CN105979545A - LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization - Google Patents
LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization Download PDFInfo
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- CN105979545A CN105979545A CN201610397192.3A CN201610397192A CN105979545A CN 105979545 A CN105979545 A CN 105979545A CN 201610397192 A CN201610397192 A CN 201610397192A CN 105979545 A CN105979545 A CN 105979545A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses an LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization The LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization has big throughout and good instantaneity for operation processing like reception and detection of CA and eMIMO signals in a 8 channel, digital demodulation, decoding, analysis and transmission, and base band parallel processing and provides an integrated test device applicable to an LTD-Advance baseband, a physic layer, a physical layer and a high level protocol stack index test. The carrier wave polymerization LTE-Advanced air interface technology analysis device belongs to a desk type portable device, and is clear in design principle, reasonable in structure, easy to expand and low in cost. The LTE-Advanced air interface technology analysis device has following characteristics: 1 an independent 8 channel radio frequency design supports a CA test and an eMIMO test; 2 parallel 8 channel baseband performs synchronization processing and supports real-time demodulation of the physical layer; and 3 an embedded type FPGA + DSP + ARM architecture solves a high throughout parallel test. Through above arrangement, a 8 channel carrier wave polymerization LTE-Advanced air interface test demand is realized. Besides, the LTE-Advanced air interface technology analysis device can maximally support an air interface 8 antenna 5 carrier wave polymerization analysis real time processing, and is high in testing efficiency.
Description
Technical field
The present invention relates to a kind of eat dishes without rice or wine technical Analysis device based on 8 channel carriers polymerization LTE-Advanced.
Background technology
In today of mobile Internet high speed development, intelligent terminal's volume of holding is skyrocketed through, and drives global data flow significantly
Lifting.People wish wirelessly to transmit more data content day by day, the most higher-quality video content.Rely on
The transfer rate providing 10 times of 3G, LTE-Advanced can provide the user reliably wireless network and experience.Network is transported
Battalion business is for competitive pressure, the reduction factor such as network carrying pressure and cost driving, one after another to LTE-Advanced evolution.According to
The report of international mobile equipment association of business suppliers (Global Suppliers Associaion, GSA), by July, 2015
Having more than 143 countries and deploy 422 commercial LTE network, wherein 88 Ge Jia operators are proposed in 45 countries
LTE-Advanced commercial network, it is contemplated that 2015 the end of the year whole world LTE user reach 1,000,000,000.Compared with other technologies, mobile communication
Replacement characteristic become apparent from, the most every ten years research and development a generation, then 10 years dispose operation a generation, research and develop the next generation simultaneously.From
Since nineteen sixty-eight AT&T Labs's proposition cell mobile communication systems concept, mobile communication has gone through the differentiation of four generation systems,
It is currently under three generations and four mixed operation stages in generation, and the 5th generation system the most toward the future strides forward.
Although all standards and norms of 3G are the most frozen and acquisition is passed through at present, but 3G system still suffers from a lot of deficiency, as adopted
By circuit switching rather than pure IP mode；Peak transfer rate does not reaches 2Mbps, it is impossible to meet user's high bandwidth requirement；Many
The standard of kind is difficult to global roaming etc..Limitation just because of 3G has promoted people to next generation mobile communication system
The research of 4G and expectation.Forth generation mobile communication system can be referred to as broadband access and distributed network, and its network structure will
Full IP mode is used to build.4G network uses many key technologies of eating dishes without rice or wine to support, including: orthogonal frequency division multiplexed technology
(Orthogonal Frequency Division Multiplexing, OFDM), carrier aggregation (Carrier Aggregation, CA)
Technology, adaptive modulation and coding technology (Adaptive Modulation and Coding, AMC), enhancing Multiinputoutput
(enhanced Multiple-Input Multiple-Output, eMIMO) technology, eICIC (enhanced Inter-Cell
Interference Coordination) and intelligent antenna technology, IP-based core network technology, software and radio technique and net
Network optimizes and safety etc..It addition, in order to keep compatibility with legacy network, the amalgamation of heterogeneous network to need utilizing multiple
Gateway sets up internetworking, so 4G will be a complex network supporting multi-protocols.
LTE-Advanced wireless communication system, owing to needing to support bigger bandwidth and higher user moving speed, Quan Mianzhi
Hold Packet data service, shorter propagation delay time etc., and multiple cell dynamically manages, CA, eICIC, UL-MIMO (Up Link
MIMO) new technique such as multi-antenna transmission introduces so that the baseband signal test of LTE-Advanced is more complicated and difficult.
