A IEEE 802.21 Handover design with QOS provision across WLAN and WMAN

The seamless internetworking among multiple heterogeneous networks is in demand to provide ldquoalways-onrdquo connectivity services with QoS provision quality, anywhere, anytime. The hybrid networks of WLAN and WMAN can provide high data rate and enhanced multimedia services, but it is challenging to obtain optimized handover decision based dynamic QoS information. The IEEE 802.21 aims at providing a framework that defines media independent handover (MIH) mechanism that supports seamless handover across heterogeneous networks. In this paper, we propose a MADM handover decision algorithm with QOS provision across WLAN and WMAN. The simulation results show that the proposed algorithm provides smaller handover times and lower dropping rate than basic vertical handover methods.

[1]  Vincent W. S. Wong,et al.  Comparison between Vertical Handoff Decision Algorithms for Heterogeneous Wireless Networks , 2006, 2006 IEEE 63rd Vehicular Technology Conference.

[2]  Janise McNair,et al.  Multiservice Vertical Handoff Decision Algorithms , 2006, EURASIP J. Wirel. Commun. Netw..

[3]  Ian F. Akyildiz,et al.  A Cross-Layer (Layer 2 + 3) Handoff Management Protocol for Next-Generation Wireless Systems , 2006, IEEE Transactions on Mobile Computing.

[4]  Helen J. Wang,et al.  Policy-enabled handoffs across heterogeneous wireless networks , 1999, Proceedings WMCSA'99. Second IEEE Workshop on Mobile Computing Systems and Applications.

[5]  A. Gravey,et al.  IROISE: a new QoS architecture for IEEE 802.16 and IEEE 802.11e interworking , 2005, 2nd International Conference on Broadband Networks, 2005..

[6]  Ahmed H. Zahran,et al.  Signal threshold adaptation for vertical handoff in heterogeneous wireless networks , 2006, Mob. Networks Appl..