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Data collection task oriented underwater sound network media access control method

A technology for media access control and underwater acoustic network, applied in the field of communication, can solve the problems of inappropriate underwater environment data collection tasks, not supporting mobile node access, etc., to improve network throughput, improve transmission throughput, improve fairness effect

Active Publication Date: 2017-08-18
ZHEJIANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to propose a kind of data collection task-oriented underwater acoustic network media access control method for the existing underwater acoustic sensor network MAC protocol that is not suitable for underwater environment data collection tasks and does not support the access of mobile nodes

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  • Data collection task oriented underwater sound network media access control method
  • Data collection task oriented underwater sound network media access control method
  • Data collection task oriented underwater sound network media access control method

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0037] Specifically, it is realized through the following steps:

[0038] Step (1) Network initialization:

[0039] Such as figure 1 As shown, establish network node topology information: four underwater acoustic sensor nodes A, B, C, D and one sink node sink are connected through underwater acoustics, and the underwater acoustic sensor node D is a mobile node to form a centralized style network. Each underwater acoustic sensor node broadcasts its own location information, and the sink node calculates the propagation delay τ with the underwater acoustic sensor nodes A, B, C, and D according to the received location information sink,A , τ sink,B , τ sink,C , τ sink,D , the propagation delay between the sink node and the underwater acoustic sensor node is the ratio of the distance between the sink node and the underwater acoustic sensor no...

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Abstract

The invention relates to a data collection task oriented underwater sound network media access control method. An existing method is inapplicable to a data collection type underwater sound sensor network. The method provided by the invention comprises the steps that a data collection type underwater sound sensor network model is established; when an underwater sound sensor node has a sending demand, the underwater sound sensor node makes a channel appointment to a sink node, and the sink node actively invites other underwater sound sensor nodes to join this round of transmission and carries out transmission scheduling on response packets; after the underwater sound sensor nodes receive invite packets, if the underwater sound sensor nodes have the sending demands, the underwater sound sensor nodes send the response packets according to a scheduling table; the sink node carries out data packet scheduling and broadcasts sequence packets; after the underwater sound sensor nodes receive the sequence packets, the underwater sound sensor nodes sends the data packets to the sink node according to the scheduling table; and the sink node receives the data packets completely and then broadcasts acknowledgement packets. The method provided by the invention is applicable to the data collection type underwater sound sensor network, the network throughput and a channel appointment success rate are improved, and the method is also applicable to the data collection type underwater sound sensor network with mobile nodes.

Description

technical field [0001] The invention belongs to the field of communication technology, in particular to the field of a Media Access Control (MAC) protocol, in particular to a data collection task-oriented media access control method for an underwater acoustic network. Background technique [0002] In recent years, my country has paid more and more attention to the detection and development of the ocean, and the related technologies of underwater acoustic sensor networks have also developed rapidly, and are widely used in ocean detection, such as ocean current monitoring, environmental data collection and disaster warning. Due to the extended propagation time, high bit error rate and limited transmission bandwidth of underwater acoustic channels, MAC protocol design is an important challenge for data-collecting underwater acoustic sensor networks. [0003] The MAC protocol of underwater acoustic sensor network can be roughly divided into two types according to the channel occ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/04H04W28/26H04W74/08H04W84/18
CPCH04W28/021H04W28/26H04W74/08H04W84/18
Inventor 陈惠芳谢磊邓敏
Owner ZHEJIANG UNIV
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