US 11,985,086 B2
Communication apparatus and reference signal reception method
Takashi Iwai, Ishikawa (JP); Sadaki Futagi, Ishikawa (JP); Tomohumi Takata, Ishikawa (JP); Daichi Imamura, Saitama (JP); and Yoshihiko Ogawa, Kanagawa (JP)
Assigned to Sun Patent Trust, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on May 25, 2023, as Appl. No. 18/323,966.
Application 18/323,966 is a continuation of application No. 17/842,538, filed on Jun. 16, 2022, granted, now 11,700,098.
Application 17/842,538 is a continuation of application No. 17/130,591, filed on Dec. 22, 2020, granted, now 11,394,507, issued on Jul. 19, 2022.
Application 17/130,591 is a continuation of application No. 16/287,611, filed on Feb. 27, 2019, granted, now 10,911,198, issued on Feb. 2, 2021.
Application 16/287,611 is a continuation of application No. 13/146,611, granted, now 10,263,744, issued on Apr. 16, 2019, previously published as PCT/JP2010/000496, filed on Jan. 28, 2010.
Claims priority of application No. 2009-018632 (JP), filed on Jan. 29, 2009.
Prior Publication US 2023/0299913 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04L 25/03 (2006.01); H04L 27/26 (2006.01)
CPC H04L 5/0048 (2013.01) [H04L 25/0226 (2013.01); H04L 27/2613 (2013.01); H04L 25/022 (2013.01); H04L 25/03159 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A communication apparatus, comprising:
a transmitter, which, in operation, transmits, to a terminal, allocation information indicating one or more sets of consecutive frequency resources allocated in each of one or more uplink component carriers, which include a first component carrier and a second component carrier, the first component carrier and the second component carrier having different frequencies, and more than one set of consecutive frequency resources, of said one or more sets of consecutive frequency resources, being spaced apart from each other along a frequency axis; and
a receiver, which, in operation, receives one uplink reference signal sequence or plural uplink reference signal sequences from the terminal that performs, based on the allocation information, one operation selected from two operations including:
a first operation of generating the plural uplink reference signal sequences including a first sequence and a second sequence, mapping the generated first sequence in said one or more sets of consecutive frequency resources allocated in the first component carrier, mapping the generated second sequence in said one or more sets of consecutive frequency resources allocated in the second component carrier, and controlling transmission of the mapped first sequence and the mapped second sequence; and
a second operation of generating the one uplink reference signal sequence, mapping the generated one uplink reference signal sequence in said more than one set of consecutive frequency resources allocated in said one uplink component carrier by dividing the generated one uplink reference signal sequence into more subsequences correspondingly to said more than one set of consecutive frequency resources, respectively, and controlling transmission of the mapped one uplink reference signal sequence.