New patent application published for: TEMPORARY REFERENCE SIGNAL FOR FAST SECONDARY CELL ACTIVATION

TEMPORARY REFERENCE SIGNAL FOR FAST SECONDARY CELL ACTIVATION

Claims

1. (canceled)
2. An apparatus for wireless communication at a user equipment (UE), comprising: at least one processor; at least one memory coupled with the at least one processor; and instructions stored in the at least one memory and executable by the at least one processor to cause the UE to: receive a secondary cell activation message that indicates a secondary cell that is deactivated, and wherein the secondary cell activation message further indicates a slot location for a first plurality of slots, a slot offset which indicates a quantity of slots between the first plurality of slots and a second plurality of slots, and a set of non-zero power reference signal resources indicated by a tracking reference signal (TRS) information parameter, the set of non-zero power reference signal resources configured for aperiodic reference signals of the secondary cell for cell activation measurements of the secondary cell; identify, based at least in part on the secondary cell activation message, the slot location for the first plurality of slots that include a first portion of the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell, and the slot offset between the first plurality of slots and the second plurality of slots, the second plurality of slots that include a second portion of the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell, the slot offset comprising an indication of non-consecutive slots, and the second portion of the aperiodic reference signals using at least a same orthogonal frequency division multiplexing (OFDM) symbol allocation as the first portion of the aperiodic reference signals; and measure one or more characteristics of the secondary cell based at least in part on the aperiodic reference signals received via the set of non-zero power reference signal resources.
3. The apparatus of claim 2, wherein the secondary cell activation message is received in a medium access control (MAC) control element (CE), a downlink control information (DCI) message, or both.
4. The apparatus of claim 2, wherein the instructions are further executable by the at least one processor to cause the UE to: receive a configuration signal indicating the slot offset.
5. The apparatus of claim 4, wherein the configuration signal comprises downlink control information including a field indicating the slot offset, the slot location, or both.
6. The apparatus of claim 2, wherein the first plurality of slots comprises two consecutive slots and the second plurality of slots comprises two consecutive slots.
7. The apparatus of claim 2, wherein the instructions are further executable by the at least one processor to cause the UE to: identify the slot offset based at least in part on one or more of: a frequency range of the secondary cell, a frequency band of the secondary cell, a frequency band combination of the secondary cell, a subcarrier spacing of the secondary cell, a bandwidth part configuration of the secondary cell, a time-domain duplexing configuration of the secondary cell, or a combination thereof.
8. The apparatus of claim 2, wherein the instructions are further executable by the at least one processor to cause the UE to: transmit a UE capability message indicating a minimum slot offset value of the UE, wherein the slot offset is based at least in part on the UE capability message.
9. The apparatus of claim 8, wherein the instructions are further executable by the at least one processor to cause the UE to: identify the minimum slot offset value of the UE for at least one of a frequency range, a frequency band, a frequency band combination, a subcarrier spacing, a bandwidth part configuration, or a time domain duplexing configuration.
10. An apparatus for wireless communication at a primary cell, comprising: at least one processor; at least one memory coupled with the at least one processor; and instructions stored in the at least one memory and executable by the at least one processor to cause the primary cell to: identify, for a user equipment (UE), a slot location for a first plurality of slots carrying a first portion of aperiodic reference signals of a secondary cell for cell activation measurements of the secondary cell, and a slot offset between the first plurality of slots and a second plurality of slots, the second plurality of slots carrying a second portion of the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell, the slot offset comprising an indication of non-consecutive slots, and the second portion of the aperiodic reference signals using at least a same orthogonal frequency division multiplexing (OFDM) symbol allocation as the first portion of the aperiodic reference signals; and transmit, to the UE, a secondary cell activation message that indicates the secondary cell is to be activated at the UE in addition to the primary cell and triggers transmission of the aperiodic reference signals at the secondary cell according to the slot location and the slot offset, wherein the secondary cell activation message further indicates the slot location for the first plurality of slots, the slot offset which indicates a quantity of slots between the first plurality of slots and the second plurality of slots, and a set of non-zero power reference signal resources indicated by a tracking reference signal (TRS) information parameter, the set of non-zero power reference signal resources configured for the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell.
11. The apparatus of claim 10, wherein the secondary cell activation message is transmitted in a medium access control (MAC) control element (CE), a downlink control information (DCI) message, or both.
12. The apparatus of claim 10, wherein the instructions are further executable by the at least one processor to cause the primary cell to: transmit a configuration signal indicating the slot offset.
13. The apparatus of claim 12, wherein the configuration signal comprises downlink control information including a field indicating the slot offset, the slot location, or both.
14. The apparatus of claim 10, wherein the first plurality of slots comprises two consecutive slots and the second plurality of slots comprises two consecutive slots.
15. The apparatus of claim 10, wherein the instructions are further executable by the at least one processor to cause the primary cell to: identify the slot offset based at least in part on one or more of: a frequency range of the secondary cell, a frequency band of the secondary cell, a frequency band combination of the secondary cell, a subcarrier spacing of the secondary cell, a bandwidth part configuration of the secondary cell, a time-domain duplexing configuration of the secondary cell, or a combination thereof.
16. The apparatus of claim 10, wherein the instructions are further executable by the at least one processor to cause the primary cell to: receive a UE capability message indicating a minimum slot offset value of the UE, wherein the slot offset is based at least in part on the UE capability message.
17. The apparatus of claim 16, wherein the instructions are further executable by the at least one processor to cause the primary cell to: identify the minimum slot offset value of the UE for at least one of a frequency range, a frequency band, a frequency band combination, a subcarrier spacing, a bandwidth part configuration, or a time domain duplexing configuration.
18. A method for wireless communication at a user equipment (UE), comprising: receiving a secondary cell activation message that indicates a secondary cell that is deactivated, and wherein the secondary cell activation message further indicates a slot location for a first plurality of slots, a slot offset which indicates a quantity of slots between the first plurality of slots and a second plurality of slots, and a set of non-zero power reference signal resources indicated by a tracking reference signal (TRS) information parameter, the set of non-zero power reference signal resources configured for aperiodic reference signals of the secondary cell for cell activation measurements of the secondary cell; identifying, based at least in part on the secondary cell activation message, the slot location for the first plurality of slots that include a first portion of the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell, and the slot offset between the first plurality of slots and the second plurality of slots, the second plurality of slots that include a second portion of the aperiodic reference signals of the secondary cell for the cell activation measurements of the secondary cell, the slot offset comprising an indication of non-consecutive slots, and the second portion of the aperiodic reference signals using at least a same orthogonal frequency division multiplexing (OFDM) symbol allocation as the first portion of the aperiodic reference signals; and measuring one or more characteristics of the secondary cell based at least in part on the aperiodic reference signals received via the set of non-zero power reference signal resources.
19. The method of claim 18, wherein the secondary cell activation message is received in a medium access control (MAC) control element (CE), a downlink control information (DCI) message, or both.
20. The method of claim 18, further comprising: receiving a configuration signal indicating the slot offset.
21. The method of claim 20, wherein the configuration signal comprises downlink control information including a field indicating the slot offset, the slot location, or both.