Availability and Reliability in MEC-enabled UAVs for URLLC

Abstract Unmanned aerial vehicle (UAV) communication networks are key components of the fifth (5G) and beyond (B5G) wireless communication systems. This work aims to develop a dynamic resource provisioning framework to allocate computational resources in a UAV equipped with Multi-access Edge Computing resources (MEC-enabled UAV) that provides on demand communication capabilities to Ultra-reliable low-latency communication (URLLC) services. We propose a dynamic CTMC-based framework to analyze the overall node availability and reliability, while taking into account virtual host setup (repair) delays and failure events for mobile Virtual Network Functions (VNFs) hosted on MEC-enabled UAVs. Numerical results illustrate how virtual resource parameters can impact critical service communication.

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ARMONIA: A Unified Access and Metro Network Architecture

Applied Sciences ◽

10.3390/app10238318 ◽

2020 ◽

Vol 10 (23) ◽

pp. 8318

Author(s):

Aristotelis Kretsis ◽

Ippokratis Sartzetakis ◽

Polyzois Soumplis ◽

Katerina Mitropoulou ◽

Panagiotis Kokkinos ◽

...

Keyword(s):

Network Architecture ◽

Big Data Analytics ◽

Resource Provisioning ◽

Capital Expenditures ◽

Dynamic Resource Provisioning ◽

Efficient Control ◽

Network Functions ◽

Dynamic Resource ◽

Monitoring Information ◽

Metro Network

We present a self-configured and unified access and metro network architecture, named ARMONIA. The ARMONIA network monitors its status, and dynamically (re-)optimizes its configuration. ARMONIA leverages software defined networking (SDN) and network functions virtualization (NFV) technologies. These technologies enable the access and metro convergence and the joint and efficient control of the optical and the IP equipment used in these different network segments. Network monitoring information is collected and analyzed utilizing machine learning and big data analytics methods. Dynamic algorithms then decide how to adapt and dynamically optimize the unified network. The ARMONIA network enables unprecedented resource efficiency and provides advanced virtualization services, reducing the capital expenditures (CAPEX) and operating expenses (OPEX) and lowering the barriers for the introduction of new services. We demonstrate the benefits of the ARMONIA network in the context of dynamic resource provisioning of network slices. We observe significant spectrum and equipment savings when compared to static overprovisioning.

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Reconfigurable Intelligent Surface in Wireless-Powered Interference-Limited Communication Networks

Symmetry ◽

10.3390/sym13060960 ◽

2021 ◽

Vol 13 (6) ◽

pp. 960

Author(s):

Kehinde Odeyemi ◽

Pius Owolawi ◽

Oladayo Olakanmi

Keyword(s):

Closed Form ◽

Communication Networks ◽

Communication Systems ◽

Access Point ◽

Closed Form Expression ◽

Wireless Communication Systems ◽

Average Delay ◽

Limited Communication ◽

Network Cost ◽

High Power Consumption

The commercialization of future wireless communication systems faces crucial problems in terms of reduced network cost of deployment and high power consumption. As a result, reconfigurable intelligent surfaces (RIS) have been suggested as a promising approach to overcome these existing challenges. In this paper, the performance of RIS in a wireless-powered interference-limited communication network is investigated. In this network, an energy-constrained access point (AP) is powered by a dedicated multiantenna power beacon (PB) and communicates to a destination limited-interference node via the RIS. It is assumed that the RIS experiences generalized-K fading distribution while the PB and interferers links are subjected to Nakagami-m fading distributions. To evaluate the system performance, the analytical closed-form expression of the probability distribution function (PDF) for the concerned system is derived. Through this, the exact closed-form expressions of the systems outage probability, average delay-tolerance throughput and average bit error rate are obtained. The analysis quantifies the effects of the number of reflecting elements in the RIS, number of interferer nodes, fading parameters on the AP and interferer links and number of antennas on the PB. It is deduced from the results that there is a kind of symmetry relationship between the analytical and simulation results. Additionally, the results illustrate that the proposed system with an RIS outperforms the conventional system without an RIS. Finally, the accuracy of the derived analytical expressions is validated through a Monte-Carlo simulation.

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Novel method for fog monitoring using cellular networks infrastructures

Atmospheric Measurement Techniques Discussions ◽

10.5194/amtd-5-5725-2012 ◽

2012 ◽

Vol 5 (4) ◽

pp. 5725-5752 ◽

Cited By ~ 2

Author(s):

N. David ◽

P. Alpert ◽

H. Messer

Keyword(s):

Communication Networks ◽

Communication Systems ◽

Ground Level ◽

Economic Damage ◽

Wireless Communication Systems ◽

Distributed Sensor ◽

Distributed Sensor Network ◽

Traffic Delays ◽

Crucial Information ◽

Novel Method

Abstract. A major detrimental effect of fog is visibility limitation which can result in serious transportation accidents, traffic delays and therefore economic damage. Existing monitoring techniques including satellites, transmissometers and human observers – suffer from low spatial resolution, high cost or lack of precision when measuring near ground level. Here we show a novel technique for fog monitoring using wireless communication systems. Communication networks widely deploy commercial microwave links across the terrain at ground level. Operating at frequencies of tens of GHz they are affected by fog and are, effectively, an existing, spatially world-wide distributed sensor network that can provide crucial information about fog concentration and visibility. Fog monitoring potential is demonstrated for a heavy fog event that took place in Israel. The correlation between transmissomters and human eye observations to the visibility estimates from the nearby microwave links was found to be 0.53 and 0.61, respectively. These values indicate the high potential of the proposed method.

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A Framework Coupling VISSIM and OMNeT++ to Simulate Future Intelligent Transportation Systems

Communications - Scientific letters of the University of Zilina ◽

10.26552/com.c.2021.2.c23-c29 ◽

2021 ◽

Vol 23 (2) ◽

pp. C23-C29

Author(s):

Tibor Petrov ◽

Ilya Finkelberg ◽

Nina Zarkhin ◽

Peter Počta ◽

Ľuboš Buzna ◽

...

Keyword(s):

Communication Networks ◽

Intelligent Transportation Systems ◽

Communication Systems ◽

Transportation Systems ◽

Transport Systems ◽

Wireless Communication Systems ◽

Intelligent Transport ◽

Transmission Reliability ◽

The Relationship

With the spread of connected vehicles (CVs), a growth of novel information services exploiting data transmitted by CVs is expected. Wireless communication systems, in particular in vehicular applications, operate with a varying level of transmission reliability, which may affect the quality of V2X-data-driven intelligent transport systems (ITS). Therefore, the performance of ITS should be evaluated in a variety of conditions and the configuration of parameters should be fine-tuned in a safe testbed, using computer simulations. A simple framework is presented, which couples VISSIM traffic simulation and OMNeT++ communication networks simulation in real time, enabling an assessment of the relationship between a communication reliability and transport service quality. A functionality of the framework is demonstrated by applying it to a scheme controlling signalized intersections while estimating traffic flows from the V2I data.

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