CN210693937U - 5G indoor distribution system - Google Patents
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- CN210693937U CN210693937U CN201922288995.7U CN201922288995U CN210693937U CN 210693937 U CN210693937 U CN 210693937U CN 201922288995 U CN201922288995 U CN 201922288995U CN 210693937 U CN210693937 U CN 210693937U
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Abstract
The utility model discloses an indoor distribution system of 5G, the utility model discloses a multifrequency combiner after the signal isolation of the different frequencies that come from 5G information source and other information sources closes the way, distributes to each coverage point behind ware, the coupler through a plurality of merits, accomplishes multifrequency signal's indoor wireless coverage through terminal antenna. The system realizes coverage of 5G signals by utilizing the traditional 2G/3G/4G indoor distribution system, can greatly save indoor coverage investment cost, and greatly improves operation and maintenance efficiency because the remote end module of the 5G indoor distribution system is visible and controllable.
Description
Technical Field
The utility model belongs to 5G communication field, concretely relates to indoor distribution system of 5G.
Background
In the traditional 2G/3G era, mobile communication works in a low-frequency band, and covering indoor and traditional indoor distribution systems by using outdoor macro-station signals is an effective scheme for solving indoor coverage; in the 4G era, the traditional indoor distribution system is still the main means for solving indoor coverage; with the increasing approach of 5G commercial footsteps, the 5G frequency band is higher, and passive devices (such as power divider, coupling, antenna and the like) used by the traditional indoor distribution system cannot directly meet the requirement of the 5G frequency band, but the traditional indoor distribution system is operated and maintained for many years, the indoor coverage area is wide, and the abandonment in the 5G indoor distribution scheme is even worse.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide an indoor distribution system of 5G, can introduce indoorly 5G signal coverage to indoor 5G through the indoor distribution system of traditional 2G 3G 4G basic station signal.
In order to achieve the purpose, the utility model comprises an information source, a multi-frequency combiner, a near-end module, a plurality of power dividers, a plurality of couplers and a plurality of far-end modules;
the signal source comprises a 5G signal source and other signal sources, the 5G signal source is connected with the near-end module, the near-end module and the other signal sources are both connected with the multi-frequency combiner, the multi-frequency combiner is connected with the first power divider, and the first power divider signal coverage system.
The signal coverage system comprises a first coupler, a second coupler and a second power divider, wherein the first coupler, the second coupler and the second power divider are all connected with the first power divider, the first coupler is connected with a third power divider and a corresponding far-end module, the third power divider is connected with the corresponding far-end module, the second coupler is connected with the corresponding far-end module and is connected with the third coupler in series, the third coupler is connected with the corresponding far-end module, and the second power divider is connected with the corresponding far-end module.
The other information sources comprise a 2G information source, a 3G information source and a 4G information source, and the 2G information source, the 3G information source and the 4G information source are all connected with the multi-frequency combiner.
The near-end module comprises a near-end donor switch and a synchronization module which are connected with the 5G information source, and a near-end covering switch which is connected with the multi-frequency combiner, the synchronization module is connected with the near-end donor switch and the near-end covering switch, and an uplink and a downlink are arranged between the near-end donor switch and the near-end covering switch;
the downlink comprises a near-end down-conversion module connected with the near-end donor switch, the downstream of the near-end down-conversion module is connected with a downlink filtering module, the downstream of the downlink filtering module is connected with a near-end downlink amplifying module, and the near-end downlink amplifying module is connected with a near-end covering switch;
the uplink comprises a near-end up-conversion module connected with the near-end covering switch, the downstream of the near-end up-conversion module is connected with an uplink filtering module, the downstream of the uplink filtering module is connected with a near-end uplink amplifying module, and the near-end uplink amplifying module is connected with a near-end donor switch;
and a near-end local oscillator module is arranged between the near-end down-conversion module and the near-end up-conversion module.
The far-end module comprises a coupling module and a duplex module which are connected with the upstream module, the coupling module is connected with the duplex module, the duplex module is connected with the covering antenna, and a far-end frequency conversion module is arranged between the coupling module and the duplex module.
The remote module is connected with the terminal antenna.
