Signaling to support advanced wireless receivers and related devices and methods

Abstract

Various devices and methods are provided that use signaling to support advanced wireless receivers. For example, a method includes receiving an input signal at a user equipment. The input signal includes a desired signal and an interfering signal, where the desired signal defines symbols using constellations. The method also includes obtaining information identifying a wireless channel used by the interfering signal and a modulation type used to modulate data in the interfering signal. The method further includes recovering the symbols from the desired signal using the information.

1 .- 20 . (canceled) 
     
     
         21 . A method comprising:
 receiving an input signal at a user equipment, the input signal comprising a desired signal and an interfering signal;   obtaining signaling information identifying a wireless channel used by the interfering signal and a type of symbols in the wireless channel; and   reducing interference from the input signal using a successive interference cancellation technique and the identified type of symbols.   
     
     
         22 . The method of  claim 21 , wherein obtaining the signaling information comprises:
 receiving a first portion of the signaling information from a base station; and   identifying a second portion of the signaling information using blind detection.   
     
     
         23 . The method of  claim 22 , wherein identifying the second portion of the signaling information using blind detection comprises blindly estimating a modulation type. 
     
     
         24 . The method of  claim 22 , wherein identifying the second portion of the signaling information using blind detection comprises blindly estimating a power level of a control channel by averaging a power level over a plurality of resource elements. 
     
     
         25 . The method of  claim 21 , wherein reducing interference from the input signal comprises:
 calculating a receiver to decode the interfering signal;   calculating an estimated symbol using the receiver; and   subtracting a scaled version of the estimated symbol from the input signal.   
     
     
         26 . The method of  claim 25 , wherein the scaled version of the estimated symbol is identified using a scaling factor retrieved from a lookup table, the lookup table accessed using a Signal to Interference plus Noise Ratio of the interfering signal. 
     
     
         27 . The method of  claim 21 , wherein the signaling information comprises sequences and locations of pilot patterns. 
     
     
         28 . The method of  claim 21 , wherein obtaining the signaling information comprises obtaining the signaling information explicitly over one of: the wireless channel used by the interfering signal, a second wireless channel associated with the desired signal, and a third wireless channel. 
     
     
         29 . The method of  claim 21 , wherein obtaining the signaling information comprises using a predefined Precoding Matrix Indicator (PMI) or a predefined demodulation reference signal (DMRS) sequence. 
     
     
         30 . The method of  claim 21 , wherein obtaining the signaling information comprises obtaining the signaling information over a control channel, a power level on the control channel set to a known value or to a value within a known range. 
     
     
         31 . An apparatus comprising:
 at least one receiver configured to receive an input signal, the input signal comprising a desired signal and an interfering signal; and   at least one processing unit configured to:
 obtain signaling information identifying a wireless channel used by the interfering signal and a type of symbols in the wireless channel; and 
 reduce interference from the input signal using a successive interference cancellation technique and the identified type of symbols. 
   
     
     
         32 . The apparatus of  claim 31 , wherein the at least one processing unit is configured to obtain the signaling information by:
 receiving a first portion of the signaling information from a base station; and   identifying a second portion of the signaling information using blind detection.   
     
     
         33 . The apparatus of  claim 32 , wherein the at least one processing unit is configured to identify the second portion of the signaling information using blind detection by blindly estimating a modulation type. 
     
     
         34 . The apparatus of  claim 32 , wherein the at least one processing unit is configured to identify the second portion of the signaling information using blind detection by blindly estimating a power level of a control channel by averaging a power level over a plurality of resource elements. 
     
     
         35 . The apparatus of  claim 31 , wherein the at least one processing unit is configured to reduce interference from the input signal by:
 calculating a receiver to decode the interfering signal;   calculating an estimated symbol using the receiver; and   subtracting a scaled version of the estimated symbol from the input signal.   
     
     
         36 . The apparatus of  claim 35 , wherein the scaled version of the estimated symbol is identified using a scaling factor retrieved from a lookup table, the lookup table accessed using a Signal to Interference plus Noise Ratio of the interfering signal. 
     
     
         37 . The apparatus of  claim 31 , wherein the signaling information comprises sequences and locations of pilot patterns. 
     
     
         38 . The apparatus of  claim 31 , wherein the at least one processing unit is configured to obtain the signaling information explicitly over one of: the wireless channel used by the interfering signal, a second wireless channel associated with the desired signal, and a third wireless channel. 
     
     
         39 . The apparatus of  claim 31 , wherein the at least one processing unit is configured to obtain the signaling information by using a predefined Precoding Matrix Indicator (PMI) or a predefined demodulation reference signal (DMRS) sequence. 
     
     
         40 . The apparatus of  claim 31 , wherein the at least one processing unit is configured to obtain the signaling information over a control channel, a power level on the control channel set to a known value or to a value within a known range.