1. 2001/11/23 Prof. Huei-Wen Ferng 1 Chapter 4 Wireless LAN Technologies and Products

2. 2001/11/23 Prof. Huei-Wen Ferng 2 Wireless LAN Products

3. 2001/11/23Prof. Huei-Wen Ferng3 Choosing a WLAN What are the applications? Is mobility required? What are the applications? Is mobility required? What level of performance is acceptable? What level of performance is acceptable? Will infrared satisfy the needs? Will infrared satisfy the needs? To what backbone networks do we need to connect? To what backbone networks do we need to connect? With what network OS do we need to work? With what network OS do we need to work? Is it secure? Is it secure? How easy is it to install? To use? To manage? How easy is it to install? To use? To manage? How much does it cost? ($500) How much does it cost? ($500)

4. 2001/11/23Prof. Huei-Wen Ferng4 Current Applications Wire replacement applications Wire replacement applications Mobile computing applications Mobile computing applications

5. 2001/11/23Prof. Huei-Wen Ferng5

6. 2001/11/23 6 Lucent WaveLAN

7. 2001/11/23Prof. Huei-Wen Ferng7 Product Line

8. 2001/11/23Prof. Huei-Wen Ferng8 Network Topology

9. 2001/11/23Prof. Huei-Wen Ferng9 Components of AP A wireless LAN adaptor to communicate with the wireless nodes A wireless LAN adaptor to communicate with the wireless nodes A wired adaptor to communicate over the backbone A wired adaptor to communicate over the backbone MAC layer bridging software to filter traffic from the backbone to the wireless subnet MAC layer bridging software to filter traffic from the backbone to the wireless subnet

10. 2001/11/23Prof. Huei-Wen Ferng10 System Engineering Spec. The radio The radio 902-928 MHz ISM band 902-928 MHz ISM band 2.4-2.483 GHz ISM band 2.4-2.483 GHz ISM band 250 mw power output in 900 MHz band, 100 mw in the 2.4 GHz band 250 mw power output in 900 MHz band, 100 mw in the 2.4 GHz band MAC MAC CSMA/CA CSMA/CA Modulation Modulation DSSS DQPSK Protocols supported Protocols supported Novell NetWare 2.x and 3.x TCP/IP LAN manger Windows for workgroups Banyan VINES

11. 2001/11/23Prof. Huei-Wen Ferng11 AP’s Functions MAC layer transparent bridge (IEEE 802.1D) MAC layer transparent bridge (IEEE 802.1D) Filtering/forwarding Filtering/forwarding Automatic learning and aging Automatic learning and aging Spanning tree algorithm Spanning tree algorithm SNMP management SNMP management Radio path diagnostics Radio path diagnostics Access control Access control Net ID Net ID

12. 2001/11/23Prof. Huei-Wen Ferng12 Supported PHY Types of Ethernet 10BaseT 10BaseT Twisted pair Ethernet Twisted pair Ethernet 10Base2 10Base2 Thin wire Ethernet Thin wire Ethernet 10Base5 10Base5 Thick wire Ethernet Thick wire Ethernet

13. 2001/11/23 Prof. Huei-Wen Ferng 13 DEC

14. 2001/11/23Prof. Huei-Wen Ferng14 Product Line

15. 2001/11/23Prof. Huei-Wen Ferng15 Protocols Supported Pathworks V4.1 Pathworks V4.1 Novell NetWare 2.x and 3.x Novell NetWare 2.x and 3.x TCP/IP TCP/IP LAN manager LAN manager Windows for workgroups Windows for workgroups Banyan VINES Banyan VINES

16. 2001/11/23Prof. Huei-Wen Ferng16 Products in the World

17. 2001/11/23Prof. Huei-Wen Ferng17 Products DECtransporter for the MS-DOS/MS-Windows DECtransporter for the MS-DOS/MS-Windows A TCP/IP package A TCP/IP package Enables cellular connection with appropriate modem, or a wired connection with appropriate modem Enables cellular connection with appropriate modem, or a wired connection with appropriate modem DECtransporter for OpenVMS VAX DECtransporter for OpenVMS VAX A TCP/IP to packet radio network gateway A TCP/IP to packet radio network gateway Enables connection to a private network over a public packet radio network such as Mobitex or ARDIS Enables connection to a private network over a public packet radio network such as Mobitex or ARDIS

18. 2001/11/23Prof. Huei-Wen Ferng18 Remote Connectivity Configuration

19. 2001/11/23 Prof. Huei-Wen Ferng 19 Solectek AIRLAN

20. 2001/11/23Prof. Huei-Wen Ferng20 Protocols Supported

21. 2001/11/23 Prof. Huei-Wen Ferng 21 Proxim RangeLAN 2

22. 2001/11/23Prof. Huei-Wen Ferng22 Product Line

23. 2001/11/23Prof. Huei-Wen Ferng23 Network Topology

24. 2001/11/23Prof. Huei-Wen Ferng24 System Technology FHSS FHSS 2.4-2.483 GHz ISM band 2.4-2.483 GHz ISM band 15 independent channels 15 independent channels CSMA/CA CSMA/CA 100 mw transmitted power 100 mw transmitted power GaAs semiconductor GaAs semiconductor Power from computer’s internal battery Power from computer’s internal battery

25. 2001/11/23Prof. Huei-Wen Ferng25 AP’s Capabilities MAC layer bridge MAC layer bridge Spanning tree protocol Spanning tree protocol Roaming from one bridge to another Roaming from one bridge to another Transparent to all Ethernets Transparent to all Ethernets SNMP agent provided SNMP agent provided Diverse protocols supported Diverse protocols supported Novell NetWare 2.x, 3.x, 4.x, Lite Novell NetWare 2.x, 3.x, 4.x, Lite LAN manager LAN manager Windows for Workgroups Windows for Workgroups

26. 2001/11/23Prof. Huei-Wen Ferng26 ISA Equipment Interface card Interface card Antenna Antenna Software Software Manual Manual

27. 2001/11/23Prof. Huei-Wen Ferng27 Installation Hardware Hardware Confirm default setting on card Confirm default setting on card Install card in computer Install card in computer Screw antenna onto connector in back of card Screw antenna onto connector in back of card Software Software Copy configured IPX.COM driver to hard disk Load the IPX driver and DOS shell, NETX Copy the LOGIN.EXE file

28. 2001/11/23 Prof. Huei-Wen Ferng 28 Xircom Netwave

29. 2001/11/23Prof. Huei-Wen Ferng29 Product Line

30. 2001/11/23Prof. Huei-Wen Ferng30 Technology FHSS FHSS 50 mw power output 50 mw power output 2.4-2.483 GHz ISM band 2.4-2.483 GHz ISM band Hop every 0.1s Hop every 0.1s Synchronized system Synchronized system

31. 2001/11/23Prof. Huei-Wen Ferng31 Network Topology

32. 2001/11/23Prof. Huei-Wen Ferng32 Two Kinds of Ad Hoc Nets Public hoc networks Public hoc networks Anyone in range can join a public ad hoc network Anyone in range can join a public ad hoc network Named ad hoc networks Named ad hoc networks One station must start a named network One station must start a named network Other stations join if they specify the name Other stations join if they specify the name Optional encryption is available Optional encryption is available

33. 2001/11/23 Prof. Huei-Wen Ferng 33 IBM Wireless LAN

34. 2001/11/23Prof. Huei-Wen Ferng34 Technology FHSS in the 2.4 GHz band FHSS in the 2.4 GHz band 100 mw power output 100 mw power output Antenna receive polarization diversity Antenna receive polarization diversity TDMA MAC layer (FCFS) TDMA MAC layer (FCFS) Ethernet and Token Ring compatibility Ethernet and Token Ring compatibility SNMP agent SNMP agent

35. 2001/11/23Prof. Huei-Wen Ferng35 Administration Function Authentication and privacy Authentication and privacy Users are registered with WNA (wireless network administrator) and provided secret keys Users are registered with WNA (wireless network administrator) and provided secret keys Registered stations are authenticated by AP Registered stations are authenticated by AP Optional encryption is available Optional encryption is available Interference management through change of hopping pattern Interference management through change of hopping pattern

36. 2001/11/23 Prof. Huei-Wen Ferng 36 Motorola Altair

37. 2001/11/23Prof. Huei-Wen Ferng37 Technology Not SS Not SS In the 18 GHz band In the 18 GHz band Low power- 25 mw Low power- 25 mw Comprised of a control module (CM) and a user module (UM) Comprised of a control module (CM) and a user module (UM) 8x11.5x3 inches in size 8x11.5x3 inches in size Antenna internal to module Antenna internal to module Packaging similar for both modules Packaging similar for both modules

38. 2001/11/23Prof. Huei-Wen Ferng38 Network Topology

39. 2001/11/23 Prof. Huei-Wen Ferng 39 Windata

40. 2001/11/23Prof. Huei-Wen Ferng40 Product Line

41. 2001/11/23Prof. Huei-Wen Ferng41 The Hub Functions Connectivity of transceivers Connectivity of transceivers Synchronization Synchronization Access security Access security Power control Power control Network management Network management

42. 2001/11/23Prof. Huei-Wen Ferng42 SNMP Functions Enabling and disabling transceivers Enabling and disabling transceivers Adding and deleting access to stations Adding and deleting access to stations Monitoring performance Monitoring performance Checking status of radio link Checking status of radio link

43. 2001/11/23Prof. Huei-Wen Ferng43 Network Topology

44. 2001/11/23 Prof. Huei-Wen Ferng 44 RadioLAN

45. 2001/11/23Prof. Huei-Wen Ferng45 Product Line ISA card ISA card Parallel port version Parallel port version RadioLAN/10 Access Unit RadioLAN/10 Access Unit Radio transceiver Radio transceiver Base station Base station

46. 2001/11/23Prof. Huei-Wen Ferng46 OS and Driver Support

47. 2001/11/23 Prof. Huei-Wen Ferng 47 Photonics

48. 2001/11/23Prof. Huei-Wen Ferng48 Product Line (for PC) PCMCIA II card PCMCIA II card ISA card ISA card Collaborative parallel option Collaborative parallel option AP AP External transceiver External transceiver

49. 2001/11/23Prof. Huei-Wen Ferng49 IR Transceiver

50. 2001/11/23Prof. Huei-Wen Ferng50 Diffuse IR

51. 2001/11/23Prof. Huei-Wen Ferng51 Network Topology

52. 2001/11/23 Prof. Huei-Wen Ferng 52 Spectrix

53. 2001/11/23Prof. Huei-Wen Ferng53 Network Topology

54. 2001/11/23Prof. Huei-Wen Ferng54 Network Block Diagram

55. 2001/11/23 Prof. Huei-Wen Ferng 55 InfraLAN

56. 2001/11/23Prof. Huei-Wen Ferng56 Directed IR Transceiver

57. 2001/11/23Prof. Huei-Wen Ferng57 Network Topology (Token Ring)

58. 2001/11/23Prof. Huei-Wen Ferng58 Network Topology (Ethernet PTP)

59. 2001/11/23Prof. Huei-Wen Ferng59 Network Topology (Ethernet Hub)

60. 2001/11/23Prof. Huei-Wen Ferng60 Comparisons (Mobile)

61. 2001/11/23Prof. Huei-Wen Ferng61 Comparisons (Wire Replacement)

62. 2001/11/23Prof. Huei-Wen Ferng62 References Rifaat A. Dayem, Mobile Data & Wireless LAN Technologies, Chapter 7. Rifaat A. Dayem, Mobile Data & Wireless LAN Technologies, Chapter 7.