CSP s View on 5G Mobile Network Ming Tsai, Ph.D. E-mail: mingtsai@cht.com.tw Ling-Chih Kao, Ph.D. E-mail: lckao@cht.com.tw Telecommunication Laboratories Chunghwa Telecom Co., Ltd. 1/20
Outline I II Deficiencies of Current Mobile Network Solutions Toward 5G Mobile Network III Migration and Opportunities THE PLATFORM of 5G Mobile Network IV Concluding Remarks 2/20
Mobile Market in Taiwan Mobile Subscribers (Millions) 2017/2 12.00 10.00 8.00 6.00 4.00 2.00 0.00 CHT TWM FET GT 4G 6.979 4.596 4.657 1.666 0.918 CDMA2000 0.036 WCDMA 3.549 2.757 2.618 0.763 GSM900/1800 0.233 0.062 0.03 T STAR 4G Penetration (Penetration) (Million) 0.01% 0.003 15% 3.45 CHT 4G Throughput 50% 11.57 79% 18.07 2014/5 2014/12 2015/12 2016/12 4G Data Volume 337.5 400.00 2016/6 \ (Mbps) 187.5 LWA 3CA 112.5 2CA 2014/5 2015/3 2016/3 2017/2 Source: NCC 3/20
Chunghwa Telecom Overview Strong Market Position Domestic Fixed #1 Local 93.5% share by subs (10.96mn subs) 85.1% share by minutes #1 DLD 83.0% share by minutes #1 Broadband access 74.4% share by subs (b)(c) (4.48 mn subs) Mobile #1 Mobile subscribers 37.3% market share (d) (10.80mn subs) #1 Mobile revenue 36.9% market share (d)(e) #1 ISP 68.5% share by subs (4.18 mn subs) International Fixed #1 ILD 56.2% share by minutes Source: Company data, MOTC, and NCC statistics Market share as of Nov. 2016 CHT access circuits were not included Excluding PWLAN subscriber numbers Includes 2G, 3G and 4G Revenues are based on T-IFRSs. Mobile Subs. Market Share Others 11.5% FET 37.3% 25.4% CHT 25.8% TWM 6.23 million 4G subscribers Jan. 2017 LWA boost data rate to 400 Mbps 4/20
Driving Force of Mobile Network Evolution Requirements User- Centric Data Rate Enhancement IoT Evolution Cycle Shortened Cost Down/ Enhance Revenue Challenges Mobile Network Equipment Transport/ Transmission Network Mobile Core IMS Mobile Core PCRF How to Construct Intelligent Control New Service Creation IP Transport Network (Backhaul, Backbone) Expected Results High Efficiency High Flexibility Easy Maintenance Easy Evolution Easy Scalability Low Cost Meet Customer s Requirement 5/20
Constraints of Current 4G Network 4 OSS is only for provision and maintenance MME 1 2 BW is configured in advance UE Backbone S/P-GW PCRF 5 All requirements can not be fulfilled efficiently by PCRF, especially for location-based services RAN is not applied to all kinds of services enb 4G Access Network S1-MME S1-U Backhaul 3 MME S/P-GW 4G Mobile Core Network SGi Vendor lock-in proprietary hardware FW DPI Media Optimizer Cache Mobile Service Network 6 Service nodes are not controllable 6/20
Outline I II III IV Deficiencies of Current Mobile Network Solutions Toward 5G Mobile Network Concluding Remarks THE PLATFORM Migration and Opportunities of 5G Mobile Network 7/20
RAN Evolution VR 3D/UDH Video ebus Cargo Reservoir monitor industry automation For vehicle embb Massive MTC URLLC Healthcare LTE 5G 3GPP R12~R14 3GPP NR Up to 32 CA LAA/LWA FD-MIMO Cat. 0 Cat. M1 NB-IoT V2V / V2X Shorten TTI Reduced Processing Time New Waveform mm-wave Massive MIMO?? LTE continue to evolve and coexist with NR Currently, 3GPP development for NR and focuses on embb. Operators are more interested in mmtc & URLLC for new services embb:enhanced Mobile BroadBand URLLC:Ultra-reliable Low Latency Communication 8/20
NFV/SDN-based Mobile Core/Backhaul/Backbone Service Orchestrator Mobile Core VNF NFVI MME S/P-GW HSSPCRF/OCS Hypervisor VoLTE EMS NFVOrchestrator VNF Manager VIM X86 Server SDN Orchestrator Mobile Backhaul/Backbone SDN-like PTN/MPLS Switch (Support OpenFlow-like) OTN/OXC/WDM (Support OpenFlow-like) Service orchestrator NFV orchestrator SDN orchestrator need cooperate thoroughly IOT among various VNFs Resources and allocated BW for mobile backhaul/backbone automatically adjusted 9/20
E2E Network Management Architecture -Developed by CHT 10/20
3GPP Solution for SGi-LAN PCRF SDN UE MME FW DPI Media Optimizer Cache enb 4G Radio Access Network S/P-GW 4G Core Network SGi OpenFlow Switch SGi-LAN Mobile Service Network Traversed service nodes controlled by PCRF and SDN controller Trigger information from MME to S/P-GW and PCRF 11/20
