CN101448225B - Method for realizing circuit switch domain terminating call and system thereof - Google Patents
Method for realizing circuit switch domain terminating call and system thereof Download PDFInfo
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Abstract
The invention provides a method for realizing a circuit switch domain terminating call and a system thereof. The method comprises the steps as follows: a new MSC/VLR receives an incoming call instruction from UE; the new MSC/VLR assigns a roaming number to the UE; the MSC/VLR sends the roaming number to a former MSC/VLR which the UE is accessed into; the former MSC/VLR transfers the incoming call of the UE to the new MSC/VLR; and the new MSC/VLR establishes the incoming call with the UE. The invention simplifies the call procedure.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of implementation method and system of circuit switch domain terminating call.
Background technology
In order to keep the strong competitiveness of 3-G (Generation Three mobile communication system), must improve its network performance and reduce networking and operation cost at moving communicating field.Therefore; 3GPP (3rd Generation Partnership Project; Third generation partner program) standardization effort group is just being endeavoured the evolution of research to PS Core (Packet Switched Core, packet switched core network) and UTRAN (Universal Mobile Telecommunication SystemRadio Access Network, global system for mobile communications wireless access network) at present; Purpose is to make the PS Core (being called for short EPC) of evolution that higher transmission rate can be provided; Shorter transmission delay, and support E-UTRAN (Evolved UTRAN, the UTRAN of evolution), GERAN (GSM EDGE radio access network; GSM EDGE wireless access network; Wherein GSM is the abbreviation of Global System for Mobile communications, i.e. global system for mobile communications, and EDGE is the abbreviation of Enhanced Data Rate for GSMEvolution; Be the enhanced data rates for gsm evolution technology), the mobile management between the access network of UTRAN, WLAN (Wireless Local Area Network, WLAN) and other non-3GPP.The GSM of this evolution just is called as EPS (Evolved Packet System, the grouping domain system of evolution).It is as shown in Figure 1 to have introduced the network architecture behind the EPS, and wherein each entity declaration is following:
Subscriber equipment (User Equipment; Be called for short UE) 101: have the UE that inserts two kinds of wireless network abilities and be called bimodulus UE; Ability according to the while access of radio network; Bimodulus UE can be divided into single wireless channel again and insert and two wireless channels access UE, and the former can only insert a kind of wireless network at one time; The latter can be linked in two kinds of Radio Access Networks simultaneously.
The grouping domain system of evolution (Evolved Packet System, be called for short EPS) 102 comprises the wireless network and the core net of evolution.
Home subscriber server (Home Subscriber Server is called for short HSS) 103 comprises attaching position register (Home Location Register is called for short HLR) function, preserves user's master data and business datum.
IP (Internet Protocol; Internet protocol) IP multimedia subsystem, IMS (IP MultimediaCore Network Subsystem; Be called for short IMS) be a kind of IP-based network framework that proposes by 3GPP; It has made up an opening and service environment flexibly, supports multimedia application, and abundant multimedia service is provided for the user.IMS is based on the communication network framework of IP; Irrelevant with access technology; Except being EPS, GPRS (General Packet RadioService; GPRS), packet access network such as WLAN provides outside the business, also can provide professional for the circuit domain of GSM, UMTS mobile cellular networks such as (Universal Mobile TelecommunicationsSystem, UMTSs).
GERAN/UTRAN 104: the wireless access network of traditional GSM/UMTS network.
Mobile switching centre (Mobile Switching Center, be called for short MSC)/VLR Visitor Location Register (Visitor Location Register is called for short VLR) 105 can provide the business of circuit domain for the user, like audio call etc.
Gateway MSC (Gateway Mobile Switching Center is called for short GMSC) 106.
As UE during in the GSM/UMTS network insertion; User's basic speech business and be through circuit (Circuit Switched based on the supplementary service of speech business; Abbreviation CS) territory provides; MSC/VLR among Fig. 1, GMSC belong to the CS domain network element, the user through the CS territory can with Home Network in or the user of other network (such as fixed-line telephone network, other mobile network) to carry out the audio call class professional.
