Method and apparatus for determining resource pool

One or more non-transitory computer readable storage media encoded with instructions that, when executed by a processor, cause the processor to perform operations for determining a resource pool for a vehicle-to-everything (V2X) sidelink transmission or a vehicle-to-vehicle (V2V) sidelink transmission, comprising:

• obtaining, by a wireless device, a bitmap for determining a resource pool for the V2X sidelink transmission or the V2V sidelink transmission;
• determining a first subset of subframes by excluding from a plurality of consecutive subframes for a period:
• subframes in which a sidelink synchronization signal (SLSS) resource is configured, downlink subframes, and special subframes;
• determining a second subset of subframes by the wireless device by excluding, from the first subset of subframes, one or more second subframes, wherein a quantity of the one or more second subframes is determined by performing a modulo operation based on a quantity of subframes of the first subset of subframes and a quantity of bits of the bitmap, and wherein a quantity of subframes of the second subset of subframes corresponds to an integer multiple of the quantity of bits of the bitmap;
• and
• determining the resource pool based on the second subset of subframes and on a plurality of repetitions of the bitmap.

A wireless device comprising:

• at least one memory for storing data;
• and
• at least one processor for executing instructions associated with the data, wherein executing the instructions causes the wireless device to perform operations for determining a resource pool for a vehicle-to-everything (V2X) sidelink transmission or a vehicle-to-vehicle (V2V) sidelink transmission, comprising:
• obtaining a bitmap for determining a resource pool for the V2X sidelink transmission or the V2V sidelink transmission;
• determining a first subset of subframes by excluding from a plurality of consecutive subframes for a period:
• subframes in which a sidelink synchronization signal (SLSS) resource is configured, downlink subframes, and special subframes;
• determining a second subset of subframes by the wireless device by excluding, from the first subset of subframes, one or more second subframes, wherein a quantity of the one or more second subframes is determined by performing a modulo operation based on a quantity of subframes of the first subset of subframes and a quantity of bits of the bitmap, and wherein a quantity of subframes of the second subset of subframes corresponds to an integer multiple of the quantity of bits of the bitmap;
• and
• determining the resource pool based on the second subset of subframes and on a plurality of repetitions of the bitmap.