Method and device for detecting and avoiding interference signal

Abstract

The embodiment of the invention provides an interference signal detection and avoidance method and device, and the method comprises the steps: starting an interference avoidance function of all communication cells to be subjected to interference detection, transmitting an interference signal output instruction to the communication cells, transmitting an interference detection instruction to a sensing cell, and transmitting an interference signal output instruction to the sensing cell; and obtaining an interference detection result of the sensing cell for detecting the communication cell, and closing the interference avoidance function of the corresponding communication cell according to the interference detection result. According to the method and the device, the problems of one-by-one serial instruction sending to the communication cell and the sensing cell, a large number of sent instructions and long waiting time of the instructions are solved, and the effects of reducing instruction sending and improving operation efficiency are further achieved.

Description

Technical Field

[0001] The present invention relates to the field of communications, and more specifically, to a method and apparatus for detecting and avoiding interference signals. Background Technology

[0002] In a hybrid network environment of communication and sensing cells, the two cells share the same communication channel, which can lead to interference between communication and sensing signals. Specifically, sensing cells transmit and receive sensing signals during the first seven symbols of subframes D0 and D5 (Orthogonal Frequency Division Multiplexing, OFDM). If communication cells are also transmitting signals during these periods, the sensing signals will be interfered with by the communication signals. Summary of the Invention

[0003] This invention provides a method and apparatus for detecting and avoiding interference signals, which at least solves the problem in related technologies that it is necessary to send instructions to communication cells and sensing cells one by one in a serial manner, resulting in a large number of instructions to be sent and long waiting time between instructions.

[0004] According to an embodiment of the present invention, a method for detecting and avoiding interference signals is provided, comprising: activating the interference avoidance function of all communication cells to be detected for interference; sending an interference signal output instruction to the communication cells, wherein the interference signal output instruction includes first timing arrangement information for the communication cells to send interference signals, so that the communication cells send their respective interference signals at corresponding times according to the first timing arrangement information; sending an interference detection instruction to a sensing cell, wherein the interference detection instruction includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection at the time when the communication cells send interference signals according to the second timing arrangement information; obtaining the interference detection result of the sensing cell detecting the communication cells; and deactivating the interference avoidance function of the corresponding communication cells according to the interference detection result.

[0005] According to another embodiment of the present invention, an interference signal detection and avoidance device is provided, comprising: an activation module for activating the interference avoidance function of all communication cells to be detected for interference; a first transmission module for sending an interference signal output instruction to the communication cells, wherein the interference signal output instruction includes first timing arrangement information for the communication cells to send interference signals, so that the communication cells send their respective interference signals at corresponding times according to the first timing arrangement information; a second transmission module for sending an interference detection instruction to a sensing cell, wherein the interference detection instruction includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection at the time when the communication cell sends interference signals according to the second timing arrangement information; and a first acquisition module for acquiring the interference detection result of the sensing cell detecting the communication cells, and deactivating the interference avoidance function of the corresponding communication cells according to the interference detection result.

[0006] According to yet another embodiment of the present invention, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to perform the steps in any of the above method embodiments when it is run.

[0007] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0008] According to yet another embodiment of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0009] By using this invention, the interference signal transmitted by the communication cell is time-sequenced, and the sensing cell is instructed to detect the interference signal according to the corresponding time sequence. Based on the obtained detection results, the interference avoidance function of the corresponding communication cell is turned off. Therefore, the problem of needing to send instructions to the communication cell and the sensing cell one by one in the related technology, resulting in a large number of instructions to be sent and a long waiting time between instructions, can be solved, thereby reducing the number of instructions sent and improving the operational efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a network architecture according to an embodiment of the present invention;

[0011] Figure 2 This is a flowchart of a method for detecting and avoiding interference signals according to an embodiment of the present invention;

[0012] Figure 3 This is another flowchart of the method for detecting and avoiding interference signals according to an embodiment of the present invention;

[0013] Figure 4 This is a structural block diagram of an interference signal detection and avoidance device according to an embodiment of the present invention. Detailed Implementation

[0014] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0016] In related technologies, to identify communication cells that need to be avoided, the current method is to send interference signal output commands to all communication cells surrounding the sensing cell one by one, and then send interference signal detection commands to the sensing cell. The disadvantage of this method is that it requires sending commands serially to both the communication cells and the sensing cell, resulting in a large number of commands and long waiting times between commands. To solve the above problems, this invention provides a method or apparatus for detecting and avoiding interference signals.

[0017] Figure 1 This is a schematic diagram of a network architecture according to an embodiment of the present invention. This embodiment of the present invention can be run on... Figure 1 In the network architecture shown, such as Figure 1 As shown, the network architecture includes: a network management side and a base station side. The base station side includes the network elements where the communication cell is located and the network elements where the sensing cell is located. It should be noted that... Figure 1 This embodiment only illustrates one possible network architecture. The network architecture of this embodiment could also include only the base station side, which includes the network element containing the communication cell and the network element containing the sensing cell. The application scenario of this embodiment could be a New Radio (NR) base station network management system, or multiple NR communication cells and sensing cells under the network management system.

