Two-way energy balance wireless sensing network route method based on LEPS

Abstract

The invention provides a two-way energy balance wireless sensing network route method based on LEPS (Link Estimation and Parent Selection), which adds a downlink route based on an LEPS route protocol, supports query and control of aggregation nodes to other nodes, improves a routing basis of the LEPS route protocol, introduces residual energy based on hop count and data link quality, and improves load balance of a network. The method adds the downlink route, so that the control of the aggregation nodes to the common nodes is achieved, and an application scope of the route protocol is expanded; the downlink route is achieved based on an uplink route, and is simple to achieve; extra control information is less; resources can be saved effectively; and the hop count, the link quality and the residual energy of the nodes are combined together, and considered as the basis of selection of father nodes, so that the load balance of the nodes in the same gradient is achieved, premature failure of the individual node due to an overweight load is avoided, and the life cycle of the whole network is prolonged.

Description

Technical field: [0001] The invention relates to the technical field of wireless sensor networks, in particular to a routing method for a bidirectional energy balanced wireless sensor network based on the LEPS protocol. 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 size, computing and storage capabilities, usually rely on batteries to provide energy, and the transmission power is limited. Generally, multi-hop forwarding is required to achieve data transmission. The location of sensor nodes may change due to movement, and the energy ...

AI Technical Summary

Problems solved by technology

The LEPS routing protocol has small transmission delay, high reliability, simple implementation, and less resources. However, because it only specifies the uplink route for data transmission, it cannot be applied to networks where the sink node needs to control the data source node.

In addition, since the selection of the parent node in the LEPS routing protocol is based on the number of hops and link quality, and does not consider the energy factor of the node, it will cause load imbalance, especially for a network with fixed node positions. will become more apparent that nodes that partially act as parents tend to run out of energy prematurely

Images