Dell 6.2 manual Term

Term

802.11e

802.11g

802.11h

802.11i

802.11j

802.11k

802.11n

802.11m

Definition

Configuration can be fine-tuned at the Media Access Control layer (MAC layer) level to comply with the rules of the country or district in which the network is to be used. Rules subject to variation include allowed frequencies, allowed power levels, and allowed signal bandwidth. 802.11d facilitates global roaming.

A proposed adaptation to the 802.11a and 802.11b specifications that enhances the

802.11Media Access Control layer (MAC layer) with a coordinated time division multiple access (TDMA) construct, and adds error-correcting mechanisms for delay-sensitive applications such as voice and video. The 802.11e specification provides seamless interoperability between business, home, and public environments such as airports and hotels and offers all subscribers high-speed Internet access with full-motion video, high-fidelity audio, and Voice over IP (VoIP).

Offers transmission over relatively short distances at up to 54 megabits per second (Mbps), compared with the 11 Mbps theoretical maximum of 802.11b. 802.11g employs orthogonal frequency division multiplexing (OFDM), the modulation scheme used in 802.11a, to obtain higher data speed. Computers or terminals set up for 802.11g can fall back to speeds of 11 Mbps, so that 802.11b and 802.11g devices can be compatible within a single network.

Intended to resolve interference issues introduced by the use of 802.11a in some locations, particularly with military radar systems and medical devices. Dynamic frequency selection (DFS) detects the presence of other devices on a channel and automatically switches the network to another channel if and when such signals are detected. Transmit power control (TPC) reduces the radio-frequency (RF) output power of each network transmitter to a level that minimizes the risk of interference.

Provides improved encryption for networks that use 802.11a, 802.11b, and 802.11g standards. Requires new encryption key protocols, known as Temporal Key Integrity Protocol (TKIP) and Advanced Encryption Standard (AES). Other features include key caching, which facilitates fast reconnection to the server for users who have temporarily gone offline, and pre-authentication, which allows fast roaming and is ideal for use with advanced applications such as Voice over Internet Protocol (VoIP).

Proposed addition to the 802.11 family of standards that incorporates Japanese regulatory extensions to 802.11a; the main intent is to add channels in the radio- frequency (RF) band of 4.9 GHz to 5.0 GHz. WLANs using 802.11j will provide for speeds of up to 54 Mbps, and will employ orthogonal frequency division multiplexing (OFDM). The specification will define how Japanese 802.11 family WLANs and other wireless systems, particularly HiperLAN2 networks, can operate in geographic proximity without mutual interference.

Proposed standard for how a WLAN should perform channel selection, roaming, and transmit power control (TPC) in order to optimize network performance. In a network conforming to 802.11k, if the access point (AP) having the strongest signal is loaded to capacity, a wireless device is connected to one of the underutilized APs. Even though the signal may be weaker, the overall throughput is greater because more efficient use is made of the network resources.

Wireless networking standard to improve network throughput over the two previous standards 802.11a and 802.11g with a significant increase in the maximum raw data rate from 54 Mbit/s to 600 Mbit/s with the use of four spatial streams at a channel width of 40 MHz.

An initiative to perform editorial maintenance, corrections, improvements,

864 Acronyms and Terms Dell PowerConnect W-Series ArubaOS 6.2 User Guide