Hot-spot congestion relief and service guarantees in public-area wireless networks
ACM SIGCOMM Computer Communication Review
Handoffs in Cellular Wireless Networks: The Daedalus Implementation and Experience
Wireless Personal Communications: An International Journal
An empirical analysis of the IEEE 802.11 MAC layer handoff process
ACM SIGCOMM Computer Communication Review
Fairness and load balancing in wireless LANs using association control
Proceedings of the 10th annual international conference on Mobile computing and networking
Self-management in chaotic wireless deployments
Proceedings of the 11th annual international conference on Mobile computing and networking
Facilitating access point selection in IEEE 802.11 wireless networks
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
Exploiting partially overlapping channels in wireless networks: turning a peril into an advantage
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
Measurement based analysis of the handover in a WLAN MIPv6 scenario
PAM'05 Proceedings of the 6th international conference on Passive and Active Network Measurement
IEEE Communications Magazine
The need for cross-layer information in access point selection algorithms
Proceedings of the 6th ACM SIGCOMM conference on Internet measurement
Understanding handoffs in large ieee 802.11 wireless networks
Proceedings of the 7th ACM SIGCOMM conference on Internet measurement
Supporting vehicular mobility in urban multi-hop wireless networks
Proceedings of the 6th international conference on Mobile systems, applications, and services
Composcan: adaptive scanning for efficient concurrent communications and positioning with 802.11
Proceedings of the 6th international conference on Mobile systems, applications, and services
Wi-Fi neighborcast: enabling communication among nearby clients
Proceedings of the 9th workshop on Mobile computing systems and applications
Predictive methods for improved vehicular WiFi access
Proceedings of the 7th international conference on Mobile systems, applications, and services
Achievable throughput-based MAC layer handoff in IEEE 802.11 wireless local area networks
EURASIP Journal on Wireless Communications and Networking - Special issue on enabling Wireless Technologies for Green Pervasive Computing
Cognitive network access using fuzzy decision making
IEEE Transactions on Wireless Communications
Investigation of handoffs for IEEE 802.11 networks in vehicular environment
ICUFN'09 Proceedings of the first international conference on Ubiquitous and future networks
Improving the IEEE 802.11 MAC layer handoff latency to support multimedia traffic
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
An 802.11k compliant framework for cooperative handoff in wireless networks
EURASIP Journal on Wireless Communications and Networking
Timely Effective Handover Mechanism in Heterogeneous Wireless Networks
Wireless Personal Communications: An International Journal
Throughput-based MAC layer handoff in WLAN
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Reliable event detectors for constrained resources wireless sensor node hardware
EURASIP Journal on Embedded Systems
Mobile Networks and Applications
Using predictive triggers to improve handover performance in mixed networks
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
SOLTA: a service oriented link triggering algorithm for MIH implementations
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Designing a practical access point association protocol
INFOCOM'10 Proceedings of the 29th conference on Information communications
HaND: fast handoff with null dwell time for IEEE 802.11 networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Enabling faster and smoother handoffs in AP-dense 802.11 wireless networks
Computer Communications
A study of the discovery process in 802.11 networks
ACM SIGMOBILE Mobile Computing and Communications Review
TRAWL: a traffic route adapted weighted learning algorithm
WWIC'11 Proceedings of the 9th IFIP TC 6 international conference on Wired/wireless internet communications
OmniVoice: a mobile voice solution for small-scale enterprises
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
A game theoretical study of access point association in wireless mesh networks
Computer Communications
Optimizing throughput performance of FMIPv6 over legacy 802.11 networks using iterative scanning
Computer Networks: The International Journal of Computer and Telecommunications Networking
Developments and Constraints in 802.11-Based Roadside-to-Vehicle Communications
Wireless Personal Communications: An International Journal
MRMV: design and evaluation of a multi-radio multi-vehicle system for metro-WiFi access
Proceeding of the tenth ACM international workshop on Vehicular inter-networking, systems, and applications
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The handoff algorithms in the current generation of 802.11 networks are primarily reactive in nature, because they wait until the link quality degrades substantially to trigger a handoff. They further rely on instantaneous signal strength measurements when choosing the best AP. This approach leads to handoff delays on the order of 1-2 seconds that are unacceptable for delay sensitive applications such as VoIP. We propose a fundamentally new approach to handoffs that is based on continuous monitoring of wireless links. In our approach, a client measures the beacon strengths of all the APs operating on the current, and the overlapping channels, and makes its handoff decisions based on the long-term, and short-term trends in these signals. We show through experiments in a campus wireless network that our proposed algorithms result in more than 50% reduction in average handoff delays, while having the potential to improve overall user performance. Our algorithms have been implemented in today's hardware, and unlike other proposed roaming algorithms in the literature, need no infrastructure support.