources with strong transmission performance and the SRS resources with weak transmission performance are divided into different SRS resource subsets respectively, and SRS resources with different transmission performances are called from different SRS resource subsets respectively, so that the network device can follow the Scheduling of SRS resources based on the transmission performance of the SRS resources can not only help the network equipment to schedule as many SRS resources with strong transmission performance as possible, but also allow the network to The equipment schedules SRS resources with weak transmission performance, so that it can take into account the ability to schedule SRS resources with strong transmission performance and the ability to avoid interference from other beams, so that subsequent terminal equipment can transmit uplink transmission with better uplink transmission capability that is not interfered by the beams of other terminal equipment. data.

It should be noted that, in the third embodiment, "dividing the N SRS resources into two SRS resource subsets" is only an optional implementation. In other optional implementations, the N SRS resources may also be divided into two subsets. The resources are divided into three or more SRS resource subsets, and the transmission performance of the SRS resources in the three or more SRS resource subsets decreases sequentially. In this case, the SRI indication field may include three or more subsections, and each subsection corresponds to a resource subset. This embodiment can perform more fine-grained division on the N SRS resources, which helps the network device to schedule SRS resources with different transmission performance in a more balanced manner.

It should be noted that the names of the above information are only examples. With the evolution of communication technology, any of the above information may change its name, but no matter how the name changes, as long as its meaning is the same as the meaning of the above information in this application , all fall within the protection scope of this application.

The foregoing mainly introduces the solution provided by the present application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, each network element in the above-mentioned implementation includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that, in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

According to the foregoing method, FIG. 7 is a schematic structural diagram of an information indicating device provided by an embodiment of the present application. As shown in FIG. 7 , the information indicating device may be a terminal device or a network device, or may be a chip or a circuit, for example, it may be provided in a terminal A chip or circuit of a device, for example, a chip or circuit that can be provided in a network device.

Further, the information indicating device 701 may further include a bus system, wherein the processor 702, the memory 704, and the transceiver 703 may be connected through the bus system.

It should be understood that the above-mentioned processor 702 may be a chip. For example, the processor 702 may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a system on chip (SoC). It can be a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller). unit, MCU), it can also be a programmable logic device (PLD) or other integrated chips.

In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 702 or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor 702 . The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 704, and the processor 702 reads the information in the memory 704, and completes the steps of the above method in combination with its hardware.

It should be noted that the processor 702 in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be 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 . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory 704 in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

When the information indicating device 701 corresponds to the terminal device in the above method, the information indicating device may include a processor 702 , a transceiver 703 and a memory 704 . The memory 704 is used for storing instructions, and the processor 702 is used for executing the instructions stored in the memory 704, so as to implement the relevant solution of the terminal device in the corresponding method of any one or any of the items shown in FIG. 1 to FIG. 6 above. .

When the information indicating device 701 is the above-mentioned terminal device, the information indicating device 701 may be configured to execute the method executed by the terminal device in any one of the first embodiment to the third embodiment.

The information indicating device 701 is the above-mentioned terminal device, and when the first embodiment is implemented, the transceiver 703 may receive the first information sent by the network device, and the processor 702 may identify at least one of the SRI indication fields according to the sounding reference signal resource carried in the first information In the subsection, the target SRS resource is determined from the K sounding reference signal SRS resource subsets, and the target SRS resource is used to determine the precoding used for PUSCH transmission. The first information includes an SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target sounding reference signal SRS resource to enable the terminal equipment to determine the precoding used for the physical uplink shared channel PUSCH transmission, and the target SRS The resource is one or more of N SRS resources used by the terminal device when sending SRS, the N SRS resources are used to obtain K SRS resource subsets, and each SRS resource subset of the K SRS resource subsets includes N SRS resources For one or more SRS resources in the SRS resources, K and N are positive integers, and K≤N.

When the information indicating device 701 is the foregoing network device, the information indicating device 701 may be configured to execute the method executed by the network device in any one of the foregoing Embodiments 1 to 3.

