Security method, system and computer device based on indoor distributed antenna system

Abstract

The application relates to a security method and system based on an indoor distributed antenna system, a computer device, a storage medium and a computer program product. The indoor distributed antenna system comprises a near-end device and at least two remote-end devices connected to the near-end device. The method comprises the following steps: receiving an abnormal access signal; wherein the abnormal access signal carries a remote-end device address of an area where an abnormal communication device is located; generating a network disconnection instruction based on the abnormal access signal, and delivering the network disconnection instruction to a first remote-end device corresponding to the remote-end device address, so that the first remote-end device turns off a radio frequency signal in the area. The method can perform a safe network disconnection operation in the minimum unit, realizes small-range targeted network disconnection, and maximally reduces the influence on a communication network.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a network disconnection method and system based on an indoor distributed antenna system, a computer device, a storage medium and a computer program product. BACKGROUND

[0002] With the development of communication technology, people have higher and higher requirements for the reliability and security of communication. In some specific environments, communication signals will be disturbed, reducing the reliability of communication. For example, in office buildings, stadiums, hotels, hospitals, subways, airports and other places, building materials will hinder or interrupt cellular signals, or wireless network overload occurs, and network connection still has problems. In order to solve such problems, a distributed antenna system (DAS) is used to expand mobile wireless signals by using an antenna network widely distributed in various parts of the building.

[0003] The distributed antenna system (DAS) is an implementation scheme to support users of wireless devices such as mobile phones to connect to the network. In some scene environments, if there are abnormal users accessing the network, in order to ensure the communication safety of a specific area, the signal transmission of the distributed antenna system is automatically cut off, resulting in the entire coverage area of the distributed antenna system being disconnected. SUMMARY

[0004] Therefore, it is necessary to provide a security method, system, computer device, computer readable storage medium and computer program product based on an indoor distributed antenna system, which can realize targeted network disconnection in a specified area.

[0005] In a first aspect, the present application provides a security method based on an indoor distributed antenna system. The indoor distributed antenna system includes a near-end device and at least two remote-end devices connected to the near-end device. The method comprises:

[0006] receiving a reported abnormal access signal; the abnormal access signal carries a remote-end device address of an area where an abnormal communication device is located;

[0007] generating a network disconnection instruction based on the abnormal access signal, and issuing the network disconnection instruction to a first remote-end device corresponding to the remote-end device address, so as to make the first remote-end device turn off the radio frequency signal in the area.

[0008] In one embodiment, the method further comprises:

[0009] based on the remote-end device address, if it is detected that there is at least one second remote-end device that overlaps with the radio frequency signal coverage area of the first remote-end device, a power adjustment instruction is generated;

[0010] sending the power adjustment instruction to the at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, and the radio frequency signal coverage area of the first remote device does not have a coincident coverage area.

[0011] In one of the embodiments,

[0012] If it is detected that there is at least one second remote device having a coincident coverage area with the radio frequency signal coverage area of the first remote device, a power adjustment instruction is generated, comprising:

[0013] If it is detected that there is at least one second remote device having a coincident coverage area with the radio frequency signal coverage area of the first remote device, the location information of the abnormal communication device and the device address of the at least one second remote device are acquired;

[0014] According to the location information and the device address of the at least one second remote device, the center distance of the abnormal communication device and the at least one second remote device is respectively determined;

[0015] Based on the power adjustment amount determined by each of the center distances, a power adjustment amount carrying the power adjustment amount is generated.

[0016] In one of the embodiments, the method further comprises:

[0017] In response to the reported signal recovery request, a first signal recovery instruction and a second signal recovery instruction are generated; the signal recovery request is triggered by the first remote device not detecting an abnormal communication device access within a set duration;

[0018] The first signal recovery instruction is issued to the first remote device, so that the first remote device turns on the radio frequency signal in the area; and

[0019] The second signal recovery instruction is issued to the at least one second remote device, so that the at least one second remote device recovers the radio frequency signal power.

[0020] In one of the embodiments, the method further comprises:

[0021] Normal communication device information allowing network access is forwarded to the at least two remote devices via the near-end device, so that each of the remote devices detects whether the accessed communication device is abnormal.

[0022] In a second aspect, the application further provides an indoor distributed antenna system-based security system. The indoor distributed antenna system comprises a near-end device and at least two remote devices connected to the near-end device, and the near-end device comprises a signal receiving module and a signal sending module, wherein:

[0023] The signal receiving module is configured to receive an abnormal access signal reported by the near-end device; the abnormal access signal carries a remote device address of a region where an abnormal communication device is located;

[0024] The signal sending module is configured to generate a network disconnection instruction based on the abnormal access signal, and send the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off a radio frequency signal in a region where the first remote device is located.

[0025] In a third aspect, the present application further provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0026] receiving a reported abnormal access signal; the abnormal access signal carries a remote device address of a region where an abnormal communication device is located;

[0027] generating a network disconnection instruction based on the abnormal access signal, and sending the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off a radio frequency signal in a region where the first remote device is located.

[0028] In a fourth aspect, the present application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0029] receiving a reported abnormal access signal; the abnormal access signal carries a remote device address of a region where an abnormal communication device is located;

[0030] generating a network disconnection instruction based on the abnormal access signal, and sending the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off a radio frequency signal in a region where the first remote device is located.

[0031] In a fifth aspect, the present application further provides a computer program product. The computer program product comprises a computer program, and the computer program is executed by a processor to implement the following steps:

[0032] receiving a reported abnormal access signal; the abnormal access signal carries a remote device address of a region where an abnormal communication device is located;

[0033] generating a network disconnection instruction based on the abnormal access signal, and sending the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off a radio frequency signal in a region where the first remote device is located.

