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LoRaWAN is a relatively recent Low-Power Wide Area Network specification intended to support wireless battery operated devices for low data rate applications such as infrastructure monitoring, transportation, asset tracking, security, and health care. While it is clear that heavily built- up areas such as the Central Business District (CBD) of typical cities offer the greatest density of potential...
Software Defined Network (SDN) brings additional flexibility to the traditional network allowing the implementation of intelligent information processing. SDN introduces a new architecture, where the controller acts as the brain of the network controlling several tasks such as routing, load balancing and providing the required quality of service (QoS). However, having a centralized controller makes...
In recent times, aerial platforms have been investigated to provide wireless coverage to terrestrial radio terminals. The advantages of using aerial platforms to provide wireless coverage are many including larger coverage in remote areas, better line-of-sight conditions and resilience to certain natural disasters. In this context, we investigate the performance of using LTE and Wi-Fi technologies...
Professional Mobile Radio (PMR) is a niche market which has been recently revitalized. Since public safety officers are required to operate in challenging or extreme conditions, radio communication is an essential asset to enable them to communicate with one another and with command centers organizing operations. We focus on an advanced deployment in which connectivity is provided by a temporary aerial-terrestrial...
New generations of public safety communications will be building on the top of LTE technologies, taking advantage of its improved performance in capacity and quality of service. LTE networks present a unique opportunity to provide innovative applications and networking solutions to first responders. Flexible LTE deployments using satellite backhauling are being investigated raising new challenges...
Aerial-Terrestrial communication networks able to provide rapidly-deployable and resilient communications capable of offering broadband connectivity are emerging as a suitable solution for public safety scenarios. During natural disasters or unexpected events, terrestrial infrastructure can be seriously damaged or disrupted due to physical destruction of network components, disruption in subsystem...
Public safety networks are receiving more attention and priority in the several countries as the state authorities deal with unsuspected situations and natural disasters. Heterogeneous wireless networks with wireless devices supporting multitude of radio access technologies are witnessing increasing interest from public safety consumers. Energy efficiency in such networks has become an important design...
The 4G Evolved Packet Core (EPC) is the pillar of the Long Term Evolution (LTE) mobile networks. Inspired by the current trend of designing distributed and more autonomous systems, we can notice that the complexity of the existing EPC seriously limits this possibility. We principally consider a reshaping of cellular networks in order to move towards virtual-distributed architectures allowing dynamic...
Past years have witnessed the surge of mobile broadband Internet traffic due to the broad adoption of a number of major technical advances in new wireless technologies and consumer electronics. In this respect, mobile networks have greatly increased their availability to meet the exponentially growing capacity demand of modern mobile applications and services. The upcoming scenario in the near future...
In this paper, we investigate scenarios where 4G LTE base stations are mounted on balloons raised in the sky for the provision of cellular connectivity and coverage within an area of few kilometers (e.g., scenarios for emergency communications). In this context, the link between the base stations need to be completed using wireless technologies, thus impacting the performance of the X2 logical interface...
The hugely increasing demand for mobile broadband access to Web-based services and APPs will soon challenge even the UMTS Long Term Evolution (LTE) cellular technology and its advanced version LTE-A. For this reason the endeavor toward the Fifth Generation (5G) of cellular technology has started. Currently, there is no formal definition of 5G systems but they will encompass heterogeneity of radio...
In this paper we propose a clustering mechanism for improved energy efficiency in aerial based access systems suitable for disaster recovery scenarios and large scale public events. The aerial base station is a low altitude platform (LAP) station that provides access to several terrestrial nodes on the ground over a prescribed coverage area. The terrestrial nodes are battery operated power constrained...
Recent events have shown that in the aftermath of an unexpected incident, communication infrastructures play an important role in supporting critical services. Airborne communication networks have been recently studied for the provision of wireless communication services and it is a promising candidate for rapidly deployable and resilient emergency networks. However, the choice of communication technologies...
Cloud computing is currently emerging as the de facto standard for Internet service provisioning. This uptake is motivated, among other aspects, by the significant reduction in energy consumption that can be achieved by centralizing, consolidating and optimizing large IT infrastructures. At the same time, however, users expect to access cloud services via wireless access networks using smartphones...
Although several works in the literature promise signigicant energy savings for wireless access infrastructures through energy-saving strategies, the number of implementations in real systems is limited, if not zero. This is mainly due to the lack of hardware and software support, especially for monitoring and controlling the wireless access devices. In this demo, we present an energy-saving framework...
During a large-scale natural disaster or unexpected events, the terrestrial telecommunications become stretched, overloaded or totally destroyed in several cases. In these scenarios, a robust and capable emergency communication system is required to guarantee efficient communication to public safety agencies during the emergency phases. Airborne communication network systems have been recently studied...
Energy efficiency is acknowledged as a pivotal issue for a sustainable development of wireless networking technologies. Traditionally, most works in the area focused on the user equipment, where battery duration represents a key asset. However, as the smartphone and tablet revolution fuels a massive deployment of wireless networks, often in the form of WiFi hotspots, more and more attention is expected...
Aerial telecommunications networks based on Low Altitude Platforms (LAPs) are expected to optimally meet the urgent needs of emergency relief and recovery operations for tackling large scale natural disasters. The energy efficient operation of such networks is important given the fact that the entire network infrastructure including the battery operated ground terminals, exhibit requirements to operate...
Accurate measurement of energy consumption of practical wireless deployments is vital to the research community to develop pragmatic simulators and analytical models for the synthesis of new energy-aware and energy-efficient protocols and algorithms for wireless networks. However, there is considerable dearth in the availability of affordable and scalable energy consumption monitoring tools for the...
The continuous increase in the energy production cost, together with environmental sustainability issues, is leading research communities, governments and industries to focus their efforts on a reduction of the global CO2 footprint. Information and communication technologies, which represent the nervous system of the globalized economy and society, account for a significant percentage of the overall...
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