Patent ID: 8954066
Filing Date: 2015-02-10
Classification: H04W

Abstract:
1. A method of transmitting information related to a multicast service in a mobile telecommunications network, the method comprising: determining whether the network supports multicast service reception for a user terminal in a UMTS Terrestrial Radio Access Network (UTRAN) Registration Area Paging Channel (URA_PCH) state; transmitting ATTACH messages from a serving radio network controller to all drift radio network controllers having cells in a registration area in which the user terminal is present, the ATTACH messages requesting provision of consistent service availability information to all of the cells for one or more multicast services available in the registration area in which the user terminal in the URA_PCH state is present; and providing the consistent service availability information for the one or more multicast services from the all drift radio network controllers to all of the cells of the registration area by using the ATTACH messages, the consistent service availability information being provided to all of the cells for indicating whether each of the one or more multicast services are available.