Uplink and downlink scheduling method for LTE (Long Term Evolution)-Advanced system/LTE-Advanced relay system

The invention discloses a random access overload control method based on an LTE (Long Term Evolution)-Advanced system. The random access overload control method comprises a downlink scheduling algorithm and an uplink scheduling algorithm, wherein the downlink scheduling algorithm specifically comprises the following process: traversing all radio bearers, performing summation to obtain the total volume D of data to be transmitted in a base station cache region, performing normalization processing to obtain an uplink scheduling parameter P, and adding the uplink scheduling parameter P into the scheduling algorithm in the form of r, wherein r corresponds to the instantaneous transmission rate of each user; and the uplink scheduling method comprises the following process: performing summation according to BSRs uploaded by users to obtain the total volume D of data to be uploaded, performing normalization processing to obtain a downlink scheduling parameter P, and adding the downlink scheduling parameter P into the scheduling algorithm in the form of r. The scheduling algorithms can have throughput adaptability. When the volume of the data to be transmitted is small, the influences of the parameters of the data to be transmitted on the algorithms are small, and increase along with the increase of the total volume of the data to be transmitted, so that the throughput adaptability of the system is improved; higher throughput than that of an unimproved scheduling algorithm can be achieved finally; and the performance of a base station is improved.