A coordination method, device and equipment for atmospheric waveguide interference

Abstract

The present invention discloses a coordination method, device, and apparatus for atmospheric waveguide interference. When atmospheric waveguide interference occurs, the interference intensity value of the target time slot symbol in the radio frame of the interfered station is obtained; based on the interference intensity value of the target time slot symbol, the number of target time slot symbols that meet a preset strong interference condition is counted to determine a target number; the interfered station is added to a target set; a target number of downlink pilot time slot symbols are reserved in the downlink pilot time slot symbols near the protection time slot symbols in the radio frame of each communication base station in the target set, and the reserved downlink pilot time slot symbols are used to schedule access users whose uplink quality exceeds a preset threshold value, and the unreserved downlink pilot time slot symbols are used to schedule access users whose uplink quality is lower than the preset threshold value. The present invention can avoid the loss of downlink time-frequency resources of the communication base station, reduce the impact of atmospheric waveguide interference, and ensure user experience.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a coordination method, device and equipment for atmospheric waveguide interference. Background Art

[0002] The atmospheric ducting effect occurs in the troposphere. In this layer, the atmosphere is layered due to temperature inversion or the rapid decrease in water vapor with increasing altitude, forming a thin atmospheric layer. Electromagnetic waves transmitted through this layer are confined to this layer. This phenomenon is called atmospheric ducting. 5G network atmospheric ducting interference occurs when the atmospheric ducting effect occurs. The downlink signal from a distant 5G base station, after long-distance transmission, interferes with the uplink signal from a nearby 5G base station. Due to the reversible nature of electromagnetic wave propagation, the interfering station and the victim station in an atmospheric ducting interference scenario act as mutual interference sources, with both their uplinks being interfered with by the downlink signal from the other end.

[0003] In the time slot structure of the TDD (Time Division Duplexing) system, the uplink and downlink time slots are isolated by setting a GP (Guard Period) in a special subframe to avoid mutual interference between the uplink and downlink signals. Under the influence of the atmospheric waveguide effect, the signal of the interfering station is transmitted to the interfered station over a long distance. When the transmission time exceeds the GP time slot, the downlink signal of the interfering station is received in the uplink time slot of the interfered station, and the uplink signal of the interfered station is severely interfered. In order to solve the problem of atmospheric waveguide interference, the current method is: when atmospheric waveguide interference occurs, the GP time slots of the special subframes of the interfered station, the interfering station, and the surrounding 5G base stations are expanded, thereby increasing the propagation protection interval in the time domain and avoiding atmospheric waveguide interference.

[0004] However, the inventors discovered that the existing technology has at least the following problems: expanding the GP time slot will result in the loss of downlink time slots in the radio frame, resulting in a permanent loss of the downlink peak rate of the entire NR TDD (New Radio-Time Division Duplexing) network. In non-lightly loaded conditions, the loss of downlink peak rate is equivalent to reducing bandwidth, which affects user experience. In addition, the interfering station of the atmospheric waveguide interference may be multiple interference sources. Due to the reversibility principle of electromagnetic wave propagation, the interfered station will also become an interference source. All base stations in a large area need to adjust the special subframe configuration, which requires a large workload for maintenance operations. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a method, device and equipment for coordinating atmospheric waveguide interference, which can effectively reduce the impact of atmospheric waveguide interference while avoiding the loss of downlink time and frequency resources of the communication base station and ensure user experience.

[0006] To achieve the above objectives, an embodiment of the present invention provides a coordination method for atmospheric duct interference, comprising:

[0007] When atmospheric duct interference occurs, obtaining an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station subjected to atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe subsequent to the special subframe;

[0008] According to the interference intensity value suffered by the target time slot symbol, counting the number of target time slot symbols that meet the preset strong interference condition to determine the target number;

[0009] adding the disturbed station to a target set;

[0010] A target number of downlink pilot time slot symbols are reserved in the downlink pilot time slot symbols close to the protection time slot symbols in the wireless frame of each communication base station in the target set, and the reserved downlink pilot time slot symbols are used to schedule access users whose uplink quality exceeds a preset threshold value, and the unreserved downlink pilot time slot symbols are used to schedule access users whose uplink quality is lower than the preset threshold value.

[0011] As an improvement to the above solution, the following steps are used to detect whether the communication base station is a disturbed station affected by atmospheric waveguide interference:

[0012] Obtaining an average uplink interference intensity value of the cell of the communication base station, an interference intensity value of the last guard time slot symbol of the special subframe in the radio frame of the communication base station as a first interference intensity value, and an interference intensity value of the last uplink pilot time slot symbol of the last uplink subframe in the radio frame as a second interference intensity value;

[0013] When the uplink interference intensity average value is greater than a preset intensity threshold, and the difference between the first interference intensity value and the second interference intensity value is greater than a preset first difference threshold, the communication base station is determined to be a victim station affected by atmospheric waveguide interference.

[0014] As an improvement to the above solution, the method of counting the number of target time slot symbols that meet a preset strong interference condition based on the interference intensity value of the target time slot symbol to determine the target number includes:

[0015] Determining whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol;

[0016] Counting the number of target time slot symbols that meet the preset strong interference condition as the number of strong interference symbols detected by the interfered station;

[0017] The target number is determined according to the maximum number of strong interference symbols detected by all the interfered stations.

[0018] As an improvement to the above solution, judging whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition according to the interference intensity value received by the target time slot symbol includes:

[0019] Obtaining an average uplink interference intensity of the cell of the interfered station when the interfered station is not interfered with by the atmospheric duct, as a standard interference intensity average of the interfered station;

[0020] Calculating the difference between the interference intensity value of each target time slot symbol and the average value of the standard interference intensity;

[0021] When the difference is greater than a preset second difference threshold, the corresponding target time slot symbol is determined to be a target time slot symbol that meets the preset strong interference condition; wherein the second difference threshold is a positive value.

[0022] As an improvement to the above solution, before reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, the method further includes:

[0023] Obtaining a disturbing station according to the location of the disturbed station; wherein the disturbing station is a communication base station that causes atmospheric waveguide interference to the disturbed station;

[0024] The interfering station is added to the target set.

[0025] As an improvement to the above solution, obtaining the interfering station according to the location of the interfered station includes:

[0026] Based on the 3GPP remote interference management RIM technology, a RIM RS-1 signal is configured for the victim station; wherein the RIM RS-1 signal is configured in the last downlink pilot time slot symbol of the special subframe in the radio frame of the victim station;

[0027] Detecting whether a communication base station has received a RIM RS-1 signal sent by the interfered station;

[0028] The communication base station that receives the RIM RS-1 signal sent by the interfered station is positioned as the interfering station.

[0029] As an improvement to the above solution, the relationship between the uplink quality of the access user and the preset threshold is determined by the following steps:

[0030] Obtaining a PDCCH aggregation level of an access user of the interfered station;

[0031] When the PDCCH aggregation level of the access user is less than or equal to a preset level threshold, determining that the uplink quality of the access user exceeds the preset threshold;

[0032] When the PDCCH aggregation level of the access user is greater than a preset level threshold, it is determined that the uplink quality of the access user is lower than the preset threshold.

[0033] As an improvement to the above solution, after reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, and using the reserved downlink pilot time slot symbols to schedule access users whose uplink quality exceeds a preset threshold value, and using the unreserved downlink pilot time slot symbols to schedule access users whose uplink quality is lower than the preset threshold value, the method further includes:

[0034] Real-time monitoring of the average uplink interference intensity of each cell of the communication base station in the target set;

[0035] When the uplink interference intensity average value does not decrease, the target number is incremented according to a preset adjustment step size to update the reserved downlink pilot time slot symbols.

[0036] An embodiment of the present invention further provides a coordination device for atmospheric waveguide interference, comprising:

[0037] an interference intensity acquisition module, configured to, when atmospheric duct interference occurs, obtain an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station subjected to atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe following the special subframe;

[0038] A target number determination module is used to count the number of target time slot symbols that meet a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol to determine the target number;

[0039] a target set updating module, configured to add the disturbed station to the target set;

[0040] The time slot symbol scheduling module is used to reserve a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the protection time slot symbols in the wireless frame of each communication base station in the target set, and use the reserved downlink pilot time slot symbols to schedule access users whose uplink quality exceeds a preset threshold value, and use the unreserved downlink pilot time slot symbols to schedule access users whose uplink quality is lower than the preset threshold value.

[0041] An embodiment of the present invention also provides a coordination device for atmospheric duct interference, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the coordination method for atmospheric duct interference as described in any one of the above items is implemented.

[0042] Compared with the prior art, the coordination method, device and equipment for atmospheric waveguide interference disclosed in the present invention determine the target number, the atmospheric waveguide propagation distance and the range of atmospheric waveguide interference by counting the number of time slot symbols that are strongly interfered with in the interfered station affected by the atmospheric waveguide; and then, through time domain scheduling of the communication base station affected by the atmospheric waveguide, the access users with good uplink quality are scheduled using the reserved n1 downlink pilot time slot symbols, and the access users with poor uplink quality, that is, the access users that require more power, are scheduled using the downlink time domain outside the reserved n1 downlink pilot time slot symbols. This can more quickly and accurately perform time domain scheduling on the interfering station and the interfered station in the atmospheric waveguide interference scenario, and can effectively reduce the far-end interference of the interfering station on the interfered station. Moreover, the embodiment of the present invention can avoid the method of increasing the GP time slot symbols of the interfering station, the interfered station and all base stations in a large surrounding area under the atmospheric waveguide effect, thereby not losing downlink time and frequency resources, having little impact on the downlink peak rate, and ensuring the user's usage perception. At the same time, the embodiment of the present invention only operates on the communication base stations affected by the atmospheric waveguide interference, with low operating workload, short implementation intervals and strong timeliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 1 is a flow chart of a method for coordinating atmospheric duct interference provided by an embodiment of the present invention;

[0044] Figure 2 1 is a schematic diagram of the principle of subframe configuration of a radio frame of a communication base station in an embodiment of the present invention;

[0045] Figure 3 1 is a schematic diagram of the principle of time slot symbol configuration of a radio frame in an embodiment of the present invention;

[0046] Figure 4 Schematic diagram of atmospheric duct interference principle in an embodiment of the present invention;

[0047] Figure 5Schematic diagram of the time slot symbol configuration of a wireless frame after the guard time slot symbol is expanded in the prior art;

[0048] Figure 6 Schematic diagram of typical time domain characteristics of atmospheric duct interference in an embodiment of the present invention;

[0049] Figure 7 Schematic diagram of the working principle of the RIM technology in an embodiment of the present invention;

[0050] Figure 8 1 is a schematic structural diagram of a coordination device for atmospheric waveguide interference provided by an embodiment of the present invention;

[0051] Figure 9 It is a structural diagram of a coordination device for atmospheric waveguide interference provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0053] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0054] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0055] The embodiment of the present invention is applied to the scenario where the coordinated communication base station is affected by atmospheric waveguide interference. It should be noted that the time slot structure of the TDD system includes uplink subframes and downlink subframes, each including corresponding uplink and downlink pilot time slot symbols, and the uplink and downlink pilot time slot symbols are isolated by setting protection time slot symbols to avoid mutual interference between uplink and downlink signals. As an example, see Figure 2 and Figure 3 , Figure 21 is a schematic diagram showing the principle of subframe configuration of a radio frame of a communication base station in an embodiment of the present invention. Figure 3 This is a schematic diagram of the principle of the time slot symbol configuration of the radio frame in an embodiment of the present invention. A radio frame of a certain NR TDD system includes a total of 10 subframes, wherein the ratio of downlink subframes to uplink subframes is set to DL:UL=8:2, and each subframe includes 14 OFDM (Orthogonal Frequency Division Multiplexing) time slot symbols. The last downlink subframe close to the uplink subframe is set as a special subframe, wherein each uplink subframe includes 14 uplink pilot time slot symbols, and each downlink subframe includes 14 downlink pilot time slot symbols. The configuration of the downlink pilot time slot symbols, the protection time slot symbols and the uplink pilot time slot symbols in the special subframe is: DwPTS:GP:UpPTS=6:4:4.

[0056] See also Figure 4 , is a schematic diagram of the atmospheric duct interference principle in an embodiment of the present invention. Under the influence of the atmospheric duct effect, the signal of the interfering station gNodeB is transmitted over a long distance to the interfered station gNodeB. When the transmission time exceeds the protection time slot, the downlink signal of the interfering station gNodeB is received during the uplink time slot of the interfered station gNodeB. The uplink signal of the interfered station gNodeB is severely interfered, and far-end co-channel interference occurs in the NR TDD network. Therefore, it is necessary to find a method to mitigate the influence of atmospheric duct. See Figure 5 , is a schematic diagram of the time slot symbol configuration of the wireless frame after the protection time slot symbol is expanded in the prior art. In the prior art, when atmospheric waveguide interference occurs, the GP time slots of the special subframes of the interfered station, the interfering station and the surrounding 5G base stations are expanded, and the normal special subframe configuration is DwPTS:GP:UpPTS=6:4:4. After the GP time slot is expanded, the special subframe configuration becomes DwPTS:GP:UpPTS=6:18:4, that is, the GP time slot is expanded from 4 symbols to 18 symbols. The NR TDD wireless frame loses one downlink subframe, that is, it loses 14 downlink pilot time slot symbols. The overall NR TDD network downlink peak rate is permanently lost by 13.46%, which has an adverse impact on user perception under non-light load conditions.

[0057] Therefore, in order to mitigate the impact of atmospheric waveguide interference and avoid the loss of downlink time-frequency resources of the communication base station, the embodiment of the present invention provides a coordination method for atmospheric waveguide interference, see Figure 1 , is a flow chart of a method for coordinating atmospheric duct interference provided by an embodiment of the present invention. The method is specifically performed by following steps S11 to S14:

[0058] S11. When atmospheric duct interference occurs, obtain an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station affected by atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe subsequent to the special subframe;

[0059] S12. Counting the number of target time slot symbols that meet a preset strong interference condition according to the interference intensity value received by the target time slot symbol to determine a target number;

[0060] S13, adding the disturbed station to the target set;

[0061] S14. Reserve a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the protection time slot symbols in the wireless frame of each communication base station in the target set, and use the reserved downlink pilot time slot symbols to schedule access users whose uplink quality exceeds a preset threshold value, and use the unreserved downlink pilot time slot symbols to schedule access users whose uplink quality is lower than the preset threshold value.

[0062] In the embodiment of the present invention, in step S11, when it is detected that a communication base station is interfered with by an atmospheric waveguide, the communication base station is regarded as a disturbed station, and the interference strength values ​​of all guard time slot symbols GP and all uplink pilot time slot symbols UpPTS of the special subframe in the wireless frame of the disturbed station, as well as all uplink pilot time slot symbols UpPTS of the uplink subframe after the special subframe are obtained, so as to obtain the interference strength values ​​of the special waveguide. Figure 1 and Figure 2 Taking the wireless frame shown in FIG. 1 as an example, the interference strength values ​​of the target time slot symbols obtained are expressed as follows:

[0063] The interference intensity of the GP time slot symbol of the special subframe is:

[0064] N.GAP.Symbol01.Pwr;

[0065] N.GAP.Symbol02.Pwr;

[0066] N.GAP.Symbol03.Pwr;

[0067] N.GAP.Symbol04.Pwr;

[0068] Interference intensity of the UpPTS time slot symbol of the special subframe:

[0069] NSSymbol10.NI.Avg (average interference noise value of self-contained time slot symbol 10);

[0070] NSSymbol11.NI.Avg (average interference noise value of self-contained time slot symbol 11);

[0071] NSSymbol12.NI.Avg (average interference noise value of self-contained time slot symbol 12);

[0072] NSSymbol13.NI.Avg (average interference noise value of self-contained time slot symbol 13);

[0073] The interference intensity of each time slot symbol (14 in total) in the first uplink subframe after the special subframe is:

[0074] N.UL.First.Symbol00.Pwr;

[0075] N.UL.First.Symbol01.Pwr;

[0076] N.UL.First.Symbol02.Pwr;

[0077] N.UL.First.Symbol03.Pwr;

[0078] N.UL.First.Symbol04.Pwr;

[0079] N.UL.First.Symbol05.Pwr;

[0080] N.UL.First.Symbol06.Pwr;

[0081] N.UL.First.Symbol07.Pwr;

[0082] N.UL.First.Symbol08.Pwr;

[0083] N.UL.First.Symbol09.Pwr;

[0084] N.UL.First.Symbol10.Pwr;

[0085] N.UL.First.Symbol11.Pwr;

[0086] N.UL.First.Symbol12.Pwr;

[0087] N.UL.First.Symbol13.Pwr.

