01 Introduction

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UA07 WCDMA IP in UTRAN DescriptionTMO18277 Edition 1

Section 1Introduction

WCDMA 9300UA07 WCDMA IP in UTRAN Description

TMO18277 Edition 1


WCDMA 9300 � UA07 WCDMA IP in UTRAN DescriptionIntroduction

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Module Objectives

� Upon completion of this module, you should be able to:

� Describe what is the scope of IP in UTRAN in UA07

� Explain the principle of IuboIP, IuCSoIP, IuPSoIP, IuRoIP features

� Describe the hardware impacts



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Module Objectives [cont.]



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Table of Contents

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Table of Contents [cont.]

Switch to notes view!



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1 Features Presentation



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1.1 Introduction

� In UA05, all the interfaces are carried over ATM

� ATM backbone is used for all the control plane and user plane

� IP is used only for OAM



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1.1 Introduction

� In UA06, the IP Evolution

Nodes B

Node B

Iub

Iub Iu-PS

Iu-CS

Iur

RNC

RNCCSCN

PSCN



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1.1 Introduction

� The evolution is to replace completely the ATM transport network by an IP transport network.

� It is the scope of the UA07.1 release

� The UA07.1 release will provide the possibility to use only the IP transport network on all the interfaces with the following features:

� Native IP Iub Support

� RNC Support for IuCS over IP

� RNC Support for IuPS over IP

� RNC Support for IuR over IP IP Network

NodeBRNC

SGSN

Physical Layer

Ethernet

IP

Control Plane User Plane

RNC

SR



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1.1 Introduction

� In UA07, all the interfaces are carried over IP

Nodes B

Node B

Iub

Iub Iu-PS

Iu-CS

Iur

RNC

RNCCSCN

PSCN

RNSAP

SCCP

M3UA

SCTP

IP

Ethernet

SCCP - SAP

UDP

IP

Ethernet

RTP/RTCP

Iu UP

Control Plane User Plane

Control Plane

User Plane

Ethernet

IP

UDP

IuB FP

Ethernet

IP

UDP

IuB FP

Ethernet

IP

SCTP

NBAP

Control Plane

User Plane



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1.2 Native IP Iub Overview

�FEATURE DESCRIPTION

� Full IP transport on Iub : no ATM at all, no

pseudowires

� 3GPP Compliant Protocols : SCTP/IP in

Cplane, UDP/IP in Uplane

� Co-existence of ATM, Hybrid and IP NodeBs

on a given RNC

� IP and Ethernet QoS supported

� Node B synchronization : IEEE1588v2 (PTP)

�FEATURE VALUE

� OPEX reduction by using lower cost IP

transport

� Seamless migration to IP

� IP Carrier Grade

�DEPENDENCIES

� 4ptGigE card in RNC

� xCCM in BTS optionally with GE MDA

� External IEEE1588v2 server (or alternative

synch method)

� Ethernet switch/IP router for layer 2

transport architectures

IP / Ethernet

RNC Node B

IEEE1588 server

SR



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1.3 IuCS over IP Overview

� FEATURE DESCRIPTION

� 3GPP Compliant Protocols Simultaneous

support for ATM and IP stacks on Iu-CS

� Homogeneous transport for UP and CP only

(full IP or full ATM)

� Iu-CS Flex (ATM and IP Iu-CS instances)

� IP and Ethernet QoS support

� FEATURE VALUE

� OPEX savings through use of cheaper IP

transport

� Seamless migration


� DEPENDENCIES


� Ethernet Switch / IP Router for layer 2


ATM transport

IuCS Pool

IP transport

MSC

MGW

MSC

MGW

MSC

MGW

SR

RNC



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1.4 IuPS over IP Overview

� FEATURE DESCRIPTION

� 3GPP Compliant Protocols Simultaneous

support for ATM and IP stacks on Iu-PS

� Homogeneous transport for UP and CP only

(full IP or full ATM)

� Iu-PS Flex (ATM and IP Iu-CS instances)

� IP and Ethernet QoS support

� FEATURE VALUE

� OPEX savings through use of cheaper IP

transport

� Seamless migration


� DEPENDENCIES


� Ethernet Switch / IP Router for layer 2


ATM transport

IuPS Pool

IP transport

SGSN

GGSN

SGSN

GGSN

SGSN

GGSN

SRRNC



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1.5 Iur over IP Overview

�FEATURE DESCRIPTION

� Full IP transport on Iur : no ATM at all,

no pseudowires

� 3GPP Compliant Protocols

� Simultaneous support for ATM and IP

Drift RNCs (i.e. Iur instances)

