Edge Node Resource Coordination for V2X Coverage Boundaries
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Solution Overview
Problem
In cooperative vehicle-infrastructure communication systems, resource collisions occur when vehicles move between coverage areas of a cellular network, leading to potential interruptions in road safety applications due to the lack of effective resource coordination mechanisms.
Innovation Solution
A method and apparatus for transmitting and broadcasting resource information, where nodes within and outside a base station's coverage area receive interference information to determine resource access conditions and coordinate resource usage, ensuring seamless communication by adjusting and broadcasting resource access information to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource allocation is executed by cellular network in coverage area and coordinated by distributed nodes outside coverage area, then resource coordination can be achieved within respective areas, but resource collision occurs when vehicles move between coverage areas
Solution Approach 1:
The patent merges the resource allocation functions of cellular network (centralized) and distributed nodes (decentralized) by introducing a unified resource coordination mechanism. Edge nodes in coverage area act as intermediaries that receive resource allocation from cellular network and propagate it to nodes outside coverage area, combining both centralized control and distributed coordination into a single integrated system that prevents resource collision during mobility.
Solution Approach 2:
The patent introduces edge nodes as intermediary entities between cellular network and distributed nodes outside coverage area. These edge nodes receive resource allocation information from cellular network and broadcast it to external nodes, serving as a mediator that bridges the gap between centralized and distributed resource management systems, thereby preventing resource collision when vehicles move between coverage areas.
2Speed
If nodes outside coverage area use distributed resource coordination, then autonomy and response speed are improved, but resource collision with nodes in coverage area cannot be avoided
Solution Approach 1:
The patent implements preliminary action by having edge nodes in coverage area pre-fetch resource allocation information from cellular network before vehicles arrive at coverage boundaries. This advance preparation allows resource coordination messages to be ready for immediate propagation to nodes outside coverage area, maintaining fast distributed response while ensuring resource collision avoidance through pre-coordinated resource allocation.
Solution Approach 2:
The edge nodes serve as intermediaries that receive resource allocation from cellular network and propagate it to distributed nodes outside coverage area. This intermediary mechanism allows distributed nodes to maintain autonomous fast response while being guided by centralized resource allocation, preventing resource collision without sacrificing the speed benefits of distributed coordination.
3Loss of information
If resource information is broadcasted by edge nodes, then nodes outside coverage area can acquire resource usage information, but additional communication overhead is introduced
Solution Approach 1:
The patent makes edge nodes multi-functional by assigning them dual roles: they function as regular nodes within cellular coverage while simultaneously serving as resource information broadcasters for nodes outside coverage. This universal functionality allows a single node type to perform multiple tasks, reducing the need for separate specialized infrastructure and minimizing additional communication overhead while ensuring resource information availability.
Data Source
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AI summary
Disclosed are a method and apparatus for sending and broadcasting resource information, the method comprising: determining a resource used by a second-type node and a resource used by a first-type node, and determining the first-type node receiving a resource coordination message, wherein the first-type node is a node located within a base station signal coverage range, and the second-type node is a node located outside of the base station signal coverage range; and sending the resource coordination message to the determined first-type node, and instructing the first-type node to broadcast the contents of the resource coordination message, wherein the resource coordination message carries resource information about the first-type node and the second-type node. By means of the present application, resource continuity in the process of a node moving on a network coverage edge is guaranteed, resource collision is reduced, and the utilization rate of system resources is improved.