Institute for Systems Research University of Maryland College Park MD 20742 E mail austin vahid baras isr umd edu Three objectives for this talk 0 1 4232 4 Follow well defined procedure for problem definition and generation evaluation and optimization of solutions Hierarchical component assembly Active object framework Pathway of data traversal in a network of connected subcomponents Each sub component has its own behavior Component behavior corresponds to hierarchies and networks of concurrent threaded behaviors Issues proper coordination of process behaviors avoiding deadlocks preventing unsafe behaviors guaranteeing progress 1 0 2 Inputs components design parameters sensitivity analysis optimization Key ideas The Optimized Link State Routing OLSR Protocol is developed for Ad hoc Networks It operates as a table driven and proactive protocol It exchanges topology information with other nodes of the network regularly Main routing sub components Neighborhood Discovery Component NDC Selector of Topology Information to Disseminate Component STIDC Topology Dissemination Component TDC Route Selection Component RSC Two important requirements Observations This is an optimization problem Initial topology Trajectories Guiding Tenet Future Wireless Ad hoc Networks will be designed using a combination of top down and bottom up strategies and managed within a platform infrastructure Systems Engineering Challenges Organization of requirements and design abstractions separation of design concerns formal representation of components and interfaces composable attributes and behavior Complex objects have multiple interaction points i e ports Each port will be dedicated to a specific purpose and present and interface appropriate to that purpose the pre and postconditions and satisfaction of the input requirements constitute a contract