[0034] In a sixth aspect, the application provides a security method based on an indoor distributed antenna system. The indoor distributed antenna system comprises a near-end device and at least two remote-end devices connected to the near-end device. The method is applied to the remote-end devices and comprises the following steps:

[0035] generating an abnormal access signal when an abnormal communication device accesses, wherein the abnormal access signal carries the remote-end device address of the area where the abnormal communication device is located;

[0036] reporting the abnormal access signal to the near-end device and forwarding the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and sends the network disconnection instruction to a first remote-end device corresponding to the remote-end device address;

[0037] turning off the radio frequency signal of the area where the first remote-end device is located in response to the network disconnection instruction fed back by the server.

[0038] In one embodiment, the method further comprises the following steps:

[0039] generating a signal recovery request if no abnormal communication device accesses within a set duration;

[0040] forwarding the signal recovery request to the server via the near-end device and receiving a signal recovery instruction fed back by the server in response to the signal recovery request;

[0041] turning on the radio frequency signal of the area where the first remote-end device is located in response to the signal recovery instruction.

[0042] In a seventh aspect, the application further provides a security system based on an indoor distributed antenna system. The system comprises an indoor distributed antenna system and a server connected to the indoor distributed antenna system. The indoor distributed antenna system comprises a near-end device and at least two remote-end devices connected to the near-end device. The remote-end devices comprise a signal generation module, a reporting module and a signal response module, wherein:

[0043] the signal generation module is configured to generate an abnormal access signal when an abnormal communication device accesses, wherein the abnormal access signal carries the remote-end device address of the area where the abnormal communication device is located;

[0044] the reporting module is configured to report the abnormal access signal to the near-end device and forward the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and sends the network disconnection instruction to a first remote-end device corresponding to the remote-end device address;

[0045] a signal response module, configured to close radio frequency signals in a region where the signal response module is located in response to the network disconnection instruction fed back by the server.

[0046] In an eighth aspect, the present application provides a computer device. The computer device comprises a memory and a processor. The memory stores a computer program. The processor implements the following steps when executing the computer program:

[0047] generating an abnormal access signal when detecting an abnormal communication device access; the abnormal access signal carries a remote device address of a region where the abnormal communication device is located;

[0048] reporting the abnormal access signal to the near-end device and forwarding the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and issues the network disconnection instruction to a first remote device corresponding to the remote device address;

[0049] closing radio frequency signals in a region where the signal response module is located in response to the network disconnection instruction fed back by the server.

[0050] In a ninth aspect, the present application provides a computer readable storage medium. The computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps:

[0051] generating an abnormal access signal when detecting an abnormal communication device access; the abnormal access signal carries a remote device address of a region where the abnormal communication device is located;

[0052] reporting the abnormal access signal to the near-end device and forwarding the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and issues the network disconnection instruction to a first remote device corresponding to the remote device address;

[0053] closing radio frequency signals in a region where the signal response module is located in response to the network disconnection instruction fed back by the server.

[0054] In a tenth aspect, the present application provides a computer program product. The computer program product comprises a computer program. The computer program is executed by a processor to implement the following steps:

[0055] generating an abnormal access signal when detecting an abnormal communication device access; the abnormal access signal carries a remote device address of a region where the abnormal communication device is located;

[0056] reporting the abnormal access signal to the near-end device and forwarding the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and issues the network disconnection instruction to a first remote device corresponding to the remote device address;

[0057] In response to the network disconnection instruction fed back by the server, the radio frequency signal of the region is turned off.

[0058] The security method, system, computer device, storage medium and computer program product based on the indoor distributed antenna system, when receiving the reported abnormal access signal, generates a network disconnection instruction and sends the network disconnection instruction to the first remote device corresponding to the remote device address of the indoor distributed antenna system, so that the first remote device turns off the radio frequency signal of the region. When the first remote device detects an abnormal communication device accessing the network, the radio frequency signal of the corresponding region is turned off to perform a safe network disconnection operation in the smallest unit, realize a small-range targeted network disconnection, and maximize the reduction of the impact on the communication network. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1a The application environment diagram of the security method based on the indoor distributed antenna system in one embodiment;

[0060] Figure 1b The application environment diagram of the security method based on the indoor distributed antenna system in another embodiment;

[0061] Figure 2 The flowchart of the security method based on the indoor distributed antenna system in one embodiment;

[0062] Figure 3 The schematic diagram of the security method based on the indoor distributed antenna system in one embodiment;

[0063] Figure 4 The flowchart of the security method based on the indoor distributed antenna system in another embodiment;

[0064] Figure 5 The coverage diagram of the remote device based on the indoor distributed antenna in one embodiment;

[0065] Figure 6 The flowchart of the method for adjusting the radio frequency signal power in one embodiment;

[0066] Figure 7 The flowchart of the security method based on the indoor distributed antenna system in another embodiment;

[0067] Figure 8 The flowchart of the security method based on the indoor distributed antenna system in another embodiment;

[0068] Figure 9 The interaction diagram of the security method based on the indoor distributed antenna system in one embodiment;

[0069] Figure 10 a structural block diagram of a security system based on an indoor distributed antenna system in one embodiment;

[0070] Figure 11 a structural block diagram of a security system based on an indoor distributed antenna system in another embodiment;

[0071] Figure 12 an internal structural diagram of a computer device in one embodiment. DETAILED DESCRIPTION

[0072] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0073] The security method based on an indoor distributed antenna system provided by the embodiments of the present application can be understood as follows: the security method based on an indoor distributed antenna system is executed by a control device, and when the indoor distributed antenna system includes one near-end device, the control device is the near-end device. The security method based on an indoor distributed antenna system can be applied to an application environment as shown in FIG. 1. Figure 1a The application environment as shown in FIG. 1 includes a base station 102, an indoor distributed antenna system 104, and a communication device 106. The indoor distributed antenna system includes a near-end device, at least one or more relay devices connected to the near-end device, and at least one or more far-end devices connected to each relay device. The base station 102, the indoor distributed antenna system 104, and the communication device 106 communicate through a network. When the near-end device receives an abnormal access signal carrying a far-end device address of an abnormal communication device, the near-end device generates a network disconnection instruction based on the abnormal access signal and sends the network disconnection instruction to a first far-end device corresponding to the far-end device address, so that the first far-end device turns off a radio frequency signal in a region where the first far-end device is located. Figure 1a When the indoor distributed antenna system includes at least two near-end devices, the control device is an external server outside the antenna system, and the external server communicates with the far-end devices through the near-end devices. The security method based on an indoor distributed antenna system can be applied to an application environment as shown in FIG. 2.

