A method performed by a device, the method comprising: receiving an indication from a network, the indication requesting the device to feedback channel state information corresponding to at least one selected from a first transmit time interval length operation and a second transmit time interval length operation; when the indication requests channel state information feedback for the first transmit time interval length operation: determining a first reference transmit time interval of a first transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the first reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the first reference transmit time interval; and when the indication requests channel state information feedback for the second transmit time interval length operation: determining a second reference transmit time interval of a second transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the second reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the second reference transmit time interval, wherein the first transmit time interval length operation has a shorter time duration than the second transmit time interval length operation. receiving an indication from a network, the indication requesting the device to feedback channel state information corresponding to at least one selected from a first transmit time interval length operation and a second transmit time interval length operation; when the indication requests channel state information feedback for the first transmit time interval length operation: determining a first reference transmit time interval of a first transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the first reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the first reference transmit time interval; and determining a first reference transmit time interval of a first transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the first reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the first reference transmit time interval; and a channel measurement to compute the channel state information using reference signals associated with the first reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the first reference transmit time interval; and when the indication requests channel state information feedback for the second transmit time interval length operation: determining a second reference transmit time interval of a second transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the second reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the second reference transmit time interval, determining a second reference transmit time interval of a second transmit time interval length based on the transmit time interval in which the indication is received; and deriving at least one selected from a channel measurement to compute the channel state information using reference signals associated with the second reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the second reference transmit time interval, a channel measurement to compute the channel state information using reference signals associated with the second reference transmit time interval, and an interference measurement to compute the channel state information using measurements made on resource elements associated with the second reference transmit time interval, wherein the first transmit time interval length operation has a shorter time duration than the second transmit time interval length operation.