DOWNLINK CONTROL INFORMATION TRANSMISSION METHOD AND DEVICE

摘要

Disclosed in an embodiment of the present invention are a downlink control information transmission method and device. Provided in the technical solution in the embodiment of the present invention is a downlink control information transmission method capable of effectively supporting the two E-PDCCH transmission modes. The method comprises: a base station allocates a localized E-PDCCH resource and a distributed E-PDCCH resource; a terminal device detects DCI format in the search space corresponding to the localized E-PDCCH resource and in the search space corresponding to the distributed E-PDCCH resource, and obtains the downlink control information transmitted by the base station. In the prior art, the E-PDCCH has no specific transmission and allocation solutions under the localized and distributed transmission modes, while the present invention solves the problem and enables the E-PDCCH to obtain channel selection gain and diversity transmission gain.