A communication method based on non-orthogonal transmission performed by a user equipment, UE, the method comprising: • receiving downlink control information sent by a base station, wherein the downlink control information comprises a downlink control parameter of the UE and a downlink control parameter of a further UE, wherein the UE and the further UE belong to one associated user equipment group (step 301); • determining whether the downlink control information contains additionally an index of a radio network temporary identifier, RNTI; • in case the downlink control information additionally contains the index of the RNTI, determining that the UE is a cell-center UE and determining that the RNTI is a RNTI of the further UE; • receiving a data signal of the associated user equipment group sent by the base station, wherein the data signal of the associated user equipment group comprises a data signal of the UE and a data signal of the further UE (step 303); • in response to determining that the UE is the cell-center UE: ∘ determining, based on a preconfigured parameter comparison table, the RNTI of the further UE and a semi-statically configured parameter of the further UE according to the received index of the RNTI, wherein the semi-statically configured parameter is one of a transmission mode of the further UE or a single-user power allocation parameter of the further UE; ∘ obtaining a data signal of the further UE from the data signal of the associated user equipment group according to the RNTI, the downlink control parameter of the further UE and the semi-statically configured parameter; and ∘ obtaining a data signal of the UE from the data signal of the associated user equipment group according to the downlink control parameter of the UE and the data signal of the further UE (step 305). • receiving downlink control information sent by a base station, wherein the downlink control information comprises a downlink control parameter of the UE and a downlink control parameter of a further UE, wherein the UE and the further UE belong to one associated user equipment group (step 301); • determining whether the downlink control information contains additionally an index of a radio network temporary identifier, RNTI; • in case the downlink control information additionally contains the index of the RNTI, determining that the UE is a cell-center UE and determining that the RNTI is a RNTI of the further UE; • receiving a data signal of the associated user equipment group sent by the base station, wherein the data signal of the associated user equipment group comprises a data signal of the UE and a data signal of the further UE (step 303); • in response to determining that the UE is the cell-center UE: ∘ determining, based on a preconfigured parameter comparison table, the RNTI of the further UE and a semi-statically configured parameter of the further UE according to the received index of the RNTI, wherein the semi-statically configured parameter is one of a transmission mode of the further UE or a single-user power allocation parameter of the further UE; ∘ obtaining a data signal of the further UE from the data signal of the associated user equipment group according to the RNTI, the downlink control parameter of the further UE and the semi-statically configured parameter; and ∘ obtaining a data signal of the UE from the data signal of the associated user equipment group according to the downlink control parameter of the UE and the data signal of the further UE (step 305). ∘ determining, based on a preconfigured parameter comparison table, the RNTI of the further UE and a semi-statically configured parameter of the further UE according to the received index of the RNTI, wherein the semi-statically configured parameter is one of a transmission mode of the further UE or a single-user power allocation parameter of the further UE; ∘ obtaining a data signal of the further UE from the data signal of the associated user equipment group according to the RNTI, the downlink control parameter of the further UE and the semi-statically configured parameter; and ∘ obtaining a data signal of the UE from the data signal of the associated user equipment group according to the downlink control parameter of the UE and the data signal of the further UE (step 305).