As UE during in the EPS network insertion, user's basic speech business and based on the supplementary service of speech business through IMS control, EPS system itself can not provide and control voice call service, and the carrying of IP data can only be provided.
When the EPS network design; Some operator only disposes EPS network (as shown in Figure 2) in some key area that the UMTS/GSM network has covered; Be used for IP data service at a high speed being provided for the user; Do not dispose IMS, voice call service is provided by the CS territory of the UMTS/GSM network that has covered comprehensively.Like this for the dual-mode terminal of single wireless channel; The user just can't carry out voice call service when inserting the EPS network; In order to guarantee that the user can carry out audio call; Existing solution is when carrying out audio call, lets UE switch to the network from UMTS/GSM from the EPS network, realizes speech business in UMTS/GSM network C S territory; The user switches to the UMTS/GSM network PS field at the current ongoing IP operation of EPS network, if ongoing IP operation can not switch to UMTS/GSM PS territory, just in the EPS network, hangs up or release.
In the prior art, introduced a SGs interface (as shown in fig. 1) between the Mobility Management Entity of EPS (Mobile ManagementEntity is called for short MME) and the MSC/VLR.When the UE start inserts the EPS network, set up SGs incidence relation (in MME, preserve MSC/VLR information, in MSC/VLR, preserve MME information) through the SGs interface between MME and the MSC/VLR.Follow-up user's latest position information can be updated to MME when the user moves in network, if MME changes, the MME information of preserving among the MSC/VLR also can be upgraded, and the MME information of preserving among the assurance MSC/VLR accurately always.When carrying out audio call; If called UE is in the EPS network insertion; MSC/VLR receive call for ask after, send out the CS beep-page message for the EPS network through the SGs interface, notice UE had CS to go into to exhale after the EPS network received the CS paging request message; UE is linked into the GSM/UMTS network again and accomplishes the call setup flow process, and is as shown in Figure 3:
Step 301, UE has set up the SGs incidence relation in the EPS network insertion between MME and the MSC/VLR, and UE has log-on message in MSC/VLR and MME.The user of UE has a calling, and this user is called user.The GMSC of the UMTS/GSM network at UE place receives initial address message (promptly go into to call for and ask).This goes into to call for the calling party who asks can be the user of any types such as fixed-line subscriber, mobile subscriber.GMSC inquires about routing procedure, and MSC/VLR is arrived in call proceeding.MSC/VLR receives this and calls out into calling for and ask;
Step 302, MSC/VLR receives into calling for and asks, the UE of beginning calling called subscriber.According to the SGs incidence relation information of preserving etc., MSC/VLR sends a beep-page message to EPS;
Step 303, EPS receives the paging request message that MSC/VLR sends, beginning paging UE;
Step 304, after UE receives the paging information in CS territory, in the UMTS/GSM network insertion, the completing place renewal process;
Step 305, UE sends the CS page-response message to MSC/VLR, and MSC/VLR receives the CS page-response message that UE sends, and begins normal CS and exhales flow process eventually.
