Ambience Project ³Find a Meeting´ Video - Sidi Mohammed Senouci

installed on all wireless nodes (including robots in therobot-based routing). This tool allows the visualisationof the entire network state including the state of eachnode, links as well as the entire topology. It will alsovisualise the routing tables of each node (Figure 10).This tool was developed independently of theunderlying ad-hoc routing protocol and can be usedfor either proactive or reactive ad-hoc routingprotocols.)LJXUH3HUIRUPDQFHHYDOXDWLRQRI42/655RERW5RXWLQJThe robot implements an ad hoc routing algorithm inorder to support multi-hop routing (in an IPv6environment). In other words, the robot can either beused to connect several wireless devices that are notwithin the range of one another or as an extension ofan existing infrastructure – in which case a gatewaybetween the fixed infrastructure and the ad hocnetwork is used, as depicted Figure 6. Contrary tomany classical ad hoc networks, routing is designedhierarchically such that communication relays areexclusively robots (and not low capacity nodes --battery, CPU, etc.). The use of a wireless networkcore made up of mobile robots adds some control inthe ad hoc network. This feature is essential in orderto provide an acceptable link quality, increase networkperformance, and thus support real time services inthe network, as shown in [LeG03].Monitoring agents gives the following set ofinformation to the monitoring station (as shown inFigure 10):xxxxTimestamp (date:jjmmyyyy/hour:hhmmss)Node’s addressing information (IP address,subnet mask, gateway address, MACaddress, SSID)Routing table with neighbour’s IP addressesMonitored wireless link characteristics (radiochannel ID, noise, signal strength, packeterror ratio)gatewayAPPDADedicated mobile routersAd hoc network)LJXUH$GKRF1HWZRUNLQJZLWKWKH0RELOH5RERWV0RQLWRULQJWKH$GKRF1HWZRUNA monitoring station was developed to show theimprovements obtained when using the QOLSR or therobot-based routing compared to the OLSR protocol.The monitoring station is based on monitoring agentsPDA)LJXUH0RQLWRULQJVWDWLRQVQDSVKRW6XPPDU\RI7HFKQRORJ\The key technologies demonstrated are:x Natural speech recognition – Thales, Francex Java based iPAQ GUI – CCC, Finlandx XML message system – CCC, Finlandx ZigBee positioning - Philips, UK