[0018] This embodiment provides a method for detecting and avoiding interference signals operating on the above-described network architecture. Figure 2 This is a flowchart of an interference signal detection and avoidance method according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0019] Step S202: Enable the interference avoidance function for all communication cells to be subjected to interference detection;

[0020] Step S204: Send an interference signal output instruction to the communication cell, wherein the interference signal output instruction includes first timing arrangement information for the communication cell to send interference signals, so that the communication cell sends its own interference signals at the corresponding time according to the first timing arrangement information;

[0021] Step S206: Send an interference detection instruction to the sensing cell. The interference detection instruction includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection according to the second timing arrangement information at the time when the communication cell sends the interference signal.

[0022] Step S208: Obtain the interference detection results of the sensing cell on the communication cell, and disable the interference avoidance function of the corresponding communication cell according to the interference detection results.

[0023] In this embodiment, after the last communication cell has completed outputting the interference signal, the interference detection result of the sensing cell on the communication cell can be obtained after a predetermined time period. The interference avoidance function for communication cells whose interference detection result is less than or equal to a first predetermined interference threshold can be optionally disabled.

[0024] In one exemplary embodiment, before performing step S204, the method includes: arranging the timing of the transmission of interference signals by the communication cell to be subjected to interference detection.

[0025] In this embodiment, the correspondence between the time when each communication cell sends an interference signal and each designated radio frame number can be arranged, wherein the designated radio frame number serves as the start point for the corresponding communication cell to send an interference signal on the radio frame.

[0026] The first timing sequence information includes: the designated radio frame number and the interference signal detection period. The second timing sequence information includes: the total number of communication cells, the designated radio frame number, and the interference signal detection period.

[0027] In an exemplary embodiment, step S204 includes: instructing the communication cell, based on the first timing arrangement information carried in the interference signal output instruction, to transmit interference signals on radio frames starting from the corresponding designated radio frame number and according to the corresponding interference signal detection period. The number of radio frames from which the interference signal is transmitted corresponds to the duration of the interference signal transmission by the communication cell. For example, if the communication cell can complete the transmission of the interference signal on one radio frame under a certain interference signal detection period, then the transmission duration of the corresponding interference signal is the duration of one radio frame, equivalent to the communication cell completing the transmission of the interference signal on one radio frame corresponding to the initial designated radio frame number. If the communication cell needs to complete the transmission of the interference signal on multiple radio frames under a certain interference signal detection period, then the transmission duration of the corresponding interference signal is the duration of multiple radio frames, equivalent to the communication cell needing to transmit the interference signal on the radio frame corresponding to the initial designated radio frame number, and also needing to transmit the interference signal on multiple radio frames following the radio frame corresponding to the initial designated radio frame number. Under different interference signal detection periods, the communication cell will transmit interference signals on different numbers of radio frames.

[0028] In an exemplary embodiment, step S206 includes: instructing the sensing cell, based on the second timing arrangement information carried in the interference detection instruction, to detect the interference signal transmitted by each communication cell according to the corresponding interference signal detection period, using the corresponding specified radio frame number as the starting point. Since the communication cell transmits interference signals on a different number of radio frames under different interference signal detection periods, the sensing cell also needs to detect the interference signal on the corresponding radio frames.

[0029] It should be noted that, in the embodiments of the present invention, the interference signal detection period represents the time interval between sending or detecting interference signals. Therefore, depending on the actual time interval used for detecting interference signals, there can be multiple interference signal detection periods. The specific type of interference signal detection period used can be determined according to the actual scenario requirements, and the present invention does not impose any limitations on this.

[0030] In an exemplary embodiment, the interference signal detection period can be embodied in a detection mode or included within a detection mode. The form of the interference signal detection period can be determined based on the specific practical scenario. For example, when the interference signal detection period can be embodied in a detection mode, the detection mode can include a periodic detection mode and a continuous detection mode, the difference between which lies in the time interval between transmitting or detecting the interference signal. When the interference signal detection period is included within a detection mode, the detection mode can also include a periodic detection mode and a continuous detection mode, the difference being the time interval between transmitting or detecting the interference signal.

[0031] In one exemplary embodiment, before performing step S204, the method includes: obtaining the operating radius and determining all communication cells to be subjected to interference detection located within the operating radius of the sensing cell.

[0032] In an exemplary embodiment, after performing step S204, the method includes: sending a sensing cell noise floor detection command to the sensing cell to obtain the sensing cell noise floor value; and sending an interference signal output command to the communication cell if the sensing noise floor value is less than a second predetermined interference threshold.

[0033] In one exemplary embodiment, the method further includes: if the perceived noise floor value is greater than or equal to a second predetermined interference threshold, disabling the interference avoidance function of all communication cells to be detected for interference, and resetting a larger second predetermined interference threshold or a larger operating radius.

[0034] In an exemplary embodiment, the entity performing the above steps may be a network management device or a network element where the sensing cell is located.

[0035] For example, when the executing entity is a network management device, it could be:

[0036] The network management device instructs the network element where the communication cell is located to enable the interference avoidance function of all communication cells, and sends a sensing cell noise floor detection command to the network element where the sensing cell is located to obtain the sensing cell noise floor value, detect whether the sensing noise floor value is less than the second predetermined interference threshold, and if the sensing noise floor value is less than the second predetermined interference threshold, sends an interference signal output command to the network element where the communication cell is located.

