CN102256384A - System configurable radio frequency remote device - Google Patents

System configurable radio frequency remote device Download PDF

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Publication number
CN102256384A
CN102256384A CN2011101765914A CN201110176591A CN102256384A CN 102256384 A CN102256384 A CN 102256384A CN 2011101765914 A CN2011101765914 A CN 2011101765914A CN 201110176591 A CN201110176591 A CN 201110176591A CN 102256384 A CN102256384 A CN 102256384A
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signal
reconfigurable
digital
receive
processing unit
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CN2011101765914A
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CN102256384B (en
Inventor
杜永强
尤肖虎
蒋良成
赵春明
黄檗
缪开济
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Jiangsu Dong Da Communication Skill Co Ltd
Southeast University
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Jiangsu Dong Da Communication Skill Co Ltd
Southeast University
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Priority to CN201110176591.4A priority Critical patent/CN102256384B/en
Publication of CN102256384A publication Critical patent/CN102256384A/en
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Publication of CN102256384B publication Critical patent/CN102256384B/en
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Abstract

The invention discloses a system configurable radio frequency remote device which comprises a digital optical transmission interface, a programmable logic processing unit, a remote operation/maintenance control unit, a system reconfigurable storage unit and one or more than one broadband radio frequency front-end module, wherein the remote operation/maintenance control unit receives system reconfigurable information from the digital optical transmission interface and temporarily stores the system reconfigurable information in the system reconfigurable storage unit, starts new system configuration information stored in the system reconfigurable information in time according to a remote updating command, so that the programmable logic processing unit operates according to the updated logic, and the upgrading and updating of the system are realized. According to the invention, the upgrading and updating cost and the construction period of the system can be greatly reduced.

