Sidelink Timing Advance Segmentation for Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing timing advances for sidelink communications, leading to interference and decoding issues due to misaligned timing in UL and SL transmissions.
Innovation Solution
The implementation of a method where a transmitter UE applies a first and second timing advance (TA) for sidelink transmissions, allowing for precise timing adjustments in sidelink communications, enabling correct decoding and reducing interference by aligning UL and SL signal timings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single timing advance is applied to sidelink transmissions, then the system complexity is reduced, but timing alignment accuracy deteriorates leading to interference and decoding issues
Solution Approach 1:
The patent segments the timing advance parameter into multiple distinct TAs (first TA for PSCCH, second TA for PSSCH). This segmentation allows each transmission type to have its own optimized timing adjustment, improving timing alignment accuracy and reducing interference while maintaining manageable system complexity through structured parameter separation.
2Ease of operation
If timing advance is not adjusted for sidelink transmissions, then the transmission process is simplified, but timing misalignment occurs causing interference and decoding failures
Solution Approach 1:
The patent applies parameter changes by introducing multiple timing advance values (first TA and second TA) to adjust the timing of different sidelink transmissions. This parameter adjustment aligns the timings of UL and SL transmissions, eliminating interference and decoding issues while maintaining operational simplicity through automated parameter application.
3Measurement precision
If multiple timing advances are applied to different sidelink transmissions, then timing alignment accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent segments timing management into distinct components with specific TAs for specific channels (PSCCH and PSSCH). This segmentation improves timing alignment accuracy for each transmission type while managing complexity through clear separation of timing parameters and their application to different transmission layers.
Solution Approach 2:
The patent creates a universal timing management framework where multiple TAs are applied systematically across different sidelink transmissions. This multi-functional approach allows the system to handle various transmission types with appropriate timing adjustments while maintaining a unified management structure that prevents excessive complexity.
Data Source
AI summary
Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for determining timing advances (TAs) for use in sidelink (SL) communications. A method that may be performed by a transceiver (TX) user equipment (UE) includes applying a first TA when transmitting at least a first SL transmission to a receiver (RX) UE and applying a second TA when transmitting at least a second SL transmission to the RX UE.