Canny边缘检测与 基于颜色的区域分割.ppt

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1、Applications of Automatic Control Methods in Wireless Networks,Wireless Communications and Networking Project,5090309098 Liu Ran,Outline,MotivationWorking ProcedureAutomatic Control MethodsApplications in Wireless SystemsConclusions,Outline,MotivationWorking ProcedureAutomatic Control MethodsApplica

2、tions in Wireless SystemsConclusions,Motivation,Wireless Networks have some features that are difficult to handle, resources cannot be fully utilized, etcAutomatic control methods are mature, and sometimes suitable for the models of wireless networks,Outline,MotivationWorking ProcedureAutomatic Cont

3、rol MethodsApplications in Wireless SystemsConclusions,Working Procedure,Collection of automatic control methodsSystematic classificationSearch for papers where automatic control methods are applied to solve wireless communicaiton problemsSummarize problems that can be solved by specific automatic m

4、ethods.,Outline,MotivationWorking ProcedureAutomatic Control MethodsApplications in Wireless SystemsConclusions,Automatic Control Methods,Classic Automatic Control Methods:Root locus method, Frequency response method, PID, etc.(Not common in recent research)Modern Automatic Control Methods:Intellige

5、nce Algorithm:Machine Learning, Fuzzy Logic, Artifical Neural Network, etc.(Focus)Robust Control, Distributed Control, Adaptive Control,etc.(Too widely used),Outline,MotivationWorking ProcedureAutomatic Control MethodsApplications in Wireless SystemsConclusions,An Example:Fuzzy Logic,For example, a

6、simple temperature regulator that uses a fan might look like this:IF temperature IS very cold THEN stop fan IF temperature IS cold THEN turn down fan IF temperature IS normal THEN maintain level IF temperature IS hot THEN speed up fan,A simple example:IF temperature IS very cold THEN stop fan IF tem

7、perature IS cold THEN turn down fan IF temperature IS normal THEN maintain level IF temperature IS hot THEN speed up fan,NOT x = (1 - truth(x) x AND y = minimum(truth(x), truth(y) x OR y = maximum(truth(x), truth(y),An Example: Vertical Handover,Situation: Vertical Handover between Macrocell and Mic

8、rocellHorizontal Handover: Mainly based on power strengthShortcomings: factors considered are limitedDeploying Fuzzy Logic: Take other factors into considerationImprovement,Outline,MotivationWorking ProcedureAutomatic Control MethodsApplications in Wireless SystemsConclusions,Conclusion,WHAT PROBLEM

9、S CAN BE SOLVED BY AUTOMATIC CONTROL METHODS?Machine Learning:Network Selection1, Load Balancing2, Interference Mitigation3,etc.(8 in total)Fuzzy Logic:Handover(Vertical or Horizontal )4, Channal Borrowing Scheme5, Load Balancing6, etc.(5 in total)Etc.(7 in total),1 L. Saker, S. Ben Jemaa and S. E.

10、Elayoubi, Q-learning for joint access decision in heterogeneous networks，WCNC, 2009, IEEE.2Minsoo Lee; Xiaohui Ye; Marconett, D.; Johnson, S.; Vemuri, R.; Ben Yoo, S.J.; , Autonomous Network Management Using Cooperative Learning for Network-Wide Load Balancing in Heterogeneous Networks,Global Teleco

11、mmunications Conference, 2008. IEEE GLOBECOM 2008. IEEE, vol., no., pp.1-5, Nov. 30 2008-Dec. 4 20083Learning based mechanisms for interference mitigation in self-organized femtocell networks ,Nazir, M. ,Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar C

12、onference on4Nishith D. Tripathi, Jeffrey H. Reed, Hugh F. VanLandingham, ADAPTIVE HANDOFF ALGORITHMS FOR CELLULAR OVERLAY SYSTEMS USING FUZZY LOGIC, Vehicular Technology Conference, 1999 IEEE 49th Volume: 25 P. Munoz, R. Barco, I. de la Bandera, M. Toril and S. Luna-Ramrez, Optimization of a Fuzzy

13、Logic Controller for Handover-based Load Balancing, Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd6 P. Munoz, R. Barco, I. de la Bandera, M. Toril and S. Luna-Ramrez, Optimization of a Fuzzy Logic Controller for Handover-based Load Balancing, Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd,Conclusions,Automatic control methods are widely used in the domain of Wireless Communicaiton, they help to improve the network performance.In the future, as the development of automatic control methods, we can predict that they can better help the wireless networks.,Thank You!,