FDD system 5G and transverse connection integrated base station

Abstract

The utility model relates to the technical field of communication equipment, in particular to an FDD (Frequency Division Duplexing) 5G and transverse connection integrated base station, which comprises a power supply module, a baseband unit, a radio frequency unit, a radio frequency front-end module and a radio frequency duplexer which are arranged or integrated in a shell, the antenna is arranged outside the shell, penetrates through the shell through an antenna opening formed in the surface of the shell and is connected with the radio frequency duplexer; wherein the radio frequency unit is used for processing 5G and mutual conversion between inter-station ad hoc network digital signals and radio frequency signals, interconnecting signals of a radio frequency transceiving channel with the radio frequency front-end module, and communicating with other terminals or base stations through an antenna. According to the scheme, uplink and downlink full-band spectrum sensing, 5G access and inter-station ad hoc network cross-linking return of a 5G base station of an FDD system can be integrated, additional return channel hardware configuration is not needed, the use flexibility of the base station is greatly improved, and the problems that in the FDD mode, the base station with access and inter-station networking capabilities is large in size, high in power consumption, low in cost and the like are solved. And the downlink spectrum environment cannot be sensed.

Description

Technical Field

[0001] This utility model relates to the field of communication equipment technology, specifically to an integrated FDD-based 5G and horizontal connection base station. Background Technology

[0002] To address the mobile communication needs in complex field environments, and to expand communication range and improve the stability and reliability of communication service transmission links, integrated, miniaturized, and low-power base station designs are required, along with the ability for multiple base stations to wirelessly interconnect and form a network. Existing base station backhaul methods generally utilize wired fiber optic backhaul, or built-in 5G+ self-organizing network channels for backhaul. Some also employ TDD-based idle time slot IAB integrated access backhaul, or utilize multiple DU resources per cell to achieve FDD paired uplink and downlink spectrum IAB backhaul. The wireless backhaul network is a multi-point-to-multi-point decentralized, self-organizing network topology, where all nodes are configured with the same transmit and receive channel operating frequency, and is only suitable for TDD-based communication.

[0003] Existing technologies have some problems, such as:

[0004] 1. The 5G+self-organizing network horizontal connection method integrates the 5G module and the self-organizing network module in one device, which results in problems such as large device weight (over 20Kg), large size, and high power consumption, making it inconvenient for use in mobile scenarios such as carrying on the back or being carried by drones.

[0005] 2. Traditional FDD base stations cannot achieve inter-site wireless networking communication without adding extra hardware channels.

[0006] Therefore, there is an urgent need for an integrated FDD-based 5G and horizontally connected base station to solve the problems existing in the current technology. Utility Model Content

[0007] This utility model aims to provide an integrated FDD-compliant 5G and crosslink base station, which can perform full-band uplink and downlink spectrum sensing for FDD-compliant 5G base stations, and integrate 5G access and inter-site self-organizing network crosslink backhaul. It does not require additional backhaul channel hardware configuration, greatly improving the flexibility of base station use, and solving the problems of large size, high power consumption, and inability to sense downlink spectrum environment of base stations with access and inter-site networking capabilities in FDD mode.

[0008] This utility model provides the following basic solution: an FDD-based 5G and horizontally integrated base station, comprising: a housing, a power module, a baseband unit, a radio frequency unit, a radio frequency front-end module, a radio frequency duplexer, and an antenna;

[0009] The power module, baseband unit, RF unit, RF front-end module, and RF duplexer are mounted or integrated within the housing;

[0010] The antenna is mounted outside the housing and passes through the housing via an antenna port on the housing surface to connect to the radio frequency duplexer.

[0011] The power module is connected to the baseband unit, the radio frequency unit, and the radio frequency front-end module to supply power to them; and the baseband unit, the radio frequency unit, the radio frequency front-end module, and the radio frequency duplexer are connected in sequence.

[0012] The baseband unit is used for processing 5G core network, physical layer, protocol stack, as well as FEC encoding / decoding transmission channel, HARQ combining, and radio frequency processing;

[0013] The radio frequency unit is used to process the mutual conversion between digital signals and radio frequency signals in 5G and inter-site ad hoc networks, and to interconnect the signals of the radio frequency transceiver channel with the radio frequency front-end module, and communicate with other terminals or base stations through the antenna;

[0014] The radio frequency front-end module is used to amplify wireless transceiver signals and select channels for 5G access channels and inter-site cross-connection networking channels.

