Information indication method and device

By dividing SRS resources and changing the SRI indicator domain structure, the problem of excessive SRI indicator domain when the terminal device supports more transmit antennas is solved, DCI transmission is optimized, and the uplink transmission efficiency and quality of the terminal device are improved.

CN115989704BActive Publication Date: 2025-09-05HUAWEI TECH CO LTD
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Patent Information

Application Number
CN202080103452.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-08-24
Publication Date
2025-09-05
Estimated Expiration
2040-08-24

AI Technical Summary

Technical Problem

In future systems, when terminal devices support more transmit antennas, the prior art cannot effectively solve the problem of excessive SRI indicator domain sent by network devices, resulting in increased DCI transmission burden and reduced reliability.

Method used

By dividing SRS resources and changing the SRI indication domain structure, the SRI indication domain is divided into a multi-level indication structure, and the terminal equipment and network equipment jointly perform precoding indication of SRS resources to optimize the selection and use of SRS resources.

Benefits of technology

The number of bits in the SRI indicator field is effectively reduced, and the reliability of DCI transmission and the uplink transmission efficiency and quality of terminal equipment are improved.

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Abstract

An information indication method and apparatus are used to solve the technical problem that the SRI indication field sent by a network device is too large when the terminal device supports more transmitting antennas. The method includes: the network device obtains K SRS resource subsets based on the N SRS resources of the terminal device, and sets the SRI indication field to include at least one sub-part to indicate that the terminal device determines the precoding used for uplink transmission from the K SRS resource subsets based on the at least one sub-part. By combining the division of N SRS resources and the change of the SRI indication field structure to indicate the precoding used for uplink transmission, as long as the division method of the N SRS resources is reasonable, even if the terminal device supports more transmitting antennas and the value of N is large, it is possible to compress the number of bits of the SRI indication field to less than N. This grouped indication method helps to solve the technical problem of the SRI indication field being too large.
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