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CQI feedback enhancement method, device, system, UE and base station

A base station, modulation and coding technology, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve the problems of retransmission timeout, no good solution, large delay, etc., to meet the reliability and low time delay. delay, reliable CQI reporting, and the effect of meeting stringent requirements

Active Publication Date: 2022-07-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the reported CQI is closer to the CQI during service data transmission, the aperiodic CQI reporting process is more complicated and cumbersome, and the delay is longer, which may lead to retransmission timeout, which may cause the service delay target to fail to be achieved
[0006] Therefore, there is no good solution for CQI reporting with small resource overhead and reliability.

Method used

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  • CQI feedback enhancement method, device, system, UE and base station
  • CQI feedback enhancement method, device, system, UE and base station
  • CQI feedback enhancement method, device, system, UE and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In order to solve the problem of large resource overhead and / or large delay in CQI reporting, an embodiment of the present invention provides a CQI feedback enhancement method. The CQI feedback enhancement method provided in this embodiment is a UE-side CQI feedback enhancement method, See figure 1 shown, including:

[0052] S101: When receiving the downlink service data delivered by the base station, decode the downlink service data;

[0053] S102: If the result of decoding the downlink service data is an error, send first information to the base station, where the first information includes a NACK instruction and aperiodic CQI information, or the first information includes a NACK state among multiple NACK states, Different NACK states correspond to different CQI information.

[0054] After the base station receives the first information, the base station determines the parameters of the retransmitted data packet according to the CQI information indicated by the firs...

Embodiment 2

[0138] In order to solve the problem of large resource overhead and / or large delay when reporting CQI, an embodiment of the present invention provides a CQI feedback enhancement method. The CQI feedback enhancement method provided in this embodiment is a CQI feedback enhancement method on the base station side, See figure 2 shown, including:

[0139] S201: Deliver downlink service data to the UE;

[0140] S202: In the case where the result of decoding the downlink service data is an error, receive first information sent from the UE, where the first information includes a NACK command and aperiodic CQI information, or the first information includes one of multiple NACK states NACK state, different NACK states correspond to different CQI information.

[0141] After the base station receives the first information, the base station determines the parameters of the retransmitted data packet according to the CQI information indicated by the first information, and sends the retran...

Embodiment 3

[0224] In order to solve the problem of large resource overhead and / or large delay when reporting CQI, an embodiment of the present invention provides a CQI feedback enhancement method. The CQI feedback enhancement method provided in this embodiment is a system CQI feedback enhancement method. The system Including base station and UE, see image 3 shown, including:

[0225] S301: The base station delivers downlink service data to the UE;

[0226] S302: The UE decodes the downlink service data;

[0227] S303: In the case where the result of decoding the downlink service data is an error, send first information to the base station, where the first information includes a NACK command and aperiodic CQI information, or the first information includes a NACK state among multiple NACK states, Different NACK states correspond to different CQI information;

[0228] S304: The base station receives the first information.

[0229] In S304, after the base station receives the first info...

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Abstract

In the CQI feedback enhancement method, device, system, UE, and base station provided by the embodiments of the present invention, the base station delivers downlink service data to the UE; the UE decodes the downlink service data; sending first information, where the first information includes a NACK command and aperiodic CQI information, or the first information includes one NACK state among multiple NACK states, and different NACK states correspond to different CQI information; the base station receives the first information; In some implementation processes, the CQI reporting resource overhead is small, low latency is achieved, and reliable CQI reporting is achieved, meeting the stringent requirements for data transmission reliability and low latency in some scenarios.

Description

technical field [0001] Embodiments of the present invention relate to, but are not limited to, the field of communications, and specifically relate to, but are not limited to, a CQI (Channel Quality Indicator, channel quality information) feedback enhancement method, apparatus, system, UE, and base station. Background technique [0002] The three main application scenarios of the fifth generation mobile communication technology (5G, the 5th Generation mobile communication technology) are enhanced mobile broadband (eMBB, enhanced MobileBroadband), massive Internet of things (mMTC, massive Machine Type Communications) and high reliability and low time. Ultra-Reliable and Low Latency Communications (URLLC); the URLLC scenario has strict requirements on the reliability and low latency of data transmission. [0003] In the related art, when the base station sends downlink service data to the UE, it will determine the MCS (Modulation and Coding Scheme, modulation and coding scheme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/0057H04L5/0055H04L1/0027H04L1/0026H04L1/0016H04L1/0008H04L1/1671H04B7/0632H04L1/0003H04L1/1896H04L1/203
Inventor 林伟郝鹏石靖苟伟任敏韩祥辉
Owner ZTE CORP