OTN to CO, Key Implementation of Network Transformation Jeffrey Gao President of Transmission Network Product Line
Business Transformation Drive Network Transformation Online Video Company Cloud Service Company Internet Company Cooperation for better video service The cloud platform is the key to drive network transformation. Reinhard Clemens / T-Systems CEO? 38M+ package with Netflix Jun 2015 Jun 2015 Domain 2.0 May 2014 Acquire FullScreen Oct 2014 BT Sports: the first 4K channel in Europe Launch public cloud services Sep 2013 Acquire Direct TV Oct 2014 IT Transformation Network Transformation Domain 2.0 Network Transformation Centralization Virtualization Cloud Computing Big Data CUBE-Net Network 2020 Page 2
During operator business transformation, How does the transport infrastructure evolve? Page 3
1 4K FBB, 2K MBB, Cloud-based Leased Line as New Services Drive OTN to CO Page 4
Video Emerges as an Operator's Basic Service Europe Korea China 1 Gbit/s 10 Super Cities Digital Britain 24 Mbit/s 90% of users 10 Gbit/s 1 Gbit/s SKT 100% Giga-city (2020) 1 Gbit/s Developed cities 50 Mbit/s Common cities China Broadband (2020) Dec 2014: Launch 4K channels June 2015: the 1 st 4K channel in Europe; Offering 4K BT sports program U + The top 3 carriers launched 4K programs in September 2014. LGU+ 4K subscribers exceeded 120,000 in March 2015. Sichuan Telecom's alloptical network covers towns and cities. UHD 4K programs went online on December 26, 2014. 4K Video: 3 Challenges over Traditional Networks High Traffic 4K streams = 4 x HD streams Popular videos cause traffic increased by 80% Low Convergence Video convergence is reduced from 16:1 to 2:1 One-Hop Reach Content sources are as close as possible to end users for better viewing experience Page 5
4K Videos Extend OTN Deploying to CO Nodes Node-based Convergence Architecture One-hop Architecture CR CR PE BRAS 16:1 2:1 CDN Server ME2 ME1 Access ring with lower convergence ratio exceeds 100G. Ensuring 30% traffic loading cause high network Capex. Service congestion may cause high latency and packet loss rate. BNG CO Content to Home over One-hop Page 6
2K MBB: Frequent Network Expansion Access Convergence Core 3G 20 Mbit/s per site Cell-site spacing =1500m GE Ring Networking New-built 4G 4.5G 200 Mbit/s per site Cell-site spacing =500m 450Mbit/s to 10Gbit/s per site Cell-site spacing <500m 10GE Ring Networking 100GE Ring Networking? Page 7
From Ring to Tree Topology for Smooth Expansion Ring topology is based on bandwidth sharing. All services are forwarded site by site. Therefore, burst services is easy to cause congestion, resulting in high latency and packet loss, that affects user experience. Core layer Aggregation layer Access layer λ1 λ7 1 7 λ2 λ 6 2 6 λ5 λ3 3 5 λ4 4 Tree topology realize that one channel (ODUk/wavelength) dedicated for each aggregation site, that achieve 0 service congestion without any packet loss, offering best user experience Meanwhile, microwave enter the 10G bandwidth era by SDB technology. Page 8
LTE/LTE-A: CPRI Fronthaul Emerges COMP ON in BBU Cloud LTE-A with CA LTE-A with CA X2 latency 0 COMP OFF COMP ON BBU Cloud CA=f1+f2+f3 f1+f2+f3 X2 latency >0? f1+f2+f3 f1+f2+f3 Edge performance: 0% 0-50% 50%-100% CRPI CPRI 5: 4.9 Gbit/s CPRI 7: 9.8 Gbit/s In BBU Cloud, One Site = 3 Carrier x 3 Sector x 1 CPRI Interface rate = 9 x CPRI Rate Install with RRUs Full Outdoor Page 9
FO OTN Serve for CPRI Fronthaul CPRI Xpress - OSN810 1 st Industry full-outdoor OTN device RRU-like, IP65, 20 ~ +55, AC/DC Turbo technology: 20km transmission distance for 100G 2x(10G components achieve 50G) based on the ODSP DMT algorithm All scenarios supported with 15 client interfaces CPRI2~8, STM-1/4/16/64, GE, 10GE, OBSAI 4x/8x with all topology such as P2P, link, star, ring etc. OSN1800V Aggregation node BBU Cloud Without Turbo Power Baseband Spectrum Invalid Spectrum f(hz) OSN1800II with Turbo Power DMT Tech. transfer invalid spectrum to valid spectrum OSN1800II f(hz) Mobile Fronthaul Page 10
Cloud Service Requires Network Transformation Multi-layer NMS Enterprise CPE EAD Metro BNG BRAS Regional 1 Fixed access ONT OLT IP network Ethernet 3 SR EPC IP 3 Optical Subnet 1 Subnet 2 DC DC DC Wireless access RRU BBU Vendor A 2 Optical Vendor B Internal DC Interconnection (For operator) Cloud computing center Public Cloud Leased Line (For LL customer) 1 Network architecture designed for traditional services cannot match the DC-centric traffic feature of cloud services. Front DC & CDN 2 3 Multi-vendor device interconnection and manual cross-subnet connection result in long service TTM. The network is complex to cause long latency. IP network Ethernet Vendor A Vendor B Transport network Page 11
