CN115695107A - Interference elimination method, related equipment and readable storage medium - Google Patents
Interference elimination method, related equipment and readable storage medium Download PDFInfo
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- CN115695107A CN115695107A CN202110831653.4A CN202110831653A CN115695107A CN 115695107 A CN115695107 A CN 115695107A CN 202110831653 A CN202110831653 A CN 202110831653A CN 115695107 A CN115695107 A CN 115695107A
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Abstract
The application provides an interference elimination method, related equipment and a readable storage medium. The interference cancellation method may include: receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station; generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference applying station; generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station; and eliminating the interference signal by using the interference elimination signal. According to the method and the device, the influence of the interference signal of the interference station on the interfered station can be reduced by generating the interference elimination signal at the interfered station on the basis of not influencing the performance of the base station.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an interference cancellation method, a related device, and a readable storage medium.
Background
With the development of mobile communication technology, a mobile communication system has both a large downlink requirement of a public network and a large uplink application requirement of a vertical industry, so that different time slot proportioning requirements appear in the same frequency band, different base stations may simultaneously perform uplink and downlink signal processing in certain time slots, and a base station (interference station) performing downlink transmission in these crossed time slots may generate interference to a base station (interference station) receiving uplink.
At present, the interference between base stations is usually reduced by reducing the downlink transmission power of the interfering station in the cross time slot or staggering the user resource frequency domain of the interfering station and the interfered station in the cross time slot. However, the above-mentioned manner of mitigating interference between base stations may affect the coverage or capacity of the base station, resulting in low performance of the base station.
Disclosure of Invention
The embodiment of the application provides an interference elimination method, related equipment and a readable storage medium, so as to solve the problem of interference among base stations on the basis of not reducing the performance of the base stations.
To solve the above problems, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides an interference cancellation method, which is applied to a victim station, and the method includes:
receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference applying station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
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:
sending first information to a victim station, wherein the first information includes first downlink data which is not modulated in a downlink of the victim station, the first downlink data is used for the victim station to generate an interference cancellation signal, and the interference cancellation signal corresponds to an interference signal of the victim station, which is received by the victim station.
In a third aspect, an embodiment of the present application further provides an interference cancellation apparatus, applied to a victim station, including:
the first transceiver is used for receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
a processor to:
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
In a fourth aspect, an embodiment of the present application further provides an interference cancellation apparatus, applied to an interfering station, including:
the second transceiver is configured to send first information to a victim station, where the first information includes first downlink data that is not modulated in a downlink of the victim station, and the first downlink data is used for the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to an interference signal of the victim station received by the victim station.
In a fifth aspect, an embodiment of the present application further provides an interference cancellation system, including an interfering station and a victim station, where:
the disturbing station is used for: sending first information to a victim station, wherein the first information comprises first downlink data which is not modulated in a downlink of the victim station, the first downlink data is used for the victim station to generate an interference cancellation signal, and the interference cancellation signal corresponds to an interference signal of the victim station received by the victim station;
the victim station is configured to:
receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
In a sixth aspect, an embodiment of the present application further provides a base station, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor, configured to read a program in the memory to implement the steps of the method according to the first aspect; or, a step in a method as described in the second aspect above.
In a seventh aspect, an embodiment of the present application further provides a readable storage medium for storing a program, where the program implements the steps in the method according to the foregoing first aspect when executed by a processor, or implements the steps in the method according to the foregoing second aspect.
In this embodiment, the interfering station may transmit, to the interfered station, the first downlink data that is not modulated in the downlink, so that the interfered station may generate precoded data corresponding to the first downlink data, and may generate an interference cancellation signal corresponding to an interference signal of the interfering station according to the precoded data and a channel environment between the interfering station and the interfered station, so that an influence of the interference signal of the interfering station on the interfered station may be reduced by using the cancellation interference signal. Therefore, the method and the device can reduce the influence of the interference signal of the disturbing station on the disturbed station by generating the interference elimination signal at the disturbed station on the basis of not influencing the performance of the base station.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flow chart of a downlink provided in an embodiment of the present application;
fig. 2 is a flowchart illustrating an interference cancellation method according to an embodiment of the present application;
FIG. 3 is a diagram illustrating a structure of a destination packet according to an embodiment of the present application;
fig. 4 is a second flowchart of an interference cancellation method according to an embodiment of the present application;
FIG. 5 is an interaction schematic diagram of a disturbance station and a disturbance station provided by an embodiment of the application;
fig. 6 is a schematic structural diagram of an interference cancellation apparatus provided in the present application;
fig. 7 is a second schematic structural diagram of an interference cancellation apparatus provided in the present application;
fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Further, as used herein, "and/or" means at least one of the connected objects, e.g., a and/or B and/or C, means 7 cases including a alone, B alone, C alone, and both a and B present, B and C present, a and C present, and a, B, and C present.
For convenience of understanding, some contents related to the embodiments of the present application are described below.
The downlink flow can be seen in fig. 1. As shown in fig. 1, the Code words (Code words) obtained by encoding are sequentially processed by the following devices and transmitted from Antenna Ports:
scrambling (Scrambling) → Modulation mapper (Modulation mapper) → Layer mapper (Layer mapper) → Precoding & Antenna Port mapper (Precoding & Antenna Port mapper) → Resource Element mapper (Resource Element mapper) → Orthogonal Frequency Division Multiplexing (OFDM) signal generator (OFDM signal generation).
The following describes an interference cancellation method provided in the embodiments of the present application.
The method and the device aim to reconstruct or recover the interference signal of the interference station at the interfered station so as to offset the actually received interference signal of the interference station by using the reconstructed or recovered interference signal, thereby reducing or eliminating the influence of the received interference signal of the interference station on the interfered station. In order to enable the interfered station to reconstruct or recover the interference signal of the interference station, the interference station can send downlink data in own downlink to the interfered station through inter-station transmission.
In the embodiment of the present application, the interference signal of the interfering station is reconstructed or recovered, which may be referred to as an interference cancellation signal.
Referring to fig. 2, fig. 2 is a schematic flowchart of an interference cancellation method according to an embodiment of the present application. The interference cancellation method shown in fig. 2 may be applied to a victim station. As shown in fig. 2, the interference cancellation method may include the following steps:
In this embodiment of the present application, the downlink data sent by the scrambling station may be first downlink data that is not modulated in a downlink, that is, the scrambling station determines a transmission position transmitted between stations as a position before modulation of the downlink of the scrambling station, and belongs to a bit-level data position. Since the first downlink data is not modulated, and the first downlink data is IQ symbol data, compared with data after modulation, the occupied transmission resources, such as transmission bandwidth, can be reduced, and meanwhile, the occupied storage resources can be reduced.
In a specific implementation manner, in a first implementation manner, the first downlink data may be downlink data after encoding and before scrambling, that is, the scrambling station determines a transmission position of transmission between stations as a position after encoding and before scrambling.
In the second implementation manner, optionally, the first downlink data may be scrambled downlink data. In this alternative embodiment, the downlink data sent by the scrambling station may be the downlink data after scrambling and before encoding, that is, the scrambling station determines the transmission position transmitted between stations as the position before modulation after scrambling. In this way, compared with the first implementation, the victim station in the second implementation does not need to scramble the first downlink data, so that the processing complexity of the victim station on the first downlink data can be reduced.
In this embodiment, the victim station and the victim station may implement transmission of the first information through a backplane or an Xn interface. Namely, the disturbing station may send the first information through the backplane or the Xn interface, and accordingly, the victim station may receive the first information through the backplane or the Xn interface.
It should be noted that, an implementation process of generating the first precoded data by the victim station according to the first downlink data is the same as an implementation process of generating the precoded data by the perturbation station according to the first downlink data, for example, for the first downlink data of the first implementation manner, the victim station may sequentially perform scrambling, modulation, layer mapping and precoding processing on the first downlink data to obtain the first precoded data; for the first downlink data of the second implementation manner, the victim station may sequentially perform modulation, layer mapping, and precoding processing on the first downlink data to obtain the first precoded data.
In specific implementation, processing information, such as scrambling information, modulation information, layer mapping information, and/or precoding information, for processing the first downlink data by the victim station may be read from a protocol, or may be received and acquired from the victim station, which may be specifically determined according to actual situations, which is not limited in this embodiment of the present application.
Optionally, the first information further includes processing information related to the first downlink data, and the processing information includes at least one of: modulation information, layer mapping information, and precoding information. For the first implementation manner described above, the processing information may further include scrambling information. Further, the modulation information may include a modulation mode (Mod _ mode); the Layer mapping information may include a Layer number (Layer _ num); the precoding information may include Multiple-Input Multiple-Output (MIMO) information (MIMO _ info), but is not limited thereto. In this optional embodiment, the processing information may be carried in the first information and jointly transmitted with the first downlink data, so that the efficiency of downlink data processing may be improved. Of course, it is to be understood that, in other embodiments, the processing information may also be sent independently from the first downlink data, which may be determined specifically according to actual needs, and this is not limited in this embodiment of the present application.
In this embodiment of the present application, the victim station may recover or reconstruct an interference signal of the aggressor station according to the first precoded data and the channel environment, to obtain an interference cancellation signal, where the interference cancellation signal corresponds to an interference signal of the aggressor 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 a process that data sent by a downlink port of the scrambling station reaches the victim station through the channel environment, and optionally, the victim station can multiply the first precoded data with the channel environment to obtain the interference cancellation signal, but is not limited thereto.
The channel environment can be obtained by the victim station through channel estimation based on orthogonal pilots of the victim station and the aggressor station.
And step 204, eliminating the interference signal by using the interference elimination signal.
In a specific implementation, the victim 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 aggressor station, so as to cancel interference of the interference signal of the aggressor station on the victim station.
It should be noted that the embodiments of the present application may be applied to interference cancellation of any interfering station, especially interference cancellation of an interfering station of a multi-stream multi-channel macro station.
In the interference cancellation method of this embodiment, the victim station may obtain the first downlink data that is not modulated in the downlink of the aggressor station, so that the victim station may generate precoded data corresponding to the first downlink data, and may generate an interference cancellation signal corresponding to an interference signal of the aggressor station according to the precoded data and a channel environment between the aggressor station and the victim station, so as to reduce an influence of the interference signal of the aggressor station on the victim station by using the cancellation interference signal. Therefore, the method and the device can reduce the influence of the interference signal of the interference station on the interfered station by generating the interference elimination signal at the interfered station on the basis of not influencing the performance of the base station.
The embodiment of the present application does not limit the carrying manner of the first information, and optionally, the first information is carried by a target data packet, where the target data packet includes header information (Head) and user information of N users, and N is a positive integer, where:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the offending station;
the User information (or called User data) includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
In this optional implementation manner, the first identification information (Flag) may be agreed by a protocol or agreed between the interfering station and the interfering station, which may be specifically determined according to an actual situation, and this is not limited in this embodiment of the present application.
The cell-level information of the interfering station may include at least one of the following corresponding to the first downlink data: identity information (Cell _ id) of the aggressor Cell, such as Physical Cell Identifier (PCI); subframe (Subframe) number; slot (Slot) number; number of users (UE _ num) N.
The number of codewords (coded _ num) corresponding to the user is used for extracting the first downlink data.
The Resource mapping information (Map _ info) corresponding to the user may include a starting position of a Physical Resource Block (PRB) and occupied symbol information, and is used to determine a frequency domain position corresponding to an interference signal of the interference applying station, so as to remove the interference signal by using an interference cancellation signal in the corresponding frequency domain position.
Optionally, the user information further includes a Port number (Port _ num) corresponding to the user, and the Port number may be, but is not limited to: channel estimation between the victim station and the aggressor station; the generation of the interference cancellation signal can improve the utilization rate of the target data packet. It should be noted that, the specific usage of the port number may refer to the related art, and the embodiment of the present application is not described.
For the convenience of understanding the structure of the target packet, please refer to fig. 3.
In fig. 3, the Head contains the general information of the data packet, which indicates that the data packet is used to transmit the cell-level data of the cross slot of the offender station, including the currently transmitted cell PCI of the offender station, the subframe number and the slot number of the transmission data, and the number of scheduled users, and is composed of the following fields:
flag: the data packet identification is used for identifying a downlink data packet of the interference station;
cell _ id is the Cell PCI of the current interference station;
subframe is the Subframe number of the current transmission data;
slot is the time Slot number of the current transmission data;
UE _ num: the total number of downlink users in the current subframe.
User data packets are arranged according to a user number sequence, user data are data after downlink scrambling of an interference station, code word number, a modulation mode, the number of layers and MIMO precoding configuration of the user data are required to be transmitted, and interference station resource mapping information required when a interfered station completes downlink symbol-level baseband processing of the interference station and interference elimination is carried out is provided, and the specific fields are as follows:
code _ num is the number of user code words;
mod _ mode is a user modulation mode;
layer _ num is the number of user layers;
MIMO _ info user MIMO configuration;
map _ info: mapping information of user resources, starting position of prb and occupied symbol information;
the code word1_ data is data after scrambling of a code word1 of the scrambling station;
and 2, code 2_ data is data after scrambling of code 2 of the scrambling station.
It should be noted that the destination packet in fig. 3 is only an example, and does not limit the specific structure of the destination packet in the embodiment of the present application.
Referring to fig. 4, fig. 4 is a second flowchart of an interference cancellation method according to an embodiment of the present application. The interference elimination method of the embodiment of the application can be applied to interference stations. As shown in fig. 4, the interference cancellation method may include the following steps:
Optionally, the first downlink data is scrambled downlink data.
Optionally, the first information further includes processing information related to the first downlink data, and the processing information includes at least one of: modulation information, layer mapping information, and precoding information.
Optionally, the first information is carried by a target data packet, where the target data packet includes header information and user information of N users, and N is a positive integer, where:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the offending station;
the user information includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
Optionally, the user information further includes a port number corresponding to the user.
In the interference cancellation method of this embodiment, the interfering station may transmit, to the interfered station, the first downlink data that is not modulated in the downlink, so that the interfered station may generate precoded data corresponding to the first downlink data, and may generate an interference cancellation signal corresponding to an interference signal of the interfering station according to the precoded data and a channel environment between the interfering station and the interfered station, so that the interference cancellation signal may be used to reduce an influence of the interference signal of the interfering station on the interfered station. Therefore, the method and the device can reduce the influence of the interference signal of the disturbing station on the disturbed station by generating the interference elimination signal at the disturbed station on the basis of not influencing the performance of the base station.
It should be noted that, the present embodiment is implemented as an implementation of the scrambling station corresponding to the above method embodiment, and therefore, reference may be made to the relevant description in the above method embodiment, and the same beneficial effects may be achieved. To avoid duplicate description, it is not repeated herein.
The various optional implementations described in the embodiments of the present application may be implemented in combination with each other or implemented separately without conflicting with each other, and the embodiments of the present application are not limited to this.
For ease of understanding, the examples are illustrated below:
in this example, the transmission position of the scrambling station data source may be moved up to the bit level data position of the downlink, specifically, the transmission position may be the position before modulation after scrambling the baseband data, and at this time, the transmission bandwidth is not modulated to IQ symbol data, and the transmission bandwidth is reduced to below 10G under the 16-stream configuration, which may greatly save the transmission bandwidth, and the existing 10G/25G Xn interface may meet the requirement, and may reduce the storage resource required in the transmission process. For ease of understanding, please refer to fig. 5.
Correspondingly, precoding data of each sending port of the interference station needs to be generated at the interfered station, so that interference reconstruction is performed after channel estimation between the stations, and interference elimination is performed, so that the method is different from a method in which the interfered station only performs a downlink flow for connecting users, the interfered station is also used for part of downlink baseband flows of the interference station, and particularly symbol-level processing such as downlink modulation, layer mapping, precoding and the like of the interference station needs to be completed. Under the condition that the victim station receives the downlink data of the scrambling station before modulation after scrambling, the victim station may not include or use a more complex Low Density Parity Check (LDPC) module with higher requirements on processing performance and resources to perform scrambling processing on the received downlink data, so that the processing complexity of the base station may be reduced.
The victim station may first obtain cell-level parameters of the offender station, i.e., the frame time slot and the total number of users of the currently transmitted data, according to a designed data transmission interface format, as shown in fig. 3. And then, acquiring scrambled data of each user of the interference station, extracting corresponding scrambled data according to the number of codewords configured by the user, completing a modulation process according to a modulation mode of the user, completing layer mapping and precoding processes according to the number of user layers and user MIMO information, generating transmission port data of the interference station, and performing interference signal reconstruction with a channel estimation result between cross time slot stations. The subsequent interference cancellation process also needs to transmit mapping information of user resources of the interference station in the cross time slot, that is, information of the starting position of the user prb and occupied symbols, so as to ensure cancellation at the corresponding frequency domain position.
The embodiment of the application supports further eliminating residual interference in the base band of the victim station, can obviously reduce transmission bandwidth, reduces interface specification, and simultaneously considers the processing complexity of the victim station. Can be used together with the related technology or independently, realizes better interference elimination effect and reduces the influence on the coverage and the capacity of the base station.
Referring to fig. 6, fig. 6 is a structural diagram of an interference cancellation apparatus according to an embodiment of the present application. As shown in fig. 6, the interference cancellation apparatus 600 includes:
a first transceiver 601, configured to receive first information sent by an interfering station, where the first information includes first downlink data that is not modulated in a downlink of the interfering station;
a processor 602 configured to:
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
Optionally, the first downlink data is scrambled downlink data.
Optionally, the first information further includes processing information related to the first downlink data, and the processing information includes at least one of: modulation information, layer mapping information, and precoding information.
Optionally, the first information is carried by a target data packet, where the target data packet includes header information and user information of N users, where N is a positive integer, where:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the offending station;
the user information includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
Optionally, the user information further includes a port number corresponding to the user.
The interference cancellation apparatus 600 can implement each process of the method embodiment in fig. 2 in the embodiment of the present application, and achieve the same beneficial effects, and is not described herein again to avoid repetition.
Referring to fig. 7, fig. 7 is a second structural diagram of an interference cancellation apparatus according to an embodiment of the present application. As shown in fig. 7, the interference cancellation apparatus 700 includes:
the second transceiver 701 is configured to send first information to a victim station, where the first information includes first downlink data that is not modulated in a downlink of the victim station, and the first downlink data is used for the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to an interference signal of the victim station received by the victim station.
Optionally, the first downlink data is scrambled downlink data.
Optionally, the first information further includes processing information related to the first downlink data, and the processing information includes at least one of: modulation information, layer mapping information, and precoding information.
Optionally, the first information is carried by a target data packet, where the target data packet includes header information and user information of N users, where N is a positive integer, where:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the disturbing station;
the user information includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
Optionally, the user information further includes a port number corresponding to the user.
The interference cancellation apparatus 700 can implement each process of the method embodiment in fig. 4 in the embodiment of the present application, and achieve the same beneficial effects, and is not described herein again to avoid repetition.
The embodiment of the application also provides a base station. Referring to fig. 8, the base station may include a processor 801, a memory 802, and a program 8021 stored on the memory 802 and operable on the processor 801. When the base station is a victim station, the program 8021 can implement any steps in the method embodiment corresponding to fig. 2 and achieve the same beneficial effects when being executed by the processor 801, and is not described herein again. When the base station is an interference station, the program 8021 can implement any steps in the method embodiment corresponding to fig. 4 and achieve the same beneficial effects when being executed by the processor 801, and is not described herein again.
Those skilled in the art will appreciate that all or part of the steps of the method according to the above embodiments may be implemented by hardware related to program instructions, and the program may be stored in a readable medium. An embodiment of the present application further provides a readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, any step in the method embodiment corresponding to fig. 2 or fig. 4 may be implemented, and the same technical effect may be achieved, and in order to avoid repetition, details are not repeated here.
The storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure, and it is intended that such changes and modifications be considered as within the scope of the disclosure.
Claims (15)
1. An interference cancellation method applied to a victim station, the method comprising:
receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference applying station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
2. The method of claim 1, wherein the first downlink data is scrambled downlink data.
3. The method of claim 1, wherein the first information further comprises processing information related to the first downlink data, the processing information comprising at least one of: modulation information, layer mapping information, and precoding information.
4. The method of claim 3, wherein the first information is carried by a destination packet, the destination packet includes header information and user information of N users, N is a positive integer, and wherein:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the disturbing station;
the user information includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
5. The method of claim 4, wherein the user information further comprises a port number corresponding to the user.
6. An interference cancellation method applied to an interfering station, the method comprising:
sending first information to a victim station, wherein the first information includes first downlink data which is not modulated in a downlink of the victim station, the first downlink data is used for the victim station to generate an interference cancellation signal, and the interference cancellation signal corresponds to an interference signal of the victim station, which is received by the victim station.
7. The method of claim 6, wherein the first downlink data is scrambled downlink data.
8. The method of claim 6, wherein the first information further comprises processing information related to the first downlink data, the processing information comprising at least one of: modulation information, layer mapping information, and precoding information.
9. The method of claim 8, wherein the first information is carried by a destination packet, the destination packet includes header information and user information of N users, N is a positive integer, and wherein:
the header information includes: first identification information, wherein the first identification information is used for identifying the target data packet as a data packet for transmitting the first downlink data; cell level information of the offending station;
the user information includes: the number of code words corresponding to the user; the processing information corresponding to the user; resource mapping information corresponding to the user; and the first downlink data corresponding to the user.
10. The method of claim 9, wherein the user information further comprises a port number corresponding to the user.
11. An interference cancellation apparatus applied to a victim station, comprising:
the first transceiver is used for receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
a processor configured to:
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
12. An interference cancellation apparatus applied to an interfering station, comprising:
the second transceiver is configured to send first information to a victim station, where the first information includes first downlink data that is not modulated in a downlink of the victim station, and the first downlink data is used for the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to an interference signal of the victim station that is received by the victim station.
13. An interference cancellation system comprising an offender station and a victim station, wherein:
the disturbing station is used for: sending first information to a victim station, where the first information includes first downlink data that is not modulated in a downlink of the aggressor station, and the first downlink data is used by the victim station to generate an interference cancellation signal, where the interference cancellation signal corresponds to an interference signal of the aggressor station received by the victim station;
the victim station is configured to:
receiving first information sent by an interference station, wherein the first information comprises first downlink data which is not modulated in a downlink of the interference station;
generating first pre-coded data according to the first information, wherein the first pre-coded data corresponds to pre-coded data in a downlink of the interference applying station;
generating an interference elimination signal according to the first pre-coded data and a channel environment between the interfered station and the interfering station, wherein the interference elimination signal corresponds to an interference signal of the interfering station received by the interfered station;
and eliminating the interference signal by using the interference elimination signal.
14. A base station, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read a program in a memory to implement the steps in the interference cancellation method according to any one of claims 1 to 5; or, a step in the interference cancellation method according to any one of claims 6 to 10.
15. A readable storage medium storing a program, wherein the program, when executed by a processor, implements the steps in the interference cancellation method of any one of claims 1 to 5; or, a step in the interference cancellation method according to any one of claims 6 to 10.
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