US 12,432,002 B2
Communication apparatus and reference signal receiving method
Takashi Iwai, Ishikawa (JP); Daichi Imamura, Saitama (JP); Akihiko Nishio, Osaka (JP); Yoshihiko Ogawa, Kanagawa (JP); and Masaru Fukuoka, Ishikawa (JP)
Assigned to Sun Patent Trust, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Jan. 9, 2024, as Appl. No. 18/407,811.
Application 18/407,811 is a continuation of application No. 17/660,680, filed on Apr. 26, 2022, granted, now 11,909,511.
Application 17/660,680 is a continuation of application No. 17/038,835, filed on Sep. 30, 2020, granted, now 11,349,588, issued on May 31, 2022.
Application 17/038,835 is a continuation of application No. 16/363,095, filed on Mar. 25, 2019, granted, now 10,826,638, issued on Nov. 3, 2020.
Application 16/363,095 is a continuation of application No. 15/860,776, filed on Jan. 3, 2018, granted, now 10,291,344, issued on May 14, 2019.
Application 15/860,776 is a continuation of application No. 15/144,904, filed on May 3, 2016, granted, now 9,893,830, issued on Feb. 13, 2018.
Application 15/144,904 is a continuation of application No. 14/692,391, filed on Apr. 21, 2015, granted, now 9,363,031, issued on Jun. 7, 2016.
Application 14/692,391 is a continuation of application No. 14/294,762, filed on Jun. 3, 2014, granted, now 9,048,972, issued on Jun. 2, 2015.
Application 14/294,762 is a continuation of application No. 13/501,914, granted, now 8,797,986, issued on Aug. 5, 2014, previously published as PCT/JP2010/006398, filed on Oct. 29, 2010.
Claims priority of application No. 2009-250432 (JP), filed on Oct. 30, 2009.
Prior Publication US 2024/0146434 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 11/00 (2006.01); H04B 1/713 (2011.01); H04B 7/024 (2017.01); H04B 17/354 (2015.01); H04J 13/00 (2011.01); H04L 1/00 (2006.01); H04L 1/20 (2006.01); H04L 5/00 (2006.01)
CPC H04J 11/0053 (2013.01) [H04B 1/713 (2013.01); H04B 7/024 (2013.01); H04B 17/354 (2015.01); H04J 13/0062 (2013.01); H04J 13/0074 (2013.01); H04L 1/20 (2013.01); H04L 5/0007 (2013.01); H04L 5/0035 (2013.01); H04L 5/0051 (2013.01); H04L 5/0091 (2013.01); H04L 1/0026 (2013.01); H04L 5/0048 (2013.01); H04L 5/0073 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system comprising a base station and a terminal,
the base station comprising:
a transmitter, which, in operation, transmits, to the terminal, information related to a hopping pattern that defines a variation of sequence numbers over time; and
a receiver, which, in operation, receives, from the terminal, a reference signal, and
the terminal comprising:
circuitry, which, in operation, calculates a sequence number using the hopping pattern, the sequence number being calculated differently by whether a CoMP (Coordinated Multiple Point transmission and reception) mode or Non-CoMP mode is set, wherein, when the CoMP mode is set, a plurality of base stations or cells communicate with the terminal in a coordinated manner between the plurality of base stations or cells, and generates a sequence using the calculated sequence number; and
a transmitter, which, in operation, transmits, to the base station, the reference signal using the generated sequence.