Mobile sensor network routing method based on region gradient updating

Abstract

The invention discloses a mobile sensor network routing method based on area gradient update. The invention is beneficial to the application and development of my country's wireless sensor network technology, and is beneficial to my country's environmental monitoring and forecasting, natural disaster emergency treatment, scientific investigation and exploration, smart home, urban transportation, large garage and warehouse management, as well as airports and large industrial parks. Areas such as safety monitoring will play an important role. The method mainly solves the problems that the energy consumption of the prior art protocol is relatively large and occupies a lot of storage space. In the method, the base station initiates the establishment of regional gradients and periodically updates the regional gradients, and synchronizes the time of the entire network. When the source node wants to send data to the sink node, the source node initiates and establishes a link to the sink node to complete the data transmission. Based on the wireless sensor network, the service life of the wireless sensor network is increased, and the storage space of the sensor is saved.

Description

technical field [0001] The invention relates to a routing selection between a sensor node and a converging node in a wireless sensor network, and in particular provides a routing method for a mobile sensor network based on area gradient updating. Background technique [0002] The mobile sensor network is a dynamic sensor network, which consists of a large number of dynamic sensor nodes and a small number of static sensor nodes. The dynamic sensor nodes move randomly in the network area, and the adjacent nodes rely on wireless links for communication. The mobile sensor nodes in the network are responsible for collecting information, and use other sensor nodes to forward the information to the sink node. The routing method is used to establish an information transmission path from a source node to a sink node, and select an intermediate node that needs to forward information. All nodes on the transmission path consume a certain amount of energy when forwarding data. How to de...

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Problems solved by technology

[0004] The routing protocols designed in the literature have relatively short convergence time for route establishment, but have the following defects: network nodes need to frequently exchange time information to establish gradients during the movement process, and the energy cost is relatively large; each node needs to save a The encounter time gradient value table needs to occupy a certain amount of storage space

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