COMMUNICATION APPARATUS, COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

A communication apparatus wherein the function arrangement of each device is revised, thereby preventing an increase in traffic of a public network and further suppressing an increase in communication cost of the public network. In this apparatus, a control part (101), when notified of a duplication of MBMS data by RNC-c, controls a PDCP part (102), an RLC part (103) and a MAC-d part (104) so as to perform an MBMS data duplication process . The control part (101), when notified of an establishment of a communication line with a node (B), controls the PDCP part (102), RLC part (103) and MAC-d part (104) so as to establish the communication line with the node (B) . The RLC part (103) duplicates, based on the control by the control part (101), the MBMS data received from the PDCP part (102). The MAC-d part (104) transmits the MBMS data as MAC processed to the node (B) via a local network between an RNC-u (100) and the node (B).