Sidelink Resource Selection Using Partial Sensing Windows
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Solution Overview
Problem
In sidelink communications, user equipments (UEs) operating in a partial sensing mode face high power consumption and increased collision probability due to incomplete channel sensing, affecting battery life and communication reliability.
Innovation Solution
Implementing a partial sensing-resource selection window that covers multiple previous sensing windows, allowing UEs to select resources with a known occupancy state, and configuring resource pools to allow or indicate non-sensing UEs, or adjusting resource selection based on priority levels to reduce collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE operates in full sensing mode to continuously sense channel state, then communication reliability is improved, but power consumption increases significantly
Solution Approach 1:
The patent implements partial sensing mode where the UE performs sensing operations only during specific partial sensing windows rather than continuously. The sensing window is configured to cover only the necessary time period to acquire sufficient channel state information for resource selection, reducing power consumption while maintaining adequate communication reliability through selective sensing at critical moments.
2Use of energy by moving object
If UE operates in partial sensing mode to reduce power consumption, then energy efficiency is improved, but resource collision probability increases
Solution Approach 1:
The patent configures the partial sensing window to start at a specific offset before the resource selection window. This preliminary sensing action allows the UE to acquire channel state information in advance of the actual resource selection moment, enabling more informed resource selection decisions that reduce collision probability while maintaining the energy savings of partial sensing mode.
3Reliability
If sensing window is configured to cover resource selection window, then resource collision is reduced, but sensing time requirement increases
Solution Approach 1:
The patent configures the partial sensing window to start at offset startOffsetBeforeSelection before the resource selection window and set its duration to cover the selection window period. This preliminary action approach allows the UE to perform sensing in advance, reducing resource collision probability while managing sensing time requirements through optimized window configuration rather than requiring the sensing window to extend beyond what is necessary to cover the selection period.
Data Source
AI summary
An electronic device includes a processing circuit, configured as: to determine multiple partial sensing windows separated on a time domain, in the multiple partial sensing windows, a user equipment executing sidelink communication performing sensing with respect to at least some time-frequency resources in a resource pool for use in sidelink communication; and to determine a partial sensing-resource selection window and one or more resource selection windows, where the partial sensing-resource selection window is a time-frequency window defined by multiple earlier partial sensing windows when resource selection is triggered, an occupancy state of time-frequency resources in the partial sensing-resource selection window is known to the user equipment; moreover, the user equipment selects the time-frequency resources in the one or more resource selection windows to execute sidelink transmission, where the partial sensing-resource selection window covers the one or more resource selection windows.