V2R Channel Resource Allocation via Group Scheduling
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Solution Overview
Problem
In Vehicle-to-Roadside communication systems, the low utilization efficiency of channel resources leads to increased hardware costs due to the need for multiple transceivers to access both control and service channels simultaneously, resulting in idle periods for each channel.
Innovation Solution
A service providing apparatus divides service consuming apparatuses into groups and allocates them into coordination sets, pre-scheduling access periods for both control and service channels to optimize resource usage, allowing simultaneous access and consumption of resources without the need for multiple transceivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single transceiver is equipped in the OBU, then hardware cost is reduced, but channel resource utilization efficiency deteriorates due to idle periods in both control and service channels
Solution Approach 1:
The patent implements periodic time division multiplexing where the single transceiver alternates between control channel access and service channel consumption in scheduled time slots. This periodic switching allows the system to maintain both control and service functions while improving channel utilization by eliminating idle periods through structured time allocation.
Solution Approach 2:
The service providing apparatus performs preliminary scheduling by pre-allocating time slots for control channel access and service channel consumption. This advance planning allows the single transceiver to efficiently switch between channels without idle waiting time, thereby improving overall channel resource utilization while maintaining hardware cost efficiency.
2Productivity
If multiple transceivers are equipped in the OBU to access control and service channels simultaneously, then channel resource utilization efficiency is improved, but hardware cost deteriorates significantly
Solution Approach 1:
The patent uses periodic time division multiplexing to allow a single transceiver to alternately access the control channel and consume service channel resources in scheduled time slots. This approach achieves high channel utilization efficiency without requiring multiple simultaneous transceivers, thereby avoiding increased hardware costs.
3Productivity
If time division multiplexing is implemented with group scheduling, then channel resource utilization efficiency is improved, but system complexity increases due to scheduling mechanisms
Solution Approach 1:
The patent segments service consuming apparatuses into different groups and further divides them into coordination sets. This hierarchical segmentation allows the service providing apparatus to manage scheduling complexity by handling groups and sets separately, while still achieving high channel utilization through coordinated time division multiplexing across all segments.
Solution Approach 2:
The patent implements periodic scheduling where coordination sets are allocated specific time slots for control channel access and service channel consumption. This periodic structure simplifies the scheduling mechanism by creating predictable, repeating patterns that reduce the computational complexity of resource management while maintaining high channel utilization efficiency.
Data Source
AI summary
A service providing apparatus, a service consuming apparatus, and a service transmitting method thereof are provided. The service providing apparatus is able to pre-allocate a plurality of service consuming apparatus into different groups, to pre-schedule the groups in a control channel, and to pre-schedule the groups in at least one channel. Accordingly, the channel resource can be consumed more efficiently by the service consuming apparatus.