CN102045687A

CN102045687A - Method and system for establishing association relationship of combined nodes

Info

Publication number: CN102045687A
Application number: CN200910236034XA
Authority: CN
Inventors: 胡英; 宗在峰; 梁爽
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-10-16
Filing date: 2009-10-16
Publication date: 2011-05-04
Anticipated expiration: 2029-10-16
Also published as: CN102045687B

Abstract

The invention provides a method and a system for establishing an association relationship of combined nodes. The method comprises the following steps of: when the association relationship is established among the combined nodes, sending information of a first network element and/or information of a second network element to a service network element; and selectively storing the received information through the service network element, wherein the stored information is used as association information for storage. Through the scheme of the invention, one-time position update and interaction process is canceled and reduced, so the interactive signaling between the combo nodes and a mobile switching center/visitor location register (MSC/VLR) is reduced, and the processing speed of the corresponding flow is quickened; and under the condition that the MSC/VLR can support and store two kinds of association information, a serving GPRS support node (SGSN) does not need to activate the idle mode signaling reduction (ISR) function so as to reduce the signaling load when user equipment (UE) returns to an evolved packet system (EPS) network to initiate united update.

Description

A kind of combined joint is set up the method and system of incidence relation

Technical field

The present invention relates to access technology, refer to that especially a kind of combined joint sets up the method and system of incidence relation.

Background technology

At present, the mobile network who is runing mainly is global system for mobile communications (GSM, Global Systemfor Mobile Communication)/universal mobile telecommunications system (UMTS, Universal MobileTelecommunication System) network, the GSM/UMTS network is divided into circuit switching (CS, CircuitSwitching) territory and packet switching (PS, Packet Switching) territory.

For higher transmission rate, shorter purposes such as transmission delay can be provided, third generation partner program (3GPP, 3rd Generation Partnership Project) standardization effort group just is being devoted to study the evolution to the UMTS network PS field, the mobile communication system of this evolution is called as the grouping domain system (EPS of evolution, Evolved Packet System), the EPS network has only the PS territory.

Fig. 1 is the schematic diagram of the existing GSM/UMTS network architecture relevant with this paper with the EPS network, as shown in Figure 1, comprising:

Travelling carriage (MS, Mobile Station)/subscriber equipment (UE, User Equipment) 101, in this article, the unified UE of use of MS/UE represents, and is also referred to as terminal.UE can be user's hand held mobile phone, palmtop PC (PDA, Personal Digital Assistance), the notebook computer that data card is arranged or a machine etc.

Node (the eNodeB of evolution, Evolved NodeB) 102, be the network element that comprises in the wireless access network (E-UTRAN, Evolved Universal Mobile Telecommunication System Radio AccessNetwork) of evolution, for the access of terminal provides Radio Resource.E-UTRAN is the wireless access network of EPS network.

Mobility Management Entity (MME, Mobility Management Entity) 103, it is a chain of command entity of EPS network, the server of interim storaging user data, be in charge of and store the UE context, such as UE/ user ID, mobility management states, user security parameters etc., for the user distributes temporary mark.

Basis station system (BSS, Basic Station System)/RNS (RNS, RadioNetwork Subsystem) 104 is wireless access networks of GSM/UMTS network.

GPRS serving GPRS support node (SGSN, Serving GPRS Support Node) 105 is control network elements of GSM/UMTS network PS field, and the positional information of record UE is responsible for carrying out work such as mobile management.

Because the function class of MME and SGSN seemingly, all is the mobile management node, and casual user's database is all arranged, and therefore, has a kind of special joint in the network evolution process, combo node (being also referred to as combined joint, perhaps association node) 106.The combo node is integrated with the function of SGSN and MME, and the interface between two network elements of SGSN and MME is an internal interface, and the mode by inside story or shared drive between MME that comprises in the combo node and the SGSN is carried out the message communication.This combined joint network design is simple, and can reduce Signalling exchange time delay between network element, and some operator can adopt this mode when disposing the EPS system.When the network using combined joint is disposed, if UE initiates registration in a wireless access system, and selected this combined joint, when UE moves to the another one wireless access system, under the possible situation of service range, require to select same combined joint afterwards.

(the MSC of mobile switching centre, Mobile Switching Center)/VLR Visitor Location Register (VLR, Visitor Location Register) 107, be the control network element in GSM/UMTS network C S territory, be responsible for the mobile management of UE and call out function such as control.This MSC/VLR also can be the new functional entity MSC Server/VLR after the 3GPP R4 stage, and unification is represented with MSC/VLR in this article.

At the GSM/UMTS network, UE can be respectively be linked into the attachment update that MSC/VLR and SGSN carry out CS territory and PS territory by BSS/RNS.The mode that UE carries out CS territory and PS territory attachment update respectively need take Radio Resource respectively and carry out Signalling exchange, for this reason, introduces Gs interface between MSC/VLR and SGSN.Gs interface is finished and set up the Gs incidence relation between MSC/VLR and SGSN, promptly preserves the MSC/VLR number in SGSN, preserves the SGSN number in MSC/VLR, and after setting up the Gs incidence relation MSC/VLR by the functions such as UE of SGSN calling called subscriber.