[0037] The network management device schedules the timing of interference signals sent by the communication cells to be detected, and arranges the correspondence between the time when each communication cell sends interference signals and each specified radio frame number, where the specified radio frame number serves as the start of the corresponding communication cell sending interference signals on the radio frame.

[0038] The network management device, based on the first timing arrangement information carried in the interference signal output command, instructs the communication cell to transmit interference signals on the radio frame, starting with the corresponding designated radio frame number and according to the corresponding interference signal detection period. The first timing arrangement information includes: the designated radio frame number and the interference signal detection period. Based on the second timing arrangement information carried in the interference detection command, the network management device instructs the sensing cell to detect the interference signals transmitted by each communication cell, starting with the corresponding designated radio frame number and according to the corresponding interference signal detection period. The second timing arrangement information includes: the total number of communication cells, the designated radio frame number, and the interference signal detection period.

[0039] The network management device calls the interference detection result instruction to the network element where the sensing cell is located, obtains the interference detection result of the sensing cell on the communication cell, and instructs the network element where the communication cell is located to disable the interference avoidance function of the communication cell whose interference detection result is less than or equal to the first predetermined interference threshold.

[0040] For example, when the implementing entity is the network element where the sensing cell is located, it could be:

[0041] The network element where the sensing cell is located instructs the network element where the communication cell is located to enable the interference avoidance function of all communication cells, instructs the sensing cell to perform noise floor detection to obtain the sensing noise floor value of the sensing cell, detects whether the sensing noise floor value is less than the second predetermined interference threshold, and sends an interference signal output command to the network element where the communication cell is located if the sensing noise floor value is less than the second predetermined interference threshold.

[0042] The network element where the sensing cell is located arranges the timing of the interference signals sent by the communication cell to be detected, and arranges the correspondence between the time when each communication cell sends interference signals and each specified radio frame number, where the specified radio frame number serves as the start of the corresponding communication cell sending interference signals on the radio frame.

[0043] The network element containing the sensing cell instructs the communication cell to transmit interference signals on the radio frame, starting with the corresponding designated radio frame number and following the corresponding interference signal detection period, based on the first timing arrangement information carried in the interference signal output command. The first timing arrangement information includes: the designated radio frame number and the interference signal detection period. The network element containing the sensing cell then instructs the sensing cell, based on the second timing arrangement information carried in the interference detection command, to detect the interference signals transmitted by each communication cell, starting with the corresponding designated radio frame number and following the corresponding interference signal detection period. The second timing arrangement information includes: the total number of communication cells, the designated radio frame number, and the interference signal detection period.

[0044] The sensing cell actively reports the interference detection results of the communication cell so that the network element where the sensing cell is located can obtain the interference detection results and instruct the network element where the communication cell is located to disable the interference avoidance function for communication cells whose detection results are less than or equal to a predetermined interference threshold.

[0045] Through the above steps, the timing arrangement of the communication cell's interference signal transmission command is realized, and the sensing cell is made to synchronously perform interference signal detection according to the timing arrangement. Furthermore, the cooperation between the sensing cell's noise floor detection command, interference detection result command, and other commands reduces the number of commands sent. This solves the problem in related technologies that it is necessary to send commands to the communication cell and the sensing cell one by one in sequence, resulting in a large number of commands to be sent and long waiting time between commands. This improves operational efficiency and reduces the waiting time between commands.

[0046] In a 5G NR system, a Radio Frame (RF) is the basic time unit used to organize wireless communication in a 5G network. An RF is divided into 10 subframes, each 1ms long, and a single radio frame is 10ms long. The System Frame Number (SFN) is a periodic counter used to identify each radio frame. The SFN has a fixed period of 1024, meaning it repeats every 1024 radio frames. The SFN is used for synchronization and event timing in 5G systems, and is crucial for network operation and device synchronization. The SFN ensures that all devices in the network are synchronized to the same time reference, which is essential for operations such as scheduling, resource allocation, and signal synchronization. Through the SFN, devices know when and how to communicate with the network, and how to interpret received signals.

[0047] Figure 3This is another flowchart of the interference signal detection and avoidance method according to an embodiment of the present invention. In this embodiment, 1024 radio frames are used to form a System Super Frame (SSF), with a length of 10.24 seconds. A System Super Frame Number (SSFN) is used to identify the sequence number of the system superframe; it is a cyclic counter modulo 1024, i.e., a value that cycles from 0 to 1023. The length of 1024 system superframes is approximately 2.9 hours.

[0048] It should be noted that interference signals can be transmitted directly using radio frames, and the SFN can be used as a periodic counter for each radio frame. Alternatively, a system superframe can be composed of 2048 or 3072 radio frames, and the SSFN can also be a cyclic counter modulo 2048 or 3072. All of the above methods can implement the embodiments of the present invention, and the present invention is not limited thereto. This embodiment uses 1024 radio frames to form a system superframe, and an SSFN modulo 1024 as an example.

[0049] In this embodiment, the sensing cell can operate with a period of 2560ms, and the communication cell can send interference signals at different time intervals.

