Location registration method, apparatus, and system
First Claim
1. A location registration method for a mobile terminal, comprising:
- receiving a location registration accept message from a network connected to the mobile terminal in response to a location registration request message;
comparing connected network information contained in the location registration accept message from the connected network with home network information stored in the mobile terminal; and
determining, if the connected network information is different from the home network information, whether to perform a home network search based on home network presence information contained in the location registration accept message,wherein the search is performed when the home network presence information indicates that a home network is neighboring the connected network;
otherwise the search is not performed.
1 Assignment
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Accused Products
Abstract
A location registration method, apparatus, and system protects against unnecessary power waste by a mobile terminal. The location registration method includes receiving a location registration accept message from a connected network in response to a location registration request message; comparing a connected network information contained in the location registration accept message with a home network information stored in the mobile terminal; and determining, if the connected network information is different from the home network information, whether or not to perform a home network search based on a home network presence indicator contained in location registration accept message. Battery usage of the mobile terminal can be decreased, as well as the energy spent for recharging the battery of the mobile terminal.
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Citations
22 Claims
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1. A location registration method for a mobile terminal, comprising:
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receiving a location registration accept message from a network connected to the mobile terminal in response to a location registration request message; comparing connected network information contained in the location registration accept message from the connected network with home network information stored in the mobile terminal; and determining, if the connected network information is different from the home network information, whether to perform a home network search based on home network presence information contained in the location registration accept message, wherein the search is performed when the home network presence information indicates that a home network is neighboring the connected network;
otherwise the search is not performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
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10. A location registration apparatus of a mobile terminal, comprising:
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a radio frequency unit which exchanges signals related to a registration and a home network search with a network connected to the mobile terminal; a storage unit which stores home network information of the mobile terminal; and a control unit which compares connected network information contained in a location registration accept message received from the connected network with home network information stored in the storage unit, and determines, if the connected network information is different from the home network information, whether to perform a home network search based on home network presence information contained in the location registration accept message; wherein the search is performed when the home network presence information indicates that a home network is neighboring the connected network;
otherwise, the search is not performed. - View Dependent Claims (11, 12, 13, 14, 15, 21)
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16. A location registration system comprising:
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a mobile terminal which registers with a network for accessing a specific service; a home network with which the mobile terminal is registered initially; and a visited network to which the mobile term is connected, wherein the visited network receives a location registration request message transmitted by the mobile terminal and sends a location registration response message containing home network presence information to the mobile terminal in response to the location registration request message, and the mobile terminal determines whether to perform a home network search process based on the home network presence information, the search being performed when the home network presence information indicates that a home network is neighboring the connected network;
otherwise, the search is not performed. - View Dependent Claims (17, 18, 19, 22)
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Specification