The Gs incidence relation is to upgrade (RAU, Routing Area Update) and location area updating (LAU, Location Area Update) foundation by the joint route district.The joint route area/location upgrades, be exactly that UE is when carrying out Routing Area Update in the PS territory, UE carries an associated update sign in Routing Area Update message, SGSN receives this message, carry out the Routing Area Update of this UE, and send location update message to MSC/VLR, wherein carry the SGSN number.MSC/VLR receives the location update message that SGSN sends, and carries out the position updating process in the CS territory of UE, and sets up incidence relation by preserving SGSN number and SGSN.When the renewal of joint route area/location is finished, just set up the Gs incidence relation between SGSN and the MSC/VLR, UE finishes attachment update respectively in PS territory and CS territory.

After setting up the Gs incidence relation, MSC/VLR realizes the paging of CS business by SGSN.For example, the user under the UE as the called subscriber by the customer call of present networks or other network, when carrying out exhaling end, MSC/VLR by Gs interface to SGSN transmission CS paging request message.SGSN initiates the CS paging to BSS/RNS after receiving the CS paging request message, and the CS service paging is delivered to UE.

What Gs interface adopted is Base Station System Application Part+, physically based on E1 interface or IP interface.Protocol stack is divided into two kinds, and a kind of arrowband SS7 signaling load mode that is based on adopts BSSAP+/SCCP/MTP3/MTP2, and a kind of SIGTRAN signaling load mode that is based on adopts BSSAP+/SCCP/M3UA/SCTP/IP.Wherein, signaling connection control protocol (SCCP, SignalingConnection Control Part) is the part of SS7.MSC/VLR and SGSN use the Gs incidence relation of wherein preserving (the other side's number just) to carry out addressing as global title (GT, Global Title).

In the EPS network, never dispose Internet protocol (IP in order to separate, Internet Protocol) IP multimedia subsystem, IMS (IMS, IP Multimedia Subsystem) under the situation of network, the user can initiation and business such as receipt of call, short message when the EPS network insertion for UE, 3GPP has developed circuit domain dropping (CSFB, CS Fallback) technology.

In the CSFB technology, introduce the SGs interface between MME and MSC/VLR, SGs and Gs interface function and principle are similar.When UE inserts the EPS network, UE carries out CSFB and adheres to (EPS and CS network attachment) or associating tracing section updating (TAU, Tracking Area Update) and LAU, MME sends location update request message to MSC/VLR, wherein carry the IP address of MME, during concrete enforcement also can be the universe name (FQDN of MME, Fully Qualified Domain Name) mode such as, unified in this article IP address mode representative with MME, MSC/VLR receives the location update message that MME sends, carry out the CS position updating process, and by setting up incidence relation between preservation MME address and the MME, adhere to or unite tracking area/location area updating when finishing at CSFB, set up the SGs incidence relation between MME and the MSC/VLR and (in MME, preserved the MSC/VLR number, in MSC/VLR, preserve the IP address information of MME), UE finishes respectively in EPS network and GSM/UMTS network C S territory and adheres to/upgrade.

After setting up the SGs association, when carrying out the professional as voice of CS when exhaling end, MSC/VLR receives calling, sends the CS beep-page message by the SGs interface to MME, after MME receives the CS beep-page message, by E-UTRAN the CS paging is sent to UE.

What the SGs interface adopted is the SGsAP agreement, and protocol stack is SGsAP/SCTP/IP.SCTP (SCTP, Stream Control Transmission Protocol) be to transmit a kind of SCTP that working group (SIGTRAN) proposes towards multimedia communication by the signaling of IEFT, be used for transmission pstn signaling message on IP network, promptly usually said SS7 over IP.That SCTP provides is connection-oriented, the reliable transmission of point-to-point, has functions such as powerful congested control, data-bag lost discovery.

Stipulate in the prior art, at synchronization, corresponding UE only preserves a Gs association or SGs related information in MSC/VLR, and in associating RAU/LAU process in order to guarantee that the follow-up EPS of the retracting network of UE can rebuild the SGs association and need signaling reduction under the deexcitation idle pulley (ISR, Idle modeSignaling Reduction).

Below in conjunction with Fig. 2 and flow process shown in Figure 3 prior art is described.In this article, EPS network and the GSM/UMTS network area of serving the current access of UE with MSC/VLR is that example illustrates prior art and technical scheme of the present invention and embodiment.

Fig. 2 adheres to/upgrades for UE in the prior art unites at the GSM/UMTS network earlier, carries out the flow chart of associated update again at the EPS network, as shown in Figure 2, comprising:

UE carries out following the associating and adheres to/renewal process from the GSM/UMTS network insertion:

Step 200:UE initiates to unite to adhere to SGSN by BSS/RNS, perhaps joint route area/location update inquiry information.

Step 201:SGSN carries out this UE and adheres to/upgrade handling process at the GSM/UMTS network PS field, and find corresponding MSC/VLR according to the UE current position information, send position updating request to this MSC/VLR, in this location update request message, carry the SGSN number.

