CN110557735A

CN110557735A - communication system based on regional broadband wireless network

Info

Publication number: CN110557735A
Application number: CN201810536698.7A
Authority: CN
Inventors: 陶林; 孙琳琳; 田越; 牛福来; 陈菲; 王丹宁; 辛树奇; 李硕; 苏成鑫; 胡士杰
Original assignee: Orville Over Communication Co Ltd
Current assignee: Orville Over Communication Co Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-10
Anticipated expiration: 2038-05-30
Also published as: CN110557735B

Abstract

the invention relates to a communication system based on a regional broadband wireless network, which comprises a piggyback communication system, a vehicle-mounted communication system, a multi-user communication system and a central station communication system, wherein the piggyback communication system, the vehicle-mounted communication system and the multi-user communication system are respectively in wireless connection with the central station communication system, send audio and video signals to the central station communication system, receive the audio and video signals sent by the central station communication system, and access to each other through the central station communication system. The portable emergency communication terminal has portability, can deploy equipment according to field conditions in field deployment emergency communication, is convenient to install and carry, can bear and carry on a vehicle, and can easily configure each acquisition point and control point to flexibly meet the requirements; the wireless communication system has the advantages that the maintenance is convenient, when the wireless communication fails, the problems can be solved and repaired as long as the signal source and the receiving equipment are overhauled, the equipment maintenance is convenient, the fault diagnosis is simple, and the authorized network access and the encrypted registration can be safer.

Description

communication system based on regional broadband wireless network

Technical Field

The invention relates to the field of wireless communication, in particular to a communication system based on a regional broadband wireless network.

background

With the rapid growth of wireless communications and the tremendous advancement in technology, the world has moved to a fully interconnected network society. I.e. anyone or anything can get information and share data at any time and anywhere. Due to the rapid development of wireless network technology, regional broadband wireless access communication systems are widely applied in various fields. The number of devices of the regional broadband wireless access communication system is greatly increased. In particular, the perfection of wireless communication systems gradually increases various wireless instruments and control equipment.

However, when a large number of such wireless instruments and devices are used, the newly added wireless devices will interfere with the existing devices or interfere with the newly added devices in an unknown state, which is easy to cause co-frequency interference and adjacent-frequency interference, the field device wireless network only supports communication with the accessed devices and cannot communicate with other devices, so that the field device wireless network can only communicate with the accessed devices of the wireless network, the coverage area of the wireless devices is too small, signal coverage is difficult to achieve among the devices, the coverage area of the devices in a single networking mode is limited, and due to the fact that the application environment of the wireless technology is complicated and varied, such as factories, mines, schools, troops, cities, mountainous areas and the like, various obstacles such as trees, automobiles, humans and the like may exist to block, and under the condition that no signal exists in a special environment, the network between other network devices and the devices in the wireless network is abnormal and unable to communicate, it becomes extremely important that network communication be smooth.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a communication system based on a regional broadband wireless network.

the technical scheme adopted by the invention for realizing the purpose is as follows:

a communication system based on regional broadband wireless network comprises a piggyback communication system, a vehicle-mounted communication system, a multi-user communication system and a central station communication system, wherein the piggyback communication system, the vehicle-mounted communication system, the multi-user communication system and the central station communication system are connected with each other through a network

The piggyback communication system is in wireless connection with the central station communication system, sends audio and video signals to the central station communication system, receives the audio and video signals sent by the central station communication system, and accesses the vehicle-mounted communication system and the multi-user communication system through the central station communication system;

The vehicle-mounted communication system is in wireless connection with the central station communication system, sends audio and video signals to the central station communication system, receives the audio and video signals sent by the central station communication system, and accesses the piggyback communication system and the multi-user communication system through the central station communication system;

The multi-user communication system is in wireless connection with the central station communication system, sends audio and video signals to the central station communication system, receives the audio and video signals sent by the central station communication system, and accesses the piggyback communication system and the vehicle-mounted communication system through the central station communication system.

Bear communication system includes tall and erect mainboard of ann, ad hoc network baseband board, LTE baseband board, POE switch, code card and power management unit, wherein

The ad hoc network baseband board is connected with the ad hoc network antenna through the ad hoc network power amplifier and the radio frequency filter in sequence, the ad hoc network antenna receives the wireless signal and then filters the wireless signal through the radio frequency filter, and the filtered wireless signal is subjected to power amplification through the ad hoc network power amplifier and then is sent to the ad hoc network baseband board; the ad hoc network baseband board is connected with a POE (Power over Ethernet) switch, the POE switch is connected with the android main board, and a wireless signal sent by the ad hoc network baseband board is sent to the android main board through the POE switch to be controlled; after processing the received wireless signal, the android main board sends a control signal to the ad hoc network baseband board through the POE switch, and the control signal is transmitted through the ad hoc network power amplifier and the radio frequency filter and then through the ad hoc network antenna;

The LTE baseband board is connected with an LTE antenna through an LTE power amplifier and a radio frequency filter in sequence, the LTE antenna receives an LTE signal and then carries out filtering through the radio frequency filter, and the filtered LTE signal is transmitted to the LTE baseband board after being subjected to power amplification through the LTE power amplifier; the LTE baseband board is connected with the POE switch, the POE switch is connected with the android main board, and an LTE signal sent by the LTE baseband board is sent to the android main board through the POE switch to be controlled; after processing the received wireless signals, the android main board sends control signals to the LTE baseband board through the POE switch, and the control signals are transmitted through the LTE antenna after passing through the LTE power amplifier and the radio frequency filter;

the android main board is connected with a Beidou positioning antenna through a Beidou communication unit, the Beidou positioning antenna receives a positioning signal and sends the positioning signal to the Beidou communication unit, and the positioning signal is sent to the android main board through the Beidou communication unit;

The POE switch is connected with the HDMI through the coding card, receives the HDMI signal sent by the main board and outputs the HDMI signal through the HDMI; the HDMI interface receives the signal and sends the signal to the POE switch through the encoding card, and the signal is sent to the mainboard through the POE switch;

