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INFOCOM
2008
IEEE

A Measurement Study of Multiplicative Overhead Effects in Wireless Networks

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A Measurement Study of Multiplicative Overhead Effects in Wireless Networks
—In this paper, we perform an extensive measurement study on a multi-tier mesh network serving 4,000 users. Such dense mesh deployments have high levels of interaction across heterogeneous wireless links. We find that this heterogeneous backhaul consisting of data-carrying (forwarding) links and nondata-carrying (non-forwarding) links creates two key effects on performance. First, we show that low-rate management and control packets can produce a disproportionally large degradation in data throughput. We define a metric for this effect called Wireless Overhead Multiplier and use it to quantify the impact of MAC and PHY mechanisms on the the throughput degradation. Surprisingly, we show that these multiplicative effects are primarily driven by the non-forwarding links where, in the worst case, data packets lose physical layer capture to the overhead, yielding disproportionate throughput degradation. Finally, we show that when data flows contend in this worst-case scenario, the loss...
Joseph Camp, Vincenzo Mancuso, Omer Gurewitz, Edwa
Added 31 May 2010
Updated 31 May 2010
Type Conference
Year 2008
Where INFOCOM
Authors Joseph Camp, Vincenzo Mancuso, Omer Gurewitz, Edward W. Knightly
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