WIRELESS COMMUNICATION SYSTEM, RECEIVING DEVICE, TRANSMITTING DEVICE AND METHOD OF WIRELESS COMMUNICATION

摘要

It is an object to provide a wireless communication system that can implement high-speed communication. During carrier aggregation, a BSR management unit, i.e., a sending device, sends a BSR by using a Pcell. In a receiving device, a BSR management unit (62) that received the BSR by using the PCell determines whether a data exchange is performed using the SCell. If it is determined that a data exchange is performed by using the SCell, a RA management unit (61) sends an Msg1 that includes a dedicated preamble that is unique to a device.