CN113055040B - Radio remote unit and communication system - Google Patents
Radio remote unit and communication system Download PDFInfo
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- CN113055040B CN113055040B CN201911361357.1A CN201911361357A CN113055040B CN 113055040 B CN113055040 B CN 113055040B CN 201911361357 A CN201911361357 A CN 201911361357A CN 113055040 B CN113055040 B CN 113055040B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The disclosure provides a radio remote unit and a communication system, and relates to the field of communication. The remote radio unit comprises a digital intermediate frequency unit, a pluggable transceiver and a radio frequency front end, wherein the digital intermediate frequency unit is provided with four interfaces for connecting the transceiver and a transceiver mode setting interface, the transceiver mode comprises a one-piece four-channel transceiver and one-piece or two-piece two-channel transceiver, and the radio frequency front end is provided with four groups of transceiver interfaces for connecting the transceiver, so that one remote radio unit can be compatible with two transceivers of two channels or four channels, and the generalization degree of the remote radio unit is improved.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a remote radio unit and a communication system.
Background
In a 5G indoor distribution network, a large number of small Radio Remote Units (RRUs) are used as supports to meet the requirements and coverage of a high-speed network.
The transceivers in the remote radio unit are custom designed, either as dual-channel transceivers or as quad-channel transceivers, which are incompatible with each other and are not conducive to the generalization of the remote radio unit.
Disclosure of Invention
The remote radio unit comprises a digital intermediate frequency unit, a pluggable transceiver and a radio frequency front end, wherein the digital intermediate frequency unit is provided with four interfaces for connecting the transceiver and a transceiver mode setting interface, the transceiver mode comprises a one-piece four-channel transceiver and one-piece or two-piece two-channel transceiver, and the radio frequency front end is provided with four groups of transceiver interfaces for connecting the transceiver, so that one remote radio unit can be compatible with two transceivers of two channels or four channels, and the generalization degree of the remote radio unit is improved.
Some embodiments of the present disclosure provide a remote radio unit, including: the system comprises a digital intermediate frequency unit, a pluggable transceiver and a radio frequency front end; the transceiver is a dual-channel transceiver or a four-channel transceiver;
the digital intermediate frequency unit is provided with four interfaces used for connecting the transceivers and a transceiver mode setting interface, the transceiver mode comprises a one-piece four-channel transceiver and one-piece or two-piece two-channel transceiver, and the radio frequency front end is provided with four groups of transceiver interfaces used for connecting the transceivers.
In some embodiments, the digital intermediate frequency unit comprises an enhanced common public radio interface, eccri, for connecting to a baseband processing unit, a digital up-conversion sub-unit and a digital down-conversion sub-unit connected to the eccri.
In some embodiments, the digital intermediate frequency unit further comprises one or more of a peak reduction subunit, a digital predistortion subunit, an up-modulation subunit, a down-modulation subunit;
the wave crest reduction subunit is connected with the digital up-conversion subunit;
the digital predistortion subunit is connected with the digital up-conversion subunit or the wave crest reduction subunit;
the up-frequency modulation subunit is connected with the digital up-frequency conversion subunit or the digital predistortion subunit;
and the lower frequency modulation subunit is connected with the digital lower frequency conversion subunit.
In some embodiments, further comprising: and one or more of a memory, an optical port, a clock unit and a power supply unit are connected with the digital intermediate frequency unit.
In some embodiments, the dual channel transceiver includes a set of transmit units and a set of receive units; the four-channel transceiver includes two sets of transmit units and two sets of receive units.
In some embodiments, the transmitting unit includes a digital-to-analog converting subunit, a low-pass filter, and an in-phase-quadrature modulator connected in sequence; the receiving unit comprises an analog-to-digital conversion subunit and a low-pass filter which are connected in sequence.
In some embodiments, each set of transceiving interfaces of the rf front-end is connected to a set of amplifiers, filters and antennas connected in sequence.
In some embodiments, the amplifier comprises a power amplifier and a preamplifier, the power amplifier and the preamplifier being connected to the filter by a circulator.
