CN209861174U - A Passive Indoor Distribution System - Google Patents

Abstract

The embodiment of the utility model discloses passive indoor distribution system, wherein, the system includes: the indoor distribution information source is configured to provide various types of communication signals of an indoor distribution system, and the different types of communication signals are power-combined to obtain a power-combined signal; providing direct current power supply capacity for the distribution network and the indoor distribution antenna, and performing power synthesis on the power synthesis signal and the direct current power supply signal to obtain a combined signal; the distribution network is configured to transmit the power synthesis signal and the direct current supply signal in the combined signal to the indoor distribution antenna through different paths respectively; an indoor distributed antenna configured to be powered by the DC power supply signal and radiate the power combined signal into a radio frequency signal; the indoor distributed information source, the distribution network and the indoor distributed antenna are connected by a feeder line, and the feeder line is used for transmitting radio frequency signals and direct current.

Description

A Passive Indoor Distribution System

technical field

Embodiments of the present invention relate to but are not limited to communication technologies, and in particular to a passive indoor distribution system.

Background technique

The passive indoor distribution system is a successful solution for indoor user groups to improve the mobile communication environment in buildings; the indoor antenna distribution system evenly distributes the signals of mobile base stations in every corner of the room, thus ensuring that the indoor area has ideal signal coverage. In the prior art, an active circuit is installed inside the distributed antenna to make it identifiable. The existing antenna power supply methods include button battery power supply, or wireless charging device power supply, or charging converter power supply.

The existing antenna power supply method includes using a button battery for power supply, but the button battery has limited capacity and needs to be replaced regularly. In one technology, a wireless communication device is charged by converting a radio frequency signal into electrical energy, but the efficiency of the wireless charging device is low, the system complexity is high, and the cost is relatively high. In another technology, low-power beacons are powered by a charging converter that converts ambient light into electricity. However, the indoor ambient light intensity is affected by the use environment, and the stability of the converted electricity is low.

Contents of the invention

In view of this, the embodiment of the utility model provides a passive indoor distribution system to solve at least one problem existing in the prior art.

The technical scheme of the utility model embodiment is realized like this:

The embodiment of the utility model provides a passive indoor distribution system, the system includes an indoor distribution source, a distribution network and an indoor distribution antenna; wherein:

The indoor distribution signal source is configured to provide various types of communication signals of the indoor distribution system, combine the power of different types of communication signals to obtain a power synthesis signal; and provide DC power supply to the distribution network and the indoor distribution antenna Capability, and combine the power combination signal with the DC power supply signal to obtain the combination signal;

The distribution network is configured to transmit the power synthesis signal and the DC power supply signal in the combined signal to the indoor distribution antennas respectively through different paths;

The indoor distributed antenna is configured to be powered by the DC power supply signal, and radiate the power combined signal into a radio frequency signal;

The indoor distribution signal sources, the distribution network and the indoor distribution antennas are connected by feeders, and the feeders are used to transmit radio frequency signals and direct current.

In some embodiments, the indoor distributed signal source includes: a radio remote unit (Radio Remote Unit, RRU), a multi-frequency combiner, a DC power supply device, and a DC combiner, wherein:

RRU configured to provide different types of communication signals for the indoor distribution system;

A multi-frequency combiner configured to perform power synthesis on different types of communication signals to obtain a power synthesis signal;

A DC power supply device configured to provide DC power supply capability to the distribution network and the indoor distribution antenna;

The DC combiner is configured to have the capability of DC power supply, and the power combination signal is combined with the DC power supply signal to obtain a combined signal.

In some embodiments, the distribution network includes: a through-DC coupler and a through-DC power divider; wherein:

A direct-current coupler configured to have a direct-current power supply capability, and transmit the power synthesis signal and the direct-current power supply signal in the combined signal to the direct-current power splitter respectively;

A DC power splitter is configured to have a DC power supply capability, and divides the energy of one power synthesis signal into two or more outputs.

In some embodiments, the indoor distributed antenna includes: an antenna and an active module; wherein:

an antenna configured to radiate the power combined signal into a radio frequency signal;

The active module is configured to have the capability of taking DC power through an inductor.

