796 research outputs found
Interference Distribution for Directional Beamforming Mobile Networks
Publisher Copyright:
© 2013 IEEE.In this paper, we model the aggregate interference power in directional beamforming mobile networks. The work considers the random waypoint model to describe the mobility of the nodes and adopts directional beamforming for communication. The major contribution of this paper is the statistical characterization of the aggregate interference caused by directional beamforming transmissions of mobile interferers to a given node positioned at a reference point. The analysis assumes Rayleigh and Rician small-scale fading channels, a distance-based path-loss large-scale fading model, and a three gain levels sectored antenna model. The quality of the proposed approximations has been confirmed through various simulations for different mobility scenarios, channel conditions, and beamforming parameters, highlighting the effect of directional communications along with mobility on aggregate interference. To demonstrate the practical application of the work, we use two different estimators for the interference characterization. The results confirm the effectiveness of the estimators even when adopting a small set of samples.publishersversionpublishe
Spatial networks with wireless applications
Many networks have nodes located in physical space, with links more common
between closely spaced pairs of nodes. For example, the nodes could be wireless
devices and links communication channels in a wireless mesh network. We
describe recent work involving such networks, considering effects due to the
geometry (convex,non-convex, and fractal), node distribution,
distance-dependent link probability, mobility, directivity and interference.Comment: Review article- an amended version with a new title from the origina
Theoretical aspects of graph models for MANETs
We survey the main theoretical aspects of models for Mobile Ad Hoc Networks (MANETs). We present theoretical characterizations of mobile network structural properties, different dynamic graph models of MANETs, and finally we give detailed summaries of a few selected articles. In particular, we focus on articles dealing with connectivity of mobile networks, and on articles which show that mobility can be used to propagate information between nodes of the network while at the same time maintaining small transmission distances, and thus saving energy
Discrete event simulation of wireless cellular networks
Postprint (published version
Theoretical aspects of graph models for MANETS
We survey the main theoretical aspects of models for Mobile Ad
Hoc Networks (MANETs). We present theoretical characterizations of mobile
network structural properties, di erent dynamic graph models of MANETs,
and nally we give detailed summaries of a few selected articles. In particular,
we focus on articles dealing with connectivity of mobile networks, and on articles
which show that mobility can be used to propagate information between
nodes of the network while at the same time maintaining small transmission
distances, and thus saving energy.Preprin
Fundamentals of Drone Cellular Network Analysis under Random Waypoint Mobility Model
In this paper, we present the first stochastic geometry-based performance
analysis of a drone cellular network in which drone base stations (DBSs) are
initially distributed based on a Poisson point process (PPP) and move according
to a random waypoint (RWP) mobility model. The serving DBS for a typical user
equipment (UE) on the ground is selected based on the nearest neighbor
association policy. We further assume two service models for the serving DBS:
(i) UE independent model (UIM), and (ii) UE dependent model (UDM). All the
other DBSs are considered as interfering DBSs for the typical UE. We introduce
a simplified RWP (SRWP) mobility model to describe the movement of interfering
DBSs and characterize its key distributional properties that are required for
our analysis. Building on these results, we analyze the interference field as
seen by the typical UE for both the UIM and the UDM using displacement theorem,
which forms the basis for characterizing the average rate at the typical UE as
a function of time. To the best of our knowledge, this is the first work that
analyzes the performance of a mobile drone network in which the drones follow
an RWP mobility model on an infinite plane.Comment: Journal submission based on this work is available at
arXiv:1908.0524
3GPP-inspired Stochastic Geometry-based Mobility Model for a Drone Cellular Network
This paper deals with the stochastic geometry-based characterization of the
time-varying performance of a drone cellular network in which the initial
locations of drone base stations (DBSs) are modeled as a Poisson point process
(PPP) and each DBS is assumed to move on a straight line in a random direction.
This drone placement and trajectory model closely emulates the one used by the
third generation partnership project (3GPP) for drone-related studies. Assuming
the nearest neighbor association policy for a typical user equipment (UE) on
the ground, we consider two models for the mobility of the serving DBS: (i) UE
independent model, and (ii) UE dependent model. Using displacement theorem from
stochastic geometry, we characterize the time-varying interference field as
seen by the typical UE, using which we derive the time-varying coverage
probability and data rate at the typical UE. We also compare our model with
more sophisticated mobility models where the DBSs may move in nonlinear
trajectories and demonstrate that the coverage probability and rate estimated
by our model act as lower bounds to these more general models. To the best of
our knowledge, this is the first work to perform a rigorous analysis of the
3GPP-inspired drone mobility model and establish connection between this model
and the more general non-linear mobility models
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