In the middle of the reality, because wireless coverage etc. the UE gravity treatment can occur behind the sub-district of GSM/UMTS network, the MSC/VLR that the position is updated to receives to ask, send that MSC/VLR that beep-page message is given EPS into calling for.As shown in Figure 2, UE inserts the EPS network, and that SGs is related is MSC/VLR1; When UE has arrived MSC/VLR2 and the overlapping cover part of EPS; If at this moment UE has into calling, then should call out and arrive MSC/VLR1 earlier, MSC/VLR1 is through EPS paging UE; UE inserts the GSM/UMTS network after receiving the CS paging information, and at this moment UE will be linked into MSC/VLR2.Prior art also can be connected for the calling that makes this situation, has adopted method as shown in Figure 4, may further comprise the steps:
Step 401, UE has set up the SGs incidence relation in the EPS network insertion between MME and the MSC/VLR, and UE has log-on message in MSC/VLR and MME.GMSC receives that into calling (called this UE of being), to HSS inquiry routing iinformation, this message indicates GMSC to support the roaming retray function simultaneously;
Step 402, the MSC/VLR that HSS arrives to the UE current register (figure Central Plains MSC/VLR) request distributes roaming number, so that GMSC arrives Anchor MSC/VLR according to roaming number going into call proceeding.Anchor MSC/VLR distributes roaming number and issues HSS.In this process,, then roam the retray function support information and can be sent to Anchor MSC/VLR always if HSS supports the roaming retray function;
Step 403, HSS issues GMSC to the roaming number of receiving through the routing iinformation response message;
Step 404, GMSC analyzes the roaming number of receiving, arrives Anchor MSC/VLR to call proceeding;
Step 405-406, Anchor MSC/VLR receive into calling for and ask, according to the SGs incidence relation information of preserving etc., through EPS paging UE;
Step 407, after UE received the CS paging information, gravity treatment was initiated position updating process to the CS sub-district, and position updating request has been dealt into new MSC/VLR (Anchor MSC of this UE of front face paging/VLR is different);
Step 408 after new MSC/VLR receives the position updating request of UE, cooperates the completion proof procedure with UE.Send out position updating request to HSS then, so that upgrade the positional information of the UE that stores among the HSS;
Step 409, the user data of HSS notice Anchor MSC/VLR deletion UE, the user data of Anchor MSC/VLR deletion UE also makes sound to HSS and to answer message;
Step 410, HSS inserts new MSC/VLR to the user data of UE, and new MSC/VLR is saved in this locality to the user data of UE and makes sound to HSS and answers message;
Step 411, HSS sends out the position for new MSC/VLR and upgrades acceptance after success is inserted into new MSC/VLR to the user data of UE;
Step 412 when step 409 Central Plains MSC/VLR sends out deletion user data response message to HSS, is sent out recovery call treatment message to GMSC, and indicating in the message is the roaming retry.After GMSC receives this recovery call treatment message, echo for Anchor MSC/VLR and answer message;
Step 413, GMSC is discharged into the calling part of Anchor MSC/VLR;
Step 414, with step 413 while, GMSC asks the routing iinformation of UE once more to HSS, so that new MSC/VLR is arrived in call proceeding;
Step 415, HSS needs more new technological process (just sent out the corresponding position of step 411 upgrade accept message) of the corresponding position of first completing steps 408, distributes roaming number to new MSC/VLR request again.New MSC/VLR distributes roaming number and passes to HSS to the roaming number that distributes through response message;
Step 416, HSS passes to GMSC to the roaming number that new MSC/VLR distributes through the routing iinformation request response;
Step 417, GMSC analyzes the roaming number of receiving, arrives new MSC/VLR to call proceeding;
Step 418, new MSC/VLR receives that GMSC sends goes into to call for and asks (initial address message), guarantee earlier position that step 407 starts more new technological process accomplish.After position in receiving step 411 was upgraded and accepted message, new MSC/VLR sent out the position renewal to UE and accepts message;
Step 419, UE preserves new TMSI (Temporary Mobile Subscriber Identity, temporarily moved subscriber identity) after receiving that message is accepted in the position renewal, and returns the TMSI Reallocation Complete message for new MSC/VLR;
Step 420, if UE sends out page response for new MSC/VLR, new MSC/VLR ignores or refuses this response.New MSC/VLR accomplishes the flow process of setting up of called call flow.
In realizing process of the present invention; The inventor finds to exist at least in the existing implementation method following problem: existing GMSC, MSC/VLR, HSS get upgrading so that support the roaming retry; And the state machine model of these several network entities all is changed; HSS, MSC/VLR must safeguard and coordinate concurrent flow process, have increased the complexity that realizes greatly, are unfavorable for the network design of operator and professional carrying out smoothly.
Summary of the invention
The present invention aims to provide a kind of implementation method and system of circuit switch domain terminating call, to solve circuit switch domain terminating call implementation procedure complicated problems.
In an embodiment of the present invention, a kind of implementation method of circuit switch domain terminating call is provided, has comprised the steps: that new MSC/VLR receives and go into to call out indication from UE; New MSC/VLR distributes roaming number to UE; New MSC/VLR sends to Anchor MSC/VLR that UE inserts with roaming number; Anchor MSC/VLR is transferred to new MSC/VLR with the calling of going into of UE; New MSC/VLR and UE set up into calling.
