CPC H04W 72/23 (2023.01) [H04L 5/0053 (2013.01); H04L 5/001 (2013.01); H04L 5/0094 (2013.01)] | 10 Claims |
1. A method implemented by a base station for transmitting a downlink control information (DCI) message to the UE by a primary cell in a wireless communication system, the method comprising:
transmitting at least one control channel candidate with cyclic redundancy check (CRC) scrambled by a radio network temporary identity (RNTI) for the UE, wherein the DCI message has a common payload size and the same first control channel element (CCE) index, but with different sets of DCI information fields, as defined in a common search space and a UE-specific search space on the primary cell; and
transmitting a radio resource control (RRC) that configures the UE to assume that, for the control channel candidates, only the control channel in the common search space or only the control channel in the UE-specific search space is transmitted by the primary cell, depending on the radio resource control (RRC) configuration of the UE.
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