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– 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
© ZTE Corporation. All rights reserved3
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)
© ZTE Corporation. All rights reserved4
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
© ZTE Corporation. All rights reserved5
Deployment Considerations for NFV
xhaul
Fixed Access
Edge DCCentral DC
Internet
Management &
Orchestration
Control PlaneSession ControlSDN
RAN
ContentCDN Media
Media Plane
Authentication
© ZTE Corporation. All rights reserved6
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
© ZTE Corporation. All rights reserved7
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
© ZTE Corporation. All rights reserved8
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
© ZTE Corporation. All rights reserved9
Common or Service Specific Processing Logic
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
Common or Service Specific Processing Logic
Common or Service Specific Processing Logic
Traditional Elasticity
New Elasticity
© ZTE Corporation. All rights reserved10
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
© ZTE Corporation. All rights reserved11
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
© ZTE Corporation. All rights reserved12
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
© ZTE Corporation. All rights reserved13
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
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