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Slide 2Aug-04
A typical SP/Vendor headache…
RoamingAnalysis
Error Tracingalong theNetwork
End-to-endServiceAnalysis
RootCause
Detection
HandoverAnalysis
Slide 3Aug-04
Agenda
Top/down method Real-time Vs. historicalEnd-to-end approachServices assurance Mobile IP/Simple IP analysis
Slide 4Aug-04
MIP/SIP registration WAP protocol VPN Service layer
Access DNS PDSN HLR
BTS_1 BTS_2
VPN_1 VPN_2
Firewall WAPG/W
MMSC Apps AAA SMSC Location
PTT Games News
MMSC_1 MMSC_2
WAPGW_1
WAPGW_2
GIS DB
Top/Down method
Top/Down network visibility
Availability Response Time
Throughput analysis
PCF_1 PCF_2 PCF_3
Availability Delay
Slide 5Aug-04
Real-time Vs. Historical
HistoricalReal-time
Slide 6Aug-04
Historical analysis scenarios
What is the Connect success/failure rate?
Investigate handover problems
Which PCF/PDSN has the highest Connection failure
rate?
What exactly is the problem in the most problematic PCF/PDSN/AAA server?
What is the busy hour/minute?
Throughput analysis
Service/application layer analysis
PPP rejections rate/cause
Slide 7Aug-04
Real-time correlation
Slide 8Aug-04
AT Originates 1xEV-DO Session- Successful Authentication I
AN AAAAT AN PCF PDSN
UATI-Request
UATI-Assignment
UATI-Complete
A12 Access Request
A12 Access Accept
Session Established
AT Ready to ExchangeData on Access Stream
PPP and LCP Negotiation
CHAP Challenge - Response
Cont’
Slide 9Aug-04
AT Originates 1xEV-DO Session- Successful Authentication II
AN AAAAT PCF PDSN
A11- Registration Request(Lifetime, MEI)
A9-Setup–A8
A9-Connect-A8
A11- Registration Reply(Lifetime, accept)
TA8-setupTregreq
AN
Transmitting Packet Data
Establishing PPP Connection
CHAP Authentication Success
AT Ready to ExchangeData on Access Stream
Cont’
Slide 10Aug-04
PPP, GRE, etc.
A11 signaling (Simple IP), Mobile IP
Voice/Video quality, HTTP, FTP Success/Failure, DNS lookout, Throughput, etc.
Multi layer analysis
Application layer
Layer 3
Layer 2
Physical radio parametersLayer 1
Slide 11Aug-04
There is No trafficchannel exists
between the MS andthe BS and no PPP link between the MS and
the PDSN
No physical traffic channel exists betweenthe MS and the BS, but the PPP link between
the MS and thePDSN is maintained
Null active
Packet data service states
Active/Connected
A physical traffic channel exists
Between the MS and the BS,
and either side may send data
Dormant
Slide 12Aug-04
Home Agent
PSDN PSDN
PCF PCF PCF
BSC/AN
BTS BTS BTS BTS BTS BTS BTS
Mobility between PDSNs(Mobility IP)
Mobility between PCFs(A10/A11 Interfaces)
Mobility between BSCs(A8/A9 Interfaces)
Mobility between BTSs(Intra-BS Hard Handoff)
Packet Data Micro/Macro Mobilityconcept – CDMA2000 1x/DO
BSC/ANBSC/ANBSC/AN
Slide 13Aug-04
RF testing
RF Scanning receivers
Real-time analysis
Network testing
Probes
Sessions (CDRs)
Real-time analysis
RF/Network correlation
End-to-end analysis
Test mobile phones
Slide 14Aug-04
RF/Network correlation
Increase efficiency and shorten Identify-Analyze-Fix cycle times
• Analyze your network end-to-end• Validate customer QoS and QoE throughout the whole
network • Correlate/Segment your RF, Radio access, Core signalling
and Core IP network abnormalities
Improve user service by actively/passively analyzing radio parameters which affect service-related KPIs and KQIs.
Slide 15Aug-04
CDMA2000 essential radio parameters
AGCReference PN Ec/IoSIDNIDHandoff Mode (i.e. soft, softer, etc. and 2 way, 3 way, etc)Avg Tx PwrFERRLP retx rate
Slide 16Aug-04
Deployment model
Mobile to MobileMobile to MobileMobile to External network i.e. ISDN, Mobile to External network i.e. ISDN, PSTN, VoIPPSTN, VoIP
ISDNPSTNVoIP
Slide 17Aug-04
Services assurance
Throughput FTPHTTP WAPPOP3SMTPSMSMMSVoice
VideoMOSBlock distortionBlurringEdge businessPacket lossJitterJerkiness and noiseAudio video synch
Slide 18Aug-04
IWFCall ControlMobilityManagement
Switch
A1Signaling
BSC
BTS
BSC
BTS
SDUFunction
SDUFunction
A2User Traffic
A5User traffic
SourceBS
A Reference Point
A3 (user traffic)
A3 (signaling)
A7 (signaling)
A8 (user traffic)
A9 (signaling)
A10 (user traffic)
A11 (signaling)
Target BS
MSC
Ater Reference Point
Aquinter Reference Point
Aquaterr Reference Point
A11/Mobile IP connection
PCF PDSN
•Establishment•Termination•Authentication/Access
LCP, CHAP, PAP, IPCP analysis•Always on services
PPP analysis
•Establishing an A10 connection•Periodic re-registration of an A10 connection•Clearing an A10 connection•Passing accounting related information•Informing the PDSN that all packet data service instances are dormant•Passing fast handoff related information
A11/Mobile IP connection
