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Multichannel media access control method of hydroacoustic sensor network

A medium access control and underwater acoustic sensor technology, applied in network traffic/resource management, ultrasonic/acoustic/infrasonic transmission system, transmission system, etc., to achieve the effect of improving multiplexing rate and throughput rate

Active Publication Date: 2014-01-22
厦门仪信科学仪器有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a multi-channel media access control method for underwater acoustic sensor networks that can solve problems such as channel synchronization, multi-channel hidden terminals and channel allocation.

Method used

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  • Multichannel media access control method of hydroacoustic sensor network
  • Multichannel media access control method of hydroacoustic sensor network
  • Multichannel media access control method of hydroacoustic sensor network

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Embodiment Construction

[0029] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0030] 1) if figure 1As shown, the horizontal axis represents time, represented by the symbol t, and the vertical axis represents frequency, represented by the symbol f. The protocol divides the time axis into repeated frames, represented by frame 1, frame 2, ..., each frame represents a beacon period, and each beacon period is divided into three stages: transmission negotiation, channel selection and data transmission. The transmission negotiation phase consists of a transmission request, transmission request propagation delay, transmission response, and transmission response propagation delay. The transmission request duration is T RTN Indicates that the transmission response time is expressed in T ATN Indicates that the propagation delay of the transmission request and the propagation delay of the transmission response are expressed in τ max exp...

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Abstract

The invention discloses a multichannel medium access control method of a hydroacoustic sensor network, and relates to a hydroacoustic sensor network. The problem of channel synchronization of a multichannel-based hydroacoustic sensor network MAC (media access control) layer protocol is solved by a synchronized scheduling mechanism; a timeline is divided into beacon intervals by the protocol in the synchronized scheduling mechanism; each beacon interval is divided into three stages of transmission coordination, channel selection and data transmission; control packets are transmitted in the stages of transmission coordination and channel selection; data packets are transmitted in the stage of data transmission; and the control packets sent by each node are effectively intercepted by other adjacent nodes. According to the multichannel medium access control method of the hydroacoustic sensor network, the problem of multichannel hidden terminal is solved through collection of working states of adjacent nodes, receiving nodes are used as vision, working-state information of disturbance nodes in the adjacent nodes is intercepted, and channels different from the disturbance nodes are selected for data transmission; and besides, the reuse rate and the throughput rate of space are improved.

Description

technical field [0001] The invention relates to an underwater acoustic sensor network, in particular to a multi-channel media access control method for the underwater acoustic sensor network. Background technique [0002] In a wireless network environment, due to the limited transmission range of network nodes, there are neighbor nodes that are outside the transmission range of the sending node but within the transmission range of the receiving node. Such nodes are called hidden terminals; Neighbor nodes that are within the transmission range of the sending node but outside the range of the receiving node are called exposed terminals. Since the sending node cannot perceive the existence of the hidden terminal, the data packet sent to the receiving node may be interfered by the data packet sent by the hidden terminal at this time; at the same time, the exposed terminal delays sending the data packet because it perceives the data packet sent by the sending node, although At t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/18H04L29/06H04B13/02H04B11/00
Inventor 王德清许茹胡晓毅许芳苏为解永军陈华宾
Owner 厦门仪信科学仪器有限公司
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