The group battery is connected to power management unit's input, and the POE switch is connected to the other end, provides constant voltage power supply for tall and erect mainboard of ann, from network deployment baseband board, LTE baseband board, POE switch, big dipper communication unit and coding card.

the vehicle-mounted communication system comprises a mainboard, an ad hoc network baseband board, an LTE baseband board, a POE switch and a power management unit, wherein the power management unit is connected with the mainboard through the POE switch

the ad hoc network baseband board is connected with the ad hoc network antenna through the ad hoc network power amplifier and the radio frequency filter in sequence, the ad hoc network antenna receives the wireless signal and then filters the wireless signal through the radio frequency filter, and the filtered wireless signal is subjected to power amplification through the ad hoc network power amplifier and then is sent to the ad hoc network baseband board; the self-networking baseband board is connected with the POE switch, the POE switch is connected with the main board, and a wireless signal sent by the self-networking baseband board is sent to the main board through the POE switch to be controlled; after processing the received wireless signal, the main board sends a control signal to an ad hoc network baseband board through a POE switch, and the control signal is transmitted through an ad hoc network power amplifier and a radio frequency filter and then is transmitted through an ad hoc network antenna;

The LTE baseband board is connected with an LTE antenna through an LTE power amplifier and a radio frequency filter in sequence, the LTE antenna receives an LTE signal and then carries out filtering through the radio frequency filter, and the filtered LTE signal is transmitted to the LTE baseband board after being subjected to power amplification through the LTE power amplifier; the LTE baseband board is connected with the POE switch, the POE switch is connected with the main board, and an LTE signal sent by the LTE baseband board is sent to the main board through the POE switch to be controlled; after processing the received wireless signal, the main board sends a control signal to the LTE baseband board through the POE switch, and the control signal is transmitted through the LTE antenna after passing through the LTE power amplifier and the radio frequency filter;

the main board is connected with a Beidou positioning antenna through a Beidou communication unit, and the Beidou positioning antenna receives a positioning signal and sends the positioning signal to the Beidou communication unit and sends the positioning signal to the main board through the Beidou communication unit;

The input of power management unit connects power steady voltage conversion module, and the POE switch is connected to the other end, provides constant voltage power supply for each subassembly in the system.

The multi-user communication system comprises an ad hoc network baseband board, an LTE baseband board and a POE switch, wherein

The ad hoc network baseband board is connected with the ad hoc network antenna through the ad hoc network power amplifier and the radio frequency filter in sequence, the ad hoc network antenna receives the wireless signal and then filters the wireless signal through the radio frequency filter, and the filtered wireless signal is subjected to power amplification through the ad hoc network power amplifier and then is sent to the ad hoc network baseband board; the ad hoc network baseband board is connected with a POE switch, and a wireless signal sent by the ad hoc network baseband board is sent to equipment connected with a network port through the POE switch for control;

the LTE baseband board is connected with an LTE antenna through an LTE power amplifier and a radio frequency filter in sequence, the LTE antenna receives an LTE signal and then carries out filtering through the radio frequency filter, and the filtered LTE signal is transmitted to the LTE baseband board after being subjected to power amplification through the LTE power amplifier; the LTE baseband board is connected with a POE switch, and an LTE signal sent by the LTE baseband board is sent to equipment connected with the internet access through the POE switch to be controlled;

The POE switch accesses the network through a plurality of network interfaces.

The central station communication system comprises an EPC server, a CMT server, an ad hoc network baseband board, an LTE baseband board and a power supply voltage reduction module, wherein

The ad hoc network baseband board is connected with the ad hoc network antenna through the ad hoc network power amplifier and the radio frequency filter in sequence, the ad hoc network antenna receives the wireless signal and then filters the wireless signal through the radio frequency filter, and the filtered wireless signal is subjected to power amplification through the ad hoc network power amplifier and then is sent to the ad hoc network baseband board; the ad hoc network baseband board is connected with the EPC server through the POE switch and sends a data signal to the EPC server; after processing the received data signal, the EPC server sends a control signal to an ad hoc network baseband board through a POE switch, and the control signal is transmitted through an ad hoc network power amplifier and a radio frequency filter and then through an ad hoc network antenna; the ad hoc network baseband board is connected with the CMT server through the POE switch and sends data information to the CMT server; after processing the received data information, the CMT server sends permission and authorization information to an ad hoc network baseband board through a POE (Power over Ethernet) switch, and the permission and authorization information is transmitted through an ad hoc network antenna after passing through an ad hoc network power amplifier and a radio frequency filter;

The LTE baseband board is connected with an LTE antenna through an LTE power amplifier and a radio frequency filter in sequence, the LTE antenna receives an LTE signal and then carries out filtering through the radio frequency filter, and the filtered LTE signal is transmitted to the LTE baseband board after being subjected to power amplification through the LTE power amplifier; the LTE baseband board is connected with the POE switch, is connected with the EPC server through the POE switch, and sends a data signal to the EPC server; the EPC server processes the received data signal, sends a control signal to a POE switch, sends the control signal to an LTE baseband board through the POE switch, and sends the control signal to the LTE baseband board through an Ad hoc network power amplifier and a radio frequency filter and then through an LTE antenna; the LTE baseband board is connected with the CMT server through the POE switch and sends data information to the CMT server; after processing the received data information, the CMT server sends permission and authorization information to an LTE baseband board through a POE (Power over Ethernet) switch, and the permission and authorization information is transmitted through an LTE antenna after passing through an LTE power amplifier and a radio frequency filter;

and the power supply voltage reduction module is connected with the EPC server, the CMT server, the ad hoc network baseband board, the LTE power amplifier and the ad hoc network power amplifier and provides power supply voltage for the EPC server, the CMT server, the ad hoc network baseband board, the LTE power amplifier and the ad hoc network power amplifier.

the ad hoc network baseband board is a ZSJQ-CPE-ZW type ad hoc network baseband board and comprises a GE interface, an S1 interface, an external interface, an IPMI interface and a UART interface.

GE interface: the interface between the CC terminal and the BPL terminal transmits signaling flow and media flow;

An S1 interface; the S1 interface is a communication interface between the LTE base station and the EPC;

external interface: external access is supported;

IPMI interface: an internal peripheral management interface defined by the uTCA standard;

And a UART interface, wherein a CC terminal, an SA terminal and a PM terminal are adopted to provide a system clock and a radio frequency reference clock.

