Enhancements on the Loss of Beacon Frames in LR-WPANs
In beacon-enabled LR-WPANs, the high reliability of beacon frame transmission is required because all transmissions are controlled by the information in the beacon frame. However, the process for the beacon-loss scenario is not carefully considered in the standard. The method proposed in this paper allows a node not receiving a beacon frame to keep transmit its pending frames only within the minimum period of CAP based on the previously received beacon frame while the standard prevents the node from sending any pending frame during a whole superframe. The method is extensively simulated and proven the enhancements on the performances.
KeywordsLR-WPAN Beacon Sensor IEEE802.15.4
This research is supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (2012-0003609) and in part by the International Science and Business Belt Program through the Ministry of Education, Science and Technology (2012K001556).
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