[0088] Furthermore, in step S12, based on the interference intensity values ​​of all target time slot symbols of the interfered station, it is determined whether the corresponding target time slot symbols meet the preset strong interference condition, and the number of target time slot symbols meeting the preset strong interference condition is counted to determine the target number n1.

[0089] Preferably, step S12, i.e., counting the number of target time slot symbols that meet a preset strong interference condition based on the interference intensity value received by the target time slot symbol to determine the target number, includes:

[0090] S121. Determine, based on the interference intensity value received by the target time slot symbol, whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition;

[0091] S122. Count the number of target time slot symbols that meet the preset strong interference condition as the number of strong interference symbols detected by the interfered station;

[0092] S123: Determine a target number according to a maximum number of strong interference symbols detected by all the interfered stations.

[0093] S124: Based on the interference strength values ​​of all statistical target time slot symbols of the interfered station,

[0094] Specifically, there may be more than one victim station affected by atmospheric waveguide interference. Therefore, the number n0 of strong interference symbols detected by each victim station is included in the set H0, and the maximum value of the set H0 is selected to determine the target number n1 value:

[0095] n1 = Max (the number of strong interfering symbols detected by the victim station n0).

[0096] Furthermore, in step S13, the disturbed station is added to a preset target set H1. Since there may be more than one disturbed station affected by the atmospheric duct interference, the number of disturbed stations in the target set H1 is more than one.

[0097] In step S14, n1 downlink pilot time slot symbols DwPTS are reserved in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set. Later, in the application process, for the communication base stations in the target set, when the communication base stations access a user, the uplink quality of the accessed user is determined. Among them, users with poor uplink quality require more power. Therefore, for access users whose uplink quality exceeds a certain threshold, the n1 downlink pilot time slot symbols reserved close to the guard time slot symbols are used for scheduling. For access users whose uplink quality is lower than a certain threshold, downlink pilot time slot symbols other than the reserved n1 downlink pilot time slot symbols are used for scheduling.

[0098] By adopting the technical means of the embodiments of the present invention, the number of targets, the distance of atmospheric waveguide propagation, and the range of atmospheric waveguide interference are determined by counting the number of time slot symbols that are strongly interfered with in the interfered station affected by the atmospheric waveguide; and then, through time domain scheduling of the communication base station affected by the atmospheric waveguide, access users with good uplink quality are scheduled using the reserved n1 downlink pilot time slot symbols, and access users with poor uplink quality, that is, access users requiring more power, are scheduled using the downlink time domain outside the reserved n1 downlink pilot time slot symbols. This can more quickly and accurately perform time domain scheduling on the interfering station and the interfered station in the atmospheric waveguide interference scenario, and can effectively reduce the far-end interference of the interfering station on the interfered station. Moreover, the embodiment of the present invention can avoid the method of increasing the GP time slot symbols of the interfering station, the interfered station and all base stations in a large surrounding area under the atmospheric waveguide effect, thereby not losing downlink time and frequency resources, having little impact on the downlink peak rate, and ensuring the user's usage perception. At the same time, the embodiment of the present invention only operates on the communication base stations affected by the atmospheric waveguide interference, with low operating workload, short implementation intervals and strong timeliness.

[0099] As a preferred implementation, the embodiment of the present invention is further implemented on the basis of the above embodiment, and detects whether the communication base station is a disturbed station caused by atmospheric waveguide interference through the following steps:

[0100] Obtaining an average uplink interference intensity value of the cell of the communication base station, an interference intensity value of the last guard time slot symbol of the special subframe in the radio frame of the communication base station as a first interference intensity value, and an interference intensity value of the last uplink pilot time slot symbol of the last uplink subframe in the radio frame as a second interference intensity value;

[0101] When the uplink interference intensity average value is greater than a preset intensity threshold, and the difference between the first interference intensity value and the second interference intensity value is greater than a preset first difference threshold, the communication base station is determined to be a victim station affected by atmospheric waveguide interference.

[0102] See also Figure 6 , is a schematic diagram of typical time domain characteristics of atmospheric duct interference in an embodiment of the present invention. The typical characteristics of atmospheric duct interference are that the gNodeB cell receives interference in the uplink, and the interference intensity has a slope characteristic in the time domain. The characteristics of atmospheric duct interference in the time domain are as follows: Figure 6 As shown in the figure, the horizontal axis is the time domain, the starting symbol is the time slot symbol of the special subframe, of which the first 6 symbols are the downlink DwPTS. It can be found that the GP time slot symbol is the most severely interfered, and then the interference intensity decreases with the time slot symbol in the time domain until the 4th symbol of the uplink pilot time slot symbol after the special subframe.

[0103] The statistical characteristics of atmospheric duct interference are as follows:

[0104] 1) The communication base station gNodeB cell is affected by uplink interference: the uplink interference intensity average value N.UL.NI.Avg of the gNodeB cell increases significantly, for example, the N.UL.NI.Avg indicator is greater than the preset intensity threshold;

[0105] 2) The uplink interference suffered by the cell has a slope characteristic: the difference between the first interference strength value N.GAP.LastSymbol.Pwr and the second interference strength value N.UL.Last.Symbol13.Pwr is large, for example, (N.GAP.LastSymbol.Pwr-N.UL.Last.Symbol13.Pwr) is greater than the preset first difference threshold.

