A multi-hop access method suitable for underwater acoustic LAN
An access method, local area network technology, applied in the direction of advanced technology, climate sustainability, sustainable communication technology, etc.
Active Publication Date: 2017-05-24
WUHAN UNIV
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Problems solved by technology
When a new node can access the network through multiple relay paths, how to choose an optimal relay path? There are currently no viable solutions to these problems
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[0041] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.
[0042] please see figure 1 A multi-hop access method suitable for underwater acoustic local area networks provided by the present invention includes three steps: a network discovery stage, a relay path determination stage and an association stage; its specific implementation includes the following steps:
[0043] Step 1: When a node needs to access the network, it first broadcasts a network probe request packet network_probe_req to find the available network. The format of the network_probe_req package is as follows figure 2 As shown in (a), it includes th...
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The invention discloses a multi-hop access method suitable for an underwater acoustic local area network. The method includes three steps of networking finding, relay path determination, and correlation. In the network finding step, a to-be-accessed node needing an access to a network finds a query package through a broadcast network at first to detect an accessible network. In the relay path determination step, the invention provides a relay path selection method based on the path service life and energy efficiency, and the method will give priority to the selection of a path that is longer in service life and make the path serve as relay path, wherein a path that is high in energy efficiency is selected to serve a relay path if paths are not much different from each other in service life. In the correlation step, correlation and negotiation between a new node and an access node are achieved. To achieve a multi-hop relay forwarding function, the method performs MAC layer routing by establishing an MAC address forwarding list and querying the list. Through adoption of the method, a node in an underwater acoustic local area network can be accessible to the network through a multi-hop mode, the service life of the network is effectively prolonged, and the energy efficiency of the network is improved.
Description
technical field [0001] The invention belongs to the technical field of underwater acoustic channel sensor networks, and in particular relates to a multi-hop access method suitable for underwater acoustic local area networks. Background technique [0002] With the development of underwater acoustic communication technology, underwater acoustic channel sensor network has attracted great attention from academia and industry. The underwater acoustic channel sensor network is a communication network that uses sound waves to transmit data. It can be widely used in marine environment monitoring, marine scientific data collection, early warning of disasters, and military fields. In recent years, in the field of terrestrial wireless communications, wireless local area networks represented by WiFi networks have achieved great success. The WiFi network has greatly improved the user access to the Internet by providing users with convenient and fast wireless access services. Similarly,...
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IPC IPC(8): H04B13/02H04L12/28
CPCY02D30/00
Inventor 李德识廖子龙陈健
Owner WUHAN UNIV