A police access system, method and electronic device

Abstract

This disclosure provides a police access system, method, and electronic device. The system utilizes a police terminal to send access requests to a portable station; the portable station receives the access requests and converts them into access radio frequency signals adapted for satellite communication; a ground satellite station receives the access radio frequency signals relayed by the AsiaSat satellite and demodulates and decodes them to obtain the decoded access request; a ground base station receives the decoded access request and performs key decryption and permission matching on at least one of the identity information, query instructions, and on-site audio / video data corresponding to the wired Ethernet or wired transmission signals; and sends an access request approval command to a mobile network; the mobile network receives the access request approval command, retrieves the police data corresponding to the access request, and sends it to the police terminal. This allows for adaptation to various application scenarios, effectively prevents information leakage, and improves access security.

Description

Technical Field

[0001] This disclosure relates to the field of data transmission technology, and in particular to a police access system, method and electronic device. Background Technology

[0002] Currently, police officers often face difficulties accessing the internet and retrieving police data when performing duties in scenarios without terrestrial mobile communication network coverage, such as in the field, remote mountainous areas, and disaster sites. Furthermore, existing police access methods are either only encrypted once or not at all, lacking effective protection during data transmission and thus reducing access security. In summary, existing police access methods are unsuitable for various application scenarios, pose a risk of information leakage, and compromise access security. Summary of the Invention

[0003] This disclosure provides a police access system, method, and electronic device to address, to some extent, the problems of existing police access systems being difficult to apply to various application scenarios, posing a risk of information leakage, and reducing access security.

[0004] According to one aspect of this disclosure, a police access system is provided, comprising: a police terminal for sending an access request to a portable station; the access request includes at least one of the following: identity information, query instructions, and on-site audio and video acquisition data; a portable station for receiving the access request and converting the access request into an access radio frequency signal adapted for satellite communication; and transmitting the access radio frequency signal to an AsiaSat satellite; the portable station includes at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; a ground satellite station for receiving the access radio frequency signal relayed by the AsiaSat satellite and demodulating and decoding the access radio frequency signal to obtain a decoded access request; a ground base station for receiving the decoded access request and converting the access request into a wired Ethernet or wired transmission signal adapted for terrestrial communication; performing key decryption and permission matching on at least one of the identity information, query instructions, and on-site audio and video acquisition data corresponding to the wired Ethernet or wired transmission signal; when key decryption is successful and permission matching is satisfied, sending an access request approval instruction to a mobile network; and a mobile network for receiving the access request approval instruction, retrieving police data corresponding to the access request, and sending the police data to the police terminal.

[0005] Furthermore, according to one aspect of the system disclosed herein, police data sent from a mobile network is received and presented; the presentation includes at least one of the following: screen display, voice broadcast, and pop-up prompts.

[0006] Furthermore, according to one aspect of the system disclosed herein, when the portable station is a portable wireless gateway with an integrated mobile board, the access request is converted into a first intermediate frequency signal using a signal conversion module built into the mobile board; the first intermediate frequency signal is converted into an access radio frequency signal using a satellite modulation module built into the mobile board; when the portable station is an integrated satellite communication terminal, the access request is encoded and frequency-converted using a satellite communication chip built into the integrated satellite communication terminal to obtain an access radio frequency signal; when the portable station is a field emergency communication box, the access radio frequency signal is obtained by amplifying and format-converting the signal using an emergency communication module built into the field emergency communication box.

[0007] Furthermore, according to one aspect of the system disclosed herein, the access radio frequency signal is amplified using a low-noise amplifier built into the ground satellite station to obtain an amplified access radio frequency signal; the amplified access radio frequency signal is converted into a second intermediate frequency signal using a frequency conversion module built into the ground satellite station; and the second intermediate frequency signal is demodulated and data restored using a decoding module built into the ground satellite station to obtain a decoded access request.

[0008] Furthermore, according to one aspect of the system disclosed herein, a preset police first key is obtained; the first key is an authentication key; the first key includes at least one of the following: a police officer identity encryption key, a terminal binding key, and a unit key; using the key decryption module built into the ground base station and the first key, the identity information is decrypted to obtain an identity identifier and a first access level; the identity identifier and the first access level are matched with police officer database information respectively; when both the identity identifier and the first access level are successfully matched, an access request authorization instruction is sent to the mobile network.

[0009] Furthermore, according to one aspect of the system disclosed herein, a preset police second key is obtained; the second key is a business key; the second key includes at least one of the following: a personnel information query key, a vehicle information query key, and a case information query key; the query command is decrypted using the key decryption module and the second key built into the ground base station to obtain the query object and query scope; the second permission level corresponding to the query object and query scope is determined; when the second permission level matches the preset query permission mapping table, an access request pass command is sent to the mobile network.

[0010] Furthermore, according to one aspect of the system disclosed herein, a preset police third key is obtained; the third key is an audio and video encryption key; the third key includes at least one of the following: an on-site law enforcement audio and video decryption key and an audio and video transmission encryption key; using the key decryption module built into the ground base station and the third key, the on-site audio and video data is decrypted to obtain the original audio and video data; the third access level of the original audio and video data is determined; when the third access level meets the preset on-site law enforcement access or transmission access, an access request pass instruction is sent to the mobile network.

[0011] Furthermore, according to one aspect of the system disclosed herein, the service scheduling module built into the mobile network retrieves the police data corresponding to the access request based on the access request and sends it to the police terminal.

[0012] According to another aspect of this disclosure, a police access method is provided, comprising: sending an access request to a portable station using a police terminal; the access request including at least one of the following: identity information, query instructions, and on-site audio and video acquisition data; receiving the access request using the portable station and converting the access request into an access radio frequency signal adapted for satellite communication; transmitting the access radio frequency signal to an AsiaSat satellite; the portable station including at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; receiving the access radio frequency signal relayed by the AsiaSat satellite using a ground satellite station, and demodulating and decoding the access radio frequency signal to obtain a decoded access request; receiving the decoded access request using a ground base station and converting the access request into a wired Ethernet or wired transmission signal adapted for ground communication; performing key decryption and permission matching on at least one of the identity information, query instructions, and on-site audio and video acquisition data corresponding to the wired Ethernet or wired transmission signal; when key decryption is successful and permission matching is satisfied, sending an access request approval instruction to a mobile network; receiving the access request approval instruction using the mobile network and retrieving the police data corresponding to the access request; and sending the police data to the police terminal.

[0013] According to another aspect of this disclosure, an electronic device is provided, comprising: a memory for storing computer-readable instructions; and a processor for executing the computer-readable instructions, causing the electronic device to perform the method as described in any embodiment of one aspect.

[0014] This disclosure provides a police access system, method, and electronic device. The system uses a police terminal to send an access request to a portable station. The access request includes at least one of the following: identity information, query instructions, and on-site audio / video data. The portable station receives the access request and converts it into an access radio frequency signal adapted for satellite communication; it then transmits the access radio frequency signal to the AsiaSat satellite. The portable station includes at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; a ground satellite station receives the access radio frequency signal relayed by the AsiaSat satellite and demodulates and decodes the access radio frequency signal to obtain a decoded access request; a ground base station receives the decoded access request and converts it into a wired Ethernet or wired transmission signal adapted for terrestrial communication; key decryption and permission matching are performed on at least one of the identity information, query instructions, and on-site audio / video data corresponding to the wired Ethernet or wired transmission signal; when key decryption is successful and permission matching is satisfied, an access request approval instruction is sent to the mobile network; the mobile network receives the access request approval instruction, retrieves the police data corresponding to the access request, and sends the police data to the police terminal. In this way, compared to existing police access methods, this disclosure can overcome the limitations of terrestrial network coverage through satellite communication links, enabling normal internet access and retrieval of police data in scenarios without terrestrial mobile communication networks. Simultaneously, it employs a dual protection mechanism combining hierarchical key decryption and access control matching, replacing existing single-encryption or unencrypted methods, strengthening the protection of data transmission and improving access security. In summary, the technical solution provided by this disclosure can adapt to various application scenarios, effectively preventing information leakage and improving access security.

[0015] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0016] The above and other objects, features, and advantages of this disclosure will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 A structural block diagram of a police access system provided in this embodiment of the disclosure; Figure 2 This is a hardware block diagram of an electronic device provided in an embodiment of the present disclosure. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this disclosure more apparent, exemplary embodiments according to this disclosure will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments of this disclosure. It should be understood that this disclosure is not limited to the exemplary embodiments described herein.

[0019] Currently, police officers often face difficulties accessing the internet and retrieving police data when performing duties in scenarios without terrestrial mobile communication network coverage, such as in the field, remote mountainous areas, and disaster sites. Furthermore, existing police access methods are either only encrypted once or not at all, lacking effective protection during data transmission and thus reducing access security. In summary, existing police access methods are unsuitable for various application scenarios, pose a risk of information leakage, and compromise access security.

[0020] Therefore, in response to the aforementioned problems, this disclosure provides a police access system. Compared with existing police access methods, this disclosure can overcome the limitations of terrestrial network coverage through satellite communication links, enabling normal internet access and retrieval of police data in scenarios without terrestrial mobile communication networks. At the same time, it adopts a dual protection mechanism of hierarchical key decryption combined with permission matching, replacing the existing single-encryption or unencrypted methods, strengthening the protection of data transmission process and improving access security.

