Sidelink Coordination Aggregation for Low-Power UE Resource Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently coordinating sidelink transmissions among user equipment (UEs) due to increased power consumption, hidden node problems, and reduced reliability and latency, particularly for UEs with limited battery life and complex sensing requirements.
Innovation Solution
Implementing sidelink network assisted inter-UE coordination through a base station (BS) that aggregates and transmits sidelink inter-UE coordination information to UEs, providing resource selection assistance to minimize collisions and optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs perform complex sensing to coordinate sidelink transmissions, then collision probability is reduced, but power consumption increases
Solution Approach 1:
The base station acts as an intermediary that collects sensing information from multiple UEs and processes it centrally. Instead of each UE performing complex sensing independently, the BS aggregates the sensing data and generates coordinated resource allocation information, reducing the sensing burden and power consumption at the UE level while maintaining collision avoidance through centralized processing.
2Device complexity
If UEs independently select sidelink resources without coordination, then device complexity is reduced, but reliability and latency increase
Solution Approach 1:
The base station serves as a mediator that enables coordinated resource allocation without requiring complex peer-to-peer coordination between UEs. The BS receives resource selection information from multiple UEs, processes it centrally, and provides coordinated resource allocation decisions, thereby maintaining low UE complexity while improving transmission reliability through network-assisted coordination.
3Measurement precision
If UEs with limited battery life perform extensive sensing, then resource allocation accuracy is improved, but device durability decreases
Solution Approach 1:
The base station acts as an intermediary that performs the computationally intensive sensing and resource allocation analysis centrally. UEs with limited battery life can offload their sensing data to the BS, which processes the information and provides accurate resource allocation recommendations, thereby maintaining high resource allocation accuracy while preserving UE battery life by avoiding extensive local sensing operations.
4Use of energy by moving object
If centralized coordination is implemented through base station, then power efficiency is improved, but device complexity increases
Solution Approach 1:
The base station serves as a centralized intermediary that handles the complexity of coordination tasks. By moving the sensing, processing, and resource allocation decision-making to the BS, the system achieves improved power efficiency at the UE level. The BS's enhanced processing capabilities allow it to handle the coordination complexity centrally, while UEs benefit from simplified operations and reduced power consumption.
Data Source
AI summary
Methods and apparatuses for sidelink (SL) network assisted inter-user equipment (UE) coordination in a wireless communication system. A method for operating a UE includes receiving, on a Uu interface, a message associated with SL inter-UE coordination information, determining SL resources for a SL transmission based on the SL inter-UE coordination information, selecting the SL resources for the SL transmission, and transmitting on a SL interface using the SL resources. A method of operating a BS includes receiving, on a Uu interface, a message including first SL inter-UE coordination information from a first UE, determining a second UE as a recipient for the first SL inter-UE coordination information, generating second SL inter-UE coordination information from aggregation of the first SL inter-UE coordination information and other SL inter-UE coordination information, and transmitting the second SL inter-UE coordination information to the second UE.