CN102917333A - Satellite communication system of large-scale satellite terminals and satellite terminal access method - Google Patents
Satellite communication system of large-scale satellite terminals and satellite terminal access method Download PDFInfo
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- CN102917333A CN102917333A CN2012103884753A CN201210388475A CN102917333A CN 102917333 A CN102917333 A CN 102917333A CN 2012103884753 A CN2012103884753 A CN 2012103884753A CN 201210388475 A CN201210388475 A CN 201210388475A CN 102917333 A CN102917333 A CN 102917333A
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Abstract
The invention discloses a satellite communication system of large-scale satellite terminals. The system comprises a satellite connection part and a 3G (The 3rd Generation Telecommunication) core network. A master station at the satellite connection part is connected with the 3G core network through an Iu interface, and used for forwarding request signaling and grouping service attached by certified satellite terminals to the 3G core network; and the 3G core network processes the request signaling attached by the certified satellite terminals and distributes a service channel used for transmitting the grouping service to a satellite terminal of which attachment is successful. According to the invention, the satellite connection part is accessed into the 3G core network to achieve the management of the large-scale satellite terminals at the satellite connection part by the 3G core network. The invention further discloses a satellite terminal access method for the satellite terminals in the satellite communication system, and the problem caused when the satellite terminals access into the 3G core network is solved by adopting the method.
Description
Technical field
The invention belongs to technical field of satellite communication, relate to a kind of cut-in method of satellite communication system and ICBM SHF satellite terminal access 3G core net of extensive ICBM SHF satellite terminal.
Background technology
Satellite communication is compared other communication technologys and is had unique advantage, and especially it is not subjected to the impact of the factors such as geographical environment, positional distance.At present communication technology of satellite fast development, the appearance of large capacity broadband connections satellite becomes possibility so that various multimedia services are carried in satellite communication.Along with the extensive use of satellite communication, its networking scale constantly enlarges, and the terminal quantity of access satellite communication system is also in continuous increase.Satellite communication system is in the past finished by network management system with control the management of ICBM SHF satellite terminal, and the disposal ability of network management system is not enough, can't satisfy access and the management of hundreds thousand of scale ICBM SHF satellite terminal.Be to adopt in main website that exploitation is for management and the control module of mass termination access and certain methods is arranged, this method construction cycle length, poor reliability, development cost height are unfavorable for the efficient operation of system.
Summary of the invention
Technology of the present invention is dealt with problems and is: for the deficiencies in the prior art, a kind of satellite communication system of extensive ICBM SHF satellite terminal is provided, by with satellite coupling part access 3G core net, realized utilizing the 3G core net to the management of large-scale ICBM SHF satellite terminal in the satellite coupling part.Simultaneously the present invention also provides satellite communication system Satellite terminal access method of the present invention, adopts the method can solve ICBM SHF satellite terminal to the access problem of 3G core net.
Technical solution of the present invention is:
In present satellite communication system access 3G core net, realize the Iu interface interconnected with the 3G core net in main website, and the software module that the 3G core network signalling is identified in realization in main website and ICBM SHF satellite terminal, adopt SGSN, GGSN, the HLR equipment of 3G core net to provide access control and management function for satellite communication system.
The satellite communication system of extensive ICBM SHF satellite terminal of the present invention, comprise satellite coupling part and 3G core net, described satellite coupling part comprises some ICBM SHF satellite terminal for the connection local area network (LAN), is used for the main website of management ICBM SHF satellite terminal, and the satellite that is used for realizing ICBM SHF satellite terminal and master station communication, wherein, described ICBM SHF satellite terminal is connected with described main website by described satellite; Described main website authenticates the ICBM SHF satellite terminal of first access, and with by the authentication ICBM SHF satellite terminal set up satellite link, described main website links to each other with described 3G core net by the Iu interface, and transmits and describedly adhere to demand signalling and Packet Service by the ICBM SHF satellite terminal that authenticates to the 3G core net;
Described 3G core net is processed the described demand signalling that adheres to of ICBM SHF satellite terminal by authentication, and divides and be used in the Traffic Channel that transmits Packet Service for adhering to successful ICBM SHF satellite terminal.
