OBSERVER PATTERN OBSERVER PATTERN Presented By Presented By Ajeet Tripathi ISE2007015.
May 25, 2004 Final Presentation Communication Systems Design 2004 Ajeet Kumar Nankani Joakim...
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May 25, 2004 Final Presentation Communication Systems Design 2004 Ajeet Kumar Nankani Joakim Andersson Ning Zhou Rajkrishna Srinivasan Workshet Lamenew
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Transcript of May 25, 2004 Final Presentation Communication Systems Design 2004 Ajeet Kumar Nankani Joakim...
May 25, 2004
Final PresentationCommunication Systems Design 2004
Ajeet Kumar NankaniJoakim Andersson
Ning ZhouRajkrishna SrinivasanWorkshet Lamenew
May 25, 2004
Final PresentationCommunication Systems Design 2004
Attractive Feature
Advanced GSM GPRS test bed ready for academic and research community
May 25, 2004
Final PresentationCommunication Systems Design 2004
Agenda
• Introduction• Video Presentation• GPRS Implementation• E1 over IP Solution• VoIP-SIP Integration• Conclusion• Future Work• Q & A
May 25, 2004
Final PresentationCommunication Systems Design 2004
Introduction
• GSM GPRS test bed• KPG2 project initiation• Project goals• Efforts to meet the goals• Supporters (Ericsson, Axerra, Swefour, ...)
May 25, 2004
Final PresentationCommunication Systems Design 2004
System Architecture
E1
BTS
E1BSC MSC
GSM/GPRS Core Network
HLR
VLR
CGSN
FW/NAT
VoIP/SIP
Gateway
IP Network
May 25, 2004
Final PresentationCommunication Systems Design 2004
THE VIDEO
May 25, 2004
Final PresentationCommunication Systems Design 2004
GPRS Implementation
- Joakim Andersson
May 25, 2004
Final PresentationCommunication Systems Design 2004
Changes to the GSM network
May 25, 2004
Final PresentationCommunication Systems Design 2004
Hardware of the CGSN25
May 25, 2004
Final PresentationCommunication Systems Design 2004
Interfaces of the CGSN
May 25, 2004
Final PresentationCommunication Systems Design 2004
GPRS Implementation
• Access Point Name (APN)
• Packet Data Protocol (PDP)
May 25, 2004
Final PresentationCommunication Systems Design 2004
Access Point Name
• IP address for APN resolving
• IP address for mobile station
• Routing method
May 25, 2004
Final PresentationCommunication Systems Design 2004
Packet Data Protocol
• PDP Context Activation
• In MS, SGSN, GGSN
• APN
• Requested IP address
• Requested Quality of Service
May 25, 2004
Final PresentationCommunication Systems Design 2004
GPRS Benefits
• Controlled environment
• Hands on experience
May 25, 2004
Final PresentationCommunication Systems Design 2004
E1 over IP Solution
- Ning Zhou
May 25, 2004
Final PresentationCommunication Systems Design 2004
E1 Line
E1
BTS
E1BSC MSC
GSM/GPRS Core Network
HLR
VLR
CGSN
FW/NAT
VoIP/SIP
Gateway
IP Network
May 25, 2004
Final PresentationCommunication Systems Design 2004
E1
BTS
E1BSC MSC
GSM/GPRS Core Network
HLR
VLR
CGSN
FW/NAT
VoIP/SIP
Gateway
IP Network
E1 over IP
May 25, 2004
Final PresentationCommunication Systems Design 2004
E1 over IP
• Solution– Optical Fiber– Re-configure AXN Boxes
•32 timeslots, 2*2.048Mbps•16 timeslots
May 25, 2004
Final PresentationCommunication Systems Design 2004
Coverage Extension
• Forum building
• Kista IP student accommodation
• Electrum building
• Part of Kista Galleria
May 25, 2004
Final PresentationCommunication Systems Design 2004
VoIP – SIPIntegration with MSC
- Ajeet Nankani
May 25, 2004
Final PresentationCommunication Systems Design 2004
VoIP - SIP
• Why VoIP – SIP Integration?
• Increases calling options
• Increases reachability
• SIP Environment– SIP clients– SIP servers– SIP gateway
May 25, 2004
Final PresentationCommunication Systems Design 2004
VoIP-SIP Architecture
E1
BTS
E1BSC MSC
GSM/GPRS Core Network
HLR
VLR
CGSN
FW/NAT
VoIP/SIP
Gateway
SIP Client
SIP Proxy ServerSIP Redirect ServerSIP Registrar Server
IP Network
May 25, 2004
Final PresentationCommunication Systems Design 2004
SIP - Gateway
• Cooperation with Team13
• SIP gateway – AXD 320
May 25, 2004
Final PresentationCommunication Systems Design 2004
Conclusion
- Rajkrishna Srinivasan
May 25, 2004
Final PresentationCommunication Systems Design 2004
E1
BTS
E1BSC MSC
GSM/GPRS Core Network
HLR
VLR
CGSN
FW/NAT
VoIP/SIP
Gateway
IP Network
AXD 320
VOIP Status• AXD320 MSC Integration
May 25, 2004
Final PresentationCommunication Systems Design 2004
Conclusion
• Successful GSM/GPRS over IP
• Current Status of GSM/GPRS
May 25, 2004
Final PresentationCommunication Systems Design 2004
Future Work
• Extensive testing
• Extending coverage
• Security aspects
• KTH phone system
• Innovative ideas !!!
May 25, 2004
Final PresentationCommunication Systems Design 2004
Questions and Comments
• Website
http://csd.ssvl.kth.se/~csd2004-team16
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