Pulse or digital communications – Systems using alternating or pulsating current
Reexamination Certificate
2006-02-14
2006-02-14
Tran, Khai (Department: 2637)
Pulse or digital communications
Systems using alternating or pulsating current
C375S220000, C375S356000, C370S230000, C370S252000, C370S432000, C714S748000, C714S749000
Reexamination Certificate
active
06999519
ABSTRACT:
A multicast radio data communication system comprising a master and a plurality of slave stations uses a retransmission protocol. Data is transmitted by the master station and received by the slave stations. Slave stations having the weakest radio link are designated primary stations, and all other slaves are designated secondary stations. Any slave station may transmit a negative acknowledgement but only the primary stations may transmit a positive acknowledgement. Positive acknowledgements are transmitted in separate time slots, but negative acknowledgements transmitted by the secondary stations overlap the positive acknowledgements transmitted by primary stations. These negative acknowledgements corrupt reception of the positive acknowledgement by the master station, thereby ensuring that the data is retransmitted.
REFERENCES:
patent: 4584685 (1986-04-01), Gajjar
patent: 5586121 (1996-12-01), Moura et al.
patent: 5923662 (1999-07-01), Stirling et al.
patent: 6021308 (2000-02-01), Kimura
patent: 6028866 (2000-02-01), Engel et al.
patent: 6392993 (2002-05-01), Hamilton et al.
patent: 6680914 (2004-01-01), Jung et al.
patent: 6721306 (2004-04-01), Farris et al.
patent: 0909069 (1999-04-01), None
patent: 2287383 (1995-09-01), None
patent: WO9805144 (1998-02-01), None
“Standard Data Procedures”; MPT 1327, UK Radiocommunications Agency, Nov. 1991, chapter 17, pp. 1-55.
“Radio System and Stations for, and Methods of, Multicast Communication”, Robert J. Davies, filed May 2, 2001, U.S. Appl. 09/847,216, Pending.
“Radio System and Apparatus for, and Method of, Multicast Communication”, Robert J. Davies, filed May 21, 2001, U.S. Appl. No. 09/861,940, Pending.
J. Kuri et al, “Reliabl M<multicast in Mult-Access Wireless LANS”, IEEE Infocom 1999, 'Online!, vol. 2, Mar. 1999, pp. 760-767, XP002178197.
Chang Edith
Koninklijke Philips Electronics , N.V.
Tran Khai
LandOfFree
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