Preferably, new MSC/VLR also comprises after roaming number is sent to Anchor MSC/VLR that UE inserts: new MSC/VLR sends location update request message to HSS; The user data of HSS notice Anchor MSC/VLR deletion UE; HSS inserts new MSC/VLR with the user data of UE; HSS sends the position renewal to new MSC/VLR and accepts message.
Preferably, new MSC/VLR reception specifically comprises from the indication of going into to call out of UE before: UE creates location update request message, wherein carries into calling and indicates; UE sends location update request message to new MSC/VLR.
Preferably, new MSC/VLR reception specifically comprises from the indication of going into to call out of UE before: UE creates page-response message, wherein carries into calling and indicates; UE sends page-response message to new MSC/VLR.
Preferably, new MSC/VLR sends to Anchor MSC/VLR that UE inserts with roaming number and specifically comprises: new MSC/VLR creates the relayed call request message, wherein carries roaming number; New MSC/VLR sends to Anchor MSC/VLR with the relayed call request message.
Preferably, new MSC/VLR sends to Anchor MSC/VLR that UE inserts with roaming number and specifically comprises: new MSC/VLR creates and sends identification request message, wherein carries roaming number; New MSC/VLR will send identification request message and send to Anchor MSC/VLR.
Preferably, Anchor MSC/VLR is transferred to new MSC/VLR with UE and specifically comprises: Anchor MSC/VLR as called number, arrives new MSC/VLR to call proceeding with the roaming number that receives.
Preferably, as called number, specifically comprise call proceeding to new MSC/VLR: Anchor MSC/VLR creates initial address message to Anchor MSC/VLR, wherein carries roaming number as called number with the roaming number that receives; Anchor MSC/VLR sends to new MSC/VLR with initial address message.
Preferably, new MSC/VLR sets up into calling with UE and specifically comprises: new MSC/VLR reception initial address message, and in obtain called number; New MSC/VLR sets up into calling according to called number and UE.
In an embodiment of the present invention, a kind of realization system of circuit switch domain terminating call is provided also, has comprised: new MSC/VLR, the calling of going into that is used to receive from UE is indicated, and to going into the call distribution roaming number, roaming number is sent to Anchor MSC/VLR that UE inserts; Set up into calling with UE; Anchor MSC/VLR is used for the calling of going into of UE is transferred to new MSC/VLR; HSS is used to receive the location update request message that new MSC/VLR sends, the user data of notice Anchor MSC/VLR deletion UE; Create the position renewal and accept message, wherein carry the user data of UE; Send the position renewal to new MSC/VLR and accept message.
Above embodiment is transferred to the method for new MSC/VLR through receiving roaming number with UE because of employing Anchor MSC/VLR, thus overcome circuit switch domain terminating call implementation procedure complicated problems, and then reached the effect of simplifying call flow.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the sketch map of the framework of related network entity in the prior art;
Fig. 2 shows in the prior art sketch map of a kind of situation of EPS network and UMTS/GSM network coverage in the EPS network design process;
The CS that Fig. 3 shows the UE that inserts EPS in the prior art calls out called flow chart (MSC/VLR that UE inserts is identical with the MSC/VLR of registration before);
The CS that Fig. 4 shows the UE that inserts EPS in the prior art calls out called flow chart (MSC/VLR that UE inserts is different with the MSC/VLR of registration before, needs the roaming retry procedure);
Fig. 5 is the flow chart according to the implementation method of the circuit switch domain terminating call of the embodiment of the invention;
Fig. 6 is the flow chart of the implementation method of circuit switch domain terminating call according to the preferred embodiment of the invention;
Fig. 7 is the block diagram according to the realization system of the circuit switch domain terminating call of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Fig. 5 is according to the flow chart of the implementation method of the circuit switch domain terminating call of the embodiment of the invention, comprises the steps:
Step S503, new MSC/VLR receive from the calling of going into of UE and indicate;
Step S504, new MSC/VLR distributes roaming number and roaming number is sent to Anchor MSC/VLR that UE inserts UE;
Step S505b, Anchor MSC/VLR is transferred to new MSC/VLR with the calling of going into of UE;
Step S506, new MSC/VLR and UE set up into calling.
