User equipments, base stations and methods for a configurable downlink control information format

A user equipment (UE) comprising:

• receiving circuitry configured to receive a radio resource control (RRC) configuration comprising a first parameter used for defining a bit field size of an antenna ports field in a first downlink control information (DCI) format, a second parameter used for defining a bit field size of a carrier indicator field in the first DCI format, and a third parameter indicating a first allocation table used for defining a bit field size of a time domain allocation resource assignment in the first DCI format, wherein the first DCI format includes a 4-bit HARQ process number field;
• and
• transmitting circuitry configured to perform, based on a detection of the first DCI format according to the first parameter, the second parameter, and the third parameter, a first physical uplink shared channel (PUSCH) transmission, wherein a configuration identifier of the first PUSCH transmission is indicated by the HARQ process number field, wherein the receiving circuitry is further configured to receive an RRC configuration comprising a fourth parameter used for defining a bit field size of an antenna ports field in a second DCI format, a fifth parameter used for defining a bit field size of a carrier indicator field in the second DCI format, a sixth parameter used for defining a bit field size of a priority indicator field in the second DCI format, and a seventh parameter indicating a second allocation table used for defining a bit field size of a time domain allocation resource assignment in the second DCI format, and
• the transmitting circuitry is further configured to perform, based on a detection of the second DCI format according to the fourth information, the fifth information, the sixth information and the seventh information, a second PUSCH transmission.

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

• receiving a radio resource control (RRC) configuration comprising a first parameter used for defining a bit field size of an antenna ports field in a first downlink control information (DCI) format, a second parameter used for defining a bit field size of a carrier indicator field in the first DCI format, and a third parameter indicating a first allocation table used for defining a bit field size of a time domain allocation resource assignment in the first DCI format, wherein the first DCI format includes a 4-bit HARQ process number field;
• performing, based on a detection of the first DCI format according to the first parameter, the second parameter, and the third parameter, a first physical uplink shared channel (PUSCH) transmission, wherein a configuration identifier of the first PUSCH transmission is indicated by the HARQ process number field;
• receiving an RRC configuration comprising a fourth parameter used for defining a bit field size of an antenna ports field in a second DCI format, a fifth parameter used for defining a bit field size of a carrier indicator field in the second DCI format, a sixth parameter used for defining a bit field size of a priority indicator field in the second DCI format, and a seventh parameter indicating a second allocation table used for defining a bit field size of a time domain allocation resource assignment in the second DCI format;
• and
• performing, based on a detection of the second DCI format according to the fourth information, the fifth information, the sixth information and the seventh information, a second PUSCH transmission.

A base station comprising:

• transmitting circuitry configured to transmit a radio resource control (RRC) configuration comprising a first parameter used for defining a bit field size of an antenna ports field in a first downlink control information (DCI) format, a second parameter used for defining a bit field size of a carrier indicator field in the first DCI format, and a third parameter indicating a first allocation table used for defining a bit field size of a time domain allocation resource assignment in the first DCI format, wherein the first DCI format includes a 4-bit HARQ process number field;
• and
• receiving circuitry configured to receive a first physical uplink shared channel (PUSCH) transmission scheduled by the first DCI format according to the first parameter, the second parameter, and the third parameter, wherein a configuration identifier of the first PUSCH transmission is indicated by the HARQ process number field, wherein
• the transmitting circuitry is further configured to transmit an RRC configuration comprising a fourth parameter used for defining a bit field size of an antenna ports field in a second DCI format, a fifth parameter used for defining a bit field size of a carrier indicator field in the second DCI format, a sixth parameter used for defining a bit field size of a priority indicator field in the second DCI format, and a seventh parameter indicating a second allocation table used for defining a bit field size of a time domain allocation resource assignment in the second DCI format, and
• the receiving circuitry is further configured to receive a second PUSCH transmission scheduled by the second DCI format according to the fourth information, the fifth information, the sixth information and the seventh information.