CN105338666A - Portable multi-band base station equipment - Google Patents
Portable multi-band base station equipment Download PDFInfo
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- CN105338666A CN105338666A CN201510804044.4A CN201510804044A CN105338666A CN 105338666 A CN105338666 A CN 105338666A CN 201510804044 A CN201510804044 A CN 201510804044A CN 105338666 A CN105338666 A CN 105338666A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention relates to portable multi-band base station equipment which comprises a metal shell, a radio frequency subsystem board card and a base band processing subsystem board card, wherein a radio frequency subsystem adopts an external wide band antenna to transmit and receive UL or DL signals and adopts a circulator to isolate the transmitted and received signals; a receiving passage is composed of a wide band low noise amplifier, a power divider, a band-pass filter and front-stage and rear-stage SPnT radio frequency switches and is used for transferring the received signal to a two-way transceiver; a transmitting passage is connected to the circulator through the power amplifier; the two-way transceiver is connected with a base band processing subsystem through an FMC interface; the radio frequency and base band board cards are packaged in the integral metal shell; and an FPGA of the base band processing subsystem is connected with a PC of a user through a PCI-E interface. The portable multi-band base station equipment has the beneficial effects that all communication modes and frequency bands of all operators in China can be supported; the range of application of the portable base station equipment in the external field environment is greatly expanded; and the equipment can also be directly integrated and assembled with a desktop computer or a notebook computer through the PCI-E interface so as to realize more direct and convenient application.
Description
Technical field
The present invention relates to a kind of portable frequency range base station equipment, particularly the portable multiband base station equipment of one.
Background technology
Existing portable base station equipment in the market, mostly can only support the specific single frequency band of certain operator, this is mainly because it adopts duplexer (Duplexer) as the hinge being separated uplink/downlink signal, the bandwidth of duplexer itself is narrower, and this becomes a hardware bottleneck of the existing portable base station of restriction.Along with the formal commercialization of domestic 4GLTE mobile communications network, China's mobile communication frequency range becomes increasingly abundant, and wireless environment is also increasingly sophisticated.Existing portable base station equipment cannot meet the onsite application demand of the engineers and technicians such as operator, the network optimization and network supervision, and existing portable base station equipment can only carry out the two-way communication of uplink/downlink with the mobile phone in community, the downstream signal of other base station in this community can not be received simultaneously, cannot the complicated applications such as the monitoring of pseudo-base station be carried out.
Summary of the invention
In order to improve the bandwidth of operation of portable base station equipment, expand its application, the invention provides a kind of portable multiband base station equipment, can support that the National Radio committee and Ministry of Industry and Information are China Mobile, whole 2G/3G/4GLTE frequency ranges of large operator of CHINAUNICOM and China Telecom three planning, the downstream signal of other base station in community can also be received simultaneously, concrete technical scheme is, a kind of portable multiband base station equipment, comprise metal shell, Radio Frequency Subsystem and baseband, Radio Frequency Subsystem and baseband are respectively independent boards, it is characterized in that: described Radio Frequency Subsystem, be external broad-band antenna foremost, external antenna is connected with Radio Frequency Subsystem board by RF cable, two rightabout signals of transmitting and receiving are undertaken isolating by circulator and are assigned on its respective radio frequency path, receiving path is first amplified through wideband low noise amplifier, wideband low noise amplifier controls its gain by ARM or FPGA of Base-Band Processing board, signal after amplification is made into RX1 and RX2 two receiving paths by a power splitter average mark, RX1 and RX2 receiving path utilizes prime SPnT radio-frequency (RF) switch to be distributed into n and props up reception sub-channel, often prop up the bandpass-type filter receiving different frequency range that sub-channel connects, n props up reception sub-channel and selects the signal of one of them frequency band to send two-way transceiver to through rear class SPnT radio-frequency (RF) switch again, and every grade of SPnT radio-frequency (RF) switch controls its logic by ARM or FPGA on Base-Band Processing board selects wherein a certain sub-channel to carry out Signal transmissions, two-way transceiver connects baseband FPGA by FMC interface, and be encapsulated in a complete metal shell, the FPGA of baseband is connected with user PC by PCI-E interface.
