CN202121782U - Near-end node, far-end node, and indoor distribution system - Google Patents

Abstract

The utility model provides a near-end node, a remote node and an indoor distribution system, wherein: the remote node includes a remote integrated module, and a dual-polarized indoor distribution antenna is installed outside the remote integrated module, and the remote The integrated module is integrated with a first combination and branch module, a second combination and branch module, a remote first frequency converter and a remote second frequency converter, wherein the first combination and branch module is connected to the main feeder , the remote first frequency converter and the remote second frequency converter are respectively connected to the first combination and branching module through wiring, and the second combination and branching module is respectively connected to the remote second frequency conversion module The dual-polarized indoor distributed antenna is connected to the remote first frequency converter and the second combiner and branch module through wiring. The utility model reduces power loss, lowers failure rate, greatly reduces construction cost, and shortens engineering construction period.

Description

Near-end nodes, remote nodes and indoor distribution systems

technical field

The utility model relates to a near-end node, a far-end node and an indoor distribution system, belonging to the technical field of wireless communication.

Background technique

The indoor distribution system refers to a system for arranging a wireless network environment indoors. Most traditional indoor distribution systems based on 2G or 3G applications do not support Multiple Input Multiple Output (MIMO) technology. Therefore, the single-user throughput and cell throughput are low and cannot meet the requirements of Long Term Evolution (LTE). Evolution, referred to as: LTE) system capacity requirements.

After the introduction of LTE technology, the combination of MIMO technology and traditional indoor distribution system can be transformed on the basis of the existing indoor distribution system to meet the MIMO application requirements of LTE, and can achieve the purpose of reducing costs and shortening the construction period . Fig. 1 is a schematic structural diagram of an existing indoor distribution system based on MIMO technology. As shown in the figure, the indoor distribution system includes a remote node and a near-end node, and the remote node and the near-end node are connected through a main feeder for communication. This main feeder is used to transmit all system signals.

Wherein, the two-way LTE system signals sent by the wireless remote unit (Radio Remote Unit, abbreviated: RRU) connected to the base band unit (Base Band Unit, abbreviated: BBU) in the near-end node become two-way frequency signals after frequency conversion. The LTE signal is combined with non-LTE signals of other systems by the combiner and splitter module, and then sent to the remote node through the main feeder; the remote node separates the two LTE signals from the non-LTE signal through the combiner and splitter module One of the LTE signals is converted to the original frequency and transmitted to the dual-polarized indoor distribution antenna, and the other LTE signal is converted to the original frequency and then combined with the non-LTE signal through the combiner and splitter and then transmitted to the dual-polarization antenna. Polarized indoor distributed antenna, the dual-polarized indoor distributed antenna is a kind of MIMO antenna, the wireless signal is covered in the indoor environment through the dual-polarized indoor distributed antenna, so as to realize the compatible coverage of LTE system and non-LTE system. In the opposite direction, after the dual-polarized indoor distributed antenna receives LTE signals and non-LTE signals from the wireless space, the LTE signal is sent to the BBU using the reverse process above, and the non-LTE signal is sent to the corresponding non-LTE signal. system.

The problem in the prior art is that the modules in the near-end node and the remote node are deployed in a dispersed manner, and jumpers are needed to connect the modules. Due to the large loss and low stability of the jumpers, the indoor distribution The failure rate of the system increases, and it also increases the difficulty of design and installation and the power loss of the signal.

Utility model content

The utility model provides a near-end node, a far-end node and an indoor distribution system, which are used to overcome the shortcomings of high failure rate and large signal power loss caused by the distributed deployment mode.

On the one hand, the utility model provides a remote node, which includes a remote integrated module, the remote integrated module is equipped with a dual-polarization indoor distribution antenna, and the remote integrated module is integrated with a first combined circuit A splitting module, a second combining and splitting module, a remote first frequency converter and a remote second frequency converter, wherein the first combining and splitting module is connected to the main feeder, and the remote first frequency converter and The remote second frequency converter is respectively connected to the first combining and branching module through wiring, and the second combining and branching module is respectively connected to the remote second frequency converter and the first combining and branching module. The modules are connected by wires, and the dual-polarized indoor distribution antenna is respectively connected to the remote first frequency converter and the second combiner and splitter module by wires.

Another aspect of the utility model provides a near-end node, which includes a near-end integrated module, which integrates a first near-end frequency converter, a second near-end frequency converter, a combiner and splitter module, and an RRU , wherein the circuit combining and branching module is connected to the main feeder, the first near-end frequency converter and the second near-end frequency converter are respectively connected to the circuit combining and branching module through wiring, and the RRUs are respectively connected to the The near-end first frequency converter and the near-end second frequency converter are also connected to the BBU located outside the near-end node through wiring, and the combining and splitting module is also connected to the non-LTE The systems are connected by wires.

