Interference cancellation method and device

A network-side device, comprising a transmitter and a memory that is to store various types of application program code required when the network-side device performs a corresponding operation, wherein

• the transmitter is to:
• deliver an interference cancellation parameter to a user terminal, so that the user terminal applies the interference cancellation parameter received from the network-side device, to perform an interference cancellation operation;
• and
• deliver a specified first interference cancellation parameter application rule or first instruction information to the user terminal, so that in a process of performing cell reestablishment or cell handover, for any received interference cancellation parameter, the user terminal continues to apply the interference cancellation parameter to perform an interference cancellation operation according to the first interference cancellation parameter application rule or the first instruction information delivered by the network-side device, or releases or no longer applies the interference cancellation parameter,
• wherein the interference cancellation parameter delivered by the transmitter to the user terminal comprises at least one or more of the following parameters:
• a cell identity of a neighboring cell of a serving cell in which the user terminal is located, pilot information of a neighboring cell of a serving cell in which the user terminal is located, a modulation mode of a neighboring cell of a serving cell in which the user terminal is located, a coding mode of a neighboring cell of a serving cell in which the user terminal is located, a transmission mode of a neighboring cell of a serving cell in which the user terminal is located, a precoding matrix of a neighboring cell of a serving cell in which the user terminal is located, a coding rate of a neighboring cell of a serving cell in which the user terminal is located, a power parameter of a neighboring cell of a serving cell in which the user terminal is located, multicast/broadcast single frequency network (MBSFN) configuration information of a neighboring cell of a serving cell in which the user terminal is located, information about a virtual cell identity (virtual cell ID) and a scrambling identifier indication bit nSCID of a neighboring cell of a serving cell in which the user terminal is located, a time division duplex (TDD) configuration parameter used by a neighboring cell of a serving cell in which the user terminal is located, first decision information of a neighboring cell of a serving cell in which the user terminal is located, second decision information of a neighboring cell of a serving cell in which the user terminal is located, third decision information of a neighboring cell of a serving cell in which the user terminal is located, or start symbol information of a physical downlink shared channel (PDSCH) of a neighboring cell of a serving cell in which the user terminal is located, wherein for any neighboring cell, first decision information of the neighboring cell is used to indicate whether a TDD configuration used by the neighboring cell is consistent with a TDD configuration used by the serving cell, second decision information of the neighboring cell is used to indicate whether dynamic change information of the TDD configuration used by the neighboring cell is consistent with dynamic change information of the TDD configuration used by the serving cell, and third decision information of the neighboring cell is used to indicate whether the TDD configuration and an MBSFN configuration used by the neighboring cell are consistent with the TDD configuration and an MBSFN configuration used by the serving cell.

An interference cancellation method, comprising:

• receiving, by a user terminal, an interference cancellation parameter delivered by a network-side device, and applying the received interference cancellation parameter to perform an interference cancellation operation;
• and
• in a process of performing cell reestablishment or cell handover, for any received interference cancellation parameter, continuing to apply the interference cancellation parameter to perform an interference cancellation operation according to a specified first interference cancellation parameter application rule or first instruction information delivered by the network-side device, or releasing or no longer applying the interference cancellation parameter,
• wherein the received interference cancellation parameter comprises at least one or more of the following parameters:
• a cell identity of a neighboring cell of a serving cell in which the user terminal is located, pilot information of a neighboring cell of a serving cell in which the user terminal is located, a modulation mode of a neighboring cell of a serving cell in which the user terminal is located, a coding mode of a neighboring cell of a serving cell in which the user terminal is located, a transmission mode of a neighboring cell of a serving cell in which the user terminal is located, a precoding matrix of a neighboring cell of a serving cell in which the user terminal is located, a coding rate of a neighboring cell of a serving cell in which the user terminal is located, a power parameter of a neighboring cell of a serving cell in which the user terminal is located, multicast/broadcast single frequency network (MBSFN) configuration information of a neighboring cell of a serving cell in which the user terminal is located, information about a virtual cell identity (virtual cell ID) and a scrambling identifier indication bit nSCID of a neighboring cell of a serving cell in which the user terminal is located, a time division duplex (TDD) configuration parameter used by a neighboring cell of a serving cell in which the user terminal is located, first decision information of a neighboring cell of a serving cell in which the user terminal is located, second decision information of a neighboring cell of a serving cell in which the user terminal is located, third decision information of a neighboring cell of a serving cell in which the user terminal is located, or start symbol information of a physical downlink shared channel (PDSCH) of a neighboring cell of a serving cell in which the user terminal is located, wherein for any neighboring cell, first decision information of the neighboring cell is used to indicate whether a TDD configuration used by the neighboring cell is consistent with a TDD configuration used by the serving cell, second decision information of the neighboring cell is used to indicate whether dynamic change information of the TDD configuration used by the neighboring cell is consistent with dynamic change information of the TDD configuration used by the serving cell, and third decision information of the neighboring cell is used to indicate whether the TDD configuration and an MBSFN configuration used by the neighboring cell are consistent with the TDD configuration and an MBSFN configuration used by the serving cell.

An interference cancellation method, comprising:

• delivering, by a network-side device, an interference cancellation parameter to a user terminal, so that the user terminal applies the interference cancellation parameter received from the network-side device, to perform an interference cancellation operation;
• and
• delivering a specified first interference cancellation parameter application rule or first instruction information to the user terminal, so that in a process of performing cell reestablishment or cell handover, for any received interference cancellation parameter, the user terminal continues to apply the interference cancellation parameter to perform an interference cancellation operation according to the first interference cancellation parameter application rule or the first instruction information delivered by the network-side device, or releases or no longer applies the interference cancellation parameter,
• wherein the interference cancellation parameter delivered by the network-side device to the user terminal comprises at least one or more of the following parameters:
• a cell identity of a neighboring cell of a serving cell in which the user terminal is located, pilot information of a neighboring cell of a serving cell in which the user terminal is located, a modulation mode of a neighboring cell of a serving cell in which the user terminal is located, a coding mode of a neighboring cell of a serving cell in which the user terminal is located, a transmission mode of a neighboring cell of a serving cell in which the user terminal is located, a precoding matrix of a neighboring cell of a serving cell in which the user terminal is located, a coding rate of a neighboring cell of a serving cell in which the user terminal is located, a power parameter of a neighboring cell of a serving cell in which the user terminal is located, multicast/broadcast single frequency network (MBSFN) configuration information of a neighboring cell of a serving cell in which the user terminal is located, information about a virtual cell identity (virtual cell ID) and a scrambling identifier indication bit nSCID of a neighboring cell of a serving cell in which the user terminal is located, a time division duplex (TDD) configuration parameter used by a neighboring cell of a serving cell in which the user terminal is located, first decision information of a neighboring cell of a serving cell in which the user terminal is located, second decision information of a neighboring cell of a serving cell in which the user terminal is located, third decision information of a neighboring cell of a serving cell in which the user terminal is located, or start symbol information of a physical downlink shared channel (PDSCH) of a neighboring cell of a serving cell in which the user terminal is located, wherein for any neighboring cell, first decision information of the neighboring cell is used to indicate whether a TDD configuration used by the neighboring cell is consistent with a TDD configuration used by the serving cell, second decision information of the neighboring cell is used to indicate whether dynamic change information of the TDD configuration used by the neighboring cell is consistent with dynamic change information of the TDD configuration used by the serving cell, and third decision information of the neighboring cell is used to indicate whether the TDD configuration and an MBSFN configuration used by the neighboring cell are consistent with the TDD configuration and an MBSFN configuration used by the serving cell.