Title:
DUAL MODE UNIT FOR SHORT RANGE, HIGH RATE AND LONG RANGE, LOWER RATE DATA COMMUNICATIONS
Document Type and Number:
WIPO Patent Application WO2004064308
Kind Code:
B1
Abstract:
A technique for communicating with a local area network (LAN) via a wireless connection determines whether a first short-range, high-speed, wireless communication path is available and connects to the LAN using a longer range, lower speed wireless communication path if the short-range, high-speed wireless communication path is not available. The low-range, high-speed wireless communication path is a wireless LAN connection such as an IEEE 802.11 compliant wireless LAN and the long-range, low-speed wireless communication mode is a cellular CDMA-type connection. Determining whether the first IEEE 802.11 mode is available can be done by detecting a beacon signal, or by transmitting a probe request message and detecting a probe response message in response to the probe request, indicating the presence or availability of the short range, high-speed wireless communication path. Alternatively, the availability of short-range, high-speed wireless communication path can be detected by simply detecting activity on it.
Inventors:
GORSUCH THOMAS E (US)
Application Number:
PCT/US2004/000891
Publication Date:
July 14, 2005
Filing Date:
January 13, 2004
Export Citation:
Assignee:
IPR LICENSING INC (US)
GORSUCH THOMAS E (US)
GORSUCH THOMAS E (US)
International Classes:
H04B7/26; H04L12/28; H04L12/66; H04L29/02; H04M1/00; H04W48/18; H04W40/02; H04W84/04; H04W84/12; H04W88/06; H04L; (IPC1-7): H04Q7/24; H04M1/00
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