摘要：Low-powerWireless Personal Area Networks (LoWPANs) comprise devices that conform to theIEEE standard 802.15.4. These networks need to be connected with other wirelessand wired networks in order to maximize the utilization of information andother resources which are mainly associated with the Internet Protocol(IP)-based networks. The transmission of IPv6 over Low Power Wireless PersonalArea Networks (6LoWPANs), requires a fragmentationand reassembly layer that also carries out header compression for transmissionefficiency. The existing proposed header format includes the originator’saddress in adaptation layer, to ensure along with other issues, that incase of a link failure, route error messages are delivered back to theoriginator. We propose the Unicast Back-Propagation Mechanism (UBP) thatdelivers the Route Error Message (RERR) tothe source even without having the originator’s address in 6LoWPAN adaptationlayer packet format. We make use of MAC layer address for sending the RERR tothe previous hop node, back tracking the route hop by hop, eventually to thesource. The simulation results show that our solution provides considerableheader compression yet shows better diagnostic performance as the RERR deliverymechanism in standard ad-hoc routing.
