阅读说明：本技术 一种移动网络室内信号覆盖系统 (Mobile network indoor signal coverage system ) 是由 杨新胜 高鹏 于 2021-08-20 设计创作，主要内容包括：本发明提供一种移动网络室内信号覆盖系统,包括接入单元AU、扩展单元EU和覆盖单元RU；其中,接入单元AU的一端通过馈线电缆与外界基站连接,另一端与扩展单元EU通过馈线电缆连接,扩展单元EU与覆盖单元RU之间通过馈电功分器和/或馈电耦合器连接；系统组网时,馈线分路时采用馈电型耦合器或者功分器的方式,把信号传递给支路的同时,也将电源传递给下一个覆盖单元RU,让其正常工作,实现信号放大覆盖功能。从而解决了传统微分布系统扩展单元单端口支持一个远端RU的问题,解决了扩展单元与RU数量不匹配的矛盾。让微分布系统组网更加简单灵活。节约了馈线长度,同时使得施工更加方便,快捷,高效。(The invention provides a mobile network indoor signal coverage system, which comprises an access unit AU, an expansion unit EU and a coverage unit RU, wherein the access unit AU is used for receiving an access signal; one end of the access unit AU is connected with an external base station through a feeder cable, the other end of the access unit AU is connected with the expansion unit EU through a feeder cable, and the expansion unit EU is connected with the coverage unit RU through a feed power divider and/or a feed coupler; when the system is networked, the feeder line branches, the feed type coupler or the power divider is adopted, signals are transmitted to the branches, and meanwhile, the power supply is transmitted to the next covering unit RU, so that the next covering unit RU works normally, and the signal amplification covering function is realized. Therefore, the problem that a single port of an expansion unit of a traditional micro distribution system supports one remote RU is solved, and the contradiction that the number of the expansion unit is not matched with that of the RUs is solved. And the networking of the micro distribution system is simpler and more flexible. The length of the feeder line is saved, and meanwhile, construction is more convenient, rapid and efficient.)

1. A mobile network indoor signal coverage system is characterized by comprising an access unit AU, an extension unit EU and a coverage unit RU; one end of the access unit AU is connected with an external base station through a feeder cable, the other end of the access unit AU is connected with the expansion unit EU through a feeder cable, and the expansion unit EU is connected with the coverage unit RU through a feed power divider and/or a feed coupler.

2. A mobile network indoor signal coverage system as claimed in claim 1, wherein the input terminal of the feed power divider is connected to the output terminal of the extension unit EU through a feeder cable; and each output end of the feed power divider is respectively connected with the covering unit RU.

3. The system of claim 2, wherein the power divider comprises a passive power divider and an active power divider.

4. The system of claim 3, wherein the active power divider is one of a two-power divider, a three-power divider, and a four-power divider.

5. The indoor signal coverage system of claim 1, wherein when the extension unit EU and the coverage unit RU are connected through the feeding coupler, the input terminal of the feeding coupler is connected to the output terminal of the extension unit EU for inputting signals and power; the output end of the feed coupler is connected with the covering unit RU and provides signals and power supply for the covering unit RU.

6. A mobile network indoor signal coverage system as claimed in claim 1, wherein the access unit AU and the extension unit EU each comprise an AGC automatic gain unit.

7. The system of claim 1, wherein each extension unit EU is configured with eight maximum coverage units RU.

8. The system of claim 7, wherein each port feed of the extension end and EU supports at least two RUs.

9. A mobile network indoor signal coverage system as claimed in claim 1 wherein the feeder cable is laid in a cross-over or longitudinal manner.

10. A mobile network indoor signal coverage system as claimed in claim 9 wherein the feeder cable carries radio frequency signals and electrical signals.

Technical Field

The invention relates to the technical field of wireless communication, in particular to an indoor signal coverage system of a mobile network.

Background

Indoor mobile accounts for about 70% of the whole mobile network service, indoor signal quality becomes a key factor for operators to acquire competitive advantages and serves as effective supplementary coverage of outdoor macro stations, an indoor distribution system is a scheme for mainly solving network coverage, network capacity and network quality of mobile communication networks in buildings aiming at indoor user groups, and the distribution design of an indoor antenna feeder system is one of main factors influencing indoor communication quality, so that the design of the indoor coverage scheme is of great importance for improving network performance.

