Network access system for hybrid access of optical fiber network and 5G network

Abstract

The invention discloses a network access system for hybrid access of an optical fiber network and a 5G network. The network access system comprises a passive optical network module and a 5G cellular module, the 5G cellular module comprises a modulation-demodulation unit and an application processor unit; the passive optical network module is connected with the application processor unit; the passive optical network module is used for receiving an optical fiber network signal sent by an optical line terminal of an operator and sending the optical fiber network signal to the application processor unit when the optical fiber network is normal; the modulation and demodulation unit is used for switching a current network communication mode from optical fiber network communication to 5G network communication when an optical fiber network is interrupted, receiving a 5G network signal sent by an operator base station and sending the 5G network signal to the application processor unit; and the application processor unit is used for forwarding the optical fiber network signal or the 5G network signal to the corresponding user equipment. According to the invention, the requirements of high reliability and permanent net breaking can be met.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular to a network access system for hybrid access of an optical fiber network and a 5G network. Background Art

[0002] Current network access commonly uses a fiber-optic access point (ONU) to connect to an optical network unit (ONU). This point is then connected to a router and transmitted to the user via WiFi, or forwarded to a gateway via a mini OLT (mini optical line terminal) before being transmitted to the user. In this solution, the ONU's external optical network has a certain probability of abnormal interruption for various reasons. Once the ONU's external optical network is abnormally interrupted, users will be unable to access the network. This situation is fatal for many banks, financial institutions, and small and medium-sized companies, resulting in significant losses. Therefore, there is an urgent need to design a network access system to solve the problem of users being unable to access the network due to interruptions in the ONU's external optical network. Summary of the Invention

[0003] The present invention provides a network access system with hybrid access of optical fiber network and 5G network to solve the technical problem that the interruption of optical fiber network outside ONU will cause users to be unable to access the network.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a network access system for hybrid access of optical fiber network and 5G network, including: a passive optical network module and a 5G cellular module;

[0005] The 5G cellular module includes a modem unit and an application processor unit;

[0006] The passive optical network module is connected to the application processor unit;

[0007] The passive optical network module is used to communicate with the operator's optical line terminal through the optical network when the optical network is normal, receive the optical network signal sent by the operator's optical line terminal, and send the received optical network signal to the application processor unit;

[0008] The modem unit is configured to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, receive the 5G network signal sent by the operator base station, and send the received 5G network signal to the application processor unit;

[0009] The application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment.

[0010] As a preferred solution, it also includes: a small optical line terminal module and a WiFi module;

[0011] The small optical line terminal module and the WiFi module are both connected to the application processor unit;

[0012] The application processor unit is configured to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment, including:

[0013] The application processor unit is configured to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the small optical line terminal module and the WiFi module;

[0014] The WiFi module is used to send the received optical fiber network signal or 5G network signal to the corresponding user equipment;

[0015] The small optical line terminal module is used to send the received optical fiber network signal or 5G network signal to the corresponding slave gateway, so that the slave gateway forwards the optical fiber network signal or 5G network signal to the corresponding user equipment.

[0016] As a preferred solution, the passive optical network module includes: a PON control unit, an optical driver unit and a BOSA unit;

[0017] The BOSA unit includes: a light receiving subunit;

[0018] The optical receiving subunit is used to receive the optical fiber network signal sent by the operator's optical line terminal, perform photoelectric conversion on the optical fiber network signal, convert the optical fiber network signal from an optical signal to an electrical signal, and send the converted optical fiber network signal to the optical driving unit;

[0019] The optical driving unit is configured to amplify the received optical fiber network signal and send the amplified optical fiber network signal to the PON control unit;

[0020] The PON control unit is used to monitor the network status of the optical fiber network. When the optical fiber network is normal, it controls the optical receiving subunit to receive the optical fiber network signal sent by the operator's optical line terminal according to a preset transmission rate, and sends the optical fiber network signal sent by the PON control unit to the application processor unit.

[0021] As a preferred solution, the small optical line terminal module is further used to forward the uplink signal of the user equipment received from the gateway to the application processor unit.

[0022] As a preferred solution, the application processor unit is further used to forward the uplink signal of the user equipment to the passive optical network module when the optical fiber network is normal, and forward the uplink signal of the user equipment to the modem unit when the optical fiber network is interrupted.

