CN102595493A

CN102595493A - Handover method and Mobile Access Gateway Control Functions (MAGCFs)

Info

Publication number: CN102595493A
Application number: CN2012100301480A
Authority: CN
Inventors: 邹伟
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-02-10
Filing date: 2012-02-10
Publication date: 2012-07-18
Anticipated expiration: 2032-02-10
Also published as: CN102595493B

Abstract

The invention provides a handover method and MAGCFs in data source name (DSN). The method includes that a first MAGCF sends Session Initiation Protocol (SIP) INVITE information to a second MAGCF after receiving handover requests from a wireless side, and the SIP INVITE information carries port E Mobile Application Part (MAP) handover request information; the first MAGCF forms an interoffice handover bearer with the second MAGCF after receiving MAP handover response information of SIP (system in a package) of the second MAGCF; and the first MAGCF commands a first wireless network controller to switch a user into a second wireless network controller controlled by the second MAGCF after receiving MAP handover ready information of SIP (system in a package) of the second MAGCF. According to the handover method and the MAGCFs in DSN, inter-domain interoffice handover procedure of MAGCF of the DSN can be achieved.

Description

A kind of changing method and Mobile Access Gateway controlled function

Technical field

The present invention relates to moving communicating field; Particularly relate at distributed business network (Distributed Service Network; Abbreviation DSN) carries out the changing method and the mAGCF of mAGCF (mobile Access Gateway Control Function, Mobile Access Gateway controlled function) interoffice in.

Background technology

Network interconnection agreement (Internet Protocol; Be called for short IP) IP multimedia subsystem, IMS (IP Multimedia Core Network Subsystem; Be called for short IMS) be a kind of IP-based network framework that proposes by third generation partner program (3rd Generation Partnership Project is called for short 3GPP), it has made up an opening and service environment flexibly; Support multimedia application, and abundant multimedia service is provided for the user.

IMS and access technology are irrelevant; Except being GPRS (General Packet Radio Service; GPRS), WLAN (Wireless Local Area Network; WLAN) etc. (Packet Switching the is called for short PS) access network that divides into groups provides outside the business, can also be GSM (Global System for Mobile communications; Global system for mobile communications), UMTS mobile cellular networks such as (Universal Mobile Telecommunications System, unified mobile communcations systems) provides professional.

Mobile network such as GSM, UMTS adopts circuit-switched technology, is called circuit (Circuit Switched, be called for short CS) territory, can basic speech business be provided for the user, and based on the supplementary service of speech business.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic (IMS Centralized Service is called for short ICS).

Distributed business network is on the basis of the ICS of China Mobile; A new generation to telecommunication service and mobile Internet business proposed can run, manageable distributed kernel dictyosome is and function structure; Be mainly used in present telecommunications network of reply and Internet (internet) in more professional challenges of locking and facing with operation; Draw telecommunications network can run manageable characteristic and Internet on business provides fast, flexibly, low-cost and characteristics such as can expand, employ new technology (as: P2P (point-to-point) distributed is technological) drives the evolution and the development of the network architecture.

The distributed business network framework is as shown in Figure 1; Realize RANAP (Radio Access Network Application Part through introducing adaptation unit mAGCF (MSC of transformation); Radio Access Network Application Part) agreement and SIP (Session Initiation Protocol; Session initiation Protocol) conversion between has realized that BSS (base station sub-system)/RNS (Radio Network Subsystem, RNS) directly inserts DSN.

In mobile communications network; Stride (the Mobile Services Switching Centre of mobile switching centre in mobile subscriber's calling procedure; When move the lane place abbreviation MSC); Because of the wireless network signal mass change, Radio Network System (Radio Network System is called for short RNS) can trigger inter-office switchover.

