Channel switching method and mobile communication terminal...

Details Channel switching method and mobile communication terminal... Channel switching method and mobile communication terminal...

2007-09-18

2007-09-18

Nguyen, Duc M. (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S350000, C370S503000, C370S331000, C455S502000, C455S442000

Reexamination Certificate

active

10303886

ABSTRACT:
A network station sends a switching instruction to a mobile unit. The mobile unit has two receiving sections and a transmitting section operable in two data formats. Upon receipt of the switching instruction, the first receiving section switches from a first data format to a second data format. The transmitting section sends an acknowledgment signal to the network. The first receiving section and transmitting section then attempt to switch to the second data format. The second receiving section remains in the first data format. The first receiving section then attempts to achieve synchronization. If synchronization is successful, a completion notice is sent back to the network station and the second receiving section is switched from the first data format to the second data format. If the synchronization is not successful, the second receiving section switches both the first receiving section and transmitting section back to the first data format and the first receiving section waits for a further switching instruction from the network.

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Japanese Office Action issued Aug. 17, 2004 (w/ relevant English translation).

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