Multiplex communications – Communication over free space – Signaling for performing battery saving
Reexamination Certificate
2011-01-11
2011-01-11
Harper, Vincent P (Department: 2617)
Multiplex communications
Communication over free space
Signaling for performing battery saving
C370S252000, C370S329000, C370S345000, C370S347000, C370S349000, C370S468000, C370S498000, C455S343200, C455S343400
Reexamination Certificate
active
07869390
ABSTRACT:
The present invention provides a method and a system for PSMP communication in a wireless communication system such as an IEEE 802.11n WLAN including an AP and multiple STAs. An example of such a PSMP communication involves transmitting a PSMP frame from the AP to the STAs over a wireless channel, detecting if the channel is idle for certain duration, and if the channel is idle for said certain duration, then performing a PSMP recovery process. The PSMP frame includes one or more STA info fields which specify schedules of periods for communication over the wireless channel in a PSMP sequence. In performing a PSMP recovery process, the AP constructs and broadcasts a PSMP recovery frame that allows STAs that missed the original PSMP frame to join the PSMP sequence.
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Ngo Chiu
Singh Harkirat
Harper Vincent P
Myers Andras Sherman & Zarrabian LLP
Sabouri Mazda
Samsung Electronics Co,. Ltd.
Sherman, Esq. Kenneth L.
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