Another aspect of the present invention provides an indoor distribution system, including the above-mentioned remote node and the above-mentioned near-end node, wherein the remote node is connected to the near-end node through a main feeder.

The utility model unifies and integrates the function modules originally distributed in the integrated module, and the function modules are connected by wires instead of jumper wires, thereby reducing power loss and failure rate, and extremely The land reduces the construction cost and shortens the construction period.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

FIG. 1 is a schematic structural diagram of an existing indoor distribution system based on MIMO technology;

FIG. 2 is a schematic structural diagram of an embodiment of a remote node described in the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of the proximal node described in the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Fig. 2 is a schematic structural diagram of an embodiment of the remote node described in the present invention, as shown in the figure, the remote node includes a remote integrated module 10, and the exterior of the remote integrated module 10 is equipped with a dual-polarized indoor distributed antenna 11. The remote integrated module 10 is integrated with a first combining and splitting module 12, a second combining and splitting module 13, a remote first frequency converter 14 and a remote second frequency converter 15, wherein the The first circuit combining and branching module 12 is connected to the main feeder 30, the remote first frequency converter 14 and the remote second frequency converter 15 are respectively connected to the first circuit combining and branching module 12 through wiring, and the The second combining and branching module 13 is respectively connected to the remote second frequency converter 15 and the first combining and branching module 12 through wiring, and the dual-polarized indoor distribution antenna 11 is connected to the remote The first frequency converter 14 is connected to the second combiner and splitter module 13 through wires. Wherein, the wiring refers to the wiring implemented on the integrated module by using conductive materials such as metal or metal oxide.

Wherein, the first combining and branching module 12 is used to receive the combining signal from the main feeder 30, and separate it into two LTE signals and non-LTE signals according to different frequencies; on the contrary, the first combining and branching module 12 can also combine the two LTE signals and non-LTE signals into a combined signal and output it to the main feeder 30 .

The remote first frequency converter 14 is used to up-convert the LTE signal separated by the first combining and splitting module 12 to the original frequency; it can also convert the LTE terminal signal from the dual-polarized indoor distribution antenna 11 Down-conversion to LTE signal transmitted in the main feeder.

The second far-end frequency converter 15 is used to up-convert another LTE signal separated by the first combining and splitting module 12 to the original frequency; it can also down-convert the signal separated by the second combining and splitting module 13. Frequency conversion to LTE signal transmitted in the main feeder.

The second combining and splitting module 13 is used to combine the non-LTE signal separated by the first combining and splitting module 12 with the remote second frequency converter 15 to obtain after up-converting the LTE signal transmitted in the main feeder The LTE signal of the original frequency is combined; the wireless signal from the dual-polarized indoor distribution antenna 11 can also be separated into a non-LTE signal and an LTE signal transmitted in the main feeder for output to the remote second frequency converter 15 .

The dual-polarized indoor distribution antenna 11 is used to pass the wireless signal obtained after the remote first frequency converter 14 is up-converted and the wireless signal obtained after the second combining and splitting module 13 is combined through two polarization directions. Radiate into the wireless space to achieve compatible coverage of MIMO-based LTE systems and non-LTE systems; and can also receive wireless signals from the wireless space and output them to the remote first frequency converter 14 and the second combining and splitting module 13 respectively .

In addition, in order to prevent the remote integrated module 10 from affecting the radiation performance of the dual-polarized indoor distribution antenna 11, a metal reflector 16 may also be provided between the remote integrated module 10 and the dual-polarized indoor distributed antenna 11, to play an isolation role.

The remote node described in this embodiment integrates and integrates the original distributed functional modules into the remote integrated module 10, and these functional modules are connected by wires without jumper connections, thus maintaining the original Compatible coverage of LTE system and non-LTE system reduces power loss, lowers failure rate, greatly reduces construction cost, and shortens construction period.

Fig. 3 is a structural schematic diagram of an embodiment of a near-end node described in the present invention, as shown in the figure, the near-end node includes a near-end integration module 20, and the interior of the near-end integration module 20 is integrated with a first near-end frequency converter 21 , the second near-end frequency converter 22, the combination and branching module 23 and the RRU24, wherein the combination and branching module 23 is connected to the main feeder 30, the first near-end frequency converter 21 and the second near-end frequency converter 22 They are respectively connected to the combining and splitting modules 23 through wiring, and the RRUs 24 are respectively connected to the first near-end frequency converter 21 and the second near-end frequency converter 22, and are also connected to the BBU located outside the near-end node The combination and splitting module 23 is also connected with the non-LTE system outside the near-end node through the wiring.