The sub-channel of described RX1 and RX2 path receives being divided into of frequency range, and RX1 path primary responsibility receives with the UL signal of the terminal transmission of FDD mode work, simultaneously also receiving unit with the UL/DL signal of the terminal of TDD mode work and Base Transmitter; RX2 path primary responsibility receives corresponding to RX1 path the DL signal of the Base Transmitter of FDD mode work, simultaneously also reception another part with the UL/DL signal of the terminal of TDD mode work and Base Transmitter.
The invention has the beneficial effects as follows the whole communication standard and frequency range that can support domestic all operators, greatly expand the range of application of portable base station equipment under external field environment.Also can by PCI-E interface directly and desktop computer or the integrated assembling of notebook computer, realization more directly and is easily applied.
Accompanying drawing explanation
Fig. 1 is system hardware Organization Chart of the present invention.
Fig. 2 is RX1 path ten frequency range division figure of the present invention.
Fig. 3 is RX2 path ten frequency range division figure of the present invention.
Fig. 4 is the hardware structure figure of conventional portable base station equipment.
Fig. 5 is domestic three large operator major mobile communication frequency range division tables.
Embodiment
Be described further below in conjunction with embodiment.
As shown in Figure 1, system is mainly divided into radio frequency and the large subsystem of Base-Band Processing two, baseband have been arranged in pairs or groups the modulation /demodulation of digital signal and encoding and decoding by FPGA+DSP, by the control of ARM chip microcontroller to unit each in circuit, this board is connected with PC mainboard the transmission realizing modulating/demodulating digital signal by PCI-E high speed digital interface.Because this part is consistent with the band processing system hardware structure of traditional base station equipment, do not belong to unique technology main points of the present invention, therefore do not elaborate at this.The hardware structure of Radio Frequency Subsystem is the basic place being different from traditional portable base station equipment, discusses in detail below.
Radio Frequency Subsystem and baseband are respectively independent boards, and both are connected by FMC interface, and are encapsulated in a complete metal shell.
The external broad-band antenna of a 800MHz to 2.7GHz that adopts foremost of Radio Frequency Subsystem receives and wireless signal emission, and external antenna turns N-type radio frequency cable by SMA and is connected with Radio Frequency Subsystem board.Transmit and receive two rightabout signals undertaken isolating by circulator and be assigned on its respective radio frequency path, circulator is customized product, and operating frequency range is 800MHz to 2.7GHz, and bandwidth is 60MHz, and isolation is more than 40dB.Receiving path is first amplified through wideband low noise amplifier (LNA), and LNA controls its gain by ARM or FPGA of Base-Band Processing board, and adjustable gain scope is 0dB to 20dB, stepping 0.5dB, uses the ADL5523 of ADI company herein.Signal after amplification is made into RX1 and RX2 two receiving paths by a power splitter average mark, RX1 receiving path is mainly used in receiving with up (UL) signal of the terminal transmission of frequency division duplex mode work, and some UL/DL signal launched with the terminal of time division duplex work and base station equipment.RX2 receiving path for receiving descending (DL) signal that in community, other is launched with the base station equipment of frequency division duplex mode work, and supplements some other the UL/DL signal launched with the terminal of time division duplex work and base station equipment receiving RX1 path and do not support.RX1 and RX2 receiving path utilizes prime SP10T radio-frequency (RF) switch to be distributed into 10 and receives sub-channel; often prop up the bandpass-type Surface Acoustic Wave Filter (SAW) receiving different frequency range that sub-channel connects; as shown in Figure 3 and Figure 4, the frequency range dividing mode of these sub-channels is objects that this patent is laid special stress on protecting in the division of often propping up the filtering frequency range of sub-channel of RX1 and RX2.10 receive sub-channels and select the signal of one of them frequency band to send two-way transceiver (Transceiver) to through rear class SP10T radio-frequency (RF) switch again, and every grade of SP10T radio-frequency (RF) switch controls its logic by ARM or FPGA on Base-Band Processing board and selects wherein a certain sub-channel to open to carry out Signal transmissions.
