A kind of central station communication system based on regional broadband wireless network
Technical field
The utility model relates to wireless communication field, specifically a kind of central station based on regional broadband wireless network
Communication system.
Background technique
With the rapid growth of mobile communication and the huge advance of technology, the world has moved towards one and has interconnected completely
A networked society, wherein regional broadband wireless access communication system number of devices greatly increases.Especially wireless communication system is complete
It is kind, it has been stepped up various wireless instruments and control equipment.I.e. anyone or anything at any time and Anywhere all
Information and shared data can be obtained.
However when largely using this wireless instrument and equipment, field device wireless network is in the state of unknown, newly
Existing device will be interfered by increasing wireless device, or be interfered to newly added equipment, be easy to bring it about co-channel interference and
Adjacent frequency interference, wireless device coverage area is too small, signal covering is difficult between each equipment, own networking covers model to tables of equipment alone
It is with limit, in the case where particular surroundings does not have signal, eventually leads to communication failure before each equipment.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of central station communication based on regional broadband wireless network
System.
The utility model technical solution used for the above purpose is:
A kind of central station communication system based on regional broadband wireless network, including EPC server, CMT server, from group
Net baseband board, LTE baseband board and power voltage step down module, wherein
Ad hoc network baseband board passes sequentially through ad hoc network power amplifier and connects ad hoc network antenna, ad hoc network with radio-frequency filter
Antenna is filtered after receiving wireless signal by radio-frequency filter, and filtered wireless signal is passed through ad hoc network power amplification
Device is sent to ad hoc network baseband board after carrying out power amplification;Ad hoc network baseband board is connect by interchanger with EPC server, is sent
Data-signal is to EPC server;After EPC server is to the data-signal processing received, sends control signal and pass through interchanger
It is sent to ad hoc network baseband board, and by emitting after ad hoc network power amplifier and radio-frequency filter by ad hoc network antenna;From
Networking baseband board is connect by interchanger with CMT server, sends data information to CMT server;CMT server is to receiving
Processing data information after, send license and authorization message by interchanger be sent to ad hoc network baseband board, and pass through ad hoc network
Emitted after power amplifier and radio-frequency filter by ad hoc network antenna;
LTE baseband board passes sequentially through LTE power amplifier and connects LTE antenna with radio-frequency filter, and LTE antenna receives LTE
It is filtered after signal by radio-frequency filter, by filtered LTE signal after LTE power amplifier carries out power amplification
It is sent to LTE baseband board;LTE baseband board connects interchanger, is connect, is sent data signals to EPC server by interchanger
EPC server;After EPC server is to the data-signal processing received, interchanger is sent control signals to, is sent out by interchanger
It is sent to LTE baseband board, and by emitting after ad hoc network power amplifier and radio-frequency filter by LTE antenna;LTE baseband board is logical
It crosses interchanger to connect with CMT server, sends data information to CMT server;CMT server to the data information received at
After reason, license and authorization message are sent by interchanger and is sent to LTE baseband board, and is filtered by LTE power amplifier and radio frequency
Emitted after wave device by LTE antenna;
Power voltage step down module, connection EPC server, CMT server, ad hoc network baseband board, LTE baseband board, LTE power are put
Big device and ad hoc network power amplifier, provide supply voltage for it.
The EPC server is HBGK3501 model mainboard, using IMX6Q/DL/S processor, for receiving NAS signaling
Node signaling and responsible signaling security between CN, to the Lawful Interception of signaling, and in the UE accessibility pipe of ECM Idle state
Reason.
The CMT server is HBGK3501 model mainboard, using IMX6Q/DL/S processor, be responsible for information storage and
Control, the foundation of dedicated bearer, network equipment access authentication and authorization.
The ad hoc network baseband board be ZSJQ-CPE-ZW model ad hoc network baseband board, comprising GE interface, S1 interface, externally
Interface, IPMI interface and UART interface.
GE interface: the interface of CC terminal and BPL terminal transmission signaling flow and Media Stream;
S1 interface;S1 interface is the communication interface between LTE base station and packet-based core networks EPC;
External interface: Outside Access is supported;
IPMI interface: the inside Peripheral Management Interface that uTCA standard defines;
UART interface: CC terminal and SA terminal, using providing system clock and radio frequency reference clock between PM terminal.
