Method for improving access network selection in the context of discontinuous coverage access networks, corresponding access controller, and corresponding multicast system

The invention relates to a content server is a non-contiguous covering wireless access network the terminal data transfer multiple types of access network environment selecting another network access method. To the invention, the method comprises the following steps: The once to coming from the network controller selecting the non-contiguous covering wireless access network and support of another network access, comprising a cache data the non-contiguous covering wireless access network access controller sends a message, wherein a informed which is connected to the network access forwarding to the cache data.