RoIP Gateway Audio Forwarding Failure Notification
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Solution Overview
Problem
In Push-to-talk (PTT) systems, particularly in Mission Critical Push-To-Talk (MCPTT), users cannot hear others when speaking simultaneously due to half-duplex communication limitations, and existing solutions like MCPTT floor control fail to notify users of audio forwarding failures, which is critical in emergency situations.
Innovation Solution
A Radio-over-Internet-Protocol (RoIP) gateway device detects audio communication from a radio handset, buffers it, and sends an audio notification to the user when audio forwarding fails, allowing users to retry communication or investigate the issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If floor control is implemented to allow only one user to speak at a time, then communication order is improved, but audio loss occurs when users without the floor attempt to speak
Solution Approach 1:
The system performs preliminary actions by detecting audio communication before floor control decisions are finalized. The RoIP gateway device monitors audio from radio handsets and buffers it, preparing for potential forwarding even before floor control is fully established. This allows the system to capture audio that might otherwise be lost due to floor control restrictions.
Solution Approach 2:
The system implements feedback by notifying users when their audio communication fails to forward. The RoIP gateway device sends notifications back to the radio handset when audio forwarding fails, allowing users to understand why their audio was lost and take corrective action. This closed-loop feedback resolves the information loss by making the system's decision transparent to the user.
2Ease of operation
If the RoIP gateway device is placed remotely to enable user mobility, then ease of operation is improved, but the user cannot see the device to detect forwarding failures
Solution Approach 1:
The system uses an intermediary communication channel to convey failure information from the remote RoIP gateway device back to the user's radio handset. Since the gateway is remotely located and not visible to the user, it employs audio notifications transmitted through the radio communication network to deliver failure information. This intermediary feedback mechanism allows users to detect failures without needing to see or access the physical gateway device.
3Reliability
If audio buffering is implemented to handle forwarding delays, then communication reliability is improved, but notification timing is delayed until after audio ends
Solution Approach 1:
The system applies beforehand cushioning by implementing audio buffering to handle potential forwarding delays and failures. The RoIP gateway device buffers audio communication from radio handsets, preparing it for forwarding while protecting against network issues, floor control delays, or other transmission problems. This cushioning mechanism ensures that audio is preserved and can be forwarded when conditions improve, enhancing communication reliability.
Data Source
AI summary
Methods and systems for indicating an audio forwarding failure at a Radio-over-Internet-Protocol (RoIP) gateway device of a RoIP system is disclosed. In one step, audio communication is detected from a radio handset communicatively coupled with the RoIP gateway device and is buffered. When an error in forwarding the audio communication to at least a portion of devices connected to the RoIP system, an audio notification indicative of the error is sent to the radio handset after determining the audio communication from the radio handset has ended.