Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2011-01-18
2011-01-18
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C370S311000, C370S318000, C370S468000
Reexamination Certificate
active
07873848
ABSTRACT:
Power saving cannot be implemented in the adhoc mode by only the IEEE 802.11 standard. This is because communication partners mutually utilize the power save mode in the adhoc mode, and their states must always be managed. In the adhoc mode, the number of communication partners is not always one, and all stations which join a network are candidates, increasing the load of implementation. To solve this problem, a communication apparatus notifies a change to power save mode by an ATIM packet, RTS packet, or null packet. When the ATIM packet or RTS packet is transmitted, the communication apparatus can notify the partner of a change in mode regardless of whether the partner is in the power save mode. When the null packet is transmitted, the communication apparatus can rapidly notify the partner without waiting for any beacon.
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Hara Kazutoshi
Mashimo Hiroshi
Nakahara Masanori
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Lee Thomas
Tran Vincent T
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