WSN clustering method based on packet loss probability measurement

A technology of packet loss rate and clustering, which is applied in the field of WSN clustering based on packet loss rate measurement, can solve the problem of reduced survivability of wireless sensor networks, and achieve the effect of improving survivability and reducing packet loss rate

Inactive Publication Date: 2014-08-27
XIDIAN UNIV
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Problems solved by technology

[0006] The present invention proposes an improved clustering protocol, which is used to solve problems such as interference or fading figure 1 As shown (cluster 1, cluster 2, ..., cluster n and the sink node part constitute the LEACH topology) the problem of reduced survivability of the wireless sensor network

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  • WSN clustering method based on packet loss probability measurement
  • WSN clustering method based on packet loss probability measurement
  • WSN clustering method based on packet loss probability measurement

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] The steps of a kind of WSN clustering method based on packet loss rate measurement of the present invention are:

[0034] Step 1: the system framework of the wireless sensor network that the present invention adopts is as figure 1As shown, it is composed of sensor nodes (that is, all nodes in the cluster), sink nodes (Sink) and task management nodes. A sensor node is a miniature embedded system with relatively weak processing, storage and communication capabilities, and is powered by a battery with limited energy. The aggregation node (Sink) connects the sensor network and the external network such as Internet, realizes the communication protocol conversion between the two protocol stacks, releases the monitoring task of the management node at the same time, and forwards the collected data to the external network. Therefore, the proc...

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Abstract

The invention discloses a WSN clustering protocol (LEACH-LLR) based on packet loss probability measurement. Firstly, at the beginning of each round, all nodes send the energy E, packet loss probability P and position information ID of their own to a convergence node, the convergence node calculates the effective energy of nodes in a network, only nodes with effectively energy Ev higher than an average effective energy value Evaver can be selected as the candidate cluster head, and then a candidate cluster head set is established; then, target optimization is conducted on the candidate cluster head set by the convergence node by means of the simulated annealing algorithm in the LEACH-C protocol based on a total network energy consumption minimum function, a cluster head set enabling an objective function to be small is selected from candidate cluster heads by means of the simulated annealing algorithm, and then clustering schemes of all nodes are obtained. The WSN clustering protocol (LEACH-LLR) based on packet loss probability measurement solves the problems that network lifetime is shortened, data transmission efficiency is low and time delay is long due to the fact that the packet loss probability of cluster heads of existing clustering nodes is too high.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor network clustering protocols, and relates to a WSN clustering method based on packet loss rate measurement. Background technique [0002] A wireless sensor network is an ad hoc network composed of a large number of sensor nodes. This network system can be widely used in environmental monitoring, medical care, military defense, smart home and other fields. By placing a large number of densely deployed and self-organized wireless sensor nodes in the sensing area, users can complete the monitoring of the designated area. [0003] At present, clustering is one of the main energy-saving means in wireless sensor networks. Clustering the sensor nodes of the wireless sensor network can effectively organize the network topology, use multi-hop transmission to communicate, and reduce long-distance transmission, so it can effectively reduce energy consumption and prolong the network lifetime. In th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W40/12H04W84/18
CPCY02D30/70
Inventor 易运晖陈南战立岸朱畅华何先灯权东晓裴昌幸
Owner XIDIAN UNIV
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