At present, the LTE that 3GPP works out has become as the wideband wireless mobile communication standard of whole world main flow.LTE-Advanced is i.e.
LTE R10 standard is the 1Gbit/s peaks demand for meeting ITU (International Telecommunications Union)
4G technology.And LTE up-to-date technological evolvement R13 version 4.5G technology, also it is commercialization up-to-date before 5G technology
Change mobile communication technology.Eat dishes without rice or wine in key technology LTE-Advanced is numerous, especially CA technology (3 carrier wave/5 carrier wave)
The operand that application with eMIMO technology (8 antenna) causes information data to process is doubled and redoubled, in the urgent need to supporting 8 antennas
The Digital Signal Processing of 5 carrier waves meet simultaneously in real time physical layer, higher-layer protocols detected, demodulate, decode, analysis etc..
Summary of the invention
It is an object of the invention to propose a kind of eating dishes without rice or wine technical Analysis device, with soon based on 8 channel carriers polymerization LTE-Advanced
Speed realizes the multi-carrier polymerizing to LTE-Advanced uplink/downlink signal and the test of 8 passages enhancing MIMO index.
To achieve these goals, the present invention adopts the following technical scheme that
Eat dishes without rice or wine technical Analysis device, including the antenna array that 8 polarised directions are different based on 8 channel carriers polymerization LTE-Advanced
Row, 8 radio-frequency channels, tunnel, 8 A/D, 2 FPGA, 2 DSP and 2 ARM；Wherein, each aerial array
A corresponding radio-frequency channel, road；Port that every radio-frequency channel, road is inputted by radio frequency, 60dB input attenuator, first order bandpass filtering
Device, radio frequency low-noise preamplifier, RF mixer and second level band filter are constituted；Wherein, the port of radio frequency input
For connecting aerial array；Base station downlink signal enters with 8 road local oscillation signals through 8 radio-frequency channels, tunnel respectively with terminal uplink signal
The lower mixing of row forms the analog if signal on 8 tunnels, and the analog if signal on 8 tunnels is formed in the numeral on 8 tunnels after A/D converts
Frequently signal, the digital medium-frequency signal on 8 tunnels divides two groups of every 4 tunnels to give 1 FPGA process, thus forms two group of 8 tunnel sample rate
For the base band LTE signal of 30.72Msps, base band LTE signal is transferred to DSP and carries out physical layer demapping, demodulates, decodes
Form original bit data stream, be transmitted further to ARM and carry out the pretreatment of higher-layer protocols index test.
Present invention have the advantage that
The present invention by CA Yu the eMIMO signal of 8 passages receive with detection, digital demodulation, decode, analyze and transmit,
The big handling capacity of base band concurrent operation process etc. and Real-time Design, it is provided that one is applicable to LTE-Advanced base band, physics
Layer, the integrated test set of higher-layer protocols index test, this device belongs to table portable device, and design principle is clear, structure is closed
Reason, be prone to extension, with low cost.Apparatus of the present invention mainly have following several respects feature: 1, independent 8 channel radio frequency design,
Hold CA Yu eMIMO test；2, parallel 8 channel baseband synchronization process, support physical layer Real-time demodulation；3, embedded
FPGA+DSP+ARM framework solves high-throughput concurrent testing.It is beneficial to realize 8 channel carriers by above-mentioned design be polymerized
LTE-Advanced eats dishes without rice or wine testing requirement；Additionally, the highest support of apparatus of the present invention eats dishes without rice or wine 8 antenna 5 carrier aggregation parsings in real time
Processing, relative to other testing schemes, software control flow is simple, and testing efficiency is high.
