CN205793397U - TD-LTE integration scytoblastema station - Google Patents

Abstract

This utility model relates to TD LTE integration scytoblastema station, including the POE power supply chip being linked in sequence, Ethernet chip, baseband processor, rf control unit, power amplifier unit, duplexer, antenna, and the modem that is connected with baseband processor and watchdog circuit.This utility model networking is convenient, and a netting twine easily realizes MIMO and power supply, cracks a room point difficult problem；Support multiple passback mode, flexible networking；Can realize accurately covering, the handling capacity of region inner area is compared macro station and is greatly improved, fast lifting capacity；Information source and covering can be provided simultaneously.

Description

TD-LTE integration scytoblastema station

Technical field

This utility model relates to the mobile 4G communications field, is specifically related to a kind of TD-LTE integration scytoblastema station, It is easy to build a station, is mainly used in MPS process or mends blind, can be more flexible relative to tradition macro station.

Background technology

In 2015, three operators imbalance in 4G growth momentum did not stop that domestic 4G entirety is used The very fast growth of amount.By in by the end of November, 15, domestic 4G number of users has broken through 3.56 hundred million, and 4G is several Have become as " basic " network for Deta bearer.But such situation allows 4G business number the most further Gradually aggravate according to the energy imbalance between the growth measured and in-door covering network carrying ability, a concrete table As being exactly, the indoor weak covering of 4G, edge throughput reduce and focus connects the problems such as limited, cause 4G The best multiple experience such as the network speed decline of user, Connection Time lengthening, jitter.Compare network Basis covers for this " early stage " engineering, domestic 4G network arrived urgently carry out concurrent heating mend blind, Coverage optimization, the critical stage of capacity boost.And integration scytoblastema station supports that single-point puts dress, principal and subordinate's extension The in-door covering mode of the types such as covering, multiple stage networking, put into low, networking is convenient, is that one is the most flexible New indoor coverage mode.

Utility model content

For the deficiencies in the prior art, this utility model provides a kind of TD-LTE integration scytoblastema station.

This utility model the technical scheme is that TD-LTE integration scytoblastema station, Including the POE power supply chip being linked in sequence, Ethernet chip, baseband processor, rf control unit, power amplifier list Unit, duplexer, antenna, and the modem that is connected with baseband processor and watchdog circuit.

Described power amplifier unit is two, and each power amplifier unit includes that a power amplifier and a low noise are put Big device.

Described duplexer is two, and each duplexer is connected with an antenna.

The transmitting terminal of described duplexer is connected with antenna, receives prevention at radio-frequency port by power amplifier and radio frequency control The transmitting terminal of device processed connects, and sends prevention at radio-frequency port and is connected by the receiving terminal of low-noise amplifier with rf control unit Connect.

The GPIO interface of described baseband processor is connected for the pin feeding Canis familiaris L. with house dog.

Described watchdog circuit is connected with external reset line.

The reseting controling end of described watchdog circuit is connected with baseband processor.

It is connected to the network interface for being powered by netting twine outside described POE power supply chip.

The output of described POE power supply chip is connected with DC modular converter, for being powered by DC modular converter.

Described modem uses 2G cat module.

This utility model has the advantages that and advantage:

1. this utility model networking is convenient, and a netting twine easily realizes MIMO and power supply, cracks a room point difficult problem； Support multiple passback mode, flexible networking；Can realize accurately covering, the handling capacity of region inner area is compared grand Station is greatly improved, fast lifting capacity；Information source and covering can be provided simultaneously.

2. this utility model can provide the access service of 4G and WiFi simultaneously.

3. this utility model possesses independent source, and tradition repeater is a power amplifier, needs to pass through Coupling distribution source mode, it extracts a road signal, realizes indoor distribution through amplification etc. from base station, and only Vertical information source refers to the signal that base station portion emits, it is only necessary to by fixed network broadband access to mobile core network EPC obtains information source information.

