Title:
APPARATUS AND METHODS FOR PROVIDING MULTI-BAND OPERATION IN A MOBILE COMPUTING DEVICE
Document Type and Number:
WIPO Patent Application WO2008077025
Kind Code:
A9
Abstract:
Methods and apparatus for providing multi-band operation in a mobile computing device are disclosed A mobile computing device may be arranged to support quad-band GSM communication in the GSM-850, GSM-900, GSM- 1800, and GSM-1900 frequency bands The mobile computing device may be arranged to determine a starting frequency band based on the home country and home network By using the determined starting frequency band associated with the home country and home network of the user, fewer and/or shorter delays may be experienced when searching for and acquiring an available frequency Once a network search is completed, the mobile computing device may be arranged to determine whether a network can be found in current frequency band pair for normal service, to disconnect from the acquired network if normal service is not supported, and to intelligently search for an available frequency in a different frequency band
Inventors:
SHI JIANXIONG (US)
MAHE ISABEL (US)
MAHE ISABEL (US)
Application Number:
PCT/US2007/087907
Publication Date:
October 02, 2008
Filing Date:
December 18, 2007
Export Citation:
Assignee:
PALM INC (US)
SHI JIANXIONG (US)
MAHE ISABEL (US)
SHI JIANXIONG (US)
MAHE ISABEL (US)
International Classes:
H04B1/04; H04B1/02
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