Method for channel estimation and pilot reception for remote radio head (rrh) deployments and multi-antenna downlink mimo

Abstract

A method and apparatus for determining pilot information is disclosed. A wireless/transmit receive unit (WTRU) receives a plurality of high speed shared control channel (HS-SCCH) resources including radio resource control (RRC) configuration information for high speed downlink packet access (HSDPA), wherein the RRC configuration information includes dedicated pilot information associated with each received HS-SCCH resource. The WTRU detects a high speed downlink shared channel (HS-DSCH) radio network transmission identifier (H-RNTI) associated with the WTRU in one of the plurality of HS-SCCH resources. The WTRU determines pilot information, based on the dedicated pilot information and the one of the plurality of HS-SCCH resources, for a high speed physically downlink shared channel (HS-PDSCH) associated with the one of the plurality of HS-SCCH resources.

What is claimed: 
     
         1 . A method for determining pilot information in a wireless transmit/receive unit (WTRU), the method comprising:
 receiving a plurality of high speed shared control channel (HS-SCCH) resources including radio resource control (RRC) configuration information for high speed downlink packet access (HSDPA), wherein the RRC configuration information includes dedicated pilot information associated with each received HS-SCCH resource;   detecting a high speed downlink shared channel (HS-DSCH) radio network transmission identifier (H-RNTI) associated with the WTRU in one of the plurality of HS-SCCH resources; and   determining pilot information, based on the dedicated pilot information and the one of the plurality of HS-SCCH resources, for a high speed physically downlink shared channel (HS-PDSCH) associated with the one of the plurality of HS-SCCH resources.   
     
     
         2 . The method of  claim 1 , further comprising:
 determining a number of transport blocks in the associated HS-PDSCH and a number of layers for each transport block.   
     
     
         3 . The method of  claim 2 , wherein each transport block is carried using more than one layer. 
     
     
         4 . The method of  claim 2 , wherein a combination of the number of transport blocks and the number of layers is used to determine a number of pilots. 
     
     
         5 . The method of  claim 4 , wherein the WTRU determines the pilot information for each layer based on the determined number of layers and the associated HS-SCCH resource. 
     
     
         6 . The method of  claim 1 , wherein rank information and precoding weight information is received in the HS-SCCH. 
     
     
         7 . The method of  claim 1 , wherein the dedicated pilot information is a channelization code. 
     
     
         8 . The method of  claim 1 , wherein the dedicated pilot information is a base pilot resource index. 
     
     
         9 . The method of  claim 1 , further comprising:
 determining an HS-SCCH number associated with the one of the plurality of HS-SCCH resources.   
     
     
         10 . The method of  claim 9 , wherein the determining pilot information for the HS-PDSCH is based on the dedicated pilot information and the HS-SCCH number. 
     
     
         11 . A wireless transmit/receive unit (WTRU) for determining pilot information, the WTRU comprising:
 a receiver configured to receive a plurality of high speed shared control channel (HS-SCCH) resources including radio resource control (RRC) configuration information for high speed downlink packet access (HSDPA), wherein the RRC configuration information includes dedicated pilot information associated with each received HS-SCCH resource;   a processor configured to detect a high speed downlink shared channel (HS-DSCH) radio network transmission identifier (H-RNTI) associated with the WTRU in one of the plurality of HS-SCCH resources; and   the processor further configured to determine pilot information, the dedicated pilot information and the one of the plurality of HS-SCCH resources, for a high speed physically downlink shared channel (HS-PDSCH) associated with the one of the plurality of HS-SCCH resources.   
     
     
         12 . The WTRU of  claim 11 , wherein the processor is further configured to determine a number of transport blocks in the associated HS-PDSCH and a number of layers for each transport block. 
     
     
         13 . The WTRU of  claim 12 , wherein each transport block has more than one layer. 
     
     
         14 . The WTRU of  claim 12 , wherein a combination of the number of transport blocks and the number of layers is used to determine a number of pilots. 
     
     
         15 . The WTRU of  claim 14 , wherein the WTRU determines the pilot information for each layer based on the determined number of layers and the associated HS-SCCH resource. 
     
     
         16 . The WTRU of  claim 11 , wherein rank information and precoding weight information is received in HS-SCCH. 
     
     
         17 . The WTRU of  claim 11 , wherein the dedicated pilot information is a channelization code. 
     
     
         18 . The WTRU of  claim 11 , wherein the dedicated pilot information is a base pilot resource index. 
     
     
         19 . The WTRU of  claim 11 , wherein the processor is further configured to determine an HS-SCCH number associated with the one of the plurality of HS-SCCH resources. 
     
     
         20 . The WTRU of  claim 19 , wherein the determining pilot information for the HS-PDSCH is based on the dedicated pilot information and the HS-SCCH number.