CN103260144B - The method, apparatus and system of communicating by letter between a kind of terminal of heterogeneous networks - Google Patents
The method, apparatus and system of communicating by letter between a kind of terminal of heterogeneous networks Download PDFInfo
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Abstract
The invention discloses a kind of method of communicating by letter between terminal of heterogeneous networks, be 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 in Distributed Services network or roaming according to the code of terminal called; C, described call setup request message is carried out to protocol adaptation and conversion; Carry out called service according to the registration routing iinformation of the visited network of the home network at the current place of described terminal called or roaming. Wherein, the application can solve in prior art and cannot carry out intercommunication problem between Distributed Services network and flexible exchanging network. In addition, the invention also discloses system, mobile services switching centre, service node and the user profile interworking unit of between a kind of terminal of heterogeneous networks, communicating by letter.
Description
Technical field
The present invention relates to a kind of method of communicating by letter between terminal of heterogeneous networks, relate in particular to the method and system communicating between a kind of Distributed Services network terminal and flexible exchanging network terminal, belong to communication network technology.
Background technology
The full name of DSN is DistributedServiceNetwork (Distributed Services network), be one towards mobile Internet business, there is carrier class operation ability, the core network between business and bearer network. DSN a new generation that to be China Mobile propose for telecommunication service and mobile Internet business can run, manageable distributed kernel net system and function structure, be mainly used in tackling some challenges that current telecommunications network and Internet face in business 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 is as shown in Figure 1: as shown in Figure 1, DSN adopts distributed framework, and one of distributed significant 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 distributing 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 organize and cooperate between node, realizes distributed storage, backup and dynamic load leveling. The major function of the core switch node (SN) in DSN network is distributed index, routing addressing, session control, business triggering and data storage etc.
DSN aspect telecommunications core network with R4 soft switch and the same layer of IMS in telecommunications network, by introducing P2P Technology design brand-new core net framework; Aspect internet, DSN, from P2PVoIP and the incision of P2P Streaming Media, extracts public distributed network ability, for Internet service provides service. DSN introduces P2P technology (as DHT) transformation core net, and core net node (SN) is organized in the mode of P2P, forms P2POverlay, allows each node all to participate in tissue, addressing and the maintenance of overlay.
DSN is as the carrier class core net after IMS, in business providing capability side, Internet direction takes another step, this step is mainly reflected on the professional ability framework of distribution, support lightweight VoIP business by distributed conversation control overlay, and the concept of proposition " content exchange net ", content delivery network is applied for user provides various content class services, comprise live, program request, file download etc., except wanting the polytype terminals such as adaptive PC and mobile phone, also need to provide the support to fixing Mobile Convergence. From the angle of operator, distribution can be saved Internet resources, balanced flow.
Wherein, the R4 soft switch (SoftSwitching) of prior art is packet-based network, 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 WMG (transport layer), realizes basic call control function by software, thereby realizes call transfer and call out separating of controlling.
The basic meaning of soft switch is separated CCF exactly from WMG (transport layer), realize basic call control function by software, comprise that call routing, management are controlled, (setting up/remove session) and signalling interworking are controlled in connection, thereby realize call transfer and call out separating of controlling, for control, exchange and software programmable function are set up the plane separating. Soft switch mainly provides functions such as connecting control, translation and routing, gateway management, calling control, Bandwidth Management, signaling, security and call detail record. Meanwhile, soft switch is also encapsulated Internet resources, network capabilities, be connected with service application layer by the business interface of standard open, thereby can be easily on network Quick for new business.
The key-course architecture of soft switch is as shown in Figure 2:
As shown in Figure 2, R4 soft-exchange construction is mainly made up of mobile services switching centre (MSC), VLR Visitor Location Register (VLR), attaching position register (HLR), WMG and control appliance (MGCF+MGW) thereof.
