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WFS709TP ProSafe Smart Wireless Switch Software Administration Manual
14-2 Configuring WFS709TP for Voice
v1.0, June 2007
Battery Boost
Battery boost converts all multicast traffic to unicast before delivery to the client. This feature is
disabled by default. Enabling battery boost on an SSID allows you to set the DTIM interval from
10 to 100, equating to 1,000–10,000 milliseconds. This longer interval keeps associated wireless
clients from activating their radios for multicast indication and delivery, leaving them in power-
save mode longer, and thus lengthening battery life. The DTIM configuration is performed on the
WLAN, so no configuration is necessary on the client. Although the multicast-to-unicast
conversion generates more traffic, that traffic is buffered by the AP and delivered to the client
when the client emerges from power-save mode.
An associated parameter available on some clients is the Listening Interval (LI), which defines the
interval (in number of beacons) after which the client must wake to read the Traffic Indication Map
(TIM). The TIM indicates whether there is buffered unicast traffic for each sleeping client. With
battery boost enabled, the DTIM is increased but multicast traffic is buffered and delivered as
unicast. Increasing the LI can further increase battery life, but can also decrease client
responsiveness. NETGEAR recommends a DTIM setting of 10 or less for NEC FOMA N900iL
clients, and 30 or less for BlackBerry 7270 clients.
You enable the battery boost feature and set the DTIM interval in the WLAN configuration.
To enable battery boost:
1. Navigate to the Configuration > Advanced > WLAN > Advanced page.
2. Click Add to add a new location.
3. Enter a location ID in the format building.floor.plan, where each value is an integer.
4. Click Add.
5. Select the 802.11b/g or 802.11a tab to configure radio settings.
6. Select Battery Boost.
7. Configure the DTIM Period if needed.
8. Click Apply.