CN103634041A - A session management method based on a new generation satellite communication system, a system thereof and an apparatus thereof - Google Patents
A session management method based on a new generation satellite communication system, a system thereof and an apparatus thereof Download PDFInfo
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- CN103634041A CN103634041A CN201210297228.2A CN201210297228A CN103634041A CN 103634041 A CN103634041 A CN 103634041A CN 201210297228 A CN201210297228 A CN 201210297228A CN 103634041 A CN103634041 A CN 103634041A
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Abstract
The embodiment of the invention discloses a session management method based on a new generation satellite communication system, a system thereof and an apparatus thereof. The session management method based on the new generation satellite communication system comprises the following steps: satellites exchange processing load decisions and a control unit obtains calling party information, called party information and business information; a processing mode for a satellite on-board load is determined; if a calling party and a called party belong to different communication networks, the satellite on-board processing mode is determined to be transparent forwarding; if the calling party and the called party belong to a same communication network, and the calling part requests a voice service, the satellite on-board processing mode is determined to be satellite on-board subcarrier exchange; and if the calling party and the called party belong to the same communication network, and the calling party requests data business, the satellite on-board processing mode is determined to be satellite on-board IP exchange, and satellite on-board load processing mode instruction information is emitted to a satellite. Through the utilization of the technical scheme above, fusion with a ground EPS network is convenient, and a time delay in communication is reduced. In addition, the utilization of satellite on-board resources is improved.
Description
Technical field
The present invention relates to satellite communication field, particularly the conversation managing method based on satellite mobile communication system of new generation, system and device.
Background technology
Satellite communication refers to and utilizes satellite as relay station, take land mobile communication technology as basis, in conjunction with technology such as Space Communication Satellite technology, computer and microelectronic integrated circuits, supports user communication terminal to realize the system of intercommunication mutually anywhere.Satellite communication system, exists at present one to jump and two kinds of communication patterns of double bounce between terminal, on corresponding star, load processing mode is on star, to exchange and two kinds of transparent forwarding.Double bounce communicating requirement has forwarded communication twice via satellite, and business time delay is larger; One jumps that communicating requirement is disposable has forwarded communication via satellite, and business time delay is little, and treatment technology on must employing star, higher to resource requirement on star.
The network architecture of satellite mobile communication is based on 3GPP R4 (3rd Generation Partnership Project at present, Release4, third generation partner program edition 4) standard builds, satellite communication network framework based on UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) as shown in Figure 1.If the part using satellite as satellite radio access network node or a kind of extension means, space segment is compared not too large variation with ground UMTS network model, just at Radio Access Network, has increased satellite and has controlled node, satellite path control deivce; The functional entitys such as onboard switch coordination server in core net, have been increased.Newly-increased network entity function is as follows: satellite is controlled node and controlled by satellite path control deivce, is that ground network is controlled the especially ground installation node of switching matrix network of satellite load.Satellite path control deivce is the major function entity that carries out switching and routing decision-making.Onboard switch coordination server is as exchanging policy-making body on satellite wireless communication Access Network culminant star at the corresponding function entity of core net, the user data of the reciprocal exchange of business on star is carried out in collection, to complete corresponding management, and by the coordination of Yu Ge mobile switching centre, suspend where necessary the swap operation of user session in the equipment such as land circuit switched-media gateway obtained interchange channel on star, further to reduce system resource overhead.
The communication process of the transparent forwarding pattern under the satellite communication network framework based on UMTS: the call flows path under normal transparent forwarding mode is from user terminal transponder via satellite, come downwards to gateway node and the gateway network controller of satellite radio Access Network, then deliver to core net.Signaling is that signal first sends to circuit domain media gateway at the idiographic flow of core net, through mobile switch server, further sends to other corresponding functional entitys as vision location server, home location server, AUC, equipment identity register etc.After obtaining the service area and respective beam community of called user terminal, through corresponding mobile switch server and circuit domain media gateway, and be sent to gateway network controller and gateway node by interface, then go upward to satellite repeater, finally by downlink user link, be sent to called user terminal.The communication process of processing and exchanging pattern on star under satellite communication network framework based on UMTS: call treatment signaling is processed completely on star, signaling is processed and data retransmission carries out completely on star.
