1. Subject Name : Wireless Communication Subject Code:10EC81
Prepared By : SHIMA RAMESH & SHIVLEELA
Department : ECE
Date:
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2. UNIT 1 INTRODUCTION TO WIRELESS TELECOMMUNICATION SYSTEMS AND NETWORKS
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3. TOPIC DETAILS
INTRODUCTION TO WIRELESS TELECOMMUNICATION SYSTEMS AND NETWORK
1G CELLULAR SYSTEMS 2G
2.5G 3G
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4. INTRODUCTION TO WIRELESS TELECOMMUNICATION SYSTEMS AND NETWORKS
Objectives
Discuss the concept of the different generations of wireless cellular systems.
Discuss the evolution and deployment of wireless cellular systems on a worldwide basis.
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5. Explain the basic operations and structure of a 1G cellular system.
Explain the difference between 1G, 2G, and 2.5G cellular systems.
Discuss the different subscriber services available over 2G mobile systems.
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6. -AMPS characteristics AMPS channels Traffic and control channels
1G Cellular Systems
-Introduction
Uplink and downlink
-AMPS characteristics
AMPS channels Traffic and control channels
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7. It uses Analog Frequency MODULATION Scheme for Transmission
1G INTRODUCTION
It uses Analog Frequency MODULATION Scheme for Transmission
Two Separate bands
UPLINK
DOWNLINK
System uses frequency Division Duplex
ID number used to determine mobile status ,perform Authentication,
define mobile Telephone number
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8. 1G Cellular Systems AMPS system components and layout
Radio base stations
Communications links
Mobile switching office
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9. Several to many base stations Many mobile stations
AMPS consists of
Several to many base stations
Many mobile stations
Mobile Telephone Switching office
2. BS forms cells that provide coverage to mobile subscriber over a particular
geographical area
3. The BS provides the interface both the MSC & MS
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10. AMPS Forward and reverse control and voice channels
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11. Transfer of control information over the AMPS forward and reverse control channels
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12. -Typical AMPS operations -AMPS security and identification
1G Cellular Systems
-Typical AMPS operations
-AMPS security and identification
-Summary of basic AMPS operations
Mobile phone Initialization
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13. AMPS ongoing idle mode tasks Mobile-to-land calls
Handshaking operations
Signaling operations
Service requests
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14. AMPS Forward and reverse control and voice channels
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15. Land-to-mobile and mobile-to-mobile calls
Paging
ID information exchange
Signaling
Control messages
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16. AMPS network operations
Radio base station operations
Base station control operations
Mobile switching center operations
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17. Handoff operations Handshaking operations Signal strength measurements
MSC operations during handoff
Confirmation messages
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18. 2G Cellular Systems Other AMPS details Other 1G systems Digital AMPS
TACS cellular NMT cellular NTT cellular
Other analog cellular systems
Digital AMPS
2G Cellular Systems
GSM-Deployed in 1991 began operation in late % of the world’s cellular customers subscribing to the service.
CDMA-Developed by Qualcomm corporation.
TDMA-Use at the 800MHz and then 1900 MHz.
PDC and PCS systems
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19. 2.5G Cellular Systems Evolution of mobile data services CDPD HSCSD
GPRS
Packet data over CDMA
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20. 3G Cellular Systems
-Introduction-Support high data rate,advanced multimedia services and global roaming
-3G characteristics
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21. 3G characteristics by cell size
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22. 3G Cellular Systems 3G radio interfaces
UMTS-Universal mobile telecommunication system terrestrial radio access network.
Cdma2000-is the enhanced wideband version of CDMA
UWC-136/EDGE-is the 3G proposal for the evolution of NA-TDMA cellular system
-4G cellular system-mix of new concept and technologies.
some new ideas are derived from 3G –evolutionary
some ideas are new (approaches)-revolutionary
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23. UNIT 2 COMMON CELLULAR SYSTEM COMPONENTS
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24. TOPIC DETAILS COMMON CELLULAR NETWORK COMPONENTS
BASE STATION SYSTEM COMPONENTS
HARDWARE VIEW OF CELLULAR NETWORK
SOFTWARE VIEW OF CELLULAR NETWORK
CELLULAR COMPONENT IDENTIFICATION
CALL ESTABLISHMENT
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25. Common Cellular system Components
Objectives
List the components of a wireless cellular network.
Discuss the functions of the following cellular network hardware components:
MS, RBS, BSC, and MSC
Discuss the functions of the following cellular network databases:
HLR, VLR, AUC, EIR, and so forth
Discuss the changes in the network components used to implement 3G wireless networks.
Explain the basic operations needed for call setup and call release.