The information indicating device 701 is the above-mentioned network device, and when the first embodiment is implemented, the processor 702 can obtain K SRS resource subsets according to the N SRS resources used when the terminal device sends the sounding reference signal SRS, and the transceiver 703 can send to the terminal device. The first information is received, and the terminal equipment uses precoding to perform physical uplink shared channel PUSCH transmission uplink data. The first information includes a sounding reference signal resource identifier SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target SRS resource to enable the terminal device to determine the precoding used for PUSCH transmission, and the target SRS resource is One or more of the N SRS resources, each SRS resource subset of the K SRS resource subsets includes one or more SRS resources of the N SRS resources, K and N are positive integers, and K≤N.

For the concepts related to the technical solutions provided by the embodiments of the present application involved in the information indication device, please refer to the descriptions of the foregoing methods or other embodiments for explanations and detailed descriptions and other steps, which will not be repeated here.

According to the foregoing method, FIG. 8 is a schematic structural diagram of an information indication apparatus provided by an embodiment of the present application. As shown in FIG. 8 , an information indication apparatus 801 may include a communication interface 803 , a processor 802 and a memory 804 . The communication interface 803 is used for inputting and/or outputting information; the processor 802 is used for executing a computer program or instruction, so that the information indicating device 801 implements the method on the terminal device side in the above-mentioned related solutions of FIG. 1 to FIG. 6 , or make the information indicating device 801 implement the method on the network device side in the above-mentioned related solutions of FIG. 1 to FIG. 6 . In this embodiment of the present application, the communication interface 803 can implement the solution implemented by the transceiver 703 in FIG. 7 , the processor 802 can implement the solution implemented by the processor 702 in FIG. 7 , and the memory 804 can implement the memory 704 in FIG. 7 . The implemented solution will not be repeated here.

Based on the above embodiments and the same concept, FIG. 9 is a schematic diagram of an information indicating apparatus provided by an embodiment of the present application. As shown in FIG. 9 , the information indicating apparatus 901 may be a terminal device or a network device, or may be a chip or a circuit, such as Chips or circuits that can be installed in terminal equipment or network equipment.

The information indicating device may correspond to the terminal device in the above method. The information indicating apparatus may implement the steps performed by the terminal device in any one or more of the corresponding methods shown in FIG. 1 to FIG. 6 above. The information indicating device may include a processing unit 902 and a transceiving unit 903 .

When the information indicating device 901 is the above-mentioned terminal device, the transceiver unit 903 can be a sending unit or a transmitter when sending information, the transceiver unit 903 can be a receiving unit or a receiver when receiving information, and the transceiver unit 903 can be a transceiver. The transmitter, transmitter or receiver can be a radio frequency circuit, when the information indicating device 901 includes a storage unit, the storage unit is used to store computer instructions, the processing unit 902 is connected in communication with the storage unit, and the processing unit 902 executes the computer instructions stored in the storage unit , so that the information indicating apparatus 901 can be used to execute the method executed by the terminal device in any one of the foregoing Embodiments 1 to 3. The processing unit 902 may be a general-purpose central processing unit (CPU), a microprocessor, or an Application Specific Integrated Circuit (ASIC).

The information indicating device 901 is the above-mentioned terminal device, and when the first embodiment is implemented, the transceiver unit 903 may receive the first information sent by the network device, and the processing unit 902 may identify at least one of the SRI indication fields according to the sounding reference signal resource carried in the first information In the subsection, the target SRS resource is determined from the K sounding reference signal SRS resource subsets, and the target SRS resource is used to determine the precoding used for PUSCH transmission. The first information includes an SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target sounding reference signal SRS resource to enable the terminal equipment to determine the precoding used for the physical uplink shared channel PUSCH transmission, and the target SRS The resource is one or more of N SRS resources used by the terminal device when sending SRS, the N SRS resources are used to obtain K SRS resource subsets, and each SRS resource subset of the K SRS resource subsets includes N SRS resources For one or more SRS resources in the SRS resources, K and N are positive integers, and K≤N.

