Cross-slot scheduling for cross numerology

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a scheduling offset threshold corresponding to a cross-slot grant. The UE may monitor a control channel in a first slot for the cross-slot grant, the control channel having a first numerology that is different than a second numerology of a shared channel and determine a beginning slot defined in the second numerology based on interpreting the scheduling offset threshold as being defined in the first numerology or the second numerology. The UE may then enter a low power state, or communicating a data transmission, during the beginning slot based on whether the cross-slot grant is detected

What is claimed is: 
     
         1 . A method for wireless communications by a user equipment (UE), comprising:
 identifying a scheduling offset threshold corresponding to a cross-slot grant;   monitoring a control channel in a first slot for the cross-slot grant, the control channel having a first numerology that is different than a second numerology of a shared channel;   determining a beginning slot defined in the second numerology based at least in part on the scheduling offset threshold; and   operating in a low power state, or communicating a data transmission, during the beginning slot based at least in part on whether the cross-slot grant is detected.   
     
     
         2 . The method of  claim 1 , wherein identifying the scheduling offset threshold comprises:
 retrieving a plurality of different candidate scheduling offset thresholds from local storage of the UE, the plurality of different candidate scheduling offset thresholds being preconfigured; and   receiving layer one control signaling indicating the scheduling offset threshold from the plurality of different candidate scheduling offset thresholds.   
     
     
         3 . The method of  claim 1 , further comprising:
 receiving the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as an uplink transmission on the shared channel in an active uplink bandwidth part having the second numerology.   
     
     
         4 . The method of  claim 1 , further comprising:
 receiving the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as a downlink transmission on the shared channel in a target downlink bandwidth part having the second numerology.   
     
     
         5 . The method of  claim 1 , wherein determining the beginning slot comprises:
 converting the scheduling offset threshold to a second scheduling offset threshold in the second numerology, the scheduling offset threshold being defined in the first numerology; and   determining the beginning slot based at least in part on the second scheduling offset threshold.   
     
     
         6 . The method of  claim 1 , further comprising:
 receiving the cross-slot grant via a first component carrier that is defined in the first numerology, the cross-slot grant scheduling the data transmission on the shared channel via a second component carrier that is defined in the second numerology.   
     
     
         7 . The method of  claim 1 , wherein the scheduling offset threshold indicates a number of slots defined in the second numerology. 
     
     
         8 . The method of  claim 1 , wherein the scheduling offset threshold indicates a number of symbol periods defined in the second numerology. 
     
     
         9 . A method for wireless communications by a base station, comprising:
 transmitting control signaling that indicates a scheduling offset threshold corresponding to a cross-slot grant;   transmitting, in a first slot, the cross-slot grant in a control channel that has a first numerology that is different than a second numerology of a shared channel;   determining a beginning slot in the second numerology based at least in part on the scheduling offset threshold; and   transmitting or receiving a data transmission during the beginning slot based at least in part on the cross-slot grant.   
     
     
         10 . The method of  claim 9 , wherein transmitting the control signaling comprises:
 transmitting layer one control signaling indicating the scheduling offset threshold from a plurality of different candidate scheduling offset thresholds.   
     
     
         11 . The method of  claim 9 , wherein transmitting the cross-slot grant comprises:
 transmitting the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as an uplink transmission on the shared channel in an active uplink bandwidth part having the second numerology.   
     
     
         12 . The method of  claim 9 , wherein transmitting the cross-slot grant comprises:
 transmitting the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as a downlink transmission on the shared channel in a target uplink bandwidth part having the second numerology.   
     
     
         13 . The method of  claim 9 , wherein determining the beginning slot comprises:
 converting the scheduling offset threshold to a second scheduling offset threshold in the second numerology, the scheduling offset threshold being defined in the first numerology; and   determining the beginning slot based at least in part on the second scheduling offset threshold.   
     
     
         14 . The method of  claim 9 , wherein transmitting the cross-slot grant comprises:
 transmitting the cross-slot grant via a first component carrier that is defined in the first numerology, the cross-slot grant scheduling the data transmission on the shared channel via a second component carrier that is defined in the second numerology.   
     
     
         15 . The method of  claim 9 , wherein the scheduling offset threshold indicates a number of slots defined in the first numerology. 
     
     
         16 . The method of  claim 9 , wherein the scheduling offset threshold indicates a number of symbol periods defined in the second numerology. 
     
