AN EFFICIENT VERTICAL HANDOFF MECHANISM FOR

FUTURE MOBILE NETWORK UNDER THE GUIDANCE BATCH MEMBERS OF Mr.R.GANESAN BASIL JOHN 11TC0214ASSISTANT PROFFESOR ABHIJITH.S 11TC0202DEPT. OF ECE PRAVEEN KUMAR 11TCL018BCET MAHATHIR ALI 11TC0235

Project Review -7 April, 2015

PRESENTATION OUTLINE Introduction Objectives Abstract Tool used Terms related to project Literature Survey Existing Methods Proposed system References

INTRODUCTION• Wireless technologies such as UMTS, WLAN, WiMAX, etc.

were developed with different standards and these technologies offer variety of services. • One of the forthcoming challenge in network management is to

establish connection between end to end heterogeneous wireless networks.• If the serving and target base station during Handover are of

different wireless technologies (WLAN-WiMax) , then we are in need of Vertical handoff.

OBJECTIVE

●Comparing vertical Handoff by using Fuzzy Vertical Handoff decision algorithm and RSS algorithms●A dynamic decision model is to make the right vertical handoff decisions by determining the “best network” at “best” time among available networks

ABSTRACT

•Handoff is the mechanism that transfers an ongoing call from one cell to another cell. • Improper Handoff’s is mainly avoided by taking Fuzzy

decisions.• The results of Relative signal strength and Fuzzy vertical

Handoff decision vector is compared and to estimate the method which produces less number of Handoff’s.

TOOL USED

● MATLAB● OPNET (Optimized Network Engineering Tools)

TERMS RELATED TO PROJECT

•Handoff•Vertical Handoff.• Relative signal Strength• Fuzzy Logic• Traditional Algorithms • Dynamic programming• Multi Attribute Decision Making • Fuzzy Inference System

HANDOFF MECHANISMHandoff is the mechanism that transfers an ongoing call from one cell to another as a user moves through the coverage area of a cellular system.

Handoff must be:Performed quickly Performed infrequentlyImperceptible to usersPerformed successfully

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TYPES OF HANDOFF

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FUZZY-LOGIC Fuzzy logic acts as Multiple Attribute Decision Making (MADM) method is not only to evaluate and combine many parameters at the same time but also to deal with some imprecise information.

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LITERATURE SURVEYSl no Title Author

Journal & Year of

Publication Inference

1A Traveling Distance Prediction Based Method to Minimize Unnecessary Handovers from Cellular Networks to WLANs

Xiaohuan Yan,N. Mani and Y. A.Cekercioglu.

Communications Letters, IEEE, vol. 12, pp. 14-16, 2008.

Prediction based Method Handoff

2 A survey of mobility management in next generation all-IP-based wireless systems

F. Akyildiz, Jiang Xie and S. Mohanty

IEEE, vol. 11, pp. 16-28, 2004.

Mobility Management in next generation IP Based wireless system.

3 Interference aware vertical handoff decision algorithm for quality of service support in wireless heterogeneous networks

C. Çeken, S. Yarkan and H. Arslan

Computer Networks, vol. 54, pp. 726-740, 4/8, 2010.

VHD Algorithm for Better Qos.

LITERATURE SURVEY contd… .Sl no Title Author

Journal & Year of

Publication Inference

4 Terminal-Controlled Mobility Management in Heterogeneous Wireless Networks

Q.Nguyen-Vuong, N. Agoulmine and Y. Ghamri-Doudane

Communications Magazine, IEEE, vol. 45, pp. 122-129, 2007

Mobility Management in Heterogenous Wireless network.

5 Evolution and emerging issues in mobile wireless networks

S. Dekleva, J. P. Shim, U. Varshney andG. Knoerzer

Commun ACM, vol. 50, pp. 38-43, June, 2007.

Trends in various New Generation system for mobile communication

6 The future of mobile wireless communication networks

Xichun Li, A. Gani, R. Salleh and O. Zakaria

ICCSN '09. International Conference on, 2009, pp. 554-557.

Various Trends in new generation system for mobile communication.

7 Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes

M. Bernaschi, F. Cacace, G. lannello and M. Vellucci

IEEE Transactions on, vol. 6, pp. 1035-1047, 2007.

Adaptive schemes in VoIP over Hetrogeneous networks.

LITERATURE SURVEY contd…Sl no Title Author

Journal & Year of Publication Inference

8 Mobility using IEEE 802.21 in a heterogeneous IEEE 802.16/802.11-based, IMT-advanced (4G) network

L. Eastwood, S. Migaldi, Qiaobing Xie and V. Gupta

Wireless Communications, IEEE, vol. 15, pp. 26-34, 2008

Study of Mobility Management in Wi-fi, LTE, Wimax Networks.

9 Quality-of-service provisioning system for multimedia transmission in IEEE 802.11 wireless LANs

Der-Jiunn Dengand Hsu-Chun Yen

IEEE Journal on, vol. 23, pp. 1240-1252, 2005.

Study of Qos in Multimedia transmission over Wi-fi Networks.