The far-end module comprises a coupling module connected with the upstream module, the coupling module is connected with the far-end frequency conversion module, and the far-end frequency conversion module is connected with the tail end antenna.
The far-end frequency conversion module comprises an intermediate frequency filtering module connected with the coupling module and a far-end covering switch connected with the duplex module, the intermediate frequency filtering module is connected with the far-end donor switch, and an uplink and a downlink are arranged between the far-end donor switch and the far-end covering switch;
the uplink comprises a far-end up-conversion module connected with the far-end donor switch, the downstream of the far-end up-conversion module is connected with a radio frequency filtering module, the downstream of the radio frequency filtering module is connected with a far-end downlink amplifier, and the far-end downlink amplifier is connected with a far-end covering switch;
the downlink comprises a far-end down-conversion module connected with the far-end covering switch, the downstream of the far-end down-conversion module is connected with a far-end uplink amplification module, and the far-end uplink amplification module is connected with a far-end donor switch;
a far-end local oscillator module is arranged between the far-end up-conversion module and the far-end down-conversion module, and the far-end donor switch, the far-end covering switch, the far-end up-conversion module, the far-end down-conversion module, the intermediate frequency filter module and the far-end local oscillator module are all connected with the monitoring module.
Compared with the prior art, the utility model discloses a multifrequency combiner divides behind ware, the coupler each coverage point of distributing behind the signal isolation way of the different frequencies that come from 5G information source and other information sources, accomplishes the indoor wireless coverage of multifrequency signal through terminal antenna to a plurality of merit. The system realizes coverage of 5G signals by utilizing the traditional 2G/3G/4G indoor distribution system, can greatly save indoor coverage investment cost, and greatly improves operation and maintenance efficiency because the remote end module of the 5G indoor distribution system is visible and controllable.
Drawings
FIG. 1 is a schematic block diagram of the system of the present invention;
fig. 2 is a schematic block diagram of the middle and near-end module of the present invention;
FIG. 3 is a functional block diagram of a remote module of embodiment 1;
FIG. 4 is a schematic block diagram of embodiment 2;
FIG. 5 is a functional block diagram of a remote module according to embodiment 2;
wherein, 1, an information source; 11. a 2G information source; 12. a 3G information source; 13. 4G information source; 14. 5G information source; 2. a multi-frequency combiner; 31. a first power divider; 32. a second power divider; 33. a third power divider; 41. a first coupler; 42. a second coupler; 43. A third coupler; 5. a terminal antenna; 6. a near-end module; 60. a synchronization module; 61. a near-end donor switch; 62. a near-end down conversion module; 63. a downlink filtering module; 64. a near-end downlink amplification module; 65. a proximal end cover module; 66. a near-end up-conversion module; 67. an uplink filtering module; 68. a near-end uplink amplification module; 69. a near-end local oscillation module; 7. a remote module; 71. a far-end frequency conversion module; 72. a coupling module; 73. a duplexing module; 74. a coverage antenna; 710. a middle screen filtering module; 711. a remote donor switch; 712. a far-end up-conversion module; 713. a radio frequency filtering module; 714. a far-end downlink amplifier; 715. a distal cover switch; 716. a far-end down-conversion module; 717. remote upgoing developed mocha; 718. a far-end local oscillation module; 719. monitoring the module;
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1:
referring to fig. 1, the utility model discloses an information source 1, multifrequency combiner 2, near-end module 6, a plurality of merit divide ware 3, a plurality of coupler 4 and a plurality of distal end module 7.
The signal source 1 comprises a 5G signal source 14 and other signal sources, the 5G signal source 14 is connected with the near-end module 6, the near-end module 6 and the other signal sources are both connected with the multi-frequency combiner 2, the multi-frequency combiner 2 is connected with the first power divider 31, and the first power divider 31 is used for signal coverage.
The 5G signal source 14 changes high-frequency (higher than 3GHz frequency band) 5G system radio frequency signals into low-frequency (lower than 3GHz frequency band) radio frequency signals through the near-end module 6, the multi-frequency combiner 2 isolates and combines signals with different frequencies from the 2G signal source 11, the 3G signal source 12, the 4G signal source 13, the near-end module 6 and the like, then the signals are distributed to each coverage point through the plurality of power dividers 3 and the coupler 4, and indoor wireless coverage of the multi-frequency signals is completed through the far-end module 7.
