CN103260144A - Method and system for communication among different network terminals - Google Patents
Method and system for communication among different network terminals Download PDFInfo
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- CN103260144A CN103260144A CN2012100340771A CN201210034077A CN103260144A CN 103260144 A CN103260144 A CN 103260144A CN 2012100340771 A CN2012100340771 A CN 2012100340771A CN 201210034077 A CN201210034077 A CN 201210034077A CN 103260144 A CN103260144 A CN 103260144A
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Abstract
The invention discloses a method for communication among different network terminals, and the method is applied to mutual communication of distributed serving networks and soft switching networks. The method comprises the following steps that A, call setup request messages started by calling terminals towards called terminals in other networks are obtained; B, registering routing information of home networks or roaming visited networks, registered in the distributed servicing networks, of the called terminals is obtained according to code numbers of the called terminals; C, protocol adaptation and conversion are carried out on the call setup request messages, and called service is carried out according to the registering routing information of the home networks or the roaming visited networks where the calling terminals are located. The method can resolve the problem that mutual communication cannot be conducted between the distributed servicing networks and the soft switching networks in the prior art. In addition, the invention further discloses a system, a mobile service switching center, a service node and a user information intercommunication device for communication among the different network terminals.
Description
Technical field
The present invention relates to method for communicating between a kind of terminal of heterogeneous networks, relate in particular to the method and system that communicates between a kind of Distributed Services network terminal and the flexible exchanging network terminal, belong to communication network technology.
Background technology
The full name of DSN is Distributed Service Network (Distributed Services network), be one towards mobile Internet business, have carrier class operation ability, the core network between business and bearer network.DSN a new generation that to be China Mobile propose at telecommunication service and mobile Internet business can run, manageable distributed kernel dictyosome system and function structure, be mainly used in tackling some challenges that present telecommunications network and Internet face in professional and operation, draw that telecommunications network can be runed, manageable characteristic and Internet on business provides fast, flexibly, low-cost, extendible characteristic.
Wherein, what DSN adopted is distributed (P2P) technology of internet arena, its framework as shown in Figure 1: as shown in Figure 1, DSN adopts distributed framework, and one of distributed important advantage is exactly good self-organizing, from disaster tolerance and dynamic load leveling ability.The distributed node of DSN has absorbed the strong point of P2P technology and cloud computing, forms the switch of a vast capacity that distributes in logic.Can be based on generic server on disposing, every station server can be disposed one or more crosspoint (SN), adopts other DHT of carrier-class to organize between the node and cooperates, and realizes distributed storage, backup and dynamic load leveling.The major function of the core switching node (SN) in the DSN network is distributed index, routing addressing, session control, professional triggering and data storage etc.
DSN is in same one deck of telecommunications network with R4 soft switch and IMS aspect telecommunications core network, by introducing the brand-new core net framework of P2P Technology design; Aspect the Internet, DSN extracts public distributed network ability, for Internet service provides service from P2P VoIP and the incision of P2P Streaming Media.DSN introduces P2P technology (as DHT) and transforms core net, and core net node (SN) is organized in the mode of P2P, constitutes P2P Overlay, allows each node all to participate in tissue, addressing and the maintenance of overlay.
DSN is as the carrier class core net after IMS, taking another step to the Internet direction aspect the professional providing capability, this step is mainly reflected on the professional ability framework of distribution, overlay supports lightweight VoIP business by distributed conversation control, and the concept of proposition " content exchange net ", content delivery network is used for the user provides various content class services, comprise live, program request, file download etc., except wanting polytype terminals such as adaptive PC and mobile phone, also need provide fixing mobile support of merging.From the angle of operator, distribution can be saved Internet resources, balanced flow.
Wherein, the R4 soft switch of prior art (Soft Switching) is based on the network of grouping, and as shown in Figure 2, it is that control and carrying are separated, and is that next generation network is called out and the core of controlling.The basic meaning of soft switch is separated CCF exactly from media gateway (transport layer), realize basic call control function by software, thereby realizes call transfer and call out separating of control.
The basic meaning of soft switch is separated CCF exactly from media gateway (transport layer), realize basic call control function by software, comprise call routing, management control, connect and control (setting up/remove session) and signalling interworking, thereby realize call transfer and call out separating of control, set up the plane of separating for control, exchange and software programmable function.Soft switch mainly provides and connects control, translation and functions such as routing, gateway management, calling control, Bandwidth Management, signaling, fail safe and call detail record.Meanwhile, soft switch also is encapsulated Internet resources, network capabilities, and the business interface by standard open links to each other with service application layer, thereby new business can be provided on network easily fast.
The key-course architecture of soft switch is as shown in Figure 2:
By shown in Figure 2, the R4 soft-exchange construction mainly is made up of mobile services switching centre (MSC), VLR Visitor Location Register (VLR), attaching position register (HLR), media gateway and control appliance (MGCF+MGW) thereof.
Wherein MSC is server, finishes the most basic function of exchange, and MSC provides a series of services such as bearer service, basic service and supplementary service for the user, and as server, MSC is mobility functions such as supporting location registration and automatic roaming also.VLR is all users for information about whole that storage enters its area of coverage, and the necessary condition of setting up call proceeding is provided for registered mobile subscriber.VLR always closes with MSC on physical entity and establishes, and can avoid like this because the time delay that continues that frequent contact is brought between MSC and the VLR as far as possible.
HLR is the central database of system, deposits user-dependent all information, comprises user's roaming authority, basic service, supplementary service and current location information etc., thereby calls out required related datas such as routing iinformation for MSC provides to set up.MGCF and MGW carry out the adaptive of associated call control protocol and conversion as the functional entity that interconnects between flexible exchanging network and other networks.
The R4 soft switch is as the core net of present communication network, for existing 2G/3G user provides service.
Wherein, the DSN network is as the evolution direction of existing R4 soft switch telecommunications core network, replacement to the R4 flexible exchanging network can not be accomplished in one move, so DSN and R4 flexible exchanging network can exist as telecommunications core network in a period of time simultaneously, but the user of existing DSN network and the user who is positioned at the R4 flexible exchanging network can not realize intercommunication and across-network roaming, thus, the user who has had a strong impact between the terminal of each network experiences.
Summary of the invention
The present invention is directed to the shortcoming that distributed interactive network and the soft Internet can't interconnect in the prior art, a kind of communication means is provided, this method can realize the purpose of the letter that interconnects of terminal under each network environment.
Wherein, the invention provides method for communicating between a kind of terminal of heterogeneous networks, comprising:
A, obtain the call setup request message that calling terminal is initiated to the terminal called of other networks;
B, number obtain the registration routing iinformation of the visited network of home network that terminal called registers or roaming according to the sign indicating number of terminal called in the Distributed Services network;
C, described call setup request message is carried out protocol adaptation and conversion;
Registration routing iinformation according to the visited network of the home network at the current place of described terminal called or roaming carries out called service.
Wherein, preferably, described calling terminal is the terminal that belongs to the Distributed Services network; Described terminal called is the terminal that belongs to flexible exchanging network, before the step B, also comprises:
The visit flexible exchanging network of the ownership at terminal called place or place roaming reports the user profile of terminal called place network to ownership Distributed Services network;
The routing iinformation of the visited network of the described user profile of Distributed Services Network records and corresponding home network or roaming.
Wherein, preferably, among the step B, specifically comprise:
The home service node of calling terminal is inquired about in the Distributed Services network;
Number whether register the registration routing iinformation of the visited network of the home network that obtains the current place of terminal called or roaming at the Distributed Services network according to the sign indicating number of terminal called.
Wherein, preferably, described calling terminal is the flexible exchanging network terminal, and described terminal called is the distributed network terminal, before the step B, also comprises:
Terminal called roams to flexible exchanging network and is provided services on the Internet by flexible exchanging network, wherein, obtains active user's positional information of terminal called in the described visited network;
Described visited network is to the current user profile of Distributed Services network reporting terminal, the registration routing iinformation of the place visited network of Distributed Services Network records terminal called.
Wherein, preferably, among the step B, specifically comprise:
The home service node of calling terminal number is inquired about in the Distributed Services network according to the sign indicating number of terminal called;
Obtain the registration routing iinformation that the visit flexible exchanging network of the ownership of terminal called or current place roaming is registered in the Distributed Services network.
Wherein, preferably, among the step C, further comprise:
Described setup requests is sent to the home service node of terminal called according to the registration routing iinformation of the home network of terminal called;
Described home service node is forwarded to the visit flexible exchanging network that the current place of terminal called is roamed according to the registration routing iinformation of user's roaming with described setup requests, provides called service by described visit flexible exchanging network.
The present invention has taked after the technique scheme, can solve under the network coexisted situation of existing flexible exchanging network and Distributed Services, 2G/3G terminal under Distributed Services network and the flexible exchanging network can't be carried out the technical disadvantages of intercommunication and across-network roaming, and, in this application, the Distributed Services network terminal can roam to flexible exchanging network, and provide service by the visit ground flexible exchanging network after the roaming, the 2G/3G terminal roaming of flexible exchanging network remains by flexible exchanging network behind the Distributed Services network service is provided, and then existing distributed service network and flexible exchanging network are transformed less, thereby have the technique effect that well interconnects.
In addition, the invention also discloses a kind of flexible exchanging network mobile switching centre, comprising:
Receiving element is used for obtaining the call setup request message of initiating to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to the Distributed Services network according to the sign indicating number of terminal called;
Query unit is used for connecting with the Distributed Services network, obtains the home network of described terminal called in described Distributed Services network or the registration routing iinformation of the visited network of current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
Wherein, preferably, described query unit specifically comprises:
The inquiry subelement is used for number initiating query requests to the user profile interworking unit of Distributed Services network according to the sign indicating number of terminal called;
Receive subelement, be used for receiving the registration routing iinformation of the visited network of the home network of the terminal called that is got access at described Distributed Services network by the user profile interworking unit or current roaming.
