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Abstract
The Constrained Application Protocol (CoAP) is a lightweight protocol that enables the implementation of RESTful embedded web services. Observe is one of the CoAP extensions, which allow servers to send every resource state change to interested clients. In this paper we present an interesting extension to the observe option, called conditional observation, where clients specify notification criteria along their observation request. We evaluate the feasibility of implementing this on a constrained device and evaluate the correct operation for a simple scenario. It is shown that the use of conditional observations can result in a reduced number of packets and power consumption compared to normal observe in combination with client-side filtering.
Keywords
Conditional Observation, IBCN, IoT, REST, CoAP

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Citation

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MLA
Teklemariam, Girum Ketema, et al. “Efficiently Observing Internet of Things Resources.” 2012 IEEE International Conference on Green Computing and Communications, Conference on Internet of Things, and Conference on Cyber, Physical and Social Computing (GreenCom 2012), IEEE, 2012, pp. 446–49.
APA
Teklemariam, G. K., Hoebeke, J., Moerman, I., Demeester, P., Tao, L. S., & Jara, A. J. (2012). Efficiently observing Internet of Things resources. In 2012 IEEE International conference on green computing and communications, conference on Internet of things, and conference on cyber, physical and social computing (GreenCom 2012) (pp. 446–449). New York, NY, USA: IEEE.
Chicago author-date
Teklemariam, Girum Ketema, Jeroen Hoebeke, Ingrid Moerman, Piet Demeester, Li Shi Tao, and Antonio J Jara. 2012. “Efficiently Observing Internet of Things Resources.” In 2012 IEEE International Conference on Green Computing and Communications, Conference on Internet of Things, and Conference on Cyber, Physical and Social Computing (GreenCom 2012), 446–49. New York, NY, USA: IEEE.
Chicago author-date (all authors)
Teklemariam, Girum Ketema, Jeroen Hoebeke, Ingrid Moerman, Piet Demeester, Li Shi Tao, and Antonio J Jara. 2012. “Efficiently Observing Internet of Things Resources.” In 2012 IEEE International Conference on Green Computing and Communications, Conference on Internet of Things, and Conference on Cyber, Physical and Social Computing (GreenCom 2012), 446–449. New York, NY, USA: IEEE.
Vancouver
1.
Teklemariam GK, Hoebeke J, Moerman I, Demeester P, Tao LS, Jara AJ. Efficiently observing Internet of Things resources. In: 2012 IEEE International conference on green computing and communications, conference on Internet of things, and conference on cyber, physical and social computing (GreenCom 2012). New York, NY, USA: IEEE; 2012. p. 446–9.
IEEE
[1]
G. K. Teklemariam, J. Hoebeke, I. Moerman, P. Demeester, L. S. Tao, and A. J. Jara, “Efficiently observing Internet of Things resources,” in 2012 IEEE International conference on green computing and communications, conference on Internet of things, and conference on cyber, physical and social computing (GreenCom 2012), Besançon, France, 2012, pp. 446–449.
@inproceedings{3259131,
  abstract     = {The Constrained Application Protocol (CoAP) is a lightweight protocol that enables the implementation of RESTful embedded web services. Observe is one of the CoAP extensions, which allow servers to send every resource state change to interested clients. In this paper we present an interesting extension to the observe option, called conditional observation, where clients specify notification criteria along their observation request. We evaluate the feasibility of implementing this on a constrained device and evaluate the correct operation for a simple scenario. It is shown that the use of conditional observations can result in a reduced number of packets and power consumption compared to normal observe in combination with client-side filtering.},
  author       = {Teklemariam, Girum Ketema and Hoebeke, Jeroen and Moerman, Ingrid and Demeester, Piet and Tao, Li Shi and Jara, Antonio J},
  booktitle    = {2012 IEEE International conference on green computing and communications, conference on Internet of things, and conference on cyber, physical and social computing (GreenCom 2012)},
  isbn         = {9780769548654},
  keywords     = {Conditional Observation,IBCN,IoT,REST,CoAP},
  language     = {eng},
  location     = {Besançon, France},
  pages        = {446--449},
  publisher    = {IEEE},
  title        = {Efficiently observing Internet of Things resources},
  url          = {http://dx.doi.org/10.1109/GreenCom.2012.70},
  year         = {2012},
}

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