Architecture of new generation networks

Architecture of New Generation Networks Arpali, Çağlar Ms, Department of Computer Engineering Supervisor: Asst. Prof. Dr. Halil T. Eyyuboğlu June 2004, 64 pages In this thesis, two macro cell propagation models for network architecture of Universal Mobile Communication System (UMTS), namely, UMTS vehicular ITU-R model [1] and extended Okumura Hata model [2] are compared using digital map and field measured data collected from a particular site in Ankara, Turkey. Comparison is made on the basis of different environment of vegetations, terrains, buildings types and morphology structures. To overcome the inadequacy of the second propagation model, we have proposed different topography and morphology corrections. For this purpose, sample calculations are performed for path lengths of 2700 m while the general results are plotted for a range of 6000 m. We have also investigated radio network planning with related link budgets for comparing the cell ranges of both models according to the difference service type of 12.2 kbps voice and 384 kbps real-time data. Our findings indicate that in the determination of signal path loss, average buildings height {Amr) is more decisive than others in UMTS vehicular ITU-R model, whereas for extended Okumura Hata model, topographic structure of the terrain (Q) and effective antenna height (heff) are most dominant factors and UMTS vehicular ITU-R model predicts shorter cell ranges with respect to extended Okumura model. Key Words: UMTS, Propagation, Signal Path Loss, Radio Network Planning İ