When the information indicating device 901 is the above-mentioned network device, the transceiver unit 903 can be a sending unit or a transmitter when sending information, the transceiver unit 903 can be a receiving unit or a receiver when receiving information, and the transceiver unit 903 can be a transceiver. The transmitter, transmitter or receiver can be a radio frequency circuit, when the information indicating device 901 includes a storage unit, the storage unit is used to store computer instructions, the processor is connected in communication with the memory, and the processor executes the computer instructions stored in the memory to make the information The instructing apparatus 901 may be configured to execute the method executed by the network device in any one of the foregoing Embodiments 1 to 3. The processor may be a general-purpose central processing unit (CPU), a microprocessor, or an application specific integrated circuit (ASIC).

The information indicating device 901 is the above-mentioned network device, and when the first embodiment is implemented, the processing unit 902 can obtain K SRS resource subsets according to the N SRS resources used when the terminal device sends the sounding reference signal SRS, and the transceiver unit 903 can send to the terminal device. The first information is received, and the terminal equipment uses precoding to perform physical uplink shared channel PUSCH transmission uplink data. The first information includes a sounding reference signal resource identifier SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target SRS resource to enable the terminal device to determine the precoding used for PUSCH transmission, and the target SRS resource is One or more of the N SRS resources, each SRS resource subset of the K SRS resource subsets includes one or more SRS resources of the N SRS resources, K and N are positive integers, and K≤N.

When the information indicates that the device 901 is a chip, the transceiver unit 903 may be an input and/or output interface, a pin or a circuit, or the like. The processing unit 902 can execute the computer-executable instructions stored in the storage unit, so that the information instructs the chip in the device 901 to execute the method executed in any of the first to third embodiments. Optionally, the storage unit is a storage unit in a chip, such as a register, a cache, etc., and the storage unit can also be a storage unit located outside the chip in the information indicating device 901, such as a read-only memory (Read Only Memory, ROM) or Other types of static storage devices that can store static information and instructions, such as Random Access Memory (RAM).

For the concepts related to the technical solutions provided by the embodiments of the present application involved in the information indicating device 901, please refer to the descriptions of the foregoing methods or other embodiments for explanations, detailed descriptions and other steps, which will not be repeated here.

It can be understood that, the functions of each unit in the above-mentioned information indicating apparatus 901 may refer to the implementation of the corresponding method embodiments, which will not be repeated here.

It should be understood that the division of the units of the above information indicating apparatus 901 is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. In this embodiment of the present application, the transceiver unit 903 may be implemented by the transceiver 703 shown in FIG. 7 above, and the processing unit 902 may be implemented by the processor 702 shown in FIG. 7 above.

According to the method provided by the embodiment of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is made to execute the steps shown in FIGS. 1 to 6 . The method of any one of the illustrated embodiments.

According to the method provided by the embodiment of the present application, the present application further provides a computer-readable storage medium, where the computer-readable medium stores program codes, and when the program codes are executed on a computer, the computer is made to execute FIG. 1 to FIG. 6 . The method of any one of the illustrated embodiments.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state discs, SSD)) etc.

The network equipment in the above apparatus embodiments corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units, for example, the communication unit (transceiver) performs the receiving or sending in the method embodiments. The steps other than sending and receiving can be performed by the processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. The number of processors may be one or more.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware accomplish. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

An information indication method, characterized in that the method comprises:

receiving first information sent by a network device, the first information includes a sounding reference signal resource identifier SRI indication field, the SRI indication field includes at least one sub-part, and the SRI indication field indicates a target sounding reference signal SRS resource, Let the terminal equipment determine the precoding used for the physical uplink shared channel PUSCH transmission; the target SRS resource is one or more of the N SRS resources used by the terminal equipment when sending SRS, and the N SRS resources are used for Obtaining K SRS resource subsets, each SRS resource subset of the K SRS resource subsets includes one or more SRS resources in the N SRS resources; K and N are positive integers, and K≤N;

determining the target SRS resource from the K SRS resource subsets according to at least one sub-portion of the SRI indication field;

The precoding used for the PUSCH transmission is determined using the target SRS resource.
The method according to claim 1, wherein before the receiving the first information sent by the network device, the method further comprises:

Receive configuration information sent by the network device; the configuration information is used to indicate the SRS resources included in each SRS resource subset of the K SRS resource subsets.
The method of claim 2, wherein when the K is greater than or equal to 2, then:

