CN215734225U - 5G NR mobile phone companion system - Google Patents
5G NR mobile phone companion system Download PDFInfo
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- CN215734225U CN215734225U CN202121938016.9U CN202121938016U CN215734225U CN 215734225 U CN215734225 U CN 215734225U CN 202121938016 U CN202121938016 U CN 202121938016U CN 215734225 U CN215734225 U CN 215734225U
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Abstract
The utility model provides a 5G NR mobile phone companion system which comprises a first filter, a second filter, a downlink low-noise amplifier unit, a downlink power amplifier unit, an uplink low-noise amplifier unit, an uplink power amplifier unit, a frequency selection processing unit, a first second-third switch, a second-third switch, a fourth second-third switch, a power detection unit and a synchronization unit, wherein the first filter is connected with the downlink low-noise amplifier unit; the utility model can save hardware resources and reduce equipment cost.
Description
Technical Field
The utility model relates to the technical field of 5G communication, in particular to a 5G NR mobile phone companion system.
Background
With the popularization of 5G networks and the accelerated construction of base stations, scenes which need signal blindness correction, such as elevators, basements and the like, have the advantages of low cost, convenient construction and the like due to the mobile phone partner, so that the scenes can be covered by mobile phone partner products, and the investment cost is reduced. In the product design, two frequency selection circuits are usually required to be designed in a radio frequency link, specifically, the frequency selection circuits are required to be designed separately in an uplink and a downlink, which wastes hardware resources.
Disclosure of Invention
In view of the above, the present invention provides a 5G NR handset companion system capable of solving the above-mentioned background art.
The utility model is realized by adopting the following method: A5G NR mobile phone companion system comprises a first filter, a second filter, a downlink low-noise amplifier unit, a downlink power amplifier unit, an uplink low-noise amplifier unit, an uplink power amplifier unit, a frequency selection processing unit, a first second-to-first switch, a second-to-first switch, a third second-to-first switch, a fourth second-to-first switch, a power detection unit and a synchronization unit;
the first filter is used for filtering out frequency signals of uplink signals sent by the MS terminal antenna receiving terminal through the first filter, and the first filter is connected with the power detection unit and the first two-switch one-switch;
the second filter is used for filtering downlink signals sent by the base station received by the antenna at the BS end, filtering frequency signals through the second filter, and respectively connecting the fourth second switch and the synchronization unit;
the downlink low-noise amplification unit is used for amplifying downlink signals in low noise and is respectively connected with the third second one-off switch and the fourth second one-off switch;
the downlink power amplification unit is used for amplifying downlink signal power and is respectively connected with the first second-to-first switch and the second-to-first switch;
the uplink low-noise amplification unit is used for amplifying uplink signals with low noise and is respectively connected with the first second-switch-one switch and the third second-switch-one switch;
the uplink power amplification unit is used for an uplink signal power method and is respectively connected with the second one-off switch and the fourth one-off switch;
the frequency selection processing unit is used for filtering 5G NR uplink and downlink signals with high rectangular coefficients and controlling uplink and downlink output power and is respectively connected with the first second-to-first switch and the third second-to-first switch;
the power detection unit is used for detecting the output power of the downlink power amplification unit;
and the synchronization unit is used for completing cell search and wireless signaling processing of the 5G NR wireless network.
The system further comprises a monitoring unit, a logic control unit and a power supply unit, wherein the monitoring unit is used for monitoring switching of a radio frequency channel switch, detection of output signal power and control processing of output power; the logic control unit is used for controlling the switching of the uplink and downlink channels and the switching of the frequency selection processing unit; and the power supply unit is used for supplying power to the mobile phone companion system.
Furthermore, the input end of the synchronization unit is connected with the second filter, and the output end of the synchronization unit connects the uplink and downlink time indication signal with the logic control unit through a GPIO interface.
Further, the frequency signal filtered by the first filter and the second filter ranges from 3300MHz to 3600 MHz.
The utility model has the beneficial effects that: because the 5G NR operating mode is a TDD (Time Division duplex) mode, that is, only one link is operating at the same Time in the Time domain, it can be understood that the uplink and downlink links operate separately, so the theoretical technique of designing a frequency selection processing unit shared by the uplink and downlink circuits is feasible.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
Fig. 2 is a schematic diagram of a system implementation of the present invention.
Fig. 3 is a block diagram of the frequency selection processing unit.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides an embodiment: A5G NR mobile phone companion system comprises a first filter, a second filter, a downlink low-noise amplifier unit, a downlink power amplifier unit, an uplink low-noise amplifier unit, an uplink power amplifier unit, a frequency selection processing unit, a first second-to-first switch, a second-to-first switch, a third second-to-first switch, a fourth second-to-first switch, a power detection unit and a synchronization unit;
the first filter is used for filtering out frequency signals of uplink signals sent by the MS terminal antenna receiving terminal through the first filter, and the first filter is connected with the power detection unit and the first two-switch one-switch;
the second filter is used for filtering downlink signals sent by the base station received by the antenna at the BS end, filtering frequency signals through the second filter, and respectively connecting the fourth second switch and the synchronization unit;
the downlink low-noise amplification unit is used for amplifying downlink signals in low noise and is respectively connected with the third second one-off switch and the fourth second one-off switch;
the downlink power amplification unit is used for amplifying downlink signal power and is respectively connected with the first second-to-first switch and the second-to-first switch;
the uplink low-noise amplification unit is used for amplifying uplink signals with low noise and is respectively connected with the first second-switch-one switch and the third second-switch-one switch;
the uplink power amplification unit is used for an uplink signal power method and is respectively connected with the second one-off switch and the fourth one-off switch;
the frequency selection processing unit is used for filtering 5G NR uplink and downlink signals with high rectangular coefficients and controlling uplink and downlink output power and is respectively connected with the first second-to-first switch and the third second-to-first switch;
the power detection unit is used for detecting the output power of the downlink power amplification unit; and the information detected by the power detection chip is sent to the monitoring unit;
the synchronization unit is used for completing cell search and wireless signaling processing of the 5G NR wireless network; and the HR-TD-05A baseband synchronization module is adopted, but the method is not limited to the HR-TD-05A baseband synchronization module, the cell search and the wireless signaling processing of the 5G NR wireless network can be automatically completed, the input is connected with the second filter, and the output is used for connecting the uplink and downlink time slot indication signals with a logic control unit through a GPIO interface.
The monitoring unit is used for monitoring switching of a radio frequency channel switch, output signal power detection and output power control processing; the logic control unit is used for controlling the switching of the uplink and downlink channels and the switching of the frequency selection processing unit; and the power supply unit is used for supplying power to the mobile phone companion system.
The input end of the synchronization unit is connected with the second filter, and the output end of the synchronization unit is connected with the uplink and downlink time indication signal and the logic control unit through a GPIO (general purpose input/output) interface.
The frequency signal range filtered by the first filter and the second filter is 3300MHz-3600 MHz.
The utility model is further illustrated by the following specific examples:
referring to fig. 2, the working mode of the downlink working link is illustrated, in which the antenna at the BS end receives the downlink signal sent by the base station, filters out the frequency signal of 3600MHz with 3300 + by the second filter, and couples the signal to the synchronization unit, and the synchronization unit processes and outputs the uplink and downlink timeslot indication signal to the logic control unit for processing, so as to control the first two-switch-one switch, the second two-switch-one switch, the third two-switch-one switch, and the fourth two-switch-one switch to perform uplink and downlink channel switching. And the downlink 5G signal passes through the second filter, then passes through the fourth second switch, enters the downlink low-noise amplification unit, then passes through the third second switch, then passes through the frequency selection processing unit, is subjected to signal high rectangular coefficient filtering processing, then passes through the second switch, is connected with the downlink power amplification unit to perform power amplification, then passes through the first second switch, and then passes through the MS end antenna after being subjected to first filter filtering, and then covers the processed downlink signal to the mobile phone. And the first switch is coupled with one path to the power detection unit after the first switch is switched off, and the power detection unit is used for detecting the output power of the downlink power amplification unit and sending information detected by the power detection chip to the monitoring unit so as to control the downlink output power.
The working mode of the uplink working link is explained, an antenna at the MS end receives an uplink signal sent by a mobile phone, filters a frequency signal of 3600MHz 3300-plus-one frequency through a first filter, switches to an uplink low noise amplifier through a first second switch, then switches to a third second switch, and then to a frequency selection processing unit, performs high rectangular coefficient filtering on the signal, then switches to a second switch, connects to an uplink power amplification unit to perform power amplification, then switches to a fourth second switch, performs second filter filtering, and then transmits the uplink signal to a base station through an antenna at the BS end. Because the uplink and downlink frequency selection processing units are shared, the uplink output power is changed synchronously with the change of the downlink output power.