Further in above-mentioned satellite communication system, described ICBM SHF satellite terminal by and main website between satellite communication link send or receive the demand signalling that adheres between the Packet Service of the local area network (LAN) that is connected in this ICBM SHF satellite terminal and this ICBM SHF satellite terminal and described 3G core net.
Further in above-mentioned satellite communication system, described main website transmits the 3G core net by the Iu interface and by adhering to the summation Packet Service between the ICBM SHF satellite terminal of authentication.
Further in above-mentioned satellite communication system, described 3G core net comprises SGSN, GGSN, HLR, and SGSN links to each other with described main website by described Iu interface; HLR is used for the positional information that successful ICBM SHF satellite terminal is adhered in storage; GGSN be used for transmission belong to adhere to successful ICBM SHF satellite terminal and heterogeneous network between Packet Service.
The ICBM SHF satellite terminal cut-in method that adopts in above-mentioned satellite communication system comprises:
(1) described ICBM SHF satellite terminal becomes the step by the ICBM SHF satellite terminal of authentication to the authenticating of described main website;
(2) the described step of setting up synchronously satellite link by ICBM SHF satellite terminal and the described main website of authentication;
(3) described step of adhering to described 3G core net by described main website by the ICBM SHF satellite terminal of authentication,
Wherein, described by the authentication ICBM SHF satellite terminal by the step that described main website adheres to described 3G core net, comprise following process:
(31) described SGSN carries out identification to described ICBM SHF satellite terminal by authentication, obtains this described user's identification marking that passes through the ICBM SHF satellite terminal of authentication, changes step (32) over to;
(32) described SGSN carries out authentication ciphering to this described ICBM SHF satellite terminal by authentication; If authentication ciphering is by then changing step (33) over to; If authentication ciphering does not pass through, then notify the satellite link between the deletion of described main website and this described ICBM SHF satellite terminal of passing through to authenticate;
(33) described SGSN is to the described ICBM SHF satellite terminal by authentication of described HLR registration after step (32), and changes step (34) over to;
(34) described SGSN distributes P-TMSI and Route Area identification code to described ICBM SHF satellite terminal by authentication, finishes described ICBM SHF satellite terminal adhering to described 3G core net by authentication.
Further, in above-mentioned ICBM SHF satellite terminal cut-in method, described ICBM SHF satellite terminal comprises to the step that authenticates of described main website:
(11) described ICBM SHF satellite terminal sends ICBM SHF satellite terminal ID, carrier number, ICBM SHF satellite terminal MAC Address by burst to described main website;
(12) described main website ICBM SHF satellite terminal ID, carrier number, the ICBM SHF satellite terminal MAC Address that can identify this described ICBM SHF satellite terminal then changes step (13) over to; Otherwise, finish the verification process of this ICBM SHF satellite terminal;
(13) described main website sends ICBM SHF satellite terminal access information, network slot structure and channel resource to this described ICBM SHF satellite terminal, finishes the verification process of this described ICBM SHF satellite terminal.
Further, in above-mentioned ICBM SHF satellite terminal cut-in method, the process that described SGSN carries out identification to described ICBM SHF satellite terminal by authentication is:
Described SGSN sends the identification demand signalling to described ICBM SHF satellite terminal by authentication;
Described ICBM SHF satellite terminal by authentication receives the backward described SGSN of transmission identification demand signalling and sends this described user's identification marking that passes through the ICBM SHF satellite terminal of authentication.
The present invention compared with prior art has following advantage:
(1) the present invention adopts the 3G equipment of the core network of present maturation to finish satellite communication system management and control function, but adopts mature equipment reducing development cost and cycle and have higher reliability.Access 3G equipment of the core network makes the service layer of satellite communication system separate with control plane, makes more centralization of management, sharpening, the accuracy of system.
(2) effectively managing large scale ICBM SHF satellite terminal access of the present invention, satellite communication system for a large amount of ICBM SHF satellite terminal of access, adopt the method effectively to manage and to control access procedure, improve the networking efficient of ICBM SHF satellite terminal, the method can be supported the ICBM SHF satellite terminal connecting system of hundreds thousand of scales, really realizes the management and control function of mass termination.
