The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2008
Filed:
May. 09, 2003
Sen-der Huang, San Diego, CA (US);
Don N. Andrus, Encinitas, CA (US);
James A. Hutchison, San Diego, CA (US);
Rotem Cooper, San Diego, CA (US);
Simon Turner, San Diego, CA (US);
Sen-Der Huang, San Diego, CA (US);
Don N. Andrus, Encinitas, CA (US);
James A. Hutchison, San Diego, CA (US);
Rotem Cooper, San Diego, CA (US);
Simon Turner, San Diego, CA (US);
QUALCOMM, Incorporated, San Diego, CA (US);
Abstract
A system and method for determining 1xEV-DO availability for a packet data call in a wireless device is presented. When the wireless device receives a request to initiate a packet data call, the device determines if it currently has access to a preferred 1xEV-DO channel. The determination can be made by consulting a 1xEV-DO availability list stored in persistent memory on the wireless device. If available, the wireless device originates the packet data call on the 1xEV-DO channel. If the device is using a CDMA system that has 1xEV-DO channels but the availability or usability of those channels are unknown, the device polls the signal strength on the 1xEV-DO channels to determine the best 1xEV-DO channel to use for the packet data call. If no 1xEV-DO channel is available or if none of the available 1xEV-DO channels are usable, then the device originates the packet data call on a CDMA channel.