The current indoor mobile network coverage mode is many, and there are distributed pico base station, extended base station, high-power base station + passive antenna feeder distributed DAS, optical fiber repeater + passive antenna feeder DAS, MDAS optical fiber distribution system and other schemes. In recent years, micro distribution systems have been developed, and are mainly applied to scenes with small area and small traffic volume. It can support multi-network and multi-band system, such as one or combination of multiple bands of 700MHz, 800MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, 2600MHz and 3500 MHz. The system usually adopts a three-level architecture, an access unit AU, an extension unit EU and a coverage unit RU. The common ratio is 1:1:4 or 1:1: 8. The working principle is that AU is connected with base station radio frequency port through antenna, and converts radio frequency signal into digital optical signal through A/D conversion, and sends it to EU, EU converts digital optical signal from AU into electric signal, and sends it to RU, and at the same time combines the signals from RU and sends them to AU, but EU only supports 8 optical fiber interfaces, RU converts signal from EU into radio frequency signal, and amplifies it to realize signal covering of target area. The whole system only gets electricity at the extended unit EU, the access unit AU and the coverage unit RU work by utilizing a radio frequency feeder, and the extended unit EU and the coverage unit RU form a star-shaped networking.

However, it is often the case that multiple coverage units RU are required in the same direction in a coverage site. Especially, in some places with inconvenient construction, the difficulty of running a plurality of radio frequency cables is great. If the EU cascade mode is adopted, the problem of less wiring can be solved, but the condition that power is required to be respectively taken at a plurality of places can occur, the difficulty of site construction is increased, and the power utilization risk is increased; therefore, a solution for an indoor coverage system is needed to solve two contradictory problems in the prior art.

Disclosure of Invention

In order to solve the existing problems, the invention provides a mobile network indoor signal coverage system, which is characterized in that a feed-type coupler or a power divider is added between an extension unit and a coverage unit, so that a signal is transmitted to a branch circuit, and meanwhile, a power supply is also transmitted to a next coverage unit RU, so that the next coverage unit RU can work normally, and the signal amplification coverage function is realized. Therefore, the problem that a single port of an expansion unit of a traditional micro distribution system supports one remote RU is solved, and the contradiction that the number of the expansion unit is not matched with that of the RUs is solved.

In order to achieve the above object, the present invention provides a mobile network indoor signal coverage system, which includes an access unit AU, an extension unit EU, and a coverage unit RU; one end of the access unit AU is connected with an external base station through a feeder cable, the other end of the access unit AU is connected with the expansion unit EU through a feeder cable, and the expansion unit EU is connected with the coverage unit RU through a feed power divider and/or a feed coupler.

Preferably, the input end of the feed power divider is connected with the output end of the extension unit EU through a feeder cable; and each output end of the feed power divider is respectively connected with the covering unit RU.

Preferably, the feed power divider includes a passive power divider and an active power divider.

Preferably, the active power divider is one of a two-power divider, a three-power divider and a four-power divider.

Preferably, when the extension unit EU and the coverage unit RU are connected by the feeding coupler, an input terminal of the feeding coupler is connected to an output terminal of the extension unit EU for inputting signals and power; the output end of the feed coupler is connected with the covering unit RU and provides signals and power supply for the covering unit RU.

Preferably, the access unit AU and the extension unit EU each include an AGC automatic gain unit.

Preferably, each extension unit EU configures eight coverage units RU at maximum.

Preferably, each port feed of the extension and EU supports at least two coverage units RU.

Preferably, the feeder cable is laid in a through pipe transverse line mode or a longitudinal through pipe transverse line mode.

Preferably, the feeder cable carries both radio frequency signals and electrical signals.