[0050] For example, the communication cell transmits interference signals according to the first time interval as follows:

[0051] An interference signal is transmitted once in the last 80ms of the 2560ms interval (the last 80ms is used for MTS calibration and not for sensing services). This method does not affect normal sensing services. Since a communication cell needs to transmit interference signals in 32 beams, it takes 2560ms * 32 = 8 system superframes to complete the transmission of interference signals for all beams of a communication cell. This can also be understood as the communication cell transmitting interference signals on multiple radio frames, where every 1024 radio frames constitutes one system superframe. 8 system superframes correspond to 8 * 1024 = 8192 radio frames. Therefore, if the communication cell transmits interference signals according to the first time interval, it needs to transmit interference signals on 8192 radio frames, with the transmission duration being the duration of 8192 radio frames. In this method, the sensing cell will correspondingly use a periodic detection mode to detect the interference signals transmitted by the communication cell.

[0052] For example, the communication cell transmits interference signals according to the second time interval as follows:

[0053] Interference signals can be transmitted every 80ms within a 2560ms interval, meaning 32 interference signals can be transmitted in 2560ms. Thus, the 32 beams of such a communication cell only require 1 / 4 of a system superframe to complete the transmission, but this method will affect normal sensing services. Alternatively, it can be understood that the communication cell transmits interference signals on multiple radio frames, where every 1024 radio frames constitutes a system superframe. 1 / 4 of a system superframe corresponds to 1 / 4 * 1024 = 256 radio frames. Therefore, if the communication cell transmits interference signals according to the second time interval, it needs to transmit interference signals on 256 radio frames, with the transmission duration being the length of 256 radio frames. In this method, the sensing cell will correspondingly adopt a continuous detection mode to detect the interference signals transmitted by the communication cell.

[0054] It should be noted that the periodic detection mode and the continuous detection mode in this embodiment are different in terms of the time interval for detecting interference signals. However, they function the same as the interference signal detection period in the previous embodiment, both representing the time interval for detecting interference signals.

[0055] It should be noted that the beam can be determined according to the actual scenario requirements or the base station configuration. Under different beams, the number of times the communication cell transmits the interference signal will vary, and this invention does not impose any limitations. In this embodiment, taking the transmission of the interference signal with 32 beams as an example, it is necessary to transmit the interference signal 32 times to complete the transmission.

[0056] The frame structure clock synchronization mechanism in wireless communication serves as the benchmark for timing and synchronization among all NR base stations. It ensures a high degree of consistency between the time frames of all communication and sensing base stations, thereby achieving precise alignment and collaborative operation of the entire network in the time dimension. To enable all communication cells to serially transmit interference signals in the fastest possible way, all communication cells can be numbered, and each cell can be instructed to continuously transmit interference signals according to different system superframe numbers. Simultaneously, sensing cells are instructed to detect interference signals according to the corresponding timing sequence, mapping them one-to-one with the communication cell numbers. This eliminates the need to issue instructions to each communication cell individually.

[0057] In this embodiment, the execution entity is taken as a network management device as an example. Figure 3 As shown, the process includes the following steps:

[0058] Step S301: Obtain the sensing cell identifier, operating radius r, and second predetermined interference threshold. The sensing cell identifier, operating radius r, and second predetermined interference threshold can all be set by the user. The default value for the operating radius r is 5km, indicating that the surrounding communication cells of the sensing cell are searched within an operating radius of 5km, centered on the sensing cell.

[0059] Step S302: Determine the communication cells around the sensing cell that require interference detection.

[0060] Network management equipment can first identify sensing cells based on the acquired sensing cell identifier, and then use tools such as geographic information systems (GIS) to obtain surrounding communication cells based on the sensing cell's latitude and longitude coordinates and operating radius r. Next, it obtains the configuration parameters of the surrounding communication cells and filters out those requiring interference detection based on these parameters. Configuration parameters can include frequency points, bandwidth, the number of Remote Radio Unit (RRU) channels used, the number of antennas, and the on / off status of interference avoidance functions. For example, communication cells requiring interference detection can be filtered out using at least one of the following methods:

[0061] 1. If the surrounding communication cells and sensing cells are on the same frequency and have the same bandwidth, and the number of antennas is a predetermined value, such as 8T, 64T, or 128T, then the surrounding communication cells need to be filtered out for subsequent interference detection; otherwise, they need to be excluded.

[0062] 2. If the surrounding communication cells have disabled their interference avoidance function, then the surrounding communication cells need to be filtered out for subsequent interference detection; otherwise, they need to be excluded.

[0063] Step S303: Instruct the network element where the communication cell is located to enable the interference avoidance function for all communication cells filtered in step S302.

[0064] Step S304: Send a sensing cell noise floor detection command to the network element where the sensing cell is located to obtain the sensing cell's sensing noise floor value and the current system superframe number. The current system superframe number is used in subsequent steps to arrange the correspondence between the time when each communication cell sends interference signals and each specified system superframe number, so that each communication cell uses its own specified system superframe number as the starting point for sending interference signals and sends interference signals on one or more system superframes.

[0065] Step S305: Detect whether the perceived noise floor value is less than the second predetermined interference threshold.

