Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Impact of Satellite Communications over Mobile Networks: An
  Experimental Analysis   Future telecommunication systems are expected to co-exist with different
backhauling nodes such as terrestrial or satellite systems. Satellite
connectivity can add flexibility to backhauling networks and provide an
alternative route for transmission. This paper presents experimental
comparisons of satellite and terrestrial cellular networks and evaluates their
performances in terms of different Key Performance Indicators (KPIs) including
Channel Quality Index (CQI), Modulation Coding Scheme (MCS) index, Downlink
throughput, Frame Utilization (FU) and number of Resource Block (RB)
utilization ratios. Our experimental satellite network system uses a real
satellite backhaul deployment and works in Ka band (with two specific sub-bands
on 19 Ghz in downlink and 29 Ghz in uplink). As a benchmark, we compare our
system with live terrestrial network in which backhaul connection is cellular
backhaul. Our experiments reveal three main observations: First observation is
that there exists FU and number of RB utilization problems in the satellite
link even though there exists a single test user equipment (UE) with high CQI
and MCS index values. Second observation is that in satellite link relatively
low number of Protocol Data Units (PDUs) are generated at Radio Link Controller
(RLC) layer compared to the Packet Data Convergence Control (PDCP) layer.
Finally, our third observation concludes that the excessive existence of PDCP
PDUs can be due to existence of General Packet Radio Service (GPRS) Tunneling
Protocol-User Plane (GTP-U) accelerator where an optimal balance between the
caching size and the number of UEs using satellite eNodeB is needed. For this
reason, our experimental results reveal the existence of a trade-off between
the supported number of users on satellite link and the GTP-U acceleration
rate.

21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
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The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an