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Advisor(s)
Abstract(s)
This paper presents a tool for multi-service traffic engineering in UMTS FDD mode. For each of the WCDMA
system scenarios, the power restrictions and a given mixture of symmetric applications are considered. The maximum number of supported codes was obtained by previous simulations, taking into account carrier-to-interference constraints, leading to a given available data rate per cell. Given the spread-factor, with the basic resource being considered of 15 kb/s, the various applications request a certain number of basic code channels. A standard algorithm was used to compute each application’s blocking probability, Pb, as a function of the fraction of active users in cells. In the urban1 scenario (20 % data at 40 kb/s plus 80% voice), using one carrier per cell, UMTS can support 26 speech users plus 7 data users for Pb = 2 %. If two carriers were used, it would support 60 speech users and 14 data users. In the urban2 scenario, as data at 320 kb/s is considered, system performance degrades, which can only be overcome by using three carriers per cells, which seems impracticable in an actual system. The consideration of terminal mobility leads to a slight decrease on the number of supported users.
Description
Keywords
Teletraffic Engineering UMTS FDD Mode Mobile Networks
Citation
M.C. Garcia, F.J. Velez and L.M. Correia, “Teletraffic Engineering in UMTS FDD Mode Networks,” in Proc. of EPMCC’ 2001 – 4th European Personal Mobile Communications Conference, Vienna, Austria, Feb. 2001.
Publisher
EPMCC