-\contentsline {section}{\numberline {2.4}Conclusion}{50}{section.2.4}
-\contentsline {chapter}{\numberline {3}Evaluation Tools and Optimization Solvers}{53}{chapter.3}
-\contentsline {section}{\numberline {3.1}Introduction}{53}{section.3.1}
-\contentsline {section}{\numberline {3.2}Evaluation Tools}{53}{section.3.2}
-\contentsline {subsection}{\numberline {3.2.1}Testbed Tools}{54}{subsection.3.2.1}
-\contentsline {subsection}{\numberline {3.2.2}Simulation Tools}{55}{subsection.3.2.2}
-\contentsline {section}{\numberline {3.3}Optimization Solvers}{60}{section.3.3}
-\contentsline {section}{\numberline {3.4}Conclusion}{63}{section.3.4}
-\contentsline {part}{II\hspace {1em}Contributions}{65}{part.2}
-\contentsline {chapter}{\numberline {4}Distributed Lifetime Coverage Optimization Protocol in Wireless Sensor Networks}{67}{chapter.4}
-\contentsline {section}{\numberline {4.1}Introduction}{67}{section.4.1}
-\contentsline {section}{\numberline {4.2}Description of the DiLCO Protocol}{68}{section.4.2}
-\contentsline {subsection}{\numberline {4.2.1}Assumptions and Network Model}{68}{subsection.4.2.1}
-\contentsline {subsection}{\numberline {4.2.2}Primary Point Coverage Model}{69}{subsection.4.2.2}
-\contentsline {subsection}{\numberline {4.2.3}Main Idea}{70}{subsection.4.2.3}
-\contentsline {subsubsection}{\numberline {4.2.3.1}Information Exchange Phase}{71}{subsubsection.4.2.3.1}
-\contentsline {subsubsection}{\numberline {4.2.3.2}Leader Election Phase}{71}{subsubsection.4.2.3.2}
-\contentsline {subsubsection}{\numberline {4.2.3.3}Decision phase}{71}{subsubsection.4.2.3.3}
-\contentsline {subsubsection}{\numberline {4.2.3.4}Sensing phase}{71}{subsubsection.4.2.3.4}
-\contentsline {section}{\numberline {4.3}Primary Points based Coverage Problem Formulation}{72}{section.4.3}
-\contentsline {section}{\numberline {4.4}Simulation Results and Analysis}{74}{section.4.4}
-\contentsline {subsection}{\numberline {4.4.1}Simulation Framework}{74}{subsection.4.4.1}
-\contentsline {subsection}{\numberline {4.4.2}Modeling Language and Optimization Solver}{74}{subsection.4.4.2}
-\contentsline {subsection}{\numberline {4.4.3}Energy Consumption Model}{74}{subsection.4.4.3}
-\contentsline {subsection}{\numberline {4.4.4}Performance Metrics}{75}{subsection.4.4.4}
-\contentsline {subsection}{\numberline {4.4.5}Performance Analysis for Different Subregions}{76}{subsection.4.4.5}
-\contentsline {subsection}{\numberline {4.4.6}Performance Analysis for Primary Point Models}{82}{subsection.4.4.6}
-\contentsline {subsection}{\numberline {4.4.7}Performance Comparison with other Approaches}{87}{subsection.4.4.7}
-\contentsline {section}{\numberline {4.5}Conclusion}{93}{section.4.5}
-\contentsline {chapter}{\numberline {5}Multiround Distributed Lifetime Coverage Optimization Protocol in Wireless Sensor Networks}{95}{chapter.5}
-\contentsline {section}{\numberline {5.1}Introduction}{95}{section.5.1}
-\contentsline {section}{\numberline {5.2}MuDiLCO Protocol Description}{96}{section.5.2}
-\contentsline {subsection}{\numberline {5.2.1}Background Idea and Algorithm}{96}{subsection.5.2.1}
-\contentsline {section}{\numberline {5.3}Primary Points based Multiround Coverage Problem Formulation}{97}{section.5.3}
-\contentsline {section}{\numberline {5.4}Experimental Study and Analysis}{99}{section.5.4}
-\contentsline {subsection}{\numberline {5.4.1}Simulation Setup}{99}{subsection.5.4.1}
-\contentsline {subsection}{\numberline {5.4.2}Metrics}{100}{subsection.5.4.2}
-\contentsline {subsection}{\numberline {5.4.3}Results Analysis and Comparison }{101}{subsection.5.4.3}
-\contentsline {section}{\numberline {5.5}Conclusion}{106}{section.5.5}
-\contentsline {chapter}{\numberline {6}Perimeter-based Coverage Optimization to Improve Lifetime in Wireless Sensor Networks}{109}{chapter.6}
-\contentsline {section}{\numberline {6.1}Introduction}{109}{section.6.1}
-\contentsline {section}{\numberline {6.2}The PeCO Protocol Description}{110}{section.6.2}
-\contentsline {subsection}{\numberline {6.2.1}Assumptions and Models}{110}{subsection.6.2.1}
-\contentsline {subsection}{\numberline {6.2.2}The Main Idea}{113}{subsection.6.2.2}
-\contentsline {subsection}{\numberline {6.2.3}PeCO Protocol Algorithm}{113}{subsection.6.2.3}
-\contentsline {section}{\numberline {6.3}Perimeter-based Coverage Problem Formulation}{114}{section.6.3}
-\contentsline {section}{\numberline {6.4}Performance Evaluation and Analysis}{116}{section.6.4}
-\contentsline {subsection}{\numberline {6.4.1}Simulation Settings}{116}{subsection.6.4.1}
-\contentsline {subsection}{\numberline {6.4.2}Simulation Results}{117}{subsection.6.4.2}
-\contentsline {subsubsection}{\numberline {6.4.2.1}Coverage Ratio}{118}{subsubsection.6.4.2.1}
-\contentsline {subsubsection}{\numberline {6.4.2.2}Active Sensors Ratio}{118}{subsubsection.6.4.2.2}
-\contentsline {subsubsection}{\numberline {6.4.2.3}The Energy Consumption}{119}{subsubsection.6.4.2.3}
-\contentsline {subsubsection}{\numberline {6.4.2.4}The Network Lifetime}{119}{subsubsection.6.4.2.4}
-\contentsline {section}{\numberline {6.5}Conclusion}{122}{section.6.5}
-\contentsline {part}{III\hspace {1em}Conclusion and Perspectives}{123}{part.3}
-\contentsline {chapter}{\numberline {7}Conclusion and Perspectives}{125}{chapter.7}
-\contentsline {section}{\numberline {7.1}Conclusion}{125}{section.7.1}
-\contentsline {section}{\numberline {7.2}Perspectives}{126}{section.7.2}
-\contentsline {part}{Bibliographie}{141}{chapter*.11}
+\contentsline {section}{\numberline {2.4}Conclusion}{52}{section.2.4}
+\contentsline {chapter}{\numberline {3}Evaluation Tools and Optimization Solvers}{55}{chapter.3}
+\contentsline {section}{\numberline {3.1}Introduction}{55}{section.3.1}
+\contentsline {section}{\numberline {3.2}Evaluation Tools}{55}{section.3.2}
+\contentsline {subsection}{\numberline {3.2.1}Testbed Tools}{56}{subsection.3.2.1}
+\contentsline {subsection}{\numberline {3.2.2}Simulation Tools}{57}{subsection.3.2.2}
+\contentsline {section}{\numberline {3.3}Optimization Solvers}{62}{section.3.3}
+\contentsline {section}{\numberline {3.4}Conclusion}{65}{section.3.4}
+\contentsline {part}{II\hspace {1em}Contributions}{67}{part.2}
+\contentsline {chapter}{\numberline {4}Distributed Lifetime Coverage Optimization Protocol in Wireless Sensor Networks}{69}{chapter.4}
+\contentsline {section}{\numberline {4.1}Introduction}{69}{section.4.1}
+\contentsline {section}{\numberline {4.2}Description of the DiLCO Protocol}{70}{section.4.2}
+\contentsline {subsection}{\numberline {4.2.1}Assumptions and Network Model}{70}{subsection.4.2.1}
+\contentsline {subsection}{\numberline {4.2.2}Primary Point Coverage Model}{71}{subsection.4.2.2}
+\contentsline {subsection}{\numberline {4.2.3}Main Idea}{72}{subsection.4.2.3}
+\contentsline {subsubsection}{\numberline {4.2.3.1}Information Exchange Phase}{73}{subsubsection.4.2.3.1}
+\contentsline {subsubsection}{\numberline {4.2.3.2}Leader Election Phase}{73}{subsubsection.4.2.3.2}
+\contentsline {subsubsection}{\numberline {4.2.3.3}Decision phase}{73}{subsubsection.4.2.3.3}
+\contentsline {subsubsection}{\numberline {4.2.3.4}Sensing phase}{73}{subsubsection.4.2.3.4}
+\contentsline {section}{\numberline {4.3}Primary Points based Coverage Problem Formulation}{74}{section.4.3}
