A method performed by an entity at the network side for configuring sidelink resources, applied to a 5th Generation Mobile Communication Technology, 5G, communication system, wherein the 5G communication system comprises a network side and a user equipment, wherein the method comprises: indicating, by the entity at the network side, time domain resources of a sidelink resource pool used for sidelink communication, wherein the sidelink resource pool comprises at least one slot in time domain, and time domain symbols in the at least one slot are used for the sidelink communication; and wherein the time domain resources of the sidelink resource pool are dedicated resources of the sidelink communication; characterized in that the indicating the time domain resources of the sidelink resource pool used for the sidelink communication comprises: indicating slots within a resource indication period by using a bitmap; wherein a corresponding slot indicated by a valid bit of the bitmap is the sidelink resource pool, and symbols in the corresponding slot indicated by the valid bit of the bitmap are the time domain resources of the sidelink resource pool; wherein the resource indication period comprises: a repetition time interval of configuration for the sidelink resource pool; and wherein the indicating the time domain resources of the sidelink resource pool used for the sidelink communication comprises: indicating sidelink symbols for the sidelink communication in the at least one slot contained in the sidelink resource pool, wherein the indicating the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: indicating a quantity n and a starting symbol #k of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap, wherein n is a positive integer; or predefining sidelink symbols in the at least one slot contained in the sidelink resource pool, wherein the predefining the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: predefining a quantity and a position of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap. indicating, by the entity at the network side, time domain resources of a sidelink resource pool used for sidelink communication, wherein the sidelink resource pool comprises at least one slot in time domain, and time domain symbols in the at least one slot are used for the sidelink communication; and wherein the time domain resources of the sidelink resource pool are dedicated resources of the sidelink communication; characterized in that the indicating the time domain resources of the sidelink resource pool used for the sidelink communication comprises: indicating slots within a resource indication period by using a bitmap; wherein a corresponding slot indicated by a valid bit of the bitmap is the sidelink resource pool, and symbols in the corresponding slot indicated by the valid bit of the bitmap are the time domain resources of the sidelink resource pool; wherein the resource indication period comprises: a repetition time interval of configuration for the sidelink resource pool; and wherein the indicating the time domain resources of the sidelink resource pool used for the sidelink communication comprises: indicating sidelink symbols for the sidelink communication in the at least one slot contained in the sidelink resource pool, wherein the indicating the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: indicating a quantity n and a starting symbol #k of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap, wherein n is a positive integer; or predefining sidelink symbols in the at least one slot contained in the sidelink resource pool, wherein the predefining the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: predefining a quantity and a position of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap. indicating sidelink symbols for the sidelink communication in the at least one slot contained in the sidelink resource pool, wherein the indicating the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: indicating a quantity n and a starting symbol #k of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap, wherein n is a positive integer; or predefining sidelink symbols in the at least one slot contained in the sidelink resource pool, wherein the predefining the sidelink symbols in the at least one slot contained in the sidelink resource pool comprises: predefining a quantity and a position of the sidelink symbols in each corresponding slot indicated by the valid bit of the bitmap.