[0021] First, this disclosure also provides a police access system. Figure 1 A structural block diagram of a police access system provided in this disclosure embodiment is shown below. Figure 1 As shown, the police access device 100 includes: Police terminal 101 is used to send an access request to the portable station; the access request includes at least one of the following: identity information, query instructions, and on-site audio and video data; Portable station 102 is used to receive access requests and convert the access requests into access radio frequency signals adapted to satellite communications; and to send access radio frequency signals to Asia-Pacific satellites; the portable station includes at least one of the following: a portable wireless gateway with integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; Ground satellite station 103 is used to receive access radio frequency signals relayed by Asia Pacific satellites, and to demodulate and decode the access radio frequency signals to obtain the decoded access request. Ground base station 104 is used to receive the decoded access request and convert the access request into a wired Ethernet or wired transmission signal adapted to ground communication; it performs key decryption and permission matching on at least one of the identity information, query instructions and on-site audio and video acquisition data corresponding to the wired Ethernet or wired transmission signal; when the key decryption is successful and the permission matching is satisfied, it sends an access request approval instruction to the mobile network. Mobile network 105 is used to receive access requests and retrieve the corresponding police data via instructions; and to send the police data to the police terminal.

[0022] In this disclosure, a police terminal can be understood as a portable smart terminal device carried by police officers when performing their duties. Its form may include at least one of the following: a police communication device, a law enforcement recorder, or a portable tablet computer. It can send corresponding access requests to the portable station according to the law enforcement needs of the police officers. An access request can be understood as a business request initiated by a police officer to the police access system of this disclosure to fulfill various police law enforcement needs. The access requests of this disclosure include, but are not limited to, at least one of the following: identity information, query instructions, and on-site audio and video data collection. Specifically, identity information is used to verify the legitimate identity and corresponding law enforcement authority of the police officer initiating the request, preventing unauthorized personnel from accessing the system and obtaining police data; query instructions are used by police officers to retrieve various police business-related data, such as suspect identity information, vehicle registration information, historical case records, and police law enforcement regulations, providing data support for law enforcement decision-making; on-site audio and video data collection is used by police officers to upload on-site audio and video records collected during law enforcement, enabling the retention and retrospective analysis of the law enforcement process, and may include on-site law enforcement videos, on-site photos, and voice recordings.

[0023] In this disclosure, a portable station can be understood as a dedicated communication device with mobile deployment capabilities, capable of signal format conversion and satellite communication relay. Its core function is to connect police terminals with Asia-Pacific satellites, solving the problem that police terminal signals cannot directly access satellite communication links, realizing the format conversion of access requests and satellite signal transmission, ensuring that requests from police terminals can be successfully transmitted to ground-side equipment in scenarios without terrestrial mobile communication network coverage. The portable station in this disclosure includes, but is not limited to, at least one of the following: a portable wireless gateway with integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box. Among them, the portable wireless gateway with integrated mobile board can receive police terminal signals and complete format conversion through the built-in mobile board; the integrated satellite communication terminal can directly encode and frequency convert access requests; and the field emergency communication box can amplify signals to adapt to satellite transmission, as detailed below.

[0024] In this disclosure, a ground satellite station can be understood as a core communication device deployed on the ground specifically for signal interaction with Asia-Pacific satellites. It serves as a crucial link between the satellite communication link and the terrestrial communication network. Its main function is to receive access radio frequency signals relayed by Asia-Pacific satellites, demodulate and decode these signals to reconstruct the original access request, and then transmit the processed access request to the ground base station, thus realizing the conversion and transmission of satellite signals to terrestrial signals. Specifically, the ground satellite station can incorporate components such as a low-noise amplifier, a frequency conversion module, and a decoding module. The low-noise amplifier amplifies the weak radio frequency signals relayed by the satellite and removes noise interference generated during signal transmission. The frequency conversion module converts the amplified radio frequency signal into an intermediate frequency signal for subsequent decoding processing. The decoding module demodulates and decodes the intermediate frequency signal to reconstruct core data such as identity information and query instructions contained in the access request, ensuring that the ground base station can accurately identify and process the access request.

[0025] In this disclosure, the terrestrial base station can be understood as a connecting hub between the terrestrial wired communication network and the satellite communication link. Its core function is to perform secondary conversion of signal formats, secure verification of access requests, and forwarding of instructions, making it a crucial link in ensuring the security of police access. Specifically, the terrestrial base station first receives the decoded access request transmitted by the terrestrial satellite station, converting the request signal from a format adapted for satellite communication to a format adapted for terrestrial wired Ethernet or other wired transmission methods, ensuring that the request can be transmitted in the terrestrial communication network. Subsequently, the terrestrial base station calls its built-in key decryption module to decrypt the identity information, query instructions, and on-site audio and video data in the access request using corresponding hierarchical keys. Different types of data correspond to different decryption keys, achieving hierarchical protection. At the same time, the terrestrial base station compares the decrypted identity information and request content with a preset police officer database and permission rule base to complete permission matching and verify whether the police officer has the corresponding data access permissions. When the key decryption is successful and the permission matching meets the preset rules, the terrestrial base station can send an access request approval instruction to the mobile network, allowing the mobile network to retrieve relevant police data. If decryption fails or the permissions do not match, the request is rejected, ensuring system access security.

[0026] In this disclosure, the mobile network can be understood as a core network specifically used for the scheduling and transmission of police business data, which can integrate core components such as a business scheduling module, a data storage module, and a data transmission module. Specifically, after receiving an access request instruction from a ground base station, the mobile network parses the access request type corresponding to the instruction through the business scheduling module to determine the type of police business data that the police officer needs to retrieve. Subsequently, the mobile network establishes a connection with pre-set police business databases, audio and video storage servers, and other data resources, and retrieves the corresponding police business data according to the parsing results. After retrieval, the mobile network transmits the police business data to the police terminal that initiated the request, ensuring that the police officer can obtain the required police data in real time and complete the entire police access process.

[0027] It should be noted that the police terminal 101 disclosed herein can also be used for: Receive police data sent from the mobile network and present the police data; the presentation includes at least one of the following: screen display, voice broadcast, and pop-up prompts.

[0028] Specifically, after receiving police business data transmitted from the mobile network, the police terminal can present the data content to officers in various ways, depending on the data type and usage scenario: It can display text and image-based police data such as personnel information, vehicle information, and case details on a screen; it can automatically read aloud key information such as query results and identity verification conclusions via voice broadcast, allowing officers to quickly access content when it's inconvenient to view the screen; and it can provide real-time reminders about important matters such as abnormal information, permission verification results, and audio / video upload status via pop-up prompts. The specific presentation method can be flexibly configured according to system presets or user preferences, and is not limited here.

[0029] The following will explain in detail how different types of portable stations connect to Asia-Pacific satellites, including: When the portable station is a portable wireless gateway with an integrated mobile board, the access request is converted into a first intermediate frequency signal using the signal conversion module built into the mobile board; the first intermediate frequency signal is converted into an access radio frequency signal using the satellite modulation module built into the mobile board. When the portable station is an integrated satellite communication terminal, the satellite communication chip built into the integrated satellite communication terminal is used to encode and frequency-convert the access request to obtain the access radio frequency signal; When the portable station is a field emergency communication box, the built-in emergency communication module in the field emergency communication box is used to amplify and convert the signal to obtain the access radio frequency signal.

[0030] In one embodiment of this disclosure, when the portable station is a portable wireless gateway with an integrated mobile board, after receiving an access request, the portable wireless gateway with the integrated mobile board first filters the access request through its built-in signal receiving unit to remove invalid noise from the request signal. Then, the filtered access request is transmitted to the signal conversion module built into the mobile board. After processing by the module, a first intermediate frequency (IF) signal is obtained. Next, after converting the first IF signal into an access radio frequency (RF) signal, the RF signal is amplified by a built-in power amplification module to ensure that the signal can be transmitted over long distances to the Asia-Pacific satellite. Simultaneously, a built-in anti-interference module can be used to remove noise from the RF signal, preventing signal distortion due to external interference during transmission, further ensuring stable signal transmission to the Asia-Pacific satellite.

[0031] In another embodiment of this disclosure, when the portable station is an integrated satellite communication terminal, the integrated satellite communication terminal can first perform parity check encoding on the access request through its built-in satellite communication chip to obtain an encoded access request signal. Then, the frequency band of the encoded access request signal is converted to a communication frequency band supported by Asia Pacific Satellite (APSSS) through the chip's built-in frequency conversion unit, thereby generating an access radio frequency signal adapted for satellite transmission. This ensures that the generated access radio frequency signal can be accurately received and forwarded by APSSS. Simultaneously, the parity check encoding can also be used to verify data integrity when the ground satellite station receives signals, reducing data loss during transmission.

[0032] In another embodiment of this disclosure, when the portable station is a field emergency communication box, the field emergency communication box can first receive the access request sent by the police terminal through its built-in signal receiving unit, and perform preliminary filtering on the received request signal to remove external interference noise. Subsequently, using the emergency communication module built into the field emergency communication box, the access request received and processed by the signal receiving unit is amplified to compensate for the signal attenuation problem in complex field environments. Then, the amplified request signal is format converted to adapt it to a signal format suitable for satellite transmission. Afterwards, the signal format adaptation is completed by the signal conversion unit built into the emergency communication module to generate a signal that meets the requirements of satellite transmission. It can also be combined with the frequency conversion processing function of the module to convert the adjusted signal into a frequency band suitable for Asia-Pacific satellite reception, and finally obtain the access radio frequency signal.

