User terminal control method, base station and storage medium

Abstract

A user terminal control method provided in an embodiment of the present application includes: if it is determined that a target DSS cell is interfered by a first non-DSS cell, an interference flag is sent to the first non-DSS cell, the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency; when the first non-DSS cell receives the interference flag, a first user terminal is determined to be in the coverage area of ​​the target DSS cell among the user terminals accessing the first non-DSS cell; the first user terminal is accessed to a second non-DSS cell to eliminate the interference of the first non-DSS cell to the target DSS cell, the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies. It can be seen that by accessing the first user terminal, the interference source, to the second non-DSS cell, the interference of the first non-DSS cell to the target DSS cell can be eliminated, that is, the interference caused by the 4G non-DSS cell to the 5G DSS cell or the 4G DSS cell can be eliminated, thereby improving the user experience.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a user terminal control method, a base station and a storage medium. Background Art

[0002] In the deployment of 5G (5th generation mobile networks, fifth generation mobile communication technology) frequency bands, the 5G bandwidth opened by operators conflicts with the existing 4G (the 4th generation mobile communication technology, fourth generation mobile communication technology) bandwidth, causing interference between 5G cells and adjacent 4G cells. For example, China Mobile and other operators have deployed three 20MHz bandwidth 4G LTE carriers on the 2.6GHz frequency band. If they open 100MHz bandwidth 5G NR (5G New Radio, global 5G standard), there will be a conflict with the existing 4G LTE spectrum.

[0003] In the related art, in order to eliminate the aforementioned interference, DSS (Dynamic Spectrum Sharing) is adopted to dynamically re-cultivate the conflicting spectrum between the 5G cell and the adjacent 4G cell. For the convenience of discussion, this application refers to the cell deployed with DSS as a DSS cell, and the cell not deployed with DSS as a non-DSS cell. For example, the 5G cell deployed with DSS is called a 5G DSS cell, the 4G cell deployed with DSS is called a 4G DSS cell, and the 4G cell not deployed with DSS is called a 4G non-DSS cell. However, in the promotion process of DSS, there is a problem of discontinuous deployment, so that there is a 4G non-DSS cell between the 5G DSS cell and the 4G DSS cell. Therefore, the 4G non-DSS cell may cause interference to the 5G DSS cell or the 4G DSS cell. Summary of the invention

[0004] Based on this, an embodiment of the present application provides a user terminal control method, a base station and a storage medium to eliminate the interference caused by a 4G non-DSS cell to a 5G DSS cell or a 4G DSS cell.

[0005] In a first aspect, an embodiment of the present application provides a user terminal control method, the method comprising:

[0006] If it is determined that the target DSS cell is interfered by the first non-DSS cell, an interference flag is sent to the first non-DSS cell, and the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency point;

[0007] When the first non-DSS cell receives the interfered identifier, determining a first user terminal in the coverage area of ​​the target DSS cell among the user terminals accessing the first non-DSS cell;

[0008] The first user terminal is connected to a second non-DSS cell to eliminate interference of the first non-DSS cell to the target DSS cell, wherein the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies.

[0009] In a second aspect, an embodiment of the present application provides a base station, comprising a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program and implement the user terminal control method as described in the first aspect when executing the computer program.

[0010] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor enables the processor to implement the user terminal control method as described in the first aspect.

[0011] A user terminal control method provided in an embodiment of the present application includes: if it is determined that a target DSS cell is interfered by a first non-DSS cell, an interference flag is sent to the first non-DSS cell, the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency; when the first non-DSS cell receives the interference flag, a first user terminal is determined to be in the coverage area of ​​the target DSS cell among the user terminals accessing the first non-DSS cell; the first user terminal is accessed to a second non-DSS cell to eliminate the interference of the first non-DSS cell to the target DSS cell, the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies. It can be seen that by accessing the first user terminal, the interference source, to the second non-DSS cell, the interference of the first non-DSS cell to the target DSS cell can be eliminated, that is, the interference caused by the 4G non-DSS cell to the 5G DSS cell or the 4G DSS cell can be eliminated, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram for flower arrangement deployment;

[0013] Figure 2 A schematic diagram for discontinuous regional deployment;

[0014] Figure 3 A schematic diagram of interference caused by a 4G non-DSS cell to a 5G DSS cell;

[0015] Figure 4 This is a schematic diagram of an optional application scenario of each embodiment of the present application;

[0016] Figure 5 A schematic diagram of a flow chart of a user terminal control method provided in an embodiment of the present application;

[0017] Figure 6 A schematic diagram of a DSS cell sending an interference flag or a non-interference flag in an embodiment of the present application;

[0018] Figure 7 A schematic diagram of determining whether a target DSS cell is interfered by a first non-DSS cell in an embodiment of the present application;

[0019] Figure 8 A schematic diagram of determining a second user terminal in an embodiment of the present application;

[0020] Fig. 9 A schematic diagram of an overlapping relationship mapping table in an embodiment of the present application;

[0021] Fig.10 A schematic diagram of determining a first user terminal in an embodiment of the present application;

[0022] Fig.11 This is another optional application scenario schematic diagram of each embodiment of the present application;