[0015] Radio frequency duplexer, used for filtering different frequency bands of FDD uplink and downlink and antenna port combining;

[0016] Antennas are used to radiate wireless signals for 5G access and inter-site ad hoc networks.

[0017] Furthermore, it also includes: device interfaces; device interfaces are installed or integrated within the housing;

[0018] The device interfaces include: a power interface, a service interface, and a maintenance interface.

[0019] Furthermore, the radio frequency unit includes: a radio frequency transceiver and a digital front-end module;

[0020] The digital front-end module is used for 5G access and inter-site self-organizing network waveform baseband signal processing, and communicates uplink and downlink with the RF transceiver through a high-speed interface; the RF transceiver is used for mutual conversion between digital intermediate frequency signals transmitted by the digital front-end module FPGA and analog RF signals.

[0021] Furthermore, the RF front-end module includes: an MCU controller, a transmit amplification link, an output power coupler, a circulator, a transmit / receive switching switch, a reflective coupler, a downlink receive low-noise amplifier link, an uplink receive low-noise amplifier link, and a mode switching switch.

[0022] The MCU controller is used for RF front-end control and status detection.

[0023] The transmit amplification link is used for power amplification in the 5G / crosslink downlink band. It can be turned on and off by an enable signal. The input of the transmit amplification link is connected to the radio frequency unit, and the output is connected to the output power coupler.

[0024] The output power coupler is used for output power sensing OPD;

[0025] The circulator is used to increase transmit / receive isolation and is connected to the output power coupler, transmit / receive switching switch and RF duplexer respectively.

[0026] The transmit / receive switch is used to switch between the reflected power detection link and the cross-connected communication frequency sweep link;

[0027] The reflected power detection link includes: a reflected coupler; the reflected coupler is used to detect reflected power and antenna port VSWR;

[0028] The cross-connected communication frequency sweep link includes: downlink receiving low-noise amplifier link, uplink receiving low-noise amplifier link, and mode switching switch;

[0029] The downlink receiving low-noise amplifier link is used to amplify downlink sweep frequency signals and cross-connected receiving signals;

[0030] The uplink receiving low-noise amplifier link is used to amplify uplink frequency sweep signals and 5G access receiving signals;

[0031] The mode switch is used to switch between FDD 5G access mode and crossover mode.

[0032] Furthermore, the transmit / receive switching switch is a single-pole double-throw switch, with its moving end connected to the circulator and its two stationary ends connected to the reflected power detection link and the cross-linked communication sweep frequency link, respectively; when the moving end of the transmit / receive switching switch is connected to the stationary end connected to the reflected power detection link, it is connected to the reflected power detection link; when the moving end is connected to the stationary end connected to the cross-linked communication sweep frequency link, it is connected to the cross-linked communication sweep frequency link.

[0033] The reflective coupler is connected to the stationary terminal of the transmit / receive switch.

[0034] Furthermore, the mode switching switch is a single-pole double-throw switch, with the moving end connected to the radio frequency unit and the two stationary ends connected to the downlink receiving low-noise amplifier link and the uplink receiving low-noise amplifier link, respectively.

[0035] The input terminal of the downlink receiving low-noise amplifier link is connected to the stationary terminal of the transmit / receive switching switch, and the output terminal of the downlink receiving low-noise amplifier link is connected to the stationary terminal of the mode switching switch.

[0036] The input terminal of the uplink receiving low-noise amplifier link is connected to the radio frequency duplexer, and the output terminal of the uplink receiving low-noise amplifier link is connected to the stationary terminal of the mode switching switch.

[0037] Furthermore, two sets of RF duplexers are connected to two sets of RF front-end modules to form a two-antenna 2*2 MIMO.

[0038] Beneficial effects: This solution adopts a set of radio frequency hardware architecture to realize full-band uplink and downlink spectrum awareness of 5G base stations in FDD mode, and integrates 5G access and inter-site self-organizing network cross-connection backhaul. No additional backhaul channel hardware configuration is required, which greatly improves the flexibility of base station use and solves the problem that base stations with access and inter-site networking capabilities in FDD mode are large in size, have high power consumption, and cannot sense the downlink spectrum environment.

