Default spatial relation for physical uplink shared channel transmissions
A base station may transmit to a wireless device one or more configuration parameters. The one or more configuration parameters indicate: one or more physical uplink control channel (PUCCH) resources, and a default beam is used for physical uplink shared channel (PUSCH) transmissions. The bases station may transmit to the wireless device downlink control information (DCI), with DCI format 0_0, scheduling a PUSCH. The base station may receive from the wireless device, via the PUSCH, a transport block according to a default spatial relation in response to: a DCI format of the DCI being the DCI format 0_0, the configuration parameters indicating that the default beam is used, each PUCCH resource of the one or more PUCCH resources not being configured with a spatial relation, and the wireless device being in a radio resource control (RRC) connected mode.
1. A method comprising:
receiving, by a wireless device from a base station, one or more configuration parameters indicating:
one or more physical uplink control channel (PUCCH) resources; and
a default beam is used for physical uplink shared channel (PUSCH) transmissions;
receiving downlink control information (DCI), with DCI format 0_0, scheduling a PUSCH; and
transmitting, via the PUSCH, a transport block according to a default spatial relation in response to:
a DCI format of the DCI being the DCI format 0_0;
the one or more configuration parameters indicating that the default beam is used;
each PUCCH resource of the one or more PUCCH resources not being configured with a spatial relation; and
the wireless device being in a radio resource control (RRC) connected mode.
2. The method of claim 1 , wherein the DCI:
comprises an uplink grant for the PUSCH; and
does not comprise spatial relation information for the uplink grant.
3. The method of claim 1 , further comprising transmitting, by the wireless device to the base station, the transport block with a spatial domain transmission filter determined based on the default spatial relation.
4. The method of claim 3 , wherein:
the default spatial relation is determined based on one or more downlink reference signals; and
the one or more downlink references signals are:
one or more channel state information reference signals (CSI-RSs); or
one or more synchronization signal blocks (SSBs).
5. The method of claim 1 , wherein the one or more configured parameters are received in one or more radio resource control (RRC) messages.
6. The method of claim 5 , wherein the wireless device is in RRC connected mode when the one or more RRC messages are received.
7. The method of claim 1 , wherein the one or more configuration parameters further indicate one or more control resource sets (coresets) are quasi co-located with one or more downlink reference signals.
8. A method comprising:
transmitting, by a base station to a wireless device, one or more configuration parameters indicating:
one or more physical uplink control channel (PUCCH) resources; and
a default beam is used for physical uplink shared channel (PUSCH) transmissions;
transmitting, to the wireless device, downlink control information (DCI), with DCI format 0_0, scheduling a PUSCH; and
receive, from the wireless device via the PUSCH, a transport block according to a default spatial relation in response to:
a DCI format of the DCI being the DCI format 0_0;
the one or more configuration parameters indicating that the default beam is used;
each PUCCH resource of the one or more PUCCH resources not being configured with a spatial relation; and
the wireless device being in a radio resource control (RRC) connected mode.
9. The method of claim 8 , wherein the DCI:
comprises an uplink grant for the PUSCH; and
does not comprise spatial relation information for the uplink grant.
10. The method of claim 8 , further comprising the wireless device the transmitting the transport block with a spatial domain transmission filter determined based on the default spatial relation.
11. The method of claim 10 , wherein:
the default spatial relation is determined based on one or more downlink reference signals; and
the one or more downlink references signals are:
one or more channel state information reference signals (CSI-RSs); or
one or more synchronization signal blocks (SSBs).
12. The method of claim 8 , wherein the one or more configuration parameters are transmitted in one or more radio resource control (RRC) messages.
13. The method of claim 12 , wherein the wireless device is in RRC connected mode when the one or more RRC messages are transmitted.
14. The method of claim 8 , wherein the one or more configuration parameters further indicate one or more control resource sets (coresets) are quasi co-located with one or more downlink reference signals.
15. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a base station, cause the base station to:
transmit, to a wireless device, one or more configuration parameters indicating:
one or more physical uplink control channel (PUCCH) resources; and
a default beam is used for physical uplink shared channel (PUSCH) transmissions;
transmit, to the wireless device, downlink control information (DCI), with DCI format 0_0, scheduling a PUSCH; and
receive, from the wireless device via the PUSCH, a transport block according to a default spatial relation in response to:
a DCI format of the DCI being the DCI format 0_0;
the one or more configuration parameters indicating that the default beam is used;
each PUCCH resource of the one or more PUCCH resources not being configured with a spatial relation; and
the wireless device being in a radio resource control (RRC) connected mode.
16. The non-transitory computer-readable medium of claim 15 , wherein the DCI:
comprises an uplink grant for the PUSCH; and
does not comprise spatial relation information for the uplink grant.
17. The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the wireless device to transmit the transport block with a spatial domain transmission filter determined based on the default spatial relation.
18. The non-transitory computer-readable medium of claim 17 , wherein:
the default spatial relation is determined based on one or more downlink reference signals; and
the one or more downlink references signals are:
one or more channel state information reference signals (CSI-RSs); or
one or more synchronization signal blocks (SSBs).
19. The non-transitory computer-readable medium of claim 15 , wherein the one or more configuration parameters are transmitted in one or more radio resource control (RRC) messages and the one or more configuration parameters further indicate one or more control resource sets (coresets) are quasi co-located with one or more downlink reference signals.
20. The non-transitory computer-readable medium of claim 19 , wherein the wireless device is in RRC connected mode when the one or more RRC messages are transmitted.