Modular Approach for NFV

– On Separation of Control Plane and Media Plane

Dr. Li Mo

CTO Group, ZTE TX

Modular Approach for NFV

© ZTE Corporation. All rights reserved2

Application Platform (Big Data Analytics, Device Management, Development Environment)

The Big Picture – Networking 20/20

Physical Terminals (Fixed, Mobile, Sensors)

Fixed Access Network

GPON P2P GPON P2P

Mobile Access Network Physical Data Center

NetworkingStorageComputing NetworkingStorageComputing

WAN

SDN Controller

Virtual Network Functions (VNF) (Mobility Management, Policy, Accounting, Authentication, Resource, etc.)

Network and Resource Orchestrator

Cloud Management

Connectivity Service (e.g.

VPN)

Traditional Consumer

Service (e.g. VoLTE, IPTV)

Traditional Enterprise

Service (e.g. Centrex)

Smart Home Applications

Smart Vehicle Applications

Health Applications

SDN Plugin

VNF Manager


Service Development and Deployment in Networking 20/20

Service Development & Test

Model library

Test tools

Service Lifecycle Management

OSS

VNFM

Service Instances

VNF A

VNF B

VNF D

Service Chain A

VNF A

VNF F

VNF G

Service Chain B

Lega

cy E

quip

men

t

Design

Service Authentication & Orchestration

BSS

PolicyNS, VNF Database

VNF A VNF Z

Service Chain A

Service Chain Z

NFV Orchestrator

O&MBusiness

Development Environment

Analytics (Big Data)


On the Way to Full Automatic Deployment – Promise of SDN and NFV

2013~2015 2015~2016 2016~2018 Post 2018

• True “Network Function Virtualization supporting business development

• Note: Without standardization, vendor lock-in will be reality. The necessary evil, OSS, shall be history.

(Overall Capability Opening & Innovation)

Challenge

VIM

NSO

3rd Party Applications/BSS

Business Enabling/Big Data

VNFSDN-C

Virtualization

VNFVNF

VNF

VNFVNF

• Network Service automatic deployment & elasticity with big data

• Network Service Orchestration with open programmable environment

• Note: Starting to extract “Network Function” from “Equipment”

(Network Service Opening)

Cloudification

VIM

NSOBig Data

3rd Party Applications/BSS

Challenge

SDN-C

OSS

Virtualization

VNEVNFVNF

VNFVNF

• VNF elasticity & lifecycle management

• Emerging of VNF • More Roles for Big Data • Distributed NFVI resource pool

scheduling • Note: SDN Controller is part of

virtualization layer while driven by VNF/VNE.

(Resource Pooling)

Virtualize

VIM

Challenge

SDN-CVirtualization

VNEVNEVNFVNF

Big Data

OSS BSS

• Performance enhancement • Reliability enhancement • Hardware compatibility • Note: Equipment

Virtualization. Proof of Concept phase of NFV

(SW& HW Decomposition)

Decouple

Challenge

VM VM VM

VNE VNE VNE

OSS BSS

Big Data Big Data

VNFM

VNFM

VNFM


Deployment Considerations for NFV

xhaul

Fixed Access

Edge DCCentral DC

Internet

Management &

Orchestration

Control PlaneSession ControlSDN

RAN

ContentCDN Media

Media Plane

Authentication


COTS in Media Plane and COTS in Control Plane

Servers on the Edge Data Center Servers on the Center Data Center

Processing Media Processing Control

I/O Intensive Computation Intensive

Limited State Information Massive State Information

Route optimization, Delay, … Maintenance Intensive

Limited Customer Information Sensitive Information

Normally Physically Distributed Normally Centralized

Server Requirements Are Very Different


Server Technology Evolution

Server

OMNI Path

Si-PhAEP Storage

Silicon Photonics

Connectivity – Silicon Photonics

Processing Elements

Server – RSA Architecture

Storage

FPGA

X86 AEP

NVMe SSD SAS/SATA

Distributed Storage

PCIe

IP SAN

Physical Networking System Decoupling

50 Gbps

100 Gbps

400 Gbps

1.6 Tbps

CPU

Sharing FANsOn Rack IO/Networking

Sharing Processing and Storage


Architectural Considerations

Management

FCAPS

VNFM

Components Deployment

Network Service Orchestration

Fault Correlation

Hardware Monitoring

Databases (Control Plane)

Persistent Data

Subscription Database

Service Database

Resource Database

Link Database Subscription

DatabaseService

DatabaseResource Database

Link State Database

Common Network Service Logic (Control or Media Plane)

Subscription Database Load Balance

Service DatabaseSignaling

Processing

Link Database Interface

Logic

Stateless

Specific Network Service Logic (Control or Media Plane)

Subscription Database Mobility Management

Service DatabaseSDN

Controller

Link Database

xCSCF Service

Stateless


Common or Service Specific Processing Logic


Centralized Data Base (Persistent Data)

New VM in the same or

different Data Center

New VM in the same or

different Data Center

Advantage of the Architecture – Easy Elasticity



Traditional Elasticity

New Elasticity


Advantage of the Architecture – Easy Redundancy

Traditional 1+1

Active Server (Service Logic and

Data)

Standby Server (Service Logic and

Data)

Data Sync

Standby Server (Service Logic,

Idle)Active Server (Service Logic)

Active Centralized Data Base

Standby Centralized Data Base

Data Sync New 1+1


Advantage of the Architecture – Easy Service Deployment

xhaul

Fixed Access

Central DC

Internet

Management &

Orchestration

Control PlaneSession ControlSDN

Edge DC

Media Plane

Authentication

Edge DC

Media Plane

vEPC Base

sGW IoT vEPC

vEPC Base

pGW vEPC+GI LAN


Application Examples – China Unicom

ZTE vEPC

Multi-vendor NFV environment ● NFVO: ZTE (vManager), HP(NFV Director);

● VNFM: ZTE (vManager );

● VNFs: ZTE (vEPC & vIMS);

● EMS: ZTE (NetNumen U31)

● VIM: ZTE (TECS) , HP(Helion);

● HW: HP (BL460c Gen9) ZTE (ZXCLOUD E9000).

PoC● E2E VoLTE service verification: LTE service,Voice service,

billing ● NS&VNF life cycle management: registration, deployment, expansion, hot migration, upgrade;

● Elastic scalability: manual and automatic Scale-in & Scale-out;

● User plane acceleration technology: DPDK, SR-IOV;

● vGW based iSDN: separate control plane and user plane;

ZTE vIMS

KVM

HP NFVO

ZTEVNFM

ZTE/HP VIMHP Hardware Resource

vGW-U

vEPC-C Helion

TECS

VNFM

vIMS NFVO

vGW-U


Application Examples – China Mobile

Mobile office

Dev Tool Design Develop Compile

Test

Visual communication

Family medical care

Multimedia call center

◆ Cloud Works: Carrier-class

open ecosystem

• Convenient for the operator

to quickly launch new

services for enterprise

customers

• Open API to partners,

diversified services

Ops Framework…HA/DRLoad

control Elastic scale-in/

outLifecycle

managementAutomatic

deploy

Service API capability setBasic API set

ZTE Cloud Works

Self-operated APP Partner APP

IPTV visual communication

Operation API capability setSignaling Protocol

stack

VPN DPI

Access management Policy routing

… …

Voice Video

RCS Multimedia conference

QoS control Subscriber management

… …

Big data analysis

Precise marketing

Closed loop control Charging

… …

… …

API Integration Framework

Message

Database

…

…

Ability open layer

Home security

Thank You

Modular Approach for NFV

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