Information passing method of wireless sensor network

Abstract

The invention relates to an information passing method of a wireless sensor network. According to the method, a sensing area is designed into a grid structure. Each grid unit has only one cluster head node. The cluster head nodes are responsible for communicating with the cluster head nodes in adjacent grid units. Mobile sink nodes select to communicate with the cluster head nodes in the nearest grid units. Alternation of the cluster head node in each grid unit is decided according to surplus energy and distance to the center of the grid unit, and the node with the highest surplus energy is taken as the cluster head node. Two mobile sink nodes are deployed at the periphery of the sensing region. According to the method, the existing defects that energy holes are liable to appear due to rapid energy consumption and the life cycle of the wireless sensor network is reduced are overcome. According to the method, the traffic load that the sink nodes broadcast positions to the network is reduced, the energy hole phenomenon is avoided, the extra energy consumption is avoided, the transmission number of hops of the node data is reduced, and the service life of the network is prolonged.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a method for transmitting information by a wireless sensor network. Background technique [0002] A wireless sensor network is usually composed of a large number of small and low-cost sensors, and the sensor nodes send the collected information to the sink node through a single-hop or multi-hop mode. These sensor nodes themselves have computing power, storage capacity and communication capacity. Wireless sensor networks are widely used, for example, environmental monitoring, smart home, smart medical care and so on. However, due to the particularity of the application environment, it is difficult to replace the battery for each wireless sensor, so the life cycle of the wireless sensor network will be limited by energy. How to use the limited energy resources of each sensor node and adopt an efficient data transmission method to balance energy consum...

AI Technical Summary

Problems solved by technology

The mobile sink node strategy, although the sensor nodes near the mobile sink node will change with time, which balances the energy consumption of the entire wireless sensor network to some extent, but there is still a problem in a large-scale network environment. The strategy of moving the aggregation node in the middle will bring serious network delay problems

At the same time, due to the frequent movement of aggregation nodes, in order to ensure reliable data transmission of nodes, node routing must be frequently reconfigured. Frequent routing reconfiguration will inevitably bring additional energy consumption, which seriously affects the service life of the network. This is also related to energy Efficient routing protocols run counter to

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