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The emergence and evolution of any package technology is driven by market trends as experienced by the end application. With the maturation of the mobile market, the trends for Smartphone and other mobile devices are more than ever for lower cost. Meanwhile, a higher degree of functionality and performance, thinner profile, and longer battery life are some of the additional market drivers seen in...
This paper looks into an Intermittently Connected Roadside Communication Network (ICRCN) scenario comprising two isolated source Stationary Roadside Units (SRUs) relying on mobile smart vehicles to relay data to a destination SRU. In this case, it was shown in [1] that the downstream source SRU may suffer from a significant starvation problem. As such, a Markov decision process framework was established...
The Internet of Energy (IoE) for Electric Mobility is an European research project that aims at deploying a communication infrastructure to facilitate and support the operations of Electric Vehicles (EVs). In this paper, we present three research contributions of IoE. First, we describe a software architecture to support the deployment of mobile and smart services over an Electric Mobility (EM) scenario...
Thermal management, which dynamically throttles frequency and voltage, is de facto standard in high performance mobile SoC to sustain device surface temperature under specific level; and throttling must accompany with computation slowdown. To minimize performance loss, we present a new thermal management by using adaptive body bias which efficiently modulates speed and leakage current. The key problem...
Vehicular Delay-Tolerant Network (VDTN) is a new disruptive network architecture where vehicles act as the communication infrastructure, furnishing low-cost asynchronous opportunistic communications, variable delays and bandwidth limitations defining a non-TCP/IP (Transmission Control Protocol/Internet Protocol) network. A VDTN assumes asynchronous, bundle-oriented communication, and a store-carry-and-forward...
In this paper, we describe how a context-driven disruption tolerant network may be utilized for vehicular applications. The key concept involves utilizing contextual information pertaining to space and time settings of applications to drive networking functions. As a result, the performance characteristics may be better attuned to the time-scale of relevant vehicular applications. We discuss the protocol...
Improving safety on the road is one of the most challenging goals of recent investigations in VANETs (Vehicular Ad-hoc Networks). CCA (Chain Collision Avoidance) applications are a new emerging means of reducing the number of accidents on the road by providing cars with collaborative communication capabilities, thus allowing them to react against the real risk of accident which may occur in different...
In-vehicle communication networks are a complex and safety-critical system, in which system reliability is essential. Network tests and verification by means of behavioral simulations have been widely adopted by the O&Ms. Among a series of advantages, behavioral simulations allow the statistical analysis performance evaluation, which is important to assess the system reliability. Our objective...
An international standardization of data communication is necessary at both the train and vehicle levels. Trains with varying composition during daily service-such as metros, or suburban and international trains-need a standard form of data communication for train control, diagnostics, and passenger information. Such communication should configure itself when vehicles are coupled on the track. At...
There are two main types of applications for vehicular ad-hoc networks (VANET): safety applications and user applications (such as entertainment and mobile commerce). For user applications, Internet connectivity is a necessity. However, it is challenging to provide fast handoff for vehicles in a VANET due to the rapid movement of vehicles. Previous studies have showed that the time required by the...
This paper evaluates single and multiple antenna systems in realistic car-to-car communication channels. With a three-dimensional ray-tracing simulation tool the narrow-band channel characteristics are determined for various antenna positions and numbers of antennas. The results clearly show the advantage of multiple antenna systems. Suitable antenna positions are determined that allow for optimizing...
In an effort to develop a simulation framework for evaluating the performance of wireless access technologies for vehicular networks, the authors have studied the internal structure of the simulator, NS-2, as well as the draft wireless technology IEEE 802.11p. This intended framework aims at replicating, as far as possible, the access technology characteristics in the simulator and with the help of...
This article presents a mobile WiMAX network deployment as a candidate for broadband and low latency V2I communication architecture. Firstly, it looks over the current state of development of the standards involved, outlining the newest trends (i.e. 802.16m support for 500 km/h). Secondly, the opportunities and the main characteristics that this technology offers are highlighted. Thirdly, by stressing...
This paper presents an architecture to support fast prototyping of augmented reality systems, based on virtual reality. The architecture defines simulation services separated from other aspects of the system. These services support incremental evolution of simulated prototypes into nonsimulated systems. Focus is also placed on user interaction,through the definition of an interaction architecture...
Wireless mesh network (WMN) has become a popular access network architecture. But because of its multi-hop nature, co-channel interference and contention, the attainable capacity of a wireless node in a WMN is significantly less than the radio capacity. We propose a overlay architecture for a WMN, where a wireless-ring (WRing) is deployed over the regular mesh for carrying wireless mesh traffic only...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
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