Beam Determination in Wireless Networks
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Solution Overview
Problem
In wireless communications, beam failure recovery is hindered by unreliable beam determinations, particularly when only one beam is indicated to a base station, leading to inefficiencies in communication resource utilization and performance.
Innovation Solution
To enhance beam determination reliability, the system updates information and resources associated with beams for each node, determines a preferred beam for each node, and communicates this information through messages associated with random access procedures or uplink control channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one beam is indicated to a base station for beam failure recovery, then the communication resource utilization is simplified, but the beam determination reliability deteriorates
Solution Approach 1:
The patent segments the beam determination process by node, where each node (first node and second node) independently determines its preferred beam. This segmentation allows multiple nodes to provide diverse beam options, improving reliability without significantly increasing overall system complexity.
Solution Approach 2:
The patent changes the parameter of beam indication from a single beam to multiple beams (first preferred beam and second preferred beam from different nodes). This parameter change enhances beam determination reliability by providing more options while maintaining manageable resource utilization.
2Reliability
If beam determination is performed for multiple nodes, then transmission diversity is improved, but the information management complexity increases
Solution Approach 1:
The patent merges the beam determination information from multiple nodes into a unified recovery indication message. The wireless device combines preferred beam information from the first node and second node into a single message transmitted to the base station, achieving transmission diversity while managing information complexity efficiently.
Solution Approach 2:
The patent creates a universal beam failure recovery mechanism that works across multiple nodes. The same message structure and procedure are used regardless of which node experiences beam failure, providing a multi-functional solution that handles various failure scenarios without requiring separate management procedures for each node.
3Measurement precision
If preferred beam information from multiple nodes is communicated, then beam determination accuracy is improved, but the message overhead increases
Solution Approach 1:
The patent implements partial action by indicating only the most relevant preferred beams (first preferred beam from first node and second preferred beam from second node) rather than all possible beam options. This selective indication improves beam determination accuracy while keeping message overhead manageable by including only the necessary beam information.
Data Source
AI summary
Beam determination may be used in wireless communications, for example, in a beam failure recovery procedure. One or more parameters may be communicated and/or used to indicate an association between resources and a corresponding control resource set (CORESET) pool index of multiple CORESET pool indices. For each of the multiple CORESET pool indices, a reference signal associated with the CORESET pool index may be determined. Wireless communications may be performed by selecting a reference signal for each of the multiple CORESET pool indices, and resources associated with a corresponding CORESET pool index may be communicated based on the selected reference.