Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distributed Resource Management in Downlink Cache-Enabled Multi-Cloud
  Radio Access Networks   In light of the premises of beyond fifth generation (B5G) networks, the need
for better exploiting the capabilities of cloud-enabled networks arises, so as
to cope with the large-scale interference resulting from the massive increase
of data-hungry systems. A compound of several clouds, jointly managing
inter-cloud and intra-cloud interference, constitutes a practical solution to
account for the requirements of B5G networks. This paper considers a
multi-cloud radio access network model (MC-RAN), where each cloud is connected
to a distinct set of base stations (BSs) via limited capacity fronthaul links.
The BSs are equipped with local cache storage and baseband processing
capabilities, as a means to alleviate the fronthaul congestion problem. The
paper then investigates the problem of jointly assigning users to clouds and
determining their beamforming vectors so as to maximize the network-wide energy
efficiency (EE) subject to fronthaul capacity and transmit power constraints.
This paper solves such a mixed discrete-continuous, non-convex optimization
problem using fractional programming (FP) and successive inner-convex
approximation (SICA) techniques to deal with the non-convexity of the
continuous part of the problem, and $l_0$-norm approximation to account for the
binary association part. A highlight of the proposed algorithm is its
capability of being implemented in a distributed fashion across the network's
multiple clouds through a reasonable amount of information exchange. The
numerical simulations illustrate the pronounced role the proposed algorithm
plays in alleviating the interference of large-scale MC-RANs, especially in
dense networks.

33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics