CDMA 2000 1X PS Domain Research And Engineering In China Unicom Jiangxi Branch

CDMA 1X technology plays an important role in evolving mobile telecommunication system to 3G. 3G mobile telecommunication system mainly consists of Circuit Switch Domain (CS), Packet Switch Domain (PS) and IP Multimedia System (IMS). In 3G system, Packet Switch Domain is the basic platform in implementing various data applications which differentiate 3G from current mobile system, therefore researching and understanding it becomes very important. As a major operator in Jiangxi' s mobile telecommunication market, it is necessary for Jiangxi Unicom to provide advanced and competitive high speed mobile data services by building a packet switch system based on CDMA network.After taking careful consideration on China Unicom HQ' s requirements, the circumstance of Jiangxi Unicom' s existing CDMA network and ATM bear network, an IP address optimization is performed for R-P, PI interface, PDSN and PCF. To ensure network security, a full solution which comprises advanced technologies such firewall, IP address isolation and transform is put in place. The CDMA 1X PS network can provide following services to end users: Internet service, applications based on WAP/Brew/JAVA, Multimedia service etc. This paper gives an example on wireless POS service for finance industry.This paper focuses the theoretical analysis and engineering implementation of CDMA 1X PS domain, mainly from following aspects such as CDMA 1X System Overview, CDMA 1X PS Domain' s principle, implementation solution of Jiangxi Unicom' s CDMA 1X network and the evolution to 3G etc. The author himself has been participated the whole project progress from beginning to end, including engineering implementation . testing and system operation job.This paper studies the Packet Switch technology and gives detailed analysis on application implementation such as UniJava Unibrew 1X wireless access services over Simple IP at Jiangxi Unicom' s CDMA mobile network.