The signal coverage system includes a first coupler 41, a second coupler 42, and a second power divider 32, where the first coupler 41, the second coupler 42, and the second power divider 32 are all connected to the first power divider 31, the first coupler 41 is connected to the third power divider 33 and the corresponding remote module, the third power divider 33 is connected to the corresponding remote module, the second coupler 42 is connected to the corresponding remote module and is connected in series with the third coupler 43, the third coupler 43 is connected to the corresponding remote module, and the second power divider 32 is connected to the corresponding remote module.
The other sources include a 2G source 11, a 3G source 12 and a 4G source 13, and the 2G source 11, the 3G source 12 and the 4G source 13 are all connected to the multi-frequency combiner 2.
Referring to fig. 2, the near-end module 6 includes a near-end donor switch 61 and a synchronization module 60 connected to the 5G signal source 14, and a near-end overlay switch 65 connected to the multi-frequency combiner 2, the synchronization module 60 is connected to the near-end donor switch 61 and the near-end overlay switch 65, and an uplink and a downlink are provided between the near-end donor switch 61 and the near-end overlay switch 65;
the downlink comprises a near-end down-conversion module 62 connected with the near-end donor switch 61, the downstream of the near-end down-conversion module 62 is connected with a downlink filtering module 63, the downstream of the downlink filtering module 63 is connected with a near-end downlink amplification module 64, and the near-end downlink amplification module 64 is connected with a near-end covering switch 65;
the uplink comprises a near-end up-conversion module 66 connected to the near-end overlay switch 65, the near-end up-conversion module 66 is connected downstream to an uplink filtering module 67, the uplink filtering module 67 is connected downstream to a near-end uplink amplification module 68, and the near-end uplink amplification module 68 is connected to the near-end donor switch 61;
a near-end local oscillator module 69 is disposed between the near-end down conversion module 62 and the near-end up conversion module 66.
The near-end covering switch 65 is responsible for switching the uplink and the downlink of the intermediate-frequency signal after the frequency conversion of the 5G radio-frequency signal; the near-end down-conversion module 62 is responsible for down-converting the 5G downlink rf signal into an intermediate frequency signal; the near-end up-conversion module 66 is responsible for up-converting the intermediate frequency signal from the far-end module into a 5G uplink radio frequency signal; the downlink filtering module 63 is responsible for filtering out harmonic signals, local oscillator signals and other spurious signals of the downlink except for the intermediate frequency signals; the uplink filtering module 67 is responsible for filtering harmonic signals, local oscillator signals and other spurious signals of the uplink except for the 5G radio frequency signals; the near-end downlink amplifying module 64 is responsible for amplifying the downlink intermediate frequency signal to offset the loss of the power divider, the coupler and the radio frequency feeder cable; the near-end uplink amplification module 68 is responsible for amplifying the 5G uplink radio frequency signal to offset the loss of the power divider, the coupler and the radio frequency feeder cable; the near-end local oscillation module 69 is configured to provide local oscillation signals required for mixing by the near-end down-conversion module 62 and the near-end up-conversion module 66.
Referring to fig. 3, the remote module includes a coupling module 72 and a duplex module 73 connected to the upstream module, the coupling module 72 is connected to the duplex module 73, the duplex module 73 is connected to the cover antenna 74, and a remote frequency conversion module 71 is disposed between the coupling module 72 and the duplex module 73.
The far-end frequency conversion module 71 is responsible for completing up-down frequency conversion from the 5G radio frequency signal to the intermediate frequency, so that the 5G radio frequency signal is transmitted with low loss in the distribution system after being converted to the intermediate frequency; the coupling module 72 is used for coupling and separating a 5G signal in the distribution system and sending the signal to the far-end frequency conversion module for frequency conversion processing; the duplex module 73 is used for performing duplex combining on the 2G/3G/4G and 5G radio-frequency signals subjected to frequency conversion recovery by the far-end frequency conversion module 71; the overlay antenna 74 is responsible for transmitting 2G/3G/4G/5G radio frequency signals out to overlay the end user.
