<% dim mm as string = "February" dim dd as string = "01" dim yyyy as string = "2007" dim status as string = "1" %> PCCW eNewsletter

802.11, 1997 - the original 2Mbit/s, 2.4GHz version

802.11a, 1999 - 54 Mbit/s, 5 GHz standard physical layer

802.11b, 1999 - 11Mbit/s, 2.4GHz physical layer

802.11c - 802.1D standard MAC layer bridge operation procedures

802.11d - International country-to-country roaming extension

802.11e - service quality enhancement.

802.11f - interoperability.

802.11g - 54Mbit/s, 2.4GHz physical layer

802.11h - spectrum and transmit power management extension via 5GHz indoor and outdoor channel

802.11i - authentification and security enhancement.

802.11n - higher throughput improvements using 802.11a's MIMO extension

In addition to the IEEE standards above, a 2.4GHz technology called IEEE802.11b+ uses PBCC (Packet Binary Convolutional Code) to provide data transfer speeds of 22Mbit/s. Unfortunately, IEEE802.11b+ is not an open IEEE standard but a proprietary technology owned by Texas Instruments. Other standards include 802.11g+, offering data transfer speeds of 108Mbit/s on a IEEE802.11g platform. Like 802.11b+, this is a non-open standard technology. Another technology introduced by Atheros, a Wi-Fi network IC manufacturer, is known as SuperG.

Establishing a citywide Wi-Fi network to keep us competitive

Private sector best equipped to develop citywide Wi-Fi

New trends in citywide Wi-Fi

Wireless Technology Industry Association champions citywide Wi-Fi