US 11,722,915 B2
V2X communication performance method performed by V2X terminal in wireless communication system, and terminal using the method
Seungmin Lee, Seoul (KR); and Hyukjin Chae, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Apr. 19, 2021, as Appl. No. 17/234,050.
Application 17/234,050 is a continuation of application No. 16/497,240, granted, now 11,006,298, previously published as PCT/KR2018/003553, filed on Mar. 26, 2018.
Claims priority of provisional application 62/476,726, filed on Mar. 25, 2017.
Prior Publication US 2021/0243627 A1, Aug. 5, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 24/08 (2009.01); H04W 4/46 (2018.01); H04W 76/14 (2018.01); H04L 5/00 (2006.01); H04W 74/08 (2009.01)
CPC H04W 24/08 (2013.01) [H04L 5/0053 (2013.01); H04W 4/46 (2018.02); H04W 74/08 (2013.01); H04W 76/14 (2018.02)] 5 Claims
OG exemplary drawing
 
5. A vehicle-to-X (V2X) User Equipment (UE) for a short transmission time interval (S-TTI) shorter than a legacy transmission time interval (L-TTI) in a wireless communication system, comprising:
a transceiver for transmitting and receiving a radio signal; and
a processor operatively coupled to the transceiver, wherein the processor is adapted to:
measure a channel busy ratio (CBR) or a channel occupancy ratio (CR); and
perform a V2X communication based on either the measured CBR or the measured CR,
wherein the S-TTI has a variable length,
wherein the L-TTI corresponds to a plurality of the S-TTIs,
wherein the CBR or the CR is measured based on the S-TTI in a resource pool,
wherein the measurement of the CBR or the CR is performed based on subchannels related to S-TTI units,
wherein a duration of the measurement of the CBR or the CR is determined based on S-TTI units,
wherein, when the S-TTI on a timing of subtracting a minimum processing time from the S-TTI for the V2X UE to perform a transmission corresponds to a Wth S-TTI in the L-TTI having index Z value, the V2X UE measures the CBR in the subchannel unit based on the S-TTI from a timing of subtracting 100 S-TTI lengths from the Wth S-TTI in the L-TTI having index Z value to a timing of subtracting 1 S-TTI length from the Wth S-TTI in the L-TTI having index Z value,
wherein the Z is an integer of 0 or more, and
wherein the W is a positive integer.