At present, in the inter-office switchover flow process in common Radio Network System, as source base station sub-system RNC (Radio Network Controller; Radio network controller)-and A is through detecting, and the quality of wireless channel that the place is called out in discovery seriously descends, the channel strength of abutting subdistrict is stronger, this cell channel is congested, needs situation such as shunting; RNC-A obtains switching cell according to handoff algorithms, sends Iu (chain of command and user plane) mouthful of handoff request message, gives and switches source MSC-A; It is the inter-office switchover between the MSC that MSC-A finds, transmits MAP-Prepare-Handover Req (preparation handoff request) handoff request message through E interface, and MSC-B receives this request message; The application Handover Number is searched the RNC-B of ownership simultaneously, sends Iu mouth handoff request message; Give Target RNC-B; Require to prepare Radio Resource for the mobile subscriber (MS) of switching, after switching channels successfully activated, RNC-B returned Iu mouth switch acknowledgment message to MSC-B; MSC-B sends to MSC-A with the radio channel resource of Handover Number and RNC-B through E interface MAP-Prepare-Handover Rsp (switching response message) then; And MSC-A is established to the speech channel of MSC-B according to Handover Number through ISUP (Integrated Services Digital Network User Part, ISUP) or SIP signaling; RNC-B sends out switching command to travelling carriage, and travelling carriage inserts at new carrier wave and continues conversation.MSC-B sends out Map-Send-End-Signal Req (send and finish the signaling request) end signal to MSC-A, and the indication finishing switching lets MSC-A discharge Radio Resource.After this, MSC-A master control conversation overall process, in case end of conversation, release message is given MSC-B between the MSC-A forwarding office, discharges the interoffice speech channel.

Present inter-office switchover mechanism; Need E interface MAP (Mobile Application Part; MAP) signaling and interoffice relaying signaling fellowship, in DSN (distributed business network), the introducing of dynamic node; Make that Signalling exchange no longer relies on Signaling System Number 7 between mAGCF, tradition is switched the MAP signaling process and can't be realized.

Summary of the invention

The technical problem that the present invention will solve provides changing method and the mAGCF among a kind of DSN, to realize mAGCF inter-office switchover flow process in the DSN territory.

In order to solve the problems of the technologies described above, the invention provides the changing method in a kind of distributed business network, comprising:

After the first Mobile Access Gateway controlled function (mAGCF) receives the handoff request message from wireless side; Send Session Initiation Protocol and invite (INVITE) message to the two mAGCF, said SIP INVITE carries E mouth MAP (MAP) handoff request message;

The one mAGCF sets up inter-office switchover with the 2nd mAGCF and carries after receiving the MAP switching response message of SIP encapsulation of the 2nd mAGCF;

After the MAP that the one mAGCF receives the SIP encapsulation of the 2nd mAGCF prepares to switch ready message, notify first radio network controller user to be switched to second radio network controller of the 2nd mAGCF control.

Further, said method also has following characteristics: a said mAGCF and the 2nd mAGCF set up the inter-office switchover carrying and comprise:

First terminal that the one mAGCF notifies first WMG (MGW) in original customer call context, to be established to the 2nd corresponding MGW of the 2nd mAGCF sends to the 2nd mAGCF with the information of session description protocol at first terminal;

It is wireless side application context and terminal that the 2nd mAGCF notifies the 2nd MGW; Information of session description protocol according to first terminal that receives is being in the context of wireless side application; Apply for second terminal of a MGW; Return success response message to a mAGCF, carry the information of session description protocol at second terminal;

The one mAGCF notifies a MGW to revise original customer call context end points according to the information of session description protocol at second terminal, sets up inter-office switchover and carries.

The 2nd mAGCF notifies second WMG (MGW) to be wireless side application context and terminal; At second terminal for applying for a MGW in the context of wireless side application; Return success response message to a mAGCF, carry the information of session description protocol at second terminal;

The one mAGCF notifies a MGW in original customer call context, is established to first terminal of the 2nd MGW according to the information of session description protocol at second terminal that receives, and the information of session description protocol at first terminal is sent to the 2nd mAGCF;

The context end points that the 2nd mAGCF notifies the 2nd MGW to be revised as the wireless side application according to the information of session description protocol at first terminal is set up inter-office switchover and is carried.

