Fuzzy Logic Based Handover Decision System

With the development of wireless communication technology, various wireless networks have been deployed. Heterogeneous networks will be dominant in the next generation wireless networks. In such networks, providing a seamless handoff by selecting the appropriate network is one of the key issues. In order to be always best connected for various applications, the network selection procedure, in heterogeneous multi-access environment during vertical handover decision is intended to choose the most suitable network for mobile user. In this paper, a handoff decision scheme is proposed that will help to choose the correct network and fuzzy logic is applied to deal with the imprecise information of some criteria and user preference. An algorithm is proposed in which the received signal strength is pre determined. The predetermination of received signal strength will help in reducing the call drop probability. The Sugeno Fuzzy Inference System is used for handover decision. The advantage of Sugeno Fuzzy Inference System is that it works well with linear techniques and mathematical analysis. Here Predetermined received signal strength, bandwidth and user’s preference are used as the parameters on which the handover decision depends. The simulation result shows that if the value of handoff decision is above the threshold value then process of handoff will occur.

[1]  Victor C. M. Leung,et al.  Optimal Distributed Vertical Handoff Strategies in Vehicular Heterogeneous Networks , 2011, IEEE Journal on Selected Areas in Communications.

[2]  Celal Ceken,et al.  An adaptive neuro-fuzzy based vertical handoff decision algorithm for wireless heterogeneous networks , 2010, 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[3]  Manoj Sharma,et al.  Pre Decision Based Handoff in Multi Network Environment , 2012 .

[4]  Manoj Sharma,et al.  AN INTELLIGENT HANDOVER DECISION SYSTEM FOR MULTINETWORK ENVIRONMENT , 2009 .

[5]  Aggeliki Sgora,et al.  An IMS-based network architecture for WiMAX-UMTS and WiMAX-WLAN interworking , 2011, Comput. Commun..

[6]  Manoj Sharma,et al.  An Intelligent Approach for Handover Decision in Heterogeneous Wireless Environment , 2011 .

[7]  Xu Haibo,et al.  A novel terminal-controlled handover scheme in heterogeneous wireless networks , 2010 .

[8]  Manoj Sharma,et al.  Intelligent Approach for Seamless Mobility in Multi Network Environment , 2011 .

[9]  Shih-Jung Wu.  Fuzzy-Based Handover Decision Scheme for Next-Generation Heterogeneous Wireless Networks , 2011 .

[10]  Keqiu Li,et al.  Seamless handoff scheme in Wi-Fi and WiMAX heterogeneous networks , 2010, Future Gener. Comput. Syst..

[11]  Duk Kyung Kim,et al.  A New Call Admission Control Scheme for Heterogeneous Wireless Networks , 2010, IEEE Transactions on Wireless Communications.

[12]  Chen He,et al.  A Novel Fuzzy Logic Vertical Handoff Algorithm with Aid of Differential Prediction and Pre-Decision Method , 2007, 2007 IEEE International Conference on Communications.