Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytical Model for IEEE 802.15.4 Multi-Hop Networks with Improved
  Handling of Acknowledgements and Retransmissions   The IEEE 802.15.4 standard allows for the deployment of cost-effective and
energy-efficient multi-hop networks. This document features an in-depth
presentation of an analytical model for assessing the performance of such
networks. It considers a generic, static topology with Poisson distributed
data-collection as well as data-dissemination traffic. The unslotted CSMA/CA
MAC layer of IEEE 802.15.4 is closely modeled as well as an enhanced model of
the neighborhood allows for consideration of collisions of packets including
interferences with acknowledgements. The hidden node problem is taken into
account as well as a formerly disregarded effect of repeated collisions of
retransmissions. The model has been shown to be suitable to estimate the
capacity of large-scale multi-hop networks.

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The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
2
The categories of this paper are: math
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an