Interference elimination method, related device and readable storage medium

Abstract

The present invention provides an interference cancellation method, related equipment, and readable storage medium. The interference cancellation method may include: receiving precoded data in a downlink from an interfering station; generating an interference cancellation signal based on the precoded data and the channel environment between the interfered station and the interferer station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the interfered station; and using the interference cancellation signal to cancel the interference signal. This application can reduce the impact of the interference signal of the interfering station on the interfered station by generating an interference cancellation signal at the interfered station without affecting the performance of the base station.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies, and in particular to an interference elimination method, related equipment, and a readable storage medium. Background Art

[0002] With the development of mobile communication technology, mobile communication systems have both large downlink demands from public networks and large uplink application demands from vertical industries. Therefore, different time slot ratio requirements arise in the same frequency band. Different base stations may perform uplink and downlink signal processing simultaneously in certain time slots. The base stations (interfering stations) that perform downlink transmission in these cross-time slots will interfere with the base stations (interfered stations) that perform uplink reception.

[0003] Currently, inter-base station interference is typically mitigated by reducing the downlink transmit power of interfering stations in intersecting time slots, or by staggering the frequency domains of user resources between intersecting stations and affected stations. However, these inter-base station interference mitigation methods can affect base station coverage or capacity, resulting in lower base station performance. Summary of the Invention

[0004] The embodiments of the present application provide an interference elimination method, related equipment, and readable storage medium to solve the interference problem between base stations without reducing the performance of the base stations.

[0005] To solve the above problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an interference cancellation method, which is applied to an interfered station. The method includes:

[0007] receiving precoded data in a downlink from an interfering station;

[0008] generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station;

[0009] The interference signal is cancelled using the interference cancellation signal.

[0010] In a second aspect, an embodiment of the present application provides an interference cancellation method, which is applied to an interfering station, and the method includes:

[0011] The precoded data in the downlink of the interfering station is sent to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station.

[0012] In a third aspect, an embodiment of the present application further provides an interference cancellation device, applied to an interfered station, comprising:

[0013] A first transceiver, configured to receive precoded data in a downlink from an interfering station;

[0014] Processor for:

[0015] generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station;

[0016] The interference signal is cancelled using the interference cancellation signal.

[0017] In a fourth aspect, an embodiment of the present application further provides an interference elimination device, which is applied to an interfering station, including:

[0018] The second transceiver is configured to send precoded data in a downlink of the interfering station to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station.

[0019] In a fifth aspect, an embodiment of the present application further provides an interference cancellation system, including an interfering station and an interfered station, wherein:

[0020] The interfering station is configured to: send precoded data in a downlink of the interfering station to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station;

[0021] The disturbed station is configured to:

[0022] receiving precoded data in a downlink from an interfering station;

[0023] generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station;

[0024] The interference signal is cancelled using the interference cancellation signal.

[0025] In the sixth aspect, an embodiment of the present application also provides a base station, comprising: a transceiver, a memory, a processor, and a program stored in the memory and runnable on the processor; the processor is used to read the program in the memory to implement the steps in the method described in the first aspect above; or, the steps in the method described in the second aspect above.

[0026] In the seventh aspect, an embodiment of the present application further provides a readable storage medium for storing a program, which, when executed by a processor, implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect.

[0027] In an embodiment of the present application, the interfering station can transmit precoded data in the downlink to the interfered station. In this way, the interfered station can generate an interference cancellation signal corresponding to the interference signal of the interfering station based on the precoded data and the channel environment between the interfering station and the interfered station, thereby reducing the impact of the interference signal of the interfering station on the interfered station by using the interference cancellation signal. It can be seen that the embodiment of the present application can reduce the impact of the interference signal of the interfering station on the interfered station by generating the interference cancellation signal at the interfered station without affecting the performance of the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic diagram of the downlink process provided by an embodiment of the present application;

[0030] Figure 2 This is a transmission diagram provided by an embodiment of the present application;

[0031] Figure 3 This is one of the flow charts of the interference elimination method provided in the embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the structure of the target data packet provided in an embodiment of the present application;

[0033] Figure 5 This is the second flow chart of the interference elimination method provided in the embodiment of the present application;

[0034] Figure 6a Schematic diagram of the interaction between the jamming station and the jamming station provided in the embodiment of the present application;

[0035] Figure 6b This is a schematic diagram of interference elimination provided by an embodiment of the present application;

[0036] Figure 7 This is one of the structural diagrams of the interference elimination device provided by the present application;

[0037] Figure 8 This is the second structural diagram of the interference elimination device provided by the present application;

[0038] Figure 9 It is a structural diagram of the base station provided by the implementation of this application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] The terms "first", "second" etc. in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. In addition, the terms "comprise" and "have" and any deformation thereof are intended to cover non-exclusive inclusions, such as, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are intrinsic to these processes, methods, products or equipment. In addition, "and / or" is used in the present application to represent at least one of connected objects, such as A and / or B and / or C, and represents comprising independent A, independent B, independent C, and A and B all exist, B and C all exist, A and C all exist, and 7 situations that A, B and C all exist.

[0041] For ease of understanding, some contents involved in the embodiments of this application are described below.

[0042] The downlink process can be found in Figure 1 .like Figure 1 As shown in the figure, the encoded codewords are processed by the following devices in sequence and finally form orthogonal frequency division multiplexing (OFDM) and are transmitted from the antenna ports:

[0043] Scrambling → Modulation mapper → Layer mapper → Precoding & Antenna Port mapper → Resource Element mapper → OFDM signal generation

[0044] The following describes the interference elimination method provided in the embodiments of the present application.

[0045] When cross-slot interference occurs, the signal received by the interfered base station is the useful signal of its connected terminal superimposed with the downlink transmission signal of the interfering station. Figure 2 As shown, the victim station receives a signal Y=H_ul*S_ul+H_dl*S_dl, where S_dl represents the signal sent by the interfering station to the victim station, H_dl represents the channel environment between the victim station and the interfering station, S_ul represents the signal sent by the user to the victim station, and H_ul represents the channel environment between the user and the victim station.

[0046] The embodiments of the present application aim to reconstruct or recover the interference signal of the interfering station at the interfered station, and use the reconstructed or recovered interference signal to offset the interference signal actually received from the interfering station, thereby reducing or eliminating the impact of the interference signal received from the interfering station on the interfered station. To enable the interfered station to reconstruct or recover the interference signal of the interfering station, the interfering station can send downlink data in its own downlink to the interfered station through inter-station transmission.

[0047] In the embodiment of the present application, the interference signal of the interfering station obtained by reconstruction or recovery may be referred to as an interference cancellation signal.

[0048] See also Figure 3 , Figure 3 This is one of the flow charts of the interference elimination method provided in the embodiment of the present application. Figure 3 The interference cancellation method shown can be applied to the interfered station. Figure 3 As shown, the interference elimination method may include the following steps:

[0049] Step 301: Receive precoded data in a downlink from an interfering station.

[0050] In the embodiment of the present application, the downlink data sent by the interfering station may be precoded data in the downlink. That is, the interfering station may determine the transmission position of the inter-station transmission as the position of the frequency domain data precoded by the interfering station. In this case, the data received by the victim station is the data mapped to the transmitting port by the interfering station. Therefore, the victim station does not need to perform additional processing on the received data and can directly use the received data to generate an interference cancellation signal, thereby reducing the data processing complexity of the victim station.

[0051] In addition, compared to the transmission of forward data from the interfering station to the interfered station, that is, the downlink OFDM symbol data of the interfering station, in this case, the interfered station needs to perform fast Fourier transform (FFT) processing on the received downlink OFDM symbol to convert it back to the frequency domain, and then perform calculations with the inter-station channel estimation to restore the interference signal of the interfering station received at the air interface. The additional FFT processing of the interfered station has a large resource overhead, increases the processing complexity of the interfered station, and the bandwidth required to transmit full-bandwidth OFDM symbol data is also large. The interfered station in the embodiment of the present application does not need to perform FFT processing, which can reduce the data processing complexity of the interfered station and reduce the transmission bandwidth.

[0052] In the embodiment of the present application, the interfering station and the victim station can implement the transmission of the precoded data through the backplane or Xn interface. That is, the interfering station can send the precoded data through the backplane or Xn interface, and correspondingly, the victim station can receive the precoded data through the backplane or Xn interface.

[0053] Step 302: Generate an interference cancellation signal according to the precoded data and the channel environment between the victim station and the interfering station, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station.