Further, said method also has following characteristics:

The request header field of said SIP INVITE all carries with the support header field and switches indication, and source Mobile Station International ISDN Number is the mobile switching center number of a mAGCF, and destination number is the mobile switching center number of the 2nd mAGCF,

Increase by one is used to carry the content type field of E mouth MAP handoff request message in the said SIP INVITE; Perhaps, said E mouth MAP handoff request message is encapsulated in the extend markup language application field.

Further, said method also has following characteristics: a said mAGCF notifies first radio network controller that the user is switched to after second radio network controller of the 2nd mAGCF management, also comprises:

After the one mAGCF receives the handoff completion message of the 2nd mAGCF, send chain of command and user plane mouth release command message notice wireless side and discharge the Radio Resource that original conversation takies.

The one mAGCF finishes the back at user's communication and finishes to switch through SIP cancellation message or SIP bye message notification the 2nd mAGCF.

After the one mAGCF receives the SIP INFO that carries the follow-up switching message of E mouth MAP that the 2nd mAGCF sends, notify the Radio Resource that first radio network controller prepares to switch after, send follow-up switching response message to the 2nd mAGCF;

After the one mAGCF receives the handoff completion message of first radio network controller, notify the 2nd mAGCF to discharge and last time switch the terminal resource that distributes.

The one mAGCF is encapsulated in the follow-up switching message of said E mouth MAP in the SIP INVITE after receiving the SIP INFO that carries the follow-up switching message of E mouth MAP of the 2nd mAGCF transmission, sends to the 3rd mAGCF then;

The one mAGCF notifies the 2nd mAGCF to switch after receiving the preparation switching response message that the 3rd mAGCF returns;

The one mAGCF and the 3rd mAGCF set up inter-office switchover and carry;

After the one mAGCF receives the preparation handoff completion message of the 3rd mAGCF, notify the 2nd mAGCF to discharge corresponding media resource.

In order to address the above problem, the present invention also provides a kind of Mobile Access Gateway controlled function (mAGCF), comprising:

First module; After being used to receive handoff request message from wireless side; Send Session Initiation Protocol and set up conversation request (INVITE) message to the first target mAGCF, said SIP INVITE carries E mouth MAP (MAP) handoff request message;

Second module, be used to receive the MAP switching response message of SIP encapsulation of the first target mAGCF after, set up inter-office switchover with the first target mAGCF and carry;

Three module after the MAP that is used to receive the SIP encapsulation of the first target mAGCF prepares to switch ready message, notifies first radio network controller user to be switched to second radio network controller of first target mAGCF control.

Further, above-mentioned mAGCF also has following characteristics:

The request header field of said SIP INVITE all carries with the support header field and switches indication, and source Mobile Station International ISDN Number is the mobile switching center number of this mAGCF, and destination number is the mobile switching center number of the first target mAGCF,

Further, above-mentioned mAGCF also has following characteristics: also comprise:

Four module after being used to receive the handoff completion message of the first target mAGCF, sends chain of command and user plane mouth release command message notice wireless side and discharges the Radio Resource that original conversation takies.

The 5th module is used for after user's communication finishes, and finishes to switch through SIP cancellation message or the SIP bye message notification first target mAGCF.

The 6th module; After being used to receive the SIP INFO that carries the follow-up switching message of E mouth MAP of first target mAGCF transmission; Notify first radio network controller to prepare the Radio Resource that switches, send follow-up switching response message to the first target mAGCF then;

The 7th module after being used to receive the handoff completion message of first radio network controller, is notified the first target mAGCF to discharge and is last time switched the terminal resource that distributes.

The 8th module after being used to receive the SIP INFO that carries the follow-up switching message of E mouth MAP of first target mAGCF transmission, is encapsulated in the follow-up switching message of said E mouth MAP in the SIP INVITE, sends to the second target mAGCF then;

The 9th module, be used to receive the preparation switching response message that the second target mAGCF returns after, notify the first target mAGCF to switch; And set up inter-office switchover with the second target mAGCF and carry;

The tenth module after being used to receive the preparation handoff completion message of the second target mAGCF, notifies the first target mAGCF to discharge corresponding media resource.

