Medium access control (mac) signaling for reference signal activation and quasi co-location indication in wireless communication networks

Abstract

Techniques are provided to control the activation of resource sets via medium access control (MAC) signaling. In some aspect, a radio network node generates a MAC message comprising a first field indicating whether a second field is present, or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location (QCL) information. The radio network node then transmits the MAC message to a wireless device.

1 - 56 . (canceled) 
     
     
         57 . A method in a wireless device, the method comprising:
 receiving a medium access control (MAC) message from a radio network node, the MAC message comprising a first field indicating whether a second field is present or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location (QCL) information; and   performing an operation based on whether the second field is present or absent.   
     
     
         58 . The method of  claim 57 , wherein performing an operation comprises activating or deactivating one or more resource sets when the second field is present. 
     
     
         59 . The method of  claim 58 , wherein activating or deactivating one or more resource sets comprises activating or deactivating the one or more resource sets identified in the second field. 
     
     
         60 . The method of  claim 57 , wherein when the first field indicates that the second field is present, the third field comprises quasi co-location (QCL) information for each of the one or more resource sets identified in the second field. 
     
     
         61 . The method of  claim 57 , wherein the resource sets are measurement resource sets. 
     
     
         62 . The method of  claim 57 , wherein the QCL information comprise one or more synchronization signal block (SSB) indices. 
     
     
         63 . The method of  claim 57 , wherein performing an operation comprises updating QCL information for one or more resource sets with the QCL information comprised in the third field, when the second field is absent. 
     
     
         64 . The method of  claim 57 , wherein the first field further indicates whether a fourth field is present or absent in the MAC message. 
     
     
         65 . The method of  claim 64 , wherein, when the first field indicates that the fourth field is present, the fourth field indicates one or more Channel State Information (CSI) trigger states to be activated. 
     
     
         66 . The method of  claim 65 , further comprising activating the one or more CSI trigger states indicated by the fourth field. 
     
     
         67 . A wireless device comprising one or more transceivers and processing circuitry connected thereto, the processing circuitry configured to:
 receive a medium access control (MAC) message from a radio network node, the MAC message comprising a first field indicating whether a second field is present or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location (QCL) information; and   perform an operation based on whether the second field is present or absent.   
     
     
         68 . The wireless device of  claim 67 , wherein the processing circuitry is configured to activate or deactivate one or more resource sets when the second field is present and wherein the one or more resource sets are indicated by the second field. 
     
     
         69 . The wireless device of  claim 68 , wherein the third field indicates quasi co-location (QCL) information for each of the one or more resource sets identified in the second field. 
     
     
         70 . The method of  claim 67 , wherein the resource sets are measurement resource sets. 
     
     
         71 . The method of  claim 67 , wherein performing an operation comprises updating QCL information for one or more resource sets with the QCL information comprised in the third field, when the second field is absent. 
     
     
         72 . The method of  claim 67 , wherein the first field further indicates whether a fourth field is present or absent in the MAC message. 
     
     
         73 . The method of  claim 72 , wherein, when the first field indicates that the fourth field is present, the fourth field indicates one or more Channel State Information (CSI) trigger states to be activated. 
     
     
         74 . A method in a radio network node, the method comprising:
 determining one of activating or deactivating one or more resource sets and updating quasi co-location (QCL) information; and   sending a medium access control (MAC) message to a wireless device, the MAC message indicating one of activating or deactivating one or more resource sets and updating QCL information based on an indication given by a first field of the MAC message.   
     
     
         75 . The message of  claim 74 , wherein the first field indicates whether a second field is present or absent in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated. 
     
     
         76 . The method of  claim 74 , wherein the MAC message further comprises a third field comprising the QCL information.