CN220123081U - Small family base station distribution system for network cable transmission - Google Patents
Small family base station distribution system for network cable transmission Download PDFInfo
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- CN220123081U CN220123081U CN202320970048.XU CN202320970048U CN220123081U CN 220123081 U CN220123081 U CN 220123081U CN 202320970048 U CN202320970048 U CN 202320970048U CN 220123081 U CN220123081 U CN 220123081U
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Abstract
The utility model relates to the technical field of wireless base stations, and discloses a home small base station distribution system for network cable transmission, which specifically comprises host equipment, slave equipment, an in-home optical fiber and an indoor network cable, wherein the host equipment and the slave equipment are connected with each other through the indoor network cable, the host equipment is connected with a telecom operator OLT through the in-home optical fiber, the host equipment comprises an O-RAN CU/DU white box, a 10G PON access unit, an IEEE1588 boundary clock unit and an Ethernet main exchange unit, and the slave equipment comprises an O-RAN RU white box, a WIFI6Mesh route, an IEEE1588 slave clock unit and an Ethernet slave exchange unit; the utility model is a light comprehensive service distribution system, and simultaneously realizes the full-house deep coverage of a 4G/5G cellular mobile network and a WIFI6 wireless local area network, thereby having the characteristics of low cost, high integration and good cost performance, and being particularly suitable for network upgrading and reconstruction of indoor small scenes such as families, street shops, small enterprises and the like.
Description
Technical Field
The utility model relates to the technical field of wireless base stations, in particular to a home small base station distribution system for network cable transmission.
Background
The distributed pico-cell is an active low-power novel indoor distribution system, has been widely deployed in large-scale indoor scenes with high value, high telephone traffic and open interior such as transportation hubs, CBD office buildings, stadiums and business centers, and can simultaneously meet the deep coverage and capacity growth of an indoor wireless network. Typical products of the host device manufacturer are e.g. sampsite, well Qcell, ericsson RDS, etc.
The distributed pico-cell comprises a three-level network architecture of a baseband unit BBU, an expansion unit RUB, a covering unit pRRU and the like, wherein the BBU and the RUB generally adopt a standard 19-inch server chassis of 1U/2U, the pRRU is relatively small but generally requires wall-mounted and roof-mounted, and the pRRU is generally required to be remotely and intensively supplied with power by the RUB through POE network ports or photoelectric composite cables. Because of the limitations of equipment volume, equipment weight, equipment installation, equipment electricity taking and the like, the traditional distributed pico-base station cannot be directly deployed in small indoor scenes such as villas, large floors, shops and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a home small base station distribution system for network cable transmission, which has the advantages of smaller volume, lower cost and higher integration of split small base stations.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the system specifically comprises host equipment, slave equipment, an in-home optical fiber and an indoor network cable, wherein the host equipment and the slave equipment are connected with each other through the indoor network cable, and the host equipment is connected with a telecom operator OLT through the in-home optical fiber;
the host equipment comprises an O-RAN CU/DU white box for realizing L2/L3 protocol stack processing, physical layer baseband processing and ROE data framing and de-framing, a 10G PON access unit for realizing XG-PON/10G EPON asymmetric network ONU functions, an IEEE1588 boundary clock unit for realizing superior clock extraction, 1PPS/TOD output, PTP message processing and the like and providing synchronous clock reference for the O-RAN CU/DU white box, and an Ethernet main switching unit for realizing fusion exchange of O-RAN small base station service and broadband local area network service in the host equipment and Ethernet data transmission between the host equipment and the slave equipment;
the slave device comprises an O-RAN RU white box for realizing ROE data framing and de-framing, physical layer baseband processing, digital front end processing and micropower signal amplification, a WIFI6Mesh route for realizing WIFI 2.4G/5G dual-frequency concurrency and Mesh networking unified roaming, an IEEE1588 slave clock unit for realizing superior clock extraction, 1PPS/TOD output, PTP message processing and the like and providing synchronous clock reference for the O-RAN RU white box, and an Ethernet slave switching unit for realizing fusion switching of O-RAN small base station service and broadband local area network service in the slave device and Ethernet data transmission of the slave device and the host device.
As a preferable technical scheme of the utility model, the O-RAN CU/DU white box of the host equipment supports NR N1 frequency band and LTE B3 frequency band, and supports configuration of a single-mode 2T2R wireless cell or a dual-mode 1T1R wireless cell.
