US 11,743,959 B2
Random access method and apparatus for use in wireless communication system supporting dual connectivity
Jaehyuk Jang, Suwon-si (KR); Soenghun Kim, Suwon-si (KR); Gert-Jan Van Lieshout, Apeldoorn (NL); and Youngbum Kim, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Sep. 3, 2021, as Appl. No. 17/466,216.
Application 17/466,216 is a continuation of application No. 16/686,947, filed on Nov. 18, 2019, granted, now 11,116,026, issued on Sep. 7, 2021.
Application 16/686,947 is a continuation of application No. 15/887,542, filed on Feb. 2, 2018, granted, now 10,485,045, issued on Nov. 19, 2019.
Application 15/887,542 is a continuation of application No. 14/877,314, filed on Oct. 7, 2015, granted, now 9,888,514, issued on Feb. 6, 2018.
Application 14/877,314 is a continuation of application No. 14/661,459, filed on Mar. 18, 2015, granted, now 9,854,619, issued on Dec. 26, 2017.
Claims priority of application No. 10-2014-0033497 (KR), filed on Mar. 21, 2014.
Prior Publication US 2021/0400752 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/15 (2018.01); H04W 52/30 (2009.01); H04W 52/36 (2009.01); H04W 52/48 (2009.01); H04W 52/14 (2009.01); H04W 52/50 (2009.01); H04W 74/08 (2009.01); H04W 52/24 (2009.01); H04L 5/00 (2006.01); H04W 52/34 (2009.01); H04W 52/40 (2009.01)
CPC H04W 76/15 (2018.02) [H04W 52/146 (2013.01); H04W 52/30 (2013.01); H04W 52/36 (2013.01); H04W 52/367 (2013.01); H04W 52/48 (2013.01); H04W 52/50 (2013.01); H04W 74/0833 (2013.01); H04L 5/001 (2013.01); H04W 52/244 (2013.01); H04W 52/34 (2013.01); H04W 52/346 (2013.01); H04W 52/365 (2013.01); H04W 52/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying that a first physical random access channel (PRACH) transmission of a master cell group (MCG) is overlapped with a second PRACH transmission of a secondary cell group (SCG) in a time domain and a sum of a transmission power determined for the first PRACH transmission of the MCG and a transmission power determined for the second PRACH transmission of the SCG exceeds a configured maximum transmission power for the terminal;
performing the first PRACH transmission of the MCG based on the transmission power determined for the first PRACH transmission of the MCG according to the identification;
according to the identification, reducing the transmission power determined for the second PRACH transmission of the SCG and performing the second PRACH transmission of the SCG based on the reduced transmission power of the SCG; and
in case that no random access response associated with the second PRACH transmission of the SCG is received for a predetermined time, determining a transmission power for a third PRACH transmission of the SCG based on skipping an increase of a counter associated with the transmission power for the third PRACH transmission of the SCG and performing the third PRACH transmission of the SCG based on the transmission power determined for the third PRACH transmission of the SCG.