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Maximize the Value of CDMA Networks and Smoothly Evolve to the Next GenerationMaximize the Value of CDMA Networks and Smoothly Evolve to the Next Generation
Sean CaiVP Wireless, ZTE Corporation
Sean CaiVP Wireless, ZTE Corporation
CDG Technology Forum 2011
Technology Evolution
Table of Contents
Maximizing Values of CDMA
Smooth Migration to LTE
33
2G3G
UMTS, CDMA, TD-SCDMA
4G
GSM, IS-95
Mobile Technology Evolution Mobile Technology Evolution
Mobile Market TrendsMobile Market Trends
Source: CDG
55
Different CharacteristicsDifferent Characteristics
Basic ServicesGuaranteed communication connections at anytime and anywhere.
Value Added ServicesRequiring high throughput and low latency communication connections covered in relative small areas or hot spots.
66
High Traffic Increase vs.. Slow Revenue GrowthHigh Traffic Increase vs.. Slow Revenue Growth
Source: 3rd party
Global Mobile Revenue (million USD)Mobile Data Traffic and Revenue
Source: 3rd party
77
Concurrent Voice & Data ServicesConcurrent Voice & Data Services
Voice and Data Concurrent ServicesCDMA 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 CallsData service not only increases the data traffic, but also occupies a lot of bandwidth on signaling channel, which causes high call drop rate.
88
Dual Network ArchitectureDual Network Architecture
8 8
GSM/UMTS/LTE
xGSN
BSC/RNC
Servers
EPC
Voice bearer network (IP)
Internet bearer network (IP)
Voice
Broadband Data
No TCO Increases!
99
Independent Migration PathsIndependent Migration Paths
Smooth EvolutionSmooth Evolution
CDMA and LTE
CDMA2000 1X AdvCDMA2000 1X
CDMA2000 HRPD
1010
Different Deployment StrategyDifferent Deployment Strategy
Voice NetworksWide area coverage for voice and low throughput data services
SuburbUrban areaHot spot
To cover high density areas for data servicesInterworking and evolving to single data network
Technology Evolution
Table of Contents
Maximizing Values of CDMA
Smooth Migration to LTE
1212
Voice Quality Voice Quality
1313
Values of CDMA Voice Networks Values of CDMA Voice Networks
Title in hereVoice Quality
Title in here
Network Coverage
System Capacity
CDMA Technology
1414
Voice Capacity Voice Capacity
1515
Radio CoverageRadio Coverage
Without soft handoffWithout soft handoff
Discontinuous power transmission mode
Discontinuous power transmission mode
AMR 12 . 2 kbpsAMR 12 . 2 kbps
Soft handoffSoft handoff
Continuous power transmission mode
Continuous power transmission mode
EVRC‐BEVRC‐B
1X Advanced LTE VoIP
1 ~ 2 db1 ~ 2 db
6 db6 db
2 . 6 db2 . 6 db
RL Budget Difference
10 db10 db
1616
Migration to 1X AdvancedMigration to 1X Advanced
EVRC‐B(4GV)
Mobile Receive Diversity (MRD)
Quasi Linear Iinterference Cancellation (QLIC)
Quasi Orthogonal Function(QOF)
Software Upgrade
Smart Blanking of the 1/8 rate frame
Improved closed loop power control
Early termination of forward and reverse links
Hardware upgrade required
Enhanced FL IC
Reverse Link Interference Cancellation (RLIC)
50% More Capacity Gain
Over 3x Capacity Gain
1717
Benefits to Data ServicesBenefits to Data Services
The same voice capacity on 1x advanced only takes 25%
of the existing spectrum.
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.
CDMA Network MigrationCDMA Network Migration
Technology Evolution
Table of Contents
Maximizing Values of CDMA
Smooth Migration to LTE
1919
Future Network Consideration Future Network Consideration
2020
CDMA2000 1X
Baseband module + software upgrade
CDMA2000 1XCDMA2000 EV‐DO
LTE and CDMA enhancement
SDR BBU Platform
MultiMulti‐‐Radio TechnologiesRadio Technologies
Baseband module + software upgrade
Single PlatformSingle Platform
UNI‐RAN for Multi‐Radio TechnologiesUNI‐RAN for Multi‐Radio Technologies
2121
Single PlatformSingle Platform
RRU
CDMA RRU
700MHz
LTE(5M)
> 100MHz
CDMA
LTE RRU
800MHz 1900MHz
LTE
< 20MHz
CDMA
CDMA + LTE RRU
UNI‐RAN for Multi‐band RadiosUNI‐RAN for Multi‐band Radios
2222
Outdoor InstallationIndoor InstallationPowerTrans
Feeder
RRU BBU
BatteryPower
Transmission
Centralized Installation Centralized Installation
Distributed InstallationDistributed Installation
FeederFiber
C/L Dual‐ModeC/L Dual‐Mode
C/L Dual‐ModeC/L Dual‐Mode
Equipment sharing
Equipment room sharing
Power supply and battery sharing
Tower sharing
Feeder sharing
UNI‐RAN: Much Easier to InstallUNI‐RAN: Much Easier to Install
2323
Core network
Wireless network
UNI‐CORE for Smooth Network MigrationUNI‐CORE for Smooth Network Migration
2424
Core network
Wireless network
UNI‐CORE for Smooth Network MigrationUNI‐CORE for Smooth Network Migration
2525
Combined BSC/RNC
Multi-mode BBU
Multi-modeBaseband Cluster
MSR/MBR/SDR Unified-User ProfileService PlatformUnified-NMS
Unified Gateway
Micro/Pico/Femto
UNI-BEARER
Unified Network PlatformsUnified Network Platforms
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
Summary:
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