Signal transmission method and device

The network device sends indication information to the terminal to indicate the RS energy ratio. The terminal determines the transmission energy of the second RS according to the indication information, which solves the problem of increased overhead caused by dynamic adjustment of DCI and improves PDSCH reception quality and channel adaptability.

CN115336310BActive Publication Date: 2025-09-05HUAWEI TECH CO LTD
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Patent Information

Application Number
CN202080099013.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-04-15
Publication Date
2025-09-05
Estimated Expiration
2040-04-15

AI Technical Summary

Technical Problem

In the prior art, dynamically indicating CT-RS energy adjustment of a terminal through DCI causes an increase in overhead, which affects channel aging and PDSCH reception quality.

Method used

The network device sends indication information to the terminal, indicating the energy ratio of the first RS and the second RS or the energy ratio of the PUSCH and the second RS. The terminal determines the transmission energy of the second RS according to the indication information, avoids dynamic adjustment of DCI, and realizes CSI joint measurement.

Benefits of technology

It reduces DCI overhead, improves PDSCH reception quality, avoids channel aging, and enhances the adaptability of signal transmission.

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Abstract

The present application provides a signal transmission method and apparatus, relating to the field of communication technology. In this method, a network device sends indication information to a terminal, the terminal sends a first RS to the network device, and determines the transmission energy of a second RS according to the indication information, and uses the transmission energy of the second RS to send the second RS to the network device. The first RS and the second RS are both used to measure CSI. The indication information is used to indicate X, where X is the energy ratio of the first RS and the second RS, or X is the energy ratio of the PUSCH sent by the terminal and the second RS, or X is the decibel value corresponding to the energy ratio of the first RS and the second RS, or X is the decibel value corresponding to the energy ratio of the PUSCH sent by the terminal and the second RS. In this method, the network device does not need to dynamically indicate the energy value that the second RS needs to adjust (increase or decrease) through DCI, thereby avoiding increasing the overhead of DCI.
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Citation Information

Patent Citations

  • Transmission method and apparatus of reference signals, and reception method and apparatus of reference signals

    CN106961689A