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26. Common Cellular Network Components -Network switching system -Base station system -Mobile station
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27. Common Cellular Network Components -Subscriber devices
-Transmitter/Receiver section
-Man-machine interface
-Control subsystem
-Power subsystem
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28. Base station system components
Radio base station -TDMA and CDMA radio base stations
Base station controller
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29. Common Cellular Network Components
Transcoder controller
Vocoder
Switching system components
Visitor location register
Mobile switching center
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30. Common Cellular Network Components
MSC interface and switching functions
MSC signaling functions
MSC database functions
Home location register
HLR implementation and operation
HLR subscription profile
HLR/AUC interconnection
- Common Cellular Network Components
Interworking location register
Authentication center and equipment identity
Register
Gateway MSC
Interworking units
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31. Network management systems Other nodes Service center Billing gateway
Service order gateway
-Hardware and Software Views of the Cellular Network
Hardware view of a cellular network
Serving areas
Cells
MSC boundaries
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32. Hardware view of a cellular network
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33. Hardware view of a cellular network
The area of the left side diagram is served by MSC-1 and right side by MSC-2
MSC-1 interfaces with 3 BSC(BSC-1A, BSC-1B, BSC-1C
The GMSC is linked to PSTN by some form of high capacity T-carrier of Fibre span
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34. Software view of a cellular network
Location area identity
Cell global identity
Mobile country code and network code
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35. 3G Cellular System Components Core network Radio access network Radio network controller Radio base station
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36. Cellular Component Identification
Subscriber device identification
Mobile station ISDN identification number
North American version
The rest of the world
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37. Base station system components
Radio base station -TDMA and CDMA radio base stations
Base station controller
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38. Common Cellular Network Components
Transcoder controller
Vocoder
Switching system components
Visitor location register
Mobile switching center
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39. Common Cellular Network Components
MSC interface and switching functions
MSC signaling functions
MSC database functions
Home location register
HLR implementation and operation
HLR subscription profile
HLR/AUC interconnection
- Common Cellular Network Components
Interworking location register
Authentication center and equipment identity
Register
Gateway MSC
Interworking units
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40. Network management systems Other nodes Service center Billing gateway
Service order gateway
-Hardware and Software Views of the Cellular Network
Hardware view of a cellular network
Serving areas
Cells
MSC boundaries
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41. Cellular Component Identification
International mobile subscriber identity
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42. Cellular Component Identification
International mobile equipment identity
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43. Call Establishment Mobile-terminated call PSTN messages
GMSC operations
MSC/VLR operations
BSC operations
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44. Call Establishment Mobile-originated call Mobile operations
Radio base station operations
Base station controller operations
MSC operations
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45. Call Establishment Call release Connection management operations
Radio resource operations
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46. UNIT 3 WIRELESS NETWORK ARCHITECTURE AND OPERATION
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47. TABLE OF CONTENTS Wireless Network Architecture and Operation
Cellular hierarchy
Cell Fundamentals And Reuse Number
Capacity Expansion Techniques
Mobility Management
Power and Radio Resource Management
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48. Wireless Network Architecture and Operation
Objectives
Discuss the cellular concept and explain the advantages of frequency reuse.
Draw a diagram of a typical cellular cluster and explain the meaning of frequency reuse number.
Discuss how the capacity of a cellular system may be expanded.
Explain the difference between cell splitting and sectoring.
Discuss the use of backhaul networks for cellular systems.
Explain the concept of mobility management and discuss the operations it supports.
Discuss the concepts of power management and network security.
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49. Introduction The Cellular Concept Introduction The cellular advantage
Simplex and duplex
The cellular advantage
Clusters-group of cells
Frequency reuse
Capacity expansion-by cell sectoring and splitting
Number of cells in acluster is known as a cluster size or frequency reuse factor
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50. Cellular hierarchy -Picocells -Microcells -Marocells -Megacells
-Femtocells
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51. Cell Fundamentals
The use of hexagons-is the closest approximation to a circle
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52. -Cellular reuse patterns -The frequency reuse distance
-Reuse number
-Cellular reuse patterns
-The frequency reuse distance
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53. Cell Fundamentals Cellular interference issues
Signal-to-interference ratio
Channel assignments
See Table
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54. Capacity Expansion Techniques
Cell splitting
Concept of splitting
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55. Capacity Expansion Techniques
Cell sectoring
Sectoring concept
Interference issues
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56. Capacity Expansion Techniques
Overlaid cells
Overlay concept
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57. Capacity Expansion Techniques
Channel allocation
call blocking
equal distribution of channels for each equal size
Other capacity expansion schemes
Lee’s microcell technology
Smart antenna technology
Migration to digital technology
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58. Cellular Backhaul Networks
Introduction
Standards for PSTN carriers
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59. Mobility Management Location management Need Frequency
Location updating
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60. Mobility Management Paging messages Different paging schemes
Transmission of the location information between network elements
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61. Mobility Management Handoff management Handoff control
Handoff operation
Handoff algorithm
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62. Radio Resources and Power Management
Power control
Power saving schemes
Discontinuous transmission
Sleep modes
Energy efficient designs
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