In some embodiments, the DC power supply device is a gateway, and the gateway manages the working status of the active modules inside the active antenna, and also has a DC power supply capability.

In some embodiments, the gateway is integrated in the source.

In some embodiments, feeder lines are used to connect the indoor distribution signal source, the distribution network, and various internal components of the indoor distribution antenna.

The embodiment of the utility model provides a passive indoor distribution system, wherein the system includes: an indoor distribution signal source configured to provide various types of communication signals of the indoor distribution system, and synthesize the power of different types of communication signals to obtain power Combining signals; and providing DC power supply capabilities to the distribution network and the indoor distribution antenna, and performing power synthesis on the power synthesis signal and the DC power supply signal to obtain a combined signal; the distribution network is configured to pass through different paths. The power synthesis signal and the DC power supply signal in the combined signal are transmitted to the indoor distribution antenna respectively; the indoor distribution antenna is configured to supply power through the DC power supply signal, and radiate the power synthesis signal into a radio frequency signal; The distributed signal source, the distributed network and the indoor distributed antenna are connected by a feeder, and the feeder is used to transmit radio frequency signals and direct current; thus, by introducing a passive device for direct current, it is realized as an active antenna in the active antenna. The module provides DC power supply capability, reduces the complexity of the system, has high charging efficiency and stable system.

Description of drawings

Fig. 1 is the composition structure schematic diagram of the passive indoor distribution system of the utility model embodiment;

Fig. 2 is a schematic diagram of the composition and structure of the passive indoor distribution system with DC power supply capability provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of the composition and structure of a combiner or coupler or power divider with DC power supply capability in an embodiment of the present invention;

Fig. 4 is a schematic diagram of the composition and structure of a combiner or a coupler or a power divider with a DC power supply capability according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the composition and structure of a combiner or a coupler or a power divider with a DC power supply capability according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of the implementation of matching elements 1 and 2 according to the embodiment of the present invention.

Detailed ways

The passive indoor distribution system is a successful solution for indoor user groups to improve the mobile communication environment in buildings; the indoor antenna distribution system evenly distributes the signals of mobile base stations in every corner of the room, thus ensuring that the indoor area has ideal signal coverage. In the prior art, an active circuit is installed inside the distributed antenna to make it identifiable. The existing antenna power supply methods include button battery power supply, or wireless charging device power supply, or charging converter power supply.

The wireless charging device provided in the related art ensures the stability of the working performance of the wireless communication device by converting radio frequency signals into electric energy to power the wireless communication device. On the other hand, when monitoring the working state of the wireless communication device, The monitoring signal can be transmitted through the air interface signal, thereby eliminating the need to lay additional monitoring cables and reducing monitoring costs. The difference between the related technology and the passive indoor distribution system provided by this embodiment is that the wireless communication device charges it by converting radio frequency signals into electrical energy, but requires additional power distribution modules, wireless charging modules and rechargeable batteries, and the system complexity High and low charging efficiency. In the technology disclosed in this patent, by introducing a capacitive matching element and an inductive matching element in the feeder network, the DC power supply of the passive indoor distribution system can be realized, the complexity of the system is reduced, and the cost is saved.

The related art also provides a low-power positioning beacon method, and the embodiments provide an "always-on", accurate, low-power and low-cost solution for indoor positioning. The indoor location solution is enabled by one or more low-power, low-cost location beacons that can be easily configured and installed to support location determination in any indoor environment. In an embodiment, the location beacon uses a low power, low data rate radio technology (eg, Bluetooth Low Energy (BLE)), which is well suited to support typical indoor environments and data rates required for location positioning. The location beacon can be recharged via ambient light and does not require an external power source. In addition, location beacons benefit from a very cost-effective design, which allows universal utilization of the implemented indoor positioning solution in a variety of indoor locations, public or private, small or large. The difference between this related technology and the passive indoor distribution system provided by this embodiment is that the low power consumption beacon uses a charging converter to power it, and the charging converter converts ambient light into electrical energy; however, the indoor ambient light intensity is affected by Due to the influence of the use environment, the stability of the converted electricity is low. In the technology disclosed in this embodiment, the indoor distribution system has a DC power supply capability, and the DC power can be used to power the active antenna, which improves the stability of the indoor positioning system.

