WCDMA UTRAN Interface and Signaling Procedure www.huawei.com Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Objectives  Upon completion of this course, you will be able to:  Understand UTRAN interface and structure  Understand the definitions about UTRAN network elements  Understand UTRAN signaling procedure Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page2 Contents UTRAN Network Overview Basic Concepts about UTRAN UTRAN Signaling Procedure Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page3 Contents UTRAN Network Overview Basic Concepts about UTRAN UTRAN Signaling Procedure Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page4 The Position of UTRAN in WCDMA Network Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page5 UMTS Construction CN Iu UTRAN Uu UE UTRAN CN UE UMTS Terrestrial Radio Access Network Core Network User Equipment Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page6 UMTS Structure Core Network Iu Iu RNS RNS Iur RNC RNC Iub Iub Iub Iub Node B Node B Node B Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page7 Node B Uu Interface GC Nt DC Duplication avoidance GC Nt DC UuS boundary C-plane signalling U-plane information control L3 control control control control RRC Radio Bearers PDCP PDCP L2/PDCP BMC RLC RLC RLC RLC RLC RLC RLC L2/BMC L2/RLC RLC Logical Channels MAC L2/MAC Transport Channels PHY L1 General Protocol Mode for UTRAN Terrestrial Interface  The structure is based on the principle that the layers and planes are logically independent of each other Radio Network Layer Control Plane User Plane Application Protocol Data Stream(s) Transport Network Layer Transport Network User Plane Transport Network Control Plane Transport Network User Plane ALCAP(s) Signalling Bearer(s) Signalling Bearer(s) Physical Layer Data Bearer(s) RNL Control Plane Application Protocol CN RANAP UE RRC RNC RNSAP RNC NBAP Node B NBAP ： Node B Application Part RANAP ： Radio Access Network Application Part RNSAP ： Radio Network Subsystem Application Part RRC ： Radio Resource Control Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page13 ... course, you will be able to:  Understand UTRAN interface and structure  Understand the definitions about UTRAN network elements  Understand UTRAN signaling procedure Copyright © 2008 Huawei Technologies... reserved Page2 Contents UTRAN Network Overview Basic Concepts about UTRAN UTRAN Signaling Procedure Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page3 Contents UTRAN Network Overview... Network Overview Basic Concepts about UTRAN UTRAN Signaling Procedure Copyright © 2008 Huawei Technologies Co., Ltd All rights reserved Page4 The Position of UTRAN in WCDMA Network Copyright © 2008