Systems and methods related to sub-slot physical uplink control channel (PUCCH) repetitions
Systems and methods related to sub-slot Physical Uplink Control Channel (PUCCH) repetitions are disclosed herein. In one embodiment, a method performed by a wireless communication device for sub-slot PUCCH repetitions comprises receiving one or more sub-slot PUCCH repetition configurations from a base station and transmitting two or more sub-slot PUCCH repetitions in accordance with one of the one or more sub-slot PUCCH repetition configurations. In this manner, sub-slot PUCCH transmissions can be made to be more reliable or have better coverage.
1 . A method performed by a wireless communication device for sub-slot Physical Uplink Control Channel, PUCCH, repetitions, the method comprising:
receiving one or more sub-slot PUCCH repetition configurations from a base station, wherein receiving the one or more sub-slot PUCCH repetition configurations comprises receiving a dynamic sub-slot PUCCH repetition configuration for a PUCCH transmission comprising the two or more sub-slot PUCCH repetitions; and
transmitting two or more sub-slot PUCCH repetitions in accordance with one of the one or more sub-slot PUCCH repetition configurations.
2 . The method of claim 1 , wherein receiving the dynamic sub-slot PUCCH repetition configuration comprises receiving downlink control information that schedules a Physical Downlink Shared Channel, PDSCH, transmission to the wireless communication device and includes the dynamic sub-slot PUCCH repetition configuration or an indication of the dynamic sub-slot PUCCH repetition configuration.
3 . The method of claim 1 , wherein transmitting the two or more sub-slot PUCCH repetitions comprises transmitting the two or more sub-slot PUCCH repetitions in accordance with the dynamic sub-slot PUCCH repetition configuration.
4 . The method of claim 2 , wherein the dynamic sub-slot PUCCH repetition configuration comprises a field in the downlink control information that indicates a number of sub-slot PUCCH repetitions.
5 . The method of claim 1 , further comprising:
receiving a configuration of a set of possible sub-slot PUCCH repetition configurations;
wherein the dynamic sub-slot PUCCH repetition configuration comprises a value that selects one of the set of possible sub-slot PUCCH repetition configurations as the dynamic sub-slot PUCCH repetition configuration.
6 . The method of claim 1 , wherein receiving the dynamic sub-slot PUCCH repetition configuration comprises receiving downlink control information that schedules a Physical Downlink Shared Channel, PDSCH, transmission to the wireless communication device and includes a PUCCH resource indicator, PRI, that indicates a particular PUCCH resource, wherein the dynamic sub-slot PUCCH repetition configuration comprises a pre-configured number of repetitions for the particular PUCCH resource.
7 . The method of claim 1 , wherein the dynamic sub-slot PUCCH repetition configuration comprises a number of repetitions defined in units of a slot.
8 . The method of claim 1 , wherein the dynamic sub-slot PUCCH repetition configuration comprises a number of repetitions defined in units of a sub-slot.
9 . The method of claim 2 , wherein the downlink control information further comprises an indication for HARQ ACK timing, and the indication for HARQ ACK timing is applied to a first sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions.
10 . The method of claim 9 , wherein subsequent sub-slot PUCCH repetitions from among the two or more sub-slot PUCCH repetitions occupy subsequent, consecutive available sub-slots.
11 . The method of claim 2 , wherein the one or more sub-slot PUCCH repetition configurations comprises two or more HARQ ACK timing values for the two or more sub-slot PUCCH repetitions, respectively.
12 . The method of claim 1 , wherein each sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions use a same resource allocation in the time domain across two or more consecutive, available sub-slots.
13 . The method of claim 1 , wherein each sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions is contained within a respective sub-slot.
14 . The method of claim 1 , wherein at least one sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions spans across a sub-slot boundary.
15 . The method of claim 1 , wherein at least one sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions spans across a slot boundary.
16 . The method of claim 1 , wherein a PUCCH resource for one of the two or more sub-slot PUCCH repetitions crosses a sub-slot boundary, and the one of the two or more sub-slot PUCCH repetitions is truncated to be within the sub-slot boundary.
17 . The method of claim 1 , wherein a PUCCH resource for one of the two or more sub-slot PUCCH repetitions crosses a slot boundary, and the one of the two or more sub-slot PUCCH repetitions is truncated to be within the slot boundary.
18 . The method of claim 1 , wherein the two or more sub-slot PUCCH repetitions are performed in a back-to-back manner without any symbols gaps between the two or more sub-slot PUCCH repetitions.
19 . The method of claim 1 , wherein at least one of the two or more sub-slot PUCCH repetitions is extended to reach a sub-slot boundary.
20 . The method of claim 1 , wherein transmitting the two or more sub-slot PUCCH repetitions comprises transmitting the two or more sub-slot PUCCH repetitions using frequency hopping.
21 . The method of claim 20 , wherein the frequency hopping is inter-sub-slot frequency hopping, inter-slot frequency hopping, or intra-sub-slot frequency hopping.
