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Wireless Broadband Internet
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Woosh Wireless Broadband
Plans
Woosh Wireless Coverage available
in Central Christchurch, Auckland, Wellington and
Southland. |
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Elevate |
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1 GB |
$29.95
per month
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Express
5 |
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5 GB |
$39.95
per month
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Express
10 |
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10 GB |
$49.95
per month
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Express
20 |
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20 GB |
$59.95
per month
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Wireless Broadband Internet
description
Wireless Internet
Data is sent and received through the air using encoded radio
frequencies. A pocket sized modem or PC Card "speaks" to the
wireless network and the wireless network "speaks" to the
Internet.
Woosh offers wireless broadband in New Zealand, Xtra and Vodafone
are also doing a similar program.
The typical Wi-Fi setup contains one or more Access Points (APs)
and one or more clients. An AP broadcasts its SSID (Service Set
Identifier, "Network name") via packets that are called beacons,
which are broadcast every 100 ms. The beacons are transmitted at 1
Mbit/s, and are of relatively short duration and therefore do not
have a significant influence on performance. Since 1 Mbit/s is the
lowest rate of Wi-Fi it assures that the client who receives the
beacon can communicate at least 1 Mbit/s. Based on the settings
(e.g. the SSID), the client may decide whether to connect to an
AP. Also the firmware running on the client Wi-Fi card is of
influence. Say two APs of the same SSID are in range of the
client, the firmware may decide based on signal strength to which
of the two APs it will connect. The Wi-Fi standard leaves
connection criteria and roaming totally open to the client. This
is a strength of Wi-Fi, but also means that one wireless adapter
may perform substantially better than the other. Since Wi-Fi
transmits in the air, it has the same properties as a non-switched
ethernet network. Even collisions can therefore appear like in
non-switched ethernet LAN's.
A wireless LAN or WLAN is a wireless local area network, which is
the linking of two or more computers without using wires. It uses
radio communication to accomplish the same functionality that a
wired LAN has. WLAN utilizes spread-spectrum technology based on
radio waves to enable communication between devices in a limited
area, also known as the basic service set. This gives users the
mobility to move around within a broad coverage area and still be
connected to the network.
This technology is becoming more and more popular, especially with
the rapid emergence of small portable devices such as PDAs
(personal digital assistants). |
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