Enhancement of FMIPv6 by Utilising Concurent Binding Update Process

The world is progressing toward the Mobile Internet Protocol Television (MIPTV) era where people are able to watch television while roaming. The MIPTV technology requires high bandwidth and low latency handover. This paper enhances the binding updates process in the Fast Handover Mobile IPv6 (FMIPv6) to improve its handover process performance in term of secureness and robustness, by implementing concurant binding update process thru the use of the International Mobile Subscriber Identifier (IMSI). Simulation results show that the proposed idea reduces the handover latency to about 63% compared to standard FMIPv6

Агрессивная форма ювенильной макромастии

ПОДРОСТКИМОЛОЧНЫЕ ЖЕЛЕЗЫ ЧЕЛОВЕКА /АНОМАЛБОЛЕЗНИ РЕДКИЕМАКРОМАСТИЯГИПЕРТРОФИЯМОЛОЧНОЙ ЖЕЛЕЗЫ ПЛАСТИКАХИРУРГИЧЕСКИЕ ОПЕРАЦИИ ВОССТАНОВИТЕЛЬНЫЕМОЛОЧНОЙ ЖЕЛЕЗЫ БОЛЕЗНИ /ТЕР /ХИ

On the capacity modelling in 3G mobile wireless communications systems and beyond

Capacity issue was a major motivation behind the introduction of the present 3G mobile communication systems such as the wideband CDMA (WCDMA). However, the rapid increase in the number of connections and demand for high-speed multimedia communication services supported is contradicting with the limited resources allocated by these systems. WCDMA is an interference-limited system, which means that the capacity bounds of these systems as well as coverage boundaries are continuously changing according to traffic conditions. WCDMA is designed to provide variable data rates, which further complicate the capacity analysis. Active user capacity analysis in the Universal Mobile Telecommunications System (UMTS) network of WCDMA is essential for different stages ranging from the initial network planning to the proper resource management of the operating network. The determination of upper bounds on the network's active-user capacity is needed to determine the traffic handling capability of the network and later in determining its performance. Amongst the motivations for WCDMA is the possibility for capacity increase with the use of directional smart antennas to reduce the interference and therefore gain capacity increase. These are typically complex systems. One type that is simple enough yet beneficial in gaining capacity and coverage improvements in the WCDMA environment is called the Switched Beam Smart Antenna (SBSA). This work is about the analysis of the capacity! coverage problem ofWCDMA in a multiservice environment with the use of omnidirectional antennas at the base stations or with SBSAs. The analysis produced a distinctive model for the capacity and coverage in both cases whereby the number of users in each of the services, their coverage radii, activities, rates and other parameters in a multi-service UMTS environment are related together at the boundaries of operation. The model provides a useful tool to analyse traffic and for radio resource management in UMTS especially that it links the problem of capacity sharing using WCDMA to the well-studied ATM statistical multiplexing theories. The model with SBSA was used as a tool to asses the improvement gains against complexity when the antenna at the base station is of the switched beam type.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Teaching and Learning Computer Science at Al Baha University, Saudi Arabia : Insights from a staff development course

In this special session we meet a set of projects in computer science and engineering education at a university in Saudi Arabia. They are the product of a pedagogical development course ran in collaboration with a Swedish university during the academic year 2013/2014. The projects reflect the local situation, with its possibilities and challenges, and suggest steps to take, in the local environment, to enhance education. As such it is a unique document that brings insights from computer science and engineering education into the international literature