Accompanying drawing explanation
Fig. 1 is to eat dishes without rice or wine the block architecture diagram of technical Analysis device based on 8 channel carriers polymerization LTE-Advanced in the present invention；
Fig. 2 is 8 channel carrier polymerizations and the architecture principle block diagram strengthening MIMO embedded processing in the present invention；
Fig. 3 is base band in the present invention, physical layer, the theory diagram of higher-layer protocols processing module；
Fig. 4 is the LTE-Advanced power test theory diagram realized based on FPGA in the present invention；
Fig. 5 is the LTE-Advanced frequency test theory diagram realized based on FPGA in the present invention；
Fig. 6 is the LTE-Advanced modulation domain test philosophy block diagram realized based on FPGA and DSP in the present invention；
Fig. 7 is that the LTE-Advanced physical layer realized based on DSP in the present invention resolves test philosophy block diagram；
Fig. 8 is to eat dishes without rice or wine the software flow pattern of technical Analysis based on 8 channel carriers polymerization LTE-Advanced in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the present invention is described in further detail by detailed description of the invention:
Eat dishes without rice or wine technical Analysis device based on 8 channel carriers polymerization LTE-Advanced, including independent 8 channel radio frequency channel modules,
Independent 8 railway digital ifd modules, parallel 8 antenna baseband processing modules, physical channel processing module, higher-layer protocols processing module,
Independent 8 tunnel local oscillator modules, main control module, display module and switch power module etc..
The present invention is based on Software Radio Theory, Digital Signal Processing and embedded development technology, by the collection of above-mentioned module
Become, it is possible to achieve signal of eating dishes without rice or wine CA Yu eMIMO receives, transmits, detects, demodulates, decodes, analysis etc..
The design principle of above-mentioned modules is illustrated below in conjunction with Fig. 1 to Fig. 3.
1, the design principle of independent 8 channel radio frequency channel modules is as follows:
Independent 8 channel radio frequency channel modules have the port of 8 radio frequency inputs, such as port RF1～RF8, are respectively used to connect
The aerial array that 8 polarised directions are different, the corresponding radio-frequency channel, road of each road aerial array.
Every radio-frequency channel, road by 60dB input attenuator, first order band filter, radio frequency low-noise preamplifier, penetrate
Frequency mixer and second level band filter are constituted, it is possible to achieve LTE-Advanced radio-frequency carrier signal is by the high frequency of air interface
Section is changed into the low-frequency range carrier signal of 153.6MHz, have simultaneously broadband input range and high power input dynamic range with
And the highly sensitive function of faint small-signal can be identified, provide pure modulated intermediate frequency signal for independent 8 railway digital ifd modules.
2, independent 8 railway digital ifd modules are as follows with parallel 8 antenna baseband processing module design principles:
The corresponding road intermediate-frequency channel in radio-frequency channel, each road, 8 tunnel radiofrequency signals are transferred to A/D converter after lower mixing.Its
In, 4 road A/D converters are one group, and this group LTE-Advanced modulated signal is transferred to a piece of FPGA and is responsible for realizing 4 tunnels
The Digital Down Convert (DDC) of parallel signal, multiphase filtering, digital decimation, digital filtering, FFT, LTE synchronous detecting, Serdes
Interface etc., it is achieved the IQ quadrature demodulation of digital modulation signals, rate-matched, time-frequency domain conversation, time slot signal power trigger, frame
Head location positioning, 4 antenna base band data high-speed transfer etc..8 A/D and 2 FPGA form 8 antenna baseband processing units
Physical layer process offer for rear end dsp chip has the baseband signal of frame synchronization.
3, the design principle of physical channel processing module is as follows:
Previous stage 8 antenna base band data flow point two groups, transfers to the collaborative process of 2 DSP simultaneously, and this chip is responsible for realization
The physical layer modulation of LTE-Advanced baseband signal and decoding, MIMO signal detection resolve with demodulation, parallel processing 4 antenna
Carrier aggregation process, Serdes interface etc., it is achieved the TS36.212/213 function of 3GPP R10/11/12/13 agreement, multiple antennas
MIMO resolves and multicarrier standalone feature, and bit data stream PDU (Protocol Data Unit) after decoding is transferred to rear end
ARM chip processes.
4, the design principle of higher-layer protocols processing module is as follows:
Previous stage multiple antennas physical layer decoded bit data flow point two groups, transfers to the collaborative process of 2 ARM, this chip simultaneously
Be responsible for realizing the PDU dissection process of LTE-Advanced higher-layer protocols MAC/RLC/PDCP/RRC/NAS, layer and layer it
Between business monitoring process and cross-layer association process.Wherein, MAC layer part is responsible for the convergence of multi-carrier data stream (at carrier aggregation
Reason), rlc layer/PDCP layer/rrc layer/NAS layer is each responsible for the PDU of higher-layer protocols corresponding part and resolves.
