MULTICAST GROUP REUSE IN CELLULAR NETWORK MULTICASE TRANSPORT

摘要

For transmission of multicast data in a cellular network, a gateway (200) allocates a set of multicast sessions (111, 112) to a single Internet Protocol Multicast group (110). For each of the multicast sessions (111, 112), the gateway indicates an Internet Protocol Multicast address of the Internet Protocol Multicast group to one or more radio access network nodes (100) of the cellular network. For each of the multicast sessions (111, 112), the gateway (200) indicates a different identifier to the radio access network nodes (100), e.g., in the form of a Tunnel Endpoint Identifier. The gateway (200) sends multicast data of the multicast sessions (111, 112) in one or more Internet Protocol Multicast data packets addressed to the Internet Protocol Multicast address of the Internet Protocol Multicast group. The multicast data of each of the multicast sessions (111, 112) include the respective identifier to allow identification of the multicast session (111, 112) at the radio access network node (100).

主权项

1. A method for controlling transmission of multicast data in a cellular network, the method comprising:
a gateway allocating a set of multicast sessions to a single Internet Protocol Multicast group; for each of the multicast sessions, the gateway indicating an Internet Protocol Multicast address of the Internet Protocol Multicast group to at least one radio access network node of the cellular network; for each of the multicast sessions, the gateway indicating a different identifier to the at least one radio access network node; and the gateway sending multicast data of the multicast sessions in one or more Internet Protocol Multicast data packets addressed to the Internet Protocol Multicast address of the Internet Protocol Multicast group, the multicast data of each of the multicast sessions comprising the respective identifier to identify the multicast session.