The LTE baseband board is a ZX-CPE-MB type LTE baseband board and comprises a GE interface, an S1 interface, an X2 interface, an external interface and an IPMI interface;

interface S1: the S1 interface is a communication interface between the LTE base station and the EPC;

X2 interface: supporting the interaction of signaling information between two LTE base stations;

External interface: external access is supported;

The distance from the LTE power amplifier to a feeder line of an LTE antenna is shortest; and the feeder distance from the ad hoc network power amplifier to the ad hoc network antenna is shortest.

the EPC server is an HBGK3501 model mainboard, adopts an IMX6Q/DL/S processor, and is used for receiving node signaling between NAS signaling and CN, and is responsible for signaling safety, legal monitoring of the signaling and UE accessibility management in an ECM idle state.

The CMT server is an HBGK3501 type mainboard, and an IMX6Q/DL/S processor is adopted to be responsible for information storage and control, special bearing establishment, network equipment access authentication and authorization.

The network interface is an interface circuit with an automatic power consumption mode, a port protection device is arranged on a port, and the maximum transmitting power is 4W.

The battery pack comprises a main battery and a backup battery, the main battery is connected with the power management unit and supplies power to the power management unit, when the main battery is replaced, the power management unit switches the power supply into the backup battery, the backup battery supplies power uninterruptedly, and when the main battery is replaced, the backup battery is switched into the main battery to supply power.

The invention has the following beneficial effects and advantages:

1. the invention can be used for the communication of regional broadband wireless access communication, and can monitor protocol data, equipment information, network broadcast, health messages and the like in a channel;

2. The invention shields some modules with electromagnetism independently, such as a power amplifier module and a power supply voltage stabilization conversion module which are separately arranged in different cavities, and copper paper is pasted inside the modules for shielding, thereby reducing the electromagnetic interference among the modules;

3. The invention makes the distance from the ad hoc network power amplifier and the LTE power amplifier to the feeder line of the aerial plug antenna shortest, and makes the bending of the feeder line minimum, thereby reducing the loss of signals in the transmission process and ensuring the signal intensity of the radio frequency antenna.

4. the backpack communication system of the invention adopts a 12V direct current power supply control board which is a pulse width modulation integrated circuit, and the design is an automatic power consumption mode and is in a long receiving state by default, thereby greatly prolonging the service life and being suitable for a high temperature use range.

5. the backpack communication system adopts a structure of the main battery and the standby battery, and the standby battery is started in the switching process of the main battery, so that the system can continuously keep a power supply state.

6. The backpack communication system separates a high-definition transmission structure from an android mainboard, mainly aims to reduce heat dissipation of a mainboard operation pressure gauge, transmits signals received by an LTE baseband board or an ad hoc network baseband board to the android mainboard through a network, the android mainboard can output the signals to an encoding card through the network, and conversely, when the signals are input to the encoding card through the HDMI signals, the encoding card transmits the signals to the android mainboard through network signals, and the signals are transmitted to other equipment through the LTE baseband board and the ad hoc network baseband board.

7. The multi-user communication system of the invention reserves a plurality of network ports, the design is more convenient to access a plurality of devices into the regional broadband wireless network communication system, and simultaneously, the plurality of devices can be accessed into the network through the multi-user device at the back end and communicate with other devices in the network.

8. The central station communication system is suitable for a loading mobile platform, is a mobile node of a broadband wireless access system, provides access for broadband mobile users, has broadband service exchange, service and network management functions, provides confidential services such as voice, data, video and the like, deploys an emergency communication base station in the field, realizes LTE wireless broadband coverage, realizes services such as video return, voice communication and the like through equipment such as a broadband mobile user carrying communication system, a communication command vehicle-mounted communication system, a handheld terminal and the like, adopts a three-prevention design as a whole, is embedded with various devices and equipment, and realizes rapid deployment functions of transportation, deployment and sorting recovery; under the quasi-flat terrain, 20MHz carrier bandwidth is adopted, a vehicle-mounted central station is communicated with a regional broadband access system user terminal, an antenna frame of the vehicle-mounted central station is 15 meters high, a vehicle-mounted communication system of a user and a portable access device of a multi-user communication system are 3.5 meters high, the system communication coverage is realized, the user can normally use the backpack communication system and the user handheld station, and the system communication coverage performance is realized.

9. The portable emergency communication terminal has portability, can deploy equipment according to field conditions in field deployment emergency communication, is convenient to install and carry, can bear and carry on a vehicle, and can easily configure each acquisition point and control point to flexibly meet the requirements; independence means that each device can be used independently without affecting each other; the commonality is that each device can be combined into a large wireless network system for use; the system is convenient to expand, the expansion of the system can be realized only by connecting newly-added equipment to a wireless network, and once a wireless signal is established, a plurality of pieces of equipment can be accessed at the same time; the wireless communication system has the advantages that the maintenance is convenient, when the wireless communication fails, the problems can be solved and repaired as long as the signal source and the receiving equipment are overhauled, the equipment maintenance is convenient, the fault diagnosis is simple, and the authorized network access and the encrypted registration can be safer.

drawings

FIG. 1 is a system block diagram of the present invention;

FIG. 2 is a block diagram of the piggyback communication system of the present invention;

FIG. 3 is a pin diagram of the chip TL3843P of the piggyback communication system PWM integrated circuit of the present invention;

FIG. 4 is a block diagram of the on-board communication system of the present invention;

Fig. 5 is a main board wiring diagram of the in-vehicle communication system;

FIG. 6 is a power wiring diagram of the in-vehicle communication system

FIG. 7 is a block diagram of a central station communication system of the present invention;

Fig. 8 is a block diagram of a multi-user communication system of the present invention.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings and examples.

fig. 1 shows a system configuration of the present invention.

