Sidelink Paging Resource Sensing to Prevent Transmission Collisions
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Solution Overview
Problem
In sidelink communication systems, collisions occur when paging messages and wake-up signals are transmitted in preconfigured resources without considering the current resource occupancy state, leading to deteriorated energy efficiency and reception performance.
Innovation Solution
A method for transmitting user equipment (UE) involves receiving window configuration information, performing resource sensing operations in separate windows (A, B, and C) to select transmission resources for paging and data, allowing for independent configuration based on data size, latency, and priority, with early termination and reconfiguration options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If paging messages are transmitted in preconfigured sidelink resources without considering current resource occupancy state, then transmission simplicity is maintained, but transmission collisions occur and energy efficiency deteriorates
Solution Approach 1:
The transmitting UE performs resource sensing operations in advance within window A and window B before transmitting the paging message. This preliminary resource detection identifies occupied resources, allowing the UE to select unoccupied resources for paging transmission, thereby avoiding collisions and improving energy efficiency while maintaining operational simplicity
Solution Approach 2:
The patent introduces dynamic resource selection by dividing the sidelink resources into multiple windows (A, B, and C) with different functions. Window A is for sensing paging resources, window B is for sensing data resources, and window C is for actual transmission. This dynamic structure allows the system to adapt to current resource occupancy states while maintaining a structured and manageable transmission process
2Reliability
If resource sensing operations are performed in separate windows for paging and data transmission, then transmission collision prevention is improved, but system complexity increases
Solution Approach 1:
The patent segments the resource sensing and selection process into distinct windows: window A for sensing paging message resources, window B for sensing data transmission resources, and window C for actual transmission. This segmentation prevents collisions by separating the sensing of different resource types into independent time intervals, while the structured window-based approach keeps the complexity manageable through clear procedural organization
Solution Approach 2:
The patent introduces window configuration information as an intermediary mechanism that coordinates the resource sensing and selection process. The base station provides window configuration information that defines the time intervals and relationships between windows A, B, and C, mediating the complexity by providing a standardized framework that both transmitting and receiving UEs follow
3Adaptability or versatility
If window configuration information is provided by base station, then resource allocation flexibility is improved, but signaling overhead increases
Solution Approach 1:
The window configuration information serves multiple functions: it defines the time intervals for resource sensing windows, establishes the relationships between different windows (A, B, and C), and provides the framework for collision-free resource selection. This multi-functional configuration reduces the need for separate signaling for each parameter, thereby providing resource allocation flexibility while minimizing signaling overhead
Data Source
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AI summary
A method and a device for paging in sidelink communication are disclosed. An operating method of a transmitting terminal comprises the steps of: receiving window configuration information from a base station; performing a first resource sensing operation for transmission of a paging message within A window indicated by the window configuration information to determine P candidate resources; performing an operation of selecting a P transmission resource from among the P candidate resources within B window indicated by the window configuration information, and a second resource sensing operation for transmission of data associated with the paging message; and transmitting the paging message to a receiving terminal by using the P transmission resource.