Step 202:MSC/VLR carries out the CS registration updating flow process of this UE, and registration responds to SGSN home position update request after finishing.

Step 203:SGSN returns to unite to UE and adheres to/the update request response message.

By step 200～step 203, finished the combined registering of UE at SGSN, MSC/VLR, between SGSN and MSC/VLR, set up the Gs association, Gs interface activates, and what preserve among the MSC/VLR is the SGSN number.

Follow-up, when UE moves to E-UTRAN, when E-UTRAN inserts, carry out following associating TAU/LAU process:

Step 204:UE sends associating TAU/LAU request to MME.

The information that step 205:MME carries according to UE finds the SGSN of original registration, obtains the UE context from SGSN.If SGSN and MME support the ISR function, then in this process, set up ISR incidence relation, ISR function activation between SGSN and the MME.

Step 206:MME finds corresponding MSC/VLR, and sends location update request message to this MSC/VLR according to the information of carrying in the associating TAU/LAU request message, initiates CS register update process, the IP address of carrying MME in the message.

Step 207:MSC/VLR receives the location update request message that MME sends, the SGSN number that deletion is wherein preserved, and response message after finishing CS register update process, is upgraded to the MME home position in the IP address of preserving MME.

After step 208:MME finishes renewal, return associating TAU/LAU request response to UE, carry the mark that ISR activates in this message, UE receives response message, preserves relevant information and setting ISR function activation sign wherein.

By step 204～step 208, finish the register update of UE at MME and MSC/VLR, activate the ISR function, set up the SGs incidence relation between MSC/VLR and the MME, the SGs interface activates, and the Gs incidence relation is deleted, Gs interface does not activate, and what preserve among the MSC/VLR is the IP address of MME.

Fig. 3 adheres to/upgrades for UE in the prior art unites at the EPS network earlier, carries out the flow chart of associated update again at the GSM/UMTS network, as shown in Figure 3.Except the ISR function did not activate in associating RAU/LAU process, its flow process and flow process shown in Figure 2 were similar, roughly are described below:

UE is from the E-UTRAN network insertion, carries out that following CSFB adheres to or the associated update process:

Step 300:UE sends CSFB to MME and adheres to or unite the TAU/LAU request.

Step 301:MME carry out UE the EPS network adhere to/upgrade processing, and initiate the position updating request process to MSC/VLR, MME is carried at self IP address and sends to MSC/VLR in the location update request message.

Step 302:MSC/VLR carries out the CS register update process of UE, preserves the IP address of MME, after finishing CS register update process, to MME home position update request response message.

Step 303:MME returns CSFB to UE and adheres to or unite TAU/LAU request response.

By step 300～step 303, finish the registration of UE at MME and MSC, set up the SGs incidence relation between MSC/VLR and the MME, the SGs interface activates, and what preserve among the MSC/VLR is the IP address of MME.

Follow-up, when UE moves to the GSM/UMTS network insertion, unite the RAU/LAU process:

Step 304:UE sends the RAU/LAU request message by BSS/RNS to SGSN.

The information that step 305:SGSN carries according to UE finds the MME of original registration, and obtains the UE context from MME.When guaranteeing that follow-up UE retracts regional that EUTRAN registered, can initiate associating TAU/LAU process and rebuild the SGs association, SGSN notifies MME with this information in (being that SGs is related exists) situation deactivating ISR function of judging that the CSFB function has activated in context response information.

Step 306:SGSN is carried at self number in the location update request message and sends to MSC/VLR.

Step 307:MSC/VLR receives the location update request message that SGSN sends, and the SGSN number is preserved, after finishing CS register update process, to SGSN home position update request response message in the IP address of the MME that deletion is wherein preserved.

Step 308:SGSN returns associating RAU/LAU request response to UE.Do not carry the ISR activation tagging in this message, UE receives this message, and preservation relevant information and the ISR function activation that is provided with wherein are masked as the ISR deexcitation.

Fig. 2 and Fig. 3 all be MME and SGSN as under the independent network element situation, the method for incidence relation is set up in existing realization.As the introducing of the combo node of MME/SGSN, be for when UE carries out renewal process, reduce signaling information such as the context that transmits between MME and the SGSN and the signaling traffic load that brings to the position updating process of HSS etc.

For the incidence relation of how setting up between combo node and the MSC/VLR, and relevant signaling procedure etc. does not provide specific implementation as yet in the prior art.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of combined joint to set up the method for incidence relation, can realize setting up incidence relation between combo node and MSC/VLR, and relevant signaling procedure.

Another object of the present invention is to provide a kind of combined joint to set up the system of incidence relation, can realize setting up incidence relation between combo node and MSC/VLR, and relevant signaling procedure.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of combined joint is set up the method for incidence relation, comprising:

When combined joint is set up incidence relation, send to business network element with forming the information of first network element of self and/or the information of second network element;

Business network element select to be preserved the information that receives, and with the information of preserving as related information saving.

