Patent ID: 7324497

Claim:
A mobile communication system comprising: a wireless network control device connected to a network; a base station; one or more mobiles connected with said base station, wherein data are transmitted from said wireless network control device to said one or more mobiles using a downlink shared channel, a channel for transmitting multicast data is set up between data server means present on said network and said wireless network control device, and said channel that is set up is mapped to said downlink shared channel; and mapping table means for storing the correspondence relationship of said downlink shared channel and dedicated channels that are set up for each mobile between core network and said wireless network, in said wireless network control device, wherein said dedicated channels are mapped onto a suitable downlink shared channel by referencing said mapping table means, wherein said mapping table means stores the identifier of the mobile for each said dedicated channel and unicasts data in respect of the mobile indicated by said identifier, and wherein said mapping table means stores a timing offset for each said dedicated channel and, when transmitting data using said dedicated channel, transmits data to a corresponding mobile with a transmission timing based on said timing offset.