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\begin{document}

\title{Evaluation of network centric frequency diversity admission strategies
in a rain affected satellite network}



\author[1]{Adrian Woodrough}%
\author[2]{john schormans}%
\affil[1]{Inmarsat Global Limited}%
\affil[2]{Queen Mary University of London}%


\vspace{-1em}



  
  \date{June 13, 2024}


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\begin{abstract}
To meet the increased bandwidth demand from remote locations, new
satellites are being launched to allow networks to operate at higher
frequencies (i.e., Ka-band -- 27.0GHz - 40.0 GHz and V-band 40.0GHz --
75GHz). At these frequencies high availability is challenged by rain
attenuation. Consequently, satellite network operators are offering
hybrid solutions where, during a rain outage, traffic is moved to a
lower frequency secondary heterogeneous satellite network not affected
by rain.~ ~This paper evaluates a mobile and network centric handover
and admission strategy using a bespoke simulation model of a rain
affected star topology hybrid satellite network with primary network
operating on Ka band and secondary satellite network operating at a
lower frequency. ~ ~Results show that a network centric prioritised
queue-based admission strategy provides a reduction in handover failure
probability of about 5\% without extra capacity being made available for
the handover of traffic to the secondary network. When queue-based
admission is used in combination with adding extra capacity in the
secondary satellite network a reduction in handover failure probability
of nearly 30\% was achieved.~ ~However, when more capacity is made
available in the secondary network, the advantages of the network
centric queue-based admission strategy slowly disappear with added
capacity. This means that operators have a clear choice based on whether
they believe that their secondary network has sufficient spare capacity,
or whether in fact this is unlikely and therefore the extra cost of a
queue-based admission strategies should be weighed against loss of
revenue due to lost connections.%
\end{abstract}%



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\verb`WileyPaper Submitted v1.0.docx`  available at \url{https://authorea.com/users/519122/articles/593001-evaluation-of-network-centric-frequency-diversity-admission-strategies-in-a-rain-affected-satellite-network}

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