The technical scheme of the utility model is further elaborated below in conjunction with the accompanying drawings and embodiments.

This embodiment proposes a passive indoor distribution system. Figure 1 is a schematic diagram of the composition and structure of the passive indoor distribution system according to an embodiment of the present invention. As shown in Figure 1, the system 10 includes an indoor distribution source 11, a distribution network 12 and Indoor distributed antenna 13; where:

The indoor distribution signal source 11 is configured to provide various types of communication signals of the indoor distribution system, combine the power of different types of communication signals to obtain a power synthesis signal; and provide DC to the distribution network and the indoor distribution antenna power supply capability, and combine the power combining signal with the DC power supply signal to obtain the combining signal;

During implementation, different types of communication signals may be communication signals of different frequencies, and of course may also be communication signals of different communication systems, such as 2G/3G/4G/5G communication signals. Among them, the DC power supply signal can be considered as a zero-frequency signal, and the power combining signal can be considered as an AC signal, and sometimes it can be considered as a high-frequency AC signal.

The distribution network 12 is configured to transmit the power combined signal and the DC power supply signal in the combined signal to the indoor distributed antennas respectively through different paths;

In the implementation process, the different paths refer to the AC path and the DC path, for example, the DC power supply signal is transmitted to the subsequent network through the DC path, and the power synthesis signal is transmitted to the subsequent network through the AC path. It should be noted that the distribution network 12 has an AC path and a DC path, so that different signals (rate synthesis signal and DC power supply signal) can be transmitted to the subsequent network respectively. If the distribution network 12 includes different devices, each A device also has different paths to transmit the rate synthesis signal and the DC power supply signal to the subsequent network.

In the process of implementation, the distribution network 12 may include: couplers and power splitters, wherein the couplers in the distribution network 12, the power splitters, and the combiners in the indoor distribution signal source 11 can all be connected by different components Realize different paths, for example, matching element 1 and matching element 2, wherein, matching element 1 has the characteristic of passing AC and resisting DC, and is used to realize path 1; matching element 2 has the characteristic of passing DC and resisting AC, and is used to realize path 2. Indoor distributed signal sources send signals in the 800-2700MHz frequency band. Since the matching element in channel 2 has AC blocking characteristics, the radio frequency signal is transmitted through channel 1. The DC signal sent by the DC power supply device is propagated through the channel 2, and the matching element 1 in the channel 1 has a DC blocking characteristic, and the DC signal cannot pass through the channel 1. The signal transmission medium is a feeder, which can transmit both radio frequency signals and direct current signals. The direct current is a zero-frequency signal and will not interfere with radio frequency signals. In the embodiment, the matching element 1 is a capacitive device, and the matching element 2 is an inductive device.

The indoor distributed antenna 13 is configured to be powered by the DC power supply signal, and radiate the power combined signal into a radio frequency signal;

The indoor distribution signal sources, the distribution network and the indoor distribution antennas are connected by feeders, and the feeders are used to transmit radio frequency signals and direct current.

In this embodiment, a passive indoor sub-system with DC power supply capability is provided. By introducing passive devices that pass DC power into the feeder network, the DC power supply capability for the active modules in the active antenna is realized, reducing the The complexity of the system, the charging efficiency is high and the system is stable.

This embodiment proposes a passive indoor distribution system, which includes an indoor distributed signal source, a distribution network, and an indoor distributed antenna; wherein:

(1) The indoor distributed signal sources include: multiple RRUs, multi-frequency combiners, DC power supply devices and DC combiners, wherein:

Multiple RRUs configured to provide different types of communication signals for the indoor distribution system;

A multi-frequency combiner configured to perform power synthesis on different types of communication signals to obtain a power synthesis signal;

A DC power supply device configured to provide DC power supply capability to the distribution network and the indoor distribution antenna;

The DC combiner is configured to have the capability of DC power supply, and the power combination signal is combined with the DC power supply signal to obtain a combined signal.

(2) The distribution network includes: a direct-current coupler and a direct-current power splitter; wherein:

A direct-current coupler configured to have a direct-current power supply capability, and transmit the power synthesis signal and the direct-current power supply signal in the combined signal to the direct-current power splitter respectively;

A DC power splitter is configured to have a DC power supply capability, and divides the energy of one power synthesis signal into two or more outputs.

