US 12,356,450 B2
Communication control method
Masato Fujishiro, Yokohama (JP); and Henry Chang, San Diego, CA (US)
Assigned to KYOCERA Corporation, Kyoto (JP)
Filed by KYOCERA Corporation, Kyoto (JP)
Filed on Apr. 9, 2024, as Appl. No. 18/630,698.
Application 18/630,698 is a continuation of application No. 17/371,625, filed on Jul. 9, 2021, granted, now 11,985,701.
Application 17/371,625 is a continuation of application No. PCT/JP2019/048235, filed on Dec. 10, 2019.
Claims priority of provisional application 62/790,592, filed on Jan. 10, 2019.
Prior Publication US 2024/0260084 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0808 (2024.01); H04W 24/08 (2009.01); H04W 48/16 (2009.01)
CPC H04W 74/0808 (2013.01) [H04W 24/08 (2013.01); H04W 48/16 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A communication control method used in a user equipment in a cell operated in an unlicensed band, the communication control method comprising:
performing, by the user equipment, Listen Before Talk (LBT) before performing transmission in the cell;
determining, by the user equipment, whether the number of the LBT failure reaches a threshold;
in response to determining that the number of the LBT failure reaches the threshold, performing, by the user equipment, transmission in a serving cell in which the number of the LBT failure does not reach the threshold; and
when determining that the number of the LBT failure reaches the threshold:
performing, by the user equipment, LBT in the serving cell different from the cell; and
determining, by the user equipment, whether a number of the LBT failure in the serving cell reaches the threshold.