[0039] Specifically, in this solution, each module unit is installed or integrated in the housing, and adopts an integrated dual-antenna design of distributed core network + BBU + RRU. 5G access operates in the conventional FDD frequency band, downlink frequency band F1, uplink frequency band F2, 5G access supports 2T2R, and the inter-site cross-connect multiplexed 5G radio frequency front-end hardware architecture operates in the F1 frequency band for both uplink and downlink. Taking 5G radio subframe as the smallest dimension unit, the time-division scheduling method is used to achieve seamless switching of 5G / cross-connected channels.

[0040] The integrated base station operates in FDD 5G access mode. The moving end of the transmit / receive switching switch is connected to the stationary end of the reflected power detection link, and the moving end of the mode switching switch is connected to the stationary end of the uplink receiving low-noise amplifier link. The transmit amplification link and the uplink receiving low-noise amplifier link are both in the on state; the downlink receiving low-noise amplifier link is in the off state.

[0041] When the integrated base station operates in crossband mode, uplink and downlink operate in time-division multiplexing, with both operating in frequency band F1. During transmission, the transmit / receive switch is switched to the RPD reflection power detection path, meaning the moving end of the transmit / receive switch is connected to the stationary end of the reflection power detection link; the moving end of the mode switch is connected to the stationary end of the uplink receiving low-noise amplifier link; both the transmit amplification link and the uplink receiving low-noise amplifier link are in the ON state; the downlink receiving low-noise amplifier link is in the OFF state. During reception, the transmit / receive switch is switched to the crossband communication sweep frequency link, meaning the moving end of the transmit / receive switch is connected to the stationary end of the crossband communication sweep frequency link; the mode switch is switched to the F1 low-noise amplifier path, and the moving end of the mode switch is connected to the stationary end of the downlink receiving low-noise amplifier link; the transmit amplification link is OFF, and the downlink receiving low-noise amplifier link is OFF.

[0042] The integrated base station uses 5G wireless subframes as the smallest unit for 5G access and crosslinking, and adopts time-division scheduling to achieve seamless switching between 5G and crosslinking channels. During the mode switching process, the terminal services that have already been connected to 5G are not interrupted. No additional backhaul channel hardware configuration is required, which greatly improves the flexibility of base station use and solves the problems of large size, high power consumption, and inability to perceive downlink spectrum environment of base stations with access and inter-site networking capabilities in FDD mode. Attached Figure Description

[0043] Figure 1 This is a logic block diagram of an embodiment of an FDD-based 5G and horizontally integrated base station according to the present invention.

[0044] Figure 2 This is a logic block diagram of the radio frequency front-end module in an embodiment of an FDD-based 5G and horizontally integrated base station of this utility model.

[0045] Figure 3 This is a schematic diagram illustrating the networking operation of an embodiment of an FDD-based 5G and horizontally integrated base station according to this utility model. Detailed Implementation

[0046] The following detailed description illustrates the specific implementation method:

[0047] The reference numerals in the accompanying drawings include: integrated base station 1, power module 2, device interface 3, baseband unit 4, radio frequency unit 5, radio frequency front-end module 6, radio frequency duplexer 7, antenna 8, MCU controller 61, transmit amplification link 62, output power coupler 63, circulator 64, transmit / receive switching switch 65, reflection coupler 66, downlink receive low-noise amplifier link 67, uplink receive low-noise amplifier link 68, mode switching switch 69.

[0048] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In the description of this specification, it should be understood that the directional terms such as "upper," "lower," "left," and "right" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that one element is connected to another element "upper," "lower," "left," or "right," it can be directly connected to the other element "upper," "lower," "left," or "right," or indirectly connected to the other element "upper," "lower," "left," or "right" through an intermediate element.

[0050] The abbreviations in this solution are as follows: FDD: Frequency Division Duplex; IAB: Integrated Access Backhaul; DU: Distributed Unit; TDD: Time Division Duplex; FEC: Forward Error Correction Coding; HARQ: Hybrid Automatic Repeat Request; OPD: Output Power Detection; MIMO: Multiple Input Multiple Output; RPD: Reflection Power Detection; DPD: Digital Predistortion.

[0051] The basic implementation examples are as follows: Figure 1 As shown: An FDD-based 5G and horizontally integrated base station includes: a housing, a power module 2, an equipment interface 3, a baseband unit 4, a radio frequency unit 5, a radio frequency front-end module 6, a radio frequency duplexer 7, and an antenna 8.

[0052] The power module 2, device interface 3, baseband unit 4, radio frequency unit 5, radio frequency front-end module 6, and radio frequency duplexer 7 are installed or integrated in the housing;

[0053] Antenna 8 is mounted outside the housing and passes through the housing via an antenna port on the housing surface to connect to the radio frequency duplexer 7.

[0054] The power module 2 is connected to the baseband unit 4, the radio frequency unit 5, and the radio frequency front-end module 6, and is used to supply power to the baseband unit 4, the radio frequency unit 5, and the radio frequency front-end module 6; and the baseband unit 4, the radio frequency unit 5, the radio frequency front-end module 6, and the radio frequency duplexer 7 are connected in sequence.

[0055] Device interface 3 includes: power interface, service interface, and maintenance interface; wherein the service interface includes, but is not limited to: Ethernet interface, optical port, etc.

[0056] Baseband Unit 4 is used for processing 5G core network, physical layer, and protocol stack, as well as FEC encoding / decoding transmission channels, HARQ merging, and radio frequency processing. Specifically, Baseband Unit 4 is the system operation center, controlling and driving other functional modules, realizing data forwarding and interaction between modules, and has the ability to process 5G core network, physical layer, and protocol stack, including RRC, PDCP, RLC, and MAC processing; as well as FEC encoding / decoding transmission channels, HARQ merging, and radio frequency processing.

[0057] The radio frequency (RF) unit 5 is used to process the conversion between digital signals and RF signals for 5G access and inter-site self-organizing networks, and to interconnect the RF transceiver channel signals with the RF front-end module 6. It communicates with other terminals or base stations via antenna 8. It supports TDD / FDD operating modes and at least two transmit (TX) channels, two receive (RX) channels, and one feedback (ORX) channel. Optionally, the feedback ORX channel can be time-division switched to two feedback channels via a single-pole double-throw (SPDT) RF switch. The TX, RX, and feedback channels are respectively connected to the TX, RX, and FB interfaces of the RF front-end module 6. The RF unit 5 includes an RF transceiver and a digital front-end module. The digital front-end module uses an FPGA XC7Z035-2FFG900I for 5G access and inter-site self-organizing network waveform baseband signal processing, and communicates with the RF transceiver via a JESD204B high-speed interface for uplink and downlink communication. The RF transceiver uses an ADRV9025BBCZ for the conversion between digital intermediate frequency (IF) signals transmitted by the digital front-end module FPGA and analog RF signals.

[0058] The radio frequency front-end module 6 is used to amplify the wireless transceiver signals of the 5G access channel and the inter-site cross-connection network channel, as well as to select the channel switching.

[0059] Specifically, such as Figure 2 As shown, the RF front-end module 6 includes: an MCU controller 61, a transmit amplification link 62, an output power coupler 63, a circulator 64, a transmit / receive switching switch 65, a reflection coupler 66, a downlink receive low-noise amplifier link 67, an uplink receive low-noise amplifier link 68, and a mode switching switch 69.

[0060] The MCU controller 61 is used for radio frequency front-end control and status detection.

[0061] The transmit amplification link 62 is used for power amplification of the 5G / crosslink downlink band F1. It can be turned on and off by an enable signal. The input of the transmit amplification link 62 is connected to the radio frequency unit 5, and the output is connected to the output power coupler 63.

[0062] The output power coupler 63 is used for output power detection OPD. Specifically, it sends the output power feedback signal to the radio frequency unit 5 for DPD processing and transmission signal power strength detection, and outputs the transmission signal to the circulator 64.

[0063] Circulator 64 is used to increase transmit / receive isolation and is connected to output power coupler 63, transmit / receive switching switch 65 and RF duplexer 7 respectively.

[0064] The transmit / receive switch 65 is used to switch between the reflected power detection link and the cross-link communication frequency sweep link. Specifically, the transmit / receive switch 65 is a single-pole double-throw switch, with its moving end connected to the circulator 64 and its two stationary ends connected to the reflected power detection link and the cross-link communication frequency sweep link, respectively. When the moving end of the transmit / receive switch 65 is connected to the stationary end connected to the reflected power detection link, it is connected to the reflected power detection link; when the moving end is connected to the stationary end connected to the cross-link communication frequency sweep link, it is connected to the cross-link communication frequency sweep link.

[0065] The reflected power detection link includes: a reflected coupler 66; the reflected coupler 66 is used to detect the reflected power and the VSWR of the antenna port 8; the reflected coupler 66 is connected to the stationary terminal of the transmit / receive switch 65;

[0066] The cross-connected communication frequency sweep link includes: downlink receiving low-noise amplifier link 67, uplink receiving low-noise amplifier link 68, and mode switching switch 69.

[0067] The downlink receiving low-noise amplifier link 67 is used to amplify the downlink sweep frequency signal and the cross-connect receiving signal, and can be turned on and off by the enable signal; the input terminal of the downlink receiving low-noise amplifier link 67 is connected to the stationary terminal of the transmit / receive switching switch 65; the output terminal of the downlink receiving low-noise amplifier link 67 is connected to the stationary terminal of the mode switching switch 69.

[0068] The uplink receiving low-noise amplifier link 68 is used to amplify the uplink sweep frequency signal and the 5G access receiving signal, and can be turned on and off by the enable signal; the input of the uplink receiving low-noise amplifier link 68 is connected to the RF duplexer 7, and the output is connected to the stationary end of the mode switching switch 69.

[0069] The mode switching switch 69 is used to switch between FDD 5G access mode and crossover mode; specifically, the mode switching switch 69 adopts a single-pole double-throw switch, with the moving end connected to the radio frequency unit 5, and the two stationary ends connected to the downlink receiving low-noise amplifier link 67 and the uplink receiving low-noise amplifier link 68 respectively; in this embodiment, two sets of radio frequency front-end modules 6 are set to form 2*2 MIMO.

[0070] The RF duplexer 7 is used for filtering different frequency bands of FDD uplink and downlink and combining the 8 ports of the antenna. The downlink bandpass filter passes through the F1 frequency band, and the uplink bandpass filter passes through the F2 frequency band. The uplink and downlink frequency bands have no overlap and there is a certain guard band interval. In this embodiment, two sets of RF duplexers 7 are connected to two sets of RF front-end modules 6 to form two antenna 82*2 MIMO.

[0071] Antenna 8 is used to radiate wireless signals for 5G access and inter-site ad hoc networks.

[0072] In this embodiment, the baseband unit 4 uses LX2160XE72029B, the RF unit 5 uses ADRV9025BBCZ, the MCU controller 61 uses STM8L151C8T6, the transmit amplification link 626 uses NV2804, the output power coupler 63 uses a microstrip coupling circuit, the circulator 64 uses DP0275C, the transmit / receive switching switch 65 uses FW3101, the reflection coupler 66 uses a microstrip coupling circuit, the downlink receive low-noise amplifier link 67 uses FW1109, the uplink receive low-noise amplifier link 68 uses FW1109, and the mode switching switch 69 uses FW3104.

[0073] The specific implementation process is as follows: An FDD-based 5G and crosslink integrated base station adopts an integrated dual-antenna 8-design of distributed core network + BBU + RRU. 5G access operates in the conventional FDD frequency band, downlink frequency band F1, uplink frequency band F2. 5G access supports 2T2R. The crosslink between stations reuses the 5G radio frequency front-end hardware architecture. Both uplink and downlink operate in the F1 frequency band. Taking the 5G wireless subframe as the smallest dimension unit, the seamless switching of 5G / crosslink channels is achieved by using time-division scheduling.

[0074] Specifically, the integrated base station 1 operates in FDD 5G access mode. The moving end of the transmit / receive switch 65 is connected to the stationary end of the reflected power detection link, and the moving end of the mode switch 69 is connected to the stationary end of the uplink receiving low-noise amplifier link 68. The transmit amplification link 62 and the uplink receiving low-noise amplifier link 68 are both in the open state. The downlink receiving low-noise amplifier link 67 is in the closed state.

[0075] When the integrated base station 1 operates in crossband mode, it operates in time-division multiplexing for uplink and downlink, both operating in frequency band F1. During transmission, the transmit / receive switch 65 switches to the RPD reflection power detection path, i.e., the moving end of the transmit / receive switch 65 is connected to the stationary end of the reflection power detection link; the moving end of the mode switch 69 is connected to the stationary end of the uplink receiving low-noise amplifier link 68; both the transmit amplification link 62 and the uplink receiving low-noise amplifier link 68 are in the open state; the downlink receiving low-noise amplifier link 67 is in the closed state. During reception, the transmit / receive switch 65 switches to the crossband communication sweep frequency link, i.e., the moving end of the transmit / receive switch 65 is connected to the stationary end of the crossband communication sweep frequency link; the mode switch 69 switches to the F1 low-noise amplifier path, and the moving end of the mode switch 69 is connected to the stationary end of the downlink receiving low-noise amplifier link 67; the transmit amplification link 62 is closed, and the downlink receiving low-noise amplifier link 67 is open.

[0076] The 5G access and crosslinking of the integrated base station 1 uses 5G wireless subframes as the smallest dimensional unit and adopts time-division scheduling to achieve seamless switching of 5G / crosslinking channels. During the mode switching process, the terminal services that have been connected to 5G are not interrupted.

[0077] The integrated base station 1 has uplink and downlink spectrum scanning and sensing capabilities. After the external spectrum environment is filtered by the antenna 8 and the RF duplexer 7, only the downlink frequency band F1 and the uplink frequency band F2 can be processed by the RF front-end module 6. During downlink frequency scanning, the integrated base station 1 is in a silent or unscheduled terminal service state. After the downlink frequency scanning signal passes through the circulator 64, it is connected to the downlink receiving low-noise amplifier link 67 through the transmit / receive switching switch 65 for amplification. Then it passes through the mode switching switch 69 to reach the RF unit 5 for signal processing and energy identification to obtain the F1 frequency band spectrum information of the current external environment.

[0078] Uplink and downlink frequency scanning are not performed simultaneously. Uplink frequency scanning and 5G reception share the downlink receiving low-noise amplifier link 67. During uplink frequency scanning, the uplink frequency scanning signal passes through the uplink receiving low-noise amplifier link 68 and the switching switch and then directly reaches the radio frequency unit 5 for signal processing and energy identification in order to obtain the F2 band spectrum information of the current external environment.

[0079] The integrated base station 1 can target and eliminate interference frequencies and rationally plan frequency resources based on the current uplink and downlink frequency scanning information, which can further improve communication reliability. It can also adjust the frequency planning of all integrated base station 1 nodes in the current cross-connected topology network as the external spectrum environment changes.

[0080] like Figure 3 As shown, when integrated base station 1 operates in FDD 5G access mode, the downlink frequency band is F1 and the uplink frequency band is F2. User terminal UE10 can access integrated base station 1 through the 5G link to realize the transmission of voice, video, images, and short messages. When integrated base station 1 operates in crossband mode, both uplink and downlink operate in the F1 frequency band. Multiple integrated base stations 1 can establish a crossband decentralized self-organizing network. At the same time, integrated base station 1 can also relay to another integrated base station 1 through multiple hops to realize the decentralized transmission of distributed core network data between integrated base stations 1, ensuring that all terminals accessed by integrated base station 1 in the network can communicate with each other. During the 5G / crossband mode switching process of integrated base station 1, the service of user terminal UE10 that has already accessed 5G is not interrupted.

[0081] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An FDD-based 5G and horizontally integrated base station, characterized in that, include: Housing, power module, baseband unit, RF unit, RF front-end module, RF duplexer, and antenna; The power module, baseband unit, RF unit, RF front-end module, and RF duplexer are mounted or integrated within the housing; The antenna is mounted outside the housing and passes through the housing via an antenna port on the housing surface to connect to the radio frequency duplexer. The power module is connected to the baseband unit, the radio frequency unit, and the radio frequency front-end module to supply power to them; and the baseband unit, the radio frequency unit, the radio frequency front-end module, and the radio frequency duplexer are connected in sequence. The baseband unit is used for processing 5G core network, physical layer, protocol stack, as well as FEC encoding / decoding transmission channel, HARQ combining, and radio frequency processing; The radio frequency unit is used to process the mutual conversion between digital signals and radio frequency signals in 5G and inter-site ad hoc networks, and to interconnect the signals of the radio frequency transceiver channel with the radio frequency front-end module, so as to communicate with other terminals or base stations through the antenna; The radio frequency front-end module is used to amplify wireless transceiver signals and select channels for 5G access channels and inter-site cross-connection networking channels. Radio frequency duplexer, used for filtering different frequency bands of FDD uplink and downlink and antenna port combining; Antennas are used to radiate wireless signals for 5G access and inter-site ad hoc networks.

2. The FDD-based 5G and horizontally integrated base station according to claim 1, characterized in that, Also includes: Device interface; The device interface is installed or integrated within the housing; The device interfaces include: a power interface, a service interface, and a maintenance interface.

3. The FDD-based 5G and horizontally integrated base station according to claim 1, characterized in that, The radio frequency unit includes: a radio frequency transceiver and a digital front-end module; The digital front-end module is used for 5G access and inter-site self-organizing network waveform baseband signal processing, and communicates uplink and downlink with the RF transceiver through a high-speed interface; the RF transceiver is used for mutual conversion between digital intermediate frequency signals transmitted by the digital front-end module FPGA and analog RF signals.

4. The FDD-based 5G and horizontally integrated base station according to claim 3, characterized in that, The radio frequency front-end module includes: an MCU controller, a transmit amplification link, an output power coupler, a circulator, a transmit / receive switching switch, a reflective coupler, a downlink receive low-noise amplifier link, an uplink receive low-noise amplifier link, and a mode switching switch. The MCU controller is used for RF front-end control and status detection. The transmit amplification link is used for power amplification in the 5G / crosslink downlink band. It can be turned on and off by an enable signal. The input of the transmit amplification link is connected to the radio frequency unit, and the output is connected to the output power coupler. The output power coupler is used for transmit output power detection (OPD). The circulator is used to increase transmit / receive isolation and is connected to the output power coupler, transmit / receive switching switch and RF duplexer respectively. The transmit / receive switch is used to switch between the reflected power detection link and the cross-connected communication frequency sweep link; The reflected power detection link includes: a reflection coupler; the reflection coupler is used to detect reflected power and antenna port VSWR; The cross-connected communication frequency sweep link includes: downlink receiving low-noise amplifier link, uplink receiving low-noise amplifier link, and mode switching switch; The downlink receiving low-noise amplifier link is used to amplify downlink sweep frequency signals and cross-connected receiving signals; The uplink receiving low-noise amplifier link is used to amplify uplink frequency sweep signals and 5G access receiving signals; The mode switch is used to switch between FDD 5G access mode and crossover mode.

5. The FDD-based 5G and horizontally integrated base station according to claim 4, characterized in that, The transmit / receive switching switch is a single-pole double-throw switch. Its moving end is connected to the circulator, and its two stationary ends are connected to the reflection power detection link and the cross-linked communication frequency sweep link, respectively. When the moving end of the transmit / receive switching switch is connected to the stationary end connected to the reflection power detection link, it is connected to the reflection power detection link. When the moving end is connected to the stationary end connected to the cross-linked communication frequency sweep link, it is connected to the cross-linked communication frequency sweep link. The reflective coupler is connected to the stationary terminal of the transmit / receive switch.

6. The FDD-based 5G and horizontally integrated base station according to claim 5, characterized in that, The mode switching switch is a single-pole double-throw switch, with the moving end connected to the radio frequency unit and the two stationary ends connected to the downlink receiving low-noise amplifier link and the uplink receiving low-noise amplifier link, respectively. The input terminal of the downlink receiving low-noise amplifier link is connected to the stationary terminal of the transmit / receive switching switch, and the output terminal of the downlink receiving low-noise amplifier link is connected to the stationary terminal of the mode switching switch. The input terminal of the uplink receiving low-noise amplifier link is connected to the radio frequency duplexer, and the output terminal of the uplink receiving low-noise amplifier link is connected to the stationary terminal of the mode switching switch.

7. The FDD-based 5G and horizontally integrated base station according to claim 6, characterized in that, Two sets of RF duplexers are connected to two sets of RF front-end modules to form a two-antenna 2*2 MIMO.

Images