CN106130573B - The pilot signal method for generation of NB-IoT pilot signal generating device - Google Patents
The pilot signal method for generation of NB-IoT pilot signal generating device Download PDFInfo
- Publication number
- CN106130573B CN106130573B CN201610718873.5A CN201610718873A CN106130573B CN 106130573 B CN106130573 B CN 106130573B CN 201610718873 A CN201610718873 A CN 201610718873A CN 106130573 B CN106130573 B CN 106130573B
- Authority
- CN
- China
- Prior art keywords
- signal
- iot
- input terminal
- frequency
- pilot signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
Abstract
The present invention relates to Internet of Things fields of communication technology, and in particular to arrives NB-IoT pilot signal generating device and its pilot signal method for generation, it is characterised in that: the output end that NB-IoT pilot tone base band generates unit is connected with intermediate frequency control unit input terminal；One input terminal of the output end connection frequency mixer of intermediate frequency control unit, another input terminal of frequency mixer connects the output end of the first local oscillator unit, the output end of frequency mixer connects an input terminal of another frequency mixer, another input terminal of another frequency mixer is connected with the second local oscillator unit exports radiofrequency signal；The output end of another frequency mixer is sequentially connected controllable filter unit input terminal, gain conditioning unit input terminal, fixed gain amplifying unit input terminal, and the output end of fixed gain amplifying unit exports high-power RF signal.Compared with prior art, the present invention meeting the frequency coverage of NB-IoT signal by the multistage frequency conversion of radio-frequency channel.
Description
Technical field
The present invention relates to Internet of Things fields of communication technology, and in particular to arrives NB-IoT pilot signal generating device and its pilot tone
Signal generating method.
Background technique
Internet of Things market potential is huge, i.e., will enter extensive eruptive growth.Mass marketing day hastens towards saturation at present,
Operator is caused to get a profit increasing option, it would be highly desirable to seek new profit growth point, according to the address prediction of Mai Kenxi Deng Duojia mechanism,
Extensive eruptive growth will occur for the following 5-10 Internet of Things connection number and market scale.All things on earth interconnection has become global operation
The grand strategy direction that quotient, science-and-technology enterprise and industry alliance are actively laid out.At present Cellular Networks covering the whole world 90% population, cover
Lid is more than 50% geographical location.Based on existing cellular network, operator is capable of providing a very competitive Internet of Things
Network technology is exactly NB-IoT.NB-IoT covering, power consumption, cost, in terms of best performance, be best suitable for LPWA class
Business demand.
Test is the important ring in wireless communication industry chain, and for a long time, testing meter and instrument is to restrict China always
The bottleneck of communications industry development.In terms of test equipment, China is almost even more blank, and test equipment is substantially Keysight
Company, R/S company etc. are monopolized.NB-IoT industry is in research and development boost phase, still, during industry development, tester
Table still lags behind the development of other equipment and system, and the NB-IoT class testing instrument that can be seen on the market at present is at present very
Difficulty is seen, and equipment and system manufacturer are all the NB- for being built by a variety of instrument combines, therefore pushing the development of NB-IoT technology at present
There are also to be developed for IoT class instrument.NB-IoT (R13) standard formulation at present work has freezed, but NB-IoT to obtain business at
Function, it is also necessary to which the early stage test Solution synchronous with standard development proposes bigger challenge to measuring instrumentss.Therefore it researches and develops
Instrument occurs for a NB-IoT pilot signal very urgent out.
Summary of the invention
The purpose of the present invention is to provide a kind of NB-IoT pilot signal generating device and its pilot signal method for generation, sides
Early stage test when just being developed.
To achieve the above object, the present invention designs a kind of NB-IoT pilot signal generating device, it is characterised in that: including with
Unit is generated in the NB-IoT pilot tone base band that NB-IoT pilot signal base band generates, NB-IoT pilot tone base band generates the output of unit
It holds and is connected with the intermediate frequency control unit input terminal for interpolation frequency conversion, digital-to-analogue conversion；The output end connection of intermediate frequency control unit is mixed
One input terminal of frequency device, another input terminal of frequency mixer connect the output end of the first local oscillator unit, the output end of frequency mixer
An input terminal of another frequency mixer is connected, another input terminal of another frequency mixer is connected with the second local oscillator unit exports radio frequency
Signal；The output end of another frequency mixer is sequentially connected controllable filter unit input terminal, the gain for adjusting channel gain improves
Unit input terminal, the fixed gain amplifying unit input terminal for high-power amplification, the output end of fixed gain amplifying unit are defeated
High-power RF signal out.
