UL SCHEDULING TIMING WITH SHORT TTIs IN TDD

A wireless device in a cellular communications network, comprising:

• at least one transceiver;
• at least one processor;
• and
• memory comprising instructions executable by the at least one processor whereby the wireless device is operable to:
• receive an uplink grant in short Transmission Time Interval, sTTI, n;
• determine, based on a configured uplink/downlink configuration, an uplink scheduling timing l;
• and
• transmit, in a sTTI n+l, an uplink transmission in accordance with the uplink grant received in the sTTI n.

A radio access node for a cellular communications network, comprising:

• at least one transceiver;
• at least one processor;
• and
• memory comprising instructions executable by the at least one processor whereby the radio access node is operable to:
• transmit an uplink grant to a wireless device in a short Transmission Time Interval, sTTI, n;
• and
• receive, in a sTTI n+l, an uplink transmission from the wireless device in accordance with the uplink grant transmitted to the wireless device in the sTTI n, where l is an uplink scheduling timing l.