Methods and apparatus for adjacent channel interference mitigation in access point base stations

Abstract

Apparatus and methods for interference mitigation in wireless communication networks are described. In one implementation, at a node in a first network, a power level and/or bandwidth or channelization of an adjacent channel signal may be determined, and a power level and/or bandwidth of a transmitted signal in the first network may be adjusted in response.

We claim: 
     
         1 . A method, comprising:
 receiving, from a macrocell node, a first plurality of subcarrier signals;   receiving, from the macrocell node, a second plurality of subcarrier signals wherein the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and   weighting a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently relative to a second plurality of modulation symbols carried by the second plurality of subcarrier signals.   
     
     
         2 . A femto node, comprising:
 a signal power determiner configured to receive, from a macrocell node, a first plurality of subcarrier signals;   receive, from the macrocell node, a second plurality of subcarrier signals wherein the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and   weigh a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently relative to a second plurality of modulation symbols carried by the second plurality of subcarrier signals.   
     
     
         3 . A femto node, comprising:
 means to receive, from a macrocell node, a first plurality of subcarrier signals;   means to receive, from the macrocell node, a second plurality of subcarrier signals wherein the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and   means to weigh a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently relative to a second plurality of modulation symbols carried by the second plurality of subcarrier signals.   
     
     
         4 . A computer program product comprising a computer-readable medium comprising codes for causing a computer to:
 receive, from a macrocell node, a first plurality of subcarrier signals;   receive, from the macrocell node, a second plurality of subcarrier signals wherein the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and   weigh a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently relative to a second plurality of modulation symbols carried by the second plurality of subcarrier signals.   
     
     
         5 . An apparatus for use in a communications device, comprising:
 a memory; and   a processor coupled to the memory, the processor configured to execute instructions stored in the memory to:   receive, from a macrocell node, a first plurality of subcarrier signals;   receive, from the macrocell node, a second plurality of subcarrier signals wherein the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and   weigh a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently relative to a second plurality of modulation symbols carried by the second plurality of subcarrier signals.