3. this utility model volume is little, integrated level is high, baseband radio unites two into one, antenna integrated also can be only Vertical installation.

4. this utility model uses POE or independent current source to be powered, will not when POE and power supply are powered simultaneously Equipment is damaged.

5. this utility model uses radio frequency and antenna to integrate, it is achieved that scytoblastema station integration.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings and this utility model is described in further detail by embodiment.

This utility model integration scytoblastema station is by TD-LTE baseband processor, rf control unit, low noise amplification Device, high power amplifier, POE power supply chip, watchdog circuit, interior external double antenna, modem etc. Composition.Originally in base station, radio frequency amplifier section and antenna distribution are all separate, and this utility model will be penetrated Frequency and antenna set are integrally forming, i.e. integration scytoblastema station, and scytoblastema station refers to the little base station of enterprise-level, power etc. Between level 100mW～500mW.

This utility model possesses independent source, and base band and radio frequency part or antenna are integrated by it, due to Traditional repeater application must cover by means of information source, and therefore the construction for integration scytoblastema station comes Saying, website is coordinated difficulty and is reduced, and the construction period is short, convenient later maintenance.By fixed network broadband access to moving Dynamic core net EPC obtains information source information, and main equipment to be passed through provides.

This utility model is according to 3GPP Release 8 and Release 9 specification and China Mobile " TD-LTE Wireless network main equipment specification " it is designed, and passed through China Mobile academy " TD-LTE wireless network Main equipment test specification " test, it therefore meets operator reach the standard grade dispose condition.

This utility model uses advanced SoC scheme (system level chip), it is possible to reduce the cost of equipment；Its Middle TD-LTE baseband processor is monolithic double-core (CPUH and CPUL), for BROADCOM company BCM61755IFSB chip, independent LTE/3G DSP (FirePath)

As it is shown in figure 1, this utility model possesses the radio circuit design of maturation.

1, rf control unit ADI9362/9363；2, TX high power amplifier；3, RX low-noise amplifier. The ADI9362/9363 that rf control unit uses, it is the equipment utilizing radio frequency to realize transmitting signal, including The process received and send out and realize receiving and dispatching includes signal processing, modulation /demodulation, amplifies, and receives circuit and sends out Penetrating reception antenna, radio-frequency front-end generally refers to receive radiofrequency signal, then the signal received is transferred to radio frequency Processing equipment processes, and it is connected with baseband processor by spi bus and realizes controlling function, passes through TX/RX Being connected with high power amplifier and low-noise amplifier, operating frequency is 650MHz-2.7GHz.

High power amplifier uses the MGA-43040 chip of AVAGO company, operating frequency 2.4GHz, maximum Output 27.0dBm, it is ensured that temperature rising causes power loss to be less than ± 1dbm, and it has been internally integrated radio frequency Switch, well realizes the enlarging function of downlink signal.

Low-noise amplifier outfan is provided with band filter and ensure that superelevation receiving sensitivity and signal to noise ratio, energy Enough realizing the amplification of uplink receiving signal, band filter uses the band filter of 2.4GHz to be not limited to certain The concrete model of individual producer, it is possible to realize the filtering to out of band signal.

Crystal oscillator uses SQC company VC-TCXO 19.2MHZ TVX-400AC VCS224A, and its nominal frequency is 19.2MHz.Scytoblastema station passes through receiver, periodic receipt Reference BTS (macro station or small station) signal, demodulation Go out the time synchronized between the frequency departure between small station and Reference BTS, phase deviation, frame number, realization station.

Ethernet chip is BROADCOM company Single-Port 10/100/1000BASE-T Transceiver BCM54618SEA2KFBG, refers to transmit on the twisted-pair the ether of 10/100/1000Mb/s baseband signal Net.Integration scytoblastema station network interface obtains information source by fixed network broadband access to mobile core network EPC, passes through Ethernet chip, is delivered to baseband processor by information source information and processes.

