CN102917369A - Maritime wideband wireless communication system - Google Patents
Maritime wideband wireless communication system Download PDFInfo
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- CN102917369A CN102917369A CN2012103972650A CN201210397265A CN102917369A CN 102917369 A CN102917369 A CN 102917369A CN 2012103972650 A CN2012103972650 A CN 2012103972650A CN 201210397265 A CN201210397265 A CN 201210397265A CN 102917369 A CN102917369 A CN 102917369A
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Abstract
The invention discloses a maritime wideband wireless communication system which can realize broadband wireless communication among moving ships on the sea surface and solve the problems that the communication bandwidth is narrow, the communication distance is short, the communication chain is unstable (a ship body shakes) and the like when the existing communication system is used among the ships on the sea surface. The maritime wideband wireless communication system mainly comprises a set of central station and multiple sets of mobile stations, wherein the central station and the mobile stations are respectively mounted on different ships, the ship on which the central station is mounted can be communicated with any ship on which one mobile station is mounted. The central station and the mobile stations are same in structure and respectively comprise an antenna, an outdoor unit, an indoor unit and a network switch. For meeting the requirements of remote and wideband transmission under a specific environment of the sea surface, the emitting efficiencies of the antennas in the system are within a frequency range of 430 MHz to 860 MHz; and for resisting the storm wave swinging on the sea surface and guaranteeing the stability of communications links, omnidirectional antennas having receiving and transmitting functions are used as the antennas in the system, and two antennas with same performances form a V shape.
Description
Technical field
The present invention relates to a kind of marine system of broadband wireless communication, belong to wireless communication technology field.
Background technology
The demand of marine broadband wireless communications has promoted the development of marine broadband wireless communications, from present case, the application of marine broadband wireless communications can be divided into three types: the first kind, broadband wireless communications between island and the continental shelf, the equipment at communication two ends is fixed, and this equipment mainly is in order to satisfy the demand that the resident communicates by letter to diverse network on the island.Equations of The Second Kind, the radio communication between offshore and the mobile ship, offshore equipment is fixed on the mountain top near the sea, and mobile ship is large vessel, and the antenna installation height is all larger, and this kind equipment mainly is to satisfy these large vessels to the demand of broadband wireless communications; The 3rd class, the broadband wireless communications between the mobile ship is used for transmitting image, speech and other data.
Use for above-mentioned two classes, at present domestic had ripe communication equipment, also comparative maturity on engineering is used, and also rare for the communication equipment of the 3rd class demand, engineering is used and is also run into a lot of difficulties.
Summary of the invention
In view of this, the invention provides a kind of marine system of broadband wireless communication, this system can realize that the sea moves the broadband wireless communications between the ship, communication bandwidth was narrow when solution existing communication system used between the ship of sea, problems such as (hull rock) that communication distance is short and communication link is unstable.
Marine system of broadband wireless communication of the present invention comprises: a central station and one or more mobile radio stations; Central station is installed in respectively on the different ships with mobile radio station.
The structure of described central station and mobile radio station is identical, includes antenna, outdoor unit, indoor unit and the network switch; Wherein outdoor unit is arranged in deck or the mast place of ship, is positioned near the antenna; Indoor unit is positioned at cabin; Antenna is connected with outdoor unit by radio frequency cable; Outdoor unit is connected with indoor unit with power line by data wire respectively, and wherein indoor unit is the outdoor unit power supply by power line, carries out exchanges data by data wire and outdoor unit; Indoor unit links to each other with the network switch; The network switch in the described mobile radio station contains the function of router.
Described antenna is the omnidirectional antenna of transceiver, and the frequency range that can receive or launch radio wave is 430MHz～860MHz.
Described central station receives the radio wave of each mobile radio station simultaneously to the radio wave of mobile radio station emission setting frequency range.
Described antenna forms V-structure by two identical single antenna of performance; The gain of antenna is 8-10db, 10 °-15 ° of the field angles of vertical direction; The angle of single antenna and vertical direction is 7 °-10 °.
The center frequency point of described mobile radio station emission radio wave can be switched between 2-6 emission frequency.
Intranet is set respectively in described central station and the mobile radio station, and three Intranets are relatively independent; Indoor unit connects Intranet by the network switch.