(3) the present invention can improve the fail safe of satellite communication system, this method adopts two-stage access strategy access main website, the authentication ICBM SHF satellite terminal legal ICBM SHF satellite terminal under the communication system system whether for this reason in the wireless access process, this moment is only for ICBM SHF satellite terminal provides wireless connections, but do not set up Traffic Channel for it; Set up in the process in Traffic Channel, ICBM SHF satellite terminal carried out the processing such as authentication, verification, encryption, through the ICBM SHF satellite terminal after the authentication will be in the situation that resource allows the distribution service channel.Be connected with Traffic Channel by separating wireless connections, so that the two-stage access is accompanied by the two-stage authentication, improved the reliability and security of satellite communication.If be not allowed to adhere to into core net even if obtained the ICBM SHF satellite terminal of wireless connections, also can not obtain business, finally can't connecting system in.
Description of drawings
Fig. 1 is satellite communication system schematic diagram of the present invention;
Fig. 2 is flow chart of the present invention.
Embodiment
Below just by reference to the accompanying drawings the present invention is done further introduction.
As shown in Figure 1, satellite communication system of the present invention comprises, inserting of satellite part and 3G core net.Described inserting of satellite partly comprises ICBM SHF satellite terminal, satellite and main website, and wherein said ICBM SHF satellite terminal is used for linking to each other with local area network (LAN), and each ICBM SHF satellite terminal can connect at least one local area network (LAN), and the grouped data that will belong to this local area network (LAN) is transmitted.Described satellite is used for transmitting the grouped data between described ICBM SHF satellite terminal and the described main website, and described main website is used for the management ICBM SHF satellite terminal, and common described ICBM SHF satellite terminal scale is hundreds thousand of ranks.
The 3G core net comprises SGSN (Serving GPRS Support Node; GPRS: GPRS), GGSN (GGSN: Gateway GPRS Support Node), HLR (HLR: Home Location Register) and other core net relevant devices form.
The connection that the inserting of satellite part is connected with the 3G core net links to each other by the Iu interface with SGSN by main website.After this physical connection is set up and is finished, just can be with ICBM SHF satellite terminal by Master station access 3G core net, by described main website the signaling between ICBM SHF satellite terminal and the 3G core net is transmitted, thereby the managerial ability that can utilize the 3G core net is finished the management of extensive ICBM SHF satellite terminal in the satellite coupling part, satellite communication system can realize the access control of extensive ICBM SHF satellite terminal by the 3G core net, simultaneously can finish the ICBM SHF satellite terminal authentication, verification, encrypt, QoS ensures and conversation management functional, by the interconnected access efficiency that can greatly improve ICBM SHF satellite terminal of two networks, and can not reduce the terminal access performance along with the increase of ICBM SHF satellite terminal quantity.
In inserting of satellite part, successfully be connected in main website and be the ICBM SHF satellite terminal by authentication with ICBM SHF satellite terminal that described main website sets up satellite link, ICBM SHF satellite terminal that should be by authentication becomes and adheres to successful ICBM SHF satellite terminal after access 3G core net.Adhering to successful ICBM SHF satellite terminal can carry out the transmission of Packet Service by 3G core net and heterogeneous network, and described heterogeneous network includes, but are not limited to Internet and Inter-PLMN.
In the above-mentioned satellite communication system, main website adopts TDM (time division multiplexing) system to the forward link of ICBM SHF satellite terminal, ICBM SHF satellite terminal adopts MF-TDMA (multi-frequency time division multiple access) system to the return link of main website, in the 3G core net, adopt between SGSN and the GGSN adopt between gn interface, SGSN and the HLR between Gr interface, GGSN and the HLR adopt Gc interface, GGSN can by connect the internet behind the Gi interface, by connecing heterogeneous network behind the gp interface.
ICBM SHF satellite terminal become by the authentication ICBM SHF satellite terminal process as shown in Figure 2, may further comprise the steps:
ICBM SHF satellite terminal authenticates to main website, becomes the step by the ICBM SHF satellite terminal of authentication.
In this step, ICBM SHF satellite terminal sends CSC (common signaling channel) burst to main website, ICBM SHF satellite terminal enters landfall process, comprises in CSC (common signaling channel) burst sending ICBM SHF satellite terminal ID, carrier number, ICBM SHF satellite terminal MAC Address etc. self logon information
After main website receives CSC (common signaling channel) burst that ICBM SHF satellite terminal sends, judge whether this ICBM SHF satellite terminal is the legal ICBM SHF satellite terminal that records in the main website, if legal ICBM SHF satellite terminal, main website sends clean culture TIM signaling (login confirmation) to ICBM SHF satellite terminal, clean culture TIM (login confirmation) signaling is carried the ICBM SHF satellite terminal access information, the parameters such as network slot structure and channel resource, this process is the authentication of ICBM SHF satellite terminal, judging whether to permit ICBM SHF satellite terminal logs in main website and whether provides radio channel resource for it, such as refusal, main website sends clean culture TIM (login confirmation) signaling that the refusal ICBM SHF satellite terminal logs in to ICBM SHF satellite terminal.
ICBM SHF satellite terminal and the main website step of setting up synchronously satellite link by authentication.
In this step, ICBM SHF satellite terminal receives clean culture TIM (login confirmation) signaling that main website sends, ICBM SHF satellite terminal enters thick synchronizing process, ICBM SHF satellite terminal sends ACQ (catching burst) burst to main website, comprises the new logo in order to the identification satellite terminal in ACQ (the catching burst) burst;
Main website receives the ACQ (catching burst) that ICBM SHF satellite terminal is sent, extract wherein time, frequency and power parameter, main website is according to calculation of parameter ICBM SHF satellite terminal time, frequency and the capability correction value extracted, main website generates CMT (control information table) signaling afterwards, and corrected value write in CMT (control information table) signaling, after ICBM SHF satellite terminal received CMT (control information table) signaling, ICBM SHF satellite terminal finished thick synchronizing process.
After finishing thick synchronizing process, ICBM SHF satellite terminal enters smart synchronizing process, ICBM SHF satellite terminal sends SYNC (synchronization burst) burst, SYNC+flag set burst, SYNC+rqst burst to main website, comprises mainly that wherein ICBM SHF satellite terminal self need notify the information of main website and the resource bid parameter of ICBM SHF satellite terminal.
Main website receives SYNC (synchronization burst) burst, SYNC+flag set burst, the SYNC+rqst burst that ICBM SHF satellite terminal sends, adjust signaling CMT (control information table) for different burst transmits respectively, ICBM SHF satellite terminal time, frequency and performance number are finely tuned, after adjusting end, ICBM SHF satellite terminal finishes smart synchronizing process.ICBM SHF satellite terminal enters the synchronization state, and ICBM SHF satellite terminal is by passback business burst bag, and to the main website transport service, main website transmits forward business by forward data flow, and the satellite link between ICBM SHF satellite terminal and the main website is successfully established at this moment.
ICBM SHF satellite terminal by authentication, may further comprise the steps further such as Fig. 2 to the attaching process of 3G core net:
SGSN carries out identification to described ICBM SHF satellite terminal by authentication, obtains this described user's identification marking that passes through the ICBM SHF satellite terminal of authentication.
In this step, SGSN at first sends the identification demand signalling to ICBM SHF satellite terminal, and ICBM SHF satellite terminal is responded this identification demand signalling, thereby notifies SGSN with user's identification marking of ICBM SHF satellite terminal.
After obtaining user's identification marking of ICBM SHF satellite terminal, SGSN carries out authentication ciphering to this described ICBM SHF satellite terminal by authentication.
Authentication ciphering need to be to the equipment identities code check of ICBM SHF satellite terminal, it is the IMEI checking process, the satellite terminal equipment identity code adopts the discernible sign of SGSN IMEI as form, IMEI is the International Mobile Equipment Identity code, this process is optional process, carry out identification by equipment identity register module check satellite terminal equipment identity code, SGSN sends the message of " IM EI check " to the equipment identity register module, equipment identity register is then with " the check IMEI confirms " acknowledgement messaging that comprises IMEI, to finish authentication ciphering.
If authentication ciphering does not pass through, then notify the satellite link between the deletion of described main website and this described ICBM SHF satellite terminal of passing through to authenticate;
By to behind the authentication ciphering, SGSN is to pass through the ICBM SHF satellite terminal that authenticate of HLR registration through authentication ciphering.
SGSN sends the location registration message signaling to HLR, the location registration message signaling comprises SGSN number, SGSN address, IMSI information, after HLR receives the location registration message signaling, store current SGSN address, HLR sends to SGSN and inserts the user data signaling, the reservation data of this ICBM SHF satellite terminal is issued among the SGSN, and HLR sends location registration message to SGSN and responds signaling after receiving that insertion user data that SGSN beams back is responded signaling.
After said process is finished, if SGSN accepts the request of adhering to of ICBM SHF satellite terminal, SGSN sends to adhere to ICBM SHF satellite terminal and accepts signaling, adhere to and accept to comprise in the signaling P-TMSI and Route Area identification code, ICBM SHF satellite terminal sends to adhere to SGSN finishes signaling, contain newly assigned P-TMSI in this signaling, SGSN receives P-TMSI and regards it as effectively, this moment, ICBM SHF satellite terminal was finished attaching process, system finishes the authentication of ICBM SHF satellite terminal user class, can be the ICBM SHF satellite terminal distribution service channel of access, and transmit Packet Service.
For finishing the access procedure of above-mentioned ICBM SHF satellite terminal, need in main website, realize the Iu protocol stack of the interface, in order to finish interconnected between ICBM SHF satellite terminal and the 3G core net.The Iu interface of realizing in main website adopts the carrying of IP agreement, signaling parameter and service parameter that this Iu interface comes in order to identification and the transmission of parsing 3G core net, and main website finishes relevant configuration, the management of Implement Core net and control strategy according to the signaling parameter that passes over.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (7)
1. the satellite communication system of an extensive ICBM SHF satellite terminal, comprise satellite coupling part and 3G core net, described satellite coupling part comprises some ICBM SHF satellite terminal for the connection local area network (LAN), is used for the main website of management ICBM SHF satellite terminal, and the satellite that is used for realizing ICBM SHF satellite terminal and master station communication, wherein, described ICBM SHF satellite terminal is connected with described main website by described satellite; Described main website authenticates the ICBM SHF satellite terminal of first access, and with by the authentication ICBM SHF satellite terminal set up satellite link, it is characterized in that:
Described main website links to each other with described 3G core net by the Iu interface, and transmits and describedly adhere to demand signalling and Packet Service by the ICBM SHF satellite terminal that authenticates to the 3G core net;
Described 3G core net is processed the described demand signalling that adheres to of ICBM SHF satellite terminal by authentication, and divides and be used in the Traffic Channel that transmits Packet Service for adhering to successful ICBM SHF satellite terminal.
2. the satellite communication system of a kind of extensive ICBM SHF satellite terminal as claimed in claim 1 is characterized in that: described ICBM SHF satellite terminal by and main website between satellite communication link send or receive the demand signalling that adheres between the Packet Service of the local area network (LAN) that is connected in this ICBM SHF satellite terminal and this ICBM SHF satellite terminal and described 3G core net.
3. the satellite communication system of a kind of extensive ICBM SHF satellite terminal as claimed in claim 1 is characterized in that: described main website transmits the 3G core net by the Iu interface and by adhering between the ICBM SHF satellite terminal of authentication asking the summation Packet Service.
4. such as the satellite communication system of one of claim 1-3 described a kind of extensive ICBM SHF satellite terminal, it is characterized in that: described 3G core net comprises SGSN, GGSN, HLR, and SGSN links to each other with described main website by described Iu interface; HLR is used for the positional information that successful ICBM SHF satellite terminal is adhered in storage; GGSN be used for transmission belong to adhere to successful ICBM SHF satellite terminal and heterogeneous network between Packet Service.
