Interference detection method, device, electronic device and storage medium

Abstract

The embodiments of the present application provide an interference detection method, device, electronic device and storage medium, and relate to the field of communication technology. The method includes: receiving a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal; determining the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered according to the CQI of the overlapping subband in the CSI-RS at multiple times; determining the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered. The embodiments of the present application can avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single time, lay the foundation for solving the problem of low throughput caused by interfering subbands, and improve the service level of the network.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an interference detection method, device, electronic device and storage medium. Background Art

[0002] When multiple communication systems are networked together, there is overlap between the bandwidths of different communication systems, and the overlapping bandwidth will cause serious interference to different communication systems. For example, when the new radio (NR) system and the long-term evolution (LTE) system are networked together, the LTE base station is not completely decommissioned, and the NR base station will be interfered by the surrounding LTE base stations.

[0003] For example, the NR system occupies 100MHz bandwidth, but 40MHz of it overlaps with the two 20MHz bandwidths of the LTE system. Therefore, if the LTE cell and the NR cell have the same coverage or overlapping coverage, they will cause serious interference to each other. Figure 1 As shown, in the frequency band of 2515-2635Mhz, the 100M bandwidth occupied by the NR system and the D1 and D2 frequency bands occupied by the LTE system, each with a bandwidth of 20M, will conflict.

[0004] like Figure 2 As shown, due to the mobility of the terminal, in the edge area of ​​the communication system signal coverage, the downlink signal of the LTE base station will interfere with UE2 at the edge of the NR base station, and the downlink signal of the NR base station will also interfere with UE1 at the edge of the LTE base station.

[0005] In the traditional NR scheduling algorithm, frequency selection scheduling is performed only based on the UE's subband reporting. However, the granularity of the subband CQI (channel quality indicator) reporting is relatively small and cannot indicate the level of interference. For the scheduled UE, if the traffic volume is relatively large, high and low interference PRBs (physical resource blocks) will be scheduled together due to business needs, resulting in decoding failures, a decrease in throughput, and interference to the existing LTE network. Summary of the invention

[0006] Embodiments of the present invention provide an interference detection method, device, electronic device, and storage medium that overcome the above problems or at least partially solve the above problems.

[0007] In a first aspect, an interference detection method is provided, the method comprising:

[0008] receiving a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal, where the candidate terminal is located at the edge of the coverage of the first communication system, and the CSI-RS includes a channel quality indication CQI of an overlapping subband in the first communication system; the overlapping subband is a subband where the frequency bands of the first communication system and the second communication system overlap;

[0009] Determine, according to the CQI of the overlapping subband in the CSI-RS at multiple times, the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered;

[0010] The interfered subband in the overlapping subband is determined according to the number of times the overlapping subband is interfered reported by each candidate terminal in the at least one candidate terminal.

[0011] In a possible implementation manner, receiving a channel state information reference signal CSI-RS at multiple time points reported by at least one candidate terminal, before that also includes:

[0012] Determine a terminal located at an edge of the coverage of the first communication system as a candidate terminal;

[0013] Configuration information is sent to at least one candidate terminal, where the configuration information is used for the at least one candidate terminal to measure and report the CSI-RS.

[0014] In a possible implementation manner, determining the number of moments when the overlapping subband is interfered reported by each candidate terminal of at least one candidate terminal also includes:

[0015] The received CSI-RS are grouped using a sliding window mechanism, and each group of CSI-RS includes CSI-RS at multiple time points reported by at least one candidate terminal.

[0016] In a possible implementation, determining, according to the CQI of the overlapping subband in the CSI-RS at multiple times, the number of times that the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered includes:

[0017] For the CSI-RS at any time reported by each candidate terminal, if the CQI value of the overlapping subband in the CSI-RS at any time meets the preset condition, it is determined that the overlapping subband is interfered once.

[0018] In a possible implementation, determining the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in at least one candidate terminal includes:

[0019] For each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered to the total number of CQIs of the overlapping subband reported by at least one candidate terminal is greater than a first preset threshold, the candidate terminal is used as a target terminal;

[0020] For any subband in the overlapping subbands, a second ratio of the number of times any subband reported by all target terminals is interfered to the total number of CQIs of the overlapping subbands reported by all target terminals is calculated, and whether any subband is an interfered subband is determined according to the second ratio.

[0021] In a possible implementation manner, determining whether any subband is an interfered subband according to the second ratio includes:

[0022] If the second ratio is greater than the second preset threshold, any subband is determined to be an interfered subband.

[0023] In a possible implementation manner, determining whether any subband is an interfered subband according to the second ratio includes:

[0024] Determine a value interval of the second ratio;

[0025] The interference level of any subband is determined according to the correspondence between the pre-set value interval and the interference level, and the number of the interference levels is at least two.

[0026] In a possible implementation manner, determining the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered, the method further includes:

[0027] Construct a linked list of candidate terminals, the linked list including the index of the reporting time, the index of the overlapping subband, and the number of times the overlapping subband reported by the candidate terminal is interfered;

[0028] Determining the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in at least one candidate terminal includes:

[0029] The interfered subband in the overlapping subband is determined according to the number of times the overlapping subband reported by the candidate terminal in the linked list of at least one candidate terminal is interfered.

[0030] In a second aspect, an interference detection device is provided, comprising:

[0031] A signal receiving module, configured to receive a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal, where the candidate terminal is located at the edge of the coverage of the first communication system, and the CSI-RS includes a channel quality indication CQI of an overlapping subband in the first communication system; the overlapping subband is a subband whose frequency band overlaps between the first communication system and the second communication system;

[0032] An interference number determination module, used to determine the number of interferences reported by each candidate terminal in at least one candidate terminal according to the CQI of the overlapping subband in the CSI-RS at multiple moments;

[0033] The interfered subband determining module is used to determine the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in at least one candidate terminal.