In addition, the invention also discloses the service node in a kind of Distributed Services network, comprising:
Receiving element is used for obtaining the call setup request message that calling terminal is initiated to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to flexible exchanging network according to the sign indicating number of terminal called;
Query unit is used for according to the sign indicating number of terminal called number to the Distributed Services network inquiry, and obtains the registration routing iinformation of the visited network of home network that terminal called registers in described Distributed Services network or current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
In addition, the invention also discloses a kind of user profile interworking unit, comprising:
Receiving element is used for receiving the registration route information query request at the Distributed Services network terminal that flexible exchanging network mobile switching centre initiates;
Access unit is used for being linked into the Distributed Services network, and obtains the registration routing iinformation of the home service node of the terminal called that the Distributed Services network terminal returns;
Transmitting element is used for the registration routing iinformation of the home service node of terminal called is notified to flexible exchanging network mobile switching centre.
Wherein, preferably, also comprise:
Described receiving element also is used for receiving the customer position information in the network of coming synchronously among the HLR of flexible exchanging network;
Described access unit also is used for being linked into the Distributed Services network, and described customer position information and described network routing iinformation is passed to the Distributed Services network.
Wherein, the present invention has taked after the such scheme, realized that by described user profile interworking unit the intercommunication of the terminal positional information in Distributed Services network and the flexible exchanging network is with synchronously, wherein, when distributed network terminal roaming during to flexible exchanging network, it can in time get access to the data of user's roaming, and then has realized the called service of roaming of flexible exchanging network terminal.
In addition, the invention also discloses a kind of MGCF network element, comprising:
Receiving element is used for obtaining the call setup request message of registration routing iinformation of the visited network of the home network that comprises terminal called or current roaming;
Conversion unit of protocol is used for call setup request message is carried out protocol adaptation and conversion;
Routing unit is used for routing the call to the home network of terminal called or the visited network of current roaming based on above-mentioned registration routing iinformation.
In addition, the invention also discloses the system that communicates by letter between a kind of terminal of heterogeneous networks, comprise Distributed Services network and flexible exchanging network, wherein, described Distributed Services network comprises user profile interworking unit and service node described above;
Described flexible exchanging network comprises that flexible exchanging network described above moves switching control center and MGCF network element.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in detail, so that above-mentioned advantage of the present invention is clearer and more definite.
Fig. 1 is the system architecture schematic diagram of Distributed Services network of the prior art;
Fig. 2 is the structural representation of flexible exchanging network of the prior art;
Fig. 3 is the schematic flow sheet of method for communicating between the terminal of heterogeneous networks of the present invention;
Fig. 4 is the calling procedure schematic diagram of the flexible exchanging network terminal of one embodiment of the invention;
Fig. 5 is the called flow schematic diagram of the Distributed Services network terminal of one embodiment of the invention;
Fig. 6 is the called flow schematic diagram that roams into the Distributed Services network terminal in the flexible exchanging network of one embodiment of the invention;
Fig. 7 is the registration schematic diagram of the distributed network terminal of one embodiment of the invention;
Fig. 8 is the registration schematic diagram of the distributed network terminal after the roaming of one embodiment of the invention;
Fig. 9 is the registration schematic diagram of the flexible exchanging network terminal of one embodiment of the invention;
Figure 10 is the schematic diagram of the system that communicates by letter between the terminal of heterogeneous networks of the present invention;
Figure 11 is the structural representation of the flexible exchanging network mobile switching centre in the system of the present invention;
Figure 12 is the structural representation of the service node of the Distributed Services network in the system of the present invention;
Figure 13 is the structural representation of the user profile interworking unit in the system of the present invention;
Figure 14 is the structural representation of the MGCF network element in the flexible exchanging network in the system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in detail.Wherein,
System embodiment one:
Figure 10 is the schematic diagram of the system that communicates by letter between the terminal of heterogeneous networks of the present invention;
Wherein, according to shown in Figure 10, in the present embodiment, described communication system comprises: flexible exchanging network and Distributed Services network.
Wherein, described Distributed Services network comprises: m-AGCF, service node SN and user profile interworking unit HLR-Client; Described service node forms Distributed Services network core net, the described network terminal is linked into home service node corresponding in the Distributed Services network by the m-AGCF network element, wherein, described m-AGCF mainly finishes is that L3 application layer instruction (MM/CC/SS/SMS/USSD) and A/Iu mouth radio management signaling are to mapping and the conversion of SIP, and, m-AGCF can read distributed DHT node route list, sensing network is dynamically adjusted, it is known that the above-mentioned functions of this network element belongs to prior art, is not elaborated at this.