UE Intelligent Control Support SGi-LAN/PCRF Services more Flexibly and Efficiently-Developed by CHT Business customers need restricting some services (ftp 1 kbps) when they use data card in company region 2 3 Mobile Data Analysis Module Information Analysis equipment for User-centric requirements, location, QoE and network conditions 4 4G Network 1 12 7 OCS 11 SGi 10 5 PCRF SDN Switch Service Route Decision App 6 9 SDN FW Resource Control App DPI 8 Media Optimizer Cache VM VM VM VM Mobile Service Network Service nodes/qos/action flexibly and SGi-LAN intelligently supported Trigger conditions: subscriber, time, location, service used, terminal adopted 12/20
Intelligent Control with P-GW Tagging Technology -Developed by CHT UE Information Analysis equipment for User-centric requirements, location, QoE and network conditions Service Rote Decision App request P-GW to tag VLAN ID SDN Switch perform action based on VLAN ID, saving usage of flow table HSS MME S-GW Service Route Decision App P-GW vlan ID Orchestrator VNFM SDN Resource Control App FW DPI Media Optimizer Cache VIM+NFVI SGi VM VM VM VM X86 Server SDN Siwtch Mobile Service Network vepc 13/20
Outline I II III IV Deficiencies of Current Mobile Network Solutions Toward 5G Mobile Network Migration and Opportunities of 5G Mobile Network Concluding Remarks 14/20
Stages of Network Migrating 15/20
Vision for Future NFV/SDN-based Mobile Network VNF (User Plane) User Plane Function VNF Mobility Authentication (Control Control Function Plane) Function Edge Cloud Facility SM Subscriber Control database Function Hypervisor High Performance X86 Server MEC Ordianry Performance VNF Manager VIM VNF (User Plane) User Plane Function Big Data Analysis VNF Mobility Authentication (Control Control Function Plane) Function High Performance SM Subscriber Policy Application Control database Function Function Function Hypervisor Ordianry Performance X86 Server Third Party, OTT,... Open API SDN Orchestrator E2E Service Orchestrator NFV Orchestrator VNF Manager VIM End-to-End Network Slicing On-demand service Controllable mobile service network NFV/SDN-based Service Decision Control App Service Decision SDN NFV-based Mobile Radio Access Network FW DPI Media Optimizer Cache LTE-U/LAA Multi-band CA 3GPP IOT V2X 5G RAT LWA Massive MIMO Small Cell / UDN vran SDN-like PTN/MPLS Switch/SDN Switch SDN-based Mobile Backhaul OTN/OXC/WDM SDN-like SDN-based Mobile Backbone Packet processing/service (User Plane) SDN-based Equipment NFV-based Mobile Service Network 16/20
Network Slicing Meet Diverse Requirements Core Cloud Third Party, OTT,... Edge Cloud Big Data Analysis Open API Service Orchestrator VNF S-GW(C/UP) P-GW(C/UP) MME HSS OCS/ PCRF NFVOrchestrator VNF S-GW(UP) P-GW(UP) MEC Hypervisor VNF Manager VIM High Performance Ordianry Performance X86 Server SDN Orchestrator LTE-U/LAA Multi-band CA 3GPP IOT V2X 5G RAT LWA Massive MIMO Small Cell / UDN vran Slice 1 Slice 2 SDN-like PTN/MPLS Switch/SDN Switch SDN-based Mobile Backhaul OTN/OXC/WDM SDN-like SDN-based Mobile Backbone Packet processing/service (User Plane) SDN-based Equipment Distribute traffic into suitable path and adjust resource automatically On-demand services achieved via service orchestrator 17/20
MEC and Edge Cloud Enhance User Experience Core Cloud Third Party, OTT,... Edge Cloud Edge Cloud Big Data Analysis Open API Service Orchestrator VNF S-GW(UP) P-GW(UP) AP Server VNF S-GW(UP) P-GW(UP) AP Server VNF S-GW(C/UP) P-GW(C/UP) MME HSS Hypervisor OCS/ PCRF NFVOrchestrator VNF Manager VIM MEC Server High Performance Ordianry Performance X86 Server SDN Orchestrator MEC Server Old Path SDN-like SDN-like Packet processing/service (User Plane) PTN/MPLS Switch/SDN Switch OTN/OXC/WDM SDN-based Equipment New Path SDN-based Mobile Backhaul SDN-based Mobile Backbone AR/VR/eMBB efficiently satisfied by MEC and edge cloud Inter-edge cloud mobility need supporting 18/20
Outline I II III IV Deficiencies of Current Mobile Network Solutions Toward 5G Mobile Network Concluding Remarks THE PLATFORM Migration and Opportunities of 5G Mobile Network 19/20
Concluding Remarks SDN/NFV/MEC/Cloud play a crucial role for 5G mobile network and an enabler for novel services Network slicing, on-demand services, intelligent control (CHT developed), In the process of evolution, some issues need clarifying Avoid real vendor lock-in, comprehensive E2E service orchestrator/open API/big data analysis (CHT developed), starting occasion, migration plan, leverage among requirements, investments and benefits, Technologies are constantly revoluting; however, there still lack killer applications for operators 20/20
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