Business network element selects to preserve the information that receives:

When described business network element is preserved simultaneously, preserve the information of first network element that receives and/or the information of second network element;

When described business network element is preserved one of them information, preserve the information of first network element that receives or the information of second network element.

Described first network element is the core network element of first wireless access system, and second network element is the core network element of second wireless access system.

The core network element of described first wireless access system be Mobility Management Entity MME and GPRS serving GPRS support node SGSN one of them, the core network element of described second wireless access system is wherein another of MME and SGSN;

Described business network element is moving exchanging center MSC/VLR Visitor Location Register VLR.

The information of described first network element is the IP address of MME and an information in the SGSN number; The information of described second network element is the IP address of MME and another information in the SGSN number.

This method also comprises: described business network element returns current related information to combined joint; Perhaps,

All support two kinds of interfaces and can preserve this two kinds of related informations simultaneously by setting in advance or dispose all business network element that are associated with described combined joint of assurance; Perhaps,

By configuration mode, described combined joint knows that can the business network element that be associated support to preserve simultaneously two kinds of incidence relation information.

When described combined joint transmission updating message is set up incidence relation, comprise that also carrying indication IP address preferentially still is that the preferential information of number is given business network element.

A kind of combined joint is set up the system of incidence relation, comprises combined joint and business network element at least, wherein,

Combined joint is used for when setting up incidence relation, sends to business network element with forming the information of first network element of self and/or the information of second network element;

Business network element is used to select to preserve the information that receives, and with the information of preserving as related information saving.

Described business network element also is used for, and returns current related information to combined joint.

Described business network element also is used for, and carries out alternately with combined network elements according to the related information selection of wherein preserving is wherein a kind of.

Described first network element is the core network element of first wireless access system, and described second network element is the core network element of second wireless access system.

The technical scheme that provides from the invention described above is included in combined joint when setting up incidence relation as can be seen, sends to business network element with forming the information of first network element of self and/or the information of second network element; Business network element select to be preserved the information that receives, and with the information of preserving as related information saving.Pass through the present invention program, know that at combined joint business network element such as MSC/VLR have preserved under the situation that two kinds of related informations and MSC/VLR do not change with combined joint, it is follow-up when UE inserts, combined joint can not carry out the position with MSC/VLR and upgrade reciprocal process, omit and reduced by a position and upgraded reciprocal process, thereby reduced the mutual signaling between combo node and the MSC/VLR, accelerated the processing speed of corresponding flow process; Can support and preserve under the situation of two kinds of related informations at MSC/VLR, can not deexcitation ISR function for combined joint, unlike in the prior art in the RAU process in order to rebuild the SGs association, if judging that the CSFB function has activated SGSN must deexcitation ISR function.And adopt technology of the present invention, SGSN not to need deexcitation ISR function, retract the signaling traffic load that EPS network initiation associated update brings thereby reduced UE.

Description of drawings

Fig. 1 is the network architecture schematic diagram relevant with this paper in existing GSM/UMTS and the EPS network;

Fig. 2 adheres to/upgrades for UE in the prior art unites at the GSM/UMTS network earlier, carries out the flow chart of associated update again at the EPS network;

Fig. 3 adheres to/upgrades for UE in the prior art unites at the EPS network earlier, carries out the flow chart of associated update again at the GSM/UMTS network;

Fig. 4 sets up the method schematic diagram of incidence relation for combined joint of the present invention;

Fig. 5 adheres to/upgrades for UE of the present invention unites at the GSM/UMTS network earlier, carries out the flow chart of the embodiment under the scene of associated update again at the EPS network;

Fig. 6 adheres to/upgrades for UE of the present invention unites at the EPS network earlier, carries out the flow chart of the embodiment under the scene of associated update again at the GSM/UMTS network.

Fig. 7 only supports Gs interface for the present invention at combined joint, and UE unites at the EPS network earlier and adheres to/upgrade, and carries out the flow chart of the embodiment under the scene of associated update again at the GSM/UMTS network.

Fig. 8 only supports the SGs interface for the present invention at combined joint, and UE unites at the GSM/UMTS network earlier and adheres to/upgrade, and carries out the flow chart of the embodiment under the scene of associated update again at the EPS network.

Embodiment

Fig. 4 sets up the method schematic diagram of incidence relation for combined joint of the present invention, as shown in Figure 4, comprising:

Step 400: when combined joint is set up incidence relation, send to business network element with forming the information of first network element of self and/or the information of second network element.

Wherein, first network element is the core network element of first wireless access system, and second network element is the core network element of second wireless access system.One of them is the core network element of first wireless access system for MME and SGSN, and another is the core network element of second wireless access system.At this moment, business network element is meant MSC/VLR.

If MME is the core network element of first wireless access system, so, the information of first network element is the IP address of MME; If SGSN is the core network element of second wireless access system, so, the information of second network element is the SGSN number.

If SGSN is the core network element of first wireless access system, so, the information of first network element is the SGSN number; If MME is the core network element of second wireless access system, so, the information of second network element is the IP address of MME.

Step 401: business network element is preserved the information receive, and with the information of preserving as related information saving.

