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Wireless sensor network node autonomous decision-making routing protocol

A wireless sensor and sensor node technology, applied in network topology, wireless communication, data exchange network, etc., can solve the problem of uneven energy consumption of nodes in each district

Active Publication Date: 2018-10-12
LIAONING UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

However, the rotation of the cluster head is limited by the partition, which makes the energy consumption of the nodes in each district uneven.

Method used

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  • Wireless sensor network node autonomous decision-making routing protocol
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  • Wireless sensor network node autonomous decision-making routing protocol

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Embodiment Construction

[0059] The present invention provides a wireless sensor network node autonomous decision routing protocol (Node Autonomous Decision routing protocol, NAD), the protocol includes the following steps:

[0060] Step 1: Network initialization: the sink node broadcasts MSG_ADV message to all sensor nodes to start network operation; all sensor nodes receive the MSG_ADV message broadcast by the sink node, and calculate the distance from the sink node according to the RSSI received signal strength;

[0061] Step 2: Neighbor discovery: All nodes broadcast MSG_HELLO messages to their neighbor nodes with the initial communication radius for neighbor discovery, the message contains the distance between the node itself and the Sink node; all sensor nodes receive the MSG_HELLO messages broadcast by their neighbor nodes, and receive signals according to RSSI Intensity calculates the distance from neighbor nodes and creates a neighbor node information table;

[0062] Step 3: Establish a virtu...

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Abstract

The invention relates to a wireless sensor network node autonomous decision-making routing protocol, comprising: for the problem of unbalanced energy consumption of a wireless sensor network node, dividing the neighborhood space of the node; selecting the next hop according to the virtual coordinate parameter of the adjacent node by adopting the proposed virtual coordinate model to accelerate theconvergence speed of the path to the Sink node; constructing a path tree rooted at the Sink node by using the distributed computing and self-organizing communication; and optimizing the path tree according to the remaining energy information of the node by using the proposed local energy equalization strategy. By performing the simulation under the OMNeT++ platform, compared with the DEBUC protocol and the UAUC protocol, the NAD protocol is extended by 71.8 percent and 66.5 percent respectively in the time of the first node death, the average residual energy of the node is increased by 45.8 percent and 27.9 percent respectively, and the remaining energy standard deviation of the node is increased by 51.2 percent and 34.2 percent respectively. The simulation results show that the NAD protocol is capable of effectively extending the network life cycle and balancing the node energy consumption.

Description

technical field [0001] The invention relates to a wireless sensor network node autonomous decision-making routing protocol, which belongs to the technical field of wireless sensor networks. Background technique [0002] Wireless Sensor Network (WSN) is an intelligent dedicated network system composed of a large number of multi-functional, low-power, and cheap sensor nodes. The nodes use self-organizing wireless communication to transmit information to each other and cooperate to complete specific functions. Usually sensor nodes have very limited resources in terms of energy, computing power, storage capacity, and communication bandwidth. How to set up an effective energy balance strategy and control the energy consumption of nodes has become the focus of wireless sensor network routing protocol research. [0003] Among the existing routing protocols, the LEACH (Low Energy Adaptive Clustering Hierarchy, LEACH) protocol is a typical clustering routing protocol. However, its c...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04W40/10H04W40/24H04W76/11H04W76/40H04W84/18
CPCH04L41/12H04L41/145H04W40/10H04W40/246H04W84/18H04W76/11H04W76/40Y02D30/70
Inventor 任秀丽孙佳美
Owner LIAONING UNIVERSITY
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