Method for modem switching for use with MM-MB terminal

Details Method for modem switching for use with MM-MB terminal Method for modem switching for use with MM-MB terminal

2011-07-12

2011-07-12

Pérez-Gutiérrez, Rafael (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S442000, C370S335000, C370S441000, C370S479000, C375S220000, C375S221000, C375S222000

Reexamination Certificate

active

07978664

ABSTRACT:
A multimode-multiband terminal includes an RF antenna for transceiving a CDMA-2000 signal and/or a WCDMA signal; an RF transceiver for demodulating a WCDMA pilot signal received from the RF antenna and outputting the demodulated WCDMA pilot signal; a pilot signal measurement unit for measuring an intensity of the demodulated WCDMA pilot signal to generate an Ec/Io; a WCDMA modem and a CDMA-2000 modem for performing a call processing according to protocols defined by a WCDMA standard and a CDMA-2000 standard, respectively; a flash memory for storing therein a modem-to-modem switching program capable of performing a switching between the WCDMA modem and the CDMA-2000 modem based on the Ec/Io; and a controller for loading the modem-to-modem switching program and activating the CDMA-2000 modem if a time lapse during which the Ec/Io is maintained smaller than a predetermined CDMA-2000 ON threshold THONis greater than a preset CDMA-2000 ON condition time Hd.

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