Method and system for implementing roam restriction

Details Method and system for implementing roam restriction Method and system for implementing roam restriction

2006-09-22

2010-10-19

Harper, Vincent P (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C370S331000, C455S436000, C455S432300, C455S410000, C455S433000, C455S424000

Reexamination Certificate

active

07817999

ABSTRACT:
A method for implementing roam restriction and a system thereof are disclosed in the present invention, by setting up a list of areas where the terminal is allowed to roam. The method includes: the terminal sends a wireless service request to the mobile switching center on the wireless communication network side, wherein the request carries the information of at least one cell currently activated by this terminal; the mobile switching center determines whether there is a cell among the at least one cell currently activated by this terminal, whose cell information is included in the list of areas where the terminal is allowed to roam, if yes, executes current wireless service for this terminal; otherwise, rejects to execute current wireless service for this terminal. With this method, when the number of the cells is increased or changed, there is no need to modify the relationship between the associated IMSI/MIN and the cells or modify the IMSI/MIN of the terminals one by one under the circumstance of migration. Furthermore, since the information of all cells currently activated by the terminal is obtained by the wireless communication network side, when the terminal is located in an overlapped area covered by two cells, this method for implementing roam restriction on the terminal can still be used.

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