[0034] In a possible implementation, the interference detection device further includes:

[0035] A candidate terminal determination module, configured to determine a terminal located at an edge of a coverage area of ​​the first communication system as a candidate terminal;

[0036] The configuration information sending module is used to send configuration information to at least one candidate terminal, where the configuration information is used for at least one candidate terminal to measure and report CSI-RS.

[0037] In a possible implementation, the interference detection device further includes:

[0038] The sliding grouping module is used to group the received CSI-RS by using a sliding window mechanism, and each group of CSI-RS includes CSI-RS at multiple time points reported by at least one candidate terminal.

[0039] In a possible implementation, the interference times determination module is specifically used to: for the CSI-RS at any time reported by each candidate terminal, if the CQI value of the overlapping subband in the CSI-RS at any time meets the preset condition, it is determined that the overlapping subband is interfered once.

[0040] In a possible implementation, the interfered subband determining module includes:

[0041] a target terminal determination unit, configured to, for each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered with to the total number of CQIs of the overlapping subband reported by at least one candidate terminal is greater than a first preset threshold, take the candidate terminal as the target terminal;

[0042] The judging unit is used to calculate, for any one of the overlapping subbands, a second ratio of the number of times any one of the overlapping subbands reported by all target terminals is interfered with to the total number of CQIs of the overlapping subbands reported by all target terminals, and judge whether any one of the overlapping subbands is an interfered subband according to the second ratio.

[0043] In a possible implementation, the judging unit is specifically configured to: if the second ratio is greater than a second preset threshold, determine that any subband is an interfered subband

[0044] In a possible implementation, the judgment unit is specifically used to: determine a value interval where the second ratio is located, and determine the interference level of any subband according to a pre-set correspondence between the value interval and the interference level, where the number of interference levels is at least two.

[0045] In a possible implementation, the interference detection device further includes:

[0046] Construct a linked list of candidate terminals, the linked list including the index of the reporting time, the index of the overlapping subband, and the number of times the overlapping subband reported by the candidate terminal is interfered;

[0047] The interfered subband determining module is specifically used to determine the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by the candidate terminal in the linked list of at least one candidate terminal is interfered.

[0048] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method provided in the first aspect are implemented.

[0049] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method provided in the first aspect.

[0050] In a fifth aspect, an embodiment of the present invention provides a computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. When a processor of a computer device reads the computer instructions from the computer-readable storage medium, the processor executes the computer instructions, so that the computer device executes the steps of implementing the method provided in the first aspect.

[0051] The interference detection method, device, electronic device and storage medium provided by the embodiments of the present invention can avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single moment by receiving the CSI-RS at multiple moments reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping subband in the first communication system, thereby laying a foundation for solving the problem of low throughput caused by the interfering subband and improving the service level of the network. After receiving the CSI-RS, the number of times the overlapping subband of each candidate terminal is interfered is first determined, laying a foundation for the subsequent elimination of candidate terminals with normal signal status, and further improving the accuracy of the subsequent determination of the interfered subband in the overlapping subband. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0053] Figure 1 A schematic diagram of spectrum occupancy of the NR system and the LTE system provided in an embodiment of the present application;

[0054] Figure 2 A schematic diagram of interference caused to a terminal by an NR system and an LTE system provided in an embodiment of the present application;

[0055] Figure 3 A flowchart of an interference detection method provided in an embodiment of the present application;

[0056] Figure 4 A schematic diagram of a network architecture provided for an embodiment of the present application;

[0057] Figure 5a-5c A schematic diagram of the overlap method of an embodiment of the present application;

[0058] Figure 6 A flowchart of an interference detection method provided by another embodiment of the present application;

[0059] Figure 7 A schematic diagram of an application scenario provided by an embodiment of the present application;

[0060] Figure 8 A schematic diagram of the structure of an interference detection device provided in an embodiment of the present application;

[0061] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present invention.

[0063] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "an" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0064] In the existing configuration of reporting of CSI (Channel State Information) of a subband, the reported CQI level is too small, and interference is determined by using the reported subband, which is inaccurate.

[0065] Sub-band differential CQI value Offset level 0 0 1 1 2 ≥2 3 ≤-1

[0066] Table 1 Subband CQI level table

[0067] Table 1 shows the subband CQI registration table in the prior art. There are only 4 levels for subband CQI reporting. For the interfered subband, the reported level is 3, which only indicates that there is interference during measurement, but the degree and duration of interference are unknown. If only the offset level>0 is considered, then for the scheduling UE, the number of PRBs that can be scheduled will be relatively small. If the service requirements are considered, the scheduling PRB requirements are large, and the high and low interference PRBs will be scheduled together.

[0068] The interference detection method, device, electronic device and storage medium provided in this application are intended to solve the above technical problems in the prior art.

[0069] Some of the terms used in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

[0070] 1. Terminal equipment. In the embodiments of the present application, the terminal equipment is a device with wireless transceiver functions, which can be called terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. The terminal equipment can be fixed or mobile. It should be noted that the terminal equipment can support at least one wireless communication technology, such as LTE, NR, wideband code division multiple access (WCDMA), etc. For example, the terminal device may be a mobile phone, a tablet computer (pad), a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal device in a future evolved public mobile land network (PLMN), etc. In some embodiments of the present application, the terminal may also be a device with a transceiver function, such as a chip system, wherein the chip system may include a chip and may also include other discrete devices.

[0071] 2. Network equipment. In the embodiment of the present application, the network equipment is a device that provides wireless communication functions for terminal equipment, and can also be referred to as access network equipment, radio access network (RAN) equipment, etc. Among them, the network equipment can support at least one wireless communication technology, such as LTE, NR, WCDMA, etc. For example, the network equipment includes but is not limited to: the next generation base station (generation nodeB, gNB) in the fifth generation mobile communication system (5th-generation, 5G), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node ​​B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved node B, or home nodeB, HNB), baseband unit (baseband unit, BBU), transmitting and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc. The network device may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, and a network device in future mobile communications or a network device in a future evolving PLMN. In some embodiments, the network device may also be a device having a wireless communication function for a terminal device, such as a chip system. For example, the chip system may include a chip and may also include other discrete devices.

[0072] 3. Communication between the terminal device and the network device. In the embodiment of the present application, the terminal device and the network device communicate through a communication interface. For example, the communication interface between the terminal device and the network device can be a universal UE to network interface (Uu air interface). When the communication interface between the terminal device and the network device is a Uu air interface, the communication between the terminal device and the network device can also be referred to as Uu air interface communication.

[0073] 4. Frequency domain resources. In the embodiment of the present application, frequency domain resources refer to a region or range in the frequency domain, which is the embodiment of resources in the frequency domain dimension. For example, when represented by a resource grid, a positive integer number of subcarriers, such as 12, may be included in an RB in the frequency domain. For example, the frequency domain resources may also be referred to as a carrier, a frequency domain region, a frequency band, a subband or a frequency band, etc. For another example, the frequency domain resources may specifically be 5MHz, 10MHZ, 50MHz, etc.

[0074] 5. CSI (Channel State Information)-RS (Reference Signal). The CSI of the embodiment of the present application is used by the terminal to measure the channel state between the terminal and the network device. Through CSI measurement and reporting, the network device can know the specific state of the downlink channel, so that more appropriate parameters can be used for scheduling, thereby improving transmission efficiency and transmission speed.

[0075] 6. CQI is the quality of the wireless channel fed back by the terminal to the base station, which is usually obtained based on the quality of the received reference signal. The base station performs service scheduling based on the CQI fed back by the terminal and other information. CQI is a sub-information in CSI-RS.

[0076] 7. Carrier bandwidth part. The carrier bandwidth part in the embodiment of the present application may be referred to as the bandwidth part (BWP), which refers to a continuous or non-continuous frequency domain resource on the carrier, wherein the bandwidth of this continuous or non-continuous frequency domain resource does not exceed the bandwidth capability of the terminal device, that is, the bandwidth of the BWP is less than or equal to the maximum bandwidth supported by the terminal device. Taking BWP as a continuous frequency domain resource on a carrier as an example, BWP may be a group of continuous resource blocks (RB) on the carrier, or BWP is a group of continuous subcarriers on the carrier, or BWP is a group of continuous resource block groups (RBG) on the carrier, etc. Among them, an RBG includes at least one RB, such as 1, 2, 4, 6 or 8, etc., and an RB may include at least one subcarrier, such as 12, etc. In the embodiment of the present application, the BWP used for communication between the terminal device and the network device is configured by the network device. For a terminal device, the network device may configure one or more BWPs for the terminal device in a carrier.

[0077] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0078] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0079] See also Figure 3 , which exemplarily shows a flow chart of an interference detection method provided in an embodiment of the present application, the execution subject of the method is a network device, as shown in the figure, including:

[0080] S101. Receive a channel state information reference signal CSI-RS at multiple time points reported by at least one candidate terminal.

[0081] The candidate terminal in the embodiment of the present application is a terminal located at the edge of the coverage of the first communication system, and the network device is a network device that supports the first communication system. Exemplarily, the candidate terminal can be counted into the first communication system through the network device and obtain the service of the first communication system. Figure 4 As shown, the network structure of the first communication system is included.

[0082] As shown in the beginning of the embodiment, the first communication system and the second communication system in the embodiment of the present application may be an NR communication system and an LTE communication system, respectively. Figure 3 The embodiment is described using the example that the first communication system and the second communication system can be an NR communication system and an LTE communication system respectively, but it should be noted that the first communication system and the second communication system can be any of the communication systems mentioned above, or any communication systems evolved subsequently, as long as the first communication system and the second communication system are not the same communication system, and this application does not impose any restrictions.

[0083] The CSI-RS in the embodiment of the present application includes a channel quality indicator CQI of an overlapping subband in the first communication system. The overlapping subband is a subband whose frequency band overlaps between the first communication system and the second communication system, and the number of the overlapping subbands may be one or more.

[0084] Optionally, the CSI-RS may be carried on a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).

[0085] The candidate terminal of the embodiment of the present application can report only the CQI of the overlapping subband, or report the CQI of all subbands in the first communication system, and the network device selects the CQI of the overlapping subband from the CQI of all subbands. The specific value of the CQI of the embodiment of the present application can refer to the above Table 1.

[0086] When the candidate terminal only reports the CQI of the overlapping subband, the network device in the embodiment of the present application further includes, before receiving the CSI-RS reported by the terminal device:

[0087] The first configuration information is sent to the candidate terminal, where the first configuration information is used by the terminal device to determine a sub-band whose frequency band overlaps between the first communication system and the second communication system.

[0088] The first configuration information may specifically include configuration information of the carrier of the second communication system, and the configuration information of the carrier of the second communication system may include one or more of the subcarrier position of the center of the carrier of the second communication system and the bandwidth of the carrier of the second communication system. In this way, the terminal device can obtain the frequency band of each subband in the second communication system. As an implementation method, the terminal device can obtain the bandwidth size and / or position of the activated BWP in the first communication system, that is, the communication system to which it is connected, through the network device, so that the terminal device can obtain the frequency band of each subband in the first communication system.

[0089] Based on the above assumptions, the subband of the first communication system can be understood as the activated BWP of the first communication system; and the subband of the second communication system can be understood as the carrier of the second communication system.

[0090] Based on the first configuration information, the terminal device can determine the subband where the frequency bands of the first communication system and the second communication system overlap. For example, the bandwidth of the activated BWP of the NR communication system is a continuous frequency domain range of 50MHz, and the bandwidth of the carrier of the LTE communication system is 20MHz. Figure 5a , Figure 5b or Figure 5c is an example of the overlap between the two. Among these three overlap methods, Figure 5a , Figure 5b The overlap bandwidth is 20MHz. Figure 5c It is less than 20MHz.

[0091] When the CQI of all subbands in the first communication system is reported, the network device obtains comprehensive information related to the channel quality. Based on this, the network device can optimize the scheduling method of the terminal device, such as selecting a more reliable MCS, better transmission resources, etc., to improve the throughput of the terminal device and the efficiency of the entire communication system.

[0092] In the embodiment of the present application, only the terminal at the edge of the coverage of the first communication system needs to upload the CQI of the sub-band or the overlapping sub-band, while the terminal not at the edge does not need to upload the CQI of the sub-band or the overlapping sub-band, thereby improving the processing efficiency of both the terminal device and the network device.

[0093] S102: Determine, according to the CQIs of the overlapping subbands in the CSI-RS at multiple time points, the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered.

[0094] Since the signal states perceived by different terminals at the same time may be different, the CQIs of the overlapping subbands reported by different terminals may also be different. In the embodiment of the present application, for each candidate terminal, the number of times the overlapping subbands reported by the candidate terminal at multiple times are interfered is determined. If the number of times the overlapping subbands reported by a candidate terminal are interfered is small, it can be considered that the signal state of the candidate terminal is normal, and it is excluded when the interfered subband is determined later, thereby improving the accuracy of determining the interfered subband.

[0095] S103: Determine an interfered subband in the overlapping subbands according to the number of times the overlapping subbands are interfered reported by each candidate terminal in at least one candidate terminal.

[0096] Optionally, the embodiment of the present application can count the number of times each overlapping sub-band is interfered, and report the overlapping sub-bands interfered by candidate terminals more than a first preset number or more than a second preset number as interfered sub-bands, and the embodiment of the present application does not make specific limitations.

[0097] The interference detection method of the embodiment of the present application, by receiving CSI-RS at multiple times reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping subband in the first communication system, can avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single time, lay the foundation for solving the problem of low throughput caused by the interfering subband, improve the service level of the network, and after receiving the CSI-RS, first determine the number of times the overlapping subband of each candidate terminal is interfered, lay the foundation for the subsequent elimination of candidate terminals with normal signal status, and further improve the accuracy of the subsequent determination of the interfered subband in the overlapping subband.

[0098] Based on the above embodiments, as an optional embodiment, receiving a channel state information reference signal CSI-RS at multiple time points reported by at least one candidate terminal, further comprising:

[0099] Determine a terminal located at an edge of the coverage of the first communication system as a candidate terminal;

[0100] Specifically, the embodiment of the present application can determine the position of each terminal based on RSRP (Reference Signal Receiving Power). Specifically, the RSRP single threshold reporting mechanism can be used, that is, by comparing the measured RSRP with only a single threshold value, the location status information of the terminal is obtained. This method uses a single threshold value and can obtain roughly accurate terminal location information. Specifically, it is to receive the RS (ReferenceSignal) signal of the serving cell at the UE end, measure its power in a certain frequency band, and compare it with the set RSRP threshold value. If it is less than the threshold value, it is judged to be at the edge of the cell; if it is greater than the threshold value, it is judged to be inside the cell. The terminal at the edge of the cell can be used as a candidate terminal in the embodiment of the present application.

[0101] Configuration information is sent to at least one candidate terminal, where the configuration information is used for the at least one candidate terminal to measure and report the CSI-RS.

[0102] See also Figure 6 , which exemplarily shows a flow chart of an interference detection method according to another embodiment of the present application;

[0103] S201, the terminal device measures the RSRP value, and through the RSRP single threshold reporting mechanism, feedbacks to the network device that it is a cell internal terminal or a cell edge terminal;

[0104] S202, the network device takes the cell edge terminal as a candidate terminal and sends configuration information to the candidate terminal, where the configuration information is used for the candidate terminal to measure and report CSI-RS;

[0105] S203, the candidate terminal measures and reports the CSI-RS at multiple time points to the network device according to the received configuration information;

[0106] S204: The network device determines an interfered subband in the overlapping subband according to the received CSI-RS.

[0107] Based on the above embodiments, as an optional embodiment, the number of moments when the overlapping subband is interfered reported by each candidate terminal in at least one candidate terminal is determined, and the method further includes:

[0108] The received CSI-RS are grouped using a sliding window mechanism, and each group of CSI-RS includes CSI-RS at multiple time points reported by at least one candidate terminal.

[0109] For example, if the terminal device measures and reports the CSI-RS once every 1 second, and the size of the sliding window is 5, then the network device receives the CSI-RS measured and reported by the terminal device from the 1st second to the 5th second, a total of 5 times, and can perform the first step of determining the interfered subband in the overlapping subband. After the 6th second, the network device determines the interfered subband in the overlapping subband again according to the CSI-RS from the 2nd second to the 6th second, and so on. The embodiment of the present application avoids the disadvantage of delay in periodic interference detection by using the sliding window statistics method.

[0110] Based on the above embodiments, as an optional embodiment, determining the number of times that the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered according to the CQI of the overlapping subband in the CSI-RS at multiple times includes:

[0111] For the CSI-RS at any time reported by each candidate terminal, if the CQI value of the overlapping subband in the CSI-RS at any time meets the preset condition, it is determined that the overlapping subband is interfered once. Taking Table 1 as an example, if the CQI value of a certain overlapping subband at a certain time is 3, it is determined that the overlapping subband is interfered once at this time, and if the CQI value is 0, 1 or 2, it is determined that the overlapping subband is not interfered at this time.

[0112] Based on the above embodiments, as an optional embodiment, determining the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered includes:

[0113] For each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered to the total number of CQIs of the overlapping subband reported by at least one candidate terminal is greater than a first preset threshold, the candidate terminal is used as a target terminal;

[0114] For any subband in the overlapping subbands, a second ratio of the number of times any subband reported by all target terminals is interfered to the total number of CQIs of the overlapping subbands reported by all target terminals is calculated, and whether any subband is an interfered subband is determined according to the second ratio.

[0115] The embodiment of the present application first needs to screen out the target terminal from the candidate terminals. The target terminal refers to a candidate terminal for which the first ratio of the number of times the overlapping subbands reported by the terminal are interfered with to the total number of CQIs of the overlapping subbands reported by at least one candidate terminal is greater than the first preset threshold value. For example, each (moment) CSI-RS includes CQIs of 5 overlapping subbands. If the network device determines the interfered subband based on the CSI-RS at 10 moments each time, assuming that the number of times the overlapping subbands are interfered in the CSI-RS at 10 moments reported by a candidate terminal is 5, and the first preset threshold value is 20%, then the first ratio of the number of times the overlapping subbands reported by the candidate terminal are interfered with to the total number of CQIs of the overlapping subbands reported by at least one candidate terminal is 5 / 50=10%, which is less than 20%, so it does not belong to the target terminal.

[0116] It should be noted that when counting the number of times that an overlapping subband is interfered, it is possible that a certain overlapping subband is determined to be interfered when measured at multiple times by the terminal device, or it is possible that a certain overlapping subband is determined to be interfered at some times when measured at multiple times by the terminal device. For the same overlapping subband, if it is determined to be interfered when measured at n (n is a positive integer) times, the number of times that the overlapping subband is interfered is n.

[0117] After the target terminal is determined from the candidate terminals, the interfered subband is subsequently determined only based on the CSI-RS reported by the target terminal at multiple times. Specifically, it is based on calculating the second ratio of the number of times any subband reported by all target terminals is interfered with to the total number of CQIs of the overlapping subbands reported by all target terminals.

[0118] In the embodiment of the present application, when determining whether any subband is an interfered subband according to the second ratio, a single threshold value may be used to determine the interfered subband, that is, if the second ratio is greater than the second preset threshold value, the subband is determined to be an interfered subband, otherwise, it is not an interfered subband.

[0119] In addition, the degree of interference of the interfered subband can also be determined by setting multiple thresholds. For example, if the second ratio is greater than the third threshold, the subband is determined to be a high interference subband, if the second ratio is between the third threshold and the fourth threshold, the subband is determined to be a medium interference subband, and if the second ratio is between the fourth threshold and the fifth threshold, the subband is determined to be a low interference subband, wherein the third threshold is greater than the fourth threshold, and the fourth threshold is greater than the fifth threshold. The embodiment of the present application does not specifically limit the number of value ranges, and the number of interference levels is at least two.

[0120] The interference detection method of the present application is described below in conjunction with a specific embodiment. Figure 7 , which exemplarily shows a schematic diagram of an application scenario provided by an embodiment of the present application, such as Figure 7As shown, there are 6 terminal devices, namely UE1, UE3~UE7, in the NR communication system (shown as NR in the figure), among which UE1 is the central device, UE3~UE7 are devices at the edge of the coverage of the NR communication system, that is, candidate devices, UE2 is a terminal in the LTE communication system 2, and UE8 is a terminal in the LTE communication system 1. Both LTE communication system 1 (shown as LTE1 in the figure) and LTE communication system 2 (shown as LTE2 in the figure) will cause downlink interference to UE3~UE7, and the NR communication system will cause downlink interference to UE8.

[0121] The network equipment of the NR communication system configures UE1 to report wideband CQI measurement, and the CSI-RS configured for UE3 to UE7 needs to report subband CQI in addition to wideband CQI. The broadband of the embodiment of the present application includes 18 subbands, which are subband 1 to subband 18 in order of frequency band size, among which subbands 11 to 18 are the frequency bands that overlap with the NR communication system and the LTE communication system, that is, overlapping subbands.

[0122] If UE3 to UE7 report CSI-RS at five times, and the interfered overlapping subbands reported at the five times are the same, they are all:

[0123] UE3: subband 11, subband 13, and subband 16;

[0124] UE4: subband 17;

[0125] UE5: subband 11, subband 12, subband 13, subband 14, subband 16, and subband 18;

[0126] UE6: subband 11, subband 13, subband 15, subband 16, and subband 18;

[0127] UE7: subband 11, subband 13, and subband 16.

