Control channel mapping method and apparatus

摘要

A control channel mapping method is provided, which includes: determining a search space corresponding to each object for a same aggregation level, where more than one object exist and are determined according to a component carrier; and mapping a control channel corresponding to the object into the determined search space. A detection method is further provided, which includes: determining an initial location of a search space corresponding to the object, where more than one search space exist for the same aggregation level, and the object is determined according to a component carrier, and determining a size of the search space corresponding to the object; and detecting a control channel in the determined search space. A User Equipment (UE) and a network equipment are also provided. Therefore, the collision of control channels is reduced, and an impact probability of control channels is reduced.

主权项

1. A method for a network equipment device in a multi-carrier system to map a control channel for a user equipment device, wherein the multi-carrier system has N component carriers, the N component carriers include a primary component carrier and N-1 non-primary component carriers, wherein N is an integer greater than 1, the method comprising:
determining, at a same aggregation level, search spaces on the primary component carrier, wherein each search space corresponds to a component carrier of the multi-carrier system, and a control channel corresponding to the component carrier is to be located in the search space; one-to-one mapping control channel(s) to corresponding search space(s) on the primary component carrier, wherein a control channel corresponding to the primary component carrier has a higher mapping priority than control channels corresponding to the N-1 non-primary component carriers; and transmitting the mapped control channel(s) in the corresponding search space(s) on the primary component carrier to the user equipment device; wherein a starting location of each search space on the primary component carrier is determined according to a component carrier indicator of the component carrier corresponding to the search space, and locations of any two of control channels in corresponding search spaces are unrelated, wherein each search space is composed of a plurality of control channel elements (CCEs), and the number of CCEs included in each search space is larger than the number of CCEs of a Physical Downlink Control Channel (PDCCH) for the aggregation level, and wherein a size of each search space is equal to a size of a standard search space, and the size of the standard search space is predefined for the aggregation level.