China Telecom: Network Transformation APP APP Third-party APP 3 Open APIs Unified service orchestration/network orchestration system XX network orchestrator XX network controller YY network orchestrator YY network controller 2 Orchestration Traditional OSS Traditional NMS Target: to serve self-operating cloud services and match Internet OTT services 1. Simplified network: No. of NEs reduced by 60% 2. Fast services provisioning: service provisioning within 10 minutes 3. User experience: E2E latency less than 30 ms 1 Cloudization/Virtualization Device IP network IT system one-hop architecture Integrated national and provincial backbones Transport network Service platform VAS BRAS CPE Metro Regional IDC/DC Benefit: 1. Simplified DC-centric network architecture: Regional (Integrated architecture for national and provincial backbones) + Metro (one-hop architecture) improve network flexibility, efficiency, TTM, and reduces latency. 2. SDN/NFV enables a unified and intelligent management platform. Central resource management implements multi-layer network synergy such as multi-vendor IP+Optical or DC+Optical synergy. Page 12
2 SDN-Based SoftCOM as New Technology Drive OTN to CO Page 13
SoftCOM Architecture: OTN to CO RRU RRU RRU Metro Eth Metro Eth Router Router ONT WDM Metro WDM WDM Backbone WDM DSL MxU PON ONT SDN-based SoftCOM defines DC-centric network architecture for operators OTN to CO is a basic infrastructure of SoftCOM Page 14
SKT 5G Network Architecture: Distributed DC + SDN Unified management and control platform SDN/NFV enable real-time E2E service provisioning over multilayer & multi-domain Distributed DC Edge Clouds are deployed at centralized place of 5G BBUs, where OTN are deployed IP + Optical synergy According to 5G service requirements, L2/L3 forwarding path and L0/L1 one-hop path are different Page 15
Huawei s T-SDN Architecture Application layer BoD Automation IP+optical OVPN Third-party app RESTful API Orchestration layer Multi-domain management Application model Policy management Traditional NMS BSS/OSS RESTful/RestConf RESTful/RestConf Super controller NBI EMS/NMS SNC-T controller Path computing Service configuration Restoration Resource management Third-party SDN controller SBI (PCEP) QX IDC Enterprise Enterprise Page 16
3 Simply Network to Reduces TCO TCO Drives OTN to CO Page 17
Network Upgrading & Simplification Traditional Network 1. TDM networks exist for long-term 2. IP/ETH network based service forward node by node Simplified Network Universal platform with less layers RSG CR CR CR CR STM-64 10GE ASG BR BR WDM/OTN Large Bandwidth Lower cost per bit STM-16 STM-4 10GE ASG GE ME2 BRAS BRAS ME2 OTN to CO Simplified Network BNG BNG Better Experience Decrease from 5 to 3 layers Less CAPEX E1/STM-1 CSG FE/GE ME1 ME2 ME2 ME1 CO WDM/OTN CO Simplified O&M Universal platform Less OPEX CSG CSG ME1 ME1 CO CO 2G/3G DSLAM Enterprise 3G/4G DSLAM FTTx DC Enterprise Page 18
SDH Migration: MS-OTN + GNEEC Platform MS-OTN natively support SDH service 4.8T VC4 80G VC12 2.56T VC 80G VC12 280G VC4 40G VC12 40G VC4 20G VC12 Support E1/E3/STM-1/4/16/64 & VC grooming MS-OTN as a universal platform have less footprint and lower power consumption Maintenance Spare Part Footprint Electricity Before 70% OPEX Saving Maintenance Spare Part Footprint Electricity After One-Stop SDH migration platform GNEEC Cloud (Person*day) 25 20 15 Example: 6 nodes ring migration Migration Cost 50% Data Collection and Analysis for existing network Assessment and optimization for target network Network Design Integration & Testing Rollout by MS-OTN 1 2 3 4 5 6 Migration Implementation 10 5 0 Vendor A Installatioin Data Processing Huawei Commisioning Page 19
Summary: 3 Key Factors Driving OTN to CO PSTN Module exchange End exchange Tandem office Toll office New Services New Technology TCO Traditional Network 2G/3G BTS NB BSC RNC MSC Video, Cloud LL SDN/NFV Network Simplification SDH 155M 2.5G 10G 622M Large Bandwidth Fast Provisioning Lower Cost Existing Network 4G/4.5G Fixed broadband enb DSL OLT BNG EPC CR IP Core OTN to CO Network Transformation RRU OLT BBU Local DC Area DC Center DC Access Cloud edge Cloud core Page 20
OTN to CO Are Deployed/Deploying at Global Page 21
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