This embodiment is transferred to the method for new MSC/VLR through receiving roaming number with UE because of employing Anchor MSC/VLR, thus overcome circuit switch domain terminating call implementation procedure complicated problems, and then reached the effect of simplifying call flow.
Preferably, after step S504, also comprise step S505a: new MSC/VLR sends location update request message to HSS; The user data of HSS notice Anchor MSC/VLR deletion UE; HSS inserts new MSC/VLR with the user data of UE; HSS sends the position renewal to new MSC/VLR and accepts message.
Step S505a and step S505b are parallel procedures; Because step S505a is initiated to carry out by new MSC/VLR, step S505b is initiated to carry out by Anchor MSC/VLR, so step S505a and step S505b can walk abreast; The preferred embodiment is through adopting the method for above-mentioned parallel procedure; Solved two complete route requests processes of GMSC execution in the prior art, a middle position updating process in addition, the process of these serials makes calling establishment time delay extend greatly; Cause the problem of bad experience to the user, and then reach the effect that shortens the calling procedure time delay.
Preferably, specifically comprise before the step S503: UE creates location update request message, wherein carries into calling and indicates; UE sends location update request message to new MSC/VLR.
Preferably, specifically comprise before the step S503: UE creates page-response message, wherein carries into calling and indicates; UE sends page-response message to new MSC/VLR.
Above-mentioned preferred embodiment has provided UE and has transmitted into two kinds of methods of calling out indication to new MSC/VLR.
Preferably, new MSC/VLR sends to Anchor MSC/VLR that UE inserts with roaming number and specifically comprises: new MSC/VLR creates the relayed call request message, wherein carries roaming number; New MSC/VLR sends to Anchor MSC/VLR with the relayed call request message.
Preferably, new MSC/VLR sends to Anchor MSC/VLR that UE inserts with roaming number and specifically comprises: new MSC/VLR creates and sends identification request message, wherein carries roaming number; New MSC/VLR will send identification request message and send to Anchor MSC/VLR.
Above-mentioned preferred embodiment has provided two kinds of methods that new MSC/VLR sends to roaming number Anchor MSC/VLR that UE inserts.
Preferably, step S505b specifically comprises: Anchor MSC/VLR as called number, arrives new MSC/VLR to call proceeding with the roaming number that receives.
Preferably, as called number, specifically comprise call proceeding to new MSC/VLR: Anchor MSC/VLR creates initial address message to Anchor MSC/VLR, wherein carries roaming number as called number with the roaming number that receives; Anchor MSC/VLR sends to new MSC/VLR with initial address message.
Preferably, step S506 specifically comprises: new MSC/VLR receives initial address message, and in obtain called number; New MSC/VLR sets up into calling according to called number and UE.
In the implementation method of this embodiment, also comprise: step S501, GMSC arrives Anchor MSC/VLR to call proceeding; Step S502, the paging between Anchor MSC/VLR and the UE.
In order to promote user experience, and convenient transformation, call out when needing a kind of easier method to realize inserting behind the UE re-selecting cell new MSC/VLR and still can connect the existing network network.Single wireless channel that embodiments of the invention provide inserts called realization process method when inserting new MSC/VLR behind the UE re-selecting cell; Its core concept is: this UE of the new MSC/VLR of UE proactive notification has a CS to go into to call out; New MSC/VLR distributes a new roaming number and issues Anchor MSC/VLR; Initiate position updating process to HSS then, Anchor MSC/VLR with new roaming number former go into to call out be transferred to new MSC/VLR, the new called process of MSC/VLR completion UE.