The invention has the beneficial effects that: the invention provides a mobile network indoor signal coverage system, which comprises an access unit AU, an expansion unit EU and a coverage unit RU, wherein the access unit AU is used for receiving an access signal; one end of the access unit AU is connected with an external base station through a feeder cable, the other end of the access unit AU is connected with the expansion unit EU through a feeder cable, and the expansion unit EU is connected with the coverage unit RU through a feed power divider and/or a feed coupler; when the system is networked, the feeder line branches, the feed type coupler or the power divider is adopted, signals are transmitted to the branches, and meanwhile, the power supply is transmitted to the next covering unit RU, so that the next covering unit RU works normally, and the signal amplification covering function is realized. Therefore, the problem that a single port of an expansion unit of a traditional micro distribution system supports one remote RU is solved, and the contradiction that the number of the expansion unit is not matched with that of the RUs is solved. And the networking of the micro distribution system is simpler and more flexible. The length of the feeder line is saved, and meanwhile, construction is more convenient, rapid and efficient.

Drawings

FIG. 1 is a prior art architecture diagram;

FIG. 2 is a prior art architecture diagram;

FIG. 3 is a prior art architecture diagram;

FIG. 4 is a system architecture diagram of the present invention;

fig. 5 is a schematic diagram of the system arrangement of the present invention.

The main element symbols are as follows:

1. an access unit AU;

2. an extension unit EU; 21. an AGC automatic gain unit;

3. a covering unit RU;

4. a feed power divider;

5. a feed coupler.

Detailed Description

In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.

In the following description, details of general examples are given to provide a more thorough understanding of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. It should be understood that the specific embodiments are illustrative of the invention and are not to be construed as limiting the invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

To solve the defect that the traditional micro distribution system can only realize star networking, please refer to fig. 1-3, which show the star networking mode in the prior art and the architecture of EU cascade of expansion units which can only be cascaded. We consider a method in which each path can have multiple RUs after the extension unit is split. The problem that the contradiction of on-site signal coverage cannot be met due to the fact that the number of on-site coverage point positions is not matched with the number of branch ports of the expansion unit is solved to the greatest extent. When the number of coverage point positions of the traditional micro distribution system is larger than the number of output ports of the EU of the expansion unit, the EU of the expansion unit needs to be increased, but the problem of taking power at multiple places is caused. The original EU unit power supply capacity is designed to support a plurality of remote unit RUs per port. When the system is networked, the feeder line branches, the feed type coupler or the power divider is adopted, signals are transmitted to the branches, and meanwhile, the power supply is transmitted to the next covering unit RU, so that the next covering unit RU works normally, and the signal amplification covering function is realized. Therefore, the problem that a single port of an expansion unit of a traditional micro distribution system supports one remote RU is solved, and the contradiction that the number of the expansion unit is not matched with that of the RUs is solved. And the networking of the micro distribution system is simpler and more flexible. The length of the feeder line is saved, and meanwhile, construction is more convenient, rapid and efficient.

The present invention provides a mobile network indoor signal coverage system, please refer to fig. 4-5, which includes an access unit AU1, an extension unit EU2 and a coverage unit RU 3; one end of the access unit AU is connected with an external base station through a feeder cable, the other end of the access unit AU is connected with the expansion unit EU through a feeder cable, and the expansion unit EU is connected with the coverage unit RU through a feed power divider 4 and/or a feed coupler 5. An antenna is arranged to receive downlink radio frequency signals of one or more frequency band communication systems of a base station, and a radio frequency feeder is transmitted to an AU; connecting optical fibers from an outdoor base station to an access unit AU, accessing the optical fibers to an expansion unit EU through a feeder cable, simultaneously performing signal expansion on an expansion unit, accessing an input end of a feed power divider, and then performing signal and current division through the feed power divider, wherein each port can support the capacity of not less than two RUs. In the specific implementation, the access unit AU and the coverage unit RU of the micro-distribution system are designed according to a typical scene, and the gains of the AU and the RU are usually between 50 dB and 65 dB. AU downlink power is between-20 dBm and 10 dBm. The far-end RU downstream power is between 10dBm and 23 dBm. AU, RU has AGC automatic gain adjustment function. The network can be flexibly changed when the network is arranged indoors, and single-port-to-multi-output arrangement between the extended unit EU and the coverage unit RU is realized.

