V2V Spectrum Resource Allocation via Provider Time Slicing
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Solution Overview
Problem
Current resource management techniques for vehicle-to-vehicle (V2V) communication in mobile communication systems are complex and inefficient, particularly when multiple providers' base stations overlap, leading to costly dedicated spectrum allocation and multiple receiver chains, which limits flexibility and increases costs.
Innovation Solution
A method where mobile communication providers take turns allocating part of their spectrum for V2V activities using Time Division Multiple Access (TDMA)-like Spectrum Sharing, shifting resource allocation from provider to provider in a round-robin fashion, allowing fair resource allocation without dedicated spectrum and reducing the need for multiple transceiver chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated spectrum is allocated for V2V communication in each provider's base station area, then reliable V2V communication is ensured, but spectrum resources are wasted due to overlap and multiple allocations
Solution Approach 1:
The patent merges the V2V spectrum resources of multiple overlapping providers into a single common resource pool. Instead of each provider allocating separate dedicated spectrum in their coverage areas, the resources are combined and managed centrally, eliminating redundant allocations in overlapping regions while ensuring continuous V2V communication coverage.
Solution Approach 2:
The common V2V spectrum resource pool serves multiple providers simultaneously. The pooled spectrum resources can be dynamically allocated to V2V communications from any participating provider, making the spectrum universally usable across provider boundaries rather than being restricted to individual provider areas.
2Reliability
If multiple receiver chains are implemented to handle multiple providers' signals, then all V2V communications are received, but device complexity and cost increase
Solution Approach 1:
The patent makes the spectrum resource pool universal so that a single receiver chain can handle V2V communications from multiple providers. By pooling spectrum resources and managing them centrally, the system eliminates the need for separate receiver chains for each provider, as one unified spectrum pool can be received and processed by a single receiver.
3Quantity of substance
If centralized spectrum management is implemented across multiple providers, then spectrum efficiency improves, but coordination complexity increases
Solution Approach 1:
The patent introduces a centralized spectrum management entity that acts as an intermediary between multiple providers. This entity pools and manages the V2V spectrum resources, handling the coordination complexity centrally rather than requiring direct coordination between multiple providers and their respective base stations.
Data Source
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AI summary
For the scenario of vehicles (30) equipped with wireless communication modules (31) that communicate directly with each other on public roads, either for a cooperative or autonomous driving scenario, a very high reliability is very important. With LTE-V, the 3GPP standardization organization has specified a technique called sidelink communication with which the direct communication between cars is possible in the LTE frequency bands. The resources are scheduled in a base station (20) of a mobile communication cell. Since different mobile communication providers are available, there is the problem how to make it possible that participants from different providers can communicate with each other for a cooperative awareness traffic scenario with LTE-V communication. The solution proposed is that each provider will assign a dedicated spectrum (V, T, E, O) that is controlled by each provider itself for resource allocation for its own participants and the participants of other providers. The resource allocation management functionality for the direct communication among the participants from the plurality of providers is shifted from provider to provider from time slice (t_0, t_1, t_2, t_3) to time slice (t_0, t_1, t_2, t_3). This provides for a fair distribution of the resource management functionality among the different providers. At the same time, it avoids the provision of multiple transceiver chains in the communication modules with which the vehicles are equipped.