CN215935113U

CN215935113U - Capacity type near-end machine device and frequency shift chamber subsystem

Info

Publication number: CN215935113U
Application number: CN202121756434.6U
Authority: CN
Inventors: 张宝会
Original assignee: Shaanxi Tianji Communication Technology Co ltd
Current assignee: Shaanxi Tianji Communication Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-03-01
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a capacity type near-end machine device and a frequency shift room subsystem, wherein the capacity type near-end machine device is integrated with a radio frequency remote unit to directly output a frequency shift frequency, so that the problems of EVM deterioration and stray interference of a near-end machine on signals in the traditional scheme are avoided, and the system cost is reduced. The combiner is provided with two combiners, the combiners are used for combining and splitting radio frequency signals and communication signals, and the combiners can be configured into two cells at the same time, so that the system capacity is increased. The capacity type near-end machine is connected with the signal source NR BBU and the two sets of DAS systems, the capacity type near-end machine inputs/outputs two paths of radio frequency signals and communication signals, the two paths of radio frequency signals and the communication signals are respectively connected into the two sets of DAS systems, and the two paths of radio frequency signals and the communication signals are respectively transmitted to the far-end machine through the DAS systems. The utility model realizes the coverage of 2 multiplied by 2MIMO 5G signals of two DAS systems.

Description

Capacity type near-end machine device and frequency shift chamber subsystem

Technical Field

The utility model belongs to the field of wireless communication, and particularly relates to a capacity type near-end machine device and a frequency shift room subsystem.

Background

Over 80% of the services in the 5G era occur in indoor scenes, so that indoor coverage is of great importance and becomes the core competitiveness of operators. Compared with 4G, the 5G service is carried in a higher frequency band, and the traditional DAS system does not support a 3.5GHz high frequency band, xTxR MIMO and visual operation and maintenance.

In order to provide 5G signal coverage on the original DAS in favor of the traditional DAS, a 5G frequency shift room subsystem is provided in the industry. The system deploys 5G signal coverage on the original DAS system in a frequency shift mode. The 5G frequency shift room subsystem consists of a near-end machine and a far-end machine, wherein the near-end machine is positioned at an information source and is used for shifting the 5G high-frequency band to the low-frequency band supported by the DAS system; the remote terminal is positioned at the covering end, the frequency band after frequency shift is restored to a 5G frequency band, and signal covering is provided through antenna radiation.

The 5G frequency shift room subsystem has the advantages of being capable of utilizing an old DAS system, simple in construction, easy in property coordination and the like. However, the near-end machine causes signal EVM deterioration and spurious interference in the frequency shifting process, and meanwhile, the system does not support capacity expansion and does not support multiple sets of DAS system access.

Disclosure of Invention

The utility model aims to solve the problems of EVM deterioration and stray interference caused by frequency shift of a near-end machine, no support of capacity expansion and no support of access of multiple sets of DAS systems in the prior art, and provides a capacity type near-end machine device and a frequency shift chamber subsystem.

In order to achieve the above object, a capacity-type near-end device includes an integration module, a management module, a first combiner and a second combiner;

the integrated module is connected with the first combiner and the second combiner; the integrated module adopts a radio frequency remote unit and is used for receiving baseband signals, converting the baseband signals into radio frequency signals and sending the radio frequency signals to the first combiner and the second combiner;

the first combiner and the second combiner are used for combining and shunting the radio frequency signals and the communication signals;

the management module is connected with the integrated module, the first combiner and the second combiner; and the management module is used for keeping data interaction with the remote terminal according to the signals of the integration module and the first and second combiners.

The management module comprises a control unit and a communication unit;

the control unit is used for controlling and managing the remote machine, summarizing monitoring information of the remote machine and reporting alarm information of the remote machine to the network management platform;

the communication unit realizes a communication function with the remote terminal.

The management module comprises a first management module and a second management module, the first management module is connected with the integrated module and the first combiner, and the second management module is connected with the integrated module and the second combiner.

The management module comprises a first management module and a second management module, the first management module is connected with the integration module and the first combiner, and the second management module is connected with the first management module and the second combiner.

And the management module and the integrated module are communicated by RS 485.

A volume type frequency shift indoor subsystem comprises a volume type near-end machine, a far-end machine and two sets of DAS systems;

the capacity type near-end machine is connected with the information source NR BBU and the two sets of DAS systems, the capacity type near-end machine inputs/outputs two paths of radio frequency signals and communication signals, and the two paths of radio frequency signals and the communication signals are respectively connected into the two sets of DAS systems;

and the two paths of radio frequency signals and the communication signals are respectively transmitted to the remote machine through the DAS.

