Method for performing transfer of collaborative session control in wireless communication system based on internet protocol multimedia subsystem

摘要

A method for performing inter-user equipment (UE) transfer (IUT) of collaborative session control performed by a UE in a network system based on an Internet protocol (IP) multimedia subsystem (IMS) is provided. The method includes transmitting to an IMS network element a subscription message for requesting notification of information regarding other UE, receiving from the IMS network element a subscription acceptance message in response to the subscription message, receiving from the IMS network element a notification message comprising information regarding at least one different UE, and if a UE for transferring the collaborative session control is selected by the at least one different UE, performing a process of transferring the collaborative session control to the selected UE. A signaling overhead caused by a failure in the transfer of collaborative session control can be reduced.

主权项

1. A method for performing inter-user equipment (UE) transfer (IUT) of a collaborative session, the method performed by a UE and comprising:
transmitting, by the UE, a subscription message to a network element for requesting notification of information regarding at least one or more other UEs; receiving, by the UE and from the network element, a subscription acceptance message in response to the subscription message; receiving, by the UE and from the network element, a notification message, wherein the notification message includes information regarding the at least one or more other UEs and a controller UE capability for controlling the collaborative session; selecting a UE capable of being a controller UE, to which control with respect to the collaborative session is to be transferred, based on the controller UE capability; and performing a process of transferring control with respect to the collaborative session established with a remote party to the selected UE, regardless of transferring the collaborative session to the selected UE.