CN102932774B - A kind of method and HLR suppressing T-CSI business - Google Patents
A kind of method and HLR suppressing T-CSI business Download PDFInfo
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- CN102932774B CN102932774B CN201110232005.3A CN201110232005A CN102932774B CN 102932774 B CN102932774 B CN 102932774B CN 201110232005 A CN201110232005 A CN 201110232005A CN 102932774 B CN102932774 B CN 102932774B
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Abstract
The invention discloses a kind of method suppressing T-CSI business, comprise the following steps: 1) HLR receive GMSC send SRI message; 2) HLR is according to described SRI message, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory; 3) if judge that described number altogether should be selected to answer the call in IMS domain, then HLR suppresses T-CSI, and returns the SRI_Ack message of not carrying T-CSI business information to GMSC.Although present invention optimizes HLR in 2G/3G network when during territory is selected altogether number field select the waste of signaling when landing only in IMS domain and to land in CS territory but business is signaling when IMS domain triggers wastes, improve network performance.
Description
Technical field
The present invention relates to the service trigger method in the communications field, especially a kind of method and HLR suppressing T-CSI business.
Background technology
In existing 2G/3G network, general CS territory and PS territory are respectively used to voice-bearer and data service.And LTE or the 4G network in future only has PS territory, no longer comprise CS territory, so the core net (EPC network) by LTE carries by the speech business in future, but EPC network itself does not possess the ability of exchange of speech and route, need to bear full-service by the IP multimedia system IMS of framework on EPC network.In the process of 2G/3G to 4G evolution, 2G/3G network and LTE network will be deposited within a very long time.Most operation commercial city, the whole world will have multiple exchange of speech networks for a long time, in order to the consistency of the continuity and Consumer's Experience that ensure user resources, has proposed common numbering plan as solution.
So-called number is altogether the scheme sharing same set of code number when operator exists multiple exchange of speech networks, and the Subscriber Number that namely cellphone subscriber can continue to retain original 2G/3G also uses in the lte networks.Code number identical in common numbering plan can be resident in multiple core network at the same time or separately.Such as, user is signing CS territory and IMS domain simultaneously, and uses duplicate numberses in these two territories, and these users are just called as common number user, and require to use can in the terminal of different wireless network logins or attachment for number user altogether.Wherein, on the time point that certain is determined, only the common number user of business is used then to be called single standby subscriber at a network registry or attachment.
For the user of common number, there is the problem that called territory is selected.Such as, CS territory and IMS domain are existed to the user of number altogether, need to solve the land network selection problem of called subscriber in CS territory and IMS domain.
MAP (MobileApplicationProtocol) agreement is the interface protocol between GMSC and HLR.Fig. 1 is the normal process that in 2G/3G network, CS gets in territory user profile.As shown in Figure 1, the mobile switching centre GMSC in CS territory, when receiving session request, uses SRI (MAP_SEND_ROUTING_INFORMATION) message in MAP to be obtained business information and the route code of called subscriber to the Visited Location Registor VLR of called subscriber visited place by attaching position register HLR.HLR is after receiving SRI message, the callee side CAMEL-Subscription-Information T-CSI (TerminatingCAMELSubscriptionInformation) of user can be judged, if user have registered T-CSI business, then HLR obtains positional information and the status data of called subscriber by sending " MAP_PROVIDE_SUBSCRIBER_INFORMATION " message.HLR sends to VLR the roaming number that MAP_PROVIDE_ROAMING_NUMBER obtains user, then, the T-CSI of user and route code are returned to GMSC by SRIAck message by HLR, and GMSC triggers T-CSI business by T-CSI, and HLR also can inquire about and once return once result.
Wherein, HLR receives the internal processes after SRI message as shown in Figure 2.According to existing standard, the MAP message processing module in HLR is after receiving SRI message, and first check the parameter legitimacy in SRI message, identification parameter indicates, and then gives upper application module and to be correspondingly processed logic.In the SRI message of giving upper application module process, generally can carry T-CSI business information, therefore upper application module can carry out the process of CSI CAMEL-Subscription-Information when treatment S RI message; The result of process returns to MAP message processing module, generates SRIAck message and returns to GMSC, generally comprise MSRN routing iinformation in the message returned.