As a preferred technical solution of the present utility model, the 10G PON access unit of the host device includes an SC/PC interface, a 10G PON BOB module, and a 10G PON MAC module.
As a preferable technical scheme of the utility model, the IEEE1588 boundary clock unit of the host equipment comprises a GPS antenna, a GNSS time service module and an IEEE1588 clock module.
As a preferred solution of the present utility model, the ethernet main switching unit of the host device includes a high-speed ethernet switching module, a first/second/third/fourth/fifth gigabit PHY module, and a first/second/third/fourth/fifth RJ45 interface.
As a preferable technical scheme of the utility model, the O-RAN RU white box of the slave equipment supports NR N1 frequency band and LTE B3 frequency band, and supports configuration of a single-mode 2T2R wireless cell or a dual-mode 1T1R wireless cell.
As a preferable technical scheme of the utility model, the WIFI6Mesh route of the slave device supports 2.4G 2T2R/HT40M bandwidth and 5.8G2T2R/HT80M bandwidth.
As a preferable technical scheme of the utility model, the IEEE1588 slave clock unit of the slave device comprises an IEEE1588 clock module.
As a preferred technical solution of the present utility model, the ethernet slave switching unit of the slave device includes a first/second/third RJ45 interface, a first/second/third gigabit PHY module, and a high-speed ethernet switching module.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model is a light comprehensive service distribution system, and simultaneously realizes the full-house deep coverage of a 4G/5G cellular mobile network and a WIFI6 wireless local area network, thereby having the characteristics of low cost, high integration and good cost performance, and being particularly suitable for network upgrading and reconstruction of indoor small scenes such as families, street shops, small enterprises and the like.
Drawings
FIG. 1 is a schematic diagram of a system according to the present utility model;
fig. 2 is a base station service processing diagram of the present utility model;
fig. 3 is a diagram of broadband service processing according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the present utility model provides a home base station distribution system for network cable transmission, where the host device includes: an O-RAN CU/DU white box, a 10G PON access unit 1, an IEEE1588 boundary clock unit 2, an Ethernet main exchange unit 3 and the like.
The O-RAN CU/DU white box supports IPSec tunnel protocol, supports IPv4 single stack/IPv 6 single stack/IPv 4 and IPv6 double stack, accesses the base station gateway of operation Shang Xiao in an Internet mode through the Ethernet main exchange unit 3 to open an IPSec tunnel, and establishes N1 and N2 interfaces with a 5GC control surface and an N3 interface with a 5GC user surface in the tunnel.
The O-RAN CU/DU white box completes the L2 and L3 protocol stack processing specified by 3GPP, including L3 Control Plane (RRC/NGAP/XNAP/SON/OAM), L2 and User Plane (SDAP/PDCP/RLC/MAC/Scheduler), etc. The O-RAN CU/DU white box converts the physical IQ data into eCPRI or ROE protocol frames, which are transmitted to the respective slave devices through the ethernet master switching unit 3. The O-RAN CU/DU white box obtains the 1PPS/TOD clock reference from IEEE1588 boundary clock unit 2.
The 10G PON unit 1 supports XGPON1 (uplink 2.488 Gbps/downlink 9.953 Gbps) asymmetric network or 10G EPON (uplink 1.25 Gbps/downlink 10.3125 bps) asymmetric network through an optical fiber access operator OLT, and supports a multi-megafamily broadband at the highest.
Wherein, the 10G PON access unit 1 establishes a 2.5G Ethernet channel with the O-RAN CU/DU white box, and provides reliable return of the O-RAN CU/DU white box and the operator 5GC/EPC core network. The 10G PON access unit 1 establishes a 10GE Ethernet channel with the Ethernet main exchange unit 3 through an XFI interface, and supports high-speed backhaul of broadband Internet service. The 10G PON access unit 1 supports IEEE1588 v2, acquires timing from the upper OLT in 1588Slave role, and forwards the timing to the IEEE1588 boundary clock unit 2.
The IEEE1588 boundary clock unit 2 integrates a PTP clock recovery algorithm, integrates a hardware accurate time stamp and supports acquisition of an upper clock from a GPS satellite or an Ethernet line. The IEEE1588 boundary clock unit 2 transmits a TOD message to the O-RAN CU/DU white box through the UART interface and transmits a 1PPS seconds pulse to the O-RAN CU/DU white box in TTL level format. The IEEE1588 boundary clock unit 2 is connected with the Ethernet master switching unit 3 through an SGMII interface, handshakes are established with the IEEE1588 slave clock units 5 of each slave device, and PTP messages are sent and received through an Ethernet line so as to transfer a high-precision clock reference.
