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The information and communications technologies world is migrating towards the Future Internet (FI) era. Operators will have increased complexity to address in the FI era, compared to today, in the management of their infrastructure and services. This is due to the extended set of applications that should be supported and to the more options offered by the infrastructure. Cognitive management systems...
The seamless integration of heterogeneous wireless access networks is currently one of the issues of major interest in the field of telecommunication systems. In an early future technologies like UMTS, WLAN and WiMAX will give broadband access to users that perform their voice/video calls or data sessions without knowledge of the specific technology their terminals are using, following the paradigm...
3GPP has specified that terminals can be configured to use either 2 or 10 ms transmission time interval in high speed uplink packet access systems. The purpose of this paper is to evaluate the benefit of exploiting a mixture of both of the transmissions time intervals within a cell instead of only one. The study is quantified by means of studying the achievable coverage of voice over IP and possible...
Recently, the demanding requirements and use for wireless communication are increased and continue to grow. WiBro is trying to compete with Wi-Fi in coverage and data rate, while the inexpensive Wi-Fi still very popular in both personal and business use. This paper designs and implements Fixed Mobile Convergence (FMC) terminal system supported IEEE802.11 b/g/n Wi-Fi and WiBro. Terminal system of this...
Defined by the 3GPP, the IP multimedia subsystem (IMS) is an architectural framework that enables the delivery of multimedia services in mobile networks. Based on the session initiation protocol, the IMS offers unified billing, QoS negotiation mechanisms, and the possibility of combining services deployed in different environments like CAMEL and Parlay OSA. With the aim of determining the real limitations...
Service creation by composing existing services and/or network resources is considered by Telecom and Internet industries as the trend for service provisioning in next generation networks. Related research work is being carried out for years, and various service composition approaches have been proposed by different standardization organizations and companies catering to different network requirements...
In this paper, we present the design and the implementation of a test-bed for the Policy and Charging Control (PCC) system proposed in 3GPP TS23.203. Specifically, we use an IP multimedia call service example to demonstrate how to implement an advanced mobile service with policy and charging control in our test-bed. We show that the PCC system can handle the application-level session information and...
Long Term Evolution (LTE) has being standardized by the 3rd generation partnership project (3GPP) as the evolution of WCDMA. Different from the conventional mobile communication technologies that deliver voice traffic through circuit switched networks, in LTE, all kinds of traffic are transferred through packet switched networks based on Internet Protocol (IP). In order to provide Quality of Service...
Quality of Service impairments in wireless and wired access networks for IP-based next generation networks (NGNs) differ fundamentally from the ones which we typically encounter in core networks. Examples include but are not limited to high delay, low bandwidth, and high jitter. Even though most NGN architectures claim to be access-agnostic, applications deployed on NGNs have requirements which may...
The recent growth of peer-to-peer traffic and the popularity of streaming video is a cause for possible instability of the networks because most of these services run over UDP, without any mechanism for congestion control. Moreover, the adaptive features of peer-to-peer traffic may lead a misuse of the classical QoS rules legitimately applied to end-user applications. This paper proposes the usage...
The multimedia broadcast/multicast service (MBMS) originally proposed by UMTS supports the delivery of multimedia streams to a group of mobile subscribers. With the heterogeneity of device capability and the variety of subscriber preference, an MBMS source has to provide multiple levels of service quality to its group members. To achieve this, it is essential to adopt the layer-encoding (i.e., scalable-coding)...
The goal of this work is to analyze the feasibility of a peer-to-peer file sharing technique in mobile cellular environments, taking into account key characteristics and peculiarities of the UMTS radio access network (UTRAN). The concept is referred here to as mobile-to-mobile (m2m). Our research efforts explore the performance benefits of m2m file sharing applications in UMTS networks in terms of...
In this paper, we address the problem of optimizing the delivery of multimedia services with different QoS requirements to mobile users. The dynamic behaviour of the mobile transmission resources makes it difficult to provide perceptually good quality streaming video. Filtering compressed video stream is one way to deal with this problem by providing adaptivity to mobile clients. It is a kind of media...
The wide-band code division multiple access (WCDMA) based 3G and beyond cellular mobile wireless networks are expected to provide a diverse range of multimedia services to mobile users with guaranteed quality of service (QoS). Soft capacity is one of the main characteristics of these networks and it necessitates new radio resource management strategies to serve diverse quality of service requirements...
This paper gives an overview of the network sharing options available for 3G and beyond network operators. Sharing of network infrastructure among operators offers an alternative solution to reduce the investment in the coverage phase of WCDMA, allows increased coverage, reduces time to market, and allows earlier user acceptance for WCDMA and its related services. Furthermore, in this paper general...
Third generation (3G) systems are those with enhanced capabilities of providing services and applications that reflect the convergence of mobile communications, the Internet, and multimedia applications. Despite the numerous exciting services and opportunities offered to both individual and business users by 3G, service provisioning is governed by very strict bandwidth limitations. The quality of...
Beyond 3G (B3G) networks encompasses, among other features, a wide range of radio access technologies (RATs) providing users with a flexible and efficient access to the increasing pool of demanding services. This allows users to get connected using the access technology that is most suitable according to some specified criteria. Consequently, to take full advantage of B3G networks, mobile terminals...
Future wireless networks will see a combination of 3G WWANs and WLANs, which provide data services at different rates and with different coverages. New handoff management schemes are required in such heterogeneous networks to ensure the continuation of application sessions with low handoff cost. This paper proposes a novel service-oriented vertical handoff scheme between 802.11b (WLAN) and cdma2000...
With the introduction of MBMS (multimedia broadcast/multicast services), new requirements are introduced in order to offer this service to all users. Due to the low UMTS resources there is a need to enhance the UMTS network. In this paper, an optimized point-to-point MBMS mode scheduling scheme using DCH/FACH (dedicated channel/forward access channel) and DSCH (downlink shared channel) channels is...
In this paper, we highlight different architectures and techniques for transport of user traffic in the IP-based UMTS terrestrial radio access network (UTRAN) taking into account the real-time nature of the transport therein. Indeed, the UTRAN imposes severe delay bounds on the transport of both real-time and non real-time traffic. In this context, we provide an overview of different QoS-capable transport...
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