The IF carrier frequency of the intermediate frequency control unit output is 35MHz, and intermediate frequency output power is -5dBm.
The first local oscillator unit is that point frequency exports, and output frequency is fixed as 435MHz, output power range is-
20dBm~0dBm.
The radio frequency output frequency of the radiofrequency signal of the second local oscillator unit output is 700MHz~2800MHz, is used for
The frequency coverage of NB-IoT pilot signal and other communication standard pilot signal transmissions, power output range be -20dBm~+
45dBm。
A kind of pilot signal method for generation of NB-IoT pilot signal generating device, it is characterised in that: master is same including narrowband
The baseband signal for walking signal NPSS, narrowband secondary synchronization signal NSSS and narrowband reference signal generates；The main synchronization in the narrowband
The baseband signal of signal NPSS, narrowband secondary synchronization signal NSSS and narrowband reference signal NRS generate including the following steps:
(1), narrowband primary synchronization signal NPSS signal generates, and narrowband primary synchronization signal is mapped in each nothing of NB-IoT carrier wave
On the 1st of the 6th subframe of line frame to the 11st subcarrier, according to 3GPP agreement, it generates formula are as follows:
(2), narrowband secondary synchronization signal NSSS signal generate, narrowband secondary synchronization signal be mapped in NB-IoT carrier wave every one
In 10th subframe of a radio frames on all 12 subcarriers of last 11 symbol, according to 3GPP agreement, it generates formula are as follows:
Wherein,N_Cell_ID is
Cell ID number；
(3), narrowband reference signal NRS signal generate, narrowband reference signal be mapped in NB-IoT carrier wave in addition to mapping
On most latter two symbol of all downlink subframes of NPSS and NSSS, initial position is antenna end slogan and NB-IoT cell ID
Number correlation generates formula are as follows:
Wherein:
nsFor timeslot number, l is symbol serial number,For NB-IoT cell id, NCPIt is 1；
(4), the IFFT transformation that the data for completing resource impact carry out at 2048 points carries out OFDM modulation, OFDM modulation
Formula are as follows:
By the modulated symbol of OFDM, in the CP that 0 intubating length of symbol of a time slot is 160 symbols, other symbols
Intubating length is the CP of 144 symbols, one or more wireless frame datas that composition chip rate is 30.72Mbs.
Compared with prior art, the present invention meeting the frequency coverage of NB-IoT signal by the multistage frequency conversion of radio-frequency channel
Range, realized by adjustable tracking filter it is high mutually make an uproar, the performance of low spurious, put using Tunable Channels gain and fixed gain
The big a wide range of covering to meet NB-IoT pilot signal requires, generation narrowband primary synchronization signal, narrowband secondary synchronization signal and
The baseband signal of narrowband reference signal meets NB-IoT terminal to the search need and terminal receiver of base station pilot signals
Calibration requirements；In the case where high-power amplification, the effective signal that improves exports quality, while frequency coverage is in addition to being used for
Outside 800MHz~1990MHz of NB-IoT, 700MHz~2800MHz is covered, provides hardware sky for other communication standards
Between.
Detailed description of the invention
Fig. 1 is the functional block diagram of the circuit of the present invention in embodiment.
Fig. 2 is the time frequency distribution map of the narrowband reference signal of NB-IoT in the present invention.
Fig. 3 is the time-domain diagram of NB-IoT pilot signal transmission in the present invention.
Fig. 4 is the frequency domain figure of NB-IoT pilot signal transmission in the present invention.
Specific embodiment
The present invention is described further now in conjunction with attached drawing.
