Cross-interference positioning method and apparatus, computer device, and readable medium

Abstract

The present disclosure provides a cross interference positioning method, a cooperative device sends a characteristic signal sending notification carrying a resource location to each second base station (suspected interfering base station) according to a pre-configured sending sequence and sending period of the characteristic signal, so that each second base station generates a characteristic signal and sends the characteristic signal through each port at the resource location; and sends a characteristic signal detection notification carrying the resource location to a first base station (suspected interfered base station), so that the first base station detects the characteristic signal at the resource location; if the first base station receives the characteristic signal sent by the second base station at the resource location, it can be determined that the second base station is an interfering base station, and cross interference positioning is realized. The embodiment of the present disclosure has high flexibility, is easy to implement, has high interference positioning accuracy, has the smallest loss on the interfering side, and can also relieve the interference on the interfered side. The present disclosure also provides a cross interference suppression method, device, computer device and readable medium.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and specifically to a method, apparatus, computer device, and readable medium for locating cross-interference. Background Technology

[0002] In TDD (Time Division Duplexing) wireless systems, some time slots are downlink time slots (D) used for transmitting downlink signals, some are uplink time slots (U) used for receiving uplink signals, and some are special time slots (S) used for uplink / downlink switching. These special time slots are typically divided into three parts: DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS (Uplink Pilot Time Slot). Different application scenarios have different uplink bandwidth requirements. Increasing the proportion of uplink time domain resources (uplink time slots, subframes) is the most direct way. However, when different scenarios coexist, the frame structure configurations differ, which can lead to downlink signal interference from neighboring base stations colliding with the uplink reception of local base stations, resulting in strong cross-slot interference.

[0003] Figure 1 This involves a scenario where different frame structures coexist in a certain operator's existing network. Macro cells use a 7D3U frame structure, while micro cells use a 1D3U frame structure. Actual measurements revealed that the uplink timeslot (U) of the micro cell's 1D3U frame is severely interfered with by the macro cell's 7D3U downlink signal, as shown by the black and white arrows in the diagram above. When the macro cell's interference signal is 3dB higher than the noise floor, the affected micro cell experiences an uplink traffic loss of over 10%; when the macro cell's interference signal is 10dB higher than the noise floor, the affected micro cell experiences an uplink traffic loss of over 25%. In practice, the interference from the macro cell's downlink to the micro cell's uplink can reach 20dB or more, thus significantly impacting the micro cell's uplink performance. Therefore, a solution is needed to reduce the interference from the macro cell's downlink to the micro cell's uplink and improve the micro cell's uplink performance.

[0004] In addition, in scenarios where the base station clock is out of sync, the downlink signal of the out-of-sync base station will also interfere with the uplink reception of adjacent base stations.

[0005] In related technologies, the method of manually operating interference detection instruments to analyze the signals of the disturbed system and the interfering system is used to detect whether there is cross-time slot interference in the base station in the TDD system. When the interfering station is detected, the downlink transmission power of the interfering station is reduced manually or the downlink transmission time slot of the interfering station is changed. This method has a long detection time, is inaccurate, requires manual operation, is inefficient, has poor repeatability, and the downlink loss of the interfering station is large. Summary of the Invention

[0006] This disclosure provides a method, apparatus, computer device, and readable medium for locating cross-interference.

[0007] In a first aspect, embodiments of this disclosure provide a cross-interference location method, applied to a first base station, the first base station being a suspected interfered base station, the method comprising:

[0008] Receive a feature signal detection notification sent by a cooperative device, and obtain the resource location carried therein, wherein the resource location includes at least one of the following: time-domain resource location and frequency-domain resource location;

[0009] Detecting a feature signal at the resource location, and in response to receiving a feature signal sent by a second base station at the resource location via uplink, determining that the second base station is the scrambling base station of the first base station;

[0010] The characteristic signal is generated by the second base station after receiving the characteristic signal transmission notification sent by the coordinating device and transmitted downlink through each port of the second base station at the resource location. The characteristic signal transmission notification carries the resource location and is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order and the transmission period are pre-configured by the coordinating device for each of the second base stations. The second base station is a suspected harassing base station corresponding to the first base station.

[0011] In another aspect, this disclosure also provides a cross-interference location method, applied to a second base station, which is a suspected interfering base station, the method comprising:

[0012] The system receives a feature signal transmission notification sent by a coordinating device and obtains the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The feature signal transmission notification is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations.

[0013] A characteristic signal is generated and transmitted downlink from the second base station to the first base station at the resource location through each port of the second base station, wherein the first base station is a suspected disturbed base station corresponding to the second base station.

[0014] In another aspect, this disclosure also provides a cross-interference localization method applied to a cooperative device, wherein the cooperative device is configured with a first base station and multiple second base stations, and resource locations, transmission sequences, and transmission periods for characteristic signals of each second base station, wherein the resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations, wherein the first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station, and the method includes:

[0015] According to the transmission order and the transmission period, a feature signal transmission notification carrying the resource location is sent to each of the second base stations. The feature signal transmission notification is used to instruct each of the second base stations to generate a feature signal and transmit the feature signal downlink at the resource location through each port of the second base station.

[0016] A feature signal detection notification carrying the resource location is sent to the first base station, the feature signal detection notification being used to instruct the first base station to detect the feature signal at the resource location.

[0017] In another aspect, this disclosure also provides a base station, which is a first base station and a suspected interfered base station, including a first receiving module, a detection module and an interference location module. The first receiving module is used to receive a feature signal detection notification sent by a coordinating device and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location.

[0018] The detection module is used to detect feature signals at the resource location;

[0019] The interference location module is used to determine, in response to receiving a feature signal sent by the second base station uplink at the resource location, that the second base station is the interfering base station of the first base station;

[0020] The characteristic signal is generated by the second base station after receiving the characteristic signal transmission notification sent by the coordinating device and transmitted downlink through each port of the second base station at the resource location. The characteristic signal transmission notification carries the resource location and is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order and the transmission period are pre-configured by the coordinating device for each of the second base stations. The second base station is a suspected harassing base station corresponding to the first base station.

[0021] In another aspect, this disclosure also provides a base station, which is a second base station and a suspected scrambling base station, including a second receiving module, a first generating module, and a second sending module. The second receiving module is used to receive a feature signal transmission notification sent by a coordinating device and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The feature signal transmission notification is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations.

[0022] The first generation module is used to generate feature signals;

[0023] The second transmitting module is used to transmit the characteristic signal downlink to the first base station at the resource location through each port of the second base station, wherein the first base station is a suspected disturbed base station corresponding to the second base station.

[0024] In another aspect, this disclosure also provides a coordination device, which includes a first base station and a plurality of second base stations, as well as resource locations, transmission orders, and transmission periods for characteristic signals of each second base station. The resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations. The first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station. The coordination device includes a first notification module and a second notification module. The first notification module is used to send a characteristic signal transmission notification carrying the resource location to each second base station according to the transmission order and the transmission period. The characteristic signal transmission notification is used to instruct each second base station to generate a characteristic signal and transmit the characteristic signal downlink through each port of the second base station at the resource location.

[0025] The second notification module is used to send a feature signal detection notification carrying the resource location to the first base station, the feature signal detection notification being used to instruct the first base station to detect the feature signal at the resource location.

[0026] In another aspect, embodiments of this disclosure also provide a computer device, including: one or more processors; a storage device storing one or more programs thereon; when the one or more programs are executed by the one or more processors, the one or more processors implement the cross-interference localization method as described above.

[0027] In another aspect, embodiments of this disclosure also provide a computer-readable medium having a computer program stored thereon, wherein the program, when executed, implements the cross-interference localization method as described above.

[0028] The cross-interference localization method provided in this disclosure involves a coordinating device sending a notification carrying a resource location-based feature signal to each second base station (suspected interfering base station) according to a pre-configured transmission order and period of feature signals. This enables each second base station to generate a feature signal and transmit it downlink through its respective port at that resource location. Simultaneously, a feature signal detection notification carrying a resource location is sent to a first base station (suspected affected base station), enabling the first base station to detect the feature signal at that resource location. If the first base station receives the feature signal transmitted by the second base station uplink at that resource location, it can determine that the second base station is the interfering base station, thereby achieving cross-interference localization. This disclosure is based on coordination between suspected interfering base stations and suspected affected base stations, achieving adaptive cross-interference localization through air interface feature signal measurement. It offers high flexibility, ease of implementation, and high interference localization accuracy, minimizing losses on the interfering side while mitigating interference on the affected side. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of cross-interference between different frames in a TDD wireless system.

[0030] Figure 2 This is a schematic diagram of the system architecture of an embodiment of this disclosure;

[0031] Figure 3 This is a schematic diagram of the overall process for cross-interference localization provided in the embodiments of this disclosure;

[0032] Figure 4 A flowchart illustrating the cross-interference localization method applied to a first base station provided in this embodiment of the present disclosure. Figure 1 ;

[0033] Figure 5 A flowchart illustrating the cross-interference localization method applied to a first base station provided in this embodiment of the present disclosure. Figure 2 ;

[0034] Figure 6 A flowchart illustrating the cross-interference localization method applied to a second base station provided in this embodiment of the present disclosure. Figure 1 ;

[0035] Figure 7 A flowchart illustrating the cross-interference localization method applied to a first base station provided in this embodiment of the present disclosure. Figure 2 ;

[0036] Figure 8 A schematic diagram illustrating the process of determining a disturbed base station provided in an embodiment of this disclosure;

[0037] Figure 9 This is a schematic diagram illustrating the process of a second base station transmitting characteristic signals through each port, as provided in an embodiment of this disclosure.

[0038] Figure 10 A flowchart illustrating the cross-interference localization method for cooperative devices provided in this embodiment of the disclosure. Figure 1 ;

[0039] Figure 11 A flowchart illustrating the cross-interference localization method for cooperative devices provided in this embodiment of the disclosure. Figure 2 ;

[0040] Figure 12 This is a schematic diagram illustrating the mapping relationship between various ports, time domain, and frequency domain of the base station in Embodiment 1 of this disclosure;

[0041] Figure 13 This is a schematic diagram illustrating the mapping relationship between various ports, time domain, and frequency domain of the base station in Embodiment 2 of this disclosure;

[0042] Figure 14 This is a schematic diagram illustrating the mapping relationship between each port of the base station, CDM group, time domain, and frequency domain in Embodiment 3 of this disclosure;

[0043] Figure 15-17 This is a schematic diagram of the structure of the first base station provided in an embodiment of this disclosure;

[0044] Figure 18-20 This is a schematic diagram of the structure of the second base station provided in an embodiment of this disclosure;

[0045] Figure 21-22 A schematic diagram of the structure of the collaborative device provided in the embodiments of this disclosure. Detailed Implementation

[0046] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0047] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0048] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the said feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded.

[0049] The embodiments described herein can be described with reference to plan views and / or cross-sectional views using the ideal schematic diagrams of this disclosure. Therefore, the example illustrations can be modified according to manufacturing techniques and / or tolerances. Therefore, the embodiments are not limited to those shown in the drawings, but include modifications to configurations formed based on manufacturing processes. Therefore, the areas illustrated in the drawings are schematic in nature, and the shapes of the areas shown in the figures illustrate specific shapes of areas of an element, but are not intended to be limiting.

[0050] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0051] Cross-interference refers to the interference between downlink signals and uplink reception caused by a neighboring base station transmitting downlink signals at the same time as the base station is transmitting downlink signals.

[0052] This disclosure provides a cross-interference localization scheme, which is applied to, for example, cross-interference localization schemes. Figure 2 The system shown. For example... Figure 2 As shown, the system includes a first base station (suspected disrupted base station), a second base station (suspected disrupting base station), and a coordination device. Figure 3 This is a schematic diagram of the overall process for cross-interference localization provided in the embodiments of this disclosure, combined with Figure 2 and Figure 3As shown, the coordination device pre-configures a set of cooperating base stations, including a first base station and a second base station. The second base station is a suspected scrambling base station corresponding to the first base station, and the first base station is a suspected scrambled base station corresponding to the second base station. The coordination device is also configured with resource locations, transmission sequences, and transmission periods for the characteristic signals of each second base station. The coordination device is used to send a characteristic signal transmission notification carrying the resource location to each second base station according to the transmission sequence and transmission period, and to send a characteristic signal detection notification carrying the resource location to the first base station. The second base station is used to generate the characteristic signal and transmit it downlink to the first base station at the resource location through multiple air interfaces. The first base station is used to detect whether it receives the characteristic signal transmitted by the second base station at the resource location. If it receives it, it determines that the second base station is a scrambling base station of the first base station. The first base station is also used to calculate channel characteristic parameters and transmit these parameters to the scrambling base station through the coordination device. The second base station (i.e., the scrambling base station) is used to generate beam null weights based on the channel characteristic parameters and perform cross-interference suppression based on these beam null weights. The coordinating device can be a standalone device, such as the EdgeQos AI platform, or it can be a functional module integrated into the base station, for example, a CC board or a computing board (Node Engine).

[0053] like Figure 4 As shown in the embodiments of this disclosure, the cross-interference localization method is applied to a first base station, which is a suspected interfered base station. The method includes the following steps:

[0054] Step 11: Receive the feature signal detection notification sent by the cooperating device and obtain the resource location carried therein.

[0055] Resource locations include time-domain resource locations and / or frequency-domain resource locations, where time-domain resource locations can be time slot locations of radio frames.

[0056] Step 12: Detect feature signals at resource locations.

[0057] The characteristic signal is generated by the second base station after receiving the characteristic signal transmission notification from the coordinating device, and is transmitted downlink through each port of the second base station at the resource location. The characteristic signal transmission notification carries the resource location and is sent by the coordinating device to each second base station according to the transmission order and transmission period. The resource location, transmission order, and transmission period are pre-configured by the coordinating device for each second base station. Each second base station periodically transmits different characteristic signals through multiple ports according to the transmission order and transmission period. In other words, each second base station transmits its own characteristic signal in a time-sharing period, and for a single second base station, characteristic signals are transmitted simultaneously through different ports.

