A method for use by an apparatus of a communication network, the method comprising: performing processing for a group message to be sent to a plurality of devices, the group message including an application layer content and a group identification identifying the plurality of devices; performing communication for sending the group message to the plurality of devices by using a protocol for enabling sending the group message in broadcast data to the plurality of devices, wherein the protocol enables sending the group message in multimedia broadcast/multicast service data or cell broadcast service data to the plurality of devices, wherein at least the application layer content and group identification of the group message are communicated via an inter-domain control plane interface, wherein the group message further includes information on a location area and/or a radio access technology in which the group message is to be distributed, wherein the communication comprises: receiving a group message trigger request including at least the group identification and the application layer content via the inter-domain control plane interface for triggering a session start request for the group message according to a multimedia broadcast/multicast service; upon receiving the group message trigger request, obtaining serving node addresses and international mobile subscriber identities for the plurality of devices; including the group identification, the application layer content and serving node addresses in a session request; and sending the session request via at least one dedicated interface, and wherein the communication further comprises: determining serving nodes from the serving node address information included in the session request and/or the multimedia broadcast/multicast service area information included in the session request and/or by querying a home subscription server; sending (A4a, A4b) a session start request to the determined serving nodes to establish a multimedia broadcast/multicast service session; and providing the application layer content via IP multicast to base stations which join the multimedia broadcast/multicast service session. performing processing for a group message to be sent to a plurality of devices, the group message including an application layer content and a group identification identifying the plurality of devices; performing communication for sending the group message to the plurality of devices by using a protocol for enabling sending the group message in broadcast data to the plurality of devices, wherein the protocol enables sending the group message in multimedia broadcast/multicast service data or cell broadcast service data to the plurality of devices, wherein at least the application layer content and group identification of the group message are communicated via an inter-domain control plane interface, wherein the group message further includes information on a location area and/or a radio access technology in which the group message is to be distributed, wherein the communication comprises: receiving a group message trigger request including at least the group identification and the application layer content via the inter-domain control plane interface for triggering a session start request for the group message according to a multimedia broadcast/multicast service; upon receiving the group message trigger request, obtaining serving node addresses and international mobile subscriber identities for the plurality of devices; including the group identification, the application layer content and serving node addresses in a session request; and sending the session request via at least one dedicated interface, and receiving a group message trigger request including at least the group identification and the application layer content via the inter-domain control plane interface for triggering a session start request for the group message according to a multimedia broadcast/multicast service; upon receiving the group message trigger request, obtaining serving node addresses and international mobile subscriber identities for the plurality of devices; including the group identification, the application layer content and serving node addresses in a session request; and sending the session request via at least one dedicated interface, and wherein the communication further comprises: determining serving nodes from the serving node address information included in the session request and/or the multimedia broadcast/multicast service area information included in the session request and/or by querying a home subscription server; sending (A4a, A4b) a session start request to the determined serving nodes to establish a multimedia broadcast/multicast service session; and providing the application layer content via IP multicast to base stations which join the multimedia broadcast/multicast service session. determining serving nodes from the serving node address information included in the session request and/or the multimedia broadcast/multicast service area information included in the session request and/or by querying a home subscription server; sending (A4a, A4b) a session start request to the determined serving nodes to establish a multimedia broadcast/multicast service session; and providing the application layer content via IP multicast to base stations which join the multimedia broadcast/multicast service session.