Method to provide backward compatibility with an existing...

Details Method to provide backward compatibility with an existing... Method to provide backward compatibility with an existing...

2007-12-04

2007-12-04

Pham, Chi (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S469000, C370S442000

Reexamination Certificate

active

10778720

ABSTRACT:
A method of providing backwards compatibility of a new TDMA system with an existing CSMA/CA system, wherein the CSMA/CA system includes asynchronous packet transmission, and wherein the TDMA system includes synchronous packet transmission, and wherein both systems transmit and receive over the same communication channel, including providing a control coordinator; dividing the TDMA system's frame into sub-frames for use by the CSMA/CA system and the TDMA system; and generating delimiters by the control coordinator to gain, retain and relinquish control of the communication channel from the CSMA/CA system, and wherein the delimiters are transmitted during guard bands of the TDMA system.

REFERENCES:
patent: 6987770 (2006-01-01), Yonge, III
patent: 2003/0156603 (2003-08-01), Rakib et al.
patent: 2006/0198387 (2006-09-01), Yonge et al.
patent: 2007/0047510 (2007-03-01), Cho et al.
patent: 2007/0097960 (2007-05-01), Kurobe et al.
patent: 0622712 (2003-06-01), None

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