[0074] The application environment as shown in FIG. 2 includes a base station 202, an indoor distributed antenna system 204, and a communication device 206. The indoor distributed antenna system includes at least two near-end devices, at least one or more relay devices connected to each near-end device, and at least one or more far-end devices connected to each relay device. The base station 202, the indoor distributed antenna system 204, and the communication device 206 communicate through a network. When the near-end devices receive an abnormal access signal carrying a far-end device address of an abnormal communication device, the near-end devices generate a network disconnection instruction based on the abnormal access signal and send the network disconnection instruction to a first far-end device corresponding to the far-end device address, so that the first far-end device turns off a radio frequency signal in a region where the first far-end device is located. Figure 1b Figure 1b ​The application environment shown includes a base station 102, an indoor distributed antenna system 104, a communication device 106, and a server 108. The indoor distributed antenna system includes a near-end device, at least one or more relay devices connected to the near-end device, and at least one or more far-end devices connected to each relay device. The base station 102, the indoor distributed antenna system 104, the server 108, and the communication device 106 communicate through a network. A data storage system can store data required to be processed by the server 108. The data storage system can be integrated on the server 108 or placed on a cloud server or other network server. The server receives an abnormal access signal reported by the near-end device; wherein the abnormal access signal carries the far-end device address of the area where the abnormal communication device is located; generates a network disconnection instruction based on the abnormal access signal, and issues the network disconnection instruction to the first far-end device corresponding to the far-end device address, so as to make the first far-end device turn off the radio frequency signal in the area. The communication device 106 can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The server 108 can be implemented by an independent server or a server cluster composed of multiple servers.

[0075] In one embodiment, as shown in Figure 2 , a security method based on an indoor distributed antenna system is provided. The method is applied to the server in Figure 1b for example, and includes the following steps:

[0076] Step S202, receiving the reported abnormal access signal; wherein the abnormal access signal carries the far-end device address of the area where the abnormal communication device is located.

[0077] It can be understood that the distributed antenna system can be deployed indoors or outdoors. DAS is to distribute the transmit power among several antenna units that are spatially separated in order to provide coverage in the same area as a single antenna, with reduced total power and improved reliability. DAS is an antenna network that transmits and receives cellular signals on carrier-licensed frequencies, thereby improving voice and data connectivity for end users. In practical applications, the base station information inside a specific place is poor, which cannot ensure the normal communication of users. The function of the indoor distributed antenna system is used to meet the communication demand in the specific place.

[0078] In a specific place, according to actual needs, whether the accessed communication device is abnormal is detected, or information is pushed to the accessed communication device. In the embodiment, the actual needs are taken as an example to illustrate whether the accessed communication device is abnormal. The indoor distributed antenna system includes a near-end device, a relay device, at least one or more relay devices connected with the near-end device, and at least one or more remote-end devices connected with each relay device. The specific place is completely covered by communication signals through radio frequency signals generated by the remote-end devices, and the number of the remote-end devices is determined according to the area of the specific place and the strength of the radio frequency signals generated by the remote-end devices.

[0079] The remote-end device can detect whether the accessed communication device is abnormal, and further, the remote-end device can detect according to the information of the communication device obtained by the probe. When the remote-end device obtains the device information of the accessed communication device, if it is detected that the accessed communication device is abnormal, an abnormal access signal is reported to the relay device, and then reported to the near-end device through the relay device. The near-end device reports the abnormal access signal to the server through the mobile base station.

[0080] The remote-end device can detect the accessed communication device in the following manner: the device information of the accessed communication device is obtained by the WIFI probe arranged on the remote-end device, the device information is compared with the preset normal device information, and if it is determined that the accessed communication device is abnormal, an abnormal access signal is generated. The device information of the accessed communication device obtained by the WIFI probe can be the data information such as the MAC address and the SSID serial number of the communication device with the opened WIFI near the probe, which is identified and captured based on the WIFI detection technology, and details are not described herein.

[0081] Specifically, in a specific place, if the remote-end device in the indoor distributed antenna system detects that there is an abnormal communication device according to the information identified by the WIFI probe, an abnormal access signal is generated, wherein the abnormal access signal carries the address of the remote-end device in the area where the abnormal communication device is located. The abnormal access signal is reported to the relay device, and then reported to the near-end device through the relay device. The near-end device reports the abnormal access signal to the server. The server receives the abnormal access signal reported by the near-end device, verifies whether the abnormal communication device is abnormal access in response to the abnormal access signal, if it is verified that the abnormal communication device is normal access, a normal access signal is issued to the near-end device, the near-end device forwards the normal access signal to the corresponding remote-end device, the remote-end device keeps normal receiving and transmitting signals, and continuously detects the corresponding WIFI probe identification information.

[0082] Step S204: Generate a network disconnection command based on the abnormal access signal, and send the network disconnection command to the first remote device corresponding to the remote device address, so that the first remote device shuts down the radio frequency signal in its area.

[0083] Specifically, when the server verifies that an abnormal communication device has accessed the network, to prevent communication security issues caused by abnormal access, it generates a network disconnection command and an abnormal prompt message. The abnormal prompt message includes the location information of the abnormal communication device, determined by a first remote device. The network disconnection command is directly sent to the near-end device, which then forwards it to the first remote device corresponding to the remote device's address. This causes the first remote device to shut down the radio frequency signal in its area, thereby disconnecting the abnormal communication device from the network and preventing it from communicating normally. Furthermore, it can be understood that when the network disconnection command is sent to the first remote device corresponding to the remote device's address, causing it to shut down the radio frequency signal in its area, if the abnormal communication device is not within the signal coverage range of other remote devices, and the first remote device shuts down the radio frequency signal in its area, the abnormal communication device is in a signal dead zone, meaning it cannot communicate normally and is in a network disconnection state.