Referring to fig. 3, the frequency selection processing unit is configured to process 5G uplink and downlink signals by high rectangular coefficient filtering. The specific up-link and down-link 3300-3600MHz signals enter the frequency selection processing unit through the selection of the third second-switch-one switch. Firstly, after being filtered by the surface acoustic wave filter, the signal of the amplifying tube is amplified by the ATT circuit, and then the signal is filtered again by the surface acoustic wave filter. Then the signal enters a down converter to be mixed with LO signal, the frequency is converted to intermediate frequency signal, the intermediate frequency is 230.4MHz, an intermediate frequency amplifying tube is used for amplifying, then the intermediate frequency is connected with a high rectangular coefficient intermediate frequency filter with the intermediate frequency of 230.4MHz and the bandwidth of 100MHz for filtering, the intermediate frequency amplifying tube is used for amplifying, then the signal enters an up converter to be mixed with LO signal, and the radio frequency signal is recovered. Then, the acoustic surface filter is connected to filter stray such as leakage of the row. The useful signals of the 3300-3600MHz signals are processed by the frequency selection processing unit and then selectively output through the second one-off switch.
In short, the utility model can select any 100MHz to work within 3300-. For example, currently, the 5G spectrum resource in the chinese telecommunication is 3400-.
The ATT circuit in the frequency selection processing unit and the power detection unit form a closed loop and are controlled by the monitoring unit. The specific power detection unit detects the output power of the downlink power amplification unit and sends information detected by the power detection chip to the monitoring unit. And then comparing the output power value with the output power value set by the system, if the output power value is larger than the output power value, performing signal attenuation through an ATT circuit, and realizing the output power control function of the 5G NR uplink and downlink signals.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (4)
1. A5G NR mobile phone companion system, which is characterized in that: the frequency selection device comprises a first filter, a second filter, a downlink low-noise amplifier unit, a downlink power amplifier unit, an uplink low-noise amplifier unit, an uplink power amplifier unit, a frequency selection processing unit, a first two-to-one switch, a second two-to-one switch, a third two-to-one switch, a fourth two-to-one switch, a power detection unit and a synchronization unit;
the first filter is used for filtering out frequency signals of uplink signals sent by the MS terminal antenna receiving terminal through the first filter, and the first filter is connected with the power detection unit and the first two-switch one-switch;
the second filter is used for filtering downlink signals sent by the base station received by the antenna at the BS end, filtering frequency signals through the second filter, and respectively connecting the fourth second switch and the synchronization unit;
the downlink low-noise amplification unit is used for amplifying downlink signals in low noise and is respectively connected with the third second one-off switch and the fourth second one-off switch;
the downlink power amplification unit is used for amplifying downlink signal power and is respectively connected with the first second-to-first switch and the second-to-first switch;
the uplink low-noise amplification unit is used for amplifying uplink signals with low noise and is respectively connected with the first second-switch-one switch and the third second-switch-one switch;
the uplink power amplification unit is used for an uplink signal power method and is respectively connected with the second one-off switch and the fourth one-off switch;
the frequency selection processing unit is used for filtering 5G NR uplink and downlink signals with high rectangular coefficients and controlling uplink and downlink output power and is respectively connected with the first second-to-first switch and the third second-to-first switch;
the power detection unit is used for detecting the output power of the downlink power amplification unit;
and the synchronization unit is used for completing cell search and wireless signaling processing of the 5G NR wireless network.
2. The 5G NR handset companion system according to claim 1, wherein: the monitoring unit is used for monitoring switching of a radio frequency channel switch, output signal power detection and output power control processing; the logic control unit is used for controlling the switching of the uplink and downlink channels and the switching of the frequency selection processing unit; and the power supply unit is used for supplying power to the mobile phone companion system.
3. The 5G NR handset companion system according to claim 2, wherein: the input end of the synchronization unit is connected with the second filter, and the output end of the synchronization unit is connected with the uplink and downlink time indication signal and the logic control unit through a GPIO (general purpose input/output) interface.
4. The 5G NR handset companion system according to claim 1, wherein: the frequency signal range filtered by the first filter and the second filter is 3300MHz-3600 MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121938016.9U CN215734225U (en) | 2021-08-18 | 2021-08-18 | 5G NR mobile phone companion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121938016.9U CN215734225U (en) | 2021-08-18 | 2021-08-18 | 5G NR mobile phone companion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215734225U true CN215734225U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121938016.9U Active CN215734225U (en) | 2021-08-18 | 2021-08-18 | 5G NR mobile phone companion system |
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|---|---|
| CN (1) | CN215734225U (en) |
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2021
- 2021-08-18 CN CN202121938016.9U patent/CN215734225U/en active Active
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