CN115694600A - Association registration method and system for satellite terminal - Google Patents
Association registration method and system for satellite terminal Download PDFInfo
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- CN115694600A CN115694600A CN202211142022.2A CN202211142022A CN115694600A CN 115694600 A CN115694600 A CN 115694600A CN 202211142022 A CN202211142022 A CN 202211142022A CN 115694600 A CN115694600 A CN 115694600A
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Abstract
The invention discloses a satellite terminal correlation registration method and a correlation registration system, comprising a gateway system broadcasting a control signaling containing IP domain resources to a satellite terminal through a satellite; the satellite terminal generates an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or the satellite terminal generates an interface number according to a satellite terminal electronic serial number and combines the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address; the satellite terminal sends a correlation registration request to the gateway system through a satellite according to the generated IP address; and the gateway system performs the associated registration according to the associated registration request. The invention realizes the satellite terminal association registration quickly and efficiently through one RTT message interaction.
Description
Technical Field
The invention relates to the technical field of satellite communication. And more particularly, to an association registration method and an association registration system for a satellite terminal.
Background
The satellite network system consists of a ground segment gateway system (comprising an IP gateway and a forward reverse link gateway), a space segment satellite or satellite constellation and a user segment satellite terminal. The satellite terminal is accessed to the gateway system through a satellite or a satellite constellation and then is connected with the core network. Communication data is transmitted based on an IP protocol, a satellite terminal can communicate with a gateway system only by needing an effective IP address, and the problem of IP address configuration of the satellite terminal needs to be solved. Meanwhile, the satellite terminal needs to be associated with the satellite, the IP gateway and the link gateway, so as to determine a forward link path from the IP gateway to the satellite terminal and a reverse link path from the satellite terminal to the IP gateway, thereby realizing interconnection and intercommunication between the satellite terminal and the core network.
Traditional satellite networks employ three IP addressing modes: the method comprises the steps of static configuration of a satellite terminal (configuration when the satellite terminal accesses a network), dynamic gateway allocation (provided by a registration reply message of the satellite terminal) and DHCP allocation (interactive acquisition through the DHCP message after a two-way link is communicated).
The IPv6 provides a standard stateless address automatic configuration mode, and can quickly configure the IP address of the satellite terminal. The invention broadcasts standard RA messages such as IPv6 prefix and the like in the forward data stream through the resource broadcast signaling, and the satellite terminal can rapidly and automatically configure the IP address of the satellite terminal. After the satellite terminal configures the IP address, the IP address and the associated forward and reverse link gateway serial number ID are registered in the IP gateway through a user association request, and the IP gateway can manage the IP address allocated by the satellite terminal by adopting a state mode; the message interaction of RTT solves the problems of IP addressing, association and satellite terminal registration, and the solution is simple and efficient.
Disclosure of Invention
One object of the present invention is to provide an association registration method for a satellite terminal, including:
the gateway system broadcasts a control signaling containing IP domain resources to the satellite terminal through a satellite;
the satellite terminal generates an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or the satellite terminal generates an interface number according to a satellite terminal electronic serial number and combines the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal sends a correlation registration request to the gateway system through a satellite according to the generated IP address;
and the gateway system performs the associated registration according to the associated registration request.
Preferably, the associated registration request includes a satellite terminal system allocation serial number, a satellite terminal electronic serial number, a link gateway number, an IP gateway number, a satellite number, and an IP address of the satellite terminal.
Preferably, the registering, by the gateway system, at the IP gateway of the gateway system according to the association registration request includes: and the IP gateway of the gateway system associates the IP address in the associated registration request with the serial number distributed by the satellite terminal system or the electronic serial number of the satellite terminal in the associated registration request, and completes registration.
Preferably, the interface number is a 64-bit interface number, and the IP address of the satellite terminal is a 128-bit IPv6 address.
Preferably, the gateway system periodically broadcasts signaling containing link resources and IP domain resources.
Preferably, the method further comprises: when switching the link gateway, the IP gateway of the gateway system updates the serial number of the associated link gateway and keeps the IP address of the satellite terminal unchanged.
Preferably, the method further comprises: when the IP gateway is switched, the switched IP gateway of the gateway system broadcasts an updated signaling containing IP domain resources to the satellite terminal through a satellite; the satellite terminal generates an interface number according to the electronic serial number of the satellite terminal, and combines the interface number with an IP gateway service prefix contained in the IP domain resource in the updated signaling to generate an updated IP address; the satellite terminal sends a new associated registration request to the gateway system through the satellite according to the updated IP address; and the gateway system performs the associated registration according to the new associated registration request.
Preferably, the method further comprises: and responding to the closing operation by the satellite terminal completing the registration, sending a logout association request to a gateway system before closing, and disconnecting the associated registration with the satellite terminal by the gateway system according to the logout association request.
Preferably, the method further comprises: the gateway system checks the state of the registered satellite terminal through heartbeat to judge whether the associated registration with the satellite terminal is disconnected.
Another object of the present invention is to provide an association registration system for satellite terminals, which includes a satellite terminal, a satellite and a gateway system;
the gateway system is used for broadcasting signaling to the satellite terminal through the satellite, and the signaling comprises link resources and IP domain resources;
the satellite terminal is used for generating an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or is used for generating an interface number according to a satellite terminal electronic serial number and combining the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal is further used for sending an associated registration request to the gateway system through the satellite according to the generated IP address;
the gateway system is also used for performing the associated registration according to the associated registration request.
The invention has the following beneficial effects:
the registration method of the satellite terminal ensures the uniqueness of the generated IP address, omits DAD check, accelerates the process of IP addressing, and quickly and efficiently realizes the associated registration of the satellite terminal through one RTT message interaction.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a flowchart of a registration method of a satellite terminal according to the present invention.
Fig. 2 shows a transparent star schema connection topology as described in the present invention.
Figure 3 shows a regenerative star mode connection topology according to the present invention.
Fig. 4 shows a schematic diagram of IP addressing and associated registration of a satellite terminal according to the present invention.
Fig. 5 is a schematic diagram illustrating a satellite terminal modifying link gateway association according to the present invention.
Fig. 6 shows a schematic diagram of modifying an IP gateway association by a satellite terminal according to the present invention.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying fig. 1-6. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The invention aims to provide an associated registration method of a satellite terminal, which comprises the following steps:
the gateway system broadcasts a control signaling containing IP domain resources to the satellite terminal through a satellite;
the satellite terminal generates an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or the satellite terminal generates an interface number according to a satellite terminal electronic serial number and combines the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal sends a correlation registration request to the gateway system through a satellite according to the generated IP address;
and the gateway system performs the associated registration according to the associated registration request.
The registration method of the satellite terminal comprises two modes of configuring an IP address:
statically configuring an IP address:
the gateway system periodically broadcasts a satellite terminal system with a satellite through a satellite to distribute a mapping table of a serial number SAI (System AssignedID) and an IP address, and the satellite terminal generates the IP address according to the satellite terminal system distribution serial number and the IP address distribution mapping table contained in the IP domain resource.
Stateless auto-configuration of IP addresses:
the gateway system broadcasts a signaling to the satellite terminal through a satellite, the signaling comprises a link resource and an IP domain resource, the satellite terminal generates an IP address according to the electronic serial number of the satellite terminal and the IP gateway service prefix combination contained in the IP domain resource, wherein the satellite terminal generates a 64-bit interface number InterfaceID through an algorithm by using the own 32-bit ESN, and the 64-bit automatic generation address and the 64-bit IP address prefix broadcasted by the gateway system form a 128-bit IPv6 address of the satellite terminal.
Whether the IP address is statically configured or automatically configured stateless, the IP address needs to be reported to an IP gateway accessed by the satellite terminal when the user registers. The IP gateway associates the IP address with the ESN/SAI of the satellite terminal for subsequent auditing, authorization, accounting and management.