In some embodiments, a switch is disposed between the filter and the antenna.
Some embodiments of the present disclosure propose a communication system, including:
a baseband processing unit for processing the received signal,
distributed processing unit, and
a radio remote unit;
the baseband processing unit, the distributed processing unit and the remote radio unit are connected in sequence.
Drawings
The drawings that will be used in the description of the embodiments or the related art will be briefly described below. The present disclosure will be more clearly understood from the following detailed description, which is given with reference to the accompanying drawings,
it is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without undue inventive faculty.
Fig. 1 is a schematic diagram of a communication system in some embodiments of the present disclosure.
Fig. 2 is a communication system deployment diagram in some embodiments of the present disclosure.
Fig. 3 is a schematic diagram of a remote radio unit 13 employing two-chip dual channel transceiver 41 according to some embodiments of the present disclosure.
Fig. 4 is a schematic diagram of a remote radio unit 13 employing a dual channel transceiver 41 in some embodiments of the present disclosure.
Fig. 5 is a schematic diagram of a remote radio unit 13 employing a one-chip four-channel transceiver 42 in some embodiments of the present disclosure.
Fig. 6 is an alternative schematic diagram of the two-channel transceiver 41 and the four-channel transceiver 42 in the remote radio unit 13 according to the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
Fig. 1 is a schematic diagram of a communication system in some embodiments of the present disclosure.
As shown in fig. 1, the communication system of the embodiment includes: a Base Band Unit (BBU) 11, a distributed processing Unit 12, and a Remote Radio Unit (RRU) 13. The baseband processing unit 11, the distributed processing unit 12, and the remote radio unit 13 are connected in sequence. The distributed processing unit 12 is a network switching device, such as a hub (hub).
Fig. 2 is a communication system deployment diagram in some embodiments of the present disclosure.
As shown in fig. 2, each building is assigned with one baseband processing unit 11, each baseband processing unit 11 may be connected to a plurality of distributed processing units 12, each floor may be assigned with one distributed processing unit 12, each distributed processing unit 12 may be connected to a plurality of remote radio units 13, and one remote radio unit 13 provides an indoor network service, such as a 5G indoor network service, for one or more rooms.
The present disclosure provides a universal remote radio unit capable of being compatible with two transceivers of two channels or four channels, which is described in detail below.
Fig. 3 is a schematic diagram of a remote radio unit 13 employing two-chip dual channel transceiver 41 according to some embodiments of the present disclosure.
Fig. 4 is a schematic diagram of a remote radio unit 13 employing a dual channel transceiver 41 in some embodiments of the present disclosure.
Fig. 5 is a schematic diagram of a remote radio unit 13 employing a one-chip four-channel transceiver 42 in some embodiments of the present disclosure.
As shown in fig. 3-5, the remote radio unit 13 includes: a digital intermediate frequency unit 30, a pluggable transceiver 40 and a radio frequency front end 50. The transceiver 40 is a dual channel transceiver 41 or a quad channel transceiver 42. Shown are 41, 42, not directly shown 40.
The digital intermediate frequency unit 30 has four interfaces 31 for connecting transceivers and a transceiver mode setting interface 32. The transceiver mode includes a one-chip four-channel transceiver 42, a one-chip two-channel transceiver 41, or a two-chip two-channel transceiver 41. The four interfaces 31 are high-speed interfaces, such as Serial Peripheral Interfaces (SPI). Four interfaces 31 are provided at one side of the digital intermediate frequency unit 30. The value of the transceiver mode setting interface 32 is set by the mode of the transceiver to which the digital intermediate frequency unit 30 is connected, so that the digital intermediate frequency unit 30 learns the mode of the transceiver to which it is connected and performs a transmission process or a reception process on the corresponding interface 31. The transmission processing or the reception processing is described later in detail.
