Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Proceedings of the 7th annual international conference on Mobile computing and networking
Coping with communication gray zones in IEEE 802.11b based ad hoc networks
WOWMOM '02 Proceedings of the 5th ACM international workshop on Wireless mobile multimedia
SPEED: A Stateless Protocol for Real-Time Communication in Sensor Networks
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
Understanding packet delivery performance in dense wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Taming the underlying challenges of reliable multihop routing in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Link-level measurements from an 802.11b mesh network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Comparison of routing metrics for static multi-hop wireless networks
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Efficient geographic routing in multihop wireless networks
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
ExOR: opportunistic multi-hop routing for wireless networks
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Kansei: a testbed for sensing at scale
Proceedings of the 5th international conference on Information processing in sensor networks
Design of a wireless sensor network platform for detecting rare, random, and ephemeral events
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
On accurate measurement of link quality in multi-hop wireless mesh networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Proceedings of the 12th annual international conference on Mobile computing and networking
An analysis of unreliability and asymmetry in low-power wireless links
ACM Transactions on Sensor Networks (TOSN)
Throughput analysis of IEEE802.11 multi-hop ad hoc networks
IEEE/ACM Transactions on Networking (TON)
Trading structure for randomness in wireless opportunistic routing
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Robust and timely communication over highly dynamic sensor networks
Real-Time Systems
Impact of Routing Metrics on Path Capacity in Multirate and Multihop Wireless Ad Hoc Networks
ICNP '06 Proceedings of the Proceedings of the 2006 IEEE International Conference on Network Protocols
Visibility: a new metric for protocol design
Proceedings of the 5th international conference on Embedded networked sensor systems
Data forwarding in extremely low duty-cycle sensor networks with unreliable communication links
Proceedings of the 5th international conference on Embedded networked sensor systems
Link Estimation and Routing in Sensor Network Backbones: Beacon-Based or Data-Driven?
IEEE Transactions on Mobile Computing
A robust data delivery protocol for large scale sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Quality-Aware Routing Metrics for Time-Varying Wireless Mesh Networks
IEEE Journal on Selected Areas in Communications
| Hi-index | 0.00 |
Link estimation is a basic element of routing in low-power wireless networks, and data-driven link estimation using unicast MAC feedback has been shown to outperform broadcast-beacon based link estimation. Nonetheless, little is known about the impact that different data-driven link estimation methods have on routing behaviors. To address this issue, we classify existing data-driven link estimation methods into two broad categories: L-NT that uses aggregate information about unicast and L-ETX that uses information about the individual unicast-physical transmissions. Through mathematical analysis and experimental measurement in a testbed of 98 XSM motes (an enhanced version of MICA2 motes), we examine the accuracy and stability of L-NT and L-ETX in estimating the ETX routing metric. We also experimentally study the routing performance of L-NT and L-ETX. We discover that these two representative, seemingly similar methods of data-driven link estimation differ significantly in routing behaviors: L-ETX is much more accurate and stable than L-NT in estimating the ETX metric, and, accordingly, L-ETX achieves a higher data delivery reliability and energy efficiency than L-NT (for instance, by 25.18% and a factor of 3.75 respectively in our testbed). These findings provide new insight into the subtle design issues in data-driven link estimation that significantly impact the reliability, stability, and efficiency of wireless routing, thus shedding light on how to design link estimation methods for mission-critical wireless networks which pose stringent requirements on reliability and predictability.