The core component of Radio Frequency Subsystem is the Transceiver chip of one piece of two-way transmitting-receiving, here the AD9361 radio-frequency (RF) transceiver of ADI company is used, this working frequency of chip scope is 70MHz to 6GHz, bandwidth is 200kHz to 56MHz, by the rational frequency division of different sub-channels of RX1 and RX2 path, can directly whole section receive each mobile communication frequency range described in table 1.The 2320MHz to 2370MHz of such as China Mobile TDD-LTEBand40 is total to the analog signal of 50MHz bandwidth, is entering the RX1 port of AD9361 after the 9th sub-channel filtering of RX1 path.The inner integrated up/down frequency converter of AD9361, can will receive analog signal Direct Conversion becomes to be applicable to the intermediate-freuqncy signal of ADC sampling.RX1 and the RX2 port of AD9361, can receive the DL signal of base station and the UL signal of mobile phone respectively simultaneously; Also can receive the UL/DL signal of time division duplex in a port, then the clock synchronization module separating reducing controlled by FPGA becomes UL and DL bit stream.TX1 is as emission port, and the wideband power amplifer (PA) of external 800MHz to 2.7GHz forms transmitting path, controls transmitting gain, realize the transmitting of base station DL signal by ARM or FPGA of Base-Band Processing board.
Main application scenarios has following several.
(1) by receiving the DL signal of community internal fixtion Base Transmitter, whether normally its running status is detected.
(2) if stationary base station equipment in community occurs abnormal, this portable base station equipment can be used to replace stationary base station equipment temporarily, for the communicating of the mobile terminal such as mobile phone.
(3) signal that the illegality equipments such as pseudo-base station are launched can be searched for and monitor.
The operation principle of this portable base station equipment is introduced below with three kinds of different modes.
Interactive type communication is carried out with the terminal of frequency division duplex mode work
For CHINAUNICOM's 3GWCDMABand1 frequency range, its course of work is described.Certain terminal transmission one belongs to the UL signal of certain channel in 1940MHz to 1955MHz frequency range, and channel width is 5MHz.Due to the noise signal of the various standard and each frequency range that there is other base station equipment and terminal transmission in community, so this signal will be mingled in a very wide band noise signal.All signals that antenna will receive from 800MHz to 2.7GHz, include useful signal and noise signal, then this broadband signal are transferred to circulator.Circulator by its directional transmissions to receiving path.It is transferred to power splitter after LNA amplifies.Power splitter is distributed to RX1 and RX2 path uniformly.The prime SP10T radio-frequency (RF) switch of RX2 controls to be in closed condition by baseband system, will block the transmission of this signal at RX2 path.The SP10T radio-frequency (RF) switch of RX1 path controls to be in passage 6 opening by baseband system.SAW filter range on 6th sub-channel is 1940MHz to 1955MHz, after its filtering, is extracted by useful signal and is transferred to rear class SP10T radio-frequency (RF) switch.Rear class SP10T radio-frequency (RF) switch controls to be in passage 6 opening by baseband system, useful signal is transferred to the RX1 port of Transceiver.Transceiver inside completes after the further amplification/filtering of this radiofrequency signal and down-conversion, the demodulate/decode being transferred to FPGA and the DSP settling signal of baseband through FMC interface forms useful data steam, then data are transferred to PC by PCI-E interface process further.
The reciprocal DL signal by the respective channels belonged in 2130MHz to 2145MHz frequency range of this portable base station equipment is transmitted to terminal simultaneously.This portable base station equipment just completes interactive type communication with the terminal equipment in frequency division duplex mode and community like this.
