July 14th, 2017 Part II: - What are my main use cases? Security Level: - What IETF work is in progress? Main Use Cases and Gap Analysis for Network Slicing draft-netslices-usecases-01 draft-qiang-netslices-gap-analysis-01 www.huawei.com HUAWEI TECHNOLOGIES CO., LTD. Cristina QIANG
Identified Network Slice Use Cases Network Slice as a Service (NSaaS) 3GPP as a use case Network Customization Resource Assurance New Technology Virtual Customer Premise Enhanced Mobile Broadband (eMBB) Information Centric Equipment (vCPE) Network (ICN) Ultra-Reliable and Low-Latency etc. Communication (URLLC) etc. Massive Machine Type Communication (mMTC) Mission Critical Service (MCS) HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential 2 Flexibility Soft Resource Requirement Hard Resource Requirement Flexibility Soft Resource Requirement Hard Resource Requirement (network functions placement) (status monitoring for performance guarantee) (infrastructure sharing) (network functions placement) (status monitoring for performance guarantee) (infrastructure sharing)
Network Customization Type Use Case - Virt ual Customer Premise Equipment (vCPE) |-----------------------| | +------+ |------------------+-------+ campus | |--| | | | vCPEx | -----[ ] | | | | |------------------+-------+ | | | | | <====Broadband ==> | ----- | | vCPE | | -----------------+-------+ branch | ( ) |->| | | | vCPEy |------[ ] | ( CSP )| | | |------------------+-------+ | (_____) | | | |<=== MPLS/4G. ==> | | | | |------------------+-------+ main site | |->| | | | vCPEz |----- [ ] | +------+ |------------------+-------+ |-----------------------| Traditional vCPE vCPE in a Slice An autonomous OAM of a slice can make existing customizations better isolated, traffic-engineered HUAWEI TECHNOLOGIES CO., LTD. An autonomous OAM of a slice can make existing customizations better isolated, traffic-engineered Huawei Confjdential 3 and flexible and flexible
Resource Assurance Type Use Case - Missio n Critical Services (MCS) Resource Mission Critical E2E Coordinator reservation organization criteria | +---------+--------+ | | ^ | | |-----------+-------------+--------+ | | | Resource request | | prioritized resource adjustment MC Network|Slice v dynamic group management +------------+------------+-------------+ Subscriber management | +----------+-------+ +-----------+ | functions | | Group Subs Mgmt |<-->| MC slice | | | | | | Customizer| | – Admission control | +---------+--------+ +-----------+ | – Fast Authentication | | | | +-+ | | | +---------+ + +-->| | – Group Management | +--------+ +-------+ | GRP | | +-+ MC-UE | | GC-1 | | GC-2 | | selector| | +-+ | | subnet | | subnet| +---------+ | --->| | | +--------+ +-------+ | +-+ MC-UE | | | | +----+----------+---------+-------+-----+ | | | | Transport V V V V ------------NS transport ---------------- – Dedicated connectivity and | | | high-availability Infrastructure Infrastructure Mission Critical – 0 packet loss transmission Domain A Domain B Server Domain C Dedicated physical medium/transport but flexible control of subscriber management done by tenant — HUAWEI TECHNOLOGIES CO., LTD. Dedicated physical medium/transport but flexible control of subscriber management done by tenant — Huawei Confjdential 4 enhanced reliability & security & flexibility enhanced reliability & security & flexibility
New Technology Type Use Case - Information Centric Network (ICN) ICN is a non-IP paradigm based on name-based routing ICN based services can be offered as a network slice in parallel with traditional IP based services Proper resource isolation between ICN and IP based slices “Realizing ICN as a Network Slice for Mobile Data Distribution”, HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential IETF 98 Network Slicing Side Meeting 5
Elicited 4 KEY Requirements ⑤ OAM Status monitoring, resource tracking, etc. Tenants ① Expose network resources ② Describe slicing requirement A network slice with at most 10 ms one-way E2E latency ④ Isolated and performance guarantee Access Network Transport Network Transport Network Core Network (AN) Domain I (TN I) Domain II (TN II) (CN) ③ Coordinate to construct the network Slice AN 2ms ; TNI 2ms ; TNII 4ms ; CN 2ms Req1: Slicing Resource & Requirement Description Req2: Cross-Domain Coordination HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential 6 Req3: Performance Guarantee and Isolation Req4: Network Slicing OAM
Req1: Slicing Resource & Requirement D escription performance metrics tenants protection requirements isolation constraints path restriction (e.g., must pass through some network slicing domain controller points for security) high-availability guidelines (e.g., URLLC service restoration within 10ms, 100ms, or 1 network resources/functions second) etc. Related Work in IETF YANG Data Models Connectivity Provisioning Traffic Engineering Architecture Profile (CPP) Template and Signaling (TEAS) base & TEAS L2SM, L3SM, EVPN, etc. (Traffic) objectives of Abstract topologies with traffic technology-specific engineering constraints traffic engineering functions and service Templates for links or resources management functions Conclusion: 1) Lack of resource abstraction and management on Layer 3+ (e.g., routing table) Conclusion: 1) Lack of resource abstraction and management on Layer 3+ (e.g., routing table) HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential 7 2) Specification of advanced service functions to be invoked and their invocation order 2) Specification of advanced service functions to be invoked and their invocation order
Req2: Cross-Domain Coordination network slice resource coordination (e.g., 10ms A common platform for different latency E2E slice 2ms in RAN + 4ms in TN1+ providers/administrators ? 2ms in TN2 + 2ms in CN) network slicing network slicing configuration information coordination (e.g. domain controller domain controller VLAN ID, remote IP address, physical port ID) other coordination (e.g., notify TN about the network network resources/functions resources/functions location of attachment point) Related Work in IETF Abstraction and Control A Generic Autonomic Signaling connectivity provision of TE Networks (ACTN) Protocol (GRASP) negotiation protocol (CPNP) Multi-domain coordination Autonomic negotiation protocol Dynamic negotiation protocol in Traffic Engineering in underlying infrastructure for connectivity provisioning (TE) network through a layer (and other service-specific) (hierarchical) Multi- parameters between customer Domain Service and provider Coordinator (MDSC) Conclusion: 1) A flat cross-domain coordination solution Conclusion: 1) A flat cross-domain coordination solution HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential 8 2) Extension on NS specific behaviors and objects 2) Extension on NS specific behaviors and objects
Req3: Performance Guarantee and I solation performance isolation network network resources/functions resources/functions secure isolation network slice I management isolation network slice II Related Work in IETF Network Resource Reservation Segment Flexible Deterministic Virtual Virtualizati Protocol-Traffic Ethernet Networking ( DetNet) Routing (SR) Private on Overlays (FlexE) Engineering (RSVP-TE) Network (VPN) Deterministic data (NVO3) SR-based Complete paths with extremely LSPs provide decoupling of Signal protocol to Logically low packet loss Layer 2/3 TE features MAC layer and establish E2E TE LSP separated service for rates, low delay with bandwidth physical layer routing/bridgi virtual variation and reservation ng regions assured maximum E2E networks enabling delivery latency over Layer 2 and multi- tenancy Layer 3 Conclusion: 1) Tighter coupling between underlay and overlay Conclusion: 1) Tighter coupling between underlay and overlay HUAWEI TECHNOLOGIES CO., LTD. Huawei Confjdential 9 2) Enhancement to data plane and control plane 2) Enhancement to data plane and control plane
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