DCI (Downlink Control Information) sending method, system and device as well as uplink transmission method, system and device

Abstract

The invention relates to a DCI (Downlink Control Information) sending method, system and device as well as an transmission uplink method, system and device, relating to the technical field of wireless communication and aiming at solving the problem that a network side is difficult to dispatch a user terminal to carry out uplink transmission because the traditional DCI does not support an LTE-A (Long Term Evolution-Advanced) system in the prior art. The DCI sending method disclosed by the embodiment of the invention comprises the following steps that: the network side generates the DCI used for dispatching the uplink transmission; the network side sends the generated DCI, wherein the DCI comprises the following information: resource indication information, modulation indication information, data indication information, mapping indication information and precoding indication information, wherein the resource indication information is used for indicating the positions of allocated resources; the modulation indication information is used for indicating a modulation coding order of a transmission block; the data indication information is used for indicating whether the transmission block transmits new data or not; the mapping indication information is used for indicating the corresponding relationship of the transmission block and a code word; and the precoding indication information is used for indicating the size of an uplink transmission order and an index of a used precoding code word. The DCI sending method can be used for enhancing the efficiency of the uplink transmission.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, system and device for sending DCI (Downlink Control Information, downlink control information) and uplink transmission. Background technique [0002] MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) technology uses multiple antennas for transmission and reception at both the transmitting end and the receiving end, thereby greatly improving the transmission performance and capacity of the system. [0003] In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrade) uplink transmission, at least two transmission modes can be used to implement MIMO transmission: uplink single-port transmission and uplink spatial multiplexing transmission. The former only transmits the data of a single port on multiple antennas through the method of antenna virtualization, which is basically consistent with the uplink transmission of LTE (Long Term Ev...

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Problems solved by technology

[0006] Embodiments of the present invention provide a method, system, and device for sending DCI and uplink transmission to solve the problem in the prior art that the current DCI does not support the LTE-A system, making it difficult for the network side to schedule user terminals for uplink transmission question

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