Base station, user equipment, and methods for communicating transmission time interval control information

A method performed by a base station in a communication system, the method comprising:

• transmitting to a user equipment (UE), system information indicating a specific frequency region for control information including time domain resource assignment information, wherein the specific frequency region is contained within a part of an entire bandwidth in a frequency domain;
• identifying a transport block size;
• transmitting, to the UE, control information on the specific frequency region, wherein the time domain resource assignment information indicates a transmission time interval for a physical downlink shared channel (PDSCH) among a plurality of transmission time intervals;
• and
• transmitting, to the UE, the PDSCH associated with the transport block size in the number of symbols from a start symbol according to the time domain resource assignment information,
• wherein the transport block size is associated with the number of symbols,
• wherein the time domain resource assignment information indicates the start symbol of the transmission time interval,
• wherein the transmission time interval is defined based on the number of symbols from the start symbol,
• wherein a frequency region for transmission of the PDSCH in the transmission time interval is defined by the specific frequency region for the control information, in the frequency domain, and
• wherein the specific frequency region depends on a subcarrier spacing (SCS).

A user equipment (UE) in a communication system, the UE comprising:

• a transceiver;
• and
• at least one processor configured to:
• receive from a base station system information indicating a specific frequency region for control information including time domain resource assignment information, wherein the specific frequency region is contained within a part of an entire bandwidth in a frequency domain;
• receive, from a base station, control information on the specific frequency region, wherein the time domain resource assignment information indicates a transmission time interval for a physical downlink shared channel (PDSCH) among a plurality of transmission time intervals;
• identify a transport block size associated with a number of symbols;
• and
• receive, from the base station, the PDSCH associated with the transport block size in the number of symbols from a start symbol based on the time domain resource assignment information;
• wherein the time domain resource assignment information indicates the start symbol of the transmission time interval,
• wherein the transmission time interval is defined based on the number of symbols from the start symbol,
• wherein a frequency region for transmission of the PDSCH in the transmission time interval is defined by the specific frequency region for the control information, in the frequency domain, and
• wherein the specific frequency region depends on a subcarrier spacing (SCS).

A base station in a communication system, the base station comprising:

• a transceiver;
• and
• at least one processor configured to:
• identify a transport block size;
• transmit, to a user equipment (UE), system information indicating a specific frequency region for control information including time domain resource assignment information, wherein the specific frequency region is contained within a part of an entire bandwidth in a frequency domain,
• transmit, to the UE, control information on the specific frequency region, wherein the time domain resource assignment information indicates a transmission time interval for a physical downlink shared channel (PDSCH) among a plurality of transmission time intervals;
• and
• transmit, to the UE, the PDSCH associated with the transport block size in the number of symbols from a start symbol according to the time domain resource assignment information,
• wherein the transport block size is associated with the number of symbols,
• wherein the time domain resource assignment information indicates the start symbol of the transmission time interval,
• wherein the transmission time interval is defined based on the number of symbols from the start symbol,
• wherein a frequency region for transmission of the PDSCH in the transmission time interval is defined by the specific frequency region for the control information, in the frequency domain, and
• wherein the specific frequency region depends on a subcarrier spacing (SCS).