[0106] When it is found that communication base stations in a large range are simultaneously subject to strong uplink interference, they are checked according to the statistical indicator characteristics of atmospheric waveguide interference. When it is detected that a communication base station meets the above two characteristics, it is considered to be a disturbed station affected by atmospheric waveguide interference.

[0107] Optionally, the preset intensity threshold is set to -110dBm, and the preset first difference threshold is set to 5dB. Of course, the preset intensity threshold and the preset first difference threshold can also be set according to actual conditions, and do not constitute a specific limitation of the present invention.

[0108] By adopting the technical means of the embodiments of the present invention, it is possible to determine whether a communication base station has received atmospheric waveguide interference based on the indicator characteristics of the atmospheric waveguide interference, thereby improving the detection accuracy of the interfered station.

[0109] As a preferred embodiment, the embodiment of the present invention optimizes the setting of the strong interference condition, and step S121, that is, judging whether the target time slot symbol is a target time slot symbol that meets the preset strong interference condition according to the interference intensity value received by the target time slot symbol, includes:

[0110] S1211. Obtain an average uplink interference intensity of the cell of the victim station when the victim station is not subject to atmospheric duct interference, as a standard interference intensity average of the victim station;

[0111] S1212. Calculate the difference between the interference intensity value received by each target time slot symbol and the standard interference intensity average value;

[0112] S1213. When the difference is greater than a preset second difference threshold, determine that the corresponding target time slot symbol is a target time slot symbol that meets the preset strong interference condition; wherein the second difference threshold is a positive value.

[0113] Specifically, when the communication base station is not affected by the atmospheric duct effect, the uplink interference intensity average value N.UL.NI.Avg of the communication base station cell is calculated, so that the noise floor level intensity N0 of the communication base station cell is equal to N.UL.NI.Avg, which is used as the standard interference intensity average value. When the communication base station is affected by the atmospheric duct effect, the communication base station acts as a disturbed station, obtains the interference intensity values ​​of all target time slot symbols, and subtracts them from the standard interference intensity average value N0 one by one. If the subtraction result is a positive value and exceeds the preset second difference threshold T1, it is considered that the corresponding target time slot symbol has received strong interference, that is, it meets the preset strong interference condition. n0 is taken into account and n0 is reset to n0+1 until all target time slot symbols of the disturbed station are traversed.

[0114] As a preferred embodiment, the embodiment of the present invention is further implemented on the basis of any of the above embodiments. In step S14, that is, before reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, the method further includes steps S15 and S16:

[0115] S15. Obtaining an interfering station according to the location of the disturbed station; wherein the interfering station is a communication base station that causes atmospheric waveguide interference to the disturbed station;

[0116] S16: Add the interfering station to the target set.

[0117] It should be noted that due to the reversibility principle of electromagnetic wave propagation, the interfering station and the interfered station in the atmospheric waveguide interference scenario are sources of interference to each other, and their uplinks are interfered with by the downlink signal of the other end. Therefore, the interfering station also needs to implement corresponding measures to reduce the impact of atmospheric waveguide interference.

[0118] In an embodiment of the present invention, the interfering station causing atmospheric waveguide interference to the interfered station is located based on the relationship between the interfered station and the interfering station, and the interfering station is also added to the target set H1. In a subsequent process, as with the interfered station in the target set, a target number of downlink pilot time slot symbols are reserved in the downlink pilot time slot symbols close to the guard time slot symbols in the wireless frame of the interfering station in the target set, thereby respectively implementing scheduling of access users whose uplink quality exceeds a preset threshold value and is lower than a preset threshold value.

[0119] Preferably, after obtaining the interfering station according to the location of the interfered station, the method further includes the following steps:

[0120] Obtaining an average value of uplink interference intensity of the cell of the interfering station, and determining whether the average value of the uplink interference intensity is greater than a preset intensity threshold;

[0121] Then step S16 specifically includes: adding the interfering stations whose uplink interference intensity average value is greater than a preset intensity threshold into the target set.

[0122] Specifically, after locating the interfering station, the interference index analysis is performed on the interfering station, and the average uplink interference intensity N.UL.NI.Avg of its gNodeB cell is checked. The gNodeBs that meet the condition of N.UL.NI.Avg>-110dBm are included in a target set H1, so as to achieve targeted reservation and scheduling of time slot symbols for the interfering stations affected by the interference, thereby reducing interference to the uplink of the remote base station.

[0123] Preferably, the embodiment of the present invention adopts 3GPP Remote Interference Management (RIM) technology to locate the interfering station. Specifically, step S15, i.e., obtaining the interfering station according to the location of the interfered station, includes:

[0124] S151. Based on 3GPP remote interference management (RIM) technology, configure a RIM RS-1 signal for the victim station; wherein the RIM RS-1 signal is configured in the last downlink pilot time slot symbol of a special subframe in a radio frame of the victim station;

[0125] S152, detecting whether a communication base station has received the RIM RS-1 signal sent by the interfered station;

[0126] S153: Position the communication base station that receives the RIM RS-1 signal sent by the interfered station as the interfering station.

[0127] In the embodiment of the present invention, see Figure 7 The figure below is a schematic diagram of the operating principle of RIM technology in an embodiment of the present invention. 3GPP R16 introduces the Remote Interference Management (RIM) function. This function configures a RIM RS-1 signal at the victim station and detects it within a large surrounding area. If a communication base station detects the RIM RS-1 signal, it is determined to be a remote interfering station, or the interference source. Remote Interference Management (RIM) is based on the principle of electromagnetic wave reversibility. When an interfering station transmits downlink signals to a victim station via the atmospheric duct effect, the victim station's downlink signals can also be transmitted to the interfering station via the atmospheric duct effect.