[0128] And the first preset threshold is 20%, the first value interval is (80%, 100%], the second value interval is (40%, 80%], the third value interval is (0%, 40%], the interference level corresponding to the first value interval is a high interference sub-band, the interference level corresponding to the second value interval is a medium interference sub-band, and the interference level corresponding to the third value interval is a low interference sub-band.

[0129] First, the target terminal is determined from UE3 to UE7. Among them, only one UE17 is interfered in UE4 in 5 reports. Therefore, the number of times the overlapping subband of UE4 is interfered is 5, and the total number of CQIs of the overlapping subband is 8×5=40. It can be seen that the first ratio is 12.5%, which is less than 20%, so UE4 is not a target terminal. The first ratios corresponding to UE3, UE5, UE6 and UE7 are 37.5%, 75%, 62.5% and 37.5% respectively, which are all greater than 20%, so the target terminals are UE3, UE5, UE6 and UE7.

[0130] Then determine whether each overlapping sub-band is an interfered sub-band:

[0131] Taking subband 11 as an example, since subband 11 is measured to be interfered by 4 target terminals at each moment, the second ratio corresponding to subband 11 is (4*5) / (4*5)=100%. Since 100% falls within the first value range, subband 11 is a high-interference subband.

[0132] Taking subband 12 as an example, since subband 12 is only measured to be interfered by UE5 at each moment, the second ratio corresponding to subband 12 is (1*5) / (4*5)=25%, which falls within the third value range, then subband 12 is a low interference subband.

[0133] According to the same method, the second ratios of sub-band 13 to sub-band 18 can be calculated as 100%, 25%, 25%, 100%, 0%, and 50%, respectively. Therefore, the corresponding interference levels are high, low, low, high, low, and medium, respectively.

[0134] The method for determining the interfered subband by using a sliding window mechanism in the embodiment of the present application is further described following the above embodiment. The CSI-RS reported by UE3 to UE7 at the sixth moment is:

[0135] UE3: subband 11 and subband 16;

[0136] UE4: subband 13, subband 15, and subband 17;

[0137] UE5: subband 11, subband 12, subband 13, subband 14, subband 16, and subband 18;

[0138] UE6: subband 11, subband 13, subband 15, subband 16, and subband 18;

[0139] UE7: subband 11, subband 13, and subband 16.

[0140] The network device determines the interfered subband according to the CSI-RS at the 2nd to 6th moments:

[0141] First, the target terminals are determined to be UE3, UE5, UE6 and UE7 from UE3 to UR7;

[0142] According to the CSI-RS reported by UE3, UE5, UE6 and UE7, the second ratios corresponding to subbands 11 to 18 are determined to be 100%, 25%, 95%, 25%, 25%, 100%, 0%, and 50%, respectively, and the corresponding interference levels are high, low, high, low, low, high, low, and medium, respectively.

[0143] Based on the above embodiments, as an optional embodiment, the interfered subband in the overlapping subband is determined according to the number of times the overlapping subband reported by each candidate terminal in at least one candidate terminal is interfered, and the method further includes:

[0144] Construct a linked list of candidate terminals, the linked list including the index of the candidate terminal, the index of the overlapping subband, and the number of times the overlapping subband is interfered reported by the candidate terminal;

[0145] A linked list is a non-continuous and non-sequential storage structure on a physical storage unit, and the logical order of data elements is realized by the pointer link order in the linked list. In the embodiment of the present application, a corresponding linked list is constructed for each candidate terminal, and three traversals are maintained in the linked list, which are the index of the working time, the index of the overlapping subband, and the number of times the overlapping subband of the candidate terminal is disturbed when it is working. For example, if a candidate terminal reports that the CQI value of the overlapping subband y in the CSI-RS at time x meets the preset conditions (for example, the CQI value is 3), then the number of interferences with the index of the working time x and the overlapping subband y in the linked list is increased by 1.

[0146] Correspondingly, determining the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in at least one candidate terminal includes:

[0147] The interfered subband in the overlapping subband is determined according to the number of times the overlapping subband reported by the candidate terminal in the linked list of at least one candidate terminal is interfered.

[0148] Since the linked list of each candidate terminal records the number of times each overlapping sub-band is interfered with at multiple moments, the first ratio corresponding to each candidate terminal can be quickly counted according to the linked list, and then the target terminal can be screened out. By further using the linked list of the target terminal, the second ratio corresponding to each overlapping sub-band can be determined, thereby determining the interfered sub-band in the overlapping sub-band.

[0149] The embodiment of the present application records the number of times each sub-band is interfered with through a linked list, with fast insertion and deletion speed and high memory utilization, without wasting memory, and no fixed limit on the size of the linked list, making expansion more flexible. Further combining the sliding window mechanism to delete and add each index in the linked list can further improve the efficiency of determining the interfered sub-band.

[0150] The embodiment of the present application provides an interference detection device. In one example, the interference detection device is used to implement the function of the network device in the above method. The device can be a network device or a device in a network device. The device can be a chip system. In the embodiment of the present application, the chip system can be composed of a chip or include a chip and other discrete devices.

[0151] like Figure 8 As shown, the device may include: a signal receiving module 101, an interference number determining module 102 and an interfered subband determining module 103, specifically:

[0152] The signal receiving module 101 is configured to receive a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal, where the candidate terminal is located at the edge of the coverage of the first communication system, and the CSI-RS includes a channel quality indication CQI of an overlapping subband in the first communication system; the overlapping subband is a subband whose frequency band overlaps between the first communication system and the second communication system;

[0153] The interference number determination module 102 is used to determine the number of interferences reported by each candidate terminal in at least one candidate terminal according to the CQI of the overlapping subband in the CSI-RS at multiple times;

[0154] The interfered subband determining module 103 is configured to determine an interfered subband in the overlapping subbands according to the number of times the overlapping subbands are interfered reported by each candidate terminal in at least one candidate terminal.