Embodiment 1
As shown in Figure 1, a kind of NB-IoT pilot signal generating device, including what is generated for NB-IoT pilot signal base band
NB-IoT pilot tone base band generates unit, and NB-IoT pilot tone base band generates the output end of unit and is used for interpolation frequency conversion, digital-to-analogue conversion
Intermediate frequency control unit input terminal be connected；One input terminal of the output end connection frequency mixer 1 of intermediate frequency control unit, frequency mixer 1
Another input terminal connect the output end of the first local oscillator unit, the output end of frequency mixer 1 connect another frequency mixer 2 one is defeated
Enter end, another input terminal of another frequency mixer 2 is connected with the second local oscillator unit exports radiofrequency signal；Another frequency mixer 2 it is defeated
Outlet is sequentially connected controllable filter unit input terminal, the gain conditioning unit input terminal for adjusting channel gain, for big function
The output end of the fixed gain amplifying unit input terminal of rate amplification, fixed gain amplifying unit exports high-power RF signal.
Further, the IF carrier frequency of the described intermediate frequency control unit output is 35MHz, intermediate frequency output power is-
5dBm。
Further, the first local oscillator unit is that point frequency exports, and output frequency is fixed as 435MHz, output power model
It encloses for -20dBm~0dBm.
Further, the radio frequency output frequency of the radiofrequency signal of the described second local oscillator unit output be 700MHz~
2800MHz, for the frequency coverage of NB-IoT pilot signal and other communication standard pilot signal transmissions, power output range
For -20dBm~+45dBm.
Embodiment 2
This example is based on the pilot signal method for generation on the basis of generating device described in embodiment 1, it is characterised in that:
Baseband signal including narrowband primary synchronization signal NPSS, narrowband secondary synchronization signal NSSS and narrowband reference signal produces
It is raw；The baseband signal of narrowband primary synchronization signal NPSS, the narrowband secondary synchronization signal NSSS and narrowband reference signal NRS produces
It is raw including the following steps:
(1), narrowband primary synchronization signal NPSS signal generates, and narrowband primary synchronization signal is mapped in each nothing of NB-IoT carrier wave
On the 1st of the 6th subframe of line frame to the 11st subcarrier, according to 3GPP agreement, it generates formula are as follows:
(2), narrowband secondary synchronization signal NSSS signal generate, narrowband secondary synchronization signal be mapped in NB-IoT carrier wave every one
In 10th subframe of a radio frames on all 12 subcarriers of last 11 symbol, according to 3GPP agreement, it generates formula are as follows:
Wherein,N_Cell_ID is cell ID number.
(3), narrowband reference signal NRS signal generate, narrowband reference signal be mapped in NB-IoT carrier wave in addition to mapping
On most latter two symbol of all downlink subframes of NPSS and NSSS, initial position is antenna end slogan and NB-IoT cell ID
Number correlation generates formula referring to fig. 2 are as follows:
Wherein:
nsFor timeslot number, l is symbol serial number,For NB-IoT cell id, NCPIt is 1.
(4), the IFFT transformation that the data for completing resource impact carry out at 2048 points carries out OFDM modulation, OFDM modulation
Formula are as follows:
By the modulated symbol of OFDM, in the CP that 0 intubating length of symbol of a time slot is 160 symbols, other symbols
Intubating length is the CP of 144 symbols, one or more wireless frame datas that composition chip rate is 30.72Mbs.
As shown in figure 3, this figure is the time-domain diagram of NB-IoT pilot signal transmission of the present invention, centre frequency 1950MHz is swept
Retouch the time be a radio frames (10ms), test be NB-IoT subframe symbol distribution and time-domain signal power.
As shown in figure 4, this figure is the frequency domain figure of NB-IoT pilot signal transmission of the present invention, centre frequency 1950MHz,
Sweep length is 1MHz, test be NB-IoT channel width distribution.
In conclusion the present invention meets the frequency coverage of NB-IoT signal by the multistage frequency conversion of radio-frequency channel,
Realized by adjustable tracking filter it is high mutually make an uproar, the performance of low spurious, using Tunable Channels gain and fixed gain amplify come
The a wide range of covering requirement for meeting NB-IoT pilot signal, generates narrowband primary synchronization signal, narrowband secondary synchronization signal and narrowband
The baseband signal of reference signal meets NB-IoT terminal to the search need of base station pilot signals and the school of terminal receiver
Quasi need.For the present invention in the case where high-power amplification, the effective signal that improves exports quality, while frequency coverage is logical for other
Letter standard provides hardware space.
