CN114928399A - Inter-network interconnection system for multi-satellite communication system access and service intercommunication method - Google Patents
Inter-network interconnection system for multi-satellite communication system access and service intercommunication method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18597—Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18563—Arrangements for interconnecting multiple systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18569—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
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- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18591—Arrangements for interconnecting multiple systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an internetwork interconnection system and a service intercommunication method for multi-satellite communication system access, wherein the system adopts an internetwork interconnection architecture and comprises a management layer, a control layer and an exchange layer, wherein the management layer is responsible for the management of user information and service intercommunication rules among satellite network systems, supports distributed networking and realizes the whole network query and redundant mutual backup of the user information and the service intercommunication rules; the control layer is responsible for service logic control among all satellite network systems, supports distributed networking and can dynamically learn service routes of different control layer nodes; the exchange layer is responsible for media data exchange among all satellite network systems, supports the stacking of exchange functions, forms an exchange resource pool and meets the dynamic task requirement. The inter-network interconnection system and the plurality of satellite network systems form a heterogeneous satellite network system integrated networking system, and service intercommunication among the satellite network systems is realized. The invention realizes the unified management and service exchange of satellite users and effectively improves the comprehensive use efficiency of the heterogeneous satellite communication system.
Description
Technical Field
The invention relates to the technical field of heterogeneous satellite communication, in particular to an internetwork interconnection system for multi-satellite communication system access and a service intercommunication method.
Background
The satellite communication system has the characteristics of long communication distance, wide coverage range, flexible networking, no limitation of geographical environment conditions and ground equipment conditions and the like, and plays an important role in the field of communication. Satellite communication is an important component of a space-based information transmission system in China, is a foundation and a connecting link of a command, control, communication, computer and information, monitoring and investigation integrated system, and plays an irreplaceable role in motor communication, remote communication, broadcast communication, emergency communication and spacecraft communication.
Due to differences in service properties, application characteristics, technical systems, etc., there are many different types of satellite communication systems in the past. However, the satellite communication systems have poor interoperability, so that efficient utilization of satellite resources is difficult to realize, and the support capability for comprehensive application of different satellite systems is poor.
Patent CN103532836A discloses a satellite access gateway device, which includes a wideband and narrowband channel adaptation module, used for selecting a satellite resource link of each path of satellite network system according to a physical channel of a multi-path satellite network system and dynamically accessing each path of satellite network system; and the access control module is communicated with the wide and narrow band channel adaptation module and is used for judging the communication type of a physical channel accessed by the wide and narrow band channel adaptation module and carrying out corresponding access control on the physical channel according to the communication type of the physical channel. The patent also provides a satellite network system based on an IP multimedia system IMS and provided with the satellite access gateway equipment, which can realize interconnection and intercommunication among different satellite network systems, thereby realizing resource sharing among all satellite communication systems, further realizing providing uniform service for users of different satellite network systems and improving communication guarantee capability. Patent CN107979531A discloses a spatial heterogeneous network integrated networking method and system, relating to the technical field of network architecture in spatial communication, and the system includes: the system comprises at least one satellite network, the Internet and at least one border gateway module, wherein the number of the at least one satellite network and the number of the at least one border gateway module are the same, the at least one satellite network and the at least one border gateway module are arranged in a one-to-one correspondence manner, and each satellite network is in communication connection with the Internet; each border gateway module is used for acquiring a service request of a target user and processing the service request according to the service type of the service request, the target user is a user covered by a satellite network corresponding to the border gateway module, and the service type comprises inter-network service and/or intra-network service; the internet is used for realizing communication connection between any two border gateway modules in at least one border gateway module, and solves the technical problem that interconnection and intercommunication between satellite networks cannot be realized in the prior art.
However, the prior art still has the following disadvantages: each satellite communication system provides similar voice and data services under different scenes by using wireless satellite channels with different advantages, and voice and data services cannot be intercommunicated due to the difference of different satellite communication system technical systems and system architectures. The prior art and the method lack the unified management for users and the unified service exchange control capability when realizing interconnection and intercommunication.
Disclosure of Invention
The invention aims to provide an internetwork interconnection system and a service intercommunication method for multi-satellite communication system access, so that unified management and service exchange of satellite users are realized, and the comprehensive use efficiency of a heterogeneous satellite communication system is effectively improved.
