Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2005-12-20
2005-12-20
Pham, Chi (Department: 2667)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
C370S447000, C370S461000, C370S503000
Reexamination Certificate
active
06977919
ABSTRACT:
A bandwidth efficient subscriber unit initialization and synchronization method and apparatus is described. The inventive subscriber unit initialization and synchronization method and apparatus uses a combination of an access burst format and a data transportation technique to efficiently use bandwidth when initializing and synchronizing subscriber units in a time-synchronized communication system. Advantageously, the present invention provides a mechanism for a base station to receive multiple access bursts from multiple subscriber units in a single contiguous time period. In the preferred embodiment of the present invention, bandwidth is efficiently utilized by searching for multiple initial access bursts from multiple mobile stations during a single time period known as a new access opportunity. The preferred embodiment of the present invention initializes and synchronizes subscriber units in a “contention-based” manner.
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Berkeley Law & Technology Group LLC
Harington Valve LLC
Ly Anh-Vu
Pham Chi
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