Multi-Link Voice Aggregation for Full-Duplex Group Calls
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Solution Overview
Problem
Existing group call systems face limitations in achieving full-duplex communication, particularly in areas without base station coverage, and suffer from unreliable data transmission due to limited transmission distance and interference in short-range networks.
Innovation Solution
A multi-link aggregation transmission method that combines local wireless ad hoc networks with public networks to transmit voice data simultaneously through two links, utilizing a data fusion module to process and combine audio data from both networks, ensuring reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If short-range communication networking (Bluetooth/Zigbee) is used to implement Adhoc self-organizing network for group calls, then the system can operate without base station coverage, but the transmission distance is limited and data loss occurs easily in scenarios with obstruction and strong interference
Solution Approach 1:
The patent combines two different communication networks (Adhoc network and public network) into a unified group call system. The terminal equipment simultaneously connects to both networks, allowing the system to leverage the independence of Adhoc network (no base station needed) while using the public network to overcome transmission limitations and improve reliability.
Solution Approach 2:
The terminal equipment is designed to support multiple communication modes simultaneously - it can operate in Adhoc network mode for areas without base station coverage, and switch to or combine with public network mode for areas with coverage, making the device universally applicable across different deployment scenarios.
2Ease of operation
If traditional radio intercom method is used with VHF/UHF frequencies, then the system can achieve half-duplex wireless communication, but full-duplex communication cannot be achieved and real-time communication is compromised
Solution Approach 1:
The patent transitions from traditional single-radio-frequency half-duplex communication to a multi-dimensional communication architecture that simultaneously utilizes Adhoc network and public network channels. This dimensional expansion allows full-duplex communication by providing separate transmission paths for simultaneous bidirectional communication.
3Reliability
If public network is used for full-duplex group calls, then full-duplex communication can be achieved, but the system cannot communicate in areas without base station coverage
Solution Approach 1:
The system merges Adhoc network capability with public network connectivity, allowing terminals to automatically select or combine communication paths based on availability. This enables full-duplex communication where public network is available while maintaining operational capability in areas without base station coverage through Adhoc networking.
4Device complexity
If single-link transmission is used, then the system structure is simple, but transmission bandwidth is limited and communication quality is insufficient
Solution Approach 1:
The patent combines multiple transmission links (Adhoc network link and public network link) into an aggregated transmission system. This multi-link aggregation increases overall transmission bandwidth and communication quality while maintaining relatively simple terminal structures that can handle multiple network connections simultaneously.
Data Source
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AI summary
The present invention relates to a multi-link aggregation transmission method and system for a group full-duplex call system. The method comprises: a network protocol stack receives, by means of a public network, a network audio data packet of a server, performs decapsulation processing on the network audio data packet, and transmits network audio data obtained by means of the decapsulation processing to a data fusion module; a wireless protocol stack receives, by means of an ad hoc network, a wireless audio data packet of a neighbour node arranged in the ad hoc network, performs decapsulation processing on the wireless audio data packet, and transmits wireless audio data obtained by means of the decapsulation processing to the data fusion module; and the data fusion module performs adaptive dynamic combination processing on the network audio data and the wireless audio data on the basis of an operation mode to obtain combined data, and transmits the combined data to an audio decoding module. The present invention achieves full-duplex communication by means of multi-link transmission, allows for communication in an area without base station coverage, and achieves reliable communication under the condition of strong interference.