The far-end frequency conversion module 71 comprises an intermediate frequency filtering module 710 connected with the coupling module 72 and a far-end covering switch 715 connected with the duplex module 73, wherein the intermediate frequency filtering module 710 is connected with a far-end donor switch 711, and an uplink and a downlink are arranged between the far-end donor switch 711 and the far-end covering switch 715;
the uplink comprises a far-end up-conversion module 712 connected with a far-end donor switch 711, the far-end up-conversion module 712 is connected with a radio frequency filtering module 713 at the downstream, the radio frequency filtering module 713 is connected with a far-end downlink amplifier 714 at the downstream, and the far-end downlink amplifier 714 is connected with a far-end covering switch 715;
the downlink comprises a far-end down-conversion module 716 connected with a far-end covering switch 715, the far-end down-conversion module 716 is connected with a far-end uplink amplification module 717 at the downstream, and the far-end uplink amplification module 717 is connected with a far-end donor switch 711;
a far-end local oscillator module 718 is arranged between the far-end up-conversion module 712 and the far-end down-conversion module 716, and the far-end donor switch 711, the far-end cover switch 715, the far-end up-conversion module 712, the far-end down-conversion module 716, the intermediate frequency filtering module 710 and the far-end local oscillator module 718 are all connected with the monitoring module 719.
The monitoring module 719 completes the extraction of the 5G transceiving synchronization signal and the state monitoring of each sub-module in the remote frequency conversion module 71, including controlling the uplink and downlink working states of the remote donor switch 7111 and the remote cover switch 7155, controlling the local oscillation frequency of the remote local oscillation module 718, monitoring the working states of the remote up-conversion module 712 and the remote down-conversion module 716, and monitoring the uplink and downlink gain, power and other working parameters of the entire remote frequency conversion module 71; the intermediate frequency filtering module 710 is responsible for filtering the 2G/3G/4G standard signals coupled from the coupling module 72 and other spurious signals, and only retains 5G intermediate frequency signals; the remote donor switch 711 is responsible for switching the uplink and the downlink of the 5G intermediate frequency signal; the far-end covering switch 715 is responsible for switching the uplink and the downlink of the 5G radio frequency signals; the remote up-conversion module 712 is responsible for up-converting the 5G downlink intermediate frequency signal to recover the 5G radio frequency signal; the far-end down-conversion module 716 is responsible for down-converting the uplink radio frequency signal of the 5G terminal into a 5G uplink intermediate frequency signal; the radio frequency filtering module 713 is responsible for filtering harmonic signals, local oscillator signals and other spurious signals of the downlink except for 5G radio frequency signals; the downlink amplifying module 714 is responsible for amplifying the 5G radio frequency signal to offset the loss of the power divider, the coupler and the radio frequency feeder cable; the far-end uplink amplification module 717 is responsible for amplifying the 5G uplink signals to offset the loss of the power divider, the coupler and the radio frequency feeder cable; the far-end local oscillation module 718 is configured to provide local oscillation signals required for mixing by the far-end up-conversion module 712 and the far-end down-conversion module 716.
Example 2:
referring to fig. 4 and 5, the utility model discloses an end antenna 5 is connected to information source 1, multifrequency combiner 2, near-end module 6, a plurality of merit divide ware 3, a plurality of coupler 4 and a plurality of distal end module 7, distal end module.
The signal source 1 comprises a 5G signal source 14 and other signal sources, the 5G signal source 14 is connected with the near-end module 6, the near-end module 6 and the other signal sources are both connected with the multi-frequency combiner 2, the multi-frequency combiner 2 is connected with the first power divider 31, and the first power divider 31 is used for signal coverage.
The far-end module comprises a coupling module 72 connected with the upstream module, the coupling module 72 is connected with a far-end frequency conversion module 71, and the far-end frequency conversion module 71 is connected with the terminal antenna 5.
Other module connection relationships are the same as those in embodiment 1.
The mode of combining the near-end module of the 5G indoor distribution system into the POI is not limited to replacing the POI module, and the 2G/3G/4G signal and the output signal of the 5G near-end module can be output to be combined on the basis of the original POI. The 5G indoor distribution system is not limited to a single channel, and can also be in a multi-path MIMO mode.
