Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-08-16
2005-08-16
Qureshi, Afsar (Department: 2667)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S329000, C370S468000, C455S452200
Reexamination Certificate
active
06930991
ABSTRACT:
A CDMA wireless digital communication system which supports all types of voice and data communications while utilizing the minimum amount of bandwidth for the particular application. The system efficiently allocates ISDN bandwidth on demand by a subscriber. Upon initialization of the subscriber unit, the system establishes a channel and generates the necessary spreading codes to support the highest capacity channel desired by the subscriber unit. Portions of the communication spectrum bandwidth are not reserved until actually required by the subscriber unit. Since the call setup is performed at the beginning of a call from that subscriber unit, including the assignment of spreading codes, a subscriber unit can quickly gain access to the portion of the spectrum that is required to support the particular application.
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“OSI—A model for Computer Communications Standards” by Uyless Black (Chapters 3 and 4), 1991.
Newton's Telecom Dictionary by Harry Newton, 1998.
H. Azad et al.: “Multirate Spread Spectrum Direct Sequence CDMA Techniques”—IEE Colloquium on Spread Spectrum Techniques for Radio Communications Systems (Digest No. 95), Apr. 27, 1993, Apr. 15, 1994, pp. 4/1-4/05, XP000570787.
InterDigital Technology Corporation
Qureshi Afsar
Volpe and Koenig P.C.
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