The LTE baseband board be ZX-CPE-MB model LTE baseband board, comprising GE interface, S1 interface, X2 interface, to external
Mouth and IPMI interface;
GE interface: the interface of CC terminal and BPL terminal transmission signaling flow and Media Stream;
S1 interface: S1 interface is the communication interface between LTE base station and packet-based core networks EPC;
X2 interface: the interaction of the signaling information between two LTE base stations is supported;
External interface: Outside Access is supported;
IPMI interface: the inside Peripheral Management Interface that uTCA standard defines;
UART interface: CC terminal and SA terminal, using providing system clock and radio frequency reference clock between PM terminal.
The feeder line distance of the LTE power amplifier to LTE antenna is most short;Make the ad hoc network power amplifier to from group
The feeder line distance of net antenna is most short.
The ad hoc network power amplifier and LTE power amplifier are individually shielded.
The utility model has the advantages that and advantage:
1. the utility model can to regional broadband wireless access communication, can monitor protocol data in channel, facility information,
The network information, Web broadcast, healthy message etc.;
2. the utility model is individually shielded some modules progress with electromagnetism, such as PA module, power supply pressure stabilizing conversion module
It is separately in different cavity body, internal copper-surfaced paper shielding reduces the electromagnetic interference of intermodule;
3. the feeder line distance of ad hoc network power amplifier, LTE power amplifier to air plug antenna is accomplished most short, the folding of feeder line by the utility model
It is curved also to accomplish at least, to reduce loss of the signal in transmission process, to ensure the signal strength of radio-frequency antenna;
4. power control board is that 24v exports 12V DC electricity by the utility model, power control board is integrated for pulsewidth modulation
Circuit, this is designed as automatic power consumption mode and default in long reception state, can greatly prolong service life, be suitable for high-temperature
Use scope;
It is the flexibility point of broadband wireless access system 5. the utility model is suitable for loading motor platform, is moved for broadband
It employs family and access is provided, have broadband services exchange, business service and Network Management Function, speech, the data, view of secrecy are provided
Emergency communication base station is disposed in the business such as frequency, field, realizes the covering of LTE WiMAX, bears platform and logical by wideband mobile subscriber
The equipment such as letter commander Vehicle mounted station, handheld terminal realize the business such as video passback and voice communication, whole to use three-proof design, embed
All kinds of devices and equipment realize transport, deployment and the rapid deployment function of arranging recycling;Under quasi- level terrain, using 20MHz
Carrier bandwidths, vehicle-mounted central station and regional broadband access system user terminal communication, vehicle-mounted center station antenna frame is 15 meters high, user
Vehicle mounted station and the portable access device antenna vehicle frame of multi-user are 3.5 meters high, and system communication covering, user bears platform, user's hand-held station
Normal use, system communication covering performance.
Detailed description of the invention
Fig. 1 is the system construction drawing of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
It is as shown in Figure 1 the system construction drawing of the utility model.
Central station communication system based on regional broadband wireless network, various components inside are connected by network interface, from
Networking antenna and LTE antenna are connected to ad hoc network and LTE plate by radio-frequency filter, are then given signal by the network switch
It is controlled to mainboard, location information is given to by antennal interface by mainboard by positioning antenna.The broadband wireless system is supported more
Kind wireless frequency, and flexibly configurable 5MHz to 20MHz various bandwidth, support identical networking;LTE and ad hoc network, which are sequentially connected, penetrates
The other end of frequency filter, radio-frequency filter is connected with antennal interface;CMT server master board and EPC server master board pass through friendship
It changes planes and connects LTE plate and ad hoc network plate, data are transmitted by network.This project uses 600MHz (566-678MHz)
Frequency.The utility model can be used for providing access service for wideband mobile subscriber, have broadband services exchange, business service and net
Network management function provides the business such as speech, data, the video of secrecy.
Network interface and mainboard are the interface circuit with automatic power consumption mode, and are equipped with port-guard device in port.
