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Network Slicing and SDN: New Opportunities for Telecom Operators

Network Slicing and SDN: New Opportunities for Telecom Operators. Jishnu Aravindakshan & Kumar N Sivarajan. A network slice : spans across multiple parts of the network infrastructure ( e.g., terminal , access network, core network and transport network)

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Network Slicing and SDN: New Opportunities for Telecom Operators

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  1. Network Slicing and SDN: New Opportunities for Telecom Operators Jishnu Aravindakshan & Kumar N Sivarajan

  2. A network slice : • spans across multiple parts of the network infrastructure (e.g., terminal, access network, core network and transport network) • can be deployed across multiple operators. • comprises dedicated and/or shared resources, e.g. in terms of processing power, storage, and bandwidth and has isolation from the other network slices. • What is a Network Slice? IoT (mMTC) Slice Broadband (eMBB) Slice Low latency (uRLLC) Slice “Internet”Slice Infrastructure Layer

  3. Slice = Virtual Machine (VM)+Virtual Network (VN) Virtual Machine Virtual Network Routers Compute Switches Storage BS/OLTs WDM/ROADM

  4. Slice Characteristics: Network Capability Source: GSMA

  5. Application or Service Oriented: Not network oriented. • Slice Characteristics: Network Services Source: GSMA

  6. Network Slices are Specific to Industry Verticals Slice requirements will be different for each industry vertical Source: GSMA

  7. Application of Slice for Automotive (EV) Vertical V2X Slice (Visited) V2X Slice (Home) Slice Roaming V2X Slice Slice Analytics IIoT Slice Slice Provisioning IIoT Slice V2X Slice Slice Integration

  8. Virtual Network (VN): Focus of remaining talk VM#1 VM#2 VN#1 VN#2 Routers Compute Switches Storage BS/OLTs WDM/ROADM

  9. Implemented as VNF in core cloud Virtualized core elements on private cloud • Building the Communication Slice through SDN PGW SGW SON CDN R_CORD XOS BNG CDN C-NAT Firewall A multi-tenant service orchestration layer that manages a collection of services Developing SDN/NFV for network slicing VPN WANAcc CE2.0 E-CORD M-CORD XOS + Openstack + OVX + ONOS Leaf-Spine disaggregated switches Manages the cluster's switching fabric Manages virtual resources (VMs, VNs) on a cluster of commodity servers XGS-PON And 4G/5G Access, Edge and Core cloud with servers OLT A Network Hypervisor that supports Topology, Address Space, and Control Isolation ROADM

  10. Ethernet Services Legacy services • Key SDN Characteristics Residential services PTN Wireless services CEN o SDH GPON 4G/5G OTN DWDM Fiber

  11. Client#1 Controller Client#2 Controller • Multi-vendor multi-layer SDN implementation Client Network Operator Business Application(s) CVNI=OpenFlow NB-API, REST API Optical Multi-layer Global SDN controller CVNI=OpenFlow, REST IP/MPLS Domain controller Core WDM Domain controller Metro WDM Domain controller CDPI CDPI = NETCONF CDPI

  12. ONOS: Truly Open SDN Controller

  13. SDN Provides Network Slices with Defined KPIs

  14. A network slice : • spans across multiple parts of the network infrastructure (e.g., terminal, access network, core network and transport network) • can be deployed across multiple operators. • comprises dedicated and/or shared resources, e.g. in terms of processing power, storage, and bandwidth and has isolation from the other network slices. • OTTs use the “Net-Neutral Internet” Slice? IoT (mMTC) Slice Broadband (eMBB) Slice Low latency (uRLLC) Slice Net-neutral Slice Infrastructure Layer

  15. TSPs Vs OTTs: A Battle for the Customer Wallet Integrated Network and Application Slices API based slices for third party apps Slices to compete against OTTs on quality Bypass net neutrality and charge more

  16. Telcos: de’FANG’ your Network through Slicing! Industry vertical TSPs

  17. kumar@tejasnetworks.com +91-80-4179-4600

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