[0084] In one embodiment, such as Figure 3 The diagram illustrates a security method based on an indoor distributed antenna system. In this system, a remote device maintains signal transmission and reception with the communication equipment, for example, a 4G / 5G signal. The remote device transmits the signal to the near-end device via a relay device, and the near-end device then transmits the signal to the mobile base station. The mobile base station and the server communicate via a network.

[0085] The remote device monitors WiFi probe signals. If an abnormal communication device is detected, it reports the abnormal access signal to the near-end device. The near-end device then transmits the abnormal access signal to the server via the base station network. The server verifies the abnormal access signal. If it is an abnormal access, it issues a network disconnect command, which is forwarded by the near-end device to the corresponding remote device. The remote device disconnects its radio frequency signal, the abnormal communication device loses network access, and an abnormality prompt is generated and displayed on the user terminal, along with the location of the abnormal communication device. If it is a normal access, it sends a normal access signal to the near-end device, which forwards it to the corresponding remote device, enabling the remote device to maintain normal signal transmission and reception and continuously monitor the corresponding WiFi probe identification information.

[0086] In the security method based on the indoor distributed antenna system, when the abnormal access signal reported by the near-end device of the indoor distributed antenna system is received, a network interruption instruction is generated, the network interruption instruction is sent to the first remote device corresponding to the remote device address of the indoor distributed antenna system, so that the first remote device closes the radio frequency signal of the region where the first remote device is located, and when the abnormal communication device accesses the network is detected, the radio frequency signal of the corresponding region is closed to perform the security network interruption operation in the smallest unit, thereby realizing the small-range targeted network interruption and minimizing the influence on the communication network.

[0087] In the indoor distributed antenna system, in order to ensure that each position in a specific region can realize normal communication, the signal coverage area of each remote device will overlap in the region, and when an abnormal communication device accesses, in order to make the abnormal communication device completely in the signal blind area, all remote devices in the region where the abnormal communication device is located need to be adjusted, so that the abnormal communication device is completely in the signal blind area, and the safety of communication is ensured.

[0088] In another embodiment, as shown in Figure 4 , a security method based on an indoor distributed antenna system is provided, which is applied to a server in Figure 1b for example, and includes the following steps:

[0089] In step S402, the abnormal access signal is received; wherein the abnormal access signal carries the remote device address of the region where the abnormal communication device is located.

[0090] In step S404, a network interruption instruction is generated based on the abnormal access signal, and the network interruption instruction is sent to the first remote device corresponding to the remote device address, so that the first remote device closes the radio frequency signal of the region where the first remote device is located.

[0091] In step S406, based on the remote device address, if it is detected that there is at least one second remote device with overlapping coverage area with the radio frequency signal coverage area of the first remote device, a power adjustment instruction is generated.

[0092] It can be understood that the radio frequency signal power of each remote device has a certain range of coverage, and in normal circumstances, in order to avoid signal blind area, the signal coverage range of each remote device overlaps. Among them, whether there is a second remote device with overlapping coverage area based on the remote device address of the first remote device can be determined according to the established position matrix model. Wherein, the radio frequency signal power of the second remote device is known, and according to the known radio frequency signal power, the signal coverage range of the second remote device can be known.

[0093] Specifically, when it is detected that the signal coverage area of the first remote device has an abnormal communication device access, power adjustment needs to be performed on a second remote device that has an overlapping coverage area with the first remote device, so that the second remote device does not have an overlapping coverage area with the first remote device. The second remote device that has an overlapping coverage area with the first remote device is determined according to the remote device address of the first remote device, and a power adjustment instruction for each second remote device is generated. As shown in Figure 5 As shown in FIG. 13, it is a remote device coverage diagram of a specific place based on an indoor distribution antenna, including 9 remote devices, and a device provided with a wifi probe on the remote device covers the mobile 4 / 5G signal of the specific place. Under normal circumstances, when a communication device enters the A-H and X 9 areas, the communication device can normally access the Internet and has a wifi signal. When the communication device enters the X area, the communication device is linked to the wifi probe of the remote device 9 and is identified by the remote device 9 as an abnormal communication device. The remote device 9 can then turn off the radio frequency signal, and the X area is in the blind area of the 4 / 5G signal. At the same time, the device 9 reports an abnormal alarm. After the near-end device receives the abnormal access signal reported by the remote device 9, the abnormal access signal is forwarded to the server, and according to the preset device address, the device address of the reporting remote device 9 is compared. The remote devices 2, 4, 6, and 8 around the device 9 are instructed to reduce the radio frequency signal power (i.e., to reduce the signal coverage area of B, H, D, and F), so as to ensure that the corresponding area is completely in the blind area of the 4 / 5G signal. When the abnormal communication device leaves the X area and the wifi probe of the remote device 9 cannot detect the abnormal communication device, the radio frequency signal of the remote device 9 is restarted, and a normal recovery alarm is reported to the near-end device. The near-end device instructs the radio frequency signal strength of the devices 2, 4, 6, and 8 around the remote device 9 to be restored. When the abnormal mobile phone leaves the X area and enters the B area, the same operation is performed, the remote device 2 turns off the radio frequency signal, the B area is disconnected, and an abnormal alarm is reported. According to the abnormal alarm reported by the remote device 2, the near-end device again instructs the devices 1, 3, and 9 to reduce the radio frequency signal power (i.e., to reduce the signal coverage area of A, X, and C). In this way, in a closed place, according to the mobile abnormal mobile phone, the mobile 4 / 5G signal of the relative area is dynamically turned off in real time, so as to ensure that the abnormal communication device has the minimum impact and is in a signal-free state, and the position of the abnormal mobile phone is reported in real time.

[0094] In step S408, the power adjustment instruction is sent to at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, so that there is no overlapping coverage area with the radio frequency signal coverage area of the first remote device.