Description

The configurable radio frequency extension apparatus of a kind of system
Technical field
The present invention relates to the radio communication neighborhood, be specifically related to the less radio-frequency extension apparatus of mobile communication base station.
Background technology
Mobile communication system mainly is made up of portable terminal, base station sub-system, switching subsystem, and Modern Mobile Communications Systems adopts distributed base station more, the base station is divided into less radio-frequency extension apparatus (RRU) and indoor baseband processing unit (BBU) by its function of finishing, RRU can install configuration away from BBU, and a BBU can dispose a plurality of RRU.Such structure, make base station configuration more flexible, install more conveniently, with respect to centralized base station, systematic function is greatly enhanced.
The mobile communication system of operation comprises GSM, CDMA, WCDMA, TD-SCDMA, CDMA2000 etc. all over the world at present, and the signal bandwidth of its use does not wait to several MHz from hundreds of kHz yet.Up-to-date mobile communication system LTE has also begun the construction of try net, and its maximum signal bandwidth is 20MHz.In order to satisfy the various demand parameters of IMT-Advanced, 3GPP proposes carrier aggregation technology at LTE-A, and the signal bandwidth maximum after its polymerization is increased to 100MHz.The frequency of these mobile communication system has covered the 800MHz-3.6GHz frequency range.According to experience in the past, to the another one system, RRU almost needs update all from a system upgrade.
Radio frequency extension apparatus (RRU) directly determines user's access and system to cover, because quantity is many, installs and disperses, and be an engineering that investment is huge and very consuming time to the operator, the cost that system update is regenerated is extremely expensive.Therefore be badly in need of the reconfigurable radio frequency extension apparatus of a kind of system (RRU), the life cycle that prolongs RRU reduces the hardware device investment of system upgrade.
Existing radio frequency extension apparatus (RRU) does not have the reconfigurable characteristic of communication system at particular communications system demand specialized designs, can not reconfigure use by interdepartmental system.
Summary of the invention
Technical problem: the radio frequency extension apparatus that provides a kind of system reconfigurable is provided the object of the invention, can change its mode of operation by its operation logic of remote maintenance software arrangements, to adapt to the mobile communication system of different systems, can solve the mobile communication system update and cause hardware device to discard problem, reduce cost and construction period that system upgrade is regenerated greatly.
Technical scheme: for realizing above-mentioned target, the present invention adopts following technical scheme (" system " described in this programme is meant the communication system that this RRU is suitable for, for example communication systems such as GSM, CDMA, WCDMA, TD-SCDMA or CDMA2000):
The reconfigurable radio frequency remote equipment RRU of a kind of system comprises: digital light coffret, FPGA (Field Programmable Gate Array) processing unit, long-range operation/safeguard control unit, the reconfigurable memory cell of system, power supply and one or more broadband rf front end module;
Described digital light coffret, the descending digital baseband signal that is used to receive BBU is sent to the FPGA (Field Programmable Gate Array) processing unit, sends upstream digital baseband signal from the FPGA (Field Programmable Gate Array) processing unit to BBU;
Described digital light coffret, also be used to receive control information to RRU, and the code information of reshuffling that receiving system is upgraded upgrading is sent to long-range operation/safeguard control unit, transmits long-range operation/safeguard that operation/maintenance of state information of the RRU that preserves in the control unit management is to BBU simultaneously;
Described FPGA (Field Programmable Gate Array) processing unit is used for logic according to system's reconfigurable memory cell regulation and receives upward signal from the broadband rf front end module, carries out Signal Pretreatment after be sent to the digital light coffret after the format conversion;
Described FPGA (Field Programmable Gate Array) processing unit, also be used for receiving, resolve downstream signal from the digital light coffret according to the logic of the reconfigurable memory cell regulation of system, after format conversion, parsing, carry out preliminary treatment, preliminary treatment includes but not limited to digital pre-distortion, filtering etc., is sent to a selected broadband rf front end module then to launch;
Described long-range operation/safeguard control unit, be used for management and the reconfigurable memory cell of control system, reception is from the reconfigurable information of the system of digital light coffret, it is temporary to reconfigurable memory cell, according to remote update order from the digital light coffret, in time be enabled in the new system configuration information of reconfigurable cell stores, make the FPGA (Field Programmable Gate Array) processing unit carry out the logic of new regulation, realize that system upgrade upgrades;
Described long-range operation/safeguard control unit also is used to manage and control the working status parameter of whole RRU, includes but not limited to transmitting power, received signal intensity, device temperature etc.;
Described broadband rf front end module is used to receive upward signal and transmitting downstream signal, and covers various mobile communication system working frequency range, and it comprises:
A duplexer that is used for time division duplex (TDD) system is used for sending the upward signal from antenna to up wideband low noise amplifier LNA, and, will send antenna to from the signal of downstream broadband power amplifier PA output;
Up wideband low noise amplifier LNA is used to receive upward signal, send tunable optic filter after amplifying;
Tunable optic filter is used to receive the output signal of up LNA, carries out being sent to the uplink orthogonal demodulator after the filtering;
The uplink orthogonal demodulator is used to receive the output signal of tunable optic filter, receives local oscillation signal simultaneously, and according to local frequency demodulation to received signal, output orthogonal two-way analog baseband signal is sent to base band programmable filter amplifier;
Base band programmable filter amplifier is used to receive the output signal of uplink orthogonal demodulator, and filtering is sent to analog to digital converter ADC after amplifying;
Analog to digital converter ADC is used to receive the output signal from base band programmable filter amplifier, send the FPGA (Field Programmable Gate Array) processing unit after analog-to-digital conversion;
Digital to analog converter DAC is used to receive the downlink digital signal from the FPGA (Field Programmable Gate Array) processing unit, sends into base band programmable filter amplifier after digital-to-analogue conversion;
Base band programmable filter amplifier is used to receive the output signal of DAC, and filtering is sent to descending quadrature modulator after amplifying;
Descending quadrature modulator, be used to receive the output signal of base band programmable filter amplifier, receive descending local oscillation signal simultaneously, in quadrature modulator, the downgoing baseband digital signal is modulated onto on the local frequency, and the output downlink radio-frequency signal is to downstream broadband power amplifier PA;
Downlink power amplifier PA is used to receive the output radiofrequency signal of descending quadrature modulator, sends duplexer to after amplifying;
