Data Aggregation Gateway Framework for CoAP Group Communications

作者：Cha Minki; Kwon Jung Hyok; Kim SungJin; Shon Taeshik; Kim Eui Jik^*

来源：Symmetry-Basel, 2016, 8(12): 138.

DOI：10.3390/sym8120138

• CoAP group communication
• data aggregation
• gateway framework
• Internet of Things
• jCoAP
• oneM2M

In this paper, a data aggregation gateway framework (DA-GW) for constrained application protocol (CoAP) group communications is proposed. The DA-GW framework is designed to improve the throughput performance and energy efficiency of group communication to monitor and control multiple sensor devices collectively with a single user terminal. The DA-GW consists of four function blocks-the message analyzer, group manager, message scheduler and data handler-and three informative databases-the client database, resource database and information database. The DA-GW performs group management and group communication through each functional block and stores resources in the informative databases. The DA-GW employs international standard-based data structures and provides the interoperability of heterogeneous devices used in various applications. The DA-GW is implemented using a Java-based open source framework called jCoAP to evaluate the functions and performance of the DA-GW. The experiment results showed that the DA-GW framework revealed better performance than existing group communication methods in terms of throughput and energy consumption.

• 出版日期2016-12