Beneficial effect:
(1) in the native system central station antenna and mobile radio station antenna transmit and receive frequency in 430MHz～860MHz frequency range, radio wave in this frequency range has certain diffracting power, transmission is subjected to the steam inhomogeneities to affect the path loss values less across the sea, make electromagnetic signal can transmit larger distance, thereby can satisfy the requirement of remote under the particular surroundings of sea and wideband transmit; The communication distance of wireless communication system of the present invention can be greater than 11 nautical miles.
(2) central station antenna and mobile radio station antenna all adopt the omnidirectional antenna of transceiver, and form V-shape by two identical antennas of performance, can resist the sea stormy waves and wave, and guarantee the stability of communication link.
(3) when selecting antenna, the gain of general antenna is the bigger the better, but the gain increase can cause the field angle of antenna vertical direction to reduce, and affect the coverage of antenna, for the gain that makes antenna and the field angle of vertical direction have good coupling, meet the requirement of sea long distance and wideband transmit, the antenna among the present invention selects gain to be 8-10db, 10 °-15 ° of the field angles of vertical direction, thus the range of receiving that guarantees antenna when gain is large also meets marine instructions for use.
(4) owing to select the antenna of 10 °-15 ° of vertical direction field angles, for guaranteeing in the situation that ship waves, still can proper communication, the angle of single antenna and vertical direction is 7 °-10 ° in the V-shape antenna of the present invention.
(5) quantity of increase mobile radio station median filter, can make the center frequency point of mobile radio station between difference emission frequency, switch (realizing by switching filter), when mobile radio station when some frequencies can not proper communication, switch to another available frequency, realize reliable communication by the redundancy of receiving and dispatching frequency.
(6) communication ends of each in system arranges respectively Intranet in (referring to central station and two mobile radio stations), and three Intranets are relatively independent, between without any IP related restriction is set, but the different service access type of Intranet inside arbitrary disposition, to realize sharing of data.
Description of drawings
Fig. 1 is the basic transmission architecture of marine system of broadband wireless communication of the present invention.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
Present embodiment provides a kind of marine system of broadband wireless communication, and this system employs between the mobile ship, realizes image between the mobile ship, speech and other data transfer at sea.
The basic transmission architecture of the marine system of broadband wireless communication that present embodiment provides as shown in Figure 1, this system mainly is comprised of a cover central station and two cover mobile radio stations, two cover mobile radio stations are respectively 1# mobile radio station and 2# mobile radio station, central station is installed in respectively on three different ships with two cover mobile radio stations, by this communication system communication system the ship at mounting center station and the ship of arbitrary installation mobile radio station is communicated.
Wherein central station comprises central station antenna, central station outdoor unit, central station indoor unit and the central station network switch.Wherein the central station outdoor unit is arranged in deck or the mast place of ship, is positioned near the central station antenna, prevents that radio frequency cable is to the decay of signal; The central station indoor unit is positioned at cabin.The central station outdoor unit comprises a plurality of filters, Base-Band Processing (modulation /demodulation), upconverter and power amplifier.The central station antenna is connected with filter in the central station outdoor unit by radio frequency cable; The central station indoor unit is connected with the central station outdoor unit with power line by data wire, and the central station indoor unit carries out exchanges data by outdoor unit power supply in station centered by the power line by data wire and central station outdoor unit.In the present embodiment, data communication adopts optical fiber to be connected between outdoor unit and the indoor unit, and indoor unit provides 1 road AC220V power supply to outdoor unit.The central station indoor unit is connected by other interior network equipment of the central station network switch and central station, realizes sharing of data.
Every cover mobile station apparatus includes mobile radio station antenna, mobile radio station outdoor unit, mobile radio station indoor unit and the mobile radio station network switch.The structure of mobile station apparatus is identical with the structure of central station equipment, and the mobile radio station network switch that do not coexist contains the function of router, is convenient to central station different mobile radio stations is distinguished.
Each communication ends in the system (referring to central station and two mobile radio stations) arranges respectively Intranet, and three Intranets are relatively independent, between without any IP related restriction is set, but the different service access type of Intranet inside arbitrary disposition.The central station indoor unit connects the central station Intranet by the central station network switch, and the mobile radio station indoor unit connects the mobile radio station Intranet by the mobile radio station network switch that contains router feature.Router provides all Intranet mappings to process, and the data of Wide Area Network interface are transferred to the mobile radio station indoor unit, carries out transparent data and transmits.