[0033] The following will explain in detail how the ground satellite station decodes the access request, including: The access radio frequency signal is amplified by the low-noise amplifier built into the ground satellite station to obtain the amplified access radio frequency signal. The amplified access radio frequency signal is converted into a second intermediate frequency signal using the built-in frequency conversion module of the ground satellite station; The second intermediate frequency signal is demodulated and data is restored using the built-in decoding module of the ground satellite station to obtain the decoded access request.

[0034] Specifically, after receiving the access radio frequency (RF) signal from the portable station, the ground satellite station first activates its built-in low-noise amplifier to amplify the weak RF signal, filtering out noise interference generated during signal transmission to ensure the signal strength meets the requirements of subsequent processing, thus obtaining the amplified access RF signal. Subsequently, the frequency conversion module is activated to perform frequency band conversion on the amplified RF signal, converting it into a second intermediate frequency (IF) signal suitable for decoding, reducing the signal frequency to facilitate subsequent decoding operations. Finally, the decoding module is activated, using a preset decoding algorithm to demodulate the second IF signal, parsing the request information contained in the signal, restoring the original access request content, and simultaneously verifying the integrity of the decoded request information. After confirming that there is no data loss or distortion, a directly processable access request is formed, completing the entire decoding process. The decoding algorithm includes, but is not limited to, at least one of the following: convolutional code decoding algorithm and Turbo code decoding algorithm. Specific details can be found in existing technologies and will not be elaborated upon here.

[0035] The following will elaborate on three scenarios in which ground base stations perform key decryption and authorization matching: First scenario: Decryption and permission matching based on authentication keys: Obtain the preset police first key; the first key is an authentication key; the first key includes at least one of the following: police officer identity encryption key, terminal binding key, and unit key; Using the key decryption module and the first key built into the ground base station, the identity information is decrypted to obtain the identity identifier and the first level of access. The identity identifier and the first level of authority are matched with the police officer database information respectively; When the identity identifier and the first level of access are both successfully matched, an access request authorization instruction is sent to the mobile network.

[0036] In this disclosure, the first key can be understood as a core encryption key used to verify the legitimacy of a police officer's identity, confirm the ownership of the terminal, and the police unit to which it belongs. It is the basic key used by the ground base station to grant identity access to police officers and terminals accessing the mobile network. The first key in this disclosure may include, but is not limited to, at least one of the following: a police officer's identity encryption key, a terminal binding key, and a unit key. Among them, the police officer's identity encryption key is bound to the police officer's personal identity information (such as police number, name) and is used to directly verify the police officer's personal identity; the terminal binding key is bound to the hardware identifier of the police officer's law enforcement terminal (such as a law enforcement recorder, police mobile phone) to prevent unauthorized terminals from accessing the network; the unit key is bound to the police unit to which the police officer belongs (such as a police station, criminal investigation brigade) and is used to confirm the legitimacy of the police entity to which the terminal belongs.

[0037] In this disclosure, the first access level can be understood as the basic access permission level set based on the police officer's identity, position and affiliated unit. It is used to determine whether the police officer has the basic qualifications to access the mobile network. It can be divided into basic access permissions, departmental access permissions, etc., with different levels corresponding to different basic access ranges to the mobile network.

[0038] Specifically, when ground base stations perform key decryption and authorization matching, it includes: The ground base station first retrieves the preset police first key from its local preset key library, and simultaneously receives encrypted identity information (including police officer's personal information, terminal hardware information, and unit information) sent by the police officer's law enforcement terminal. The key decryption module calls the first key to perform symmetric decryption on the encrypted identity information, parsing out the police officer's badge number, the terminal's International Mobile Equipment Identity (IMEI) code, the unit code, and other identity identifiers, as well as the corresponding first access level. Then, the identity identifiers are compared one by one with the filing information (badge number, terminal binding relationship, unit affiliation) in the police officer's database, while verifying whether the first access level meets the basic access requirements of the mobile network. If the identity identifiers match completely and the first access level meets the requirements, an access request pass instruction is generated and sent to the terminal through the mobile network interface, allowing the terminal to access the mobile network to carry out basic police operations. If the identity identifiers do not match or the access level does not meet the requirements, access is rejected and an identity verification failure message is returned.

[0039] The second scenario: decryption and permission matching based on the business query key: Obtain a preset police second key; the second key is a business key; the second key includes at least one of the following: a personnel information query key, a vehicle information query key, and a case information query key; The query command is decrypted using the key decryption module and second key built into the ground base station to obtain the query object and query range; Determine the second permission level corresponding to the query object and query scope; When the second permission level matches the preset query permission mapping table, an access request authorization instruction is sent to the mobile network.

