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A method for adjusting the long life of multicast tree based on dfm strategy

An adjustment method and multicast tree technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as large energy consumption and network paralysis

Inactive Publication Date: 2016-02-17
北京航空航天大学深圳研究院
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Problems solved by technology

[0006] In order to solve the problem of network paralysis caused by excessive energy consumption of certain shared nodes in wireless sensor networks due to multitasking, the present invention proposes a long-lived multicast routing, that is, multicast tree long-life adjustment based on DFM strategy method

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  • A method for adjusting the long life of multicast tree based on dfm strategy
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  • A method for adjusting the long life of multicast tree based on dfm strategy

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Embodiment Construction

[0074] The present invention will be further described below in conjunction with the accompanying drawings.

[0075] The present invention is a DFM strategy-based multicast tree long-life adjustment method suitable for wireless sensor networks. The method uses the DFM strategy to separate existing shared nodes in the multicast tree, and realizes the performance of each node in each multicast tree. Consuming equalization prolongs the survival time of the entire wireless sensor network.

[0076] After multiple multicast trees are established, there are still some shared nodes. The present invention uses DFM strategy to separate the shared nodes, so that as many shared nodes as possible can be transformed into common nodes only in one multicast tree.

[0077] see figure 1 As shown, in a wireless sensor network, there are multiple multicast trees and multiple shared nodes; each multicast tree includes root nodes, leaf nodes and non-leaf nodes. Generally, the shared nodes are non...

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Abstract

The invention discloses a method for adjusting the long life of a multicast tree based on a DFM strategy. In the method, firstly, the shared nodes are sorted according to the number of occupied multicast trees, and then the sorted shared nodes are sorted from participating multicast trees one by one. Separation; in the process of separating the shared nodes, select the participating multicast tree according to the number of child nodes, find a backup parent node for the child nodes of the shared node in the selected multicast tree, and then execute DFM by sending and receiving messages Strategy. The method of the present invention solves the problem of using the DFM strategy to separate the shared nodes when there may still be some shared nodes after the establishment of multiple multicast trees, so that as many shared nodes as possible can be transformed into ordinary multicast nodes only in one multicast tree. The nodes in the tree prolong the working time of the wireless sensor network, maintain long-lived multicast data transmission, and balance the energy consumption among nodes.

Description

technical field [0001] The present invention relates to a multicast routing method, more particularly, to a DFM policy-based multicast tree adjustment method suitable for wireless sensor networks. Background technique [0002] With the advancement of microsensor technology, microelectronics technology, wireless communication technology and computing technology, the development of wireless sensor networks (WSN) integrating information collection, processing, wireless transmission and other functions has been greatly promoted. Wireless sensor networks can enable people to obtain a large amount of detailed and reliable information at any time, place and under any environmental conditions, so sensor networks can be widely used in national defense, military, national security, environmental monitoring, traffic management, medical and health, manufacturing industry, anti-terrorism and disaster relief. Wireless sensor network is a new research field of computer science and technol...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L45/16
Inventor 唐晓岚蒲菊华刘睿陈佳刘伟熊璋
Owner 北京航空航天大学深圳研究院
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