CN101106810B - Method for capturing caller subscription information upon cross-network roaming - Google Patents

Abstract

The invention relates to a method for obtaining calling subscription information during roaming among networks, in which GMSC (Gateway Mobile Services Switching Center) of the home network establishes an expanded 'MAP-RESTORE-DATA-REQ' message by replacing IMSI (International Mobile Subscriber Identification) number in a standard 'MAP-RESTORE-DATA-REQ' message with MSISDN (Mobile Station Integrated Services Digital Network) number of the calling user, and queries the calling subscription from HLR (home location register) of the home network.

Description

The method of capturing caller subscription information upon cross-network roaming

Technical field

Relate generally to mobile communication of the present invention, the GMSC (gateway MSC) that is specifically related to home network when carrying out internetwork roaming obtains the method for calling subscriber's CAMEL-Subscription-Information.

Background technology

At present, in the mobile network, the prepaid user does not realize internetwork roaming, so the prepaid user can't carry out call business under roaming state.When the prepaid user roams into other carrier networks, if visited network will be called out route and return the GMSC that belongs to network, this GMSC only carries out the called number analysis, calling number is not analyzed, therefore can't obtain any business information of calling subscriber, can not judge that this user is prepaid user or postpaid service user, also just can not deduct fees according to calling subscriber's O-CSI (beginning is exhaled CAMEL-Subscription-Information) and SCP (service control point).

Summary of the invention

For addressing the above problem, the present invention proposes a kind of when the calling subscriber carries out internetwork roaming the GMSC of home network obtain the method for Originating CAMEL Subscription Information, wherein, the international comprehensive service digital net number MSISDN of the calling subscriber's that from incoming call, obtains of GMSC travelling carriage; This GMSC is by the IMSI (international mobile subscriber identity) in MSISDN (the international comprehensive service digital net number of travelling carriage) replacement standard " MAP-RESTORE-DATA-REQ " message of using the calling subscriber, construct expansion " MAP-RESTORE-DATA-REQ " message, and utilize this message to the HLR of home network (attaching position register) inquiring calling CAMEL-Subscription-Information.Wherein, describedly may further comprise the steps to the HLR of home network inquiring calling CAMEL-Subscription-Information: described GMSC should expand " MAP-RESTORE-DATA-REQ " message and send to described HLR; Described HLR is according to the MSISDN retrieve user information in this expansion " MAP-RESTORE-DATA-REQ " message, and structure standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message sends to described GMSC, and the mobile network who comprises calling subscriber's MSISDN and calling subscriber in this standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message strengthens the customized application CAMEL Subscription Information of logic; After described GMSC receives this standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message, return standard " MAP-INSERT-SUBSCRIBER-DATA-RSP " message to described HLR; And after described HLR receives this standard " MAP-INSERT-SUBSCRIBER-DATA-RSP " message, return expansion " MAP-RESTORE-DATA-RSP " message to described GMSC.

The method according to this invention, when the prepaid user carried out internetwork roaming, the GMSC of home network can obtain Originating CAMEL Subscription Information easily, was prepaid user or postpaid service user thereby can judge this user.

Description of drawings

Fig. 1 shows the flow process of obtaining Originating CAMEL Subscription Information according to the GMSC of home network of the present invention.

Embodiment

For the process that obtains Originating CAMEL Subscription Information, there is not corresponding standard in present 3GPP (the third generation partner plan) standard. in the MAP of standard (MAP) agreement, the form of MAP-RESTORE-DATA-REQ (MAP request for recovery data) message is as shown in table 1 below, and it is according to being inquired about by the user's that inquired about IMSI.

The form of table 1 standard MAP-RESTORE-DATA-REQ message

Parameter name	Request	Indication	Response	Confirm
					Call ID (identifier)	M	M(＝)	M(＝)	M(＝)
IMSI	M	M(＝)
					LMSI (local mobile identification number)	U	C(＝)
CAMEL (mobile network strengthens the customized application of the logic) stage of supporting	C	C(＝)
					SoLSA (supporting the regional businesses zone) supports designator	C	C(＝)
IST (immediate service termination) supports designator	C	C(＝)
					The Super-Charger that supports in the network entity of serving	C	C(＝)
Support long FTN (transferred number)	C	C(＝)
					LCS (location service) authority set of supporting	C	C(＝)
HLR number			C	C(＝)
					The CAMEL 4CSI (CAMEL-Subscription-Information) that provides	C	C(＝)
The unreachable sign of MS (travelling carriage)			C	C(＝)
					User's mistake			C	C(＝)
Supplier's mistake				O

Wherein, " M " expression content of parameter is an essential option; " U " expression content of parameter is the service supplier option; " C " expression content of parameter is the service-user option; " O " expression content of parameter is to have ready conditions to use.

But the GMSC of present home network does not have user's IMSI information, has only the calling subscriber's who obtains from incoming call MSISDN.

