Multiplex communications – Pathfinding or routing – Through a circuit switch
Reexamination Certificate
2001-09-05
2008-03-04
Lee, Andrew C. (Department: 2616)
Multiplex communications
Pathfinding or routing
Through a circuit switch
C370S294000, C370S295000
Reexamination Certificate
active
07339926
ABSTRACT:
A method and system for using half-duplex base stations and half-duplex nodes in a Frequency Division Duplexing region to provide wireless connectivity between the half-duplex base stations and customers in multiple sectors of a cell. The method and system can use two physical channels to form two logical channels. Each logical channel shares both physical channels during alternating frames of time. The half-duplex nodes can include a millimeter-wave band frequency synthesizer configured to transmit and receive on different channels to and from the half-duplex base station. Re-use patterns of the physical channels are used for deployment of half-duplex base stations and half-duplex nodes in the FDD region to minimize co-channel interference and interference due to uncorrelated rain fade. Additional methods and systems utilize full-duplex base stations and smart antenna to communicate with the half-duplex nodes.
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Klein Israel Jay
Stanwood Kenneth L.
Harington Valve LLC
Lee Andrew C.
Schwabe Williamson & Wyatt P.C.
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