In prior art, satellite communication system is the UMTS network architecture based on 3GPP R4 mainly, and communication pattern also mainly be take transparent forwarding as main, when only resource is enough on star, just may adopt the mode of processing on star to realize a jumping communication.Yet land mobile communication system is based on EPS (Evolved Packet System, the evolved packet system) network architecture, the different ground integrated mismatch problems of star that cause of satellite and ground communication system.In addition, restriction due to treatment technology on resource on star and star, current satellite communication pattern can only be double bounce communication, be that on star, load processing mode is transparent forwarding, and do not distinguish communicating pair terminal and whether belong to identical communication network, the business of Ye Bu district office request is speech business or data service, thereby causes time delay larger, and the waste of resource on star.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of conversation managing method, system and device based on New Generation of Satellite Communication System.System is based on the EPS network architecture, and whether distinguish calling and called is same communication network user, and the type of service of communication, and adopts a kind of session management mode of optimization.Technical scheme is as follows:
The embodiment of the present invention provides a kind of conversation managing method based on New Generation of Satellite Communication System, comprising:
Onboard switch is processed load decision-making and control unit obtains calling and called user profile and business information;
According to calling and called user profile and business information, judge load processing mode on star;
To load processing mode command information on satellite launch star.
The embodiment of the present invention provides a kind of session management device based on New Generation of Satellite Communication System, comprising:
User profile and business information receive unit, for receiving user profile and business information;
Satellite load processing mode the first identifying unit, if calling subscriber and called subscriber belong to different communication network users, judges that on Satellite, load processing mode is transparent forwarding.If calling subscriber and called subscriber belong to satellite mobile communication network users together, judge that on Satellite, load processing mode, as exchanging on star, then enters satellite load processing mode the second identifying unit.
Satellite load processing mode the second identifying unit, if load processing mode the first identifying unit judges on Satellite that load processing mode is as exchanging on star on Satellite, and what business information was designated as calling subscriber's request is data service, on Satellite, load processing mode is IP exchange on star.If load processing mode is as exchanging on star on the Satellite that on Satellite, load processing mode the first identifying unit is judged, and business information is designated as calling subscriber request is speech business, and on Satellite, load processing mode is subcarrier exchange on star.
Load processing mode command information transmitting element on Satellite, for sending load processing mode command information on Satellite.On Satellite, load processing mode command information comprises transparent forwarding, IP exchange on star, subcarrier exchange on star.
The embodiment of the present invention provides a kind of conversation managing method based on New Generation of Satellite Communication System, system and device.Onboard switch is processed load decision-making and control unit obtains calling and called user profile and business information, and when calling and called user terminal belongs to different communication network users, satellite load processing mode is transparent forwarding.When calling and called user terminal belongs to same communication network termination user, and the business between calling and called is data service, and satellite load processing mode is IP exchange on star; When calling and called user terminal belongs to same communication network terminal use, and the business between calling and called is speech business, and satellite load processing mode is subcarrier exchanged form on star.After satellite load processing mode is judged, to load processing mode command information on satellite launch star.By method provided by the invention, be convenient to realize and the ground EPS network integration.In addition, according to communicating pair terminal, whether belong to identical communication network, and request type of service and adopt load processing mode on different stars, can rationally utilize resource on star, reduced communication delay simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, by the accompanying drawing of required use in embodiment or description of the Prior Art being done simply, introduce below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the satellite communication network Organization Chart based on UMTS
Fig. 2 is the satellite communication network Organization Chart of the embodiment of the present invention one based on EPS
Fig. 3 is embodiment of the present invention calling flow chart
Fig. 4 is the called call flow diagram of the embodiment of the present invention one
Fig. 5 is that embodiment of the present invention onboard switch is processed load decision-making and the flow chart of control unit to load processing mode judgement on star
Fig. 6 is the satellite communication network Organization Chart of the embodiment of the present invention two based on EPS
Fig. 7 is the called call flow diagram of the embodiment of the present invention two
Fig. 8 is 31 kinds of the embodiment of the present invention session management device schematic diagram based on satellite mobile communication system of new generation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In order to make the advantage of technical solution of the present invention clearer, below in conjunction with drawings and Examples, the present invention is elaborated.