[0066] If the perceived noise floor value is less than the second predetermined interference threshold, an interference signal output command is sent to the network element where the communication cell is located.

[0067] If the perceived noise floor value is greater than or equal to the second predetermined interference threshold, it indicates that the noise floor interference is too high. It is necessary to instruct all communication cells in step S303 to turn off the interference avoidance function and reacquire the operating radius r and / or the second predetermined interference threshold (the user needs to set a higher predetermined interference threshold value or a larger operating radius r). The above steps are then re-executed starting from step S301.

[0068] Step S306: Activate the interference detection function of the sensing cell.

[0069] The network element containing the sensing cell sends a sensing cell interference detection command. The input parameters include: a specified radio frame number, the total number of communication cells, and the interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the command could also include the following parameters: a specified system superframe number, the total number of communication cells, and the interference signal detection period. The network element containing the sensing cell returns a success or failure result. The sensing cell can determine the specific time to begin detecting interference signals from the communication cells using the received specified system superframe number. This specified system superframe number can be the first system superframe number from which the communication cell sends the interference signal, or it can be understood as an initial specified system superframe number. The interference signal detection period can indicate that it takes 8 system superframes or 1 / 4 of a system superframe for a communication cell to complete the transmission of an interference signal. The total number of communication cells combined with the received specified system superframe number indicates which system superframe the sensing cell needs to detect, as well as the start and end points of the system superframe number for each communication cell.

[0070] The designated system superframe number received by the sensing cell (i.e., the designated system superframe number of the first communication cell to transmit interference signals, or the initial designated system superframe number) can be obtained in the following way:

[0071] The designated system superframe number received by the sensing cell = (the SSFN at the current moment in step S304 + the superframe number calculated from the network management device's instruction transmission time) mod 1024

[0072] Step S307: Start transmitting interference signals for the communication cell.

[0073] For each communication cell, a communication cell interference signal output command is sent to inform the communication cell to send an interference signal at a certain time. This command includes parameters such as: a specified radio frame and an interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the input parameters are equivalent to the specified system superframe number, SSFN offset, and interference signal detection period. The network element containing the communication cell returns a success or failure result. The communication cell can use the specified system superframe number as the start of the interference signal it sends. The interference signal detection period can be used to determine the time interval at which the interference signal is sent. The SSFN offset can be used to determine whether there is an offset in the SSFN start corresponding to the interference signal sent by the communication cell, and the specific offset amount. The SSFN offset is 0 in periodic detection mode, and in continuous detection mode, this value is cyclically set in the interference signal output command in the order of 0, 1, 2, 3. Each communication cell has a corresponding SSFN offset. For example, if the SSFN offset of a certain communication cell is 1 in continuous detection mode, it means that the SSFN of the communication cell transmitting interference signals has an offset of 1 / 4 system superframe.

[0074] Each communication cell is sequentially numbered 0, 1, 2... The specified system superframe number of the k-th communication cell can be obtained in one of the following ways:

[0075] Periodic detection mode: The initial specified system superframe number obtained in step S306 + 8*k (k = 0, 1, 2...)

[0076] Continuous detection mode: The initial specified system superframe number obtained in step S306 + [k / 4] (k = 0, 1, 2...) (square brackets indicate rounding down)

[0077] Step S308: Wait for the scheduled time period.

[0078] If the last communication cell has completed its interference signal output, and the interference detection result of the sensing cell on the communication cell needs to be obtained after a predetermined time period, then in periodic detection mode, if the last communication cell does not finish transmitting the interference signal until system superframe 43, then the interference detection result can be obtained after waiting for one system superframe. Similarly, in continuous detection mode, if the last communication cell does not finish transmitting the interference signal until system superframe 24.25, then the interference detection result can be obtained after waiting for 0.75 system superframes.

[0079] Step S309: Obtain the interference detection results of the sensing cell.

[0080] The command to retrieve interference detection results for the sensing cell is invoked on the network element containing the sensing cell, thereby retrieving interference detection results for all communication cells. The interference detection results can be in the form of a list as follows:

[0081] Communication cell number 0, interference value

[0082] Communication cell number 1, interference value

[0083] Communication cell number 2, interference value ...

[0085] Step S310: Disable the interference avoidance function for communication cells whose detection results are less than or equal to the first predetermined interference threshold.

[0086] If the interference value obtained in step S309 is less than or equal to the first predetermined interference threshold, it indicates that the interference from the communication cell to the sensing cell is very small, and the interference avoidance function can be turned off. In this embodiment, the values ​​of the first predetermined interference threshold and the second predetermined interference threshold can be the same or different.

[0087] By performing the above steps, the interference signals transmitted by the communication cells are time-series arranged, and the interference value data of each beam of all communication cells can be obtained at one time. This enables fast and accurate detection and avoidance of interference signals in mixed networking scenarios of communication cells and sensing cells. It solves the problem in related technologies that it is necessary to send instructions to communication cells and sensing cells one by one in sequence, resulting in a large number of instructions to be sent and long waiting time between instructions. This achieves the effect of reducing the number of instructions sent and improving operational efficiency.

