Sidelink Resource Coordination for Low-Conflict UE Positioning
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Solution Overview
Problem
Traditional BS-centric cellular networks face limitations in supporting high data rate capabilities and proximity services, leading to significant power consumption in UE monitoring and inefficient resource allocation in sidelink communications.
Innovation Solution
Implementing inter-UE coordination (IUC) for sidelink positioning reference signal (SL-PRS) to optimize resource allocation and minimize conflicts, using SL-PRS IUC information for recommending or reserving resources, detecting conflicts, and suggesting configurations to enhance UE communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional BS-centric cellular networks are used for sidelink communications, then network control and management are simplified, but resource allocation efficiency deteriorates and power consumption increases
Solution Approach 1:
The patent implements autonomous resource selection where UEs independently determine and select sidelink resources without BS intervention. The transmitting UE autonomously performs sensing, identifies available resources, and selects transmission resources based on predefined rules and criteria, enabling self-service operation that improves resource allocation efficiency while reducing network control complexity
Solution Approach 2:
The patent employs sensing mechanisms where UEs continuously monitor the sidelink channel for resource usage by other devices. This feedback loop allows transmitting UEs to identify occupied resources and select alternative available resources, creating an efficient resource allocation system that operates autonomously without BS control
2Device complexity
If traditional BS-centric cellular networks are used for sidelink communications, then network infrastructure requirements are reduced, but power consumption in UE monitoring deteriorates
Solution Approach 1:
The patent implements periodic sensing where UEs monitor the sidelink channel at specific intervals rather than continuously. The transmitting UE performs sensing in predefined sensing windows and selects resources based on periodic observations, reducing power consumption while maintaining effective resource allocation
Solution Approach 2:
The patent requires UEs to perform sensing and resource selection in advance before actual sidelink transmission. By identifying and reserving resources beforehand through preliminary sensing actions, UEs avoid the need for continuous monitoring during transmission, significantly reducing power consumption
3Productivity
If autonomous resource selection is implemented in sidelink communications, then resource allocation efficiency improves, but resource conflicts increase
Solution Approach 1:
The patent implements a sensing-based resource selection mechanism where transmitting UEs perform preliminary monitoring of the sidelink channel before resource selection. UEs identify resources already occupied by other transmissions and exclude them from selection, thereby reducing resource conflicts while maintaining autonomous resource allocation efficiency
Solution Approach 2:
The patent employs continuous sensing feedback where UEs monitor the sidelink channel for resource usage patterns. This feedback mechanism allows UEs to adapt their resource selection based on observed channel conditions and other UE transmissions, reducing resource conflicts through informed autonomous decision-making
4Reliability
If SL-PRS IUC coordination is implemented, then communication robustness improves, but device complexity increases
Solution Approach 1:
The patent implements SL-PRS IUC coordination by exchanging specific coordination information parameters between UEs. The transmitting UE includes IUC indication fields and resource recommendation information in its messages, allowing the receiving UE to adjust its resource selection based on coordinated parameters, improving communication robustness through structured parameter exchange
Solution Approach 2:
The patent uses coordination information messages as an intermediary mechanism between transmitting and receiving UEs. These messages carry IUC indications and resource recommendations that mediate the resource selection process, enabling coordinated resource allocation that improves communication robustness while maintaining manageable device complexity through standardized message formats
Data Source
AI summary
The present disclosure relates to managing sidelink communications between a first wireless communication device and a second communication device. The second wireless communication device receives coordination information for sidelink positioning among a plurality of wireless communication devices from the first wireless communication device. The second wireless communication device determines at least one resource for transmitting sidelink-related data. The second wireless communication device transmits the sidelink-related data using the at least one resource to the first wireless communication device or at least one other wireless communication device.