Method for capturing caller subscription information upon cross-network roaming

A technology of contract information and network, applied in wireless communication, network data management, electrical components, etc., can solve the problem of deduction, prepaid users do not realize inter-network roaming, and can not determine whether prepaid users or postpaid users.

Active Publication Date: 2008-01-16
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technology described by this patented allows for easy access from different types of devices (home/work) on multiple wireless communication systems without having to pay extra money each time they are connected through another type device like their own phone). This makes them easier than other methods because users only have one way to call with someone else instead of being charged separately every time.

Problems solved by technology

The technical problem addressed by this patented technology relates how people who are on different networks can access their own data without being charged for them when they travel between two operators' networks at home.

Method used

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  • Method for capturing caller subscription information upon cross-network roaming

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Experimental program
Comparison scheme
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Embodiment Construction

[0006] For the process of obtaining the caller's subscription information, there is no corresponding specification in the current 3GPP (Third Generation Partnership Project) specification. In the standard MAP (Mobile Application Part) protocol, the format of the MAP-RESTORE-DATA-REQ (MAP Restoration Data Request) message is shown in Table 1 below, and it is queried according to the IMSI of the queried user.

[0007] Table 1 Format of the standard MAP-RESTORE-DATA-REQ message

[0008] parameter name

ask

instruct

response

confirm

Call ID (identifier)

M

M(＝)

M(＝)

M(＝)

IMSI

M

M(＝)

LMSI (Local Mobile Subscriber Identity)

U

C(＝)

Supported CAMEL (Mobile Network Enhanced Logic

Custom application of the editor) stage

C

C(＝)

SoLSA (Supporting Local Service Area) support

holding indicator

C

C(＝)

IST (immediate service ter...

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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

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Claims

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Application Information

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Owner CHINA TELECOM CORP LTD
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