Wherein MSC is server, completes the most basic function of exchange, and MSC provides a series of services such as bearer service, basic service and supplementary service for user, and as server, MSC is the 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, for registered mobile subscriber provides the necessary condition of setting up call proceeding. VLR always closes and establishes with MSC on physical entity, can avoid like this time delay that continues of bringing due to frequent contact between MSC and 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 sets up for MSC provides related datas such as calling out required routing iinformation. MGCF and MGW, as the functional entity interconnecting between flexible exchanging network and other networks, carry out the adaptive and conversion of associated call control protocol.
R4 soft switch is as the core net of present communication network, for existing 2G/3G user provides service.
Wherein, DSN network is as the evolution direction of existing R4 soft switch telecommunications core network, can not accomplish in one move to the replacement of R4 flexible exchanging network, so DSN and R4 flexible exchanging network can exist as telecommunications core network simultaneously within a period of time, but the user of existing DSN network and the user who is positioned at 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 in prior art, distributed interactive network and the soft Internet cannot interconnect, a kind of communication means is provided, the method can realize the object of the letter that interconnects of each net environment terminal.
Wherein, the invention provides a kind of method of communicating by letter between 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 in Distributed Services network or roaming according to the code of terminal called;
C, described call setup request message is carried out to protocol adaptation and conversion;
Carry out called service according to the registration routing iinformation of the visited network of the home network at the current place of described terminal called or roaming.
Wherein, preferably, described calling terminal is the terminal that belongs to Distributed Services network; Described terminal called is the terminal that belongs to flexible exchanging network, before 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 user profile and corresponding home network or roaming described in Distributed Services Network records.
Wherein, preferably, in step B, specifically comprise:
The home service node of calling terminal is inquired about in Distributed Services network;
Whether register at Distributed Services network the registration routing iinformation that obtains the home network at the current place of terminal called or the visited network of roaming according to the code number of terminal called.
Wherein, preferably, described calling terminal is flexible exchanging network terminal, and described terminal called is distributed network terminal, before 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 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, in step B, specifically comprise:
The home service node of calling terminal is inquired about in Distributed Services network according to the code number of terminal called;
Obtain the registration routing iinformation that the ownership of terminal called or the visit flexible exchanging network of current place roaming are registered in Distributed Services network.
Wherein, preferably, in 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 described setup requests according to the registration routing iinformation of user's roaming the visit flexible exchanging network of terminal called current place roaming, provides called service by described visit flexible exchanging network.
After the present invention has taked technique scheme, can solve in the network coexisted situation of existing flexible exchanging network and Distributed Services, 2G/3G terminal under Distributed Services network and flexible exchanging network cannot 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 visited place flexible exchanging network after roaming, the 2G/3G terminal roaming of flexible exchanging network provides service to remaining by flexible exchanging network after Distributed Services network, and then transform less to existing Distributed Services network and flexible exchanging network, thereby there is the technique effect well interconnecting.
In addition, the invention also discloses a kind of flexible exchanging network mobile switching centre, comprising:
Receiving element, for obtaining the call setup request message of initiating to terminal called;
Judging unit, gets for the code number according to terminal called the terminal that terminal called belongs to Distributed Services network;
Query unit, for connecting with Distributed Services network, obtains the registration routing iinformation of the visited network of the home network of described terminal called in described Distributed Services network or current roaming;
Transmitting element, for the setup requests that comprises described registration routing iinformation is sent to MGCF network element, carries out subsequent voice calls by MGCF network element.
Wherein, preferably, described query unit, specifically comprises:
Inquiry subelement, for initiating inquiry request according to the code of terminal called number to the user profile interworking unit of Distributed Services network;
Receive subelement, for receiving the home network of terminal called that got at described Distributed Services network by user profile interworking unit or the registration routing iinformation of the visited network of current roaming.
In addition, the invention also discloses the service node in a kind of Distributed Services network, comprising:
Receiving element, the call setup request message of initiating to terminal called for obtaining calling terminal;
Judging unit, gets for the code number according to terminal called the terminal that terminal called belongs to flexible exchanging network;
Query unit, for according to the code of terminal called number to Distributed Services network inquiry, and obtain 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, for the setup requests that comprises described registration routing iinformation is sent to MGCF network element, carries out subsequent voice calls by MGCF network element.
In addition, the invention also discloses a kind of user profile interworking unit, comprising:
Receiving element, the registration route information query request for the Distributed Services network terminal of initiating for receiving flexible exchanging network mobile switching centre;
Access unit, for being linked into Distributed Services network, and obtains the registration routing iinformation of home service node of the terminal called that the Distributed Services network terminal returns;
Transmitting element, for notifying the registration routing iinformation of the home service node of terminal called to flexible exchanging network mobile switching centre.
Wherein, preferably, also comprise:
Described receiving element, also for receiving the customer position information in the network of synchronously coming in the HLR of flexible exchanging network;
Described access unit, also for being linked into Distributed Services network, and passes to Distributed Services network by described customer position information and described network routing iinformation.
Wherein, after the present invention has taked such scheme, realized the intercommunication of the terminal positional information in Distributed Services network and flexible exchanging network by described user profile interworking unit with synchronous, wherein, when distributed network terminal roaming is during to flexible exchanging network, it can get the data of user's roaming in time, 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, for obtaining the call setup request message of registration routing iinformation of visited network of the home network that comprises terminal called or current roaming;
Conversion unit of protocol, for carrying out protocol adaptation and conversion to call setup request message;
Routing unit, 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 of communicating 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 flexible exchanging network mobile switch control centre described above and MGCF network element.
Other features and advantages of the present invention will be set forth in the following description, and, partly from description, become apparent, or understand by implementing the present invention. Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in write description, claims and accompanying drawing.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described in detail, to make above-mentioned advantage of the present invention 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 the method for communicating by letter 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 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 of communicating 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 system of the present invention;
Figure 12 is the structural representation of the service node of the Distributed Services network in system of the present invention;
Figure 13 is the structural representation of the user profile interworking unit in system of the present invention;
Figure 14 is the structural representation of the MGCF network element in the flexible exchanging network in system of the present invention.
Detailed description of the invention
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 of communicating by letter between the terminal of heterogeneous networks of the present invention;
Wherein, shown in Figure 10, in the present embodiment, described communication system, comprising: 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 Distributed Services network by m-AGCF network element, wherein, L3 application layer instruction (MM/CC/SS/SMS/USSD) that what described m-AGCF mainly completed is 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 the user data that the HLR in flexible exchanging network transmits, and the moving exchanging center MSC in itself and Distributed Services network in service node and flexible exchanging network can communicate.
Wherein, for 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 Distributed Services network inquire about and route Distributed Services network in user data to the node in flexible exchanging network, thus, realized the user profile intercommunication between Distributed Services network and 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 MGCF network element MGCF (MediaGatewayControlFunction for carrying out network interworking, MGCF), interconnect for realizing with other networks, carry out the adaptive and conversion of associated call control protocol 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 system of the present invention;
As shown in figure 11, described flexible exchanging network mobile switching centre, comprising:
Receiving element, for obtaining the call setup request message of initiating to terminal called;
Judging unit, gets for the code number according to terminal called the terminal that terminal called belongs to Distributed Services network;
Query unit, for connecting with Distributed Services network, obtains the registration routing iinformation of the visited network of the home network of described terminal called in described Distributed Services network or current roaming;
Transmitting element, for the setup requests that comprises described registration routing iinformation is sent to MGCF network element, carries out subsequent voice calls by MGCF network element.
Wherein, preferably, described query unit, specifically comprises:
Inquiry subelement, for initiating inquiry request according to the code of terminal called number to the user profile interworking unit of Distributed Services network;
Receive subelement, for receiving the home network of terminal called that got at described Distributed Services network by user profile interworking unit or the registration routing iinformation of the visited network of current roaming.
Wherein, Figure 12 is the structural representation of the service node of the Distributed Services network in system of the present invention; As shown in figure 12, the service node in described Distributed Services network, comprising:
Receiving element, the call setup request message of initiating to terminal called for obtaining calling terminal;
Judging unit, gets for the code number according to terminal called the terminal that terminal called belongs to flexible exchanging network;
Query unit, for according to the code of terminal called number to Distributed Services network inquiry, and obtain 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, for the setup requests that comprises described registration routing iinformation is sent to MGCF network element, carries out subsequent voice calls by MGCF network element.
Wherein, Figure 13 is the structural representation of the user profile interworking unit in system of the present invention;
As shown in figure 13, described user profile interworking unit HLR-Client, comprising:
Receiving element, the registration route information query request for the Distributed Services network terminal of initiating for receiving flexible exchanging network mobile switching centre;
Access unit, for being linked into Distributed Services network, and obtains the registration routing iinformation of home service node of the terminal called that the Distributed Services network terminal returns;
Transmitting element, for notifying the registration routing iinformation of the home service node of terminal called to flexible exchanging network mobile switching centre.
Wherein, preferably, also comprise:
Described receiving element, also for receiving the customer position information in the network of synchronously coming in the HLR of flexible exchanging network;
Described access unit, also for being linked into Distributed Services network, and passes to Distributed Services network by described customer position information and described network routing iinformation.
Wherein, after the present invention has taked such scheme, realized the intercommunication of the terminal positional information in Distributed Services network and flexible exchanging network by described user profile interworking unit with synchronous, wherein, when distributed network terminal roaming is during to flexible exchanging network, it can get the data of user's roaming in time, 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 system of the present invention;
As shown in figure 14, described MGCF network element MGCF, comprising:
Receiving element, for obtaining the call setup request message of registration routing iinformation of visited network of the home network that comprises terminal called or current roaming;
Conversion unit of protocol, for carrying out protocol adaptation and conversion to call setup request message;
Routing unit, 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, after the present invention has taked technique scheme, can solve in the network coexisted situation of existing flexible exchanging network and Distributed Services, 2G/3G terminal under Distributed Services network and flexible exchanging network cannot 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 visited place flexible exchanging network after roaming, the 2G/3G terminal roaming of flexible exchanging network provides service to remaining by flexible exchanging network after Distributed Services network, and then transform less to existing Distributed Services network and flexible exchanging network, thereby there is the technique effect well interconnecting.
Embodiment of the method 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 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 in Distributed Services network or roaming according to the code of terminal called;
Wherein, before this step, also need the terminal registration routing iinformation of the home network at a current place of network report network terminal wherein of each network; Or, when the described network terminal is during 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 to protocol adaptation and conversion;
S104: carry out the follow-up called service of terminal called according to the registration routing iinformation of the visited network of the home network of described terminal called or current roaming.
Wherein, in a preferred embodiment, described calling terminal is the Distributed Services network terminal; Described terminal called is flexible exchanging network terminal, in S102, specifically comprises:
The home service node of calling terminal is inquired about in Distributed Services network;
Whether register at Distributed Services network the registration routing iinformation that obtains the home network at the current place of terminal called or the visited network of roaming according to the code 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 user profile and corresponding home network or roaming described in Distributed Services Network records.
In another embodiment, described calling terminal is flexible exchanging network terminal, and described terminal called is distributed network terminal, in step S102, specifically comprises:
The home service node of calling terminal is inquired about in Distributed Services network according to the code number of terminal called;
Obtain the registration routing iinformation that the ownership of terminal called or the visit flexible exchanging network of current place roaming are registered in Distributed Services network.