The technical solution for realizing the purpose of the invention is as follows: an internetwork interconnection system for multi-satellite communication system access adopts an internetwork interconnection architecture, the internetwork interconnection architecture comprises a management layer, a control layer and an exchange layer, wherein:
the management layer is a management part for internetwork interconnection and is responsible for managing user information and service interconnection rules among satellite network systems; meanwhile, the management layer supports distributed networking and can realize whole-network query and redundant mutual backup of user information and service intercommunication rules;
the control layer is a control part for internetwork interconnection and is responsible for service logic control among all satellite network systems, including unified access adaptation, session service processing and data service processing; meanwhile, the control layer supports distributed networking and can perform dynamic learning of service routes of different control layer nodes;
the exchange layer is responsible for media data exchange among all satellite network systems, including voice exchange and data exchange; meanwhile, the exchange layer supports the stacking of exchange functions to form an exchange resource pool, thereby meeting the dynamic task requirement and realizing the expansion of exchange capacity.
A heterogeneous satellite network system integrated networking system comprises:
at least 1 said internetwork interconnection system, at least two satellite network systems;
the satellite network system is respectively connected with the internetwork interconnection system, and the interaction between the satellite network system and the internetwork interconnection system comprises a user plane, a control plane and a service plane interface, wherein:
the user interface is used for reporting information of satellite users, and comprises a satellite user terminal number, a terminal type, an access satellite and an access beam;
the control plane interface is used for the call control and data service control signaling interaction across the satellite communication network;
the service plane interface is used for interaction of voice data or packet data.
A service intercommunication method is based on the heterogeneous satellite network system integrated networking system and comprises voice service intercommunication among satellite network systems and data service intercommunication among satellite network systems.
Compared with the prior art, the invention has the following remarkable advantages: (1) the internetwork interconnection architecture adopts a three-layer decoupling architecture with separated management-control-exchange, keeps the mutual independence of the function realization of each layer and provides powerful support for increasingly abundant service types and dynamically changed exchange capacity; (2) the architecture has the functions of access control of a multimode satellite system, satellite user management, mobility management such as satellite mobile roaming and switching, satellite service route switching control and the like, and can realize unified management and service switching of satellite users; (3) the interfaces of each layer are standardized, so that the compatibility and the expansibility are extremely strong, and the service interconnection and intercommunication among the existing and future satellite communication systems are effectively realized.
Drawings
FIG. 1 is a schematic diagram of an internetworking architecture.
Fig. 2 is a schematic diagram of an integrated networking system of a heterogeneous satellite system.
Fig. 3 is a flow chart of heterogeneous satellite system voice service interworking.
Fig. 4 is a heterogeneous satellite system data service interworking flow diagram.
Detailed Description
The invention provides an internetwork interconnection system for multi-satellite communication system access, which adopts an internetwork interconnection architecture and comprises a management layer, a control layer and an exchange layer, wherein the internetwork interconnection architecture comprises:
the management layer is a management part for internetwork interconnection and is responsible for managing user information and service interconnection rules among satellite network systems; meanwhile, the management layer supports distributed networking and can realize whole-network query and redundant mutual backup of user information and service intercommunication rules;
the control layer is a control part for internetwork interconnection and is responsible for service logic control among all satellite network systems, including unified access adaptation, session service processing and data service processing; meanwhile, the control layer supports distributed networking and can perform dynamic learning of service routes of different control layer nodes;
the exchange layer is responsible for media data exchange among all satellite network systems, including voice exchange and data exchange; meanwhile, the exchange layer supports the stacking of exchange functions to form an exchange resource pool, thereby meeting the dynamic task requirement and realizing the expansion of exchange capacity.
As a specific embodiment, in the management layer:
the user information management realizes dynamic management of user identity, number, state, capability and position in the satellite network system needing interconnection and intercommunication;
the interconnection strategy management realizes the unified management of the interconnection strategies between different network systems and different terminals.
As a specific embodiment, in the control layer:
the unified access adaptation realizes the comprehensive adaptive access of each satellite system, performs control unification and management unification on a heterogeneous network, realizes the access independence of service control, and completes the unified processing of various network systems;
the session service processing is used for uniformly controlling the session service which is uniformly accessed and adapted and then normalized, and comprises the following steps: basic session control, service logic triggering, media resource control, and the like;
the data service processing is used for uniformly controlling the normalized data service after uniform access adaptation, and comprises the following steps: data forwarding control, address translation control, transmission guarantee control, and the like.
As a specific embodiment, in the exchange layer:
the voice exchange is responsible for the on-demand exchange of voice media carried by IP, TDM and analog lines and the conversion of different voice media formats;
the data exchange is responsible for the on-demand forwarding of L2 and L3 data, wherein L2 corresponds to a data link layer, and L3 corresponds to a network layer.
A heterogeneous satellite network system integrated networking system comprises:
at least 1 said internetwork interconnection system, at least two satellite network systems;
the satellite network system is respectively connected with the internetwork interconnection system, and the interaction between the satellite network system and the internetwork interconnection system comprises a user plane, a control plane and a service plane interface, wherein:
the user interface is used for reporting information of satellite users, and comprises a satellite user terminal number, a terminal type, an access satellite and an access beam;
the control plane interface is used for the call control and data service control signaling interaction of the cross-satellite communication network;
the service plane interface is used for interaction of voice data or packet data.
A service intercommunication method is based on the heterogeneous satellite network system integrated networking system and comprises voice service intercommunication among satellite network systems and data service intercommunication among satellite network systems.
As a specific implementation, the voice service interworking between the satellite network systems specifically includes the following steps:
a terminal of the satellite network system A initiates a call; after receiving the call request, the ground station of the satellite network system A establishes connection with the terminal;
after the ground station of the satellite network system A judges that the network is out of service, the ground station initiates the session establishment of voice to the internetwork interconnection system control layer;
the control layer of the internet interconnection system initiates the information query of the called user to the management layer; after the internetwork interconnection system management layer finds and inquires relevant interconnection rules, relevant information of the called terminal network system is returned to the control layer;
the internetwork interconnection system control layer applies related media conversion and forwarding resources to the exchange layer according to the information of the calling terminal and the called terminal; after the media resources of the exchange layer of the internetwork interconnection system are distributed, returning a media configuration response to the control layer;
initiating voice session establishment to a ground station of a satellite network system B by an internetwork interconnection system control layer;
after receiving the call request, the ground station of the satellite network system B establishes connection with the terminal; the ground station of the satellite network system B sends session update to the internetwork interconnection system control layer to inform the called party of ringing;
the internet interconnection system control layer sends session update to the satellite network system A ground station to inform the called party of ringing;
the satellite network system B terminal answers the phone by picking up the phone; the satellite network system B ground station sends session update to the internetwork interconnection system control layer to inform the called party of off-hook response;
the internet interconnection system control layer sends session update to the satellite network system A ground station and informs the called party of off-hook response; the ground station of the satellite network system A sends off-hook to the terminal of the satellite network system A;
the voice is transmitted among the satellite network system A terminal, the satellite network system A ground station, the internetwork Internet exchange layer, the satellite network system B terminal and the satellite network system B terminal.
As a specific implementation, the data service interworking between the satellite network systems specifically includes the following steps:
the satellite network system A terminal completes the link establishment with the satellite network system A ground station; the packet data message sent by the satellite network system A terminal to the satellite network system B terminal is sent to an internetwork interconnection system exchange layer through a satellite network system A ground station;
the internetwork interconnection system exchange layer checks whether the purpose in the packet data message can be reached, if so, the packet data message is directly forwarded to a satellite network system B ground station according to a forwarding table, and the packet data message is forwarded to a satellite network system B terminal by the satellite network system B ground station;
if not, the internetwork interconnection system exchange layer sends a data forwarding request to the internetwork interconnection system control layer; the internetwork interconnection system control layer initiates terminal information inquiry related to the destination address of the data message to an internetwork interconnection system management layer;
after the internetwork interconnection system management layer finds and inquires relevant interconnection rules, relevant information of a data message target terminal network system is returned to the control layer; the control layer of the internetwork interconnection system initiates session establishment of data to a ground station of a satellite network system B;
the ground station of the satellite network system B establishes connection with the terminal of the satellite network system B; the satellite network system B ground station updates the session of the internetwork interconnection system control layer and informs the completion of the link establishment;
the control layer of the internetwork interconnection system sends a related forwarding table to the exchange layer of the internetwork interconnection system; the internetwork interconnection system exchange layer forwards the related grouped data message to a target satellite network system B terminal through a satellite network system B ground station;
data is transmitted among a satellite network system A terminal, a satellite network system A ground station, an internetwork interconnection system exchange layer, a satellite network system B terminal and a satellite network system B ground station.
The invention is further described in detail below with reference to the drawings and specific embodiments.