[0023] As a preferred solution, the BOSA unit further includes: a light emitting subunit;

[0024] The PON control unit is further configured to send the uplink signal of the user equipment to the optical drive unit when the optical fiber network is normal;

[0025] The optical driving unit is further configured to amplify the received uplink signal of the user equipment and send the amplified uplink signal of the user equipment to the optical transmitting subunit;

[0026] The optical transmission subunit is also used to perform photoelectric conversion on the uplink signal of the user device, converting the uplink signal of the user device from an electrical signal to an optical signal, and driving a preset laser to emit light according to the converted uplink signal of the user device, so that the laser transmits the converted uplink signal of the user device to the operator's optical line terminal through the optical fiber network.

[0027] As a preferred solution, the modulation and demodulation unit is also used to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, and transmit the uplink signal of the user equipment to the operator base station.

[0028] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0029] The present invention provides a network access system for hybrid access of optical fiber networks and 5G networks, comprising: a passive optical network module and a 5G cellular module; the 5G cellular module comprises a modulation and demodulation unit and an application processor unit; the passive optical network module is connected to the application processor unit; the passive optical network module is used to communicate with the operator's optical line terminal through the optical fiber network when the optical fiber network is normal, receive the optical fiber network signal sent by the operator's optical line terminal, and send the received optical fiber network signal to the application processor unit; the modulation and demodulation unit is used to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, receive the 5G network signal sent by the operator's base station, and send the received 5G network signal to the application processor unit; the application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modulation and demodulation unit to the corresponding user equipment.

[0030] The network access system of the present invention includes a passive optical network module and a 5G cellular module. The 5G cellular module includes a modem unit. When the optical fiber network is operating normally, optical fiber access can be achieved through the passive optical network module. When the external optical fiber network is interrupted, the present invention can also switch the current network communication mode from optical fiber network communication to 5G network communication through the modem unit, achieving seamless switching from optical fiber network communication to 5G cellular network communication. This overcomes the problem of users being unable to access the network due to external optical fiber network interruption and achieves the requirements of high reliability and continuous network interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a network access system for hybrid access of an optical fiber network and a 5G network provided by one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the module structure of the passive optical network module;

[0033] Figure 3 This is a schematic diagram of the module structure of the 5G cellular module;

[0034] Figure 4 This is a schematic diagram of the module structure of a small optical line terminal module;

[0035] Figure 5 It is a user service flow chart of the present invention;

[0036] Figure 6 It is a user service flow chart of the passive optical network module;

[0037] Figure 7 It is the user service flow diagram of the 5G cellular module;

[0038] Figure 8 This is a user service flow diagram of a small optical line terminal module. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0041] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0042] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0044] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0045] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0046] Example 1

[0047] Please refer to Figure 1, is a structural diagram of a network access system for hybrid access of an optical fiber network and a 5G network provided by an embodiment of the present invention, comprising: a passive optical network module and a 5G cellular module;

[0048] The 5G cellular module includes a modem unit and an application processor unit;

[0049] The passive optical network module is connected to the application processor unit;

[0050] The passive optical network module is used to communicate with the operator's optical line terminal through the optical network when the optical network is normal, receive the optical network signal sent by the operator's optical line terminal, and send the received optical network signal to the application processor unit;

[0051] The modem unit is configured to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, receive the 5G network signal sent by the operator base station, and send the received 5G network signal to the application processor unit;

[0052] The application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment.

[0053] Preferably, it also includes: a small optical line terminal module and a WiFi module; the small optical line terminal module and the WiFi module are both connected to the application processor unit; the application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment, including: the application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the small optical line terminal module and the WiFi module; the WiFi module is used to send the received optical fiber network signal or 5G network signal to the corresponding user equipment; the small optical line terminal module is used to send the received optical fiber network signal or 5G network signal to the corresponding slave gateway, so that the slave gateway forwards the optical fiber network signal or 5G network signal to the corresponding user equipment.

[0054] Preferably, the passive optical network module includes: a PON control unit, an optical driver unit and a BOSA unit; the BOSA unit includes: an optical receiving subunit; the optical receiving subunit is used to receive the optical fiber network signal sent by the operator's optical line terminal, perform photoelectric conversion on the optical fiber network signal, convert the optical fiber network signal from an optical signal to an electrical signal, and send the converted optical fiber network signal to the optical driver unit; the optical driver unit is used to amplify the received optical fiber network signal and send the amplified optical fiber network signal to the PON control unit; the PON control unit is used to monitor the network status of the optical fiber network, and when the optical fiber network is normal, control the optical receiving subunit to receive the optical fiber network signal sent by the operator's optical line terminal according to a preset transmission rate, and send the optical fiber network signal sent by the PON control unit to the application processor unit.