And, before step S102, also comprise:
Terminal called roams to flexible exchanging network, and the HLR in visit territory gets the customer position information of terminal called 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 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, in 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 described setup requests according to the registration routing iinformation of user's roaming the visit flexible exchanging network of terminal called current place roaming, provides called service by described visit flexible exchanging network.
After the present invention has taked such scheme, after the present invention has taked technique scheme, can solve in the network coexisted situation of existing flexible exchanging network and Distributed Services, the 2G/3G terminal under Distributed Services network and flexible exchanging network cannot be carried out the technical disadvantages of intercommunication and across-network roaming.
Embodiment of the method 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 flexible exchanging network terminal.
As shown in Figure 4, described method mainly comprises step:
Step 41: the 2G/3G terminal in Distributed Services network makes a call to set up to m-AGCF and asks (SET-UP message);
Step 42:m-AGCF is converted into described call setup request message the INVITE of SIP, sends INVITE to DSN core net;
Step 43: described INVITE is routed to the home service node SN (ServingNode) that is responsible for this user by existing P2P algorithm by distributed server network, get this INVITE by described service node; Described service node obtains terminal called according to the code number of terminal called and belongs to flexible exchanging network, further comprises:
In service node in Distributed Services network, inquire about;
Wherein, if described terminal called is registered, extract the registration routing iinformation of its home domain network or visit territory network, and the INVITE that comprises above-mentioned registration routing iinformation is forwarded to MGCF, otherwise return to failure;
Step 44: described MGCF carries out protocol conversion and adaptation, INVITE is converted to after 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 inquiry request (MAP request) to the HLR in flexible exchanging network, inquiry called subscriber's MSC routing iinformation;
Step 46:HLR is sent to inquiry request (MAP request) the territory VLR at the called subscriber place of recording in database, and request VLR distributes the routing number information that arrives this territory MSC;
The routing number of called subscriber MSC is sent to HLR (MAPACK message) by step 47:VLR;
The routing number of called subscriber MSC is back to gateway exchange GMSC (MAPACK message) by step 48:HLR;
Setup requests (SET-UP message) is forwarded to called MS C by step 49:GMSC;
Step 410: call setup request message (SET-UP message) is sent to terminal called by called subscriber's MSC. Wherein, step 45～410th, the called flow that prior art is comparatively common, does not enter to describe in detail at this.
Wherein, after the present invention has taked technique scheme, can be by store the routing iinformation of flexible exchanging network in Distributed Services network, and then realized the technique effect that the terminal of Distributed Services network is called out to the terminal in flexible exchanging network.
Embodiment of the method 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 flexible exchanging network terminal; Described terminal called is the Distributed Services network terminal.
Wherein, described terminal called is not roamed, 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);
Described in step 52., mobile services switching centre MSC, by detecting the code number of called 2G/3G terminal, determines that terminal called belongs to Distributed Services network; Inquire about the routing iinformation (MAP request) of the network that obtains described terminal called to Distributed Services network;
Wherein, in an embodiment, utilize a user profile interworking unit HLR-Client in Distributed Services network to be linked in Distributed Services network, and get the routing iinformation of the home service node of terminal called;
Step 53: the routing iinformation that returns to mobile services switching centre and get home service node according to Distributed Services network described in the result of inquiry, for example, in an embodiment, described HLR-Client returns to an IMRN number to caller mobile services switching centre MSC;
Step 54: mobile services switching centre MSC is sent to MGCF by this IMRN number by the call setup request message of the routing iinformation that comprises home service node (SET-UP message), carry out follow-up called service by MGCF, for example, comprise following step:
Step 55: described MGCF is converted to call setup request message the INVITE of SIP, and send it to Distributed Services network;
Step 56: described Distributed Services network INVITE is routed to the service node SN (ServingNode) that is responsible for this user by existing P2P algorithm, SN is forwarded to by INVITE the m-AGCF that connects terminal called 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, solve the problem of the Distributed Services network terminal as the session establishment of terminal called, there is good technique effect.
In a further embodiment, the described Distributed Services network terminal is in roaming state, and now, the described Distributed Services network terminal is provided services on the Internet by soft switch service network.
Wherein, Fig. 6 is the called flow schematic diagram that roams into the Distributed Services network terminal in flexible exchanging network of one embodiment of the invention;
As shown in Figure 6, the flow process of described calling is as described below:
Step 61: the 2G/3G terminal of flexible exchanging network is to the MSC request of making a call (SET-UP message);
Step 62: caller MSC, by detecting the code number of 2G/3G terminal, determines that terminal called belongs to DSN network, initiates inquiry request (MAP request) to HLR-Client, obtains called SN information;
Step 63: described HLR-Client returns to IMRN number to caller MSC;
Step 64:MSC is sent to MGCF by this IMRN number by call setup request message (SET-UP message);
Step 65:MGCF is converted to call setup request message the INVITE of SIP, and sends it to Distributed Services network;
Step 66:INVITE message is routed to the SN (ServingNode) that is responsible for this user by existing P2P algorithm, these are all that above-mentioned steps comprises, not identical with above-described embodiment, among this step, also comprise the following steps:
Described service node SN triggers after relevant called service, travel through service node in all Distributed Services networks or from self canned data, get this terminal called and be now arranged in flexible exchanging network, and get the routing iinformation of the flexible exchanging network of now residing roaming of terminal called, the INVITE of the routing iinformation of the flexible exchanging network that comprises described roaming is passed to MGCF, and carry out follow-up called service by MCF. Specifically comprise:
INVITE is converted into setup requests by step 67:MSCF, and according to routing iinformation, message is forwarded to called subscriber and visits territory VMSC;
Step 68: setup requests is sent to terminal called by visit territory VMSC.
Wherein, the present invention is on the basis of above-described embodiment, further solve terminal called and roamed to the communication issue in flexible exchanging network, and, after the present invention has taked technique scheme, can solve in the network coexisted situation of existing flexible exchanging network and Distributed Services, the 2G/3G terminal under Distributed Services network and flexible exchanging network cannot be carried out the technical disadvantages of intercommunication and across-network roaming.
Embodiment of the method four:
Wherein, user profile and the network routing iinformation of storage diverse network terminal that need to be in Distributed Services network in above-described embodiment, for this reason, the register flow path of the diverse network terminal to the application is elaborated below, 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, shown in Fig. 7, the flow process of a distributed network endpoint registration is as follows:
Step 71: the 2G/3G terminal of Distributed Services network is to m-AGCF launch position update request message;
The REGISTER message that step 72:m-AGCF is SIP by LOCATIONUPDATE message conversion, sends REGISTER message to DSN core net;
Step 73:REGISTER message is routed to the home service node SN (ServingNode) that is responsible for this user by existing P2P algorithm, the backward application server of SN identifying user identity (AS) is initiated third-party registration;
Step 74: application server returns to 200OK message;
Step 75: home service node SN returns to 200OK message to m-AGCF and represents position renewal (registration) success;
Step 76.m-AGCF becomes position to be updated successfully information and sending to terminal called the 200OK message conversion of SIP, and by said method, described Distributed Services Network Capture is 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 shown in Fig. 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, to visit territory VMSC launch position update request;
Step 82: visit territory VMSC, by detecting the code number of 2G/3G terminal, determines that terminal belongs to after DSN network, and to HLR-Client launch position update request;
Step 83: described HLR-Client is converted to user's update request the REGISTER message of SIP, and sends it to DSN core net;
Step 84.REGISTER message is routed to the ownership SN (ServingNode) that is responsible for this user by 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 reply confirmation message to HLR-Client;
Step 85.HLR-Client is that position is updated successfully and confirms and send to VMSC by the 200OK message conversion of SIP;
Step 86.VMSC is updated successfully message by position and sends to the terminal after roaming.
