A High Performance and Efficient TCP Variant

With emergence of the latest technology and deployment of wireless mobile networks for data communication services, the need of the people has also been increased. There has been a significant effort to tune TCP for these networks. The performance of TCP is affected due to several factors including the congestion window, maximum packet size; retry limit, recovery mechanism, backup mechanism and mobility. The proposed TCP variants are successful in fixed networks but did not yield good results in a mobile wireless network. In this Work, we propose a new TCP variant named UB by integrating the features of TCP Westwood and Vegas. TCP-UB provides better performance than the other TCP variants from the mobility point of view. We have simulated our algorithm using NS2.28 which shows that TCP-UB achieves superior performance over TCP Vegas and Westwood

A Highly Accurate And Reliable Data Fusion Framework For Guiding The Visually Impaired

The world has approximately 285 million visually impaired (VI) people according to a report by the World Health Organization. Thirty-nine million people are estimated to be blind, whereas 246 million people are estimated to have impaired vision. An important factor that motivated this research is the fact that 90% of VI people live in developing countries. Several systems have been designed to improve the quality of the life of VI people and support the mobility of VI people. Unfortunately, none of these systems provides a complete solution for VI people, and the systems are very expensive. Therefore, this work presents an intelligent framework that includes several types of sensors embedded in a wearable device to support the visually impaired (VI) community. The proposed work is based on an integration of sensor-based and computer vision-based techniques in order to introduce an efficient and economical visual device. The designed algorithm is divided to two components: obstacle detection and collision avoidance. The system has been implemented and tested in real-time scenarios. A video dataset of 30 videos and an average of 700 frames per video was fed to the system for the testing purpose. The achieved 96.53% accuracy rate of the proposed sequence of techniques that are used for real-time detection component is based on a wide detection view that used two camera modules and a detection range of approximately 9 meters. The 98% accuracy rate was obtained for a larger dataset. However, the main contribution in this work is the proposed novel collision avoidance approach that is based on the image depth and fuzzy control rules. Through the use of x-y coordinate system, we were able to map the input frames, whereas each frame was divided into three areas vertically and further 1/3 of the height of that frame horizontally in order to specify the urgency of any existing obstacles within that frame. In addition, we were able to provide precise information to help the VI user in avoiding front obstacles using the fuzzy logic. The strength of this proposed approach is that it aids the VI users in avoiding 100% of all detected objects. Once the device is initialized, the VI user can confidently enter unfamiliar surroundings. Therefore, this implemented device can be described as accurate, reliable, friendly, light, and economically accessible that facilitates the mobility of VI people and does not require any previous knowledge of the surrounding environment. Finally, our proposed approach was compared with most efficient introduced techniques and proved to outperform them

A Highly Accurate and Reliable Data Fusion Framework for Guiding Visually Impaired

Wafa Elmannai and Khaled Elleithy's poster on creating a wearable device to assist the visually impaired in increasing their safety and mobility

Computer Vision-Based Framework for Supporting the Mobility of the Visually Impaired

Faculty Research Day 2018: Doctoral Student Poster 1st PlaceThis poster presents an intelligent framework that includes several types of sensors embedded in a wearable device to support the visually impaired (VI) community. The proposed work is based on an integration of sensor-based techniques and a computer vision-based in order to introduce an efficient and economical visual device. The 98% accuracy rate of the proposed sequence is based on a wide detection view that used two camera modules. In this framework, we use several computer vision algorithms including Oriented FAST and Rotated BRIEF (ORB), k-nearest neighbors (KNN), Random sample consensus (RANSAC), and K-mean. However, the novelty of this work is the obstacle avoidance approach that is based on the image depth and fuzzy control rules. The results of our real time experiments emphasize that the proposed collision avoidance approach is able to aid the VI users in avoiding 100% of detected objects

Cost Analysis of 5th Generation Technology

In the global telecommunication manufacturing, the wireless telecommunication advertises is recognized as the wildest and the most dynamic growing sections over the past years. However, due to the science’s improvement, the modern world started to shrink. Also, the human’s technical requirements are enhancing over the time. Meanwhile, the new generations seem to be a merging of the existing technologies into a particular platform. However, as the internet generations started to be adapted and growth over the world and it can be used wherever the people go; so, Mobile access broadband is reality. 5G systems are the hottest topic to many researchers, although 4G systems are being deployed. Now a day, 5G is not being officially used yet by any company or calibration bodies as WiMAX Forum, ITU-R or 3GPP. Our main focus in this paper is to analyze the cost of both 4G and 5G and how the people can feel the progress with 5G but less price than 4G

