LTE (Long Term Evolution) networks are capable of handling tremendous user loads with the current user base estimated to be in hundreds of millions. LTE is superior to older telecommunication networks, yet it suffers from issues like inflexible & expensive equipment, complex control plane protocols, coupling of control and data planes in devices and equipments and so on. It is therefore decided...

This paper presents results of research on network-based positioning for UMTS (universal mobile telecommunication system). Two new applicable network-based cellular location methods are proposed and assessed by field measurements and simulations. The obtained results indicate that estimation of the position at a sufficient accuracy for most of the location-based services does not have to involv...

Converged telecommunication networks, which simultaneously support a growing variety of services through a common network infrastructure, are aimed at significantly reducing network expenditures. This trend has encouraged the development of a unified network paradigm capable of supporting a wide variety of cost-effective recovery solutions, each of which may cope differently with fiber cuts and...

The concept of using middleware-based architectures for telecommunication services in the broadband, multimedia, and information era is increasingly gaining acceptance. One representative example is the Telecommunications Information Networking Architecture (TINA), which is characterised by a variety of services, a multitude of service providers, a well-defined business model, a middleware plat...

This paper presents an analysis of the impacts of electronic commerce on proactive firms in the connectivity equipment industry. Electronic commerce initiatives identified in the optical connectivity value chain were analyzed for each of the four layers of the chain namely network operators, system integrators, assemblers and sub-assemblers. In this industry, electronic commerce has been and wi...

Third Generation Partnership Project (3GPP) specification TR 25.950 proposed High-Speed Downlink Packet Access for the Universal Mobile Telecommunication System (UMTS). In this mechanism, an active set of cells is defined for every User Equipment (UE) communication session. The cell with the best wireless link quality (called the serving cell) in the active set is selected for communication wit...

A mobile virtual laboratory is developed to help students perform virtual experiments using mobile devices to make it possible for teaching to be conducted anytime anywhere. In addition, resources and equipment can be integrated and shared efficiently where an environment is created to promote learning interests and efficiency by using mobile devices via the Internet and the GPRS telecommunicat...

We demonstrate a new approach of photonically assisted radio-frequency (RF) waveform generation using a spectrally incoherent light source. The system is based on the so-called generalized frequency-to-time mapping operation. In this work, external modulation of the source is done by concatenating two electro-optic Mach-Zehnder modulators properly biased to achieve short pulse gates which allow...

This paper reviews the literature data on the genetic toxicology of radiofrequency (RF) radiation. Whereas in the past most studies were devoted to microwave ovens and radar equipment, it is now mobile telecommunication that attracts most attention. Therefore we focus on mobile telephone frequencies where possible. According to a great majority of the papers, radiofrequency fields, and mobile t...

To accommodate fast growing mobile traffic, many network operators make efforts to increase the number of small cells especially in urban hot spot areas. 3rd Generation Partnership Project (3GPP), a global standard organization for wireless telecommunication, introduced dual connectivity, i.e., inter-eNB (evolved Node B) carrier aggregation for small cell deployment. With dual connectivity, a u...