The Effects of QoS Level Degradat ion Cost on Provider Selection and Task Allocation Model in Telecommunication Networks

Abstract

Firms acquire network capacity from mu ltiple suppliers which offer different Quality of Service (QoS) levels. After acquisition, day-to-day operations such as video conferencing, voice ove r IP and data applicati ons are allocated between these acquired capacities by considering QoS requireme nt of each operation. In optimal allocation scheme, it is generally assumed each operation has to be placed into resource that provides equal or highe r QoS Level. Convers ely, in this study it is showed that former allocation stra tegy may lead to suboptimal solutions depending upon penalty cost policy to char ge degradation in QoS requirements. We model a cost minimization problem which includes three cost components namely capacity acquisition, opportunity and penalty due to loss in QoS