M. Hosein Fallah

Learn More
Current literature provides many practical tools or theoretical methods to plan and dimension GSM or UMTS radio networks but overlooks the algorithms of network plan and dimensioning for core networks. This paper introduces an algorithm for traffic and throughput dimensioning for UMTS core network. A case study is provided to verify the algorithms created(More)
Currently there are many practical tools or theoretical methods to plan and dimension GSM or UMTS radio networks but overlooks the algorithms for core networks because of its complexity. This paper introduces an algorithm for traffic and throughput dimensioning for Nb, Mc and Nc interfaces in UMTS core network. The analysis is based on the traffic and(More)
Knowledge spillovers have been used to explain the increased rate of innovation that is found in technological clusters. The last two decades have seen an increasing interest by researchers trying to capture and measure the effects of these spillovers. However, very little is known about the mechanisms of knowledge exchange that take place in clusters. In(More)
The past few years have seen mobile operators transition to next-generation mobile networks; specifically from third-generation networks (3G) to long term evolution (LTE). This paper first describes the basic architecture and topology of UMTS R4 core network and introduces two options in network planning: flat structure or layered structure. This paper(More)
Mobile data services are penetrating mobile markets rapidly. The mobile industry relies heavily on data service to replace the traditional voice services with the evolution of the wireless technology and market. A reliable packet service network is critical to the mobile operators to maintain their core competence in data service market. Furthermore, mobile(More)
Mobile packet services are penetrating mobile markets rapidly. The mobile industry relies heavily on data services to replace the traditional voice services with the evolution of the wireless technology and market. Designing a reliable packet service network is critical to the mobile operators' ability to maintain their core competence in data service(More)
BACKGROUND Geographic distribution of West Nile virus (WNV) is heterogeneous in Iran by a high circulation in the southern-western areas. The objective of our study was to determine environmental and climatic factors associated with the risk of WNV equine seropositivity in Iran. METHODS Serological data were obtained from a serosurvey conducted in equine(More)
This doctoral thesis would not have been possible without the support of many people. First of all, I would like to acknowledge my committee members: Philippe Sabatier, who provided me, supported and taught me much valuable lessons throughout my study. The opportunity to work as a student with him was very rewarding and unforgettable. Vahid Otarod, without(More)