Method and auxiliary method, apparatus, base station and user equipment for interference cancellation

An apparatus for interference cancellation, comprising:

• a first module, a second module, a third module and an iteration module, wherein:
• the first module is configured for calculating a mean value and a variance value of a received signal to obtain statistics information of the received signal;
• the second module is configured for calculating an estimating log-likelihood ratio of the received signal using the statistics information;
• the third module is configured for calculating a decoding log-likelihood ratio of the received signal using the estimating log-likelihood ratio of the received signal, and updating calculations of the statistics information of the received signal;
• the iteration module is configured for making the first module, the second module and the third module repeat operations for a pre-determined number of times, and outputting data bits obtained from hard decisions.

A base station, comprising:

• a reception module, a configuration module, and a communication module;
• wherein:
• the reception module is configured for processing a received signal through initialization, channel estimation and interference cancellation, and for receiving measurement information and configuration information transmitted by a user equipment (UE);
• the configuration module is configured for configuring a function mode of a base band unit, configuring a transmission parameter of the UE according to the measurement information and the configuration information reported by the UE, configuring a parameter of a filter selected in the base station and a parameter of an iterative interference cancellation process;
• and
• the communication module is configured for communicating with the UE, and communicating with another base station via a standard interface.

A user equipment (UE), comprising:

• a reception module, a configuration module, a report module and a communication module;
• wherein:
• the reception module is configured for receiving configuration information transmitted by a base station which includes, but not limited to, configuration information of a transmission mode and a parameter of a synthesis filter;
• the configuration module is configured for configuring a transmission parameter of the UE which includes, but is not limited to, a parameter of the transmission mode and a parameter of the synthesis filter;
• the report module is configured for reporting channel state information, information of a configurable transmission mode and a configurable parameter of the synthesis filter, a currently-used transmission mode and a currently-used parameter of the synthesis filter;
• and
• the communication module is configured for communicating with the base station.