UPLINK TRANSMISSION METHOD AND SYSTEM FOR PUSCH

摘要

In the present invention, several uplink transmission modes for specific scenes are provided as a reasonable combination or mapping relationship of limited transmission schemes, Downlink Control Information (DCI) formats and search space of blind decoding. A transmission method for a Physical Uplink Shared Channel (PUSCH) is provided in the present invention, which includes: at the base station side, sending a message to the user equipment to inform it the uplink transmission mode to be used; selecting the DCI format in the uplink transmission mode according to the mapping relationship; sending the DCI in the determined format to the user equipment; at the user equipment side, receiving the message from the base station to learn the uplink transmission mode to be used; searching the DCI format corresponding to the uplink transmission mode in the search space corresponding to the uplink transmission mode to decode the DCI, thus determining the PUSCH transmission scheme; according to the control information carried in the decoded DCI, and on the basis of the determined transmission scheme, transmitting the PUSCH. In each uplink transmission mode, the user equipment only needs to monitor the limited DCI formats on the Physical Downlink Control Channel (PDCCH). Therefore, the complexity for blind decoding is reduced. In addition, for different transmission schemes, according to different number of layers, codebook size and the like, with different DCI formats, the signaling cost is decreased. Besides, by designing the transmission scheme included in the transmission mode, the scheduling flexibility is enabled. A transmission system for a Physical Uplink Shared Channel is also provided in the present invention.