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3G NETWORK EVOLUTION
3G NETWORK EVOLUTION
NETWORK EVOLUTION
Evolution Overview Roadmap Evolution Strategy WCDMA Access and
Interfaces Cell Planning
AGENDA
3G NETWORK EVOLUTION
GPRS EDGEHSCSD
UMTS
NETWORK EVOLUTION OVERVIEW
HO IP
3G NETWORK EVOLUTION
ROADMAP - EDGE & UMTS
2001 2002 2003 2004
GPRS (system)
UMTS (system)
EDGE (hardware)
GPRS terminal
UMTS (early systems)
UMTS / GPRS terminal
UMTS / EDGE / GPRS terminal
EDGE (software)
3G NETWORK EVOLUTION
SERVICE EVOLUTION IN ALIGNMENT WITH UMTS
R8
R9 R10
R11
3G NETWORK EVOLUTION
EVOLUTIUON STRATEGIES
Target operator ChoiceScenario
GPRS + EDGE + UMTSFull migration due
to capacity demand
GPRS + EDGEMigration within existing spectrum
GPRS + UMTSEvolution with new spectrum
Customer feedback: “EDGE must be no effort”
3G NETWORK EVOLUTION
WCDMA
PACKET AND CIRCUIT SWITCHED SERVICES CAN BE FREELY MIXED, WITH VARIABLE BANDWIDTHS, AND DELIVERED SIMULTANEOUSLY TO THE SAME USER, WITH SPECIFIC QUALITY LEVELS
3G NETWORK EVOLUTION
WCDMA – FREQUENCY SPECTRUM
UPLINK: 1920-1980 MHz
DUPLEX DISTANCE: 190 MHz
DOWNLINK: 2110-2170 MHz
THE CARRIER FREQUENCY WIDTH IS 5 MHz
3G NETWORK EVOLUTION
EDGE & WCDMA - Complementary 3G Technologies
900/1800/1900 MHzRadio
EDGE
2 GHzRadio
WCDMA
CORE NETWORK
APPLICATION SERVERS
CONTROL,CONNECTIVITY LAYERS
APPLICATION LAYER
3G NETWORK EVOLUTION
ACCESS AND INTERFACES
3G NETWORK EVOLUTION
ACCESS AND INTERFACES
3G NETWORK EVOLUTION
ACCESS AND INTERFACES
3G NETWORK EVOLUTION
UTRAN
Manage Radio Access Bearers for user data transport, manage and optimise the radio network resources and control mobility while the BTS provides the actual radio resources and maintains the radio links
UTRAN contains both the radio parts and the Access Network inclusive the nodes
3G NETWORK EVOLUTION
CELL PLANNING
Performance Analysis
Modelling
PlanningOptimisation
Integration
PLANNING PROCESS
3G NETWORK EVOLUTION
CELL PLANNING
In comparison to a traditional TDMA system the coverage of WCDMA depends on the traffic load in the cells. In a system where the load changes this will cause the cells to grow and shrink with time.
Q
ual
ity
Load
3G NETWORK EVOLUTION
CELL PLANNING
Capacity: It is well known that there is a trade off between coverage and capacity in a CDMA system.The cluster size is nearly determined by the average level of the interference
3G NETWORK EVOLUTION
CELL PLANNING
Power is the shared resource which yields high service flexibilityFor a single user, multiple services with different variability can be mixed easily on one terminal
Bitrate
Service 1PowerLevel
CA
Service 2Bitrate
Coverage, Capacity and Service Flexibility
3G NETWORK EVOLUTION
CELL PLANNINGCoverage, Capacity and Service FlexibilityExample of power levels when different services from different terminals are combined
Power levels from MS
CA
CB
CC
CD
Received power levels at the base station
3G NETWORK EVOLUTION
CELL PLANNING
WCDMA PLANNERS
-DESIGN
-PERFORMANCE
-DOWNLINK DRIVE TEST
PLANNING TOOLS
3G NETWORK EVOLUTION
COMBINED POWER OF EDGE AND WCDMA
Edge
UMTS
Edge
UMTS
2002 2003
Reuse Installed base stations
Launch day one Minimized Risk Fast Return on
investment
