Power-saving method for mobile terminal in wireless local area network

The present invention in at least one wireless local area to provide a connection service to the terminal network, the power saving method for a terminal to transition between the active mode and an idle mode in a plurality of comprises a connection node, each access node cells for such, that operating the cells of the connection node in at least two steps of grouping into a single paging area and the idle mode of the terminal is alternating between a predetermined hourly intervals for each weather condition and half a sleep state, or always vapor the steps of: determining whether the operation to an active mode in the status and, if the terminal is operating in the idle mode, and includes a process of the terminal is enabled, the idle handoff only when outside the respective paging areas. In such present invention, since the handoff occurs only when crossing the border of the paging group at the terminal is an idle mode to reduce power consumption. Wireless local area network (wireless local area network: WLAN), sleep mode (power saving mode: PSM), IP paging, idle mode (Idle Mode: IM)