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Two-stage isomerism clustering underwater wireless sensor network and routing method thereof

A wireless sensor and sensor node technology, applied in network topology, wireless communication, advanced technology, etc., can solve problems such as power consumption limitation, low transmission speed, and long delay of acoustic channel

Inactive Publication Date: 2014-08-27
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the narrow bandwidth, Doppler frequency shift, multipath effect, low transmission speed and other characteristics of underwater acoustic channels, as well as the limitations of battery power supply and economic costs, the construction of underwater wireless communication networks mainly faces the following difficulties: 1) Acoustic The delay of the channel is long, and the speed of sound in water is about 1500m / s, which is 5 orders of magnitude lower than the speed of light in air; 2) the available frequency band is limited; 3) the influence of time-varying multi-channel is more serious; 4) the power consumption is limited, in water The service life of battery-powered network nodes under long-term work is limited; 5) network security is challenged

Method used

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  • Two-stage isomerism clustering underwater wireless sensor network and routing method thereof
  • Two-stage isomerism clustering underwater wireless sensor network and routing method thereof
  • Two-stage isomerism clustering underwater wireless sensor network and routing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0085] Embodiment 1: The scale of nodes is 500, and the data packet size is 500 Bytes. After experimental verification, the experimental results are as follows image 3 shown. From image 3 It can be seen from the figure that compared with the LEACH and MCBED protocols, when the node scale is large, the "TT" protocol makes the node's energy consumption more balanced.

Embodiment 2

[0086] Example 2: 500 nodes are randomly distributed in the monitoring area, and one Sink node is deployed far away from the monitoring area, and the data packet size is 500 Bytes. Experimental results such as Figure 4 shown. From Figure 4 It can be seen that with the increase of the "round number" of periodic clustering, the number of surviving nodes in the "TT" protocol is more than the number of surviving nodes in the LEACH protocol and the MCBED protocol in the period with the same "round number". want more. That is to say, the "TT" protocol increases the "number of rounds" to reach this state. Compared with LEACH and MCBED protocols, "TT" has significantly longer network survival time, and the first node dies later. This shows that "TT" achieves the purpose of balancing node energy consumption and prolonging the network survival time.

Embodiment 3

[0087] Example 3: 500 nodes are randomly distributed, and the initial energy of the nodes is 2J, and one of the secondary cluster head nodes is selected for observation. Experimental results such as Figure 5 shown. From Figure 5 It can be seen that because the "TT" protocol adopts the form of inter-cluster routing, the energy consumption of the cluster head of the "TT" protocol is less than the energy consumption of the cluster head nodes in the LEACH and MCBED protocols.

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Abstract

The invention discloses a two-stage isomerism clustering underwater wireless sensor network and a routing method of the underwater wireless sensor network. The two-stage isomerism clustering underwater wireless sensor network comprises upper-layer sensor nodes, lower-layer sensor nodes, an offshore sink node and a base station on land. All the sensor nodes in a monitoring region of the underwater wireless sensor network form a two-stage isomerism clustering structure. The lower-layer sensor nodes form first-stage clusters and first-stage cluster head nodes. The upper-layer sensor nodes form second-stage clusters and a dynamic cluster head chain. Second-stage cluster head nodes transmit data to the offshore sink node through the dynamic cluster head chain. The offshore sink node is in direct wireless communication with the base station on land, and then the base station transmits the data to a remote control center. Through the method, average energy consumption of the nodes can be effectively reduced, the survival time of the network can be prolonged, and the underwater wireless sensor network is suitable for monitoring an underwater application environment with numerous nodes, high in expandability, more balanced in node energy consumption and suitable for large-scale application.

Description

technical field [0001] The invention relates to a two-level heterogeneous clustering underwater wireless sensor network and a routing method thereof, belonging to the technical field of routing algorithms. Background technique [0002] In recent years, with the deepening of human exploration, development and utilization of the ocean, the rapid development of underwater communication networks has been promoted. Considering the particularity of communication in the marine environment, other devices except large fixed platforms and backbone networks usually use wireless communication. At the same time, among the three energy transmission methods commonly used on land, geomagnetic waves, light waves, and sound waves, sound waves are the most suitable for long-distance transmission in water. Therefore, underwater acoustic wireless communication is usually used in the marine field. However, due to the narrow bandwidth, Doppler frequency shift, multipath effect, low transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/04H04W40/32H04W52/02H04B13/02H04W84/18
CPCY02B60/50Y02D30/70
Inventor 吴迪韩光洁胡钢龙霄汉张选松
Owner HOHAI UNIV CHANGZHOU
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