Method and apparatus for determining a multicast group in a composite radio environment

摘要

A plurality of mobile communication units (1,2,3) are allocated to receive a common content by a multicast broadcast, when this content would otherwise be delivered using individual channels. The allocated communication units (1,2,3) are determined from plural communication units (1,2,3,4) which may previously be operating on different cellular communication networks (11,12). <IMAGE>