In the process of implementation, the through-DC coupler can include one, and the through-DC power divider can be set to multiple, such as P, of course, it can also be set according to the type and quantity of the communication signal, that is to say, the through-DC The number of power splitters may be the same as or different from the number of RRUs.

(3) The indoor distributed antenna includes: an antenna and an active module; wherein:

an antenna configured to radiate the power combined signal into a radio frequency signal;

The active module is configured to have the capability of taking DC power through an inductor.

During implementation, the number of distributed antennas 13 indoors is the same as the number of direct current splitters.

In some embodiments, the DC power supply device is a gateway, and the gateway manages the working status of the active modules inside the active antenna, and also has a DC power supply capability.

In some embodiments, the gateway is integrated in the source.

In some embodiments, feeder lines are used to connect the indoor distribution signal source, the distribution network, and various internal components of the indoor distribution antenna.

This embodiment provides a combiner, coupler and power divider with DC power supply capability. By introducing a passive device that passes DC power into the feeder network, it is realized to provide DC power supply for the active module in the active antenna. ability, reducing the complexity of the system, high charging efficiency and stable system.

This embodiment provides a passive indoor distribution system with DC power supply capability. The system architecture is shown in Figure 2. The passive indoor distribution system includes three components: indoor distribution source 21, distribution network 22 and indoor distribution antenna 23. part.

The first part: Indoor distributed signal source 21 includes: multiple RRUs 211, multi-frequency combiner 212, DC power supply device 213 and DC combiner 214, wherein:

RRU 221 for ^2nd Generation (2G) system, ^3rd Generation (3G) system, 4th ^Generation (4G) system and 5th ^Generation (5G) system , used for: providing communication signals of the indoor distribution system, for example including 2G/3G/4G/5G communication signals.

Multi-frequency combiner 212: combine the power of 2G/3G/4G signals to obtain a power combined signal.

DC power supply device 213: capable of providing DC power supply to the subsequent network. In the embodiment, the DC power supply device can be a gateway, which not only manages the working status of the active module inside the active antenna, but also has the capability of DC power supply. In the future, the gateway can also be integrated into the information source.

Wherein, the subsequent network includes a distribution network 22 and an indoor distribution antenna 23 .

DC combiner 214: a combiner with DC power supply capability, which combines the power combining signal of the multi-frequency combiner with the DC power supply signal sent from the DC power supply device to obtain a combined signal.

The second part: the distribution network 22 includes: a through-DC coupler 221 and a through-DC power divider 222 .

Through-DC coupler 221 : through different coupler configurations, a balanced power effect is achieved, so that the power reaching the antenna reaches a required level. The through-DC coupler is a coupler with a DC power supply capability.

DC power divider 222: the power divider can divide the energy of one input radio frequency signal into two or multiple outputs, and the DC power divider is a power divider with DC power supply capability.

The third part: indoor distribution antenna 23 includes: antenna and active module.

Antenna: radiate the power combined signal into a radio frequency signal;

Active module: It has the ability to take DC power through the inductor.

Indoor distributed signal source, distributed network and indoor distributed antenna, as well as various internal components, are connected by feeder lines, which can transmit both radio frequency signals and direct current.

After the 2G RRU, 3G RRU and 4G RRU are combined through the multi-frequency combiner, they are connected to the DC combiner together with the DC power supply device, the DC combiner is connected to the DC coupler, and the DC coupler is connected to the DC The power splitter is connected to the DC power splitter and then cascaded so that the energy of the signal is distributed to each antenna through the feeder.

In some embodiments, the above-mentioned combiner, coupler or power divider realizes the scheme of DC power supply as shown in Figure 3, Figure 4, and Figure 5, that is to say, the combiner has the schemes shown in Figure 3 to Figure 5 Three realization forms, the coupler has the three realization forms shown in Figure 3 to Figure 5, and the power divider has the three realization forms shown in Figure 3 to Figure 5, wherein:

The matching element 1 has the characteristics of passing AC and resisting DC, and the matching element 2 has the characteristic of passing DC and resisting AC. Indoor distributed sources send signals in the 800-2700 megahertz (MHz) frequency band. Since the matching element in channel 2 has AC blocking characteristics, the radio frequency signal is transmitted through channel 1. The DC signal sent by the DC power supply device is propagated through the channel 2, and the matching element 1 in the channel 1 has a DC blocking characteristic, and the DC signal cannot pass through the channel 1. The signal transmission medium is a feeder, which can transmit both radio frequency signals and direct current signals. The direct current is a zero-frequency signal and will not interfere with radio frequency signals. In the embodiment, the matching element 1 is a capacitive device (see FIG. 6 ), and the matching element 2 is an inductive device (see FIG. 6 ).

