CN215871861U - Radio frequency remote unit and access network equipment - Google Patents
Radio frequency remote unit and access network equipment Download PDFInfo
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- CN215871861U CN215871861U CN202122087151.3U CN202122087151U CN215871861U CN 215871861 U CN215871861 U CN 215871861U CN 202122087151 U CN202122087151 U CN 202122087151U CN 215871861 U CN215871861 U CN 215871861U
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Abstract
The application provides a radio frequency remote unit and an access network device, relates to the field of communication, and can solve the problem of high deployment and operation and maintenance cost. The radio frequency remote unit includes: the antenna comprises an active device, a passive device and N first antennas, wherein the passive device comprises a first end and N second ends, N is a positive integer and is more than or equal to 2; the first end of the passive device is in signal connection with the active device; the ith second end of the passive device is in signal connection with the ith first antenna; i is a positive integer, and i is more than or equal to 1 and less than or equal to N.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a radio frequency remote unit and an access network device.
Background
Currently, active distributed systems, such as digital indoor distributed systems, are favored by more and more operators due to their lower engineering requirements, flexible installation and good coverage. However, in a scenario with more barriers, a large number of Remote Radio Units (RRUs) need to be deployed to extend a coverage range, so that the deployment cost is high.
In addition, the passive distribution system can reduce the deployment cost, but because the passive distribution system cannot meet the requirement of visual management, the fault location is difficult after deployment, and the operation and maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The application provides a radio frequency remote unit which can solve the problem of high deployment and operation and maintenance costs.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides a radio frequency remote unit, including: the antenna comprises an active device, a passive device and N first antennas, wherein the passive device comprises a first end and N second ends, N is a positive integer and is more than or equal to 2; the first end of the passive device is in signal connection with the active device; the ith second end of the passive device is in signal connection with the ith first antenna; i is a positive integer, and i is more than or equal to 1 and less than or equal to N.
Optionally, N is an even number.
Furthermore, the radio frequency far-end unit further comprises a second antenna, and the passive device further comprises a third end; and the third end of the passive device is in signal connection with the second antenna.
Based on the radio frequency far-end unit of the first aspect, on one hand, the passive device is combined with the plurality of first antennas, the requirement of large-area coverage can be met, and the passive device is cheaper than the active device and is low in deployment cost. On the other hand, the active device is controllable, so that the fault positioning range can be reduced by combining the passive device and the active device, the operation and maintenance efficiency is improved, and the operation and maintenance cost is reduced.
In a second aspect, the present application provides an access network device. The access network device includes: a baseband processing unit, an extension unit and the radio frequency remote unit according to the first aspect; the baseband processing unit is in signal connection with the extension unit; the extension unit is in signal connection with the radio frequency remote unit.
For the description of the second aspect in the present application, reference may be made to the detailed description of the first aspect; in addition, the beneficial effects of the second aspect may refer to the beneficial effect analysis in the first aspect, and are not described herein again.
These and other aspects of the present application will be more readily apparent from the following description.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency remote unit provided in the present application;
fig. 2 is another schematic structural diagram of a radio frequency remote unit provided in the present application;
fig. 3 is a schematic diagram of another structure of the rf remote unit provided in the present application;
fig. 4 is a schematic structural diagram of an access network device provided in the present application;
fig. 5 is a structural diagram of a passive device provided in the present application.
Reference numerals:
101-a radio frequency remote unit; 102-an active device; 103-passive devices; 104-a first antenna; 201-a second antenna; 301-digital intermediate frequency module; 302-a transceiver module; 303-power amplifier module; 304-a filtering module; 401-baseband processing unit; 402-extension unit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For the convenience of clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art will understand that the terms "first", "second", and the like are not limited in number or execution order.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
The embodiment of the application provides a radio frequency remote unit. Referring to fig. 1, a radio remote unit 101 includes: an active device 102, a passive device 103, and N first antennas 104.
Specifically, the passive device 103 includes a first terminal and N second terminals, where N is a positive integer and N is greater than or equal to 2; wherein, the first end of the passive device 103 is in signal connection with the active device 102; the ith second terminal of the passive device 103 is in signal connection with the ith first antenna 104; i is a positive integer, and i is more than or equal to 1 and less than or equal to N.
For example, in a Downlink (DL) scenario, the passive device 103 receives a signal from the active device 102 via a first end, divides the signal into N paths, and transmits the N paths of signals to the N first antennas 104 via a second end.
For another example, in an Uplink (UL) scenario, the passive device 103 receives signals from the N first antennas 104 via the N second terminals, combines the signals into one path, and transmits the combined signal to the active device 102 via the first terminal.
It should be noted that the first antenna may be determined according to actual situations, and the present application is not limited specifically. For example, the first antenna may be an omni-directional antenna or a directional antenna. In addition, the number of the first antennas may also be determined according to actual situations, and the present application is not particularly limited.
Optionally, N is an even number.
For example, the passive device 103 may be a four-way power divider, i.e., N is 4. At this time, the number of the first antennas 104 is four, that is, the passive device 103 divides the signal from the active device 102 into four paths.
It is understood that the specific structure of the passive device 103 may be determined according to practical situations, and the present application is not particularly limited. For example, the passive device 103 may also be a two-way power divider, a six-way power divider, or an eight-way power divider in sequence, that is, N may be 2, 6, or 8, and at this time, the signal from the active device 102 is divided into two, six, or eight ways, and is transmitted through the corresponding first antenna.
Therefore, the passive device is combined with the plurality of first antennas, the requirement of large-area coverage is met, the passive device is cheaper than the active device, and the deployment cost is low. In addition, the active device is controllable, so that the fault positioning range can be reduced by combining the passive device and the active device, the operation and maintenance efficiency is improved, and the operation and maintenance cost is reduced.
Optionally, as shown in fig. 2, the radio frequency remote unit 101 further includes a second antenna 201, and the passive device 103 further includes a third terminal; the third terminal of the passive device 103 is in signal connection with the second antenna 201.
For example, as shown in fig. 5, the passive device 103 may include a coupler and a four-way power divider, the coupler being in signal connection with the second antenna 201 via the third terminal, and the four-way power divider being in signal connection with the ith first antenna via the ith second terminal. At this time, the passive device 103 splits the signal from the active device 102 into five paths. It is understood that the specific structure of the passive device 103 may be determined according to practical situations, and the present application is not particularly limited. For example, the passive device 103 may further include a coupler and a two-way power divider, a coupler and a six-way power divider, or a coupler and an eight-way power divider, that is, a signal from the active device 102 is divided into three, seven, or nine paths and transmitted through the second antenna and the corresponding first antenna.
Therefore, the passive device is combined with the plurality of first antennas, the requirement of large-area coverage is met, the passive device is cheaper than the active device, and the deployment cost is low. In addition, the active device is controllable, so that the fault positioning range can be reduced by combining the passive device and the active device, the operation and maintenance efficiency is improved, and the operation and maintenance cost is reduced.
In addition, the specific structure of the rf remote unit 101 of the present application may be determined according to actual situations, and is not particularly limited.
For example, as shown in fig. 3, the rf remote unit 101 further includes: the digital intermediate frequency module 301, the transceiver module 302, the power amplifier module 303 and the filter module 304.
Specifically, the digital intermediate frequency module 301 is in signal connection with the transceiver module 302. The digital intermediate frequency module 301 mainly functions to manage and control the RRU and implement a Common Public Radio Interface (CPRI) protocol.
In addition, the specific structure of the digital intermediate frequency module 301 may be determined according to actual situations, and the present application is not particularly limited. For example, the digital if module 301 may include a Central Processing Unit (CPU) and a Field Programmable Gate Array (FPGA); also for example, the digital intermediate frequency module 301 may employ a separate digital front end chip.
The transceiver module 302 is in signal connection with the power amplifier module 303. The transceiver module 302 is used for digital/analog signal conversion and baseband signal/radio frequency signal conversion.
The power amplifier module 303 is in signal connection with the filtering module 304. The specific structure of the power amplifier module 303 may be determined according to actual conditions, and the present application is not limited specifically. For example, in a downlink scenario, the Power Amplifier module 303 may be a Power Amplifier (PA). For another example, in the downlink scenario, the power Amplifier module 303 may be a Low Noise Amplifier (LNA).
The filtering module 304 is in signal connection with the active device 102. The filtering module 304 is used for filtering the signal from the power amplifier module 303 or the active device 102 to reduce the transmission spurs and suppress the blocking. The specific structure of the filtering module 304 may be determined according to actual situations, and the application is not particularly limited. For example, the filtering module 304 may be a Surface Acoustic Wave (SAW) filter.
