BORDER GUARD/RECONNAISSANCE COMMUNICATION TERMINAL FOR PROVIDING VARIABLE FRAME STRUCTURE AND METHOD FOR ALTERING THE FRAME STRUCTURE

摘要

A border monitoring / reconnaissance communication terminal supporting a variable frame structure and a frame structure variable method thereof are disclosed. A synchronization unit for detecting a frame start point of the downlink signal and providing DLStartINT, a start address of the buffer, an IDCell, and a SegmentID; The DLStartINT, the start address of the buffer, the IDCell, and the SegmentID of the downlink signal, updates the received number of OFDM symbols of the downlink signal in real time, processes the OFDM symbol of the downlink signal according to the number of processed OFDM symbols, An OFDM symbol unit processor; A slot-based processing unit for performing deallocation of the FCH; The FCH is decoded and the size of the MAP, the used subchannel BitMAP, and the channel coding type are checked, and after the FFT processing of the symbols included in the map according to the size of the map, Performs mapping, decodes the map, and parses the DLMAP when there is no CRC error of the MPDU. Determines an uplink / downlink ratio by checking the OFDMA symbol parameters, and configures an FEC block unit processor to feedback to the OFDM symbol unit processor.