Network-Side Resource Allocation for V2X Collision Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing timeslot resource allocation algorithm in V2X systems is performed solely by node devices, leading to a high probability of collisions, which degrades the security and reliability of the communication system.
Innovation Solution
A network-side device allocates and reallocates sub-frame resources for node devices, determining colliding nodes based on interference and positional information to centrally manage resource allocation, thereby reducing collisions and improving system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If node devices autonomously allocate timeslot resources through interaction, then device complexity is reduced and ease of operation is improved, but collision probability increases and system reliability deteriorates
Solution Approach 1:
The patent introduces a network side device as an intermediary to coordinate timeslot resource allocation. Instead of node devices autonomously selecting timeslots (which causes collisions), the network side device receives resource requests, determines available timeslots, and allocates them centrally. This mediator approach resolves the contradiction by maintaining ease of operation for node devices while significantly improving system reliability through centralized coordination that eliminates collisions.
2Reliability
If centralized resource allocation by network side device is implemented, then collision probability is reduced and reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource allocation function into two parts: node devices simply request timeslots and use them (simple operation), while the network side device handles the complex allocation logic (centralized management). This segmentation allows the complexity to be concentrated in the network infrastructure rather than distributed across all node devices, improving reliability through centralized control while keeping individual node devices simple.
3Ease of operation
If node devices monitor and select idle timeslots autonomously, then ease of operation is improved, but loss of time occurs due to monitoring and selection processes
Solution Approach 1:
The patent implements preliminary action by having the network side device pre-determine and allocate timeslots before node devices need to use them. Instead of node devices spending time monitoring and selecting timeslots autonomously (which causes time loss), the network side device proactively assigns timeslots based on available resources, eliminating the monitoring and selection time for node devices while maintaining simple operation.
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
Embodiments of the present application are for use in solving the problem of high probability of collisions occurring among existing node devices. Disclosed are a method and device for information submission and resource allocation in the Internet of Vehicles. The resource allocation method comprises: a network side device assigns a subframe resource to a node device just accessing a cell and notifies the node device just accessing the cell of the assigned subframe resource; for node devices already accessing the cell, the network side device determines colliding node devices, reassigns subframe resources to the colliding node devices, and respectively notifies the colliding node devices of the reassigned subframe resources. Because employed is a solution in which resources are scheduled collectively by a network side device for node devices accessing a cell, in addition to ensuring time-division multiplexing of resources among a node device and other node devices having needs for communication in the surrounding, thus increasing system capacity, timely and effective solution of resource collisions among colliding node devices is also allowed, thus increasing the performance of communication among system node devices.