Ul scheduling timing in tdd with 1 ms tti and reduced processing time

A wireless device 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 wireless device is operable to:
• receive an uplink grant in a Transmission Time Interval, TTI, n;
• determine an uplink scheduling timing l based on a configured Time Division Duplexing, TDD, uplink/downlink configuration;
• and
• transmit, in a TTI n+l, an uplink transmission in accordance with the uplink grant received in the TTI n;
• wherein the uplink scheduling timing l is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3.

A method of operation of a radio access node in a cellular communications network, comprising:

• transmitting an uplink grant to a wireless device in a Transmission Time Interval, TTI, n;
• and
• receiving, in a TTI n+l, an uplink transmission from the wireless device in accordance with the uplink grant transmitted to the wireless device in the TTI n, where l is an uplink scheduling timing l and is a function of a configured Time Division Duplexing, TDD, uplink/downlink configuration;
• wherein the uplink scheduling timing l is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3.

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

• at least one transmitter and at least one receiver;
• 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 Transmission Time Interval, TTI, n;
• and
• receive, in a TTI n+l, an uplink transmission from the wireless device in accordance with the uplink grant transmitted to the wireless device in the TTI n, where l is an uplink scheduling timing and is a function of a configured Time Division Duplexing, TDD, uplink/downlink configuration;
• wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3.