Antenna on central station and two mobile radio stations all adopts the omnidirectional antenna of transceiver, finishes the function that sends or receive wireless signal.Because stormy waves is larger on the sea, be installed in the antenna on the hull because the effect of stormy waves produces significantly waves, cause easily receiving signal and produce deep fading, interrupt communication.Therefore, in the native system, the antenna on each station forms V-type by two identical antennas of performance and is installed on the hull, and wherein the angle of single antenna and vertical direction is 7 °-10 ° (outwards opening), guarantee in the situation that ship waves, still can proper communication.Antenna in the native system can receive or launch the radio wave of 430MHz～860MHz frequency range, and the electromagnetic wave in this scope transmits across the sea and is subjected to the steam inhomogeneities to affect the path loss values less, makes electromagnetic signal can transmit larger distance.The gain of antenna is 8-10db, 10 °-15 ° of the field angles of vertical direction.
The mobile radio station indoor unit carries out the encoding and decoding of numeric field to data, to improve transmission bandwidth and system reliability.The central station indoor unit carries out the encoding and decoding of numeric field to data, has multiplex function, with the function of realization while with a plurality of mobile station communicates.
In described central station outdoor unit and each mobile radio station outdoor unit three band pass filters are arranged all, wherein one in three filters in the central station outdoor unit are used for emission, and two are used for receiving; Three two in filters are used for emission in the mobile radio station outdoor unit, and one is used for receiving.
The center frequency point of the radio wave of central station emission is 580MHz in the present embodiment, and its bandwidth that takies is 10MHz, and then the frequency range of the radio wave of center emission is 570MHz～590MHz, and the center frequency point that central station receives is 465MHz, 690MHz.
The bandwidth of three band pass filters that arrange in the mobile radio station outdoor unit is respectively 580MHz, 465MHz and 690MHz; Wherein bandwidth is the signal that the filter of 580MHz is used for the receiving center station, and bandwidth is that the filter of 465MHz and 690MHz is used for to central station emission radio wave.
For the reliability that guarantees to communicate by letter, can increase band pass filter at central station and mobile radio station, make the center frequency point of mobile radio station between a plurality of (being generally 2-6) emission frequency, switch (realizing by switching filter), when some frequencies can not proper communication, switch to another available frequency, realize reliable communication by the redundancy of receiving and dispatching frequency.
Data are as follows by the flow process that central station is transferred to mobile radio station:
1) the online a certain network equipment mails to the central station indoor unit by the network switch with data in the central station, and this network equipment can be computer or industrial control equipment etc.;
2) after the central station indoor unit passes through the data of dual-port redundancy backup network interface unit reception from the network equipment, the data that receive are carried out numeric field to be processed, described numeric field is processed and is comprised 8B10B chnnel coding, Turbo chnnel coding, OFDM (OFDM) modulation etc.;
3) data communication device after the central station indoor unit will be processed is crossed optical fiber and is sent to the central station outdoor unit;
4) central station outdoor unit receive data is transformed into analog domain with data, then base band data is upconverted to the transmit frequency band of 430MHz～860MHz scope, and carries out power amplification;
5) the central station outdoor unit sends to the central station antenna with rf data by feeder line;
6) the central station antenna sends data;
7) the mobile radio station antenna reception is from the wireless signal of central station, and is transferred to the mobile radio station outdoor unit by feeder line;
8) the mobile radio station outdoor unit down-converts to baseband signal with the wireless signal that receives, and is converted to numeric-field data, then by optical fiber data is sent to indoor unit;
9) after the decoding data demodulation of mobile radio station indoor unit to reception data are mail to router;
10) router mails to the network equipment in the mobile radio station Intranet with data.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a marine system of broadband wireless communication is characterized in that, comprising: a central station and one or more mobile radio stations; Central station is installed in respectively on the different ships with mobile radio station;
The structure of described central station and mobile radio station is identical, includes antenna, outdoor unit, indoor unit and the network switch; Wherein outdoor unit is arranged in deck or the mast place of ship, is positioned near the antenna; Indoor unit is positioned at cabin; Antenna is connected with outdoor unit by radio frequency cable; Outdoor unit is connected with indoor unit with power line by data wire respectively, and wherein indoor unit is the outdoor unit power supply by power line, carries out exchanges data by data wire and outdoor unit; Indoor unit links to each other with the network switch; The network switch in the described mobile radio station contains the function of router;
Described antenna is the omnidirectional antenna of transceiver, and the frequency range that can receive or launch radio wave is 430MHz～860MHz;
Described central station receives the radio wave of each mobile radio station simultaneously to the radio wave of mobile radio station emission setting frequency range.