[0058] Step 13: In response to receiving a characteristic signal sent by the second base station in the uplink of the resource location, determine that the second base station is the scrambling base station of the first base station.

[0059] The second base station is the suspected interference base station corresponding to the first base station. It should be noted that the coordinating device pre-configures a set of coordinating base stations, which includes the first base station and the second base station. There can be one or more first base stations and the second base station. The coordinating device will inform each base station in the set of coordinating base stations of the set.

[0060] After the second base station transmits the characteristic signal downlink, the first base station detects the characteristic signal at the resource location. If the characteristic signal can be detected normally, it indicates that the second base station that transmitted the characteristic signal at that moment is the scrambling base station. It should be noted that in order to ensure the alignment of the start position of the radio frame, the first and second base stations need to perform synchronous detection during the characteristic signal transmission and reception detection process. For example, synchronous detection can be achieved based on the characteristic signal or downlink primary and secondary synchronization information.

[0061] The cross-interference localization method provided in this disclosure involves a coordinating device sending a notification carrying a resource location-based feature signal to each second base station (suspected interfering base station) according to a pre-configured transmission order and period of feature signals. This enables each second base station to generate a feature signal and transmit it downlink through its respective port at that resource location. Simultaneously, a feature signal detection notification carrying a resource location is sent to a first base station (suspected affected base station), enabling the first base station to detect the feature signal at that resource location. If the first base station receives the feature signal transmitted by the second base station uplink at that resource location, it can determine that the second base station is the interfering base station, thereby achieving cross-interference localization. This disclosure is based on coordination between suspected interfering base stations and suspected affected base stations, achieving adaptive cross-interference localization through air interface feature signal measurement. It offers high flexibility, ease of implementation, and high interference localization accuracy, minimizing losses on the interfering side while mitigating interference on the affected side.

[0062] In some embodiments, such as Figure 5 As shown, after determining that the second base station is the interfering base station of the first base station (i.e., step 13), the cross-interference localization method may further include the following steps:

[0063] Step 14: Perform channel estimation on the characteristic signal to obtain channel characteristic parameters.

[0064] Step 15: Send the channel characteristic parameters and the resource location of the scrambling base station to the coordination device so that the coordination device can determine the scrambling base station based on the resource location, transmission order and transmission period, and send the channel parameters to the scrambling base station.

[0065] In this step, the first base station sends the channel characteristic parameters corresponding to the received characteristic signal to the coordination device through the inter-station system interface (which can be Xn, X2, or Xc port), and the coordination device forwards it to the scrambling base station (which is determined in step 13 and is one of the second base stations), so that the scrambling base station can further suppress cross-interference according to the channel characteristic parameters.

[0066] In some embodiments, when there are multiple second base stations, the step of determining the second base station as the interfering base station of the first base station in response to receiving a characteristic signal transmitted by the second base station in the uplink at the resource location (i.e., step 13) includes the following steps: In response to receiving characteristic signals transmitted by multiple second base stations, determining the interfering base station of the first base station from among the second base stations based on the signal power Ps of each characteristic signal. In this step, the first base station selects the characteristic signal with the largest signal power Ps and determines that the second base station that transmitted the characteristic signal is the interfering base station of the first base station (the second base station has the greatest cross-interference with the first base station).

[0067] In some embodiments, after determining that the second base station is the interfering base station of the first base station (i.e., step 13), the cross-interference localization method further includes the following step: sending the signal power Ps to the coordinating device, so that the coordinating device can send the signal power Ps to the interfering base station. When there are multiple first base stations, it is necessary to determine which interfering base station to target for cross-interference suppression. Accordingly, the interfering base station (one of the first base stations) needs to be determined based on the signal power Ps. Therefore, the first base station sends the signal power Ps of the received characteristic signal to the interfering base station through the coordinating device, and the interfering base station filters and determines the interfering base station.

[0068] In some embodiments, receiving a feature signal transmitted by a second base station in the uplink at a resource location includes: receiving a feature signal transmitted by a second base station in the uplink at a resource location, and the signal power Ps of the feature signal is greater than a first threshold; or, receiving a feature signal transmitted by a second base station in the uplink at a resource location, and the signal-to-noise ratio SINR of the feature signal is greater than a second threshold.

[0069] In some embodiments, each port of the second base station corresponds one-to-one with each antenna of the second base station. For example, the second base station includes p ports, where p is the number of antennas of the second base station, and each of the p ports of the second base station corresponds one-to-one with each of the p antennas of the second base station.

[0070] In some embodiments, the number of ports of the second base station is equal to the number of antennas of the second base station plus 1. The second base station includes a first port and a second port. Each first port corresponds one-to-one with each antenna of the second base station, and the second port corresponds to multiple antennas in the second base station. That is, the second port is used for multiplexing some antennas. The antennas used for multiplexing can be fixed antennas that are not turned off.

[0071] In the case where a second port is set up at the second base station, in order to simplify the complexity of cross-interference localization, before detecting the feature signal at the resource location (i.e., step 12), the cross-interference localization method further includes the following steps: making a confidence decision on the second port; in response to the confidence decision being passed, detecting the feature signal at the resource location; in response to the confidence decision not being passed, considering that no feature signal has been detected at present, and no further detection of feature signal at that resource location will be performed.

[0072] To improve reliability, ensure the effectiveness of feature signal detection, and extend the detection cycle, the second base station can transmit feature signals at least twice at different time-domain resource locations for the same port. However, to simplify the complexity of cross-interference localization and improve the speed of interference localization, the first base station only detects one of the transmitted feature signals; if the first base station detects a feature signal even once, it is considered to have detected it.

[0073] Accordingly, in some embodiments, the resource location includes a first resource location and a second resource location, wherein the temporal resource location in the first resource location precedes the temporal resource location in the second resource location, and the detection of the feature signal at the resource location includes: detecting the feature signal at the second resource location.

[0074] This disclosure also provides a method for locating cross-interference, wherein the method is applied to a second base station, which is a suspected interfering base station. Figure 6 As shown, the cross-interference localization method includes:

[0075] Step 21: Receive the feature signal transmission notification sent by the cooperating device and obtain the resource location carried therein.

[0076] Specifically, the feature signal transmission notification is sent by the coordinating device to each second base station according to the transmission order and transmission period. The resource location, transmission order, and transmission period are pre-configured by the coordinating device for each second base station. The resource location includes time-domain resource location and / or frequency-domain resource location, wherein the time-domain resource location can be the time slot location of the radio frame.

[0077] Step 22: Generate feature signals.

[0078] It should be noted that the characteristic signals generated by different ports of the second base station are different.

[0079] The feature signal is a signal sequence of a certain length, which is determined by the total number of Resource Blocks (RBs) and the minimum granularity of the feature signal (the number of RBs). In some embodiments, the feature signal can be defined as:

[0080]

[0081] Where c is a pseudo-random sequence, C init =2 10 (l+1), C init Let c be the initial value, l be the sign index of the characteristic signal, starting from 0; and m be the index of the frequency domain sequence RE (Resource Element) of the characteristic signal, starting from 0.

