Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2002-05-14
2008-09-02
Nguyen, Lee (Department: 2618)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S347000
Reexamination Certificate
active
07420949
ABSTRACT:
A method of, and system for, reserving timeslots in a TDMA system of a type in which a plurality of subscriber units (CPE) use the same radio channel for transmission during different timeslots to a base station and in which the base station administers the radio channel centrally enable subscriber units to transfer, if appropriate, a transmission request to the base station in the form of a PN (Pseudo-random noise) sequence (e.g., M-sequence, preferred gold, Katsami or orthogonal gold sequence). Transmission requests from different subscriber units can be identified at the base station using the PN sequence, reception time of the PN sequence and/or phase of the PN sequence.
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Ericsson AB
Kirschstein et al.
Nguyen Lee
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