Wireless LAN Technologies and Products Chapter 4 Wireless LAN Technologies and Products 2018/11/12 Prof. Huei-Wen Ferng

Wireless LAN Products 2018/11/12 Prof. Huei-Wen Ferng

Choosing a WLAN What are the applications? Is mobility required? What level of performance is acceptable? Will infrared satisfy the needs? To what backbone networks do we need to connect? With what network OS do we need to work? Is it secure? How easy is it to install? To use? To manage? How much does it cost? ($500) 2018/11/12 Prof. Huei-Wen Ferng

Current Applications Wire replacement applications Mobile computing applications 2018/11/12 Prof. Huei-Wen Ferng

2018/11/12 Prof. Huei-Wen Ferng

Lucent WaveLAN 2018/11/12 Prof. Huei-Wen Ferng

Product Line 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

Components of AP A wireless LAN adaptor to communicate with the wireless nodes A wired adaptor to communicate over the backbone MAC layer bridging software to filter traffic from the backbone to the wireless subnet 2018/11/12 Prof. Huei-Wen Ferng

System Engineering Spec. The radio 902-928 MHz 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 MAC CSMA/CA Modulation DSSS DQPSK Protocols supported Novell NetWare 2.x and 3.x TCP/IP LAN manger Windows for workgroups Banyan VINES 2018/11/12 Prof. Huei-Wen Ferng

AP’s Functions MAC layer transparent bridge (IEEE 802.1D) Filtering/forwarding Automatic learning and aging Spanning tree algorithm SNMP management Radio path diagnostics Access control Net ID 2018/11/12 Prof. Huei-Wen Ferng

Supported PHY Types of Ethernet 10BaseT Twisted pair Ethernet 10Base2 Thin wire Ethernet 10Base5 Thick wire Ethernet 2018/11/12 Prof. Huei-Wen Ferng

DEC 2018/11/12 Prof. Huei-Wen Ferng

Product Line 2018/11/12 Prof. Huei-Wen Ferng

Protocols Supported Pathworks V4.1 Novell NetWare 2.x and 3.x TCP/IP LAN manager Windows for workgroups Banyan VINES 2018/11/12 Prof. Huei-Wen Ferng

Products in the World 2018/11/12 Prof. Huei-Wen Ferng

Products DECtransporter for the MS-DOS/MS-Windows A TCP/IP package Enables cellular connection with appropriate modem, or a wired connection with appropriate modem DECtransporter for OpenVMS VAX 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 2018/11/12 Prof. Huei-Wen Ferng

Remote Connectivity Configuration 2018/11/12 Prof. Huei-Wen Ferng

Solectek AIRLAN 2018/11/12 Prof. Huei-Wen Ferng

Protocols Supported 2018/11/12 Prof. Huei-Wen Ferng

Proxim RangeLAN 2 2018/11/12 Prof. Huei-Wen Ferng

Product Line 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

System Technology FHSS 2.4-2.483 GHz ISM band 15 independent channels CSMA/CA 100 mw transmitted power GaAs semiconductor Power from computer’s internal battery 2018/11/12 Prof. Huei-Wen Ferng

AP’s Capabilities MAC layer bridge Spanning tree protocol Roaming from one bridge to another Transparent to all Ethernets SNMP agent provided Diverse protocols supported Novell NetWare 2.x, 3.x, 4.x, Lite LAN manager Windows for Workgroups 2018/11/12 Prof. Huei-Wen Ferng

ISA Equipment Interface card Antenna Software Manual 2018/11/12 Prof. Huei-Wen Ferng

Installation Hardware Software Confirm default setting on card Install card in computer Screw antenna onto connector in back of card Software Copy configured IPX.COM driver to hard disk Load the IPX driver and DOS shell, NETX Copy the LOGIN.EXE file 2018/11/12 Prof. Huei-Wen Ferng

Xircom Netwave 2018/11/12 Prof. Huei-Wen Ferng

Product Line 2018/11/12 Prof. Huei-Wen Ferng

Technology FHSS 50 mw power output 2.4-2.483 GHz ISM band Hop every 0.1s Synchronized system 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

Two Kinds of Ad Hoc Nets Public hoc networks Named ad hoc networks Anyone in range can join a public ad hoc network Named ad hoc networks One station must start a named network Other stations join if they specify the name Optional encryption is available 2018/11/12 Prof. Huei-Wen Ferng

IBM Wireless LAN 2018/11/12 Prof. Huei-Wen Ferng

Technology FHSS in the 2.4 GHz band 100 mw power output Antenna receive polarization diversity TDMA MAC layer (FCFS) Ethernet and Token Ring compatibility SNMP agent 2018/11/12 Prof. Huei-Wen Ferng

Administration Function Authentication and privacy Users are registered with WNA (wireless network administrator) and provided secret keys Registered stations are authenticated by AP Optional encryption is available Interference management through change of hopping pattern 2018/11/12 Prof. Huei-Wen Ferng

Motorola Altair 2018/11/12 Prof. Huei-Wen Ferng

Technology Not SS In the 18 GHz band Low power- 25 mw Comprised of a control module (CM) and a user module (UM) 8x11.5x3 inches in size Antenna internal to module Packaging similar for both modules 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

Windata 2018/11/12 Prof. Huei-Wen Ferng

Product Line 2018/11/12 Prof. Huei-Wen Ferng

The Hub Functions Connectivity of transceivers Synchronization Access security Power control Network management 2018/11/12 Prof. Huei-Wen Ferng

SNMP Functions Enabling and disabling transceivers Adding and deleting access to stations Monitoring performance Checking status of radio link 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

RadioLAN 2018/11/12 Prof. Huei-Wen Ferng

Product Line ISA card Parallel port version RadioLAN/10 Access Unit Radio transceiver Base station 2018/11/12 Prof. Huei-Wen Ferng

OS and Driver Support 2018/11/12 Prof. Huei-Wen Ferng

Photonics 2018/11/12 Prof. Huei-Wen Ferng

Product Line (for PC) PCMCIA II card ISA card Collaborative parallel option AP External transceiver 2018/11/12 Prof. Huei-Wen Ferng

IR Transceiver 2018/11/12 Prof. Huei-Wen Ferng

Diffuse IR 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

Spectrix 2018/11/12 Prof. Huei-Wen Ferng

Network Topology 2018/11/12 Prof. Huei-Wen Ferng

Network Block Diagram 2018/11/12 Prof. Huei-Wen Ferng

InfraLAN 2018/11/12 Prof. Huei-Wen Ferng

Directed IR Transceiver 2018/11/12 Prof. Huei-Wen Ferng

Network Topology (Token Ring) 2018/11/12 Prof. Huei-Wen Ferng

Network Topology (Ethernet PTP) 2018/11/12 Prof. Huei-Wen Ferng

Network Topology (Ethernet Hub) 2018/11/12 Prof. Huei-Wen Ferng

Comparisons (Mobile) 2018/11/12 Prof. Huei-Wen Ferng

Comparisons (Wire Replacement) 2018/11/12 Prof. Huei-Wen Ferng

References Rifaat A. Dayem, Mobile Data & Wireless LAN Technologies, Chapter 7. 2018/11/12 Prof. Huei-Wen Ferng