| 摘要 |
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. |
