Shared Carrier Scheduling for V2V Handover
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Solution Overview
Problem
In the context of V2V/V2I communication, frequent micro cell changes due to vehicle movement lead to service interruptions, increased delays, and high signaling consumption in LTE-based Internet of Vehicles networks, as vehicles frequently switch between micro network nodes with limited coverage areas.
Innovation Solution
A network node data scheduling method that allows user equipment to determine and use shared carriers across micro network nodes, maintaining continuous service by switching between first and second shared carriers during intra-group and inter-group handovers, thereby reducing service interruptions and signaling consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If micro cell changes are performed frequently due to vehicle movement, then network coverage is maintained, but service interruptions increase and delays are increased
Solution Approach 1:
The patent pre-configures multiple shared carriers (first shared carrier and second shared carrier) for different micro network node groups before handover occurs. When a vehicle approaches the boundary between micro network nodes, the target micro network node already has the necessary carrier configuration ready, enabling seamless switching without service interruption. This preliminary preparation of carrier resources eliminates the need for frequent configuration updates during handover.
Solution Approach 2:
The patent implements a universal shared carrier mechanism where multiple micro network nodes within the same group share common carriers. The first shared carrier is used for vehicles in the first micro network node group, and the second shared carrier is used for vehicles in the second micro network node group. This multi-functionality allows a single carrier to serve multiple nodes, reducing the need for frequent carrier reconfiguration during handover between nodes within the same group.
2Reliability
If micro cell changes are performed frequently due to vehicle movement, then network coverage is maintained, but signaling consumption increases
Solution Approach 1:
The patent implements a universal shared carrier mechanism where multiple micro network nodes within the same group share common carriers. The first shared carrier is used for vehicles in the first micro network node group, and the second shared carrier is used for vehicles in the second micro network node group. This multi-functionality allows a single carrier to serve multiple nodes, reducing the need for frequent carrier reconfiguration during handover between nodes within the same group.
Solution Approach 2:
The patent pre-configures multiple shared carriers (first shared carrier and second shared carrier) for different micro network node groups before handover occurs. When a vehicle approaches the boundary between micro network nodes, the target micro network node already has the necessary carrier configuration ready, enabling seamless switching without service interruption. This preliminary preparation of carrier resources eliminates the need for frequent configuration updates during handover.
3Loss of time
If shared carriers are used across micro network nodes, then service continuity is improved, but device complexity increases
Solution Approach 1:
The patent segments the network into distinct micro network node groups (first group and second group), with each group having its own dedicated shared carrier (first shared carrier and second shared carrier). This segmentation simplifies the configuration management by creating clear boundaries and dedicated resources for each group, making it easier to manage complexity while maintaining service continuity across group boundaries.
Data Source
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AI summary
The present invention provides a network node data scheduling method, an apparatus, and a system. The method includes the following steps: obtaining, by user equipment, first system information of a current serving micro network node (101), determining, by the user equipment, a first shared carrier of a serving micro network node group according to the first system information (102), and transmitting, by the user equipment, service data according to the first system information by using the first shared carrier (103); when it is determined that a preset cell handover condition is met, handing over, by the user equipment, to a target cell, obtaining second system information of a target micro network node corresponding to the target cell, and transmitting the service data in the target cell according to the second system information by using a second shared carrier of a micro network node group to which the target micro network node belongs (104). By applying the present invention, during intra-group cell handover, the first shared carrier continues to be used, a service is not interrupted, and a delay is reduced. During inter-group handover, a service is interrupted only when the first shared carrier is switched to the second shared carrier. This effectively reduces service interruption frequency, a service delay, and signaling consumption.