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  • Hi, my name is Reza Rokui,

  • I'm a product line manager (PLM) at Nokia.

  • I'm responsible for the carrier-assist solution for 5G network slicing.

  • In today's talk we are going to talk about the 5G network slicing

  • and how the carrier-assist solution can be used for automation,

  • assurance, and optimization of transport slices.

  • Network slices are an end-to-end concept as is shown here,

  • Operator Y has three customers: BMW, Fiat and Public safety,

  • and each one needs multiple

  • end-to-end individual, independent, logical networks.

  • Each of these networks are called network slices,

  • the color represents the SLA requirement for each of them.

  • In this example, Operator Y created five network slices.

  • It contains RAN slices, each of the network slices

  • contain RAN slices, which is a context in your RAN,

  • core slices, which is a context and personality in core,

  • and transport slices which are the connectivity between RAN and core.

  • Each individual domain has a controller,

  • RAN controller, core controller, transport controller,

  • and we have an end-to-end orchestrator.

  • Let's get back to the Network and see how, for example,

  • the green Infotainment slice is created in this network.

  • The logical flow is, I have a customer, Honda,

  • who needs an end-to-end network slice for Infotainment

  • and the budget for the SLA is 10 Mb/s.

  • The customer portal sends a request to the Operator.

  • And the Operator uses its network slice blueprints,

  • or templates, to generate a network slice profile.

  • And after that it goes through various decompositions,

  • triggering various actions in the network.

  • The first thing it does, it sends a request to NFVO,

  • which is creating the virtual RAN, virtual core,

  • or both, if it is needed.

  • The second portion is, it sends a request to

  • the RAN controller to create the RAN slice,

  • and give the personality to the RAN equipment.

  • By the same token, it sends a request to the 5G core controller

  • to create the core slice which is a personality in the core.

  • And last, but not least, it sends a request

  • to the transport slice controller

  • to create the connectivity between this, RAN and core.

  • At this point, it's stitching all these slices,

  • creating a single end-to-end network slice for a specific customer

  • which is from the service type that is explained before.

  • The role of the carrier-SDN solution from Nokia

  • is to control for the transport slice, as is shown in this picture.

  • Interface for 4 and 5 are defined in 3GPP

  • and interface 6, that is not defined in any

  • Standardized Development Organizations (SDOs) yet

  • and Nokia is working towards making that one standard as well.

  • This is the network that I am going to use for a portion of the demo.

  • I have a transport network which is connecting the RAN to the core.

  • Network Service Platform (NSP) as a transport slice controller,

  • is used for three different use cases,

  • automation transport slices,

  • monitoring of the transport slices, and optimization.

  • In the demo I just showed optimization,

  • but these are the three important use cases

  • that should be addressed by any transport slice controller.

  • During the demo, NSP receives various connectivity APIs from the northbound,

  • during the demo POSTMAN is simulating those APIs

  • The transport slice controller intelligently receives that message,

  • and creates the services, tunnel and LSP,

  • which are needed in the network.

  • Let's get back to the demo.

  • This is NSP Launchpad Service Fulfillment,

  • and IP/MPLS Optimization and Service Supervision application

  • are used in the context of transport slices.

  • The first transport slice is created

  • for the Honda Infotainment. The service time and S-NSSAI is 10 and 20,

  • and we showed the optimization of

  • how NSP is used for the monitoring of the transport slices.

  • When we inject the latency of 20 milliseconds

  • for the IGP link we will see the latency is changed.

  • And we will see momentarily that readout happen in the network,

  • in other words NSP intelligently monitors transport slices

  • and we do the readout.

  • If I put the latency back to 2 milliseconds again,

  • nothing will happen because, in this case, the path is still valid,

  • unless I go to the readout and after readout

  • we will see that the NSP again brings back the original path of the LSP.

  • In summary, carrier-SDN solution from Nokia

  • is addressing the 5G transport slice in three important areas:

  • automation or creation of the transport slices,

  • assurance or monitoring of the transport slices,

  • and closed-loop optimization.

  • These are the three main important aspects that should

  • be addressed with any transport slice controller.

  • Thank you for your attention, and hopefully I see you later.

Hi, my name is Reza Rokui,

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5G network slicing: automation, assurance and optimization of 5G transport slices

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    golemant   に公開 2020 年 01 月 02 日
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