Wherein, described user profile interworking unit HLR can get access to the user data that the HLR in the flexible exchanging network transmits, and the moving exchanging center MSC in itself and the Distributed Services network in service node and the flexible exchanging network can communicate.
Wherein, for the Distributed Services network, described user profile interworking unit HLR-Client is similar to an access terminal of described Distributed Services network; For flexible exchanging network, described mobile switching centre can by this user profile interworking unit to the Distributed Services network inquire about with route Distributed Services network in the node of user data in the flexible exchanging network, thus, realized user profile intercommunication between Distributed Services network and the flexible exchanging network.
Wherein, described flexible exchanging network, comprise HLR, GMSC, MSC+VLR network element, wherein, the network terminal carries out call service by MSC, and, described flexible exchanging network also comprises (the Media Gateway Cont rol Function be used to the MGCF network element MGCF that carries out network interworking, MGCF), is used for realizing interconnecting with other networks, carries out the adaptive of associated call control protocol and conversion simultaneously.
Below in conjunction with accompanying drawing said network element is elaborated, wherein, Figure 11 is the structural representation of the flexible exchanging network mobile switching centre in the system of the present invention;
As shown in figure 11, described flexible exchanging network mobile switching centre comprises:
Receiving element is used for obtaining the call setup request message of initiating to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to the Distributed Services network according to the sign indicating number of terminal called;
Query unit is used for connecting with the Distributed Services network, obtains the home network of described terminal called in described Distributed Services network or the registration routing iinformation of the visited network of current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
Wherein, preferably, described query unit specifically comprises:
The inquiry subelement is used for number initiating query requests to the user profile interworking unit of Distributed Services network according to the sign indicating number of terminal called;
Receive subelement, be used for receiving the registration routing iinformation of the visited network of the home network of the terminal called that is got access at described Distributed Services network by the user profile interworking unit or current roaming.
Wherein, Figure 12 is the structural representation of the service node of the Distributed Services network in the system of the present invention; As shown in figure 12, the service node in the described Distributed Services network comprises:
Receiving element is used for obtaining the call setup request message that calling terminal is initiated to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to flexible exchanging network according to the sign indicating number of terminal called;
Query unit is used for according to the sign indicating number of terminal called number to the Distributed Services network inquiry, and obtains the registration routing iinformation of the visited network of home network that terminal called registers in described Distributed Services network or current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
Wherein, Figure 13 is the structural representation of the user profile interworking unit in the system of the present invention;
As shown in figure 13, described user profile interworking unit HLR-Client comprises:
Receiving element is used for receiving the registration route information query request at the Distributed Services network terminal that flexible exchanging network mobile switching centre initiates;
Access unit is used for being linked into the Distributed Services network, and obtains the registration routing iinformation of the home service node of the terminal called that the Distributed Services network terminal returns;
Transmitting element is used for the registration routing iinformation of the home service node of terminal called is notified to flexible exchanging network mobile switching centre.
Wherein, preferably, also comprise:
Described receiving element also is used for receiving the customer position information in the network of coming synchronously among the HLR of flexible exchanging network;
Described access unit also is used for being linked into the Distributed Services network, and described customer position information and described network routing iinformation is passed to the Distributed Services network.
Wherein, the present invention has taked after the such scheme, realized that by described user profile interworking unit the intercommunication of the terminal positional information in Distributed Services network and the flexible exchanging network is with synchronously, wherein, when distributed network terminal roaming during to flexible exchanging network, it can in time get access to the data of user's roaming, and then has realized the called service of roaming of flexible exchanging network terminal.
Wherein, Figure 14 is the structural representation of the MGCF network element in the flexible exchanging network in the system of the present invention;
As shown in figure 14, described MGCF network element MGCF comprises:
Receiving element is used for obtaining the call setup request message of registration routing iinformation of the visited network of the home network that comprises terminal called or current roaming;
Conversion unit of protocol is used for call setup request message is carried out protocol adaptation and conversion;
Routing unit is used for routing the call to the home network of terminal called or the visited network of current roaming based on above-mentioned registration routing iinformation.
Wherein, the present invention has taked after the technique scheme, can solve under the network coexisted situation of existing flexible exchanging network and Distributed Services, 2G/3G terminal under Distributed Services network and the flexible exchanging network can't be carried out the technical disadvantages of intercommunication and across-network roaming, and, in this application, the Distributed Services network terminal can roam to flexible exchanging network, and provide service by the visit ground flexible exchanging network after the roaming, the 2G/3G terminal roaming of flexible exchanging network remains by flexible exchanging network behind the Distributed Services network service is provided, and then existing distributed service network and flexible exchanging network are transformed less, thereby have the technique effect that well interconnects.
Method embodiment one:
Below in conjunction with the drawings and specific embodiments communication means of the present invention is described.
Wherein, Fig. 3 is the schematic flow sheet of the method that communicates between the different network terminals of the present invention; As shown in Figure 3, described method mainly comprises the following steps:
S101: obtain the call setup request message that calling terminal is initiated to the terminal called of other networks;
S102: the registration routing iinformation that number obtains the visited network of home network that terminal called registers or roaming according to the sign indicating number of terminal called in the Distributed Services network;
Wherein, before this step, also need the terminal of each network to the registration routing iinformation of the home network at one of them current place of network report network terminal; Perhaps, when the described network terminal is in roaming state, the registration routing iinformation of the current visited network of roaming of terminal called.
S103: described call setup request message is carried out protocol adaptation and conversion;
S104: the registration routing iinformation according to the visited network of the home network of described terminal called or current roaming carries out the follow-up called service of terminal called.
Wherein, in a preferred embodiment, described calling terminal is the Distributed Services network terminal; Described terminal called is the flexible exchanging network terminal, among the S102, specifically comprises:
The home service node of calling terminal is inquired about in the Distributed Services network;
Number whether register the registration routing iinformation of the visited network of the home network that obtains the current place of terminal called or roaming at the Distributed Services network according to the sign indicating number of terminal called.
And, before step S102, also comprise following step:
The visit flexible exchanging network of the ownership at terminal called place or place roaming reports the user profile of terminal called place network to ownership Distributed Services network;
The routing iinformation of the visited network of the described user profile of Distributed Services Network records and corresponding home network or roaming.
In another embodiment, described calling terminal is the flexible exchanging network terminal, and described terminal called is the distributed network terminal, among the step S102, specifically comprises:
The home service node of calling terminal number is inquired about in the Distributed Services network according to the sign indicating number of terminal called;
Obtain the registration routing iinformation that the visit flexible exchanging network of the ownership of terminal called or current place roaming is registered in the Distributed Services network.
And, before step S102, also comprise:
Terminal called roams to flexible exchanging network, and the HLR in visit territory gets access to terminal called at the customer position information in visit territory;
Terminal called roams to flexible exchanging network and is provided services on the Internet by flexible exchanging network, wherein, obtains active user's positional information of terminal called in the described visited network;
Described visited network is to the current user profile of Distributed Services network reporting terminal, the registration routing iinformation of the place visited network of Distributed Services Network records terminal called.
Wherein, among the step S103, described setup requests is sent to the home service node of terminal called according to the registration routing iinformation of the home network of terminal called;
Described home service node is forwarded to the visit flexible exchanging network that the current place of terminal called is roamed according to the registration routing iinformation of user's roaming with described setup requests, provides called service by described visit flexible exchanging network.
The present invention has taked after the such scheme, the present invention has taked after the technique scheme, can solve under the network coexisted situation of existing flexible exchanging network and Distributed Services, the 2G/3G terminal under Distributed Services network and the flexible exchanging network can't be carried out the technical disadvantages of intercommunication and across-network roaming.
Method embodiment two:
Below in conjunction with specific embodiment said method of the present invention is described in detail; Wherein, Fig. 4 is the calling procedure schematic diagram of the flexible exchanging network terminal of one embodiment of the invention;
Wherein, described calling terminal is the Distributed Services network terminal; Described terminal called is the flexible exchanging network terminal.
As shown in Figure 4, described method mainly comprises step:
Step 41: the 2G/3G terminal in the Distributed Services network makes a call to set up to m-AGCF and asks (SET-UP message);
Step 42:m-AGCF is converted into the INVITE of SIP with described call setup request message, sends INVITE to the DSN core net;
Step 43: described INVITE is routed to the home service node SN (Serving Node) that be responsible for this user by existing P 2P algorithm with it by distributed server network, gets access to this INVITE by described service node; Described service node number obtains terminal called according to the sign indicating number of terminal called and belongs to flexible exchanging network, further comprises:
Inquire about in the service node in the Distributed Services network;
Wherein, if described terminal called is registered, then extract the registration routing iinformation of its home domain network or visit territory network, and the INVITE that will comprise above-mentioned registration routing iinformation is forwarded to MGCF, otherwise returns failure;
Step 44: described MGCF carries out protocol conversion and adaptive, after INVITE is converted to call setup request message (SET-UP message), and extract above-mentioned registration routing iinformation, the gateway exchange GMSC that forwards it to flexible exchanging network carries out follow-up called calling, for example, in the present embodiment, the described follow-up called following key step that comprises:
Step 45: gateway exchange GMSC initiates query requests (MAP request) to the HLR in the flexible exchanging network, inquiry called subscriber's MSC routing iinformation;
Step 46:HLR is sent to the territory VLR at the called subscriber place of recording in the database with query requests (MAP request), and request VLR distributes the routing number information that arrives this territory MSC;
Step 47:VLR is sent to HLR (MAP ACK message) with the routing number of called subscriber MSC;
Step 48:HLR is back to gateway exchange GMSC (MAP ACK message) with the routing number of called subscriber MSC;
Step 49:GMSC is forwarded to called MS C with setup requests (SET-UP message);
Step 410: called subscriber's MSC is sent to terminal called with call setup request message (SET-UP message).Wherein, step 45～410th, the called flow that prior art is comparatively common does not advance to describe in detail at this.