[0128] like Figure 2 As shown, the downlink: uplink subframe ratio in the n41 (2.6GHz) frequency band is 8:2, the time slot ratio of the special subframe is 6:4:4, and the RIM RS-1 signal of the interfered station is configured as the last symbol of the downlink pilot time slot in the special subframe, that is, the 6th downlink pilot time slot symbol in the special subframe.

[0129] By adopting the technical means of the embodiments of the present invention, the remote interference management RIM framework supports the interference source to be identified between the interfering station and the interfered station through the RIM RS-1 signal, so that when the interference source is identified, interference mitigation or avoidance measures can be triggered in time.

[0130] As a preferred embodiment, the embodiment of the present invention is further implemented on the basis of any of the above embodiments, and the embodiment of the present invention optimizes the detection method of the uplink quality of the access user. Specifically, the relationship between the uplink quality of the access user and the preset threshold value is determined by the following steps:

[0131] Obtaining a PDCCH aggregation level of an access user of the interfered station;

[0132] When the PDCCH aggregation level of the access user is less than or equal to a preset level threshold, determining that the uplink quality of the access user exceeds the preset threshold;

[0133] When the PDCCH aggregation level of the access user is greater than a preset level threshold, it is determined that the uplink quality of the access user is lower than the preset threshold.

[0134] In an embodiment of the present invention, the indicator PDCCH uplink DCI aggregation level is used to characterize the uplink quality of users in the 5G cell. It should be noted that the NR system defines that PDCCH (Physical Downlink Control Channel) can use (1, 2, 4, 8, 16) consecutive CCEs (Control Channel Element), where the number of CCEs used is also called the aggregation level. The larger the DCI (Downlink Control Information) load, the greater the corresponding PDCCH aggregation level. The worse the wireless channel quality, the greater the required PDCCH aggregation level will be to ensure the transmission quality of the PDCCH. The more CCEs the PDCCH uses, that is, the higher the aggregation level, the better the demodulation performance, but it may also lead to waste of resources. The gNodeB determines the aggregation level used by a certain PDCCH based on factors such as channel quality.

[0135] The PDCCH uplink DCI aggregation level does not require the transmission of system messages. Instead, different aggregation levels are determined based on the current wireless quality of the accessing user. Therefore, the PDCCH uplink DCI aggregation level can represent the wireless channel quality at the location of the accessing user.

[0136] Optionally, the aggregation level is set to 4 as the level threshold. That is:

[0137] The aggregation levels for access users whose uplink quality exceeds the preset threshold T0 include:

[0138] PDCCH uplink DCI aggregation level = 4, PDCCH uplink DCI aggregation level = 2, PDCCH uplink DCI aggregation level = 1.

[0139] The users whose uplink quality exceeds a certain threshold T0 are defined as users with good uplink quality, and are scheduled within the range of the reserved n1 downlink pilot time slot symbols.

[0140] The aggregation levels for access users whose uplink quality is lower than the preset threshold T0 include:

[0141] PDCCH uplink DCI aggregation level = 16, PDCCH uplink DCI aggregation level = 8.

[0142] Users with uplink quality below a certain threshold T0 are defined as users with poor uplink quality, and are scheduled in downlink symbols outside of n1 to reduce interference with the far-end atmospheric waveguide.

[0143] By adopting the technical means of the embodiment of the present invention, the indicator PDCCH uplink DCI aggregation level is used to characterize the uplink quality of users in the communication base station cell, and the uplink quality of the accessed users is accurately evaluated.

[0144] As a preferred embodiment, the embodiment of the present invention is further implemented on the basis of any of the above embodiments. After step S14, the method further includes steps S17 and S18:

[0145] S17. Monitoring in real time the average uplink interference intensity of each cell of the communication base station in the target set;

[0146] S18: When the uplink interference intensity average value does not decrease, the target number is incremented according to a preset adjustment step size to update the reserved downlink pilot time slot symbols.

[0147] In an embodiment of the present invention, after reserving and scheduling time slot symbols for the communication base stations in the target set H1, the uplink interference index of each communication base station in the target set, that is, the uplink interference intensity average value N.UL.NI.Avg of the communication base station cell, is monitored in real time. If the uplink interference index does not improve, the target number n1 is incrementally expanded, that is, more downlink pilot time slot symbols are reserved to further avoid far-end interference from the interfering station to the interfered station. Optionally, the adjustment step size is set to 2 symbols, so that n1 = n1 + 2 (symbols);

[0148] It can be understood that if the uplink interference index improves, the RIM RS-1 signal is monitored. If the interfered station detects the RIM RS-1 signal, it indicates that the atmospheric duct effect still exists and the settings are retained. If no RIM RS-1 signal is found, it indicates that the atmospheric duct effect has disappeared and the original parameter settings are restored.

[0149] See also Figure 8 , is a schematic structural diagram of an atmospheric waveguide interference coordination device provided by an embodiment of the present invention. The embodiment of the present invention provides an atmospheric waveguide interference coordination device 20, comprising:

[0150] The interference intensity acquisition module 21 is configured to obtain, when atmospheric duct interference occurs, an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station subjected to atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe following the special subframe;

[0151] A target number determination module 22 is configured to count the number of target time slot symbols that meet a preset strong interference condition according to the interference intensity value received by the target time slot symbol to determine the target number;

[0152] A target set updating module 23 is configured to add the disturbed station to the target set;

[0153] The time slot symbol scheduling module 24 is used to reserve a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the protection time slot symbols in the wireless frame of each communication base station in the target set, and use the reserved downlink pilot time slot symbols to schedule access users whose uplink quality exceeds a preset threshold value, and use the unreserved downlink pilot time slot symbols to schedule access users whose uplink quality is lower than the preset threshold value.

