Sidelink Inter-UE Coordination for Beam Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, particularly in sidelink (SL) communications, existing technologies face challenges in beam management and resource selection, leading to issues such as half-duplex conflicts and inadequate resource selection due to the lack of consideration for receiving UE conditions, especially in frequency range 2 (FR2) transmissions.
Innovation Solution
The implementation of an inter-user equipment (IUE) coordination (IUC) scheme that includes a message from the receiving UE to the transmitting UE, providing sensing results, beam alignment information, and transmission mode details to assist in selecting suitable resources, thereby addressing the half-duplex issue and ensuring efficient resource selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autonomous resource selection is performed without receiving UE feedback, then resource selection speed is improved, but resource selection accuracy deteriorates due to lack of receiving UE conditions information
Solution Approach 1:
The receiving UE provides feedback information to the transmitting UE about its reception conditions, including beam alignment status and preferred resource indications. This feedback loop enables the transmitting UE to make more accurate resource selections while maintaining efficient autonomous operation, resolving the contradiction between selection speed and accuracy.
Solution Approach 2:
The receiving UE performs preliminary assessments of its reception conditions and prepares feedback information in advance. This allows the transmitting UE to have access to receiving UE conditions information before making resource selection decisions, improving accuracy without significantly delaying the selection process.
2Measurement precision
If IUC message exchange is implemented, then resource selection accuracy is improved, but communication overhead increases
Solution Approach 1:
The IUC message exchange is implemented selectively based on local conditions - specifically when beam management and resource selection coordination is needed. The feedback information is tailored to the specific receiving UE's conditions and the particular transmission scenario, providing necessary information without unnecessary overhead.
3Reliability
If beam alignment information is considered in resource selection, then transmission reliability is improved, but resource selection complexity increases
Solution Approach 1:
The receiving UE acts as an intermediary that consolidates beam alignment information and transmission conditions into simplified feedback messages. This mediator approach allows the transmitting UE to consider beam alignment information for improved reliability without directly managing the complexity of beam management, as the receiving UE has already processed and presented the information in a usable format.
Data Source
AI summary
A user equipment (UE), a base station, a baseband processor or other network device can operate to perform an inter-UE coordination (IUC) operation for a sidelink (SL) communication by processing an IUC message that comprises at least one of: receiving UE sensing results associated with directional sensing or beam alignment SL control channel/sidelink data channel transmission information. The SL communication can then be transmitted based on resources selected in resource selection from the IUC.