[0088] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0089] This embodiment also provides an interference signal detection and avoidance device, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0090] Figure 4 This is a structural block diagram of an interference signal detection and avoidance device according to an embodiment of the present invention, such as... Figure 4 As shown, the device 40 includes:

[0091] Module 42 is enabled to enable the interference avoidance function for all communication cells to be subjected to interference detection.

[0092] The first transmitting module 44 is used to transmit an interference signal output instruction to the communication cell. The interference signal output instruction includes first timing arrangement information for the communication cell to transmit interference signals, so that the communication cell transmits its own interference signals at the corresponding time according to the first timing arrangement information.

[0093] The second sending module 46 is used to send an interference detection instruction to the sensing cell. The interference detection instruction includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection according to the time when the communication cell sends the interference signal in accordance with the second timing arrangement information.

[0094] The first acquisition module 48 is used to acquire the interference detection results of the sensing cell on the communication cell, and to disable the interference avoidance function of the corresponding communication cell according to the interference detection results.

[0095] In one exemplary embodiment, the first acquisition module 48 includes:

[0096] The shutdown submodule is used to disable the interference avoidance function for communication cells whose interference detection results are less than or equal to a first predetermined interference threshold.

[0097] In one exemplary embodiment, the device 40 includes:

[0098] The orchestration module is used to orchestrate the timing of interference signals sent by the communication cell to be detected.

[0099] In one exemplary embodiment, the orchestration module includes:

[0100] The orchestration submodule is used to orchestrate the correspondence between the time when each communication cell transmits interference signals and each specified radio frame number, where the specified radio frame number serves as the start point for the corresponding communication cell to transmit interference signals on the radio frame.

[0101] In an exemplary embodiment, the first timing arrangement information includes: specifying the radio frame number and the interference signal detection period.

[0102] In one exemplary embodiment, the first transmitting module 44 includes:

[0103] The first transmitting submodule is used to instruct the communication cell to transmit interference signals on the radio frame starting with the corresponding specified radio frame number and according to the corresponding interference signal detection period, based on the first timing arrangement information carried in the interference signal output instruction.

[0104] In one exemplary embodiment, the second timing arrangement information includes: the total number of communication cells, the specified radio frame number, and the interference signal detection period.

[0105] In one exemplary embodiment, the second sending module 46 includes:

[0106] The second transmitting submodule is used to notify the sensing cell, based on the second timing arrangement information carried in the interference detection instruction, to detect the interference signals transmitted by each communication cell according to the corresponding interference signal detection period, using the corresponding specified radio frame number as the starting point.

[0107] In one exemplary embodiment, the device 40 includes:

[0108] The second acquisition module is used to acquire the operating radius and determine all communication cells to be subjected to interference detection within the operating radius of the sensing cell.

[0109] In one exemplary embodiment, the device 40 includes:

[0110] The third sending module is used to send a sensing cell noise floor detection command to the sensing cell in order to obtain the sensing cell noise floor value.

[0111] The first detection module is used to send an interference signal output command to the communication cell when the perceived noise floor value is less than the second predetermined interference threshold.

[0112] In one exemplary embodiment, the device 40 includes:

[0113] The second detection module is used to disable the interference avoidance function of all communication cells to be detected when the perceived noise floor value is greater than or equal to the second predetermined interference threshold, and reset a larger second predetermined interference threshold and / or a larger operating radius.

[0114] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0115] Example 1

[0116] In this embodiment, the network management device acts as the execution entity, using 1024 radio frames to form a system superframe. This means the communication cell can transmit interference signals on multiple radio frames. The duration of these multiple radio frames corresponds to the duration of the communication cell transmitting the interference signal and also to the duration of the sensing cell detecting the interference signal. In this embodiment, the communication cell transmits the interference signal using 32 beams, requiring 32 transmissions to complete the transmission.

[0117] In this embodiment, there is one sensing cell surrounded by three communication cells (a, b, c). The network management device numbers these three communication cells (a, b, c) as 0, 1, and 2, respectively. The network management device sends an interference detection command to the sensing cell. This command includes the following parameters: specified radio frame number, total number of communication cells, and interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the command could also include the following parameters: specified SSFN, total number of communication cells, and interference signal detection period. The network management device sends an interference detection command to the communication cells. This command includes the following parameters: specified radio frame, interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the command could also include the following parameters: specified SSFN, SSFN offset, and interference signal detection period. In this embodiment, the interference signal detection mode can be understood as periodic detection.

[0118] When the network management device invokes the noise floor detection command for the sensing cell, it obtains that the noise floor value is less than the interference threshold and the current SSFN is 16. Sending the interference detection command takes approximately 30 seconds, roughly equivalent to 3 system superframes. Therefore, the initial specified SSFN can be obtained by multiplying the current SSFN by the superframe number calculated from the command sending time (mod 1024), i.e., the initial SSFN is 20. The communication cell (ac) can then send interference signals according to the following system superframe numbers, and the sensing cell can detect interference signals according to the following system superframe numbers:

[0119] Communication cell A: Starting from system superframe 20, the interference signal is transmitted, i.e., 20 + 8 * 0 = 20. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times until system superframe 27 ends, at which point the SSFN offset is 0. Here, 20 is the initial designated system superframe number. According to the first time interval, it takes 8 system superframes to complete the transmission of the interference signal in one cycle. Communication cell A's number is 0, therefore, the designated system superframe number for communication cell A is 20 + 8 * 0 = 20. An SSFN offset of 0 indicates that the SSFN corresponding to the interference signal transmitted by communication cell A starts with no offset.