According to the present invention, the GMSC of home network can adopt expansion as shown in table 2 below " MAP-RESTORE-DATA-REQ " message to carry out Originating CAMEL Subscription Information inquiry, wherein uses calling subscriber " MSISDN " to replace " IMSI " in standard as shown in table 1 " MAP-RESTORE-DATA-REQ " message.

The form of table 2 expansion MAP-RESTORE-DATA-REQ message

Parameter name	Request	Indication	Response	Confirm
					Call ID	M	M(＝)	M(＝)	M(＝)
MSISDN	M	M(＝)
					LMSI	U	C(＝)
The CAMEL stage of supporting	C	C(＝)
					SoLSA supports designator	C	C(＝)
IST supports designator	C	C(＝)
					The Super-Charger that supports in the network entity of serving	C	C(＝)
Support long FTN	C	C(＝)
					The LCS authority set of supporting	C	C(＝)
HLR number			C	C(＝)
					The CAMEL 4CSI that provides	C	C(＝)
The unreachable sign of MS			C	C(＝)
					User's mistake			C	C(＝)
Supplier's mistake				O

Specifically, according to the present invention, as shown in Figure 1, when the prepaid user roams into other carrier networks, if visited network will be called out route and return the GMSC that belongs to network, then this GMSC sends to this message the HLR of home network then according to calling subscriber's MSISDN structure expansion " MAP-RESTORE-DATA-REQ " message as shown in table 2.After this HLR receives this expansion " MAP-RESTORE-DATA-REQ " message, according to the MSISDN retrieve user information in this message, and structure standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " (MAP inserts user data requests) message sends to GMSC, the MSISDN that has comprised the calling subscriber in this standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message, the while has also comprised calling subscriber's CAMEL Subscription Information.After GMSC receives this message, return standard " MAP-INSERT-SUBSCRIBER-DATA-RSP " (MAP inserts the user data response) message to HLR.After HLR receives this message, return expansion " MAP-RESTORE-DATA-RSP " (response of MAP restore data) message to GMSC.So far, the GMSC of home network has obtained calling subscriber's CAMEL Subscription Information, and this GMSC can carry out subsequently operation according to calling subscriber's CAMEL Subscription Information.

In sum, by using " IMSI " in " MSISDN " replacement standard " MAP-RESTORE-DATA-REQ " message of calling subscriber, can obtain the Originating CAMEL Subscription Information of roaming users between networks easily according to the GMSC of home network of the present invention.

Claims (2)

1. the gateway MSC GMSC of a home network when the calling subscriber carries out internetwork roaming obtains the method for Originating CAMEL Subscription Information, it is characterized in that:

The international comprehensive service digital net number MSISDN of the calling subscriber's that described GMSC obtains from incoming call travelling carriage;

Described GMSC passes through with the international mobile subscriber identity IMSI in described calling subscriber's MSISDN replacement standard " MAP-RESTORE-DATA-REQ " message, construct expansion " MAP-RESTORE-DATA-REQ " message, and utilize this message to the attaching position register HLR of home network inquiring calling CAMEL-Subscription-Information;

Wherein, describedly may further comprise the steps to the HLR of home network inquiring calling CAMEL-Subscription-Information:

Described GMSC should expand " MAP-RESTORE-DATA-REQ " message and send to described HLR;

Described HLR is according to the MSISDN retrieve user information in this expansion " MAP-RESTORE-DATA-REQ " message, and structure standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message sends to described GMSC, and the mobile network who comprises calling subscriber's MSISDN and calling subscriber in this standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message strengthens the customized application CAMEL Subscription Information of logic;

After described GMSC receives this standard " MAP-INSERT-SUBSCRIBER-DATA-REQ " message, return standard " MAP-INSERT-SUBSCRIBER-DATA-RSP " message to described HLR; And after described HLR receives this standard " MAP-INSERT-SUBSCRIBER-DATA-RSP " message, return expansion " MAP-RESTORE-DATA-RSP " message to described GMSC.

2. method according to claim 1 is characterized in that, the form of described expansion " MAP-RESTORE-DATA-REQ " message is as shown in the table:

Parameter name Request Indication Response Confirm Call identifier ID M M(＝) M(＝) M(＝) MSISDN M M(＝) Local mobile identification number LMSI U C(＝) The customized application CAMEL stage that the mobile network who supports strengthens logic C C(＝) Support regional businesses region S oLSA to support designator C C(＝) Immediate service stops IST and supports designator C C(＝) The Super-Charger that supports in the network entity of serving C C(＝) Support long transferred number FTN C C(＝)

Parameter name Request Indication Response Confirm The location service LCS authority set of supporting C C(＝) HLR number C C(＝) The CAMEL 4 CAMEL-Subscription-Information CSI that provide C C(＝) The unreachable sign of mobile station MS C C(＝) User's mistake C C(＝) Supplier's mistake O

Wherein, " M " expression content of parameter is an essential option; " U " expression content of parameter is the service supplier option; " C " expression content of parameter is the service-user option; " O " expression content of parameter is to have ready conditions to use.