This paper proposes a virtual resource (VR) allocation scheme for OFDMA based wireless virtualization networks (WVNs). The scheme considers the time-variant wireless channel quality from the technical perspective, as well as the network benefits for WVN elements, e.g., subscriber user equipments (SUEs), mobile network operators (MNOs) and wireless service providers (WSPs), from the economic perspective. Regarding the available VR for a…
Category: COMPUTER NETWORK PROJECT OMNET++
Predictive Data Delivery to Mobile Users through Mobility Learning in Wireless Sensor Networks
We consider applications, such as indoor navigation, evacuation, or targeted advertising, where mobile users equipped with a smart-phone class device require access to sensor network data measured in their proximity. Specifically, we focus on efficient communication protocols between static sensors and users with changing location. Our main contribution is to predict a set of possible future paths…
Ant Colony Optimization-Based Adaptive Network-on-Chip Routing Framework Using Network Information Region
The network-on-chip (NoC) system can provide more scalable and flexible on-chip interconnection compared with system bus. The performance of on-chip adaptive routing algorithms greatly relies on the adopted network information. To the best our knowledge, previous routing algorithms utilize either spatial or temporal network information to improve performance. However, few works have established a framework on analyzing the network information nor showed…
Connection Discovery Using Big Data of User-Shared Images in Social Media
Billions of user-shared images are generated by individuals in many social networks today, and this particular form of user data is widely accessible to others due to the nature of online social sharing. When user social graphs are only accessible to exclusive parties, these user-shared images are proved to be an easier and effective alternative to discover…
Hand gesture recognition for automatic tap system
This paper presents a technique for real time human hand gesture recognition system for automatic tap operation. Hand gesture recognition based machines have been widely developed in recent years. Most of the techniques use skin color models due to its robustness and simplicity. In this work there are two major steps for achieving this goal:…
Web server for command, control and monitoring of industrial equipment
The paper presents the design and experimentation of a Web server for command, control and monitoring of industrial equipment. The server has the following main components: Atmega2560 microcontroller as a CU and the W5100 network controller. The user is connected to the Web server through the Internet. The equipment is connected to the server ports, analog or…
Offshore low frequency AC transmission with back-to-back modular multilevel converter (MMC)
This paper evaluates the use of a back-to-back modular multilevel converter (B2B-MMC) in offshore low frequency (LF) AC transmission. The scheme is compared to two alternative transmission technologies: DC and 50Hz AC. The MMC topology is further compared to a cycloconverter. A high level design of a ±120kVdc, 250MW B2B-MMC system is described, with the…
Performance evaluation and improvement of TCP/IPv6 over IEEE 802.15.4 under Wi-Fi interference
Recent studies have shown that it is possible to implement the Internet Protocol (IP), especially IPv6, in low-power IEEE 802.15.4 based wireless sensor networks (WSN). Blip is an open source experimental implementation of IPv6 over Low-power Wireless Personal Area Networks (6LoWPAN) based on TinyOS. In this study, the performance of Blip 2.0’s Transmission Control Protocol (TCP) under IEEE 802.11g…
Battery Aware Video Delivery Techniques Using Rate Adaptation and Base Station Reconfiguration
With mobile video increasingly becoming an important driver of mobile device usage, the battery consumption of mobile devices will be dominated by video delivery and playback . In this paper, we develop battery efficient video download techniques that vary video download rate dynamically, including stopping video download at times, depending on mobile device buffer levels…
SAVE: Energy-aware Virtual Data Center embedding and Traffic Engineering using SDN
Cloud computing is a popular computing paradigm which provides the virtual resource as a form of VM to customers in an on demand manner. Existing provisioning solutions were only limited to provision computing resource (e.g., CPU, RAM and etc.), therefore, it was difficult to provide more advanced cloud services. Virtual Data Center (VDC) embedding, which…