The at least one subsection includes a first subsection and a second subsection, the first subsection is used to indicate one SRS resource subset in the K SRS resource subsets, and the second subsection is used to indicate one or more SRS resources in the one SRS resource subset;

The determining the target SRS resource from the K SRS resource subsets according to at least one sub-portion of the SRI indication field includes:

determining a target SRS resource subset from the K SRS resource subsets according to the first sub-part of the SRI indication field;

The target SRS resource is determined from the subset of target SRS resources according to the second sub-part of the SRI indication field.
The method according to claim 3, wherein the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same; the value of K is configured by high-level signaling or preset. definition;

After receiving the configuration information sent by the network device, the method further includes:

According to the value of the K, determine the first number of bits; the first number of bits is used to determine the first subsection from the SRI indication field;

According to the number of SRS resources included in each SRS resource subset, a second number of bits is determined; the second number of bits is used to determine the second subsection from the SRI indication field;

Wherein, the sum of the first number of bits and the second number of bits is equal to the number of bits of the SRI indication field.
The method of claim 3, wherein the method further comprises:

The first bit number and the second bit number are configured or pre-defined by high-level signaling; the first bit number is used to determine the first subsection from the SRI indication field, the second bit number The number of bits is used to determine the second subsection from the SRI indication field.
The method according to any one of claims 2 to 5, wherein when the K is 1, then:

The SRS resource subset includes L SRS resources in the N SRS resources, the number of bits of the SRI indication field is L, and a combination of the values of each bit in the L bits constitutes the L A bit state of bits, one or more of the L SRS resources corresponds to a bit state of the L bits; L is a positive integer less than N;

The determining the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI includes:

The target SRS resource is determined from the L SRS resources according to the bit state of the L bits of the SRI indication field.
The method of claim 2, wherein when the K is 2, then:

The K SRS resource subsets include a first SRS resource subset and a second SRS resource subset, the first SRS resource subset includes M SRS resources among the N SRS resources, and the second SRS resource subset The resource subset includes NM SRS resources other than the M SRS resources in the N SRS resources; M is a positive integer less than N;

The at least one subsection includes a first subsection and a second subsection, the first subsection is used to indicate one or more SRS resources in the first SRS resource subset, and the second subsection is used for indicating one or more SRS resources in the second subset of SRS resources;

The determining the target SRS resource from the K SRS resource subsets according to at least one sub-portion of the SRI indication field includes:

determining a first target SRS resource from the first SRS resource subset according to the first sub-part of the SRI indication field;

determining a second target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field;

The first target SRS resource and the second target SRS resource are used as the one or more target SRS resources.
The method of claim 7, wherein the configuration information is used to indicate the M;

After receiving the configuration information sent by the network device, the method further includes:

The N SRS resources are divided into the first SRS resource subset and the second SRS resource subset according to the M.
The method according to claim 7 or 8, wherein the length of the first subsection is M bits, and each bit in the M bits corresponds to one SRS resource in the M SRS resources, when When the value of the first bit in the M bits is the first value, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for the PUSCH transmission, and the first bit is the M bit any bit in;

The determining of the first target SRS resource from the first SRS resource subset according to the first sub-part of the SRI indication field includes:

The SRS resource corresponding to the bit whose value is the first value in the first subsection is used as the first target SRS resource.
The method according to any one of claims 7 to 9, wherein the second sub-part comprises one or more bits, and a combination of the value of each bit in the one or more bits A bit state constituting the second sub-part; the configuration information is also used to indicate the bit state of the second sub-part corresponding to the number of SRS resources selected from the second SRS resource subset;

The determining of the second target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field includes:

According to the bit state of the second sub-part of the SRI indication field, the number of SRS resources corresponding to the bit state is selected from the second SRS resource subset as the second target SRS resource.
An information indication method, characterized in that the method comprises:

K SRS resource subsets are obtained according to the N SRS resources used by the terminal device to send the sounding reference signal SRS; each SRS resource subset of the K SRS resource subsets includes one or more of the N SRS resources SRS resources; K, N are positive integers, K≤N;

Sending first information to the terminal device, where the first information includes a sounding reference signal resource identifier SRI indication field, the SRI indication field includes at least one subsection, and the SRI indication field indicates the target SRS resource to make the terminal The device determines the precoding used for physical uplink shared channel PUSCH transmission; the target SRS resource is one or more of the N SRS resources;