22 . The method of claim 20 , further comprising receiving a frequency hopping configuration that indicates whether or not to perform frequency hopping for sub-slot PUCCH repetitions, wherein transmitting the two or more sub-slot PUCCH repetitions using frequency hopping comprises transmitting the two or more sub-slot PUCCH repetitions using frequency hopping in accordance with the frequency hopping configuration.
23 . The method of claim 22 , wherein the frequency hopping configuration indicates inter-slot frequency hopping is to be applied for sub-slot PUCCH repetitions.
24 . The method of claim 22 , wherein the frequency hopping configuration comprises an inter-subslot frequency hopping configuration and an inter-slot frequency hopping configuration, and the wireless communication device ignores the inter-slot frequency hopping configuration responsive to the frequency hopping configuration comprising the inter-subslot frequency hopping configuration.
25 . The method of claim 1 , wherein transmitting the two or more sub-slot PUCCH repetitions comprises, for a sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions:
determining that there is a collision for the sub-slot PUCCH repetition; and
responsive to determining that there is a collision for the sub-slot PUCCH repetition, taking one or more actions to avoid the collision.
26 . The method of claim 25 , wherein the one or more actions comprise refraining from transmitting the sub-slot PUCCH repetition.
27 . The method of claim 26 , wherein the sub-slot PUCCH repetition is counted toward a number of sub-slot PUCCH repetitions transmitted.
28 . The method of claim 26 , wherein the sub-slot PUCCH repetition is not counted toward a number of sub-slot PUCCH repetitions transmitted.
29 . The method of claim 1 , wherein transmitting the two or more sub-slot PUCCH repetitions comprises, for a sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions:
determining the sub-slot PUCCH repetition crosses a slot boundary; and
responsive to determining that the sub-slot PUCCH repetition crosses a slot boundary, truncating the sub-slot PUCCH repetition to fit within the slot boundary.
30 . The method of claim 1 , wherein transmitting the two or more sub-slot PUCCH repetitions comprises, for a sub-slot PUCCH repetition from among the two or more sub-slot PUCCH repetitions:
determining the sub-slot PUCCH repetition crosses a slot boundary; and
responsive to determining that the sub-slot PUCCH repetition crosses a slot boundary, segmenting the sub-slot PUCCH repetition into a first segment that ends at or prior to the slot boundary and a second segment that start at or after the slot boundary.
31 . The method of claim 1 , wherein:
the one or more sub-slot PUCCH repetition configurations comprise one or more sub-slot PUCCH repetition configurations associated to one or more priority levels or one or more groups of priority levels, respectively;
the method further comprises receiving information that explicitly or implicitly indicates a priority level of the two or more sub-slot PUCCH repetitions; and
transmitting the two or more sub-slot PUCCH repetitions comprises transmitting the two or more sub-slot PUCCH repetitions in accordance with one of the one or more sub-slot PUCCH repetition configurations that is associated to the indicated priority level of the two or more sub-slot PUCCH repetitions or associated to a group of priority levels that includes the indicated priority level of the two or more sub-slot PUCCH repetitions.
32 . The method of claim 1 , wherein the one or more sub-slot PUCCH repetition configurations each comprise information that indicates a number of sub-slot PUCCH repetitions to be transmitted.
33 . A wireless communication device for sub-slot Physical Uplink Control Channel, PUCCH, repetitions, the wireless communication device comprising:
one or more transmitters;
one or more receivers; and
processing circuitry associated with the one or more transmitters and the one or more receiver, the processing circuitry configured to cause the wireless communication device to:
receive one or more sub-slot PUCCH repetition configurations from a base station, wherein receiving the one or more sub-slot PUCCH repetition configurations comprises receiving a dynamic sub-slot PUCCH repetition configuration for a PUCCH transmission comprising the two or more sub-slot PUCCH repetitions; and
transmit two or more sub-slot PUCCH repetitions in accordance with one of the one or more sub-slot PUCCH repetition configurations.
34 . A method performed by a base station for sub-slot Physical Uplink Control Channel, PUCCH, repetitions, the method comprising:
providing, to a wireless communication device, one or more sub-slot PUCCH repetition configurations, wherein providing the one or more sub-slot PUCCH repetition configurations comprises providing, to the wireless communication device, a dynamic sub-slot PUCCH repetition configuration for a PUCCH transmission comprising the two or more sub-slot PUCCH repetitions; and
receiving, from the wireless communication device, a PUCCH transmission in accordance with one of the one or more sub-slot PUCCH repetition configurations.
35 . A base station for sub-slot Physical Uplink Control Channel, PUCCH, repetitions, the base station comprising processing circuitry configured to cause the base station to:
provide, to a wireless communication device, one or more sub-slot PUCCH repetition configurations, wherein providing the one or more sub-slot PUCCH repetition configurations comprises providing, to the wireless communication device, a dynamic sub-slot PUCCH repetition configuration for a PUCCH transmission comprising the two or more sub-slot PUCCH repetitions; and
receive, from the wireless communication device, a PUCCH transmission in accordance with one of the one or more sub-slot PUCCH repetition configurations.