Efficient channel allocation is important for meeting the quality of service (QoS) requirements of both GSM voice calls and GPRS packets in integrated GSM/GPRS networks. In this paper, we propose a new dynamic channel allocation scheme with guard channel, channel deallocation/re-allocation for voice call and packet queue for GSM/GPRS networks. An analytic model with general GPRS channel require...

In a Universal Mobile Telecommunications System (UMTS), a user equipment (UE) can access IP multimedia services through IP Multimedia Subsystems (IMS). In addition to passing IMS authentication, called IMS AKA, this UE also needs to pass General Packet Radio Service (GPRS) authentication, called 3GPP AKA, since the data of the IMS service is transmitted through a GPRS network. Many steps in the...

GPRS and EDGE are narrowband wireless data services that are deployed by GSM operators to provide higher data rate. This paper provides a set of measurements that are used to evaluate, from user perspective, GPRS and EDGE services in the State of Kuwait. The Measurements are taken in the Alsalam suburb which has no PSTN network. Measurements show that the GPRS performance is worst than the anal...

This paper presents an evaluation of the security architecture employed in the General Packet Radio Services (GPRS). More specifically, the security measures applied to protect the mobile users, the radio access network, the fixed part of the network, and the related data of GPRS are presented and analyzed in details. This analysis reveals the security weaknesses of the applied measures that ma...

ارتقای بازدارندگی دفاعی مستلزم تولید گسترده و متنوع محصولات تجهیزات نظامی است که نیازمند به‌کارگیری ظرفیت‌ها قابلیت‌های وسیع صنعتی است. ازآنجاکه تصدی تملک همه این قابلیت‌ها منطقی اقتصادی نیست، بخشی از فعالیت‌های تولیدی در صنایع دفاعی، برون‌سپاری می­‌شود به ایجاد شبکه بزرگی تأمین‌کنندگان منجر شده گستردگی شبکه، تعاملات همکارانه بهبود عملکرد زنجیره تأمین را یک چالش جدی برای مدیران تبدیل کرده سازما...

The General Packet Radio Service (GPRS) of the Global System for Mobile Communications (GSM) is designed for packet switched data transmission and is a mean of mobile access to packet data networks, e.g. the Internet. Packet switched transmission is inherently better suited for bursty traffic as it is generated by typical Internet applications primarily WWW, FTP and e-mail. A simulator is prese...

General Packet Radio Service (GPRS) is a complex data network which upgrades current second generation GSM networks, offering true high-speed internet (IP) and network connectivity over existing GSM cellular networks. The increasing population of mobile users leads to congestion problems in these systems, and motivates the development of more efficient management schemes. This project deals wit...

The General Packet Radio Service (GPRS) is due to be implemented in current mobile networks, introducing a whole new range of mobile data applications and services. Considerable effort has been devoted to test its capabilities and system performance. In this paper, a modular and high-speed GPRS simulator is presented. In order to validate the simulation method, the GPRS link layer performance i...

The evolution of European mobile communication systems towards the third generation (3G) is based on GSM (Global System for Mobile communications) [1]. A first step in the evolution is the General Packet Radio Service (GPRS) [2], [3], which truly supports packet switched data services. Our goal is to investigate the efficiency of different algorithms used for resource allocation in data transfe...

A fundamental issue in GSM/GPRS networks planning is the choice of an appropriate resource allocation strategy at MAC layer to allow data and voice users to share the common transport media. Our goal is to quantitatively evaluate the convenience, in terms of efficient radio resources utilization, of reserving a few timeslots in each TDMA frame to GPRS traffic rather than adopting a “complete-sh...