The Ethernet main switching unit 3 establishes a 10GE/2.5GE/GE Ethernet channel with the 10G PON access unit 1, the O-RAN CU/DU white box and the IEEE1588 boundary clock unit 2 respectively, and is used as a convergence point of various services such as O-RAN small base station forwarding, broadband local area network, PTP clock message and the like, and different service data flows are distinguished through L2 switching and VLAN isolation. The Ethernet master exchange unit 3 establishes a gigabit high-speed Ethernet channel with each slave device through CAT5e or CAT6 network lines distributed indoors, and supports various services such as O-RAN small base station forwarding, broadband local area network, PTP clock message and the like between the host device and the slave device to share transmission bandwidth.
Referring to fig. 1, the slave device includes: O-RAN RU white box, WIFI6Mesh routing, ethernet slave switching unit 4, IEEE1588 slave clock unit 5, etc.
The O-RAN RU white box receives and transmits ROE data frames from the exchange unit 4 through the Ethernet, frames and frames of eCPRI or ROE protocol are decoded, physical layer baseband signal processing is completed, digital front end processing comprises DDU/DDC digital frequency conversion and CFR/DPD peak-to-average power ratio nonlinearity, digital-to-analog/analog-to-digital conversion, analog radio frequency amplification and the like, and an air interface is established with the 4G/5G smart phone. The O-RAN RU white box acquires the high precision synchronization reference delivered by the host device from the clock unit 5 through IEEE 1588.
The WIFI6Mesh route receives and transmits internet service data from the switching unit 4 through ethernet, converts the internet service data into a wireless broadband signal of 2.4G WLAN/5G WLAN conforming to 802.11AX/AC/N protocol, and establishes an air interface with a WIFI service terminal (e.g., smart phone, smart home, VR game machine). And the WIFI6Mesh route establishes a Mesh networking channel with other slave devices through the Ethernet slave switching unit 4 to coordinate cross-device roaming and switching, and realizes the unified SSID of the whole house.
The Ethernet slave switching unit 4 establishes a GE Ethernet channel with an O-RAN RU white box, a WIFI6Mesh route and an IEEE1588 slave clock unit 5 through an SGMII interface, and is used as a convergence point of various services such as an O-RAN small base station forward, a broadband local area network, a PTP clock message and the like, and different service data flows are distinguished through L2 switching and VLAN isolation. The Ethernet slave exchange unit 4 establishes a gigabit high-speed Ethernet channel with the host equipment through CAT5e or CAT6 network cables distributed indoors, and supports various services such as O-RAN small base station forwarding, broadband local area network, PTP clock message and the like between the host equipment and the slave equipment to share transmission bandwidth.
The IEEE1588 Slave clock unit 5 is connected with the ethernet Slave switching unit 4 through an SGMII interface, and establishes a handshake with the IEEE1588 boundary clock unit 2 of the host device, and sends and receives PTP messages through an ethernet line as a 1588Slave role. IEEE1588 sends TOD messages from clock unit 5 over UART interface to O-RAN RU whitebox and transmits 1PPS second pulses in TTL level format to O-RAN RU whitebox.
Referring to fig. 2, a small cell service processing procedure of the present utility model is described.
Wherein, the passback direction: the slave device O-RAN RU white box receives the uplink data (control plane and user plane) of the user terminal, and after low noise amplification filtering/mixing analog-to-digital conversion/digital front end processing/physical layer baseband processing, sends the uplink data to the ethernet slave switching unit 4 in the form of ROE ethernet data. The ROE data frames reported by the slave devices are converged to the Ethernet main switching unit 3 of the host device through an indoor network cable, and then are forwarded to the O-RAN CU/DU white box in a centralized mode, the original control plane and user plane are recovered after ROE frame decomposition, physical layer baseband processing and L2/L3 protocol stack processing, a small base station gateway is sent from the 10G PON access unit 1 through an IPSEC tunnel, and the small base station gateway converges control plane signaling and then sends the converged control plane signaling to the operator 5GC/EPC core network.
Wherein, forward direction: downstream data (control plane and user plane) of the operator 5GC/EPC core network is transmitted to the O-RAN CU/DU white box by the small base station gateway and the 10G PON unit 1 of the host equipment through an IPSEC tunnel, is converted into an ROE Ethernet data format after being processed by an L2/L3 protocol stack and being processed by a physical layer baseband, and is broadcast, multicast or distributed according to a destination MAC address by an Ethernet main exchange unit 3. The Ethernet of the slave device directionally forwards the ROE data frame to the O-RAN RU white box from the switching unit 4, and sends the ROE data frame to the user terminal after ROE frame decomposition/physical layer baseband processing/digital front end processing/digital-to-analog conversion/frequency mixing conversion/micro power amplification.
