Title:
無線LANシステム、無線LANアクセスポイント、無線LAN端末及びそれらに用いる起動制御方法
Document Type and Number:
Japanese Patent JP4757464
Kind Code:
B2
Abstract:
To provide a wireless system in which a terminal that is shutdown or on in standby can be activated from a remote site in an environment where connection is attested by an authentication server, using security technology for wireless LAN, a different encryption key from other terminals is employed in the communication, and the encryption key is periodically renewed. An access point controls a beacon transmission interval control part by recognizing a terminal activation signal from a management terminal. The beacon transmission interval control part controls the transmission interval of beacon by switching between a normal operation mode and a patterned transmission interval mode. A beacon transmission interval detection circuit of a terminal monitors interval between beacons, and upon detecting patterned beacons, outputs a detection signal. A wireless module receives the detection signal from the beacon transmission interval detection circuit, and then makes an activation request to the terminal.
More Like This:
Inventors:
Ken Hodoshima
Application Number:
JP2004237827A
Publication Date:
August 24, 2011
Filing Date:
August 18, 2004
Export Citation:
Assignee:
NEC Infrontia Co., Ltd.
International Classes:
H04W84/12; H04W12/00; H04W88/08; H04W12/06; H04W52/02; H04W88/02
Domestic Patent References:
| JP200496285A | ||||
| JP1069448A |
Attorney, Agent or Firm:
▲柳▼川 信