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Virtualized Wireless Infrastructure

Virtualized Wireless Infrastructure. Sachin Katti Assistant Professor, EE & CS Stanford University. What does it take to…. Open the wireless infrastructure so users can choose any free spectrum, any network, or many networks, any time?. Sprint WiMAX. AT&T 3G. Any network…. Sprint WiMAX.

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Virtualized Wireless Infrastructure

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  1. Virtualized Wireless Infrastructure SachinKatti Assistant Professor, EE & CS Stanford University

  2. What does it take to….. Open the wireless infrastructure so users can choose any free spectrum, any network, or many networks, any time?

  3. Sprint WiMAX AT&T 3G Any network….

  4. Sprint WiMAX AT&T 3G Many networks….

  5. What does it take to give users choice?

  6. Wish List • Instantaneous contracts with any physical network, independent of its owner or radio technology • A network-independent way to choose a network, and to control mobility

  7. Design Choice • Establish my own instantaneous contracts and control the network (hard), or • Delegate to an entity in the infrastructure • A service provider • My own agent Conceptually the same; we start by delegating

  8. Requirement Technical • Radio-independent control layer • A method for a service provider to control my flows on my behalf Business • An incentive for infrastructure owners to open access to service providers

  9. “AT&T” “Vodafone” New Service Billing, Mobility New Service Billing, Mobility New Service Feature Feature Network OS Network OS Network OS Network OS “Slicing” Layer OpenFlow AP OpenFlow Switch OpenFlow Switch OpenFlow Switch OpenFlow BS

  10. Consequences Radio-independent control layer • Service provider controls user flows • Easy handover between physical networks • Can use several networks simultaneously • Service innovation by service providers A method to share the physical infrastructure • Isolation between service providers • Short-term or long-term lease of rights-of-way

  11. AT&T Service Layer: Authentication, Billing, Mobility Management, Routing, … Network Layer: Wireline Network Radio Network: Spectrum, Radios

  12. Separating the service from the network Service Layer: Authentication, Billing, Mobility Management, Routing, … Separation/Virtualization Network Layer: Wireline Network Radio Network: Spectrum, Radios

  13. Service provider controls a slice across physical networks “AT&T” Service Service Service Service Separation/Virtualization Network Network Network Network Radio Network: Spectrum, Radios

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