Route maintenance method for unidirectional emergency communication wireless network

Abstract

The invention relates to a route maintenance method for a unidirectional emergency communication wireless network, solving the technical problem that a route cannot be flexibly found and an unknown network topological structure cannot be quickly adapted. A unidirectional emergency communication wireless network model is built, and all data exchange routes of a unidirectional network in the unidirectional emergency communication mobile wireless network model are computed, so that a routing protocol is determined on demand; a node serial number is used for recording a route request sent by a host, the route is selected according to an adjacency relation and a distance between the hosts, and the most stable data exchange path with the shortest distance is acquired; identity authentication ofeach host node is completed by using a unidirectional Hash chain, data exchange route maintenance is perform via a periodical message of the routing protocol on demand. According to the method, the technical scheme of maintaining the effective route of the current network in real time by using the bidirectional accessibility of the unidirectional mobile network, so that the problem is well solved,and the method can be applied to emergency communication.

Description

technical field [0001] The invention relates to the field of network communication and data transmission, in particular to a route maintenance method for a one-way emergency communication wireless network. Background technique [0002] In recent years, the emergency communication security system has made great progress in the construction of the public network, but there is still a big gap between the application and the actual demand in the field of wireless ad hoc network technology; [0003] Although the existing wireless communication link network can achieve high-speed and effective data transmission under ideal conditions, it is easily affected by geographical environment and weather, and does not have the characteristics of flexible routing and fast adaptation to unknown network topologies. In underground emergency situations, it is impossible to provide reliable routing for the transmission of emergency information in unknown environments. [0004] The invention pro...

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Problems solved by technology

[0003] Although the existing wireless communication link network can achieve high-speed and effective data transmission under ideal conditions, it is easily affected by geographical environment and weather, and does not have the characteristics of flexible routing and fast adaptation to unknown network topologies. In underground emergency situations, it is impossible to provide reliable routing for the transmission of emergency information in unknown environments

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