The communication system based on the regional broadband wireless network comprises a piggyback communication system, a vehicle-mounted communication system, a multi-user communication system and a central station communication system, wherein the piggyback communication system, the vehicle-mounted communication system, the multi-user communication system and the central station communication system

the central station equipment integrates functions of a wireless base station, a core network, scheduling services and the like, and is responsible for functions of wireless system coverage, user authentication, command scheduling and the like. Through the EPC server of the central station, all the devices can be mutually accessed and can perform functions of voice calling, talkback, video and the like after being connected to the central station.

the backpack communication system can realize the functions of voice, video return, talkback, positioning and the like, can return the on-site audio and video information to the command center and the command car, and realizes service display on a dispatching desk of the command center (the command car); the functions of voice calling, talkback, video and the like can be realized among the backpack, the multiple users and the vehicle-mounted equipment.

The vehicle-mounted communication system can realize a long-distance wireless communication function, can realize functions of voice, video return, talkback, positioning and the like, the vehicle-mounted station equipment can return field audio and video information to a command center and a command vehicle, service display is realized on a dispatching desk of the command center (the command vehicle), and the dispatching desk equipment can carry out cloud deck control on a front-end cloud deck camera; the functions of voice calling, talkback, video and the like can be realized among the backpack, the multiple users and the central station equipment.

The multi-user communication system access equipment is used as switching equipment for accessing the Ethernet equipment to the wireless network, and IP equipment such as a notebook, a tablet, third-party equipment and the like can realize a wireless transmission function through the multi-user access equipment.

Fig. 2 is a block diagram of the piggyback communication system of the present invention.

According to the backpack communication system based on the regional broadband wireless network, each internal component is connected through a network interface, the ad hoc network antenna and the LTE antenna are connected to the ad hoc network and the LTE board through a radio frequency filter, then a signal is sent to the installation mainboard through a network POE switch for control, and positioning information is sent to the mainboard through the antenna interface through the positioning antenna. The broadband wireless system supports various wireless frequencies, can flexibly configure various bandwidths from 5MHz to 20MHz, and supports same-frequency networking; the LTE baseband board and the ad hoc network baseband board are sequentially connected with a radio frequency filter, and the other end of the radio frequency filter is connected with an antenna interface; the android main board is connected with the LTE baseband board and the ad hoc network baseband board through the POE switch, and data are transmitted through a network. The android main board can give the encoding card HDMI output through the network, on the contrary, when the signal passes through the HDMI signal input to the encoding card, the encoding card gives the android main board through the network signal, and transmits to other equipment through the LTE baseband board and the ad hoc network baseband board. The invention provides access service for broadband mobile users, the piggyback station provides field use, can be used in a piggyback mode, can also be used in a vehicle, can be accessed to a fixed base station and a vehicle-mounted central station (central station access mode), and provides services of secret voice, data, video and the like. And providing a bandwidth wireless channel for the in-vehicle communication equipment. The equipment can realize the wireless broadband access function in the coverage area of the broadband mobile fixed base station and the broadband mobile vehicle-mounted central station, and can realize the ad hoc network communication with the broadband mobile vehicle-mounted station and other broadband mobile backpack stations under the condition of offline. An emergency communication base station is deployed in the field, coverage of an LTE wireless broadband and an ad hoc network system is achieved, and services such as video return, voice communication and the like are achieved through a broadband mobile user carrying platform and a communication command vehicle. The broadband wireless system supports various wireless frequencies, can flexibly configure various bandwidths from 5MHz to 20MHz, and supports same-frequency networking; the frequency of 600MHz (566 + 678MHz) is adopted in the project. The system has the functions of broadband service exchange and network management, and provides confidential voice, data and video services; the communication of regional broadband wireless access communication can be monitored, and protocol data, equipment information and network broadcasting in a channel can be monitored.

The code card type: TI DM 368; the video and audio are converted into network signals through a coding card or transmitted through HDMI high-definition signals. The coding card is used for importing external audio and video data signals, converting the external audio and video data signals into recognizable digital signals and storing the recognizable digital signals for the work of editing and processing, converting the audio and video between analog signals and digital signals and checking various audio and video format signals.

the network interface and the android main board are interface circuits with automatic power consumption modes, and port protection devices are arranged on ports. The android motherboard is an ANZK3301 model motherboard and adopts a 64-bit RK3301 processor. The intelligent handle is connected with an IDC2 chip 5 on the mainboard through a handle serial port, and a control command is input to the android mainboard for control.

after the system is powered on, a toggle mode selection switch is adopted, the function locking is realized, the misoperation is prevented, the configuration parameters are read from the android main board, the channel of the radio frequency transceiver is initialized, and all data on the channel are monitored; when the radio frequency transceiver receives the spatial radio frequency data, the received data is forwarded to the MCU serial port, and then the radio frequency receiving and the MCU serial port receiving are continuously monitored; when the LTE antenna or the ad hoc network antenna receives data, whether the data is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified and stored in an android mainboard; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through an android mainboard; and then continues to listen for receipt of data information. The system equipment can be used by people in a piggyback mode and can also be installed on various moving vehicles, such as factories, mines, schools, armies, blocks, mountainous areas and the like, and the piggyback equipment can be wirelessly accessed to a network formed by fixed base stations. And carrying out voice call with other terminals or dispatching stations. The handle is used for dialing and calling to carry out talkback operation. The video image of the vehicle-mounted network cloud platform camera can be accessed as required and is transmitted back to the dispatching desk, and a user can remotely control the operation of the cloud platform at the dispatching desk. The system position movement information can be displayed on the dispatching desk. The structural design principle is convenient to fix, the safety of people in the vehicle is guaranteed during the running of the vehicle, a case fixing mode is adopted, and other devices are convenient to carry. A temperature and humidity sensor can be externally arranged as required to be connected with the android main board.

the LTE baseband board ZX-CPE-MB comprises a GE interface, an S1\ X2 interface; GE: the interface between the CC and the BPL transmits a signaling stream and a media stream; an S1/X2 interface; an external interface; IPMI: an internal peripheral management interface defined by the uTCA standard; the UART is adopted between CC and SA, PM; and a system clock and a radio frequency reference clock are provided, the RRC \ PDCP \ RLC \ MAC \ PHY layer protocol is realized, and the wireless access control and the mobility management are completed.

