CN216748101U - Adopt TDD synchronizing signal device that big dipper acquireed 5G signal - Google Patents
Adopt TDD synchronizing signal device that big dipper acquireed 5G signal Download PDFInfo
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- CN216748101U CN216748101U CN202123110123.5U CN202123110123U CN216748101U CN 216748101 U CN216748101 U CN 216748101U CN 202123110123 U CN202123110123 U CN 202123110123U CN 216748101 U CN216748101 U CN 216748101U
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Abstract
The utility model provides an adopt the big dipper to acquire TDD synchronizing signal device of 5G signal, includes: the device comprises an antenna for receiving a Beidou signal, a low noise amplifier, a Beidou special chip, a CPLD, a microcontroller and a power supply module; the antenna for receiving the Beidou signals is connected with the low-noise amplifier, the low-noise amplifier is connected with the Beidou special chip, the Beidou special chip is connected with the CPLD, and the Beidou special chip and the CPLD are respectively connected with the microcontroller; the power module is respectively connected with the low noise amplifier, the Beidou special chip, the CPLD and the microcontroller. The utility model discloses a big dipper chip realizes a device of TDD synchronizing signal output, and the pulse per second signal of its accurate output comes when proofreading and correct synchronizing signal, keeps with basic station time synchronization, realizes that basic station information extends and covers.
Description
Technical Field
The utility model belongs to the technical field of communication equipment, concretely relates to adopt the big dipper to acquire TDD synchronizing signal device of 5G signal.
Background
With the construction of 5G networks in China becoming better and better, the coverage of outdoor 5G signals also becoming better and better, but the coverage of indoor 5G signals is still not ideal, if a base station mode is adopted, although the coverage problem can be solved, the cost is too high at present, so the indoor signal coverage problem needs to be solved by means of some signal amplifiers, and because the current domestic 5G is completed by a TDD system, in order to ensure that signals are synchronous with the base station, a TDD synchronous signal control circuit is needed in each device to realize the uplink and downlink switching of the device. At present, there are several general ways, one is to adopt a baseband chip to demodulate and output a TDD synchronous control signal, which has higher cost at present and large later quantity to reduce the cost; the other is demodulation by an algorithm, which is difficult and expensive and cannot be realized by general companies.
Disclosure of Invention
The utility model aims to solve the technical problem that a TDD synchronizing signal device that adopts the big dipper to acquire the 5G signal is provided, keeps with basic station time synchronization, realizes that basic station information extends the cover.
The utility model discloses a realize like this:
the utility model provides an adopt the big dipper to acquire TDD synchronizing signal device of 5G signal, includes: the device comprises an antenna for receiving a Beidou signal, a low noise amplifier, a Beidou special chip, a CPLD, a microcontroller and a power supply module;
the antenna for receiving the Beidou signal is connected with the low-noise amplifier, the low-noise amplifier is connected with the Beidou special chip, the Beidou special chip is connected with the CPLD, and the Beidou special chip and the CPLD are respectively connected with the microcontroller;
the power module is respectively connected with the low noise amplifier, the Beidou special chip, the CPLD and the microcontroller.
Further, the model of the low noise amplifier is SKY67159-396 LF.
Furthermore, the model of the Beidou special chip is Hexingtong UM220-IV L.
Further, the model of the CPLD is 5M240ZT100C 5N.
Further, the microcontroller is of the model STM32F030C8T 6.
The utility model has the advantages that: the utility model discloses a device of TDD synchronizing signal output is realized to big dipper chip, and this technique relies on the big dipper chip of the independent intellectual property right of china, and the pulse per second signal of its accurate output comes when proofreading and correct synchronizing signal, keeps with basic station time synchronization, realizes that basic station information extends the cover.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a hardware schematic block diagram of the present invention.
