Underwater sensor network MAC (media access control) protocol implementation method based on time-space fairness

An underwater sensor and protocol implementation technology, applied in network topology, transmission system, advanced technology, etc., can solve problems affecting network throughput, long handshake time, etc., and achieve the effects of shortening handshake time, prolonging life cycle, and low energy consumption

Inactive Publication Date: 2013-09-18
JIANGSU UNIV
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AI Technical Summary

Problems solved by technology

The SF-MAC protocol uses a fixed RTS competition period, and the handshake time is long, which seriously affects the throughput of the network.

Method used

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  • Underwater sensor network MAC (media access control) protocol implementation method based on time-space fairness
  • Underwater sensor network MAC (media access control) protocol implementation method based on time-space fairness
  • Underwater sensor network MAC (media access control) protocol implementation method based on time-space fairness

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Embodiment Construction

[0036] The present invention is analyzed below in conjunction with accompanying drawing and specific example and result:

[0037] The invention adopts the Aqua-sim software package developed by the underwater sensor network laboratory of the University of Connecticut as the experimental platform, and uses C++ and OTcl (object-oriented Tcl language) as the development language.

[0038] In the monitoring application of sensor networks, sensor nodes transmit a large amount of sensing data to a small number of data center (sink) nodes through self-organization and multi-hop communication, and the data transmission presents an obvious funnel shape, that is, many-to-one communication mode. figure 1 A network model is described that employs a single receiving node (sink node) and multiple sending nodes (competing nodes), all of which are randomly distributed within the communication range of the receiving node.

[0039] For energy consumption, the parameters of the acoustic modulation...

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Abstract

The invention belongs to an underwater sensor network data transmitting technology, and particularly provides a response-first-request underwater sensor network MAC (media access control) protocol (RFR-MAC) by aiming at spatial uncertainty caused by underwater sensor network underwater acoustic long propagation delay characteristics to realize time-space fairness. The method comprises the following steps of dynamically adjusting an RTS (request to send) competition stage to determine node priority transmitting data which is firstly requested to be sent in time, introducing a CTS (clear to send) delay stage to delay to send a CTS control frame, thereby avoiding conflicts of data frames, using a CTS backoff mechanism to prolong the CTS delay stage, and meanwhile, adopting a competition backoff mechanism to further improve the time-space fairness of competition channels. The experiment shows that the protocol has good time-space fairness, and meanwhile, the protocol has good throughout capacity, and lower energy consumption and time delay.

Description

technical field [0001] The invention belongs to the underwater sensor network data transmission technology, and specifically aims at the time-space uncertainty caused by the underwater sensor network's long propagation delay characteristics of underwater sound, and proposes a response to the first request underwater sensor network MAC protocol (RFR-MAC). Achieving spatio-temporal fairness. Background technique [0002] With the development of computer technology, microelectronics technology and communication technology, the related technologies of Underwater Wireless Sensor Networks (UWSNs) have also developed rapidly, and are widely used in marine data collection, pollution detection, marine detection, disaster early warning, aid navigation and strategic monitoring. In order to ensure the efficient transmission of underwater data, MAC (Media Access Control) protocol design is an important aspect of underwater sensor network research. It has a direct impact on underwater ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04B13/02H04W84/18
CPCY02D30/70
Inventor 熊书明袁成苏远王良民单田华严轶锋关江辉
Owner JIANGSU UNIV
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