Low-power-consumption multi-path real-time voice communication system based on wireless sensor network and method thereof

Abstract

The invention relates to a low-power-consumption multi-path real-time voice communication system based on a wireless sensor network and a method thereof. The system comprises a central node, a route node, a voice terminal and a data acquisition terminal, wherein the voice terminal comprises a voice coding and decoding module, a voice acquisition module and a voice playing module. The communication method comprises the two kinds of voice communication methods of P-2-P and P-C-P, both the P-2-P and P-C-P comprise the following steps: a calling request to a terminal B is initiated by a terminal A; the coding and decoding module is started after the terminal A and the terminal B receive time slice distribution information, and communication is carried out, when the communication is completed,the voice coding and decoding module is closed by the terminal A and the terminal B, the direction communication of the two terminals is realized by the P-2-P, and the communication is realized by the P-C-P through the transmission of the central node or the route node. In the invention, the wireless voice transmission network with low power consumption and low cost can be realized, and the two communication methods can be widely applied to personnel scheduling, early warning and daily talking in various wireless sensor network systems, and has a very broad application prospect.

Description

technical field [0001] The present invention relates to a low-power multi-channel real-time voice communication system and method based on a wireless sensor network, and more specifically, to a low-power multi-channel voice communication system based on a wireless sensor network that enables and disables a voice codec module in real time. Real-time voice communication system and method. Background technique [0002] Wireless sensor network (WSN) is a self-organizing network system composed of a large number of sensor nodes deployed in the monitoring area through wireless communication. As an emerging technology that integrates sensor technology, microelectronics technology and wireless communication technology, Since its birth in the 1990s, WSN has received widespread attention and developed rapidly, and has broad application prospects. At present, the vast majority of WSN applications are aimed at the fields of sensor data acquisition and detection. As an important informa...

AI Technical Summary

Problems solved by technology

In order to ensure that the wireless sensor network deployed in the field can work normally, it is necessary to ensure the low energy consumption of the network operation, otherwise the various nodes in the network will not work properly due to insufficient energy, which will seriously affect the availability of the network.

[0004] However, the existing mainstream WSN protocol, such as IEEE802.15.4 / ZigBee protocol, is a reliable, flexible, low-speed, low-power short-distance wireless transmission protocol; but for voice data transmission, the protocol is too complicated, and at the same time The ACK message will generate a large number of network information packets, and the multi-hop protocol will cause serious network delay

Most other WSN protocols have similar characteristics and are not suitable for building multi-channel real-time voice communication systems

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