In LTE relevant criterion, it is control by ICS is unified in IMS domain that the mono-standby related service of regulation LTE triggers, and CSCF triggers AS business by iFC.Consequent problem is: when the mono-standby subscriber of LTE is in the registration of 2G/3GCS territory, according to LTE network standard, session will be arrived and be carried out business triggering in IMS domain, finally returns to CS territory again and lands, and this mode exists the roundabout and network delay of very large signaling.And when same user registers in IMS domain, if when initiating a called calling for this user in CS territory, HLR carries out territory and selects Logic judgment, because user registers in IMS domain, the result of current selection can be landed in IMS domain, and current session will at IMS domain trigger business.According to 3GPP standard.Therefore when user in CS territory to single standby subscriber initiation session in IMS domain time, for GMSC, this is a CS territory session, walks normal GMSC session flow process, and therefore GMSC can take the balance amount information at family to HLR, and triggers these business according to T-CSI to SCP.But HLR lands in IMS domain according to being total to number field selection result user, and GMSC can be indicated to be routed to IMS by gateway exchange.The SRI request that HLR also can send according to GMSC returns Service Trigger Information.At this moment, for GMSC, can triggered as normal T-CSI business, and will talk about and be routed to IMS domain, session still can trigger the business AS of IMS domain in IMS domain, the business information obviously triggered in CS territory and flow process have slatterned.
Summary of the invention
For the problems referred to above, the present invention will provide a kind of method and the HLR that suppress T-CSI business, and to avoid when single standby subscriber is registered in IMS domain, what initiated by CS is that the signaling that causes of called operation flow is wasted with described single standby subscriber.
For achieving the above object, one aspect of the present invention provides a kind of method suppressing T-CSI business, comprises the following steps:
1) HLR receives the SRI message that GMSC sends;
2) HLR is according to described SRI message, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory;
3) if judge that described number altogether should be selected to answer the call in IMS domain, then HLR suppresses T-CSI, and returns the SRI_Ack message of not carrying T-CSI business information to GMSC.
Wherein, described number user is altogether the single standby subscriber in IMS domain registration.
Wherein, described HLR suppresses T-CSI to cancel T-CSI business information in the SRI information submitted to upper application module in MAP message processing module or cancel T-CSI business information in the SRIAck information that returns to MAP message processing module in upper application module.
In section Example of the present invention, cancel T-CSI business information in the described SRI information submitted to upper application module in MAP message processing module can be implemented as: judging that described number altogether should be selected after IMS domain answers the call, skip CSI_CHECK logic, submit to directly to upper application module and do not carry T-CSI business information SRI information.In this manner, MAP message processing unit is no longer to upper strata application module requests T-CSI.Compared with prior art, upper application module does not reexamine T-CSI CAMEL-Subscription-Information, and it returns in the SRIAck message of MAP message processing module and just no longer carries T-CSI business information.
In another part embodiment of the present invention, describedly in the SRIAck information that upper application module returns to MAP message processing module, cancel T-CSI business information can be implemented as: when upper application module returns SRIAck message to MAP message processing module, T-CSI business information is cancelled in described response message, do not comprise T-CSI in the SRIAck message that HLR is returned to GSMC, and replace the MSRN route code information in described SRIAck message by IMSRN route code information.This process does not affect the existing business processing flow of HLR, only returns in upper application module in the SRIAck message of MAP and cancels T-CSI.Wherein, the IMSRN originally indicating the MSRN being routed to other MSC to be instructed to be routed to IMS domain replaces, and after such GSMC receives SRIAck message, calling only will be routed to IMS domain.
Wherein, described judgement specifically can being comprised by answering territory of called subscriber: HLR asks IMS domain log-on message and the terminal capability of called subscriber to HSS by query message, HLR judges to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.
According to a further aspect in the invention, present invention also offers a kind of HLR that can suppress T-CSI business, it is characterized in that, described HLR comprises: MAP message processing module, for receiving between HLR and GMSC and sending MAP message; Module is selected in territory, for according to the SRI message received, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory; Upper application module, the SRI message submitted to for the treatment of MAP message processing module is gone forward side by side after row relax, returns SRIAck message to MAP message processing module; T-CSI suppresses logic module, for cancel T-CSI business information in the SRI information submitted to upper application module in MAP message processing module or return to MAP message processing module in upper application module SRIAck information in cancel T-CSI business information.