Example 1
The embodiment provides an internetwork interconnection system for access of a multi-satellite communication system, which adopts an internetwork interconnection architecture, wherein the internetwork interconnection architecture mainly comprises a management layer, a control layer and an exchange layer, and the internetwork interconnection system realized based on the architecture can realize unified management and service exchange of satellite users.
The internetworking architecture is shown in fig. 1 below, and the function of each layer is described as follows:
(1) management layer
The management layer is mainly responsible for the management of user information and service intercommunication rules among satellite network systems and is a management part of internetwork interconnection. The user information management realizes dynamic management of user identity, number, state, capability, position and other information in a satellite network system needing interconnection and intercommunication; the interconnection and interworking strategy management realizes the unified management of the interworking strategies among different network systems and different terminals. Meanwhile, the management layer supports a distributed networking mode, can realize whole-network query and redundant mutual backup of user data and an intercommunication strategy, and increases the reliability of interconnection between networks.
(2) Control layer
The control layer is mainly responsible for the logic control of services among all satellite network systems and is a control part for interconnection among networks.
The unified access adaptation realizes the comprehensive adaptation access of each satellite system, and performs control unification and management unification on a heterogeneous network, thereby realizing the access independence of service control and finishing the unified processing of various network systems;
the session service processing uniformly controls the normalized session service after uniform access adaptation, and comprises the following steps: basic session control, service logic triggering, media resource control, and the like;
the data service processing uniformly controls the normalized data service after uniform access adaptation, and comprises the following steps: data forwarding control, address translation control, transmission guarantee control, and the like. Meanwhile, the control layer supports effective distributed networking, dynamic learning of service routes of different control layer nodes can be performed, routing failure caused by single node failure is avoided, and survivability of an internetwork interconnection framework is achieved.
(3) Exchange layer
The exchange layer is mainly responsible for the exchange of media data among the satellite network systems.
The voice exchange is responsible for the on-demand exchange of various voice media carried by IP, TDM, analog lines and the like, and the conversion of different voice media formats.
The data exchange is responsible for the on-demand forwarding of L2, L3 data. Meanwhile, the exchange layer supports the stacking of exchange functions to form an exchange resource pool, thereby meeting the dynamic task requirement and realizing the flexible expansion of exchange capacity.
Example 2
Fig. 2 is a schematic diagram of a heterogeneous satellite network system integrated networking system, which at least includes: at least one internet system (the internet system is based on the internet architecture proposed in embodiment 1) and at least two satellite networks. The satellite network system is connected with the internetwork interconnection system, and the interaction between the satellite network system and the internetwork interconnection system comprises a user plane, a control plane and a service plane interface.
The user interface is used for reporting information of satellite users, and comprises satellite user terminal numbers, terminal types, access satellites, access beams and the like.
The control plane interface is used for call control and data traffic control signaling interaction across the satellite communications network.
The service plane interface is used for interaction of voice data or packet data.
Example 3
In this embodiment, a detailed description is given to a process of implementing service interworking between different satellite network systems in an internetworking system from two service levels of voice and data.
The specific flow of voice service interworking between satellite network systems is described in fig. 3:
a terminal of the satellite network system A initiates a call; after receiving the call request, the ground station of the satellite network A establishes connection with the terminal;
after the ground station of the satellite network system A judges that the network is out of service, the ground station initiates the session establishment of voice to the internetwork interconnection system control layer;
the control layer of the internet interconnection system initiates information inquiry of the called user to the management layer; after the management layer of the internetwork interconnection system finds and inquires the relevant interconnection rules, the relevant information of the called terminal network system is returned to the control layer;
the internetwork interconnection system control layer applies related media conversion and forwarding resources to the exchange layer according to the information of the calling terminal and the called terminal; after the media resources of the exchange layer of the internetwork interconnection system are distributed, returning a media configuration response to the control layer;
the internet interconnection system control layer initiates the session establishment of voice to the satellite network system B ground station;
after receiving the call request, the ground station of the satellite network system B establishes connection with the terminal; the ground station of the satellite network system B sends session update to the internetwork interconnection system control layer to inform the called party of ringing;
the internet interconnection system control layer sends session update to the satellite network system A ground station to inform the called party of ringing;
the satellite network system B terminal answers the phone by picking up the phone; the ground station of the satellite network system B sends session update to the internetwork interconnection system control layer and informs the called party of off-hook response;
the control layer of the internetwork interconnection system sends session update to the ground station of the satellite network system A and informs the called party of off-hook response; the ground station of the satellite network system A sends off-hook to the terminal of the satellite network system A;
the voice is transmitted among the satellite network system A terminal, the satellite network system A ground station, the internetwork interconnection system exchange layer, the satellite network system B terminal and the satellite network system B terminal.