Ad hoc network base band plate ZSJQ-CPE-ZW contains GE: the interface between the CC and the BPL transmits a signaling stream and a media stream; an S1/X2 interface; an external interface; IPMI: an internal peripheral management interface defined by the uTCA standard; and UART, namely a system clock and a radio frequency reference clock are provided between CC, SA and PM, so that RRC \ PDCP \ RLC \ MAC \ PHY layer protocols are realized, and wireless access control and mobility management are completed.

The android mainboard adopts a 64-bit RK3301 processor for an ANZK3301 product, adopts POWERRG6110GPU to support TE and ASTC/ASBC memory compression technology, and has high product integration level, low power consumption and rich interfaces. The mainboard supports multiple display interfaces of HDMI, 1 kilomega network port, 3 COM ports, 2x SATAII, 2 USB2.0 and 1 HDMI interface, supports WiFi and 4G modules, is provided with an onboard SIM card socket and can support a 4G network, and comprises COM2 on the mainboard, and an IDC 2x 5 chip is connected with a front panel handle serial port; the COM3 and the IDC2 and 5 chips on the mainboard are connected with the positioning module; an AUDI0 chip on the mainboard is connected with a front panel AUDIO in a PIN connection mode; the USB34 chip on the mainboard is connected with the front panel USB interface in a PIN connection PIN mode; the JGP10 chip on the mainboard is connected with a front panel P4, a GPI0 and a power supply JPIO interface; JYDS on the mainboard, the LVDS chip connects front panel P4 interface, Ad hoc network AP and LTE AP play the effect of power amplifier, mainly carry out signal amplification's function and effect, can send the signal that receiving and dispatching sent to greatly, the filtering interference makes signal transmission reliable and stable, in order to ensure radio frequency antenna's signal strength, when carrying out the casing design, under the circumstances that the casing size allows, accomplish the shortest to Ad hoc network power amplifier, the feeder distance of LTE power amplifier to the aerial plug-in antenna, the bending of feeder is also accomplished fewest, in order to reduce the loss of signal in transmission process.

The main battery and the standby battery are connected with the power supply management unit, the main battery supplies power to the power supply management unit, when the main battery is replaced, the power supply management unit switches the power supply into the standby battery, the standby battery supplies power uninterruptedly, and when the main battery is replaced, the main battery is switched into the main battery to supply power. DC12V inserts the main battery interface that the power strip was inserted to the navigation, main battery switch connects the fuse box, then give android package mainboard through the mainboard interface with 12V power supply, the POE switch, from network deployment board, from network deployment power amplifier, the front panel, equipment such as LTE board and LTE power amplifier, through fuse box and power switching control protection circuit, avoid the high voltage surge of maloperation or introduction to restrain, this design is automatic power consumption mode and acquiescence and is in long receiving state, actual measurement static power consumption is 20uA under this state, the transmitting current is 3mA, can prolong service life greatly, be applicable to high temperature application range.

The ad hoc network power amplifier, the LTE power amplifier and the power supply voltage-stabilizing conversion module are respectively and independently shielded.

The power supply control board DYLB24 outputs 12V direct current, and the control core device is a pulse width modulation integrated circuit TL3843P (which contains an oscillator, a pulse width modulation comparator and a logic controller, has protection and control functions of overcurrent, undervoltage and the like, the highest working frequency can reach 500MHz, and the starting current only needs ImA). The pin functions are shown in fig. 3: (1) the pin is the output of the internal error amplifier and there is typically a feedback network between pin (2) and the pin to determine the gain of the error amplifier. (2) The pin is a feedback voltage input end which is used as an inverting input end of the internal error amplifier, and the feedback voltage input end is compared with a reference voltage (+2.5V) of a non-inverting input end to generate an error control voltage and control the pulse width. (6) And a pin overcurrent detection input end which forbids the output of the driving pulse when the voltage of the connected person is higher than 1V. (4) The pin is a common connection end of an RT/RC timing resistor and a capacitor and is used for generating sawtooth oscillation waves. (5) The pin is a grounding end. (6) The pin is a pulse output end with adjustable pulse width. (7) The pin is a working voltage input end (10V Vi is less than or equal to 30V). (8) The pin is the internal reference voltage (VREF ═ 5v) output terminal.

Fig. 4 is a block diagram showing the in-vehicle communication system of the present invention.

On-vehicle communication system based on regional broadband wireless network, inside each part passes through network interface connection, and ad hoc network antenna and LTE antenna pass through radio frequency filter and are connected to ad hoc network baseband board and LTE baseband board, then give the mainboard control with the signal through network POE switch, give the mainboard through the antenna interface with locating information through the location antenna. The broadband wireless system supports various wireless frequencies, can flexibly configure various bandwidths from 5MHz to 20MHz, and supports same-frequency networking; the LTE and the ad hoc network are sequentially connected with a radio frequency filter, and the other end of the radio frequency filter is connected with an antenna interface; the mainboard passes through the switch and connects LTE board and ad hoc network board, and data transmit through the network. The frequency of 600MHz (566 + 678MHz) is adopted in the project. The invention can be used for providing access service for broadband mobile users, has the functions of broadband service exchange, service and network management, and provides services such as confidential voice, data, video and the like.

the network interface and the mainboard are interface circuits with automatic power consumption modes, and port protection devices are arranged on ports. The ad hoc network power amplifier, the LTE power amplifier and the power supply voltage-stabilizing conversion module are respectively and independently shielded.

After the system is powered on, a toggle mode selection switch is adopted, the function locking is realized, the misoperation is prevented, the configuration parameters are read from the mainboard, the channel of the radio frequency transceiver is initialized, and all data on the channel are monitored; when the radio frequency transceiver receives the spatial radio frequency data, the received data is forwarded to the MCU serial port, and then the radio frequency receiving and the MCU serial port receiving are continuously monitored; when the LTE antenna or the ad hoc network antenna receives data, whether the data is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified and stored in a mainboard; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through the mainboard; and then continues to listen for receipt of data information. The system is installed on various moving military vehicles and can be wirelessly accessed to a network consisting of fixed base stations. And carrying out voice call with other terminals or dispatching stations. The handle is used for dialing and calling to carry out talkback operation. The video image of the vehicle-mounted network cloud platform camera can be accessed as required and is transmitted back to the dispatching desk, and a user can remotely control the operation of the cloud platform at the dispatching desk. The system position movement information can be displayed on the dispatching desk. The structural design principle is convenient to fix, the safety of people in the vehicle is guaranteed during the running of the vehicle, a case fixing mode is adopted, and other devices are convenient to carry. A temperature and humidity sensor can be externally arranged as required to be connected with the mainboard.

