Abstract:
THE PRESENT INVENTION RELATES TO A METHOD FOR RE-CONNECTING AN ISOLATED NODE IN A WIRELESS MESH NETWORK. WHEN A NODE IS ISOLATED FROM ITS NETWORK, THE METHOD ALLOWS THE NODE TO RE-CONNECT TO ITS NETWORK BY ROUTING THE ISOLATED NODE THROUGH A NEIGHBOURING WIRELESS MESH NETWORK. EACH NETWORK COMPRISES OF A GATEWAY (50) AND A PLURALITY OF WIRELESS NODES. THE GATEWAY (50) INCLUDES A MEMORY (51), AND A PROCESSOR (52) HAVING A COLLABORATION MODULE (53) AND A TRUST MODULE (54). THE COLLABORATION MODULE (53) IS USED TO ALLOW COLLABORATION BETWEEN THE WIRELESS MESH NETWORK AND THE NEIGHBOURING NETWORK. THE TRUST MODULE (54) IS USED TO DETERMINE WHETHER THE ISOLATED NODE BELONGS TO THE WIRELESS MESH NETWORK. EACH WIRELESS NODE (10) INCLUDES A MEMORY (11), AND A PROCESSOR (12) HAVING A COLLABORATION MODULE (13) TO ALLOW COMMUNICATION BETWEEN THE NODE (10) AND A WIRELESS NODE (10) OF THE NEIGHBOURING NETWORK.
Abstract:
A METHOD OF ROUTING COMMUNICATION ON-THE-GO IN A WIRELESS MOBILE NETWORK COMPRISING OF A PLURALITY OF MOBILE SENSOR NODES IS DISCLOSED. THE METHOD COMPRISES ENABLING EACH NODE TO GATHER INFORMATION ON ITS NEIGHBOURING NODES AND STORE THE INFORMATION IN THE NODES? RESPECTIVE NEIGHBOUR LIST TABLE COMPRISING NEIGHBOURING NODES? ADDRESSES, HOP DISTANCE AND NEXT INTERMEDIATE NEIGHBOURS? ADDRESS. THESE INFORMATION GATHERED MAY THEN BE SHARED AMONGST NEIGHBOURING NODES. USING THE GATHERED AND/OR SHARED INFORMATION, A ROUTE FOR COMMUNICATING MESSAGE TO A DESTINATION NODE IS THUS DETERMINED. THE ROUTE DETERMINING STEP IS CONSIDERED WITHIN A PREDETERMINED MAXIMUM NUMBER OF HOPS THROUGH THE NEIGHBOURING NODES. IF COMMUNICATION LINK TO THE DESTINATION IS BROKEN, THE GATHERED AND/OR SHARED INFORMATION MAY BE OPTIONALLY UPDATED. NEXT, A MESSAGE RECEIVED AT SAID EACH NODE IS DETERMINED WHETHER IT IS DESTINED FOR ITSELF OR TO BE ONWARDLY ROUTED TO A NEXT NEIGHBOURING NODE. AFTER THIS DETERMINATION, THE MESSAGE IS SENT TO THE DESTINATION OR INTERMEDIATE NODE. THE NODE AWARENESS MAY BE EXTENDED TO AT LEAST AT LEAST 2 HOPS AWAY AND THE MAXIMUM NUMBER OF HOPS MAY BE PREDETERMINED.
Abstract:
The present invention relates to a system and method for managing the sleeping mode of wireless sensor nodes (110) in a wireless sensor network for managing sleeping schedule of the wireless sensor nodes (110) during an event or crisis. The wireless sensor network comprises of at least one gateway and a plurality of wireless sensor node (110), wherein each wireless sensor node (100) includes a critical stage management module (111) and sleeping schedule management module (112) for managing sleeping mode during an event or crisis.