Patent ID: 8731592
Filing Date: 2014-05-20
Classification: H04W

Abstract:
1. A method for transmitting service availability information in a mobile communication system, the method comprising: determining a plurality of cells capable of serving a particular MBMS (Multimedia Broadcast/Multicast Service); selectively transmitting a paging message to all UEs (User Equipments) in the plurality of cells capable of serving the particular MBMS; receiving an RRC (Radio Resource Control) connection setup request from at least one of the UEs in an idle mode requesting to receive the particular MBMS; counting a number of the at least one of the UEs; setting a service identifier indicating the particular MBMS which is being served or can be served in each cell when the at least one of the UEs requests the particular MBMS; setting information related to PtM (Point-to-Multipoint) or PtP (Point-to-Point) to the UEs positioned in the plurality of cells to which the particular MBMS is available, based on the counted number of the at least one of the UEs; setting MBMS RB (Radio Bearer) information including a logical channel, a transport channel, and a physical channel for the particular MBMS according the information related to the PtM or the PtP to the UEs positioned in the plurality of cells to which the particular MBMS is available; setting information regarding a session start for the particular MBMS; generating a service availability message including the service identifier, the information related to the PtM or the PtP, the MBMS RB information, and the information regarding the session start for the particular MBMS; periodically transmitting, on an MCCH (MBMS control channel), the service availability message regarding at least the particular MBMS, which is available in the plurality of cells, to the at least one of the UEs in the plurality of cells capable of serving the particular MBMS; and transmitting the particular MBMS based on the MCCH.