[0055] Preferably, the small optical line terminal module is further used to forward the uplink signal of the user equipment received from the gateway to the application processor unit.

[0056] Preferably, the application processor unit is further configured to forward the uplink signal of the user equipment to the passive optical network module when the optical fiber network is normal, and forward the uplink signal of the user equipment to the modem unit when the optical fiber network is interrupted.

[0057] Preferably, the BOSA unit further includes: an optical transmitting subunit; the PON control unit is further used to send the user equipment uplink signal to the optical driving unit when the optical fiber network is normal; the optical driving unit is further used to amplify the received user equipment uplink signal, and send the amplified user equipment uplink signal to the optical transmitting subunit; the optical transmitting subunit is further used to perform photoelectric conversion on the user equipment uplink signal, convert the user equipment uplink signal from an electrical signal to an optical signal, and drive a preset laser to emit light according to the converted user equipment uplink signal, so that the laser transmits the converted user equipment uplink signal to the operator's optical line terminal through the optical fiber network.

[0058] Preferably, the modulation and demodulation unit is also used to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, and transmit the uplink signal of the user equipment to the operator base station.

[0059] Specifically, in order to solve the problem in the prior art that once the external optical fiber network of the ONU is interrupted, users will be unable to access the network. The present invention uses optical fiber access and 5G cellular network backup as network access. After the optical fiber network is abnormal, it seamlessly switches to the 5G cellular network. After the optical fiber network is restored, it switches back to the optical fiber network, achieving high reliability and never-ending network interruption requirements.

[0060] In addition, the system's downlink port utilizes the FTTR (Fiber to the Room) principle to connect to the Mini-OLT unit (Mini optical line terminal), which is then connected to the ONU in each room / office through an optical splitter. This implements the wireless WiFi mesh networking requirements of each room / office from the gateway, allowing users to seamlessly switch between rooms / offices, providing them with a better network experience.

[0061] like Figure 1 As shown, the circuit principle of the device designed by the present invention is mainly divided into three parts: passive optical network module, 5G cellular module and small optical line terminal module; please refer to Figure 2 、 Figure 3 and Figure 4 , which are respectively the module structure diagrams of the passive optical network module, the module structure diagrams of the 5G cellular module, and the module structure diagrams of the small optical line terminal module.

[0062] The first part is the PON (Passive Optical Network, collectively known as GPON (2.5G rate), XGPON (10G asymmetric rate), and XGSPON (10G symmetric rate)) module, which mainly consists of a PON master chip, an optical driver chip, a BOSA (Bidirectional Optical Assembly), and an optical fiber interface to achieve user fiber access. The second part is the 5G cellular module, which mainly uses a 5G cellular module and a 5G antenna to achieve 5G network access. It is used to immediately switch to the 5G network after the optical fiber network is interrupted. The third part is the Mini-OLT module, which mainly consists of a Mini-OLT chip and a BOSA to achieve downlink access from the gateway ONU in each room / office.

[0063] The specific implementation is as follows: the PON part connects to the 5G cellular side AP processor through the HSGMII (High Serial Gigabit Medium Independent Interface) interface, and transmits the downlink data received by the PON to the 5G cellular side AP processor through this interface. The AP processor transmits it to the user through WiFi according to the destination IP address, or forwards it to the gateway through the miniOLT and then transmits it to the user.

[0064] Please refer to Figure 5 , is the user service flow chart of the present invention, Figure 6 、 Figure 7 and Figure 8 They are the user business process diagram of the passive optical network module, the user business process diagram of the 5G cellular module, and the user business process diagram of the small optical line terminal module.

[0065] 1. Passive optical network module:

[0066] The PON part can be specifically divided into: PON control unit, optical driver unit and BOSA unit (Bidirectional Optical Assembly, i.e. single-fiber bidirectional assembly).

[0067] The PON control unit's main functions include data transmission, network management and maintenance, and optical transmission rate support. It communicates with the upstream OLT via optical fiber. The PON control unit receives data transmitted from the OLT, verifies the data, and transmits it to different users. At the same time, the data sent by the user is packaged, a check bit is added, and then transmitted to the upstream OLT.

[0068] In addition, the PON control unit is also responsible for managing and maintaining the PON network. It monitors the network status through OAM&P (Operation, Administration, Maintenance and Provisioning) functions to ensure stable operation and efficient management of the network.

[0069] Specifically, PON can monitor the network status by detecting the quality of optical signals, such as through CRC (Cyclic redundancy check, commonly known as "CRC"). If the data received from the operator's OLT always contains a large number of bit errors, an alarm will be sent to the telecom operator, asking them to send personnel to check the fiber optic line.

[0070] If the system can register with the operator's OLT normally, the network delay is normal (generally the ping packet delay is within 100ms), the packet loss rate is normal (the packet loss rate is less than 0.001%), and the optical signal strength is within the normal range, the status is considered normal. Otherwise, it is considered an abnormal situation and the customer will be informed through the LED light or the network management server will be notified to the operator to send someone for maintenance.

[0071] In addition, the PON control unit is also responsible for negotiating different transmission rates with the OLT, such as 2.5G PON rate for GPON (Gigabit Passive Optical Network), 1G PON rate for EPON (Ethernet Passive Optical Network), and 10G PON rate for XG-PON (10Gigabit PON), to meet the bandwidth requirements of different user needs and application scenarios.

[0072] The optical drive unit is responsible for amplifying the signal sent by the PON control unit to better drive the BOSA to emit light. At the same time, it amplifies the signal received by the BOSA to enter the PON control unit.

[0073] The BOSA unit consists of an optical transmitter and an optical receiver. The optical transmitter converts the electrical signal from the optical driver unit into photoelectricity, drives the laser to emit light, and then transmits it to the optical fiber. The optical receiver is responsible for detecting and receiving the optical signal sent from the optical fiber, converting it into photoelectricity, and then converting it into an electrical signal. The signal enters the optical driver unit, is amplified, and then transmitted to the PON control unit after amplification.

[0074] 2. 5G cellular module:

[0075] The 5G cellular part inserts the operator's SIM card and accesses the Internet through the operator's base station to provide network for users.

[0076] For the 5G cellular module, it is specifically divided into the AP (Application Processor) side and the modem (modulation and demodulation unit). The modem side is responsible for receiving and decoding the 5G signal sent by the base station, and then converting the data into a data stream format that can be used by the user device. Generally speaking, the data stream received by the modem is wirelessly encrypted and has redundant check bits added, while the user's business data stream is plain text data sent byte by byte (8 bits per byte). At the same time, it also encodes and modulates the data sent by the user device, and then transmits it back to the operator's 5G network;

[0077] 5G cellular modulation and demodulation, the demodulation and reception process is as follows:

[0078] After the modem receives the signal from the base station via the antenna, it passes it through a filter to remove all other signals, retaining only the frequency corresponding to the intended reception. The received signal is then further amplified by a low-noise amplifier (LNA) before entering the demodulation circuit. The demodulation circuit further demodulates the amplified modulated signal, removing the carrier signal and retaining the original signal. The signal is then sampled by the ADC (Analog-to-Digital Converter), converting the analog signal into a digital signal. The digital signal then enters the decoder.

[0079] The decoder removes redundant coding, error correction, and digital encryption added during wireless transmission, leaving only the actual content being transmitted. The modulation and transmission process is the reverse of the demodulation process. The content to be transmitted passes through the encoder, which encrypts it and adds redundant coding and error correction to facilitate wireless transmission. The digital signal then enters the DAC (Digital-to-Analog Converter) to convert it into an analog signal. The signal then passes through the modulation circuit, which modulates the carrier wave and modulates it to a higher frequency for better wireless transmission. The modulated signal then enters the power amplifier for further amplification, allowing for longer transmission. The amplified signal then passes through a filter to remove spurious frequencies introduced by other circuits, preventing interference with other devices. The filtered signal is then transmitted through the antenna.

[0080] The AP side is responsible for processing and forwarding data streams, and connects to the Mini-OLT unit through the network interface. It also manages and restricts the access of downstream slave gateways through the OMCI (Optical Network Unit Management and Control Interface) protocol. That is, slave gateways in the whitelist can access the system, while slave gateways not in the whitelist are restricted from access.

[0081] 3. Small optical line terminal module:

[0082] The Mini-OLT's uplink interface connects to the 5G cellular AP processor via the HSGMII (High Serial Gigabit Medium Independent Interface). The Mini-OLT is divided into the OLT unit, the optical drive unit, and the BOSA.

