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Choi, Young-Ri
System Software Lab
Research Interests
  • Computer systems, system software, cloud computing, virtualization

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Reliable bursty convergecast in wireless sensor networks

Cited 20 times inthomson ciCited 38 times inthomson ci
Title
Reliable bursty convergecast in wireless sensor networks
Author
Zhang, HongweiArora, AnishChoi, Young-RiGouda, Mohamed G.
Issue Date
2007-09
Publisher
ELSEVIER SCIENCE BV
Citation
COMPUTER COMMUNICATIONS, v.30, no.13, pp.2560 - 2576
Abstract
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 ratio and reduces end-to-end delay by an order of magnitude, as a result of which RBC achieves a close-to-optimal goodput.
URI
https://scholarworks.unist.ac.kr/handle/201301/8077
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34548455373
DOI
10.1016/j.comcom.2007.05.046
ISSN
0140-3664
Appears in Collections:
CSE_Journal Papers
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