[0095] Wherein, when the power adjustment is made to the second remote device based on the power adjustment instruction, the adjustment can be made according to a preset rule, for example, the RF signal power of each second remote device is adjusted according to a set power adjustment amount, or the adjustment can be determined according to the center distance between each second remote device and the abnormal communication device.

[0096] In the above embodiment, when the abnormal access signal reported by the near-end device of the indoor distributed antenna system is received, the network interruption instruction is generated, the network interruption instruction is sent to the first remote device corresponding to the address of the remote device of the indoor distributed antenna system, the RF signal of the first remote device is turned off, further detection is made, if a second remote device with overlapping coverage area with the signal coverage area of the first remote device is detected, the RF power of the second remote device is adjusted, so that the signal coverage area of the first remote device is in a signal-free area, and the abnormal communication device is in a signal blind area, so as to perform safe network interruption in the smallest unit, and realize dynamic small-range network interruption, and the influence on the communication network is minimized.

[0097] In one embodiment, as shown in Figure 6 , a method for adjusting RF signal power is provided, which is applied to the server in Figure 1b for example, and includes the following steps:

[0098] Step S602, if it is detected that there is at least one second remote device with overlapping coverage area with the RF signal coverage area of the first remote device, the position information of the abnormal communication device and the device address of the at least one second remote device are obtained.

[0099] Wherein, the position information of the abnormal communication device can be obtained by a WiFi probe. The device address of the second remote device is determined in advance.

[0100] Step S604, according to the position information and the device address of the at least one second remote device, the center distance between the abnormal communication device and the at least one second remote device is determined respectively.

[0101] Step S606, based on the power adjustment amount determined by each center distance, a power adjustment amount carrying the power adjustment amount is generated.

[0102] Wherein, according to the center distance between the abnormal communication device and each second remote device, the corresponding power adjustment amount is determined, and the corresponding second remote device is accurately adjusted, so as to avoid the improper adjustment of the second remote device and affect the normal communication of other devices. It can be understood that the relationship between the RF signal power and the coverage distance is positively correlated, that is, after the power adjustment amount is determined, the RF signal power of the second remote device is reduced.

[0103] In the above embodiment, when the power of the second remote device with overlapping coverage area with the first remote device is adjusted, the adjustment is made according to the center distance between the second remote device and the abnormal communication device, so that the accuracy of the adjustment is realized and the reliability of the communication in the specific place is ensured.

[0104] Further, when the first remote device detects the abnormal communication device, the radio frequency signal is turned off, and after the radio frequency signal of the second remote device near the abnormal communication device is reduced, the first remote device continues to detect through the WiFi probe. If the abnormal communication device is not detected within a set duration, the radio frequency signal of the first remote device is turned on and the radio frequency signal power of the second remote device is restored, so as to reduce the influence on the communication network.

[0105] In another embodiment, as shown in Figure 7 , a security protection step based on an indoor distributed antenna system is provided. Taking the server in Figure 1b as an example, the method includes the following steps:

[0106] In step S702, the abnormal access signal is received. The abnormal access signal carries the remote device address of the area where the abnormal communication device is located.

[0107] The abnormal access signal is generated by the remote device when detecting the abnormal communication device. Further, the server sends the normal communication device information allowed to access the network to the near-end device, and the near-end device forwards the normal communication device information to at least two remote devices, so that each remote device detects whether the accessed communication device is abnormal. If it is detected that an abnormal communication device accesses, an abnormal access signal is generated. Only the preset normal communication device is allowed to access in the specified area, and the access of other communication devices is avoided, so as to ensure the security of the communication network in the specified area.

[0108] Further, the remote device detects whether the accessed communication device is abnormal. If it is detected that an abnormal communication device accesses, the abnormal communication device is located, the abnormal position is determined, and the corresponding business processing is performed according to the actual business demand. For example, in a specific area, the communication device is located by the remote device, the trajectory data of the communication device is obtained, and the trajectory data is sent to the server. According to the trajectory data, the position of the target object corresponding to the target communication device can be determined. For example, in a specific area, the number of communication devices is obtained by counting the communication devices accessed by the remote device. According to the number of communication devices, the personnel density in the specific area (for example, a shopping mall) can be controlled, and the safety in the specific area can be ensured.

[0109] Step S704, a network interruption instruction is generated based on the abnormal access signal, and the network interruption instruction is sent to the first remote device corresponding to the remote device address, so that the first remote device closes the radio frequency signal in the area.

[0110] Step S706, based on the remote device address, if it is detected that there is at least one second remote device and the first remote device in the radio frequency signal coverage area, a power adjustment instruction is generated.

[0111] Step S708, the power adjustment instruction is sent to the at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, and there is no overlapping coverage area with the radio frequency signal coverage area of the first remote device.

[0112] Step S710, in response to the signal recovery request reported by the near-end device, a first signal recovery instruction and a second signal recovery instruction are generated; the signal recovery request is triggered by the first remote device not detecting abnormal communication device access within a set duration.

[0113] The set duration can be set according to actual needs, which can be 10 seconds, and is not limited here.

[0114] Specifically, the first remote device does not detect abnormal communication device access within a set duration, triggering the generation of a signal recovery request, and in response to the signal recovery request reported by the near-end device, a signal recovery instruction is generated.

[0115] Step S712, the first signal recovery instruction is sent to the first remote device, so that the first remote device opens the radio frequency signal in the area.

[0116] Step S714, the second signal recovery instruction is sent to the at least one second remote device, so that the at least one second remote device recovers the radio frequency signal power.

[0117] Specifically, the first signal recovery instruction is sent to the first remote device respectively, so that the first remote device opens the radio frequency signal in the area. The second signal recovery instruction is sent to the at least one second remote device, so that the at least one second remote device recovers the radio frequency signal power, i.e. the radio frequency signal power of the second remote device is recovered to the power before adjustment.

[0118] In the above embodiment, when the abnormal access signal reported by the near-end device of the indoor distributed antenna system is received, a network interruption instruction is generated, the network interruption instruction is sent to the first remote device corresponding to the address of the remote device of the indoor distributed antenna system, the radio frequency signal of the first remote device is turned off, further detection is performed, if a second remote device with overlapping coverage area with the signal coverage area of the first remote device is detected, the radio frequency power of the second remote device is adjusted, so that the signal coverage area of the first remote device is in a signal-free area, and the abnormal communication device is in a signal blind area, when the abnormal communication device is not detected within a set duration, the radio frequency signal of the area where the first remote device is turned on and the radio frequency signal power of the second remote device are restored, and the safe network interruption operation is performed in the minimum unit, and the dynamic small-range network interruption is realized, which maximally reduces the influence on the communication network.

[0119] It can be understood that when there is only one near-end device in the indoor distributed antenna system, the function of the above-mentioned server is integrated in the near-end device, that is, the near-end device receives the abnormal access signal reported by the first remote device, wherein the abnormal access signal carries the address of the remote device in the area where the abnormal communication device is located; a network interruption instruction is generated based on the abnormal access signal, and the network interruption instruction is sent to the first remote device corresponding to the address of the remote device, so that the first remote device turns off the radio frequency signal in the area. The near-end device realizes the security protection method based on the indoor distributed antenna system as described above, and the implementation scheme as described above. Here, it is not repeated.

[0120] In another embodiment, as shown in Figure 8 , a security protection method based on an indoor distributed antenna system is provided. Taking the remote device in Figure 1b as an example, the method includes the following steps:

[0121] Step S802, when an abnormal communication device is detected, an abnormal access signal is generated; the abnormal access signal carries the address of the remote device in the area where the abnormal communication device is located.

[0122] The WiFi probe is provided on the remote device and is in a password-free link mode. The WiFi probe is used to identify the communication device and obtain the device information of the communication device. The remote device receives the normal device information sent by the server, compares the device information identified by the WiFi probe with the normal device information, and determines that the communication device is abnormal access if there is no information matching the device information in the normal device information.

[0123] Specifically, the remote device is provided with a WiFi probe in a password-free link mode, acquires normal device information issued by the server, and reports the remote device address to the server, polls device information linked to the WiFi probe, matches the device information, and if there is no matching device information in the normal device information, determines that the corresponding communication device is an abnormal communication device, and generates an abnormal access signal carrying the remote device address of the area where the abnormal communication device is located.

[0124] In step S804, the abnormal access signal is reported to the near-end device and forwarded to the server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and issues the network disconnection instruction to the first remote device corresponding to the remote device address.

[0125] It can be understood that if there is only one near-end device in the indoor distributed antenna system, the abnormal access signal is reported to the near-end device, so that the near-end device generates a network disconnection instruction according to the abnormal access signal and issues the network disconnection instruction to the first remote device corresponding to the remote device address.

[0126] In step S806, in response to the network disconnection instruction fed back by the server, the radio frequency signal in the area where the first remote device is located is turned off.

[0127] The specific definition of the embodiment applied to the remote device can be referred to the definition of the security protection method based on the indoor distributed antenna system applied to the server in the foregoing, which will not be described herein.

[0128] The security protection method based on the indoor distributed antenna system described above, when the indoor distributed antenna system implements network communication, generates an abnormal access signal when detecting abnormal access of a communication device, and reports it to the server. By receiving the network disconnection instruction issued by the server, the radio frequency signal in the corresponding area is turned off to perform a safe network disconnection operation in the smallest unit, realize small-range targeted network disconnection, and maximize the reduction of the impact of the communication network.

[0129] Further, in one embodiment, if the first remote device does not detect abnormal communication device access within a set duration, a signal recovery request is generated; the signal recovery request is forwarded to the server via the near-end device, and a signal recovery instruction fed back by the server in response to the signal recovery request is received; in response to the signal recovery instruction, the radio frequency signal in the area is turned on. Further, the server will issue the signal recovery instruction to the second remote device that overlaps with the first remote device, so that the second remote device restores the radio frequency signal power in response to the signal recovery instruction to ensure normal communication in a specific place.

[0130] In one embodiment, as Figure 9As shown, an interactive diagram of a security method based on an indoor distributed antenna system is provided. The server sends normal communication device information to the near-end device, the near-end device forwards the normal communication device information to the far-end device, when the far-end device detects abnormal access of the communication device based on the WiFi probe, generates an abnormal access signal carrying the address of the far-end device in the area where the abnormal communication device is located, and reports the abnormal access signal to the server through the near-end device. The server receives the abnormal access signal reported by the near-end device, generates a network disconnection instruction, and sends the network disconnection instruction to the first far-end device corresponding to the far-end device address through the near-end device. The first far-end device closes the radio frequency signal in the area where the first far-end device is located in response to the network disconnection instruction fed back by the server. If the server detects that there is at least one second far-end device that overlaps with the radio frequency signal coverage area of the first far-end device, generates a power adjustment instruction, and sends the power adjustment instruction to the at least one second far-end device to make the at least one second far-end device adjust the radio frequency signal power, so that the radio frequency signal coverage area of the first far-end device does not exist. Overlapping coverage area.

[0131] If no abnormal communication device access is detected within the set duration, a signal recovery request is generated; the signal recovery request is forwarded to the server via the near-end device, the server generates a first signal recovery instruction and a second signal recovery instruction in response to the signal recovery request reported by the near-end device, sends the first signal recovery instruction to the first far-end device to make the first far-end device open the radio frequency signal in the area where the first far-end device is located; and sends the second signal recovery instruction to at least one second far-end device to make the at least one second far-end device restore the radio frequency signal power. Through the indoor distributed antenna system and the wifi probe technology, the small coverage range of iDas radio frequency signal is used, combined with the certain overlap degree with the coverage range of wifi, and the integrated targeted function, the network communication is ensured, the minimum unit of the security network disconnection operation is executed, and the dynamic small range network disconnection is realized, thereby minimizing the influence on the communication network.

[0132] It should be understood that, although each step in the flowchart involved in each embodiment as described above is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or stages in other steps.

