Sidelink Beam Management for Direction Determination
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Solution Overview
Problem
Current wireless communication technologies, particularly in 5G New Radio (NR) networks, face challenges in effectively managing sidelink resources for direction determination between User Equipments (UEs), which is crucial for accurate ranging-based applications such as determining distance and direction between vehicles, and this is not adequately supported by existing mechanisms.
Innovation Solution
A method where a User Equipment (UE) establishes a sidelink connection using a resource set configured by the NR V2X Control Function, which includes Beam Management parameters for directional transmission beams, and reports Quality of Service (QoS) values to optimize beam selection and improve direction determination between UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam management parameters are configured for directional transmission, then direction determination accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the beam management process into distinct phases: initial beam establishment using broader beams, followed by refinement using narrower beams. The resource pool is divided into multiple beams with different beam IDs, allowing systematic exploration and refinement of directional channels without requiring all beams to be managed simultaneously, thus reducing complexity while maintaining accuracy.
Solution Approach 2:
The patent implements preliminary beam establishment before precise direction determination. Initial beams are configured to establish basic connectivity, and only after this preliminary phase is complete does the system proceed to refine beam directions using QoS feedback. This staged approach prevents the system from being overwhelmed by the full complexity of beam management from the outset.
2Reliability
If multiple directional beams are configured for SL communication, then communication reliability is improved, but resource management complexity increases
Solution Approach 1:
The patent implements dynamic beam selection where the system adapts beam configurations based on QoS feedback from actual communication performance. Beams are not statically assigned but dynamically selected and refined based on measured channel conditions and communication outcomes, allowing the system to maintain reliability while adapting to changing conditions without pre-configuring all possible beam combinations.
Solution Approach 2:
The patent incorporates QoS feedback loops where communication performance on each beam is measured and reported back to the controlling entity. This feedback drives iterative refinement of beam selections, allowing the system to identify and eliminate poor beams while concentrating resources on effective directional channels, thereby managing complexity through performance-driven pruning.
3Measurement precision
If QoS reporting is implemented for beam optimization, then direction determination accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements partial QoS reporting where not all beam parameters are reported in every message. Instead of exhaustive reporting, the system reports only the critical QoS metrics needed for beam refinement decisions, such as successful communication indicators or basic quality metrics, achieving sufficient accuracy while minimizing signaling overhead through selective information exchange.
Data Source
AI summary
A method by a User Equipment (UE) for sidelink (SL) communication with another UE is disclosed. The method comprises establishing a first SL connection from the UE to the another UE using a first resource set, the first resource set including an identifier (ID) of the first resource set, parameters for configuring a first Vehicle to Everything (V2X) Resource Pool, and Beam Management (BM) parameters associated with the first V2X Resource Pool for enabling a first set of directional transmission beams; receiving, from the another UE, a Quality of Service (QoS) value associated with a first beam of the first set of directional transmission beams used for establishing the first SL connection; and reporting, to a New Radio (NR) V2X Control Function, the ID of the first resource set, a first beam index identifying the first beam, and the QoS value associated with the first beam.