A method for generating a random access response, a method for adjusting uplink transmission time, and an apparatus.

By introducing a latency out-of-bounds flag and a numerical part into the random access response, positive and negative latency representations are supported. Different precision and range modes are adopted to adapt to high latency scenarios, solving the terminal access problem and improving access success rate and robustness.

CN121547845BActive Publication Date: 2026-06-30SICHUAN CHUANGZHI LIANHENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN CHUANGZHI LIANHENG TECH CO LTD
Filing Date
2026-01-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In high-latency wireless communication scenarios, existing technologies cannot effectively handle the access problem when the PRACH signal delay is large after delay pre-compensation, resulting in the terminal being unable to synchronize with the base station.

Method used

By introducing a delay out-of-bounds flag and a delay value in the random access response, positive and negative delay representations are supported, and different delay representation modes are adopted to adapt to different delay conditions, achieving high-precision adjustment and wide coverage.

Benefits of technology

It significantly improves the system's access success rate and robustness in scenarios with large latency variations, ensuring that the terminal can accurately adjust its uplink transmission time and successfully access the network in such scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application provides a method for generating a random access response, a method and apparatus for adjusting uplink transmission time, and is applied in the field of communication technology. The method for generating the random access response includes: receiving a random access preamble sent by a terminal and performing a delay estimation on the random access preamble to obtain a measured delay value; generating a random access response based on the measured delay value, wherein the random access response carries a timing advance field, the timing advance field including a delay out-of-bounds flag and a delay value, the delay out-of-bounds flag indicating the selected delay representation mode, and the delay value carrying the quantized delay value determined according to the delay representation mode, different delay representation modes corresponding to different delay quantization precision and delay representation range, and the delay value supporting simultaneous representation of positive and negative delay values; and sending the random access response to the terminal.
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