Claims (8)
1. A5G indoor distribution system is characterized by comprising a signal source (1), a multi-frequency combiner (2), a near-end module (6), a plurality of power dividers (3), a plurality of couplers (4) and a plurality of far-end modules (7);
the signal source (1) comprises a 5G signal source (14) and other signal sources, the 5G signal source (14) is connected with the near-end module (6), the near-end module (6) and the other signal sources are connected with the multi-frequency combiner (2), the multi-frequency combiner (2) is connected with the first power divider (31), and the first power divider (31) is connected with the signal covering system.
2. A 5G indoor distribution system according to claim 1, wherein the signal coverage system comprises a first coupler (41), a second coupler (42) and a second power divider (32), the first coupler (41), the second coupler (42) and the second power divider (32) are all connected to the first power divider (31), the first coupler (41) is connected to the third power divider (33) and the corresponding remote module, the third power divider (33) is connected to the corresponding remote module, the second coupler (42) is connected to the corresponding remote module and is connected in series to the third coupler (43), the third coupler (43) is connected to the corresponding remote module, and the second power divider (32) is connected to the corresponding remote module.
3. A 5G indoor distribution system as claimed in claim 1, wherein the other sources include a 2G source (11), a 3G source (12) and a 4G source (13), the 2G source (11), the 3G source (12) and the 4G source (13) are all connected to the multi-frequency combiner (2).
4. A 5G indoor distribution system according to claim 1, wherein the near-end module (6) comprises a near-end donor switch (61) and a synchronization module (60) connected to the 5G source (14), and a near-end overlay switch (65) connected to the multi-frequency combiner (2), the synchronization module (60) is connected to the near-end donor switch (61) and the near-end overlay switch (65), and an uplink and a downlink are provided between the near-end donor switch (61) and the near-end overlay switch (65);
the downlink comprises a near-end down-conversion module (62) connected with the near-end donor switch (61), the downstream of the near-end down-conversion module (62) is connected with a downlink filtering module (63), the downstream of the downlink filtering module (63) is connected with a near-end downlink amplifying module (64), and the near-end downlink amplifying module (64) is connected with a near-end covering switch (65);
the uplink comprises a near-end up-conversion module (66) connected with the near-end coverage switch (65), the near-end up-conversion module (66) is connected with an uplink filtering module (67) at the downstream, the uplink filtering module (67) is connected with a near-end uplink amplifying module (68) at the downstream, and the near-end uplink amplifying module (68) is connected with the near-end donor switch (61);
a near-end local oscillator module (69) is arranged between the near-end down-conversion module (62) and the near-end up-conversion module (66).
5. A 5G indoor distribution system according to claim 1, wherein the remote end module comprises a coupling module (72) and a duplex module (73) connected with the upstream module, the coupling module (72) is connected with the duplex module (73), the duplex module (73) is connected with the coverage antenna (74), and a remote end frequency conversion module (71) is arranged between the coupling module (72) and the duplex module (73).
6. A 5G indoor distribution system according to claim 1, wherein the remote module is connected to the terminal antenna (5).
7. A5G indoor distribution system according to claim 6, wherein the remote modules comprise a coupling module (72) connected with the upstream module, the coupling module (72) is connected with the remote frequency conversion module (71), and the remote frequency conversion module (71) is connected with the terminal antenna (5).
8. A5G indoor distribution system according to claim 5 or 7, wherein the far-end frequency conversion module (71) comprises an intermediate frequency filter module (710) connected with the coupling module (72), and a far-end cover switch (715) connected with the duplex module (73), the intermediate frequency filter module (710) is connected with a far-end donor switch (711), and an uplink and a downlink are arranged between the far-end donor switch (711) and the far-end cover switch (715);
the uplink comprises a far-end up-conversion module (712) connected with a far-end donor switch (711), the downstream of the far-end up-conversion module (712) is connected with a radio frequency filtering module (713), the downstream of the radio frequency filtering module (713) is connected with a far-end downlink amplifier (714), and the far-end downlink amplifier (714) is connected with a far-end covering switch (715);
the downlink comprises a far-end down-conversion module (716) connected with a far-end covering switch (715), the far-end down-conversion module (716) is connected with a far-end uplink amplification module (717) at the downstream, and the far-end uplink amplification module (717) is connected with a far-end donor switch (711);
a far-end local oscillator module (718) is arranged between the far-end up-conversion module (712) and the far-end down-conversion module (716), and the far-end donor switch (711), the far-end covering switch (715), the far-end up-conversion module (712), the far-end down-conversion module (716), the intermediate frequency filtering module (710) and the far-end local oscillator module (718) are all connected with the monitoring module (719).
