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Channel sharing method based on primary and secondary matching search in VDES system

A channel sharing and matching search technology, applied in wireless communication, electrical components, network planning, etc., can solve problems such as affecting navigation safety, mutual interference of communication, and matching without considering channel sharing, so as to reduce communication interference and improve signal reception. quality effect

Pending Publication Date: 2022-01-04
葳迪易(苏州)信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the "IALA G1139" recommendation does not consider the matching of channel sharing according to the information transmission request between satellite and ship, ship to ship, that is to say, the proposal uses a random channel sharing method
When the method of random channel sharing is adopted, there may be mutual interference between satellite-to-ship and ship-to-ship communications using the same channel. When the interference is large, it will seriously affect the quality of the received signal in the VDES system, and even affect the safety of navigation

Method used

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  • Channel sharing method based on primary and secondary matching search in VDES system
  • Channel sharing method based on primary and secondary matching search in VDES system
  • Channel sharing method based on primary and secondary matching search in VDES system

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Embodiment 1

[0034] like Figure 1~3 As shown, a channel sharing method based on primary and secondary matching search in a VDES system disclosed by the present invention comprises the following steps:

[0035] Step 1: Initialization of channel sharing;

[0036] like figure 2 As shown, it is assumed that there are M satellite-to-ship information transmission requests in an ad hoc cell of a ship, and these satellite-to-ship information transmission requests are recorded as the main users when the channel is shared, and they are sequentially numbered as p 1 ,p 2 ,...,p M ; There are N ship-to-ship information transmission requests, and these ship-to-ship information transmission requests are recorded as secondary users during channel sharing, numbered sequentially as l 1 , l 2 ,..., l N ,; the number of channels that can be shared by the primary user and the secondary user is Q, which are numbered 1, 2, ..., Q in turn, where 1m The received signal-to-interference-noise ratio of a prim...

Embodiment 2

[0053] Embodiment 2 (experimental example)

[0054] This embodiment is a simulation experiment, comparing the channel sharing method based on primary and secondary matching search of the present invention with the existing random channel sharing method to illustrate the feasibility and effectiveness of the method of the present invention.

[0055] In the simulation, the radius of the self-organizing cell is set to 500 meters, the channels are all Rayleigh channels, all channels obey the circular symmetric complex Gaussian distribution, the channels are independent of each other, the ship obeys the uniform distribution in the self-organizing cell, and the sending power of the ship is 3kW, the satellite transmission power is 1000kW, the satellite orbit altitude is 36000km, the noise variance of all channels is 1, and the number of channels that can be shared is Q=10.

[0056] Figure 4 The "random channel sharing" in the above is an existing random channel sharing method, and t...

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Abstract

The invention belongs to the technical field of wireless communication, and particularly relates to a channel sharing method based on primary and secondary matching search in a VDES system, and the method comprises the following steps: initializing channel sharing; utilizing a channel sharing algorithm based on primary and secondary matching search to carry out channel sharing matching search on information sending requests from the satellite to the ship and from the ship to the ship; and sending the information according to the channel sharing matching result of the satellite-to-ship and ship-to-ship information sending requests. Compared with the existing random channel sharing method, the method provided by the invention takes a satellite-to-ship information sending request as a main user and a ship-to-ship information sending request as a secondary user to perform matching search of the shared channel of the main user and the secondary user, so that the main user and the secondary user of the shared channel both meet the requirement of receiving the signal to interference plus noise ratio. Therefore, the method provided by the invention can reduce the communication interference and improve the quality of the received signal.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a channel sharing method based on primary and secondary matching search in a VDES system. Background technique [0002] With the increasing demand for maritime passenger and cargo traffic, the number of ships sailing at sea continues to increase, and the demand for data communication at sea is also increasing. Therefore, the International Association of Lighthouse Authorities (IALA) proposed the VHF Data Exchange System (VHF Data Exchange System, VDES), to comprehensively improve the communication capabilities between ships, satellites, and coasts, and provide security and richer services for maritime transportation. [0003] In the VDES system, ships that are closer together form self-organizing cells in a self-organizing manner. According to the frequency band division in the "IALAG1139" recommendation, in an ad hoc cell, the channels numbered 2024, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14
CPCH04W16/10H04W16/14
Inventor 李洪星李娜刘志磊智慧李瑞雪张景峰
Owner 葳迪易(苏州)信息科技有限公司
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