📄 http:^^athos.rutgers.edu^~badri^dataman^enviro.html
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Date: Tue, 14 Jan 1997 18:50:47 GMT
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Last-modified: Fri, 02 Aug 1996 15:26:58 GMT
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<!doctype html public "html.dtd" --><HTML><head><TITLE>DATAMAN Lab Configuration</TITLE></head><BODY BGCOLOR="#00FFFF" BACKGROUND="backgrnd2.gif" ><center><h1> DATAMAN Lab Configuration </h1><P><HR>The DATAMAN lab is a part of Department of Computer Science, Rutgers University. The description of hardware equipment and the software being used for research in Mobile Computing is given below: <P><h2> Hardware </h2>We use 386/486 PC-ATs running at 33 MHz for wireless base stations.These machines are connected to the Rutgers LCSR network viaEthernet. These machines are also equipped with 2 Mbps NCR Wavelan-ATcards for wireless communication. Wavelan is an indoor wireless LANwhich uses spread spectrum technology in the 900MHz ISM band. CSMA/CA is used for the Media Access protocol which provides Ethernet like interface to the higher layers. The range for Wavelan radio transmission is between 100-800 ft depending upon the office environment. We currently have three base stations with overlapping reception areasalthough non-overlapped cells can be simulated by configuring each basestation to use different MAC layer network ID for radio transmission. <P>The mobile hosts currently have two different configurations. Onetype is HP Vectra 486 PC-ATs running at 66 MHz which do not have anyEthernet (wired network) connection. These use Wavelan-AT cards to communicate with other mobile hosts and base station that are withinthe hearing distance. The other type is Toshiba T1950 series 486 laptops running at 40 Mhz. These use PCMCIA Wavelan cards for wirelesscommunication which are similar in operation to the Wavelan-AT cards.The laptops do not have any Ethernet connection either. <P><h2> Operating System </h2>All the mobile hosts (MHs) and the base stations or the Mobile SupportRouters (MSRs) run Mach 3.0 micro kernel (MK84) and UX server (UX40)which is similar to 4.3 BSD Tahoe release. The MSRs use Mobile IPprotocol from Columbia University to provide a virtual mobile subnetconsisting of multiple cells so that the MHs can move across thesewireless cells without having to change their IP address. The MSRsand the MHs also run the msrmicp and mhmicp programs respectivelywhich take care of beaconing and registration (Mobile InternetworkingControl Protocol) for Mobile IP. <P><HR>Last modified: August 1, 1996 <BR><ADDRESS>Julio Cesar Navas (<!WA0><a href=mailto:navas@cs.rutgers.edu>navas@cs.rutgers.edu</a>)</ADDRESS></center></body></HTML>⌨️ 快捷键说明
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