Methods and apparatus for a data transmission scheme for narrow-band internet of things (nb-iot)

Abstract

Certain aspects of the present disclosure relate to methods and apparatus for implementing a data transmission scheme for Narrow-Band Internet of Things (NB-IoT). A User Equipment (UE) combines pairs of antenna ports to generate at least first and second combined antennas ports. The UE receives reference signals transmitted in a narrow band region of a larger system bandwidth, and for each combined port, adds the references signals received on resource elements (REs) of each of the combined pair of antenna ports. The UE determines channel estimates for each combined antenna port based on the added reference signals for the combined port.

What is claimed is: 
     
         1 . A method of wireless communication comprising:
 configuring two or more Resource Blocks (RBs) for transmission in a cell;   configuring a same scrambling sequence for the two or more RBs for the transmission in the cell; and   scrambling data to be transmitted in each of the RBs with the scrambling sequence.   
     
     
         2 . The method of  claim 1 , further comprising configuring a different Physical Cell Identifier in each of the two or more RBs. 
     
     
         3 . An apparatus of wireless communication, comprising:
 at least one processor configured to:   configure two or more Resource Blocks (RBs) for transmission in a cell;   configure a same scrambling sequence for the two or more RBs for the transmission in the cell; and   scramble data to be transmitted in each of the RBs with the scrambling sequence; and   memory coupled to the at least one processor.   
     
     
         4 . The apparatus of  claim 3 , wherein the at least one processor is further configured to configure a different Physical Cell Identifier in each of the two or more RBs. 
     
     
         5 . An apparatus of wireless communication, comprising:
 means for configuring two or more Resource Blocks (RBs) for transmission in a cell;   means for configuring a same scrambling sequence for the two or more RBs for the transmission in the cell; and   means for scrambling data to be transmitted in each of the RBs with the scrambling sequence.   
     
     
         6 . The apparatus of  claim 5 , further comprising means for configuring a different Physical Cell Identifier in each of the two or more RBs. 
     
     
         7 . A computer-readable medium storing instructions which when executed by a processor performs a method comprising:
 configuring two or more Resource Blocks (RBs) for transmission in a cell;   configuring a same scrambling sequence for the two or more RBs for the transmission in the cell; and   scrambling data to be transmitted in each of the RBs with the scrambling sequence.   
     
     
         8 . The computer-readable medium of  claim 7 , further comprising instructions for configuring a different Physical Cell Identifier in each of the two or more RBs.