Central Controlled IPRANdraft-khy-rtgwg-central-controlled-ipran-00.txt
Katherine Zhao([email protected])GuangMing Yong ([email protected])
Jiehui Hu ([email protected])
88th IETF @ Vancouver
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 2
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 protects
codes of investments.
• However the existing IP RAN implementation needs to be improved due to
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 RAN and
resolve these problems
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Central Controlled IP RAN Use Case
ATM RNC
IP RNC/S-GW/MME
BSCSTM-1
GE
STM-1
LAST MILE ACCESS AGGREGATION
LTE/WiMax
Enterprise
UMTS HSPA
UMTS R99/R4
GSM/GPRSFE
ML-PPP E1
TDM E1
GE
IMA E1
RNC/SGW/MME
RSG
RSG
CSG
AGG
CSG
CSG
AGG
Controller
Main
BackupControl Agent
Control Agent
Control Agent
Central Controller
Control Agent
Control Agent
Control Agent
Control Agent
Control Agent
Control Agent
Applied in China Telecom’s Access and Aggregation Network
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 4
BS1
BS2
SDN Domain
Controller
RNC/SGW/
MME/BSC
ControlAgent
Forwarding Node 1
Base Routing
ControlAgent
Forwarding Node 4
Base Routing
ControlAgent
Forwarding Node 2
Base Routing
ControlAgent
Forwarding Node 5
Base Routing
ControlAgent
Forwarding Node 3
Base Routing
ControlAgent
Forwarding Node 6
Base Routing
NMG
MPLSTDM/ATM/Ethernet TDM/ATM/Ethernet
Third Party App
CC IP RAN Network ArchitectureBS1
BS2
RNC/SGW/
MME/BSC
MPLSTDM/ATM/Ethernet TDM/ATM/Ethernet
RSGCSG
ASG
ASG
RSGCSG
BS1 CSG
Conversional IP RAN Network
Central Controlled IP RAN Network
• 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: Aggregation Service Gateway
• BS: Base Station
• CSG: Cell Site Gateway
• RSG: Radio Service Gateway
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System Architecture
Page 5
L2 Label PayloadLabel
Low Cost Device Open Architecture
MPLS en-caped packet
HOST ASR 9K
(single chassis OR cluster)
Controller
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 Page 6
BS1
BS3
I1
I1
I2
I2
SDN Domain
I2RNC/SGW/MME/BSC
Control
Agent
CSG1
Base Routin
g
Control
Agent
CSG1
Base Routin
g
SDN Controller
ASG1
SDN Controller
ASG2
Control
Agent
RSG1
Base Routin
g
Control
Agent
RSG2
Base Routin
g
I6
I4
I4
I3I5
I5 Built-in Mode: Controller on Device
BS1
BS3
I1
I1
I2
I2
SDN Domain
SDN Controller
I2RNC/SGW/
MME/BSC
ControlAgent
CSG1
Base Routing
ControlAgent
CSG1
Base Routing
ControlAgent
ASG1
Base Routing
ControlAgent
ASG2
Base Routing
ControlAgent
RSG1
Base Routing
ControlAgent
RSG2
Base Routing
I2
I2
I2
I2
I3
I5
I5Stand-along Mode: Controller on Server
Controller Deployment Options
Page 7HUAWEI TECHNOLOGIES CO., LTD.
Central Controlled IP RAN Overview
Mobile Backhaul Central Controlled IP RAN
Simple O&M Free Service Planning, Plug and Play
Automatic protocols deployment and fast services
launch
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
BSCSTM-1
STM-1
GE
AGG
AGG
CSG
CSG
Manual configuration point-by-point
ATM RNC
Last Mile Access Aggregation RNC/SGW/MME
RSG
RSG
BTS
NodeB / eNB
E1
Eth
IP RNC/S-GW/MME
NodeB
ATM
BSCSTM-1
STM-1
GE
CSG
CSG
CSG
AGG
AGG
Control Plane
Control Plane
Control Plane
Main
Backup
Central Controlle
r
Control Agent
Control Agent
Control Agent
Page 8HUAWEI TECHNOLOGIES CO., LTD.
Planning IP Address Dividing IGP Area Planning CSG&AGG ring relations
SDN-based Mobile Backhaul : Free Services Planning
CSG
AGG AGG
CSG CSG
Planning IP Address Dividing IGP Area Planning CSG&AGG ring relations
Mobile Backhaul : Complex services planning
SavingPlug and Play , Zero Touch for Basic
Network
Main BackupCentral
Controller
Control Agent
Control Agent
Control Agent
Current IP RAN Access Solution
Central Controlled IP RAN
IGP Yes Automatic deployment
RSVP-TE Yes No
ProtocolSolution
Free Service Planning, Plug and Play
Page 9HUAWEI TECHNOLOGIES CO., LTD.
Automatic Protocols Deployment and Fast Services Launch
Mobile Backhaul Central Controlled IP RAN
Protocol-based point-by-point services launch Service-based end-to-end services launch
Improves efficiency of services launch
Lowers skill requirements of staff
Simple protocol Automatic configuration
ATM RNC
Last Mile Access Aggregation RNC/SGW/MME
RSG
RSG
BTS
NodeB / eNB
E1
Eth
IP RNC/S-GW/MME
NodeB
ATM
BSCSTM-1
STM-1
GE
AGG
AGG
CSG
CSG
CSG
IGP/LDP/RSVP
IGP/LDP/RSVP
IGP/LDP/RSVPIGP/
LDP/RSVP
IGP/LDP/RSVP
L2VPN
L2VPN
ATM RNC
Last Mile Access Aggregation RNC/SGW/MME
RSG
RSG
BTS
NodeB / eNB
E1
Eth
IP RNC/S-GW/MME
NodeB
ATM
BSCSTM-1
STM-1
GE
CSG
CSG
AGG
AGG
CSG
Control Plane
Control Plane
Control Plane
Main
Backup
Central Controlle
r
Control Agent
Control Agent
Control Agent
Virtual-cluster enable
Configure remote-interface
Page 10HUAWEI TECHNOLOGIES CO., LTD.
ATM RNC
Last Mile Access Aggregation RNC/SGW/MME
RSG
RSG
CSG
BTS
NodeB/eNB
E1
Eth
IP RNC/S-GW/MME
NodeB
ATM
BSCSTM-1
STM-1
GE
AGG
AGG
CSG
CSG
Fast Trouble shooting
Mobile Backhaul SDN-based Mobile Backhaul
ATM RNC
Last Mile Access Aggregation RNC/SGW/MME
RSG
RSG
BTS
NodeB/eNB
E1
Eth
IP RNC/S-GW/MME
NodeB
ATM
BSCSTM-1
STM-1
GE
CSG
CSG
CSG
AGG
AGG
Control Plane
Control Plane
Control Plane
Main
Backup
Central Controlle
r
Control Agent
Control Agent
Control Agent
NMS NMS
failure failure
② Trouble shooting on each node
① Each node sends alarm independently
② Trouble shooting only on Central Controller
① Alarm analysis for Locating root causes of fault
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