Cluster head selection algorithm of improved LEACH protocol based on target threshold constraint

A technology for selecting algorithms and targets, applied in advanced technology, electrical components, network topology, etc., can solve the problems of inefficient use of sensor resources, failure to consider the remaining energy of nodes, centralized distribution, etc.

Active Publication Date: 2019-04-05
HENAN UNIVERSITY
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Problems solved by technology

[0004] The LEACH protocol is a typical representative of the clustering algorithm for wireless sensor networks, and it is the basis for studying other clustering routing protocols. Targets in the area, the sensor resources cannot be efficiently used when observing the target
Secondly, in the process of cluster head selection, the LEACH algorithm only randomly selects the cluster head according to the optimal probability of the node in the network ex

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  • Cluster head selection algorithm of improved LEACH protocol based on target threshold constraint
  • Cluster head selection algorithm of improved LEACH protocol based on target threshold constraint
  • Cluster head selection algorithm of improved LEACH protocol based on target threshold constraint

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[0050] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0051] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0052] The following combination Figure 1 to Figure 2 The present invention is further explained.

[0053] Such as Figure 1 to Figure 2 As shown, the cluster head selection algorithm of the impr...

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Abstract

The invention provides the cluster head selection algorithm of an improved LEACH protocol based on a target threshold constraint. Under the condition of satisfying a target and a node threshold constraint, an improved cluster head selection algorithm under the combined effects of constrained conditions, such as a node and target distance factor, a node and base station distance factor, a node residual energy rate and the like, is designed. The algorithm is characterized by firstly, determining a candidate observation node set according to the positional relation between all nodes in a monitoring area and a monitoring target; and then, carrying out random cluster head selection on the nodes in the candidate observation node set. The threshold formula of LEACH protocol cluster head selectionis improved so that the node which has large residual energy and is close to a base station has the higher probability of being selected as a cluster head node. Therefore, the cluster head selectionmechanism of the improved algorithm is reasonable, the energy consumption of nodes in the network can be effectively balanced and reduced and the life cycle of the network is prolonged.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network communication, in particular to a cluster head selection algorithm based on an improved LEACH protocol constrained by a target threshold. Background technique [0002] With the rapid development of sensor technology, sensor manufacturing process and wireless communication technology, various miniature sensors with different functions form a wireless sensor network (WirelessSensor Networks, WSN) in a self-organizing form with the support of embedded technology. WSN is widely used in many application fields such as environmental monitoring, smart home, industrial control, medical care, and military battlefield. WSN is usually composed of a large number of sensor nodes with limited energy and difficult to replenish energy after a deployment. Most of the sensor nodes are randomly deployed in the monitoring environment to complete the task of monitoring targets within the range. In ord...

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Application Information

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IPC IPC(8): H04W40/10H04W40/20H04W40/32H04W84/18
CPCH04W40/10H04W40/20H04W40/32H04W84/18Y02D30/70
Inventor 周林魏倩金勇胡振涛李军伟方拥军武国栋刘英毛贻豪石昌森刘畅卢开钦王辰王晗王会勤谢东东
Owner HENAN UNIVERSITY
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