[0023] Fig.12 A schematic block diagram of the structure of a base station provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0025] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0026] In conjunction with the accompanying drawings, some implementation methods of this specification are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] The inventors found that there is a problem of discontinuous deployment in the promotion of DSS, which results in the existence of 4G non-DSS cells between 5G DSS cells and 4G DSS cells. Figure 1As shown, there is a problem of flower arrangement in the promotion of DSS, or, as Figure 2 As shown in the figure, there is a problem of discontinuous regional deployment in the promotion process of DSS. The above two situations will cause the existence of 4G non-DSS cells between 5G DSS cells and 4G DSS cells, so that 4G non-DSS cells may interfere with 5G DSS cells or 4G DSS cells. It should be noted that the interference caused by the 4G non-DSS cells to the 5G DSS cells in the embodiments of the present application is as follows: Figure 3 As shown, it means that in the area covered by both the 4G non-DSS cell and the 5G DSS cell, a part of the user terminals (User Equipment, UE) accessing the 4G non-DSS cell interferes with a part of the user terminals accessing the 5G DSS cell; in addition, the interference caused by the 4G non-DSS cell to the 4G DSS cell described in the embodiment of the present application is similar and will not be repeated here. It can be understood that when the 4G non-DSS cell interferes with the 5G DSS cell or the 4G DSS cell, the user terminals accessing the 5G DSS cell or the 4G DSS cell that are interfered with have a poor user experience, such as a relatively low peak Internet access rate.

[0028] The embodiments of the present application can be applied to Figure 4 In the application scenario shown, in this scenario, the base station 10 can manage several cells, which may include several DSS cells and several non-DSS cells, wherein the DSS cells may include 5GDSS cells or 4G DSS cells, etc., and the non-DSS cells may include 4G non-DSS cells, 3G non-DSS cells or 2G non-DSS cells, etc. It should be noted that Figure 4 The cells in the network can be managed by one base station 10 or by multiple base stations 10, and one or more base stations 10 can eliminate the interference caused by the 4G non-DSS cell to the 5G DSS cell or the 4G DSS cell by executing the method described in the embodiment of the present application.

[0029] A user terminal control method provided in an embodiment of the present application can be applied to a base station, such as Figure 5 As shown, the method includes but is not limited to steps S10 to S30.

[0030] Step S10: If it is determined that the target DSS cell is interfered by the first non-DSS cell, an interference flag is sent to the first non-DSS cell.

[0031] The 5G NR deployed by the operator in a certain frequency band conflicts with the existing 4G LTE in the spectrum. After dynamic refarming through DSS, the non-DSS cell may interfere with the DSS cell in the same frequency band (i.e., the same frequency point) and which is a neighboring cell. The method described in the embodiment of the present application is to solve this interference. Therefore, in the embodiment of the present application, the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency point.

[0032] Exemplarily, the target DSS cell includes a 4G DSS cell or a 5G DSS cell, the first non-DSS cell includes a 4G non-DSS cell, the target DSS cell and the first non-DSS cell are neighboring cells, and the frequency points of the two are the same, for example, both are 2.6 GHz, 2.1 GHz, etc.

[0033] In some embodiments, if it is determined that the target DSS cell is interfered with by the first non-DSS cell, the base station sends an interfered flag to the first non-DSS cell; if it is determined that the target DSS cell is not interfered with by the first non-DSS cell, the base station sends a non-interfered flag to the first non-DSS cell.

[0034] For example, Figure 6 As shown, if DSS cell 1 is interfered by the first non-DSS cell 1, DSS cell 1 sends an interfered flag to the first non-DSS cell 1; if DSS cell 1 is not interfered by the first non-DSS cell 2, DSS cell 1 sends a non-interfered flag to the first non-DSS cell 2.

[0035] In some embodiments, step S10 includes but is not limited to steps S101 to S102.

[0036] Step S101: If the PRB utilization rate of the target DSS cell exceeds a preset first threshold, a second user terminal having a first signal-to-noise quality value that does not meet the standard and located in a first non-DSS cell coverage area is screened out from user terminals accessing the target DSS cell.

[0037] Step S102: If the proportion of the number of second user terminals in the number of user terminals accessing the target DSS cell exceeds a preset second threshold, it is determined that the target DSS cell is interfered by the first non-DSS cell.

[0038] Among them, the PRB (Physical Resource Block) utilization rate can be used to characterize how many physical resource blocks are currently occupied by the cell. If the PRB utilization rate is low, it means that the remaining physical resource blocks in the cell are relatively abundant. If the PRB utilization rate is high, the opposite is true. In addition, when the target DSS cell is interfered by one or more first non-DSS cells, its PRB utilization rate will increase due to the interference. Based on this, when the PRB utilization rate of the target DSS cell exceeds the first threshold value, the second user terminal whose first signal-to-noise quality value does not meet the standard and is in the coverage area of ​​the first non-DSS cell can be screened out for further judgment. It should be noted that the first threshold value can be reasonably set according to actual needs, for example, set to 80%, 85%, etc.

[0039] The user terminal accessing the target DSS cell described in the embodiment of the present application refers to a user terminal accessing the target DSS cell in a broad sense. For example, if the target DSS cell includes a 4G cell or a 5G cell of standalone networking (SA), the user terminal accessing the target DSS cell refers to the user terminal actually accessing the target DSS cell. For another example, if the target DSS cell includes a 5G cell of non-standalone networking (NSA), such as the NSA 5G cell is networked with a 4G cell, if the user terminal actually accesses the 4G cell, but the user terminal adds the NSA 5G cell as SN (Secondary Node), then this user terminal is also regarded as a user terminal accessing the target DSS cell.

[0040] After the second user terminal is screened out, if the proportion of the number of the second user terminals in the number of user terminals accessing the target DSS cell exceeds the second threshold value, that is, the quality difference ratio exceeds the second threshold value, it can be determined that the target DSS cell is interfered by the first non-DSS cell. In some implementations, the quality difference ratio can be determined according to the following formula:

[0041]

[0042] Among them, K represents the quality difference ratio, num (second user terminal) represents the number of second user terminals, and num (user terminals accessing the target DSS cell) represents the number of user terminals accessing the target DSS cell. When K exceeds the second threshold value, it can be determined that the target DSS cell is interfered by the first non-DSS cell. It should be noted that the second threshold value can be reasonably set according to actual needs, for example, set to 30%, 35%, etc.

[0043] For example, Figure 7As shown, there are five user terminals accessing the target DSS cell, namely UE1, UE2, UE3, UE4 and UE5, among which UE1 and UE2 are in the coverage area of ​​the first non-DSS cell 1, UE4 and UE5 are in the coverage area of ​​the first non-DSS cell 2, and the signal-to-noise quality values ​​of UE1, UE2 and UE4 do not meet the standard. Based on this, if the PRB utilization rate of the target DSS cell exceeds the first threshold value, on the one hand, for the first non-DSS cell 1, UE1 and UE2 are screened out, so as to determine that the quality ratio is 40%> the second threshold value = 30%, then it is determined that the target DSS cell is interfered by the first non-DSS cell 1; on the other hand, for the first non-DSS cell 2, UE4 is screened out, so as to determine that the quality ratio is 20%< the second threshold value = 30%, then it is determined that the target DSS cell is not interfered by the first non-DSS cell 1.

[0044] In some embodiments, step S101 includes but is not limited to steps S1011 to S1012.

[0045] Step S1011: select a third user terminal whose first signal-to-noise quality value is lower than a preset third threshold value from user terminals accessing the target DSS cell.

[0046] Step S1012: Send a first measurement instruction to the third user terminal, and use the third user terminal that has reported the corresponding measurement result as the second user terminal.

[0047] It should be noted that if a user terminal is in the coverage area of ​​multiple cells, the user terminal has a corresponding signal-to-noise quality value relative to each cell. For example, if the user terminal is in the coverage area of ​​two cells, there is a signal-to-noise quality value for one of the cells and another signal-to-noise quality value for the other cell. Therefore, the first signal-to-noise quality value refers to the signal-to-noise quality value of the user terminal relative to the target DSS cell. Based on this, if the PRB utilization rate of the target DSS cell exceeds the first threshold value, the third user terminal whose first signal-to-noise quality value is lower than the third threshold value can be first screened out from the user terminals accessing the target DSS cell. It can be understood that the third user terminal may be due to interference from the first non-DSS cell, resulting in substandard signal-to-noise quality. Among them, the first signal-to-noise quality value may include any one of an RSRP (Reference Signal Receiving Power, reference signal received power) value, an RSRQ (Reference Signal Receiving Quality, reference signal received quality) value, or an SINR (Signal to Interference plus Noise Ratio, signal to interference plus noise ratio, referred to as signal-to-noise ratio) value, and the size of the first signal-to-noise quality value can be reasonably set according to actual needs. For example, the first signal-to-noise quality value includes an SINR value, which can be set to 30 dB.

[0048] In order to determine which third user terminals have substandard signal-to-noise quality due to interference from the first non-DSS cell, it is necessary to continue screening after the third user terminals are screened out. Therefore, a first measurement instruction can be sent to the third user terminal. If the third user terminal reports the measurement result, it can be determined that the third user terminal has substandard signal-to-noise quality due to interference from the first non-DSS cell, so the third user terminal can be used as the second user terminal; if the third user terminal does not report the measurement result, it can be determined that the third user terminal is not substandard due to interference from the first non-DSS cell, but may be due to hardware problems of the user terminal or other reasons.

[0049] Among them, the first measurement instruction is used to enable the third user terminal to measure the second signal-to-noise quality value of the first non-DSS cell, and to enable the third user terminal to report the measurement result when the second signal-to-noise quality value meets the standard. In some embodiments, the first measurement instruction carries a threshold value. When the third user terminal receives the instruction, the third user terminal will measure the second signal-to-noise quality value of the first non-DSS cell. If the second signal-to-noise quality value exceeds the threshold value, the third user terminal will report the measurement result, for example, reporting the second signal-to-noise quality value. It can be understood that if the second signal-to-noise quality value exceeds the threshold value, it can be characterized that the third user terminal is in the coverage area of ​​the first non-DSS cell; if the second signal-to-noise quality value does not exceed the threshold value, the third user terminal will not report the measurement result.

[0050] For example, Figure 8 As shown, there are four user terminals accessing the target DSS cell, namely UE1, UE2, UE3 and UE4, wherein the first signal-to-noise quality values ​​of UE1, UE2 and UE4 are lower than the third threshold value. Based on this, UE1, UE2 and UE4 whose signal-to-noise quality does not meet the standard can be screened out from these four user terminals first, and then the first measurement instruction is sent to UE1, UE2 and UE4. If the measurement results reported by UE1 and UE2 are received, UE1 and UE2 can be used as the second user terminal. Among them, the first measurement instruction carries a threshold value. Since UE1 and UE2 measure the second signal-to-noise quality value of the first non-DSS cell according to the measurement instruction and it exceeds the threshold value, UE1 and UE2 will report the measurement results; and since UE4 measures the second signal-to-noise quality value of the first non-DSS cell according to the measurement instruction and it does not exceed the threshold value, UE4 will not report the measurement result.

[0051] Step S20: When the first non-DSS cell receives the interference flag, a first user terminal located in the coverage area of ​​the target DSS cell is determined among the user terminals accessing the first non-DSS cell.

[0052] If the first non-DSS cell receives an interference flag, it is determined that the first non-DSS cell causes interference to the DSS cell, that is, some user terminals accessing the first non-DSS cell cause interference to some user terminals accessing the target DSS cell. Therefore, it is necessary to find the first user terminal within the coverage area of ​​the target DSS cell among the user terminals accessing the first non-DSS cell, that is, to find the source of interference.

[0053] In some embodiments, the target DSS cell includes a 4G DSS cell, and the first non-DSS cell includes a 4G non-DSS cell. Based on this, step S20 includes but is not limited to step S201.

[0054] Step S201: Send a second measurement instruction to a 4G user terminal and / or a 5G user terminal accessing a first non-DSS cell, and use the user terminal that reports the corresponding measurement result as the first user terminal.

[0055] Among them, the 4G user terminal accessing the first non-DSS cell refers to a user terminal that supports 4G, and the 5G user terminal accessing the first non-DSS cell refers to a user terminal that supports 5G. Of course, the 5G user terminal can also support 4G. In order to determine the first user terminal, a second measurement instruction can be issued to the 4G user terminal and / or 5G user terminal accessing the first non-DSS cell. If the user terminal reports a measurement result, it indicates that the user terminal is within the coverage area of ​​the target DSS cell, and it can be used as the first user terminal; if the user terminal does not report a measurement result, it indicates that the user terminal is not within the coverage area of ​​the target DSS cell.

[0056] The second measurement instruction is used to enable the 4G user terminal and / or the 5G user terminal to measure the third signal-to-noise quality value of the target DSS cell, and to enable the 4G user terminal and / or the 5G user terminal to report the measurement result when the third signal-to-noise quality value reaches the standard. In some embodiments, the second measurement instruction carries a threshold value. When the 4G user terminal and / or the 5G user terminal receives the instruction, these user terminals will measure the third signal-to-noise quality value of the target DSS cell. If the third signal-to-noise quality value exceeds the threshold value, it indicates that the corresponding user terminal is in the coverage area of ​​the target DSS cell, and the corresponding user terminal will report the measurement result, for example, the third signal-to-noise quality value; if the third signal-to-noise quality value does not exceed the threshold value, the corresponding user terminal will not report the measurement result.

[0057] For example, if there are four user terminals accessing the first non-DSS cell, namely UE1, UE2, UE3 and UE4, and these four user terminals can all support 4G. Based on this, a second measurement instruction can be issued to these four user terminals. If the measurement results reported by UE1 and UE2 are received, UE1 and UE2 can be used as the first user terminal. Among them, the second measurement instruction carries a threshold value. Since UE1 and UE2 measure the third signal-to-noise quality value of the target DSS cell according to the measurement instruction and it exceeds the threshold value, UE1 and UE2 will report the measurement result; and since UE3 and UE4 measure the third signal-to-noise quality value of the target DSS cell according to the measurement instruction and it does not exceed the threshold value, UE3 and UE4 will not report the measurement result.

[0058] In some embodiments, the target DSS cell includes a 5G DSS cell, and the first non-DSS cell includes a 4G non-DSS cell. Based on this, step S20 includes but is not limited to step S202.

[0059] Step S202: send a third measurement instruction to the 5G user terminal accessing the first non-DSS cell, and use the 5G user terminal that reports the corresponding measurement results as the first user terminal.

[0060] Since the target DSS cell includes a 5G DSS cell, and the 5G user terminal is a user terminal that can support 5G, for the 5G user terminals accessing the first non-DSS cell, these 5G user terminals can measure the signal-to-noise quality of the target DSS cell. Therefore, a third measurement instruction can be issued to the 5G user terminal accessing the first non-DSS cell. If the 5G user terminal reports the measurement result, it indicates that the 5G user terminal is in the coverage area of ​​the target DSS cell, and it can be used as the first user terminal; if the 5G user terminal does not report the measurement result, it indicates that the 5G user terminal is not in the coverage area of ​​the target DSS cell.

[0061] Among them, the third measurement instruction is used to enable the 5G user terminal to measure the fourth signal-to-noise quality value of the target DSS cell, and to enable the 5G user terminal to report the measurement result when the fourth signal-to-noise quality value meets the standard. In some embodiments, the third measurement instruction carries a threshold value. When the 5G user terminals accessing the first non-DSS cell receive the instruction, these 5G user terminals will measure the fourth signal-to-noise quality value of the target DSS cell. If the fourth signal-to-noise quality value exceeds the threshold value, it indicates that the 5G user terminal is in the coverage area of ​​the target DSS cell, and the 5G user terminal will report the measurement result, for example, the fourth signal-to-noise quality value; if the fourth signal-to-noise quality value does not exceed the threshold value, the 5G user terminal will not report the measurement result.

