Method and apparatus for measurement reference signal

Abstract

Methods and apparatuses for reference signal measurement. A user equipment (UE) includes a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive reference signal (RS) resource configuration information and at least two RSs. The processor is configured to measure at least one of the at least two RSs. A first RS of the at least two RSs is non-UE-specifically configured and a second RS of the at least two RSs is UE-specifically configured.

What is claimed: 
     
         1 . A user equipment (UE) in a wireless communication system, the UE comprising:
 a transceiver configured to:
 receive first information regarding a configuration of at least one semi-persistent channel state information-reference signal (CSI-RS) resource; 
 receive second information for activating the at least one semi-persistent CSI-RS resource; and 
 receive at least one CSI-RS through the at least one semi-persistent CSI-RS resource; and 
   a processor operably connected to the transceiver, the processor configured to determine CSI based on the at least one CSI-RS,   wherein the transceiver is further configured to:
 transmit the CSI; and 
 receive third information for deactivating the at least one semi-persistent CSI-RS resource. 
   
     
     
         2 . The UE of  claim 1 , wherein the second information comprises a media access control (MAC) control element (CE) for activating the at least one semi-persistent CSI-RS resource. 
     
     
         3 . The UE of  claim 2 , wherein the MAC CE comprises a bit sequence arranged in an octet-aligned format. 
     
     
         4 . The UE of  claim 1 , wherein the second information comprises information indicating the at least one semi-persistent CSI-RS resource. 
     
     
         5 . The UE of  claim 1 , wherein the at least one semi-persistent CSI-RS resource comprises a CSI RS resource for interference measurement. 
     
     
         6 . The UE of  claim 1 , wherein the CSI is transmitted based on aperiodic CSI reporting. 
     
     
         7 . A base station (BS) in a wireless communication system, the BS comprising:
 a processor; and   a transceiver operably connected to the processor, the transceiver configured to:
 transmit first information regarding a configuration of at least one semi-persistent channel state information-reference signal (CSI-RS) resource; 
 transmit second information for activating the at least one semi-persistent CSI-RS resource; 
 transmit at least one CSI-RS through the at least one semi-persistent CSI-RS resource; 
 receive CSI that is based on the at least one CSI-RS; and 
 transmit third information for deactivating the at least one semi-persistent CSI-RS resource. 
   
     
     
         8 . The BS of  claim 7 , wherein the second information comprises a media access control (MAC) control element (CE) for activating the at least one semi-persistent CSI-RS resource. 
     
     
         9 . The BS of  claim 8 , wherein the MAC CE comprises a bit sequence arranged in an octet-aligned format. 
     
     
         10 . The BS of  claim 7 , wherein the second information comprises information indicating the at least one semi-persistent CSI-RS resource. 
     
     
         11 . The BS of  claim 7 , wherein the at least one semi-persistent CSI-RS resource comprises a CSI RS resource for interference measurement. 
     
     
         12 . The BS of  claim 7 , wherein the CSI is transmitted based on aperiodic CSI reporting. 
     
     
         13 . A method for operating a user equipment (UE) in a wireless communication system, the method comprising:
 receiving first information regarding a configuration of at least one semi-persistent channel state information-reference signal (CSI-RS) resource;   receiving second information for activating the at least one semi-persistent CSI-RS resource;   receiving at least one CSI-RS through the at least one semi-persistent CSI-RS resource;   determining CSI based on the at least one CSI-RS;   transmitting the CSI; and   receiving third information for deactivating the at least one semi-persistent CSI-RS resource.   
     
     
         14 . The method of  claim 13 , wherein the second information comprises a media access control (MAC) control element (CE) for activating the at least one semi-persistent CSI-RS resource. 
     
     
         15 . The method of  claim 14 , wherein the MAC CE comprises a bit sequence arranged in an octet-aligned format. 
     
     
         16 . The method of  claim 13 , wherein the second information comprises information indicating the at least one semi-persistent CSI-RS resource. 
     
     
         17 . The method of  claim 13 , wherein the at least one semi-persistent CSI-RS resource comprises a CSI RS resource for interference measurement. 
     
     
         18 . The method of  claim 13 , wherein the CSI is transmitted based on aperiodic CSI reporting.