APPARATUS AND METHOD FOR MANAGING DORMANT STATE IN A WIRELESS PACKET DATA SYSTEM
First Claim
1. A method for storing dormant state information of mobile stations in a dormant state where no packet data is exchanged with an external packet network, in a centralized database connected to a packet data switch, and updating the dormant state information stored in the centralized database in association with the mobile station when the mobile station in the dormant state moves to a target BSC (Base Station Controller) adjacent to a source BSC in a wireless packet data system including a packet data switch node (PDSN) for connecting the external packet network to the mobile stations through the packet data switch and the source BSC connected to the packet data switch, the method comprising the steps of:
- receiving from the mobile station at the target BSC a location registration message when the mobile station moves to the target BSC adjacent to the source BSC;
upon receipt of the location registration message, transmitting from the target BSC to the centralized database a location update message for updating a location of the mobile station;
upon receipt of the location update message, updating by the centralized database the dormant state information for the mobile station so as to connect the target BSC to the source BSC; and
transmitting from the centralized database to the target BSC a location update result message indicating complete update of the dormant state information.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless packet data system efficiently manages a location of a packet call in a radio environment. A mobile station transmits a location registration message to a target BSC when moving to the target BSC adjacent to a source BSC. Upon receipt of the location registration message, the target BSC transmits a location update message for updating a location of the mobile station to a centralized database. Upon receipt of the location update message, the centralized database updates dormant state information for the mobile station to connect the target BSC to the source BSC. The centralized database transmits a location update result message indicating complete update of the dormant state information to the target BSC.
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Citations
19 Claims
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1. A method for storing dormant state information of mobile stations in a dormant state where no packet data is exchanged with an external packet network, in a centralized database connected to a packet data switch, and updating the dormant state information stored in the centralized database in association with the mobile station when the mobile station in the dormant state moves to a target BSC (Base Station Controller) adjacent to a source BSC in a wireless packet data system including a packet data switch node (PDSN) for connecting the external packet network to the mobile stations through the packet data switch and the source BSC connected to the packet data switch, the method comprising the steps of:
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receiving from the mobile station at the target BSC a location registration message when the mobile station moves to the target BSC adjacent to the source BSC;
upon receipt of the location registration message, transmitting from the target BSC to the centralized database a location update message for updating a location of the mobile station;
upon receipt of the location update message, updating by the centralized database the dormant state information for the mobile station so as to connect the target BSC to the source BSC; and
transmitting from the centralized database to the target BSC a location update result message indicating complete update of the dormant state information. - View Dependent Claims (2, 3, 4, 5)
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6. A method for reconnecting an exchange of packet data between a mobile station and an external packet network by storing dormant state information of mobile stations in a dormant state where no packet data is exchanged with the external packet network, in a centralized database connected to a packet data switch, and updating the dormant state information stored in the centralized database in association with the mobile station when the mobile station in the dormant state moves to a target BSC adjacent to a source BSC in a wireless packet data system including a packet data switch node (PDSN) for connecting the external packet network to the mobile stations through the packet data switch and the source BSC connected to the packet data switch, the method comprising the steps of:
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receiving from the mobile station at the target BSC an origination message for requesting transmission of packet data;
upon receipt of the origination message, transmitting from the target BSC to the centralized database a dormant state information request message for requesting dormant information;
upon receipt of the dormant state information request message, searching by the centralized database dormant state information stored in association with the mobile station and transmitting the searched dormant state information using a search result message to the target BSC; and
upon receipt of the search result message, transmitting from the target BSC to the source BSC, a packet call connection message for requesting reconnection of the packet call and thus connecting the source BSC to the target BSC through the packet data switch. - View Dependent Claims (7, 8, 9, 10)
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11. A method for storing dormant state information of mobile stations in a dormant state where no packet data is exchanged with an external packet network, in a centralized database connected to a packet data switch, and updating the dormant state information stored in the centralized database in association with the mobile station when the mobile station in the dormant state moves to a target BSC adjacent to a source BSC in a wireless packet data system including a packet data switch node (PDSN) for connecting the external packet network to the mobile stations through the packet data switch and the source BSC connected to the packet data switch, the method comprising the steps of:
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transmitting to the target BSC a location registration message when the mobile station moves to the target BSC adjacent to the source BSC;
upon receipt of the location registration message, transmitting from the target BSC to the centralized database a location update message for updating a location of the mobile station;
upon receipt of the location update message, transmitting from the centralized database to the PDSN a location information update request message for requesting designation of the target BSC as a source BSC;
upon receipt of the location information update request message, designating by the PDSN the target BSC as a new source BSC and transmitting an acknowledge message to the centralized database; and
upon receipt of the acknowledge message, updating by the centralized database the dormant state information for the mobile station by the centralized database and transmitting a location update result message indicating complete update of the dormant state information to the target BSC. - View Dependent Claims (12, 13, 14, 15)
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16. A method for reconnecting an exchange of packet data between a mobile station and an external packet network by storing dormant state information of mobile stations in a dormant state where no packet data is exchanged with the external packet network, in a centralized database connected to a packet data switch, and updating the dormant state information stored in the centralized database in association with the mobile station when the mobile station in the dormant state moves to a target BSC adjacent to a source BSC in a wireless packet data system including a packet data switch node (PDSN) for connecting the external packet network to the mobile stations through the packet data switch and the source BSC connected to the packet data switch, the method comprising the steps of:
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transmitting from the mobile station to the target BSC an origination message for requesting transmission of packet data;
upon receipt of the origination message, transmitting from the target BSC to the centralized database a dormant information request message for requesting dormant information;
upon receipt of the dormant information request message, searching by the centralized database dormant state information stored in association with the mobile station, and transmitting the searched dormant state information to the target BSC using a search result message; and
upon receipt of the search result message, connecting by the target BSC the mobile station to the PDSN through the packet data switch based on the dormant state information included in the search result message. - View Dependent Claims (17, 18, 19)
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Specification