Yi Li, Lili Qiu, Yin Zhang, Ratul Mahajan, Zifei Zhong, Gaurav Deshpande, and Eric Rozner
–We highlight two fundamental problems that
degrade the throughput of wireless mesh networks today.
First, severe performance degradation can occur when
sources send more trafﬁc than what the network can support. The degradation can be sharp even in a simple
setting of a single ﬂow that traverses a network of two
links. Second, current routing protocols fail to identify
high throughput routing paths even when they exist. The
underlying culprit in both cases is interference that is fundamental to wireless networks.
As a ﬁrst step towards a solution, we develop a novel
approach to systematically account for and control interference in the network. Our approach uses (an approximation of) a formal model of interference to estimate the
maximum rate at which ﬂows can safely send trafﬁc without overloading the network. Simulation and testbed experiments show that it can improve network throughput
by as much as 50-100% in some conﬁgurations.
Publisher Association for Computing Machinery, Inc.
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