Multi-channel beamforming method and apparatus, and storage medium

An apparatus, comprising:

• a processor;
• and
• a memory coupled to the processor, wherein the memory stores instructions that, when executed by the processor, causes the apparatus to perform operations comprising:
• determining a target downlink positive polarization beam and a target downlink negative polarization beam based on M weight sets, wherein each weight set of the M weight sets comprises a phase weight set and an amplitude weight set, different weight sets of the M weight sets comprise a same amplitude weight set, different weight sets of the M weight sets comprise different phase weight sets, and, for each weight set of the M weight sets, both a quantity of phase weights in the respective phase weight set and a quantity of amplitude weights in the respective amplitude weight set are determined based on a quantity of a plurality of channels, wherein M is an even number greater than 0, and wherein the M weight sets are preset;
• and
• obtaining a target downlink signal based on the target downlink positive polarization beam and the target downlink negative polarization beam;
• wherein determining the target downlink positive polarization beam and the target downlink negative polarization beam based on the M weight sets comprises:
• periodically scanning uplink beams;
• determining energy values of all users on the uplink beams in each period, wherein the energy values comprise an uplink positive polarization energy value and an uplink negative polarization energy value;
• determining a target uplink positive polarization beam and a target uplink negative polarization beam based on the energy values and a positive-negative polarization orthogonal requirement;
• determining the target downlink positive polarization beam based on the target uplink positive polarization beam;
• and
• determining the target downlink negative polarization beam based on the target uplink negative polarization beam.

A non-transitory computer-readable storage medium storing a program that is executable by one or more processors, the program including instructions for:

• determining a target downlink positive polarization beam and a target downlink negative polarization beam based on M weight sets, wherein each weight set of the M weight sets comprises a phase weight set and an amplitude weight set, different weight sets of the M weight sets comprise a same amplitude weight set, different weight sets of the M weight sets comprise different phase weight sets, and for each weight set of the M weight sets both a quantity of phase weights in the respective phase weight set and a quantity of amplitude weights in the respective amplitude weight set are determined based on a quantity of a plurality of channels, wherein M is an even number greater than 0, and the M weight sets are preset;
• and
• obtaining a target downlink signal based on the target downlink positive polarization beam and the target downlink negative polarization beam;
• wherein determining the target downlink positive polarization beam and the target downlink negative polarization beam based on the M weight sets comprise instructions for:
• performing beamforming on a to-be-transmitted signal based on the M weight sets, to obtain M beams, wherein the M weight sets comprise N positive polarization weight sets and N negative polarization weight sets, each positive polarization weight set of the N positive polarization weight sets comprises a positive polarization phase weight set, each negative polarization weight set of the N negative polarization weight sets comprises a negative polarization phase weight set, each positive polarization weight set of the N positive polarization weight sets corresponds to one positive polarization beam, and each negative polarization weight set of the N negative polarization weight sets corresponds to one negative polarization beam, wherein M is twice N;
• calculating a sum of dedicated physical control channel (DPCCH) transmit powers of all users corresponding to each of the M beams, wherein a sum of DPCCH transmit powers of all users corresponding to the one positive polarization beam is a sum of positive polarization DPCCH transmit powers, and a sum of DPCCH transmit powers of all users corresponding to the one negative polarization beam is a sum of negative polarization DPCCH transmit powers;
• determining a beam corresponding to a smallest sum of positive polarization DPCCH transmit powers in N sums of positive polarization DPCCH transmit powers as the target downlink positive polarization beam;
• and
• determining, based on the target downlink positive polarization beam and N sums of negative polarization DPCCH transmit powers, the target downlink negative polarization beam paired with the target downlink positive polarization beam.