Patent ID: 9014675
Filing Date: 2015-04-21
Classification: H04L,H04W

Abstract:
1. A method of providing a presence service for a first presentity at a client device, wherein the client device offers at least one communication service through which a user of the client device can be contacted, the method comprising: making a determination about whether the first presentity is in a display state, wherein the first presentity is in the display state when presence access logic is activated; detecting a state change between a state in which the communication service is in use to a state in which the communication service is not in use; and if the first presentity is in an active session with a presence server, transmitting to the presence server a report of the state change from the client device; and if the first presentity is not in an active session with the presence server and has at least one active watcher, receiving a prompt from the presence server to enter an active session and to report an updated presence state to the presence server, wherein during the active session with the presence server, the first presentity receives up-to-date presence information about presentities the first presentity is watching and the first presentity sends up-to-date presence information of the first presentity to the presence server.