[0083] Among them, the OLT unit communicates with the 5G cellular AP side through the OMCI (Optical Network Unit Management and Control Interface) protocol to manage downlink access from the gateway, including configuration management, fault management, performance management and security management.

[0084] Configuration management includes configuring the network parameters of the slave gateway, updating software, and starting / shutting down network services, that is, which slave gateways are allowed to access and how much bandwidth rate is allocated to the corresponding slave gateways. This is generally done by adding the SN and MAC address of the downstream slave gateway to the OLT whitelist and configuring the maximum allowed access rate.

[0085] Fault management includes link detection, such as checking for offline slave gateways and network anomalies. This is generally done through periodic heartbeat connections with the slave gateways to detect slave gateway anomalies and arrange on-site troubleshooting.

[0086] Performance management mainly detects the quality of optical signals and transmission rates to ensure the stability and quality of network services. It detects faults by detecting optical signal strength, statistically analyzing packet loss rates, retransmission times, etc.

[0087] Security management includes gateway authentication and data encryption communication to ensure the security of the gateway and network, which is generally achieved through data encryption and firewalls.

[0088] In a specific embodiment, user data can go through a fiber optic PON network or a 5G cellular network;

[0089] The PON service data transmission path when user data passes through the optical fiber PON network is:

[0090] Downlink data transmission path: cloud server - operator OLT - PON (part 1) - 5G peak AP processor - mini0LT (downlink port) - gateway - user;

[0091] Uplink data transmission path: user - slave gateway - mini0LT (downlink port) - 5G peak cell AP processor - PON (first part) - operator OLT - cloud server;

[0092] The 5G cellular service data transmission path when user data passes through the 5G cellular network is:

[0093] Downlink data transmission path: cloud server - 5G base station - cellular receive / transmit antenna (part 2) - 5G cellular AP processor - mini OLT (downlink port) - slave gateway - user;

[0094] Uplink data transmission path: user - slave gateway - mini0LT (downlink port) - 5G cellular AP processor - 5G receive / transmit antenna (part 2) - 5G base station - cloud server.

[0095] The design principle / working process of the present invention is as follows: Figure 3 and Figure 4 As shown, when the user inserts the optical fiber and registers with the OLT, the user's network data is transmitted through the optical fiber network by default. At the same time, the device is constantly detecting the quality of the optical fiber network and the network connectivity. At this time, the 5G cellular network is in the on-network state. If an abnormality is detected in the optical fiber network, it will immediately switch to the 5G cellular network to ensure that the user is never disconnected from the network. When the optical fiber network is restored, the device data service automatically returns to the optical fiber network. It is suitable for places with high network requirements, such as banks and financial institutions, corporate networks, shopping malls, etc.

[0096] Specifically, network quality is measured by ping packet latency. The device sends real-time ping packets to a network server, such as Baidu's server. The specific server is user-configurable. If the ping packet latency is extremely high, for example, greater than 1 second, the network quality is considered poor and abnormal. If the ping packet fails to connect and no response is received, the fiber optic network is considered abnormal.

[0097] When the fiber optic network switches abnormally to a 5G cellular network, the connection method in this system does not change, but the data path within the system will change. When the PON network data is blocked, the AP processor inside the device will switch the data path to the 5G cellular network, that is, the user's Internet data will be forwarded through the cellular base station to ensure that the user is connected to the network.

[0098] At the same time, the device is constantly sending ping packets to the PON side. If the ping packets are returned normally, it is considered that the PON network has recovered, and the AP processor will switch the data path to the PON side, that is, the user's Internet data will be forwarded through the PON.

[0099] In another specific embodiment, a slave gateway is connected to the system via optical fiber, and a wireless mesh network of all slave gateway WiFi can be realized, so that users can move around on various slave gateways and achieve seamless roaming and switching, providing users with stable wireless coverage. It is suitable for companies, shopping malls, hotels, hospitals and other places. The specific implementation process is as follows:

[0100] The WiFi wireless mesh system of the present invention uses a universal standard protocol, namely the 802.11k / v / r protocol. For example, when a user walks from gateway A to gateway B, and the user's mobile phone measures that the signal from gateway A is getting weaker and the signal from gateway B is getting stronger, the system reports the signal strength in real time to the system (i.e., the master gateway). The master gateway determines the current signal strength thresholds measured from gateways A and B. When the thresholds of the internal devices are met, a message is sent to the user's mobile phone, instructing it to switch to the network of router B. This switch is completed within 1 second and has no impact on the user's network experience. It's like walking on a highway with a mobile phone: the phone will switch from base station A to base station B, ensuring that the user's network is connected and calls are not dropped.

