Aironet PCI4810B Guida Utente Scaricare il pdf (Pagina 35)

Section 2: Using the WinDGS Utilities

sages. The Aironet 4800B Series Wireless LAN

Adapter must wake up periodically and poll the Access

Point to see if there are any buffered messages waiting.

The PCI/ISA Card can request each message and then

go back to sleep.

Fast Power Save Mode

Fast Power Save Mode (Fast PSP Mode) switches

between PSP and CAM based on network traffic. When

retrieving a high number of packets, Fast PSP Mode

will switch to CAM to retrieve the packets. Once the

packets are retrieved, it switches back to PSP.

Maximum Power Save Mode

Maximum Power Save Mode (Max PSP Mode) can only

be used in conjunction with PSP or Fast PSP Modes.

This mode allows the Aironet 4800B Series Wireless

LAN Adapter to conserve the most power while still

maintaining an infrastructure connection. Using Max

PSP Mode conserves power but will reduce throughput.

RF Network Parameters

RF Network Parameters include:

• Fragment Threshold: This parameter defines a

threshold above which the RF packet will be split up or

fragmented. If a packet is fragmented or transmission

of part of it is interfered with, only the portion that was

unsuccessful would need to be re-sent. The throughput

will generally be lower for fragmented packets since the

fixed packet overhead consumes a higher portion of the

RF bandwidth.

• Data Retries: This parameter defines the number of

times a packet will be re-sent if the initial transmission

is unsuccessful. If the network protocol automatically

re-tries itself, set this to a small value. A “bad” packet

status will be sent up the protocol stack more quickly so

the application can re-transmit the packet.

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Aironet PCI4810B Guida Utente Pagina 35