1. IEEE802.16 Network Simulation with Mobile Users
Department of Communication Systems Engineering
Ben Gurion University of the Negev
Be’er-Sheva, Israel
IEEE Network Simulation with Mobile Users
Part B – MMR Network
Anatoly Rabinovich
Roman Kalik
Supervisors: Dr. Yehuda Ben - Shimol
Mr. Itzik Kitroser

2. Contents Complete network overview. Project Goal & Scope.
Base Station (BS) Design.
Implementation
Transmission
Reception
Modulation
Traffic Simulation.
Results.

3. Complete Network Overview
Simulation Description
Multiple Base Stations.
Multiple Subscriber Stations (SS).
Mobile and Stationary SS.
A modular Air Link.
שקף זה ישמש להצגה של הרשת כולה כאשר נדבר יותר באוריינטציה של תחנת הבסיס.

4. IEEE802.16 Network Simulation With Mobile Users: Base Station – Project Goal & Scope
Studying of the IEEE standard.
Studying of the open source OMNeT++ network simulator.
Implementing the IEEE MAC layer.
Collection and analysis of statistical information.
Multiple Base Station.
Multiple Subscriber Stations (SS).
Support for Static & Mobile SSs.
Roaming.
מטרת הפרוייקט - למדנו את הסטנדרט, את הסימולטור. מימשנו את שכבת ה- MAC, אספנו וניתחנו את הסטטיסטיקות שהתקבלו.
היקף הפרוייקט – מימוש תחנת בסיס יחידה. התממשקות עם הרבה משתמשי קצה. תמיכה במשתמשי קצה סטטים ודינמיים. ניידות משתמשים.

5. Base Station – Design
The CS modules handle entry-level processing, converting packets to and from IP format.
The CPS is the Central Processing System. It contains the various sub-modules that will handle the data processing and scheduling. IP
CS-PDU/
MSDU
PHY Frame
PHY Frame IP
CS-PDU/
MSDU

6. Base Station Implementation - Downlink
CID i
CID i+1
TrafficGen
Classifier
CID i+n
connManager
pduConstructor
DL_Scheduler
Mapper
QoS constraints
mac802_16
UL_Scheduler
Scheduler
ARQ
האנימציה בשקף זה לוקחת 45 שניות, ישנה תוספת של כדקה להסבר השקף. סה"כ ישנן כ-2 דקות של הסבר על שקף זה.
יוסבר עם מעבר המידע במערכת, כשהמידע מגיע משכבת הרשת (חבילות IP) ומעובד במערכת.
תאור בסיסי של Scheduling באנימציה יפה.
בניה של חבילות באנימציה יפה.
requestMng
Sink
pduDeconstructor
ListenDecode

7. Base Station Implementation - Downlink
PDU
PDU
PDU
TrafficGen
Classifier
connManager
pduConstructor
DL_Scheduler
Mapper
Mac802_16
UL_Scheduler
ARQ
requestMng
Sink
pduDeconstructor
ListenDecode

8. Base Station Implementation - Downlink
TrafficGen
Classifier
connManager
pduConstructor
DL_Scheduler
Mapper
Mac802_16
UL_Scheduler
ARQ
requestMng
Sink
pduDeconstructor
ListenDecode

9. Base Station Implementation - Uplink
TrafficGen
Classifier
connManager
pduConstructor
DL_Scheduler
Mapper
Mac802_16
UL_Scheduler
ARQ
requestMng
Sink
pduDeconstructor
ListenDecode

10. Modulation Chart
Basic modulation is QPSK. All management information passes in this modulation. 5
Next we have more advanced modulations, 16QAM and 64QAM.
10.5 16
QPSK
16QAM
SNR
64QAM
Further sub-divisions of these modulations include error-correction code implementation.

11. Traffic Simulation
Support is implemented for a diverse range of connection simulation.
They range from application-specific data to VoIP. Each data type has its own QoS requirements.
Further data types can be easily added into the database, and the BS scheduler can be changed to accommodate this change.
The system is fully modular.

12. Results - Statistics Collecting
Currently only Throughput and Average Delay are implemented. Further statistics collecting support will be added in the near future.

13. What Have We Learned?
The standard, from the general outline to the particulars of design and implementation.
Familiarization with the OMNeT++ network simulation platform, and simulation building in general.
Working as part of a team on a (relatively) large-scale project.

14. Thank you for your attention!
Questions?
Thank you for your attention!