Further, the sending unit 72 is further configured to: for the physical downlink control channel in the at least one subset, notify the user equipment of one group of common reference signal CRS rate matching information, where at least one piece of CRS rate matching information in the group of CRS rate matching information includes at least two pieces of CRS pattern information, and the at least one piece of CRS rate matching information in the group of CRS rate matching information is used for rate matching for the downlink data indicated by the physical downlink control channel in the at least one subset.
Further, the information about the first resource set group sent by the sending unit 72 includes time-frequency resource configuration information of the physical downlink control channel set, and/or the information about the second resource set group sent by the sending unit 72 includes time-frequency resource configuration information of the physical downlink control channel for retransmission.
The device in this embodiment may execute the information configuration method in any embodiment of the present invention; therefore, for a corresponding effect that can be obtained by the device, reference may be made to descriptions in the foregoing embodiments, and details are not described herein again.