[0062] In some embodiments, the target DSS cell includes a 5G DSS cell, and the first non-DSS cell includes a 4G non-DSS cell. Since the target DSS cell includes a 5G DSS cell, and the non-5G user terminal is a user terminal that cannot support 5G, for non-5G user terminals accessing the first non-DSS cell, these non-5G user terminals cannot measure the signal-to-noise quality of the target DSS cell. Based on this, step S20 includes but is not limited to steps S203 to S205.

[0063] Step S203: Send an MR (Measurement Report) measurement instruction to the non-5G user terminal accessing the first non-DSS cell to receive the signal-to-noise strength value reported by the non-5G user terminal.

[0064] Step S204: Determine whether the non-5G user terminal is within the coverage area of ​​the target DSS cell based on the signal-to-noise strength value and a preset overlapping relationship mapping table.

[0065] Step S205: A non-5G user terminal within the coverage area of ​​the target DSS cell is determined as the first user terminal.

[0066] Among them, MR measurement means that information is sent once every 480ms on the service channel (470ms on the signaling channel), and these data can be used for network evaluation and optimization. Therefore, an MR measurement instruction can be issued to the non-5G user terminal, so that the non-5G user terminal periodically performs measurements and periodically reports the measurement results. Since it is necessary to determine whether the non-5G user terminal is in the coverage area of ​​the target DSS cell, the measurement is performed on the frequency point where the target DSS cell is located; in addition, the aforementioned measurement results include signal-to-noise strength values, and the signal-to-noise strength values ​​include RSRP values, etc. In some embodiments, since the non-5G user terminal periodically reports the measurement results, the base station can determine a relatively stable signal-to-noise strength value based on several measurement results. After determining the signal-to-noise strength value of the non-5G user terminal, it can be determined whether the non-5G user terminal is in the coverage area of ​​the target DSS cell according to the overlapping relationship mapping table. If determined, the non-5G user terminal is used as the first user terminal.

[0067] In some implementations, the overlapping relationship mapping table is constructed based on multiple measurement data acquired in advance, and the multiple measurement data are the signal-to-noise strength values ​​reported by the 5G user terminals when the sixth measurement instruction is issued to the 5G user terminals accessing the first non-DSS cell, and the sixth measurement instruction is used to enable these 5G user terminals to periodically measure the frequency point where the target DSS cell is located and report the measurement data. The construction process of the overlapping relationship mapping table is briefly described below:

[0068] 1) Send a sixth measurement instruction to the 5G user terminals accessing the first non-DSS cell, so that these 5G user terminals periodically measure the frequency of the target DSS cell and report the measured signal-to-noise strength values.

[0069] 2) Collect a large amount of measurement data, such as measurement data collected within a month, and learn these measurement data based on a clustering algorithm to construct an overlapping relationship mapping table including multiple mapping elements, such as Fig. 9 As shown, each mapping element includes a service cell identifier, a strongest co-frequency neighbor cell identifier, a second strongest co-frequency neighbor cell identifier, and a signal-to-noise strength range, wherein the service cell identifier corresponds to the first non-DSS cell, that is, the first non-DSS cell can be found based on the service cell identifier. Simply put, each signal-to-noise strength range divides the first non-DSS cell into multiple sub-areas, and the sub-areas are within the coverage area of ​​other cells with the same frequency, that is, within the coverage area of ​​the cell corresponding to the strongest co-frequency neighbor cell identifier and / or within the coverage area of ​​the cell corresponding to the second strongest co-frequency neighbor cell identifier. It should be noted that Fig. 9It is just a schematic drawing of two mapping elements.

[0070] Based on this, step S204 includes but is not limited to steps S2041 to S2044.

[0071] Step S2041: determining a mapping element corresponding to a signal-to-noise strength value in an overlapping relationship mapping table.

[0072] Step S2042: Determine whether the strongest co-frequency neighbor cell identifier or the second strongest co-frequency neighbor cell identifier in the mapping element corresponding to the signal-to-noise strength value corresponds to the target DSS cell.

[0073] Step S2043: If yes, it is determined that the non-5G user terminal is within the coverage area of ​​the target DSS cell.

[0074] Step S2044: If there is no correspondence, it is determined that the non-5G user terminal is not in the coverage area of ​​the target DSS cell.

[0075] According to the aforementioned signal-to-noise strength value, determine which mapping element's signal-to-noise strength range the signal-to-noise strength value is within, and the mapping element corresponds to the signal-to-noise strength value. After determining the corresponding mapping element, determine whether the strongest co-frequency neighboring area identifier or the second strongest co-frequency neighboring area identifier in the mapping element corresponds to the target DSS cell. If so, determine that the non-5G user terminal is within the coverage area of ​​the target DSS cell; if not, determine that the non-5G user terminal is not within the coverage area of ​​the target DSS cell.