Embodiment mono-:
The satellite communication network framework of the present embodiment based on EPS, referring to Fig. 2.Network forms:
User terminal: can be fixed terminal, can be also mobile terminal.
Satellite radio Access Network: formed by satellite and ground Access Network.Wherein on Satellite, processor mainly forms transparent forwarding module by transparent forwarding module and exchange processing module and comprises user link processing unit and two parts of feeding link processing unit, carries out respectively the signal of user link and feeding link and processes.Exchange processing module comprises: NodeB (Node B, Node B) functional entity, mainly completes as despreading descrambling, demodulating and decoding and the functions such as modulation, scrambling spread spectrum of recoding; The satellite on ground is controlled node corresponding unit, mainly completes satellite load and defends the signaling reception of exchange and transmit; Radio network controller functional entity, has coordinated and has related to the cocommutative calling control of star, mobile management function, completes and relates to the cocommutative radio resource management function of star.On star, exchange functional entity, mainly complete and relate to the cocommutative calling control of star, mobile management function.
Ground Access Network comprises gateway station and strengthens node, and onboard switch is processed load decision-making and control unit.
Gateway station strengthens nodal function and is similar to eNodeB (the evolved NodeB in the EPS network of ground, strengthen Node B) function, major function can be divided into modulation /demodulation, wireless transmission control, RRM, IP message compression, encryption and decryption is controlled and realize several parts such as maintenance of mobile management and business radio bearer with Mobility Management Entity and the mutual signaling of gateway module.Onboard switch is processed load decision-making and control unit, is mainly responsible for analysis, the judgement of satellite communication mode.It and ground main body branch, by two interfaces, are responsible for respectively: with processor on ground main body branch interacting user information and control star.The decision-making of the load of onboard switch processing is in the present embodiment connected respectively gateway station with control unit and strengthens node, and Mobility Management Entity.
Gateway: the core of core net operation exchange.It connects a plurality of gateway stations and strengthens node, and as the bridge of the service interaction between mobile subscriber and user and ground outer net service interaction, first all groupings of the IP from Access Network must be processed by the exchange of gateway.Public packet Service Gateway is that satellite mobile communication network and other Packet Service nets of ground are realized the gateway device interconnecting, public packet Service Gateway receives the IP data that go out net from gateway, according to IP route processing result, grouping is sent to suitable outer net.
Mobility Management Entity: the core node of Signalling exchange between processing terminal and core net in network, its major function comprises foundation, safeguards and switching, usertracking and the handover management of control, EPS free time and connection status that release service bearer, terminal are connected with Access Network and the functions such as security control of data.
User home to return to server: data storages and information support equipment, recording static state or the dynamic datas such as mobile management entity device information of user's the information of opening an account, service authorization information, current use service bearer information, current registration.
Calling flow process, referring to Fig. 3, comprising:
101, calling terminal sends business request information, and link sends to satellite first via satellite, and is forwarded to gateway station enhancing node by satellite.This business request information is carried at RRC (Radio Resource Control, radio resource control) in message, the temporary mark that comprises calling terminal user in RRC message, the address information of terminal called, and the type of service (data or voice) of request, and together send to gateway station to strengthen node.
102, gateway station enhancing node sends to Mobility Management Entity by the business request information of calling terminal, comprises calling terminal user's temporary mark simultaneously.
103, authentication and security process, determine the legitimacy of terminal call.After this step completes, between terminal and network, have common secure session key.
104, Mobility Management Entity sends initialization context and sets up message and strengthen node to gateway station.Carry the address of gateway, EPS carrying QoS (Quality of Service, service quality) etc. simultaneously.
105, gateway station strengthens node execution radio bearer process of establishing, the safe bearing load of setting up user's face in this process.When setting up user plane radio bearers, EPS loaded state is synchronous between terminal and network.The radio bearer that gateway station enhancing node sends is set up message and is sent to calling terminal through satellite.
106, the upstream data that calling terminal sends first passes through satellite, is then transmitted to gateway station and strengthens node; Gateway station strengthens node and is transmitted to gateway; Gateway is transmitted to grouped data network gateway.Gateway address obtains in step 104.
107, gateway station enhancing node sends initialization context and has set up message to Mobility Management Entity, carries gateway station and strengthen node address etc. in message.After this step completes, carrying, default bearer or dedicated bearing between terminal and network, have been set up.
108, Mobility Management Entity sends and revises bearing request message to gateway, upgrades user's face relevant bearer.In this message, carry gateway station and strengthen node address.
109, gateway sends and revises bearing response message to Mobility Management Entity, comprises gateway address in message.
Calling terminal sends after call request, and terminal called responding process, referring to Fig. 4, comprising:
201, when gateway receives the downstream data packet that calling terminal sends, gateway is buffer memory downlink data packet, and indicates the Mobility Management Entity into terminal called service.
202, gateway sends downstream data packet notification message to Mobility Management Entity.
203, Mobility Management Entity is to gateway response downlink data notification response message.
If registered terminal called user's message in 204 Mobility Management Entity, the gateway station of the tracking area that Mobility Management Entity transmission beep-page message is registered to terminal called strengthens node.The tracking area that comprises terminal called place in message, the temporary mark of terminal called, call business type indication (voice or data), and paging priority Indication message etc.
205, gateway station strengthens node from Mobility Management Entity paging receiving message, through satellite, to terminal called, sends beep-page message.
206, terminal called is received after beep-page message, through satellite, to gateway station, strengthens node response service request message, shows to respond the calling of calling terminal.
207, gateway station strengthens node to Mobility Management Entity forwarding service request message.
208, authentication and security process, determine the legitimacy of terminal call.After this step completes, between terminal and network, have common secure session key.
209, Mobility Management Entity is processed load decision-making and control unit transmission user profile and business information to onboard switch.User profile comprises, calling subscriber and called subscriber are satellite mobile communication network users or fixed communication network users.Business information comprises, the business of caller request is speech business or data service.
Onboard switch is processed load decision-making and control unit is received after user profile and business information, carries out load processing mode judgement flow process on star, referring to Fig. 5, comprising:
301, onboard switch processing load decision-making and control unit obtain user profile and business information.
If 302 calling subscribers and called subscriber belong to different communication network users, it is 303 transparent forwarding that onboard switch processing load decision-making and control unit are judged to be load processing mode on star; If calling subscriber and called subscriber belong to satellite mobile communication network users, carry out step 304.
304,, according to business information, if calling subscriber's request is data service, judge that on star, load processing mode is IP exchange on 305 stars; If calling subscriber's request is speech business, judge that on star, load processing mode is subcarrier exchange on 306 stars.
210, onboard switch processing load decision-making and control unit send to satellite by load processing mode result of determination on star, in message, indicate the exchange processing mode that satellite load should be selected, have following three kinds: subcarrier exchange on IP exchange, star on transparent forwarding, star.
211, Mobility Management Entity strengthens node transmission initialization context foundation request to gateway station.
212, between terminal called and gateway station enhancing node, set up radio bearer.
213, terminal called sends upstream data to grouped data network gateway.
214, gateway station enhancing node sends initialization context to Mobility Management Entity and has set up message.
215, Mobility Management Entity sends and revises bearing request message to gateway.
216, gateway is to Mobility Management Entity response modification bearing response message.
Embodiment bis-:
The satellite communication network framework of the present embodiment based on EPS, referring to Fig. 6.Network composition and each functional entity major function are identical with embodiment mono-, are not just repeating here, can be referring to described in embodiment mono-.Difference is: in the network architecture of the present embodiment, onboard switch is processed load decision-making and is only connected with gateway station enhancing node with control unit.
The present embodiment calling flow process, with embodiment mono-, described in embodiment mono-, repeats no more here.
The called call flow of the present embodiment, referring to Fig. 7, comprising:
401, when gateway receives the downstream data packet that calling terminal sends, gateway is buffer memory downlink data packet, and indicates the Mobility Management Entity into terminal called service.
402, gateway sends downstream data packet notification message to Mobility Management Entity.
403, Mobility Management Entity is to gateway response downlink data notification response message.
If registered terminal called user's message in 404 Mobility Management Entity, the gateway station of the tracking area that Mobility Management Entity transmission beep-page message is registered to terminal called strengthens node.The tracking area that comprises terminal called place in message, the temporary mark of terminal called, call business type indication (voice or data), and paging priority Indication message etc.
405, gateway station strengthens node from Mobility Management Entity paging receiving message, through satellite, to terminal called, sends beep-page message.
406, terminal called is received after beep-page message, through satellite, to gateway station, strengthens node response service request message, shows to respond the calling of calling terminal.
407, gateway station strengthens node by Mobility Management Entity forwarding service request message.
408, authentication and security process, determine the legitimacy of terminal call.After this step completes, between terminal and network, have common secure session key.
409, gateway station strengthens node to onboard switch processing load decision-making and control unit transmission user profile and business information.User profile comprises, calling subscriber and called subscriber are satellite mobile communication network users or fixed communication network users.Business information comprises, the business of caller request is speech business or data service.
Onboard switch is processed load decision-making and control unit receives after user profile and business information, carries out load processing mode judgement flow process on star, and referring to Fig. 5, deterministic process is identical with embodiment mono-, specifically as seen in embodiment mono-described in step 301～306.
410, onboard switch processing load decision-making and control unit send to satellite by load processing mode result of determination on star, in message, indicate the exchange processing mode that satellite load should be selected, have following three kinds: subcarrier exchange on IP exchange, star on transparent forwarding, star.
411, Mobility Management Entity strengthens node transmission initialization context foundation request to gateway station.
412, between terminal called and gateway station enhancing node, set up radio bearer.
413, terminal called sends upstream data to grouped data network gateway.
414, gateway station enhancing node sends initialization context to Mobility Management Entity and has set up message.
415, Mobility Management Entity sends and revises bearing request message to gateway.
416, gateway is to Mobility Management Entity response modification bearing response message.
Embodiment tri-: a kind of session management device based on satellite mobile communication system of new generation, participate in Fig. 8, and comprising:
501, user profile and business information receiving element, for receiving user profile and business information;
502, load processing mode the first identifying unit on star.If calling subscriber and called subscriber belong to different communication network users, judge that on Satellite, load processing mode is transparent forwarding.If calling subscriber and called subscriber belong to satellite mobile communication network users together, judge that on Satellite, load processing mode, as exchanging on star, turns to load processing mode the second identifying unit on 503 stars.
503, load processing mode the second identifying unit on star.If load processing mode the first identifying unit judges on Satellite that load processing mode is as exchanging on star on Satellite, and business information is designated as calling subscriber's request is data service, and on Satellite, load processing mode is IP exchange on star.If load processing mode is as exchanging on star on the Satellite that on Satellite, load processing mode the first identifying unit is judged, and business information is designated as calling subscriber request is speech business, and on Satellite, load processing mode is subcarrier exchange on star.
