IEEE 802.11n dual band access points for boosting the performance of heterogeneous WiFi networks
Proceedings of the 8th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
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802.11n-based Wireless Local Area Networks (WLANs) are likely to be used in a network that also accommodates other legacy devices. This heterogeneous deployment of different technologies in the same area raises a legitimate question about the effect of legacy nodes on the 802.11n high throughput ones and consequently on the overall network performance. This paper presents results of empirical experiments for studying and providing insight on the mutual impact of legacy 802.11bg devices and 802.11n-based devices when they share the same network. The results show that high throughput devices only provide the specified objective rates when they operate independently from legacy devices. Hence, coexistence mechanisms are crucial for the network to achieve the desired performance.