IP network information database in mobile devices for use with media independent information server for enhanced network
First Claim
1. A method of performing a handoff operation for a wireless IP mobile device, comprising the steps of:
- providing a local database in said mobile device that stores wireless network information;
comparing a received signal strength of said mobile device with a threshold value, and if said received signal strength is determined to be weak as compared with said threshold value,checking said local database for available wireless networks in a current geographic region in which said mobile device is located and initiating handoff actions to a target network if an available network exists as stored in said database;
if no available network information for said region exists in said database, sending a query to a MIIS for available network information, and initiating handoff actions to a target network if an available network exists as indicated in a response from said MIIS.
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Accused Products
Abstract
A mobile device receives wireless network information from a MIIS (Media Independent Information Server), and builds its own database of existing networks with their associated characteristics, appropriately mapped with GPS (Global Positioning Satellite) coordinates or other appropriate form of geographical location identifying information. Consequently, the mobile device becomes “smart” over time through the learning process of first attempting to utilize its own developed database and, only if such database information falls short, making a remote query to a MIIS to get required information for session continuity and performing handovers. The mobile device may store the information received from the MIIS in its own local database together with a time-stamp. Each time the mobile device needs to get updated or new information, it sends a request to the MIIS along with the time-stamp appended to the request. In this way, the mobile device is sent only the information that it does not already have stored in its database.
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Citations
19 Claims
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1. A method of performing a handoff operation for a wireless IP mobile device, comprising the steps of:
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providing a local database in said mobile device that stores wireless network information; comparing a received signal strength of said mobile device with a threshold value, and if said received signal strength is determined to be weak as compared with said threshold value, checking said local database for available wireless networks in a current geographic region in which said mobile device is located and initiating handoff actions to a target network if an available network exists as stored in said database; if no available network information for said region exists in said database, sending a query to a MIIS for available network information, and initiating handoff actions to a target network if an available network exists as indicated in a response from said MIIS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of maintaining a network information database in a wireless IP mobile device, comprising the steps of:
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providing a local database in said mobile device that stores wireless network information; checking said local database for available wireless networks in a current geographic region in which said mobile device is located; if an available network exists as stored in said database, determining whether stored network information of said available network needs to be updated, sending a MIIS update query to a MIIS if said stored network information needs updating, and updating said network information with updated information received in an update response from said MIIS; if no available network information for said region exists in said database, sending a query to said MIIS for available network information, and storing network information received in a response from said MIIS in said database. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification