Sidelink Multi-Slot Transmission Aligned With DRX Active Time
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing sidelink transmissions, particularly in unlicensed/shared spectra, leading to suboptimal resource utilization and increased interference.
Innovation Solution
Implementing multi-consecutive slots transmission (MCSt) with discontinuous reception (DRX) to optimize sidelink resource allocation, allowing for efficient use of available resources and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-consecutive slots transmission is implemented in unlicensed/shared spectra, then resource utilization is improved, but interference management complexity increases
Solution Approach 1:
The patent implements periodic sensing intervals and measurement occasions where UEs periodically sense the channel and measure interference levels. This periodic action allows the system to maintain high resource utilization through multi-slot transmissions while managing interference complexity through structured, repeating measurement cycles that identify interference patterns and enable coordinated resource allocation across multiple slots.
Solution Approach 2:
The patent establishes feedback mechanisms where UEs report channel state information, interference measurements, and transmission quality metrics back to the network. This feedback enables the network to dynamically adjust multi-slot transmission parameters, resolve interference issues, and optimize resource allocation while maintaining high productivity through consecutive slot utilization.
2Use of energy by moving object
If discontinuous reception is used during multi-consecutive slots transmission, then energy consumption is reduced, but transmission reliability may deteriorate
Solution Approach 1:
The patent segments the multi-slot transmission into distinct phases with different DRX configurations. During initial slots, UEs maintain continuous reception for reliable establishment and channel estimation. In subsequent slots, DRX is activated with extended idle periods to reduce energy consumption. This segmentation allows the system to achieve both energy efficiency and transmission reliability by applying different reception strategies to different portions of the multi-slot transmission.
Solution Approach 2:
The patent performs preliminary channel estimation, synchronization, and link establishment during the initial slots before activating DRX mode. This preliminary action ensures that critical transmission parameters are established and verified while UEs are still in continuous reception mode, thereby maintaining reliability. Once the link is established, DRX can be safely activated to reduce energy consumption without compromising the already-secured transmission reliability.
Data Source
AI summary
A wireless device initializes a candidate resource set, comprising one or more first multi-slot resources of a sidelink resource pool, for a plurality of sidelink transmissions to at least one destination wireless device. Each of the one or more first multi-slot resources comprises a number of consecutive slots, and the number of consecutive slots is larger than 1. The wireless device determines to include, in the candidate resource set, a second multi-slot resource of the sidelink resource pool. The second multi-slot resource comprises the number of consecutive slots within a sidelink discontinuous reception (DRX) active time of the at least one destination wireless device. The wireless device transmits, to the at least one destination wireless device, the plurality of sidelink transmissions via the second multi-slot resource.