[0076] For example, Fig.10 As shown, the target DSS cell includes a 5G DSS cell and is set to an identifier of 5A, the first non-DSS cell includes a 4G non-DSS cell and is set to an identifier of 4B, and the user terminals accessing the first non-DSS cell are UE1, UE2, UE3 and UE4, among which UE1 and UE4 support 5G, while UE2 and UE3 do not support 5G. Based on this, if the first non-DSS cell receives an interference identification, on the one hand, a third measurement instruction is sent to UE1 and UE4. Since UE1 reports the measurement result, UE1 is used as the first user terminal; on the other hand, an MR measurement instruction is sent to UE2 and UE3 to receive the signal-to-noise strength value reported by UE2 and UE3. For example, the signal-to-noise strength value reported by UE2 is -93dBm, and the signal-to-noise strength value reported by UE3 is -97dBm. If the preset overlapping relationship mapping table is as follows Fig. 9 As shown, it can be determined that the strongest co-frequency neighboring cell identifier included in the mapping element corresponding to -93dBm is 5A, corresponding to the target DSS cell, and therefore UE2 is used as the first user terminal.

[0077] Step S30: connecting the first user terminal to a second non-DSS cell to eliminate interference of the first non-DSS cell to the target DSS cell, wherein the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies.

[0078] As can be seen from the above, the interference of the first non-DSS cell to the target DSS cell is caused by the first user terminal, that is, the first user terminal is the interference source. Therefore, connecting the first user terminal to the second non-DSS cell, which is a neighboring cell with a different frequency, can be understood as moving the interference source away. In this way, the interference of the first non-DSS cell to the target DSS cell can be eliminated, that is, the interference caused by the 4G non-DSS cell to the 5G DSS cell or the 4G DSS cell is eliminated, thereby improving the user experience. It can be understood that migrating the first user terminal to the second non-DSS cell is to ensure that the migrated first user terminal will no longer cause interference to the target DSS cell.

[0079] In some embodiments, step S30 includes but is not limited to steps S301 to S302.

[0080] Step S301: Send a fourth measurement instruction to the first user terminal, where the fourth measurement instruction is used to enable the first user terminal to measure a fifth signal-to-noise quality value of the second non-DSS cell, and to enable the first user terminal to report the measurement result when the fifth signal-to-noise quality value meets the standard.

[0081] Step S302: If the measurement result reported by the first user terminal is received, the first user terminal is connected to the second non-DSS cell.

[0082] In order to ensure the success rate of the migration of the first user terminal, a fourth measurement instruction can be issued to the first user terminal. In some embodiments, the first user terminal will measure the fifth signal-to-noise quality value of the second non-DSS cell when receiving the instruction. In addition, the fourth measurement instruction carries a threshold value. If the fifth signal-to-noise quality value exceeds the threshold value, it indicates that the first user terminal is in the coverage area of ​​the second non-DSS cell. The first user terminal will report the measurement result, such as reporting the fifth signal-to-noise quality value. Therefore, if the first user terminal reports the measurement result, the first user terminal can be connected to the second non-DSS cell; if the fifth signal-to-noise quality value does not exceed the threshold value, the first user terminal will not report the measurement result.

[0083] In some implementations, if the fourth measurement instruction is sent to the first user terminal and no measurement result is received, the method further includes but is not limited to steps S303 to S304.

[0084] Step S303: Send a fifth measurement instruction to the first user terminal, where the fifth measurement instruction is used to enable the first user terminal to measure a sixth signal-to-noise quality value of the third non-DSS cell, and to enable the first user terminal to report the measurement result when the sixth signal-to-noise quality value meets the standard.

[0085] Step S304: If the measurement result reported by the first user terminal is received, the first user terminal is connected to a third non-DSS cell.

[0086] Among them, the third non-DSS cell and the first non-DSS cell are neighboring cells and are located at different frequencies, and the mobile communication technologies adopted by the third non-DSS cell and the first non-DSS cell are different. For example, the mobile communication technology adopted by the first non-DSS cell is 4G, that is, the first non-DSS cell is a 4G cell, and the frequency of the first non-DSS cell is 2.1GHz, while the mobile communication technology adopted by the third non-DSS cell is 2G, that is, the third non-DSS cell is a 2G cell, and the frequency of the third non-DSS cell is 800MHz.

[0087] When the fourth measurement instruction is sent to the first user terminal and no measurement result is received, in order to ensure the success rate of the migration of the first user terminal, a fifth measurement instruction may be sent to the first user terminal. In some embodiments, the first user terminal will measure the sixth signal-to-noise quality value of the third non-DSS cell when receiving the instruction. In addition, the fifth measurement instruction carries a threshold value, which can be set smaller than the threshold value carried by the fourth measurement instruction. If the sixth signal-to-noise quality value exceeds the threshold value, it indicates that the first user terminal is in the coverage area of ​​the third non-DSS cell. The first user terminal will report the measurement result, for example, the sixth signal-to-noise quality value. Therefore, if the first user terminal has reported the measurement result, the first user terminal can be connected to the third non-DSS cell.

[0088] Based on the above discussion, the embodiments of the present application can be applied to Fig.11 The application scenario shown in the figure, in which one or more base stations jointly manage four cells, and these four cells are neighboring cells, among which cell 5A is a 5G cell and its frequency is 2.1GHz, cell 4A and cell 4B are both 4G cells and their frequency is 2.1GHz, cell 4C is a 4G cell and its frequency is 1.8GHz, and cell 5A and cell 4A are DSS cells. It can be understood from the above that cell 4B may interfere with cell 5A or cell 4A. In addition, the user terminals accessing cell 5A are UE1, UE2, UE3 and UE4, the user terminals accessing cell 4A are UE5, UE6, UE7 and UE8, and the user terminals accessing cell 4B are UE9, UE10, UE11 and UE12, among which UE9 and UE11 support 5G, while UE10 and UE12 do not support 5G.

