A real-time scheduling method and system for vhf shore station

Abstract

The present invention proposes a method and system for real-time dispatching of VHF shore stations. The method includes: obtaining the position information of the ship; selecting the VHF base station with the shortest distance from the ship to establish a VHF network; detecting and judging whether the signal quality meets the set threshold, if If it matches, then receive the command of the dispatch center to dispatch the ship; measure the interference from the adjacent VHF base station, select the interfering VHF base station to form a set, and adjust the transmission power of the interfering VHF base station in the set to make it reach the optimal transmission power; check the communication signal quality again , and judge whether the signal quality meets the set threshold, and if so, receive an instruction from the dispatch center for dispatch. The invention automatically adjusts the transmission power of the interfering VHF base station according to the distance between the receiving antenna of the ship and the interfering VHF base station, reduces the interference to communication signals without affecting the normal operation of other VHF base stations, and has high communication quality.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for real-time scheduling of VHF shore stations. Background technique [0002] VHF (Very High Frequency, VHF) ship-to-shore communication network is a set of dedicated high-frequency channels set up according to the needs of daily local maritime rescue communications. The system uses multiple sets of VHF base stations to complete the communication coverage of the area along the line. The dispatching center can call the ships in the jurisdiction, and the ships in the jurisdiction can also call the dispatching center, which is convenient and quick, and responds to all calls. This channel is used for daily waiting channel to receive rescue information from the water at any time. [0003] The VHF ship-to-shore communication network consists of ship berth equipment, VHF base station and back-end equipment. The berth equipment is mainly used for the communicati...

AI Technical Summary

Problems solved by technology

[0004] At present, the communication coverage of the VHF base station is related to the antenna height, transmission power and surrounding obstacles. The VHF base station and the ship station equipment can only communicate with each other when they cover each other. When the position of the ship is not known, the VHF base station closest to the ship cannot be determined, and the optimal scheduling of the system cannot be realized; in addition, since there are multiple VHF base stations covering the ship, the signals between multiple VHF base stations will cause interference , affecting call quality

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