It should be noted that the above is only an exemplary illustration of the specific structure of the rf remote unit 101 of the present application, and does not limit the present application.
For example, in the rf remote unit 101 of the present application, a high power switch may be disposed between the filtering module 304 and the active device 102 to isolate the signal reflected from the antenna port back to the receive path in the transmit path.
In addition, the passive device 103 shown in fig. 3 may also include a third terminal. In this case, the third terminal of the passive device 103 may be in signal connection with the second antenna. The number of the third terminals and the second antennas of the passive devices 103 may be plural, and the present application is not limited to a specific number.
Next, an access network device provided in an embodiment of the present application is described. Referring to fig. 4, the access network apparatus includes: a baseband processing unit 401, an extension unit 402 and a radio frequency remote unit 101.
The baseband processing unit 401 is in signal connection with an extension unit 402. The specific structure of the baseband processing unit 401 may be determined according to actual situations, and the present application is not limited specifically. For example, the baseband processing unit 401 may use a related art indoor baseband processing unit (BBU).
The extension unit 402 is in signal connection with the rf remote unit 101. The extension unit 402 is used for downlink data distribution and uplink data aggregation to implement data communication with the radio frequency remote unit 101. The specific structure of the extension unit 402 can be determined according to practical situations, and the application is not particularly limited.
In addition, for specific description of the rf remote unit 101, reference may be made to the detailed description of the above embodiments, which is not repeated herein.
It is understood that the access network device is a device located on the network side of the communication system and having a wireless transceiving function or a chip system that can be installed in the device. The access network devices include, but are not limited to: an Access Point (AP) in a WiFi system, such as a Home gateway, a router, a server, a switch, a bridge, etc., an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), a Base Band Unit (BBU), a wireless relay Node, a wireless backhaul Node, a Transmission Point (Transmission And Reception Point, TRP, or Transmission Point, TP), etc., And may also be 5G, such as a gbb in a New air interface (New, NR) system, or a Transmission Point (TRP or TP), one or a group of Base stations in a 5G system including multiple antennas (antenna panels, or panels), it may also be a network node constituting a gNB or a transmission point, such as a baseband Unit (BBU), or a Distributed Unit (DU), a Road Side Unit (RSU) with a base station function, etc.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. A radio frequency remote unit, comprising: the antenna comprises an active device, a passive device and N first antennas, wherein the passive device comprises a first end and N second ends, N is a positive integer and is more than or equal to 2; wherein the content of the first and second substances,
the first end of the passive device is in signal connection with the active device;
the ith second end of the passive device is in signal connection with the ith first antenna; i is a positive integer, and i is more than or equal to 1 and less than or equal to N.
2. The remote radio unit of claim 1, wherein N is an even number.
3. The rf remote unit of claim 1, further comprising a second antenna, wherein the passive device further comprises a third terminal;
and the third end of the passive device is in signal connection with the second antenna.
4. The radio frequency remote unit according to any one of claims 1-3, further comprising: the digital intermediate frequency module, the transceiver module, the power amplifier module and the filter module; wherein the content of the first and second substances,
the digital intermediate frequency module is in signal connection with the transceiving module;
the transceiver module is in signal connection with the power amplifier module;
the power amplification module is in signal connection with the filtering module;
the filtering module is in signal connection with the active device.
5. An access network device, comprising: a baseband processing unit, an extension unit, and a radio frequency remote unit according to any one of claims 1-4; wherein the content of the first and second substances,
the baseband processing unit is in signal connection with the extension unit;
the extension unit is in signal connection with the radio frequency remote unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122087151.3U CN215871861U (en) | 2021-08-31 | 2021-08-31 | Radio frequency remote unit and access network equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122087151.3U CN215871861U (en) | 2021-08-31 | 2021-08-31 | Radio frequency remote unit and access network equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215871861U true CN215871861U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122087151.3U Active CN215871861U (en) | 2021-08-31 | 2021-08-31 | Radio frequency remote unit and access network equipment |
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| CN (1) | CN215871861U (en) |
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- 2021-08-31 CN CN202122087151.3U patent/CN215871861U/en active Active
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