| CPC H04W 72/02 (2013.01) [H04L 1/1614 (2013.01); H04L 5/1469 (2013.01); H04L 27/2656 (2013.01); H04M 1/72505 (2013.01); H04W 28/26 (2013.01); H04W 56/001 (2013.01); H04W 72/0446 (2013.01); H04W 72/25 (2023.01); H04W 72/40 (2023.01); H04W 76/15 (2018.02); H04W 36/0066 (2013.01); H04W 80/02 (2013.01); H04W 92/18 (2013.01)] | 15 Claims |

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1. A communication apparatus comprising:
circuitry, which, in operation, determines a first set of subframes available for a sidelink operation; and
a receiver, which, in operation, receives a sidelink signal in a subframe among the first set of subframes,
wherein the first set of subframes is formed of 10240 subframes minus a second set of subframes and minus reserved subframes, the second set of subframes including subframes for transmitting a sidelink synchronization signal (SLSS), and the reserved subframes being determined based on a length of a bitmap configured for the first set of subframes, and
wherein a number of the reserved subframes (Y) within the 10240 subframes is determined by:
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