Software Defined Networking envisions smart centralized controllers governing the forwarding behavior of dumb low-cost switches. But are "dumb" switches an actual strategic choice, or (at least to some extent) they a consequence lack viable alternatives OpenFlow as programmatic data plane interface? Indeed, level (programmable) control logic in might be beneficial offload logically (de facto complex distributed systems) from decisions just based on local states (versus network-wide...

The residential sector is currently one of the major contributors to global energy balance. However, demand users has been so far largely uncontrollable and inelastic with respect power grid conditions. With massive introduction renewable sources large variations in flows, also required provide some flexibility use as contribute stability efficiency electric system. To address this issue, management mechanisms can be used optimally manage resources customers their profiles. A very promising...

Classical coverage models, adopted for second-generation cellular systems, are not suited planning Universal Mobile Telecommunication System (UMTS) base station (BS) location because they only based on signal predictions and do consider the traffic distribution, quality requirements, power control (PC) mechanism. We propose discrete optimization models algorithms aimed at supporting decisions in process of where to locate new BSs. These signal-to-interference ratio as measure capture...

Triggered by the explosion of mobile traffic, 5G (5th Generation) cellular network requires evolution to increase system rate 1000 times higher than current systems in 10 years. Motivated this common problem, there are several studies integrate mm-wave access into networks as multi-band heterogeneous exploit ultra-wideband aspect band. The authors paper have proposed comprehensive architecture with access, where small cell basestations and a conventional macro basestation connected...

The Smart Meter (SM) is an essential tool for successful balancing the demand-offer energy curve. It allows linking of consumption and production measurements with time information customer’s identity, enabling substitution flat-price billing smarter solutions, such as Time-of-Use or Real-Time Pricing. In addition to sending data operators monitoring purposes, Meters must be able send same customer devices in near-real-time conditions, new services instant awareness home automation. this...

Bluetooth is a new low-cost wireless technology that going to play an important role in communications among small electronic devices and the access wired networking infrastructure. stations communicate directly form piconet. In piconet one station has of master others are slaves. The medium based on TDD (time division duplexing) scheme controlled by master. sends packets slaves even-numbered slots triggering transmission from subsequent slot. Slaves allowed send only response packet. way...

With the Smart Grid revolution and increasing interest in renewable distributed sources, house energy consumption will play a significant role system: whole generation distribution system performance can be improved by optimizing management. Beside bill reduction for single users, another advantage obtained overall jointly managing of set thus reducing their peak absorption. In this paper we propose optimization models which allow to manage every day load both multi-users cases, taking into...

Electricity demand management mechanisms are expected to play a key role in smart grid infrastructures reduce buildings power at peak hours, by means of dynamic pricing strategies. Unfortunately these kinds require the users manually set lot configuration parameters, thereby reducing usability solutions. In this paper we propose system, developed within BEE Project, for predicting usage household appliances order automatically provide inputs electricity mechanism, exactly same way user could...

This paper presents the approach of extending cellular networks with millimeter-wave backhaul and access links. Introducing a logical split between control user plane will permit full coverage while seamlessly achieving very high data rates in vicinity mm-wave small cells.

Recent data confirm that the power consumption of information and communications technologies (ICT) Internet itself can no longer be ignored, considering increasing pervasiveness importance sector on productivity economic growth. Although traffic load communication networks varies greatly over time rarely reaches capacity limits, its energy is almost constant. Based this observation, management strategies are being considered with goal minimizing consumption, so becomes proportional to...

This paper introduces approximate analytical models to evaluate the performance of end-to-end measurement based connection admission control (EMBAC) mechanisms, devised for setup real time flows over Internet. These mechanisms rely on users probing current congestion status their required network path using a succession packets. If rate measured at end receivers is greater than certain threshold, are allowed switch phase data exchange; otherwise they abort call attempts. In conformance with...

The use of enhanced bandwidth estimation procedures within the congestion control scheme TCP was proposed recently as a way improving performance over links affected by random loss. This paper first analyzes problems faced every algorithm implemented at sender side connection. Some algorithms are then reviewed, analyzing and comparing their accuracy performance. As existing poor in estimation, sharing network resources fairly, we propose TIBET (time intervals based technique). is new that...

The high energy required by home appliances (like white goods, audio/video devices and communication equipments) air conditioning systems (heating cooling), makes our homes one of the most critical areas for impact consumption on natural environment. In this paper we present a work in progress within European project AIM design system that can minimize waste environments efficiently managing operation modes. architecture use wireless sensor network to monitor physical parameters light...

Expanding the market of mobile network services and defining solutions that are cost efficient key challenges for next generation networks. Network slicing is commonly considered to be main instrument exploit flexibility new radio interface core functions. It targets splitting resources among with different requirements tailoring system parameters according their needs. Regulation authorities also recognize as a way opening players who can specialize in providing acting "tenants" slices....

In this paper we propose mathematical models to tackle the WLAN planning problem. Our approach aims at maximizing network efficiency by taking into account inter-AP domain interference and access mechanism. Both single-channel multiple-channel problems are considered. We give different formulations which capture levels of detail effect on efficiency. order evaluate quality proposed models, obtain optimal solutions for synthetic instances, heuristics get suboptimal in a reasonable computing...

The energy consumption of wireless access networks amounts for more than 55% the whole communication sector and a non negligible part operational costs mobile operators. In this paper we consider possible savings through optimized management on/off state transmission power stations according to traffic estimates in different hours day or days week. We propose an optimization approach based on ILP model that minimizes while ensuring coverage active users enough capacity guaranteeing quality...

Wireless mesh networks (WMNs) have emerged as a flexible and low-cost network infrastructure, where heterogeneous routers managed by different users collaborate to extend coverage. This paper proposes novel routing metric, Expected Forwarded Counter (EFW), two further variants, cope with the problem of selfish behavior (i.e., packet dropping) in WMN. EFW combines, cross-layer fashion, routing-layer observations forwarding MAC-layer measurements wireless link quality select most reliable...