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Changes between Version 16 and Version 17 of UserDocs/RSSI

Author:
mrenzmann (IP: 0.0.0.0)
Timestamp:
11/03/08 16:28:35 (8 years ago)
Comment:

Adjustments in response to new domain.

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  • UserDocs/RSSI

    v16 v17  
    1818== More info on RSSI == 
    1919 
    20 The 802.11 standard is designed such that the MAC and PHY layers are independent, allowing various different modulation schemes to use the same MAC layer. Communication between the management sublayers (called MLME and PLME) of the MAC and PHY layers is done using lists called service parameter lists whose members include (for the receiver side of things) received frame length, RSSI, and datarate. The lack of any absolute values for signal strength or noise floor mean that there is little choice in what to display - hence the value RSSI is used. There's a good article on this at [http://web.archive.org/web/20040405102601/http://www.wildpackets.com/elements/whitepapers/Converting_Signal_Strength.pdf wildpackets.com] ([http://madwifi.org/attachment/wiki/UserDocs/RSSI/Converting_Signal_Strength.pdf?format=raw local copy]), and another, more detailed paper by the same person on [http://www.connect802.com/download/techpubs/2004/you_believe_D100201.pdf Connect802.com] ([http://madwifi.org/attachment/wiki/UserDocs/RSSI/you_believe_D100201.pdf?format=raw local copy]). 
     20The 802.11 standard is designed such that the MAC and PHY layers are independent, allowing various different modulation schemes to use the same MAC layer. Communication between the management sublayers (called MLME and PLME) of the MAC and PHY layers is done using lists called service parameter lists whose members include (for the receiver side of things) received frame length, RSSI, and datarate. The lack of any absolute values for signal strength or noise floor mean that there is little choice in what to display - hence the value RSSI is used. There's a good article on this at [http://web.archive.org/web/20040405102601/http://www.wildpackets.com/elements/whitepapers/Converting_Signal_Strength.pdf wildpackets.com] ([http://madwifi-project.org/attachment/wiki/UserDocs/RSSI/Converting_Signal_Strength.pdf?format=raw local copy]), and another, more detailed paper by the same person on [http://www.connect802.com/download/techpubs/2004/you_believe_D100201.pdf Connect802.com] ([http://madwifi-project.org/attachment/wiki/UserDocs/RSSI/you_believe_D100201.pdf?format=raw local copy]). 
    2121 
    2222For more information on 802.11 Service Parameter Lists, and SAPs, try [http://www.google.com/search?q=802.11%20service%20parameter%20list searching the web].