Roaming mobile communication system and method
First Claim
1. A roaming mobile communication system, comprising:
- a first mobile communication network in which a visited location register of a visited network visited by a mobile subscriber temporarily allocates a first roaming number at a time of call termination connection for a received call to a mobile subscriber;
a second mobile communication network in which a gateway location register of a visited network visited by a mobile subscriber allocates a second roaming number at a time of position registration of a mobile subscriber; and
an interworking location register, which is connected between the first mobile communication network and the second mobile communication network, and which functions as a visited location register from a viewpoint of the first mobile communication network and as a home location register from a viewpoint of the second mobile communication network when a mobile subscriber of the first mobile communication network roams to the second mobile communication network, and which functions as a home location register from a viewpoint of the first mobile communication network and as a gateway location register from a viewpoint of the second mobile communication network when a mobile subscriber of the second mobile communication network roams to the first mobile communication network, during the time of call termination connection and position registration of the first mobile communication network and the second mobile communication network, respectively.
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Accused Products
Abstract
A scheme for enabling a roaming call termination connection for a mobile subscriber between mobile communication networks adopting different roaming number allocation schemes is disclosed. A first mobile communication network in which a visited location register of a visited network temporarily allocates a roaming number at a time of call termination connection and a second mobile communication network in which a gateway location register of a visited network allocates a roaming number at a time of position registration are connected through an interworking location register, which functions as a visited location register from a viewpoint of the first mobile communication network and as a home location register from a viewpoint of the second mobile communication network when a mobile subscriber of the first mobile communication network roams to the second mobile communication network, and functions as a home location register from a viewpoint of the first mobile communication network and as a gateway location register from a viewpoint of the second mobile communication network when a mobile subscriber of the second mobile communication network roams to the first mobile communication network, in a position registration and call termination connection control operation at a time of roaming of a mobile subscriber.
38 Citations
21 Claims
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1. A roaming mobile communication system, comprising:
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a first mobile communication network in which a visited location register of a visited network visited by a mobile subscriber temporarily allocates a first roaming number at a time of call termination connection for a received call to a mobile subscriber; a second mobile communication network in which a gateway location register of a visited network visited by a mobile subscriber allocates a second roaming number at a time of position registration of a mobile subscriber; and an interworking location register, which is connected between the first mobile communication network and the second mobile communication network, and which functions as a visited location register from a viewpoint of the first mobile communication network and as a home location register from a viewpoint of the second mobile communication network when a mobile subscriber of the first mobile communication network roams to the second mobile communication network, and which functions as a home location register from a viewpoint of the first mobile communication network and as a gateway location register from a viewpoint of the second mobile communication network when a mobile subscriber of the second mobile communication network roams to the first mobile communication network, during the time of call termination connection and position registration of the first mobile communication network and the second mobile communication network, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A roaming mobile communication method, comprising the steps of:
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connecting a first mobile communication network in which a visited location register of a visited network visited by a mobile subscriber temporarily allocates a first roaming number at a time of call termination connection for a received call to a mobile subscriber, and a second mobile communication network in which a gateway location register of a visited network visited by a mobile subscriber allocates a second roaming number at a time of position registration of a mobile subscriber, through an interworking location register; and controlling a system formed by the first mobile communication network, the second mobile communication network, and the interworking location register such that the interworking location register functions as a visited location register from a viewpoint of the first mobile communication network and as a home location register from a viewpoint of the second mobile communication network when a mobile subscriber of the first mobile communication network roams to the second mobile communication network, and functions as a home location register from a viewpoint of the first mobile communication network and as a gateway location register from a viewpoint of the second mobile communication network when a mobile subscriber of the second mobile communication network roams to the first mobile communication network, during the time of call termination connection and position registration of the first mobile communication network and the second mobile communication network, respectively. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A location register apparatus for a roaming mobile communication system, comprising:
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connection means for connecting a first mobile communication network in which a visited location register of a visited network visited by a mobile subscriber temporarily allocates a first roaming number at a tine of call termination connection for a received call to a mobile subscriber, and a second mobile communication network in which a gateway location register of a visited network visited by a mobile subscriber allocates a second roaming number at a time of position registration of a mobile subscriber; and function means for functioning as a visited location register from a viewpoint of the first mobile communication network and as a home location register from a viewpoint of the second mobile communication network when a mobile subscriber of the first mobile communication network roams to the second mobile communication network, and functioning as a home location register from a viewpoint of the first mobile communication network and as a gateway location register from a viewpoint of the second mobile communication network when a mobile subscriber of the second mobile communication network roams to the first mobile communication network, during the time of call termination and position registration of the first mobile communication network and the second mobile communication, respectively. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification