Patent ID: 8112080

Claim:
A method of providing a broadcast/multicast (BCAST) service that is defined according to an Open Mobile Alliance (OMA) standard when a terminal roams to a visiting network, the method comprising: providing, by a BCAST service distribution/adaptation (BSDA) unit of the visiting network, a BCAST service guide to the terminal, the BCAST service guide being defined in the OMA standard; receiving, by a BCAST subscription management (BSM) unit of the visiting network, a request from the terminal to access at least one BCAST service, that is supported by the OMA standard, based on the service guide; transmitting, by the BSM unit of the visiting network, a service authorization request to a BSM unit of a home network of the terminal; receiving, by the BSM unit of the visiting network, a service authorization response from the BSM unit of the home network in response to the service authorization request; transmitting, by the BSM unit of the visiting network, at least one rights object (RO) for accessing, according to the OMA standard, the at least one BCAST service to the terminal, wherein the at least one RO includes a key or code used to open or decrypt contents of the at least one BCAST service; and providing, by the BSDA unit of the visiting network, the at least one BCAST service according to the OMA standard to the terminal.