Patent ID: 7657248

Claim:
A wireless Local Area Network (LAN) system for activating a wireless terminal which is in a shutdown state or a standby state, said wireless LAN system employing an encryption key that is periodically changed, the wireless LAN system comprising: an access point; and a remote management terminal configured to transmit a first activation instruction to the access point to activate the wireless terminal; said access point comprises a control circuit which, in response to receiving the transmitted first activation instruction, transmits a second activation instruction to said wireless terminal while the wireless terminal is in the shutdown state or the standby state; the second activation instruction comprising an unencrypted beacon; the control circuit configured to transmit the unencrypted beacon at a predetermined regular rate during a normal mode of operation; said control circuit transmits the second activation instruction to said wireless terminal by changing a transmission interval of said unencrypted beacon; said unencrypted beacon is a frame for transmitting a Service Set Identifier (SSID) of a Basic Service Area (BSA) in a wireless section of the wireless LAN system which is encrypted using the encryption key.