[0054] In this embodiment of the present application, the victim station can recover or reconstruct the interference signal of the interfering station based on the precoded data and the channel environment to obtain an interference cancellation signal. The interference cancellation signal corresponds to the interference signal of the interfering station actually received by the victim station. Therefore, it can be understood that the generation of the interference cancellation signal can be achieved by simulating the process of data sent by the downlink port of the interfering station reaching the victim station through the channel environment. Optionally, the victim station can multiply the first precoded data by the channel environment to obtain the interference cancellation signal, but is not limited to this.

[0055] The channel environment may be obtained by the victim station performing channel estimation based on orthogonal pilots of the victim station and the interfering station.

[0056] Step 303: Use the interference cancellation signal to eliminate the interference signal.

[0057] In specific implementation, the interfered station may subtract the interference cancellation signal from the received signal to obtain a target signal, where the target signal does not include the interference signal of the interfering station, thereby eliminating interference of the interference signal of the interfering station on the interfered station.

[0058] It should be noted that the embodiments of the present application can be applicable to any inter-station interference scenario, especially the cross-time slot interference scenario between small stations.

[0059] In the interference cancellation method of this embodiment, the interfered station can obtain the precoded data in the downlink of the interfering station. In this way, the interfered station can generate an interference cancellation signal corresponding to the interference signal of the interfering station based on the precoded data and the channel environment between the interfering station and the interfered station, so that the interference cancellation signal can be used to reduce the impact of the interference signal of the interfering station on the interfered station. It can be seen that the embodiment of the present application can reduce the impact of the interference signal of the interfering station on the interfered station by generating the interference cancellation signal at the interfered station without affecting the performance of the base station.

[0060] The embodiment of the present application does not limit the carrying method of the first precoded data. Optionally, the first information is carried by a target data packet, and the target data packet includes header information and user information of N users, where N is a positive integer, wherein:

[0061] The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station;

[0062] The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

[0063] In this optional implementation manner, the first identification information (Flag) may be agreed upon by a protocol or between the interfering station and the interfering station, and may be specifically determined based on actual conditions, and is not limited in this embodiment of the present application.

[0064] Optionally, the cell-level information of the interfering station may include, but is not limited to, at least one of the following items corresponding to the first downlink data: identification information (Cell_id) of the interfering station cell, such as a physical cell identifier (Physical Cell Identifier, PCI); subframe number; time slot number; and number of users (UE_num) N.

[0065] The port number (Port_num) may be used for, but is not limited to: channel estimation between the victim station and the interfering station; and generation of the interference cancellation signal.

[0066] The resource mapping information (Map_info) corresponding to the user may include the starting position and occupied symbol information of the physical resource block (PRB), which is used to determine the frequency domain position corresponding to the interference signal of the interfering station, so as to eliminate the interference signal using the interference cancellation signal at the corresponding frequency domain position.

[0067] To understand the structure of the target data packet, please refer to Figure 4 .

[0068] exist Figure 4 The Head contains the overall information of the data packet, indicating that the data packet is used to transmit the cell-level data of the interleaved time slot of the interfering station, including the PCI of the interfering station cell currently being transmitted, the subframe number and time slot number of the transmitted data, and the number of scheduled users. It consists of the following fields:

[0069] Flag: Data packet identifier, used to identify the downlink data packet of the interfering station;

[0070] Cell_id: PCI of the current interfering station cell;

[0071] Subframe: The subframe number of the current transmitted data;

[0072] Slot: the timeslot number of the current data transmission;

[0073] UE_num: total number of downlink users in the current subframe.

[0074] User data packets, with a total length determined by UE_num, are arranged in user number order. Each user packet contains the number of transmit ports, precoded data for each port for interference reconstruction, and resource mapping information for the user required for interference cancellation. The specific fields are as follows:

[0075] Port_num: The number of ports supported by the user. The downlink data of each user of the jamming station is transmitted in the order of the ports.

[0076] Map_info: User resource mapping information, including prb starting position and symbol information

[0077] Port1_data~PortN_data: precoded data of all sending ports of the user, arranged in symbol order.

[0078] It should be noted that Figure 4 The target data packet is only an example and does not limit the specific structure of the target data packet in the embodiments of the present application.

[0079] See also Figure 5 , Figure 5 This is the second flow chart of the interference elimination method provided by the embodiment of the present application. The interference elimination method of the embodiment of the present application can be applied to the interfering station. Figure 5 As shown, the interference elimination method may include the following steps:

[0080] Step 501: Send precoded data in a downlink of the interfering station to a victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station.