POE power supply chip uses MAX5974aete+Maxim, input voltage 42V～57V, exports 5V/6mA, It uses IEEE-802.3af PoE standard, and up to 30W exerts oneself, and has ensured that the power supply that LTE works is stable, Reduce scene power supply difficulty, support that 48VDC direct-furnish and POE power, and Anti-surging impact.

DC modular converter is for including POE power supply chip, Ethernet chip, base band to other chip power supplies Processor, rf control unit, power amplifier unit, duplexer, modem and watchdog circuit.

Independent hardware watchdog chip, this house dog mainly have one for feed Canis familiaris L. pin (general with The GPIO of baseband processor be connected) with a reset pin (being connected with the RESET pin of system), if Changing the level feeding Canis familiaris L. pin the most within a certain period of time, reset pin will change state reset Base-Band Processing Device.This type of house dog one powers on and begins to work, it is impossible to disable it, so system must feed Canis familiaris L. on time, is System recovery capability is high, increases hardware reset and controls to improve the reliability of system.

Independent modem module ZTE MG2639, works in 2G frequency range, by 232 serial ports conversion cores Sheet is connected with baseband processor so that equipment can realize remote monitoring function.

Interior external double antenna design, therefore, it is simple to carry out building deployment by room subsystem, eliminates covering blind District.Built-in, external antenna uses one-touch switching, and site operation is simple and convenient.Can be dialled by panel redness Code switch selects.Toggle switch two ends connect an antenna respectively, and toggle switch is positioned on device panel, Next-door neighbour's network interface.But radiofrequency signal can only be exported by one of which and can not export from two kinds of antennas simultaneously, Switch upwards (INT), selects built-in beam antenna；Switch downwards (EXT), selects external antenna.It is one Keyed switches, and can connect room subsystem, can meet the requirement to concealed type antenna.

It is provided with housing outside this utility model, uses metal bottom shell design, possess excellent heat dispersion, can Connect the earth, possess electrostatic-proof function, additionally in structure design, taken into full account that wall built-up and ceiling two kinds install mould Formula, the motility that the system of enhancing lays.

For up, receive radiofrequency signal from antenna, through duplexer complete up-downgoing separate, filter laggard Row low noise amplification, then passes to baseband processor by RF processing unit and processes.

For descending, integration scytoblastema station network interface is obtained to mobile core network EPC by fixed network broadband access Information source, by ethernet PHY, is delivered to baseband processor by information source information and processes, through baseband processor Obtain the baseband signal of LTE after agreement solution frame, after again processing, obtain radiofrequency signal, finally by radiofrequency signal Be sequentially sent to power amplifier by RF processing unit, duplexer carries out power amplification, is launched by antenna after filtering Go.

Claims (10)

1.TD-LTE integration scytoblastema station, it is characterised in that: include POE power supply chip, the ether being linked in sequence Web-roll core sheet, baseband processor, rf control unit, power amplifier unit, duplexer, antenna, and with base band at The modem of reason device connection and watchdog circuit.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described power amplifier unit is Two, each power amplifier unit includes a power amplifier and a low-noise amplifier.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described duplexer is two Individual, each duplexer is connected with an antenna.

TD-LTE integration scytoblastema station the most according to claim 3, it is characterised in that sending out of described duplexer Penetrate end to be connected with antenna, receive prevention at radio-frequency port and be connected with the transmitting terminal of rf control unit by power amplifier, Send prevention at radio-frequency port to be connected with the receiving terminal of rf control unit by low-noise amplifier.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described baseband processor GPIO interface and house dog be connected for the pin feeding Canis familiaris L..

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described watchdog circuit It is connected with external reset line.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described watchdog circuit Reseting controling end be connected with baseband processor.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described POE power supply core The network interface for being powered it is connected to by netting twine outside sheet.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described POE power supply core Sheet output is connected with DC modular converter, for being powered by DC modular converter.

TD-LTE integration scytoblastema station the most according to claim 1, it is characterised in that described modem Use 2G cat module.