Beam Management via Random Access Channel Beam Information
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Solution Overview
Problem
Current wireless communication systems face challenges in providing reliable beam management for 5G networks, particularly in ensuring high signal strength and efficient beam switching to maintain connectivity and data transmission quality, especially in scenarios with high user density and massive sensor deployments.
Innovation Solution
The method involves determining and transmitting first and alternative beam information between mobile devices and base stations during the random access channel procedure, allowing for enhanced beam management and control channel beam switching based on signal strength, thereby improving beam reliability and reducing the likelihood of beam failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam switching is implemented to maintain connectivity in high user density scenarios, then reliability is improved, but device complexity increases due to the need for multiple beam management procedures
Solution Approach 1:
The patent applies preliminary action by determining alternative beam information in advance during the random access channel procedure, before actual data transmission begins. This allows the system to pre-identify backup beams, so when beam switching is needed, the transition can occur rapidly without complex real-time calculations, thus improving reliability while managing device complexity
Solution Approach 2:
The patent uses an intermediary approach by introducing a specific message format (e.g., MSG3 or MSG5 in random access procedures) that carries both primary and alternative beam information. This intermediary message structure facilitates the transfer of beam management data between devices and network infrastructure, simplifying the overall beam management complexity while ensuring reliable beam availability
2Speed
If alternative beam information is determined during random access channel procedure, then beam switching speed is improved, but loss of time occurs during the additional information exchange
Solution Approach 1:
The patent merges the determination of alternative beam information with the existing random access channel procedure. Instead of adding a separate beam management step, the alternative beam information is determined and transmitted within the same random access message flow (e.g., combined in MSG3 or MSG5), thereby achieving fast beam switching without significant additional time loss
Solution Approach 2:
By determining alternative beam information during the initial random access procedure before data transmission begins, the system performs the beam preparation work in advance. This preliminary action ensures that when beam switching is required during data transmission, the alternative beams are already identified and ready, enabling rapid switching without real-time computation delays
Data Source
AI summary
Enhanced beam management for a wireless communication system is provided. In one example, a method comprises: determining, by a device comprising a processor, first beam information for a selected first beam of beams associated with a base station device, wherein the selected first beam is for downlink transmission; determining, by the device, second beam information for a selected second beam of the beams associated with the base station device, wherein the selected second beam is an alternative to the selected first beam for transmission of downlink data to the device, and the determining the second beam information is performed during a random access channel procedure; and transmitting, by the device, to a network device, the first beam information and the second beam information.