Referring to fig. 3, a broadband service processing flow of the present utility model is described.
Specifically, the IP data packet sent by the internet server is accessed to the user's home through the PON metropolitan area network of the telecom operator, and sequentially sent to the home user terminal (smart phone, PC, notebook, fax, VR game machine, etc.) through the 10G PON unit 1 of the host device, the ethernet master switching unit 3, the ethernet slave switching unit 4 of the slave device, and the WIFI6MESH route according to the destination address. The uplink direction and so on.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A small family base station distribution system for network cable transmission is characterized in that: the system specifically comprises a host device, a slave device, a home-entering optical fiber and an indoor network cable, wherein the host device and the slave device are connected with each other through the indoor network cable, and the host device is connected with an OLT (optical line terminal) of a telecom operator through the home-entering optical fiber;
the host equipment comprises an O-RAN CU/DU white box for realizing L2/L3 protocol stack processing, physical layer baseband processing and ROE data framing and de-framing, a 10G PON access unit for realizing XG-PON/10G EPON asymmetric network ONU function, an IEEE1588 boundary clock unit for realizing superior clock extraction, 1PPS/TOD output, PTP message processing and providing synchronous clock reference for the O-RAN CU/DU white box, and an Ethernet main switching unit for realizing fusion exchange of O-RAN small base station service and broadband local area network service in the host equipment and Ethernet data transmission between the host equipment and the slave equipment;
the slave device comprises an O-RAN RU white box for realizing ROE data framing and de-framing, physical layer baseband processing, digital front end processing and micropower signal amplification, a WIFI6Mesh route for realizing WIFI 2.4G/5G dual-frequency concurrency and Mesh networking unified roaming, an IEEE1588 slave clock unit for realizing superior clock extraction, 1PPS/TOD output, PTP message processing and providing synchronous clock reference for the O-RAN RU white box, and an Ethernet slave switching unit for realizing fusion switching of O-RAN small base station service and broadband local area network service in the slave device and Ethernet data transmission of the slave device and the host device.
2. A network cable transmission home base station distribution system according to claim 1, wherein: the O-RAN CU/DU white box of the host equipment supports NR N1 frequency band and LTE B3 frequency band, and supports configuration of a single-mode 2T2R wireless cell or a dual-mode 1T1R wireless cell.
3. A network cable transmission home base station distribution system according to claim 1, wherein: the 10G PON access unit of the host equipment comprises an SC/PC interface, a 10G PON BOB module and a 10G PON MAC module.
4. A network cable transmission home base station distribution system according to claim 1, wherein: the IEEE1588 boundary clock unit of the host equipment comprises a GPS antenna, a GNSS time service module and an IEEE1588 clock module.
5. A network cable transmission home base station distribution system according to claim 1, wherein: the Ethernet main switching unit of the host device comprises a high-speed Ethernet switching module, a first/second/third/fourth/fifth gigabit PHY module and a first/second/third/fourth/fifth RJ45 interface.
6. A network cable transmission home base station distribution system according to claim 1, wherein: and the O-RAN RU white box of the slave equipment supports NR N1 frequency band and LTE B3 frequency band, and supports configuration of a single-mode 2T2R wireless cell or a dual-mode 1T1R wireless cell.
7. A network cable transmission home base station distribution system according to claim 1, wherein: the WIFI6Mesh route of the slave device supports 2.4G 2T2R/HT40M bandwidth, 5.8G2T2R/HT80M bandwidth.
8. A network cable transmission home base station distribution system according to claim 1, wherein: the IEEE1588 slave clock unit of the slave device comprises an IEEE1588 clock module.
9. A network cable transmission home base station distribution system according to claim 1, wherein: the Ethernet slave switching unit of the slave device comprises a first/second/third RJ45 interface, a first/second/third gigabit PHY module and a high-speed Ethernet switching module.
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| CN202320970048.XU CN220123081U (en) | 2023-04-25 | 2023-04-25 | Small family base station distribution system for network cable transmission |
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| CN202320970048.XU CN220123081U (en) | 2023-04-25 | 2023-04-25 | Small family base station distribution system for network cable transmission |
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