US 11,728,953 B2
Reference signal reception and CQI computation method and wireless communication apparatus
Akihiko Nishio, Osaka (JP); Seigo Nakao, Osaka (JP); and Daichi Imamura, Saitama (JP)
Assigned to Sun Patent Trust, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Jun. 23, 2022, as Appl. No. 17/848,297.
Application 17/848,297 is a continuation of application No. 17/169,106, filed on Feb. 5, 2021, granted, now 11,398,891.
Application 17/169,106 is a continuation of application No. 16/716,094, filed on Dec. 16, 2019, granted, now 10,958,403, issued on Mar. 23, 2021.
Application 16/716,094 is a continuation of application No. 16/218,257, filed on Dec. 12, 2018, granted, now 10,547,433, issued on Jan. 28, 2020.
Application 16/218,257 is a continuation of application No. 15/673,090, filed on Aug. 9, 2017, granted, now 10,193,679, issued on Jan. 29, 2019.
Application 15/673,090 is a continuation of application No. 15/372,113, filed on Dec. 7, 2016, granted, now 9,762,370, issued on Sep. 12, 2017.
Application 15/372,113 is a continuation of application No. 15/264,219, filed on Sep. 13, 2016, granted, now 9,548,849, issued on Jan. 17, 2017.
Application 15/264,219 is a continuation of application No. 14/602,176, filed on Jan. 21, 2015, granted, now 9,473,282, issued on Oct. 18, 2016.
Application 14/602,176 is a continuation of application No. 13/144,665, granted, now 8,996,049, issued on Mar. 31, 2015, previously published as PCT/JP2010/000499, filed on Jan. 28, 2010.
Claims priority of application No. 2009-018284 (JP), filed on Jan. 29, 2009.
Prior Publication US 2022/0321309 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01); H04L 1/1812 (2023.01); H04B 7/06 (2006.01); H04W 72/54 (2023.01)
CPC H04L 5/0057 (2013.01) [H04L 1/1812 (2013.01); H04L 5/005 (2013.01); H04L 5/0028 (2013.01); H04L 5/0051 (2013.01); H04L 5/0073 (2013.01); H04W 72/0446 (2013.01); H04W 72/23 (2023.01); H04B 7/0632 (2013.01); H04L 5/0012 (2013.01); H04L 5/0041 (2013.01); H04L 5/0082 (2013.01); H04W 72/54 (2023.01)] 13 Claims
OG exemplary drawing
 
1. A communication apparatus comprising:
circuitry, which, in operation, maps a first reference signal in a subframe, and maps a second reference signal in all downlink subframes, the first reference signal being used for computing a channel quality indicator (CQI) by a terminal compliant with a first communication system, and the second reference signal being used for computing a CQI by the terminal and another terminal compliant with a second communication system; and
a transmitter, which, in operation, transmits the first reference signal to the terminal, and transmits the second reference signal to the terminal and the other terminal,
wherein the first reference signal is mapped in a same period as a period of semi-persistent scheduling (SPS) transmission, or in a period which is 1/N of the period of the SPS transmission, where N is a positive integer.