+\contentsline {section}{\numberline {4.4}Simulation Results and Analysis}{76}{section.4.4}
+\contentsline {subsection}{\numberline {4.4.1}Simulation Framework}{76}{subsection.4.4.1}
+\contentsline {subsection}{\numberline {4.4.2}Modeling Language and Optimization Solver}{76}{subsection.4.4.2}
+\contentsline {subsection}{\numberline {4.4.3}Energy Consumption Model}{76}{subsection.4.4.3}
+\contentsline {subsection}{\numberline {4.4.4}Performance Metrics}{77}{subsection.4.4.4}
+\contentsline {subsection}{\numberline {4.4.5}Performance Analysis for Different Subregions}{78}{subsection.4.4.5}
+\contentsline {subsection}{\numberline {4.4.6}Performance Analysis for Primary Point Models}{84}{subsection.4.4.6}
+\contentsline {subsection}{\numberline {4.4.7}Performance Comparison with other Approaches}{89}{subsection.4.4.7}
+\contentsline {section}{\numberline {4.5}Conclusion}{95}{section.4.5}
+\contentsline {chapter}{\numberline {5}Multiround Distributed Lifetime Coverage Optimization Protocol in Wireless Sensor Networks}{97}{chapter.5}
+\contentsline {section}{\numberline {5.1}Introduction}{97}{section.5.1}
+\contentsline {section}{\numberline {5.2}MuDiLCO Protocol Description}{98}{section.5.2}
+\contentsline {subsection}{\numberline {5.2.1}Background Idea and Algorithm}{98}{subsection.5.2.1}
+\contentsline {section}{\numberline {5.3}Primary Points based Multiround Coverage Problem Formulation}{99}{section.5.3}
+\contentsline {section}{\numberline {5.4}Experimental Study and Analysis}{101}{section.5.4}
+\contentsline {subsection}{\numberline {5.4.1}Simulation Setup}{101}{subsection.5.4.1}
+\contentsline {subsection}{\numberline {5.4.2}Metrics}{102}{subsection.5.4.2}
+\contentsline {subsection}{\numberline {5.4.3}Results Analysis and Comparison }{103}{subsection.5.4.3}
+\contentsline {section}{\numberline {5.5}Conclusion}{108}{section.5.5}
+\contentsline {chapter}{\numberline {6}Perimeter-based Coverage Optimization to Improve Lifetime in Wireless Sensor Networks}{111}{chapter.6}
+\contentsline {section}{\numberline {6.1}Introduction}{111}{section.6.1}
+\contentsline {section}{\numberline {6.2}The PeCO Protocol Description}{112}{section.6.2}
+\contentsline {subsection}{\numberline {6.2.1}Assumptions and Models}{112}{subsection.6.2.1}
+\contentsline {subsection}{\numberline {6.2.2}The Main Idea}{115}{subsection.6.2.2}
+\contentsline {subsection}{\numberline {6.2.3}PeCO Protocol Algorithm}{115}{subsection.6.2.3}
+\contentsline {section}{\numberline {6.3}Perimeter-based Coverage Problem Formulation}{116}{section.6.3}
+\contentsline {section}{\numberline {6.4}Performance Evaluation and Analysis}{118}{section.6.4}
+\contentsline {subsection}{\numberline {6.4.1}Simulation Settings}{118}{subsection.6.4.1}
+\contentsline {subsection}{\numberline {6.4.2}Simulation Results}{119}{subsection.6.4.2}
+\contentsline {subsubsection}{\numberline {6.4.2.1}Coverage Ratio}{120}{subsubsection.6.4.2.1}
+\contentsline {subsubsection}{\numberline {6.4.2.2}Active Sensors Ratio}{120}{subsubsection.6.4.2.2}
+\contentsline {subsubsection}{\numberline {6.4.2.3}The Energy Consumption}{121}{subsubsection.6.4.2.3}
+\contentsline {subsubsection}{\numberline {6.4.2.4}The Network Lifetime}{121}{subsubsection.6.4.2.4}
+\contentsline {section}{\numberline {6.5}Conclusion}{124}{section.6.5}
+\contentsline {part}{III\hspace {1em}Conclusion and Perspectives}{125}{part.3}
+\contentsline {chapter}{\numberline {7}Conclusion and Perspectives}{127}{chapter.7}
+\contentsline {section}{\numberline {7.1}Conclusion}{127}{section.7.1}
+\contentsline {section}{\numberline {7.2}Perspectives}{128}{section.7.2}
+\contentsline {part}{Bibliographie}{144}{chapter*.11}