The digital intermediate frequency unit 30 includes an enhanced Common Radio Interface (eCPRI) 33 for connecting the baseband processing units (or connecting the baseband processing units through the distributed processing unit), a digital up-conversion sub-unit 34 connected to the eCPRI33, and a digital down-conversion sub-unit 35. The digital up-conversion subunit 34 serves to convert the baseband signal into an intermediate frequency signal by mixing. The digital down-conversion subunit 35 is configured to convert the intermediate frequency signal into a baseband signal by mixing.
The digital intermediate frequency unit 30 further comprises one or more of a peak reduction sub-unit 36, a digital pre-distortion sub-unit 37, an up-modulation sub-unit 38, and a down-modulation sub-unit 39. The peak reduction sub-unit 36 is connected to the digital up-conversion sub-unit 34. The digital predistortion sub-unit 37 is connected to the digital up-conversion sub-unit 34 or the peak reduction sub-unit 36. The up-conversion subunit 38 is connected to the digital up-conversion subunit 34 or to the digital pre-distortion subunit 37. The down-conversion subunit 39 is connected to the digital down-conversion subunit 35. The peak reduction subunit 36 is configured to reduce the dynamic range of a transmitted signal so that the amplifier transmitting the signal can reduce back-off during operation. The digital predistortion sub-unit 37 is used to compensate for the gain and phase variation of the input signal over the entire power variation range before entering the power amplifier by using a predistortion technique. The up-conversion sub-unit 38 is used to up-convert the input signal via a multiplier and a pre-set carrier to bring the input signal to the target frequency, which is optional and if the target frequency has been reached by digital up-conversion, no further up-conversion is required. The input signal reaches the target frequency through an up-conversion and up-modulation secondary structure, so that the stability of the signal is better. A down-modulation subunit 39 is provided for down-modulating the input signal by means of a multiplier and a predetermined carrier to bring the input signal to the target frequency, which unit is optional and if the target frequency has been reached by digital down-conversion, no further down-modulation is necessary. The input signal reaches the target frequency through the down-conversion and down-conversion secondary structure, so that the stability of the signal is better.
The remote radio unit 13 further includes: one or more of a memory 61, an optical port 62, a clock unit 63, and a power supply unit 64 connected to the digital intermediate frequency unit 30. The Memory 61 includes, for example, a DDR (Double Data Rate) SDRAM (Synchronous Dynamic Random Access Memory), a flash Memory (flash), and the like. Optical port 62 is a fiber optic interface for connecting to the physical interface of a fiber optic cable. The clock unit 63 is used to provide synchronization services. The Power supply unit 64 is used to provide Power, such as Power Over Ethernet (POE), to provide dc Power.
The dual channel transceiver 41 includes a set of transmit units and a set of receive units. The four-channel transceiver 42 includes two sets of transmit units and two sets of receive units.
The transmitting unit includes a digital-to-analog converting subunit 43, a low-pass filter 44, and an In-phase Quadrature (IQ) modulator 45 connected In this order. The digital-to-analog conversion subunit 43 is used to perform digital-to-analog conversion on the input signal. The low-pass filter 44 is an electronic filter device that allows signals below the cutoff frequency to pass, but does not allow signals above the cutoff frequency to pass. The IQ modulator 45 divides the input data into two paths, and performs carrier modulation on the two paths, respectively, with the two paths of carriers being orthogonal to each other.
The receiving unit comprises an analog-to-digital conversion subunit 46 and a low-pass filter 47 connected in series. The analog-to-digital conversion subunit 46 is used to perform analog-to-digital conversion on the input signal.
The rf front end 50 has four sets of transceiver interfaces 51 for connecting transceivers. Each set of transceiving interface 51 of the rf front-end 50 is connected to a set of amplifier 52, filter 53 and antenna 54 connected in sequence. Amplifier 52 includes a power amplifier 521 and a preamplifier 522, and power amplifier 521 and preamplifier 522 are connected to filter 53 through a ring 523. A switch 55 is provided between the filter 53 and the antenna 54. The power amplifier 521 and the preamplifier 522 are shown directly, and the amplifier 52 is not shown directly.
