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September 8, 2004 2004 CDMA Americas Congress 1 The Changing Landscape of Optimization in CDMA Networks Wayne Newitts Sr. Marketing Manager Tektronix, Inc.
September 8, 2004 2004 CDMA Americas Congress1
The Changing Landscape of Optimization in CDMA Networks
Wayne Newitts
Sr. Marketing Manager
Tektronix, Inc.
September 8, 2004 2004 CDMA Americas Congress2
Topics
Network trends
Optimization challenges– Network– RF
Test & monitoring methods
September 8, 2004 2004 CDMA Americas Congress3
Network trends
Circuits to packets
Software defined networks
Network flattening and the intelligent edge
Mobility and megabits
The top secret “Killer App” revealed
September 8, 2004 2004 CDMA Americas Congress4
Network trendsCircuits to packets
September 8, 2004 2004 CDMA Americas Congress5
Network trendsSoftware defined networks
212-555-1234800-555-4321
September 8, 2004 2004 CDMA Americas Congress6
Network trendsNetwork flattening and the intelligent edge
IP
Core
September 8, 2004 2004 CDMA Americas Congress7
WiMax?
3G
Wi-Fi
Walk
LAN
Out
door
Indo
or
Mob
ility
Mbps0.1 1 10 100
PAN
2G
Fixed
Walk
Fixed
Drive
Network trendsMobility and megabits
September 8, 2004 2004 CDMA Americas Congress8
Network trendsThe top secret “killer app” revealed
Messaging
Internet
Intranet
Finance
E-Commerce
Entertainment
Source: http://www.the-arc-group.com/
September 8, 2004 2004 CDMA Americas Congress9
Network trendsThe top secret “killer app” revealed
Messaging
Internet
Intranet
Finance
E-Commerce
Entertainment
Source: http://www.the-arc-group.com/
Growth in Mobile Data Services 2000 - 2004
September 8, 2004 2004 CDMA Americas Congress10
Network trendsSummary
We may use packets, but customers expect connections
The core remains smart but becomes homogonous and transport is separated from services and applications
Intelligence, differentiation, and interoperation characterize the network edge
No single access technology is likely to dominate in the near future
Seamless mobility is the umbrella application driving growth in telecommunication
September 8, 2004 2004 CDMA Americas Congress11
Optimization challenges - network
I miss BERT
Problems up the stack
Living on the edge
Interoperability
September 8, 2004 2004 CDMA Americas Congress12
Optimization challenges - networkI miss BERT
September 8, 2004 2004 CDMA Americas Congress13
Optimization challenges - network
Problems up the stack
Physical
Datalink
Network
Application
Presentation
Session
Transport
September 8, 2004 2004 CDMA Americas Congress14
IP
Core
Optimization challenges - network
Living on the edge
September 8, 2004 2004 CDMA Americas Congress15
Optimization challenges - network Interoperability
HAPDSN
InternetInternet
BSC
your network…
…their network
September 8, 2004 2004 CDMA Americas Congress16
Optimization challenges - RF
Interference
The power of the code
Quality, not just connectivity
September 8, 2004 2004 CDMA Americas Congress17
100
100 1935.0000Pilot
Paging
Sync
Traffic
Noise Floor
Optimization challenges – RFThe power of the code
September 8, 2004 2004 CDMA Americas Congress18
Optimization challenges – RFThe power of the code
September 8, 2004 2004 CDMA Americas Congress19
Optimization challenges – RFThe power of the code
PilotSync
Paging
Traffic
Margin
Tran
smit
Pow
er
Time
September 8, 2004 2004 CDMA Americas Congress20
Optimization challenges – RFQuality, not just connectivity
Pilot
SyncPaging
Traffic
Margin
Tran
smit
Pow
er
Time
16 QAM40962457.6
16 QAM40961228.8
8 PSK30721843.2
8 PSK3072921.6
QPSK20481228.8
QPSK2048614.4
QPSK2048307.2
QPSK1024614.4
QPSK1024307.2
QPSK1024153.6
QPSK102576.8
QPSK102438.4
Modulation Type
Packet SizeData Rate kbpsTraf
fic
Traf
fic
MA
C
MA
C
Pilo
t
CDMA 1xEV-DO
1xEV-DO
September 8, 2004 2004 CDMA Americas Congress21
CN Tower
2,911 licensedstations in 7km radius
“If you don’t think you have interference problems, that’s because you have not looked.”
-CEO of a major operator
Optimization challenges – RFInterference
September 8, 2004 2004 CDMA Americas Congress22
In a packet environment, lower layer network performance is coupled to higher layer software configuration
Optimizing and troubleshooting next generation networks requires significant understanding of traditional data networking issues
If you are not looking at the network edge, you are missing much
Interoperability is less an issue between access technologies asit is between networks and between elements within your own network
CDMA decoding, usage monitoring, and interference analysis are the keys to RF-side optimization
Optimization challenges Summary
September 8, 2004 2004 CDMA Americas Congress23
Status quo
Emerging solutions
The big picture
Test & monitoring methods
September 8, 2004 2004 CDMA Americas Congress24
Different, mostly uncorrelated solutions for:
System monitoring and element/link monitoring
Centralized vs. field test & monitoring
Network vs. RF test
Test & monitoring methodsStatus quo
September 8, 2004 2004 CDMA Americas Congress25
Test & monitoring methodsEmerging solutions
In the network:– multi-protocol correlation– expert system analysis
For the air interface: – Multi-mode analysis– Interference ID
HAPDSN
InternetInternet
BSC
Power & Portability
September 8, 2004 2004 CDMA Americas Congress26
protocolanalysis
OSS
fieldmeasurements
data
networkelements
time
Test & monitoring methodsThe big picture
September 8, 2004 2004 CDMA Americas Congress27
Thank You!
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