Wherein, business network element can be to preserve the information that receives according to the selections such as ability of self.The ability of business network element is meant that business network element can preserve the number and the IP address of combined joint simultaneously, perhaps can only preserve the number of combined joint or an information in the IP address.Specifically be exactly, MSC/VLR can preserve SGSN number that combined joint provides and the IP address of MME simultaneously, perhaps can only preserve one of SGSN number that combined joint provides or IP address of MME.

Can further include step 402: business network element returns current related information to combined joint.Under the situation that combined joint needs, receive the business network element of setting up the incidence relation request and feed back current related information to combined network elements, this information can be used for follow-up reciprocal process combined joint and can know according to which kind of incidence relation initiation reciprocal process or the use of other situation.In addition, when follow-up and combined network elements carry out business alternately, receive the business network element of setting up the incidence relation request and carry out alternately with combined network elements according to the related information selection of wherein preserving is wherein a kind of.

At the inventive method, the system that also provides a kind of combined joint to set up incidence relation comprises combined joint and business network element at least, wherein,

Combined joint is used for when setting up incidence relation, sends to business network element with forming the information of first network element of self and/or the information of second network element.

Business network element is used to preserve the information that receives, and with the information of preserving as related information saving.Wherein, further, comprise according to the ability of self and select to preserve the information that receives.

Wherein, first network element is the core network element of first wireless access system, and second network element is the core network element of second wireless access system.One of them is the core network element of first wireless access system for MME and SGSN, and another is the core network element of second wireless access system.

Business network element is MSC/VLR.

Below in conjunction with embodiment the present invention program is described in detail.

Fig. 5 and Fig. 6 are two embodiment of the present invention, in Fig. 5 and embodiment shown in Figure 6, suppose that the combo node is supported in the number and the IP address of carrying the combo node in the location update request message that sends to MSC/VLR, the IP address that SGSN number and MME are preserved in the MSC/VLR support simultaneously.The combo node carries this IP addresses of nodes when setting up incidence relation with MSC/VLR and number is given MSC/VLR; MSC/VLR receives the location update request message that the combo node sends, preserve this IP addresses of nodes and number, follow-up with this combo node mutual (such as, send the CS beep-page message to the combo node) time, MSC/VLR can be undertaken for combo node transmission paging by SGsAP mode or BSSAP+ mode.

Fig. 5 adheres to/upgrades for UE of the present invention unites at the GSM/UMTS network earlier, carries out the flow chart of the embodiment under the scene of associated update again at the EPS network, as shown in Figure 5, comprising:

Step 500:UE by BSS/RNS send unite adhere to or joint route area/location update inquiry information to the SGSN in the combo node.

SGSN in the step 501:combo node carries out this UE and adheres to/upgrade handling process at the GSM/UMTS network PS field, and find corresponding MSC/VLR according to the UE current position information, send position updating request to this MSC/VLR, in this position updating request, carry the number (being the SGSN number) and the combo IP addresses of nodes (being the IP address of MME) of combo node.

Step 502:MSC/VLR preserves the number and the combo IP addresses of nodes of combo node, finish the CS register update flow process of this UE after, the SGSN home position update request response of MSC/VLR in the combo node.

Further, the number and the IP address of can instruct MS C/VLR in this position updating request response message whether having preserved this combo node, when the SGSN that is used for the combo node initiatively sends the situation of message and MME when the combo node in as shown below and receives associated update message to MSC/VLR after setting up incidence relation whether to the basis for estimation of MSC/VLR transmission position renewal etc.

If guarantee that by setting in advance or disposing all MSC/VLR that are associated with combined joint support two kinds of interfaces and can preserve this two kinds of related informations simultaneously, MSC/VLR also can not indicate this information in the position updating request response message.Perhaps, by configuration mode, combined joint can know that can the MSC/VLR that be associated support to preserve simultaneously two kinds of incidence relation information, and at this moment, MSC/VLR also can not indicate this information in the position updating request response message.

SGSN in the step 503:combo node returns to unite to UE and adheres to/the update request response message.

By step 500～step 503, finish the SGSN of UE in the combo node and the combined registering of MSC/VLR, set up the related and SGs incidence relation of Gs between combo node and MSC/VLR, Gs interface and SGs interface activate, the IP address of having preserved SGSN number and MME among the MSC/VLR.

Step 504:UE initiates associating TAU/LAU process, and MME receives associating TAU/LAU request message.

Suppose that this combo node still is the EPS network area service of the current access of UE, it is mutual to finish the UE contextual information by inside story or shared drive mode between MME in the combo node and the SGSN.In this process, the ISR function activation.

MME is according to the information of carrying in the associating TAU/LAU request message, find corresponding MSC/VLR, because UE registers at this MSC/VLR, and MSC/VLR has preserved the IP address of the MME in the combo node, and set up incidence relation between the MME, MME does not initiate to the position of MSC/VLR new technological process more.

