Method and apparatus for adapting a time division duplex timing

Details Method and apparatus for adapting a time division duplex timing Method and apparatus for adapting a time division duplex timing

1997-08-29

1999-09-28

Chan, Jason

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370350, 370508, 370519, H04J 306

Patent

active

059599820

ABSTRACT:
A Time Division Duplex (TDD) wireless system utilizes an identical TDD IC engine in both base station and remote stations. In the base station the clock input to the TDD IC is halted once in the middle of each time slice to provide a central guard band between transmit and receive portions that determines the maximum range of the system. At the remote stations clock halts are programmed and utilized to provide guard bands to position transmit and receive portions in each time slice to accommodate propagation delay based on separation of a remote station from the base station. In a preferred embodiment the remote stations determine range to the base and a controller programs clock halts based on the range finding. In one aspect a TDD IC engine is used with a minimum fixed central guard band and a time slice of a first duration at a first clock frequency. Clock frequency is increased and the clock halted to provide increased range at the same time slice duration. The same IC engine at the remote stations is operated at the higher frequency and clock halts used to provide the same time slice duration of the base station and to space the transmit and receive portions of the time slice properly to accommodate propagation delay.

REFERENCES:
patent: 4435620 (1984-03-01), Fechalos et al.
patent: 5216429 (1993-06-01), Nakagawa et al.
patent: 5537549 (1996-07-01), Gee et al.
patent: 5689502 (1997-11-01), Scott
patent: 5748621 (1998-05-01), Masuda et al.

Affiliated with

Also associated with

Rating

Method and apparatus for adapting a time division duplex timing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for adapting a time division duplex timing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adapting a time division duplex timing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-711926