Interactive type communication is carried out with the terminal of time division duplex work
For China Mobile's 4GLTEBand39 frequency range, its course of work is described.The UL signal of certain channel in certain terminal transmission 1880MHz to 1900MHz frequency range, channel width is 10MHz.This signal also will be mingled in a very wide band noise signal.Antenna to power splitter to the conditioning process of this broadband signal with conditioning process with " carry out interactive type communication with the terminal of frequency division duplex mode work identical.Power splitter is distributed to RX1 and RX2 path uniformly.Herein, the prime SP10T radio-frequency (RF) switch of RX2 controls to be in closed condition by baseband system, will block the transmission of this signal at RX2 path.The SP10T radio-frequency (RF) switch of RX1 path controls to be in passage 7 opening by baseband system.SAW filter range on 7th sub-channel is 1880MHz to 1900MHz, after its filtering, is extracted by useful signal and is transferred to rear class SP10T radio-frequency (RF) switch.Rear class SP10T radio-frequency (RF) switch controls to be in passage 7 opening by baseband system, useful signal is transferred to the RX1 port of Transceiver.Transceiver inside completes after the further amplification/filtering of this radiofrequency signal and down-conversion, the FPGA of baseband is transferred to through FMC interface, first FPGA controls the signal that clock synchronization circuit extracts UL time slot in this signal, carry out demodulate/decode through FPGA and DSP to this signal again and form useful data steam, data are transferred to PC by PCI-E interface and process further.
The DL signal of respective channels that to belong in 1880MHz to 1900MHz frequency range under the control of clock synchronization circuit of this portable base station equipment simultaneously, under the control of FPGA and clock synchronization circuit, at DL slot transmission to terminal.This portable base station equipment just completes interactive type communication with the terminal equipment in time division duplex and community like this.
Receive the base station DL signal with frequency division or time division duplex work
For China Telecom's 3GCDMA2000/1xEV-DOBandClass6 frequency range, its course of work is described.The DL signal of certain channel in certain pseudo-Base Transmitter 2110MHz to 2125MHz frequency range, channel width is 5MHz.This signal will be mingled in a very wide band noise signal.Antenna to power splitter to the conditioning process of this broadband signal with conditioning process with " carry out interactive type communication with the terminal of frequency division duplex mode work identical.Power splitter is distributed to RX1 and RX2 path uniformly.The prime SP10T radio-frequency (RF) switch of RX1 controls to be in closed condition by baseband system, will block the transmission of this signal at RX1 path.The SP10T radio-frequency (RF) switch of RX2 path controls to be in passage 5 opening by baseband system.SAW filter range on 5th sub-channel is 2110MHz to 2125MHz, after its filtering, is extracted by useful signal and is transferred to rear class SP10T radio-frequency (RF) switch.Rear class SP10T radio-frequency (RF) switch controls to be in passage 5 opening by baseband system, useful signal is transferred to the RX2 port of Transceiver.Transceiver inside completes after the down-conversion of this radiofrequency signal and further amplification/filtering, the demodulate/decode being transferred to FPGA and the DSP settling signal of baseband through FMC interface forms useful data steam, then data are transferred to PC by PCI-E interface process further.
Claims (2)
1. a portable multiband base station equipment, comprise metal shell, Radio Frequency Subsystem and baseband, Radio Frequency Subsystem and baseband are respectively independent boards, it is characterized in that: described Radio Frequency Subsystem, be external broad-band antenna foremost, external antenna is connected with Radio Frequency Subsystem board by RF cable, two rightabout signals of transmitting and receiving are undertaken isolating by circulator and are assigned on its respective radio frequency path, receiving path is first amplified through wideband low noise amplifier, wideband low noise amplifier controls its gain by ARM or FPGA of Base-Band Processing board, signal after amplification is made into RX1 and RX2 two receiving paths by a power splitter average mark, RX1 and RX2 receiving path utilizes prime SPnT radio-frequency (RF) switch to be distributed into n and props up reception sub-channel, often prop up the bandpass-type filter receiving different frequency range that sub-channel connects, n props up reception sub-channel and selects the signal of one of them frequency band to send two-way transceiver to through rear class SPnT radio-frequency (RF) switch again, and every grade of SPnT radio-frequency (RF) switch controls its logic by ARM or FPGA on Base-Band Processing board selects wherein a certain sub-channel to carry out Signal transmissions, two-way transceiver connects baseband FPGA by FMC interface, and be encapsulated in a complete metal shell, the FPGA of baseband is connected with user PC by PCI-E interface.
