The widespread usage of SMS services in cellular systems and increasing number of service providers necessitates concerning of SMS QoS in these systems. This paper proposed six groups of telecommunication QoS and SMS QoS studies, groups are classified according to the objective, the objective of each group is as followes :group AQoS definitions, parameters and parameters computations, group BTe...

Global System for Mobile communications (GSM) is a popular mobile communications network. Short Message Service (SMS) is an easily adopted person-to-person communications technology for mobile devices. The GSM architecture allows for the insertion of mass application-generated SMS messages directly into the network infrastructure. This is achieved through a SMS Mobile Switching Centre (SMSC) us...