DEVICE AND METHOD FOR TRANSMITTING TDD DOWNLINK DATA IN AN LTE SYSTEM

摘要

The present invention relates to a device and method for transmitting TDD downlink data in an LTE system, which enable a TDD downlink signal to be transmitted every 1 ms in layer 2 while satisfying throughput. According to one characteristic of the present invention, a device for transmitting TDD downlink data in an LTE system is provided, which includes: a data buffer sequentially loading IP data irregularly delivered from a layer 3 processing unit; a transmission control unit providing instructions for the creation of an ordinary downlink sub-frame PDU queue and a special sub-frame PDU queue at a ratio appropriate to UL/DL configuration information and sequentially delivering the data loaded in the ordinary downlink sub-frame PDU queue and the special sub-frame PDU queue in the order prescribed in UL/DL configuration and in the loaded order; and an ordinary downlink sub-frame PDU queue creating unit and a special sub-frame PDU queue creating unit which create the ordinary downlink sub-frame PDU queue and the special sub-frame PDU queue according to the instructions of the transmission control unit and load the data loaded in the data buffer. The size of one transmission block of the special sub-frame PDU queue is defined as a value smaller than that of one transmission block of the ordinary downlink sub-frame PDU queue.