3 research outputs found
Unmanned Aerial Vehicle for Internet of Everything: Opportunities and Challenges
The recent advances in information and communication technology (ICT) have
further extended Internet of Things (IoT) from the sole "things" aspect to the
omnipotent role of "intelligent connection of things". Meanwhile, the concept
of internet of everything (IoE) is presented as such an omnipotent extension of
IoT. However, the IoE realization meets critical challenges including the
restricted network coverage and the limited resource of existing network
technologies. Recently, Unmanned Aerial Vehicles (UAVs) have attracted
significant attentions attributed to their high mobility, low cost, and
flexible deployment. Thus, UAVs may potentially overcome the challenges of IoE.
This article presents a comprehensive survey on opportunities and challenges of
UAV-enabled IoE. We first present three critical expectations of IoE: 1)
scalability requiring a scalable network architecture with ubiquitous coverage,
2) intelligence requiring a global computing plane enabling intelligent things,
3) diversity requiring provisions of diverse applications. Thereafter, we
review the enabling technologies to achieve these expectations and discuss four
intrinsic constraints of IoE (i.e., coverage constraint, battery constraint,
computing constraint, and security issues). We then present an overview of
UAVs. We next discuss the opportunities brought by UAV to IoE. Additionally, we
introduce a UAV-enabled IoE (Ue-IoE) solution by exploiting UAVs's mobility, in
which we show that Ue-IoE can greatly enhance the scalability, intelligence and
diversity of IoE. Finally, we outline the future directions in Ue-IoE.Comment: 21 pages, 9 figure
Using Coalition Games for QoS Aware Scheduling in mmWave WPANs
With the increasing quality of service (QoS) demands
for indoor multimedia applications, millimeter wave
(mmWave) communications are emerging as a promising candidate
for the wireless personal area networks (WPANs). On
the one hand, it has the advantage of providing several-Gbps
transmission rate. However, due to the unique characteristics
in 60-GHz frequency band, such as high propagation loss,
beamforming is fully exploited for mmWave links to achieve
directional transmission and reception. In this paper, we propose
a novel QoS aware scheduling algorithm for concurrent transmission
in mmWave WPANs based on coalition game. First, we
formulate the problem of concurrent transmission scheduling into
a non-convex integer programming problem. Then, we propose a
coalition game based algorithm to maximize the number of flows
satisfying the corresponding QoS requirements, while improving
the network resource utilization effectively. Besides, our proposed
algorithm converges to a Nash-stable equilibrium with greatly
reduced complexity. Through extensive simulations under various
system parameters, we demonstrate our scheme achieves better
network performance in terms of the throughput and the number
of flows scheduled successfully, compared with existed protocols.info:eu-repo/semantics/publishedVersio