To sum up, the present invention provides changing method and the mAGCF among a kind of DSN, can realize mAGCF inter-office switchover flow process in the DSN territory.

Description of drawings

Fig. 1 is the distributed business network system architecture diagram.

Fig. 2 is the mAGCF inter-office switchover flow chart of the embodiment of the invention one.

Fig. 3 is the mAGCF inter-office switchover flow chart of the embodiment of the invention two.

Fig. 4 is the mAGCF inter-office switchover flow chart of the embodiment of the invention three.

Fig. 5 is the mAGCF inter-office switchover flow chart of the embodiment of the invention four.

Fig. 6 is the sketch map of the mAGCF of the embodiment of the invention.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.

Fig. 2 is the flow chart of the mAGCF inter-office switchover of the embodiment of the invention one, comprises the steps:

Step 201 is switched source RNC-A and is sent Iu mouth handoff request message (Iu-Relocation-Require) to switching source mAGCF-A;

Step 202 is switched source mAGCF-A E interface MAP message (MAP-Prep-Handover Req prepares handoff request message) is encapsulated in the SIP INVITE, sends to target side mAGCF-B;

Require in the INVITE (request), Supported (support) header field all carry HO (HandOver; Switch) indication; Number among FORM (source), the TO (target) is respectively the MSCNumber (MSC number) of source mAGCF-A and the MSCNumber of target side mAGCF-B; Do not carry beared information,, can expand sip message simultaneously in order to transmit E interface MAP message; Increase Content-type (content type) and be encapsulated among the application/xml (extend markup language application field) like application/map or with E interface MAP message, with special label as<map-info></map-info>Indication MAP message;

Step 203; MAGCF-B receives and has the SIP INVITE that switches message (MAP-Prep-Handover Req); Send Iu mouth handoff request message (Iu-Relocation-Request) and give Target RNC-B, require to prepare Radio Resource into the mobile subscriber MS that switches;

Step 204, Target RNC-B accomplishes Radio Resource and prepares, and returns Iu mouth switch acknowledgment message (Iu-Relocation-Request Ack) to mAGCF-B;

Step 205, mAGCF-B sends SIP 183 (call progress message) the notice mAGCF-A of encapsulation E interface MAP message (MAP-Prep-Handover Rsp prepares handoff response);

Step 206, mAGCF-A notice MGW (WMG)-A is established to the terminal (Ta) of MGW-B in original customer call context, SDP (Session Description Protocol) information of Ta is carried in the SIP UPDATE message returns to mAGCF-B;

Step 207; MAGCF-B notice MGW-B is wireless side application context and terminal, is being the terminal Tb that applies for MGW-A in the context of wireless side application according to the Ta information of receiving, returns SIP200 (success response message) and (UPDATE) gives mAGCF-A in the message; Carry the SDP information of Tb simultaneously

MAGCF-A revises original customer call context end points according to the SDP information notice MGW-A of Tb, sets up inter-office switchover and carries;

Step 208, mAGCF-B sends SIP 180 (preparing to switch ready) message and gives source mAGCF-A;

Step 209, mAGCF-A is to switching command under the RNC-A (Iu-Relocation-Command) message;

Step 210, when said MS successfully inserts Target RNC-B, Target RNC-B successfully inserts through handoff completion message (Iu-Relocation-Complete) notice mAGCF-B mobile phone;

Step 211, mAGCF-B sends SIP 200 (INVITE) message and gives source mAGCF-A, also encapsulates representative simultaneously in this message and switches the MAP message of accomplishing (Map-Send-End-Signal Req);

Step 212, mAGCF-A returns SIP ACK message and gives step mAGCF-B;

Step 213, mAGCF-A sends Iu mouth release command message (Iu-Release-Command) notice RNC-A and discharges the Radio Resource that original conversation takies;

Step 214, end of conversation, mAGCF-A discharges corresponding resource through the SIP BYE message informing mAGCF-B of encapsulating MAP message (Map-Send-End-Signal Rsp);

If the opposite end on-hook has the end of conversation message informing mAGCF-A that sends the opposite end, during the local terminal on-hook, mAGCF-B uses the SIP INFO notice mAGCF-A of encapsulation E interface MAP_PROCESS_ACCESS_SIGNALLING message.

