Reference-Signal Beam Selection for Efficient Wireless Random Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beamforming and random access procedures, particularly in environments with multiple base stations and diverse wireless devices, leading to suboptimal connectivity and resource utilization.
Innovation Solution
Implementing a beam management mechanism for random access procedures that adapts to the specific capabilities and configurations of wireless devices and base stations, utilizing reference signals and resource associations to optimize beam selection and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional random access procedures are used in beamformed systems, then device compatibility is maintained, but beam management efficiency deteriorates leading to suboptimal connectivity
Solution Approach 1:
The patent applies preliminary action by having the base station pre-associate multiple reference signals (SSBs or CSI-RS) with random access resources before the random access procedure begins. This pre-configuration enables the wireless device to efficiently select appropriate beams and resources without requiring extensive real-time beam management during the random access process, thereby improving both connectivity reliability and access efficiency.
2Productivity
If beam management is simplified for random access, then procedure speed increases, but adaptability to diverse device capabilities deteriorates
Solution Approach 1:
The patent implements universality by designing a beam management mechanism that works across different device types and capabilities. The base station associates reference signals with random access resources in a manner that is universally applicable to various wireless devices, whether they support advanced beamforming or have more limited capabilities. This allows the system to maintain high random access speed while adapting to diverse device requirements through the flexible reference signal association framework.
Data Source
AI summary
A wireless device receives, from a base station, configuration parameters indicating a plurality of first reference signals (RSs) including a first RS associated with a plurality of second RSs. Based on signal strengths of the plurality of first RSs, the first RS is selected from the plurality of first RSs. Based on signal strengths of the plurality of second RSs, a second RS is selected from the plurality of second RSs associated with the first RS. Based on the selected second RS, the wireless device transmits a random access preamble.