Wherein, the present invention has taked after the technique scheme, can be by the routing iinformation of storage flexible exchanging network in the Distributed Services network, and then realized the technique effect that the terminal of Distributed Services network is called out to the terminal in the flexible exchanging network.
Method embodiment three:
Wherein, Fig. 5 is the called flow schematic diagram of the Distributed Services network terminal of one embodiment of the invention; In this embodiment, described calling terminal is the flexible exchanging network terminal; Described terminal called is the Distributed Services network terminal.
Wherein, described terminal called is roaming not, and described method comprises the following steps:
The 2G/3G terminal (calling terminal) of step 51. flexible exchanging network is to mobile services switching centre MSC (caller MSC) request of making a call (SET-UP message);
The sign indicating number of the described mobile services switching centre MSC of step 52. by detecting called 2G/3G terminal number determines that terminal called belongs to the Distributed Services network; Inquire about the routing iinformation (MAP request) of the network that obtains described terminal called to the Distributed Services network;
Wherein, in an embodiment, utilize a user profile interworking unit HLR-Client in the Distributed Services network to be linked in the Distributed Services network, and get access to the routing iinformation of the home service node of terminal called;
Step 53: the described Distributed Services network of result according to inquiry returns to the routing iinformation that mobile services switching centre gets access to the home service node, for example, in an embodiment, described HLR-Client returns an IMRN number to caller mobile services switching centre MSC;
Step 54: mobile services switching centre MSC is sent to MGCF by the call setup request message (SET-UP message) that this IMRN number will comprise the routing iinformation of home service node, carries out follow-up called service by MGCF, for example, comprises following step:
Step 55: described MGCF is converted to the INVITE of SIP with call setup request message, and sends it to the Distributed Services network;
Step 56: described Distributed Services network INVITE is routed to the service node SN (Serving Node) that is responsible for this user by existing P 2P algorithm, and SN is forwarded to the m-AGCF that connects terminal called with INVITE after triggering relevant called service;
Step 57: described m-AGCF is sent to terminal called after INVITE is converted to setup requests (SET-UP request).Wherein, step 55～57th, the called flow of the comparatively common Distributed Services network terminal of the prior art does not describe in detail at this.
By such scheme, solved the problem that the Distributed Services network terminal is set up as the session of terminal called, have good technical effect.
In a further embodiment, the described Distributed Services network terminal is in roaming state, and at this moment, the described Distributed Services network terminal is provided services on the Internet by the soft switch service network.
Wherein, Fig. 6 is the called flow schematic diagram that roams into the Distributed Services network terminal in the flexible exchanging network of one embodiment of the invention;
As shown in Figure 6, the flow process of described calling is as following description:
Step 61: the 2G/3G terminal of flexible exchanging network is to the MSC request of making a call (SET-UP message);
Step 62: the sign indicating number of caller MSC by detecting the 2G/3G terminal number, determine that terminal called belongs to the DSN network, initiate query requests (MAP request) to HLR-Client, obtain called SN information;
Step 63: described HLR-Client returns the IMRN number to caller MSC;
Step 64:MSC is sent to MGCF by this IMRN number with call setup request message (SET-UP message);
Step 65:MGCF is converted to the INVITE of SIP with call setup request message, and sends it to the Distributed Services network;
Step 66:INVITE message is routed to the SN (Serving Node) that is responsible for this user by existing P 2P algorithm, and these all are that above-mentioned steps comprises, and are inequality with above-described embodiment, among this step, also comprise the steps:
After described service node SN triggers relevant called service, travel through in all Distributed Services networks service node or from self canned data, get access to this terminal called and be arranged in flexible exchanging network at this moment, and get access to the routing iinformation of the flexible exchanging network of residing roaming terminal called this moment, the INVITE of routing iinformation that will comprise the flexible exchanging network of described roaming passes to MGCF, and carries out follow-up called service by MCF.Specifically comprise:
Step 67:MSCF is converted into setup requests with INVITE, and according to routing iinformation message is forwarded to the called subscriber and visits territory VMSC;
Step 68: visit territory VMSC is sent to terminal called with setup requests.
Wherein, the present invention is on the basis of above-described embodiment, further solve terminal called and roamed to communication issue in the flexible exchanging network, and, the present invention has taked after the technique scheme, can solve under the network coexisted situation of existing flexible exchanging network and Distributed Services, the 2G/3G terminal under Distributed Services network and the flexible exchanging network can't be carried out the technical disadvantages of intercommunication and across-network roaming.
