V2X Resource Allocation via Virtual Point Mobility
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently allocating resources for Vehicle-to-Everything (V2X) communication, particularly due to high installation and maintenance costs of V2X base stations and unstable resource selection as vehicles move across different resource pools.
Innovation Solution
The proposed solution involves a method where a virtual point moving at a predetermined speed is set by the network entity, and a representative UE is selected to manage a resource pool, allowing other UEs within coverage to use this pool, with the representative UE periodically updating its location and broadcasting resource allocation information to prevent resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X base stations are deployed to manage resource allocation, then resource allocation reliability is improved, but installation and maintenance costs increase
Solution Approach 1:
The patent introduces a virtual point as an intermediary entity that moves at a predetermined speed to represent the coverage area. This virtual point acts as a mediator between the network entity and actual UEs, enabling resource pool management without requiring physical V2X base stations at every location. The network entity manages resource pools associated with these virtual points, reducing the need for extensive physical infrastructure while maintaining reliable resource allocation.
Solution Approach 2:
The patent creates virtual representations (virtual points) of physical coverage areas. Instead of deploying physical base stations throughout the network, the system uses virtual points that are managed by the network entity to represent and control resource pools. This copying approach allows the system to maintain resource allocation reliability without the high costs of physical infrastructure deployment.
2Ease of operation
If static resource pools are assigned to fixed locations, then resource allocation is simplified, but resource selection becomes unstable as vehicles move across different pools
Solution Approach 1:
The patent transforms static resource pools into dynamic ones by associating them with virtual points that move at predetermined speeds. As vehicles move through the network, they remain within the coverage of their designated virtual point, maintaining stable resource pool assignments. The virtual point's movement compensates for vehicle mobility, ensuring that vehicles continuously access the same resource pool without frequent reselection, thus maintaining both simplicity and stability.
Solution Approach 2:
The virtual point serves as a dynamic intermediary that moves with the coverage area. This mediator allows the system to maintain simple resource pool assignments while adapting to vehicle movement. Instead of requiring complex real-time resource reassignment when vehicles move, the virtual point's predetermined movement pattern ensures vehicles remain within their assigned resource pool coverage, maintaining stability without complicating the allocation mechanism.
3Measurement precision
If representative UEs frequently update location information, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements periodic updates of location information by representative UEs rather than continuous updates. The representative UE updates its location information at predetermined intervals to the network entity. This periodic action maintains sufficient resource allocation accuracy by providing timely location information without the excessive signaling overhead of continuous updates, achieving a balance between precision and communication efficiency.
Data Source
AI summary
The present invention relates to a method and device for performing vehicle-to-everything (V2X) communication in a wireless communication system. More specifically: information indicating whether to be selected as a representative terminal (representative UE) is received from a network entity; when selected as the representative terminal, V2X communication is performed using a resource pool associated with a virtual point moving at a predetermined speed and set by the network entity; and when selected as the representative terminal, a reference signal is transmitted to at least one second terminal existing in a coverage corresponding to the virtual point.