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88th IETF @ Vancouver



HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential !

Introduction

• IP RAN (Radio Access Network) is a run solution using IP technology to

provide network services between UE devices and mobile core network

• IP RAN has been widely used to provide varies access modes with high

scalability and flexibility, it reduced network construction cost and prot

codes of investments.

• However the existing IP RAN implementation needs to be improved due

" Manual configuration Point-by-Point

" Complex network construct and service deployment

" Low troubleshooting efficiency

• Central Controlled IP RAN (SDN enabled) can further improve the IP RA

resolve these problems



HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential

Central Controlled IP RAN Use Case

ATM RNC

IP RNC/S-GW/MME

BSC

G E

S T M - 1

LAST MILE ACCESS AGGREGATION

LTE/WiMax

Enterprise

UMTS HSPA

UMTS R99/R4

GSM/GPRS

FE

ML-PPP E1

TDM E1

GE

IMA E1

RNC/SGW/MME

RSG

RSG

CSG

AGG

CSG

CSG

AGG

Controller

Main

Backup

ControlAgent

ControlAgent

ControlAgent

Central Controller

ControlAgent

Control

Agent

ControlAgent

Control

Agent

ControlAgent

ControlAgent

Applied in China Telecom’s Access and Aggregation Network



HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential !

BS1

BS2

KL/ L)B&8#

Controller

Control Agent

Forwarding Node 1

BaseRouting

Control Agent

Forwarding Node 4

BaseRouting

Control Agent

Forwarding Node 2

BaseRouting

Control Agent

Forwarding Node 5

BaseRouting

Cont Age

Forwarding Nod

BaseRouting

Cont Age

Forwarding Nod

BaseRouting

N

!"#$ %&!'(%!')*+,-.,* %

Third Party App

CC IP RAN Network Architecture

BS1

BS2

RNC/SGW/MME/BSC

!"#$ %&!'(%!')*+,-.,* %&!'(%!')*+,-.,*

RSGCSG

ASG

ASG

RSGCSG

BS1 CSG

/0.1,-230.45 7" 8(9 9,*:0-;

/,.*-45 /0.*-055,< 7" 8(9 9,*:0-;

• Major Control functions are moved to

controller from network devices

•

Controller has E2E control capability

•

Access, Aggregation and RSG are

forwarding devices.

• Programmability of controller

•

Open to third party applications

•

ASG: Ag

•

BS: Bas

•

CSG: C

• RSG: R



HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

System Architecture

!

L2 Label PayloadLabel

Low Cost Device

MPLS en-caped packet

Access Node 1

CP-DP

MPLS internal networkWithout LDP

Access Node n

# Functions of Controller

$ CP-DP control protocol features

$

Network resource management features$ Network virtualization features

$ Network protocol layer, IGP,LDP/RSVP

$ Network service layer,L2 (VPWS/VPLS) VPN,

L3 VPN

$ Fault, Alarm, NB-API

# Functions of Forwarding Node

$ IP/ MPLS forwarding

$ CP-DP protocol features

$ Control Agent

$ Light IGP for connectivity



HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential

BS1

BS3

7=

7=

7>

7>

$&9 &0?43.

7>

RNC/SGW/

MME/BSC

Contr ol

Agen

t

CSG1

BaseRoutin

g

Contr ol

Agen

t

CSG1

BaseRoutin

g

SDNController

ASG1

SDNController

ASG2

Contr ol

Agen

t

RSG1

BaseRoutin

g

Contr ol

Agen

t

RSG2

BaseRoutin

g

7@

7A

7A

7B 7C

7C Built-in M

Controller on

BS1

BS3

7=

7=

7>

7>

$&9 &0?43.

SDNController

7>

ControlAgent

CSG1

BaseRouting

ControlAgent

CSG1

BaseRouting

ControlAgent

ASG1

BaseRouting

ControlAgent

ASG2

BaseRouting

ControAgen

RSG1

BaseRouting

ControAgen

RSG2

BaseRouting

7>

7>

7>

7>

7B

Stand-along Mode:Controller on Server

Controller Deployment Options



HUAWEI TECHNOLOGIES CO., LTD.

Central Controlled IP RAN Overview

Mobile Backhaul Central Controlled IP

! Simple O&M"

Free Service Planning, Plug and Play

"

Automatic protocols deployment and fast s

"

Fast trouble shooting

ATM RNC

Last Mile Access Aggregation RNC/SGW/MME

RSG

RSG

CSG

BTS

NodeB / eNB

E1

Eth

IP RNC/S-GW/MME

NodeB

ATM

BSC

STM-1

AGG

AGG

CSG

CSG

Manual configuration

point-by-point

Last Mile Access Aggregatio

BTS

NodeB / eNB

E1

Eth

NodeB

ATM

CSG

CSG

CSG

AGG

AGG

ControlPlane

ControlPlane

ControlPlane

Main

Backup

CentralController

ControlAgent

ControlAgent

ControlAgent




Planning IP Address Dividing IGP Area Planning CS

SDN-based Mobile BackhaulFree Serv

CSG

AGG AGG

CSGCSG

Planning IP Address Dividing IGP Area Planning CSG

Mobile Backhaul Complex service

Plug and PlayZero Touch for Bas

Main BackupCentral

Controller

Control Agent

Control Agent

Control Agent

Current IP RANAccess Solution

C

IGP Yes

RSVP-TE Yes

ProtocolSolution

Free Service Planning, Plug and Play




Automatic Protocols Deployment and Fast Services

Mobile Backhaul Central Controlled IP

Protocol-based point-by-point services launch Service-based end-to-end ser

Improves effic

services la

Lowers skillrequirements of staff

Simple protocol Automatic configuration

ATM RNC


RSG

RSG

BTS

NodeB / eNB

E1

Eth

IP RNC/S-GW/MME

NodeB

ATM

BSC

STM-1

AGG

AGG

CSG

CSG

CSG

IGP/LDP/

RSVP

IGP/LDP/RSVP

IGP/LDP/

RSVP IGP/LDP/

RSVP

IGP/LDP/

RSVP

L2VPN

L2VPN

Last Mile Access Aggrega

BTS

NodeB / eNB

E1

Eth

NodeB

ATM

CSG

CSG

AGG

AGG

CSG

ControlPlane

ControlPlane

ControlPlane

Main

Backup

CentralController

ControlAgent

ControlAgent

ControlAgent

Virtual-cluster

enable

Configure remote-

interface




ATM RNC


RSG

RSG

CSG

BTS

NodeB/eNB

E1

Eth

IP RNC/S-GW/MME

NodeB

ATM

BSC

STM-1

AGG

AGG

CSG

CSG

Fast Trouble shooting

Mobile Backhaul SDN-based Mobile Ba

Last Mile Access Aggregati

BTS

NodeB/eNB

E1

Eth

NodeB

ATM

CSG

CSG

CSG

AGG

AGG

ControlPlane

ControlPlane

ControlPlane

Main

Backup

CentralController

ControlAgent

ControlAgent

ControlAgent

NMS NMS

failure failure

Trouble shooting on

each node

Each node

sends alarmindependently

T

oC

Alarm analysis for

Locating rootcauses of fault



Thank youwww.huawei.com

Copyright©2013 Huawei Technologies Co., Ltd. All Rights Reserved.

The information in this document may contain predictive statements including, without limitation, statements regarding

and operating results, future product portfolio, new technology, etc. There are a number of factors that could cause

developments to differ materially from those expressed or implied in the predictive statements. Therefore, such informareference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any tim

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