Table of Contents
Performance Evaluation of TCP over WLAN 802.11 with the Snoop Performance Enhancing Proxy
Roadmap
Problem formulation
Project goals
TCP retransmission policy
TCP transmission window
Wireless LAN using TCP
Adding the Snoop agent
Snoop protocol
OPNET implementation
Two additional protocol layers
PEG process model
Packet error generator: PEG
Snoop agent process model
Snoop cache
Cache functions
Snoop connection table
Snoop_Data()
Snoop_Ack()
TCP parameters
Scenario 1: Single mobile upload
Scenario 1: parameters
Upload response time
Packet caching
Congestion window size
Sequence numbers
Retransmission timeout
Scenario 2: Multiple mobile downloads
Scenario 2: parameters
Download response time
Scenario 3: Multiple mobile uploads
Scenario 3: parameters
Upload response time
Conclusions
References
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Author: Chi-ho Ng, Jack Chow, and Ljiljana Trajkovic
Email: ljilja@sc.sfu.ca
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