טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentNudelman Ilia
SubjectDependent UFP On a Shared Channel With Application to a
Network Centric Operation
DepartmentDepartment of Computer Science
Supervisor Professor Reuven Cohen
Full Thesis textFull thesis text - English Version


Abstract

In this thesis we generalize the well-known 0-1 Unsplittable Flow Problem (UFP) and show its applicability to the emerging Network Centric Operations (NCO) concept. While UFP's goal is to maximize the profit gained by accommodating independent flows, our generalization considers dependent flows. In the generalized problem, referred to as the Dependent Unsplittable Flow Problem (D-UFP), the profit from delivering two flows is not necessarily equal to the sum of their profits. We show that in a single channel NCO, D-UFP can be approximated as the Quadratic Knapsack Problem (QKP). We present new algorithms for QKP, and examine their performance in typical NCO scenarios. Our simulation study shows that when the dependency between flows is taken into account, the performance of a typical NCO scenario can increase by 10-100%.