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D-48 Psion Teklogix 9160 G2 Wireless Gateway User Manual

Appendix D: Glossary

802.11i

IEEE 802.11i is a comprehensive IEEE standard for security in a wireless local area

network (WLAN) that describes Wi-Fi Protected Access 2 (WPA2). It defines enhancements

to the MAC Layer to counter the some of the weaknesses of WEP. It incorporates stronger

encryption techniques than the original Wi-Fi Protected Access (WPA), such as Advanced

Encryption Standard (AES).

The original WPA, which can be considered a subset of 802.11i, uses Temporal Key

Integrity Protocol (TKIP) for encryption. WPA2 is backwards-compatible with products

that support the original WPA

IEEE 802.11i / WPA2 was finalized and ratified in June of 2004.

802.11j

EEE 802.11j standardizes chipsets that can use both the 4.9 and 5 GHz radio bands

according to rules specified by the Japanese government to open both bands to indoor,

outdoor and mobile wireless LAN applications. The regulations require companies to adjust

the width of those channels. IEEE 802.11j allows wireless devices to reach some previously

unavailable channels by taking advantage of new frequencies and operating modes. This is

partially an attempt to mitigate the crowding on the airwaves, and has tangential

relationships to IEEE 802.11h.

802.11k

IEEE 802.11k is a developing IEEE standard for wireless networks (WLANs) that helps

auto-manage network Channel selection, client Roaming, and Access Point (AP)

utilization. 802.11k capable networks will automatically load balance network traffic across

APs to improve network performance and prevent under or over-utilization of any one AP.

802.11k will eventually complement the 802.11e quality of service (QoS) standard by

ensuring QoS for multimedia over a wireless link.

802.1p

802.1p is an extension of the IEEE 802 standard and is responsible for QoS provision. The

primary purpose of 802.1p is to prioritize network traffic at the data link/ MAC layer. 802.1p

offers the ability to filter multicast traffic to ensure it doesn’t increase over layer 2 switched

networks. It uses tag frames for the prioritization scheme.

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Psion Teklogix 9160 G2 Manual de usuario Pagina 398