Fig. 6 is the flow chart of the implementation method of circuit switch domain terminating call according to the preferred embodiment of the invention, and wherein UE notifies new MSC/VLR to have into the execution mode of calling out has two kinds: carry through location update request message, perhaps carry through page-response message.New MSC/VLR notice Anchor MSC/VLR has two kinds to the execution mode that calling is transferred to MSC/VLR.More than the embodiment of two steps in actual implementation process, can make up in twos.Comprise the steps:
Step 601-604, GMSC receive into calling for and ask, and obtaining behind the routing iinformation call proceeding (is Anchor MSC/VLR) to the MSC/VLR of UE registration.These all are the prior arts of traditional C network, and no specific (special) requirements does not need upgrading;
Step 605-606, Anchor MSC/VLR inspection SGs related information, through EPS ICQ UE, UE receives re-selecting cell behind the CS paging information;
Step 607, UE notifies new MSC/VLR to have into calling out, and is divided into two kinds of execution modes, respectively corresponding step 607-1 and 607-2;
Step 607-1, UE send out page-response message for new MSC/VLR, and the identify label and the CS that carry the original positional information of UE, UE in this message go into to call out indication;
Step 607-2, UE send out location update request message for new MSC/VLR, and the identify label and the CS that carry the original positional information of UE, UE in this message go into to call out indication;
Step 608, it oneself is not the MSC/VLR of registration before the UE that new MSC/VLR judges, so for the UE indication go into the call distribution roaming number, and issue Anchor MSC/VLR (can through the original positional information acquisition of UE) to this roaming number.In practical implementation; New MSC/VLR can pass to Anchor MSC/VLR (embodiment A) to this roaming number through existing transmission identification request message, also can pass to Anchor MSC/VLR (embodiment B) to this roaming number through a newly-increased relayed call request message.In step 608, new MSC/VLR and UE accomplish proof procedure;
Step 609, after receiving the response of Anchor MSC/VLR to the roaming number in the step 608, new MSC/VLR is enable position new technological process more immediately, so that download the user data of UE from HSS, then can upgrade in time the positional information of UE of HSS;
Step 610; After Anchor MSC/VLR responds the roaming number notification message in the step 608; Find according to the sign in this message that step 604 is pairing go into to call out, and with this roaming number as called number, arrive new MSC/VLR to the call proceeding of going into that step 604 is corresponding.That is to say that the role of Anchor MSC/VLR has been transformed into transit exchange by a called end office;
After step 611-613, HSS received the location update request message of new MSC/VLR, the notice Anchor MSC/user data of VLR deletion UE, the user data of insertion UE were accepted message to new MSC/VLR to new MSC/VLR and home position renewal;
Step 614-615, if receive the position updating request of UE before the new MSC/VLR, then new MSC/VLR sends out the position to UE and upgrades and accept message, completing place more new technological process and TMSI is heavily distributed, and accomplishes the called process of setting up then; Otherwise new MSC/VLR carries out the independently heavy assigning process of TMSI called foundation after process is accomplished.
In the middle of practical application; When UE has ongoing when professional at EPS; The EPS network may carry out district reselecting through other message informing UE outside the CS paging request message; And notify UE to have into calling out, these situation can't influence enforcement of the present invention, have one to go into to call out because UE still can know.
As can beappreciated from fig. 6; The MSC/VLR of CS network cell and UE access and the different sight of registering before of MSC/VLR are arrived in gravity treatment because there is CS to go into to call out for the UE that is linked into EPS; Adopt normally replay call of the present invention; Simplify call flow largely, reduced the time delay of call setup, also fewer to the modification of each entity in the network.For UE MSC/VLR that inserts and the identical sight of registering before of MSC/VLR, MSC/VLR can judge according to the original positional information of UE, gets final product by flow performing shown in Figure 3 then.
Fig. 7 is according to the block diagram of the realization system of the circuit switch domain terminating call of the embodiment of the invention, comprising:
New MSC/VLR 10, the calling of going into that is used to receive from UE is indicated, and this is gone into the call distribution roaming number, and roaming number is sent to Anchor MSC/VLR that UE inserts; Set up into calling with UE;
Anchor MSC/VLR 20, are used for the calling of going into of UE is transferred to new MSC/VLR;
HSS 30, are used to receive the location update request message that new MSC/VLR sends, the user data of notice Anchor MSC/VLR deletion UE; Create the position renewal and accept message, wherein carry the user data of UE; Send the position renewal to new MSC/VLR and accept message.