Wherein, described T-CSI suppresses logic module also for replacing the MSRN route code information in described SRIAck message by IMSRN route code information.
Wherein, described territory selects module also to comprise: query unit, for asking IMS domain log-on message and the terminal capability of called subscriber to HSS; Determining unit, for judging to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.
The present invention be directed in the environment coexisted at 2G/3G network and LTE network, single standby subscriber is when IMS domain is registered, and when becoming the called subscriber made a call by CS territory, suppress the step of T-CSI by increasing in the SRI message processing procedure of HLR inside and increase corresponding functional module in hlr, although successfully optimize HLR in 2G/3G network when during territory is selected altogether number field select the waste of signaling when landing only in IMS domain and to land in CS territory but business is signaling when IMS domain triggers wastes, improve network performance.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is after in prior art, CS receives session request, and GMSC gets the standard signaling process of called user information to VLR by HLR;
Fig. 2 represent HLR receive SRI message after internal processes;
Fig. 3 is according to the flow chart suppressing a most preferred embodiment of the method for T-CSI business of the present invention;
Fig. 4 is according to the system configuration schematic diagram that can suppress T-CSI business HLR of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Before describing the present invention in detail, some terms that the present invention relates to first are explained.The present invention includes claims and specification in interior all application documents, single standby subscriber refers in the environment coexisted at 2G/3G network and LTE network, only also only can in the common number user terminal of a Web vector graphic business in a registers kernel network or attachment in the moment that certain is determined.Described altogether number user refers to the user having a unified mobile terminal number in multiple exchange of speech networks of operator.
The method of suppression T-CSI provided by the invention proposes for such problem: in the environment that 2G/3G network and LTE network coexist, single standby subscriber is registered in the IMS domain of LTE network, now initiate calling in the CS territory of 2G/3G network to described single standby subscriber by certain user, according to existing 3GPP standard, GMSC will send MAP-SRI message to HLR, is selected that called subscriber's land territory return routing iinformation to GMSC by HLR.Therefore, in embodiment described below, described called number user altogether refers to the single standby subscriber in IMS network registration.Method of the present invention is applicable to the called calling for described single standby subscriber initiated in CS territory.
Improvements over the prior art of the present invention are just in the flow process of HLR treatment S RI message, add the step suppressing T-CSI, and add the functional module suppressing T-CSI in hlr.To the HLR of T-CSI function be suppressed to be described in detail suppressing the method for T-CSI and having respectively below.
According to an aspect of the present invention, provide a kind of method suppressing T-CSI business, as shown in Figure 3, comprise the following steps:
1.HLR receives the SRI message that GMSC sends.
When user makes a call in CS territory, Calling Side GMSC will send SRI (MAP_SEND_ROUTING_INFORMATION) message according to MAP to HLR, require that HLR indicates follow-up routing iinformation.This is standard step of the prior art.
SendRoutingInformation, be that Calling Side GMSC sends the request of " requiring that HLR indicates follow-up routing iinformation " to called HLR, Chinese can be named " acquisition routing iinformation "
2.HLR, according to described SRI message, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory.
3GPP defines the process that called territory is selected, in TS23.221,23.401,23.292, have part to describe.User initiates a road session in CS territory, and logic is selected in the territory that this session is triggered in HLR by MAP message SRI.HLR asks IMS domain log-on message and the terminal capability of called subscriber to HSS by query message, HLR obtains the log-on message in CS territory.Territory selects logic to judge to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.Those skilled in the art will be understood that HLR asks the IMS domain log-on message of called subscriber and this signaling process of terminal capability to belong to prior art by query message to HSS.Wherein, the log-on message that HLR obtains CS territory generally can be understood as HLR in the prior art and obtains the log-on message of called subscriber in CS territory to VLR, and this procedure body now in FIG.HLR also self can store the log-on message of user in CS territory.How HLR obtains user belongs to prior art at the log-on message in CS territory, and the present invention only relates to the use of log-on message.In addition, those skilled in the art should be able to, judge to determine being answered territory and can realizing in the prior art of user according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability, just no longer describe in detail secondary.
3. if judge that described number altogether should be selected to answer the call in IMS domain, then HLR suppresses T-CSI, and returns the SRIAck message of not carrying T-CSI business information to GMSC.
