Smart-HOP: A Reliable Handoff Mechanism for Mobile Wireless Sensor Networks

Handoff processes, the events where mobile nodes select the best access point available to transfer data, have been well studied in cellular and WiFi networks. However, wireless sensor networks (WSN) pose a new set of challenges due to their simple low-power radio transceivers and constrained resources. This paper proposes smart-HOP, a handoff mechanism tailored for mobile WSN applications. This work provides two important contributions. First, it demonstrates the intrinsic relationship between handoffs and the transitional region. The evaluation shows that handoffs perform the best when operating in the transitional region, as opposed to operating in the more reliable connected region. Second, the results reveal that a proper fine tuning of the parameters, in the transitional region, can reduce handoff delays by two orders of magnitude, from seconds to tens of milliseconds.

[1]  Kishor S. Trivedi,et al.  Combined Guard Channel and Mobile-Assisted Handoff for Cellular Networks , 2008, IEEE Transactions on Vehicular Technology.

[2]  Philip Levis,et al.  The β-factor: measuring wireless link burstiness , 2008, SenSys '08.

[3]  Ian F. Akyildiz,et al.  Wireless sensor networks , 2007 .

[4]  Anis Koubaa,et al.  F-LQE: A Fuzzy Link Quality Estimator for Wireless Sensor Networks , 2010, EWSN.

[5]  Kishor S. Trivedi,et al.  Call admission control for reducing dropped calls in code division multiple access (CDMA) cellular systems , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[6]  Marco Zuniga,et al.  JamLab: Augmenting sensornet testbeds with realistic and controlled interference generation , 2011, Proceedings of the 10th ACM/IEEE International Conference on Information Processing in Sensor Networks.

[7]  Stathes Hadjiefthymiades,et al.  An adaptive location prediction model based on fuzzy control , 2011, Comput. Commun..

[8]  Tara Salih,et al.  Modeling and analysis of queuing handoff calls in single and two-tier cellular networks , 2006, Comput. Commun..

[9]  Heikki Karvonen,et al.  Soft handover method for mobile wireless sensor networks based on 6LoWPAN , 2011, 2011 International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS).

[10]  William A. Arbaugh,et al.  An empirical analysis of the IEEE 802.11 MAC layer handoff process , 2003, CCRV.

[11]  Vasos Vassiliou,et al.  S-GinMob: Soft-handoff solution for mobile users in industrial environments , 2011, 2011 International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS).

[12]  Xinbing Wang,et al.  Recursive analysis for soft handoff schemes in CDMA cellular systems , 2009, IEEE Transactions on Wireless Communications.

[13]  Yanghee Choi,et al.  SNC , 2005, ACM SIGMOBILE Mob. Comput. Commun. Rev..

[14]  Dirk Pesch,et al.  InRout - A QoS aware route selection algorithm for industrial wireless sensor networks , 2012, Ad Hoc Networks.

[15]  Chenyang Lu,et al.  Reliable clinical monitoring using wireless sensor networks: experiences in a step-down hospital unit , 2010, SenSys '10.

[16]  Cem Ersoy,et al.  Wireless sensor networks for healthcare: A survey , 2010, Comput. Networks.

[17]  Robert Tappan Morris,et al.  a high-throughput path metric for multi-hop wireless routing , 2003, MobiCom '03.

[18]  P. Levis,et al.  RSSI is Under Appreciated , 2006 .

[19]  Teng Joon Lim,et al.  Soft handoffs in CDMA mobile systems , 1997, IEEE Wirel. Commun..

[20]  William A. Arbaugh,et al.  Improving the latency of 802.11 hand-offs using neighbor graphs , 2004, MobiSys '04.

[21]  Anis Koubâa,et al.  On a Reliable Handoff Procedure for Supporting Mobility in Wireless Sensor Networks , 2010 .

[22]  Hua Qin,et al.  An integrated network of roadside sensors and vehicles for driving safety: Concept, design and experiments , 2010, 2010 IEEE International Conference on Pervasive Computing and Communications (PerCom).

[23]  Stefan Savage,et al.  SyncScan: practical fast handoff for 802.11 infrastructure networks , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[24]  Marco Zuniga,et al.  Link quality ranking: Getting the best out of unreliable links , 2011, 2011 International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS).

[25]  John M. Cioffi,et al.  Handover in multihop cellular networks , 2009, IEEE Communications Magazine.