After system electrification, using dial type mode selection switch, there is function locking, prevent maloperation, read from mainboard
Configuration parameter initializes the channel of RF transceiver, begins listening for all data on the channel;When RF transceiver receives
When the rf data in space, by the data forwarding received to MCU serial ports, then proceedes to monitor radio frequency reception and MCU serial ports connects
It receives;When LTE antenna or ad hoc network antenna receive data, analysis is configuration order or data command, receives configuration life
When enabling, relevant parameter is modified, and store the parameter to CMT server master board;When LTE antenna or ad hoc network antenna receive data
When order, relevant device is sent directly to by CMT server master board;When LTE antenna or ad hoc network antenna receive signal,
Analysis is configuration order or data command, when receiving configuration order, modifies relevant parameter by EPC server master board;When
When LTE antenna or ad hoc network antenna receive data command, by EPC server master board be sent directly to relevant device then after
The reception of continuous monitored data information.System is mounted on mobile various military vehicles, can pass through wireless access to fixed base
Stand composition network.Voice communication can be carried out with other terminals or dispatching desk.Dialled using handle, call operation into
Row intercommunication operation.The video image of In-vehicle networking cradle head camera can be accessed as needed, and pass back to dispatching desk, user can be with
Holder operation is remotely controlled in dispatching desk.System position mobile message can be shown on dispatching desk.Structure design principle in order to
Convenient for fixation, guarantees the security consideration in vehicle driving to occupant, using cabinet fixed form, and be convenient for carrying other set
It is standby.It peripheral configuration Temperature Humidity Sensor can be connect as needed with mainboard.
The ad hoc network plate is ZSJQ-CPE-ZW model ad hoc network plate, includes GE interface, S1 interface, external interface, IPMI
The interfaces such as interface, UART interface.
GE interface: the interface of CC terminal and BPL terminal transmission signaling flow and Media Stream;
S1 interface;S1 interface is the communication interface between LTE base station and packet-based core networks EPC;
External interface: it can support Outside Access, for example be accessed by browser
IPMI interface: the inside Peripheral Management Interface that uTCA standard defines;A kind of hardware management interface rule of open standard
Lattice;
UART interface: CC terminal and SA terminal, using providing system clock and radio frequency reference clock between PM terminal;
Function realize RRC PDCP RLC MAC PHY layer agreement, automatic network-building, automatic discovery, automatic performance adjust, from
Dynamic link repair, modulation system BPSK, QPSK or 16QAM complete wireless access control.
The LTE plate is ZX-CPE-MB model LTE plate, includes GE interface, S1 interface, X2 interface, external interface, IPMI
Interface;
GE interface: the interface of CC terminal and BPL terminal transmission signaling flow and Media Stream;
S1 interface: S1 interface is the communication interface between LTE base station and packet-based core networks EPC;
X2 interface: the interaction of the signaling information between two LTE base stations is supported;
External interface: it can support Outside Access, for example be accessed by browser;
IPMI interface: the inside Peripheral Management Interface that uTCA standard defines;A kind of hardware management interface rule of open standard
Lattice
UART interface: CC terminal and SA terminal, using providing system clock and radio frequency reference clock between PM terminal,
Realize RRC PDCP RLC MAC PHY layer agreement, the channel transmission power 45dbm*2 (maximum), modulation system
QPSK/16QAM/64QAM completes wireless access control.
The EPC server master board is HBGK3501 model mainboard, using IMX6Q/DL/S processor.Wherein EPC is serviced
Device, which is mainly responsible for the node signaling between NAS signaling and signaling security, CN, (to be responsible for inside when UE is moved between 3GPP access net
Signaling processing), the UE accessibility management (including control and execute paging retransmit) in ECM Idle state, TA list management, to letter
The Lawful Interception of order, the transfer function (including the suitable eNodeB of selection) of alarm information, UE are up to processing.Its function is
The general utility functions of HBGK3501 model mainboard.
The CMT server master board is HBGK3501 model mainboard, using IMX6Q/DL/S processor.Wherein CMT is serviced
Device is mainly responsible for the storage and control, bearer management function of information, foundation, network equipment access authentication including dedicated bearer and
Authorization.Its function is the general utility functions of HBGK3501 model mainboard.
This central station communication system is suitable for loading motor platform, is the flexibility point of broadband wireless access system, for width
Band mobile subscriber provide access, has broadband services exchange, business service and Network Management Function, provides speech, the number of secrecy
According to business such as, videos, emergency communication base station is disposed in field, is realized the covering of LTE WiMAX, is born platform by wideband mobile subscriber
The business such as video passback and voice communication are realized with equipment such as traffic guidance's Vehicle mounted station, handheld terminals, it is whole to use three-proof design,
All kinds of devices and equipment are embedded, realizes transport, deployment and the rapid deployment function of arranging recycling.Under quasi- level terrain, use
20MHz carrier bandwidths, vehicle-mounted central station and regional broadband access system user terminal communication, vehicle-mounted center station antenna frame are high by 15
Rice, user's Vehicle mounted station and the portable access device antenna vehicle frame of multi-user are 3.5 meters high, and system communication covering, user bears platform, user
Hand-held station normal use, system communication covering performance.