     
         17 . An apparatus for wireless communications by a user equipment (UE), comprising:
 a processor,   memory coupled with the processor; and   instructions stored in the memory and executable by the processor to cause the apparatus to:
 identify a scheduling offset threshold corresponding to a cross-slot grant; 
 monitor a control channel in a first slot for the cross-slot grant, the control channel having a first numerology that is different than a second numerology of a shared channel; 
 determine a beginning slot defined in the second numerology based at least in part on the scheduling offset threshold; and 
 operate in a low power state, or communicate a data transmission, during the beginning slot based at least in part on whether the cross-slot grant is detected. 
   
     
     
         18 . The apparatus of  claim 17 , wherein the instructions to identify the scheduling offset threshold comprise instructions that are further executable by the processor to cause the apparatus to:
 retrieve a plurality of different candidate scheduling offset thresholds from local storage of the UE, the plurality of different candidate scheduling offset thresholds being preconfigured; and   receive layer one control signaling indicating the scheduling offset threshold from the plurality of different candidate scheduling offset thresholds.   
     
     
         19 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as an uplink transmission on the shared channel in an active uplink bandwidth part having the second numerology.   
     
     
         20 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as a downlink transmission on the shared channel in a target downlink bandwidth part having the second numerology.   
     
     
         21 . The apparatus of  claim 17 , wherein the instructions to determine the beginning slot comprise instructions that are further executable by the processor to cause the apparatus to:
 convert the scheduling offset threshold to a second scheduling offset threshold in the second numerology, the scheduling offset threshold being defined in the first numerology; and   determine the beginning slot based at least in part on the second scheduling offset threshold.   
     
     
         22 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive the cross-slot grant via a first component carrier that is defined in the first numerology, the cross-slot grant scheduling the data transmission on the shared channel via a second component carrier that is defined in the second numerology.   
     
     
         23 . The apparatus of  claim 17 , wherein the scheduling offset threshold indicates a number of slots defined in the second numerology. 
     
     
         24 . An apparatus for wireless communications by a base station, comprising:
 a processor,   memory coupled with the processor; and   instructions stored in the memory and executable by the processor to cause the apparatus to:
 transmit control signaling that indicates a scheduling offset threshold corresponding to a cross-slot grant; 
 transmit, in a first slot, the cross-slot grant in a control channel that has a first numerology that is different than a second numerology of a shared channel; 
 determine a beginning slot in the second numerology based at least in part on the scheduling offset threshold; and 
 transmit or receiving a data transmission during the beginning slot based at least in part on the cross-slot grant. 
   
     
     
         25 . The apparatus of  claim 24 , wherein the instructions to transmit the control signaling comprise instructions that are further executable by the processor to cause the apparatus to:
 transmit layer one control signaling indicating the scheduling offset threshold from a plurality of different candidate scheduling offset thresholds.   
     
     
         26 . The apparatus of  claim 24 , wherein the instructions to transmit the cross-slot grant comprise instructions that are further executable by the processor to cause the apparatus to:
 transmit the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as an uplink transmission on the shared channel in an active uplink bandwidth part having the second numerology.   
     
     
         27 . The apparatus of  claim 24 , wherein the instructions to transmit the cross-slot grant comprise instructions that are further executable by the processor to cause the apparatus to:
 transmit the cross-slot grant in a downlink bandwidth part having the first numerology, the cross-slot grant scheduling the data transmission as a downlink transmission on the shared channel in a target uplink bandwidth part having the second numerology.   
     
     
         28 . The apparatus of  claim 24 , wherein the instructions to determine the beginning slot comprise instructions that are further executable by the processor to cause the apparatus to:
 convert the scheduling offset threshold to a second scheduling offset threshold in the second numerology, the scheduling offset threshold being defined in the first numerology; and   determine the beginning slot based at least in part on the second scheduling offset threshold.   
     
     
         29 . The apparatus of  claim 24 , wherein the instructions to transmit the cross-slot grant comprise instructions that are further executable by the processor to cause the apparatus to:
 transmit the cross-slot grant via a first component carrier that is defined in the first numerology, the cross-slot grant scheduling the data transmission on the shared channel via a second component carrier that is defined in the second numerology.   
     
     
         30 . The apparatus of  claim 24 , wherein the scheduling offset threshold indicates a number of slots defined in the second numerology.