MME in the step 505:combo node finishes UE after the renewal of EPS network, return associating TAU/LAU request response to UE, wherein comprise ISR and activate indication, UE receives response message and preserves relevant information, and the ISR function activation that is provided with wherein is masked as the ISR activation.

So far, finished the MME of UE in the combo node and the registration of SGSN, and UE is in the registration of MSC, activates the ISR function, Gs and SGs related information have promptly been preserved in the IP address of having preserved the SGSN number and the MME of combo node among the MSC/VLR among the MSC/VLR.

If MSC/VLR can not support to preserve simultaneously the number and the IP address of combo node, MME in the combo node receives the associated update request message so, carry out the position between needs and the MSC/VLR and upgrade reciprocal process, similar in specific implementation flow process and the prior art, those skilled in the art are easy to obtain, and repeat no more here.

Fig. 6 adheres to/upgrades for UE of the present invention unites at the EPS network earlier, carries out the flow chart of the embodiment under the scene of associated update again at the GSM/UMTS network, as shown in Figure 6, comprising:

Step 600:UE sends CSFB by the MME of eNodeB in the combo node and adheres to or unite the TAU/LAU request message.

Step 601:MME adheres to according to uniting/information of carrying in the update inquiry information, find corresponding MSC/VLR, MME sends location update request message to MSC/VLR, carries the number (being the SGSN number) of combo IP addresses of nodes (being the IP address of MME) and combo node in this location update request message.

Step 602:MSC/VLR preserves the number of combo IP addresses of nodes and combo node, finish the CS registration updating flow process of this UE after, the MME home position update request response of MSC/VLR in the combo node.

Further, in this position updating request response, can whether preserve this combo IP addresses of nodes and/or number by instruct MS C/VLR.Step 502 among similar herein Fig. 5, those skilled in the art are easy to obtain, and repeat no more here.

MME in the step 603:combo node finishes UE after the adhering to/upgrade of EPS network, and returns CSFB to UE and adheres to or unite TAU/LAU request response.

By step 600～step 603, finish the MME of UE in the combo node and the combined registering of MSC, preserved the IP address of MME of combo node and the number of SGSN among the MSC/VLR, promptly preserved SGs and Gs related information among the MSC/VLR.

Step 604:UE sends joint route area/location updating message to the SGSN in the combo node by BSS/RNS.

Suppose that this combo node still is the GSM/UMTS network area service of the current access of UE, it is mutual to finish the UE contextual information by inside story or shared drive mode between SGSN in the combo node and the MME.And because can preserve SGs and Gs incidence relation simultaneously between combo node and the MSC/VLR, UE does not need to initiate associating TAU/LAU process when retracting the registered zone of EUTRAN and rebuilds the SGs association, so in this process, SGSN activation ISR function.

SGSN in the step 605:combo node carries out the renewal handling process of this UE at the GSM/UMTS network PS field, and finds corresponding MSC/VLR according to the UE current position information.

Because in the prior art, the LAI information that MME carries in the location update request message that MSC/VLR sends in the step 601 may be not accurate enough, and SGSN can be known location area information accurately according to current route district information, therefore, in this step, preferably, SGSN can be that SGSN is according to the new LAI information that obtains of route district information by LAI information from the UE that preserves among the MSC/VLR to MSC/VLR transmission location update request message that upgrade.

Need to prove that when specifically implementing, SGSN also can not initiate to the position of MSC/VLR new technological process more because UE this MSC/VLR registered and the combo node in SGSN and set up incidence relation between the MSC/VLR.

The CS that step 606:MSC/VLR carries out this UE is new technological process more, mainly is to upgrade LAI information the response of the SGSN home position update request in the combo node afterwards.

SGSN in the step 607:combo node returns associating RAU/LAU request to UE and responds, and wherein comprises ISR and activates indication, and UE receives response message and preserves relevant information, and the ISR function activation that is provided with wherein is masked as the ISR activation.

So far, finish the MME of UE in the combo node and the combined registering of SGSN and MSC/VLR, it is related with Gs to set up the SGs incidence relation between combo node and MSC/VLR, and SGs interface and Gs activate, what preserve among the MSC/VLR is IP address and the SGSN number of MME, activates the ISR function.

In Fig. 5 and the flow process shown in Figure 6, after between MSC/VLR and combo node, setting up SGs and Gs be related, when MSC/VLR carries out the CS business, when need be with this combined joint mutual, MSC/VLR is according to the related information of wherein preserving, and just can select to carry out alternately based on SGsAP mode (using the combo IP addresses of nodes) or BSSAP+ mode (number of use combo node) mode and combined joint.

Wherein, when selecting, MSC/VLR can according to the signaling situation of dual mode (such as, whether signaling break-make, signaling traffic load), perhaps according to traffic type information, and the combinations thereof situation is selected, can realize load balancing like this, and MSC/VLR can be undertaken alternately by the BSSAP+ mode according to the SGSN number and the MME of the combo node of wherein preserving, thereby make in the reciprocal process of MME in the combo node and MSC/VLR, realize the making full use of of the resource disposed (such as, the MME of combo node can utilize the resource of having disposed between SGSN and the MSC/VLR to carry out alternately with MSC/VLR when introducing CSFB), can solve situations such as signaling congestion occur again and cause the problem that occurs, and the signaling disconnection (such as, under the situation that the IP mode cannot be used, can utilize transmission based on MTP) situation.