[0040] In this disclosure, the second key can be understood as a dedicated encryption key used to decrypt various police service query commands initiated by police officers, ensuring the security and privacy of query operations. Only authorized police officers can use the corresponding service key to initiate queries, preventing query commands from being tampered with or stolen. The second key in this disclosure may include, but is not limited to, at least one of the following: a personnel information query key, a vehicle information query key, and a case information query key. Specifically, the personnel information query key is used to decrypt query commands related to population information and migrant population registration; the vehicle information query key is used to decrypt query commands related to motor vehicle registration and traffic violation records; and the case information query key is used to decrypt query commands related to case filing and case progress. Different service keys correspond to different query permission ranges and are not interchangeable.

[0041] In this disclosure, the second level of authority can be understood as the level of business query authority set based on the job functions of police officers. It is used to define the scope of business and information depth that police officers can query. For example, ordinary police officers only have basic personnel / vehicle information query authority, while criminal investigation police officers have case information query authority. The level of authority strictly corresponds to the job functions.

[0042] Specifically, when ground base stations perform key decryption and authorization matching, it includes: The ground base station receives the encrypted query command sent by the police officer's terminal and retrieves the second key corresponding to the query service from the key library (e.g., retrieving the vehicle information query key for vehicle information queries). The key decryption module uses the second key to decrypt the encrypted query command, extracting the query object (e.g., ID number, license plate number, case number) and query scope (e.g., local jurisdiction, province-wide). Based on the query object and query scope, it matches a preset query permission mapping table to determine the second permission level required for the query operation (e.g., querying cross-city vehicle information requires intermediate query permission). It verifies whether the current permission level of the police officer initiating the query matches the required second permission level. If they match, it sends an access request to the mobile network, allowing the terminal to access the police business database to perform the query operation. If the permission levels do not match, the query is rejected and an insufficient permission prompt is displayed.

[0043] The third scenario: Decryption and permission matching based on audio / video encryption keys: Obtain a preset police third key; the third key is an audio and video encryption key; the third key includes at least one of the following: an on-site law enforcement audio and video decryption key and an audio and video transmission encryption key; Using the key decryption module built into the ground base station and a third key, the on-site audio and video data is decrypted to obtain the original audio and video data; Determine the third access level for the raw audio and video data; When the third level of access meets the preset on-site law enforcement or transmission permissions, an access request is sent to the mobile network.

[0044] In this disclosure, the third key can be understood as a dedicated key used to encrypt and decrypt on-site law enforcement audio and video data, ensuring that the audio and video data is not leaked or tampered with during acquisition and transmission. It is the core guarantee for the security of on-site law enforcement audio and video data. The third key in this disclosure may include, but is not limited to, at least one of the following: an on-site law enforcement audio and video decryption key and an audio and video transmission encryption key. The on-site law enforcement audio and video decryption key is used to decrypt the encrypted audio and video data collected and uploaded by the police officer's law enforcement terminal, restoring the original law enforcement footage and sound; the audio and video transmission encryption key is used to perform secondary encryption on the decrypted original audio and video data to ensure the security of the data during mobile network transmission and prevent interception or tampering during transmission.

[0045] In this disclosure, the third permission level can be understood as the audio and video access and transmission permission level set based on the police officer's law enforcement position and law enforcement scenario. It is used to define whether the police officer has the permission to collect, transmit and view on-site law enforcement audio and video data. For example, front-line law enforcement police officers have the permission to collect and transmit audio and video, while police officers in the command center have the permission to view audio and video. Different permission levels correspond to different audio and video operation permissions.

[0046] Specifically, when ground base stations perform key decryption and authorization matching, it includes: The ground base station receives encrypted on-site audio and video data uploaded by police officers' law enforcement terminals and retrieves the preset police third key (including decryption and transmission encryption keys). First, it uses the on-site law enforcement audio and video decryption key to decrypt the encrypted audio and video data, restoring the original data. Then, based on the audio and video capture scenario (e.g., ordinary patrol, major case enforcement) and the officer's position, it determines the corresponding third access level for the original audio and video data. It checks whether the officer's current access level meets the third access level and also confirms whether the data transmission requirement meets the preset transmission access requirements (or does not). If the third access level is met, it uses the audio and video transmission encryption key to re-encrypt the original audio and video data and sends an access request to the mobile network, allowing the encrypted audio and video data to be transmitted to the backend command center or storage server via the mobile network. If the third access level is not met, it refuses transmission and reports insufficient audio and video transmission access.

[0047] The following will explain in detail how the mobile network sends police data to police terminals, including: The mobile network's built-in service scheduling module retrieves the police data corresponding to the access request based on the access request and sends it to the police terminal.

