Communication system and method for mitigating interference in hierarchical cell structure
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United States of America Patent
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Sep 14, 2021
Grant Date -
Nov 19, 2020
app pub date -
Jul 27, 2020
filing date -
Apr 1, 2009
priority date (Note) -
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Abstract
A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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