[0081] Optionally, the precoded data is carried by a target data packet, and the target data packet includes header information and user information of N users, where N is a positive integer, wherein:

[0082] The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station;

[0083] The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

[0084] Optionally, the cell-level information of the interfering station includes at least one of the following items corresponding to the precoded data: identification information of the cell of the interfering station; a subframe number; a time slot number; and the number of users N.

[0085] In the interference cancellation method of this embodiment, the interfering station can transmit precoded data in the downlink to the interfered station. In this way, the interfered station can directly generate an interference cancellation signal corresponding to the interference signal of the interfering station based on the precoded data and the channel environment between the interfering station and the interfered station, thereby reducing the impact of the interference signal of the interfering station on the interfered station by using the interference cancellation signal. It can be seen that the embodiment of the present application can reduce the impact of the interference signal of the interfering station on the interfered station by generating the interference cancellation signal at the interfered station without affecting the performance of the base station.

[0086] It should be noted that this embodiment is an implementation of the jamming station corresponding to the above method embodiment, so reference may be made to the relevant description in the above method embodiment, and the same beneficial effects can be achieved. To avoid repetition, no further description will be given here.

[0087] The various optional implementation methods introduced in the embodiments of the present application can be implemented in combination with each other or separately if they do not conflict with each other, and the embodiments of the present application do not limit this.

[0088] For easier understanding, the following examples are provided:

[0089] In this example, the transmission position is advanced to the frequency domain data precoded by the interfering station. At this time, the data is mapped to the sending port. No additional processing is required at the interfered station. This data can be directly used with the channel estimation result for calculation. The processing complexity of the interfered station is low, and the required interface bandwidth is less than the full-bandwidth OFDM symbol data bandwidth. The transmission scheme and base station processing flow are as follows: Figure 6a shown.

[0090] The principle of interference elimination technology can be found in Figure 6b,The reconstruction of the interference signal of the interfered station requires obtaining the ,inter-station channel environment and the data sent by the downlink port of the ,interfering station, where the channel environment can be obtained by ,channel estimation based on the pilot.

[0091] The victim station can use the designed data transmission interface format, such as Figure 5 , transmit precoded data.

[0092] The embodiments of this application support interference cancellation at the victim station's baseband, reducing the processing complexity of the victim station while maintaining optimal interface bandwidth. This solution can be used in conjunction with related technologies to achieve better interference cancellation, or it can be used alone to eliminate interference without affecting the base station's capacity and coverage.

[0093] See also Figure 7 , Figure 7 This is one of the structural diagrams of the interference elimination device provided in the embodiment of the present application. Figure 7 As shown, the interference elimination device 700 includes:

[0094] The first transceiver 701 is configured to receive precoded data in a downlink from an interfering station;

[0095] Processor 702, configured to:

[0096] generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station;

[0097] The interference signal is cancelled using the interference cancellation signal.

[0098] Optionally, the precoded data is carried by a target data packet, and the target data packet includes header information and user information of N users, where N is a positive integer, wherein:

[0099] The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station;

[0100] The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

[0101] Optionally, the cell-level information of the interfering station includes at least one of the following items corresponding to the precoded data: identification information of the cell of the interfering station; a subframe number; a time slot number; and the number of users N.

[0102] The interference elimination device 700 can realize the embodiment of the present application Figure 3The various processes of the method embodiment and the achievement of the same beneficial effects are not described again here to avoid repetition.

[0103] See also Figure 8 , Figure 8 This is the second structural diagram of the interference elimination device provided in the embodiment of the present application. Figure 8 As shown, the interference elimination device 800 includes:

[0104] The second transceiver 801 is used to send first information to the interfered station, where the first information includes unmodulated first downlink data in the downlink of the interfering station, and the first downlink data is used by the interfered station to generate an interference cancellation signal, and the interference cancellation signal corresponds to the interference signal of the interfering station received by the interfered station.

[0105] Optionally, the precoded data is carried by a target data packet, and the target data packet includes header information and user information of N users, where N is a positive integer, wherein:

[0106] The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station;

[0107] The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

[0108] Optionally, the cell-level information of the interfering station includes at least one of the following items corresponding to the precoded data: identification information of the cell of the interfering station; a subframe number; a time slot number; and the number of users N.

