چکیده (انگلیسی):

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