Sidelink Resource Coordination Signaling for Low-Power UE Selection
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Solution Overview
Problem
The monitoring procedure for resource (re)selection during a sensing window in sidelink communication requires reception and decoding of sidelink control information (SCI), increasing processing complexity and power consumption for user equipment (UE) and necessitating receive circuitry even for one-way communication.
Innovation Solution
Configuration and signaling of sidelink (SL) resources for inter-UE coordination, which includes resource selection assistance information exchange between UEs to reduce unnecessary reception and decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If autonomous resource selection is used in release 15, then resource allocation automation is improved, but resource collision and interference increase
Solution Approach 1:
The patent introduces a coordination message mechanism as an intermediary between autonomous UEs. This mediator enables UEs to exchange resource selection information and coordinate their choices, reducing collisions while preserving autonomous operation. The coordination message acts as a communication channel that facilitates cooperative resource selection without centralized control.
Solution Approach 2:
The patent implements feedback through coordination messages that carry resource selection information between UES. This feedback loop allows UES to adjust their resource selection based on information received from other UES, enabling adaptive resource allocation that reduces interference while maintaining automation.
2Reliability
If coordination message is introduced to reduce resource collision, then resource collision and interference are reduced, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential coordination information needed for resource selection into the coordination message, rather than transmitting complete resource allocation data. This selective extraction reduces signaling overhead while maintaining the collision reduction benefit.
Solution Approach 2:
The coordination message transmits partial resource selection information rather than complete information. This partial action approach provides sufficient coordination to reduce collisions without the overhead of full resource allocation signaling.
3Productivity
If coordination message is introduced to enable inter-UE coordination, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent enables UES to autonomously generate and process coordination messages based on their own resource selection state. Each UE independently manages its coordination messaging without requiring complex centralized control or sophisticated inter-UE negotiation protocols, thus improving efficiency while limiting complexity growth.
Data Source
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AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method of operating a user equipment (UE) is provided. The method includes receiving a configuration message to enable inter-UE co-ordination for a sidelink (SL) resource pool, determining a target UE for a SL transmission, and transmitting, to the target UE, a signal to activate or trigger transmission of inter-UE co-ordination information. The method further includes receiving the inter-UE co-ordination information, determining a set of candidate SL resources based on the inter-UE co-ordination information, selecting a SL resource within the determined set, and transmitting a SL channel on the SL resource.