US 12,438,673 B2
Single coreset based PDCCH diversity over multiple TRPs
Shiwei Gao, Nepean (CA); Mattias Frenne, Uppsala (SE); and Siva Muruganathan, Stittsville (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/926,644
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 22, 2021, PCT No. PCT/IB2021/054465
§ 371(c)(1), (2) Date Nov. 21, 2022,
PCT Pub. No. WO2021/234678, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/029,050, filed on May 22, 2020.
Prior Publication US 2023/0198721 A1, Jun. 22, 2023
Int. Cl. H04L 5/00 (2006.01); H04W 72/232 (2023.01)
CPC H04L 5/0053 (2013.01) [H04L 5/0023 (2013.01); H04L 5/0035 (2013.01); H04L 5/0091 (2013.01); H04W 72/232 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method of operation of a wireless communication device for Downlink Control Information, DCI, reception using multiple transmission configuration indication, TCI, states, in a wireless network, the method comprising:
receiving, from a radio access node, one or more messages that activate a first TCI state and a second TCI state for a Control Resource Set, CORESET, comprising a first set of resource elements, REs, associated to the first TCI state and a second set of REs associated to the second TCI state;
receiving, from a radio access node, a configuration of:
a search space, SS, set associated with the CORESET;
one or more aggregation levels, ALs; and
a plurality of Physical Downlink Control Channel, PDCCH, candidates comprising PDCCH candidates for each of the one or more ALs in the SS set, wherein each PDCCH candidate comprises REs in the first set of REs and REs in the second set of REs; and
receiving a DCI carried by either:
a single PDCCH in a PDCCH candidate of the plurality of PDCCH candidates, wherein the PDCCH candidate comprises REs in the first set of REs and REs in the second set of REs; or
a first repetition of a PDCCH in the first set of REs and a second repetition of the PDCCH in the second set of REs.