IPv6 global connectivity for 6LoWPAN using short ID

6LoWPAN is for IPv6 packets to be sent to and received from over IEEE 802.15.4 based networks for applications which require wireless internet connectivity at lower data rates for devices. However it is well known that the management of addresses for devices that communicate across the two dissimilar domains of IPv6 and IEEE802.15.4 is complicated. Routing itself is another problem especially between the IPv6 domain and the IEEE802.15.4 domain. IEEE802.15.4 standard packet size is 127 bytes, among which IEEE 64 bit 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 via IPv6 domain, 256 bits of the source and destination addresses seem to be cumbersome in a limited MAC payload fields. Here we propose an IP address translation mechanism. When a device in IEEE802.15.4 domain needs to communicate with other nodes in IPv6 domain, it acquires its source ID and destination ID for source IP address and destination IP address, respectively from an IP translation-capable gateway. The device will send the packet using those ID's to the gateway, and then the gateway will translate it to normal IPv6 packet. This paper will show the detailed procedures and its performance.