Ad-Hoc Network - Cabletron Systems RoamAbout Access Point Manual

Ad-Hoc Network

The only requirement for an ad-hoc network is the ability to communicate with one or more
other wireless users. To do this:
•
All PC Cards must use the same channel. You cannot change the default channel of the
RoamAbout PC Card. The default channel is listed in Table A-3 on page A-5.
•
Determine the size of the coverage area. The speed of the RoamAbout PC Card is one
factor that determines the client coverage area. Other factors include physical
obstructions and noise levels. The following is an example of the coverage area in a
semi-open environment, which is defined as work space divided by shoulder-height,
hollow wall elements. The distances in your environment may be different.
— 11 Mbit/s - 165 feet (50 meters)
— 5.5 Mbit/s - 230 feet (70 meters)
— 2 Mbit/s - 300 feet (90 meters)
— 1 Mbit/s - 375 feet (115 meters)
The faster the transmit speed, the shorter the coverage area at that speed. A client with
an 11 Mbit/s PC Card can communicate with other clients up to a distance of 375 feet
in a semi-open environment. However, only clients within the first 165 feet can
communicate at 11 Mbit/s. Clients between 165 and 230 feet communicate at 5.5
Mbit/s. Clients between 230 and 300 feet communicate at 2 Mbit/s; and clients
between 300 to 375 feet communicate at 1 Mbit/s.
If using a card other than the RoamAbout PC Card in wireless clients, refer to that
card's documentation for information about allowable distances.
•
Make sure that the computer meets the RoamAbout PC Card requirements as described
in the "System Requirements for Wireless Clients" section on page 3-8.
Designing and Implementing a Wireless Network 3-7
Ad-Hoc Network