Cross-layer and bi-directional routing method based on hop number and energy in wireless sensor network

Abstract

The invention asks for protecting a cross-layer and bi-directional routing method in a wireless sensor network and relates to the technical field of communication. The existing wireless sensor network has the disadvantages that no downlink route is established in route establishing process, function of inquiring a sink node can not be supported, extra-cost occurs when energy information is updated by adopting node energy as the routing standard, and the cost of controlling the system is slightly larger. The method adopts source routing and cross-layer information share manner and uses smaller cost to establish the downlink route from the sink node to a sensor node without using special control group, the function of inquiring the sink node is added, and regular acquiring, releasing and updating of the rest energy information of the node are realized, when routing, the hop number and the rest energy of the node are both used as the measure standards, the energy consumption when forwarding the node is balanced when reducing the node energy and the network bandwidth consumption, and the service life of the wireless sensor network can be prolonged, and the network bandwidth utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to plane routing technology of wireless sensor networks. Background technique [0002] Wireless sensor network is a system that combines technologies such as detection, wireless communication and computer network, and can perform remote perception and monitoring of physical characteristics in a certain area. Because it undertakes multiple tasks such as detection, processing and communication, wireless sensor networks are facing greater pressure on resources such as energy and bandwidth. The sensor nodes in the wireless sensor network have limited volume, computing and storage capabilities; usually rely on batteries to provide energy, and the transmission power is limited, and generally require multi-hop forwarding to achieve data transmission; the location of sensor nodes may change due to movement, and the energy is also limited. It will gradually decrease over ti...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the routing method based on the number of hops in the existing wireless sensor network plane routing technology. In the route creation process, the downlink route is not established, and the query function of the sink node cannot be supported; the update of the remaining energy information of the node brings additional overhead and periodicity. Creating mechanisms such as uplink routing increases the control overhead, etc., and proposes a cross-layer bidirectional routing method based on hop count and energy to solve the above-mentioned defects of the existing hop count-based routing method in wireless sensor networks

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