Data interference cancellation method, transmit end, receive end, and system

A transmit end, comprising:

• a processor;
• and
• a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:
• allocate downlink transmission resources corresponding to each transmission group of a plurality of transmission groups, wherein
• at least one transmission group of the plurality of transmission groups comprises at least two transmit antennas
• a total quantity of transmission groups in the plurality of transmission groups is less than a total quantity of transmit antennas in the plurality of transmission groups,
• a first transmission resource of a first self-interference channel estimation timeslot of the downlink transmission resources comprises a first plurality of resource blocks,
• a total quantity of the first plurality of resource blocks is Q×Q, and
• Q is less than or equal to the total quantity of transmission groups;
• separately send downlink data on the downlink transmission resources corresponding to each transmission group of the plurality of transmission groups;
• wherein allocating the downlink transmission resources corresponding to each transmission group of the plurality of transmission groups comprises
• dividing, by the transmit end, the first transmission resource of the first self-interference channel estimation timeslot into the first plurality of resource blocks, and
• allocating, by the transmit end, a resource block of the first plurality of resource blocks corresponding to each transmission group;
• and
• wherein allocating the resource block of the first plurality of resource blocks corresponding to each transmission group of the plurality of transmission groups comprises
• allocating, by the transmit end, one unique resource block to each transmission group, and
• allocating each resource block remaining after allocating the one unique resource block to each transmission group, to at least two transmission groups.

A method, comprising:

• receiving, by a receive end, downlink data sent by a transmit end on downlink transmission resources corresponding to each transmission group of a plurality of transmission groups, wherein
• at least one transmission group of the plurality of transmission groups comprises at least two transmit antennas,
• a total quantity of transmission groups in the plurality of transmission groups is less than a total quantity of transmit antennas in the plurality of transmission groups,
• a first transmission resource of a first self-interference channel estimation timeslot of the downlink transmission resources comprises a first plurality of resource blocks,
• a total quantity of the first plurality of resource blocks is Q×Q,
• Q is less than or equal to the total quantity of transmission groups,
• isolation between antenna arrays of a plurality of antenna arrays is greater than a preset isolation, and
• the transmit antennas are located on the antenna arrays;
• performing, by the receive end, interference cancellation on the downlink data in each antenna array, to obtain baseband data of each antenna array;
• estimating, by the receive end, a self-interference channel between the transmit end and the receive end, according to the downlink data on the downlink transmission resources corresponding to each transmission group;
• performing, by the receive end, digital interference cancellation on baseband data of all of the antenna arrays according to the self-interference channel between the transmit end and the receive end, to obtain interference cancellation data;
• allocating, by the transmit end, downlink transmission resources corresponding to each transmission group of the plurality of transmission groups, wherein the allocating comprises
• dividing, by the transmit end, the first transmission resource of the first self-interference channel estimation timeslot into the first plurality of resource blocks, and
• allocating, by the transmit end, a resource block of the first plurality of resource blocks corresponding to each transmission group;
• and
• wherein allocating the resource block of the first plurality of resource blocks corresponding to each transmission group of the plurality of transmission groups comprises
• allocating, by the transmit end, one unique resource block to each transmission group, and
• allocating each resource block remaining after allocating the one unique resource block to each transmission group, to at least two transmission groups.

A receive end, comprising:

• a processor;
• and
• a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:
• receive downlink data sent by a transmit end on downlink transmission resources corresponding to each transmission group of a plurality of transmission groups, wherein
• at least one transmission group of the plurality of transmission groups comprises at least two transmit antennas,
• a total quantity of transmission groups in the plurality of transmission groups is less than a total quantity of transmit antennas in the plurality of transmission groups,
• a first transmission resource of a first self-interference channel estimation timeslot of the downlink transmission resources comprises a first plurality of resource blocks,
• a total quantity of the first plurality of resource blocks is Q×Q,
• Q is less than or equal to the total quantity of transmission groups, and
• isolation between antenna arrays of a plurality of antenna arrays in which the transmit antennas are located is greater than a preset isolation;
• perform interference cancellation on the downlink data in each antenna array of the plurality of antenna arrays, to obtain baseband data of each antenna array;
• estimate a self-interference channel between the transmit end and the receive end according to the downlink data on the downlink transmission resources corresponding to each transmission group;
• perform digital interference cancellation on the baseband data of all antenna arrays of the plurality of antenna arrays according to the self-interference channel between the transmit end and the receive end, to obtain interference cancellation data;
• allocate, by the transmit end, downlink transmission resources corresponding to each transmission group of the plurality of transmission groups, wherein the allocating comprises
• dividing, by the transmit end, the first transmission resource of the first self-interference channel estimation timeslot into the first plurality of resource blocks, and
• allocating, by the transmit end, a resource block of the first plurality of resource blocks corresponding to each transmission group;
• and
• wherein allocating the resource block of the first plurality of resource blocks corresponding to each transmission group of the plurality of transmission groups comprises
• allocating, by the transmit end, one unique resource block to each transmission group, and
• allocating each resource block remaining after allocating the one unique resource block to each transmission group, to at least two transmission groups.