Voice Bridging Gateway for Tactical Radio Interoperability
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Solution Overview
Problem
Wireless voice radios used by first responders and military personnel often operate on different frequencies and protocols, making real-time communication challenging due to incompatibility issues, especially in hostile environments where distance and proprietary technologies hinder effective communication.
Innovation Solution
A Voice Bridge Gateway (VBG) system that uses gateway network radios and a VBG server with PBX application to bridge voice communications across disparate radio communication networks by converting and relaying signals through USB radio adapters, enabling interoperability between incompatible protocols and devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gateway network radios are deployed to bridge multiple incompatible radio networks, then interoperability between different radio protocols is improved, but device complexity increases
Solution Approach 1:
The gateway network radio acts as an intermediary device between incompatible radio networks. It receives signals from one network protocol, converts them to compatible digital signals, and relays them to another network protocol, enabling communication between otherwise incompatible systems without requiring the radios themselves to be modified.
Solution Approach 2:
The system replaces direct mechanical/electromagnetic signal transmission between incompatible radios with a digital signal processing approach. The gateway converts analog RF signals to digital signals, processes them through a PBX server, and converts back to analog signals for the target network, substituting complex direct protocol translation with standardized digital processing.
2Volume of moving object
If voice signals are converted to digital format and relayed through a mesh network, then communication range is extended, but signal transmission time increases
Solution Approach 1:
The gateway continuously monitors the RF channel and maintains a digital mesh network connection, preparing digital signal paths in advance. When voice communication is needed, the system already has the digital infrastructure ready to immediately relay signals, reducing the time penalty of digital conversion and relaying compared to establishing connections on-demand.
Solution Approach 2:
The mesh network maintains continuous digital connectivity between gateways and the PBX server, keeping signal pathways active and ready. This continuous operation eliminates the need to establish connections from scratch for each communication event, reducing latency while maintaining extended range capability.
Data Source
AI summary
Each of a number of gateway network radios operates with a transmission protocol of an associated one of plural incompatible communication networks. Each network radio has an audio terminal for producing first audio signals detected from transmissions of user radios in its associated network, and a microphone terminal for receiving second audio signals for transmission to the user radios. A voice bridging gateway server has multiple ports each corresponding to one of the networks for coupling to the network radio associated with the one network. Each port receives the first audio signals from the audio terminal of the associated network radio, and produces the second audio signals for applying to the microphone terminal of the network radio. The server implements a private branch exchange application whereby user radios in a given communication network can be voice bridged with user radios in a selected one or more of the other networks.