Sidelink Beam Management via Base Station and UE Coordination
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink beams for reliable and efficient communication between user equipment (UEs), particularly in determining optimal beam configurations for sidelink communications, which affects throughput and reliability.
Innovation Solution
The described techniques involve a method where a base station determines sidelink beams for beam training based on reports from UEs, and UEs can also determine their own beams to use, with the base station allocating resources, allowing for dynamic beam management and resource allocation for sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station determines all sidelink beams for beam training, then beam management reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the beam determination process into two parts: the base station determines a first set of beams and provides configuration, while the UE autonomously determines a second set of beams. This segmentation reduces signaling overhead by distributing the determination responsibility, improving the balance between reliability and signaling efficiency.
2Loss of information
If the UE determines transmission sidelink beams autonomously, then signaling overhead is reduced, but beam management reliability deteriorates
Solution Approach 1:
The base station acts as an intermediary by providing configuration information for the first set of beams, which guides the UE's autonomous beam determination. This intermediary role ensures that autonomous UE operation does not compromise overall system reliability, as the base station's configuration provides a foundation for accurate beam selection.
3Measurement precision
If beam sweeping capabilities are extensively reported, then beam management precision is improved, but device complexity increases
Solution Approach 1:
The UE performs beam sweeping capabilities reporting as a preliminary action during initial configuration, allowing the base station to have advance knowledge of the UE's capabilities. This preliminary reporting enables optimized beam configuration without requiring continuous complex negotiations, reducing ongoing device complexity while maintaining precision.
Data Source
AI summary
The described techniques relate to improved methods, systems, devices, and apparatuses that support configurations for sidelink beam management. In some cases, a base station may determine sidelink beams for beam sweeping and instruct a user equipment (UE) which sidelink beams to use. The base station may determine the sidelink beams for beam sweeping based on a report sent from the UE. In other cases, the UE may determine transmission sidelink beams for beam sweeping based on the UE capabilities beam input from the receiving UE, or the base station determining which beams to use and allocating resources for the beam sweeping. Additionally or alternatively, the base station may determine a portion of the sidelink beams for beam sweeping and the UE may determine a portion of the sidelink beams to use for beam sweeping in addition to the beams indicated by the base station.