[0101] The present invention is designed for practical application in enterprises. The device can connect up to 128 slave gateway devices, basically covering the network coverage of all small and medium-sized enterprises and shopping malls, and achieving a highly reliable, low-cost, and seamless roaming network experience.

[0102] It can be seen that the present invention provides a network access system with hybrid access of optical fiber network and 5G network. On the one hand, it solves the problem of user network reliability and realizes that the network is never interrupted; on the other hand, it can provide users with indoor ultra-large-scale wireless network coverage, seamless roaming and uninterrupted network, and a prompt network experience.

[0103] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A network access system for hybrid access of optical fiber network and 5G network, characterized in that: include: Passive optical network modules and 5G cellular modules; The 5G cellular module includes a modem unit and an application processor unit; The passive optical network module is connected to the application processor unit; The passive optical network module is used to communicate with the operator's optical line terminal through the optical network when the optical network is normal, receive the optical network signal sent by the operator's optical line terminal, and send the received optical network signal to the application processor unit; The modem unit is configured to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, receive the 5G network signal sent by the operator base station, and send the received 5G network signal to the application processor unit; The application processor unit is used to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment.

2. The network access system for hybrid access of optical fiber network and 5G network according to claim 1, characterized in that: Also included: small optical line terminal module and WiFi module; The small optical line terminal module and the WiFi module are both connected to the application processor unit; The application processor unit is configured to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the corresponding user equipment, including: The application processor unit is configured to forward the optical fiber network signal sent by the passive optical network module or the 5G network signal sent by the modem unit to the small optical line terminal module and the WiFi module; The WiFi module is used to send the received optical fiber network signal or 5G network signal to the corresponding user equipment; The small optical line terminal module is used to send the received optical fiber network signal or 5G network signal to the corresponding slave gateway, so that the slave gateway forwards the optical fiber network signal or 5G network signal to the corresponding user equipment.

3. The network access system for hybrid access of optical fiber network and 5G network according to claim 2, characterized in that: The passive optical network module includes: a PON control unit, an optical driver unit and a BOSA unit; The BOSA unit includes: a light receiving subunit; The optical receiving subunit is used to receive the optical fiber network signal sent by the operator's optical line terminal, perform photoelectric conversion on the optical fiber network signal, convert the optical fiber network signal from an optical signal to an electrical signal, and send the converted optical fiber network signal to the optical driving unit; The optical driving unit is configured to amplify the received optical fiber network signal and send the amplified optical fiber network signal to the PON control unit; The PON control unit is used to monitor the network status of the optical fiber network. When the optical fiber network is normal, it controls the optical receiving subunit to receive the optical fiber network signal sent by the operator's optical line terminal according to a preset transmission rate, and sends the optical fiber network signal sent by the PON control unit to the application processor unit.

4. The network access system for hybrid access of optical fiber network and 5G network according to claim 3, characterized in that: The small optical line terminal module is further used to forward the uplink signal of the user equipment received from the gateway to the application processor unit.

5. The network access system for hybrid access of optical fiber network and 5G network according to claim 4, characterized in that: The application processor unit is further configured to forward the uplink signal of the user equipment to the passive optical network module when the optical fiber network is normal, and forward the uplink signal of the user equipment to the modulation and demodulation unit when the optical fiber network is interrupted.

6. The network access system for hybrid access of optical fiber network and 5G network according to claim 5, characterized in that: The BOSA unit further includes: a light emitting subunit; The PON control unit is further configured to send the uplink signal of the user equipment to the optical drive unit when the optical fiber network is normal; The optical driving unit is further configured to amplify the received uplink signal of the user equipment and send the amplified uplink signal of the user equipment to the optical transmitting subunit; The optical transmission subunit is also used to perform photoelectric conversion on the uplink signal of the user device, converting the uplink signal of the user device from an electrical signal to an optical signal, and driving a preset laser to emit light according to the converted uplink signal of the user device, so that the laser transmits the converted uplink signal of the user device to the operator's optical line terminal through the optical fiber network.

7. The network access system for hybrid access of optical fiber network and 5G network according to claim 6, characterized in that: The modulation and demodulation unit is also used to switch the current network communication mode from optical fiber network communication to 5G network communication when the optical fiber network is interrupted, and transmit the uplink signal of the user equipment to the operator base station.

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