Week 3 iLab Report
DeVry University
NETW360: Wireless Technologies and Services


Submitted to:

Mixed 11b/11g WLAN Performance
Specific questions from iLab
• Answer each of the following questions using the sequence and data from the iLab instructions. Answer all questions in full college-level sentences.

1. In your opinion, what is the purpose of our dropping the transmit power to such a low level?
11b/11g uses DSSS modulation techniques to hide signal by transmitter at low power that is difficult to detect in the presence of noise called spread spectrum.

2. What do access point connectivity statistics collected for the roaming station show?
The Access Point Connectivity statistics collected show that the data remains the same. AP Connectivity remained constant throughout the 30 seconds of the simulation.

3. What do you think the Wireless LAN control traffic received by the roaming 11b node when it is in the engineering building is composed of?
According to the lab help files it contains random outcomes for the size of generated packets

4. How much did our roaming node reduce the total throughput in our heavily loaded WLAN?

When the simulation started, throughput was at 25,500,000 bits/sec. At 13 seconds which is when the roaming node entered the engineering building, throughput dropped to about 21,600,000 bits/sec at a loss of 3,900,000 bits/sec. At it left (at around 18 seconds), throughput went up to 25,500,000 bits/sec.

5. What caused this reduction in “goodput” on the 11g WLAN?
The interference of the roaming node most likely caused it as we see the throughput drop when it enters the rnage of the 11q WLAN.

General questions concerning mixing 11b and 11g clients
Guidelines: Answer each of the following questions using knowledge gained from the iLab, readings from the textbook, and individual research on the Web. Answer all questions in full...