Integrated cellular and ad hoc relaying systems (iCAR) is a new wireless system architecture based on the integration of modern technologies. It addresses congestion problem due to unbalanced traffic in provides interoperability for heterogeneous networks. The iCAR can efficiently balance loads between cells by using stations (ARS) relay from one cell another dynamically. This not only increases system's capacity cost effectively, but also reduces transmission power mobile hosts extends...

RF energy harvesting (RFH) is emerging as a potential method for the proactive replenishment of next generation wireless networks. Unlike other techniques that depend on environment, RFH can be predictable or demand, and such it better suited supporting quality-of-service-based applications. However, efficiency scarce due to low RF-to-DC conversion receiver sensitivity. In this article, we identify novel communication enable enhance usefulness RFH. Backed by some experimental observations...

In this paper we consider the problem of constructing a coordinate system in sensor network where location information is not available. To purpose introduce virtual assignment protocol (VCap) which defines based on hop distances. As compared to other approaches, VCap simple and have very little requirements terms communication memory overheads. We compare by simulations performances greedy routing using our with one physical coordinates. Results show that can be used efficiently support...

One of the main goals 5G networks is to support technological and business needs various industries (the so-called verticals), which wish offer their customers a wide range services characterized by diverse performance requirements. In this context, critical challenge lies in mapping an automated manner requirements verticals into decisions concerning network infrastructure, including VNF placement, resource assignment, traffic routing. paper, we seek make such jointly, accounting for mutual...

Thanks to network slicing, 5G networks will support a variety of services in flexible and swift manner. In this context, we seek make high-quality, joint optimal decisions concerning the placement VNFs across physical hosts for realizing services, allocation CPU resources sharing host. To end, present queuing-based system model, accounting all entities involved networks. Then, propose fast efficient solution strategy yielding near-optimal decisions. We evaluate our approach multiple...

Wake-up receivers (WuRxs) can improve the lifetime of a wireless sensor network by reducing energy consumption from undesirable idle listening. The amplitude level incoming RF signal is used WuRx to generate an interrupt and wake up radio sleeping node. Existing passive designs are generally based on RFID tags that incur high cost complexity. Thus, there need for cost-effective low-complexity WuRxs suited both long-range directed wake-ups. In this work, we present design using harvesting...

The performance of RF powered communication networks is bottlenecked by the short downlink energy transfer range and doubly near-far problem faced in uplink information to hybrid access point (HAP). These problems can be resolved cooperation an harvesting node R present between HAP source S. However, there lies a dilemma at on whether its harvested S or act as relay for transferring data two-hop fashion. This paper resolves this providing insights into optimal positions suited either...

Enabling technologies for energy sustainable Internet of Things (IoT) are paramount importance since the proliferation high data rate demands low power network devices. In this paper, we consider a multiple input single output (MISO) multicasting system comprising multiantenna transmitter (TX) simultaneously transferring information and to hungry IoT nodes. Each device is assumed be equipped with splitting (PS) hardware that enables harvesting (EH) imposes an individual quality service (QoS)...

Recent advances in electric metering infrastructure have given rise to the generation of gigantic chunks data. Transmission all these data certainly poses a significant challenge bandwidth and storage constrained Internet Things (IoT), where smart meters act as sensors. In this work, novel multivariate compression scheme is proposed for IoT. The algorithm exploits cross correlation between different variables sensed by reduce dimension Subsequently, sparsity each decorrelated streams...

Simultaneous wireless information and power transfer (SWIPT) can lead to uninterrupted network operation by integrating radio frequency (RF) energy harvesting with data communication. In this paper, we consider a two-hop source-relay-destination investigate the efficient usage of decode-and-forward (DF) relay for SWIPT toward energy-constrained destination. particular, assuming Rician fading environment, jointly optimize allocation (PA), placement (RP), splitting (PS) so as minimize outage...

