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

fYear

2014

fDate

6-9 April 2014

Firstpage

1968

Lastpage

1973

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2014 IEEE

Conference_Location

Istanbul

Type

conf

DOI

10.1109/WCNC.2014.6952571

Filename

6952571