Wireless sensor network clustering topology control method based on mobile nodes

A mobile node and topology control technology, applied in network topology, wireless communication, network planning, etc., can solve problems such as data conflicts, and achieve the effect of delaying the lifetime, strengthening network connections, and improving connectivity and coverage.

Inactive Publication Date: 2012-07-18
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0008] Cause data transmission conflicts, resulting in a large num

Method used

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  • Wireless sensor network clustering topology control method based on mobile nodes
  • Wireless sensor network clustering topology control method based on mobile nodes
  • Wireless sensor network clustering topology control method based on mobile nodes

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Experimental program
Comparison scheme
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Embodiment Construction

[0084] Certain embodiments of the invention are described in more detail below with reference to the accompanying drawings.

[0085] 1. Network initialization

[0086] (1) Ordinary node pairing

[0087] Each ordinary node calculates the distance from itself to each ordinary neighbor node based on the geographic location information. Such as figure 1 As shown, if the distance d between two ordinary nodes is less than a specific threshold, the two nodes are paired, otherwise they are not paired. Any ordinary node can only participate in one pair at most, that is, the pair formed by the node has no intersection.

[0088] The two nodes that form a pair work alternately according to the time wheel, such as figure 2 shown. Two nodes of a pair are automatically configured to use the same ID number and the same geographic location information, and appear as one node externally.

[0089] (2) Select the cluster head

[0090] Start the sink node, and the sink node broadcas...

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Abstract

The invention discloses a clustering topology control method based on asymmetric energy distribution and mobile nodes. A distributed idea is introduced into a clustering type two-stage topology control process; and the mobile nodes with asymmetric energy distribution play a key role in prolonging the service life of a wireless sensor network. The method comprises the following steps of: 1, initializing the network, selecting a cluster head for the first time and forming a cluster structure; 2, maintaining the cluster, namely after the cluster structure is formed, the network starts to transmit information according to a relevant route protocol; and 3, reconstructing the cluster. In conclusion, after the nodes are gathered to guide the network to be initialized, the network starts to run completely in a self-organized mode, so that the mobile nodes and the cluster head with asymmetric energy are selected.

Description

technical field [0001] The invention relates to a wireless sensor network topology method, which mainly adopts a method based on asymmetric energy distribution and introducing mobile nodes to solve the problem of efficient transmission of wireless sensor network information, and belongs to the application field of distributed computing, self-organization, and topology control crossover technologies. Background technique [0002] Wireless sensor network is a special wireless network composed of a large number of nodes, which realizes the functions of data sensing, collection and analysis in complex environments. The nodes in the wireless sensor network have the characteristics of small size, limited computing power, relying on radio wave communication, battery power supply, etc. These characteristics determine that the wireless sensor network should work in an optimal way in a specific environment, and there are still many problems to be solved . Topology control is an impor...

Claims

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Application Information

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IPC IPC(8): H04W16/00H04W84/18
Inventor 陈志骆平岳文静
Owner NANJING UNIV OF POSTS & TELECOMM
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