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This demonstration will present the world's first macroscale molecular communication link to reliably transmit a continuous data stream. The system modulates alcohol molecules, which are then diffused via ambient and induced air currents to carry information to a receiver. The communication distance is several meters and the propagation channel we will demonstrate consists of both free space and tunnel...
Software defined networking (SDN) [1] works as a centralized control model. However, the Internet is managed by owners of different domains, which makes the centralized control does not work for inter-domain Controlling the flow of data packets in a global network requires each NOS (Network Operating System) to have a relative global network view to determine the next NOS hop. Hence, NOSes are required...
Current data centers often employ SDNs (Software-Defined Networks) that are layered in most cases. However, information overwhelming has been a limitation to SDN deployment. We present a management model for data center networks. In this approach, regional networks on lower layers will be aggregated and viewed as single switches to upper layers. Management information will be divided into three parts,...
As a space-efficient approach to data archive and backup, data deduplication is becoming increasingly popular in storage systems. However, as the data growing rapidly in data centers, single-node storage node is no longer be able to provide the corresponding throughput and capacities as expected. Building deduplication clusters is considered as a promising strategy to leverage such bottle-neck on...
Mixed data transmission strategies have been proposed to address the energy imbalance problem in wireless sensor networks. However, whether the energy of all nodes can be balanced by this approach, especially under the communication range constraints of sensor nodes, is lack of study. In this paper, we present a novel analytical model for the two-hop based mixed data transmission and derive its energy...
This work studies security-oriented cooperation schemes, addressing three possible cooperation scenarios, namely the jammer only, relay only and the relay-jammer pair. The cooperation scheme is adaptively selected according to the security requirement and network's operational conditions. The selection of a relay or/and a jammer as well as their transmit power are jointly optimized with the objective...
This paper presents the general distribution for the distance between a mobile user and any base station (BS). We show that a random variable proportional to the distance squared is Gamma distributed. In the case of the nearest BS, it can be reduced to the well established result of the distance being Rayleigh distributed. We validate our results using a random node simulation and real Vodafone 3G...
With the increasing demand for local traffic load, the technique of Device-to-Device (D2D) communication has received great attention [1]. Using the same spectrum as that in cellular communication, D2D communications can increase the overall network spectral efficiency. Meanwhile, D2D communications can potentially generate interference into the existing cellular network if the radio resources are...
Daily, vehicles in transit in a city and during their trajectories encounter other vehicles. The regularity of these encounters is influenced by several elements, such as: vehicle's speed, destinations, traffic conditions, and the period of the day. It is possible to justify these elements by road conditions and the driver's behavior. People have routines and similar behaviors, which strongly impact...
Wireless radio links are generally half-duplex, i.e., they can either transmit or receive in a single channel but not both simultaneously. To achieve single band simultaneous bidirectional communication, full-duplex radio links are recently utilized in wireless networks. Adoption of OFDMA scheme in the full-duplex radio links has also stimulated new research interest to improve the wireless networks'...
This paper presents a method for shaping the transmit pulse of a molecular signal such that the diffusion channel's response is a sharp pulse. The impulse response of a diffusion channel is typically characterised as having an infinitely long transient response. This can cause severe inter-symbol-interference, and reduce the achievable reliable bit rate. We achieve the desired chemical channel response...
Multi-File dissemination through wireless communication has attracted considerable attentions in recent years, especially when Device-to-Device (D2D) communication is developed to support peer-to-peer file transmission. To decrease the total delay, the authors in [1] proposed a cluster-based D2D network in which files are transmitted from the BS to several cluster-heads, and then shared inside each...
In the immediate aftermath of a natural disaster, network infrastructure is likely to have suffered severe damages that challenge normal communications. In addition to that, traffic substantially increases as a result of people attempting to get in touch with friends, relatives or the rescue teams. To address such requirements of a challenged network, we propose a communication framework based on...
Information centric networks (ICNs) allow content objects to be cached within the network, so as to provide efficient data delivery. Existing works on in-network caches mainly focus on minimizing the redundancy of caches to improve the cache hit ratio, which may not lead to significant bandwidth saving. On the other hand, it could result in too frequent caching operations, i.e., cache placement and...
With the explosive growth of web-based cameras and mobile devices, billions of photographs are uploaded to the internet. We can trivially collect a huge number of photo streams for various goals, such as 3D scene reconstruction and other big data applications. However, this is not an easy task due to the fact the retrieved photos are neither aligned nor calibrated. Furthermore, with the occlusion...
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