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TCP throughput adaptation in WiMax networks using replicator dynamics.

Markos P Anastasopoulos¹, Dionysia K Petraki, Rajgopal Kannan

¹Wireless and Satellite Communications Group, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece. mark@mail.ntua.gr

IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society

|January 20, 2010

Summary

This summary is machine-generated.

This study introduces an adaptive coding and modulation (ACM) scheme to enhance TCP throughput in wireless networks. The new approach optimizes data transmission during fading periods, improving internet traffic flow.

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Area of Science:

Wireless Communications
Network Engineering
Information Theory

Background:

IEEE 802.16 (Worldwide Interoperability for Microwave Access) high-frequency bands (10-66 GHz) are suitable for wireless backhaul.
Wireless channel impairments, not congestion, primarily affect TCP performance in these networks.
A cross-layer design integrating transport and physical layers is beneficial during fading.

Purpose of the Study:

To present an adaptive coding and modulation (ACM) scheme for maximizing TCP throughput.
To address challenges in wireless backhaul networks with high internet traffic volumes.
To improve data transmission reliability and efficiency in IEEE 802.16 networks.

Main Methods:

Developed an adaptive coding and modulation (ACM) scheme for TCP throughput maximization.
Utilized a mathematical model equivalent to replicator dynamics for traffic modulation and coding.
Investigated the stability and convergence speed of the ACM scheme.

Main Results:

The proposed ACM scheme's stability was mathematically proven.
The dependence of convergence speed on physical-layer parameters was analyzed.
Demonstrated that increased physical-layer information accelerates convergence to optimal TCP throughput.

Conclusions:

The novel ACM scheme effectively maximizes TCP throughput in wireless backhaul networks.
The cross-layer approach enhances performance during wireless channel fading.
Further optimization is achievable by integrating more physical-layer insights into the adaptive scheme.