Maximize the Value of CDMA Networks and Smoothly Evolve to the Next Generation. Sean Cai VP Wireless, ZTE Corporation
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1 Maximize the Value of CDMA Networks and Smoothly Evolve to the Next Generation Sean Cai VP Wireless, ZTE Corporation CDG Technology Forum 2011
2 Table of Contents Technology Evolution Maximizing Values of CDMA Smooth Migration to LTE
3 Mobile Technology Evolution 4G 2G GSM, IS-95 3G UMTS, CDMA, TD-SCDMA 3
4 Mobile Market Trends Source: CDG
5 Different Characteristics Basic Services Guaranteed communication connections at anytime and anywhere. Value Added Services Requiring high throughput and low latency communication connections covered in relative small areas or hot spots. 5
6 High Traffic Increase vs.. Slow Revenue Growth Mobile Data Traffic and Revenue Global Mobile Revenue (million USD) Source: 3 rd party Source: 3 rd party 6
7 Concurrent Voice & Data Services Voice and Data Concurrent Services CDMA currently does not support voice and data concurrent services. But this is a very important feature for smart phones. Overloaded Data Services Impact on Voice Calls Data service not only increases the data traffic, but also occupies a lot of bandwidth on signaling channel, which causes high call drop rate. 7
8 Dual Network Architecture Voice BSC/RNC xgsn Voice bearer network (IP) Servers Broadband Data GSM/UMTS/LTE No TCO Increases! EPC Internet bearer network (IP) 8 8 8
9 Independent Migration Paths CDMA2000 1X CDMA2000 1X Adv Smooth Evolution CDMA2000 HRPD CDMA and LTE 9
10 Different Deployment Strategy Voice Networks Wide area coverage for voice and low throughput data services To cover high density areas for data services Interworking and evolving to single data network Hot spot Urban area Suburb 10
11 Table of Contents Technology Evolution Maximizing Values of CDMA Smooth Migration to LTE
12 12 Voice Quality
13 Values of CDMA Voice Networks Title in here Voice Quality CDMA Technology System Capacity Title Network in here Coverage 13
14 Voice Capacity 14
15 Radio Coverage 1X Advanced LTE VoIP RL Budget Difference Soft Soft handoff handoff Without Without soft soft handoff handoff 1 1 ~ ~ 2 2 db db Continuous Continuous power power transmission transmission mode mode Discontinuous Discontinuous power power transmission transmission mode mode 6 6 db db 10 db EVRC B EVRC B AMR AMR kbps kbps db db 15
16 Migration to 1X Advanced Enhanced FL IC Over 3x Capacity Gain Hardware upgrade required Reverse Link Interference Cancellation (RLIC) Smart Blanking of the 1/8 rate frame Improved closed loop power control Early termination of forward and reverse links EVRC B(4GV) Software Upgrade Mobile Receive Diversity (MRD) Quasi Linear Iinterference Cancellation (QLIC) 50% More Capacity Gain Quasi Orthogonal Function (QOF) 16
17 Benefits to Data Services The same voice capacity on 1x advanced only takes 25% of the existing spectrum. CDMA Network Migration The same voice capacity on 1X advanced only takes 25% of the existing spectrum. Saved spectrum can be used for DO or LTE to increase data capacity. 17
18 Table of Contents Technology Evolution Maximizing Values of CDMA Smooth Migration to LTE
19 Future Network Consideration 19
20 UNI RAN for Multi Radio Technologies Single Platform SDR BBU Platform Multi Radio Technologies CDMA2000 1X CDMA2000 1X CDMA2000 EV DO LTE and CDMA enhancement Baseband module + software upgrade Baseband module + software upgrade 20
21 UNI RAN for Multi band Radios RRU Single Platform 700MHz 800MHz 1900MHz LTE(5M) CDMA CDMA LTE > 100MHz < 20MHz CDMA RRU LTE RRU CDMA + LTE RRU 21
22 UNI RAN: Much Easier to Install Feeder Power Trans Centralized Installation Indoor Installation Outdoor Installation C/L Dual Mode Distributed Installation Equipment sharing Feeder Fiber C/L Dual Mode BBU RRU Equipment room sharing Power supply and battery sharing Battery Power Transmission Tower sharing Feeder sharing 22
23 UNI CORE for Smooth Network Migration Core network Wireless network 23
24 UNI CORE for Smooth Network Migration Core network Wireless network 24
25 Unified Network Platforms Multi-mode BBU MSR/MBR/SDR Micro/Pico/Femto Multi-mode Baseband Cluster Combined BSC/RNC UNI- BEARER Unified-NMS Unified Gateway Unified-User Profile Service Platform 25
26 Summary: Voice & Data dual network strategy Maximized the values of CDMA Maximized spectrum efficiency of voice for data services Unified Network Platform provides a way to smoothly migrate to LTE
27
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