The hard handover algorithms used in earlier GSM networks are fairly simple but they cannot be used to support multimedia services due to high blocking probabilities. This paper presents prior determination of soft handover probability considering new direction of motion of Mobile Station (MS) coinciding with gravitation point of cells. The authors’ simulation results for ...

The Vehicular Safety Consortium (VSC), the Crash-Avoidance Metrics Partnership (CAMP) consortium and the Vehicle Infrastructure Initiative (VII) along with the giants of the light-duty vehicle manufactures, are working to develop pre-competitive safety technologies and various applications that can be offered in Vehicular Ad-hoc NETworks (VANETs), a special kind mobile ad-hoc networks where wireless equipped element ...

In this paper, the authors present a development process of software with Graphic User Interface (GUI) for monitoring temperature in a Zigbee wireless network. The software framework design was introduced and analyzed in detail. In this paper, they wrote the software with C++ codes in Microsoft Foundation Class (MFC) programming of Visual C++ 6.0, which ...

In order to reach the objective of intelligence and energy saving for university classroom lighting, energy saving lighting control system in university classroom based on wireless sensor network is designed, including design of sensor node and sink, as well as corresponding development of control program and upper-computer software. The system sets single-chip Ameg16 as control ...

Reducing the energy consumption of available resources is still a problem to be solved in Wireless Sensor Networks (WSNs). Many types of existing routing protocols are developed to save power consumption. In these protocols, cluster-based routing protocols are found to be more energy efficient. A cluster head is selected to aggregate the data received from ...

An increase in the demand of broadband service has encouraged research and study to find a solution to offer an adequate amount of service. Living in this digital world with downloading video, voice or data leads occasionally to have a shortage of bandwidth in the provided data. One of the solutions to cover the huge ...

Currently, most network users need to use user name and password to log on for authentication. Passwords used in systems, such as email system, online banking, are most static. But static passwords show more and more security risks with the development of hacking. In view of the security risks of using static passwords to authenticate ...

In this paper, the authors focuses on testing and quality measurement and analysis of VoIPv6 performance. A client, server codes were developed using FreeBSD. This is a step before analyzing the architectures of VoIPv6 in the current internet in order for it to cope with IPv6 traffic transmission requirements in general and specifically voice traffic, ...