METHOD FOR CANCELING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR
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Abstract
According to an embodiment of the present invention, disclosed is a method for supporting, by a serving base station, cancellation of interference signals from signals received at a target terminal in a wireless communication system. The method comprises the steps of: receiving scheduling information of at least one neighboring base station from the at least one neighboring base station; configuring a set of auxiliary information for canceling the interference signals of a target terminal on the basis of the scheduling information of the at least one neighboring base station; and transmitting the set of auxiliary information for canceling the interference signals of the target terminal to the target terminal, wherein the auxiliary information comprises at least one of demodulation reference signal (DM-RS) related information and cell-specific reference signal (CRS) related information in association with interference signals from respective neighboring base stations.
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Citations
31 Claims
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1-16. -16. (canceled)
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17. A method for supporting, by a serving cell, cancellation of an interfering signal in a received signal of a target terminal in a wireless communication system, the method comprising:
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receiving, from a neighboring cell, scheduling information of the neighboring base station; configuring a set of assistance information for cancellation of an interfering signal of the target terminal based on the scheduling information of the at least one neighboring base station; and transmitting, to the target terminal, the set of assistance information for cancellation of the interfering signal of the target terminal, wherein the set of assistance information comprises information about at least one of a cell identifier of the neighboring cell, the number of antenna ports to be used for transmission of cell-specific reference signal (CRS), MBSFN (multimedia broadcast single subframe network) subframe pattern, a ratio of a transmission power of physical downlink shared channel (PDSCH) to a transmission power of the CRS or transmission mode related to the interfering signal. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method for canceling, by a terminal, an interfering signal in a received signal in a wireless communication system, the method comprising:
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receiving, from a serving cell, a set of assistance information for cancellation of an interfering signal from a neighboring cell; and estimating the interfering signal based on the at least one indicated assistance information and canceling the interfering signal in the received signal based on the set of assistance information, wherein the set of assistance information comprises information about at least one of a cell identifier of the neighboring cell, the number of antenna ports to be used for transmission of cell-specific reference signal (CRS), MBSFN (multimedia broadcast single subframe network) subframe pattern, a ratio of a transmission power of physical downlink shared channel (PDSCH) to a transmission power of the CRS or transmission mode related to the interfering signal. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A terminal configured to cancel an interfering signal in a received signal in a wireless communication system, the terminal comprising:
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a radio frequency (RF) unit; and a processor configured to control the RF unit, wherein the processor is configured to; receive, from a serving cell, a set of assistance information for cancellation of an interfering signal from a neighboring cell and cancel the interfering signal in the received signal based on the set of assistance information, wherein the set of assistance information comprises information about at least one of a cell identifier of the neighboring cell, the number of antenna ports to be used for transmission of cell-specific reference signal (CRS), MBSFN (multimedia broadcast single subframe network) subframe pattern, a ratio of a transmission power of physical downlink shared channel (PDSCH) to a transmission power of the CRS or transmission mode related to the interfering signal.
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Specification