Method and apparatus for improving multi-user multiplexing performance, device, and storage medium

An apparatus, comprising:

• at least one processor, and a non-transitory memory storing instructions for execution by the at least one processor;
• wherein, when executed, the instructions cause the apparatus to perform operations comprising:
• configuring base sequence identifiers for a plurality of terminals by using radio resource control (RRC) signaling, wherein there is no orthogonality between base sequences indicated by the base sequence identifiers of the plurality of terminals;
• performing sounding reference signal (SRS) detection on the plurality of terminals based on a quasi-orthogonal sequence, to obtain channel information for sending an SRS by each terminal, wherein performing the SRS detection on the plurality of terminals based on the quasi-orthogonal sequence, to obtain the channel information for sending the SRS by each terminal comprises calculating a respective cross-correlation sequence for each pair of base sequences of the base sequences, and wherein the performing SRS detection on the plurality of terminals based on a quasi-orthogonal sequence, to obtain channel information for sending an SRS by each terminal comprises:
• preprocessing a received to-be-processed frequency domain signal that is at an SRS location, wherein the preprocessing comprises at least one of the following processing:
• performing, according to a formula (1) {tilde over (y)}(n)=w(n)*y(n), frequency domain filtering on the received to-be-processed frequency domain signal that is at the SRS location, wherein y(n) is the received to-be-processed frequency domain signal at the SRS location, w(n) is a frequency domain window coefficient, {tilde over (y)}(n) is a signal obtained through the frequency domain filtering, n=0, . . . , N is a channel estimation location index, and N is a channel estimation length;
• or
• performing, according to a formula (2) {tilde over (y)}=w*y, frequency domain filtering on the received to-be-processed frequency domain signal that is at the SRS location, wherein y is the received to-be-processed frequency domain signal at the SRS location, whose dimension is N×1;
• w is a frequency domain window coefficient whose dimension is N×N;
• {tilde over (y)} is a signal obtained through the frequency domain filtering, whose dimension is N×1;
• and N is a channel estimation length;
• and
• performing channel prediction based on the channel information of each terminal, to obtain a channel prediction result of each terminal.

A non-transitory memory storage medium comprising computer-executable instructions that, when executed, cause a first radio access network node to perform operations comprising:

• configuring base sequence identifiers for a plurality of terminals by using radio resource control (RRC) signaling, wherein there is no orthogonality between base sequences indicated by the base sequence identifiers of the plurality of terminals;
• performing sounding reference signal (SRS) detection on the plurality of terminals based on a quasi-orthogonal sequence, to obtain channel information for sending an SRS by each terminal, wherein performing the SRS detection on the plurality of terminals based on the quasi-orthogonal sequence, to obtain the channel information for sending the SRS by each terminal comprises calculating a respective cross-correlation sequence for each pair of base sequences of the base sequences, and wherein the performing SRS detection on the plurality of terminals based on a quasi-orthogonal sequence, to obtain channel information for sending an SRS by each terminal comprises:
• preprocessing a received to-be-processed frequency domain signal that is at an SRS location, wherein the preprocessing comprises at least one of the following processing:
• performing, according to a formula (1) {tilde over (y)}(n)=w(n)*y(n), frequency domain filtering on the received to-be-processed frequency domain signal that is at the SRS location, wherein y(n) is the received to-be-processed frequency domain signal at the SRS location, w(n) is a frequency domain window coefficient, {tilde over (y)}(n) is a signal obtained through the frequency domain filtering, n=0, . . . , N is a channel estimation location index, and N is a channel estimation length:
• or
• performing, according to a formula (2) {tilde over (y)}=w*y, frequency domain filtering on the received to-be-processed frequency domain signal that is at the SRS location, wherein y is the received to-be-processed frequency domain signal at the SRS location, whose dimension is N×1;
• w is a frequency domain window coefficient whose dimension is N×N;
• {tilde over (y)} is a signal obtained through the frequency domain filtering, whose dimension is N×1;
• and N is a channel estimation length;
• and
• performing channel prediction based on the channel information of each terminal, to obtain a channel prediction result of each terminal.