[0089] Based on this, if the first threshold value is set to 70%, and the PRB utilization rates of the 5A cell and the 4A cell are 80% and 20% respectively, then on the one hand, since the PRB utilization rate of the 5A cell exceeds the first threshold value, it is necessary to screen out the second user terminal from UE1, UE2, UE3 and UE4. Therefore, if the third threshold value is set to 30dB, and the first signal-to-noise quality values ​​of UE1, UE2, UE3 and UE4 are 36dB, 35dB, 28d and 25dB respectively, UE3 and UE4 whose signal-to-noise quality does not meet the standard can be screened out first and the first measurement instruction can be issued to UE3 and UE4, so that UE3 and UE4 respectively measure the second signal-to-noise quality value of the 4B cell and report the measurement results, so that UE3 and UE4 can be determined as the second user terminal, that is, UE3 and UE4 are interfered user terminals. Next, if the second threshold is set to 30%, since the number of second user terminals is 2 and the number of user terminals accessing cell 5A is 4, the poor quality ratio is 50%, which exceeds the second threshold. Therefore, it can be determined that cell 5A is interfered by cell 4B and cell 5A sends an interfered flag to cell 4B. On the other hand, since the PRB utilization rate of cell 4A does not exceed the first threshold, cell 4A can send a non-interfered flag to cell 4B.

[0090] When the 4B cell receives the interference identification from the 5A cell, it needs to identify the first user terminal. Since the 5A cell is a 5G cell, on the one hand, the third measurement instruction is sent to UE9 and UE11, so that UE9 and UE11 respectively measure the fourth signal-to-noise quality value of the 5A cell. If the signal-to-noise quality of UE9 meets the standard, UE9 will report the measurement result. If the signal-to-noise quality of UE11 does not meet the standard, UE11 will not report the measurement result. In this way, it can be determined that UE9 is the first user terminal. On the other hand, if the pre-constructed overlapping relationship mapping table is as follows Fig. 9 As shown, MR measurement instructions are sent to UE10 and UE12. If the signal-to-noise strength values ​​of UE10 and UE12 are -90dBm and -97dBm respectively, then according to the overlapping relationship mapping table, the strongest co-frequency neighboring area identifier in the mapping element corresponding to -90dBm is 5A, that is, it corresponds to the 5A cell; the strongest co-frequency neighboring area identifier in the mapping element corresponding to -97dBm does not correspond to the 5A cell, so it can be determined that UE10 is the first user terminal. In this way, it can be confirmed that UE9 and UE10 are the first user terminals, that is, the interference sources.

[0091] After determining that the first user terminal needs to be migrated, the fourth measurement instruction can be issued to UE9 and UE10, so that UE9 and UE10 measure the fifth signal-to-noise quality value of the 4C cell. If UE9 and UE10 both report the measurement results, UE9 and UE10 can be connected to the 4C cell. In this way, the interference caused by the 4B cell to the 5A cell can be eliminated, that is, the interference caused by the non-DSS cell to the DSS cell can be eliminated.

[0092] An embodiment of the present application provides a base station, such as Fig.12 As shown, it includes a processor and a memory, the memory is used to store a computer program; the processor is used to execute the computer program and implement any user terminal control method provided in the embodiments of the present application when executing the computer program.

[0093] It should be understood that the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0094] An embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the processor implements any user terminal control method provided in the embodiment of the present application.

[0095] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between the 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 by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable storage medium, which may include a computer-readable storage medium (or a non-transitory medium) and a communication medium (or a temporary medium).

[0096] As is known to those of ordinary skill in the art, the term computer-readable storage media includes volatile and nonvolatile, 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-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium.

[0097] Exemplarily, the computer-readable storage medium may be an internal storage unit of the base station described in the foregoing embodiments, such as a hard disk or memory of the base station. The computer-readable storage medium may also be an external storage device of the base station, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc., equipped on the base station.

[0098] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A user terminal control method, characterized in that: The method comprises: If it is determined that the target DSS cell is interfered by the first non-DSS cell, an interference flag is sent to the first non-DSS cell, and the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency point; When the first non-DSS cell receives the interference identifier, determining a first user terminal in the coverage area of ​​the target DSS cell among the user terminals accessing the first non-DSS cell; Accessing the first user terminal to a second non-DSS cell to eliminate interference of the first non-DSS cell to the target DSS cell, where the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies; The determining, among the user terminals accessing the first non-DSS cell, a first user terminal located within the coverage area of ​​the target DSS cell comprises one of the following: In the case where the target DSS cell includes a 4G DSS cell and the first non-DSS cell includes a 4G non-DSS cell, a second measurement instruction is sent to a 4G user terminal accessing the first non-DSS cell, and a user terminal that reports a corresponding measurement result is used as a first user terminal; wherein the second measurement instruction is used to enable the 4G user terminal to measure a third signal-to-noise quality value for the target DSS cell, and is used to enable the 4G user terminal to report the measurement result when the third signal-to-noise quality value meets the standard; or, In a case where the target DSS cell includes a 4G DSS cell and the first non-DSS cell includes a 4G non-DSS cell, a second measurement instruction is sent to a 5G user terminal accessing the first non-DSS cell, and a user terminal that reports a corresponding measurement result is used as a first user terminal; wherein the second measurement instruction is used to enable the 5G user terminal to measure a third signal-to-noise quality value for the target DSS cell, and to enable the 5G user terminal to report the measurement result when the third signal-to-noise quality value meets the standard; or, When the target DSS cell includes a 5G DSS cell and the first non-DSS cell includes a 4G non-DSS cell, a third measurement instruction is issued to a 5G user terminal accessing the first non-DSS cell, and the 5G user terminal that reports the corresponding measurement result is used as the first user terminal, wherein the third measurement instruction is used to enable the 5G user terminal to measure a fourth signal-to-noise quality value of the target DSS cell, and to enable the 5G user terminal to report the measurement result when the fourth signal-to-noise quality value meets the standard.