Optional, after initiating to switch, before end of conversation, for the Iu mouth message between RNC and mAGCF, mAGCF-A and mAGCF-B use the SIP INFO of encapsulation E interface MAP (MAP) message to carry out the message transmission;

Optional, before mAGCF-A receives 200, taking place unusually, mAGCF-A sends Cancel (cancellation message) to be finished to switch, and after mAGCF-A received 200, mAGCF-A and mAGCF-B can use BYE (byebye message) to finish switching;

Fig. 3 is the flow chart of the mAGCF inter-office switchover of the embodiment of the invention two, comprises the steps:

Step 301 is switched source RNC-A and is sent Iu mouth handoff request message (Iu-Relocation-Require) to switching source mAGCF-A,

Step 302 is switched source mAGCF-A E interface MAP message (MAP-Prep-Handover Req) is encapsulated in the SIP INVITE, sends to target side mAGCF-B;

Require, Suppotred header field carry the HO indication in the INVITE; Number among FORM, the TO is the MSCNumber of source mAGCF-A and target side mAGCF-B; Do not carry beared information,, can expand sip message simultaneously in order to transmit E interface MAP message; Increase Content-type such as application/map or be encapsulated among the application/xml, with special label as<map-info></map-info>Indication MAP message;

Step 303, mAGCF-B receives the SIP INVITE that has handover information, sends Iu mouth handoff request message and gives Target RNC-B, requires to prepare Radio Resource into the mobile subscriber MS that switches;

Step 304, Target RNC-B accomplishes Radio Resource and prepares, and returns Iu mouth switch acknowledgment message to mAGCF-B;

Step 305, mAGCF-B sends the SIP 183 message informing mAGCF-A of encapsulation E interface MAP message (MAP-Prep-Handover Rsp);

Step 306, mAGCF-B notice MGW-B is wireless side application context and terminal, for applying for the terminal Tb of MGW-A in the context of wireless side application, the SDP information of Tb is carried at returns to mAGCF-A in the SIP UPDATE message;

Step 307, mAGCF-A notice MGW-A is established to the terminal Ta of MGW-B according to the Tb that receives in original customer call context, the SDP information of Ta is carried in SIP 200 (UPDATE) message returns to mAGCF-B;

The context end points that mAGCF-B notifies MGW-B to be revised as the wireless side application according to the SDP information of Ta, inter-office switchover carry to be set up;

Step 308, mAGCF-B sends SIP 180 message and gives source mAGCF-A;

Step 309, mAGCF-A is to switching command under the RNC-A (Iu-Relocation-Command) message;

Step 310, when said MS successfully inserts, Target RNC-B successfully inserts through handoff completion message Iu-Relocation-Complete notice mAGCF-B mobile phone;

Step 311, mAGCF-B sends SIP 200 (INVITE) message and gives source mAGCF-A, also encapsulates representative simultaneously in this message and switches the MAP message of accomplishing (Map-Send-End-Signal Req);

Step 312, mAGCF-A returns SIP ACK message and gives mAGCF-B;

Step 313, mAGCF-A sends Iu-Release-Command notice RNC-A and discharges the Radio Resource that original conversation takies;

Step 314, end of conversation, mAGCF-A discharges corresponding resource through the SIP BYE message informing mAGCF-B of encapsulating MAP message (Map-Send-End-Signal Rsp);

Optional, after initiating to switch, before end of conversation, for the Iu mouth message between RNC and mAGCF, mAGCF-A and mAGCF-B use the SIP INFO of encapsulation E interface MAP message to carry out the message transmission;

Optional, before mAGCF-A receives 200, taking place unusually, mAGCF-A sends Cancel to be finished to switch, and after mAGCF-A received 200, mAGCF-A and mAGCF-B can use BYE to finish switching.