In sum, utilize the method and system of the above embodiment of the present invention, gravity treatment is called out normal foundation behind the CS network cell because there is CS to go into calling to have realized being linked into the UE of EPS.The method and system of the above embodiment of the present invention has not only satisfied application demand; And simplified call flow largely; Reduced the time delay of call setup, also fewer to the modification of each entity in the network, help the EPS network and use as early as possible and professional carrying out smoothly.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the implementation method of a circuit switch domain terminating call is characterized in that, comprises the steps:
Gateway MSC receives into calling for and asks, and obtains behind the routing iinformation the original mobile switching center/VLR Visitor Location Register of call proceeding to user equipment registration;
Said original mobile switching center/VLR Visitor Location Register inspection SGs related information, through the said subscriber equipment of grouping domain system ICQ of evolution, said subscriber equipment is received re-selecting cell after the CS paging information;
New mobile switching center receives from the calling of going into of said subscriber equipment and indicates;
Said new mobile switching center is to said user equipment allocation roaming number;
Said new mobile switching center sends to said original mobile switching center/VLR Visitor Location Register that said subscriber equipment inserts with said roaming number;
Said original mobile switching center/VLR Visitor Location Register is transferred to said new mobile switching center with the calling of going into of said subscriber equipment;
Said new mobile switching center and said subscriber equipment are set up into calling.
2. implementation method according to claim 1 is characterized in that, said new mobile switching center also comprises after said roaming number is sent to original mobile switching center/VLR Visitor Location Register that said subscriber equipment inserts:
Said new mobile switching center is sent location update request message to home subscriber server;
Said home subscriber server notice original mobile switching center/VLR Visitor Location Register is deleted the user data of said subscriber equipment;
Said home subscriber server inserts new mobile switching center with the user data of said subscriber equipment;
Said home subscriber server sends the position renewal to said new mobile switching center and accepts message.
3. implementation method according to claim 1 is characterized in that, the indication of going into to call out that new mobile switching center receives from subscriber equipment specifically comprises before:
Said subscriber equipment is created location update request message, wherein carries the said indication of going into to call out;
Said subscriber equipment sends said location update request message to said new mobile switching center.
4. implementation method according to claim 1 is characterized in that, the indication of going into to call out that new mobile switching center receives from subscriber equipment specifically comprises before:
Said subscriber equipment is created page-response message, wherein carries the said indication of going into to call out;
Said subscriber equipment sends said page-response message to said new mobile switching center.
5. implementation method according to claim 1 is characterized in that, said new mobile switching center sends to original mobile switching center/VLR Visitor Location Register that said subscriber equipment inserts with said roaming number and specifically comprises:
Said new mobile switching center is created the relayed call request message, wherein carries said roaming number;
Said new mobile switching center sends to said original mobile switching center/VLR Visitor Location Register with said relayed call request message.
6. implementation method according to claim 1 is characterized in that, said new mobile switching center sends to original mobile switching center/VLR Visitor Location Register that said subscriber equipment inserts with said roaming number and specifically comprises:
Said new mobile switching center is created and is sent identification request message, wherein carries said roaming number;
Said new mobile switching center sends to said original mobile switching center/VLR Visitor Location Register with said transmission identification request message.
7. implementation method according to claim 1 is characterized in that, said original mobile switching center/VLR Visitor Location Register is transferred to said new mobile switching center with said subscriber equipment and specifically comprises:
Said original mobile switching center/VLR Visitor Location Register as called number, arrives said new mobile switching center to call proceeding with the said roaming number that receives.
8. implementation method according to claim 7; It is characterized in that; Said original mobile switching center/VLR Visitor Location Register, specifically comprises call proceeding to said new mobile switching center as called number with the said roaming number that receives:
Said original mobile switching center/VLR Visitor Location Register is created initial address message, wherein carries said roaming number as said called number;
Said original mobile switching center/VLR Visitor Location Register sends to said new mobile switching center with said initial address message.
9. implementation method according to claim 8 is characterized in that, said new mobile switching center and said subscriber equipment are set up into calling and specifically comprised:
Said new mobile switching center receives said initial address message, and in obtain said called number;
Said new mobile switching center is set up into calling according to said called number and said subscriber equipment.