� Homogeneous transport for UP and CP

only (full IP or full ATM)

� IP and Ethernet QoS supported

�FEATURE VALUE

� OPEX reduction by using lower cost IP

transport

� Seamless migration to IP

� Carrier Grade IP

�DEPENDENCIES


� IP Drift RNCs

� Ethernet switch/IP router for layer 2


IP / Ethernet

RNC

RNC

RNC

RNC

SR

SR

SR

SR



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1.6 IP backbone

�The IP backbone has to fulfill the following requirements:

� It is not necessarily fully dedicated to the UTRAN

� Ipv4 backbone

� DiffServ Capable for the QoS Management

RNC

NodeB

AggregationNetworkBackhauling

Note: The IP backbone is not in the scope of this training



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1.7 RNC Connection to the IP Backbone

� The RNC is connected to an IP backbone through a 7750 SR

� It is a layer 3 access router providing IP routing, DiffServ forwarding and L3 Carrier Grade.

� For redundancy purpose, this Service Router may be duplicated

RNC

IP Network7750 SR

ATM Network



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1.8 NodeB Connection to the IP backbone

There are 3 ways to connect the NodeB to the IP backbone:

� An Ethernet Access Module (EAM) can be added in front of the Node B and an Ethernet Access Termination (EAT) in front of the RNC to access an Ethernet backbone only (using ATM pseudowires for ATM transport). In the Alcatel-Lucent global solution, EAM is a SAR7705 and EAT is a SR7750.

� the xDSL access can be used also for IP/Ethernet

� An Ethernet access can be used in addition to the existing connection to the ATM backbone



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2 Hardware Impact



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2 Hardware Impact

2.1 RNC Hardware

� New cards must be added to support the IP transport features

� The RNC must be equipped with 2 GigE 4 ports cards.

This card provide 4 GigaEthernet ports supporting the following interfaces:

� 1000BaseLX

� 1000BaseSX interfaces

� The 4pGe card has an operating capability of full data line rate (1 Gbit/s) for each port, however, the aggregated backplane interface throughput for the four ports is 2.5 Gbit/s.



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2 Hardware Impact

2.2 RNC Hardware

� The 4ptGE cards routes IP packets from the RNC cards to the Network Elements (Node B and SGSN). They provide:

� Traffic management: QoS Mapping , Buffer Management, Queuing and Congestion Control, Scheduling, DiffServ Capable

� VLAN Support: to separate the traffic

� Defense Mechanisms with PDR (Protected Default Route) to spare the Layer 3 routing

RNC

4ptGE

4ptGE

PSFP

.

.

.

RAB

CP

INIP Network

SGSN



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2 Hardware Impact

2.3 RNC Hardware

� The 4pGigE cards must go in slots 14 & 15.

� If not present in the RNC, any PSFP / DCPS cards in slots 14 & 15 must be replaced by the two 4pGigE cards.

This is illustrated in the following figure:

PS07

PS06

PS05

PS04

PS03

PS02

CP01

CP00

PS13

PS12

PS11

PS10

OC309

OC308

CARD CAGE 1

CARD CAGE 2

PS15

PS14

GigE*15

GigE*14



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2 Hardware Impact

2.4 BTS

� The xCCM board is in NodeB

xCCM-U front panel

RJ-45 Fast Ethernet Port 2 will be used for Hybrid Iub IP connectivity

Embedded 4 E1/T1 ports

Embedded 4 E1/T1 ports

MDA 4 E1/T1 ports orGiga Ethernet

xCCM front panel

� The xCCM-U board is included in the d2U unit with2 xCEM-U

� New MDA can be plugged on the xCCM mother board

� to have a Gigabit Ethernet interface for Iub

MDA 4 E1/T1 ports orGiga Ethernet



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2 Hardware Impact

2.5 IP Backbone

� The UTRAN IP backbone and the CN IP backbone are supposed to be a level 3 or level 2 network with IPv4 addressing, IP (or IP/MPLS) routing and DiffServ forwarding.

� It is supposed to be secured and transparent : IP packets shall be conveyed without any modification of the UDP/IP headers because IP addresses and UDP ports are used as bearer identifiers.

� No NAT

IP Network

ATM NetworkNodeB

RNC



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End of ModuleUA07 WCDMA IP in UTRAN Description

Documents

01 Introduction