Energy-efficient and QoS Guaranteed MAC protocol in Ubiquitous Sensor Networks
Seong‐Hun Kim, Sunbok Goh, Chang-Ryul Jung, Sung‐Keun Lee · The Journal of the Korea institute of electronic communication sciences · 2008
The sensor node's performance is expected to be improved and the price will be largely decreased. As USN-applied field is expanded, multiple application services are expected to be provided through one USN soon. Multiple applications be required a periodic data reporting, consecutive information monitoring, event-driven data and query-based data as the data pattern that USN is delivered. Accordingly, the mechanism which can assure QoS according to each data characteristic is required. In this paper, A proposed protocol apply the duty cycle of S-MAC protocol variably and flexible according QoS level. This method largely reduces the delay on the delay-sensitive traffic, while keeping the energy efficiency.