Method for detecting downlink control channel, user equipment, and base station

摘要

The present invention provides a method for detecting a downlink control channel, a user equipment and a base station. The detection method comprises: a UE detecting a downlink control channel of the UE in a first search space and a second search space, the first search space and the second search space being resources for a base station to send downlink control channel information. In the present invention, the downlink control channel information is sent in two search spaces, thereby developing a new PDCCH resource, solving the problem of insufficient physical downlink control channel PDCCH resources due to the increased requirements for user access, and achieving the effect of increasing the system capacity and reducing the interference.

主权项

1. A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:
a User Equipment (UE) detecting a downlink control channel of the UE in a first search space and a second search space, wherein the first search space and the second search space are resources for a base station to send downlink control channel information; wherein both of the first search space and the second search space are UE-specific search spaces, and the first search space is distributed at a subframe or a time slot or a time-frequency location; and the second search space is distributed at another subframe or another time slot or another time-frequency location, wherein a time frequency at which the first search space is located and a time frequency at which the second search space is located can overlap; wherein the step of the UE detects the downlink control channel in the first search space and/or the second search space comprises: the UE using a configuration of {a, b, c, d} as the number of PDCCH candidates to detect PDCCH, wherein a, b, c and d are all positive integers and a+b+c+d is less than or equals 8; or the UE using a configuration of {e, f} as aggregation level to detect the PDCCH, where e and f are both positive integers, and the values of e and f belong to a set {1, 2, 4, 8}.