Designing And Analysing Of Operational Load Of The Presence Service In IMS

Abstract

The presence in contrast to instant messag- ing (IM) is a dynamic user profile that is visible to others and shares information about itself. It can be represented through statuses that are perceived by other users of the service. Status includes personal infor- mation, information about the device, location, type of terminal device or preferred way of contacting the user (messages / video / call). This information is al- ways linked to the person concerned. The presence ser- vice uses the SIP (Session Initiation Protocol) protocol, which manages presence information and determines how it is used (for example, who can see the presence information and to what extent) and is designed for a wide range of applications. The article describes a new way of analysing operational load in the presence service based on mathematical expressions. The whole concept is derived from the Markov chain. The traffic load simulations described in this paper have shown that NOTIFY messages have a higher quantity than other system messages and increase over time. This can lead to server overload and data loss [1] [2].