Analysis of handoff in a location-aware vertical multi-access network
Computer Networks: The International Journal of Computer and Telecommunications Networking - Wireless IP through integration of wireless LAN and cellular networks
Performance analysis of an adaptive handoff algorithm based on distance information
Computer Communications
Latent Handover: A flow-oriented progressive handover mechanism
Computer Communications
New vertical handoff algorithm based on hysteretic level
ICAIT '08 Proceedings of the 2008 International Conference on Advanced Infocomm Technology
Analysis of handoff in a location-aware vertical multi-access network
Computer Networks: The International Journal of Computer and Telecommunications Networking - Wireless IP through integration of wireless LAN and cellular networks
A speed sensitive vertical handoff algorithm based on fuzzy control
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
On Demand Connectivity Sharing: Queuing management and load balancing for User-Provided Networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Improving handoff performance by using distance-based dynamic hysteresis value
APNOMS'06 Proceedings of the 9th Asia-Pacific international conference on Network Operations and Management: management of Convergence Networks and Services
Robust extended Kalman filter based technique for location management in PCS networks
Computer Communications
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The design of hard handoff algorithms based on optimizing the tradeoff between link quality and rate of handoffs is considered. For handoff algorithms based on this criterion, adaptation is precisely defined in terms of remaining on a locus of desirable operating points as system parameters (such as mobile velocity) change. A rule based on a linear cost criterion is used to select desirable operating points. For this rule, it is shown that the optimal handoff algorithm, which is impractical, is easily adapted by fixing a single tradeoff parameter at an appropriate value. The same adaptation property is shown to hold for an easily implementable approximation to the optimal algorithm, the locally optimal (LO) handoff algorithm. This is in contrast to the poor adaptation of hysteresis based approaches which require lookup tables for adaptation. Practical estimators for all relevant system parameters based on a short window of pilot signal strength measurements are also discussed. It is shown that the LO algorithm adapts well when these simple estimators are used. A hysteresis-threshold approximation to the adaptive LO algorithm is also developed