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 acces s 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 WL AN subsystem (712), acquiring the WLAN channel (407), and transmitting a pollin g frame. Upon successful receipt of the polling frame the access point prepare s 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.
Abstract:
A mobile station establishes a schedule by which data is exchanged with an access point. The schedule allows the mobile station to use a low power mode (608) at times outside of the scheduled service periods. However, the mobile station may occasionally need to retrieve additional data from the access point, or transmit additional data to the access point, and so initiates an unscheduled service period to do so (614).
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.
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 acces s 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 WL AN subsystem (712), acquiring the WLAN channel (407), and transmitting a pollin g frame. Upon successful receipt of the polling frame the access point prepare s 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.
Abstract:
A mobile station establishes a schedule by which data is exchanged with an access point. The schedule allows the mobile station to use a low power mode at times outside of the scheduled service periods. However, the mobile station may occasionally need to retrieve additional data from the access point, or transmit additional data to the access point, and so initiates an unscheduled service period to do so.
Abstract:
A mobile station establishes a schedule by which data is exchanged with an access point. The schedule allows the mobile station to use a low power mode (608) at times outside of the scheduled service periods. However, the mobile station may occasionally need to retrieve additional data from the access point, or transmit additional data to the access point, and so initiates an unscheduled service period to do so (614).
Abstract:
The invention concerns a method (200) and system (100) for coordinating a sleep mode wake-up time. The method can include the steps of entering (214) a sleep mode and selecting (214) a paging group, advising (216) a base station (110) of the sleep mode and the selection of the paging group and coordinating (218) a wake-up time of the sleep mode with a second power saving mode that includes a common availability time (312) for mobile stations (116) communicating with the base station to detect signals from the base station. As an example, the second power saving mode (300) can be an idle mode, and the common availability time can be a listening interval of the idle mode.
Abstract:
The invention concerns a method (200) and system for improving transmission or receipt of channel descriptors. The method can include the steps of - in a wireless communication system (100) that periodically broadcasts regular channel descriptors (310) at a set interval (312) - changing (212) a modulation scheme and transmitting (216) one or more supplementary channel descriptors (314) during the set interval between regular channel descriptors. The method can also include the step of periodically transmitting (214) a channel descriptor count (412) that provides an indication of the changed modulation scheme.