Fig. 4 is the flow chart of the follow-up switchback of mAGCF inter-office switchover of the embodiment of the invention three, comprises the steps:

Step 401, RNC-B sends Iu mouth handoff request message Iu-Relocation-Require and gives mAGCF-B;

Step 402, mAGCF-B is encapsulated in E interface MAP message (MAP-Prep-Sub-Handover Req, follow-up handoff request) in SIP INFO (information) message, sends to mAGCF-A,

Require, Suppotred header field carry the HO indication in the INFO, and the number among FORM, the TO is the MSCNumber of source mAGCF-B and target side mAGCF-A, and the encapsulation of MAP message is of step 202;

Step 403; MAGCF-A receives the SIP INFO that has follow-up handover information; Analyze To header field and find it is switchback, send Iu mouth handoff request message (Iu-Relocation-Request) and give Target RNC-A ', require to prepare Radio Resource into the mobile subscriber MS that switches;

Step 404, Target RNC-A ' accomplishes Radio Resource and prepares, and returns Iu mouth switch acknowledgment message (Iu-Relocation-Request Ack) to mAGCF-A;

Step 405, mAGCF-A sends SIP 200 (INFO) the message informing mAGCF-B of encapsulation E interface MAP message (MAP-Prep-Sub-Handover Rsp);

Step 406, mAGCF-B is to switching command under the RNC-B (Iu-Relocation-Command) message;

Step 407 successfully inserts through handoff completion message (Iu-Relocation-Complete) notice mAGCF-A mobile phone when said MS successfully inserts Target RNC-A ' Target RNC-A ';

Step 408, mAGCF-A discharges and last time switches the media resource that distributes through the SIP BYE message informing mAGCF-B of encapsulating MAP message (Map-Send-End-Signal Rsp);

Step 409, mAGCF-B sends Iu-Release-Command notice RNC-B and discharges the Radio Resource that original conversation takies;

Step 410, mAGCF-B sends SIP 200 (BYE) notice mAGCF-A, discharges and accomplishes.

Fig. 5 switches to third-party flow chart for the mAGCF inter-office switchover of the embodiment of the invention four is follow-up, comprises the steps:

Step 501, RNC-B sends Iu mouth handoff request message (Iu-Relocation-Require) and gives mAGCF-B,

Step 502; MAGCF-B is encapsulated in E interface MAP message (MAP-Prep-Sub-Handover Req) in the SIP INFO; Send to mAGCF-A,, can expand sip message simultaneously in order to transmit E interface MAP message; Increase Content-type such as application/map or be encapsulated among the application/xml, with special label as<map-info></map-info>Indication MAP message;

Step 503; MAGCF-A is encapsulated in E interface MAP message (MAP-Prep-Handover Req) in the SIP INVITE; Send to mAGCF-B '; Require, Suppotred header field carry the HO indication in the INVITE, and the number among FORM, the TO is the MSCNumber of mAGCF-A and mAGCF-B ', does not carry beared information;

Step 504, mAGCF-B ' receives the SIP INVITE that has handover information, sends Iu mouth handoff request message (Iu-Relocation-Request) and gives Target RNC-B ', requires to prepare Radio Resource into the mobile subscriber MS that switches;

Step 505, Target RNC-B ' accomplishes Radio Resource and prepares, and returns Iu mouth switch acknowledgment message (Iu-Relocation-Request Ack) for mAGCF-B ';

Step 506, the SIP 183 message informing mAGCF-A of mAGCF-B ' transmission encapsulation E interface MAP message (MAP-Prep-Handover Rsp);

Step 507, mAGCF-A sends SIP 200 (INFO) message of encapsulation E interface MAP message (MAP-Prep-Sub-Handover Rsp) and gives source mAGCF-B;

Step 508, mAGCF-B is to switching command Iu-Relocation-Command message under the RNC-B;

Step 509, mAGCF-A notice MGW-A is established to the terminal Ta ' of MGW-B ' in original customer call context, the SDP information of Ta ' is carried in the SIP UPDATE message returns to mAGCF-B ';