2. The method according to claim 1, characterized in that The determining that the target DSS cell is interfered by the first non-DSS cell includes: If the PRB utilization rate of the target DSS cell exceeds a preset first threshold value, a second user terminal whose first signal-to-noise quality value does not meet the standard and is within the coverage area of ​​the first non-DSS cell is screened out from the user terminals accessing the target DSS cell; If the proportion of the number of the second user terminals in the number of user terminals accessing the target DSS cell exceeds a preset second threshold, it is determined that the target DSS cell is interfered by the first non-DSS cell.

3. The method according to claim 2, characterized in that The step of screening out, from among the user terminals accessing the target DSS cell, a second user terminal whose first signal-to-noise quality value does not meet the standard and is located in the coverage area of ​​the first non-DSS cell, includes: Screening out a third user terminal having a first signal-to-noise quality value lower than a preset third threshold value from user terminals accessing the target DSS cell; A first measurement instruction is issued to the third user terminal, and the third user terminal that reports the corresponding measurement result is used as the second user terminal, wherein the first measurement instruction is used to enable the third user terminal to measure a second signal-to-noise quality value about the first non-DSS cell, and is used to enable the third user terminal to report the measurement result when the second signal-to-noise quality value meets the standard.

4. The method according to any one of claims 1 to 3, characterized in that: The accessing the first user terminal to a second non-DSS cell includes: sending a fourth measurement instruction to the first user terminal, where the fourth measurement instruction is used to enable the first user terminal to measure a fifth signal-to-noise quality value of the second non-DSS cell, and to enable the first user terminal to report the measurement result when the fifth signal-to-noise quality value meets the standard; If the measurement result reported by the first user terminal is received, the first user terminal is connected to the second non-DSS cell.

5. The method according to claim 4, characterized in that If the measurement result reported by the first user terminal cannot be received, the method further includes: sending a fifth measurement instruction to the first user terminal, where the fifth measurement instruction is used to enable the first user terminal to measure a sixth signal-to-noise quality value of a third non-DSS cell, and to enable the first user terminal to report the measurement result when the sixth signal-to-noise quality value meets the standard, wherein the third non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies, and the third non-DSS cell and the first non-DSS cell use different mobile communication technologies; If the measurement result reported by the first user terminal is received, the first user terminal is connected to the third non-DSS cell.

6. A user terminal control method, characterized in that: The method comprises: If it is determined that the target DSS cell is interfered by the first non-DSS cell, an interference identification is sent to the first non-DSS cell, the target DSS cell and the first non-DSS cell are neighboring cells and have the same frequency; the target DSS cell includes a 5G DSS cell; the first non-DSS cell includes a 4G non-DSS cell; When the first non-DSS cell receives the interfered identifier, an MR measurement instruction is issued to the non-5G user terminal accessing the first non-DSS cell to receive the signal-to-noise strength value reported by the non-5G user terminal; Determine whether the non-5G user terminal is within the coverage area of ​​the target DSS cell according to the signal-to-noise strength value and a preset overlapping relationship mapping table; Determine a non-5G user terminal within the coverage area of ​​the target DSS cell as a first user terminal; The first user terminal is connected to a second non-DSS cell to eliminate interference of the first non-DSS cell to the target DSS cell, wherein the second non-DSS cell and the first non-DSS cell are neighboring cells and have different frequencies.

7. The method according to claim 6, characterized in that The overlapping relationship mapping table includes a plurality of mapping elements, each of which includes a serving cell identifier, a strongest co-frequency neighboring cell identifier, a second strongest co-frequency neighboring cell identifier, and a signal-to-noise strength range, and the serving cell identifier corresponds to the first non-DSS cell; The determining, according to the signal-to-noise strength value, in a preset overlapping relationship mapping table whether the non-5G user terminal is within the coverage area of ​​the target DSS cell includes: Determine in the overlapping relationship mapping table a mapping element corresponding to the signal-to-noise intensity value, wherein the signal-to-noise intensity value is within a signal-to-noise intensity range in the mapping element; Determine whether the strongest co-frequency neighbor cell identifier or the second strongest co-frequency neighbor cell identifier in the mapping element corresponding to the signal-to-noise strength value corresponds to the target DSS cell; If yes, it is determined that the non-5G user terminal is within the coverage area of ​​the target DSS cell; If not, it is determined that the non-5G user terminal is not within the coverage area of ​​the target DSS cell.

8. A base station, characterized in that: including a processor and a memory; The memory is used to store computer programs; The processor is used to execute the computer program and implement the user terminal control method according to any one of claims 1 to 5 or 6 to 7 when executing the computer program.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor implements the user terminal control method according to any one of claims 1 to 5, or 6 to 7.

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