[0082] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2

[0083] Among them, M PN Let c(n) be the length of the sequence, where n = 0, 1, ..., M. PN -1; N C =1600. x1(n) is initialized to x1(0)=1, x1(n)=0, n=1,2,...,30. x2(n) is initialized to

[0084] Step 23: Send characteristic signals downlink to the first base station through each port of the second base station at the resource location.

[0085] Among them, the first base station is the suspected disturbed base station corresponding to the second base station.

[0086] The cross-interference localization method provided in this disclosure involves a coordinating device sending a notification carrying a resource location-based feature signal to each second base station (suspected interfering base station) according to a pre-configured transmission order and period of feature signals. This enables each second base station to generate a feature signal and transmit it downlink through its respective port at that resource location. Simultaneously, a feature signal detection notification carrying a resource location is sent to a first base station (suspected affected base station), enabling the first base station to detect the feature signal at that resource location. If the first base station receives the feature signal transmitted by the second base station uplink at that resource location, it can determine that the second base station is the interfering base station, thereby achieving cross-interference localization. This disclosure is based on coordination between suspected interfering base stations and suspected affected base stations, achieving adaptive cross-interference localization through air interface feature signal measurement. It offers high flexibility, ease of implementation, and high interference localization accuracy, minimizing losses on the interfering side while mitigating interference on the affected side.

[0087] In some embodiments, such as Figure 7 As shown, after sending a characteristic signal downlink from the resource location to the first base station (i.e., step 23), the cross-interference localization method may further include the following steps:

[0088] Step 24: In response to receiving the channel characteristic parameters sent by the coordinating device, the weights of the service terminal beams of the interfering cell of the second base station are corrected according to the channel characteristic parameters to generate beam null weights.

[0089] In this step, the second base station jointly generates beam null weights based on the service UE (User Equipment) beam of the interfering cell and the channel characteristic parameters fed back by the interfering base station.

[0090] Step 25: Perform downlink joint beam nulling based on beam nulling weights.

[0091] Steps 24-25 can achieve cross-interference suppression, reducing the loss of the interfering base station while suppressing the uplink interference of the affected base station to the greatest extent.

[0092] In cases where multiple base stations are affected, the interfering base station needs to identify one affected base station (the one with the most severe cross-interference among the first base stations) and perform interference suppression on that affected base station. Correspondingly, such as... Figure 8 As shown, after sending a characteristic signal downlink from the resource location to the first base station (i.e., step 23), the cross-interference localization method may further include the following steps:

[0093] Step 31: Receive the signal power Ps sent by the cooperating device. The signal power Ps is the signal power of the characteristic signal received by the first base station.

[0094] After receiving the characteristic signal, the first base station detects the signal power Ps of the characteristic signal and sends the signal power Ps to the scrambling base station (one of the second base stations) through the coordination device.

[0095] Step 32: In response to the signal power Ps being at least two, the disturbed base station is determined based on the signal power Ps, and the disturbed base station is one of the first base stations.

[0096] When there are multiple suspected disturbed base stations (i.e., first base stations), each first base station sends the signal power Ps of its received characteristic signal to the disturbing base station through a coordination device. The disturbing base station selects the first base station with the largest signal power from among the signal powers Ps, and the first base station with the largest signal power is the disturbed base station.

[0097] After identifying the disturbed base station, the corresponding step 24, which involves correcting the weights of the service terminal beams of the disturbing cell of the second base station based on the channel feature parameters received from the coordinating device to generate beam null weights, includes the following steps: responding to at least two channel feature parameters received from the coordinating device, determining the channel feature parameters used for interference suppression, wherein the channel feature parameters used for interference suppression are the channel feature parameters sent by the disturbed base station through the coordinating device; and correcting the weights of the service terminal beams of the disturbing cell of the second base station based on the channel feature parameters used for interference suppression to generate beam null weights. In other words, the disturbing base station selects the channel parameters fed back by the disturbed base station (i.e., the channel parameters used for interference suppression) from the multiple received channel feature parameters and performs interference suppression based on the selected channel parameters.

[0098] In some embodiments, such as Figure 9 As shown, the step of transmitting characteristic signals downlink from each port of the second base station to the first base station at the resource location (i.e., step 23) includes the following steps:

[0099] Step 231: Determine the time domain and frequency domain corresponding to each port of the second base station according to the pre-set mapping relationship.

[0100] Step 232: Through each port of the second base station, characteristic signals are sent downlink to the first base station at the resource location according to the corresponding time domain and frequency domain.

[0101] To improve reliability, ensure the effectiveness of feature signal detection, and extend the detection period, on the second base station side, for the same port, the second base station can transmit feature signals at least twice at different time-domain resource locations. Therefore, in some embodiments, the resource location includes a first resource location and a second resource location. Accordingly, transmitting feature signals downlink to the first base station at the resource location (i.e., step 232) includes: transmitting feature signals downlink to the first base station at the first resource location and the second resource location, respectively.

[0102] In some embodiments, the number of ports of the second base station is the same as the number of antennas of the second base station, and each port of the second base station corresponds one-to-one with each antenna of the second base station.

[0103] In some embodiments, the number of ports of the second base station is equal to the number of antennas of the second base station plus 1. The second base station includes a first port and a second port. Each first port corresponds one-to-one with each antenna of the second base station, and each second port corresponds to multiple antennas in the second base station. That is, the second port multiplexes certain antennas, and the antennas used for multiplexing can be fixed antennas that are not turned off. For example, the second base station has 64 antennas and 65 ports, where 64 first ports (p0-p63) correspond one-to-one with each of the 64 antennas, and the remaining second port (p64) can correspond to multiple antennas.

[0104] In some embodiments, the mapping relationship includes a first mapping relationship or a second mapping relationship. The first mapping relationship is the mapping relationship between each port of the second base station, the time domain, and the frequency domain. The second mapping relationship is the mapping relationship between each port of the second base station, the CDM (Code Division Multiplexing) group, the time domain, and the frequency domain. The CDM group can multiplex the time domain resources of the channel as well as the frequency domain resources of the channel. By introducing the CDM group, the number of REs occupied for transmitting characteristic signals can be reduced.

[0105] In some embodiments, the feature signal includes a PN (Pseudo-Noise Code) sequence or a CZ (Zadoff-Chu) sequence. It should be noted that the feature signal can also be other signal sequences.

[0106] This disclosure also provides a cross-interference localization method, which is applied to a cooperative device. The cooperative device is configured with a first base station and multiple second base stations, and resource locations, transmission sequences, and transmission periods for characteristic signals of each second base station. The resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations. The first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station. Figure 10 As shown, the cross-interference localization method includes the following steps:

[0107] Step 41: According to the transmission order and transmission period, send a feature signal transmission notification carrying the resource location to each second base station. The feature signal transmission notification is used to instruct each second base station to generate a feature signal and transmit the feature signal downlink through each port of the second base station at the resource location.

[0108] Step 42: Send a feature signal detection notification carrying the resource location to the first base station. The feature signal detection notification is used to instruct the first base station to detect feature signals at the resource location.

[0109] The cross-interference localization method provided in this disclosure involves a coordinating device sending a notification carrying a resource location-based feature signal to each second base station (suspected interfering base station) according to a pre-configured transmission order and period of feature signals. This enables each second base station to generate a feature signal and transmit it downlink through its respective port at that resource location. Simultaneously, a feature signal detection notification carrying a resource location is sent to a first base station (suspected affected base station), enabling the first base station to detect the feature signal at that resource location. If the first base station receives the feature signal transmitted by the second base station uplink at that resource location, it can determine that the second base station is the interfering base station, thereby achieving cross-interference localization. This disclosure is based on coordination between suspected interfering base stations and suspected affected base stations, achieving adaptive cross-interference localization through air interface feature signal measurement. It offers high flexibility, ease of implementation, and high interference localization accuracy, minimizing losses on the interfering side while mitigating interference on the affected side.

[0110] In some real-time examples, such as Figure 11 As shown, after sending a feature signal detection notification carrying the resource location to the first base station (i.e., step 42), the cross-interference localization method may further include the following steps:

[0111] Step 43: In response to receiving the channel characteristic parameters and resource location sent by the first base station, determine the harassing base station according to the resource location, transmission order and transmission period, and send the channel parameters to the harassing base station.

[0112] Since the coordinating device has pre-configured the resource location, transmission order, and transmission period, in this step, the coordinating device can determine the second base station corresponding to the resource location. This second base station is the scrambling base station. The received channel parameters are sent to the scrambling base station so that the scrambling base station can perform cross-interference suppression.

[0113] To clearly illustrate the technical solutions of the embodiments of this disclosure, three specific examples are provided below. All three specific examples are illustrated with... Figure 1 Taking the example of macro base station downlink signal interfering with micro base station uplink signal, the macro base station is the second base station, and the micro base station is the first base station.

[0114] Example 1

[0115] The coordinating device assigns unified numbers to macro stations starting from 0. Let the total number of macro stations be X, then x∈{0,...,X-1}. The coordinating device sets a timer. When the timer expires, the coordinating device sends a notification using a characteristic signal. Through port Xn, the corresponding macro stations are periodically notified to send the characteristic signal through the multi-port in slot7 according to their numbering order.

[0116] The feature signal uses a PN sequence, and the time-domain resource position (symbol position) of the feature signal can be one of the last few symbols in slot 7, thus minimizing resource loss.

[0117] The frequency domain of the characteristic signal can be mapped using full bandwidth or partial bandwidth.

[0118] Assuming the macro station has 64 antennas, characteristic signals are transmitted through the 64 ports of the macro station.

[0119] The characteristic signal frequency domain adopts a full-bandwidth mapping method, with 2RB3 symbols as the smallest granularity, assuming a total number of RBs of N. RB The frequency domain RB mapping satisfies the following relationship:

[0120]

[0121] Each of the 64 antennas corresponds to one of the 64 ports. The mapping relationship between the various ports (p0-p63) of the macro base station in the time domain and frequency domain is as follows: Figure 12 As shown, Figure 12 One RB consists of 12 consecutive subcarriers RE (RE0-RE11), each RE corresponding to a port.

[0122] The coordinating device uses a feature signal detection notification to instruct the micro station to detect feature signals in slot 7. If a feature signal is received from a macro station, the micro station obtains the signal power Ps of the feature signal and calculates the channel feature parameters. It then sends the channel feature parameters and slot 7 to the coordinating device. Based on the time-domain location of the feature signal detected by the micro station (i.e., slot 7) and the order of the macro stations' numbers, the coordinating device can determine which macro station is interfering with the micro station. It then feeds back the channel feature parameters of the feature signal detected by the micro station to the corresponding macro station via the Xn interface. The macro station combines the service UE beam of its cell with the channel feature parameters fed back by the micro station to perform downlink beam nulling, suppressing the interference of the macro station's downlink signal on the micro station's uplink signal.

[0123] Example 2

[0124] The coordinating device assigns unified numbers to macro stations starting from 1. Let the total number of macro stations be X, then x∈{1,...,X}. The coordinating device sets a timer. When the timer expires, the coordinating device sends a notification using a characteristic signal. Through port Xc, the corresponding macro stations are periodically notified to send the characteristic signal through multiple ports in slots 7 and 27 according to their numbering order.

[0125] The feature signal uses a PN sequence, and the time-domain resource position (symbol position) of the feature signal can be the last few symbols in slot 7 and slot 27, so as to minimize resource loss.

[0126] The characteristic signal frequency domain adopts a full-bandwidth mapping method, with 2RB3 symbols as the smallest granularity, and the total number of RBs is N. RB The frequency domain RB mapping satisfies the following relationship:

[0127]

[0128] Assuming the macro base station has 64 antennas, it includes 64 first ports (p0-p63), with each of the 64 antennas corresponding one-to-one to the first port. For large-scale timing advance (TA) estimation, a 65th port (p64) is also designed. The signal at port p64 is transmitted by some of the 64 antennas, such as antennas that are fixed and never shut down. Furthermore, the power of each RE corresponding to p64 is equal to the power of each RE corresponding to the other ports. The mapping relationship between the 65 ports of the 64-antenna macro base station and the time and frequency domains is as follows: Figure 13 As shown, Figure 13 One RB consists of 12 consecutive subcarriers RE (RE0-RE11), each RE corresponding to a port, as shown in Example 2. Figure 13 The mapping relationship shown is consistent with Example 1. Figure 12 The difference in the mapping relationship shown is that in Example 2, the p64 port of the macro station is multiplexed for some antennas, while in Example 1, the ports of the macro station are not multiplexed for antennas.

[0129] The temporal mapping of the feature signal employs a method of transmitting it twice at the corresponding temporal symbol positions in different radio frames. This temporal transmission method differs from the ordinary OFDM symbol CP (Cyclic Prefix) method and requires reference to the RIM-RS method defined in TS38.211 for transmitting two consecutive symbols. Using this temporal transmission method ensures that the microstation receives at least one complete feature symbol, avoiding the phenomenon where the coordinating device cannot obtain the precise symbol start position of the feature signal received by the microstation, leading to microstation detection failure.

[0130] The microstation selects the characteristic signal transmitted in the second pass for each symbol for detection. That is, assuming the six time-domain symbols of the characteristic signal transmitted by the macrostation are [Sym0'Sym0 Sym1'Sym1 Sym2'Sym2], where Sym0', Sym1', and Sym2' are the symbol positions carrying the characteristic signal in slot 7, and Sym0, Sym1, and Sym2 are the symbol positions carrying the characteristic signal in slot 27, then the microstation selects Sym0, Sym1, and Sym2 from slot 27, which is the second pass of the characteristic signal, for detection. To simplify complexity and improve interference localization response speed, if the microstation detects the characteristic signal in either of the two transmissions of the characteristic signal from slots 7 and 27 by the macrostation, it can be considered that the characteristic signal has been detected.

[0131] To simplify complexity, the micro-station can first use p64 for confidence determination. If the confidence level is high, it is considered that the characteristic signal has been detected, and then the other first ports (p0-p63) are checked to see if the characteristic signal is received. If the confidence level is low, it is considered that no characteristic signal has been detected, and the other first ports (p0-p63) are no longer checked. The micro-station obtains the signal power Ps, signal-to-noise ratio (SINR), and channel characteristic parameters of the characteristic signal. If the SINR is greater than a certain threshold, the confidence level is considered high, i.e., the characteristic signal has been detected; otherwise, the confidence level is considered low, i.e., the characteristic signal has not been detected.

[0132] The coordinating device can determine which macro station is interfering with the micro station based on the time-domain location of the characteristic signal detected by the micro station and the numbering rules of the macro station. It then feeds back the signal power Ps and channel characteristic parameters of the characteristic signal detected by the micro station to the corresponding macro station via the Xc port. In the case of multiple suspected interfered micro stations, the macro station sorts the signal power Ps fed back by the multiple micro stations, selecting the micro station with the larger signal power Ps as the interfered micro station. It then performs downlink beam nulling based on the service UE beam of the cell and the channel characteristic parameters fed back by the interfered micro station to suppress the interference of the macro station's downlink signal on the uplink signal of the interfered micro station.

[0133] Example 3

[0134] The difference between Example 3 and Example 1 is that the frequency domain resource mapping of the feature signal adopts a method with a minimum granularity of 3RB*2 symbols.

[0135] The characteristic signals are mapped using a full bandwidth method, grouped into sets of 3 RBs, assuming a total of N RBs. RB The frequency domain RB mapping satisfies the following relationship:

[0136]

[0137] The 64 ports (p0-p63) within the 3RB are mapped in CDM (Code Division Multiplexing) groups, with each CDM group corresponding to 2 REs in the frequency domain and 2 symbols in the time domain.

[0138] Each CDM group maps to 4 ports, namely CDM4-FD2-TD2. The correspondence between the frequency domain OCC (Orthogonal Cover Code) and time domain OCC indices is shown in Table 1.

[0139] Table 1

[0140]

[0141] For port p, the corresponding CDM group index is: The corresponding OCC index within the CDM group is OCC_ind = pmod4.

[0142] The mapping relationships between the ports of a macro station within a CDM group, the CDM group, and the time and frequency domains are as follows: Figure 14 As shown, Figure 14 One column represents one symbol. A CDM group consists of three RBs. One RB consists of 12 consecutive subcarriers RE (RE0-RE11) and two symbols. Each RE corresponds to a port.

[0143] The process of locating and suppressing cross-interference in Example 3 is the same as in Example 1, and will not be repeated here.

[0144] This disclosure can be applied to scenarios with coexisting different frame structures, as well as scenarios with out-of-synchronization sites or frame header offsets. Coexistence of different frame structures at the same frequency inevitably requires co-frequency networking, leading to strong cross-slot interference in mixed frame structure scenarios. Interference source localization and automatic interference avoidance measures are necessary. Frame header offset scenarios, due to inter-system coexistence and carrier aggregation, result in different frame offset requirements for different frequency bands, leading to inconsistencies in frame header advance regions and thus cross-interference. The cross-interference localization and suppression scheme of this disclosure can solve the cross-interference problem in the above scenarios.

[0145] This disclosed embodiment can accurately and automatically locate interference sources and adaptively coordinate to trigger beam-level null avoidance on the interference source side, maximizing the reduction of interference from the interference source to the affected side, thereby improving the network performance of the affected side. Compared with other interference mitigation and avoidance technologies, the overall solution adopts an adaptive strategy, which is highly flexible, easy to implement, has high interference location accuracy, and stable interference suppression effect. It can minimize the loss to the interfering side while mitigating the interference on the affected side, thereby maximizing the overall benefits.

[0146] Based on the same technical concept, this disclosure also provides a base station, wherein the base station is a first base station, and the first base station is a suspected interfered base station, such as... Figure 15 As shown, the base station includes a first receiving module 101, a detection module 102, and an interference location module 103. The first receiving module 101 is used to receive a feature signal detection notification sent by the cooperating device and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location.

[0147] The detection module 102 is used to detect feature signals at the resource location.

[0148] The interference location module 103 is used to determine, in response to receiving a characteristic signal sent by the second base station uplink at the resource location, that the second base station is the interfering base station of the first base station.

[0149] The characteristic signal is generated by the second base station after receiving the characteristic signal transmission notification sent by the coordinating device and transmitted downlink through each port of the second base station at the resource location. The characteristic signal transmission notification carries the resource location and is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order and the transmission period are pre-configured by the coordinating device for each of the second base stations. The second base station is a suspected harassing base station corresponding to the first base station.

[0150] In some embodiments, such as Figure 16 As shown, the base station further includes a first processing module 104 and a first transmitting module 105. The first processing module 104 is used to perform channel estimation on the feature signal to obtain channel feature parameters after the interference location module 103 determines that the second base station is the interfering base station of the first base station.

[0151] The first transmitting module 105 is used to transmit the channel characteristic parameters and the resource location of the scrambling base station to the coordinating device, so that the coordinating device can determine the scrambling base station according to the resource location, the transmitting order and the transmitting period, and transmit the channel parameters to the scrambling base station.

[0152] In some embodiments, the interference location module 103 is configured to, in response to receiving feature signals sent by a plurality of second base stations, determine the interfering base station of the first base station from the second base stations based on the signal power of each feature signal.

[0153] In some embodiments, the first transmitting module 105 is further configured to transmit the signal power to the coordinating device, so that the coordinating device can transmit the signal power to the scrambling base station.

[0154] In some embodiments, the detection module 102 is configured to determine that a feature signal sent by a second base station is received uplink at the resource location when the feature signal is received uplink at the resource location and the signal power of the feature signal is greater than a first threshold; or, when a feature signal sent by a second base station is received uplink at the resource location and the signal-to-noise ratio of the feature signal is greater than a second threshold.

[0155] In some embodiments, the number of ports of the second base station is equal to the number of antennas of the second base station plus 1, wherein the second base station includes a first port and a second port, each of the first ports corresponds one-to-one with each of the antennas of the second base station, and the second port corresponds to multiple antennas in the second base station.

[0156] like Figure 17As shown, the base station further includes a second processing module 106, which is configured to perform a confidence determination on the second port before detecting the feature signal at the resource location; if the confidence determination passes, detect the feature signal at the resource location; if the confidence determination fails, stop detecting the feature signal at the resource location.

[0157] In some embodiments, the resource location includes a first resource location and a second resource location, wherein the time-domain resource location in the first resource location precedes the time-domain resource location in the second resource location, and the detection module 102 is used to detect a feature signal at the second resource location.

[0158] Based on the same technical concept, this disclosure also provides a base station, wherein the base station is a second base station, and the second base station is a suspected interference base station, such as... Figure 18 As shown, the system includes a second receiving module 201, a first generating module 202, and a second sending module 203. The second receiving module 201 is used to receive a feature signal transmission notification sent by the coordinating device and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The feature signal transmission notification is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations.

[0159] The first generation module 202 is used to generate feature signals.

[0160] The second transmitting module 203 is used to transmit the characteristic signal downlink from the second base station to the first base station at the resource location through each port of the second base station, wherein the first base station is a suspected disturbed base station corresponding to the second base station.

[0161] In some embodiments, such as Figure 19 As shown, the base station further includes a second generation module 204 and an interference suppression module 205. The second generation module 204 is used to, in response to receiving the channel feature parameters sent by the coordinating device, correct the weight of the service terminal beam of the interfering cell of the second base station according to the channel feature parameters, and generate beam null weights.

[0162] The interference suppression module 205 is used to perform downlink joint beam nulling based on the beam nulling weights.

[0163] In some embodiments, such as Figure 20 As shown, the base station further includes a screening module 206, and the second receiving module 201 is further configured to receive the signal power sent by the cooperating device, wherein the signal power is the signal power of the characteristic signal received by the first base station.

[0164] The filtering module 206 is used to determine, in response to the signal power being at least two, a disturbed base station based on the signal power, wherein the disturbed base station is one of the first base stations.

[0165] The second generation module 204 is configured to, in response to receiving at least two channel feature parameters sent by the coordinating device, determine channel feature parameters for suppressing interference from them, wherein the channel feature parameters for suppressing interference are channel feature parameters sent by the disturbed base station through the coordinating device; and modify the weights of the service terminal beams of the disturbing cell of the second base station according to the channel feature parameters for suppressing interference to generate beam null weights.

[0166] In some embodiments, the second transmitting module 203 is configured to determine the time domain and frequency domain corresponding to each port of the second base station according to a pre-set mapping relationship; and transmit the feature signal downlink to the first base station at the resource location through each port of the second base station according to the corresponding time domain and frequency domain.

[0167] In some embodiments, the resource location includes a first resource location and a second resource location, and the second transmission module 203 is used to transmit the feature signal downlink to the first base station at the first resource location and the second resource location, respectively.

[0168] In some embodiments, the number of ports of the second base station is the same as the number of antennas of the second base station, and each port of the second base station corresponds one-to-one with each antenna of the second base station; or, the number of ports of the second base station is equal to the number of antennas of the second base station plus 1, wherein the second base station includes a first port and a second port, each first port corresponds one-to-one with each antenna of the second base station, and the second port corresponds to multiple antennas in the second base station.

[0169] In some embodiments, the mapping relationship includes a first mapping relationship or a second mapping relationship. The first mapping relationship is the mapping relationship between each port, time domain and frequency domain of the second base station, and the second mapping relationship is the mapping relationship between each port, CDM group, time domain and frequency domain of the second base station.

[0170] In some embodiments, the feature signal includes a PN sequence or a CZ sequence.

[0171] Based on the same technical concept, this disclosure also provides a cooperative device, which includes a first base station and multiple second base stations, as well as resource locations, transmission sequences, and transmission periods for characteristic signals of each second base station. The resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations. The first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station. Figure 21 As shown, the coordination device includes a first notification module 301 and a second notification module 302. The first notification module 301 is used to send a feature signal transmission notification carrying the resource location to each of the second base stations according to the transmission order and the transmission period. The feature signal transmission notification is used to instruct each of the second base stations to generate a feature signal and transmit the feature signal downlink at the resource location through each port of the second base station.

[0172] The second notification module 302 is used to send a feature signal detection notification carrying the resource location to the first base station, wherein the feature signal detection notification is used to instruct the first base station to detect the feature signal at the resource location.

[0173] In some embodiments, such as Figure 22 As shown, the coordination device further includes a processing module 303, which is used to determine the harassing base station based on the resource location, the transmission order and the transmission period in response to receiving the channel feature parameters and resource location sent by the first base station, and to send the channel parameters to the harassing base station.

[0174] This disclosure also provides a computer device, which includes one or more processors and a storage device; wherein the storage device stores one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the cross-interference localization method provided in the foregoing embodiments.

[0175] This disclosure also provides a computer-readable medium having a computer program stored thereon, wherein the computer program, when executed, implements the cross-interference localization method as provided in the foregoing embodiments.

[0176] It will be understood by those skilled in the art that all or some of the steps in the methods disclosed above, and the functional modules / units in the apparatus, can be implemented as software, firmware, hardware, and suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0177] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with the featured embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A method for locating cross-interference, applied to a first base station, wherein the first base station is a suspected interfered base station, characterized in that, The method includes: Receive a feature signal detection notification sent by a cooperative device, and obtain the resource location carried therein, wherein the resource location includes at least one of the following: time-domain resource location and frequency-domain resource location; Detecting a feature signal at the resource location, and in response to receiving a feature signal sent by a second base station uplink at the resource location, determining that the second base station is the scrambling base station of the first base station; The characteristic signal is generated by the second base station after receiving the characteristic signal transmission notification sent by the coordinating device and transmitted downlink through each port of the second base station at the resource location. The characteristic signal transmission notification carries the resource location and is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations. The second base station is a suspected harassing base station corresponding to the first base station. Channel estimation is performed on the characteristic signal to obtain channel characteristic parameters; The channel characteristic parameters and the resource location of the scrambling base station are sent to the coordinating device, so that the coordinating device can determine the scrambling base station based on the resource location, the transmission order and the transmission period, and send the channel characteristic parameters to the scrambling base station; the channel characteristic parameters are used to generate beam null weights, and the beam null weights are used to perform downlink joint beam nulling.

2. The method as described in claim 1, characterized in that, The second base station may be multiple, and the step of determining that the second base station is the scrambling base station of the first base station in response to receiving a characteristic signal transmitted by the second base station uplink at the resource location includes: In response to receiving characteristic signals transmitted by a plurality of second base stations, the scrambling base station of the first base station is determined from the second base stations based on the signal power of each characteristic signal.

3. The method as described in claim 2, characterized in that, After determining that the second base station is the harassing base station of the first base station, the method further includes: The signal power is transmitted to the coordinating device, so that the coordinating device can transmit the signal power to the scrambling base station.

4. The method as described in claim 1, characterized in that, The uplink reception of the characteristic signal sent by the second base station at the resource location includes: The characteristic signal transmitted by the second base station is received uplink at the resource location, and the signal power of the characteristic signal is greater than a first threshold; or, The uplink receives a characteristic signal sent by the second base station at the resource location, and the signal-to-noise ratio of the characteristic signal is greater than a second threshold.

5. The method as described in claim 1, characterized in that, The number of ports of the second base station is equal to the number of antennas of the second base station plus 1. The second base station includes a first port and a second port. Each first port corresponds one-to-one with each antenna of the second base station, and each second port corresponds to multiple antennas in the second base station. Before detecting the resource location feature signal, the method further includes: A confidence level decision is made for the second port. If the confidence level decision passes, a feature signal is detected at the resource location. If the confidence level decision fails, the feature signal is no longer detected at the resource location.

6. The method as described in claim 1, characterized in that, The resource location includes a first resource location and a second resource location, wherein the time-domain resource location in the first resource location precedes the time-domain resource location in the second resource location, and the detection of the feature signal at the resource location includes: detecting the feature signal at the second resource location.

7. A method for locating cross-interference, applied to a second base station, wherein the second base station is a suspected interfering base station, characterized in that, The method includes: The system receives a feature signal transmission notification sent by a coordinating device and obtains the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The feature signal transmission notification is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations. A characteristic signal is generated and transmitted downlink from the second base station to the first base station at the resource location through each port of the second base station, wherein the first base station is a suspected disturbed base station corresponding to the second base station; In response to receiving the channel feature parameters sent by the coordinating device, the weights of the service terminal beams of the interfering cell of the second base station are corrected according to the channel feature parameters to generate beam null weights. Downlink joint beam nulling is performed based on the beam nulling weights.