[0154] By adopting the technical means of the embodiments of the present invention, the number of targets, the distance of atmospheric waveguide propagation, and the range of atmospheric waveguide interference are determined by counting the number of time slot symbols that are strongly interfered with in the interfered station affected by the atmospheric waveguide; and then, through time domain scheduling of the communication base station affected by the atmospheric waveguide, access users with good uplink quality are scheduled using the reserved n1 downlink pilot time slot symbols, and access users with poor uplink quality, that is, access users requiring more power, are scheduled using the downlink time domain outside the reserved n1 downlink pilot time slot symbols. This can more quickly and accurately perform time domain scheduling on the interfering station and the interfered station in the atmospheric waveguide interference scenario, and can effectively reduce the far-end interference of the interfering station on the interfered station. Moreover, the embodiment of the present invention can avoid the method of increasing the GP time slot symbols of the interfering station, the interfered station and all base stations in a large surrounding area under the atmospheric waveguide effect, thereby not losing downlink time and frequency resources, having little impact on the downlink peak rate, and ensuring the user's usage perception. At the same time, the embodiment of the present invention only operates on the communication base stations affected by the atmospheric waveguide interference, with low operating workload, short implementation intervals and strong timeliness.

[0155] As a preferred embodiment, the following steps are performed to detect whether the communication base station is a disturbed station affected by atmospheric waveguide interference:

[0156] Obtaining an average uplink interference intensity value of the cell of the communication base station, an interference intensity value of the last guard time slot symbol of the special subframe in the radio frame of the communication base station as a first interference intensity value, and an interference intensity value of the last uplink pilot time slot symbol of the last uplink subframe in the radio frame as a second interference intensity value;

[0157] When the uplink interference intensity average value is greater than a preset intensity threshold, and the difference between the first interference intensity value and the second interference intensity value is greater than a preset first difference threshold, the communication base station is determined to be a victim station affected by atmospheric waveguide interference.

[0158] As a preferred embodiment, the target quantity determination module is specifically configured to:

[0159] Determining, based on the interference intensity value received by the target time slot symbol, whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition;

[0160] Counting the number of target time slot symbols that meet the preset strong interference condition as the number of strong interference symbols detected by the interfered station;

[0161] The target number is determined according to the maximum number of strong interference symbols detected by all the interfered stations.

[0162] Preferably, judging whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol includes:

[0163] Obtaining an average uplink interference intensity of the cell of the interfered station when the interfered station is not interfered with by the atmospheric duct as a standard interference intensity average of the interfered station;

[0164] Calculating the difference between the interference intensity value of each target time slot symbol and the average value of the standard interference intensity;

[0165] When the difference is greater than a preset second difference threshold, the corresponding target time slot symbol is determined to be a target time slot symbol that meets the preset strong interference condition; wherein the second difference threshold is a positive value.

[0166] As a preferred embodiment, the device further comprises:

[0167] a disturbing station positioning module, configured to obtain a disturbing station according to the positioning of the disturbed station; wherein the disturbing station is a communication base station that causes atmospheric waveguide interference to the disturbed station;

[0168] The target set updating module is further configured to add the interfering station to the target set.

[0169] Preferably, the interfering station positioning module is specifically used to:

[0170] Based on the 3GPP remote interference management RIM technology, a RIM RS-1 signal is configured for the victim station; wherein the RIM RS-1 signal is configured in the last downlink pilot time slot symbol of the special subframe in the radio frame of the victim station;

[0171] Detecting whether a communication base station has received a RIM RS-1 signal sent by the interfered station;

[0172] The communication base station that receives the RIM RS-1 signal sent by the interfered station is positioned as the interfering station.

[0173] As a preferred implementation, the relationship between the uplink quality of the access user and the preset threshold is determined by the following steps:

[0174] Obtaining a PDCCH aggregation level of an access user of the interfered station;

[0175] When the PDCCH aggregation level of the access user is less than or equal to a preset level threshold, determining that the uplink quality of the access user exceeds the preset threshold;

[0176] When the PDCCH aggregation level of the access user is greater than a preset level threshold, it is determined that the uplink quality of the access user is lower than the preset threshold.

[0177] As a preferred embodiment, the device further comprises:

[0178] The target quantity adjustment module is used to monitor in real time the average uplink interference strength of the cell of each communication base station in the target set; when the average uplink interference strength does not decrease, the target quantity is increased according to a preset adjustment step to update the reserved downlink pilot time slot symbol.

[0179] It should be noted that the atmospheric waveguide interference coordination device provided in an embodiment of the present invention is used to execute all the process steps of the atmospheric waveguide interference coordination method of the above embodiment. The working principles and beneficial effects of the two correspond one to one, and therefore will not be repeated here.

[0180] See also Figure 9 , is a structural diagram of an atmospheric duct interference coordination device provided by an embodiment of the present invention. An embodiment of the present invention also provides an atmospheric duct interference coordination device 30, including a processor 31, a memory 32, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the atmospheric duct interference coordination method as described in any one of the above embodiments.

[0181] An embodiment of the present invention also provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the atmospheric waveguide interference coordination method as described in any one of the above embodiments.

