In wireless data networks, Radio Resource Management (RRM) strategies are an important issue for supporting Quality of Service (QoS). This paper evaluates the performance of two innovative scheduling disciplines that allow the subscribers to transmit data with guaranteed QoS in a packet switched radio network based on the General Packet Radio Service (GPRS). In particular, the analysed strategi...

The purpose of this study was to identify an aspect of data transmission that could help address the existing gap between the availability of the second and third generations of mobile telephony in the light of increased demand for growth of machine-to-machine applications using mobile data technology. This study examined the reliability of sending data through the SMS interface as an alternati...

We analyze the throughput and delay performance of the radio link control/media access control (RLC/MAC) protocol layers in General Packet Radio Service (GPRS) networks. Several time-slotted uplink radio frequency channels are shared by the mobiles on a request reservation based multiple access scheme. Using the theory of Markov chains, we derive expressions for the uplink throughput and delay ...

In this paper, we describe the enhancements made to an existing General Packet Radio Service (GPRS) network OPNET model. These enhancements to the existing model are the implementations of the Logical Link Control (LLC) layer, the Base Station Subsystem (BSS), and the cell update procedure. We first present an overview of the GPRS network, the LLC layer, and the existing OPNET model. We then de...

This paper considers the acknowledgment procedure used to assure the delivery of packets on the radio interface of General Packet Radio Service (GPRS), where GPRS system is a new GSM service. It is currently being standardized for GSM Phase 2+ and provides packet switched data services over GSM network resources. This paper gives a rapid description of the GPRS radio interface, and its sublayer...

Internet technology has emerged as the major driving force behind new developments in the area of telecommunications networks. The volume of packet data traffic has increased at extreme rates. In order to meet these changing traffic patterns, more and more network operators adapt their strategies and plan to migrate to IP-based backbone networks. Clearly, the Internet will dominate our daily li...

Next generation wireless network is foreseen as the combination of heterogeneous wireless networks capable of providing enhanced services to mobile users. Vertical handoff is a crucial issue in providing service to mobile users, in a heterogeneous network. To maintain continuous service during vertical handoff period, the handoff procedure should consider the noise and interference in the netwo...

We examine the traffic-handling capabilities of General Packet Radio Service (GPRS) with respect to supporting IP-based Internet services. We begin with an overview of GPRS in which we discuss its general characteristics, connection set-up procedures, and data transfer procedures, both for the reverse link and the forward link. We then present an analytical model to assess throughput of the rev...

This paper presents a SIM-based tool for user authentication in various service areas such as financial transactions in e-commerce. Other remote services can use SIM as an authentication tool over existing GSM technology through GPRS, which is an additional packet data feature for the GSM network. GPRS enables packet-switched traffic to exist in predominantly circuit-switched GSM infrastructure...