The remote machine is used for converting the frequencies of two paths of radio frequency signals and 5G signals.

The remote terminal is internally provided with a communication module which is used for communicating with the near-end machine.

Compared with the prior art, the capacity type near-end machine device disclosed by the utility model avoids the problems of EVM deterioration and stray interference of the near-end machine to signals in the traditional scheme by integrating a mode of directly outputting frequency shift frequency by the radio frequency remote unit, and simultaneously reduces the system cost. The combiner is provided with two combiners, the combiners are used for combining and splitting radio frequency signals and communication signals, and the combiners can be configured into two cells at the same time, so that the system capacity is increased.

The capacity type frequency shift room subsystem is connected with an information source NR BBU and two sets of DAS systems through a capacity type near-end machine, the capacity type near-end machine inputs/outputs two paths of radio frequency signals and communication signals, the two paths of radio frequency signals and the communication signals are respectively connected into the two sets of DAS systems, and the two paths of radio frequency signals and the communication signals are respectively transmitted to a far-end machine through the DAS systems. The utility model realizes the coverage of 2 multiplied by 2MIMO 5G signals of two DAS systems.

Drawings

Fig. 1 is a volumetric proximal machine device provided in example 1;

FIG. 2 is a view of a volumetric proximity device provided in example 2;

FIG. 3 is a view of a volumetric proximal machine device provided in example 3;

FIG. 4 is a schematic diagram of a management module of the present invention;

FIG. 5 is a schematic diagram of a frequency shift chamber subsystem according to the present invention.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a volumetric near-end device, which can realize access of two sets of DAS by means of a built-in remote radio unit. The capacity type near-end machine is composed of an integrated module, a management module, a first combiner and a second combiner.

The integrated module is a radio remote unit and realizes the conversion function of baseband signals and radio frequency signals. The integrated module comprises four radio frequency channels, namely CH1, CH2, CH3 and CH4, wherein the frequency output by the radio frequency channels CH1 and CH3 is IF1, and the frequency output by the radio frequency channels CH2 and CH4 is IF 2.

Further, the integration module may be 4T4R pRRU;

further, the channels CH1 and CH2 of the integrated module are configured as a group, and the channels CH3 and CH4 are configured as a group, and are respectively butted with the first combiner and the second combiner;

further, four channels of the integrated module can be configured as a cell; it is also possible to configure the channels CH1 and CH2 as one cell and the channels CH3 and CH4 as another cell.

The management module realizes the communication with the remote machine in the system, the control and management of the remote machine, and the functions of the monitoring information collection of the remote machine and the report of the alarm information.

The management module comprises a control unit and a communication unit, wherein the control unit realizes the control and management of the remote machine in the system, the summarization of the monitoring information of the remote machine and the report of the alarm information of the remote machine to the network management platform; wherein the communication unit implements a communication function with the remote machine.

The first combiner is a cavity filter and realizes the functions of combining and splitting the IF1 signal, the IF2 signal and the communication signal. Specifically, the method comprises the following steps: in the downlink direction, an IF1 signal is received from a channel CH1 of the integrated module, an IF2 signal is received from a channel CH2 of the integrated module, a communication unit of the management module receives a communication signal, and then the IF1 signal, the IF2 signal and the communication signal are combined and fed into the DAS system; in the upstream direction, IF1 signals, IF2 signals, and communication signals are received from the DAS system, and then the respective signals are branched to the channel CH1 of the integrated module, the channel CH2 of the integrated module, and the communication unit of the management module.

The second combiner is a cavity filter, and realizes the functions of combining and splitting the IF1 signal, the IF2 signal and the communication signal. Specifically, the method comprises the following steps: in the downlink direction, an IF1 signal is received from a channel CH3 of the integrated module, an IF2 signal is received from a channel CH4 of the integrated module, a communication unit of the management module receives a communication signal, and then the IF1 signal, the IF2 signal and the communication signal are combined and fed into the DAS system; in the upstream direction, IF1 signals, IF2 signals, and communication signals are received from the DAS system, and then the respective signals are branched to the channel CH3 of the integrated module, the channel CH4 of the integrated module, and the communication unit of the management module.

The integrated module is connected with the management module, the first combiner and the second combiner.

The integrated module is connected with the control unit of the management module, and RS 485 communication is adopted.

The channels CH1 and CH2 of the integrated module are connected with the first combiner; the channels CH3 and CH4 of the integrated module are connected to the second combiner.