The LTE plate ZX-CPE-MB comprises a GE interface, an S1\ X2 interface; GE: the interface between the CC and the BPL transmits a signaling stream and a media stream; an S1/X2 interface; an external interface; IPMI: an internal peripheral management interface defined by the uTCA standard; the UART is adopted between CC and SA, PM; and a system clock and a radio frequency reference clock are provided, the RRC \ PDCP \ RLC \ MAC \ PHY layer protocol is realized, and the wireless access control and the mobility management are completed.

when the LTE antenna or the ad hoc network antenna receives data, whether the data is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified and stored in a mainboard; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through the mainboard; then continuing to monitor the receiving of the data information; the ad hoc network board ZSJQ-CPE-ZW comprises GE: the interface between the CC and the BPL transmits a signaling stream and a media stream; an S1/X2 interface; an external interface; IPMI: an internal peripheral management interface defined by the uTCA standard; and UART, namely a system clock and a radio frequency reference clock are provided between CC, SA and PM, so that RRC \ PDCP \ RLC \ MAC \ PHY layer protocols are realized, and wireless access control and mobility management are completed.

fig. 5 shows a main board wiring diagram of the in-vehicle communication system. After the system is powered on, a toggle mode selection switch is adopted, the function locking is realized, the misoperation is prevented, the configuration parameters are read from the mainboard, the channel of the radio frequency transceiver is initialized, and all data on the channel are monitored. The mainboard adopts an IMX6Q/DL/S processor for an HBGK3501 product, and the product has high integration level, low power consumption and rich interfaces. The mainboard supports VGA + LVDS + HDMI various display interfaces, 1 kilomega network port, 5 COM ports, 1x TF card, 2x SATAII, 5 USB2.0, 1 USB (OTG), 1 MINI PCIe interface, onboard power amplifier, WiFi and 3G modules, onboard SIM card socket and 3G network, and comprises COM4 on the mainboard, and an IDC2 chip is connected with a front panel handle serial port; the COM3 and the IDC2 and 5 chips on the mainboard are connected with the positioning module; the AUDIO chip on the mainboard is connected with the AUDIO of the front panel in a PIN connection mode; the USB34 chip on the mainboard is connected with the front panel USB interface in a PIN connection PIN mode; the JGP10 chip on the mainboard is connected with a front panel P4, a GPIO and a power supply JPIO interface; JYDS on the mainboard, the LVDS chip connects front panel P4 interface, Ad hoc network AP and LTE AP play the effect of power amplifier, mainly carry out signal amplification's function and effect, can send the signal that receiving and dispatching sent to greatly, the filtering interference makes signal transmission reliable and stable, in order to ensure radio frequency antenna's signal strength, when carrying out the casing design, under the circumstances that the casing size allows, accomplish the shortest to Ad hoc network power amplifier, the feeder distance of LTE power amplifier to the aerial plug-in antenna, the bending of feeder is also accomplished fewest, in order to reduce the loss of signal in transmission process.

Fig. 6 shows a power supply wiring diagram of the in-vehicle communication system.

fig. 6(a) includes a power management board and a voltage regulator module (24v to 12v), including a pwm integrated circuit TL 3843P. DC24V air-plug power inserts the main battery interface to the power strip, main battery switch connects the fuse box, then give the mainboard through the mainboard interface with 12V power supply, the POE switch, the network board of ad hoc, network power amplifier of ad hoc, the front panel, the rear panel, equipment such as LTE board and LTE power amplifier, through fuse box and power switching control protection circuit, avoid the maloperation or the high voltage surge of introducing to restrain, this design is automatic power consumption mode and acquiescence and is in long receiving state, actual measurement static power consumption is 20uA under this state, the transmitting current is 3mA, can prolong service life greatly, be applicable to high temperature application range.

as shown in fig. 6(b), the first set of terminals of the power switching control is connected to the front and rear panels, 12V for connecting 1 and 2 to the front and rear panels, and GND for connecting 3 and 4 to the front and rear panels; the second group of terminals are connected with 24V connected with the LTE power amplifiers 1 and 2, and the second group of terminals are connected with GND connected with 3 and 4; the third group of terminals is connected with LTE, 1 and 2 are connected with 12V, and 3 and 4 are connected with GND; the fourth group of terminals is connected with an ad hoc network, 1 and 2 are connected with 12V, and 3 and 4 are connected with GND; the fifth group of terminals is connected with the main board, 1 and 2 are connected with 12V, and 3 and 4 are connected with GND; the sixth group of terminals is connected with a POE switch, 1 and 2 are connected with 12V, and 3 and 4 are connected with GND; the seventh group is connected with the Beidou positioning, 1 and 2 are connected with 12V, and 3 and 4 are connected with GND.

The power supply control board DYLB24 outputs 12V direct current, and the control core device is a pulse width modulation integrated circuit TL3843P (which contains an oscillator, a pulse width modulation comparator and a logic controller, has protection and control functions of overcurrent, undervoltage and the like, the highest working frequency can reach 500MHz, and the starting current only needs ImA). The function of each pin is as follows: (1) the pin is the output of the internal error amplifier and there is typically a feedback network between pin (2) and the pin to determine the gain of the error amplifier. (2) The pin is a feedback voltage input end which is used as an inverting input end of the internal error amplifier, and the feedback voltage input end is compared with a reference voltage (+2.5V) of a non-inverting input end to generate an error control voltage and control the pulse width. (6) And a pin overcurrent detection input end which forbids the output of the driving pulse when the voltage of the connected person is higher than 1V. (4) The pin is a common connection end of an RT/RC timing resistor and a capacitor and is used for generating sawtooth oscillation waves. (5) The pin is a grounding end. (6) The pin is a pulse output end with adjustable pulse width. (7) The pin is a working voltage input end (10V Vi is less than or equal to 30V). (8) The pin is the internal reference voltage (VREF ═ 5v) output terminal.