[0133] Based on the same inventive concept, the embodiments of the present application also provide an indoor distributed antenna system-based security system for implementing the above-mentioned indoor distributed antenna system-based security method. The implementation scheme for solving the problem provided by the system is similar to the implementation scheme described in the above-mentioned method, and therefore the specific limitations in one or more embodiments of the indoor distributed antenna system-based security system provided below can refer to the limitations of the indoor distributed antenna system-based security method described above, which will not be described here again.

[0134] In one embodiment, as shown in Figure 10 An indoor distributed antenna system-based security system is provided, comprising: a signal receiving module 1002 and a signal sending module 1004, wherein:

[0135] The signal receiving module 1002 is configured to receive the reported abnormal access signal; the abnormal access signal carries the remote device address of the area where the abnormal communication device is located.

[0136] The signal sending module 1004 is configured to generate a network disconnection instruction based on the abnormal access signal, and send the network disconnection instruction to the first remote device corresponding to the remote device address, so that the first remote device closes the radio frequency signal in the area.

[0137] The above-mentioned indoor distributed antenna system-based security system, when the indoor distributed antenna system implements network communication, generates a network disconnection instruction when receiving the reported abnormal access signal, sends the network disconnection instruction to the first remote device corresponding to the remote device address of the indoor distributed antenna system, so that the first remote device closes the radio frequency signal in the area, and when the first remote device detects the abnormal communication device accessing the network, the radio frequency signal in the corresponding area is closed to perform a safety network disconnection operation in the smallest unit, to realize a small-range targeted network disconnection and to maximize the reduction of the impact on the communication network.

[0138] In another embodiment, an indoor distributed antenna system-based security system is provided, which comprises a signal receiving module 1002 and a signal sending module 1004, and further comprises: a detection module, a power adjustment amount determination module, a response module and a data sending module, wherein:

[0139] The detection module is configured to generate a power adjustment instruction based on the remote device address, if it is detected that there is at least one second remote device and the first remote device have overlapping coverage areas in the radio frequency signal coverage area.

[0140] The power adjustment instruction is sent to the at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, and there is no overlapping coverage area with the radio frequency signal coverage area of the first remote device.

[0141] The power adjustment amount determination module is configured to, if it is detected that there is at least one second remote device that has an overlapping coverage area with the radio frequency signal coverage area of the first remote device, acquire the location information of the abnormal communication device and the device address of the at least one second remote device.

[0142] The center distance between the abnormal communication device and the at least one second remote device is determined according to the location information and the device address of the at least one second remote device.

[0143] The power adjustment amount carrying the power adjustment amount determined based on the center distance is generated. The response module is configured to, in response to the reported signal recovery request, generate a first signal recovery instruction and a second signal recovery instruction; the signal recovery request is triggered by the first remote device not detecting the abnormal communication device accessing within a set duration.

[0144] The signal sending module 1004 is further configured to send the first signal recovery instruction to the first remote device and the at least one second remote device, so that the first remote device turns on the radio frequency signal in the area where the first remote device is located.

[0145] The second signal recovery instruction is sent to the at least one second remote device, so that the at least one second remote device recovers the radio frequency signal power.

[0146] The data sending module is configured to send normal communication device information that is allowed to access the network to the near-end device, and forward the normal communication device information to the at least two remote devices through the near-end device, so that each remote device detects whether the accessed communication device is abnormal.

[0147] In one embodiment, as shown in Figure 11 An indoor distributed antenna system-based security system is provided, which includes an indoor distributed antenna system and a server connected to the indoor distributed antenna system. The indoor distributed antenna system includes a near-end device and at least two remote devices connected to the near-end device. The remote device includes a signal generation module 1102, a reporting module 1104, and a signal response module 1106, wherein:

[0148] The signal generation module 1102 is configured to generate an abnormal access signal when an abnormal communication device accesses. The abnormal access signal carries the remote device address of the area where the abnormal communication device is located.

[0149] The reporting module 1104 is configured to report the abnormal access signal to the near-end device and forward it to the server through the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal and sends the network disconnection instruction to the first remote device corresponding to the remote device address.

[0150] The signal response module 1106 is configured to, in response to the network disconnection instruction fed back by the server, turn off the radio frequency signal in the area where the signal response module 1106 is located.

[0151] The security system based on the indoor distributed antenna system generates an abnormal access signal when detecting abnormal access of a communication device during network communication based on the indoor distributed antenna system, and reports the abnormal access signal to a server. The security system closes the radio frequency signal of the corresponding area by receiving a network disconnection instruction issued by the server, and performs a security network disconnection operation in the smallest unit to realize small-range targeted network disconnection and maximize the reduction of the influence of the communication network.

[0152] In one embodiment, the security system based on the indoor distributed antenna system further comprises a recovery request module and a signal opening module, wherein:

[0153] The recovery request module generates a signal recovery request if no abnormal communication device access is detected within a set duration, and forwards the signal recovery request to the server via the near-end device and receives a signal recovery instruction fed back by the server in response to the signal recovery request.

[0154] The signal opening module opens the radio frequency signal of the area in response to the signal recovery instruction.

[0155] Each module of the security system based on the indoor distributed antenna system can be realized by software, hardware, and a combination thereof, in whole or in part. Each module can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0156] In one embodiment, a computer device is provided, which can be a server, and the internal structure diagram thereof can be as shown in Figure 12 The computer device comprises a processor, a memory, and a network interface connected by a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the device address of the remote device, the normal communication device information, and the data in the above embodiments. The network interface of the computer device is used to communicate with the terminal outside through the network connection. The computer program is executed by the processor to implement a security method based on the indoor distributed antenna system.

[0157] Those skilled in the art can understand that, Figure 12The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0158] In an embodiment, a computer device is also provided, including a memory and a processor, the memory storing a computer program, and the processor implementing the steps in the above method embodiments when executing the computer program.

[0159] In an embodiment, a computer readable storage medium is provided, storing a computer program, and the computer program implementing the steps in the above method embodiments when executed by a processor.

