Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards Mobility-Aware Proactive Caching for Vehicular Ad hoc Networks   Harnessing information about the user mobility pattern and daily demand can
enhance the network capability to improve the quality of experience (QoE) at
Vehicular Ad-Hoc Networks (VANETs). Proactive caching, as one of the key
features offered by 5G networks, has lately received much interest. However,
more research is still needed to convey large-sized multimedia content
including video, audio and pictures to the high speed moving vehicles. In this
paper, we study the gains achieved by proactive caching in Roadside Units
(RSUs) where we take into consideration the effect of the vehicle velocity on
the optimal caching decision. Information about the user demand and mobility is
harnessed to cache some files in RSUs, which will communicate with vehicles
traversing along the visited roads before the actual demand. Our main objective
is to minimize the total network latency. Towards this objective, we formulate
two optimization problems for non-cooperative and cooperative caching schemes
to find the optimal caching policy to decide which files to be cached by the
RSUs. Due to the complexity of these problems, we propose a sub-optimal caching
policy for each scheme. We compare the performance of the optimal caching
policy to that of the sub-optimal caching policy. Numerical results show that
proactive caching has a significant performance gain when compared to the
baseline reactive scenario. Moreover, results reveal that the cooperative
caching scheme is more efficient than the non-cooperative scheme.

5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph