Distributed multi-jump energy-saving communication method in wireless sensor network

A wireless sensor and distributed technology, applied in wireless communication, network topology, energy-saving ICT, etc., can solve the problems of network life cycle extension, network energy consumption, etc., to avoid conflicts, reduce energy consumption, and easy to achieve

Active Publication Date: 2011-04-20
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

For this reason, a routing tree algorithm is proposed to solve the problem of cluster head data transmission to the base station. Practice has proved that this method makes the selected cluster head more suitable for data forwarding tasks, the network energy consumption is smaller, and the network life cycle is further extended.

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  • Distributed multi-jump energy-saving communication method in wireless sensor network
  • Distributed multi-jump energy-saving communication method in wireless sensor network
  • Distributed multi-jump energy-saving communication method in wireless sensor network

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Embodiment Construction

[0013] The invention designs a distributed multi-hop energy-saving communication method based on backoff mechanism in a wireless sensor network. The method includes the following steps.

[0014] 1. Select the cluster head.

[0015] Timer control determines that the node with the largest remaining energy in the network becomes the cluster head first. In the process of cluster head selection, the node with higher energy becomes the cluster head first, and the nodes with the same energy will not collide in the process of competing for the cluster head, and the cluster heads are evenly distributed. In the process of becoming a cluster head, nodes with the same energy have the same probability of becoming a cluster head, avoiding unnecessary waste of energy, specifically, in the timer Add a random component rand(0, α) (representing a random number between [0, α]) to avoid conflicts between nodes with the same residual energy, take α=0.05, E max is the initial energy of the node...

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Abstract

The invention relates to a method for carrying out distributed multi-jump energy-saving communication in a wireless sensor network. In a process of cluster head selection, a node with large energy is preferentially used as a cluster head, and cluster heads with the same energy can not collide in a process of cluster head competition, thereby the cluster heads are uniformly distributed. In a process of transmitting data to a base station from the cluster heads, the cluster heads uniformly distributed in the network constitute a route tree, and the quantity of cluster head nodes directly communicating with the base station is reduced in the mode of multi-jump transmission, thereby energy consumption is further reduced. Simultaneously, the method also limits the shortest transmitting distance of a multi-jump route, lowers the circuit consumption of a middle node, reduces the transmission times of multi-jump data, saves the energy consumption of the network, weakens the hot problems in the network, saves network energy, keeps network load balanced and prolongs the life cycle of the network.

Description

technical field [0001] The invention relates to a wireless sensor network communication technology, in particular to a distributed multi-hop energy-saving communication method in a wireless sensor network. Background technique [0002] In today's era of rapid development of information technology, the Internet provides people with a fast communication platform, which greatly facilitates people's information exchange. The status quo of perceiving information has greatly improved the accuracy and sensitivity of human beings to obtain information. As a revolutionary technology in the information age, wireless sensor networks can enable people to obtain a large amount of detailed and reliable information at any time, any place and under any environmental conditions, and truly realize the concept of "ubiquitous computing". Wireless sensor network is a new research field of computer science and technology, which has a very broad application prospect, and its appearance has arouse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W52/02H04W84/18
CPCY02B60/50Y02D30/70
Inventor 尚凤军
Owner CHONGQING UNIV OF POSTS & TELECOMM
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