[0048] Specifically, after the mobile network receives an access request from a terrestrial base station via an instruction, the built-in service scheduling module parses the instruction and extracts the core information contained within, including the police officer's identification, the terminal's IMEI code, the type of access service (such as identity verification, service query, audio / video transmission), and the corresponding permission level. Based on the parsed service type, the service scheduling module precisely connects to the corresponding police data resource pool (such as the police officer identity registration pool, personnel / vehicle / case information database, and audio / video storage server), retrieving police data that perfectly matches the access request. Simultaneously, the retrieved data is encrypted (using an encryption key corresponding to the terminal to ensure data transmission security). Subsequently, the service scheduling module sends the encrypted police data to the police terminal with the corresponding IMEI code via a dedicated mobile network transmission channel. Upon receiving the data, the terminal uses its built-in decryption module and decryption key to decrypt the data, restoring the original police data for police officers to view or use. Simultaneously, the mobile network service scheduling module can also record log information such as data transmission time, receiving terminal, and data type for subsequent traceability and verification.

[0049] This disclosure also provides a method for police access, including: The police terminal sends an access request to the portable station; the access request includes at least one of the following: identity information, query instructions, and on-site audio and video data; The portable station receives access requests and converts them into access radio frequency signals adapted for satellite communication; it also transmits access radio frequency signals to Asia-Pacific satellites. The portable station includes at least one of the following: a portable wireless gateway with integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box. The system uses a ground satellite station to receive access radio frequency signals relayed by Asia-Pacific satellites, and demodulates and decodes these signals to obtain the decoded access request. The system receives the decoded access request using a ground base station and converts it into a wired Ethernet or wired transmission signal adapted for ground communication. It performs key decryption and permission matching on at least one of the identity information, query instructions, and on-site audio and video data corresponding to the wired Ethernet or wired transmission signal. When the key decryption is successful and the permission matching is satisfied, it sends an access request approval instruction to the mobile network. The system uses a mobile network to receive access requests and retrieves the corresponding police data via instructions; then it sends the police data to the police terminal.

[0050] Figure 2 This is a hardware block diagram of an electronic device provided according to an embodiment of the present disclosure. The electronic device 200 according to an embodiment of the present disclosure includes at least a processor; and a memory for storing computer-readable instructions. When the computer-readable instructions are loaded and executed by the processor, the processor performs the police access method described in any of the preceding embodiments of the present disclosure.

[0051] Figure 2 The illustrated electronic device 200 specifically includes a central processing unit (CPU) 201, a graphics processing unit (GPU) 202, and a memory 203. These units are interconnected via a bus 204. The CPU 201 and / or GPU 202 can function as the aforementioned processor, and the memory 203 can function as the aforementioned memory storing computer-readable instructions. Furthermore, the electronic device 200 may also include a communication unit 205, a storage unit 206, an output unit 207, an input unit 208, and an external device 209, all of which are also connected to the bus 204.

[0052] In summary, this disclosure provides a police access system, method, and electronic device. This disclosure utilizes a police terminal to send access requests to a portable station. The access request includes at least one of the following: identity information, query instructions, and on-site audio / video data. The portable station receives the access request and converts it into an access radio frequency signal adapted for satellite communication; it then transmits the access radio frequency signal to the AsiaSat satellite. The portable station includes at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; a ground satellite station receives the access radio frequency signal relayed by the AsiaSat satellite and demodulates and decodes the signal to obtain a decoded access request; a ground base station receives the decoded access request and converts it into a wired Ethernet or wired transmission signal adapted for terrestrial communication; key decryption and permission matching are performed on at least one of the identity information, query instructions, and on-site audio / video data corresponding to the wired Ethernet or wired transmission signal; when key decryption is successful and permission matching is satisfied, an access request approval instruction is sent to the mobile network; the mobile network receives the access request approval instruction, retrieves the police data corresponding to the access request, and sends the police data to the police terminal. In this way, compared to existing police access methods, this disclosure can overcome the limitations of terrestrial network coverage through satellite communication links, enabling normal internet access and retrieval of police data in scenarios without terrestrial mobile communication networks. Simultaneously, it employs a dual protection mechanism combining hierarchical key decryption and access control matching, replacing existing single-encryption or unencrypted methods, strengthening the protection of data transmission and improving access security. In summary, the technical solution provided by this disclosure can adapt to various application scenarios, effectively preventing information leakage and improving access security.

[0053] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0054] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0055] The block diagrams of devices, apparatuses, devices, and systems disclosed herein are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0056] Additionally, as used herein, the "or" used in a list of items beginning with "at least one" indicates a separate list, such that a list of, for example, "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not imply that the described example is preferred or better than other examples.

[0057] It should also be noted that in the systems and methods of this disclosure, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions to this disclosure.

[0058] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufactures, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufactures, events, means, methods, or actions within their scope.

