THE UMTS DEVELOPMENT PLATFORM ARCHITECTURE AND DEPLOYMENT SCENARIOS The architecture at the domain and functional levels, as well as the deployment scenarios are presented based on the 3GPP (ETSI) specifications noted in [1,2]. The terminology and basic principles are kept for consistency with a simplified approach in some cases, and for a pragmatic representation of the subject in others. | The UMTS Network and Radio Access Technology Air Interface Techniques for Future Mobile Systems Jonathan P. Castro Copyright 2001 John Wiley Sons Ltd Print ISBN 0-471-81375-3 Online ISBN 0-470-84172-9 3 The UMTS Development Platform Architecture and Deployment Scenarios The architecture at the domain and functional levels as well as the deployment scenarios are presented based on the 3GPP ETSI specifications noted in 1 2 . The terminology and basic principles are kept for consistency with a simplified approach in some cases and for a pragmatic representation of the subject in others. The UMTS High Level System Architecture The UMTS Domains Figure illustrates the different UMTS domains. The identified domains imply the evolution of current or existing network infrastructures but do not exclude new ones. The Core Network CN domain can evolve for example from the GSM N-ISDN BISDN and PDN infrastructures. Cu Reference point between LJSIM and ME In Reference point between Access and Serving Network domains Un Reference point between User Equipment and Infrastructure domains UMTS radio interface Yu Reference point between Serving and Transit Network domains Zu Reference point between Serving and I Ionic Network domains Figure UMTS architecture domains and reference points. 42 The UMTS Network and Radio Access Technology The generic architecture incorporates two main domains . the user equipment domain and the infrastructure domain. The first concerns the equipment used by the user to access UMTS services having a radio interface to the infrastructure. The second consists of the physical nodes which perform the various functions required to terminate the radio interface and to support the telecommunication services requirements of the users. The rest of the sub-domains are defined in Table . Figure in Appendix A illustrates the four Application Home Serving and Transport strata. It also shows the integrated UMTS functional flow . .
