Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
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
Architecture and techniques for diagnosing faults in IEEE 802.11 infrastructure networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Routing in multi-radio, multi-hop wireless mesh networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Congestion control and fairness for many-to-one routing in sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Idle sense: an optimal access method for high throughput and fairness in rate diverse wireless LANs
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
ExOR: opportunistic multi-hop routing for wireless networks
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
MOJO: a distributed physical layer anomaly detection system for 802.11 WLANs
Proceedings of the 4th international conference on Mobile systems, applications and services
WiFiProfiler: cooperative diagnosis in wireless LANs
Proceedings of the 4th international conference on Mobile systems, applications and services
A practical cross-layer mechanism for fairness in 802.11 networks
Mobile Networks and Applications - Special issue: Recent advances in wireless networking
XORs in the air: practical wireless network coding
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Robust rate adaptation for 802.11 wireless networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Trading structure for randomness in wireless opportunistic routing
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
FatVAP: aggregating AP backhaul capacity to maximize throughput
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
Opportunistic use of client repeaters to improve performance of WLANs
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
IEEE Transactions on Information Theory
Polynomial time algorithms for multicast network code construction
IEEE Transactions on Information Theory
CoopMAC: A Cooperative MAC for Wireless LANs
IEEE Journal on Selected Areas in Communications
Cooperative Relay Service in a Wireless LAN
IEEE Journal on Selected Areas in Communications
Novel association control strategies for multicasting in relay-enabled WLANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
Network coding for unicast in a WiFi hotspot: Promises, challenges, and testbed implementation
Computer Networks: The International Journal of Computer and Telecommunications Networking
Energy consumption anatomy of 802.11 devices and its implication on modeling and design
Proceedings of the 8th international conference on Emerging networking experiments and technologies
Exploring the potential in practice for opportunistic networks amongst smart mobile devices
Proceedings of the 19th annual international conference on Mobile computing & networking
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Currently deployed IEEE 802.11 WLANs (Wi-Fi networks) share access point (AP) bandwidth on a per-packet basis. However, various stations communicating with the AP often have different signal qualities, resulting in different transmission rates. This induces a phenomenon known as the rate anomaly problem, in which stations with lower signal quality transmit at lower rates and consume a significant majority of airtime, thereby dramatically reducing the throughput of stations transmitting at higher rates. We propose SoftRepeater, a practical, deployable system in which stations cooperatively address the rate anomaly problem. Specifically, higher rateWi-Fi stations opportunistically transform themselves into repeaters for lower rate stations when transmitting data to/from the AP. The key challenge is to determine when it is beneficial to enable the repeater functionality. In view of this, we propose an initiation protocol that ensures that repeater functionality is enabled only when appropriate. Also, our system can run directly on top of today's 802.11 infrastructure networks. In addition, we describe a novel, zero-overhead network coding scheme that further alleviates undesirable symptoms of the rate anomaly problem. Using simulation and testbed implementation, we find that SoftRepeater can improve cumulative throughput by up to 200%.