Receive the uplink data that the terminal device uses the precoding to transmit the PUSCH.
The method according to claim 11, wherein before the sending the first information to the terminal device, the method further comprises:

Send configuration information to the terminal device; the configuration information is used to indicate the SRS resources included in each SRS resource subset of the K SRS resource subsets.
13. The method of claim 12, wherein when the K is greater than or equal to 2, the at least one subsection includes a first subsection and a second subsection, the first subsection being used for the The terminal device determines a target SRS resource subset from the K SRS resource subsets, and the second subsection is used for the terminal device to determine the target SRS resource from the target SRS resource subset.
The method of claim 13, wherein the number of SRS resources included in any two SRS resource subsets of the K SRS resource subsets is the same;

The method also includes:

The value of K is configured or pre-defined by high-level signaling, and the value of K is used by the terminal device to determine the first number of bits, and the number of SRS resources included in each SRS resource subset is used for the The terminal device determines the second number of bits; or,

Configure or pre-define the first bit number and the second bit number through higher layer signaling;

The first number of bits is used by the terminal device to determine the first subsection from the SRI indication field, and the second number of bits is used by the terminal device from the SRI indication field identified in the second subsection.
The method according to any one of claims 12 to 14, wherein when the K is 1, then:

The number of bits of the SRI indication field is L, and a combination of the value of each bit in the L bits constitutes a bit state of the L bits, and L is a positive integer less than N;

The obtaining the K SRS resource subsets according to the N SRS resources includes:

L SRS resources are selected from the N SRS resources to form the SRS resource subset; one or more SRS resources in the L SRS resources correspond to a bit state of the L bits, and the The bit status of the L bits of the SRI indication field is used by the terminal device to determine the target SRS resource from the L SRS resources.
The method of claim 12, wherein when the K is 2, then:

The configuration information is used to indicate M; the M is used by the terminal device to divide the N SRS resources into a first SRS resource subset and a second SRS resource subset; the first SRS resource subset includes M SRS resources in the N SRS resources, the second SRS resource subset includes NM SRS resources other than the M SRS resources in the N SRS resources; M is a positive integer less than N ;

The at least one subsection includes a first subsection and a second subsection, the first subsection is used for the terminal device to determine the first target SRS resource from the first SRS resource subset, and the second subsection for the terminal device to determine a second target SRS resource from the second SRS resource subset, and the first target SRS resource and the second target SRS resource constitute the target SRS resource.
The method of claim 16, wherein the length of the first subsection is M bits, and each bit in the M bits corresponds to one SRS resource in the M SRS resources, and when the When the value of the first bit in the M bits is the first value, it indicates that the SRS resource corresponding to the first bit is used to determine the precoding used for the PUSCH transmission, and the first bit is the SRS resource in the M bits. any bit;

The bit state of the M bits is used by the terminal device to use the SRS resource corresponding to the bit value of the first value in the first subsection as the first target SRS resource.
The method according to claim 16 or 17, wherein the second sub-part comprises one or more bits, and a combination of the values of each of the one or more bits constitutes the first A bit state of the two subsections;

The configuration information is also used to indicate the bit status of the second subsection corresponding to the number of SRS resources selected from the second SRS resource subset; the bit status of the second subsection of the SRI indication field is used for all The terminal equipment selects the second target SRS resource from the second SRS resource subset.
An information indicating device, characterized in that the device comprises:

A transceiver unit, configured to receive first information sent by a network device, where the first information includes a sounding reference signal resource identifier (SRI) indication field, the SRI indication field includes at least one subsection, and the SRI indication field is detected by indicating a target The reference signal SRS resource enables the terminal device to determine the precoding used for PUSCH transmission on the physical uplink shared channel; the target SRS resource is one or more of the N SRS resources used by the terminal device when sending SRS, and the N The SRS resources are used to obtain K SRS resource subsets, and each SRS resource subset of the K SRS resource subsets includes one or more SRS resources in the N SRS resources; K and N are positive integers , K≤N;

