Signaling of power information for mimo transmission in a wireless communication system

Abstract

An apparatus includes a processor and a memory coupled to the processor. The memory stores instructions executable by the processor to perform operations that include determining a particular number of transport blocks associated with user equipment (UE) based on a plurality of channel quality indicator (CQI) indices received from the UE.

What is claimed is: 
     
         1 . An apparatus comprising:
 a receiver configured to wirelessly receive a plurality of channel quality indicator (CQI) indices at a Node B from user equipment (UE); and   a processor configured to initiate wireless transmission of a particular number of transport blocks or fewer than the particular number of transport blocks to the UE from the Node B, the particular number of transport blocks associated with the UE and based on the plurality of CQI indices.   
     
     
         2 . The apparatus of  claim 1 , wherein the processor is further configured to initiate wireless transmission of power information related to a designated number of channelization codes to the UE from the Node B prior to receipt of the plurality of CQI indices, wherein the power information includes an offset value, and wherein the power information is indicative of a total power of the designated number of channelization codes. 
     
     
         3 . The apparatus of  claim 1 , further comprising a transmitter configured to wirelessly transmit the particular number of transport blocks or fewer than the particular number of transport blocks to the UE from the Node B, wherein the processor is further configured to scale sizes of the transport blocks based on a designated number of channelization codes and an available number of channelization codes. 
     
     
         4 . A method for wireless communication, the method comprising:
 wirelessly receiving a plurality of channel quality indicator (CQI) indices at a Node B from user equipment (UE); and   wirelessly transmitting a particular number of transport blocks or fewer than the particular number of transport blocks to the UE from the Node B, the particular number of transport blocks associated with the UE and based on a plurality of CQI.   
     
     
         5 . The method of  claim 4 , further comprising wirelessly transmitting power information related to a designated number of channelization codes to the UE from the Node B, wherein the power information includes an offset value, wherein each of the designated number of channelization codes is an orthogonal variable spreading factor (OVSF) code, and wherein wirelessly transmitting the particular number of transport blocks or fewer than the particular number of transport blocks comprises wirelessly transmitting the particular number of transport blocks to the UE from the Node B. 
     
     
         6 . The method of  claim 4 , wherein wirelessly transmitting the particular number of transport blocks or fewer than the particular number of transport blocks comprises wirelessly transmitting fewer than the particular number of transport blocks to the UE from the Node B. 
     
     
         7 . An apparatus comprising:
 means for wirelessly receiving a plurality of channel quality indicator (CQI) indices at a Node B from user equipment (UE); and   means for wirelessly transmitting a particular number of transport blocks or fewer than the particular number of transport blocks to the UE from the Node B, the particular number of transport blocks associated with the UE and based on the plurality of CQI indices.   
     
     
         8 . The apparatus of  claim 7 , wherein the particular number of transport blocks comprises a preferred number of transport blocks, and wherein the preferred number of transport blocks is one or two. 
     
     
         9 . A non-transitory computer-readable storage medium storing instructions executable by a computer to perform operations comprising:
 receiving a plurality of channel quality indicator (CQI) indices at a Node B from user equipment (UE); and   initiating wireless transmission of a particular number of transport blocks or fewer than the particular number of transport blocks to the UE from the Node B, the particular number of transport blocks associated with the UE and based on the plurality of CQI indices.   
     
     
         10 . The non-transitory computer-readable storage medium of  claim 9 , wherein the operations further comprise initiating wireless transmission power information related to a designated number of channelization codes from the Node B to the UE, wherein the power information includes an offset value, and wherein the power information is wirelessly sent to the UE via a Radio Resource Control (RRC) message. 
     
     
         11 . An apparatus comprising:
 a processor configured to initiate wireless transmission of a plurality of channel quality indicator (CQI) indices to a Node B from user equipment (UE), wherein the plurality of CQI indices indicates a particular number of transport blocks; and   a receiver configured to wirelessly receive the particular number of transport blocks or fewer than the particular number of transport blocks at the UE from the Node B.   
     
     
         12 . The apparatus of  claim 11 , wherein the receiver is further configured to wirelessly receive power information related to a designated number of channelization codes at the UE from the Node B, wherein the plurality of CQI indices is based on the power information. 
     
     
         13 . The apparatus of  claim 11 , sizes of the transport blocks are scaled based on a designated number of channelization codes and an available number of channelization codes. 
     
     
         14 . The apparatus of  claim 11 , further comprising a transmitter configured to wirelessly transmit the plurality of CQI indices from the UE to the Node B. 
     
     
         15 . The apparatus of  claim 11 , wherein wirelessly receiving the particular number of transport blocks or fewer than the particular number of transport blocks comprises wirelessly receiving the particular number of transport blocks at the UE from the Node B via a multiple-input multiple-output (MIMO) transmission. 
     
     
         16 . A method for wireless communication, the method comprising:
 wirelessly transmitting a plurality of channel quality indicator (CQI) indices to a Node B from user equipment (UE), wherein the plurality of CQI indices indicates a particular number of transport blocks; and   wirelessly receiving the particular number of transport blocks or fewer than the particular number of transport blocks at the UE from the Node B.   
     
     
         17 . The method of  claim 16 , wherein wirelessly receiving the particular number of transport blocks or fewer than the particular number of transport blocks comprises receiving fewer than the particular number of transport blocks at the UE from the Node B. 
     
     
         18 . The method of  claim 16 , further comprising:
 wirelessly receiving power information at the UE from the Node B, the power information indicating a power offset value that is expressed in decibels; and   determining total received power based on the power offset value and power of a pilot channel.   
     
     
         19 . An apparatus comprising:
 means for wirelessly sending a plurality of channel quality indicator (CQI) indices to a Node B from user equipment (UE), wherein the plurality of CQI indices indicates a particular number of transport blocks; and   means for wirelessly receiving the particular number of transport blocks or fewer than the particular number of transport blocks or fewer at the UE from the Node B.   
     
     
         20 . A non-transitory computer-readable storage medium storing instructions executable by a computer to perform operations comprising:
 initiating wireless transmission of a plurality of channel quality indicator (CQI) indices to a Node B from user equipment (UE), wherein the plurality of CQI indices indicates a particular number of transport blocks; and   receiving the particular number of transport blocks or fewer than the particular number of transport blocks at the UE from the Node B.