Energy priority node clustering method for wireless sensor network

A wireless sensor network and node technology, applied in network planning, network topology, wireless communication, etc., can solve the problems of complex control and unbalanced energy consumption of cluster heads, and achieve the effect of prolonging survival time and excellent performance.

Active Publication Date: 2011-11-23
兴科迪科技(泰州)有限公司
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This protocol considers the problem of unbalanced energy consumption of cluster heads...

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  • Energy priority node clustering method for wireless sensor network
  • Energy priority node clustering method for wireless sensor network
  • Energy priority node clustering method for wireless sensor network

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Embodiment Construction

[0023] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0024] figure 1 The energy-priority node clustering method in the wireless sensor network of the present invention is shown, including the following steps:

[0025] When the network is deployed, the base station starts all nodes in the network by sending broadcast signals;

[0026] Each activated node in the network calculates the threshold for becoming a cluster head;

[0027] The nodes whose remaining energy in the network is greater than or equal to the average energy of the network and whose generated random number is less than the threshold are selected as cluster heads;

[0028] The cluster head broadcasts its own cluster head message to the whole...

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Abstract

The invention discloses an energy priority node clustering method for a wireless sensor network. The method comprises the following steps that: after network deployment is finished, a base station starts running all nodes in a network by transmitting a broadcast signal; each started node in the network computes own threshold value for becoming a cluster head; the nodes of which rest energy is more than or equal to the average energy of the network and which generate random numbers lower than the threshold values in the network are selected to be the cluster heads; the cluster heads broadcast own cluster head messages to the whole network, and each ordinary node computes own distances away from the cluster heads according to received signal strength after receiving the cluster head messages, and is added into the closest cluster as a cluster member; and the cluster heads allocate time division multiple access (TDMA) timeslots to each cluster member, so that each cluster member performs communication according to the allocated timeslots. By the method provided by the invention, the time to live of the network can be remarkably prolonged, and performance remarkably higher than that of a low energy adaptive clustering hierarchy (LEACH) protocol is ensured.

Description

technical field [0001] The invention relates to wireless sensor network technology, in particular to a node clustering method with energy priority in the wireless sensor network. Background technique [0002] The wireless sensor network is composed of a large number of cheap, low-power sensor nodes, which monitor and sense a variety of environmental information in the coverage area, and provide the collected information to remote end users after simple processing. Sensor nodes have strict energy constraints, and it is difficult to replenish energy. According to the requirements of specific applications, these nodes need to work continuously for several months or even years. Therefore, how to use energy reasonably is the primary problem facing the design of sensor networks. Organizing sensor nodes into clusters can effectively reduce energy consumption. Many energy-efficient routing protocols are designed on the basis of cluster structures, including LEACH, PEGASIS, and EEUC....

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W52/30H04W84/18
Inventor 白云飞
Owner 兴科迪科技(泰州)有限公司
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