Systems and methods for slot offset information management
This disclosure relates generally to wireless communications and, more particularly, to systems and methods for communication of slot offset information prior to communicating downlink control information. In one embodiment, a method performed by a communication node includes: determining slot offset indication information that classifies a slot offset information set as either a first kind or a second kind based on at least one of: high-layer configuration signaling and predefined information, and sending the slot offset indication information to a communication device.
1. A method performed by a wireless device, comprising:
receiving slot offset indication information from a wireless communication node, wherein the slot offset indication information classifies a slot offset information set for scheduling an uplink transmission or a downlink reception as either a first kind set or a second kind set;
determining, based on the slot offset indication information, whether the slot offset information set is the first kind set or the second kind set, wherein:
the slot offset information set being determined as the first kind set indicates that slot offsets in the first kind set are greater than or equal to 0 and less than or equal to Nmax, wherein Nmax is a positive integer greater than 10, and
the slot offset information set being determined as the second kind set indicates that slot offsets in the second kind set are greater than or equal to a minimum threshold value and less than or equal to Nmax, wherein the minimum threshold value is greater than 0 and is indicated to the wireless device via a first radio resource control (RRC) message; and
performing the uplink transmission or the downlink reception according to the first kind set or the second kind set as determined based on the slot offset indication information.
2. The method of claim 1 , further comprising:
receiving at least one slot offset information value associated with the slot offset information set via downlink control information from the wireless communication node, wherein the at least one slot offset information value characterizes the offset as a number of time slots.
3. The method of claim 1 , wherein receiving the slot offset indication information comprises receiving the slot offset indication information via a Downlink Control Information (DCI) message from the wireless communication node.
4. The method of claim 1 , wherein, before receiving the slot offset indication information from the wireless communication node, the method further comprises:
receiving, from the wireless communication node, a second RRC message for configuring the slot offset information set.
5. The method of claim 1 , wherein each slot offset in the slot offset information set belongs to one of:
a first offset between a downlink control information time slot and a physical downlink shared channel time slot;
a second offset between the downlink control information time slot and a physical uplink shared channel time slot; or
a third offset between the downlink control information time slot and its associated aperiodic non zero power channel state information reference signal (NZP CSI-RS) resources set time slot.
6. The method of claim 1 , further comprising:
transmitting, to the wireless communication node, UE assistance information comprising a desired value for the minimum threshold value.
7. The method of claim 1 , wherein the minimum threshold value is associated with at least one of:
an identifier for a bandwidth part (BWP-id);
a bandwidth part transition latency;
a physical downlink shared channel decoding time;
a physical uplink shared channel preparation time;
a quasi-co-location type;
a sub carrier spacing; or
a capability of the wireless device.
8. A device comprising a memory for storing computer instructions and a processor in communication with the memory, wherein, when the processor executes the computer instructions, the processor is configured to cause the device to:
receive slot offset indication information from a wireless communication node, wherein the slot offset indication information classifies a slot offset information set for scheduling an uplink transmission or a downlink reception as either a first kind set or a second kind set;
determine, based on the slot offset indication information, whether the slot offset information set is the first kind set or the second kind set, wherein:
the slot offset information set being determined as the first kind set indicates that slot offsets in the first kind set are greater than or equal to 0 and less than or equal to Nmax, wherein Nmax is a positive integer greater than 10, and
the slot offset information set being determined as the second kind set indicates that slot offsets in the second kind set are greater than or equal to a minimum threshold value and less than or equal to Nmax, wherein the minimum threshold value is greater than 0 and is indicated to the device via a first radio resource control (RRC) message; and
perform the uplink transmission or the downlink reception according to the first kind set or the second kind set as determined based on the slot offset indication information.
9. The device of claim 8 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to:
receive at least one slot offset information value associated with the slot offset information set via downlink control information from the wireless communication node, wherein the at least one slot offset information value characterizes the offset as a number of time slots.
10. The device of claim 8 , wherein, when the processor is configured to cause the device to receive the slot offset indication information, he processor is configured to cause the device to receive the slot offset indication information via a Downlink Control Information (DCI) message from the wireless communication node.
11. The device of claim 8 , wherein, before the processor is configured to cause the device to receive the slot offset indication information from the wireless communication node, the processor is configured to further cause the device to:
receive, from the wireless communication node, a second RRC message for configuring the slot offset information set.
12. The device of claim 8 , wherein each slot offset in the slot offset information set belongs to one of:
a first offset between a downlink control information time slot and a physical downlink shared channel time slot;
a second offset between the downlink control information time slot and a physical uplink shared channel time slot; or
a third offset between the downlink control information time slot and its associated aperiodic non zero power channel state information reference signal (NZP CSI-RS) resources set time slot.
13. The device of claim 8 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to:
transmit, to the wireless communication node, UE assistance information comprising a desired value for the minimum threshold value.
14. The device of claim 8 , wherein the minimum threshold value is associated with at least one of:
an identifier for a bandwidth part (BWP-id);
a bandwidth part transition latency;
a physical downlink shared channel decoding time;
a physical uplink shared channel preparation time;
a quasi-co-location type;
a sub carrier spacing; or
a capability of the device.
15. A non-transitory storage medium for storing computer readable instructions, the computer readable instructions, when executed by a processor in a wireless device, causing the processor to:
receive slot offset indication information from a wireless communication node, wherein the slot offset indication information classifies a slot offset information set for scheduling an uplink transmission or a downlink reception as either a first kind set or a second kind set;
determine, based on the slot offset indication information, whether the slot offset information set is the first kind set or the second kind set, wherein:
the slot offset information set being determined as the first kind set indicates that slot offsets in the first kind set are greater than or equal to 0 and less than or equal to Nmax, wherein Nmax is a positive integer greater than 10, and
the slot offset information set being determined as the second kind set indicates that slot offsets in the second kind set are greater than or equal to a minimum threshold value and less than or equal to Nmax, wherein the minimum threshold value is greater than 0 and is indicated to the wireless device via a first radio resource control (RRC) message; and
perform the uplink transmission or the downlink reception according to the first kind set or the second kind set as determined based on the slot offset indication information.
16. The non-transitory storage medium of claim 15 , wherein the computer readable instructions further cause the processor to:
receive at least one slot offset information value associated with the slot offset information set via downlink control information from the wireless communication node, wherein the at least one slot offset information value characterizes the offset as a number of time slots.
17. The non-transitory storage medium of claim 15 , wherein, when the computer readable instructions cause the processor to receive the slot offset indication information, the computer readable instructions cause the processor to receive the slot offset indication information via a Downlink Control Information (DCI) message from the wireless communication node.
18. The non-transitory storage medium of claim 15 , wherein, before the computer readable instructions cause the processor to to receive the slot offset indication information from the wireless communication node, the computer readable instructions further cause the processor to:
receive, from the wireless communication node, a second RRC message for configuring the slot offset information set.
19. The non-transitory storage medium of claim 15 , wherein each slot offset in the slot offset information set belongs to one of:
a first offset between a downlink control information time slot and a physical downlink shared channel time slot;
a second offset between the downlink control information time slot and a physical uplink shared channel time slot; or
a third offset between the downlink control information time slot and its associated aperiodic non zero power channel state information reference signal (NZP CSI-RS) resources set time slot.
20. The non-transitory storage medium of claim 15 , wherein the computer readable instructions further cause the processor to:
transmit, to the wireless communication node, UE assistance information comprising a desired value for the minimum threshold value.