permutar informações de presença em uma rede de comunicações

The disclosure relates to decentralized presence management within a communications system performed at a user device. An embodiment of the disclosure comprises selectively updating at least one frequency at which the user device transmits presence update messages to one or more other user devices that belong to a contact group associated with the user device. The embodiment further comprises transmitting one or more presence update messages in accordance with the selectively updated frequency. Another embodiment of the disclosure comprises obtaining a subset of contacts of a subscriber operating the user device that form a presence update group. The embodiment further comprises identifying a plurality of sub-groups within the presence update group based on priorities of the subset of contacts. The embodiment further comprises transmitting one or more presence update messages to less than all of the identified plurality of sub-groups.