Base-Station Signaling for Multi-Panel Random Access Selection
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Solution Overview
Problem
In 5G NR systems, terminals with multiple antenna panels face challenges in initiating random access to base stations, as existing solutions do not effectively address how to determine the appropriate antenna panel and beam for random access, leading to reduced accuracy and increased delay.
Innovation Solution
The serving base station sends random access indication signaling to the terminal, specifying the target antenna panel and/or target beam for sending a random access preamble, using identifiers or reference signal identifiers to guide the terminal's selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal uses multiple antenna panels for random access, then the space diversity gain is improved, but the difficulty of determining the appropriate antenna panel and beam increases
Solution Approach 1:
The patent introduces measurement object information as an intermediary that carries identification information of the antenna panel and beam. This intermediary enables the terminal to determine the appropriate antenna panel and beam for random access by providing the necessary mapping relationships between reference signals and antenna panels/beams, thus resolving the complexity without compromising the space diversity gain from multiple antenna panels
2Ease of operation
If the terminal initiates random access without clear panel and beam indication, then the access process is simple, but the accuracy and success rate of random access deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring measurement object information that includes identification information of the antenna panel and beam before the random access process. This allows the terminal to quickly and accurately determine the appropriate antenna panel and beam without complex real-time decision-making, thus maintaining both simplicity and accuracy in the random access process
Data Source
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AI summary
Disclosed are a random access indication method and apparatus, and a storage medium, relating to the technical field of communications. The method comprises: a serving base station sending random access indication signaling, the random access indication signaling indicating, to a terminal, a target antenna panel and/or target beam for sending a random access preamble; and the terminal receiving the random access indication signaling, and determining, according to the random access indication signaling, the target antenna panel and/or target beam for sending the random access preamble. In the embodiments of the present disclosure, a serving base station sends random access indication signaling to a terminal, so that the terminal can determine a target antenna panel and/or target beam for sending a random access preamble accordingly. In this way, when the terminal has multiple antenna panels, the terminal can accurately determine which antenna panel to use to initiate random access, thereby facilitating an improvement in the accuracy and success rate of random access, and reducing the delay of random access.