The respective sub-units in the digital intermediate frequency unit 30 may be implemented by software or hardware. The various subunits in the transceiver 40 and the rf front-end 50 may be implemented in hardware. Hard links are used among the units of the radio remote unit 13, so that the cost and the risk brought by cable connection are reduced.
The signal sent by the baseband processing unit 11 reaches the remote radio unit 13 through the distributed processing unit 12, enters the sending processing branch through the eccri 33 of the digital intermediate frequency unit 30, then passes through the processing of the digital up-conversion subunit 34, the peak reduction subunit 36, the digital pre-distortion subunit 37 and the up-modulation subunit 38, and reaches the transceiver 40 through the interface 31; according to the set transceiver mode of the transceiver mode setting interface 32, entering a transmitting unit (which may be a group of transmitting units or two groups of transmitting units according to the transceiver mode) of the transceiver through the corresponding interface 31, and processing by the digital-to-analog converting subunit 43, the low-pass filter 44 and the IQ modulator 45 in the transmitting unit to reach the radio frequency front end 50; enters the rf front end 50 through the transceiving interface 51, is processed by the power amplifier 521 and the filter 53, and finally is transmitted through the antenna 54.
The signal received by the antenna 54 is processed by the filter 53 and the preamplifier 522 to reach the transceiver 40; enters a receiving unit of the transceiver 40, and reaches the digital intermediate frequency unit 30 after being processed by a low pass filter 47 and an analog-to-digital conversion sub-unit 46; enters a receiving processing branch, is processed by the down-frequency modulation subunit 39 and the digital down-conversion subunit 35, goes out through the eCPRI33, and finally reaches the baseband processing unit 11 through the distributed processing unit 12.
Fig. 6 is an alternative schematic diagram of the two-channel transceiver 41 and the four-channel transceiver 42 in the remote radio unit 13 according to the present disclosure. As shown in fig. 6, the two-channel transceiver 41 is unplugged and the four-channel transceiver 42 is plugged in. Alternatively, the quad transceiver 42 may be unplugged and one or two dual channel transceivers 41 plugged in.
The remote radio unit comprises a digital intermediate frequency unit, a pluggable transceiver and a radio frequency front end, wherein the digital intermediate frequency unit is provided with four interfaces for connecting the transceiver and a transceiver mode setting interface, the transceiver mode comprises a four-channel transceiver and a two-channel transceiver or two-channel transceiver, and the radio frequency front end is provided with four groups of transceiver interfaces for connecting the transceivers, so that one remote radio unit can be compatible with two transceivers of two channels or four channels, and the universality of the remote radio unit is improved.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A remote radio unit compatible with a two-channel transceiver and a four-channel transceiver, comprising: the system comprises a digital intermediate frequency unit, a pluggable transceiver and a radio frequency front end; the transceiver is a dual-channel transceiver or a four-channel transceiver;
the digital intermediate frequency unit is provided with four interfaces used for connecting the transceivers and a transceiver mode setting interface, the transceiver mode comprises a one-piece four-channel transceiver and one-piece or two-piece two-channel transceiver, and the radio frequency front end is provided with four groups of transceiver interfaces used for connecting the transceivers.
2. The remote radio unit of claim 1,
the digital intermediate frequency unit comprises an enhanced common public radio interface eCPRI connected with a baseband processing unit, a digital up-conversion subunit and a digital down-conversion subunit which are connected with the eCPRI.
3. The remote radio unit of claim 2,
the digital intermediate frequency unit also comprises one or more of a wave crest reduction subunit, a digital predistortion subunit, an upper frequency modulation subunit and a lower frequency modulation subunit;
the wave crest reduction subunit is connected with the digital up-conversion subunit;
the digital predistortion subunit is connected with the digital up-conversion subunit or the wave crest reduction subunit;
the up-frequency modulation subunit is connected with the digital up-frequency conversion subunit or the digital predistortion subunit;
and the lower frequency modulation subunit is connected with the digital lower frequency conversion subunit.
4. The remote radio unit according to claim 1, further comprising:
and one or more of a memory, an optical port, a clock unit and a power supply unit are connected with the digital intermediate frequency unit.
5. The remote radio unit of claim 1,
the dual-channel transceiver comprises a group of sending units and a group of receiving units;
the four-channel transceiver includes two sets of transmit units and two sets of receive units.
6. The remote radio unit of claim 5,
the transmitting unit comprises a digital-to-analog conversion subunit, a low-pass filter and an in-phase quadrature modulator which are sequentially connected;
the receiving unit comprises an analog-to-digital conversion subunit and a low-pass filter which are connected in sequence.
7. The remote radio unit of claim 1,
each group of transceiving interfaces of the radio frequency front end is connected with a group of amplifiers, filters and antennas which are connected in sequence.
8. The remote radio unit of claim 7,
the amplifier comprises a power amplifier and a preamplifier, and the power amplifier and the preamplifier are connected with the filter through a circulator.
9. The remote radio unit of claim 7,
a switch is arranged between the filter and the antenna.
10. A communication system, comprising:
a baseband processing unit for processing the received signal,
distributed processing unit, and
the remote radio unit of any one of claims 1-9;
the baseband processing unit, the distributed processing unit and the remote radio unit are connected in sequence.
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| CN201911361357.1A CN113055040B (en) | 2019-12-26 | 2019-12-26 | Radio remote unit and communication system |
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| CN201911361357.1A CN113055040B (en) | 2019-12-26 | 2019-12-26 | Radio remote unit and communication system |
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| CN113055040B true CN113055040B (en) | 2022-06-07 |
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| WO2023001135A1 (en) * | 2021-07-21 | 2023-01-26 | 华为技术有限公司 | Distributed wireless system and device |
| CN116248144B (en) * | 2022-12-30 | 2024-07-23 | 中国联合网络通信集团有限公司 | Communication equipment, communication equipment performance tuning method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009067859A1 (en) * | 2007-10-30 | 2009-06-04 | Datang Mobile Communications Equipment Co., Ltd | A method and apparatus for configuring data channel |
| CN102486763A (en) * | 2010-12-06 | 2012-06-06 | 无锡爱睿芯电子有限公司 | 6-port serial port communication interface board |
| CN104541535A (en) * | 2013-08-20 | 2015-04-22 | 华为技术有限公司 | Wireless communication device and method |
| KR20170025339A (en) * | 2015-08-28 | 2017-03-08 | 에스케이텔레콤 주식회사 | Method and Apparatus for Sharing Feeder of Base Station, And Base Station Apparatus Using the Same |
| CN109257805A (en) * | 2018-08-28 | 2019-01-22 | 北京航空航天大学 | A kind of more servicing transceiver systems of expansible low-power consumption |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10502572B1 (en) * | 2016-08-25 | 2019-12-10 | The Government Of The United States Of America As Represented By The Secretary Of The Navy | System and methods for network routing and data repackaging |
| CN109150208B (en) * | 2018-10-31 | 2020-10-09 | 鹰视云(深圳)科技有限公司 | Device for enhancing space-to-air coverage capability of mobile communication base station |
-
2019
- 2019-12-26 CN CN201911361357.1A patent/CN113055040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009067859A1 (en) * | 2007-10-30 | 2009-06-04 | Datang Mobile Communications Equipment Co., Ltd | A method and apparatus for configuring data channel |
| CN102486763A (en) * | 2010-12-06 | 2012-06-06 | 无锡爱睿芯电子有限公司 | 6-port serial port communication interface board |
| CN104541535A (en) * | 2013-08-20 | 2015-04-22 | 华为技术有限公司 | Wireless communication device and method |
| KR20170025339A (en) * | 2015-08-28 | 2017-03-08 | 에스케이텔레콤 주식회사 | Method and Apparatus for Sharing Feeder of Base Station, And Base Station Apparatus Using the Same |
| CN109257805A (en) * | 2018-08-28 | 2019-01-22 | 北京航空航天大学 | A kind of more servicing transceiver systems of expansible low-power consumption |
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