Abdulmoneam Ali Hassan Ali

A Stochastic Geometric Approach Towards the Temporal Interference Correlation Analysis of D2D Cache Enabled Networks / Abdulmoneam Ali Hassan Ali - 2021 - 64 p. ill. 21 cm.

Supervisor: Amr El-Sherif

Thesis (M.A.)—Nile University, Egypt, 2021 .

"Includes bibliographical references"

Contents:
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Dedication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Chapters:
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Interference Management Challenges and Related Work . . . . . . 3
1.2.1 Spectrum Sharing . . . . . . . . . . . . . . . . . . . . . . . 3
1.2.2 Channel Access . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.3 Temporal Interference Correlation . . . . . . . . . . . . . . 6
1.3 Contributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Impact of Temporally Correlated Nakagami- m Interferers in D2D Cache-
Aided Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.1 Network Model . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.2 Content-based Association Policy . . . . . . . . . . . . . . 11
2.1.3 Successful Transmission Event . . . . . . . . . . . . . . . . 12
2.2 Probability of Successful Content Delivery . . . . . . . . . . . . . . 14
2.2.1 Successful Transmission at the lth time slot . . . . . . . . . 16
2.2.2 Joint Successful Transmission Probability . . . . . . . . . . 18
2.3 Simulation results . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.1 Simulation setup . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.2 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
ix
3. Impact of Content-Aware Scheduling on Successful Content Delivery . . . 26
3.1 Content-Dependent Aggregate Interference . . . . . . . . . . . . . . 26
3.2 Successful Transmission Analysis . . . . . . . . . . . . . . . . . . . 27
3.2.1 Probability of Successful Transmission in slot l . . . . . . . 28
3.2.2 Joint Successful Transmission Probability . . . . . . . . . . 31
3.3 Results and discussion of the impact of content-dependent scheduling
(CDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.3.1 Simulations setup . . . . . . . . . . . . . . . . . . . . . . . . 35
3.3.2 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.4 Fairness-based CDS (F-CDS) . . . . . . . . . . . . . . . . . . . . . 38
3.4.1 Fairness Results . . . . . . . . . . . . . . . . . . . . . . . . 39
3.5 Meta Distribution of SIR for a Cache Enabled D2D Cellular Network 43
3.5.1 Moments for a typical D2D Receiver Requesting arbitrary kth
file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.6 Meta Distribution For The Whole Network . . . . . . . . . . . . . 49
3.7 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4. Conclusion and Future Work . . . . . . . . . . . . . . . . . . . . . . . . . 55
Bibliography . . . . . . . . . . . . .

Abstract:
both academia and industry over the past few years. Exploiting the potential of direct
device-to-device (D2D) communication has been of particular interest to relieve
the burden on the cellular network and maximize the content delivery. In addition,
deploying cache storage at the mobile devices plays a crucial role in enhancing the
spectrum efficiency of the network. Nevertheless, massive and uncoordinated deployments
of mobile devices induce significant interference that might substantially hinder
the envisioned results. One aspect to overcome this sever interference is through retransmission
upon decoding failures. In this thesis, we investigate the impact of
temporal interference correlation in D2D cache-enabled cellular network. We focus
on the effect of transmission activity on the performance of the network. To this
end, tools from stochastic geometry theory is used to capture topological randomness
together with the numerous stochastic constituents in such large scale network. We
have characterized the temporally correlated interference introduced by the retransmissions
and static nature of the cache-enabled devices under generalized Nakagami-m
fading channels. In addition, the effect of the different network parameters are investigated.
To take further more steps in order to improve network performance, we
exploit the cached content information in scheduling D2D links instead of choosing
the number of the D2D links blindly. We also characterize the average probability
iv
of successful content delivery under content dependent access probabilities. With
this proposed scheduling scheme, the network performance outperforms in terms of
the whole network performance. This achieved gain comes at the cost of performance
degradation for the users with less files’ popularity. Hence, we consider enhancing the
QoS for all the D2D users without sacrificing the gain attained by exploiting content
information.Towards this objective, we formulate a constrained optimization problem
for maximizing the overall network performance while guaranteeing the minimum
average reliability at each user individually. Finally, for more understanding the network
, we derive the distribution of signal to interference ratio under full interference
correlation.


Text in English, abstracts in English .


Wireless Technologies


Dissertation, Academic

005