CN101719784A - Digital trunking communication system and method based on VSAT satellite gateway station - Google Patents
Digital trunking communication system and method based on VSAT satellite gateway station Download PDFInfo
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- CN101719784A CN101719784A CN200910310394A CN200910310394A CN101719784A CN 101719784 A CN101719784 A CN 101719784A CN 200910310394 A CN200910310394 A CN 200910310394A CN 200910310394 A CN200910310394 A CN 200910310394A CN 101719784 A CN101719784 A CN 101719784A
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Abstract
The invention discloses digital trunking communication system and method based on a VSAT satellite gateway station. Soft exchange of communication modes of a VSAT satellite communication network and different digital trunking systems is realized by a VSAT system gateway station between a VSTA satellite and a land central station, thereby realizing remote interconnection of different types of digital trunking systems. The invention has the advantages of wide coverage range, wide service range, multiple service functions, complete managing and scheduling functions, high resource utilization ratio, high networking speed and low maintenance cost.
Description
Technical field
The present invention relates to technical field of satellite communication, especially based on the digital clustering communication system and the method for VSAT satellite gateway station
Background technology
Digital clustering communication system is a kind of high-effect and cheap advanced person's specific high level mobile command, a dispatching mobile communication system.Limited communication channel of trunked communication system is under the control of central control board, automatically, dynamically, optimally all users' uses in the system are given in assignment.Be specially adapted to army, enterprise, government department and carry out unified scheduling and urgency communication.Domestic existing a plurality of TETRA and iDEN digital clustering communication system can realize with fixedly common network is suitable in operation.Because the different digital trunked communication system has different communication modes, therefore when the different digital trunked communication system is interconnected, need carry out the conversion of Design of network interface and communication mode.
VSAT (Very Small Aperture Terminal) satellite communication system can provide the seamless covering of relative broad range with lower cost, and service range is wide, is not subjected to the restriction of geographical conditions, has the bandwidth utilized of non-constant width.Satellite communication system and ground communication infrastructure are relatively independent, and the network route is simple and direct, and networking speed is fast, and operation and maintenance cost is low.Be specially adapted to the national or global unit etc. that those ground communication infrastructure are not enough and need department and system such as army, the government department of telecommunication and have numerous branches.Present VSAT satellite communication network has been realized interconnected with fixing common network.
The interconnection technique of interconnection technique, VSAT satellite communication network and the public network of Digital Clustering and public network is comparatively ripe at present, but does not also have ripe digital cluster system and the interconnected and dissimilar digital clustering communication system interconnection techniques of VSAT satellite communication system.
Summary of the invention
The purpose of this invention is to provide a kind of digital clustering communication system and method, realize that dissimilar digital clustering communication systems are interconnected based on the VSAT satellite gateway station.
It is as follows to the present invention includes particular content:
Digital clustering communication system based on the VSAT satellite gateway station, comprise: a VSAT satellite communication network, at least two dissimilar digital cluster communication nets, all comprise several digital cluster communication terminals in each digital cluster system, one or more trunking communication base station, a cluster controller, the cluster controller of each digital cluster communication net connects VSAT satellite communication network ground station by ground interface unit, with the data of digital cluster system and control information all as the data message in the VSAT satellite communication, handle according to the data message form in the VSAT satellite communication, the VSAT satellite communication network comprises a VSAT communication satellite, a ground central station, several VSAT ground stations, several VSAT satellite communication small stations, VSAT ground station and central station are formed star network, central station carries out duplex communication with interior all the VSAT small stations of net and all VSAT ground stations, also comprise the VSAT system gateway station between VSAT communication satellite and the ground central station, VSAT system gateway station is realized data message between each digital cluster communication net and VSAT satellite communication network by its soft switch unit, signaling, the exchange of agreement and frame format, this soft switch unit comprises soft switch service server and soft switch Control Server two parts, wherein, the soft switch service server comprises business datum Switching Module and control information Switching Module, the soft switch service server is used to carry out data message, signaling, the exchange of agreement and frame format, soft switch Control Server are used for administer calls control and handle, protocol conversion, business provides, resource management, charge, authentication and time service, address resolution.
A kind of improvement as native system, described dissimilar digital cluster communication net comprises the digital clustering communication system of existing seven kinds of standards, be TETRA, APOC25, IDRA, DIMRS, TETRAPOL, EDACS, FHMA, VSAT system gateway station interface unit has versatility, has seven kinds of standard digital cluster systems and VSAT satellite communication system interface.
The application also comprises the digital cluster communication method based on the VSAT satellite gateway station, realize the soft switch of the communication mode of VSAT satellite communication network and different digital trunked communication system by the VSAT system gateway station between VSAT communication satellite and the ground central station, thereby realize interconnecting at a distance of different systems digital cluster system, carry out soft switch by VSAT system gateway station, communication mode is converted to the communication mode of target number cluster, thereby realizes digital clustering communication system and the seamless link of VSAT satellite communication system and interconnecting of different systems digital cluster system.
Beneficial effect of the present invention:
In the terrestrial components of system, realize the soft switch of the communication mode of VSAT satellite communication network and different digital trunked communication system by the VSAT system gateway station between VSAT communication satellite and the ground central station, thereby realize interconnecting at a distance of different systems digital cluster system.Wide coverage, service range is wide, business function is various, command scheduling is multiple functional, resource utilization is high, networking speed is fast, maintenance cost is low.
For the user provides business and the function that can't support under the single Digital Clustering operation mode, satisfy user's individual business demand, improve the profit level of cellular carrier.The development course that this multisystem merges evolution had both possessed the low cost of single system evolution path, low-risk advantage, can satisfy the system design goal that the innovative form development course is formulated again, therefore, be a kind of practicality and ageing all very strong long-run development route.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the system configuration schematic diagram in the embodiment of the invention.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Present embodiment based on the digital clustering communication system of VSAT satellite gateway station and method as shown in Figure 1, be example in conjunction with the interconnected communication of iDEN and LTD digital cluster system, set forth the Principle of Communication of system.
Among the figure: the 1--LTD digital cluster system;
The 2--iDEN digital cluster system.
Digital clustering communication system based on the VSAT satellite gateway station, comprise: a VSAT satellite communication network, two dissimilar digital cluster communication nets, be respectively LTD digital cluster system and iDEN digital cluster system, all comprise several digital cluster communication terminals in each digital cluster system, a trunking communication base station, a cluster controller, the cluster controller of each digital cluster communication net connects VSAT satellite communication network ground station by ground interface unit, with the data of digital cluster system and control information all as the data message in the VSAT satellite communication, handle according to the data message form in the VSAT satellite communication, the VSAT satellite communication network comprises a VSAT communication satellite, a ground central station, VSAT ground station, VSAT satellite communication small station, central station carries out duplex communication with interior all the VSAT small stations of net and all VSAT ground stations, also comprise the VSAT system gateway station between VSAT communication satellite and the ground central station, VSAT system gateway station is realized data message between each digital cluster communication net and VSAT satellite communication network by its soft switch unit, signaling, the exchange of agreement and frame format, this soft switch unit comprises soft switch service server and soft switch Control Server two parts, wherein, the soft switch service server comprises business datum Switching Module and control information Switching Module, the soft switch service server is used to carry out data message, signaling, the exchange of agreement and frame format, soft switch Control Server are used for administer calls control and handle, protocol conversion, business provides, resource management, charge, authentication and time service, address resolution.
Terminal in the LTD system is prepared the terminal transmits information bag in iDEN.
LTD receives the base station and transmits packets of information and transfer to the LTD cluster controller, cluster controller is analyzed information, judge the target location of packets of information, if terminal in non-cluster of target terminal, then cluster controller adds this group system addressing information on information-data packet, and will transmit the packets of information biography to outer net.The group system network interface is sent to system's ground interface unit with packets of information.
The network interface unit of group system has the buffer-stored space, coordinates to import into the unmatched problem of speed that spreads out of.Simultaneously, rank according to the priority of importing the outgoi8ng data bag into and to wait, make the high urgency communication priority treatment of grade.
System's ground interface unit is between VSAT ground station and the digital cluster system, and the communication link of two kinds of network interconnections is provided; But do not carry out two internetwork exchanges.After system's ground interface unit is received the cluster system data bag, data message and control information are all transmitted as the data message in the VSAT satellite communication system.Subsequently information is delivered to the VSAT ground satellite station.
What iDEN adopted is speech coding mode and the M-16QAM quadrature amplitude modulation modulation technique of VSELP VSELP (Vector Sum Excited LinearPrediction), LTD is an a kind of APCO25 system, adopts IMBE (Improved Multi-Band Excitation) speech coding mode and C4FSK modulation system.The VSAT satellite communication system adopts coded system and QPSK (the Quaternary Phase Shift Keying) modulation technique of LD-CELP (Low-Delay Code-Excited Linear Prencdiction).
What VSAT and iDEN adopted is the working method of full duplex, and the LTD employing is half-duplex mechanism.In the LTD system, adopt EVOX (Enhanced Voice Operated Transmit) technology, in the backward channel of low speed, transmit VOX (VoiceOperated Transmit) information and be used for switching fast the transmission of half-duplex channel and receive operation, to realize that both call sides " is listened " and the matching operation of " saying ".The VSAT ground satellite station adopts FEC (Forward Error Correction) forward error correction technique, MCPC (Multiple Channel Per Carrier) line sharing technology, QPSK modulation-demodulation technique and effective spread spectrum, signal is modulated and spread processing, be forwarded to the VSAT central station through in the VSAT to link and satellite by radio frequency part.
VSAT system gateway station carries out despreading demodulation processing with packets of information, after decoding, error detection are handled, and SCN Space Cable Network administrative center unit.The network management center unit carries out analyzing and processing to information packet, judges information sender and recipient's identity and address information, request communication mode etc.The authentication of sending service management unit to carry out the user determines whether the user has the right to ask the authority of communication mode, and the user who detects the limit for height of whether having the right simultaneously waits in line.Afterwards, send Service Management Unit to carry out Business Processing, if the user carries out grouping busy of different group systems or selective call, then service managing server will distribute a plurality of voice communication channel.Finish the addressing and the Route Selection of target terminal user by network management center.
The VSAT satellite communication earth station that the target group system connects with the signal data bag that receives amplify, Digital Down Convert processing, demodulation process.Send target cluster iDEN the ground interface unit of communication system afterwards, carry out unpacking and importing the iDEN digital clustering communication system into of VSAT satellite communication system packet, carry out processing and operation data message and control information by the digital cluster system controller.
Carry out the analysis of data message and control information at cluster controller, the priority of information packet is judged, the packet of high priority is carried out priority treatment, carry out channel allocation, concurrent carry information bag is to the object set group terminal.The target terminal machine is handled after receiving packet, and the transmission of primary information bag is so far finished in converts communications pattern, incision channel, wait communication or continuation communication etc.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (3)
1. based on the digital clustering communication system of VSAT satellite gateway station, comprise: a VSAT satellite communication network, at least two dissimilar digital cluster communication nets, all comprise several digital cluster communication terminals in each digital cluster system, one or more trunking communication base station, a cluster controller, the cluster controller of each digital cluster communication net connects VSAT satellite communication network ground station by ground interface unit, the VSAT satellite communication network comprises a VSAT communication satellite, a ground central station, several VSAT ground stations, several VSAT satellite communication small stations, VSAT ground station and central station are formed star network, central station carries out duplex communication with interior all the VSAT small stations of net and all VSAT ground stations, it is characterized in that: also comprise the VSAT system gateway station between VSAT communication satellite and the ground central station, VSAT system gateway station is realized data message between each digital cluster communication net and VSAT satellite communication network by its soft switch unit, signaling, the exchange of agreement and frame format, this soft switch unit comprises soft switch service server and soft switch Control Server two parts, wherein, the soft switch service server comprises business datum Switching Module and control information Switching Module, the soft switch service server is used to carry out data message, signaling, the exchange of agreement and frame format, soft switch Control Server are used for administer calls control and handle, protocol conversion, business provides, resource management, charge, authentication and time service, address resolution.
2. the digital clustering communication system based on the VSAT satellite gateway station according to claim 1, it is characterized in that: described dissimilar digital cluster communication net comprises the digital clustering communication system of existing seven kinds of standards, be TETRA, APOC25, IDRA, DIMRS, TETRAPOL, EDACS, FHMA, VSAT system gateway station interface unit has versatility, has seven kinds of standard digital cluster systems and VSAT satellite communication system interface.
3. based on the digital cluster communication method of VSAT satellite gateway station, it is characterized in that: in the described system of claim 1, realize the soft switch of the communication mode of VSAT satellite communication network and different digital trunked communication system by the VSAT system gateway station between VSAT communication satellite and the ground central station, thereby realize interconnecting at a distance of different systems digital cluster system, carry out soft switch by VSAT system gateway station, communication mode is converted to the communication mode of target number cluster, thereby realizes digital clustering communication system and the seamless link of VSAT satellite communication system and interconnecting of different systems digital cluster system.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184513A (en) * | 2013-05-24 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT gateway station for transmitting high-definition video |
| CN104184912A (en) * | 2013-05-27 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT network-based gateway station IP voice processing method |
| CN104184714A (en) * | 2013-05-27 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT network-based gateway station IP data processing method |
| CN107070535A (en) * | 2017-02-27 | 2017-08-18 | 北京亚太东方通信网络有限公司 | A kind of method that global Incorporate satellite broadcast service is provided |
| CN113115330A (en) * | 2021-03-17 | 2021-07-13 | 中国人民解放军国防科技大学 | Big data analysis-based Beidou short message service optimization method and system |
-
2009
- 2009-11-25 CN CN200910310394A patent/CN101719784A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184513A (en) * | 2013-05-24 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT gateway station for transmitting high-definition video |
| CN104184912A (en) * | 2013-05-27 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT network-based gateway station IP voice processing method |
| CN104184714A (en) * | 2013-05-27 | 2014-12-03 | 成都林海电子有限责任公司 | VSAT network-based gateway station IP data processing method |
| CN107070535A (en) * | 2017-02-27 | 2017-08-18 | 北京亚太东方通信网络有限公司 | A kind of method that global Incorporate satellite broadcast service is provided |
| CN113115330A (en) * | 2021-03-17 | 2021-07-13 | 中国人民解放军国防科技大学 | Big data analysis-based Beidou short message service optimization method and system |
| CN113115330B (en) * | 2021-03-17 | 2022-06-17 | 中国人民解放军国防科技大学 | Big data analysis-based Beidou short message service optimization method and system |
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Application publication date: 20100602 |