Claims (4)
1. a kind of pilot signal method for generation of NB-IoT pilot signal generating device, it is characterised in that: the NB-IoT pilot tone
Signal generation apparatus includes that the NB-IoT pilot tone base band generated for NB-IoT pilot signal base band generates unit, NB-IoT pilot tone
Base band generates the output end of unit and the intermediate frequency control unit input terminal for interpolation frequency conversion, digital-to-analogue conversion is connected；Intermediate frequency control
Another input terminal of one input terminal of output end connection frequency mixer (1) of unit, frequency mixer (1) connects the first local oscillator unit
Output end, the output end of frequency mixer (1) connects an input terminal of another frequency mixer (2), another frequency mixer (2) another
Input terminal is connected with the second local oscillator unit exports radiofrequency signal；It is single that the output end of another frequency mixer (2) is sequentially connected controllable filtering
First input terminal, the gain conditioning unit input terminal for adjusting channel gain, the fixed gain amplification list for high-power amplification
The output end of first input terminal, fixed gain amplifying unit exports high-power RF signal；
Pilot signal method for generation includes narrowband primary synchronization signal NPSS, narrowband secondary synchronization signal NSSS and narrowband reference signal
Baseband signal generate；Narrowband primary synchronization signal NPSS, narrowband secondary synchronization signal NSSS and the narrowband reference signal NRS
Baseband signal generate including the following steps:
(1), narrowband primary synchronization signal NPSS signal generates, and narrowband primary synchronization signal is mapped in each radio frames of NB-IoT carrier wave
On the 1st of 6th subframe to the 11st subcarrier, according to 3GPP agreement, it generates formula are as follows:
(2), narrowband secondary synchronization signal NSSS signal generate, narrowband secondary synchronization signal be mapped in NB-IoT carrier wave every a nothing
In 10th subframe of line frame on all 12 subcarriers of last 11 symbol, according to 3GPP agreement, it generates formula are as follows:
Wherein, For cell ID number；
(3), narrowband reference signal NRS signal generate, narrowband reference signal be mapped in NB-IoT carrier wave in addition to mapping NPSS and
On most latter two symbol of all downlink subframes of NSSS, initial position is antenna end slogan and NB-IoT cell ID number phase
It closes, generates formula are as follows:
Wherein:
nsFor timeslot number, l is symbol serial number, NCPIt is 1；
(4), the IFFT transformation that the data for completing resource impact carry out at 2048 points carries out OFDM modulation, the formula of OFDM modulation
Are as follows:
By the modulated symbol of OFDM, in the CP that 0 intubating length of symbol of a time slot is 160 symbols, the insertion of other symbols
Length is the CP of 144 symbols, one or more wireless frame datas that composition chip rate is 30.72Mbs.
2. a kind of pilot signal method for generation of NB-IoT pilot signal generating device according to claim 1, feature
Be: the IF carrier frequency of the intermediate frequency control unit output is 35MHz, and intermediate frequency output power is -5dBm.
3. a kind of pilot signal method for generation of NB-IoT pilot signal generating device according to claim 1, feature
Be: the first local oscillator unit exports for point frequency, and output frequency is fixed as 435MHz, output power range be -20dBm~
0dBm。
4. a kind of pilot signal method for generation of NB-IoT pilot signal generating device according to claim 1, feature
Be: the radio frequency output frequency of the radiofrequency signal of the second local oscillator unit output is 700MHz~2800MHz, is used for NB-
The frequency coverage of IoT pilot signal and other communication standard pilot signal transmissions, power output range be -20dBm~+
45dBm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718873.5A CN106130573B (en) | 2016-08-25 | 2016-08-25 | The pilot signal method for generation of NB-IoT pilot signal generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718873.5A CN106130573B (en) | 2016-08-25 | 2016-08-25 | The pilot signal method for generation of NB-IoT pilot signal generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106130573A CN106130573A (en) | 2016-11-16 |
| CN106130573B true CN106130573B (en) | 2019-11-15 |
Family