2. a kind of marine system of broadband wireless communication as claimed in claim 1 is characterized in that, described antenna forms V-structure by two identical single antenna of performance.
3. a kind of marine system of broadband wireless communication as claimed in claim 2 is characterized in that, the gain of described antenna is 8-10db, 10 °-15 ° of the field angles of vertical direction.
4. a kind of marine system of broadband wireless communication as claimed in claim 3 is characterized in that, the angle of described single antenna and vertical direction is 7 °-10 °.
5. a kind of marine system of broadband wireless communication as claimed in claim 1 is characterized in that, the center frequency point of described mobile radio station emission radio wave can be switched between 2-6 emission frequency.
6. a kind of marine system of broadband wireless communication as claimed in claim 1 is characterized in that, Intranet is set respectively in described central station and the mobile radio station, and three Intranets are relatively independent; Indoor unit connects Intranet by the network switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210397265.0A CN102917369B (en) | 2012-10-18 | 2012-10-18 | A kind of marine system of broadband wireless communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210397265.0A CN102917369B (en) | 2012-10-18 | 2012-10-18 | A kind of marine system of broadband wireless communication |
Publications (2)
| Publication Number | Publication Date |
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| CN102917369A true CN102917369A (en) | 2013-02-06 |
| CN102917369B CN102917369B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210397265.0A Expired - Fee Related CN102917369B (en) | 2012-10-18 | 2012-10-18 | A kind of marine system of broadband wireless communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108934017A (en) * | 2018-07-27 | 2018-12-04 | 中国联合网络通信集团有限公司 | A kind of antenna covering adjustment dispositions method and ultra-wideband multimode device |
| US10757677B2 (en) * | 2016-09-30 | 2020-08-25 | Fujitsu Limited | Recording medium recording base station determination program, information processing apparatus, and base station determination method |
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| CN1623341A (en) * | 2000-09-27 | 2005-06-01 | 爱罗莎特股份有限公司 | Low-height, low-cost, high-gain antenna and system for mobile platforms |
| CN101047409A (en) * | 2006-12-29 | 2007-10-03 | 葫芦岛联博电子技术有限公司 | Sea long distance signal transmission device |
| CN101958922A (en) * | 2010-08-10 | 2011-01-26 | 胡青 | Mobile IP technology-based automatic identification method for ships |
| CN102084694A (en) * | 2008-07-02 | 2011-06-01 | 贝莱尔网络公司 | High performance mobility network with autoconfiguration |
| CN102387186A (en) * | 2011-07-20 | 2012-03-21 | 北京亿海蓝科技有限公司 | Data transmission system and method for base station of automatic identification system for ship |
-
2012
- 2012-10-18 CN CN201210397265.0A patent/CN102917369B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1623341A (en) * | 2000-09-27 | 2005-06-01 | 爱罗莎特股份有限公司 | Low-height, low-cost, high-gain antenna and system for mobile platforms |
| CN101047409A (en) * | 2006-12-29 | 2007-10-03 | 葫芦岛联博电子技术有限公司 | Sea long distance signal transmission device |
| CN102084694A (en) * | 2008-07-02 | 2011-06-01 | 贝莱尔网络公司 | High performance mobility network with autoconfiguration |
| CN101958922A (en) * | 2010-08-10 | 2011-01-26 | 胡青 | Mobile IP technology-based automatic identification method for ships |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10757677B2 (en) * | 2016-09-30 | 2020-08-25 | Fujitsu Limited | Recording medium recording base station determination program, information processing apparatus, and base station determination method |
| CN108934017A (en) * | 2018-07-27 | 2018-12-04 | 中国联合网络通信集团有限公司 | A kind of antenna covering adjustment dispositions method and ultra-wideband multimode device |
| CN108934017B (en) * | 2018-07-27 | 2021-09-14 | 中国联合网络通信集团有限公司 | Deployment method for antenna coverage adjustment part and ultra-wideband multimode equipment |
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| CN102917369B (en) | 2016-05-04 |
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