EEE 538 Communication Network Analysis

Homework 1

Due Friday, 12 March 17:30, in my mailbox at 2. floor

1. Problem 3.4 from Bertsekas and Gallager

2. Problem 3.6 from Bertsekas and Gallager

3. Write a simulation program to compare stop-and-wait and go-back 7 protocol in terms of the overall throughput (bits/sec) over a link with the following properties:

packet sizes = ack. packet sizes =  1 Kbits deterministic

propagation delay = variable (0.01 ms, 0.1ms, 1 ms, 10ms, 100ms)

frame loss probability = variable (%0.1, %0.01) this is the one way frame loss probability

processing time negligible

control overhead = 100 bits

 link rate = 10 Mbits/s

Provide a figure that describes the relationship between throughput vs. propagation delay and frame loss probability for the two different schemes.