Data forwarding method based on random walk backup and node cooperation

A technology of random walking and forwarding method, applied in the field of network communication, can solve the problems of high cost of mobile nodes, large network delay, limited communication radius of wireless sensor nodes, etc. Effect

Inactive Publication Date: 2013-12-25
XIDIAN UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, and propose a data forwarding method based on random walk backup and node cooperation, so as to avoid the difficulty of laying and maintaining wired links,

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  • Data forwarding method based on random walk backup and node cooperation
  • Data forwarding method based on random walk backup and node cooperation
  • Data forwarding method based on random walk backup and node cooperation

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[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings.

[0039] Reference attached figure 1 , The implementation steps of the present invention are as follows:

[0040] Step 1. In the S×S plane, randomly throw N homogeneous wireless sensor nodes to construct a random wireless sensor network, where S=200m, 400≤N≤700, and the gateway node sink is arranged in the center of the network position.

[0041] Step 2. In the constructed wireless sensor network, all the nodes in the wireless sensor network store the sensed data in their respective memories. The network needs to implement a data backup strategy. The nodes will back up the sensed data in a random walk mode. Specific steps as follows:

[0042] (2a) All nodes in the wireless sensor network collect and store the sensed data in the memory of the node;

[0043] (2b) Find all nodes th...

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Abstract

The invention discloses a data forwarding method based on random walk backup and node cooperation, mainly solving the problems of high cost, low universality and difficult practical application of the traditional survivable technology. Characteristics of communication of a wireless sensor network are fully considered in the method, in a data perceptual stage, nodes needing to execute a data backup strategy are selected, data perceived by the nodes are backed-up through random walk of the data among the nodes, so that the survivability of the network is improved; and in a data transmission stage, the nodes of the sensor broadcast a packet with a data bit zone of 1 in a storage and calculate the data bit zone of the packet in the storage so as to realize cooperative forwarding of the data, reduce additional data transmission quantity caused by data backup and lower average path length of the network. The invention has the characteristics of high survivability, good universality, simplicity for realization and low cost, and can be used for data collection and transmission of a large-scale wireless sensor network.

Description

technical field [0001] The invention belongs to the technical field of network communication and relates to a data forwarding method, in particular to a data forwarding method based on random walk backup and node cooperation, which can be used to improve the fault tolerance of a wireless sensor network. Background technique [0002] Wireless sensor network is a comprehensive intelligent information system that integrates information collection, information transmission, and information processing. It is a hot spot in the research and development of the current information field. , medical monitoring, space exploration, urban traffic management, warehouse management and other military and civilian fields have a wide range of applications. In the practical application of wireless sensor networks, it is generally necessary to deploy a large number of wireless sensor nodes. Since nodes often work in harsh environments and usually use batteries with limited energy to provide ener...

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Application Information

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IPC IPC(8): H04W24/04H04W84/18
Inventor 齐小刚马士强刘立芳郑耿忠冯海林
Owner XIDIAN UNIV
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