System and method for frequency division duplex/time division du

Details System and method for frequency division duplex/time division du System and method for frequency division duplex/time division du

1997-11-10

1999-09-21

Nguyen, Chau

Multiplex communications

Duplex

Communication over free space

370478, H04J 400

Patent

active

059563265

ABSTRACT:
A method of radio frequency communications between a first unit and a second unit. The method includes the steps of transmitting during a first time interval over a first frequency by the first unit, receiving during the first time interval over the first frequency by the second unit, transmitting during a second time interval over a second frequency by the second unit, receiving during the second time interval over the second frequency by the first unit. The method also includes the step of setting a select frequency shift between the first frequency and the second frequency. In one application of the method, the first unit is a cordless telephone hand set and the second unit is a cordless telephone base station. The method is particularly effective when the first unit and the second unit operate in TDD mode.

REFERENCES:
patent: 4129749 (1978-12-01), Goldman
patent: 5134710 (1992-07-01), kerberg
patent: 5428601 (1995-06-01), Owen
patent: 5515366 (1996-05-01), Chieu
patent: 5533027 (1996-07-01), ckerburg
patent: 5566168 (1996-10-01), Dent
patent: 5889814 (1999-03-01), Simmons

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