By said method, Distributed Services Network Capture is to the routing iinformation of the node of the user profile of the network terminal after roaming and the flexible exchanging network after 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: flexible exchanging network 2G/3G terminal is to the visit territory VMSC launch position update request of the flexible exchanging network after current roaming of providing services on the Internet;
Step 92: visit territory VMSC is by detecting the code number of 2G/3G terminal, to HLR launch position update request;
Step 93: visit HLRJiang position, territory is updated successfully to be confirmed and sends to VMSC;
Step 94:VMSC is updated successfully message by position and sends to the flexible exchanging network terminal after roaming;
Step 95:HLR is to HLR-client synchrodata;
Step 96: described HLR-Client detects that user carries out position renewal, for user produces the REGISTER message of SIP, and sends it to DSN core net;
Step 97.REGISTER message is routed to SN (ServingNode) node in DSN network by P2P algorithm, by the information in the visit territory, service node SN recording user place in DSN core net, and reply confirmation message (for example, 200OK) to HLR-Client.
Pass through said method, realize the routing iinformation of the customer position information of all network terminals and current place network has all been put in Distributed Services network, because Distributed Services network has good disaster tolerance, thus, this kind of 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 complete by the relevant hardware of programmed instruction, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: read-only storage (ReadOnlyMemory, be called for short ROM), the various media that can be program code stored such as random access memory (RandomAcessMemory, be called for short RAM), magnetic disc, terminal phone software or CD.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement. Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a method of communicating by letter between the 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 according to the code of terminal called the home network that terminal called is registered in Distributed Services networkThe registration routing iinformation of the visited network of network or roaming;
C, described call setup request message is carried out to protocol adaptation and conversion;
According to the registration route of the visited network of the home network at the current place of described terminal called or roamingInformation is carried out called service;
In step B, specifically comprise:
The home service node of calling terminal is inquired about in Distributed Services network;
Number whether register at Distributed Services network according to the code of terminal called that to obtain terminal called currentThe registration routing iinformation of the home network at place or the visited network of roaming.
2. the method for communicating by letter between the terminal of heterogeneous networks according to claim 1, is characterized in that,Described calling terminal is the terminal that belongs to Distributed Services network; Described terminal called is to belong to soft friendshipThe terminal of switching network, before step B, also comprises:
The visit flexible exchanging network of the home network at terminal called place or place roaming is distributed to ownershipService network reports the user profile of terminal called place network;
The visit net of user profile and corresponding home network or roaming described in Distributed Services Network recordsThe routing iinformation of network.
3. the method for communicating by letter between the terminal of heterogeneous networks according to claim 1, is characterized in that,Described calling terminal is flexible exchanging network terminal, and described terminal called is distributed network terminal, step BBefore, also comprise:
Terminal called roams to flexible exchanging network and is provided services on the Internet by flexible exchanging network, wherein, described inIn visited network, obtain active user's positional information of terminal called;
Described visited network is to the current user profile of Distributed Services network reporting terminal, Distributed ServicesThe registration routing iinformation of the place visited network of Network records terminal called.
4. the method for communicating by letter between the terminal of heterogeneous networks according to claim 3, is characterized in that,In step B, specifically comprise:
The home service node of calling terminal carries out in Distributed Services network according to the code number of terminal calledInquiry;
Obtain the home network of terminal called or the visit flexible exchanging network of current place roaming distributedThe registration routing iinformation of registering in service network.
5. the method for communicating by letter between the terminal of heterogeneous networks according to claim 4, is characterized in that,In step C, further comprise:
Described setup requests according to the registration routing iinformation of the home network of terminal called be sent to byBe the home service node of terminal;
Described home service node according to the registration routing iinformation of user's roaming by described setup requestsBe forwarded to the visit flexible exchanging network of terminal called current place roaming, carried by described visit flexible exchanging networkFor called service.
