Method and device to improve reception/transmission reliability, and provide communication flexibility and efficiency

A base station, comprising:

• transmission circuitry configured to transmit, to a user equipment (UE), a physical downlink control channel (PDCCH) with a first downlink control information (DCI) format, wherein the first DCI format schedules a physical uplink shared channel (PUSCH) transmission;
• and
• control circuitry configured to;
• perform a PUSCH reception in a case that intra-slot frequency hopping is not enabled for the PUSCH transmission and a PUSCH repetition Type B is not applied to the PUSCH transmission, such that a first channel, over which a first symbol on an antenna port used for an uplink transmission is conveyed, is inferable, by the base station, from a second channel, over which a second symbol on the same antenna port is conveyed, in a case that the first symbol and the second symbol correspond to the same slot, and
• perform the PUSCH reception in a case that the PUSCH repetition Type B is applied to the PUSCH transmission, such that the first channel, over which the first symbol on an antenna port used for an uplink transmission is conveyed, is inferable, by the base station, from the second channel, over which the second symbol on the same antenna port is conveyed, in a case that the first symbol and the second symbol correspond to a same actual repetition of the PUSCH transmission.

A communication method by a user equipment (UE), comprising:

• receiving, from a base station, a physical downlink control channel (PDCCH) with a first downlink control information (DCI) format, wherein the first DCI format schedules a physical uplink shared channel (PUSCH) transmission;
• performing the PUSCH transmission, in a case that intra-slot frequency hopping is not enabled for the PUSCH transmission and a PUSCH repetition Type B is not applied to the PUSCH transmission, such that a first channel, over which a first symbol on an antenna port used for an uplink transmission is conveyed, is inferable, by the base station, from a second channel, over which a second symbol on the same antenna port is conveyed, in a case that the first symbol and the second symbol correspond to the same slot;
• and
• performing the PUSCH transmission in a case that the PUSCH repetition Type B is applied to the PUSCH transmission, such that the first channel, over which the first symbol on an antenna port used for an uplink transmission is conveyed, is inferable, by the base station, from the second channel, over which the second symbol on the same antenna port is conveyed, in a case that the first symbol and the second symbol correspond to a same actual repetition of the PUSCH transmission.