Methods for determining minimum scheduling offset application delay
A method, system and apparatus for methods for determining minimum scheduling offset application delay are disclosed. According to one aspect, a method in a network node includes determining an application delay based at least in part on a first subcarrier spacing, SCS, associated with a scheduling component carrier bandwidth part, BWP, the application delay being associated with at least one of the first and second minimum scheduling offsets. According to another aspect, a method in a wireless device includes receiving an indication of an application delay from a network node, the application delay being based at least in part on a first subcarrier spacing, SCS, associated with a scheduling component carrier bandwidth part, BWP, and the application delay being associated with at least one of the first and second minimum scheduling offsets.
1. A method performed by a wireless device for transitioning between a first minimum scheduling offset and a second minimum scheduling offset in which multiple numerologies are applied, the method comprising:
receiving an indication of an application delay from a network node, the application delay being based at least in part on a first subcarrier spacing, SCS, associated with a scheduling component carrier bandwidth part, BWP, and the application delay being associated with at least one of the first and second minimum scheduling offsets, the application delay being based at least in part on a minimum feasible application delay, Z, and when an associated physical downlink control channel, PDCCH, monitoring occasion comes after a specific symbol within a slot, the minimum feasible application delay is increased by a specific amount; and
starting to apply the second minimum scheduling offset based at least in part on the received application delay.
2. A wireless device for transitioning between a first minimum scheduling offset and a second minimum scheduling offset in which multiple numerologies are applied, the wireless device comprising processing circuitry, the processing circuitry configured to cause the wireless device to:
receive an indication of an application delay from a network node, the application delay being based at least in part on a first subcarrier spacing, SCS, associated with a scheduling component carrier bandwidth part, BWP, and the application delay being associated with at least one of the first and second minimum scheduling offsets, the application delay being based at least in part on a minimum feasible application delay, Z, and when an associated physical downlink control channel, PDCCH, monitoring occasion comes after a specific symbol within a slot, the minimum feasible application delay is increased by a specific amount; and
start to apply the second minimum scheduling offset based at least in part on the received application delay.
3. The wireless device of claim 2 , wherein the application delay is further based at least in part on the first minimum scheduling offset, the first minimum scheduling offset being a currently applied minimum scheduling offset.
4. A method performed by a network node for transitioning between a first minimum scheduling offset and a second minimum scheduling offset in which multiple numerologies are applied, the method comprising:
determining an application delay based at least in part on a first subcarrier spacing, SCS, associated with a scheduling component carrier bandwidth part, BWP, the application delay being associated with at least one of the first and second minimum scheduling offsets, the application delay being based at least in part on a minimum feasible application delay, Z, and when an associated physical downlink control channel, PDCCH, monitoring occasion comes after a specific symbol within a slot, the minimum feasible application delay is increased by a specific amount.
5. The method of claim 4 , wherein determining the application delay comprises:
determining the application delay based additionally on the first minimum scheduling offset, the first minimum scheduling offset being a currently applied minimum scheduling offset.
6. The method of claim 4 , wherein determining the application delay for cross-carrier scheduling with a mixed numerology comprises:
when the first SCS associated with the scheduling component carrier BWP and a second subcarrier spacing, SCS, associated with a scheduled component carrier BWP are different, determining a normalized value for the first minimum scheduling offset of the scheduled component carrier BWP relative to the first SCS associated with the scheduling component carrier BWP.
7. The method of claim 6 , wherein the normalized value, minK′, is determined by:
min
K
′
=
min
K
·
2
μ
P
D
C
C
H
2
μ
P
D
S
C
H
wherein minK is a currently applied minimum scheduling offset;
μ PDCCH is associated with the first SCS, the first SCS being associated with a scheduling physical downlink control channel, PDCCH; and
μ PDSCH is associated with the second SCS, the second SCS being associated with a scheduled physical downlink shared channel, PDSCH.
8. The method of claim 4 , further comprising:
transmitting an indication of the determined application delay to a wireless device.
9. The method of claim 4 , wherein determining the application delay comprises:
determining the application delay based at least in part on a currently applied minimum scheduling offset in the scheduled component carrier BWP, the minimum feasible application delay, Z, of the scheduling component carrier BWP, the first SCS associated with the scheduling component carrier BWP and a second subcarrier spacing, SCS, associated with a scheduled component carrier BWP.
10. The method of claim 1 , wherein the specific amount is 1 slot.
11. The method of claim 1 , wherein the application delay is a currently applied minimum scheduling offset based at least in part on the first SCS associated with the scheduling component carrier BWP and a second subcarrier spacing, SCS, associated with a scheduled component carrier BWP.
12. The method of claim 1 , wherein the application delay indicates when to start applying the second minimum scheduling offset after a change indication is received by a wireless device, the change indication indicating to apply a new minimum scheduling offset.
13. The method of claim 12 , further comprising:
receiving the change indication via a downlink control information, DCI, message.
14. The method of claim 1 , wherein the application delay is based at least in part on a currently applied minimum scheduling offset in the scheduled component carrier BWP, the minimum feasible application delay, Z, of the scheduling component carrier BWP, the first SCS associated with the scheduling component carrier BWP and a second subcarrier spacing, SCS, associated with a scheduled component carrier BWP.
15. The method of claim 1 , wherein the application delay is further based at least in part on the first minimum scheduling offset, the first minimum scheduling offset being a currently applied minimum scheduling offset.
16. The method of claim 1 , wherein the application delay corresponds to converting between a second scheduling mode and a first scheduling mode, the first and second scheduling modes being different at least in the respective minimum scheduling offset.
17. The method of claim 16 , wherein the second scheduling mode is a cross-slot mode in which the minimum scheduling offset is greater than zero, and the first scheduling mode is a same slot mode in which the minimum scheduling offset parameter is equal to zero.
18. The method of claim 1 , wherein:
the application delay is for cross-carrier scheduling with a mixed numerology; and
when the first SCS associated with the scheduling component carrier BWP and a second subcarrier spacing, SCS, associated with a scheduled component carrier BWP are different, the application delay being further based at least in part on a normalized value for the first minimum scheduling offset of the scheduled component carrier BWP relative to the first SCS associated with the scheduling component carrier BWP.
19. The method of claim 18 , wherein the normalized value, minK′, is determined by:
min
K
′
=
min
K
·
2
μ
PDCCH
2
μ
PDSCH
wherein minK is a currently applied minimum scheduling offset;
μ PDCCH IS associated with the first SCS, the first SCS being associated with a scheduling physical downlink control channel, PDCCH; and
μ PDSCH IS associated with the second SCS, the second SCS being associated with a scheduled physical downlink shared channel, PDSCH.
20. The method of claim 1 , wherein the application delay is based at least in part on a type of physical downlink control channel, PDCCH, monitoring case.