Flexible Unicast-Based Group Communication for CoAP-Enabled Devices †

Sensors

Isam Ishaq¹  Jeroen Hoebeke¹  Floris Van den Abeele¹  Jen Rossey¹  Ingrid Moerman¹ 

[1] Department of Information Technology (INTEC), Ghent University - iMinds, Gaston Crommenlaan 8 Bus 201, Ghent 9050, Belgium; E-Mails:

关键词: Internet of Things;    CoAP;    sensors;    wireless sensor networks;    group communication;    entities;   

DOI  :  10.3390/s140609833

来源: mdpi

【 摘 要 】

Smart embedded objects will become an important part of what is called the Internet of Things. Applications often require concurrent interactions with several of these objects and their resources. Existing solutions have several limitations in terms of reliability, flexibility and manageability of such groups of objects. To overcome these limitations we propose an intermediately level of intelligence to easily manipulate a group of resources across multiple smart objects, building upon the Constrained Application Protocol (CoAP). We describe the design of our solution to create and manipulate a group of CoAP resources using a single client request. Furthermore we introduce the concept of profiles for the created groups. The use of profiles allows the client to specify in more detail how the group should behave. We have implemented our solution and demonstrate that it covers the complete group life-cycle, i.e., creation, validation, flexible usage and deletion. Finally, we quantitatively analyze the performance of our solution and compare it against multicast-based CoAP group communication. The results show that our solution improves reliability and flexibility with a trade-off in increased communication overhead.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.