Signaling of mixture combination sets

Abstract

A method implemented in a user terminal used in a wireless communications system is disclosed. The method comprises receiving an index, referencing a table of indices in which the received index denotes at least a total number of co-scheduled streams and one or more modulation schemes, determining at least one modulation scheme of at least one co-scheduled user based on the referencing, and receiving data signals and processing the data signals by utilizing the at least one modulation scheme, wherein each index of a plurality of the indices in the table denotes a total number of co-scheduled streams and denotes one or more stream indices for a user terminal to which the index is directed. Other methods, systems, and apparatuses also are disclosed.

What is claimed is: 
     
         1 . A method implemented in a user terminal used in a wireless communications system, the method comprising:
 receiving an index;   referencing a table of indices in which the received index denotes at least a total number of co-scheduled streams and one or more modulation schemes;   determining at least one modulation scheme of at least one co-scheduled user based on the referencing; and   receiving a data signal and processing the data signal by utilizing the at least one modulation scheme,   wherein each of plural indices in the table denotes a total number of co-scheduled streams and denotes one or more stream indices for a user terminal to which the index is directed.   
     
     
         2 . A method implemented in a base station used in a wireless communications system, the method comprising:
 transmitting an index to a user terminal; and   transmitting a data signal to the user terminal,   wherein the user terminal references a table of indices in which the received index denotes at least a total number of co-scheduled streams and one or more modulation schemes, determines at least one modulation scheme of at least one co-scheduled user based on the referencing, and processes the data signal by utilizing the at least one modulation scheme, and   wherein each of plural indices in the table denotes a total number of co-scheduled streams and denotes one or more stream indices for a user terminal to which the index is directed.   
     
     
         3 . A wireless communications system comprising:
 a base station to transmit an index; and   a user terminal to receive the index from the base station, and to reference a table of indices in which the received index denotes at least a total number of co-scheduled streams and one or more modulation schemes, and to determine at least one modulation scheme of at least one co-scheduled user based on the referencing,   wherein the user terminal receives a data signal from the base station and processes the data signal by utilizing the at least one modulation scheme, and   wherein each of plural indices in the table denotes a total number of co-scheduled streams and denotes one or more stream indices for a user terminal to which the index is directed.