Step 510; MAGCF-B ' notice MGW-B ' is wireless side application context and terminal;, return and give mAGCF-A, the SDP information of carrying Tb simultaneously in SIP 200 (UPDATE) message for applying for the terminal Tb ' of MGW-A in the context of wireless side application according to Ta ' information of receiving; MAGCF-A revises original customer call context end points according to the SDP information notice MGW-A of Tb ', sets up inter-office switchover and carries;

Step 511, when said MS successfully inserts Target RNC-B ', Target RNC-B ' successfully inserts through handoff completion message Iu-Relocation-Complete notice mAGCF-B ' mobile phone;

Step 512, mAGCF-B ' transmission SIP 200 (INVITE) message is given mAGCF-A, also encapsulates representative simultaneously in this message and switches the MAP message of accomplishing (Map-Send-End-Signal Req);

Step 513, mAGCF-A returns SIP ACK message and gives mAGCF-B ';

Step 514, mAGCF-A discharges corresponding media resource through the SIP BYE message informing mAGCF-B of encapsulating MAP message (Map-Send-End-Signal Rsp);

Step 515, mAGCF-B sends SIP 200 (BYE) message and gives mAGCF-A,

Step 516, mAGCF-B sends Iu-Release-Command notice RNC-B and discharges the Radio Resource that original conversation takies;

Step 517, end of conversation, mAGCF-A discharges corresponding resource through the SIP BYE message informing mAGCF-B ' of encapsulating MAP message (Map-Send-End-Signal Rsp).

Fig. 6 is the sketch map of the mAGCF of the embodiment of the invention, and is as shown in Figure 6, and the mAGCF of present embodiment comprises:

First module after being used to receive the handoff request message from wireless side, is sent Session Initiation Protocol and is invited (INVITE) message to the first target mAGCF, and said SIP INVITE carries E mouth MAP (MAP) handoff request message;

Three module after the MAP that is used to receive the SIP encapsulation of the first target mAGCF prepares handoff completion message, notifies first radio network controller user to be switched to second radio network controller of first target mAGCF control.

Wherein, the request header field of said SIP INVITE all carries with the support header field and switches indication, and source Mobile Station International ISDN Number is the mobile switching center number of this mAGCF, and destination number is the mobile switching center number of the first target mAGCF,

In a preferred embodiment, said mAGCF can also comprise:

The 8th module after being used to receive the SIP INFO that carries the follow-up switching message of E mouth MAP of first target mAGCF transmission, is encapsulated in the follow-up switching message of said E mouth MAP in the SIPINVITE message, sends to the second target mAGCF then;

One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

More than be merely the preferred embodiments of the present invention; Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. the changing method in the distributed business network comprises:

2. the method for claim 1 is characterized in that: a said mAGCF and the 2nd mAGCF set up inter-office switchover and carry and comprise:

3. the method for claim 1 is characterized in that: a said mAGCF and the 2nd mAGCF set up inter-office switchover and carry and comprise:

4. like each described method of claim 1-3, it is characterized in that:

5. like each described method of claim 1-3, it is characterized in that: a said mAGCF notifies first radio network controller that the user is switched to after second radio network controller of the 2nd mAGCF management, also comprises:

6. like each described method of claim 1-3, it is characterized in that: a said mAGCF notifies first radio network controller that the user is switched to after second radio network controller of the 2nd mAGCF management, also comprises:

7. like each described method of claim 1-3, it is characterized in that: a said mAGCF notifies first radio network controller that the user is switched to after second radio network controller of the 2nd mAGCF management, also comprises:

8. like each described method of claim 1-3, it is characterized in that: a said mAGCF notifies first radio network controller that the user is switched to after second radio network controller of the 2nd mAGCF management, also comprises:

The one mAGCF and the 3rd mAGCF set up inter-office switchover and carry;

9. a Mobile Access Gateway controlled function (mAGCF) comprising:

10. mAGCF as claimed in claim 9 is characterized in that,

11. like claim 9 or 10 described mAGCF, it is characterized in that, also comprise:

12. like claim 9 or 10 described mAGCF, it is characterized in that, also comprise:

13. like claim 9 or 10 described mAGCF, it is characterized in that, also comprise:

14. like claim 9 or 10 described mAGCF, it is characterized in that, also comprise: