Cloud-Native architecture will define the vRANfuture
Transcript of Cloud-Native architecture will define the vRANfuture
© 2020 Cisco and/or its affiliates. All rights reserved. Cisco Confidential
Cloud-Native architecture will define the vRAN future
Nov, 2020Mohamed Bakry
Head of Systems Engineering - SP Segment MEA
© 2020 Cisco and/or its affiliates. All rights reserved. Cisco Confidential
Road to Software Defined Telco and Digitization
• Cloudification• Disaggregation• Orchestration & Automation• Open APIs
© 2020 Cisco and/or its affiliates. All rights reserved. Cisco Confidential
Technology shifts enable the Evolution toward Cloudification and Digital service
DecompositionRadio Equipment Controller
Decomposition, CU/DU Functional Splits
AutomationOpen APIs, Pervasive Automation, Service Assurance, Network Slicing
ConvergenceBlended SLAs Services, Traffic Steering, Dynamic Path Optimization
Software CentricVirtualization, Programmable, Flexible,
Any-to-Any Connectivity
New RadioHigh Bandwidth, High Density, Low
Latency, Precise Timing and Synchronization
Higher frequency spectrum Larger radio channels Massive MIMOIncreased network density
Radio Technology Innovation
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The Evolution of Subscriber Management
The Shift The Benefits
Convergence of Mobile, Fixed & Cable
Reduced Transport CostsLower cost, higher bandwidth, simpler platforms in Aggregation/ Access.
Offload traffic at the edge of the network
Optimized OSS/BSS Integration
Single integration via centralized control plane significantly reduces OpEx
Subscriber MngSimplification
Single Subscriber view and orchestration across services. Unified Policy, new service offers
New Services & Better User Experience
Cater for low latency services and bring edge closer to end users.
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The Evolution of Subscriber ManagementArchitecture
Access Tunnels
Converged SDN Access Transport
Control Plane
User Plane Telco cloud
Internet
Enterprise
Public
cloud
PeeringBackhaul
FrontHaul
Mid-Haul
PremisesDevices
5G: 5GC/EPC
Wireline: BNG
Cable: CCAP
Subscriber Management
Gateway
Converged SDN CoreNetwork
Disaggregation and
Virtualization enables edgedeployment in the access
network
(a.k.a MEC)
Access Node(s)
Wireline
5G/Mobility
Cable
IP
E2E Subscriber ExperienceMulti-Domain Orchestration & Automation
Subscriber Services
TV
IoT
CDN
API
Wireline
Cable
Mobility/5G
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RAN Definitions
C-RAN: a centralized (cloud) RAN architecture based on cloud-compute; includes a centralized baseband unit (BBU), remote radio units (RRU) and fronthaul/transport
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Disaggregation and Open Interfaces
• Defining multi-vendor interface within DU, between radio and baseband
• Making 3GPP defined RAN interfaces “truly” multi-vendor
O-RAN MissionAutomation/Optimization
• Defining two new control loops
• Non-RT-RIC (in SMO)- A1 interface: between
Non-RT-RIC and RAN
• Near-RT-RIC (in RAN)- E2 Interface between N-
RT-RIC and CU/DU
Virtualization & Open HW/SW
• Cloudification
• SW Ref Design
• White-Box HW (HW ref architecture)
• Orchestration of cloud infrastructure
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vDUvDU
RAN Evolution and Definitions
EPCRRUBBU
Macro Site Core SiteBackhaulDRAN – Distributed RAN
(this is the traditional RAN architecture)
EPCRRUBBU
Macro Site Core SiteBackhaulCRAN – Centralised RAN BBU
RRU CPRI Fronthaul
C-RAN Hub
EPCRRUvBBU
Macro Site Core SiteBackhaul
VRAN – Virtualised RAN vBBURRU
vRAN PoolCPRI Fronthaul
EPCRUvDU
Macro Site Core Site
BackhaulORAN – Open vRAN vDURU
Edge DCOpen Fronthaul
vEPC
vCUMidhaulRegional DC
vCUMEC
Centralised RAN = BBU Hotel
Cloud RAN = BBU Pool (Elastic RAN)
GlossaryRRU = Remote Radio Unit
RU = Radio Unit
BBU – Baseband Unit
DU = Distributed Unit
CU = Centralised Unit
EPC = Evolved Packet Core
MEC = Multi-access Edge Compute
© 2019 Cisco and/or its affiliates. All rights reserved. Cisco Confidential
Decomposition Allows Cloudification (Virtual-RAN)
Anten
na
RU
Fronthaul
Anten
na
RU
CellSiteRouter
ToRSwServerServer
DistributedUnit
ToRSwServerServer
CentralizedUnit
midhaul Backhaul
DU
CUm/h
m/hDU
f/h
f/h
f/h
Tomobilecore
Hierarchy
Cloudification is occurs when Radio Signal Processing is implemented as software running in Cloud environments• Centralized Unit functions are non-real time and are easily virtualizable• Distributed Unit functions are real time and can be virtualized at some effort• Radio (Remote) Units are implemented as appliances
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The Cloud-Native TenetsDelivery & Deployment Model
Micro-Services
Modular, loosely coupled software services
Individually deployed and lifecycle managed
Containers
Virtualization and management of Micro services
Highly portable to different deployment targets
DevOps
Automate and manage rapid deployments
Isolate production changes and deploy once validated
Continuous Delivery
Automated continuous integration, validation and availability of containers
• Lower Time to Market• Always on latest code-base
• Easy to deploy; easy to scale• Smaller impact domains
• Faster bring-up• Lower infrastructure restriction
• Faster fallback and bug-fixes• Faster Feature rollout
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BHFH
Central DCs4G/5G
Small Cell
Mobile Core
MH BH
RUCellsite
COTS HW
Open vRAN and Modern Cloudified Mobile Network Infrastructure
“Modular” System Integration
Regional DCs
Automation & Multi-Domain Orchestration
Edge DCsvDU
UPFvCU
MEC Apps
COTS HW
COTS HW
PNF
Functional DecompositionFunctions Separated to Allow Flexible Placement and Optimization
Disaggregation into SW + HWSoftware-Centric Solutions Leveraging COTS Hardware
Optimize for Lower Cost OperationsAgility, Lower TCO, Increased Automation
Multi-Use Case5GNR, LTE, Small Cell, Indoor/Outdoor, mMIMO, Multi-band, mmWave, Private/Public, Enterprise/Consumer, etc.
Enable New ServicesIncreased Service Flexibility, Velocity
OpenModular, Open, Multi-vendor, More Options = Flexibility and Lower Cost Hybrid Cloud
UPF
RAN
Open Open Open