By the analysis to MAP and altogether number flow process, we find, for common number family, if the result that territory is selected answers the call in IMS domain, the business so in CS territory just there is no need to trigger.Therefore in an embodiment of the present invention, HLR is when receiving the SRI message that GMSC sends, first carry out common number field to select to judge, if judge that described number altogether should be selected to answer the call in IMS domain, then suppress T-CSI, finally reach in SRIAck (MAP_SEND_ROUTING_INFORMATION_ack) message making to return to GMSC and do not carry T-CSI, trigger unnecessary intelligent network business to avoid GMSC.Wherein, T-SCI is the intelligent network business CAMEL-Subscription-Information stored in hlr, is used to refer to GMSC how triggering intelligent network service.SRI_ack is a signaling of MAP, is the response to SRI message, and the inside comprises " concrete route instruction ", generally also can carry the T-CSI instruction being used to refer to triggering intelligent network service in this message.In an embodiment of the present invention, T-CSI is suppressed to instigate HLR to return in the SRIAck message of GMSC no longer to carry T-SCI information, thus GMSC just no longer triggering intelligent network service.
In addition, if territory select result be can answer the call in CS territory, HLR then conventionally in related procedure trigger corresponding service logic.Owing to not relating to the suppression to T-CSI in this situation, therefore this part content does not belong to scope of the present invention.
In existing HLR, MAP message processing module is responsible for receiving and sending the logical block of MAP message in HLR.After HLR receives SRI message, SRI (Send_Routing_Info) information can be submitted to the upper application module processing messages of HLR by MAP message processing module according to MAP, after processing all flow processs, all results are inserted SRIAck (Send_Ronting_Info_ack) by upper application module, then return to GMSC by MAP message processing module.In the present invention, according to carrying out the difference suppressing T-CSI opportunity, the two kinds of embodiments suppressing T-CSI before and after SRI being submitted to upper application module process are each provided.
In section Example of the present invention, when judging that called subscriber after IMS domain answers the call, should skip T-CSI and check (CSI_CHECK) logic, submitting to directly to upper application module and not carrying T-CSI business information SRI information.In this manner, HLR is no longer to its upper application module request T-CSI relevant information.Therefore, return to after upper application module process in the SRIAck message of MAP message module and just no longer include T-CSI information.In HLR to the processing procedure that SRI message is complete be: MAP message processing module receives SRI message; This session triggers territory and selects logic, and what territory selected module to judge called common number user can be answered territory; When judge called should select to answer in IMS domain time, skip CSI_CHECK logic, MAP message processing module submits directly to upper application module the SRI information of T-CSI business information of not carrying to.Upper application module processes SRI message, processes backward MAP message processing module and returns SRIAck message.T-CSI business information is not carried in described SRIAck message.
In another part embodiment of the present invention, when judging that called subscriber should after IMS domain answers the call, first SRI information is submitted to upper application module process, then return in upper application module in the result of MAP message processing module and T_CSI information is eliminated, generate the SRIAck message of not carrying T_CSI information.Meanwhile, in this SRIAck message, also add the routing iinformation IMSRN going to IMS domain.Now, in HLR to the processing procedure that SRI message is complete be: MAP message processing module receives SRI message; This session triggers territory and selects logic, and what territory selected module to judge called common number user can be answered territory; Meanwhile, SRI information is submitted to upper application module process according to agreement by MAP message processing module; When judge called should select to answer in IMS domain time, return in upper application module in the response SRIAck of MAP message processing module and cancel T-CSI business information, and replace the MSRN information in SRIAck by IMSRN information.Last MAP message processing module will not carry T-CSI business information but the SRIAck with IMSRN information returns to GMSC.Wherein, what the called altogether number of Logic judgment was selected in territory can be relatively independent by the process of answering the process in territory and MAP and SRI message to be submitted to upper application module process, in no particular order smoothly.
Those skilled in the art will be understood that, no matter be submit in the SRI of upper application module in MAP message processing module to suppress T-CSI, or return in the result of MAP message processing module in upper application module and suppress T-CSI, they are all based on identical design, are all finally MAP message processing module to be sent in the SRIAck message of GMSC do not carry T-CSI business information.
