Method and device for sending and receiving EPDCCH, base station, and user equipment

摘要

Provided are a method and a device for sending and receiving an ePDCCH, a base station, and user equipment. The method includes: a base station mapping enhanced resource element groups (eREGs) corresponding to an ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair; and the base station sending the ePDCCH on the resource elements. The disclosure improves the reliability and resource utilization of ePDCCH transmission.

主权项

1. A method for sending enhanced Physical Downlink Control Channel (ePDCCH), comprising:
a base station mapping enhanced resource element groups (eREGs) corresponding to the ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair, the base station mapping the eREGs corresponding to the ePDCCH to different resource elements comprises: the base station partitioning physical resource block pairs corresponding to the ePDCCH into eREGs, and the base station mapping the ePDCCH to predefined eREGs; and the base station sending the ePDCCH on the resource elements; wherein the base station partitioning the physical resource block pairs corresponding to the ePDCCH into eREGs comprises: the base station numbering resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and partitioning the numbered resource elements into eREGs; wherein partitioning the numbered resource elements into eREGs comprises one of the following: partitioning the numbered resource elements into the eREGs at equal intervals; partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements; inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs.