Communication system and method for mitigating interference in hierarchical cell structure
AssigneeSamsung Electronics Co., Ltd.
InventorsSang Min LEE, Tak Ki YU, Yung Soo KIM
Life of this patent
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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.
Claims8
A method for receiving a downlink signal by a user equipment in a wireless communication system, the method comprising:
- receiving control information from a first base station;
- identifying a first subframe allocated as a first resource for communication between the first base station and a user equipment in communication with the first base station in the wireless communication system;
- and
- receiving a downlink signal in the first subframe,
- wherein the first subframe is not allocated as a resource associated with data for communication between the second base station and a user equipment in communication with the second base station in the wireless communication system.
A user equipment for receiving a downlink signal in a wireless communication system, the user equipment comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to control to receive control information from a first base station, to identify a first subframe allocated as a first resource for communication between the first base station and a user equipment in communication with the first base station in the wireless communication system, and to receive a downlink signal in the first subframe,
- wherein the first subframe is not allocated as a resource associated with data for communication between the second base station and a user equipment in communication with the second base station in the wireless communication system.
Dependencies are inferred from the claim text.