10. the realization system of a circuit switch domain terminating call is characterized in that, comprising:
Original mobile switching center/VLR Visitor Location Register; Registration mobile switching center for subscriber equipment; Be used for receiving into calling for and ask at gateway MSC; Obtain behind the routing iinformation call proceeding behind said original mobile switching center/VLR Visitor Location Register; Said original mobile switching center/VLR Visitor Location Register inspection SGs related information, and the said subscriber equipment of grouping domain system ICQ through evolution, said subscriber equipment is received CS paging information re-selecting cell; The calling of going into of said subscriber equipment is transferred to new mobile switching center;
Said new mobile switching center; Be used for receiving from said subscriber equipment and go into to call out indication; Go into the call distribution roaming number to said, said roaming number is sent to original mobile switching center/VLR Visitor Location Register that said subscriber equipment inserts; Set up into calling with said subscriber equipment;
Home subscriber server is used to receive the location update request message that said new mobile switching center is sent, and notice original mobile switching center/VLR Visitor Location Register is deleted the user data of said subscriber equipment; Create the position renewal and accept message, wherein carry the user data of said subscriber equipment; Send the position renewal to said new mobile switching center and accept message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810097266 CN101448225B (en) | 2008-05-06 | 2008-05-06 | Method for realizing circuit switch domain terminating call and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810097266 CN101448225B (en) | 2008-05-06 | 2008-05-06 | Method for realizing circuit switch domain terminating call and system thereof |
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| Publication Number | Publication Date |
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| CN101448225A CN101448225A (en) | 2009-06-03 |
| CN101448225B true CN101448225B (en) | 2012-12-19 |
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| CN 200810097266 Expired - Fee Related CN101448225B (en) | 2008-05-06 | 2008-05-06 | Method for realizing circuit switch domain terminating call and system thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378392A (en) * | 2010-08-11 | 2012-03-14 | 中国移动通信集团公司 | Calling processing method and apparatus thereof |
| CN102612102B (en) * | 2011-01-19 | 2017-06-06 | 中兴通讯股份有限公司 | CS domains control network element obtains the method and system of the information of ps domain control network element |
| CN102724723B (en) * | 2011-03-30 | 2017-12-15 | 中兴通讯股份有限公司 | Control switching method and system based on IMS |
| CN103200554B (en) * | 2012-01-10 | 2018-08-10 | 中兴通讯股份有限公司 | Busy call completion service processing method and processing device |
| CN105100150B (en) * | 2014-05-13 | 2020-03-31 | 中兴通讯股份有限公司 | Cloud desktop migration method and device and distributed cloud desktop system |
| CN109640278B (en) * | 2018-12-11 | 2021-06-01 | 国网上海市电力公司 | Unconditional call transfer-based VoIP answering method suitable for multiple operators |
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| CN1400843A (en) * | 2001-08-07 | 2003-03-05 | 华为技术有限公司 | Method for implementing long-distance intelligent user roam calling |
| CN101018408A (en) * | 2007-02-01 | 2007-08-15 | 华为技术有限公司 | Service implementation method, network device and network |
| US20070238470A1 (en) * | 2006-04-10 | 2007-10-11 | Motorola, Inc. | Conservation of temporary roaming numbers |
| EP1881723A2 (en) * | 2006-07-17 | 2008-01-23 | Hewlett-Packard Development Company, L.P. | Call routing |
| CN101115056A (en) * | 2006-07-24 | 2008-01-30 | 华为技术有限公司 | Wireless network login method, device and system |
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| CN1400843A (en) * | 2001-08-07 | 2003-03-05 | 华为技术有限公司 | Method for implementing long-distance intelligent user roam calling |
| US20070238470A1 (en) * | 2006-04-10 | 2007-10-11 | Motorola, Inc. | Conservation of temporary roaming numbers |
| EP1881723A2 (en) * | 2006-07-17 | 2008-01-23 | Hewlett-Packard Development Company, L.P. | Call routing |
| CN101115056A (en) * | 2006-07-24 | 2008-01-30 | 华为技术有限公司 | Wireless network login method, device and system |
| CN101018408A (en) * | 2007-02-01 | 2007-08-15 | 华为技术有限公司 | Service implementation method, network device and network |
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| CN101448225A (en) | 2009-06-03 |
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