The specific process of data service interworking between satellite network systems is described in fig. 4:
the satellite network system A terminal completes the link establishment with the satellite network system A ground station; the packet data message sent by the satellite network system A terminal to the satellite network system B terminal is sent to an internetwork interconnection system exchange layer through a satellite network system A ground station;
the internetwork interconnection system exchange layer checks whether the purpose in the packet data message can be reached, if so, the packet data message is directly forwarded to a satellite network system B ground station according to a forwarding table, and the packet data message is forwarded to a satellite network system B terminal by the satellite network system B ground station;
if not, the internetwork interconnection system exchange layer sends a data forwarding request to the internetwork interconnection system control layer; the internetwork interconnection system control layer initiates terminal information inquiry related to the destination address of the data message to an internetwork interconnection system management layer;
after the internetwork interconnection system management layer finds and inquires relevant interconnection rules, relevant information of a data message destination terminal network system is returned to the control layer; the control layer of the internetwork interconnection system initiates session establishment of data to a ground station of a satellite network system B;
the ground station of the satellite network system B establishes connection with the terminal of the satellite network system B; the satellite network system B ground station updates the session of the internetwork interconnection system control layer and informs the completion of the link establishment;
the control layer of the internetwork interconnection system sends related forwarding tables to the exchange layer of the internetwork interconnection system; the internetwork interconnection system exchange layer forwards the related grouped data message to a target satellite network system B terminal through a satellite network system B ground station;
the data is transmitted among a satellite network system A terminal, a satellite network system A ground station, an internetwork interconnection system exchange layer, a satellite network system B terminal and a satellite network system B ground station.
In conclusion, the internetwork interconnection architecture adopts a three-layer decoupling architecture with separated management-control-exchange, keeps mutual independence of function realization of each layer, and provides powerful support for increasingly abundant service types and dynamically changed exchange capacity; the architecture has the functions of access control of a multimode satellite system, satellite user management, mobility management such as satellite mobile roaming and switching, satellite service route switching control and the like, and can realize unified management and service switching of satellite users; the interfaces of each layer are standardized, so that the method has extremely strong compatibility and expansibility, and the service interconnection and intercommunication among the existing and future satellite communication systems are effectively realized.
Claims (8)
1. An internetwork interconnection system for accessing a multi-satellite communication system is characterized in that the internetwork interconnection system adopts an internetwork interconnection architecture, the internetwork interconnection architecture comprises a management layer, a control layer and an exchange layer, wherein:
the management layer is a management part for internetwork interconnection and is responsible for managing user information and service interconnection rules among satellite network systems; meanwhile, the management layer supports distributed networking and can realize whole-network query and redundant mutual backup of user information and service intercommunication rules;
the control layer is a control part for internetwork interconnection and is responsible for service logic control among all satellite network systems, including unified access adaptation, session service processing and data service processing; meanwhile, the control layer supports distributed networking and can perform dynamic learning of service routes of different control layer nodes;
the exchange layer is responsible for media data exchange among all satellite network systems, including voice exchange and data exchange; meanwhile, the exchange layer supports the stacking of exchange functions to form an exchange resource pool, thereby meeting the dynamic task requirement and realizing the expansion of exchange capacity.
2. The system of claim 1, wherein the management layer is configured to:
the user information management realizes dynamic management of user identity, number, state, capability and position in the satellite network system needing interconnection and intercommunication;
the interconnection strategy management realizes the unified management of the interconnection strategies between different network systems and different terminals.
3. The internetworking system for multiple satellite communication system access of claim 1, wherein in the control layer:
the unified access adaptation realizes the comprehensive adaptive access of each satellite system, performs control unification and management unification on a heterogeneous network, realizes the access independence of service control, and completes the unified processing of various network systems;
the session service processing is used for uniformly controlling the normalized session service after uniform access adaptation, and comprises the following steps: basic session control, service logic triggering, media resource control, and the like;
the data service processing is used for uniformly controlling the normalized data service after uniform access adaptation, and comprises the following steps: data forwarding control, address translation control, transmission guarantee control, and the like.