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| CN201922288995.7U CN210693937U (en) | 2019-12-18 | 2019-12-18 | 5G indoor distribution system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111770506A (en) * | 2020-07-08 | 2020-10-13 | 展讯通信（上海）有限公司 | Near-end and far-end control combiner unit, near-end and far-end subsystem and indoor subsystem |
| CN111865354A (en) * | 2020-06-24 | 2020-10-30 | 深圳市纽瑞芯科技有限公司 | Ultra-wideband integrated circuit system adopting multiple directional antennas to enhance coverage |
| CN112512055A (en) * | 2020-11-24 | 2021-03-16 | 中国移动通信集团黑龙江有限公司 | Indoor distribution single-path coverage system |
| CN112533282A (en) * | 2020-10-22 | 2021-03-19 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| CN112954706A (en) * | 2021-01-27 | 2021-06-11 | 深圳国人无线通信有限公司 | Wireless network communication indoor distribution system |
| CN113055899A (en) * | 2021-04-16 | 2021-06-29 | 罗森伯格技术有限公司 | Remote device and 5G distributed system |
| CN113206682A (en) * | 2021-04-29 | 2021-08-03 | 展讯通信（上海）有限公司 | Near-end combining unit, far-end combining unit and indoor distribution system |
| CN113364499A (en) * | 2021-06-02 | 2021-09-07 | 中邮科通信技术股份有限公司 | Frequency shift chamber sub-coverage system and method |
| CN116647853A (en) * | 2023-07-26 | 2023-08-25 | 赛尔通信服务技术股份有限公司 | DAS end passive device for enhancing 5G signal power |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865354A (en) * | 2020-06-24 | 2020-10-30 | 深圳市纽瑞芯科技有限公司 | Ultra-wideband integrated circuit system adopting multiple directional antennas to enhance coverage |
| CN111770506A (en) * | 2020-07-08 | 2020-10-13 | 展讯通信（上海）有限公司 | Near-end and far-end control combiner unit, near-end and far-end subsystem and indoor subsystem |
| CN111770506B (en) * | 2020-07-08 | 2022-08-09 | 展讯通信（上海）有限公司 | Near-end and far-end control combiner unit, near-end and far-end subsystem and indoor subsystem |
| CN112533282A (en) * | 2020-10-22 | 2021-03-19 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| CN112533282B (en) * | 2020-10-22 | 2021-08-06 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| CN112512055A (en) * | 2020-11-24 | 2021-03-16 | 中国移动通信集团黑龙江有限公司 | Indoor distribution single-path coverage system |
| CN112512055B (en) * | 2020-11-24 | 2023-07-07 | 中国移动通信集团黑龙江有限公司 | Indoor distribution single-path coverage system |
| CN112954706A (en) * | 2021-01-27 | 2021-06-11 | 深圳国人无线通信有限公司 | Wireless network communication indoor distribution system |
| CN113055899A (en) * | 2021-04-16 | 2021-06-29 | 罗森伯格技术有限公司 | Remote device and 5G distributed system |
| CN113206682A (en) * | 2021-04-29 | 2021-08-03 | 展讯通信（上海）有限公司 | Near-end combining unit, far-end combining unit and indoor distribution system |
| CN113364499A (en) * | 2021-06-02 | 2021-09-07 | 中邮科通信技术股份有限公司 | Frequency shift chamber sub-coverage system and method |
| CN116647853A (en) * | 2023-07-26 | 2023-08-25 | 赛尔通信服务技术股份有限公司 | DAS end passive device for enhancing 5G signal power |
| CN116647853B (en) * | 2023-07-26 | 2023-09-22 | 赛尔通信服务技术股份有限公司 | DAS end passive device for enhancing 5G signal power |
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