Method and apparatus for transmitting control and data signals based on a short TTI in a wireless cellular communication system

A method of a base station in a wireless communication system, the method comprising:

• transmitting configuration information on a shortened transmission time interval (sTTI);
• receiving uplink control information on a short physical uplink control channel (SPUCCH);
• transmitting downlink control information scheduling uplink data on a downlink sTTI;
• and
• receiving the uplink data on an uplink sTTI,
• wherein, in a case that the uplink sTTI includes 7 symbols and the downlink sTTI includes 2 or 3 symbols, the downlink sTTI in which the downlink control information is transmitted is included in a set of predetermined downlink sTTIs,
• wherein the set of predetermined downlink sTTIs is determined based on whether the uplink data is transmitted in an uplink sTTI of index 0 or an uplink sTTI of index 1, and
• wherein, in a case that the uplink control information is received on sTTIs of index n and n+1 and uplink sTTIs include 2 or 3 symbols, a frequency resource of a last symbol of the sTTI of index n and a frequency resource of a first symbol of the sTTI of index n+1 are the same.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• receive configuration information on a shortened transmission time interval (sTTI),
• transmit uplink control information on a short physical uplink control channel (SPUCCH),
• receive downlink control information scheduling uplink data on a downlink sTTI, and
• transmit the uplink data on an uplink sTTI,
• wherein, in a case that the uplink sTTI includes 7 symbols and the downlink sTTI includes 2 or 3 symbols, the downlink sTTI in which the downlink control information is received is included in a set of predetermined downlink sTTIs,
• wherein the set of predetermined downlink sTTIs is determined based on whether the uplink data is transmitted in an uplink sTTI of index 0 or an uplink sTTI of index 1, and
• wherein, in a case that the uplink control information is transmitted on sTTIs of index n and n+1 and uplink sTTIs include 2 or 3 symbols, a frequency resource of a last symbol of the sTTI of index n and a frequency resource of a first symbol of the sTTI of index n+1 are the same.

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

• a transceiver;
• and
• a processor coupled to the transceiver and configured to:
• transmit configuration information on a shortened transmission time interval (sTTI),
• receive uplink control information on a short physical uplink control channel (SPUCCH),
• transmit downlink control information scheduling uplink data on a downlink sTTI, and
• receive the uplink data on an uplink sTTI,
• wherein, in a case that the uplink sTTI includes 7 symbols and the downlink sTTI includes 2 or 3 symbols, the downlink sTTI in which the downlink control information is transmitted is included in a set of predetermined downlink sTTIs,
• wherein the set of predetermined downlink sTTIs is determined based on whether the uplink data is transmitted in an uplink sTTI of index 0 or an uplink sTTI of index 1, and
• wherein, in a case that the uplink control information is received on sTTIs of index n and n+1 and uplink sTTIs include 2 or 3 symbols, a frequency resource of a last symbol of the sTTI of index n and a frequency resource of a first symbol of the sTTI of index n+1 are the same.