Short TTI patterns
There is disclosed a method of operating a terminal ( 10 ) in a wireless communication network, the method comprising receiving and/or transmitting according to a transmission time interval, TTI, configuration, the TTI configuration indicating at least one short transmitting time interval having between one or two and seven symbols of duration in a subframe. There are also disclosed related methods and devices.
1. A method in a terminal in a wireless communication network, the method comprising:
receiving, a Downlink Control Information, DCI, scheduling grant comprising a transmission time interval, TTI, configuration, wherein the DCI scheduling grant is received in a control region of a slot;
transmitting, signalling on a Physical Uplink Shared Channel, PUSCH, according to the TTI configuration,
wherein the TTI configuration schedules a short TTI for PUSCH transmission in the slot in which the DCI scheduling grant is received, and wherein the short TTI for PUSCH transmission has a length between 1 to 7 symbols.
2. The method in a terminal according to claim 1 , wherein the TTI configuration is received from a network node.
3. The method in a terminal according to claim 1 , wherein the TTI configuration further schedules resources for Demodulation Reference Signalling reference, DMRS, signalling associated with the PUSCH transmission.
4. The method in a terminal according to claim 1 , wherein the short TTI for PUSCH transmission has a length of 1 or 2 symbols.
5. A method in a network node in a wireless communication network, the method comprising:
transmitting, to a terminal, a Downlink Control Information, DCI, scheduling grant, in a control region of a slot, the DCI scheduling grant comprising a transmission time interval, TTI, configuration, for a Physical Uplink Shared Channel, PUSCH, transmission, wherein:
the TTI configuration schedules a short TTI for the PUSCH transmission in the slot in which the DCI scheduling grant is received,
the short TTI for PUSCH transmission has a length between 1 to 7 symbols; and
based on the TTI configuration, receiving signalling on a PUSCH from the terminal in the slot.
6. The method in a network node according to claim 5 , wherein the TTI configuration further schedules resources for Demodulation Reference Signalling reference, DMRS, signalling associated with the PUSCH transmission.
7. The method in a network node according to claim 5 , wherein the short TTI for PUSCH transmission has a length of 1 or 2 symbols.
8. A terminal for a wireless communication network, the terminal comprising:
processing circuitry configured to
receive, a Downlink Control Information, DCI, scheduling grant comprising a transmission time interval, TTI, configuration, wherein the DCI scheduling grant is received in a control region of a slot;
transmit, signalling on a Physical Uplink Shared Channel, PUSCH, according to the TTI configuration, and
wherein the TTI configuration schedules a short TTI for PUSCH transmission in the slot in which the DCI scheduling grant is received, and wherein the short TTI for PUSCH transmission has a length between 1 to 7 symbols.
9. The terminal according to claim 8 , wherein the TTI configuration is received from a network node.
10. The terminal according to claim 8 , wherein the TTI configuration further schedules resources for Demodulation Reference Signalling reference, DMRS, signalling associated with the PUSCH transmission.
11. The terminal according to claim 8 , wherein the short TTI for PUSCH transmission has a length of 1 or 2 symbols.
12. A network node for a wireless communication network, the network node comprising:
processing circuitry configured to:
transmit, to a terminal, a Downlink Control Information, DCI, scheduling grant, in a control region of a slot, the DCI scheduling grant comprising a transmission time interval, TTI, configuration, for a Physical Uplink Shared Channel, PUSCH, transmission, wherein:
the TTI configuration schedules a short TTI for the PUSCH transmission in the slot in which the DCI scheduling grant is received,
the short TTI for PUSCH transmission has a length between 1 to 7 symbols; and
based on the TTI configuration, receive signalling on a PUSCH from the terminal in the slot.
13. The network node according to claim 12 , wherein the TTI configuration further schedules resources for Demodulation Reference Signalling reference, DMRS, signalling associated with the PUSCH transmission.
14. The network node according to claim 12 , wherein the short TTI for PUSCH transmission has a length of 1 or 2 symbols.