Analysis of IEEE 802.11 DCF in Non-saturated Conditions

The IEEE 802.11 standard defines the physical layer and media access control(MAC) layer for a wireless LAN and this standard is largely being deployed. The primary MAC technique of 802.11 is a random access scheme based on carrier sense multiple access with collision avoidance(CSMA/CA) protocol and is called distributed coordination function(DCF). We propose a Markov model for the behavior of a given station governed by DCF under non-saturated traffic conditions and evaluate the channel throughput. We validate the accuracy of the proposed model through simulation.

1. Introduction

2. DCF Review

3. Model Development

4. Performance Analysis

5. Model Validation

6. Concluding Remarks

References

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