Sidelink resource configuration method and apparatus, sidelink communication method and apparatus, base station, terminal, and storage medium

A sidelink resource configuration method includes: configuring or pre-configuring a sidelink resource pool for a user equipment (UE) to perform sidelink communications using a resource in the sidelink resource pool; where the sidelink resource pool uses a second time slot as granularity and includes resource blocks; and where a length of the second time slot is determined according to a second time-frequency parameter for defining the sidelink resource pool, the second time slot is determined by mapping from a first time slot included in a set of alternative resources according to a conversion relationship between the second time-frequency parameter and a first time-frequency parameter used by the set of alternative resources, and a length of the first time slot is determined according to the first time-frequency parameter.