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Future services challenges

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"Future services challenges" par Djamal Zeghlache, lors de la journée Futur & Ruptures du 31 janvier 2019.

Veröffentlicht in: Ingenieurwesen
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Future services challenges

  1. 1. Réseaux et Services Multimédia MobilesDNAC 2014 TSP-RS2M Futur et Ruptures January 31st , 2019 Djamal Zeghlache Future Services Challenges
  2. 2. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu2 Impact of emerging paradigms and enablers ■ Control and data plane Separation Software Defined Networks o Control out of switches, routers and network nodes  Separation: control out of network nodes eases management, network nodes dedicated to forwarding  Speed and scalability, security and protection Copied without permission from: https://res.mdpi.com/sustainability/sustainability-08- 00919/article_deploy/html/images/sustainability-08-00919-g001.png
  3. 3. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu3 Impact of emerging paradigms and enablers ■ Software and hardware separation – NFV o Virtualisation of network functions  Network Functions as code in hosts, platforms, containers, produced eventually as micro services  Flexibility and reduced production cycles Design principles and practices, integration complexity, test and validation issues, security, malware, protection Copied without permission from: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwia6f_M6pPgAhVHUhoKHfVzBaMQjRx 6BAgBEAU&url=http%3A%2F%2Fwww.techplayon.com%2Fnetwork-function-virtualization-nfv- architecture%2F&psig=AOvVaw3bykLPpiQiQpC6ApPT-Udm&ust=1548880194738824
  4. 4. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu4 Impact of emerging paradigms and enablers ■ Cloud computing o Virtualization of servers and storage  Everything as a Service, pay per use, no investment  Lock in and specific APIs, dependence on hosting environment IaaS Storage PaaS SaaS
  5. 5. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu5 Impact of emerging paradigms & enablers SDN NFVCloud
  6. 6. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu6 Impact of emerging paradigms & enablers From5GSystemDesignbyPatrickMarshandco. SDN NFVCloud
  7. 7. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu7 Missing interfaces and data models ■ Slicing concept ■ Multi domain issues (even mono-domain...) o For multi-domain and multi-operator orchestration, information on resource and service capabilities should be exchanged o Define common mechanisms/standardization: same semantics and abstractions  common information and data models and agreed interfaces Nokia5GNetwork|Unleashingthepotentialof5G|nokia.com
  8. 8. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu8 Impact of emerging paradigms & enablers ■ Issues and challenges o Separation/loose coupling essential but uncoordinated decomposition leads to interoperability, interworking and integration issues o Everything is a service: combined, composed, orchestrated and deployed dynamically in place and time but this generates overwhelming complexity.  Increasing role and use of open source  Providers’ interfaces not so open, combining and composing from heterogeneous sources a real challenge  Multiple solutions available, no smooth integration, adaptation often required, growing complexity o Increasing sources of dynamic variations: dynamic infrastructure configuration usage, social networks, services and functions are mobile, dynamic placement, traffic as always, constant adaptation, dynamic slice deployment as well…
  9. 9. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu9 Issues and possible remedies ■ Address interoperability and interworking via semantically richer and more versatile interfaces o Focus on services and interface properties, e.g. enrich semantically “node type” and “data model” in orchestrators (TOSCA) or simply push abstraction & intent based interactions ■ Introduce more intelligence in the infrastructures o In-network AI  Multi-agent based cooperation for reconciliation of the multi-layer or plane views • Faced with multiple decision points and control loops not necessarily working cohesively or even in conflict • Stand alone versus integrated tests and evaluation  Reinforced learning of emerging behaviours
  10. 10. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu + DRL + DRL 10 How about in network Learning and AI ? ■ Classical data-driven approach to identify best Artificial Neural Network configuration that fits input-output data so the ANN provides optimum output for unobserved data ■ Complement ANN with prior information from expert knowledge (from simplified approximate models)
  11. 11. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu11 Possible approach to address multiple time scales and inner and outer loops in the overall architecture
  12. 12. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu12 Potential Multi Agent Systems approaches  Explore use of cooperative multi- agent systems for network services ■ Multi-agent system (used in games) o Centralised critic: stabilise learning to coordinate agents o Counterfactual baseline: multi- agent assignment o Efficient critic representation: scales to some extent ■ Scale o minimize interactions, control state-space o State explosion problem. State space exponential with number of actions in Reinforcement learning systems  Problems can be addressed using neural networks, reinforcement learning and AI: ■ Network traffic classification via neural networks ■ Intelligent networking ■ Intrusion detection ■ Anomaly detection, degradations predictions, SLO /SLA violations ■ Network monitoring and data analytics for network services management  Overall cooperation & reconciliation of agents operating at multiple levels…
  13. 13. Futur et Ruptures – 31 janvier 2019 Future Services Challenges -djamal.zeghlache@telecom-sudparis.eu13 Thank You Q & A

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