Patent ID: 7184788
Filing Date: 2007-02-27
Classification: H04W

Abstract:
1. A method, comprising: reading a first system identification number (“SID”) broadcast in a first frequency band, the first SID identifying a cellular service provider; determining whether the first SID matches a SID stored in a dynamically updated SID table, the SID in the table identifying a cellular service provider that supports an application that exchanges remote access application message (RAAM) data packets with a radio frequency (RF) module via cellular control channels; switching to a second frequency band and reading a second SID broadcast in the second frequency band if the first SID does not match a SID stored in the SID table, wherein support for the application is identified if the first or second SID matches a SID stored in the SID table; determining whether support for the application needs to be detected quickly if neither the first nor the second SID is identified in the SID table; performing a first process to detect support for the application if support needs to be detected quickly; and performing a second process to detect support for the application if support does not need to be detected quickly.