In a particular embodiment, as shown in figure 4,
an IP gateway in a gateway system informs a link gateway in the gateway system of own IP domain resources and resource use conditions, the link gateway combines the own link resources and the use conditions with the IP domain resources and broadcasts the resources to a satellite terminal through a satellite uniformly, the satellite terminal selects the IP gateway according to received broadcast signaling, an SLAAC (stateless address automatic configuration) mode is used, an IP address is generated by using a prefix of the IP gateway selected by the satellite terminal, an air interface IP address is configured, after the IP address is addressed, the satellite terminal immediately starts an associated registration process, the satellite terminal sends an associated registration request to the IP gateway, and the request message comprises a user system number SAI, a satellite terminal electronic serial number ESN, the serial number of a link gateway MCS/RCM, the serial number of the IP gateway, a forwarding star number and the IP address of the air interface of the satellite terminal. And the IP gateway processes the association registration request and sends association confirmation to the satellite terminal. Proxy prefix information that the satellite terminal can assign addresses to LAN port cascade users is included in the association confirmation.
And after the satellite terminal receives the association confirmation, the proxy prefix information is received under the condition of no error. The satellite terminal configures the IP address of the LAN port according to the algorithm, broadcasts the agent prefix information at the LAN port, and configures the IP address of the LAN port cascade user.
DAD check is needed before the IP address takes effect, but the uniqueness of the stateless address automatic configuration and the used ESN (electronic serial number) of the satellite terminal ensures the uniqueness of the automatically generated address, and the DAD check is omitted.
In a particular embodiment, as shown in figure 5,
the satellite terminal selects the link gateway and the IP gateway at the time of registration, and performs associated registration. And continuously receiving all the link resource information and IP domain information broadcasted by the IP gateway and the link gateway while the satellite terminal is associated with the current gateway system and provides services.
And the satellite terminal judges whether the link gateway needs to be switched or not and selects a new link gateway according to the algorithm. When the link gateway is switched, the satellite terminal sends a correlation modification request to the IP gateway through the satellite, wherein the request comprises a satellite terminal system distribution serial number SAI, a satellite terminal electronic serial number ESN, the serial number of a new link gateway MCS/RCM, the IP gateway serial number, the satellite serial number and the IP address of a satellite terminal gap, and the IP gateway processes the correlation modification request and sends correlation confirmation to the satellite terminal. The associated link gateway number is updated.
In a specific embodiment, as shown in figure 6,
when the satellite terminal is registered, the link gateway and the IP gateway are selected and associated registration is carried out, and all the link resource information and IP domain information broadcasted by the IP gateway and the link gateway are continuously received while the satellite terminal is associated with the current gateway system and provides services.
And the satellite terminal judges whether to switch the IP gateway and selects a new IP gateway according to the algorithm, and when the IP gateway is switched, the satellite terminal reconfigures the IP address.
The method comprises the steps that a satellite terminal cancels a correlation request to an original IP gateway by using an original IP address, then the updated IP gateway broadcasts an updated IP domain resource signaling to the satellite terminal through a satellite, the satellite terminal generates an interface number according to an electronic serial number of the satellite terminal after receiving the signaling, and combines the interface number with an updated IP gateway service prefix contained in an IP domain resource to generate an updated IP address, the satellite terminal sends a correlation registration request to a gateway system through the satellite according to the generated updated IP address, and the gateway system performs correlation registration according to the correlation registration request. The association confirmation includes new agent prefix information that the satellite terminal can assign addresses to LAN port cascade users.
The request message comprises a satellite terminal system distribution serial number SAI, a satellite terminal electronic serial number ESN, a serial number of a link gateway MCS/RCM, an updated IP gateway serial number, a satellite serial number and an updated satellite terminal IP address.
And after the satellite terminal receives the association confirmation, the new agent prefix information is received under the condition of no error. And the satellite terminal configures the IP address of the LAN port according to the algorithm, broadcasts the new prefix information at the LAN port and configures the IP address of the LAN port cascade user.
Therefore, the user association information is updated to be a new IP gateway, a new IP address is configured for the air interface, and the new IP address is distributed for the cascade user of the LAN interface.
The invention aims to provide an associated registration system of a satellite terminal, which comprises a satellite terminal UT (UserTerminal), a satellite and a gateway system,
the gateway system comprises an IP gateway IPGW (IPgateway) and a link gateway Linkgateway, a satellite terminal and a satellite network,
the link gateway linkgatteway includes a forward link gateway MCS (modcodserevingsystem) and a reverse link gateway RCM (ReturnChannelManager).
The physical layer satellite modem SM (satellite Modem) is embedded in the UT, MCS/RCM or OBP.
The gateway system is used for broadcasting signaling to the satellite terminal through the satellite, and the signaling comprises link resources and IP domain resources;
the satellite terminal is used for generating an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or is used for generating an interface number according to a satellite terminal electronic serial number and combining the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal is further used for sending an associated registration request to the gateway system through the satellite according to the generated IP address;
the gateway system is also used for performing the associated registration according to the associated registration request.
The working modes of the registration system comprise: transparent star mode and regenerative star mode
Transparent star schema as shown in fig. 2, satellites are used for information transfer
The regeneration satellite mode is shown in fig. 3, the satellite includes an on-board processing unit OBP, and the satellite extracts the communication information, and sequentially performs demodulation, decoding, routing switching, encoding, modulation and retransmission.
When the satellite works in a transparent mode, the satellite terminal and the link gateway are in the same physical connection, and after the physical channels are synchronized, the satellite terminal can receive the broadcast signaling sent by the link gateway and can use the random access channel to send the reverse signaling.
When the satellite works in a regeneration forwarding mode, the satellite terminal is in the same physical connection with a link gateway of an on-board processing unit (OBP) running on the satellite, and after physical channels are synchronized, the satellite terminal can receive broadcast signaling sent by the satellite-borne link gateway and can use a random access channel to send reverse signaling.
In the transparent star mode, the link gateway operates in the ground segment, and in the regenerated star mode, the link gateway operates in an on-board processing unit on the satellite.
TABLE 1 IP Address prefix broadcast content
TABLE 2 satellite terminal for associated application content
Table 3 IP gateway validation of association request content
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. An association registration method of a satellite terminal, comprising:
the gateway system broadcasts a control signaling containing IP domain resources to the satellite terminal through a satellite;
the satellite terminal generates an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or the satellite terminal generates an interface number according to a satellite terminal electronic serial number and combines the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal sends a correlation registration request to the gateway system through a satellite according to the generated IP address;
and the gateway system performs the associated registration according to the associated registration request.
2. The method of claim 1, wherein the association registration request comprises a satellite terminal system assignment serial number, a satellite terminal electronic serial number, a link gateway number, an IP gateway number, a satellite number, and an IP address of the satellite terminal.
3. The association registration method of the satellite terminal according to claim 1, wherein the gateway system performing registration at an IP gateway of the gateway system according to the association registration request comprises: and the IP gateway of the gateway system associates the IP address in the associated registration request with the serial number distributed by the satellite terminal system or the electronic serial number of the satellite terminal in the associated registration request, and completes registration.
4. The method according to claim 1, wherein the interface number is a 64-bit interface number, and the IP address of the satellite terminal is a 128-bit IPv6 address.
5. The method of claim 1, comprising: the gateway system periodically broadcasts signaling containing link resources and IP domain resources.
6. The association registration method for a satellite terminal according to claim 3, wherein the method further comprises: when the link gateway is switched, the IP gateway of the gateway system updates the number of the associated link gateway, and the IP address of the satellite terminal is kept unchanged.
7. The method of claim 3, further comprising: when the IP gateway is switched, the switched IP gateway of the gateway system broadcasts an updated signaling containing IP domain resources to the satellite terminal through the satellite; the satellite terminal generates an interface number according to the electronic serial number of the satellite terminal, and combines the interface number with an IP gateway service prefix contained in the IP domain resource in the updated signaling to generate an updated IP address; the satellite terminal sends a new associated registration request to the gateway system through the satellite according to the updated IP address; and the gateway system performs the associated registration according to the new associated registration request.
8. The method for associating registration with a satellite terminal according to claim 1, further comprising: responding to the closing operation by the satellite terminal which finishes the registration, sending a logout association request to a gateway system before closing, and disconnecting the association registration with the satellite terminal by the gateway system according to the logout association request.
9. The method for associating registration with a satellite terminal according to claim 1, further comprising: the gateway system checks the state of the registered satellite terminal through heartbeat to judge whether the associated registration with the satellite terminal is disconnected.
10. An associated registration system of a satellite terminal is characterized by comprising the satellite terminal, a satellite and a gateway system;
the gateway system is used for broadcasting signaling to the satellite terminal through the satellite, and the signaling comprises link resources and IP domain resources;
the satellite terminal is used for generating an IP address according to a satellite terminal system distribution serial number and a distribution mapping table of the IP address contained in the IP domain resource, or is used for generating an interface number according to a satellite terminal electronic serial number and combining the interface number with an IP gateway service prefix contained in the IP domain resource to generate the IP address;
the satellite terminal is further used for sending an associated registration request to the gateway system through the satellite according to the generated IP address;
the gateway system is also used for performing the associated registration according to the associated registration request.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031102A1 (en) * | 2000-05-02 | 2002-03-14 | Globalstar L.P. | On-board DNS service for a satellite ISP system using non-geosynchronous orbit satellites |
| KR20030058902A (en) * | 2001-12-31 | 2003-07-07 | 주식회사 케이티 | Method of Providing Satellite Internet Service using DHCP and IP/MAC and System using the Same |
| CN104661276A (en) * | 2014-12-19 | 2015-05-27 | 中国人民解放军理工大学 | IP-based multi-beam satellite mobile communication routing method |
| CN106506061A (en) * | 2016-11-08 | 2017-03-15 | 中国电子科技集团公司第七研究所 | The data transmission method of satellite communication system and system |
| CN112422701A (en) * | 2019-08-20 | 2021-02-26 | 华为技术有限公司 | Domain name system query method and communication device |
| CN113347282A (en) * | 2021-05-25 | 2021-09-03 | 清华大学 | IP address distribution and duplicate checking method and system for satellite internet |
| CN114679303A (en) * | 2022-03-04 | 2022-06-28 | 清华大学 | Source address verification method and device for satellite Internet |
-
2022
- 2022-09-20 CN CN202211142022.2A patent/CN115694600B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031102A1 (en) * | 2000-05-02 | 2002-03-14 | Globalstar L.P. | On-board DNS service for a satellite ISP system using non-geosynchronous orbit satellites |
| KR20030058902A (en) * | 2001-12-31 | 2003-07-07 | 주식회사 케이티 | Method of Providing Satellite Internet Service using DHCP and IP/MAC and System using the Same |
| CN104661276A (en) * | 2014-12-19 | 2015-05-27 | 中国人民解放军理工大学 | IP-based multi-beam satellite mobile communication routing method |
| CN106506061A (en) * | 2016-11-08 | 2017-03-15 | 中国电子科技集团公司第七研究所 | The data transmission method of satellite communication system and system |
| CN112422701A (en) * | 2019-08-20 | 2021-02-26 | 华为技术有限公司 | Domain name system query method and communication device |
| CN113347282A (en) * | 2021-05-25 | 2021-09-03 | 清华大学 | IP address distribution and duplicate checking method and system for satellite internet |
| CN114679303A (en) * | 2022-03-04 | 2022-06-28 | 清华大学 | Source address verification method and device for satellite Internet |
Non-Patent Citations (1)
| Title |
|---|
| 王京林;曹志刚;: "LEO卫星网络中无缝切换管理技术研究", 宇航学报, no. 03, pages 660 - 664 * |
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