8. The method as described in claim 7, characterized in that, After the characteristic signal is transmitted downlink from the resource location to the first base station, the method further includes: The signal power received by the coordinating device is the signal power of the characteristic signal received by the first base station. In response to the presence of at least two signal powers, a disturbed base station is determined based on the signal power, wherein the disturbed base station is one of the first base stations; The step of responding to receiving channel feature parameters sent by the coordinating device, and correcting the weights of the service terminal beams of the interfering cell of the second base station according to the channel feature parameters to generate beam null weights includes: In response to receiving at least two channel feature parameters sent by the coordinating device, a channel feature parameter for suppressing interference is determined from them, wherein the channel feature parameter for suppressing interference is the channel feature parameter sent by the disturbed base station through the coordinating device; The weights of the service terminal beams of the interfering cell of the second base station are corrected according to the channel characteristic parameters used to suppress interference, and beam null weights are generated.

9. The method as described in claim 7, characterized in that, The step of transmitting the characteristic signal downlink from each port of the second base station to the first base station at the resource location includes: Based on the pre-set mapping relationship, the time domain and frequency domain corresponding to each port of the second base station are determined; Through each port of the second base station, the characteristic signal is transmitted downlink to the first base station at the resource location according to the corresponding time domain and frequency domain.

10. The method as described in claim 9, characterized in that, The resource location includes a first resource location and a second resource location. The step of transmitting the characteristic signal downlink to the first base station at the resource location includes: The characteristic signal is transmitted downlink to the first base station from the first resource location and the second resource location, respectively.

11. The method as described in claim 9, characterized in that, The number of ports of the second base station is the same as the number of antennas of the second base station, and each port of the second base station corresponds one-to-one with each antenna of the second base station; or, The number of ports of the second base station is equal to the number of antennas of the second base station plus 1. The second base station includes a first port and a second port. Each first port corresponds to each antenna of the second base station, and each second port corresponds to multiple antennas in the second base station.

12. The method as described in claim 9, characterized in that, The mapping relationship includes a first mapping relationship or a second mapping relationship. The first mapping relationship is the mapping relationship between each port, time domain and frequency domain of the second base station. The second mapping relationship is the mapping relationship between each port, CDM group, time domain and frequency domain of the second base station.

13. The method according to any one of claims 7-12, characterized in that, The characteristic signal includes a PN sequence or a CZ sequence.

14. A method for locating cross-interference, characterized in that, The method is applied to a collaborative device, which includes a first base station and multiple second base stations, and resource locations, transmission sequences, and transmission periods for characteristic signals of each second base station. The resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations. The first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station. The method includes: According to the transmission order and the transmission period, a feature signal transmission notification carrying the resource location is sent to each of the second base stations. The feature signal transmission notification is used to instruct each of the second base stations to generate a feature signal and transmit the feature signal downlink at the resource location through each port of the second base station. Send a feature signal detection notification carrying the resource location to the first base station, the feature signal detection notification being used to instruct the first base station to detect the feature signal at the resource location; In response to receiving channel feature parameters and resource location sent by the first base station, the scrambling base station is determined according to the resource location, the transmission order and the transmission period, and the channel feature parameters are sent to the scrambling base station. The channel feature parameters are used to generate beam null weights, and the beam null weights are used to perform downlink joint beam nulling.

15. A base station, characterized in that, The base station is a first base station, which is a suspected interfered base station. It includes a first receiving module, a detection module, an interference location module, a first processing module, and a first sending module. The first receiving module is used to receive a feature signal detection notification sent by the cooperating device and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The detection module is used to detect feature signals at the resource location; The interference location module is used to determine, in response to receiving a feature signal sent by a second base station at the resource location, that the second base station is a harassing base station of the first base station; wherein, the feature signal is generated by the second base station after receiving a feature signal transmission notification sent by the coordinating device and transmitted downlink at the resource location through each port of the second base station; the feature signal transmission notification carries the resource location and is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period; the resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations; the second base station is a suspected harassing base station corresponding to the first base station; The first processing module is used to perform channel estimation on the feature signal to obtain channel feature parameters; The first transmitting module is used to transmit the channel feature parameters and the resource location of the scrambling base station to the coordinating device, so that the coordinating device can determine the scrambling base station according to the resource location, the transmitting order and the transmitting period, and transmit the channel feature parameters to the scrambling base station; the channel feature parameters are used to generate beam null weights, and the beam null weights are used to perform downlink joint beam nulling.

16. A base station, characterized in that, The base station is a second base station, which is a suspected interference base station. It includes a second receiving module, a first generating module, a second transmitting module, and an interference suppression module. The second receiving module is used to receive a feature signal transmission notification sent by a coordinating device, and obtain the resource location carried therein. The resource location includes at least one of the following: time-domain resource location and frequency-domain resource location. The feature signal transmission notification is sent by the coordinating device to each of the second base stations according to the transmission order and transmission period. The resource location, the transmission order, and the transmission period are pre-configured by the coordinating device for each of the second base stations. The first generation module is used to generate feature signals; The second transmitting module is used to transmit the characteristic signal downlink to the first base station at the resource location through each port of the second base station, wherein the first base station is a suspected disturbed base station corresponding to the second base station; The second generation module is used to, in response to receiving channel feature parameters sent by the coordinating device, correct the weights of the service terminal beams of the interfering cell of the second base station according to the channel feature parameters, and generate beam null weights. The interference suppression module is used to perform downlink joint beam nulling based on the beam nulling weights.

17. A cooperative device, characterized in that, The coordination device is configured with a first base station and multiple second base stations, as well as resource locations, transmission orders, and transmission periods for characteristic signals of each second base station. The resource locations include at least one of the following: time-domain resource locations and frequency-domain resource locations. The first base station is a suspected interfered base station, and the second base stations are suspected interfering base stations corresponding to the first base station. The coordination device includes a first notification module, a second notification module, and a processing module. The first notification module is used to send a characteristic signal transmission notification carrying the resource location to each second base station according to the transmission order and the transmission period. The characteristic signal transmission notification is used to instruct each second base station to generate a characteristic signal and transmit the characteristic signal downlink through each port of the second base station at the resource location. The second notification module is used to send a feature signal detection notification carrying the resource location to the first base station, wherein the feature signal detection notification is used to instruct the first base station to detect the feature signal at the resource location; The processing module is configured to, in response to receiving channel feature parameters and resource location sent by the first base station, determine the scrambling base station according to the resource location, the transmission order and the transmission period, and send the channel feature parameters to the scrambling base station. The channel feature parameters are used to generate beam null weights, and the beam null weights are used to perform downlink joint beam nulling.

18. A computer device, comprising: One or more processors; A storage device on which one or more programs are stored; When the one or more programs are executed by the one or more processors, the one or more processors implement the cross-interference localization method as described in any one of claims 1-14.

19. A computer-readable medium having a computer program stored thereon, wherein, When the program is executed, it implements the cross-interference localization method as described in any one of claims 1-14.

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