Multiplex communications – Channel assignment techniques – Combining or distributing information via time channels...
Reexamination Certificate
2005-02-28
2010-02-16
Pham, Chi H (Department: 2416)
Multiplex communications
Channel assignment techniques
Combining or distributing information via time channels...
C375S146000, C375S147000, C455S007000
Reexamination Certificate
active
07664130
ABSTRACT:
The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible.
REFERENCES:
patent: 6567458 (2003-05-01), Kagaya
patent: 6907258 (2005-06-01), Tsutsumi et al.
patent: 7346357 (2008-03-01), Kim et al.
patent: 2006/0039281 (2006-02-01), Benveniste
Morioka Yuichi
Nishikawa Kenzo
Sakoda Kazuyuki
Suzuki Mitsuhiro
Boakye Alexander
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Pham Chi H
Sony Corporation
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