It can be seen from the above that this embodiment provides a passive indoor distribution system capable of DC power supply, and also provides a combiner, coupler and power divider capable of DC power supply.

Compared with the prior art, this embodiment has the following technical advantages: In the related art, by converting the radio frequency signal into electric energy to supply power for the wireless communication device, an additional power distribution module, a wireless charging module and a rechargeable battery are required, and the system complexity high and low charging efficiency. In this embodiment, the DC power supply capability is realized for the active module in the active antenna by introducing a passive device for passing DC power into the feeder network, which reduces the complexity of the system, and has high charging efficiency and stable system.

It should be understood that references to "one embodiment" or "an embodiment" throughout the specification mean that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in various embodiments of the present utility model, the size of the serial numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not be used by the present utility model. The implementation of the examples constitutes no limitation. The serial numbers of the above-mentioned embodiments of the utility model are only for description, and do not represent the advantages and disadvantages of the embodiments.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms of.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed to multiple network units; Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the utility model can be integrated into one processing unit, or each unit can be used as a unit separately, or two or more units can be integrated into one unit; the above The integrated unit can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above is only the embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present utility model. , should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (7)

1. A passive indoor distribution system, characterized in that the system comprises an indoor distribution signal source, a distribution network and an indoor distribution antenna; wherein:

the indoor distribution signal source is configured to provide various types of communication signals of an indoor distribution system, and synthesize the power of the communication signals of different types to obtain a power synthesized signal; providing direct current power supply capacity for the distribution network and the indoor distribution antenna, and performing power synthesis on the power synthesis signal and the direct current power supply signal to obtain a combined signal;

the distribution network is configured to transmit the power synthesis signal and the direct current supply signal in the combined signal to an indoor distribution antenna through different paths respectively;

the indoor distributed antenna is configured to be powered by the direct current power supply signal and radiate the power synthesis signal into a radio frequency signal;

the indoor distributed information source, the distribution network and the indoor distributed antenna are connected by a feeder line, and the feeder line is used for transmitting radio frequency signals and direct current.

2. The system of claim 1, wherein the indoor distributed source comprises: radio frequency remote unit RRU, multifrequency combiner, DC power supply unit and logical direct current combiner, wherein:

an RRU configured to provide different types of communication signals for an indoor distribution system;

the multi-frequency combiner is configured to perform power synthesis on different types of communication signals to obtain power synthesis signals;

a DC power supply configured to provide DC power capability to the distribution network and the indoor distribution antennas;

and the direct current combiner is configured to have direct current power supply capacity, and performs power combination on the power combination signal and the direct current power supply signal to obtain a combined signal.

3. The system of claim 1, wherein the distribution network comprises: a direct current coupler and a direct current power divider; wherein:

the direct current coupler is configured to have direct current power supply capacity, and transmits a power synthesis signal and a direct current power supply signal in the combined signal to the direct current power divider respectively;

and the direct current power divider is configured to have direct current power supply capacity and equally divide the energy of one path of the power synthesis signal into two or more paths for output.

4. The system of claim 1, wherein the indoor distributed antenna comprises: an antenna, an active module; wherein:

an antenna configured to radiate the power combined signal into a radio frequency signal;

the active module is configured to have direct current power taking capability through the inductor.

5. The system of claim 2, wherein the dc power supply device is a gateway, and the gateway manages the operating status of the active module inside the active antenna and has dc power supply capability.

6. The system of claim 5, wherein the gateway is integrated in the source.

7. A system according to any of claims 2 to 6, wherein feeder connections are used between the indoor distributed source, the distribution network and the various components within the indoor distributed antenna.