APPARATUS AND METHOD FOR CANCELLING INTER-CELL INTERFERENCE IN COMMUNICATION SYSTEM

摘要

The present disclosure relates to an apparatus and method for canceling and/or suppressing inter-cell interference in a wireless communication. The method includes: establishing a Radio Resource Control (RRC) connection with a base station through a first serving cell; receiving, at a User Equipment (UE), an RRC message through the first serving cell, the RRC message comprising cell-specific reference signal (CRS) information of a neighbor cell and Physical Downlink Shared Channel (PDSCH) information of the neighbor cell, and the PDSCH information of the neighbor cell comprising a parameter relating to a power ratio of a CRS of the neighbor cell and a PDSCH of the neighbor cell; receiving the PDSCH through the first serving cell; performing a channel estimation for retrieving data from a PDSCH of the first serving cell; and retrieving the data from the PDSCH of the first serving cell based on the second channel estimation.

主权项

1. A User Equipment (UE) to perform a wireless communication in an inter-cell interference environment, the UE comprising:
a processor to establish a Radio Resource Control (RRC) connection with a base station through a first serving cell, and to perform a channel estimation for retrieving data from a Physical Downlink Shared Channel (PDSCH) of the first serving cell; and a receiver to receive an RRC message through the first serving cell, the RRC message comprising cell-specific reference signal (CRS) information of a neighbor cell and PDSCH information of the neighbor cell, and the PDSCH information of the neighbor cell comprising a parameter relating to a power ratio of a CRS of the neighbor cell and a PDSCH of the neighbor cell, and to receive the PDSCH through the first serving cell, wherein the channel estimation comprises:
performing a first channel estimation for the PDSCH of the first serving cell based on a CRS of the first serving cell,based on interference information of the CRS of the neighbor cell, canceling an interference of the CRS of the neighbor cell from the first channel estimation, andbased on the parameter relating to the power ratio of the CRS of the neighbor cell and the PDSCH of the neighbor cell, performing a second channel estimation for the PDSCH of the first serving cell by canceling an interference of the PDSCH of the neighbor cell; and wherein the processor retrieves the data from the PDSCH of the first serving cell based on the second channel estimation.