2. portable multiband base station equipment as claimed in claim 1, it is characterized in that: the sub-channel of described RX1 and RX2 path receives being divided into of frequency range, RX1 path primary responsibility receives with the UL signal of the terminal transmission of FDD mode work, simultaneously also receiving unit with the UL/DL signal of the terminal of TDD mode work and Base Transmitter; RX2 path primary responsibility receives corresponding to RX1 path the DL signal of the Base Transmitter of FDD mode work, simultaneously also reception another part with the UL/DL signal of the terminal of TDD mode work and Base Transmitter.
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| CN201510804044.4A CN105338666B (en) | 2015-11-20 | 2015-11-20 | Portable multiband base station equipment |
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| CN201510804044.4A CN105338666B (en) | 2015-11-20 | 2015-11-20 | Portable multiband base station equipment |
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| CN105338666B CN105338666B (en) | 2019-01-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897281A (en) * | 2016-05-06 | 2016-08-24 | 厦门市合佳兴电子有限公司 | Software-defined radio platform based on radio-frequency agile transceiver |
| CN106059618A (en) * | 2016-05-13 | 2016-10-26 | 湖南基石通信技术有限公司 | Method and apparatus for transmitting and receiving signals in radio frequency link |
| CN107070482A (en) * | 2017-02-09 | 2017-08-18 | 杭州柏乐尼通信设备有限公司 | The power amplification system of full operator full system type pictorial covering |
| CN107395218A (en) * | 2017-07-10 | 2017-11-24 | 西安电子科技大学 | R-T unit and design method based on FPGA and radio frequency agile transceiver |
| CN108702552A (en) * | 2016-02-19 | 2018-10-23 | 脸谱公司 | Modular base station |
| CN113285748A (en) * | 2021-04-07 | 2021-08-20 | 上海利正卫星应用技术有限公司 | Miniaturized radio frequency front-end device of satellite-borne communication system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101801122A (en) * | 2009-12-30 | 2010-08-11 | 华为技术有限公司 | Base-band signal processing device, method and multi-mode base station |
| JP2011182101A (en) * | 2010-02-26 | 2011-09-15 | Anritsu Corp | Base station evaluation device and received frequency control method thereof |
-
2015
- 2015-11-20 CN CN201510804044.4A patent/CN105338666B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101801122A (en) * | 2009-12-30 | 2010-08-11 | 华为技术有限公司 | Base-band signal processing device, method and multi-mode base station |
| JP2011182101A (en) * | 2010-02-26 | 2011-09-15 | Anritsu Corp | Base station evaluation device and received frequency control method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108702552A (en) * | 2016-02-19 | 2018-10-23 | 脸谱公司 | Modular base station |
| CN105897281A (en) * | 2016-05-06 | 2016-08-24 | 厦门市合佳兴电子有限公司 | Software-defined radio platform based on radio-frequency agile transceiver |
| CN106059618A (en) * | 2016-05-13 | 2016-10-26 | 湖南基石通信技术有限公司 | Method and apparatus for transmitting and receiving signals in radio frequency link |
| CN106059618B (en) * | 2016-05-13 | 2018-10-19 | 湖南基石通信技术有限公司 | Signal transmit-receive method and device in a kind of radio frequency link |
| CN107070482A (en) * | 2017-02-09 | 2017-08-18 | 杭州柏乐尼通信设备有限公司 | The power amplification system of full operator full system type pictorial covering |
| CN107395218A (en) * | 2017-07-10 | 2017-11-24 | 西安电子科技大学 | R-T unit and design method based on FPGA and radio frequency agile transceiver |
| CN113285748A (en) * | 2021-04-07 | 2021-08-20 | 上海利正卫星应用技术有限公司 | Miniaturized radio frequency front-end device of satellite-borne communication system |
| CN113285748B (en) * | 2021-04-07 | 2022-12-30 | 上海利正卫星应用技术有限公司 | Miniature radio frequency front-end device of satellite-borne communication system |
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