Description of the task:
Despite the appearance of LTE mobile networks, co-existence of evolving UMTS and LTE networks is foreseen for the coming years. The rapid evolution of the mobile data traffic moves the focus from coverage planning to capacity planning for mobile networks. There are different approaches to provide the necessary capacity, e.g. adding small cells, and integrated use of heterogeneous radio access networks.
Independent from the specific technology solutions, a fundamental engineering task is the dimensioning of the radio access network, i.e. determining the antenna densities to provide the required traffic capacity. The complex task of dimensioning a heterogeneous mobile network requires, among other, knowledge and tools for 3G mobile networks dimensioning, which is the task of the Graduating Student.
The task described should include the followings:
Overview the literature, and develop an understanding of 3G mobile network’s radio interface, and the interference among cells (with respect to frequency re-use).
Examine the mathematical formulae describing signal propagation, and define the methodology to calculate the relation between data rate demand and the required radio bandwidth in the system.
Plan and implement a 3G mobile network dimensioning software module that is capable to:
• determine the necessary antenna density
• with respect to pre-defined traffic densities
• considering signal attenuation characteristics of urban environments
• and inter-cell interference in a 3G mobile network
Test the implemented software module with case studies used in generally used in publications of the field, and finally prepare a documentation about the implemented software module, and the numerical results of the case study evaluations.