[0120] Communication cell b: Starting from system superframe 28, the interference signal is transmitted, i.e., 20 + 8 * 1 = 28. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times until system superframe 35 ends, at which point the SSFN offset is 0. Here, 20 is the initial designated system superframe number. According to the first time interval, it takes 8 system superframes to complete the transmission of the interference signal in one cycle. Communication cell b is numbered 1, therefore the designated system superframe number for communication cell b is 20 + 8 * 1 = 28. An SSFN offset of 0 indicates that the SSFN corresponding to the interference signal transmitted by communication cell b starts with no offset.

[0121] Communication cell c: Starting from system superframe 36, the interference signal is transmitted, i.e., 20 + 8 * 2 = 36. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times until system superframe 43 ends, at which point the SSFN offset is 0. Here, 20 is the initial designated system superframe number. According to the first time interval, it takes 8 system superframes to complete the transmission of the interference signal in one cycle. Communication cell c is numbered 0, therefore the designated system superframe number for communication cell c is 20 + 8 * 2 = 36. An SSFN offset of 0 indicates that the SSFN corresponding to the interference signal transmitted by communication cell c starts with no offset.

[0122] Sensing Cell: Interference signal detection begins from the initial designated SSFN, specifically from system superframe 20. Based on the detection mode, the sensing cell determines that it takes 8 system superframes for a communication cell to transmit an interference signal within one cycle, according to the first time interval. Given the total number of communication cells, detection continues until system superframe 43. Interference values ​​detected in system superframes 20-27 correspond to interference in communication cell a, interference values ​​detected in system superframes 28-35 correspond to interference in communication cell b, and interference values ​​detected in system superframes 36-43 correspond to interference in communication cell c.

[0123] Example 2

[0124] In this embodiment, the network management device is the executing entity. A system superframe is composed of 1024 radio frames. This means the communication cell can transmit interference signals on multiple radio frames. The duration of these multiple radio frames corresponds to the duration of the communication cell transmitting the interference signal and also to the duration of the sensing cell detecting the interference signal. In this embodiment, the communication cell transmits the interference signal using 32 beams, requiring 32 transmissions to complete the transmission.

[0125] In this embodiment, there is one sensing cell surrounded by three communication cells (a, b, c). The network management device numbers these three communication cells (a, b, c) as 0, 1, and 2, respectively. The network management device sends an interference detection command to the sensing cell. This command includes parameters such as: specified radio frame number, total number of communication cells, and interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the command could also include the following parameters: specified SSFN, total number of communication cells, and interference signal detection period. The network management device sends an interference detection command to the communication cells. This command includes parameters such as: specified radio frame number and interference signal detection period. Since this embodiment uses 1024 radio frames to form a system superframe, the command could also include the following parameters: specified SSFN, SSFN offset, and interference signal detection period. In this embodiment, the interference signal detection mode can be understood as continuous detection.

[0126] When the network management device invokes the noise floor detection command for the sensing cell, it obtains that the noise floor value is less than the interference threshold and the current SSFN is 16. Sending the interference detection command takes approximately 30 seconds, roughly equivalent to 3 system superframes. Therefore, the initial specified SSFN can be obtained by multiplying the current SSFN by the superframe number calculated from the command sending time (mod 1024), i.e., the initial specified SSFN is 20. The communication cell (ac) can then send interference signals according to the following system superframe numbers, and the sensing cell can detect interference signals according to the following system superframe numbers:

[0127] Communication cell a: Starting from system superframe 20, the interference signal is transmitted, i.e., 20 + [0 / 4] = 20. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times, and the SSFN offset is 0. Here, 20 is the initial designated system superframe number. According to the second time interval, it takes 1 / 4 of a system superframe to continuously transmit the interference signal. The number of communication cell a is 0. Therefore, the designated system superframe number of communication cell a is 20 + [0 / 4] = 20. The SSFN offset of 0 indicates that the SSFN corresponding to the interference signal transmitted by communication cell a has no initial offset.

[0128] Communication cell b: Starting from system superframe 20, the interference signal is transmitted, i.e., 20 + [1 / 4] = 20. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times, and the SSFN offset is 1. Here, 20 is the initial designated system superframe number. According to the second time interval, it takes 1 / 4 of a system superframe to continuously transmit the interference signal. The number of communication cell b is 1. Therefore, the designated system superframe number of communication cell b is 20 + [1 / 4] = 20. The SSFN offset of 1 indicates that the SSFN corresponding to the interference signal transmitted by communication cell b has an offset of 1 / 4 of a system superframe.

[0129] Communication cell c: Starting from system superframe 20, the interference signal is transmitted, i.e., 20 + [2 / 4] = 20. Taking 32 beams as an example, the interference signal is transmitted a total of 32 times, and the SSFN offset is 2. Here, 20 is the initial designated system superframe number. According to the second time interval, it takes 1 / 4 of a system superframe to continuously transmit the interference signal. The number of communication cell c is 2, so the designated system superframe number of communication cell c is 20 + [2 / 4] = 20. The SSFN offset of 2 means that the SSFN corresponding to the interference signal transmitted by communication cell c has an offset of two 1 / 4 system superframes.

