Sidelink Transmission Parameter Tuning for Unlicensed-Band Access
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Solution Overview
Problem
The increasing demand for mobile broadband communication and the need for enhanced reliability and low latency in wireless communication systems, particularly in sidelink communication, necessitates efficient resource allocation and channel access mechanisms in shared spectra to manage congestion and interference.
Innovation Solution
A method and device for performing sidelink communication by obtaining information about resource blocks, adjusting transmission parameters based on channel sensing and thresholds, and performing channel access procedures in shared spectra to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel sensing is performed for resource block set in shared spectrum, then reliability of sidelink communication is improved, but transmission latency increases
Solution Approach 1:
The patent applies preliminary action by performing channel sensing before the actual sidelink transmission to determine whether the channel is busy or idle. This advance channel assessment allows the UE to prepare transmission parameters and select appropriate resource blocks in advance, reducing the latency impact while maintaining reliability through proper channel occupancy verification.
2Productivity
If transmission parameter is adjusted based on channel sensing result, then resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by adjusting transmission parameters such as modulation and coding scheme, transmission power, and selected resource blocks based on the channel sensing results. The UE modifies these parameters dynamically according to the detected channel conditions to optimize resource utilization efficiency while managing the complexity through standardized parameter adjustment procedures.
3Adaptability or versatility
If channel access procedure is performed in shared spectrum, then adaptability to unlicensed band is improved, but transmission reliability deteriorates due to congestion and interference
Solution Approach 1:
The patent applies feedback by incorporating channel sensing results into the transmission parameter adjustment process. The UE continuously monitors the shared spectrum channel conditions and uses this feedback information to adapt transmission parameters, select appropriate resource blocks, and determine transmission timing, thereby maintaining reliability despite the congested and interfered unlicensed band environment.
Data Source
AI summary
A method by which a first device performs wireless communication and an apparatus supporting the method are provided. The method may comprise the steps of: acquiring information related to a resource block (RB) set in which a channel access procedure is performed in a shared spectrum, acquiring a threshold for adjusting a transmission parameter; performing channel sensing on the RB set; determining the transmission parameter on the basis of a result of the channel sensing for the RB set and the threshold; and performing sidelink (SL) communication with a second device on the basis of the transmission parameter.