Fig. 7 is a block diagram showing a communication system of a center station of the present invention.

The central station communication system based on the regional broadband wireless network is characterized in that internal components are connected through network interfaces, an ad hoc network antenna and an LTE antenna are connected to an ad hoc network and an LTE board through radio frequency filters, then signals are sent to a main board through a network switch for control, and positioning information is sent to the main board through a positioning antenna through an antenna interface. The broadband wireless system supports various wireless frequencies, can flexibly configure various bandwidths from 5MHz to 20MHz, and supports same-frequency networking; the LTE and the ad hoc network are sequentially connected with a radio frequency filter, and the other end of the radio frequency filter is connected with an antenna interface; the EPC server main board and the CMT server main board are connected with the LTE board and the ad hoc network board through a switch, and data are transmitted through a network. The frequency of 600MHz (566 + 678MHz) is adopted in the project. The invention can be used for providing access service for broadband mobile users, has the functions of broadband service exchange, service and network management, and provides services such as confidential voice, data, video and the like.

The network interface and the mainboard are interface circuits with automatic power consumption modes, and port protection devices are arranged on ports.

After the system is powered on, a toggle mode selection switch is adopted, the function locking is realized, the misoperation is prevented, the configuration parameters are read from the mainboard, the channel of the radio frequency transceiver is initialized, and all data on the channel are monitored; when the radio frequency transceiver receives the spatial radio frequency data, the received data is forwarded to the MCU serial port, and then the radio frequency receiving and the MCU serial port receiving are continuously monitored; when the LTE antenna or the ad hoc network antenna receives data, whether the data is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified and stored in a CMT server mainboard; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through a CMT server mainboard; when the LTE antenna or the ad hoc network antenna receives a signal, whether the signal is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified through an EPC server main board; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through an EPC server mainboard and then the receiving of data information is monitored continuously. The system is installed on various moving military vehicles and can be wirelessly accessed to a network consisting of fixed base stations. And carrying out voice call with other terminals or dispatching stations. The handle is used for dialing and calling to carry out talkback operation. The video image of the vehicle-mounted network cloud platform camera can be accessed as required and is transmitted back to the dispatching desk, and a user can remotely control the operation of the cloud platform at the dispatching desk. The system position movement information can be displayed on the dispatching desk. The structural design principle is convenient to fix, the safety of people in the vehicle is guaranteed during the running of the vehicle, a case fixing mode is adopted, and other devices are convenient to carry. A temperature and humidity sensor can be externally arranged as required to be connected with the mainboard.

the ad hoc network power amplifier and the LTE power amplifier are respectively and independently shielded.

the ad hoc network board is a ZSJQ-CPE-ZW model ad hoc network board and comprises a GE interface, an S1 interface, an external interface, an IPMI interface, a UART interface and the like.

External interface: external access may be supported, such as through a browser

IPMI interface: an internal peripheral management interface defined by the uTCA standard; an open standard hardware management interface specification;

a UART interface, wherein a CC terminal and an SA terminal are adopted, and a system clock and a radio frequency reference clock are provided between PM terminals;

The functions of the system are realized by RRC \ PDCP \ RLC \ MAC \ PHY layer protocol, automatic networking, automatic discovery, automatic performance adjustment, automatic link repair, BPSK modulation mode and QPSK or 16QAM to complete wireless access control.

the LTE board is a ZX-CPE-MB type LTE board and comprises a GE interface, an S1 interface, an X2 interface, an external interface and an IPMI interface;

External interface: external access can be supported, such as access through a browser;

IPMI interface: an internal peripheral management interface defined by the uTCA standard; hardware management interface specification of open standard

A UART interface, wherein a CC terminal and an SA terminal are adopted, a system clock and a radio frequency reference clock are provided between PM terminals,

The method realizes RRC \ PDCP \ RLC \ MAC \ PHY layer protocol, the transmitting power is 45dbm × 2 channel (maximum), and the modulation mode QPSK/16QAM/64QAM completes the wireless access control.

the EPC server mainboard is an HBGK3501 type mainboard and adopts an IMX6Q/DL/S processor. The EPC server is mainly responsible for NAS signaling and signaling safety, node signaling between CNs (responsible for internal signaling processing when UE moves between 3GPP access networks), UE reachability management in an ECM idle state (including control and execution of paging retransmission), TA list management, legal monitoring of signaling, transmission function of alarm message (including selection of proper eNodeB), and UE reachability processing. The function of the computer is the universal function of the HBGK3501 type mainboard.

The CMT server mainboard is an HBGK3501 type mainboard and adopts an IMX6Q/DL/S processor. The CMT server is mainly responsible for information storage and control and bearer management functions, including establishment of a special bearer, network equipment access authentication and authorization. The function of the computer is the universal function of the HBGK3501 type mainboard.

The central station communication system is suitable for a loading mobile platform, is a mobile node of a broadband wireless access system, provides access for broadband mobile users, has broadband service exchange, service and network management functions, provides confidential services such as voice, data and video, deploys emergency communication base stations in the field, realizes LTE wireless broadband coverage, realizes services such as video return and voice communication through equipment such as a broadband mobile user carrying platform, a communication command vehicle carrying platform and a handheld terminal, and is integrally designed in a three-prevention mode, various devices and equipment are embedded, and the rapid deployment functions of transportation, deployment and sorting recovery are realized. Under the quasi-flat terrain, 20MHz carrier bandwidth is adopted, a vehicle-mounted central station is communicated with a regional broadband access system user terminal, an antenna frame of the vehicle-mounted central station is 15 meters high, a user vehicle-mounted station and a multi-user portable access device antenna frame are 3.5 meters high, the system communication coverage is realized, a user carrying platform and a user handheld platform are normally used, and the system communication coverage performance is realized.

