Gradient-based wireless sensor network (WSN) topology maintenance method and packet forwarding method

A wireless sensor network and wireless sensor technology, applied in the field of wireless sensor networks, can solve problems such as insufficient consideration, achieve high routing performance, control protocol overhead, and maintain the effect of routing performance

Inactive Publication Date: 2011-06-08
江苏中科泛联物联网科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This feature does not fully consider the "Multi-to-one" characteristics of wireless sensor network data, that is, the data reporting from many sensor nodes to a single sink

Method used

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Embodiment Construction

[0014] The invention is oriented to a wireless sensor network composed of multiple sensor nodes, single or multiple sink nodes. A wireless sensor network with multiple sink nodes can still be divided into multiple sensor nodes and single sink nodes in each area through the Voronoi Scoping method, and each sensor node belongs to the area where its nearest sink node is located . Therefore, the present invention has general significance, the following is the case of a single sink sensor network.

[0015] Each sensor node has power control capability, and can adaptively adjust the transmission power according to the distance of the communication neighbors. Therefore, the topology maintenance method of the present invention belongs to the power control type topology maintenance method. For a node x, its remaining energy is recorded as Ex. For a link (u, v) in the network, the minimum power required to achieve successful communication from u to v is denoted as Puv.

[0016] ...

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Abstract

The invention discloses a gradient-based wireless sensor network (WSN) topology maintenance method, and relates to a WSN. The method is characterized by comprising the following steps: path cost is obtained by a reverse path cost calculation method so as to establish gradient; and each node periodically maintains links of a father node and a standby father node based on the gradient. In the case of packet forwarding, one node delivers a packet into the node with the minimum path cost in feasible next-hop. In the invention, the links are maintained by a gradient reduction method according to data aggregation characteristics of the WSN, which can well adapt to the WSN with strong link dynamic property, control protocol overhead and keep high routing performance.

Description

technical field [0001] The invention relates to a wireless sensor network, in particular to a data transmission method of the wireless sensor network. Background technique [0002] Wireless sensor network has the characteristics of harsh wireless transmission environment and strong topology dynamics. Topology maintenance is an important technology in wireless sensor network. Efficient topology maintenance technology can improve the reliability and real-time performance of data transmission. The existing topology maintenance technologies are mainly divided into two categories. One is the topology control method based on power regulation. By controlling the transmission power of each sensor node, a sparse, connected and other good network topology is generated. This type of technology includes LMST , LSPT, CBTC-(θ), CONNNECT and other algorithms. The first three algorithms are localized algorithms, and the fourth is a centralized algorithm based on global topology informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/18H04W40/02
CPCY02D30/70
Inventor 赵壮高雪王嵚
Owner 江苏中科泛联物联网科技股份有限公司
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