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Routing protocol and routing method for achieving VDES

A routing protocol, protocol technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problem of no solution, achieve the effect of high network bandwidth, good maritime communication, and ensure reliability

Inactive Publication Date: 2018-05-18
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the system is still in the concept stage, and there is no actual plan

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  • Routing protocol and routing method for achieving VDES
  • Routing protocol and routing method for achieving VDES
  • Routing protocol and routing method for achieving VDES

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0029] A routing protocol used to implement VDES, such as Image 6 As shown, the routing protocol adopts the IEEE802.11s protocol standard. The routing protocol is based on the structure of the Open System (OSI) interconnection seven-layer model. The protocol includes a physical layer, a link layer, a network layer, and a transmission layer;

[0030] Among them, the physical layer is used to provide a physical carrier that transmits and receives the original bit stream, and is responsible for transmitting the bit stream to the data link layer, modulating and encoding the original bit stream, and passing the modulated and coded information through FM is sent to the transmitter for transmission; the physical layer is also used to demodulate and decode the bit stream received by the receiver;

[0031] The link layer is used to solve data packing, error corr...

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Abstract

The invention provides a routing protocol for achieving a VDES. The routing protocol adopts an IEEE802.11s protocol standard, is of the structure of an open system interconnection seven-layer model and comprises a physical layer, a link layer, a network layer and a transmission layer; and the routing protocol has the automatic networking capacity and can send received information to all nodes in the coverage range of the protocol, match addresses of the various nodes with destination addresses in routing information, correct a path according to routing table information and provide a reliableand lowest-cost path between a source node and a destination node. Each node generates a routing table, the routing tables are updated once at set intervals and sent to all the nodes in the coverage range, and the path is automatically corrected according to the routing table information. In this way, the transmission range of roadbed signals can be relatively widened, and the coverage range of anexisting land broadband wireless network is expanded to the sea.

Description

Technical field [0001] The present invention relates to the technical field of ship communication, in particular to a routing protocol and routing method for implementing VDES. technical background [0002] The Automatic Ship Identification System (AIS) is recognized as an important system for maritime safety. However, in recent years, as the demand for AIS system communication in the very high frequency (VHF) range has increased, the VHF data link load has increased sharply, which will lead to The occurrence of serious problems such as information congestion affects navigation safety. Therefore, there is an urgent need to allocate new frequencies for emerging applications based on AIS technology to reduce the load on AIS VHF data links. [0003] Therefore, the International Navigational Standards Association (IALA) E-Navigation Committee proposed the concept of VDES (VHF Data Exchange System) to solve the overload problem of AIS in the VHF data link and the seamless transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/741H04L12/721H04L29/08H04W40/24H04W84/18H04L45/74
CPCH04L45/12H04L45/745H04L67/12H04W40/248H04W84/18
Inventor 金华标戴玉俊
Owner WUHAN UNIV OF TECH
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