Method for transmitting control information, user equipment and base station

Abstract

The invention discloses a method for transmitting control information, user equipment and a base station. The method comprises the following steps of: acquiring a transmission mode of a data channel configured by the base station; determining a downlink control information DCI format set corresponding to the transmission mode, wherein the DCI format set comprises a first DCI format, and the first DCI format comprises single code word control information; and detecting a control signaling which is sent by the base station and corresponds to the DCI format set according to the DCI format set. The user equipment comprises a first acquisition module, a first determination module and a detection module. The base station comprises a configuration module, a first determination module and a first sending module. By the method for transmitting the control information, the user equipment and the base station, the transmission mode of the data channel at least corresponds to two transmission modes, so that the control channel can be enhanced, the expense of the control channel is reduced, and the system scheduling efficiency and flexibility are improved; and moreover, the problem of blocking of the control channel can be solved, and the utilization rate of control channel resources of a system can be increased.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for transmitting control information in the communication field, a user equipment and a base station. Background technique [0002] In a Long Term Evolution (referred to as "LTE") system, an evolved base station (evolved NodeB, referred to as "eNB") communicates to a user equipment ( User Equipment, referred to as "UE") performs uplink and downlink data scheduling, and the minimum time interval for scheduling is one subframe, and the time length of one subframe is 1 millisecond. After the UE demodulates and decodes the PDCCH according to the PDCCH payload size (Payload Size) and control channel element (Control Channel Element, "CCE") level in its specific search space (Search Space), it uses the UE-specific The scrambling code descrambles the cyclic redundancy check code (Cyclic Redundancy Check, "CRC" for short), so as to check and determine its own PDCCH, and furthe...

AI Technical Summary

Problems solved by technology

[0004] When closed-loop MIMO transmission is adopted, and the UE is at the edge of the cell or the UE is in a high-speed mobile state, it is necessary to use a lower coding rate to send PDCCH signaling for the UE. Due to the load of the DCI format 2C used to schedule closed-loop MIMO transmission (Payload ) is large, so using a lower coding rate will increase the overhead of PDCCH, increase the probability of PDCCH blocking, and reduce the utilization rate of system control channel resources

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