The management module is connected with the first combiner and the second combiner. Specifically, the communication units of the management module are respectively connected to the first combiner and the second combiner.

The first combiner and the second combiner are in butt joint with two different DAS systems.

Referring to fig. 2, the present invention provides another volumetric near-end device, which comprises an integration module, a first management module, a second management module, a first combiner, and a second combiner.

The near-end device is different from the former device in that a management module is added. The first management module and the second management module are communicated with the integrated module through RS 485.

The first management module is in charge of butt joint with the first combiner, management, alarm reporting and monitoring information gathering of a set of remote machines in the DAS, communication with the remote machines and other functions.

The second management module is in charge of butt joint with the second combiner, management, alarm reporting and monitoring information gathering of a remote machine in another DAS system, communication with the remote machine and other functions.

Referring to fig. 3, the present invention provides another volumetric near-end device, which comprises an integrated module, a first management module, a second management module, a first combiner, and a second combiner.

The difference between the near-end device and the former device is that the second management module is not directly connected to the integrated module through the RS 485.

First management module passes through RS 485 lug connection in integration module, and second management module passes through RS 485 lug connection in first management module.

The integrated module, the first management module and the second management module are communicated in an RS 485 bus mode, and a hand-in-hand serial connection mode is adopted in a networking mode.

Referring to fig. 5, the present invention provides a volumetric frequency shift indoor subsystem comprising a volumetric near-end machine, a far-end machine, and two DAS systems.

The capacity type near-end machine realizes output of two paths of IF1, IF2 and communication signals, wherein one path of IF1, IF2 and communication signals are fed into one DAS system, and the other path of IF1, IF2 and communication signals are fed into two other DAS systems.

The capacity type near-end machine is positioned at the information source and is respectively butted with the NR BBU and the two sets of DAS systems.

And the capacity type near-end machine is butted with the NR BBU to realize the conversion of the baseband signal and the radio frequency signal. Specifically, the method comprises the following steps: specifically, the downlink direction receives a baseband signal from the BBU, and then converts the baseband signal into radio frequency signals IF1 and IF2 for output; in the upstream direction, the radio frequency signals IF1 and IF2 are converted to baseband signals.

And the capacity type near-end machine is in butt joint with the DAS system to realize the access of the two sets of DAS systems. Specifically, the downlink capacity type near-end machine feeds two paths of output IF1, output IF2 and communication signals into two sets of DAS systems respectively; the upstream capacity type near-end unit receives the IF1, the IF2, and the communication signal from the two-channel DAS system, respectively.

The remote machine realizes conversion of IF1/IF2 signal and 5G signal frequency. Specifically, the downlink direction frequency-converts the IF1 signal and the IF2 signal to 5G signal frequencies, respectively, providing 2 × 2MIMO signal coverage by antenna radiation; and the two paths of 5G signals are respectively converted into IF1 frequency and IF2 frequency in the uplink direction and transmitted to the capacity type near-end machine through the DAS system.

The remote terminal is internally provided with a communication module and is communicated with the near-end machine through the communication module.

The remote machine is located at the covered end and interfaces with the DAS system. Specifically, the downstream direction receives IF1, IF2, and communication signals from the DAS system; the upstream direction feeds IF1, IF2, and communication signals into the DAS system.

The DAS system is located in the middle of the volume type frequency shift indoor subsystem and is responsible for being in butt joint with a volume type near-end machine and a far-end machine. The DAS system mainly comprises passive devices such as a coupler, a power divider, a radio frequency feed cable and the like.

Claims

1. A capacity type near-end machine device is characterized by comprising an integrated module, a management module, a first combiner and a second combiner;

2. The volumetric near-end machine arrangement of claim 1, wherein the management module comprises a control unit and a communication unit;

3. The volumetric near-end device of claim 1, wherein the management module comprises a first management module and a second management module, the first management module connects the integration module and the first combiner, and the second management module connects the integration module and the second combiner.

4. The apparatus of claim 1, wherein the management module comprises a first management module and a second management module, the first management module connects the integration module and the first combiner, and the second management module connects the first management module and the second combiner.

5. The volumetric proximity device of claim 1, wherein the management module communicates with the integration module using RS 485.

6. A volume type frequency shift indoor subsystem is characterized by comprising a volume type near-end machine, a far-end machine and two sets of DAS systems;

7. The system as claimed in claim 6, wherein the remote unit is adapted to convert the frequencies of the two rf signals and the 5G signal.

8. The system as claimed in claim 6, wherein the remote unit has a communication module built therein for communicating with the near-end unit.