Additionally, the present invention gives the processing procedure of above-mentioned technical Analysis device of eating dishes without rice or wine:
Base station downlink signal and terminal uplink signal carry out lower mixing formation 8 with 8 road local oscillation signals respectively through 8 radio-frequency channels, tunnel
The analog if signal on road, the analog if signal on 8 tunnels forms the digital medium-frequency signal on 8 tunnels after A/D converts, 8 tunnels
Digital medium-frequency signal divides two groups of every 4 tunnels to give 1 FPGA process, thus forming two group of 8 tunnel sample rate is 30.72Msps's
Base band LTE signal, base band LTE signal is transferred to DSP by HSSI High-Speed Serial Interface and carries out physical layer demapping, demodulates, solves
Code forms original bit data stream, then is transferred to ARM process by chip internal high-speed bus.This ARM is subsidiary simultaneously
Pretreatment test item controls, and carries out the process such as display by Ethernet interface transmission message to the software of host computer CPU.
Fig. 4 to Fig. 7 respectively illustrates and utilizes apparatus of the present invention to carry out LTE-Advanced power test, frequency test, modulation domain
Test and physical layer resolve the theory diagram of test.Fig. 8 shows and eats dishes without rice or wine skill based on 8 channel carriers polymerization LTE-Advanced
The software flow pattern that art is analyzed.By above-mentioned Fig. 4 to Fig. 8 it can be seen that the Digital IF Processing of apparatus of the present invention is by high-speed a/d
Constitute with high-performance FPGA；Multichannel Base-Band Processing is completed by FPGA；Physical layer and higher-layer protocols by DSP (containing ARM
Core) complete；Software test function (includes the test of frequency test, spectrum measurement, power test, modulation domain, code domain test
Deng) pretreatment completed by ARM；Bottom control and man-machine interface, scheduling etc. are completed by host computer.
Certainly, only presently preferred embodiments of the present invention described above, the present invention is not limited to enumerate above-described embodiment, it should say
Bright, any those of ordinary skill in the art are under the teaching of this specification, and all equivalents made substitute, substantially become
Shape form, within all falling within the essential scope of this specification, ought to be protected by the present invention.
Claims (1)
1. eat dishes without rice or wine technical Analysis device based on 8 channel carriers polymerization LTE-Advanced, it is characterised in that include 8 polarization
The different aerial array in direction, 8 radio-frequency channels, tunnel, 8 A/D, 2 FPGA, 2 DSP and 2 ARM；Wherein,
The corresponding radio-frequency channel, road of each aerial array；Port that every radio-frequency channel, road is inputted by radio frequency, 60dB input attenuator,
First order band filter, radio frequency low-noise preamplifier, RF mixer and second level band filter are constituted；Wherein,
The port of radio frequency input is used for connecting aerial array；Base station downlink signal and terminal uplink signal through 8 radio-frequency channels, tunnel respectively with
8 road local oscillation signals carry out lower mixing and form the analog if signal on 8 tunnels, and the analog if signal on 8 tunnels is shape after A/D converts
Become the digital medium-frequency signal on 8 tunnels, the digital medium-frequency signal on 8 tunnels to divide two groups of every 4 tunnels to give 1 FPGA process, thus formed
Two group of 8 tunnel sample rate is the base band LTE signal of 30.72Msps, and base band LTE signal is transferred to DSP to carry out physical layer solution and reflect
Penetrate, demodulate, decode the original bit data stream of formation, be transmitted further to ARM and carry out the pretreatment of higher-layer protocols index test.
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| CN106970893A (en) * | 2017-04-19 | 2017-07-21 | 惠州Tcl移动通信有限公司 | A kind of 5G hardware platform systems and its implementation based on SOC |
| CN107592145A (en) * | 2017-09-14 | 2018-01-16 | 中国电子科技集团公司第四十研究所 | A kind of the cascade realization device and method of phase shift matrix of decaying |
| CN109302721A (en) * | 2017-12-12 | 2019-02-01 | 上海创远仪器技术股份有限公司 | A kind of LTE_Advanced eats dishes without rice or wine signal analysis device |
| CN109547379A (en) * | 2018-12-13 | 2019-03-29 | 中国电子科技集团公司第四十研究所 | A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation |
| CN110351242A (en) * | 2019-05-31 | 2019-10-18 | 惠州市蓝微电子有限公司 | The means of communication, device and the electronic equipment of compatible multi-protocols |
| CN112187363A (en) * | 2020-09-18 | 2021-01-05 | 中国科学院上海光学精密机械研究所 | High-precision optical fiber time frequency transmission system and method compatible with Ethernet |
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Application publication date: 20160928 |