And from Fig. 5, flow process shown in Figure 6 and describe the beneficial effect that the inventive method as can be seen also brings and be:

Know that at combined joint MSC/VLR has preserved under the situation that two kinds of related informations and MSC/VLR do not change with combined joint, it is follow-up when UE inserts, combined joint can not carry out the position with MSC/VLR and upgrade reciprocal process, thereby omit and reduced position updating process one time, reduce the mutual signaling between combo node and the MSC/VLR, accelerated the processing speed of corresponding flow process.

Can support and preserve under the situation of two kinds of related informations at MSC/VLR, can not deexcitation ISR function for combined joint, unlike in the prior art in the RAU process in order to rebuild the SGs association, if judging that the CSFB function has activated SGSN must deexcitation ISR function.And adopt technology of the present invention, SGSN not to need deexcitation ISR function, thereby having reduced UE retracts the EPS network and initiates signaling traffic load that associated update brings etc., can fully obtain the beneficial effect that the ISR technology is brought.

Further, when the invention process, when combined joint sends location update message to MSC/VLR, not only carry the number of combo IP addresses of nodes and combo node, can also further carry indication IP address (SGsAP mode) preferentially still is that the preferential information of number (BSSAP+ mode) is given MSC/VLR.Like this, MSC/VLR preserves above-mentioned information and is used for selecting when mutual with the combo node.Its handling process and Fig. 5 and flow process shown in Figure 6 are similar, and those skilled in the art are easy to draw, and repeat no more here.

In addition, when the invention process, MME in the combo node or SGSN are when setting up incidence relation to MSC/VLR transmission location update message, can whether support SGsAP or BSSAP+ according to the MSC/VLR that selects, perhaps all support for two kinds, the combo IP addresses of nodes is carried in selection, and perhaps one of them or two of the number of combo node give MSC/VLR.Follow-up MSC/VLR selects a kind of according to the incidence relation of wherein preserving and the combo node carries out alternately.Such as, when the MME in the combo node need send location update message to MSC/VLR, if MME judges that according to information such as configurations MSC/VLR only supports the BSSAP+ mode, MME carries out according to the BSSAP+ mode when sending location update message so, and only carries the number of combo node to MSC/VLR.Its flow process and Fig. 5 and flow process shown in Figure 6 are similar, and those skilled in the art are easy to draw, and repeat no more here.

The present invention program can also be applied to only support between combined joint and the MSC/VLR under the situation of Base Station System Application Part+, such as, when the CSFB function realizes and dispose, do not support the SGsAP agreement between MME and the MSC/VLR as yet, at this moment can not realize audio call etc., MME in the combined joint can utilize between SGSN in the combined joint and the MSC/VLR based on setting up incidence relation and carry out business between the Gs interface of BSSAP+ and the MSC/VLR, thereby make business such as audio call to realize.Fig. 7 is the present invention when being applied to above-mentioned scene, and UE unites at the EPS network earlier and adheres to/upgrade, and carries out the schematic flow sheet of associated update again at the GSM/UMTS network.As shown in Figure 7, comprising:

Step 700:UE sends CSFB by the MME of eNodeB in the combo node and adheres to or unite the TAU/LAU request message.

MME in the step 701:combo node adheres to according to uniting/information of carrying in the update inquiry information, find corresponding MSC/VLR, MME in the combo node utilizes the Gs interface of combined joint to send location update request message to MSC/VLR, carries the number (being the SGSN number) of combo node in this location update request message.

Step 702:MSC/VLR preserves the number of combo node, finish the CS registration updating flow process of this UE after, MSC/VLR is to the response of combo node home position update request, the MME in the combo node obtains the position updating request response message.

MME in the step 703:combo node finishes UE after the adhering to/upgrade of EPS network, and returns CSFB to UE and adheres to or unite TAU/LAU request response.

By step 700～step 703, finish the registration of the MME of UE in the combo node, in the registration of MSC/VLR, preserved the number of the SGSN of combo node among the MSC/VLR, promptly preserved the Gs related information among the MSC/VLR.

After this, MSC/VLR just can utilize this incidence relation that the CS paging of business such as audio call is sent to combined joint, thereby the MME in the combo node can obtain this paging information, paging UE, thus make voice call service to finish.

Follow-up, when UE moved to the GSM/UMTS network insertion, it was similar to unite among the process of RAU/LAU and Fig. 6 step 604～step 607, and those skilled in the art are easy to draw, and repeat no more here.

The present invention is applied to only support between combined joint and the MSC/VLR under the situation of Base Station System Application Part+, UE unites at the GSM/UMTS network earlier and adheres to/upgrade, the flow process of carrying out associated update at the EPS network is only carried in the location update message that sends to MSC/VLR at combined joint the number (SGSN number) of combo node again, other and Fig. 5 are similar, those skilled in the art are easy to draw, and repeat no more here.