[0155] The interference detection device provided in the embodiment of the present invention specifically executes the above method embodiment process. For details, please refer to the content of the above interference detection method embodiment, which will not be repeated here. The interference detection device provided in the embodiment of the present invention can avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single moment by receiving the CSI-RS at multiple times reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping subband in the first communication system, so as to lay the foundation for solving the problem of low throughput caused by the interference subband, improve the service level of the network, and after receiving the CSI-RS, first determine the number of times the overlapping subband of each candidate terminal is interfered, lay the foundation for the subsequent elimination of candidate terminals with normal signal status, and further improve the accuracy of the subsequent determination of the interfered subband in the overlapping subband.

[0156] For the specific execution process of the signal receiving module 101, the interference number determination module 102 and the interfered subband determination module 103, please refer to the records in the above method embodiment. The division of modules in the embodiment of the present application is schematic, which is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application can be integrated in one processor, or it can exist physically separately, or two or more modules can be integrated in one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules.

[0157] Based on the above embodiments, as an optional embodiment, the interference detection device further includes:

[0158] A candidate terminal determination module, configured to determine a terminal located at an edge of a coverage area of ​​the first communication system as a candidate terminal;

[0159] The configuration information sending module is used to send configuration information to at least one candidate terminal, where the configuration information is used for at least one candidate terminal to measure and report CSI-RS.

[0160] Based on the above embodiments, as an optional embodiment, the interference detection device further includes:

[0161] The sliding grouping module is used to group the received CSI-RS by using a sliding window mechanism, and each group of CSI-RS includes CSI-RS at multiple time points reported by at least one candidate terminal.

[0162] Based on the above embodiments, as an optional embodiment, the interference number determination module is specifically used for: for the CSI-RS at any time reported by each candidate terminal, if the value of the CQI of the overlapping subband in the CSI-RS at any time meets the preset conditions, it is determined that the overlapping subband is interfered once.

[0163] Based on the above embodiments, as an optional embodiment, the interfered subband determination module includes:

[0164] a target terminal determination unit, configured to, for each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered with to the total number of CQIs of the overlapping subband reported by at least one candidate terminal is greater than a first preset threshold, take the candidate terminal as the target terminal;

[0165] The judging unit is used to calculate, for any one of the overlapping subbands, a second ratio of the number of times any one of the overlapping subbands reported by all target terminals is interfered with to the total number of CQIs of the overlapping subbands reported by all target terminals, and judge whether any one of the overlapping subbands is an interfered subband according to the second ratio.

[0166] Based on the above embodiments, as an optional embodiment, the judgment unit is specifically configured to: if the second ratio is greater than a second preset threshold, determine that any subband is an interfered subband

[0167] Based on the above embodiments, as an optional embodiment, the judgment unit is specifically used to: determine the value interval of the second ratio, and determine the interference level of any subband according to the correspondence between the value interval and the interference level in advance, and the number of interference levels is at least two.

[0168] Based on the above embodiments, as an optional embodiment, the interference detection device further includes:

[0169] Construct a linked list of candidate terminals, the linked list including the index of the reporting time, the index of the overlapping subband, and the number of times the overlapping subband reported by the candidate terminal is interfered;

[0170] The interfered subband determining module is specifically used to determine the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by the candidate terminal in the linked list of at least one candidate terminal is interfered.

[0171] An electronic device is provided in an embodiment of the present application, and the electronic device includes: a memory and a processor; at least one program, stored in the memory, for being executed by the processor, and compared with the prior art, it can achieve: by receiving CSI-RS at multiple times reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping sub-band in the first communication system, it is possible to avoid the problem of low accuracy caused by determining the interfered sub-band based on the CQI at a single time, lay the foundation for solving the problem of low throughput caused by the interfering sub-band, and improve the service level of the network, and after receiving the CSI-RS, first determine the number of times the overlapping sub-band of each candidate terminal is interfered, lay the foundation for the subsequent elimination of candidate terminals with normal signal status, and further improve the accuracy of the subsequent determination of the interfered sub-band in the overlapping sub-band.

[0172] In an alternative embodiment, an electronic device is provided, such as Fig. 9 As shown, Fig. 9 The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may also include a transceiver 4004. It should be noted that in actual applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present application.

[0173] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0174] The bus 4002 may include a path to transmit information between the above components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0175] The memory 4003 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0176] The memory 4003 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 4001. The processor 4001 is used to execute the application code stored in the memory 4003 to implement the contents shown in the above method embodiment.

[0177] The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer is run on a computer, the computer can execute the corresponding content in the aforementioned method embodiment. Compared with the prior art, by receiving CSI-RS at multiple times reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping subband in the first communication system, it is possible to avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single time, lay the foundation for solving the problem of low throughput caused by the interference subband, improve the service level of the network, and after receiving the CSI-RS, first determine the number of times the overlapping subband of each candidate terminal is interfered, lay the foundation for the subsequent elimination of candidate terminals with normal signal status, and further improve the accuracy of the subsequent determination of the interfered subband in the overlapping subband.