ID=57275045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718873.5A Active CN106130573B (en) | 2016-08-25 | 2016-08-25 | The pilot signal method for generation of NB-IoT pilot signal generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106130573B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108234374B (en) * | 2016-12-14 | 2020-09-25 | 联芯科技有限公司 | Uplink multi-carrier transmitting device, system and method |
| CN108811044B (en) * | 2017-04-28 | 2021-01-26 | 深圳市中兴微电子技术有限公司 | Frequency scanning method and device for small-bandwidth communication system |
| CN107743059A (en) * | 2017-08-23 | 2018-02-27 | 重庆邮电大学 | A kind of antenna port number detection method for arrowband Internet of Things |
| CN109639614B (en) * | 2018-12-03 | 2021-09-03 | 上海创远仪器技术股份有限公司 | System and method for vector magnitude error measurement for NB _ IoT broadcast channel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1037395A3 (en) * | 1996-06-27 | 2003-04-23 | Interdigital Technology Corporation | Device and method for communication between base station and subscriber unit in CDMA communication system |
| CN103647529A (en) * | 2013-12-26 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Multimode signal generating device and signal generating method thereof |
| CN205961090U (en) * | 2016-08-25 | 2017-02-15 | 上海创远仪器技术股份有限公司 | NB ioT pilot signal generating device |
-
2016
- 2016-08-25 CN CN201610718873.5A patent/CN106130573B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1037395A3 (en) * | 1996-06-27 | 2003-04-23 | Interdigital Technology Corporation | Device and method for communication between base station and subscriber unit in CDMA communication system |
| CN103647529A (en) * | 2013-12-26 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Multimode signal generating device and signal generating method thereof |
| CN205961090U (en) * | 2016-08-25 | 2017-02-15 | 上海创远仪器技术股份有限公司 | NB ioT pilot signal generating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106130573A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Vendelin et al. | Microwave circuit design using linear and nonlinear techniques | |
| CN106130573B (en) | The pilot signal method for generation of NB-IoT pilot signal generating device | |
| CN102082752B (en) | Digital predistortion processing method and equipment | |
| CN104852752A (en) | System and method of self interference cancellation in high-efficiency full-duplex communication | |
| US10237109B2 (en) | Mitigating passive intermodulation interference in a wireless network | |
| CN102959882A (en) | Hybrid radio architecture for repeaters using RF cancellation reference | |
| CN102377470B (en) | Reconfigurable radio node and the method with the collaborative work of macrocell WAP (wireless access point) | |
| CN102474296B (en) | Self-interference cancellation method and device for multichannel modems | |
| CN105071882B (en) | Method and structure for realizing radio-frequency front end of multi-mode multi-antenna channel simulator | |
| CN102014094A (en) | Intelligent calibration method of antenna transmitting channel and antenna receiving channel and relevant device | |
| CN104917556B (en) | A kind of synchronous multibeam signals generation method based on ultrahigh speed DAC | |
| CN114073012B (en) | Reconstruction method and device of intermodulation interference signal | |
| CN101232472A (en) | Method for detecting OFDM signal channel mixed overlaying pilot frequency and data | |
| CN111474525A (en) | Ultra-wideband radar target echo signal simulation method and simulator | |
| WO2014079209A1 (en) | Base station and signal return method and device thereof | |
| CN105099535A (en) | Multichannel signal amplitude-phase characteristic weight matrix measurement method based on DS- CDMA | |
| CN205961090U (en) | NB ioT pilot signal generating device | |
| CN101895894B (en) | Method for selecting working channel of dynamic spectrum shared wireless communication system and device thereof | |
| US9112558B2 (en) | Communicating over a desired tone in the presence of interference having an unknown magnitude that is substantially constant | |
| Almantheri et al. | TV white space (TVWS) trial in Oman: Phase one (Technical) | |
| WO2016149907A1 (en) | Receiver and signal processing method | |
| CN102420620A (en) | Method and device for processing DC (Direct Current) leakage | |
| CN107911186A (en) | CORS Radio Data Systems and method | |
| CN101605004B (en) | Device and method for analyzing and measuring quality of TD-HSUPA signals | |
| CN207339864U (en) | CORS Radio Data Systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Block C, No. 7, Lane 205, Gaoji Road, Songjiang District, Shanghai, 201601 Patentee after: Chuangyuan Xinke (Shanghai) Technology Co.,Ltd. Address before: 200233 6th floor, Building 29, 69 Guiqing Road, Xuhui District, Shanghai Patentee before: TRANSCOM INSTRUMENTS Co.,Ltd. |
|
| CP03 | Change of name, title or address |