504, load processing mode command information transmitting element on Satellite, comprehensive 502,503 result of determination, sends to satellite by load processing mode command information on star, and command information comprises: transparent forwarding, IP exchange on star, subcarrier exchange on star.
For device embodiment, because it is substantially corresponding to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit that loses explanation as this example can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. the conversation managing method based on New Generation of Satellite Communication System, is characterized in that, comprising:
Onboard switch is processed load decision-making and control unit obtains calling and called user profile and business information;
According to calling and called user profile and business information, judge load processing mode on star;
To load processing mode command information on satellite launch star.
2. method according to claim 1, is characterized in that, the calling and called user profile that onboard switch processing load decision-making and control unit obtain comprises:
Calling subscriber is satellite mobile communication network users;
Or
Calling subscriber is fixed communication network users.
Called subscriber is satellite mobile communication network users;
Or
Called subscriber is fixed communication network users.
3. method according to claim 1, is characterized in that, the calling and called service information that onboard switch processing load decision-making and control unit obtain comprises:
What calling subscriber asked is speech business;
Or
What calling subscriber asked is data service.
4. method according to claim 1, is characterized in that, according to calling and called user profile and business information, judges load processing mode on star, comprises;
If described calling and called user belongs to different communication network users, on star, load processing mode is transparent forwarding;
If described calling and called user belongs to satellite mobile communication network users together, on star, load processing mode is to exchange on star.
5. according to the method described in claim 3 and 4, it is characterized in that, if described calling and called subscriber equipment belongs to satellite together, move mobile network user, on star, load processing mode is to exchange on star, comprising:
If calling and called user belongs to satellite mobile communication network users together, and calling subscriber request is speech business, and on star, load processing mode is IP exchange on star;
If calling and called user belongs to satellite mobile communication network users together, and calling subscriber request is data service, and on star, load processing mode is subcarrier exchange on star.
6. according to claim Isosorbide-5-Nitrae, the method described in 5, is characterized in that, to load processing mode instruction on satellite launch star, comprising:
Transparent forwarding;
Or
IP exchange on star;
Or
Subcarrier exchange on star.
7. method according to claim 1, is characterized in that, onboard switch processing load decision-making and control unit comprise before obtaining calling and called user profile and business information:
In called subscriber's call flow, Mobility Management Entity is processed load decision-making and control unit transmission user profile and business information to onboard switch;
Or
In called subscriber's call flow, gateway station strengthens node and processes load decision-making and control unit transmission user profile and business information to onboard switch.
8. the session management device based on New Generation of Satellite Communication System, is characterized in that, comprising:
User profile and business information receiving element, for receiving user profile and business information;
Load processing mode identifying unit on Satellite, for judging the processing mode of load on Satellite;
Load processing mode command information transmitting element on Satellite, for sending load processing mode command information on Satellite.
9. device according to claim 8, is characterized in that, described satellite load processing mode identifying unit, comprises;
Load processing mode the first identifying unit on Satellite;
With
Load processing mode the second identifying unit on Satellite.
10. device according to claim 9, is characterized in that, load processing mode the first identifying unit on described Satellite, comprising:
If calling subscriber and called subscriber belong to satellite mobile communication network users together, judge on Satellite that load processing mode is as exchanging on star;
If calling subscriber and called subscriber belong to different communication network users, judge that on Satellite, load processing mode is transparent forwarding.
11. according to the device described in claim 9 and 10, it is characterized in that, load processing mode the second identifying unit on described Satellite, comprising:
If load processing mode the first identifying unit judges on Satellite that load processing mode is as exchanging on star on Satellite, and business information is designated as calling subscriber's request is data service, and on Satellite, load processing mode is IP exchange on star;
If load processing mode is as exchanging on star on the Satellite that on Satellite, load processing mode the first identifying unit is judged, and business information is designated as calling subscriber request is speech business, and on Satellite, load processing mode is subcarrier exchange on star.
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