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The growing demand for mobile content has increased the burden on cellular network providers. To this end, mobile content offloading approaches aim to offer a relief of overloaded cellular network infrastructures via local content exchanges between mobile devices. A core assumption of proposed approaches is the voluntary, honest, and altruistic participation of devices or their owners. This dependency...
Wireless sensor networks offer a pragmatic solution for monitoring in a variety of scenarios. For efficient and practical data gathering, especially in large-scale systems deployed in inaccessible areas, unmanned vehicles are becoming a compelling solution. The added infrastructure flexibility comes at the cost of limited contact time between the mobile entity and the stationary devices. The channel...
The Wireless On-Demand Networks and Services Conference (WONS) is happily toasting its 12th edition, and it does so in beautiful Cortina d'Ampezzo, \Queen of the Dolomites" (a UNESCO World Heritage Site) and venue of the 1956 winter Olympics. This year's edition of WONS is held on January 20{22, 2016, and it is co-located with the Seventh Nordic Workshop on System and Network Optimization for...
Secondary spectrum auctions have been suggested as a strategically robust mechanism for distributing idle spectrum to competing secondary users. However, previous work on such auction design have assumed a static auction setting, thus failing to fully exploit the inherently time-varying nature of spectrum demand and utilization. In this paper, we address this issue from the perspective of the primary...
Mobile devices have been augmented by Multi-path TCP (MPTCP), enabling them to exploit the path diversity. Signal aware MPTCP (SA-MPTCP) takes the signal quality, playing a significant role in energy waste, into account to enhance MPTCP energy consumption. The problem is formulated as a decision making problem under uncertainty, endeavoring to optimize energy efficiency by selecting the best policy...
A framework is proposed for future energy aware dynamic spectrum access broadband networks where the demand for the radio spectrum is time varying. The network comprises of several Wireless Service Providers (WSPs) whose aim is to maximize profit by providing broadband services to users in a specific location, a central regional entity named Transmission Central Authority (TCA) and the end users seeking...
Bluetooth (BT) devices are usually grouped in a star topology in small clusters called personal area networks (PANs). The population of BT PANs is limited to 8 devices, but setups in entertainment theme parks or interactive installations might want to employ a larger number of mobile devices. In those scenarios, only off-theshelf devices, without any hardware modifications, can be accepted, so a PAN...
This paper describes the evaluation of a multihop wireless networking solution for Smart Grid metering in an industrial environment. The solution relies on RPL, 6LoWPAN, and IEEE 802.15.4g protocols, and has been implemented using low-power and low-capacity devices. Also, it supports both TCP and UDP protocols to transport traffic from DLMS/COSEM Smart Grid metering applications. The experimental...
Floating Car Data (FCD) applications are based on the collection of geo-localized information updates that are issued by vehicles roaming in a given area. These data are an essential source for traffic information and are widely employed by Intelligent Transportation Systems (ITS). We present and examine a hybrid networking architecture and protocol that are used for the efficient execution of such...
In the framework of the Vehicular Ad-Hoc Networks we propose HBEB (Hybrid Based Election Backbone), a distributed algorithm designed to form multiple backbones of vehicles in charge of propagating data in the VANETs in a fast and efficient way. Differently from other clustering approaches we leverage the ETSI Geonetworking recent standard to form and disseminate data in the backbones. We show that...
The evolution of mobile telecommunication networks is accompanied by new demands for the performance, portability, elasticity, and energy efficiency of network functions. Network Function Virtualization (NFV), Software Defined Networking (SDN), and cloud service technologies are claimed to be able to provide most of the capabilities. However, great leap forward will only be achieved if resource, traffic,...
Geo-location-based bandwidth prediction together with careful download scheduling for mobile clients can be used to minimize download times, reduce energy usage, and improve streaming performance. Although crowd-sourced measurements provide an important prediction tool, little is known about the prediction accuracy and improvements such datasets can provide. In this paper we use a large-scale crowd-sourced...
This paper studies the coverage aspects of a low altitude platform (LAP) system that can form a temporary communication network. The system consists of multiple autonomous drones equipped with dual-band Wi-Fi access points (APs) with ad hoc capabilities to form a mesh network. The suitability of the LAP system is evaluated from the coverage point of view with calculations and simulations. The results...
Full-duplex radio allows signals to be transmitted and received simultaneously by utilizing Self-Interference Cancellation (SIC). At a maximum, it can double the throughput of traditional half-duplex systems. To enhance throughput as much as possible, it is important to utilize downlink and uplink transmissions simultaneously. This paper proposes Hidden Chain MAC protocol, which improves throughput...
In Wireless Sensor Networks, TDMA schedulings are designed at the data link layer in the layered protocol stack to improve some metrics as the latency. Decisions of routing at the network layer are dissociated of the MAC communication planning, which cannot globally optimize latency. Cross-layer designs overcome this problem by ensuring communications between protocols of different layers. A TDMA...
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