CN213072658U

CN213072658U - System for realizing 4X4 MIMO based on indoor distribution system

Info

Publication number: CN213072658U
Application number: CN202022189212.2U
Authority: CN
Inventors: 李雪花; 薛晨杨; 李奎盛; 王长明; 朱玉波
Original assignee: Shaanxi Tianji Communication Technology Co ltd
Current assignee: Shaanxi Tianji Communication Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-04-27
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a system based on room divides system to realize 4X4 MIMO, the utility model discloses a 5G sharing information source basic station combines the room of operator to divide the unit to be in the same place, realizes the information source sharing to subsequent access unit, extension unit and cover unit pass through near-end equipment and insert the signal, can both realize the sharing, and greatly reduced operator cost realizes winning altogether.

Description

System for realizing 4X4 MIMO based on indoor distribution system

Technical Field

The utility model belongs to the field of communication, concretely relates to system based on room divides system to realize 4X4 MIMO.

Background

The traditional indoor distribution system (DAS) originates from the 2G/3G/4G era, mainly solves the problem of weak coverage of indoor signals, and is oriented to the 4X4 MIMO indoor network evolution of the 5G era, and the traditional indoor distribution system has the following three main problems:

1) compared with the frequency band of the 2G/3G/4G era, the 5G macro base station signal deployed in the high frequency band faces a larger link loss problem when the indoor scene is covered through the wall, so that the indoor deep coverage is insufficient. Compared with a 2G/3G/4G frequency band base station information source, the telecom-connected 5G N78 frequency band outdoor signal has overlarge loss in the passive indoor distribution, is about 10 times larger than 4G and has large base station information source consumption.

2) Difficulty in direct replacement of devices: many components in the traditional indoor distribution system such as a combiner, a power divider and the like do not support 3.3-3.6GHz or have too high cost and great replacement difficulty.

3) The indoor coverage mode of outdoor 5G base station signal transmission is more difficult than that of 2G/3G/4G, 4X4 MIMO requirements are provided in 5G rooms, and active digital products are mainly adopted for bearing; the passive room can only be used as a supplementary means for low-cost and rapid deployment in a scene or an area with low capacity requirement.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide a system based on room divides the system to realize 4X4 MIMO, can adopt novel room to divide the scheme through changing traditional DAS network construction mode, realize that the digitization is built the net.

In order to achieve the purpose, the utility model comprises an access unit, an extension unit and a covering unit, wherein the access unit is connected with the extension unit, and the extension unit is connected with the covering unit;

the access unit comprises at least two groups of near-end equipment, all the near-end equipment are connected with corresponding information source signals, and all the near-end equipment are connected with a 5G shared information source base station;

the expansion unit comprises a plurality of chamber division units, each chamber division unit is connected with the near-end equipment of the corresponding information source, and all the chamber division units are connected with the corresponding power division coupling units;

the covering unit comprises a plurality of remote devices, and all the remote devices are connected with the corresponding power division coupling units.

Both the near-end device and the far-end device are 2X2 MIMO.

The 5G shared source base station is distributed with an N78 frequency band, and the frequency is 3.3-3.6 GHz.

The remote device is integrated with a multi-frequency and multi-mode antenna.

Compared with the prior art, the utility model discloses a 5G sharing information source basic station combines the room of operator to divide the unit to be in the same place, realizes the information source sharing to subsequent access unit, extension unit and the cover unit pass through near-end equipment access signal, can both realize the sharing, and greatly reduced operator cost realizes the win-win.

Drawings

Fig. 1 is a system block diagram of the present invention.

The system comprises an access unit 1, an extension unit 2, an extension unit 3, a coverage unit 4, an information source signal 5, a shared information source base station 5G and a shared information source base station 5G to 1, near-end equipment 2 to 1, an indoor distribution unit 2 to 2, a power distribution coupling unit 3 to 1 and far-end equipment.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, the utility model comprises an access unit 1, an extension unit 2 and a covering unit 3, wherein the access unit 1 is connected with the extension unit 2, and the extension unit 2 is connected with the covering unit 3; the access unit 1 comprises at least two groups of near-end equipment 1-1, all the near-end equipment 1-1 are connected with corresponding information source signals 4, and all the near-end equipment 1-1 are connected with a 5G shared information source base station 5; the expansion unit 2 comprises a plurality of chamber sub-units 2-1, each chamber sub-unit 2-1 is connected with the near-end equipment 1-1 corresponding to the information source, and all the chamber sub-units 2-1 are connected with the corresponding power division coupling units 2-2; the covering unit 3 comprises a plurality of remote devices 3-1, and all the remote devices 3-1 are connected with the corresponding power division coupling units 2-2.

The 5G information source is provided by a 5G telecommunication/Unicom shared base station, and the telecommunication 2/3/4G information source and the Unicom 2/3/4G information source are respectively provided by a telecommunication and Unicom 2/3/4G base station; the near-end equipment receives a signal of a base station information source through the access antenna during downlink, relays and amplifies the signal and transmits the signal to the far-end equipment, and receives a signal of the far-end equipment through the extension unit during uplink, relays and amplifies the signal and transmits the signal to the base station through the access antenna; the telecommunication/Unicom room is used for distributing signals of the near-end equipment to the far end in downlink and outputting the far-end signals to the near end in combined mode in uplink; the power division coupling is used for signal distribution and combination; the near-end equipment is used for receiving the indoor sub-signals and transmitting the indoor sub-signals to the covering antenna after relay amplification when the near-end equipment is in a downlink state, the covering antenna is used for realizing communication between the covering unit and the terminal, and the near-end equipment is used for receiving the terminal signals and transmitting the indoor sub-signals to the indoor sub-equipment after relay amplification when the near-end equipment.

The frequency band of telecom and Unicom 5G N78 is allocated to 3.3-3.6GHz, the near-end device supports 300MHz bandwidth of the frequency band in downlink, and two operators can share any 100MHz bandwidth in order to save cost. Meanwhile, the near-end equipment receives a base station 5G signal in a downlink manner, and the frequency of the 5G frequency band 3.3-3.6GHz signal is converted into an intermediate frequency signal through down conversion and transmitted to the indoor sub-unit; the intermediate frequency signal transmitted by the uplink receiving room sub-unit of the near-end equipment is converted into a 5G frequency band 3.3-3.6GHz signal by up-conversion and is transmitted to the base station. The indoor sub-units transmit intermediate frequency signals, so that the indoor sub-cost of an operator is greatly reduced.

The remote equipment receives the intermediate frequency signal transmitted by the indoor sub-unit in a downlink way through the telecommunication/Unicom indoor sub-unit, and the intermediate frequency signal is converted to a 5G frequency band 3.3-3.6GHz and transmitted to the terminal through up-conversion; the uplink receives a 5G signal transmitted by the terminal, and the 5G frequency band is converted into an intermediate frequency signal in a frequency range of 3.3-3.6GHz through down conversion and transmitted to the indoor sub-unit. The indoor sub-units transmit intermediate frequency signals, so that the indoor sub-cost of an operator is greatly reduced.

The near-end equipment and the far-end equipment are both 2X2 MIMO, the telecommunication near-end equipment A and the communication near-end equipment B are combined to realize access 4X4 MIMO, and the telecommunication far-end equipment A and the communication far-end equipment B are combined to realize coverage 4X4 MIMO.

Claims

1. A system for realizing 4X4 MIMO based on an indoor subsystem is characterized by comprising an access unit (1), an extension unit (2) and a coverage unit (3), wherein the access unit (1) is connected with the extension unit (2), and the extension unit (2) is connected with the coverage unit (3);

the access unit (1) comprises at least two groups of near-end equipment (1-1), all the near-end equipment (1-1) are connected with corresponding information source signals (4), and all the near-end equipment (1-1) are connected with a 5G shared information source base station (5);

the expansion unit (2) comprises a plurality of room sub-units (2-1), each room sub-unit (2-1) is connected with the near-end equipment (1-1) of the corresponding information source, and all the room sub-units (2-1) are connected with the corresponding power division coupling units (2-2);

the covering unit (3) comprises a plurality of remote devices (3-1), and all the remote devices (3-1) are connected with the corresponding power division coupling units (2-2).

2. The system for implementing 4X4 MIMO based on indoor subsystem as claimed in claim 1, wherein the near end device (1-1) and the far end device (3-1) are both 2X2 MIMO.

3. The system of claim 1, wherein the 5G shared source base station (5) is assigned to N78 frequency bands at 3.3-3.6 GHz.

4. The system of claim 1, wherein the remote device (3-1) is integrated with a multi-frequency and multi-mode antenna.