Aironet PCI4810B Guide de l'utilisateur télécharger pdf (Page 39)

Section 2: Using the WinDGS Utilities

Setting this to a large value will decrease the available

bandwidth whenever interference is encountered, but

will make the system more immune to interference and

collisions. Refer to the IEEE 802.11 Standard for more

information on the RTS/CTS mechanism.

Advanced (Ad Hoc/IBSS)

In Ad Hoc Mode, you can also modify the following

parameters:

• Channel

• Beacon Period

• Wake Duration

Channel

This parameter specifies the channel identifier the unit

will use if it must start its own network. For all other situ-

ations, the radio will scan for the proper frequency. See

Appendix C for channel identifier parameters.

Beacon Period

This parameter specifies the duration between beacon

packets that are used by IEEE 802.11 systems to

synchronize the “hops” (change to another frequency).

The beacon packet contains timing information and hop

pattern information that is broadcast over the airwaves.

Any station that can hear the beacon packet can then

synchronize their internal timer so that it can hop at the

correct time. The default beacon period is one-half of

the dwell period so two beacons are transmitted per

hop dwell period (default is 100 Kµsec). Refer to the

IEEE 802.11 Standard for more information on the

timing and scanning mechanism.

Wake Duration

This parameter specifies the amount of time per Hop

Dwell Period that the adapter stays awake listening for

data packets. This is only used in Power Save Mode.

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Aironet PCI4810B Guide de l'utilisateur Page 39