Achieving High Performance, Reliability and Security with ... · KPI targets Within-site...
Transcript of Achieving High Performance, Reliability and Security with ... · KPI targets Within-site...
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Achieving High Performance, Reliability and Security with Zero Touch 5G
Kathy Meier-Hellstern, PhDAssistant Vice PresidentAT&T Labs Research
IEEE Communications Quality and Reliability CommitteeEmerging Technology Reliability Roundtable (ETR-RT) Masala, FinlandAugust 26-27, 2019
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Speed through mmWave
• Travels short distances-> small cells
• Opportunistic placement required
Massive Connectivity
• High proliferation of low speed devices
Ultrareliable Low Latency Services
• Edge Cloud deployments that are close to users, coupled with high speed for some apps, e.g., AR/VR
• New RAN protocols
The 5G Landscape
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Open Interfaces
Software
Commodity hardware
Open design ModularSoftware-centric
LTE/5G3G/LTE
Proprietary MonolithicHardware-centric
Software/Hardware
• Virtualized Core • Separation of control and user plane (CUPS)• More open interfaces • 5G: Disaggregation and virtualized RAN
The Evolution to 5G - Infrastructure
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© 2019 AT&T Intellectual Property. AT&T, Globe logo, and DIRECTV are registered trademarks and service marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
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5G disaggregated network
RIC
Tower>100K
Tower / CO>10K
Edge Cloud>100
Central Cloud10+
Far edge cloud
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Basic Principles – Virtualized Service Designs for High Availability
Define KPI
targets
Within-site redundancy,
failover in secs
Multi-site design &
failover in secs
Fault detection measures
Mature software
VFs need to be in at least 2 Geo-locations to achieve ≥ 99.99% availability(99.9% = 526 min/yr downtime, 99.99% = 53 min/yr, 99.999% = 5.3 min/yr)
MEP(power/HVAC)
Compute &Storage
Platform Software
VF SW0-100 min
100-200 min
50-100 min
0-50 min
Single Site Downtime Ranges ~150 – 450 min/yr
Software-based Services Maturity Curve
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5G Reliability and Security Vulnerabilities
High speed mmWave has less robust propagation
•Sensitivity to environmental conditions can result in unreliable air interface
Massive connectivity
• Insecure IoT devices are vulnerable to infection
•Smaller units of capacity are more vulnerable to overload
Highly Distributed/Disaggregated Network
•Smaller blast radius, but in aggregate many more small failures
•Hard to keep track of large numbers of network elements
Ultra Reliable Low Latency Services
•No room for error – even a “blip” can create a problem for the applications
• Standards specify physical layer that includes dual connectivity
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5G Reliability and Security Vulnerabilities and Opportunities
High speed mmWave has less robust propagation
Massive connectivity
Highly Distributed/Disaggregated Network
Ultra Reliable Low Latency Services
Integrated Access Backhaul (IAB)
RAN Intelligent Controller (RIC)
Automation using non-real time RIC/ONAP
Multi-Access Edge Cloud (MEC)
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• Creates opportunities for “SDN-like” routing at RAN level
• Reduces cost by enabling wireless backhaul to fiber-connected donor nodes
Integrated Access Backhaul (IAB) improves resiliency for mmWave
DonorNode
DonorNode
FAP
FAP
Fiber
Fiber
Enables alternate routes and “SDN-Like” routing
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• ORAN-led open source under Linux Foundation
• Per UE Control
• xApps, driven by analytics, can perform per UE actions such as block, throttle, change QoS…
• Edge controls prevent cascading overloads/outages
Near Real-Time RAN Intelligent Controller (RIC)
Near real-time analytics and UE control at the edge to stop congestion before it propagates
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• Analytics: fault & congestion detection, root cause
• Control: Non real-time RIC
• Actions:
‒ Automated self-healing
‒ SON-like capabilities – beam management, traffic offload, load balancing
• Configuration automation and analytics to detect anomalies
Non real-time RIC (ONAP)
Automation to reduce downtime using automated fault detection & self healing
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• Low latency - located on customer premises
• Ability to isolate critical applications
• More secure for the Enterprise
• Opportunity for customer-specific high-availability cloud infrastructure that complement URLLC physical layer capabilities
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Multi-Access Edge Cloud (MEC) delivers low latency and high reliability
Central Office
Businesses
Homes
Cell sitesAT&T
Mobility Core
Applications
Low latency plus elasticity and scale/resiliency at the edge
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• 5G enables speed, massive scale and ultra reliable low latency services
• These are offered using a virtualized, highly distributed architecture for both RAN and Core
• High availability SDN and NFV design principles can be applied to Core components
• New RAN capabilities include IAB, RIC and MEC further enhance performance, reliability and security
Conclusions