10Mobile WiMAX systems: performance and evolution

Fan Wang, A.Ghosh, C.Sankaran, P. Fleming, F. Hsieh and S. Benes

CommunicationsMagazine, IEEE, vol. 46, pp. 41-49, 2008

Performance evaluation

11Media-independent handover for seamless service provision in heterogeneous networks

G. Lampropoulos, A. K. Salkintzis and N. Passas

Communications Magazine, IEEE, vol. 46, pp. 64-71, 2008.

HETEROGENEOUS NETWORK SCENARIO

HANDOFF MANAGEMENTThere are three phase in course of Handoff :

FLOW DIAGRAM OF VERTICAL HANDOFF DECISION ALGORITHM

START

CALCULATE FUZZY MEMBERSHIP FUNCTIONS

CALCULATE STANDARD DEVIATION AND WEIGHT VECTOR

CALCULATE FUZZY VERTICAL HANDOFF DECISION VECTOR

FFIND THE B.S WITH HIGH FVHD VALUE AND CHANGE MT TO

THAT B.S

STOP

INITIALIZE THRESHOLD VALUES

HANDOFF DECISION ALGORITHM FLOWCHART

EXISTING METHODS RELATIVE SIGNAL STRENGTH(RSS)

The performance of the handoff algorithm is based on Relative Signal Strength (RSS) metrics. In which the signal strength of neighbouring Base Stations are compared and handoff is enabled.

Drawbacks:

•Too many unnecessary Handoffs.• Call drops occur frequently.• Ping-Pong Effect

COMPARITIVE STUDY OF EXISTING METHODS

ALGORITHMS APPLICABLE NETWORK

INPUT PARAMETERS

HANDOVER TARGET

RSS based VHD Heterogeneous Network RSS Network with Stable RSS

Bandwidth based VHD Heterogeneous Network Bandwidth, RSS Network with highest Bandwidth

Cost function based VHD Heterogeneous Network Cost, Bandwidth and security

Network with highest overall performance

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PROPOSED SYSTEM

●Vertical handoff algorithm is used which checks “Fuzzy vertical handoff decision (FVHD)” value. ●By Observing FVHD Value, unnecessary Handoff decisions can be drastically reduced.●Handoff takes place if the current signal is weak (less than the threshold) and the other is strongest of the two.●The mobile will delay the handoff until the current signal will crosses the threshold.

PARAMETER REQUIRED FOR HANDOFF

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OUTPUT Wimax Delay

Wimax Load

Wimax Throughput

UMTS Delay

UMTS Throughput

UMTS Load

ADVANTAGES OF FVHD

Decrease the Probability of call drop.Better QoSFastAvoid Unnecessary Handoff.

CONCLUSION

●For future wireless communication,vertical handoff will be efficient. ●Research should take place in order to minimize the handoff overheads

like delays, connection drops and packet losses, both in case of intra and inter-technology handoff scenario.

REFERENCE

• Xiaohuan Yan, N. Mani and Y. A. Cekercioglu, "A Traveling Distance Prediction Based Method to Minimize Unnecessary Handovers from Cellular Networks to WLANs," Communications Letters, IEEE, vol. 12, pp. 14-16, 2008. • I. F. Akyildiz, Jiang Xie and S. Mohanty, "A survey of mobility management in

nextgeneration all-IP-based wireless systems," Wireless Communications, IEEE, vol. 11, pp. 16-28, 2004. • C. Çeken, S. Yarkan and H. Arslan, "Interference aware vertical handoff decision

algorithm for quality of service support in wireless heterogeneous networks," Computer Networks, vol. 54, pp. 726-740, 4/8, 2010. • S. Dekleva, J. P. Shim, U. Varshney and G. Knoerzer, "Evolution and emerging

issues in mobile wireless networks," Commun ACM, vol. 50, pp. 38-43, June, 2007. • Q.Nguyen-Vuong, N. Agoulmine and Y. Ghamri-Doudane, "Terminal-Controlled

Mobility Management in Heterogeneous Wireless Networks," Communications Magazine, IEEE, vol. 45, pp. 122-129, 2007.

REFERENCES (cont……)• M. Bernaschi, F. Cacace, G. lannello and M. Vellucci, "Mobility

Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes," Mobile Computing, IEEE Transactions on, vol. 6, pp. 1035-1047, 2007. • L. Eastwood, S. Migaldi, Qiaobing Xie and V. Gupta, "Mobility using IEEE

802.21 in a heterogeneous IEEE 802.16/802.11-based, IMT-advanced (4G) network," Wireless Communications, IEEE, vol. 15, pp. 26-34, 2008. • K. V. S. S. S. S. Sairam, N. Gunasekaran and S. R. Redd, "Bluetooth in

wireless communication," Communications Magazine, IEEE, vol. 40, pp. 90-96, 2002. • Der-Jiunn Deng and Hsu-Chun Yen, "Quality-of-service provisioning

system for multimedia transmission in IEEE 802.11 wireless LANs," Selected Areas in Communications, IEEE Journal on, vol. 23, pp. 1240-1252, 2005.

THANK YOU