Method and apparatus for determining broadcast beam weighted value in wireless communications system

An apparatus for determining a broadcast beam weighted value in a wireless communications system, comprising:

• a bus, a processor, a memory, a transmitter, a receiver, and an antenna system, wherein
• the bus is configured to be connected to the processor, the memory, the transmitter,the receiver, and the antenna system;
• the receiver is configured to cooperate with the processor to obtain an angle path loss spectrum P(θ) of a target cell at a current moment by obtaining a free space path loss function FreeSpacePL(d) and obtaining a location path loss value PL(θ,d) of the target cell at the current moment,
• wherein r is a maximum radius of the cell,
• wherein a value of FreeSpacePL(d) is a signal path loss value of a signal transmitted by a signal transmission apparatus in response to a distance between a signal receiving apparatus and the signal transmission apparatus being d in an unblocked cell,
• wherein a value of PL(θ,d) is a signal path loss value of a signal transmitted by the target base station in response to a direction of a receiving apparatus relative to the target base station being θ and a distance between the receiving apparatus and the target base station being d, and θ indicates the plurality of directions, and
• 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;
• the processor is configured to determine a beam angle power spectrum based on the angle path loss spectrum and determine that the angle path loss spectrum P(θ) is equal to Max0≤d≤r[FreeSpacePL(d)−PL(θ,d)],
• wherein the beam angle power spectrum comprises signal transmit powers of the target base station in the plurality of directions,
• wherein, in the beam angle power spectrum, a signal transmit power in a first direction in the angle path loss spectrum is larger than in a second direction in the angle path loss spectrum, and
• wherein a signal path loss value in the first direction is relatively larger than a signal path loss value in the second direction;
• and
• determine a broadcast beam weighted value based on the beam angle power spectrum;
• the antenna system is configured to form a target broadcast beam based on the broadcast beam weighted value;
• and
• the memory is configured to store a program, the angle path loss spectrum, and the beam angle power spectrum.

A non-transitory computer-readable storage medium,

• comprising processor-executable instructions, which when executed cause a processor of a computer to implement operations including:
• obtaining an angle path loss spectrum P(θ) of a target cell at a current moment by obtaining a free space path loss function FreeSpacePL(d), obtaining a location path loss value PL(θ,d) of the target cell at the current moment and determining that the angle path loss spectrum P(θ) is equal to Max0≤d≤r[FreeSpacePL(d)−PL(θ,d)],
• wherein r is a maximum radius of the cell,
• wherein a value of FreeSpacePL(d) is a signal path loss value of a signal transmitted by a signal transmission apparatus in response to a distance between a signal receiving apparatus and the signal transmission apparatus being d in an unblocked cell,
• wherein a value of PL(θ,d) is a signal path loss value of a signal transmitted by the target base station in response a direction of a receiving apparatus relative to the target base station being θ and a distance between the receiving apparatus and the target base station being d, and θ indicates the plurality of directions, and,
• 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;
• 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.