IEEE 802.11 rate adaptation: a practical approach
MSWiM '04 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Methods for restoring MAC layer fairness in IEEE 802.11 networks with physical layer capture
REALMAN '06 Proceedings of the 2nd international workshop on Multi-hop ad hoc networks: from theory to reality
WiNTECH '06 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization
Robust rate adaptation for 802.11 wireless networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Proceedings of the 12th annual international conference on Mobile computing and networking
Effects of unstable links on AODV performance in real testbeds
EURASIP Journal on Wireless Communications and Networking
Understanding the effect of access point density on wireless LAN performance
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Symphony: synchronous two-phase rate and power control in 802.11 wlans
Proceedings of the 6th international conference on Mobile systems, applications, and services
Fast track article: Backlogged queue based MAC frame aggregation
Pervasive and Mobile Computing
Towards MIMO-aware 802.11n rate adaptation
IEEE/ACM Transactions on Networking (TON)
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Wireless network emulator testbeds have become increasingly important for realistic, at-scale experimental evaluation of new network architectures and protocols. Typically, wireless network performance measurements are made at multiple layers of the wireless protocol stack, i.e. link layer, MAC layer and network layer. This study highlights the impact of layer 2 frame aggregation that is enabled by default in the software drivers for commodity wireless 802.11 devices while it is still not a part of the core 802.11 standard. Using experimental measurements, it is shown that this feature has an impact across a diverse set of wireless experiments and should be considered while comparing results. Measurements on the ORBIT testbed show that throughput measurements can vary up to a startling 25% for certain packet sizes and the variance in receiver side inter-frame delays can almost double if MAC aggregation and preset transmission opportunities are not taken into consideration. Further results for VoIP traffic show a deterioration in jitter of up to 8 times when coupled with MAC layer aggregation in 802.11.