User equipments, base stations and methods for downlink semi-persistent scheduling

A base station apparatus comprising:

• receiving circuitry,
• transmitting circuitry,
• a processor,
• and a memory;
• wherein,
• the transmitting circuitry is configured to:
• transmit system information comprising first information of a first time domain resource assignment including a first slot offset (K0) for a physical downlink shared channel (PDSCH),
• transmit a UE-specific radio resource control (RRC) signal comprising second information of a second time domain resource assignment including a second slot offset (K0) for the PDSCH,
• transmit a physical downlink control channel (PDCCH), wherein
• the first time domain resource assignment for the PDSCH and the second time domain resource assignment for the PDSCH are each a time domain resource assignment based on a slot offset (K0) between a first slot at which the PDCCH is transmitted and a second slot at which the PDSCH is transmitted,
• perform, in response to transmitting the PDCCH, the transmission of the PDSCH based on one of:
• the first information or the second information;
• and
• use, in response to the transmission of the PDCCH, the second information for the transmission of the PDSCH when both the first information and the second information have been transmitted and the second information has overridden the first information.

A communication method of a user equipment (UE) comprising:

• receiving system information comprising first information of a first time domain resource assignment including a first slot offset (K0) for a physical downlink shared channel (PDSCH);
• receiving a UE-specific radio resource control (RRC) signal comprising second information of a second time domain resource assignment including a second slot offset (K0) for the PDSCH;
• and
• detecting a physical downlink control channel (PDCCH), wherein the first time domain resource assignment for the PDSCH and the second time domain resource assignment for the PDSCH are each a time domain resource assignment based on a slot offset (K0) between a first slot at which the PDCCH is detected and a second slot at which the PDSCH is received.

A communication method of a base station apparatus comprising:

• transmitting system information comprising first information of a first time domain resource assignment including a first slot offset (K0) for a physical downlink shared channel (PDSCH);
• transmitting a UE-specific radio resource control (RRC) signal comprising second information of a second time domain resource assignment including a second slot offset (K0) for the PDSCH;
• and
• transmitting a physical downlink control channel (PDCCH), wherein the first time domain resource assignment for the PDSCH and the second time domain resource assignment for the PDSCH are each a time domain resource assignment based on a slot offset (K0) between a first slot at which the PDCCH is transmitted and a second slot at which the PDSCH is transmitted.