6. a flexible exchanging network mobile switching centre, comprising:
Receiving element, for obtaining the call setup request message of initiating to terminal called;
Judging unit, belongs to Distributed Services net for getting terminal called according to the code number of terminal calledThe terminal of network;
Query unit, for connecting with Distributed Services network, obtains described terminal called describedThe registration routing iinformation of the home network in Distributed Services network or the visited network of current roaming;
Transmitting element, for sending to media net by the setup requests that comprises described registration routing iinformationClose and control function network element, carry out subsequent voice calls by MGCF network element.
7. flexible exchanging network according to claim 6 mobile switching centre, is characterized in that, described inQuery unit, specifically comprises:
Inquiry subelement, number mutual to the user profile of Distributed Services network for the code according to terminal calledExchange device is initiated inquiry request;
Receive subelement, obtained at described Distributed Services network by user profile interworking unit for receivingThe registration routing iinformation of the home network of the terminal called of getting or the visited network of current roaming.
8. the service node in Distributed Services network, comprising:
Receiving element, the call setup request message of initiating to terminal called for obtaining calling terminal;
Judging unit, belongs to flexible exchanging network for number get terminal called according to the code of terminal calledTerminal;
Query unit, for according to the code of terminal called number to Distributed Services network inquiry, and obtain byBe the visited network of home network that terminal registers in described Distributed Services network or current roamingRegistration routing iinformation;
Transmitting element, for sending to media net by the setup requests that comprises described registration routing iinformationClose and control function network element, carry out subsequent voice calls by MGCF network element.
9. a user profile interworking unit, comprising:
Receiving element, for receive flexible exchanging network mobile switching centre initiate for Distributed Services netThe registration route information query request of network terminal;
Access unit, for being linked into Distributed Services network, and obtains the Distributed Services network terminalThe registration routing iinformation of the home service node of the terminal called of returning;
Transmitting element, for notifying the registration routing iinformation of the home service node of terminal called to soft friendshipSwitching network mobile switching centre.
10. user profile interworking unit according to claim 9, is characterized in that, also comprises:
Described receiving element, also for receiving in the network of synchronously coming in the HLR of flexible exchanging networkCustomer position information;
Described access unit, also for being linked into Distributed Services network, and by described customer location letterBreath and described network routing iinformation pass to Distributed Services network.
11. 1 kinds of MGCF network elements, comprising:
Receiving element, for obtaining the home network that comprises terminal called or the visited network of current roamingThe call setup request message of registration routing iinformation, the described routing iinformation of registering is as Distributed Services networkIn service node in Distributed Services network, inquire about, according to the code of terminal called number whether pointCloth formula service network is registered and is obtained;
Conversion unit of protocol, for carrying out protocol adaptation and conversion to call setup request message;
Routing unit, for routing the call to returning of terminal called based on above-mentioned registration routing iinformationBelong in the visited network of network or current roaming.
The system of communicating by letter between the terminal of 12. 1 kinds of heterogeneous networks, comprises Distributed Services network and soft friendshipSwitching network, is characterized in that,
Described Distributed Services network comprise the arbitrary described user profile interworking unit of claim 9-10 andService node claimed in claim 8;
Described flexible exchanging network comprises the arbitrary described flexible exchanging network mobile switch control of claim 6-7MGCF network element described in center and claim 11.
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| CN106941734B (en) * | 2016-01-05 | 2020-06-12 | 中国移动通信集团公司 | Communication method, device and system |
| CN109348175B (en) * | 2018-10-25 | 2019-05-17 | 北京邮电大学 | Communication means between a kind of monitoring system |
| CN110035295A (en) * | 2019-03-06 | 2019-07-19 | 深圳市麦谷科技有限公司 | Distributed video living transmission system |
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| CN101729592A (en) * | 2008-10-29 | 2010-06-09 | 中国移动通信集团公司 | Distributed communication network and equipment and communication network separation method |
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