V2X Handover Resource Configuration for Mobile Station Switching
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Solution Overview
Problem
In V2X communication, ensuring smooth handover between different network APs for fast-moving vehicles is challenging due to longer transmission interruption delays and inefficient resource utilization, particularly in scenarios with limited network coverage.
Innovation Solution
A resource configuration method that involves determining and coordinating handover resource pool configuration information between network APs in advance, allowing vehicles to use pre-configured handover resources during the handover process, thereby reducing interruption time and ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional handover mechanism is used, then handover can be performed, but transmission interruption delay is long
Solution Approach 1:
The patent applies preliminary action by pre-configuring handover resources (time-frequency resources, power parameters, reference signal parameters) at the source network AP before handover occurs. The mobile station receives and stores these handover resources in advance, enabling immediate switching to the target network AP without resource negotiation delays, thus reducing transmission interruption delay while ensuring communication continuity.
2Reliability
If preconfigured resources are used in V2X communication, then communication can occur without network coverage, but resource utilization efficiency is reduced
Solution Approach 1:
The patent implements dynamics by making the handover resource configuration adaptive rather than static. The source network AP dynamically determines handover resources based on current network conditions and mobile station characteristics, and these resources are only activated when handover is actually needed. This allows the system to maintain communication availability through pre-configured resources while improving resource utilization efficiency by avoiding permanent allocation of unused resources.
3Speed
If handover resources are determined in advance, then handover speed is improved, but resource coordination complexity increases
Solution Approach 1:
The patent applies the extraction principle by separating the handover resource determination function from the target network AP and concentrating it at the source network AP. The source network AP extracts and determines all necessary handover resources (time-frequency resources, power parameters, reference signal parameters) before handover, then provides them to the mobile station. This simplifies the overall coordination complexity by eliminating the need for complex bidirectional resource negotiation between source and target network APs, while maintaining fast handover execution speed.
Data Source
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AI summary
A resource configuration method for switching, comprising: a first network access point determining configuration information for a switching resource pool with a second network access point; the first network access point sending the configuration information for the switching resource pool to a mobile station; the first network access point sending first instruction information to the mobile station, the first instruction information instructing the mobile station to communicate, using a switching resource from the switching resource pool, with at least one of the first network access point, the second network access point, and another mobile station. An embodiment of the present invention uses a property of predictable direction of a motion of the mobile station and introduces a switching resource concept to negotiate a switching resource between network access points in advance. When a mobile station requires switching, the switching resource can be used for a switching process, thereby reducing a delay time of the switching process.