Adaptive gateway based on disaster emergency communication and network selection method thereof

Abstract

The invention provides an adaptive gateway based on disaster emergency communication and a network selection method thereof. The gateway comprises a main controller, a power supply module, a storage module, a man-machine interaction module, a serial port communication interface, a wireless data transmission interface, an uplink communication module and a downlink communication module. The method comprises the following steps of S1, pre-judging the network switching; S2, solving a weight vector of the to-be-transmitted data based on an AHP method and a G-1 method; S3, in combination with S2, sorting the alternative networks based on a TOPSIS method; s4, selecting the network transmission data according to the sequence; S5, judging the network reliability, and selecting a backup network to transmit data at the same time; and S6, dynamically adjusting the network user preference attribute value. The gateway provided by the invention solves the problem of network physical layer interconnection, and improves the information transmission efficiency. The method selects the optimal network from a plurality of networks to transmit data, thereby not only ensuring the emergency communicationin disaster areas, but also being able to effectively consider the benefits of the social public resources.

Description

technical field [0001] The invention relates to an self-adaptive gateway for disaster site emergency communication and a communication network selection method of the gateway, belonging to the technical fields of electronics, communication, and information engineering. Background technique [0002] China is one of the countries in the world that are seriously affected by natural disasters. As my country accelerates the pace of socialist modernization, the Chinese government regards disaster prevention and mitigation as an important measure to ensure the sustainable development of the national economy and society. In recent years, major social events and disasters such as mine collapses, floods, and frequent earthquakes have occurred continuously. Governments at all levels are facing increasing pressure in terms of disaster prevention and mitigation and emergency rescue timeliness. When these incidents occur, quickly selecting the best communication tool, realizing real-time ...

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Problems solved by technology

[0003] Aiming at the problem that emergency communication in the disaster area cannot be carried out quickly and reliably after the disaster occurs, the present invention proposes an adaptive gateway based on disaster emergency communication and its network selection method. The sensor network is the input, and the upper layer uses 4G, satellite, and Ethernet to realize self-adaptive output. After a disaster occurs, the gateway adaptively selects the optimal communication network according to factors such as transmission priority, transmission signal strength, and transmission interruption probability, which not only ensures the disaster area Emergency communication can effectively take into account the benefits of social public resources

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