Ahmad Showail

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In wireless sensor networks, data transmission reliability is a fundamental challenge due to several physical constraints such as interference, power consumption , and environmental effects. In current wireless sensor implementations, a single bit error requires retransmitting the entire frame. This incurs extra processing overhead and power consumption,(More)
—In this paper, we analyze the impact of large, persistently-full buffers ('bufferbloat') on various network dynamics in IEEE 802.11n wireless networks. The bufferbloat problem has mostly been studied in the context of wired networks. We study the impact of bufferbloat on a variety of wireless network topologies, including wireless LAN (WLAN) and multi-hop(More)
Choosing the right buffer size in Wi-Fi networks is challenging due to the dynamic nature of the wireless environment. Over buffering or 'bufferbloat' may produce unacceptable end-to-end delays, while static small buffers may limit the performance gains that can be achieved with various 802.11n enhancements, such as frame aggregation. We propose WQM, a(More)
—Frame aggregation is a major enhancement in the IEEE 802.11 family to boost the network performance. The increasing awareness about energy efficiency motivates the rethink of frame aggregation design. In this paper, we propose a novel Green Frame Aggregation (GFA) scheduling scheme that optimizes the aggregate size based on channel quality in order to(More)
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