Control signal configuration waveform type
Apparatuses, methods, and systems are disclosed for associating a control signaling configuration with a waveform type. One apparatus in a mobile communication network includes a processor and a transceiver that receives a configuration for control signaling. The processor associates a control signaling configuration with a waveform type, where at least two different waveform types are associated with different control signaling configurations. The transceiver receives from a radio access network a control signal transmission using the associated waveform type.
1 . A User Equipment (“UE”) for wireless communication comprising:
a memory; and
a processor coupled to the memory, the processor configured to cause the UE to:
receive a configuration for control channel signaling;
determine a waveform type for a respective control channel signal transmission based on the configuration, wherein at least two different waveform types are associated with different transmissions in a same slot;
receive, from a radio access network (“RAN”), the respective control channel signal transmission using the determined waveform type; and
determine, based on the determined waveform type and the received configuration, a corresponding waveform type for a shared channel signal scheduled by the control channel signal transmission.
2 . The UE of claim 1 , wherein, to receive the configuration for control channel signaling, the processor is configured to cause the UE to receive a plurality of configurations for multiple Control Resource Sets (“CORESETs”), each configuration associating a configured CORESET with a waveform type, wherein the at least two different waveform types are associated with the multiple CORESETs.
3 . The UE of claim 2 , wherein the processor is configured to cause the UE to associate a CORESET configuration and the waveform type corresponding to the configured CORESET with a receive beam, a transmit-receive point (“TRP”), or a combination thereof.
4 . The UE of claim 3 , wherein CORESET transmissions belonging to different TRPs are associated with different waveform types, wherein Physical Downlink Control Channel (“PDCCH”) transmissions from a same TRP are associated with a same waveform type.
5 . The UE of claim 2 , wherein the processor is configured to cause the UE to receive a Quasi-Co-Location (“QCL”) type-D assumption for the multiple CORESETs, wherein CORESET identifiers having different QCL Type-D assumptions are associated with different waveform types, wherein Physical Downlink Control Channel (“PDCCH”) transmissions with a same QCL Type-D assumption are associated with a same waveform type.
6 . The UE of claim 2 , wherein CORESET transmissions that overlap in a time domain are associated with a same waveform type.
7 . The UE of claim 1 , wherein, to receive the configuration for control channel signaling, the processor is configured to cause the UE to receive at least one search space configuration, each search space configuration for monitoring at least one Downlink Control Information (“DCI”) format, wherein different DCI formats are associated with different waveform types.
8 . The UE of claim 1 , wherein, to receive the respective control channel signal transmission, the processor is configured to cause the UE to receive a scheduling Downlink Control Information (“DCI”) using a specific waveform type, wherein the UE uses the specific waveform type to receive a downlink transmission scheduled by the scheduling DCI or to transmit an uplink transmission scheduled by the scheduling DCI or activated by the scheduling DCI.
9 . The UE of claim 8 , wherein the scheduling DCI contains an indication that the downlink transmission scheduled by the scheduling DCI or the uplink transmission scheduled or activated by the scheduling DCI is to use a same specific waveform type used to receive the scheduling DCI.
10 . The UE of claim 1 , wherein, to receive the respective control channel signal transmission, the processor is configured to cause the UE to receive a scheduling Downlink Control Information (“DCI”) containing a waveform type indication, wherein the UE uses the indicated waveform type to receive a downlink transmission scheduled by the scheduling DCI or to transmit an uplink transmission scheduled by the scheduling DCI or activated by the scheduling DCI.
11 . The UE of claim 10 , wherein the scheduling DCI is received using a first waveform type and the waveform indication indicates a second waveform type, wherein the UE does not switch waveforms when a delay requirement is not satisfied between a reception time of the scheduling DCI and a scheduled time of the downlink transmission or the uplink transmission scheduled by the scheduling DCI.
12 . The UE of claim 1 , wherein, to receive the respective control channel signal transmission, the processor is configured to cause the UE to receive a scheduling Downlink Control Information (“DCI”), wherein the UE uses a first waveform type to receive a downlink transmission scheduled by the scheduling DCI or to transmit an uplink transmission scheduled by the scheduling DCI, the first waveform type being associated with a precoding granularity size of a precoding resource block group.
13 . The UE of claim 1 , wherein, to receive the respective control channel signal transmission, the processor is configured to cause the UE to receive a single scheduling Downlink Control Information (“DCI”) that schedules multiple transmission occasions, wherein the processor is further configured to cause the UE to switch a waveform type used for different ones of the multiple transmission occasions.
14 . The UE of claim 13 , wherein the multiple transmission occasions are of a same physical channel, wherein the same physical channel comprises one of: a Physical Downlink Shared Channel (“PDSCH”) or a Physical Uplink Shared Channel (“PUSCH”).
15 . The UE of claim 13 , wherein the multiple transmission occasions are for different transmit-receive points (“TRPs”), wherein transmission occasions belonging to different TRPs are associated with different waveform types.
16 . The UE of claim 13 , wherein the processor is configured to cause the UE to receive a waveform switching pattern for retransmissions of a transport block (“TB”) during the multiple transmission occasions.
17 . The UE of claim 1 , wherein the processor is configured to cause the UE to receive a configuration for multiple bandwidth parts (“BWPs”), wherein, to receive the respective control channel signal transmission, the processor is configured to cause the UE to receive an indication to switch from a current active bandwidth part to a new active bandwidth part, wherein the processor is configured to cause the UE to switch a waveform type when switching bandwidth parts, wherein each bandwidth part is associated with a waveform type.
18 . The UE of claim 17 , wherein a different waveform type is configured for different subcarrier spacing values, wherein, to switch bandwidth parts, the processor is configured to cause the UE to switch to a different subcarrier value.
19 . A method performed by a User Equipment (“UE”), the method comprising:
receiving a configuration for control channel signaling;
determining a waveform type for a respective control channel signal transmission based on the configuration, wherein at least two different waveform types are associated with different transmissions in a same slot;
receiving, from a radio access network (“RAN”), the respective control channel signal transmission using the determined waveform type; and
determining, based on the determined waveform type and the received configuration, a corresponding waveform type for a shared channel transmission scheduled by the control channel signal transmission.
20 . A base station for wireless communication comprising:
a memory; and
a processor coupled to the memory, the processor configured to cause the base station to:
transmit, to a User Equipment (“UE”) a set of configurations for control channel signaling, wherein at least two different waveform types are associated with different configurations for control channel signaling;
transmit a respective control channel signal transmission using an associated waveform type,
wherein the associated waveform type and a respective configuration for control channel signaling indicate a corresponding waveform type for a shared channel transmission scheduled by the control channel signal transmission.