Relay Device Multi-Session Voice Routing
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Solution Overview
Problem
In voice communication systems over wireless LANs, terminal devices can only participate in one communication session at a time, leading to disruptions when a new call with higher priority interrupts an ongoing conversation, causing the previous call to be terminated or silenced.
Innovation Solution
A relaying device and method that allow terminal devices to participate in multiple communication sessions, enabling them to hear and speak in one session while receiving audio from other sessions they belong to but do not actively participate in, by forming and managing multiple communication sessions based on priority and using a control unit to transfer voice signals between participating and non-participating devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal device participates in only one communication session at a time, then the communication session management is simple, but the terminal device cannot hear both the previous conversation and the new conversation when a new call is made during ongoing communication
Solution Approach 1:
The patent segments the communication sessions into different priority levels (first priority and second priority). The control unit manages these segmented sessions differently, allowing the terminal device to participate in one first-priority session while simultaneously receiving audio from second-priority sessions it belongs to but is not actively participating in. This segmentation resolves the contradiction by enabling multi-session participation without requiring the device to manage all sessions with equal complexity.
2Loss of information
If the terminal device receives audio from multiple communication sessions simultaneously, then it can hear both previous and new conversations, but the device complexity for managing multiple sessions increases
Solution Approach 1:
The control unit acts as an intermediary that manages the terminal device's participation in multiple communication sessions. It intelligently routes audio streams based on session priority and participation status, allowing the device to receive audio from multiple sessions without requiring the device itself to implement complex session management logic. The control unit handles the complexity centrally while maintaining simple client-side implementation.
3Reliability
If a new call with higher priority is made during ongoing communication, then the new call is prioritized, but the previous conversation cannot be heard anymore
Solution Approach 1:
The patent applies local quality by treating different communication sessions with different priority levels and participation modes. First-priority sessions receive full participation (both sending and receiving audio), while second-priority sessions receive only audio reception when the device is not actively participating in a first-priority session. This localized differentiation of service quality allows the device to maintain reliable priority handling while preserving access to previous conversations through the lower-priority session audio streams.
Data Source
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AI summary
[Problem] To provide a voice communication system which uses a communication network, and with which a terminal device is capable of listening to both a previous call and a new call, even when another call is received during communication. [Solution] Provided is a relay device which is equipped with: a network communication unit which communicates with terminal devices over a communication network; and a control unit which controls voice communication between the terminal devices. The control unit of the relay device forms a plurality of communication sessions, and allows a plurality of the terminal devices to each of the communication sessions. The terminal devices belonging to one of the communication sessions participate in communication in the communication session. The terminal devices assigned to two or more communication sessions participate in communication in any one of the communication sessions. Voice signals received from terminal devices are transferred to other terminal devices participating in the communication session in which the aforementioned terminal devices are participating, and to terminal devices only belonging to the communication session.