Title :
DS-41 and UMTS intersystem roaming
Author :
Purnadi, Rene ; Mandyam, Giridhar D.
Author_Institution :
Nokia Res. Center, Irving, TX, USA
Abstract :
Currently, two 3rd-generation CDMA (code division multi access) systems have been standardized. The UMTS (Universal Mobile Telecommunication System) adopts W-CDMA (wideband CDMA) direct spread (DS) air interface and the cdma2000 system adopts the cdma2000 multicarrier (MC) air interface. Currently the UMTS system is connected to a GSM-MAP based network protocol and the cdma2000 system is connected to an ANSI-41 based network protocol. There are ongoing harmonization efforts to cross-connect the W-CDMA DS to the ANSI-41 based network (the “DS-41” air interface) and the cdma2000 MC to the GSM-MAP based network (the “MC-MAP” air interface). The DS-41 air interface uses the physical layer, link layer and the radio resource control of W-CDMA DS but uses the mobility management and call control of the cdma2000 system. On the other hand, the MC-MAP uses the physical layer, link layer and the radio resource control of cdma2000 MC but uses the mobility management and the call control of the W-CDMA DS. This paper discusses the necessary DS-41 modifications, particularly with respect to the authentication procedure. This paper also considers the authentication procedures during roaming between the DS-41 and the UMTS systems. Call flows are presented to support the studies
Keywords :
ANSI standards; access protocols; broadband networks; cellular radio; code division multiple access; message authentication; multiuser channels; network interfaces; radio access networks; spread spectrum communication; telecommunication security; telecommunication standards; 3rd-generation CDMA systems; ANSI-41 based network protocol; DS-41 air interface; DS-41 modifications; GSM-MAP based network protocol; MC-MAP air interface; UMTS intersystem roaming; UMTS system; Universal Mobile Telecommunication System; W-CDMA; W-CDMA DS; authentication procedure; call control; call flows; cdma2000 system; code division multi access; direct spread air interface; link layer; mobility management; multicarrier air interface; physical layer; radio access network; radio resource control; wideband CDMA; 3G mobile communication; Authentication; Control systems; Mobile radio mobility management; Multiaccess communication; Multicarrier code division multiple access; Radio access networks; Radio control; Roaming; Wideband;
Conference_Titel :
Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6596-8
DOI :
10.1109/WCNC.2000.904870
