Method and apparatus for power saving of terminal in wireless lan system

An access point (AP) apparatus for saving power consumption in a wireless LAN system, comprising:

• a wireless processor configured to down-converte a band of a received wireless signal and up-converte a band of a signal to be transmitted;
• a modem configured to demodulate and decode of a signal received by the wireless processor and encode, modulate, and output a signal to be transmitted;
• a data processor configured to divide a size of data to be transmitted depending on the number of bands to be transmitted and the band;
• a memory configured to store whether a channel bonding power saving control function received from terminals is activated and mode information;
• and
• a controller configured to control a generation and a transmission of a control frame including information for the channel bonding power saving control function of the access point, control a terminal to check whether the channel bonding power saving control function is in an activated state and a mode by checking the memory if the AP has data to transmit to the terminal, and control to configure a frame for transmitting data to be transmitted in a channel bonding scheme if the terminal is in the activated state of the channel bonding power saving control function and in a dynamic mode and transmit the frame to the terminal.

A method for transmitting and receiving data for power saving of a terminal in a wireless LAN system, comprising:

• setting first information whether a channel bonding saving control function is possible, and mode information if a control frame including channel bonding power saving control function information is received;
• transmitting first information and the mode information to a access point (AP);
• checking, if a frame is received during hearing only a primary band, whether the received frame is an initial frame;
• and
• performing upward switching in a bandwidth required in the AP if the received frame is the initial frame.

An apparatus for transmitting and receiving data for power saving of a terminal in a wireless LAN system, comprising:

• a wireless processor configured to down-convert a band of a received wireless signal and up-converte a band of a signal to be transmitted;
• a modem configured to demodulate and decode of a signal received by the wireless processor and encode, modulate, and output a signal to be transmitted;
• a data reconfiguration unit configured to reconfigure received data;
• a memory configured to store information for a channel bonding power saving control provided from an access point (AP) and information on whether a channel bonding power saving control function of the terminal is possible and mode information;
• a controller configured to:
• control to set a first information whether the channel bonding saving control function is possible and the mode information in the memory and the mode information if a control frame including channel bonding power saving control function information is received,
• control to transmit the first information and the mode information;
• control to check, if a frame is received during to control the wireless processor to hear only a primary band, whether the received frame is an initial frame, and
• control to perform the wireless processor to upward switch to a bandwidth required by the AP if the received frame is the initial frame.