Improve IPv6 global connectivity for 6LoWPAN

IEEE 802.15.4 has limitations as short range, low bit rate, low power, and low cost. And IEEE 802.15.4 devices have limitation as computational power, memory, and/or energy availability. IEEE802.15.4 standard´s MTU is 127 bytes, among which IEEE 64 bits extended addresses may be used. After an association, 16 bits are used as an unique ID in a PAN L2, Still only 102 bytes are available for payload at MAC layer. Now considering the devices need to communicate with other nodes, 256 bits of the source and destination addresses seem to be cumbersome in a limited MAC payload fields. Therefore 6LoWPAN proposes that the nodes use the compress packet header for solving short MTU. But 6LoWPAN has limitation that in case of communication with dissimilar network. When a 6LoWPAN device communicates with Internet spend 128 bits in destination address. Therefore, we propose a new IPv6 address translation mechanism between IPv6 and ID. This mechanism has ID query and reply for external node. This paper will explain the detailed procedures and performance.