Patent ID: 8565180
Filing Date: 2013-10-22
Classification: H04L,H04W

Abstract:
1. A method for detecting a downlink control structure for carrier aggregation in a communications network in which data transmission is scheduled by a physical downlink control channel (PDCCH), the method including, at a user equipment (UE): receiving higher layer signaling enabling carrier aggregation for the UE, and reading PDCCHs of component carriers (CCs), wherein downlink control information (DCI) in the PDCCHs of the CCs is read according to one of a plurality of predefined formats derived from the higher layer signaling, and wherein the higher layer signaling indicates that a CC is a host CC that is configured to transmit the PDCCHs of client CCs, the predefined format of the DCI in the PDCCHs for the host CC having a non-zero-bit carrier indication field.