UE Buffer Status Reporting for Direct and Indirect V2X Paths
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently performing signal transmission and reception procedures, particularly in V2X communication scenarios, where direct and indirect paths are involved, leading to inefficiencies in buffer status reporting.
Innovation Solution
A method is introduced where a user equipment (UE) configures an indirect path and separately reports buffer status reports (BSRs) for direct and sidelink paths, excluding specific buffer status related to the indirect path from the sidelink BSR, allowing for precise reporting of buffer status related to first and second destinations or bearers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a UE reports both direct path BSR and sidelink BSR separately, then the buffer status reporting becomes more accurate and efficient, but the device complexity and signaling overhead increase
Solution Approach 1:
The buffer status reporting is segmented into two distinct parts: direct path BSR for data transmitted through the network and sidelink BSR for data transmitted directly between UEs. This segmentation allows the network to accurately determine how much data is available for transmission over each path type, resolving the contradiction by improving reporting accuracy through separation while managing complexity through structured organization of the reporting mechanism.
2Adaptability or versatility
If the UE configures indirect path for V2X communication, then the coverage and connectivity are improved, but the buffer status reporting becomes ambiguous and less efficient
Solution Approach 1:
The patent applies local quality by associating specific buffer status information with specific path types. The sidelink BSR specifically reports buffer status for data intended for sidelink transmission, while direct path BSR reports buffer status for data intended for network transmission. This localized association of buffer status information with path types eliminates ambiguity and improves reporting efficiency while maintaining the adaptability of indirect path configuration for V2X communication.
Data Source
AI summary
In the present disclosure, a method of transmitting a signal by a user equipment (UE) may comprise performing a procedure for configuring an indirect path to a network; and transmitting, to the network, at least one buffer status report (BSR) including a buffer status related to the indirect path, wherein, based on the UE being configured to report both a BSR related to a direct path and a sidelink (SL) BSR related to the indirect path to the network, a specific buffer status related to the indirect path may be excluded from the SL BSR.