5. ICBM SHF satellite terminal cut-in method that adopts in satellite communication system described in the claim 1 comprises:
(1) described ICBM SHF satellite terminal becomes the step by the ICBM SHF satellite terminal of authentication to the authenticating of described main website;
(2) the described step of setting up synchronously satellite link by ICBM SHF satellite terminal and the described main website of authentication;
(3) described step of adhering to described 3G core net by described main website by the ICBM SHF satellite terminal of authentication,
It is characterized in that: described by the authentication ICBM SHF satellite terminal by the step that described main website adheres to described 3G core net, comprise following process:
(31) described SGSN carries out identification to described ICBM SHF satellite terminal by authentication, obtains this described user's identification marking that passes through the ICBM SHF satellite terminal of authentication, changes step (32) over to;
(32) described SGSN carries out authentication ciphering to this described ICBM SHF satellite terminal by authentication; If authentication ciphering is by then changing step (33) over to; If authentication ciphering does not pass through, then notify the satellite link between the deletion of described main website and this described ICBM SHF satellite terminal of passing through to authenticate;
(33) described SGSN is to the described ICBM SHF satellite terminal by authentication of described HLR registration after step (32), and changes step (34) over to;
(34) described SGSN distributes P-TMSI and Route Area identification code to described ICBM SHF satellite terminal by authentication, finishes described ICBM SHF satellite terminal adhering to described 3G core net by authentication.
6. ICBM SHF satellite terminal cut-in method as claimed in claim 5 is characterized in that, described ICBM SHF satellite terminal comprises to the step that authenticates of described main website:
(11) described ICBM SHF satellite terminal sends ICBM SHF satellite terminal ID, carrier number, ICBM SHF satellite terminal MAC Address by burst to described main website;
(12) described main website ICBM SHF satellite terminal ID, carrier number, the ICBM SHF satellite terminal MAC Address that can identify this described ICBM SHF satellite terminal then changes step (13) over to; Otherwise, finish the verification process of this ICBM SHF satellite terminal;
(13) described main website sends ICBM SHF satellite terminal access information, network slot structure and channel resource to this described ICBM SHF satellite terminal, finishes the verification process of this described ICBM SHF satellite terminal.
7. ICBM SHF satellite terminal cut-in method as claimed in claim 5 is characterized in that, the process that described SGSN carries out identification to described ICBM SHF satellite terminal by authentication is:
Described SGSN sends the identification demand signalling to described ICBM SHF satellite terminal by authentication;
Described ICBM SHF satellite terminal by authentication receives the backward described SGSN of transmission identification demand signalling and sends this described user's identification marking that passes through the ICBM SHF satellite terminal of authentication.
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| CN104967996A (en) * | 2015-07-08 | 2015-10-07 | 国家电网公司 | Network access authentication method and system of satellite communication network |
| CN106921448A (en) * | 2015-12-25 | 2017-07-04 | 中兴通讯股份有限公司 | The method of testing and device of satellite communication system |
| CN106921448B (en) * | 2015-12-25 | 2021-03-26 | 中兴通讯股份有限公司 | Method and device for testing satellite communication system |
| CN107592152A (en) * | 2016-07-06 | 2018-01-16 | 北京信威通信技术股份有限公司 | A kind of constellation satellite system, communication means and system based on constellation satellite system |
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| CN107094047A (en) * | 2017-06-09 | 2017-08-25 | 西安电子科技大学 | Based on pre-stored and segment transmissions the double layer minipellet method for routing of grouped data |
| CN108768498A (en) * | 2018-05-16 | 2018-11-06 | 中国电子科技集团公司电子科学研究院 | A kind of method, apparatus and micro-nano satellite of world communication |
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| CN112260745A (en) * | 2020-10-15 | 2021-01-22 | 重庆金美通信有限责任公司 | Rapid access method for low-earth-orbit satellite system |
| CN113411810A (en) * | 2021-05-24 | 2021-09-17 | 广东省大湾区集成电路与系统应用研究院 | Space-based Internet of things communication system |
| CN113411810B (en) * | 2021-05-24 | 2023-02-21 | 广东省大湾区集成电路与系统应用研究院 | Space-based Internet of things communication system |
| CN113810097A (en) * | 2021-09-28 | 2021-12-17 | 广州爱浦路网络技术有限公司 | Satellite data link establishing method, device and storage medium based on core network |
| CN114679213A (en) * | 2021-10-30 | 2022-06-28 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ka frequency band dual-mode airborne broadband satellite communication system |
| CN114679213B (en) * | 2021-10-30 | 2023-08-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ka frequency band double-mode airborne broadband satellite communication system |
| WO2023083346A1 (en) * | 2021-11-15 | 2023-05-19 | 大唐移动通信设备有限公司 | Satellite communication system, method, and apparatus, receiver network element, and storage medium |
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