[0160] In an embodiment, a computer program product is provided, including a computer program, and the computer program implementing the steps in the above method embodiments when executed by a processor.

[0161] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0162] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0163] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0164] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A security method based on an indoor distributed antenna system, the indoor distributed antenna system comprising a headend device, at least two remote devices connected to the headend device, characterized in that, The method comprises: receiving a reported abnormal access signal; wherein the abnormal access signal carries a remote device address of an area where an abnormal communication device is located; the abnormal access signal is generated by the remote device when it determines that an access communication device is abnormal by comparing device information of the access communication device obtained by a WIFI probe with preset normal device information; generating a network disconnection instruction based on the abnormal access signal and issuing the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off radio frequency signals in the area; based on the remote device address, if it is detected that at least one second remote device and the first remote device have overlapping coverage areas of radio frequency signals, a power adjustment instruction is generated; sending the power adjustment instruction to the at least one second remote device, so that the at least one second remote device adjusts the power of the radio frequency signals, and there is no overlapping coverage area of radio frequency signals with the first remote device.

2. The method of claim 1, wherein, If it is detected that at least one second remote device and the first remote device have overlapping coverage areas of radio frequency signals, a power adjustment instruction is generated, comprising: if it is detected that at least one second remote device and the first remote device have overlapping coverage areas of radio frequency signals, obtaining the location information of the abnormal communication device and the device address of the at least one second remote device; determining the center distance of the abnormal communication device and the at least one second remote device according to the location information and the device address of the at least one second remote device, respectively; based on the power adjustment amount determined by each of the center distances, a power adjustment instruction carrying the power adjustment amount is generated.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: in response to a reported signal recovery request, generating a first signal recovery instruction and a second signal recovery instruction; the signal recovery request is triggered by the first remote device when it does not detect an abnormal communication device access within a set duration; issuing the first signal recovery instruction to the first remote device, so that the first remote device turns on the radio frequency signals in the area; and issuing the second signal recovery instruction to the at least one second remote device, so that the at least one second remote device restores the power of the radio frequency signals.

4. The method of claim 1, wherein, The method further comprises: forwarding normal communication device information that is allowed to access the network to the at least two remote devices via the near-end device, so that each of the remote devices detects whether the access communication device is abnormal.

5. A security method based on an indoor distributed antenna system, the indoor distributed antenna system comprising a headend device, at least two remote devices connected to the headend device, characterized in that, The application is applied to a remote device, and the method comprises: when an abnormal communication device accesses, an abnormal access signal is generated; the abnormal access signal carries a remote device address of an area where an abnormal communication device is located; the abnormal access signal is generated by the remote device when it determines that an access communication device is abnormal by comparing device information of the access communication device obtained by a WIFI probe with preset normal device information; report the abnormal access signal to the near-end device, and forward the abnormal access signal to a server via the near-end device, so that the server generates a network disconnection instruction according to the abnormal access signal, and sends the network disconnection instruction to a first remote device corresponding to the remote device address; in response to the network disconnection instruction fed back by the server, turn off the radio frequency signal in the area where the first remote device is located; wherein, based on the remote device address, if it is detected that there is at least one second remote device that has overlapping coverage area with the radio frequency signal coverage area of the first remote device, a power adjustment instruction is generated; the power adjustment instruction is sent to the at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, and there is no overlapping coverage area with the radio frequency signal coverage area of the first remote device.

6. The method of claim 5, wherein, The method further comprises: if no abnormal communication device access is detected within a set duration, a signal recovery request is generated; the signal recovery request is forwarded to the server via the near-end device, and a signal recovery instruction fed back by the server in response to the signal recovery request is received; in response to the signal recovery instruction, the radio frequency signal in the area is turned on.

7. A security system based on an indoor distributed antenna system, characterized by, The security system comprises a signal receiving module and a signal sending module, wherein: The signal receiving module is used to receive the reported abnormal access signal; the abnormal access signal carries the remote device address of the area where the abnormal communication device is located; the abnormal access signal is generated when the remote device compares the device information of the communication device accessing the network obtained by the WIFI probe with the preset normal device information, and determines that the accessed communication device is abnormal access; The signal sending module is used to generate a network disconnection instruction based on the abnormal access signal, and send the network disconnection instruction to a first remote device corresponding to the remote device address, so that the first remote device turns off the radio frequency signal in the area; The detection module is used to generate a power adjustment instruction based on the remote device address, if it is detected that there is at least one second remote device that has overlapping coverage area with the radio frequency signal coverage area of the first remote device; The power adjustment instruction is sent to the at least one second remote device, so that the at least one second remote device adjusts the radio frequency signal power, and there is no overlapping coverage area with the radio frequency signal coverage area of the first remote device.

8. A security system based on an indoor distributed antenna system, characterized by, The security system comprises a signal generation module, a reporting module and a signal response module, wherein: The signal generation module is used to generate an abnormal access signal when an abnormal communication device accesses; the abnormal access signal carries the remote device address of the area where the abnormal communication device is located; the abnormal access signal is generated when the remote device compares the device information of the communication device accessing the network obtained by the WIFI probe with the preset normal device information, and determines that the accessed communication device is abnormal access; The reporting module is configured to report the abnormal access signal to a near-end device, forward the abnormal access signal to a server via the near-end device, and enable the server to generate a network disconnection instruction according to the abnormal access signal, and send the network disconnection instruction to a first remote device corresponding to the remote device address; The signal response module is configured to close the radio frequency signal in the region in response to the network disconnection instruction fed back by the server. The near-end device generates a power adjustment instruction based on the remote device address if it is detected that at least one second remote device and the first remote device have overlapping coverage areas of radio frequency signals, and sends the power adjustment instruction to the at least one second remote device, so that the at least one second remote device adjusts the power of the radio frequency signal, and the first remote device and the at least one second remote device do not have overlapping coverage areas of radio frequency signals. 9.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-8 when the computer program is executed by the processor. The processor executes the computer program to implement the steps of the method of any one of claims 1 to 6.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 6.

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