A communication device includes a first client group in a first region; a second client group in a second region different from the first region; a first data hub configured to generate first burst data and a first control packet based on first client data received from the first client group; a second data hub configured to generate second burst data and a second control packet based on second client data received from the second client group; and a data transfer unit connected to the first data hub and the second data hub via a control protocol, the data transfer unit configured to, store the first burst data in a target memory based on the first control packet, and store the second burst data in the target memory based on the second control packet.