[0178] The embodiment of the present application provides a computer program, which includes a computer instruction, which is stored in a computer-readable storage medium. When a processor of a computer device reads the computer instruction from the computer-readable storage medium, the processor executes the computer instruction, so that the computer device executes the content shown in the above method embodiment. Compared with the prior art, by receiving CSI-RS at multiple times reported by at least one candidate terminal, and the CSI-RS includes the CQI of each overlapping subband in the first communication system, it is possible to avoid the problem of low accuracy caused by determining the interfered subband based on the CQI at a single time, lay a foundation for solving the problem of low throughput caused by the interference subband, improve the service level of the network, and after receiving the CSI-RS, first determine the number of times the overlapping subband of each candidate terminal is interfered, lay a foundation for the subsequent elimination of candidate terminals with normal signal status, and further improve the accuracy of the subsequent determination of the interfered subband in the overlapping subband.

[0179] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0180] The above are only some embodiments 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 should also be regarded as the scope of protection of the present invention.

Claims

1. An interference detection method, characterized in that: include: Receive a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal, where the candidate terminal is located at the edge of the coverage of the first communication system, and the CSI-RS includes a channel quality indication CQI of an overlapping subband in the first communication system; the overlapping subband is a subband whose frequency band overlaps between the first communication system and the second communication system; Determine, according to the CQIs of the overlapping subbands in the CSI-RS at the multiple time instants, the number of times the overlapping subband reported by each candidate terminal in the at least one candidate terminal is interfered; Determine the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in the at least one candidate terminal; The determining, according to the number of times the overlapping subband is interfered reported by each candidate terminal in the at least one candidate terminal, the interfered subband in the overlapping subband includes: For each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered to the total number of CQIs of the overlapping subband reported by the at least one candidate terminal is greater than a first preset threshold, the candidate terminal is used as a target terminal; For any one of the overlapping subbands, a second ratio of the number of times the any one of the subbands reported by all the target terminals is interfered with to the total number of CQIs of the overlapping subbands reported by all the target terminals is calculated, and whether the any one of the subbands is the interfered subband is determined based on the second ratio.

2. The interference detection method according to claim 1, characterized in that: The receiving of a channel state information reference signal CSI-RS at multiple time points reported by at least one candidate terminal also includes: Determine a terminal located at an edge of the coverage of the first communication system as the candidate terminal; Configuration information is sent to the at least one candidate terminal, where the configuration information is used by the at least one candidate terminal to measure and report the CSI-RS.

3. The interference detection method according to claim 1 or 2, characterized in that: The determining of the number of moments when the overlapping subbands reported by each candidate terminal of the at least one candidate terminal are interfered with also includes: The received CSI-RS are grouped by a sliding window mechanism, and each group of CSI-RS includes the CSI-RS at the multiple time moments reported by the at least one candidate terminal.

4. The interference detection method according to claim 1, characterized in that: The determining, according to the CQIs of the overlapping subbands in the CSI-RSs at the multiple moments, the number of times the overlapping subbands reported by each candidate terminal in the at least one candidate terminal are interfered includes: For the CSI-RS at any time reported by each candidate terminal, if the value of the CQI of the overlapping subband in the CSI-RS at any time meets a preset condition, it is determined that the overlapping subband is interfered once.

5. The interference detection method according to claim 1, characterized in that: The determining, according to the second ratio, whether any one of the sub-bands is the interfered sub-band comprises: If the second ratio is greater than a second preset threshold, the any one subband is determined to be the interfered subband.

6. The interference detection method according to claim 1, characterized in that: The determining, according to the second ratio, whether any one of the sub-bands is the interfered sub-band comprises: Determine a value interval in which the second ratio exists, and determine the interference level of the any one subband according to a pre-established correspondence between the value interval and the interference level, where the number of the interference levels is at least two.

7. The interference detection method according to claim 1, characterized in that: Determining the interfered subband in the overlapping subband according to the number of times the overlapping subband reported by each candidate terminal in the at least one candidate terminal is interfered, wherein the method further includes: Constructing a linked list of the candidate terminals, the linked list including an index of a reporting time, an index of an overlapping subband, and a number of times the overlapping subband is interfered with, as reported by the candidate terminals; The determining, according to the number of times that the overlapping subband is interfered reported by each candidate terminal in the at least one candidate terminal, the interfered subband in the overlapping subband comprises: According to the number of times that the overlapping sub-bands reported by the candidate terminals in the linked list of the at least one candidate terminal are interfered, the interfered sub-bands in the overlapping sub-bands are determined.

8. An interference detection device, characterized in that: include: A signal receiving module, configured to receive a channel state information reference signal CSI-RS at multiple times reported by at least one candidate terminal, wherein the candidate terminal is located at the edge of the coverage of the first communication system, and the CSI-RS includes a channel quality indication CQI of an overlapping subband in the first communication system; the overlapping subband is a subband whose frequency band overlaps between the first communication system and the second communication system; An interference number determination module, configured to determine the number of interferences reported by each candidate terminal in the at least one candidate terminal according to the CQI of the overlapping subband in the CSI-RS at the multiple moments; An interfered subband determination module, configured to determine the interfered subband in the overlapping subband according to the number of times the overlapping subband is interfered reported by each candidate terminal in the at least one candidate terminal; The interfered subband determination module is specifically used for: For each candidate terminal, if a first ratio of the number of times the overlapping subband reported by the candidate terminal is interfered to the total number of CQIs of the overlapping subband reported by the at least one candidate terminal is greater than a first preset threshold, the candidate terminal is used as a target terminal; For any one of the overlapping subbands, a second ratio of the number of times the any one of the subbands reported by all the target terminals is interfered with to the total number of CQIs of the overlapping subbands reported by all the target terminals is calculated, and whether the any one of the subbands is the interfered subband is determined based on the second ratio.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the interference detection method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute the steps of the interference detection method according to any one of claims 1 to 7.

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