Method embodiment four:
Wherein, user profile and the network routing iinformation of storage diverse network terminal that need be in the Distributed Services network in above-described embodiment, for this reason, below the register flow path of the application's diverse network terminal is elaborated, wherein, Fig. 7 is the registration schematic diagram of the distributed network terminal of one embodiment of the invention; Fig. 8 is the registration schematic diagram of the distributed network terminal after the roaming of one embodiment of the invention; Fig. 9 is the registration schematic diagram of the flexible exchanging network terminal of one embodiment of the invention.
Wherein, according to shown in Figure 7, the flow process of a distributed network endpoint registration is as follows:
Step 71: the 2G/3G terminal of Distributed Services network is initiated location update request message to m-AGCF;
Step 72:m-AGCF is the REGISTER message of SIP with LOCATION UPDATE message conversion, sends REGISTER message to the DSN core net;
Step 73:REGISTER message is routed to the home service node SN (Serving Node) that is responsible for this user by existing P 2P algorithm, initiates third-party registration to application server (AS) behind the SN identifying user identity;
Step 74: application server returns 200OK message;
Step 75: home service node SN returns 200OK message to m-AGCF and represents position renewal (registration) success;
Step 76.m-AGCF becomes the position to upgrade successful information and sending to terminal called the 200OK message conversion of SIP, and by said method, described Distributed Services network gets access to the routing iinformation of user profile He its home network node of the network terminal.
Wherein, Fig. 8 is the registration schematic diagram of the distributed network terminal after the roaming of one embodiment of the invention, and according to shown in Figure 8, the registration of a distributed network terminal that roams into flexible exchanging network is as follows:
The 2G/3G terminal roaming of step 81. Distributed Services network is in flexible exchanging network, and territory VMSC initiates position updating request to visit;
Step 82: the sign indicating number of visit territory VMSC by detecting the 2G/3G terminal number, determine that terminal belongs to the DSN network after, and initiate position updating request to HLR-Client;
Step 83: described HLR-Client is converted to the REGISTER message of SIP with user's update request, and sends it to the DSN core net;
Step 84.REGISTER message is routed to the ownership SN (Serving Node) that is responsible for this user by the P2P algorithm, the information in the visit territory of the flexible exchanging network of the roaming at home service node SN recording user place, and to HLR-Client answer acknowledge message;
Step 85.HLR-Client is that the position is upgraded and successfully confirmed and send to VMSC with the 200OK message conversion of SIP;
Step 86.VMSC upgrades terminal after success message sends to roaming with the position.
By said method, the Distributed Services network gets access to the routing iinformation of the node of the flexible exchanging network after the user profile of the network terminal after the roaming and its roaming.
Wherein, Fig. 9 is the registration schematic diagram of the flexible exchanging network terminal of one embodiment of the invention.At this, be described as follows with a register flow path that roams into the 2G/3G terminal of other flexible exchanging networks, specifically, comprise the following steps:
Step 91: the visit territory VMSC of the flexible exchanging network of flexible exchanging network 2G/3G terminal after the current roaming of providing services on the Internet initiates position updating request;
Step 92: the sign indicating number of visit territory VMSC by detecting the 2G/3G terminal number, initiate position updating request to HLR;
Step 93: visit territory HLR upgrades the position and successfully confirms and send to VMSC;
Step 94:VMSC upgrades flexible exchanging network terminal after success message sends to roaming with the position;
Step 95:HLR is to the HLR-client synchrodata;
Step 96: described HLR-Client detects the user and carries out the position renewal, for the user produces the REGISTER message of SIP, and sends it to the DSN core net;
Step 97.REGISTER message is routed to SN (Serving Node) node in the DSN network by the P2P algorithm, information by visit territory, the service node SN recording user place in the DSN core net, and to HLR-Client answer acknowledge message (for example, 200OK).
Pass through said method, realized the customer position information of all network terminals and the routing iinformation of current place network are all put in the Distributed Services network, because the Distributed Services network has good disaster tolerance, thus, this kind method not only can provide the terminal of Distributed Services network and the terminal of flexible exchanging network to communicate, and has the technique effect of extraordinary communication stability.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: read-only memory (Read Only Memory, abbreviation ROM), various media that can be program code stored such as random access memory (Random Acess Memory is called for short RAM), magnetic disc, terminal phone software or CD.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. method for communicating between the terminal of a heterogeneous networks is applied to the intercommunication of the terminal under Distributed Services network and the soft Internet, comprising:
A, obtain the call setup request message that calling terminal is initiated to the terminal called of other networks;
B, number obtain the registration routing iinformation of the visited network of home network that terminal called registers or roaming according to the sign indicating number of terminal called in the Distributed Services network;
C, described call setup request message is carried out protocol adaptation and conversion;
Registration routing iinformation according to the visited network of the home network at the current place of described terminal called or roaming carries out called service.
