Sidelink UE Capability Reporting via Relay Aggregation
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Solution Overview
Problem
Existing wireless communication systems lack efficient methods for User Equipment (UE) to report sidelink UE capability information, which is crucial for optimizing communication in evolving networks like 5G, particularly in scenarios involving UE-to-UE relays and unicast links.
Innovation Solution
A method and apparatus are introduced for a second UE to receive and transmit sidelink UE capability information from/to a UE-to-UE Relay or combine such information for reporting to network nodes, facilitating enhanced communication optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE capability information is reported separately for each UE in sidelink scenarios, then individual UE capabilities are accurately captured, but network node decision-making efficiency deteriorates due to fragmented information
Solution Approach 1:
The patent combines capability information from multiple UEs (including relay UE and remote UE) into a single aggregated capability dataset that is reported to the network node. This merging approach maintains comprehensive capability information while improving decision-making efficiency by presenting unified data rather than fragmented separate reports.
2Measurement precision
If comprehensive UE capability information is collected from multiple UEs, then network optimization accuracy is improved, but information collection complexity increases
Solution Approach 1:
The relay UE acts as an intermediary that collects capability information from both the remote UE and itself, then aggregates and reports the combined information to the network node. This intermediary approach simplifies the information collection process by using the relay UE as a central collection point rather than requiring direct communication between all UEs and the network node.
3Loss of information
If separate capability reporting is used for relay UE and remote UE, then individual capability details are preserved, but signaling overhead increases
Solution Approach 1:
The patent merges capability information from the relay UE and remote UE into a single capability report, reducing the number of separate signaling messages required. The combined report includes both UEs' capability details in one transmission, thereby reducing signaling overhead while preserving individual capability information.
4Productivity
If aggregated capability information is reported to network node, then communication efficiency is improved, but information processing requirements at network node increase
Solution Approach 1:
The relay UE serves as an intermediary that performs initial aggregation and organization of capability information before forwarding to the network node. This pre-processing at the relay UE reduces the processing burden on the network node while maintaining the benefits of aggregated information for improved communication efficiency.
Data Source
AI summary
A method and device are disclosed from the perspective of a second User Equipment (UE) to report sidelink capability information. In one embodiment, the method includes the second UE receiving, from a UE-to-UE Relay, a first sidelink UE capability information of a first UE and a second sidelink UE capability information of the UE-to-UE Relay or receives, from the UE-to-UE Relay, a combined sidelink UE capability information, wherein the combined sidelink UE capability information is derived from the first sidelink UE capability information and the second sidelink UE capability information. The method further includes the second UE transmits the first sidelink UE capability information and the second sidelink UE capability information to a network node or transmits the combined sidelink UE capability information to the network node.