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- research-articleApril 2018
Channel-Aware Rate Adaptation for Backscatter Networks
- Wei Gong,
- Haoxiang Liu,
- Jiangchuan Liu,
- Xiaoyi Fan,
- Kebin Liu,
- Qiang Ma,
- Xiaoyu Ji,
- Kebin Liu,
- Jiangchuan Liu,
- Xiaoyi Fan,
- Qiang Ma,
- Haoxiang Liu,
- Wei Gong,
- Xiaoyu Ji
IEEE/ACM Transactions on Networking (TON), Volume 26, Issue 2Pages 751–764https://doi.org/10.1109/TNET.2018.2802323Backscatter communication networks receive much attention recently due to the small size and low power of backscatter nodes. As backscatter communication is often influenced by the dynamic wireless channel quality, rate adaptation becomes necessary. ...
- research-articleJune 2017
Toward More Rigorous and Practical Cardinality Estimation for Large-Scale RFID Systems
IEEE/ACM Transactions on Networking (TON), Volume 25, Issue 3Pages 1347–1358https://doi.org/10.1109/TNET.2016.2634551Cardinality estimation is one of the fundamental problems in large-scale radio frequency identification systems. While many efforts have been made to achieve faster approximate counting, the accuracy of estimates itself has not received enough ...
- research-articleDecember 2016
Fast and Adaptive Continuous Scanning in Large-Scale RFID Systems
IEEE/ACM Transactions on Networking (TON), Volume 24, Issue 6Pages 3314–3325https://doi.org/10.1109/TNET.2016.2521333Radio Frequency Identification RFID technology plays an important role in supply chain logistics and inventory control. In these applications, a series of scanning operations at different locations are often needed to cover the entire inventory tags. In ...
- research-articleOctober 2016
Fast Composite Counting in RFID Systems
IEEE/ACM Transactions on Networking (TON), Volume 24, Issue 5Pages 2756–2767https://doi.org/10.1109/TNET.2015.2483681Counting the number of tags is a fundamental issue and has a wide range of applications in RFID systems. Most existing protocols, however, only apply to the scenario where a single reader counts the number of tags covered by its radio, or at most the ...
- research-articleApril 2016
Exploiting channel diversity for rate adaptation in backscatter communication networks
IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer CommunicationsPages 1–9https://doi.org/10.1109/INFOCOM.2016.7524404Backscatter communication networks receive much attention recently due to the small size and low power of backscatter nodes. As backscatter communication is often influenced by the dynamic wireless channel quality, rate adaptation becomes necessary. Most ...
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- research-articleAugust 2015
Link Scanner: Faulty Link Detection for Wireless Sensor Networks
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 8Aug. 2015, Pages 4428–4438https://doi.org/10.1109/TWC.2015.2421353In large-scale wireless sensor networks, faulty link detection plays a critical role in network diagnosis and management. Most potential network bottlenecks such as network partition and routing errors can be detected by link scan. Since sequentially ...
- research-articleJuly 2015
Opportunistic Concurrency: A MAC Protocol for Wireless Sensor Networks
IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 26, Issue 7July 2015, Pages 1999–2008https://doi.org/10.1109/TPDS.2014.2329307How to shorten the time for channel waiting is critical to avoid network contention. Traditional MAC protocols with CSMA often assume that a transmission must be deferred if the channel is busy, so they focus more on the optimization of serial ...
- research-articleMay 2015
Sherlock Is Around: Detecting Network Failures with Local Evidence Fusion
IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 26, Issue 5May 2015, Pages 1430–1440https://doi.org/10.1109/TPDS.2014.2320750Traditional approaches for wireless sensor network diagnosis are mainly sink-based. They actively collect global evidences from sensor nodes to the sink so as to conduct centralized analysis at the powerful back-end. On the one hand, long distance ...
- research-articleMay 2015
Directional Diagnosis for Wireless Sensor Networks
IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 26, Issue 5May 2015, Pages 1290–1300https://doi.org/10.1109/TPDS.2014.2308173Network diagnosis is crucial in managing a wireless sensor network (WSN) since many network-related faults, such as node and link failures, can easily happen. Diagnosis tools usually consist of two key components, information collection and root-cause ...
- ArticleJune 2014
Generic Composite Counting in RFID Systems
ICDCS '14: Proceedings of the 2014 IEEE 34th International Conference on Distributed Computing SystemsJune 2014, Pages 597–606https://doi.org/10.1109/ICDCS.2014.67Counting the number of RFID tags is a fundamental issue and has a wide range of applications in RFID systems. Most existing protocols, however, only apply to the scenario where a single reader counts the number of tags covered by its radio, or at most ...
- ArticleJune 2014
Enhancing Visibility of Network Performance in Large-Scale Sensor Networks
ICDCS '14: Proceedings of the 2014 IEEE 34th International Conference on Distributed Computing SystemsJune 2014, Pages 409–418https://doi.org/10.1109/ICDCS.2014.49Being embedded in the physical world, wireless sensor networks (WSNs) present a wide range of failures, due to environment conditions, hardware limitations and software uncertainties, and so on. Once deployed, the interactivity of a WSN greatly ...