Described broadband rf front end module also comprises the radio frequency control interface, is used to receive the required control information of reception, emission control of feedback broadband rf front end, includes but not limited to power output, local frequency, gain controlling etc.
Described power supply is used to RRU to provide work required electric energy.
Beneficial effect: the invention provides the reconfigurable radio frequency extension apparatus of a kind of system, change its mode of operation, can adapt to the mobile communication system of different systems, thereby reduce greatly cost and construction period that system upgrade is regenerated by software arrangements.
Description of drawings
Fig. 1 is the reconfigurable radio frequency extension apparatus composition frame chart of the system of the embodiment of the invention.
Fig. 2 is the composition frame chart of the broadband rf front end module of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described in detail.
The composition frame chart of Fig. 1 for realizing that the present invention adopts, its basic thought is to adopt broadband rf front end module 11, cover the possible working frequency range of mobile communication, utilize the reconfigurable characteristic of FPGA (Field Programmable Gate Array) processing unit 12, upgrade configurable information by moving/safeguard control unit 14 by the system upgrade that light digital transmission interface 13 receives far-end, and these system upgrade message codes are stored into configurable memory cell 15, automatically finish system update after far-end is unified update command receiving, thereby realize the reconfigurable function of radio frequency extension apparatus system.
The embodiment of the invention as shown in Figure 1, it comprises: digital light coffret 13, FPGA (Field Programmable Gate Array) processing unit 12, long-range operation/safeguard control unit 14, the reconfigurable memory cell 15 of system, at least one broadband rf front end module 11, power supply 16.
Digital light coffret 13 among present embodiment Fig. 1 is by the plug-in optical transmission of RocketIO (AFCT-57D5ATPZ) the module formation of FGPA (Xilinx V-6 series).The digital light coffret can be realized the full duplex Digital Transmission up to 8.5Gbps, the transmittability of its uplink and downlink digital baseband signal is except that the requirement of satisfying LTE-A carrier aggregation 100MHz signal bandwidth, also be used to receive control information to RRU, and the code information of reshuffling that receiving system is upgraded upgrading is sent to long-range operation/safeguard control unit, transmits long-range operation/safeguard that operation/maintenance of state information of the RRU that preserves in the control unit management is to BBU simultaneously;
FPGA (Field Programmable Gate Array) processing unit 12 among present embodiment Fig. 1, by FGPA (for example: Xilinx V-6 series) realize, be used for logic according to system's reconfigurable memory cell regulation and receive upward signal from the broadband rf front end module, after carrying out preliminary treatment, after format conversion, be sent to the digital light coffret; While FPGA (Field Programmable Gate Array) processing unit 12, also be used for receiving, resolve downstream signal from the digital light coffret according to the logic of the reconfigurable memory cell regulation of system, after format conversion, parsing, carry out preliminary treatment, preliminary treatment includes but not limited to digital pre-distortion, filtering moulding etc., is sent to a selected broadband rf front end module 11 then;
Long-range operation among present embodiment Fig. 1/safeguard control unit 14, use microprocessor (for example: PowerPC) realize, be used for management and the reconfigurable memory cell 15 of control system, reception is from the reconfigurable information of the system of digital light coffret 13, it is temporary to reconfigurable memory cell 15, according to remote update order from digital light coffret 13, in time be enabled in the new system configuration information of reconfigurable memory cell 15 storages, make FPGA (Field Programmable Gate Array) processing unit 12 carry out the logic of new regulation, realize that system upgrade upgrades;
Long-range operation/safeguard that control unit 14 also is used to manage and control the working status parameter of whole RRU includes but not limited to transmitting power, received signal intensity, device temperature etc.;
Broadband rf front end module 11 among present embodiment Fig. 1 as shown in Figure 2, it comprises: duplexer 1101, wideband low noise amplifier 1102, tunable optic filter 1103, uplink orthogonal demodulator 1104, local oscillator 1105, base band programmable filter amplifier 1106, analog to digital converter 1107; Digital to analog converter 1108, descending quadrature modulator 1109, downstream broadband power amplifier 1110, radio frequency control interface 1111.
Wideband low noise amplifier 1102 in the present embodiment broadband rf front end module 11 shown in Figure 1 is selected ADL5523 for use, tunable optic filter 1103 needs particular design, uplink orthogonal demodulator 1104 is selected ADL5380 for use, local oscillator 1105 is selected ADF4350 for use, base band programmable filter amplifier 1106 is selected ADRF6510 for use, analog to digital converter 1107 is selected AD9268 for use, digital to analog converter 1108 is selected DAC3484 for use, descending quadrature modulator 1109 is selected ADL5373 for use, downstream broadband power amplifier 1110 is selected DEPA50-4000/5 for use, and radio frequency control interface 1111 selects for use the CPLD of Xilinx to realize.
The broadband rf front end module 11 that present embodiment is shown in Figure 1, its operating frequency range are 400MHZ-4GHz, all cover the working frequency range of existing mobile communication system, also cover the working frequency range of LTE and LTE-A simultaneously.
Power supply 16 provides work required whole electric energy for the embodiment of the invention, uses routine techniques to realize.
How the radio frequency extension apparatus RRU that illustrates present embodiment below realizes being updated to the TDD-LTE system from the gsm system upgrading.As shown in Figure 1, logical code in the reconfigurable memory cell 15 of present embodiment makes 12 works at present of FPGA (Field Programmable Gate Array) processing unit in the gsm system pattern, FPGA (Field Programmable Gate Array) processing unit 12 and move/safeguard control unit control broadband rf front end 11 and also work in the GSM pattern, for example be provided with tunable optic filter 1103 be tuned to the 800MHz-900MHz frequency range, base band programmable filter amplifier 1106 arrowband work etc.When the RRU upgrading of work at present being updated to the TDD-LTE system pattern, upgrade configurable information by moving/safeguard control unit 14 by the system upgrade that light digital transmission interface 13 receives far-end, and these system upgrade message codes are stored into configurable memory cell 15, finish system update receiving to start after far-end is unified update command, after finishing system update, logical code in the reconfigurable memory cell 15 makes FPGA (Field Programmable Gate Array) processing unit 12 work in the TDD-LTE system pattern, FPGA (Field Programmable Gate Array) processing unit 12 and move/safeguard control unit control broadband rf front end 11 and also work in the TDD-LTE pattern, for example be provided with tunable optic filter 1103 be tuned to frequency range 3.4-3.6GHz, base band programmable filter amplifier 1106 wideband operation etc.Thereby with RRU by the GSM mode switch to the TDD-LTE mode of operation, realize the reconfigurable function of radio frequency extension apparatus system.
As can be seen from the above embodiments, adopt the reconfigurable radio frequency extension apparatus of system of the present invention, can dispose logical code in its reconfigurable memory cell 15 by remote control software, thereby change the mode of operation of RRU, adapting to the mobile communication system of different systems, thereby reduce greatly cost and the construction period that system upgrade upgrades.

Claims (7)

1. reconfigurable radio frequency extension apparatus of system is characterized in that the reconfigurable radio frequency extension apparatus RRU of native system comprises: digital light coffret, FPGA (Field Programmable Gate Array) processing unit, long-range operation/safeguard control unit, reconfigurable memory cell, power supply and at least one broadband rf front end module;
Described digital light coffret is used to receive the descending digital baseband signal from baseband processing unit BBU, and this signal is delivered to the FPGA (Field Programmable Gate Array) processing unit; The FPGA (Field Programmable Gate Array) processing unit receives, resolves descending digital baseband signal according to the logic of the reconfigurable memory cell regulation of system; Being sent to selected broadband rf front end module then launches;
Described broadband rf front end module is used to receive the upward signal from antenna, and upward signal is converted to digital baseband signal, delivers to the FPGA (Field Programmable Gate Array) processing unit; The FPGA (Field Programmable Gate Array) processing unit receives upward signal according to the logic of the reconfigurable memory cell regulation of system, then upward signal is carried out format conversion, delivers to the digital light coffret at last;
Described long-range operation/safeguard control unit receives from the reconfigurable information of the system of digital light coffret, and this information temporary storage is arrived reconfigurable memory cell; Simultaneously, long-range operation/safeguard control unit according to the remote update order from the digital light coffret in time starts the up-to-date system configuration information that is stored in reconfigurable memory cell;
Described power supply is used to this RUU to provide work required energy.
2. the reconfigurable radio frequency extension apparatus of the system as claimed in claim 1 is characterized in that, described long-range operation/safeguard control unit management and control the working status parameter of this RRU, and these parameters comprise transmitting power, received signal intensity and device temperature.
3. the reconfigurable radio frequency extension apparatus of the system as claimed in claim 1 is characterized in that, described at least one broadband rf front end module has covered the working frequency range of various mobile communication system; The formation of broadband rf front end module comprises:
A duplexer that is used for the TDD system is used for sending the upward signal from antenna to up wideband low noise amplifier LNA, and, will send antenna to from the signal of downstream broadband power amplifier PA output;
Up wideband low noise amplifier LNA is used to receive upward signal, send tunable optic filter after amplifying;
Tunable optic filter is used to receive the output signal of up LNA, carries out being sent to the uplink orthogonal demodulator after the filtering;
The uplink orthogonal demodulator is used to receive the output signal of tunable optic filter, receives local oscillation signal simultaneously, and according to local frequency demodulation to received signal, output orthogonal two-way analog baseband signal is sent to base band programmable filter amplifier;
Base band programmable filter amplifier is used to receive the output signal of uplink orthogonal demodulator, and filtering is sent to analog to digital converter ADC after amplifying;
Analog to digital converter ADC is used to receive the output signal from base band programmable filter amplifier, send the FPGA (Field Programmable Gate Array) processing unit after analog-to-digital conversion;
Digital to analog converter DAC is used to receive the downlink digital signal from the FPGA (Field Programmable Gate Array) processing unit, sends into base band programmable filter amplifier after digital-to-analogue conversion;
Base band programmable filter amplifier is used to receive the output signal of DAC, and filtering is sent to descending quadrature modulator after amplifying;
Descending quadrature modulator, be used to receive the output signal of base band programmable filter amplifier, receive descending local oscillation signal simultaneously, in quadrature modulator, the downgoing baseband digital signal is modulated onto on the local frequency, and the output downlink radio-frequency signal is to downstream broadband power amplifier PA;
Downlink power amplifier PA is used to receive the output radiofrequency signal of descending quadrature modulator, sends duplexer to after amplifying.
4. the reconfigurable radio frequency extension apparatus of system as claimed in claim 3 is characterized in that described broadband rf front end module also comprises the radio frequency control interface, is used to feed back the required control information of reception, emission control of broadband rf front end; These control informations comprise power output, local frequency and gain controlling.
5. the reconfigurable radio frequency extension apparatus of the system as claimed in claim 1 is characterized in that described FPGA (Field Programmable Gate Array) processing unit resolves earlier descending digital baseband signal, carries out preliminary treatment again; The described FPGA (Field Programmable Gate Array) processing unit of stating carries out preliminary treatment earlier to upward signal, carries out format conversion again;
Described preliminary treatment comprises digital pre-distortion and filtering.
6. the reconfigurable radio frequency extension apparatus of the system as claimed in claim 1, the code of corresponding different communication system that it is characterized in that the reconfigurable cell stores of described system, these different codes have been stipulated the logic behavior of different FPGA (Field Programmable Gate Array) processing units, are used for corresponding corresponding communication system.
7. the reconfigurable radio frequency extension apparatus of the system as claimed in claim 1 is characterized in that selected broadband rf front end module of launching, and is selected according to the requirement of multiple-input and multiple-output mimo system.
CN201110176591.4A 2011-06-28 2011-06-28 System configurable radio frequency remote device Expired - Fee Related CN102256384B (en)

