Vehicular Repeater Channel Allocation for Multi-Talk Group Support
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Solution Overview
Problem
Current vehicular repeater systems can only support one talk group at a time, leading to contention and inefficiency in scenarios with multiple vehicles requiring simultaneous communication across multiple talk groups.
Innovation Solution
A method and system that allow multiple vehicular repeaters to operate as a multi-channel site by determining arrival times and talk group activity, assigning master and slave repeaters, and dynamically allocating communication channels based on frequency of use, enabling multiple talk groups to be supported simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple VRSs are deployed to support multiple talk groups, then the coverage area and communication capacity are improved, but the system complexity and channel allocation difficulty increase
Solution Approach 1:
The system divides the VRS fleet into multiple independent units, each capable of supporting separate talk groups. The master VRS manages channel allocation while slave VRSs handle specific talk groups independently, segmenting the overall system into manageable functional units that can operate semi-autonomously
Solution Approach 2:
The master VRS acts as an intermediary between the fixed network equipment and multiple slave VRSs, managing channel allocation and coordination. It receives talk group activity information from slave VRSs and allocates channels accordingly, mediating the complexity of multi-channel coordination
2Productivity
If a single channel is used for all talk groups, then the system simplicity is maintained, but the wait time and contention among users increase
Solution Approach 1:
The system dynamically allocates channels to slave VRSs based on real-time talk group activity information. Channels are assigned and reassigned according to current demand patterns, allowing the system to adapt to changing communication needs and reduce wait times
Solution Approach 2:
The master VRS receives and processes talk group activity information from slave VRSs in advance, preparing channel allocation decisions before users need to access the system. This preliminary processing reduces contention and wait times when users attempt to join talk groups
3Adaptability or versatility
If VRSs are assigned fixed channels, then the allocation simplicity is maintained, but the adaptability to different talk group activities decreases
Solution Approach 1:
The system changes the channel assignment parameter from fixed to dynamic based on talk group activity patterns. The master VRS adjusts channel allocations to slave VRSs according to real-time activity information, allowing the system to adapt to varying communication demands while managing complexity through automated parameter adjustment
Data Source
AI summary
A system (100) and method (200) for providing a multiple channel site for supporting talk group activity is provided. The method includes determining (202) an arrival time (141) of a plurality of Vehicular Repeater System (VRS) (101-103) to a vicinity (140), identifying (204) talk group activity among the plurality of PSUs (171-176) in the vicinity, and assigning VRSs to talk groups in order of arrival time and talk group activity. A master VRS maintains and updates (322) a list of recently active talk groups (TG), orders (324) the list by frequency of use of a talk group, forwards the list to slave VRSs and PSUs, and allocates (326) single channels in view of the list to the slave VRSs. PSUs in the vicinity can read the assignment list and update their communication channel based on a selected talk group in the list.