A method performed by an apparatus for determining a broadcast beam weighted value in a wireless communications system, comprising: obtaining an angle path loss spectrum of a target cell at a current moment, wherein the angle path loss spectrum comprises signal path loss values of a target base station in the target cell in a plurality of directions, and comprises: obtaining a free space path loss function FreeSpacePL(d), wherein a value of FreeSpacePL(d) is a signal path loss value of a signal transmitted by a signal transmission apparatus when a distance between a signal receiving apparatus and the signal transmission apparatus is d in an unblocked cell; obtaining a location path loss value PL(θ,d) of the target cell at the current moment, wherein a value of PL(θ,d) is a signal path loss value of a signal transmitted by the target base station when a direction of a receiving apparatus relative to the target base station is θ and a distance between the receiving apparatus and the target base station is d, and θ is used to indicate the plurality of directions; and determining that the angle path loss spectrum P(θ) is equal to a maximum value Max 0 ≤ d ≤ r [FreeSpacePL(d) - PL(θ,d)], when d fall within a range [0, r], wherein r is a maximum radius of the cell; determining a beam angle power spectrum based on the angle path loss spectrum, wherein the beam angle power spectrum comprises signal transmit powers of the target base station in the plurality of directions, and in the beam angle power spectrum, a signal transmit power in a direction with a relatively large signal path loss value in the angle path loss spectrum is relatively large; determining a broadcast beam weighted value based on the beam angle power spectrum; and forming a target broadcast beam based on the broadcast beam weighted value. obtaining an angle path loss spectrum of a target cell at a current moment, wherein the angle path loss spectrum comprises signal path loss values of a target base station in the target cell in a plurality of directions, and comprises: obtaining a free space path loss function FreeSpacePL(d), wherein a value of FreeSpacePL(d) is a signal path loss value of a signal transmitted by a signal transmission apparatus when a distance between a signal receiving apparatus and the signal transmission apparatus is d in an unblocked cell; obtaining a location path loss value PL(θ,d) of the target cell at the current moment, wherein a value of PL(θ,d) is a signal path loss value of a signal transmitted by the target base station when a direction of a receiving apparatus relative to the target base station is θ and a distance between the receiving apparatus and the target base station is d, and θ is used to indicate the plurality of directions; and determining that the angle path loss spectrum P(θ) is equal to a maximum value Max 0 ≤ d ≤ r [FreeSpacePL(d) - PL(θ,d)], when d fall within a range [0, r], wherein r is a maximum radius of the cell; obtaining a free space path loss function FreeSpacePL(d), wherein a value of FreeSpacePL(d) is a signal path loss value of a signal transmitted by a signal transmission apparatus when a distance between a signal receiving apparatus and the signal transmission apparatus is d in an unblocked cell; obtaining a location path loss value PL(θ,d) of the target cell at the current moment, wherein a value of PL(θ,d) is a signal path loss value of a signal transmitted by the target base station when a direction of a receiving apparatus relative to the target base station is θ and a distance between the receiving apparatus and the target base station is d, and θ is used to indicate the plurality of directions; and determining that the angle path loss spectrum P(θ) is equal to a maximum value Max 0 ≤ d ≤ r [FreeSpacePL(d) - PL(θ,d)], when d fall within a range [0, r], wherein r is a maximum radius of the cell; determining a beam angle power spectrum based on the angle path loss spectrum, wherein the beam angle power spectrum comprises signal transmit powers of the target base station in the plurality of directions, and in the beam angle power spectrum, a signal transmit power in a direction with a relatively large signal path loss value in the angle path loss spectrum is relatively large; determining a broadcast beam weighted value based on the beam angle power spectrum; and forming a target broadcast beam based on the broadcast beam weighted value.