[0130] Sensing Cell: Interference signal detection begins from the initial SSFN, specifically from system superframe 20. Based on the detection mode, the sensing cell determines that a communication cell needs 1 / 4 of a system superframe to continuously transmit interference signals according to the second time interval. Given the total number of communication cells, it is known that detection must continue until system superframe 20.75. The interference values ​​detected in system superframes 20-20.25 correspond to interference in communication cell a, those in system superframes 20.25-20.5 correspond to interference in communication cell b, and those in system superframes 20.5-20.75 correspond to interference in communication cell c.

[0131] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0132] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0133] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0134] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0135] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0136] Embodiments of the present invention also provide a computer program product, including computer instructions that, when executed by a processor, implement the steps in any of the above method embodiments.

[0137] Embodiments of the present invention also provide a computer program product, including a non-volatile computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the methods in various embodiments of the present application.

[0138] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0139] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for detecting and avoiding interference signals, characterized in that, include: Enable the interference avoidance function for all communication cells to be subjected to interference detection; Send an interference signal output instruction to the communication cell, wherein the interference signal output instruction includes first timing arrangement information for the communication cell to send interference signals, so that the communication cell sends its respective interference signals at the corresponding time according to the first timing arrangement information; Send an interference detection command to the sensing cell, wherein the interference detection command includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection according to the time when the communication cell sends the interference signal according to the second timing arrangement information; Obtain the interference detection results of the sensing cell on the communication cell, and disable the interference avoidance function of the corresponding communication cell based on the interference detection results.

2. The method according to claim 1, characterized in that, The step of selecting to disable the interference avoidance function of the corresponding communication cell based on the interference detection result includes: The interference avoidance function is disabled for communication cells whose interference detection results are less than or equal to a first predetermined interference threshold.

3. The method according to claim 1, characterized in that, Before sending the interference signal output command to the communication cell, the following steps are included: The timing sequence of the interference signals transmitted by the communication cell to be detected is arranged.

4. The method according to claim 3, characterized in that, The timing arrangement of the transmission of interference signals by the communication cell to be detected includes: Arrange the correspondence between the time when each communication cell transmits interference signals and each designated radio frame number, wherein the designated radio frame number serves as the start point for the corresponding communication cell to transmit interference signals on the radio frame.

5. The method according to claim 4, characterized in that, The first timing arrangement information includes: a specified wireless frame number and an interference signal detection period.

6. The method according to claim 5, characterized in that, The instruction to send an interference signal output to the communication cell includes: Based on the first timing arrangement information carried in the interference signal output instruction, the communication cell is instructed to send interference signals on the radio frame starting with the corresponding designated radio frame number and according to the corresponding interference signal detection period.

7. The method according to claim 4, characterized in that, The second timing arrangement information includes: the total number of communication cells, the designated radio frame number, and the interference signal detection period.

8. The method according to claim 7, characterized in that, Sending the interference detection command to the sensing cell includes: Based on the second timing arrangement information carried in the interference detection instruction, the sensing cell is notified to detect the interference signals sent by each communication cell according to the corresponding interference signal detection period, using the corresponding specified radio frame number as the starting point.

9. The method according to claim 1, characterized in that, Before activating the interference avoidance function for all communication cells to be subjected to interference detection, the following steps are also included: Obtain the operating radius and identify all communication cells within the operating radius of the sensing cell that are to be subjected to interference detection.

10. The method according to claim 9, characterized in that, After enabling the interference avoidance function for all communication cells to be subjected to interference detection, it also includes: Send a sensing cell noise floor detection command to the sensing cell to obtain the sensing cell noise floor value; If the perceived noise floor value is less than the second predetermined interference threshold, an interference signal output command is sent to the communication cell.

11. The method according to claim 10, characterized in that, Also includes: If the perceived noise floor value is greater than or equal to the second predetermined interference threshold, the interference avoidance function of all communication cells to be detected for interference is turned off, and a larger second predetermined interference threshold and / or a larger operating radius is reset.

12. A device for detecting and avoiding interference signals, characterized in that, include: The module is enabled to activate the interference avoidance function for all communication cells to be subjected to interference detection. The first transmitting module is configured to transmit an interference signal output instruction to the communication cell, wherein the interference signal output instruction includes first timing arrangement information for the communication cell to transmit interference signals, so that the communication cell transmits its respective interference signals at corresponding times according to the first timing arrangement information; The second sending module is used to send an interference detection instruction to the sensing cell, wherein the interference detection instruction includes second timing arrangement information to notify the sensing cell to perform corresponding interference signal detection according to the time when the interference signal is sent in the communication cell according to the second timing arrangement information; The first acquisition module is used to acquire the interference detection results of the sensing cell on the communication cell, and to disable the interference avoidance function of the corresponding communication cell according to the interference detection results.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 1 to 11.

14. 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 computer program, it implements the steps of the method described in any one of claims 1 to 11.

15. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 11.

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