Abstract
Wireless sensor networks (WSNs) are expected to be deployed in various areas in the future for monitoring and interacting with the physical environment. The sensors are constraint devices, so 6LoWPAN is proposed by IETF to adapt IPv6 into the WSNs environment. However, due to the use of short address and compression, IPv6/IPv4 enabled devices cannot support the 6LoWPAN adaptation layer as well as 802.15.4 address. The previous works proposed a gateway approach as a solution for connectivity between 6LoWPAN and Internet. Moreover, WSNs mostly work on battery-operated devices, constraint resources with mass probability of failures. Therefore, an efficient monitoring system becomes essential to ensure the proper functions such as detecting emergency event, failure, alarm as well as improving performance and lifetime of WSN. For this purpose, we propose an efficient gateway system with our gateway notification scheme designed specifically to support multiple monitoring systems' functions, which have not been addressed in the literature. The detail design, implementation, and test-bed are discussed in this paper.
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