[0182] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0183] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A coordination method for atmospheric duct interference, characterized in that: include: When atmospheric duct interference occurs, obtaining an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station subjected to atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe subsequent to the special subframe; According to the interference intensity value suffered by the target time slot symbol, counting the number of target time slot symbols that meet the preset strong interference condition to determine the target number; adding the disturbed station to a target set; Reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, and using the reserved downlink pilot time slot symbols for scheduling access users whose uplink quality exceeds a preset threshold value, and using the unreserved downlink pilot time slot symbols for scheduling access users whose uplink quality is lower than the preset threshold value; The step of counting the number of target time slot symbols that meet a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol to determine a target number includes: Determining, based on the interference intensity value received by the target time slot symbol, whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition; Counting the number of target time slot symbols that meet the preset strong interference condition as the number of strong interference symbols detected by the interfered station; The target number is determined according to the maximum number of strong interference symbols detected by all the interfered stations.

2. The method for coordinating atmospheric duct interference according to claim 1, wherein: Use the following steps to detect whether a communication base station is a victim of atmospheric waveguide interference: Obtaining an average uplink interference intensity value of the cell of the communication base station, an interference intensity value of the last guard time slot symbol of the special subframe in the radio frame of the communication base station as a first interference intensity value, and an interference intensity value of the last uplink pilot time slot symbol of the last uplink subframe in the radio frame as a second interference intensity value; When the uplink interference intensity average value is greater than a preset intensity threshold, and the difference between the first interference intensity value and the second interference intensity value is greater than a preset first difference threshold, the communication base station is determined to be a victim station affected by atmospheric waveguide interference.

3. The method for coordinating atmospheric duct interference according to claim 1, wherein: The determining, based on the interference intensity value suffered by the target time slot symbol, whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition includes: Obtaining an average uplink interference intensity of the cell of the interfered station when the interfered station is not interfered with by the atmospheric duct, as a standard interference intensity average of the interfered station; Calculating the difference between the interference intensity value of each target time slot symbol and the average value of the standard interference intensity; When the difference is greater than a preset second difference threshold, the corresponding target time slot symbol is determined to be a target time slot symbol that meets the preset strong interference condition; wherein the second difference threshold is a positive value.

4. The method for coordinating atmospheric duct interference according to claim 1, wherein: Before reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, the method further includes: Obtaining a disturbing station according to the location of the disturbed station; wherein the disturbing station is a communication base station that causes atmospheric waveguide interference to the disturbed station; The interfering station is added to the target set.

5. The method for coordinating atmospheric duct interference according to claim 4, wherein: The obtaining of the interfering station according to the location of the disturbed station includes: Based on the 3GPP remote interference management RIM technology, a RIM RS-1 signal is configured for the victim station; wherein the RIM RS-1 signal is configured in the last downlink pilot time slot symbol of the special subframe in the radio frame of the victim station; Detecting whether a communication base station has received a RIM RS-1 signal sent by the interfered station; The communication base station that receives the RIM RS-1 signal sent by the interfered station is positioned as the interfering station.

6. The method for coordinating atmospheric duct interference according to claim 1, wherein: The relationship between the uplink quality of the access user and the preset threshold is determined by the following steps: Obtaining a PDCCH aggregation level of an access user of the interfered station; When the PDCCH aggregation level of the access user is less than or equal to a preset level threshold, determining that the uplink quality of the access user exceeds the preset threshold; When the PDCCH aggregation level of the access user is greater than a preset level threshold, it is determined that the uplink quality of the access user is lower than the preset threshold.

7. The atmospheric duct interference coordination method according to any one of claims 1 to 6, characterized in that: After reserving a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, and using the reserved downlink pilot time slot symbols for scheduling access users whose uplink quality exceeds a preset threshold value, and using the unreserved downlink pilot time slot symbols for scheduling access users whose uplink quality is lower than the preset threshold value, the method further includes: Real-time monitoring of the average uplink interference intensity of each cell of the communication base station in the target set; When the uplink interference intensity average value does not decrease, the target number is incremented according to a preset adjustment step size to update the reserved downlink pilot time slot symbols.

8. A coordination device for atmospheric waveguide interference, characterized in that: include: an interference intensity acquisition module, configured to, when atmospheric duct interference occurs, obtain an interference intensity value of a target time slot symbol in a radio frame of a victim station; wherein the victim station is a communication base station subjected to atmospheric duct interference, and the target time slot symbol includes all guard time slot symbols and all uplink pilot time slot symbols of a special subframe in the radio frame, and all uplink pilot time slot symbols of an uplink subframe following the special subframe; A target number determination module is used to count the number of target time slot symbols that meet a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol to determine the target number; a target set updating module, configured to add the disturbed station to the target set; a time slot symbol scheduling module, configured to reserve a target number of downlink pilot time slot symbols in the downlink pilot time slot symbols close to the guard time slot symbols in the radio frame of each communication base station in the target set, and use the reserved downlink pilot time slot symbols for scheduling access users whose uplink quality exceeds a preset threshold value, and use the unreserved downlink pilot time slot symbols for scheduling access users whose uplink quality is lower than the preset threshold value; The target quantity determination module is specifically used to: Determining whether the target time slot symbol is a target time slot symbol that meets a preset strong interference condition according to the interference intensity value suffered by the target time slot symbol; Counting the number of target time slot symbols that meet the preset strong interference condition as the number of strong interference symbols detected by the interfered station; The target number is determined according to the maximum number of strong interference symbols detected by all the interfered stations.

9. A coordination device for atmospheric waveguide interference, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for coordinating atmospheric duct interference according to any one of claims 1 to 7 is implemented.

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