Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Fundamental Trade-offs of Device-to-Device Communications in Large
  Wireless Networks   This paper studies the gains, in terms of served requests, attainable through
out-of-band device-to-device (D2D) video exchanges in large cellular networks.
A stochastic framework, in which users are clustered to exchange videos, is
introduced, considering several aspects of this problem: the video-caching
policy, user matching for exchanges, aspects regarding scheduling and
transmissions. A family of \emph{admissible protocols} is introduced: in each
protocol the users are clustered by means of a hard-core point process and,
within the clusters, video exchanges take place. Two metrics, quantifying the
"local" and "global" fraction of video requests served through D2D are defined,
and relevant trade-off regions involving these metrics, as well as
quality-of-service constraints, are identified. A simple communication strategy
is proposed and analyzed, to obtain inner bounds to the trade-off regions, and
draw conclusions on the performance attainable through D2D. To this end, an
analysis of the time-varying interference that the nodes experience, and tight
approximations of its Laplace transform are derived.

9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg