US 12,250,698 B2
Communication system
Yassin Aden Awad, Umbridge (GB); Yasushi Maruta, Tokyo (JP); and Toshifumi Sato, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Oct. 25, 2023, as Appl. No. 18/383,509.
Application 18/383,509 is a continuation of application No. 17/744,967, filed on May 16, 2022, granted, now 11,974,295.
Application 17/744,967 is a continuation of application No. 16/893,736, filed on Jun. 5, 2020, granted, now 11,337,204, issued on May 17, 2022.
Application 16/893,736 is a continuation of application No. 14/993,636, filed on Jan. 12, 2016, granted, now 10,716,103, issued on Jul. 14, 2020.
Application 14/993,636 is a continuation of application No. 13/818,294, granted, now 9,271,272, issued on Feb. 23, 2016, previously published as PCT/JP2012/069523, filed on Jul. 25, 2012.
Claims priority of application No. 1112752 (GB), filed on Jul. 25, 2011.
Prior Publication US 2024/0057101 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/00 (2023.01); H04W 72/044 (2023.01); H04W 72/0453 (2023.01); H04W 72/20 (2023.01); H04W 72/23 (2023.01); H04W 16/28 (2009.01)
CPC H04W 72/23 (2023.01) [H04W 72/0453 (2013.01); H04W 72/046 (2013.01); H04W 72/20 (2023.01); H04W 16/28 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A mobile terminal comprising:
at least one memory storing instructions; and
at least one processor configured to process the instructions to:
receive a first demodulation reference signal (DMRS) transmitted from a base station using at least one resource element corresponding to first two antenna ports of a plurality of antenna ports, wherein the first DMRS is associated with transmission of a first physical downlink control channel (PDCCH) corresponding to the first two antenna ports of the plurality of antenna ports;
receive a second DMRS transmitted from the base station using at least one resource element corresponding to second two antenna ports of the plurality of antenna ports, wherein the second DMRS is associated with transmission of a second PDCCH corresponding to the second two antenna ports of the plurality of antenna ports;
in a case where the first PDCCH is transmitted, demodulate the first PDCCH based on the first DMRS; and
in a case where the second PDCCH is transmitted, demodulate the second PDCCH based on the second DMRS.