Predicting selection of random access channel resources using spatial beams

By using spatial beam prediction capabilities in UEs and network nodes to select RACH resources and linking to beam configuration prediction, the problem of beam configuration mismatch during initial access is solved, signal quality is improved and access failure rate is reduced.

CN122423294APending Publication Date: 2026-07-17QUALCOMM INC
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Patent Information

Application Number
CN202380104615.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-12-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the prior art, during the initial access process, the user equipment (UE) and network node suffer from beam configuration mismatch, which leads to reduced received signal quality, increased recovery errors, and increased data transmission delay. Furthermore, the ambiguity in selecting RACH resources can cause the access process to fail.

Method used

By using spatial beam prediction capabilities, the UE and network nodes select RACH resources and link them to one or more beam configuration predictions instead of based on transmitted beam configurations, thereby optimizing beam direction and reducing signaling overhead.

Benefits of technology

It improves the quality of received signals, reduces recovery errors and data transmission delays, lowers the failure rate of the initial access process, and reduces ambiguity when selecting RACH resources.

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Abstract

本公开的各种方面整体涉及无线通信。在一些方面,作为初始接入过程的至少一部分,用户装备(UE)可接收指示第一组随机接入信道(RACH)资源和第二组RACH资源的系统信息,第一组RACH资源链接到一个或多个同步信号块(SSB),第二组RACH资源链接到一个或多个波束配置预测。作为初始接入过程的至少一部分,UE可以使用从第一组RACH资源和第二组RACH资源中选择的RACH资源来发送RACH消息,RACH资源是至少部分地基于UE的空间波束预测能力来选择的。描述了众多其他方面。
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