Providing idle periods in an otherwise continuous...

Details Providing idle periods in an otherwise continuous... Providing idle periods in an otherwise continuous...

2007-02-06

2007-02-06

To, Doris H. (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000, C370S337000, C370S347000

Reexamination Certificate

active

10404874

ABSTRACT:
A method is described of controlling a communication system using a continuous FDD channel. Each time segment of the channel is divided into a predetermined number of sub-segments. For a first set of time segments, the communication signal data for the respective time segment is repeated in all sub-segments, and for a second set of time segments, null periods are provided in one or more of the sub-segments during which the communication signal from the first station to the second station is interrupted. The communication signal data is transmitted during the remaining sub-segments of the second set. This approach enables a slotted transmission mode to be established in a CDMA FDD system, without the need to adapt the spreading ratio of the CDMA system.

REFERENCES:
patent: 5175867 (1992-12-01), Wejke et al.
patent: 5194873 (1993-03-01), Sickles, II
patent: 5818829 (1998-10-01), Raith et al.
patent: 5930684 (1999-07-01), Keskitalo et al.
patent: WO 94/29981 (1994-12-01), None

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