IxWLAN User Guide, Release 6.20
4-51
The Web-Based User Interface
IxWLAN Side Bar
NOTES:
When the Power Management mode is set to
Active
, IxWLAN remains in the
awake state at all times. When the Power Management mode is set to
Power
save
, IxWLAN enters a dozing state until awakened by the listen interval. When
dozing:
•
IxWLAN does not accept WLAN frames transmitted to any vSTA.
•
IxWLAN awakens at each listen interval to receive the next beacon and poll
for frames buffered for any vSTA in accordance with the 802.11 Power Man-
agement needs.
•
IxWLAN awakens at DTIM intervals to receive DTIM beacons when buffered
broadcast/multicast frames are indicated.
While in either state, any WLAN frames to be transmitted from any vSTA may be
immediately placed into the Transmit Queue for transmission by the WLAN
interface. Any transmission from any vSTA indicates the IxWLAN current Power
Management mode.
The beacon interval is determined by the System Under Test, usually by some
user-configurable parameter. IxWLAN receives beacons sent by the System
Under Test. A typical beacon rate is one every 100 Time Units. An 802.11 Time
Unit is defined as 1024 ms. So, the beacon rate would be one every 102.4 ms,
or about 10 per second. As an example, if the Power Management Mode is set
to
Power Save
and the Power Save Listen Interval
is set to
3
, IxWLAN wakes
up about every 307.2 ms to poll for frames queued in the System Under Test.
Содержание IxWLAN
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