2. method for communicating between the terminal of heterogeneous networks according to claim 1 is characterized in that, described calling terminal is the terminal that belongs to the Distributed Services network; Described terminal called is the terminal that belongs to flexible exchanging network, before the step B, also comprises:
The visit flexible exchanging network of the ownership at terminal called place or place roaming reports the user profile of terminal called place network to ownership Distributed Services network;
The routing iinformation of the visited network of the described user profile of Distributed Services Network records and corresponding home network or roaming.
3. method for communicating between the terminal of heterogeneous networks according to claim 2 is characterized in that, among the step B, specifically comprises:
The home service node of calling terminal is inquired about in the Distributed Services network;
Number whether register the registration routing iinformation of the visited network of the home network that obtains the current place of terminal called or roaming at the Distributed Services network according to the sign indicating number of terminal called.
4. method for communicating between the terminal of heterogeneous networks according to claim 1 is characterized in that, described calling terminal is the flexible exchanging network terminal, and described terminal called is the distributed network terminal, before the step B, also comprises:
Terminal called roams to flexible exchanging network and is provided services on the Internet by flexible exchanging network, wherein, obtains active user's positional information of terminal called in the described visited network;
Described visited network is to the current user profile of Distributed Services network reporting terminal, the registration routing iinformation of the place visited network of Distributed Services Network records terminal called.
5. method for communicating between the terminal of heterogeneous networks according to claim 4 is characterized in that, among the step B, specifically comprises:
The home service node of calling terminal number is inquired about in the Distributed Services network according to the sign indicating number of terminal called;
Obtain the registration routing iinformation that the visit flexible exchanging network of the ownership of terminal called or current place roaming is registered in the Distributed Services network.
6. method for communicating between the terminal of heterogeneous networks according to claim 5 is characterized in that, among the step C, further comprises:
Described setup requests is sent to the home service node of terminal called according to the registration routing iinformation of the home network of terminal called;
Described home service node is forwarded to the visit flexible exchanging network that the current place of terminal called is roamed according to the registration routing iinformation of user's roaming with described setup requests, provides called service by described visit flexible exchanging network.
7. flexible exchanging network mobile switching centre comprises:
Receiving element is used for obtaining the call setup request message of initiating to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to the Distributed Services network according to the sign indicating number of terminal called;
Query unit is used for connecting with the Distributed Services network, obtains the home network of described terminal called in described Distributed Services network or the registration routing iinformation of the visited network of current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
8. flexible exchanging network according to claim 7 mobile switching centre is characterized in that described query unit specifically comprises:
The inquiry subelement is used for number initiating query requests to the user profile interworking unit of Distributed Services network according to the sign indicating number of terminal called;
Receive subelement, be used for receiving the registration routing iinformation of the visited network of the home network of the terminal called that is got access at described Distributed Services network by the user profile interworking unit or current roaming.
9. the service node in the Distributed Services network comprises:
Receiving element is used for obtaining the call setup request message that calling terminal is initiated to terminal called;
Judging unit is used for number getting access to the terminal that terminal called belongs to flexible exchanging network according to the sign indicating number of terminal called;
Query unit is used for according to the sign indicating number of terminal called number to the Distributed Services network inquiry, and obtains the registration routing iinformation of the visited network of home network that terminal called registers in described Distributed Services network or current roaming;
Transmitting element sends to the MGCF network element for the setup requests that will comprise described registration routing iinformation, carries out subsequent voice calls by the MGCF network element.
10. user profile interworking unit comprises:
Receiving element is used for receiving the registration route information query request at the Distributed Services network terminal that flexible exchanging network mobile switching centre initiates;
Access unit is used for being linked into the Distributed Services network, and obtains the registration routing iinformation of the home service node of the terminal called that the Distributed Services network terminal returns;
Transmitting element is used for the registration routing iinformation of the home service node of terminal called is notified to flexible exchanging network mobile switching centre.
11. user profile interworking unit according to claim 10 is characterized in that, also comprises:
Described receiving element also is used for receiving the customer position information in the network of coming synchronously among the HLR of flexible exchanging network;
Described access unit also is used for being linked into the Distributed Services network, and described customer position information and described network routing iinformation is passed to the Distributed Services network.
12. a MGCF network element comprises:
Receiving element is used for obtaining the call setup request message of registration routing iinformation of the visited network of the home network that comprises terminal called or current roaming;
Conversion unit of protocol is used for call setup request message is carried out protocol adaptation and conversion;
Routing unit is used for routing the call to the home network of terminal called or the visited network of current roaming based on above-mentioned registration routing iinformation.
13. the system that communicates by letter between the terminal of a heterogeneous networks comprises Distributed Services network and flexible exchanging network, it is characterized in that,
Described Distributed Services network comprises the arbitrary described user profile interworking unit of claim 10～11 and the described service node of claim 9;
Described flexible exchanging network comprises that the arbitrary described flexible exchanging network of claim 7～8 moves switching control center and the described MGCF network element of claim 12.
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