Off-Network PTT Floor Control Using Media Header Parameters
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Solution Overview
Problem
In off-network group calls, the absence of a dedicated floor control server leads to packet loss and interference among multiple devices transmitting media packets, deteriorating call quality due to the lack of effective floor control mechanisms.
Innovation Solution
An electronic device determines whether to maintain or release the floor based on parameters in the media packet header, ensuring only one device has the floor at a time, thereby reducing packet loss and improving call quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple electronic devices transmit media packets simultaneously in off-network group call, then communication efficiency is improved, but packet loss and interference occur due to lack of floor control
Solution Approach 1:
The patent introduces a floor control mechanism as an intermediary layer between multiple electronic devices transmitting media packets. This mechanism manages floor allocation and release through standardized messages, coordinating transmission rights among devices to prevent simultaneous transmissions that cause packet loss and interference, thereby maintaining reliable communication while allowing efficient multi-device participation.
2Adaptability or versatility
If no floor control server exists in off-network situation, then device autonomy is improved, but floor control reliability deteriorates due to message packet loss or delay
Solution Approach 1:
The patent implements self-service floor control where electronic devices autonomously manage floor allocation without requiring a centralized floor control server. Devices independently send and process floor control messages according to standardized protocols, enabling autonomous operation in off-network scenarios while maintaining reliable floor management through structured message exchange and state machine implementation.
3Adaptability or versatility
If multiple electronic devices maintain the floor simultaneously, then communication flexibility is improved, but call quality deteriorates due to media packet interference
Solution Approach 1:
The patent implements preliminary action by requiring devices to obtain floor permission before transmitting media packets. The floor control mechanism pre-coordinates transmission rights through floor grant messages, ensuring that only one device transmits at a time. This preliminary coordination prevents media packet interference and maintains high call quality while allowing flexible multi-device communication through proper floor allocation and release sequences.
Data Source
AI summary
An electronic device is provided. The electronic device includes a communication circuit, at least one processor, and a memory. The memory may store instructions which, when executed, cause the at least one processor to participate in a push-to-talk (PTT) session of an off-network mode, receive a media packet including media data from an external electronic device of the PTT session while possessing a floor of the PTT session, determine whether the floor of the PTT session is maintained, on the basis of at least one parameter included in the header of the media packet, and transmit, when the floor of the PTT session is not maintained, a message indicating release of the floor of the PTT session.