The multi-user communication system based on the regional broadband wireless network is characterized in that internal components are connected through network interfaces, an ad hoc network antenna and an LTE antenna are connected to an ad hoc network and an LTE board through a radio frequency filter, and then signals are sent to equipment connected with a network port through a network POE switch to be controlled. The broadband wireless system supports various wireless frequencies, can flexibly configure various bandwidths from 5MHz to 20MHz, and supports same-frequency networking; the LTE and the ad hoc network are sequentially connected with a radio frequency filter, and the other end of the radio frequency filter is connected with an antenna interface; the external equipment connection net mouth passes through the switch and connects LTE board and ad hoc network board, and data are transmitted through the network. The frequency of 600MHz (566 + 678MHz) is adopted in the project. The invention can be used for providing access service for broadband mobile users, has the functions of broadband service exchange, service and network management, and provides services such as confidential voice, data, video and the like.

The ad hoc network power amplifier and the LTE power amplifier are respectively and independently shielded. The power input is connected with the POE switch, and power is supplied to the system through the POE switch.

the network interface is provided with an interface circuit in an automatic power consumption mode, and a port protection device is arranged on a port, and the maximum transmitting power is 4W.

After the system is powered on, a toggle mode selection switch is adopted, the function locking is realized, the misoperation is prevented, the channel of the radio frequency transceiver is initialized, and all data on the channel are monitored; the network POE switch port 1 is connected with an ad hoc network mainboard, then is connected with an ad hoc network power amplifier, and then is connected with an ad hoc network antenna interface through a feeder; the network port 2 is connected with an LTE mainboard, connected with an LTE power amplifier and then connected with an LTE antenna interface through a feeder; network ports 3, 4, 5, 6, connecting front panel LANs 1, 2, 3, 4; the ad hoc network power amplifier and the LTE power amplifier play a role in power amplification, mainly have a function and a role in signal amplification, can transmit and receive signals, filter interference to enable signal transmission to be stable and reliable, and when a shell is designed to guarantee the signal strength of a radio frequency antenna, the distances between feeder lines of the ad hoc network power amplifier and the LTE power amplifier to an aerial antenna are shortest under the condition that the size of the shell is allowed, and the bending of the feeder lines is also minimum to reduce the loss of the signals in the transmission process. When the radio frequency transceiver receives the spatial radio frequency data, the received data is forwarded to the MCU serial port, and then the radio frequency receiving and the MCU serial port receiving are continuously monitored; when the LTE antenna or the ad hoc network antenna receives data, whether the data is a configuration command or a data command is analyzed, and when the configuration command is received, corresponding parameters are modified and stored in corresponding equipment; when the LTE antenna or the ad hoc network antenna receives a data command, the data command is directly sent to corresponding equipment through a network port; and then continues to listen for receipt of data information. The system is installed on various moving military vehicles and can be wirelessly accessed to a network consisting of fixed base stations. And carrying out voice call with other terminals or dispatching stations. The handle is used for dialing and calling to carry out talkback operation. The video image of the vehicle-mounted network cloud platform camera can be accessed as required and is transmitted back to the dispatching desk, and a user can remotely control the operation of the cloud platform at the dispatching desk. The system position movement information can be displayed on the dispatching desk. The structural design principle is convenient to fix, the safety of people in the vehicle is guaranteed during the running of the vehicle, a case fixing mode is adopted, and other devices are convenient to carry.

Claims

1. A communication system based on a regional broadband wireless network, characterized by: comprises a piggyback communication system, a vehicle-mounted communication system, a multi-user communication system and a central station communication system, wherein

2. The communication system according to claim 1, wherein: bear communication system includes tall and erect mainboard of ann, ad hoc network baseband board, LTE baseband board, POE switch, code card and power management unit, wherein

3. The communication system according to claim 1, wherein: the vehicle-mounted communication system comprises a mainboard, an ad hoc network baseband board, an LTE baseband board, a POE switch and a power management unit, wherein the power management unit is connected with the mainboard through the POE switch

4. The communication system according to claim 1, wherein: the multi-user communication system comprises an ad hoc network baseband board, an LTE baseband board and a POE switch, wherein

the POE switch accesses the network through a plurality of network interfaces.

5. the communication system according to claim 1, wherein: the central station communication system comprises an EPC server, a CMT server, an ad hoc network baseband board, an LTE baseband board and a power supply voltage reduction module, wherein

6. the communication system based on the regional broadband wireless network according to any one of claims 2 to 5, wherein: the ad hoc network baseband board is a ZSJQ-CPE-ZW type ad hoc network baseband board and comprises a GE interface, an S1 interface, an external interface, an IPMI interface and a UART interface.

External interface: external access is supported;

7. the communication system based on the regional broadband wireless network according to any one of claims 2 to 5, wherein: the LTE baseband board is a ZX-CPE-MB type LTE baseband board and comprises a GE interface, an S1 interface, an X2 interface, an external interface and an IPMI interface;

External interface: external access is supported;

8. the communication system based on the regional broadband wireless network according to any one of claims 2 to 5, wherein: the distance from the LTE power amplifier to a feeder line of an LTE antenna is shortest; and the feeder distance from the ad hoc network power amplifier to the ad hoc network antenna is shortest.

9. the communication system according to claim 5, wherein: the EPC server is an HBGK3501 model mainboard, adopts an IMX6Q/DL/S processor, and is used for receiving node signaling between NAS signaling and CN, and is responsible for signaling safety, legal monitoring of the signaling and UE accessibility management in an ECM idle state.

10. the communication system according to claim 5, wherein: the CMT server is an HBGK3501 type mainboard, and an IMX6Q/DL/S processor is adopted to be responsible for information storage and control, special bearing establishment, network equipment access authentication and authorization.

11. the communication system according to claim 4, wherein: the network interface is an interface circuit with an automatic power consumption mode, a port protection device is arranged on a port, and the maximum transmitting power is 4W.

12. The communication system according to claim 2, wherein: the battery pack comprises a main battery and a backup battery, the main battery is connected with the power management unit and supplies power to the power management unit, when the main battery is replaced, the power management unit switches the power supply into the backup battery, the backup battery supplies power uninterruptedly, and when the main battery is replaced, the backup battery is switched into the main battery to supply power.