Page 76 - DCAP311_DCAP607_WIRELESS_NETWORKS

Wireless Networks

Notes Here are some tips on how to avoid interference from Bluetooth devices:

z z Manage the use of RF devices? One way to reduce the potential for interference is to
regulate the types of RF devices within your home or office. In other words, establish your
own private regulatory body for managing unlicensed RF devices. The extreme measure
would be to completely ban the use of Bluetooth; however, that is not practical or even
possible in all cases. For example, you can’t feasibly prohibit the use of Bluetooth in public
areas of large offices. For private applications, you could set company policies to limit the
use of Bluetooth to specific applications, such as synchronizing PDAs to desktops.

z z Ensure adequate 802.11 coverage? Strong, healthy 802.11 signals throughout the coverage
areas reduce the impact of the Bluetooth signals. If wireless LAN transmissions become too
weak, the interfering Bluetooth signals will be more troublesome. Perform a thorough RF
site survey, and determine the appropriate location for access points.
z z Move to the 5 GHz band? If none of the preceding steps solve the problem, consider using
a 5 GHz wireless LAN such as 802.11a. You can completely avoid RF interference in this
band? at least for the foreseeable future.

Self-Assessment

Fill in the blanks:
1. The basic purport of establishing ................................ is provide a communication channel
to the individuals, who want to carry their own digital devices .
2. Wireless Personal Area Network (WPAN) is based on ................................ technology.
3. The purpose of ................................ is to make the use of electric field around human beings.
4. The full impact of ................................ interference depends on the utilization and proximity
of Bluetooth devices.
5. ................................ was the first research scientist to introduce the idea of Personal Area
Network (PAN).

6. Wireless PAN (Personal Area Network) is connected to the wired PAN (Personal Area
Network) system either using ................................



Case Study Wireless LAN
The Situation
Prior to their implementation of a Meru wireless LAN, Greene County Public Schools
(GCPS) had a wireless network system that wasn't “making the grade.” Their legacy
system consisted of mobile carts within each of the schools which were equipped with
low-end Linksys® wireless routers. Because of this system configuration, wireless access
was only active within the rooms where the carts were connected.
Difficulty of Use and Technology Adoption. Operating under the old system, teachers
found the process of connecting a class to the wireless carts difficult and disruptive. At
times, they were unable to connect to the devices correctly. The cumbersome nature of the
process led to dampened enthusiasm for the system which adversely affected GCPS' efforts
to use the technology for instructional purposes.
System Management As GCPS' legacy wireless network grew over time, it became
increasingly more disparate. Consequently, the IT team found themselves lacking an
Contd...

70 LOVELY PROFESSIONAL UNIVERSITY