Wherein, the RRU24 is used to receive the baseband signal sent by the BBU, and after processing the baseband signal through modulation, power amplification, etc., output two LTE radio frequency signals to the first near-end converter 21 and the second near-end converter 22 respectively; Specifically, two channels of LTE radio frequency signals may also be respectively received from the first near-end frequency converter 21 and the second near-end frequency converter 22 , and converted into baseband signals and output to the BBU after inverse processing.

The first near-end frequency converter 21 and the second near-end frequency converter 22 are respectively used to down-convert the two-way LTE radio frequency signals from the RRU24 to signals of different frequencies and then output them to the combining and splitting module 23; and also The LTE signal received from the combiner and demultiplexer module 23 can be up-converted into an LTE radio frequency signal and then output to the RRU24.

The combining and splitting module 23 is used to combine the two-way LTE signals from the near-end first frequency converter 21 and the near-end second frequency converter 22 with the non-LTE signals from the non-LTE system into a combined signal and output it to The main feeder 30; and the combined signal from the main feeder 30 can also be separated into two LTE signals and output to the near-end first frequency converter 21 and the near-end second frequency converter 22, and the non-LTE signal is separated and output to Non-LTE system. Wherein, the non-LTE system refers to one system or multiple systems other than the LTE system, such as 2G system, 3G system, wireless local area network (abbreviation: WLAN) system, etc.).

The near-end node described in this embodiment integrates the original distributed functional modules into the near-end integration module 20, and the functional modules are connected by wires without jumper connections, thereby maintaining the original Compatible coverage of LTE system and non-LTE system reduces power loss, lowers failure rate, greatly reduces construction cost, and shortens construction period.

In addition, after the remote nodes and the near-end nodes in the above embodiments are connected through the main feeder 30, a complete indoor distribution system can be formed. However, in practical applications, remote nodes are more suitable for applying the above-mentioned integrated structure, for the following reasons:

1. The near-end node is usually placed in the computer room, and the volume of the RRU is relatively large. If it is integrated with functional modules such as frequency converters, the overall volume will be even larger, which may cause inconvenience in management; while the remote node The nodes are usually placed outdoors, and the volume is very small. After integration, the volume is not large, and the management is more convenient;

2. The equipment in the computer room is basically active equipment, and the failure rate of each equipment is higher than that of passive equipment. If they are all integrated, the overall failure rate will increase a lot. If a module fails, the whole has to be replaced; and Only the frequency converter needs power supply in the remote node, so as long as the reliability of the frequency converter is ensured, the overall stability of the integrated remote node can be guaranteed;

3. The equipment in the computer room is in the same space, and problems such as management difficulty and signal loss are not too prominent, so the advantages of integration are relatively inconspicuous.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (4)

1. distant-end node; It is characterized in that; Comprise Remote Integrated Module; The outside of this Remote Integrated Module is equiped with the indoor distribution antenna of dual polarization; The inside of said Remote Integrated Module is integrated with first and closes road shunt module, second and close road shunt module, far-end first frequency converter and far-end second frequency converter, and wherein said first closes the road shunt module links to each other with main feeder, and said far-end first frequency converter and far-end second frequency converter close the road shunt module and link to each other through cabling with said first respectively; Said second closes the road shunt module closes the road shunt module with said far-end second frequency converter and said first respectively and links to each other through cabling, and the indoor distribution antenna of said dual polarization closes the road shunt module with said far-end first frequency converter and said second respectively and links to each other through cabling.

2. distant-end node according to claim 1 is characterized in that: also be provided with the metallic reflection plate between said Remote Integrated Module and the indoor distribution antenna of said dual polarization.

3. near-end node; It is characterized in that; Comprise the near-end integration module, the inside of this near-end integration module is integrated with near-end first frequency converter, near-end second frequency converter, closes road shunt module and RRU, and the wherein said road shunt module of closing links to each other with main feeder; Said near-end first frequency converter links to each other through cabling with the said road shunt module of closing respectively with near-end second frequency converter; Said RRU connects said near-end first frequency converter and near-end second frequency converter respectively, and the BBU outside with being positioned at said near-end node link to each other through cabling, and the said road shunt module of closing also links to each other through cabling with the non-LTE system that is positioned at said near-end node outside.

4. an indoor distributed system comprises claim 1 or 2 described distant-end nodes and the described near-end node of claim 3, it is characterized in that said distant-end node links to each other through main feeder with said near-end node.

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