Appeal 2007-1758
Application 10/004,786
Appellants’ claimed invention relates to a power saving method in a
mobile terminal which includes a wireless Network Interface Card (NIC) for
accessing a wireless LAN (WLAN) having an access point (AP). Upon a
request by the mobile terminal for a transition from an active to a less active
state, the NIC issues a request to the AP to be entered into a WLAN sleep
state. After receiving acknowledgement of the request from the AP, the
mobile terminal enters the WLAN sleep state.
Claim 1 is illustrative of the invention and reads as follows:
1. Method for power saving in a mobile terminal comprising a
wireless Network Interface Card (NIC) for accessing a wireless LAN
(WLAN) having an access point (AP), wherein the WLAN uses HIPERLAN
Type 2 or IEEE 802.11 power save procedures and wherein the mobile
terminal uses an operating system supporting a plurality of device power
states said method comprising the steps of:
the mobile terminal requesting a transition from an active state to a
less active state;
upon which request the NIC requests the AP to be entered into WLAN
sleep state; and,
on acknowledgement from the AP the mobile terminal enters WLAN
sleep state.
The Examiner relies on the following prior art references to show
unpatentability:
Chen US 5,502,724 Mar. 26, 1996
Beach US 6,067,297 May 23, 2000
van Bokhorst US 6,192,230 B1 Feb. 20, 2001
(filed Sep. 27, 1993)
Larsson US 6,463,307 B1 Oct. 8, 2002
(filed Aug. 14, 1998)
2
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