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Underwater acoustic communication method for time slot adaptive selection based on length of distance

An adaptive selection, underwater acoustic communication technology, applied in wireless communication, electrical components, network topology, etc., can solve problems such as low transmission efficiency

Active Publication Date: 2016-09-07
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to avoid collisions, and to avoid the problem of hiding and exposing nodes, there is a large amount of handshake time in the contention-based access protocol, resulting in low transmission efficiency

Method used

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  • Underwater acoustic communication method for time slot adaptive selection based on length of distance
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  • Underwater acoustic communication method for time slot adaptive selection based on length of distance

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Embodiment Construction

[0035] The technical scheme adopted in the present invention is:

[0036] The first step: Determine the master node and slave node in the cluster. The master node is responsible for summarizing and transmitting data, and the slave node is responsible for collecting and transmitting data to the master node. Number the slave nodes in the cluster, and the number represents the ID number of the corresponding node. Suppose A cluster has 10 slave nodes, and the radius of the cluster is 1km;

[0037] Step 2: Design three frame types: broadcast frame, control frame and data frame. The function of the broadcast frame is to notify the slave node to adjust the data transmission time, and reduce or avoid data collisions caused by slave node position drift, propagation delay jitter, etc. , the function of the control frame is to respond to the uplink data of the slave node, confirm the success of reception or request retransmission, and the data frame is the collected data sent from the sl...

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PUM

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Abstract

The invention relates to an underwater acoustic communication method for time slot adaptive selection based on the length of distance. The objective of the invention is to provide a time slot adaptive selection underwater acoustic communication method. In order to make the most of the characteristics of underwater acoustic communication, a protocol is made in a following way: firstly measuring the data transmission time between each slave node and a main node; forming a queue relation according to the duration of the transmission time; making the most of the difference of the lengths of distances, forming the interlacing of time when the data of the slaves nodes reaches the main node, and avoiding the collision of arriving data. In order to improve the success rate of an initialization stage, a delay coefficient is manually generated based on a random algorithm, and the handshaking data collision can be effectively avoided. Moreover, the transmission time is effectively saved, the transmission period is shortened, and the transmission efficiency is improved.

Description

Technical field: [0001] The invention belongs to the technical field of underwater acoustic sensor communication, and specifically relates to a communication method for an underwater acoustic sensor network aiming at a centralized topology structure, which determines the sending order and sending time slot according to the distance between nodes, and simplifies the synchronization link of the sensor network , effectively saving data transmission time. Background technique: [0002] The underwater communication network is a distributed, multi-node, and large-area underwater three-dimensional network composed of sensor nodes and sea buoy nodes deployed underwater. It can collect and process information and relay it through underwater communication nodes. An integrated system that communicates back to land-based or ship-based information control centers. [0003] The radio communication method commonly used on land uses electromagnetic waves as the carrier. When electromagneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/04H04W84/20
CPCH04W74/04H04W84/20
Inventor 王好贤周志权梁益
Owner HARBIN INST OF TECH AT WEIHAI
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