4. The system of claim 1, wherein in the switching layer:
the voice exchange is responsible for the on-demand exchange of voice media carried by IP, TDM and analog lines and the conversion of different voice media formats;
the data exchange is responsible for the on-demand forwarding of L2 and L3 data, wherein L2 corresponds to a data link layer, and L3 corresponds to a network layer.
5. A heterogeneous satellite network system integrated networking system is characterized by comprising:
at least 1 internetworking system of any one of claims 1-4, at least two satellite networks;
the satellite network system is respectively connected with the internetwork interconnection system, and the interaction between the satellite network system and the internetwork interconnection system comprises a user plane, a control plane and a service plane interface, wherein:
the user interface is used for reporting information of satellite users, and comprises a satellite user terminal number, a terminal type, an access satellite and an access beam;
the control plane interface is used for the call control and data service control signaling interaction of the cross-satellite communication network;
the service plane interface is used for interaction of voice data or packet data.
6. A service interworking method, based on the integrated networking system of the heterogeneous satellite network system of claim 5, is characterized in that the method comprises voice service interworking between satellite network systems and data service interworking between satellite network systems.
7. The service interworking method according to claim 6, wherein voice service interworking between the satellite network systems is as follows:
a terminal of the satellite network system A initiates a call; after receiving the call request, the ground station of the satellite network system A establishes connection with the terminal;
after the ground station of the satellite network system A judges that the network is out of service, initiating voice session establishment to a control layer of an internetwork interconnection system;
the control layer of the internet interconnection system initiates the information query of the called user to the management layer; after the management layer of the internetwork interconnection system finds and inquires the relevant interconnection rules, the relevant information of the called terminal network system is returned to the control layer;
the internetwork interconnection system control layer applies related media conversion and forwarding resources to the exchange layer according to the information of the calling terminal and the called terminal; after the media resources of the exchange layer of the internetwork interconnection system are distributed, returning a media configuration response to the control layer;
initiating voice session establishment to a ground station of a satellite network system B by an internetwork interconnection system control layer;
after receiving the call request, the ground station of the satellite network system B establishes connection with the terminal; the ground station of the satellite network system B sends session update to the internetwork interconnection system control layer to inform the called party of ringing;
the internet interconnection system control layer sends session update to the satellite network system A ground station to inform the called party of ringing;
the satellite network system B terminal answers the phone by picking up the phone; the satellite network system B ground station sends session update to the internetwork interconnection system control layer to inform the called party of off-hook response;
the internet interconnection system control layer sends session update to the satellite network system A ground station and informs the called party of off-hook response; the ground station of the satellite network system A sends off-hook to the terminal of the satellite network system A;
the voice is transmitted among the satellite network system A terminal, the satellite network system A ground station, the internetwork Internet exchange layer, the satellite network system B terminal and the satellite network system B terminal.
8. The service interworking method according to claim 6, wherein the data service interworking between the satellite network systems is as follows:
the satellite network system A terminal completes the link establishment with the satellite network system A ground station; the packet data message sent by the satellite network system A terminal to the satellite network system B terminal is sent to an internetwork interconnection system exchange layer through a satellite network system A ground station;
the internetwork interconnection system exchange layer checks whether the purpose in the packet data message can be reached, if so, the packet data message is directly forwarded to a satellite network system B ground station according to a forwarding table, and the packet data message is forwarded to a satellite network system B terminal by the satellite network system B ground station;
if not, the internetwork interconnection system exchange layer sends a data forwarding request to the internetwork interconnection system control layer; the internetwork interconnection system control layer initiates terminal information inquiry related to a data message destination address to an internetwork interconnection system management layer;
after the internetwork interconnection system management layer finds and inquires relevant interconnection rules, relevant information of a data message destination terminal network system is returned to the control layer; the control layer of the internetwork interconnection system initiates the session establishment of data to the ground station of the satellite network system B;
the ground station of the satellite network system B establishes connection with the terminal of the satellite network system B; the satellite network system B ground station updates the session of the internetwork interconnection system control layer and informs the completion of the link establishment;
the control layer of the internetwork interconnection system sends related forwarding tables to the exchange layer of the internetwork interconnection system; the internetwork interconnection system exchange layer forwards the related grouped data message to a target satellite network system B terminal through a satellite network system B ground station;
the data is transmitted among a satellite network system A terminal, a satellite network system A ground station, an internetwork interconnection system exchange layer, a satellite network system B terminal and a satellite network system B ground station.
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