Location-Assisted Radio Resource Allocation for Vehicular Interference
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Solution Overview
Problem
Existing resource allocation methods for vehicular communication in LTE systems do not consider the location of vehicular mobile terminals, leading to potential interference and inefficient use of radio resources.
Innovation Solution
The proposed method improves resource allocation by considering the location of vehicular mobile terminals, using location-assisted resource allocation to restrict or select radio resources based on the vehicle's location, and incorporating a sensing capability to avoid resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If location-assisted resource allocation is implemented, then interference between nearby vehicular mobile terminals is reduced and radio resource usage efficiency is improved, but device complexity and system complexity increase due to location determination and sensing capabilities
Solution Approach 1:
The system performs preliminary sensing of radio resources to detect collisions before allocating them to vehicular mobile terminals. The base station or terminals themselves conduct advance sensing operations to identify which resources are already in use, preventing interference before it occurs. This preliminary detection mechanism resolves the contradiction by proactively avoiding harmful interference while maintaining manageable complexity through structured sensing procedures.
Solution Approach 2:
The base station acts as an intermediary that coordinates resource allocation based on location information and sensing results. Rather than requiring complex peer-to-peer coordination between all vehicular terminals, the base station mediates the resource allocation process, using location data to assign resources that minimize interference. This intermediary approach reduces overall system complexity while achieving the goal of interference reduction.
2Productivity
If location-based resource restriction is applied, then radio resource usage efficiency is improved, but device complexity increases due to location determination requirements
Solution Approach 1:
The system changes the parameter of resource allocation from generic to location-specific by introducing location as a new dimension for resource assignment. Resources are restricted and assigned based on geographic location parameters, allowing efficient utilization of radio spectrum by ensuring that nearby terminals do not collide on the same resources. This parameter change improves efficiency while the complexity is managed through standardized location reporting mechanisms.
Data Source
AI summary
The invention relates to an improved radio resource allocation performed by a vehicular mobile terminal. The vehicular mobile terminal determines whether to determine radio resources based on the location of the vehicular mobile terminal or not, based on information received from an entity of the communication system. In case the radio resources are to be selected based on the location of the vehicular mobile terminal, the vehicular mobile terminal determines the location of the vehicular mobile terminal, and determines radio resources for communication with at least the second mobile terminal, based on the determined location of the vehicular mobile terminal.