The purpose of writing this article is to present and study femtocellular technologies for mobile cellular networks. With the introduction fourth 4G-LTE fifth 5G generation systems, term femto cell began be strongly mentioned. Femto cells are very small that provide service users with a home base station connect telecommunications operator's network. femtocell mainly looking ever higher data ra...

The viable deployment of both UMTS Terrestrial radio access network (UTRAN) modes, Frequency Division Duplex (FDD) and Time Division Duplex (TDD) in additional and diverse spectrum arrangement will be investigated. Simulations are performed to study the interference between UTRATDD and the UTRA-FDD having adjacent channel carriers. This expansion spectrum will be predominantly used for expandin...

In this paper, we investigate the applicability of the Pragmatic General Multicast Congestion Control (pgmcc) scheme to the multicast data delivery over Universal Mobile Telecommunications System (UMTS) networks. We show that the pgmcc scheme cannot support the degradation of the radio channels in the UMTS Terrestrial Radio-Access Network (UTRAN). Our major contribution is that the legacy schem...

This report deals with the analysis of the performance of different versions of the wide spread Transport Control Protocol (TCP) over 3G UMTS networks. This analysis is done through simulations executed on the Network Simulator version 2 (NS2) and its Enhanced UMTS Radio Access Network Extension (EURANE). Different tool enhancements were developed in order to make this project possible. This pa...

In this paper, for the first time a heuristic network calculator for both whole-body exposure due to indoor base station antennas or access points (downlink exposure) and localised exposure due to the mobile device (uplink exposure) in indoor wireless networks is presented. As an application, three phone call scenarios are investigated (Universal Mobile Telecommunications System (UMTS) macrocel...

The selection of security schemes against Wormhole Attack (WHA) in next generation heterogeneous networks is based on major factors: authentication, confidentiality, and integrity and data availability. The effect of this active threat on Quality of Service (QoS) of the Integrated Universal Mobile Telecommunications System (UMTS) and Wireless Local Area Network (WLAN) Ad Hoc network can be mini...

In this paper, we introduce a framework for the adaptive control of UMTS networks in order to improve bandwidth utilization of the radio channels. The key contribution of the paper constitutes the introduction of a performance management information base for dynamically adjusting the packet scheduler and admission controller. Thus, the adaptive control framework closes the loop between network ...

Berreu et. al. in their landmark paper first introduced turbo codes (TC), which could achieve energy efficiencies within 0.7 dB of Shannon’s limit. Now TC is one of the main options for error correcting codes (ECC) in third generation mobile standards as in UMTS (Universal Mobile Telecommunications System) and cdma2000. UMTS and cdma2000 standards use two types of ECC; Convolutional coding and ...