A processing unit, configured to determine the target SRS resource from the K SRS resource subsets according to at least one sub-part of the SRI indication field, and use the target SRS resource to determine the preset used for the PUSCH transmission coding.
The apparatus according to claim 19, wherein before the transceiver unit receives the first information sent by the network device, it is further configured to:

Receive configuration information sent by the network device; the configuration information is used to indicate the SRS resources included in each SRS resource subset of the K SRS resource subsets.
The device according to claim 19 or 20, wherein when the K is greater than or equal to 2, then:

The at least one subsection includes a first subsection and a second subsection, the first subsection is used to indicate one SRS resource subset in the K SRS resource subsets, and the second subsection is used to indicate one or more SRS resources in the one SRS resource subset;

The processing unit is specifically used for:

determining a target SRS resource subset from the K SRS resource subsets according to the first sub-part of the SRI indication field;

The target SRS resource is determined from the subset of target SRS resources according to the second sub-part of the SRI indication field.
The device according to any one of claims 19 to 21, wherein when the K is 1, then:

The SRS resource subset includes L SRS resources in the N SRS resources, the number of bits of the SRI indication field is L, and a combination of the values of each bit in the L bits constitutes the L A bit state of bits, one or more of the L SRS resources corresponds to a bit state of the L bits; L is a positive integer less than N;

The processing unit is specifically used for:

The target SRS resource is determined from the L SRS resources according to the bit state of the L bits of the SRI indication field.
The device according to claim 19 or 20, wherein when the K is 2, then:

The K SRS resource subsets include a first SRS resource subset and a second SRS resource subset, the first SRS resource subset includes M SRS resources among the N SRS resources, and the second SRS resource subset The resource subset includes NM SRS resources other than the M SRS resources in the N SRS resources; M is a positive integer less than N;

The at least one subsection includes a first subsection and a second subsection, the first subsection is used to indicate one or more SRS resources in the first SRS resource subset, and the second subsection is used for indicating one or more SRS resources in the second subset of SRS resources;

The processing unit is specifically used for:

determining a first target SRS resource from the first SRS resource subset according to the first sub-part of the SRI indication field;

determining a second target SRS resource from the second SRS resource subset according to the second sub-part of the SRI indication field;

The first target SRS resource and the second target SRS resource are used as the one or more target SRS resources.
An information indicating device, characterized in that the device comprises:

A processing unit, configured to obtain K SRS resource subsets according to the N SRS resources used when the terminal device sends the sounding reference signal SRS; each SRS resource subset of the K SRS resource subsets includes the N SRS resources One or more SRS resources in; K, N are positive integers, K≤N;

A transceiver unit, configured to send first information to a terminal device, where the first information includes a sounding reference signal resource identifier SRI indication field, the SRI indication field includes at least one sub-part, and the SRI indication field indicates a target SRS resource by indicating a target SRS resource. , let the terminal equipment determine the precoding used for physical uplink shared channel PUSCH transmission; the target SRS resource is one or more of the N SRS resources; and, receive the terminal equipment using the precoding Uplink data for the PUSCH transmission.
An information indicating device, characterized in that it includes a processor and a communication interface, and the communication interface is configured to receive signals from other communication devices other than the information indicating device and transmit them to the processor or transfer signals from the information indicating device. The signal of the processor is sent to other communication devices than the information indicating device, and the processor is used to implement any one of claims 1 to 10 or any one of 11 to 18 through logic circuits or executing code instructions method described in item.
An information indicating device, characterized in that it includes a processor, the processor is connected to a memory, the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the The apparatus performs the method of any one of claims 1 to 10, or any one of 11 to 18.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and when the computer program is executed, any one of claims 1 to 10 or 11 to 18 is implemented. The method of any one.
A chip, characterized in that it includes a processor and an interface;

The processor is configured to read an instruction through the interface to execute the information indicating method of any one of claims 1 to 10 or any one of claims 11 to 18.
A computer program product, characterized in that, the computer program product includes a computer program or instruction, and when the computer program or instruction is executed by a communication device, realizes any one of claims 1 to 10, or 11 to 18 The method of any of the above.
An information indicating system, characterized by comprising the information indicating device according to any one of claims 19-23 and the information indicating device according to claim 24 .