Apparatus and method of power saving for stations in wireless communication system
First Claim
1. A power control apparatus of a terminal supporting a voice over internet protocol (VoIP) service in a wireless communication system, comprising:
- a user interface unit configured to include a voice CODEC using in the VoIP service;
a controller configured to be connected to the user interface unit, include predetermined application programs including a VoIP application program, and control signaling for setting up a VoIP service call and canceling the VoIP service call; and
a medium access control (MAC) processor configured to perform a medium access control function and include a timer unit in order to transmit a trigger frame for beginning a unscheduled-service period (U-SP), by receiving a VoIP service call setup signal and a VoIP service call cancel signal from the controller,wherein, when the VoIP service call is not set up, in a delivery-enabled state of four access categories, the MAC processor receives a beacon frame from an access point (AP), analyzes a traffic indication message included in the beacon frame, determines whether data are buffered or not in the AP, when the AP has the buffered data, transmits the trigger frame to the AP, and receives the buffered data from the AP receiving the trigger frame.
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Accused Products
Abstract
A power control apparatus of a wireless communication terminal providing a voice over internet protocol (VoIP) service in a wireless communication system includes a user interface unit configured to include a voice CODEC using in the VoIP service, a controller configured to be connected to the user interface unit, include predetermined application programs including a VoIP application program, and control signaling for setting up a VoIP call and canceling a VoIP call, and a medium access control (MAC) processor configured to perform a medium access control function and include a timer unit for beginning a unscheduled-service period (U-SP) by receiving a VoIP call setup signal and a VoIP call cancel signal from the controller.
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Citations
14 Claims
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1. A power control apparatus of a terminal supporting a voice over internet protocol (VoIP) service in a wireless communication system, comprising:
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a user interface unit configured to include a voice CODEC using in the VoIP service; a controller configured to be connected to the user interface unit, include predetermined application programs including a VoIP application program, and control signaling for setting up a VoIP service call and canceling the VoIP service call; and a medium access control (MAC) processor configured to perform a medium access control function and include a timer unit in order to transmit a trigger frame for beginning a unscheduled-service period (U-SP), by receiving a VoIP service call setup signal and a VoIP service call cancel signal from the controller, wherein, when the VoIP service call is not set up, in a delivery-enabled state of four access categories, the MAC processor receives a beacon frame from an access point (AP), analyzes a traffic indication message included in the beacon frame, determines whether data are buffered or not in the AP, when the AP has the buffered data, transmits the trigger frame to the AP, and receives the buffered data from the AP receiving the trigger frame. - View Dependent Claims (2, 3, 4)
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5. A method for controlling power of a terminal supporting a voice over internet protocol (VoIP) service in a wireless communication system, comprising:
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when a VoIP service call is not set up, receiving a beacon frame from an access point (AP), analyzing a traffic indication message included in the beacon frame, and determining whether data are buffered or not in the AP; when the AP has the buffered data, transmitting a trigger frame to the AP; receiving the buffered data from the AP receiving the trigger frame; when the VoIP service call is setup for starting the VoIP service, initializing a timer unit; when a frame of an access category being set up as a trigger-enabled state is not transmitted to the AP, determining whether the VoIP service call is terminated or not; when it is determined that the VoIP service call is not terminated and when a value of the timer exceeds a predetermined timer maximum value, transmitting the trigger frame to the AP; and receiving the buffered data from the AP receiving the trigger frame. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A method for controlling power of a terminal supporting a voice over internet protocol (VolP) service in a wireless communication system, comprising:
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when a Vol P service call is not set up, receiving a beacon frame from an access point (AP), analyzing a traffic indication message included in the beacon frame, and determining whether data are buffered or not in the AP; when the AP has the buffered data, transmitting a trigger frame to the AP; and receiving the buffered data from the AP receiving the trigger frame, wherein the method further comprises; determining whether an End of Service Period (EOSP) field is set up or not when the buffered data is received from the AP; terminating receipt of the buffered data when the ESOP field is set up; and waiting receipt of a next beacon frame. - View Dependent Claims (13, 14)
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Specification