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MOBIHOC
2005
ACM

Reliable bursty convergecast in wireless sensor networks

9 years 10 months ago
Reliable bursty convergecast in wireless sensor networks
We address the challenges of bursty convergecast in multi-hop wireless sensor networks, where a large burst of packets from different locations needs to be transported reliably and in real-time to a base station. Via experiments on a 49 MICA2 mote sensor network using a realistic traffic trace, we determine the primary issues in bursty convergecast, and accordingly design a protocol, RBC (for Reliable Bursty Convergecast), to address these issues: To improve channel utilization and to reduce ack-loss, we design a window-less block acknowledgment scheme that guarantees continuous packet forwarding and replicates the acknowledgment for a packet; to alleviate retransmission-incurred channel contention, we introduce differentiated contention control. Moreover, we design mechanisms to handle varying ack-delay and to reduce delay in timer-based retransmissions. We evaluate RBC, again via experiments, and show that compared to a commonly used implicit-ack scheme, RBC doubles packet delivery ...
Hongwei Zhang, Anish Arora, Young-ri Choi, Mohamed
Added 24 Dec 2009
Updated 24 Dec 2009
Type Conference
Year 2005
Where MOBIHOC
Authors Hongwei Zhang, Anish Arora, Young-ri Choi, Mohamed G. Gouda
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