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US 11,057,138 B2Granted
Interference cancellation method and base station
AssigneeHuawei Technologies Co., Ltd.
InventorsTaofu Mo, Bo Han
Life of this patent
Estimating the term…
Abstract
Embodiments of this application disclose an interference cancellation method and a base station. The method in the embodiments of this application may include obtaining, by a first base station, system information of a neighboring cell. The method may also include determining, by the first base station, interference channel information of a second base station to the first base station based on the system information, where the second base station is a base station in a coverage area of the neighboring cell. Furthermore, the method may also include receiving, by the first base station based on the interference channel information, an uplink signal sent by user equipment in a coverage area of the first base station.
Claims12
An interference cancellation method, comprising:
- obtaining, by a first base station, system information of a neighboring cell comprising:
- obtaining, by the first base station, physical cell identifier (PCI) information of the neighboring cell using a sniffer, and
- obtaining, by the first base station, the system information of the neighboring cell using the PCI information;
- determining, by the first base station, interference channel information of a second base station to the first base station based on the system information, wherein the second base station is a base station in a coverage area of the neighboring cell, and the determining comprises determining, by the first base station, a multiple-input multiple-output system (MIMO) interference channel matrix of the second base station to the first base station based on the system information;
- and
- receiving, by the first base station based on the interference channel information, an uplink signal sent by user equipment in a coverage area of the first base station.
3 more elements
An interference cancellation method, comprising:
- receiving, by a second base station, interference channel information of the second base station to a first base station that is sent by the first base station, wherein the interference channel information is determined by the first base station based on system information, and the system information is system information of a cell in which the second base station is located;
- and
- sending, by the second base station, a downlink signal to user equipment in a coverage area of the second base station based on the interference channel information, further comprising:
- sending, by the second base station based on the interference channel information, the downlink signal to the user equipment in the coverage area of the second base station in a null forming manner, wherein a null forming direction of a transmit beam used by the second base station to send the downlink signal is aligned with the first base station.
1 more element
A first base station, comprising:
- a processor;
- and
- a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
- obtain system information of a neighboring cell by:
- obtaining physical cell identifier (PCI) information of the neighboring cell using a sniffer, and
- obtaining the system information of the neighboring cell using the PCI information;
- determine interference channel information of a second base station to the first base station based on the system information, wherein the second base station is a base station in a coverage area of the neighboring cell, further comprising the programming instructions to instruct the processor to determine a multiple-input multiple-output system (MIMO) interference channel matrix of the second base station to the first base station based on the system information;
- and
- receive, based on the interference channel information, an uplink signal sent by user equipment in a coverage area of the first base station.
6 more elements
A second base station, comprising:
- a processor;
- and
- a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
- receive interference channel information of the second base station to a first base station that is sent by the first station, wherein the interference channel information is determined by the first base station based on system information, and the system information is system information of a cell in which the second base station is located;
- and
- send a downlink signal to user equipment in a coverage area of the second base station based on the interference channel information, further comprising the programming instructions to instruct the processor to send, based on the interference channel information, the downlink signal to the user equipment in the coverage area of the second base station in a null forming manner, wherein a null forming direction of a transmit beam used by the second base station to send the downlink signal is aligned with the first base station.
3 more elements
Dependencies are inferred from the claim text.