Multiplex communications – Communication over free space – Signaling for performing battery saving
Reexamination Certificate
2005-07-12
2005-07-12
Pham, Chi (Department: 2667)
Multiplex communications
Communication over free space
Signaling for performing battery saving
C370S338000
Reexamination Certificate
active
06917598
ABSTRACT:
A mobile station (106) establishes a real time communication link via an access point (102) for carrying voice or other time-sensitive data. A WLAN subsystem (204) of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the access point that unscheduled power save delivery mode will be used (614), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WLAN subsystem (712), acquiring the WLAN channel (407), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares to reply with an aggregate response. The aggregate response commences by transmitting all data in an aggregate buffer, including both reserved and unreserved data buffers. Upon successful receipt of the aggregate response, the mobile station places the WLAN subsystem back into a low power state.
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Chen Ye
Emeott Stephen P.
Simpson Floyd D.
Smavatkul Nattavut
Wang Huai Y.
Garrett Scott M.
Ly Anh-Vu H
Motorola Inc.
Pham Chi
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