Patent ID: 9537629
Date: 2017-01-03
CPC Classifications: H04L

Claim:
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.