[0059] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0060] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A police access system, characterized in that, include: A police terminal is used to send an access request to a portable station; the access request includes at least one of the following: identity information, query instructions, and on-site audio and video data; The portable station is used to receive the access request and convert the access request into an access radio frequency signal adapted for satellite communication; and to send the access radio frequency signal to the Asia-Pacific satellite; the portable station includes at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; A ground satellite station is used to receive the access radio frequency signal relayed by the Asia-Pacific satellite, and to demodulate and decode the access radio frequency signal to obtain the decoded access request. A ground base station is used to receive the decoded access request and convert the access request into a wired Ethernet or wired transmission signal adapted for terrestrial communication. For at least one of the identity information, query instructions, and on-site audio and video acquisition data corresponding to the wired Ethernet or wired transmission signal, key decryption and permission matching are performed respectively; when key decryption is successful and permission matching is satisfied, an access request authorization instruction is sent to the mobile network; The mobile network is used to receive the access request, retrieve the police data corresponding to the access request via an instruction, and send the police data to the police terminal.

2. The system according to claim 1, characterized in that, The police terminal is also used for: The system receives police data sent by the mobile network and presents the police data; the presentation includes at least one of the following: screen display, voice broadcast, and pop-up prompt.

3. The system according to claim 1, characterized in that, When the portable station is a portable wireless gateway with integrated mobile board, the access request is converted into a first intermediate frequency signal using the signal conversion module built into the mobile board. The first intermediate frequency signal is converted into the access radio frequency signal using the satellite modulation module built into the mobile board; When the portable station is the integrated satellite communication terminal, the access request is encoded and frequency-converted using the satellite communication chip built into the integrated satellite communication terminal to obtain the access radio frequency signal; When the portable station is the field emergency communication box, the emergency communication module built into the field emergency communication box is used to amplify and convert the signal to obtain the access radio frequency signal.

4. The system according to claim 1, characterized in that, The access radio frequency signal is amplified using a low-noise amplifier built into the ground satellite station to obtain the amplified access radio frequency signal; The amplified access radio frequency signal is converted into a second intermediate frequency signal using the frequency conversion module built into the ground satellite station; The second intermediate frequency signal is demodulated and data restored using the built-in decoding module of the ground satellite station to obtain the decoded access request.

5. The system according to claim 1, characterized in that, Obtain a preset police first key; the first key is an authentication key; the first key includes at least one of the following: a police officer's identity encryption key, a terminal binding key, and a unit key; Using the key decryption module built into the ground base station and the first key, the identity information is decrypted to obtain the identity identifier and the first permission level; The identity identifier and the first permission level are matched with the police officer database information respectively; When the identity identifier and the first permission level both match successfully, an access request approval instruction is sent to the mobile network.

6. The system according to claim 1, characterized in that, Obtain a preset police second key; the second key is a business key; the second key includes at least one of the following: a personnel information query key, a vehicle information query key, and a case information query key; The query command is decrypted using the key decryption module built into the ground base station and the second key to obtain the query object and query range; Determine the second permission level corresponding to the query object and the query scope; When the second permission level matches the preset query permission mapping table, the access request approval instruction is sent to the mobile network.

7. The system according to claim 1, characterized in that, Obtain a preset police third key; the third key is an audio and video encryption key; the third key includes at least one of the following: an on-site law enforcement audio and video decryption key and an audio and video transmission encryption key; The on-site audio and video data is decrypted using the key decryption module built into the ground base station and the third key to obtain the original audio and video data; Determine the third access level for the raw audio and video data; When the third permission level meets the preset on-site law enforcement permission or transmission permission, the access request pass instruction is sent to the mobile network.

8. The system according to claim 1, characterized in that, The mobile network's built-in service scheduling module retrieves the police data corresponding to the access request based on the access request and sends it to the police terminal.

9. A method for police access, characterized in that, include: The police terminal sends an access request to the portable station; the access request includes at least one of the following: identity information, query instructions, and on-site audio and video data; The portable station receives the access request and converts the access request into an access radio frequency signal adapted for satellite communication; it then transmits the access radio frequency signal to the Asia-Pacific satellite; the portable station includes at least one of the following: a portable wireless gateway with an integrated mobile board, an integrated satellite communication terminal, and a field emergency communication box; The access radio frequency signal relayed by the Asia-Pacific satellite is received by a ground satellite station, and the access radio frequency signal is demodulated and decoded to obtain the decoded access request. The system receives the decoded access request using a ground base station and converts the access request into a wired Ethernet or wired transmission signal adapted for ground communication. At least one of the identity information, the query command, and the on-site audio and video acquisition data corresponding to the wired Ethernet or wired transmission signal is decrypted and matched for permissions. When the key decryption is successful and the permission matching is satisfied, an access request approval command is sent to the mobile network. The system uses a mobile network to receive the access request and, through instructions, retrieves the police data corresponding to the access request; then sends the police data to the police terminal.

10. An electronic device, characterized in that, include: Memory, used to store computer-readable instructions; and A processor for executing the computer-readable instructions, causing the electronic device to perform the method as described in claim 9.

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