Mobile communication system, mobile station apparatus, home base station apparatus, and communication method

A mobile communication system comprising a home network and a core network connected to each other via an external network, the home network including a home base station apparatus having a mobile station apparatus connected thereto, and the core network including a position management apparatus and an access control apparatus connected thereto,

• wherein the mobile station apparatus establishes a first bearer that communicates with the home network and a second bearer that communicates with the core network,
• wherein upon receiving a packet via the first bearer from the mobile station apparatus, the home base station apparatus determines whether the packet is a multicast join request, and
• wherein if the packet is the multicast join request, the home base station apparatus executes a join procedure to a multicast group in the home network.

A mobile station apparatus connected to a mobile communication system including a home network and a core network connected to each other via an external network, the home network including a home base station apparatus having the mobile station apparatus connected thereto, and the core network including a position management apparatus and an access control apparatus connected thereto,

• wherein the mobile station apparatus establishes a first bearer that communicates with the home network and a second bearer that communicates with the core network,
• and in the transmission of a multicast join request, the mobile station apparatus transmits the multicast join request by selecting the first bearer if the multicast join request is addressed to the home network, or by selecting the second bearer if the multicast join request is addressed to the core network.

A home base station apparatus connected to a mobile communication system including a home network and a core network connected to each other via an external network, the home network including the home base station apparatus having a mobile station apparatus connected thereto, and the core network including a position management apparatus and an access control apparatus connected thereto,

• wherein the mobile station apparatus has established a first bearer that communicates with the home network and a second bearer that communicates with the core network, and
• wherein upon receiving a packet via the first bearer from the mobile station apparatus, the home base station apparatus determines whether the packet is a multicast join request, and
• wherein if the packet is the multicast join request, the home base station apparatus executes a join procedure to a multicast group in the home network.

A communication method of a mobile communication system comprising a home network and a core network connected to each other via an external network, the home network including a home base station apparatus having a mobile station apparatus connected thereto, and the core network including a position management apparatus and an access control apparatus connected thereto,

• wherein the mobile station apparatus has established a first bearer that communicates with the home network and a second bearer that communicates with the core network,
• and in the transmission of a multicast join request, the mobile station apparatus transmits the multicast join request by selecting the first bearer if the multicast join request is addressed to the home network, or by selecting the second bearer if the multicast join request is addressed to the core network.