Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimizing the Medium Access Control in Multi-hop Wireless Networks   We study the problem of geometric optimization of medium access control in
multi-hop wireless network. We discuss the optimal placements of simultaneous
transmitters in the network and our general framework allows us to evaluate the
performance gains of highly managed medium access control schemes that would be
required to implement these placements. In a wireless network consisting of
randomly distributed nodes, our performance metrics are the optimum
transmission range that achieves the most optimal tradeoff between the progress
of packets in desired directions towards their respective destinations and the
total number of transmissions required to transport packets to their
destinations. We evaluate ALOHA based scheme where simultaneous transmitters
are dispatched according to a uniform Poisson distribution and compare it with
various grid pattern based schemes where simultaneous transmitters are
positioned in specific regular patterns. Our results show that optimizing the
medium access control in multi-hop network should take into account the
parameters like signal-to-interference ratio threshold and attenuation
coefficient. For instance, at typical values of signal-to-interference ratio
threshold and attenuation coefficient, the most optimal scheme is based on
triangular grid pattern and, under no fading channel model, the most optimal
transmission range and network capacity are higher than the optimum
transmission range and capacity achievable with ALOHA based scheme by factors
of two and three respectively. Later on, we also identify the optimal medium
access control schemes when signal-to-interference ratio threshold and
attenuation coefficient approach the extreme values and discuss how fading
impacts the performance of all schemes we evaluate in this article.

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The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph