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Survivability is a looming threat for Wireless Sensor Networks (WSNs) especially when they are used for monitoring and tracking applications with limited available resources. Self-powered WSNs can alleviate the problem and extend network lifetime. In this poster, we introduce an Energy Conserving Opportunistic Routing (ECOR) protocol that tries to keep a balance between the energy consumption and...
The last hop of the Internet towards the end-user is mostly supported by wireless technologies and thus interconnects multiple users, that should, ideally, be served simultaneously. The shared media capability of such last hop is, however, underused, asthe principle behind wireless technologies implies that only one user can be served at an instant in time. Aiming at allowing multiuser transmission...
This demo presents a novel multirate multicast scheme for video delivery to wireless users. We demonstrate an adaptive scheme that combines differential backlog scheduling and intelligent packet dropping, both based on local information. An important feature of this scheme is that it does not require centralized calculations. We focus on 802.11 mesh networks and we show that our solution copes efficiently...
Cloud based Content Delivery Networks have emerged over the last years as a viable cost-effective alternative to traditional CDNs. In this work we demonstrate a novel surrogate server placement strategy for fostering content delivery within the evolving wireless Cloud environment by combining Social Network Analysis inspired metrics and virtual network embedding strategies. The proposed paradigm,...
Wireless power transfer technology is considered as one of the promising solutions to address the energy limitation problems for end-devices, but its incurred potential risk of electromagnetic radiation (EMR) exposure is largely overlooked by most existing works. In this paper, we consider the Safe Charging with Adjustable PowEr (SCAPE) problem, namely, how to adjust the power of chargers to maximize...
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...
Wireless video transmission systems have been widely adopted to facilitate the ubiquitous access of the multimedia services on the Internet. However, wireless links are not stable and the channel quality might vary with time. Efficient modulation scheme plays an important role to improve the quality of service (QoS) of video transmission. However, the previous efforts mainly focused on the rectangular...
In this paper, we consider the time-varying characteristics of practical wireless networks, and propose a joint dynamic rate allocation and transmission scheduling optimization scheme for scalable video multi-rate multicast based on opportunistic routing (OR) and network coding. With OR, the decision of optimal routes for scalable video coding (SVC) layered streaming is integrated into the joint optimization...
Future dynamic wireless and online social networks will require more agile and efficient infrastructures to support the anticipated user traffic and service requirements. In response, in this work, we propose a novel spectrum-agile resource allocation approach that combines Markov Random Field (MRF) cross-layer decisions for the allocation of resources at the lower protocol layers with Back-pressure...
This paper proposes a framework for Wireless Resource Virtualization (WRV) in Long Term Evolution (LTE) systems. An shared radio access network connects Multiple Mobile Network Operators (MNOs) and allocates radio resources to their users. We formulate the WRV problem as a Binary Integer Programming (BIP) problem. Subsequently, a low complexity iterative algorithm is presented to solve the BIP problem...
In this paper we apply the Named Data Networking [1], a newly proposed Internet architecture, to networking vehicles on the run. Our initial design, dubbed V-NDN, illustrates NDN's promising potential in providing a unifying architecture that enables networking among all computing devices independent from whether they are connected through wired infrastructure, ad hoc, or intermittent DTN. This paper...
The Named Data Networking (NDN) project is emerging as one of the most promising information-centric future Internet architectures. So far, NDN performance in wireless networks has been largely unexplored, especially for what concerns transport mechanisms, which are crucial to ensure reliable and efficient data delivery while accounting for available resources and network dynamics. In this paper,...
A great deal of research energy has been focused on the challenge of delivering high-quality video content to mobile users. In many over-the-top video services, however, the scheduler responsible for channel resource allocation is not aware of content characteristics or playback schedules at end user devices. Therefore, it cannot allocate physical resources in a way that maximizes video quality. For...
Interference management is an important subject in Device to Device (D2D) communication when underlying a LTE-A cellular band. By default, in LTE-A there is negligible intra-cell interference due to the orthogonality of the subcarriers but this orthogonality will be lost when D2D communication takes place under cellular users (CU). Therefore, the purpose of this paper is to propose a novel scenario...
In order to fully exploit the high speed broadband multimedia services, prolonging the battery life of user equipment (UE) is critical from user's perspective, especially for the smartphone users. A collaborative mobile cloud (CMC), which consists of several UEs offers one potential solution for reducing the energy consumption at the terminal side. In this paper, an OFDMA mobile cloud system with...
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