CN107241768B - Self-adaptive wireless communication point-to-multipoint access method for communication system between ship and shore station - Google Patents
Self-adaptive wireless communication point-to-multipoint access method for communication system between ship and shore station Download PDFInfo
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- CN107241768B CN107241768B CN201710598547.XA CN201710598547A CN107241768B CN 107241768 B CN107241768 B CN 107241768B CN 201710598547 A CN201710598547 A CN 201710598547A CN 107241768 B CN107241768 B CN 107241768B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/24—Negotiation of communication capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/283—Power depending on the position of the mobile
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
Abstract
The invention discloses a self-adaptive wireless communication point-to-multipoint access method for a communication system between a ship and a shore station. The method of the invention can dynamically allocate the communication frequency points by selecting the communication system and the communication channel of the shore station wireless communication equipment, thereby improving the modularized station building expansion capability of the shore station wireless communication equipment, improving the frequency spectrum range of sea surface wireless application and improving the access capability of the multi-system wireless terminal of the ship.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to a communication method between a ship and a shore station.
Background
Ship-shore wireless communication shore stations typically have a number of regimes including, for example: the 802.11 system, the 802.16 system, the 802.20 system, the LTE system, and the like. The conventional method is that a shore-based station works under a certain wireless system, a frequency band, a frequency point and a modulation mode are defined, and a mobile access point is adapted to the wireless network setting of the shore station by a mobile ship station under a wireless networking protocol by detecting wireless signals, so that point-to-multipoint access is realized, and unified management is facilitated. The conventional wireless access method has the following disadvantages: the base station is limited to work in a single frequency band and a single protocol, and a plurality of frequency bands cannot be comprehensively utilized, so that the contradiction between the ship access quantity and the distance is serious.
For example, patent application 201210397265.0 discloses an offshore broadband wireless communication system, which can realize broadband wireless communication between moving vessels on the sea surface, and solve the problems of narrow communication bandwidth, short communication distance, unstable communication link (swaying of ship body) and the like when the existing communication system is used between vessels on the sea surface. The offshore broadband wireless communication system mainly comprises a set of central station and a plurality of sets of mobile stations, wherein the central station and the mobile stations are respectively installed on different ships, and the ship on which the central station is installed can communicate with any ship on which the mobile stations are installed. The central station and the mobile station have the same structure and comprise an antenna, an outdoor unit, an indoor unit and a network switch. In order to meet the requirements of long-distance and broadband transmission in a special environment on the sea surface, the transmitting frequency of an antenna in the system is in a frequency band of 430 MHz-860 MHz; in order to resist sea surface storm swing and ensure the stability of a communication link, the antenna in the system adopts an omnidirectional antenna integrating receiving and transmitting, and two antennas with the same performance form a V shape. The system also adopts the traditional wireless communication mode, and can not solve the problem that the base station is limited.
Disclosure of Invention
Aiming at the defects in the technology, the invention aims to provide a communication system adaptive wireless communication point-to-multipoint access method between a ship and a shore station, which can adaptively and dynamically access multi-frequency point-to-multipoint mobile wireless equipment, can adjust the applied wireless system according to actual conditions, meet the requirement of communication transmission and solve the problem that a base station is limited to a single frequency band and cannot be comprehensively utilized in a protocol.
The invention also aims to provide a self-adaptive wireless communication point-to-multipoint access method for the communication system between the ship and the shore station, which can be widely applied to multi-system wireless communication equipment, jump out frequency band limitation and communication protocol limitation, and even utilize channels and frequency points in the same communication system to dynamically and synchronously adjust and adapt in a large range, thereby greatly utilizing the wireless spectrum characteristics and improving the range and distance of accessing the ship to the maximum.
To achieve the above object, the present invention is achieved as described above.
A self-adaptive wireless communication point-to-multipoint access method for a communication system between a ship and a shore station is characterized in that the method firstly judges wireless equipment information such as a wireless communication system, a communication channel, a frequency point and the like needing to be accessed to the ship, and then dynamically and synchronously adjusts corresponding information of the shore station to realize multipoint access of a remote mobile ship station. The method of the invention can dynamically allocate the communication frequency points by selecting the communication system and the communication channel of the shore station wireless communication equipment, thereby improving the modularized station building expansion capability of the shore station wireless communication equipment, improving the frequency spectrum range of sea surface wireless application and improving the access capability of the multi-system wireless terminal of the ship.
The working principle of the invention is as follows: the method comprises the following steps of collecting wireless equipment information of a ship station through an out-of-band network by using a wireless network management system (hereinafter referred to as network management), wherein the out-of-band network can be a satellite communication network, an AIS network, a VHF network, a Beidou network, a short-wave single-sideband network and the like, and the ship station wireless equipment information contains necessary information for wireless access handshake connection, such as: the system comprises a wireless device communication system, a frequency band, a frequency point, transmission power and the like, wherein a webmaster selects a base station transceiver which can be accessed to the wireless device communication system according to the device characteristics of a ship station, synchronously adjusts the device parameters of both sides of a ship and a shore according to the ship and shore distance, the frequency characteristics and the like, quickly and accurately completes interconnection of ship and shore devices, and realizes point-to-multipoint dynamic access of ship and shore wireless communication.
Therefore, the method comprises the following specific implementation steps:
101. after receiving a network access application signal of a ship, a shore station sends the received signal to a wireless network management system;
specifically, the wireless network management system can be used for analyzing the type and model of the wireless access equipment used by the ship (including equipment in 802.11 system, 802.16 system, 802.20 system, LTE system and the like); and finding out receiving equipment corresponding to the shore station according to the equipment type and model of the ship station, and sending the frequency point and the protocol analyzed by the wireless network management system to the shore station.
102. Using out-of-band networks, such as: the method comprises the following steps of informing a ship station of frequency points and protocols to be used by a satellite communication network, an AIS network, a VHF network, a Beidou network, a short-wave single-sideband network and the like;
103. after the shore station and the ship station receive the corresponding use frequency points and the corresponding protocols, the equipment of the shore station and the ship station are respectively adjusted, and the antennas are adjusted to point to each other;
104. when the same equipment, communication protocol and frequency point are used for the shore station and the ship station, the ship shore connection is completed through heartbeat detection once the heartbeat of the other side is detected.
Since the vessel is moving all the time, it is necessary to synchronize the vessel and shore at the same time.
The method further comprises the following steps:
105. after the ship shore connection is completed, the wireless network management system calculates the ship shore distance in real time, and calculates the adaptive channel bandwidth and the transmitting power according to the characteristics of equipment and the strength of signals;
106. comparing the channel bandwidth and the transmitting power, judging whether the channel bandwidth and the transmitting power change, and if the channel bandwidth and the transmitting power change, immediately informing a shore station and a ship station;
107. correspondingly adjusting channel bandwidth and transmitting power by the shore station; adjusting the transmitting power of the ship station; keeping the communication balanced up and down;
108. the ship station also sends the real-time position of the ship station to the shore station, and the calculation of the wireless network management system is kept correct.
The invention has the advantages that the shore station can be widely applied to multi-system wireless communication equipment, frequency band limitation and communication protocol limitation are skipped, and even the utilization of channels and frequency points in the same communication system can be dynamically adjusted and adapted in a large range in a synchronous way, so that the wireless spectrum characteristics are utilized to the maximum extent, and the range and the distance of accessing to a ship are improved to the maximum.
Drawings
Fig. 1 is an access structure block diagram of a ship-shore wireless communication shore station multi-body braking state multi-frequency point-to-multipoint access method implemented by the invention.
Fig. 2 is a flow chart of a multi-body braking state multi-frequency point-to-multi-point access method of a ship-shore wireless communication shore station realized by the invention.
Fig. 3 is a flow chart of the ship-shore synchronization realized by the invention.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, a network architecture diagram of a multi-system dynamic multi-frequency point-to-multipoint access method for a ship-shore wireless communication shore station according to the present invention is shown.
Fig. 2 is a dynamic access flow chart of the multi-system of the ship-shore wireless communication shore station realized by the invention. As shown in the figure, the specific process of the invention is as follows:
step 1, after a shore station receives a network access application signal of a ship, the received signal is sent to a wireless network management system; the type and model of the wireless access equipment used by the ship can be analyzed by using the wireless network management system (including equipment in 802.11 system, 802.16 system, 802.20 system, LTE system and the like); and finding out receiving equipment corresponding to the shore station according to the equipment type and model of the ship station, and sending the frequency point and the protocol analyzed by the wireless network management system to the shore station.
And 2, simultaneously utilizing an out-of-band network such as: the satellite communication network, the AIS network, the VHF network, the Beidou network, the short-wave single-sideband network and the like inform the ship station of the frequency points and the protocols to be used.
And 3, after the corresponding use frequency points and protocols are received by the shore station and the ship station, adjusting own equipment respectively, and adjusting the mutual pointing of the antennas.
And 4, when the shore station and the ship station use the same equipment, communication protocol and frequency point, the ship-shore connection is completed through heartbeat detection once the heartbeat of the other side is detected.
Since the vessel is moving all the time, it is necessary to perform shore synchronization.
As shown in fig. 3, when the connection is completed, it is necessary to maintain the communication in real time, and to perform calculation and setting on corresponding data, such as calculating a distance, setting a channel bandwidth, transmitting power, and a ship station or a shore station location. Therefore, the method further comprises the following steps:
and 5, after the ship-shore connection is completed, calculating the ship-shore distance in real time by the wireless network management system, and calculating the adaptive channel bandwidth and the transmission power according to the characteristics of the equipment and the strength of the signal.
