US 11,751,206 B2
Method and apparatus for sending and receiving downlink control information
Fredrik Huss, Sundbyberg (SE); Daniel Chen Larsson, Lund (SE); and Christian Skärby, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jul. 1, 2020, as Appl. No. 16/918,329.
Application 16/918,329 is a continuation of application No. 16/160,245, filed on Oct. 15, 2018, granted, now 10,757,695.
Application 16/160,245 is a continuation of application No. 14/357,018, granted, now 10,149,287, issued on Dec. 4, 2018, previously published as PCT/SE2014/050043, filed on Jan. 16, 2014.
Claims priority of provisional application 61/753,086, filed on Jan. 16, 2013.
Prior Publication US 2020/0337032 A1, Oct. 22, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/00 (2018.01); H04W 72/04 (2023.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01)
CPC H04W 72/23 (2023.01) [H04L 5/0053 (2013.01); H04L 5/001 (2013.01); H04L 5/0094 (2013.01)] 10 Claims
OG exemplary drawing
 
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.