US 11,844,027 B2
Transmit power control for physical random access channels
Martin Feuersaenger, Bremen (DE); Joachim Loehr, Hessen (DE); and Takahisa Aoyama, Kanagawa (JP)
Assigned to Sun Patent Trust, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Aug. 25, 2022, as Appl. No. 17/895,934.
Application 17/895,934 is a continuation of application No. 16/773,209, filed on Jan. 27, 2020, granted, now 11,463,967.
Application 16/773,209 is a continuation of application No. 16/390,968, filed on Apr. 22, 2019, granted, now 10,588,093, issued on Mar. 10, 2020.
Application 16/390,968 is a continuation of application No. 16/141,829, filed on Sep. 25, 2018, granted, now 10,349,361, issued on Jul. 9, 2019.
Application 16/141,829 is a continuation of application No. 15/232,696, filed on Aug. 9, 2016, granted, now 10,117,193, issued on Oct. 30, 2018.
Application 15/232,696 is a continuation of application No. 14/657,891, filed on Mar. 13, 2015, granted, now 9,439,217, issued on Sep. 6, 2016.
Application 14/657,891 is a continuation of application No. 13/637,607, granted, now 9,008,050, issued on Apr. 14, 2015, previously published as PCT/EP2011/001658, filed on Apr. 1, 2011.
Prior Publication US 2022/0408372 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 52/14 (2009.01); H04W 52/28 (2009.01); H04W 52/32 (2009.01); H04W 52/34 (2009.01); H04W 74/00 (2009.01); H04W 74/08 (2009.01); H04W 72/21 (2023.01); H04W 72/04 (2023.01); H04W 56/00 (2009.01)
CPC H04W 52/146 (2013.01) [H04W 52/281 (2013.01); H04W 52/325 (2013.01); H04W 52/327 (2013.01); H04W 52/346 (2013.01); H04W 72/04 (2013.01); H04W 72/21 (2023.01); H04W 74/004 (2013.01); H04W 74/006 (2013.01); H04W 74/0833 (2013.01); H04W 52/34 (2013.01); H04W 56/0045 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An integrated circuitry, comprising:
adjusting circuitry, which, in operation, controls:
determining power of first physical random access channel (PRACH) transmission on a first component carrier, and determining power of second PRACH transmission on a second component carrier; and
responsive to that the first PRACH transmission in a first subframe overlaps in a time domain with the second PRACH transmission in a second subframe having a different start time from the first subframe and that total power of the first PRACH transmission and the second PRACH transmission exceeds a configured transmission power value (PMAX), adjusting the power of the second PRACH transmission in the second subframe so that the total power at an overlapped portion between the first PRACH transmission in the first subframe and the second PRACH transmission in the second subframe does not exceed PMAX; and
transmission circuitry, which, in operation, controls transmitting a first random access preamble in the first subframe on the first component carrier at the power of the first PRACH transmission, and transmitting a second random access preamble in the second subframe on the second component carrier at the power of the second PRACH transmission,
wherein the first component carrier is a Primary Cell and the second component carrier is another Cell, and
wherein the Primary Cell belongs to a first timing advance group (TAG) and the another Cell belongs to a second TAG different from the first TAG.