Sidelink Multiple-Slot Unit Structure for Resource Efficiency
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Solution Overview
Problem
In sidelink communication, higher numerologies result in inefficient use of network resources due to significant time gaps for transmission-reception switching, which reduces the proportion of time resources available for control and data communication.
Innovation Solution
Implementing a multiple-slot unit structure that includes a first time interval for automatic gain control, a second time interval for sidelink control or data communication, and a third time interval for transmission-reception switching, allowing for a larger proportion of time resources to be used for communication rather than switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a time gap is provided for transmission-reception switching in each slot, then the device can perform Tx/Rx switching, but the proportion of time resources used for communication decreases
Solution Approach 1:
The patent merges multiple slots into a slot group structure where the time gap for Tx/Rx switching is provided only once at the boundary of the slot group rather than in every slot. This combining approach maintains the switching capability while reducing the total time lost to gaps, thereby increasing the proportion of time resources available for actual communication.
2Ease of operation
If multiple symbols are used for time gap in higher numerologies, then transmission-reception switching can be performed, but network resource efficiency decreases
Solution Approach 1:
The patent changes the parameter of time gap allocation from a per-slot basis to a per-slot-group basis. By adjusting this structural parameter, the system maintains adequate Tx/Rx switching time for higher numerologies while significantly reducing the overall proportion of time resources consumed by gaps, thereby improving network resource efficiency.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a multiple-slot unit structure that is to be used for sidelink communication, the multiple-slot unit structure having multiple contiguous slots that include, in sequence, a first time interval for automatic gain control, a second time interval for at least one of sidelink control communication or sidelink data communication, and a third time interval providing a time gap for transmission-reception switching. The UE may communicate, on a sidelink, in one or more multiple-slot units that are in accordance with the multiple-slot unit structure. Numerous other aspects are described.