The present invention can also be applied to only support between combined joint and the MSC/VLR under the situation of SGsAP, because SGsAP and Base Station System Application Part+ function and principle are similar, make the realization of combined joint simplify relatively like this, and thereby the SGSN in the combined joint utilizes this method can realize some functions, such as, the SGSN in the combined joint can be based on transmitting content of short message between this realization and the MSC/VLR.Fig. 8 is the present invention when being applied to above-mentioned scene, and UE unites at the GSM/UMTS network earlier and adheres to/upgrade, and carries out the schematic flow sheet of associated update again at the EPS network.As shown in Figure 8, comprising:

Step 800:UE by BSS/RNS send unite adhere to or joint route area/location update inquiry information to the SGSN in the combo node.

SGSN in the step 801:combo node carries out this UE and adheres to/upgrade handling process at the GSM/UMTS network PS field, and find corresponding MSC/VLR according to the UE current position information, and utilize the SGs interface to send position updating request to this MSC/VLR, in this position updating request, carry combo IP addresses of nodes (being the IP address of MME).

Step 802:MSC/VLR preserves the combo IP addresses of nodes, finish the CS register update flow process of this UE after, MSC/VLR is to the response of combo node home position update request, the SGSN in the combo node obtains the position updating request response.

SGSN in the step 803:combo node returns to unite to UE and adheres to/the update request response message.

By step 800～step 803, finish the SGSN of UE in the combo node and the combined registering of MSC/VLR, between combo node and MSC/VLR, set up the SGs incidence relation, the SGs interface activates, the IP address of having preserved the MME in the combo node among the MSC/VLR.

After this, MSC/VLR just can utilize this incidence relation that the CS paging of business such as audio call is sent to combined joint, and the SGSN in the combo node is according to this paging information paging UE that obtains, thereby has finished voice call service.And MSC/VLR can utilize this interface that content of short message is delivered to combined joint, makes that the SGSN in the combo node can utilize the short message transfer mechanism between existing and the UE to receive and dispatch short message.

Follow-up, when UE moves to E-UTRAN when inserting, uniting the process of TAU/LAU and Fig. 5, to plant step 504～step 505 similar, and those skilled in the art are easy to draw, and repeat no more here.

The present invention is applied to only support between combined joint and the MSC/VLR under the situation of SGs interface, UE unites at the GSM/UMTS network earlier and adheres to/upgrade, again the flow process of carrying out associated update at the EPS network in the location update message that sends to MSC/VLR at combined joint, only carry the combo IP addresses of nodes (the IP address of MME) other and Fig. 6 similar, those skilled in the art are easy to draw, and repeat no more here.

In sum, utilize the present invention program, guaranteed that not only functions such as the combined registering of existing C SFB and GSM/UMTS network C S/PS and paging normally realize, and transmit and preserve under the situation of SGs and Gs incidence relation information can supporting, reduce the position and upgraded reciprocal process, keep the ISR in associating RAU/LAU process, to activate, reduced UE and retracted the EPS network and need upgrade the signaling brought etc., fully obtained the beneficial effect that the ISR technology is brought.And make the MME in the combo node can utilize the resource and the MSC/VLR that have disposed between SGSN and the MSC/VLR to communicate and realize business, improve resource utilization and increased deployment flexibility etc.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1. a combined joint is set up the method for incidence relation, it is characterized in that, comprising:

2. method according to claim 1 is characterized in that, business network element is selected to preserve the information that receives and is:

3. method according to claim 1 and 2 is characterized in that, described first network element is the core network element of first wireless access system, and second network element is the core network element of second wireless access system.

4. method according to claim 3, it is characterized in that, the core network element of described first wireless access system be Mobility Management Entity MME and GPRS serving GPRS support node SGSN one of them, the core network element of described second wireless access system is wherein another of MME and SGSN;

5. method according to claim 4 is characterized in that, the information of described first network element is the IP address of MME and an information in the SGSN number; The information of described second network element is the IP address of MME and another information in the SGSN number.

6. method according to claim 1 is characterized in that, this method also comprises: described business network element returns current related information to combined joint; Perhaps,

7. method according to claim 5 is characterized in that, when described combined joint transmission updating message is set up incidence relation, comprises that also carrying indication IP address preferentially still is that the preferential information of number is given business network element.

8. a combined joint is set up the system of incidence relation, it is characterized in that, comprises combined joint and business network element at least, wherein,

9. system according to claim 8 is characterized in that described business network element also is used for, and returns current related information to combined joint.

10. system according to claim 8 is characterized in that described business network element also is used for, and carries out alternately with combined network elements according to the related information selection of wherein preserving is wherein a kind of.

11. according to Claim 8,9 or 10 described systems, it is characterized in that described first network element is the core network element of first wireless access system, described second network element is the core network element of second wireless access system.

12. system according to claim 11, it is characterized in that, the core network element of described first wireless access system be Mobility Management Entity MME and GPRS serving GPRS support node SGSN one of them, the core network element of described second wireless access system is wherein another of MME and SGSN;