- ArticleJune 2014
BOND: Exploring Hidden Bottleneck Nodes in Large-Scale Wireless Sensor Networks
ICDCS '14: Proceedings of the 2014 IEEE 34th International Conference on Distributed Computing SystemsJune 2014, Pages 399–408https://doi.org/10.1109/ICDCS.2014.48In a large-scale wireless sensor network, thousands of sensor nodes periodically generate and forward data back to the sink. In our recent outdoor deployment, we observe that some bottleneck nodes can greatly determine other nodes' data collection ratio,...
- ArticleMay 2014
Wonder: Efficient Tag Identification for Large-Scale RFID Systems
DCOSS '14: Proceedings of the 2014 IEEE International Conference on Distributed Computing in Sensor SystemsMay 2014, Pages 127–134https://doi.org/10.1109/DCOSS.2014.28Efficient tag identification is fundamentally required in large-scale RFID systems. Tag signal collision degrades identification efficiency as tag IDs involved in collision cannot be decoded. The situation becomes even worse in large-scale RFID systems ...
- articleApril 2014
IF: isolating fault nodes with mobile scanner
International Journal of Communication Systems (IJOCS), Volume 27, Issue 4April 2014, Pages 592–605https://doi.org/10.1002/dac.2703Fault diagnosis plays an important role on stable applications maintaining in wireless sensor networks WSNs. Most existing researchers are concerned about the statics nodes-based diagnosis techniques, which are incompetent to cope with those dynamically ...
- ArticleOctober 2013
End-to-End Delay Measurement in Wireless Sensor Networks without Synchronization
MASS '13: Proceedings of the 2013 IEEE 10th International Conference on Mobile Ad-Hoc and Sensor SystemsOctober 2013, Pages 583–591https://doi.org/10.1109/MASS.2013.71The deployment of large scale Wireless Sensor Networks generally needs network management and measurement solutions. End-to-end delay is one of the most important metrics in assessing the network performance. Many efforts have been devoted to measuring ...
- articleOctober 2013
Does Wireless Sensor Network Scale? A Measurement Study on GreenOrbs
IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 24, Issue 10October 2013, Pages 1983–1993https://doi.org/10.1109/TPDS.2012.216Sensor networks are deemed suitable for large-scale deployments in the wild for a variety of applications. In spite of the remarkable efforts the community put to build the sensor systems, an essential question still remains unclear at the system level, ...
- research-articleOctober 2012
Distributed Coverage in Wireless Ad Hoc and Sensor Networks by Topological Graph Approaches
IEEE Transactions on Computers (ITCO), Volume 61, Issue 10October 2012, Pages 1417–1428https://doi.org/10.1109/TC.2011.149Coverage problem is a fundamental issue in wireless ad hoc and sensor networks. Previous techniques for coverage scheduling often require accurate location information or range measurements, which cannot be easily obtained in resource-limited ad hoc and ...
- ArticleOctober 2010
Exploring the hidden connectivity in urban vehicular networks
ICNP '10: Proceedings of the The 18th IEEE International Conference on Network ProtocolsOctober 2010, Pages 243–252https://doi.org/10.1109/ICNP.2010.5762773The high mobility of VANET makes information exchange across the network excessively difficult. Traditional approaches designed for stationary networks are not applicable due to the high dynamics among the nodes. Applying the routing techniques tailored ...
- articleSeptember 2010
Long-term large-scale sensing in the forest: recent advances and future directions of GreenOrbs
- Yunhao Liu,
- Guomo Zhou,
- Jizhong Zhao,
- Guojun Dai,
- Xiang-Yang Li,
- Ming Gu,
- Huadong Ma,
- Lufeng Mo,
- Yuan He,
- Jiliang Wang,
- Mo Li,
- Kebin Liu,
- Wei Dong,
- Wei Xi
Frontiers of Computer Science in China (SPFCSC), Volume 4, Issue 3September 2010, Pages 334–338https://doi.org/10.1007/s11704-010-0123-2We introduce GreenOrbs, our recent effort in exploring the fundamental challenges and future direction of long-term large-scale applications of wireless sensor networks. An integrated framework with more than 1000 sensors has been implemented, including ...
- ArticleJune 2010
Distributed Coverage in Wireless Ad Hoc and Sensor Networks by Topological Graph Approaches
ICDCS '10: Proceedings of the 2010 IEEE 30th International Conference on Distributed Computing SystemsJune 2010, Pages 106–115https://doi.org/10.1109/ICDCS.2010.9Coverage problem is a fundamental issue in wireless ad hoc and sensor networks. Previous techniques for coverage scheduling often require accurate location information or range measurements, which cannot be easily obtained in resource-limited ad hoc and ...