US 12,010,691 B2
Method and apparatus for transmitting/receiving channels in mobile communication system supporting massive MIMO
Younsun Kim, Seongnam-si (KR); Aris Papasakellariou, Dallas, TX (US); Kiil Kim, Yongin-si (KR); Juho Lee, Suwon-si (KR); Hyojin Lee, Suwon-si (KR); and Joonyoung Cho, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Feb. 10, 2021, as Appl. No. 17/172,639.
Application 17/172,639 is a continuation of application No. 16/658,993, filed on Oct. 21, 2019, granted, now 10,925,051.
Application 16/658,993 is a continuation of application No. 15/589,371, filed on May 8, 2017, granted, now 10,455,566, issued on Oct. 22, 2019.
Application 15/589,371 is a continuation of application No. 13/857,555, filed on Apr. 5, 2013, granted, now 9,648,588, issued on May 9, 2017.
Claims priority of provisional application 61/621,176, filed on Apr. 6, 2012.
Prior Publication US 2021/0168777 A1, Jun. 3, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/23 (2023.01); H04B 7/0413 (2017.01); H04L 5/00 (2006.01); H04W 72/02 (2009.01); H04W 72/04 (2023.01); H04W 84/04 (2009.01)
CPC H04W 72/23 (2023.01) [H04L 5/0051 (2013.01); H04L 5/0094 (2013.01); H04W 72/02 (2013.01); H04W 72/04 (2013.01); H04B 7/0413 (2013.01); H04L 5/0023 (2013.01); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a mobile communication system, the method comprising:
receiving, from a base station, downlink scheduling information for downlink data on a physical downlink control channel, wherein the downlink scheduling information includes demodulation reference signal (DMRS) configuration information indicating a number of a DMRS group and at least one DMRS antenna port allocated to the terminal, and wherein a set of the DMRS group corresponding to the number of the DMRS group comprises one or more DMRS groups that are predefined, and each DMRS group corresponds to a plurality of DMRS antenna ports; and
receiving, from the base station, the downlink data and a DMRS associated with the at least one allocated DMRS antenna port,
wherein resources for the one or more DMRS groups are not used for carrying the downlink data, and
wherein, based on the DMRS configuration information corresponding to a first value, the set of the DMRS group comprises the at least one allocated DMRS antenna port indicated by the DMRS configuration information and at least one DMRS antenna port that is not allocated to the terminal.