A Context-Dependent Trust Model for the MAC Layer in LR-WPANs

Low rate wireless personal networks are vulnerable to several attacks focused on the Media Access Layer. Malicious or faulty nodes can subvert CSMA/CA and GTS allocation algorithms, achieving MAC unfairness in order to obtain higher medium access priority or to interrupt legitimate communication, ultimately leading to Denial-of-Service. While there exist secure protocol frameworks for LR-WPANs and diverse countermeasures against these attacks, most of them do not fit the usual computational and power supply constraints of LRWPAN nodes, which require less computationally intensive methods such as trust models.

Provided by: University of Brasilia Topic: Mobility Date Added: Dec 2010 Format: PDF

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