Emergency talkback method with wide-band and narrow-band simultaneous voice access capability

By adopting multi-mode emergency walkie-talkie and core network processing technology in the emergency communication system, simultaneous access and processing of broadband and narrowband voice is achieved, the problems of voice interruption and discontinuity in the existing system are solved, and seamless switching and continuous voice playback are achieved.

CN119676660AActive Publication Date: 2025-03-21天津七一二移动通信股份有限公司
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Patent Information

Application Number
CN202510174066.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-03-21
Estimated Expiration
2045-02-18

AI Technical Summary

Technical Problem

Existing emergency communication systems cannot achieve broadband and narrowband voice access at the same time in harsh environments, resulting in voice interruption and discontinuity.

Method used

A multimode emergency walkie-talkie with two standards of broadband and narrowband is used to send voice packets carrying sequence flags on both networks through a 60ms voice frame length, and voice frame alignment, completeness comparison and verification correction are performed in the core network, and packets with good integrity are selected to reproduce complete voice.

Benefits of technology

It realizes seamless switching and posting voices from another network in harsh environments, avoiding voice loss and heavy words, and users do not need to switch manually, ensuring the continuity of voice playback.

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Abstract

The invention discloses an emergency talkback method with a wide-band and narrow-band simultaneous voice access capability. The method comprises the following steps: establishing communication by using a multimode emergency interphone with a broadband system and a narrowband system in an emergency communication scene, and sending a voice packet carrying a sequence mark on two networks according to a voice frame length of 60ms; the core network carries out voice frame alignment through a sequence mark, carries out completeness comparison on voice packets transmitted by the narrowband network and the broadband network within a buffer time of 300ms, regenerates a section of complete voice, converts the voice into a broadband format and a narrowband format, and issues the voice to the broadband network and the narrowband network; the voice is interrupted only under the condition that the transmission cannot be carried out by the two networks, otherwise, the voice playing is continuous. By the adoption of the method, when a single mode is disturbed, seamless switching is conducted, voice of another network is issued, the voice is not lost or duplicated, and manual switching of a user is not needed.
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