Wireless transfer of energy through directed radio frequency waves has the potential to realize perennially operating sensor nodes by replenishing contained in limited on-board battery. However, high power from transmitters (ETs) interferes with data communication, limiting coexistence these functions. This paper provides first experimental study quantify rate charging, packet loss due interference, and suitable ranges for charging communication ETs. It also explores how placement relative...

In this paper, we characterize analytically the multiaccess interference in wireless code-division multiple-access sensor networks with uniformly random distributed nodes and study tradeoff between connectivity. To provide a guideline for improving system behavior, three competitive deterministic topologies are evaluated along topology terms of link-level network-level (routing) performance. The impact signature code length receiver design on network performance different is also studied.

Wireless ad hoc networks are generally characterised by random node locations and multi-hop routes. A quantitative knowledge of the relation between hop count Euclidean distance could provide a better understanding important network parameters such as end-to-end delay, power consumption along route, localisation. In this paper, we present an analytic approach to capture statistics on for given source-to-destination in greedy routing approach. We also show that, count, bounds can be computed...

Wireless energy transfer to the onboard storage element using dedicated radio frequency (RF) source has potential provide sustained network operations by recharging sensor nodes on demand. To determine efficiency of RF (RFET), characterization process is needed. Different from classical capacitor-charging operation, incident waves constant power (instead voltage or current) element, which requires a new theoretical framework for analyzing charging behavior. This work develops equation...

This paper presents a novel cross-layer optimization framework to improve the quality of user experience (QoE) and energy efficiency heterogeneous wireless multimedia broadcast receivers. joint is achieved by grouping users based on their device capabilities estimated channel conditions experienced them broadcasting adaptive content these groups. The obtained using scalable video coding (SVC) with optimal source encoding parameters resulted from an innovative cooperative game. Energy saving...

Design of an efficient medium access control protocol is critical for proper functioning a distributed cognitive radio network and better utilization the channels not being used by primary users. In this paper, we design contention based (MAC) secondary users' channel access. The proposed MAC allows collision-free to available data eventually their users, with spectrum sensing part handled exclusive nodes. We further introduce provision reservation free secondaries extended periods increase...

In this paper, a novel characterization of smart meter data based on Gaussian mixture (GM) model is presented. It shown that compared to the existing models, proposed GM provides significantly better fit for data. Furthermore, at each meter, sparsity exploited devise an adaptive reduction algorithm using compressive sampling technique such bandwidth requirement transmission reduced with minimum loss information. When closest competitive scheme, found be noise robust and offers 12.8% 7.4%...

This article presents an adaptive multi-sensing (MS) framework for a network of densely deployed solar energy harvesting wireless nodes. Each node is mounted with heterogeneous sensors to sense multiple cross-correlated slowly-varying parameters/signals. Inherent spatio-temporal correlations the observed parameters are exploited adaptively activate subset few nodes and turn-OFF remaining ones. To do so, multi-objective optimization problem that jointly optimizes sensing quality efficiency...

Recent advances in wireless communication technology and the Internet of Things (IoT) have provided an opportunity for mass deployment low cost sensor nodes to measure air pollution real-time over a large geographical area. This article presents design cost, innovative Air Pollution Monitoring Device (APMD) along with evaluation its advanced features. An on-board Particulate Matter (PM) is designed PM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Batteries of field nodes in a wireless sensor network pose an upper limit on the lifetime. Energy harvesting and aware medium access control protocols have potential to provide uninterrupted operation, as they aim replenish lost energy so that neutral operation can be achieved. To further improve process, there is need for novel schemes maximum harvested minimum possible time. Multi-hop radio frequency (RF) transfer one such solution addresses these needs. With optimal placement relay nodes,...

Limited battery capacity is one of the major hurdles towards perpetual operation wireless sensor networks (WSNs). In this work, a framework for Unmanned Aerial Vehicle (UAV) based charging nodes using radio frequency energy transfer (RFET) presented. First, RFET zone conceptualized where possible such that received power above sensitivity level harvester. Next, two novel strategies Static Charging Time Allocation (SCTA) and Optimal (OCTA) are proposed sensors. The UAV remains static in SCTA,...