Cell-Edge Resource Allocation for Collision-Free V2X Messages
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Collisions in message transmissions between vehicle apparatuses connected to different base stations occur due to independent resource allocation, particularly at cell edges, leading to potential communication failures in vehicle-to-everything (V2X) communication systems.
Innovation Solution
A method and apparatus for resource management in wireless communication systems that involve location-based resource allocation by base stations, where vehicles at cell edges are assigned dedicated resource areas to prevent collisions, and vehicles perform energy sensing to select available transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource allocation is independently performed in each base station, then resource management flexibility is improved, but collisions between message transmissions of vehicles connected to different base stations occur
Solution Approach 1:
The resource pool is segmented into multiple resource allocation areas, each associated with a specific base station. Vehicles are allocated resources in the resource allocation area corresponding to their serving base station, which prevents collisions between vehicles served by different base stations while maintaining independent resource management flexibility for each base station.
Solution Approach 2:
Different resource allocation strategies are applied to different locations within the coverage area. Specifically, vehicles at cell edges are allocated resources in a manner that avoids collisions with vehicles in neighboring cells, while vehicles in cell centers use standard allocation. This local differentiation resolves the collision problem at cell edges without affecting overall system flexibility.
2Extent of automation
If vehicles at cell edges use independent resource allocation, then base station resource management autonomy is improved, but collision probability increases due to overlapping resource pools
Solution Approach 1:
The resource pool is divided into distinct resource allocation areas, each uniquely associated with a base station. This segmentation allows each base station to autonomously manage resources in its designated area without causing collisions with other base stations, as the resource allocation areas are configured to prevent overlap at cell boundaries.
Solution Approach 2:
The resource allocation area configuration acts as an intermediary mechanism between base stations. By configuring non-overlapping resource allocation areas for adjacent base stations, collisions are prevented without requiring complex real-time coordination or communication between base stations, thus maintaining autonomy while reducing collision probability.
3Reliability
If dedicated resource areas are configured for each base station, then collision avoidance is improved, but resource utilization efficiency may deteriorate due to restricted allocation
Solution Approach 1:
The resource pool is segmented into resource allocation areas that are primarily dedicated to specific base stations to avoid collisions. However, the segmentation is designed to allow flexible boundaries and overlapping regions where resources can be shared between adjacent base stations, thus maintaining collision avoidance while improving resource utilization efficiency.
Solution Approach 2:
Resource allocation areas are designed with multi-functionality, allowing the same physical resource pool to serve multiple base stations under different conditions. Resources in boundary regions can be allocated to vehicles from different base stations depending on channel conditions and traffic demands, thus achieving both collision avoidance and high resource utilization.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An apparatus of a base station in such a wireless communication system includes at least one transceiver, and at least one processor operatively coupled to the at least one transceiver, wherein the at least one processor is configured to acquire a channel quality of a first vehicle apparatus, acquire a resource allocation area of the first vehicle apparatus according to the channel quality, and transmit, to the first vehicle apparatus, allocation information relating to a transmission resource determined in the resource allocation area, wherein the transmission resource is used by the first vehicle apparatus to transmit a message to a second vehicle apparatus.