And 6, once the channel bandwidth and the transmitting power are changed, immediately informing the shore station and the ship station.
Step 7, the shore station correspondingly adjusts the channel bandwidth and the transmitting power; adjusting the transmitting power of the ship station; so that the communication remains balanced up and down.
And 8, simultaneously, the ship station also sends the real-time position of the ship station to a shore station, and the calculation of the wireless network management system is kept correct.
The invention has the advantages that the shore station can be widely applied to multi-system wireless communication equipment, frequency band limitation and communication protocol limitation are skipped, and even the utilization of channels and frequency points in the same communication system can be dynamically adjusted and adapted in a large range in a synchronous way, so that the wireless spectrum characteristics are utilized to the maximum extent, and the range and the distance of accessing to a ship are improved to the maximum.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (4)
1. A communication system self-adaptive wireless communication point-to-multipoint access method between a ship and a shore station is characterized in that the method firstly judges the wireless equipment information of the ship needing to be accessed, then dynamically and synchronously adjusts the corresponding information of the shore station, and realizes the multipoint access of a remote mobile ship station;
the wireless device information includes: wireless device communication system, frequency band, frequency point, transmitting power;
the method comprises the following concrete implementation steps:
101. after receiving a network access application signal of a ship, a shore station sends the received signal to a wireless network management system; sending the frequency points and the protocol analyzed by the wireless network management system to a shore station;
102. informing the ship station of the frequency points and the protocols to be used by using an out-of-band network;
103. after the shore station and the ship station receive the corresponding use frequency points and the corresponding protocols, the equipment of the shore station and the ship station are respectively adjusted, and the antennas are adjusted to point to each other;
104. when the same equipment, communication protocol and frequency point are used for the shore station and the ship station, the ship shore connection is completed through heartbeat detection once the heartbeat of the other side is detected.
2. The adaptive point-to-multipoint access method for wireless communication system between a ship and a shore station according to claim 1, wherein in step 101, the type and model of the wireless access device used by the ship can be analyzed by using the wireless network management system, and the type and model include: 802.11 system, 802.16 system, 802.20 system, LTE system; and finding out receiving equipment corresponding to the shore station according to the equipment type and model of the ship station, and sending the frequency point and the protocol analyzed by the wireless network management system to the shore station.
3. The adaptive point-to-multipoint access method for communication system between ship and shore station according to claim 1, wherein in said step 104, ship-shore synchronization is required.
4. The adaptive point-to-multipoint communication method for a ship-to-shore communication system according to claim 1, further comprising:
105. after the ship shore connection is completed, the wireless network management system calculates the ship shore distance in real time, and calculates the adaptive channel bandwidth and the transmitting power according to the characteristics of equipment and the strength of signals;
106. comparing the channel bandwidth and the transmitting power, judging whether the channel bandwidth and the transmitting power change, and if the channel bandwidth and the transmitting power change, immediately informing a shore station and a ship station;
107. correspondingly adjusting channel bandwidth and transmitting power by the shore station; adjusting the transmitting power of the ship station; keeping the communication balanced up and down;
108. the ship station also sends the real-time position of the ship station to the shore station, and the calculation of the wireless network management system is kept correct.
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| CN201710598547.XA CN107241768B (en) | 2017-07-21 | 2017-07-21 | Self-adaptive wireless communication point-to-multipoint access method for communication system between ship and shore station |
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| CN201710598547.XA CN107241768B (en) | 2017-07-21 | 2017-07-21 | Self-adaptive wireless communication point-to-multipoint access method for communication system between ship and shore station |
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| CN113068157B (en) * | 2021-02-02 | 2022-08-23 | 浙江嘉蓝海洋电子有限公司 | Point-to-point communication method with high transmission stability between coasts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102090134A (en) * | 2008-07-17 | 2011-06-08 | 日本电气株式会社 | Radio communication system, management server, mobile base station device, and mobile base station control method |
| CN104679032A (en) * | 2015-02-27 | 2015-06-03 | 上海海事大学 | Dynamic antenna adjustment and communication method by utilizing shore-based base station and ship location information |
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| KR20060016491A (en) * | 2004-08-18 | 2006-02-22 | 에스케이 텔레콤주식회사 | Power control method of a marine repeater system |
| KR20130074901A (en) * | 2011-12-27 | 2013-07-05 | 한국전자통신연구원 | Maritime communication system and method |
| CN103037542A (en) * | 2013-01-17 | 2013-04-10 | 海南大学 | Mobile communication system catering to sea ships |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102090134A (en) * | 2008-07-17 | 2011-06-08 | 日本电气株式会社 | Radio communication system, management server, mobile base station device, and mobile base station control method |
| CN104679032A (en) * | 2015-02-27 | 2015-06-03 | 上海海事大学 | Dynamic antenna adjustment and communication method by utilizing shore-based base station and ship location information |
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