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CN103166654A (en) * 2011-12-14 2013-06-19 美国频顺通讯科技公司 Wideband RF front-end
CN102625340A (en) * 2012-03-15 2012-08-01 中兴通讯股份有限公司 Software acquiring method and system for radio remote unit (RRU)
CN103687088B (en) * 2012-09-03 2018-09-11 南京中兴软件有限责任公司 A kind of mthods, systems and devices that Remote Radio Unit automatically configures
CN103687088A (en) * 2012-09-03 2014-03-26 中兴通讯股份有限公司 Automatic configuring method, system and device for RRU (Remote Radio Unit)
US9787460B2 (en) 2015-07-16 2017-10-10 LGS Innovations LLC Self-interference channel estimation system and method
US9660674B2 (en) 2015-07-16 2017-05-23 LGS Innovations LLC Self-interference cancellation antenna systems and methods
US10594469B2 (en) 2015-07-16 2020-03-17 LGS Innovations LLC Secure radio methods and apparatus
US9647705B2 (en) 2015-07-16 2017-05-09 LGS Innovations LLC Digital self-interference residual cancellation
US10090989B2 (en) 2015-07-16 2018-10-02 LGS Innovations LLC Software defined radio front end
US9564932B1 (en) 2015-07-16 2017-02-07 LGS Innovations LLC Software defined radio front end
US10164756B2 (en) 2015-07-16 2018-12-25 LGS Innovations LLC Self-interference cancellation antenna systems and methods
US10574428B2 (en) 2015-07-16 2020-02-25 LGS Innovations LLC Self-interference channel estimation system and method
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CN108833017A (en) * 2018-07-03 2018-11-16 京信通信系统(中国)有限公司 Single system direct discharging station and its signal compatibility method, apparatus
CN110855301A (en) * 2019-11-19 2020-02-28 山东省计算中心(国家超级计算济南中心) Half-duplex multi-band antenna control system and method for terminal of Internet of things
CN111815927A (en) * 2020-06-01 2020-10-23 中天通信技术有限公司 Signal transmission system and signal transmission method
CN111917429A (en) * 2020-07-24 2020-11-10 锐石创芯(深圳)科技有限公司 Radio frequency front end architecture, antenna device and communication terminal
CN113225095A (en) * 2020-07-24 2021-08-06 锐石创芯(深圳)科技有限公司 Radio frequency front end architecture, antenna device and communication terminal
WO2022017404A1 (en) * 2020-07-24 2022-01-27 锐石创芯(深圳)科技有限公司 Radio-frequency front-end architecture, antenna apparatus and communication terminal
CN113225095B (en) * 2020-07-24 2023-02-28 锐石创芯(深圳)科技股份有限公司 Radio frequency front end architecture, antenna device and communication terminal
CN114584164A (en) * 2022-01-25 2022-06-03 北京邮电大学 Frequency band reconfigurable radio frequency receiver front end facing multi-standard communication

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