Sidelink Radio Configuration for Cross-Cell Interference Control
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Solution Overview
Problem
Sidelink communications can cause interference when devices under different network coverage use the same set of radio resources, spanning multiple cells or geographical areas.
Innovation Solution
A method and device for distributing and receiving a radio configuration for sidelink communications that includes transmitting a subset of the configuration along with geographical and/or temporal limitations, allowing devices to operate within specified areas and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the same set of radio resources is used for sidelink communications across multiple cells or geographical areas, then the communication range is expanded beyond base station coverage, but interference occurs between devices under different network coverage
Solution Approach 1:
The patent segments the radio configuration by distributing different configurations to different devices based on their geographical location and network coverage. Each device receives a tailored radio configuration from its local base station, dividing the overall sidelink resource space into non-conflicting segments across different cells or areas.
Solution Approach 2:
The patent implements local quality by allowing each geographical area or cell to have its own specific radio configuration parameters. Devices receive radio configurations optimized for their local area, with parameters such as frequency resources, time resources, and power settings tailored to local conditions, thereby avoiding interference with neighboring areas.
2Adaptability or versatility
If devices outside base station coverage use pre-configured radio resources, then sidelink communications can occur without network coverage, but interference may occur with devices under network coverage using different resource allocations
Solution Approach 1:
The patent applies preliminary action by pre-configuring radio parameters in devices before they lose network coverage. When a device is still under base station coverage, it receives and stores the radio configuration in advance. This pre-provisioning ensures that when coverage is lost, the device can immediately use the pre-configured parameters without causing or experiencing interference.
Solution Approach 2:
The patent uses the base station as an intermediary to mediate resource allocation between covered and uncovered devices. The base station provides radio configurations to devices that act as a reference or anchor, ensuring that even when devices go out of coverage, their autonomous resource selection is coordinated with the network's overall resource plan, preventing conflicts.
Data Source
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AI summary
A technique for distributing, receiving and transmitting a radio configuration for sidelink, SL, communications (502) that extend beyond an area (604) covered by one or more base stations (504) is described. As to one method aspect of the technique, a method of distributing the radio configuration for SL communications (502) comprises or initiates a step of receiving (302) the radio configuration for the SL communications (502) from at least one of the one or more base stations (504) and local memory. The method further comprises or initiates a step of transmitting (304) at least one message in the SL communications (502), which is indicative of at least a subset of the radio configuration and a geographical and/or temporal limitation (602) thereof.