[0109] The interference elimination device 800 can realize the embodiment of the present application Figure 4 The various processes of the method embodiment and the achievement of the same beneficial effects are not described again here to avoid repetition.

[0110] The present application also provides a base station. Figure 9 The base station may include a processor 901, a memory 902, and a program 9021 stored in the memory 902 and executable on the processor 901. When the base station is an interfered station, the program 9021 may be executed by the processor 901 to achieve Figure 3 Any steps in the corresponding method embodiments and achieving the same beneficial effects are not described here. In the case where the base station is an interfering station, program 9021 can be executed by processor 901 to achieve Figure 4 Any steps in the corresponding method embodiments and achieving the same beneficial effects will not be repeated here.

[0111] A person skilled in the art will understand that all or part of the steps of the above-mentioned embodiment method can be completed by hardware related to program instructions, and the program can be stored in a readable medium. The embodiment of the present application also provides a readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned method can be implemented. Figure 2 or Figure 4 Any steps in the corresponding method embodiments can achieve the same technical effects and will not be described again here to avoid repetition.

[0112] The storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0113] The above is a preferred implementation of the embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An interference elimination method, applied to an interfered station, characterized in that: include: receiving precoded data in a downlink of an interfering station, where the precoded data is data mapped to a transmitting port by the interfering station; generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station; Eliminating the interference signal using the interference cancellation signal; The precoded data is carried by a target data packet, which includes header information and user information of N users, where N is a positive integer, wherein: The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station; The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

2. The method according to claim 1, characterized in that The cell-level information of the interfering station includes at least one of the following items corresponding to the precoding data: identification information of the cell of the interfering station; subframe number; time slot number; and the number N of users.

3. An interference elimination method, applied to an interfering station, characterized in that: include: Sending precoded data in a downlink of the interfering station to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station, and the precoded data is data mapped to a transmitting port by the interfering station; The precoded data is carried by a target data packet, which includes header information and user information of N users, where N is a positive integer, wherein: The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station; The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

4. The method according to claim 3, characterized in that The cell-level information of the interfering station includes at least one of the following items corresponding to the precoding data: identification information of the cell of the interfering station; subframe number; time slot number; and the number N of users.

5. An interference elimination device, applied to an interfered station, characterized in that: include: A first transceiver, configured to receive precoded data in a downlink of an interfering station, wherein the precoded data is data mapped to a transmitting port by the interfering station; Processor for: generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station; Eliminating the interference signal using the interference cancellation signal; The precoded data is carried by a target data packet, which includes header information and user information of N users, where N is a positive integer, wherein: The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station; The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

6. An interference elimination device, applied to an interference station, characterized in that: include: a second transceiver, configured to send precoded data in a downlink of the interfering station to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station, and the precoded data is data mapped to a transmitting port by the interfering station; The precoded data is carried by a target data packet, which includes header information and user information of N users, where N is a positive integer, wherein: The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station; The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

7. An interference cancellation system, characterized in that: Including disturbing stations and disturbed stations, among which: The interfering station is configured to: send precoded data in a downlink of the interfering station to the victim station, where the precoded data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station, and the precoded data is data mapped to a transmitting port by the interfering station; The disturbed station is configured to: receiving precoded data in a downlink from an interfering station; generating an interference cancellation signal according to the precoded data and a channel environment between the victim station and the interfering station, wherein the interference cancellation signal corresponds to the interference signal of the interfering station received by the victim station; Eliminating the interference signal using the interference cancellation signal; The precoded data is carried by a target data packet, which includes header information and user information of N users, where N is a positive integer, wherein: The header information includes: first identification information, the first identification information is used to identify the target data packet as a data packet for transmitting the precoded data; cell-level information of the interfering station; The user information includes: the number of ports corresponding to the user; resource mapping information corresponding to the user; and the precoding data corresponding to each port of the user.

8. A base station, comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory to implement the steps of the interference elimination method according to any one of claims 1 to 2; or the steps of the interference elimination method according to any one of claims 3 to 4.

9. A readable storage medium for storing a program, characterized in that: When the program is executed by a processor, the steps of the interference elimination method according to any one of claims 1 to 2 are implemented; Or, the steps in the interference elimination method according to any one of claims 3 to 4.

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