Detailed Description
As shown in fig. 1, a TDD synchronization signal apparatus for acquiring 5G signals by using beidou includes: the low-noise amplifier is provided with an antenna for receiving the Beidou signal, a Beidou special chip, a CPLD, a microcontroller and a power supply module; the low noise amplifier with the antenna for receiving the Beidou signal is connected with the Beidou special chip, the Beidou special chip is connected with the CPLD, and the Beidou special chip and the CPLD are respectively connected with the microcontroller; the power module is respectively connected with the low noise amplifier with the antenna for receiving the Beidou signal, the Beidou special chip, the CPLD and the microcontroller. The model of the low noise amplifier is SKY67159-396LF, the model of the Beidou special chip is and core Xingtong UM220-IV L, the model of the CPLD is 5M240ZT100C5N, and the model of the microcontroller is STM32F030C8T 6.
The utility model discloses mainly be through big dipper receiving antenna pull to outdoor spacious place, ensure to receive big dipper signal, can satisfy the basic demand of big dipper chip locking. Because the signal transmitted by the satellite is very weak, a pre-stage low noise amplifier is arranged in the Beidou receiving antenna, a 5V voltage needs to be fed to the Beidou receiving antenna from an equipment end, the amplified signal is connected to a Beidou special chip, the Beidou receiving chip can output a synchronous second pulse signal (1 second pulse signal with a rising edge) which is the same as the reference of a base station after being locked, the signal is sent to a CPLD unit, the CPLD unit carries out calculation according to the instruction of a microcontroller, the instruction of the microcontroller is mainly based on configuration information sent to the microcontroller by a platform, such as the length of 5G downlink time and the length of uplink time specified in a 3GPP protocol, the current specified period in the protocol is 5ms, and a 5ms control signal with 200 periods is generated in 1 second according to the stability of the microcontroller. And carrying out real-time calibration after a new round of second pulse to ensure that the deviation of the switching signal does not exceed 2us, so that the switching signal outputs an uplink TDD synchronous control signal and a downlink TDD synchronous control signal to be synchronous with the base station.
The utility model discloses a device of TDD synchronizing signal output is realized to big dipper chip, and this technique relies on the big dipper chip of the independent intellectual property right of china, and the pulse per second signal of its accurate output comes when proofreading and correct synchronizing signal, keeps with basic station time synchronization, realizes that basic station information extends the cover.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (5)
1. The utility model provides an adopt the big dipper to acquire TDD synchronizing signal device of 5G signal which characterized in that: the method comprises the following steps: the device comprises an antenna for receiving a Beidou signal, a low noise amplifier, a Beidou special chip, a CPLD, a microcontroller and a power supply module;
the antenna for receiving the Beidou signals is connected with the low-noise amplifier, the low-noise amplifier is connected with the Beidou special chip, the Beidou special chip is connected with the CPLD, and the Beidou special chip and the CPLD are respectively connected with the microcontroller;
the power module is respectively connected with the low noise amplifier, the Beidou special chip, the CPLD and the microcontroller.
2. The TDD synchronization signal apparatus for acquiring 5G signals using beidou as recited in claim 1, further comprising: the model of the low-noise amplifier is SKY67159-396 LF.
3. The TDD synchronization signal apparatus for acquiring 5G signals using beidou as claimed in claim 1, wherein: the model of the Beidou special chip is Hetong Hexingtong UM220-IV L.
4. The TDD synchronization signal apparatus for acquiring 5G signals using beidou as claimed in claim 1, wherein: the model of the CPLD is 5M240ZT100C 5N.
5. The TDD synchronization signal apparatus for acquiring 5G signals using beidou as claimed in claim 1, wherein: the microcontroller is of the model STM32F030C8T 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123110123.5U CN216748101U (en) | 2021-12-13 | 2021-12-13 | Adopt TDD synchronizing signal device that big dipper acquireed 5G signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123110123.5U CN216748101U (en) | 2021-12-13 | 2021-12-13 | Adopt TDD synchronizing signal device that big dipper acquireed 5G signal |
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| Publication Number | Publication Date |
|---|---|
| CN216748101U true CN216748101U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123110123.5U Active CN216748101U (en) | 2021-12-13 | 2021-12-13 | Adopt TDD synchronizing signal device that big dipper acquireed 5G signal |
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| CN (1) | CN216748101U (en) |
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2021
- 2021-12-13 CN CN202123110123.5U patent/CN216748101U/en active Active
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