According to a further aspect in the invention, a kind of HLR that can suppress T-CSI is additionally provided, as shown in Figure 4.Described HLR comprises: MAP message processing module, for receiving between HLR and GMSC and sending MAP message; Module is selected in territory, for according to the SRI message received, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory; Upper application module, the SRI message submitted to for the treatment of MAP message processing module is gone forward side by side after row relax, returns SRIAck message to MAP message processing module; T-CSI suppresses logic module, for cancel T-CSI business information in the SRI information submitted to upper application module in MAP message processing module or return to MAP message processing module in upper application module SRIAck information in cancel T-CSI business information.
Wherein, described T-CSI suppresses logic module also for replacing the MSRN route code information in described SRIAck message by IMSRN route code information.
In another embodiment of the invention, described territory selects module also to comprise: query unit, for asking IMS domain log-on message and the terminal capability of called subscriber to HSS; Determining unit, for judging to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.
Those skilled in the art will be understood that the module also comprising in HLR and realize other functions.But the improvement of the present invention to HLR is only limitted to the above-mentioned module involved by the inventive method, these modules provide the method realizing the present invention and suppress T-CSI business.Therefore, for other modules in HLR, the present invention is not described in detail.
Claims (9)
1. suppress a method for T-CSI business, comprise the following steps:
1) HLR receives the SRI message that the GMSC of calling subscriber in CS territory sends;
2) HLR is according to described SRI message, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory;
3) if judge that described number altogether should be selected to answer the call in IMS domain, then HLR suppresses T-CSI, and returns the SRI_Ack message of not carrying T-CSI business information to GMSC.
2. method according to claim 1, is characterized in that, described called number user is altogether the single standby subscriber in IMS domain registration.
3. method according to claim 2, it is characterized in that, cancel T-CSI business information in described HLR suppress T-CSI to be included in SRI information that MAP message processing module submits to upper application module or cancel T-CSI business information in the SRIAck information that returns to MAP message processing module in upper application module.
4. method according to claim 3, it is characterized in that, cancel T-CSI business information in the described SRI information submitted to upper application module in MAP message processing module specifically to comprise: judging that described number altogether should be selected after IMS domain answers the call, skip CSI_CHECK logic, submit to directly to upper application module and do not carry T-CSI business information SRI information.
5. method according to claim 3, it is characterized in that, describedly in the SRIAck information that upper application module returns to MAP message processing module, cancel T-CSI business information specifically comprise: when upper application module returns SRIAck message to MAP message processing module, cancel T-CSI business information in the response message, do not comprise T-CSI in the SRIAck message that HLR is returned to GSMC, and replace the MSRN route code information in described SRIAck message by IMSRN route code information.
6. the method according to any one of claim 1-5, it is characterized in that, described judgement specifically can being comprised by answering territory of called subscriber: HLR asks IMS domain log-on message and the terminal capability of called subscriber to HSS by query message, HLR judges to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.
7. can suppress a HLR for T-CSI business, it is characterized in that, described HLR comprises:
MAP message processing module, for receiving and sending MAP message between HLR and GMSC;
Module is selected in territory, for the SRI message sent according to the GMSC of the calling subscriber received in CS territory, triggers the territory performing called number user altogether and selects, judge that called subscriber's can be answered territory;
Upper application module, the SRI message submitted to for the treatment of MAP message processing module is gone forward side by side after row relax, returns SRIAck message to MAP message processing module;
T-CSI suppresses logic module, for cancel T-CSI business information in the SRI information submitted to upper application module in MAP message processing module or return to MAP message processing module in upper application module SRIAck information in cancel T-CSI business information.
8. HLR according to claim 7, is characterized in that, described T-CSI suppresses logic module also for replacing the MSRN route code information in described SRIAck message by IMSRN route code information.
9. HLR according to claim 8, is characterized in that, described territory selects module also to comprise:
Query unit, for asking IMS domain log-on message and the terminal capability of called subscriber to HSS;
Determining unit, for judging to determine that user's is answered territory according to the log-on message of called subscriber in IMS domain and CS territory, terminal capability.
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| WO2009155285A1 (en) * | 2008-06-20 | 2009-12-23 | Interdigital Patent Holdings, Inc. | Handling mobile terminated circuit-switched calls using an 802.21 media independent handover (mih) framework |
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| CN101330646A (en) * | 2007-08-01 | 2008-12-24 | 中兴通讯股份有限公司 | Method and system for implementing redirection business |
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