KMSAFE APP: Campus Safety Mobile App

Many colleges and universities are deciding to implement safety and security apps on them campuses for students, faculty, and staff. In this work, we are proposing a product that uses a very simple hardware button connected by Bluetooth to Android or IOS app for quick Campus Public Safety and local emergency services access. With the emphasis on simplicity and ease of use, we have developed a low cost and highly secure product. Unlike many other products which need more time to use

Simulation based Study of TCP Variants in Hybrid Network

Transmission control protocol (TCP) was originally designed for fixed networks to provide the reliability of the data delivery. The improvement of TCP performance was also achieved with different types of networks with introduction of new TCP variants. However, there are still many factors that affect performance of TCP. Mobility is one of the major affects on TCP performance in wireless networks and MANET (Mobile Ad Hoc Network). To determine the best TCP variant from mobility point of view, we simulate some TCP variants in real life scenario. This paper addresses the performance of TCP variants such as TCP-Tahoe, TCP-Reno, TCP-New Reno, TCPVegas,TCP-SACK and TCP-Westwood from mobility point of view.The scenarios presented in this paper are supported by Zone routing Protocol (ZRP) with integration of random waypoint mobility model in MANET area. The scenario shows the speed of walking person to a vehicle and suited particularly for mountainous and deserted areas. On the basis of simulation, we analyze Round trip time (RTT) fairness, End-to-End delay, control overhead, number of broken links during the delivery of data. Finally analyzed parameters help to find out the best TCP variant.Comment: 09 pages, 09 pages, In proceedings of international conference on 2011 ASEE Northeast Section Conference, At University of Hartford, Connecticut, US

TCP-UB: A New Congestion Aware Transmission Control Protocol Variant

Transmission control protocol (TCP) is a connection oriented protocol for several types of distributed applications. TCP is reliable particularly for traditional fixed networks. With emergence of faster wireless networks, TCP has been performing poorly in its original format. The performance of TCP is affected due to assorted factors including congestion window, maximum packet size, retry limit, recovery mechanism, backup mechanism and mobility. To overcome deficiency of original TCP, Several modifications have been introduced to improve network quality. The mobility is a major hurdle in degrading the performance of mobile wireless networks. In this paper, we introduce and implement new TCP variant University of Bridgeport (UB) that combines the features of TCP Westwood and Vegas. We examine the performance of TCP-UB, Vegas and Westwood using different realistic scenarios. NS2 simulator demonstrates the stability of TCP-UB as compared with TCP Vegas and Westwood in highly congested networks from the mobility point of view

Leveraging Discrete Fourier Transform to Reduce Power Consumption in Underwater Wireless Sensor Network Communications

Wireless Sensor Networks (WSNs) have become an important means of gathering environmental and physical information from a wide range of areas. WSNs could be used in underground, aboveground and underwater applications. In this work, we propose a new solution for underwater Wireless Sensor Networks to overcome the problem caused by the ionized nature of seawater. This work presents a methodology to improve the lifetime of WSNs. The wireless sensors have three main functions: sensing, processing and transmitting. The first two consume very less power compared to the third. Thus, we need to guarantee the successful transmission of signal with nominal and efficient use of power to improve the lifetime of the sensors. Improving the lifetime of these sensors will improve the experience of the end user, as the information-gathering lifetime of the sensors increases. Our validated results showed reduction in the power consumption, thus improving the lifetime and the signal loss rate

Simulation based Study of TCP Variants in Hybrid Network

© ASEE 2011Transmission control protocol (TCP) was originally designed for fixed networks to provide the reliability of the data delivery. The improvement of TCP performance was also achieved with different types of networks with introduction of new TCP variants. However, there are still many factors that affect performance of TCP. Mobility is one of the major affects on TCP performance in wireless networks and MANET (Mobile Ad Hoc Network). To determine the best TCP variant from mobility point of view, we simulate some TCP variants in real life scenario. This paper addresses the performance of TCP variants such as TCP-Tahoe, TCP-Reno, TCP-New Reno, TCPVegas, TCP-SACK and TCP-Westwood from mobility point of view. The scenarios presented in this paper are supported by Zone routing Protocol (ZRP) with integration of random waypoint mobility model in MANET area. The scenario shows the speed of walking person to a vehicle and suited particularly for mountainous and deserted areas. On the basis of simulation, we analyze Round trip time (RTT) fairness, End-to-End delay, control overhead, number of broken links during the delivery of data. Finally analyzed parameters help to find out the best TCP variant