Title :
Scrambling code planning and optimization for UMTS system
Author :
Hafez, H. ; El-Taher, Fatma El-Zahraa ; Ramadan, Rabie A. ; Gaber, Abdo
Author_Institution :
Center of Wireless Studies, Cairo Univ., Cairo, Egypt
Abstract :
In this paper, the problem of scrambling code (SC) planning and optimization in 3G networks is addressed. Scrambling Codes are used to identify and distinguish cells from one another in WCDMA networks. These SCs are reported by the mobile users to the network to declare which cells they are able to connect to. Under the limitation of available SCs to be assigned to the cells we propose various allocation schemes that assign the scrambling codes according to the planner needs. In addition, a detection algorithm of SC clashes1 has been developed and the recommended assignment is then proposed to decrease the overall interference. Our results were applied to a live WCDMA cellular network and the achieved performance benefit is presented.
Keywords :
3G mobile communication; cellular radio; code division multiple access; interference suppression; optimisation; telecommunication network planning; 3G network; SC clashe detection algorithm; SC planning; UMTS system; Universal Mobile Telecommunication System; WCDMA cellular network; allocation scheme; interference decreament; scrambling code optimization; scrambling code planning; 3G mobile communication; Algorithm design and analysis; Multiaccess communication; Optimization; Planning; Resource management; Spread spectrum communication; Optimization; Planning; Scrambling Codes; UMTS;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2014 IEEE
Conference_Location :
Istanbul
DOI :
10.1109/WCNC.2014.6952571
