A multi-user pairing method, wherein the method comprises: obtaining an actual downlink channel parameter of user equipment, UE, at a moment t0; calculating a correlation coefficient between the actual downlink channel parameter at the moment t0 and an actual downlink channel parameter of the UE at a moment t0- Δt, wherein Δt is less than or equal to a preset time length; if the correlation coefficient is less than a preset threshold, determining a predicted downlink channel parameter of the UE at a moment t1 based on the actual downlink channel parameter at the moment t0 and several consecutive actual downlink channel parameters that are adjacent to the actual downlink channel parameter at the moment t0 and that are before the moment t0, wherein the moment t1 is a sending moment after the moment t0; and performing a multi-user pairing operation based on the predicted downlink channel parameter at the moment t1, wherein the performing a multi-user pairing operation based on the predicted downlink channel parameter at the moment t1 comprises: generating a correction parameter based on the predicted downlink channel parameter at the moment t1 and the actual downlink channel parameter at the moment t0; and performing the multi-user pairing operation based on the correction parameter; wherein the correction parameter p meets: ρ t 1 = H t 1 H H t 0 2 H t 1 2, wherein H is the predicted downlink channel parameter at the moment t1, and H H is a conjugate transpose of the actual downlink channel parameter at the moment t0; or ρ ( t 1) = abs [[V H V], wherein V is a first single-user weight that is of the UE and that is calculated based on the actual downlink channel parameter at the moment t0, V is a second single-user weight that is of the UE and that is calculated based on the predicted downlink channel parameter H(ti) at the moment t1, and V H is a conjugate transpose of the second single-user weight V of the UE. obtaining an actual downlink channel parameter of user equipment, UE, at a moment t0; calculating a correlation coefficient between the actual downlink channel parameter at the moment t0 and an actual downlink channel parameter of the UE at a moment t0- Δt, wherein Δt is less than or equal to a preset time length; if the correlation coefficient is less than a preset threshold, determining a predicted downlink channel parameter of the UE at a moment t1 based on the actual downlink channel parameter at the moment t0 and several consecutive actual downlink channel parameters that are adjacent to the actual downlink channel parameter at the moment t0 and that are before the moment t0, wherein the moment t1 is a sending moment after the moment t0; and performing a multi-user pairing operation based on the predicted downlink channel parameter at the moment t1, wherein the performing a multi-user pairing operation based on the predicted downlink channel parameter at the moment t1 comprises: generating a correction parameter based on the predicted downlink channel parameter at the moment t1 and the actual downlink channel parameter at the moment t0; and performing the multi-user pairing operation based on the correction parameter; wherein the correction parameter p meets: ρ t 1 = H t 1 H H t 0 2 H t 1 2, wherein H is the predicted downlink channel parameter at the moment t1, and H H is a conjugate transpose of the actual downlink channel parameter at the moment t0; or ρ ( t 1) = abs [[V H V], wherein V is a first single-user weight that is of the UE and that is calculated based on the actual downlink channel parameter at the moment t0, V is a second single-user weight that is of the UE and that is calculated based on the predicted downlink channel parameter H(ti) at the moment t1, and V H is a conjugate transpose of the second single-user weight V of the UE. generating a correction parameter based on the predicted downlink channel parameter at the moment t1 and the actual downlink channel parameter at the moment t0; and performing the multi-user pairing operation based on the correction parameter; wherein the correction parameter p meets: ρ t 1 = H t 1 H H t 0 2 H t 1 2, wherein H is the predicted downlink channel parameter at the moment t1, and H H is a conjugate transpose of the actual downlink channel parameter at the moment t0; or ρ ( t 1) = abs [[V H V], wherein V is a first single-user weight that is of the UE and that is calculated based on the actual downlink channel parameter at the moment t0, V is a second single-user weight that is of the UE and that is calculated based on the predicted downlink channel parameter H(ti) at the moment t1, and V H is a conjugate transpose of the second single-user weight V of the UE. ρ t 1 = H t 1 H H t 0 2 H t 1 2, wherein H is the predicted downlink channel parameter at the moment t1, and H H is a conjugate transpose of the actual downlink channel parameter at the moment t0; or ρ ( t 1) = abs [[V H V], wherein V is a first single-user weight that is of the UE and that is calculated based on the actual downlink channel parameter at the moment t0, V is a second single-user weight that is of the UE and that is calculated based on the predicted downlink channel parameter H(ti) at the moment t1, and V H is a conjugate transpose of the second single-user weight V of the UE.