In this embodiment, the input end of the feed power divider is connected to the output end of the extension unit EU through a feeder cable; and each output end of the feed power divider is respectively connected with the covering unit RU. The feeder cable is laid in a mode of laying transverse wires or longitudinally laying through pipes, and whether the feeder cable is buried in a wall or outdoors is selected according to specific laying environments. The feeder cable transmits radio frequency signals and power.

In this embodiment, the feeding power divider includes a passive power divider and an active power divider. The passive power divider has the main characteristics of stable work, simple structure and no noise, so the passive power divider is suitable for being used in office places, but has the defect of large access loss and is not practical for living houses and the like; the active power divider has a gain function and high isolation, and two power dividers, three power dividers and four power dividers are arranged at the output port; impedance matching can be achieved perfectly, and signal transmission can be performed at the center frequency with little loss. For example, after 2/3/4/5G + WLAN signals are combined, they may simultaneously enter the power divider for feeding and then output.

In this embodiment, when the extension unit EU and the coverage unit RU are connected by the feeding coupler, the input terminal of the feeding coupler is connected to the output terminal of the extension unit EU for inputting signals and power; the output end of the feed coupler is connected with the covering unit RU and provides signals and power supply for the covering unit RU. When the feed coupler is adopted, the feed coupler and the expansion unit are directly connected, the selection of directly getting the electricity and branching is ensured, and the output interface of the expansion unit EU is provided with a plurality of output interfaces, so that the mode of directly connecting the covering unit RU can be selected according to the situation for each port, or the mode of connecting the feed power divider with the selection line and then connecting the covering units RU with the selection line at the feed power divider, or the mode of connecting the feed coupler with the feeding coupler and then connecting the covering units RU with the selection line is judged according to the specific situation of the implementation environment, the expansion unit is electrified, the feed line feeds the AU and RU to work, and the system completes the distributed covering of the indoor mobile network signals.

Wherein, the access unit AU and the expansion unit EU both comprise an AGC automatic gain unit 21; the impedance can be self-matched and adjusted to achieve the optimal connection effect and signal output effect; preferably, each extension unit EU configures eight coverage units RU at maximum.

Examples

The access unit AU and the coverage unit RU of the micro-distribution system are designed according to a typical scene, and the gains of the access unit AU and the coverage unit RU are between 50-65 dB. The downlink power of the access unit AU is between-20 dBm and 10 dBm. The remote coverage unit RU downlink power is between 10dBm and 23 dBm. The access unit AU, the cover unit RU has AGC automatic gain adjustment function; and setting an antenna to receive downlink radio frequency signals of one or more frequency band communication systems of the base station, and transmitting the downlink radio frequency signals to the AU by a radio frequency feeder. Designing a coverage area of a target area such as a cell, a unit building or a family complex, selecting the number of feed power dividers and/or feed couplers according to a house structure, and configuring the number of antennas, expansion units EU and coverage units RU; radio frequency feeder lines are adopted among the access unit AU, the expansion unit EU and the coverage unit RU to transmit radio frequency signals and power supplies, and a feed power divider or a feed coupler is accessed between the expansion unit EU and the coverage unit RU to realize that a single port of the expansion unit EU is stably accessed into a plurality of coverage units RU; and the extension unit EU is electrified, the feeder feeds power to the access unit AU and the coverage unit RU to work, and the system finishes the distributed coverage of the indoor mobile network signals.

The invention has the technical effects that:

the original EU unit power supply capacity is designed to support a plurality of remote unit RUs per port. When the system is networked, the feeder line branches, the feed type coupler or the power divider is adopted, signals are transmitted to the branches, and meanwhile, the power supply is transmitted to the next covering unit RU, so that the next covering unit RU works normally, and the signal amplification covering function is realized. Therefore, the problem that a single port of an expansion unit of a traditional micro distribution system supports one remote RU is solved, and the contradiction that the number of the expansion unit is not matched with that of the RUs is solved. And the networking of the micro distribution system is simpler and more flexible. The length of the feeder line is saved, and meanwhile, construction is more convenient, rapid and efficient.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.