A 5g and v2x communication function integrated circuit

Abstract

The embodiment of the utility model relates to hardware communication technical field, especially a kind of 5G and V2X communication function integrated circuit, comprising: 5G communication module, V2X communication module, ethernet chip and protocol conversion module;The 5G communication module is connected with the ethernet chip by SGMII bus;The V2X communication module is connected with the protocol conversion module, and then is connected with the ethernet chip by RGMII bus;The ethernet chip is connected with at least one external device by ethernet interface.The scheme is integrated into the same hardware structure by 5G communication and V2X communication and rewires, reduces the overall volume of both in vehicle environment, and simplifies wiring.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of hardware communication technology, and in particular to an integrated circuit with 5G and V2X communication functions. Background Technology

[0002] With the maturity of 5G and vehicle-road cooperative technologies, C-V2X has become a core supporting technology for autonomous driving. It adopts a dual-mode architecture of PC5 direct communication and Uu cellular communication: the former realizes low-latency interaction between vehicles and surrounding entities (vehicles, roads, and people) through dedicated frequency bands, while the latter relies on 5G networks to realize wide-area communication interaction between vehicles and the cloud and remote platforms.

[0003] In current autonomous driving hardware systems, 5G communication and V2X communication are handled by two separate devices: a 5G CPE device and a V2X communication device. This separate solution is the mainstream implementation method in the industry. However, this separate hardware solution has significant drawbacks, specifically: each of the two independent devices needs its own casing, power module, and heat dissipation structure, resulting in a large overall footprint and cumbersome wiring in the vehicle environment. Utility Model Content

[0004] The purpose of this application is to provide an integrated circuit for 5G and V2X communication functions. By integrating 5G communication and V2X communication into the same hardware structure and rewiring, the overall volume occupied by the two in the vehicle environment is reduced and the wiring is simplified.

[0005] This application provides an integrated circuit for 5G and V2X communication functions, including: a 5G communication module, a V2X communication module, an Ethernet chip, and a protocol conversion module; the 5G communication module is connected to the Ethernet chip via an SGMII bus; the V2X communication module is connected to the protocol conversion module and then connected to the Ethernet chip via an RGMII bus; the Ethernet chip is connected to at least one external device via an Ethernet interface.

[0006] In addition, the Ethernet chip described above includes: a first Ethernet chip and a second Ethernet chip; the 5G communication module is connected to the first Ethernet chip, and the V2X communication module is connected to the second Ethernet chip; the first Ethernet chip and the second Ethernet chip are connected via an MDI bus.

[0007] In addition, the protocol conversion module described above includes: an Ethernet bridge controller and a USB switch; the V2X communication module is connected to the USB switch via a USB interface; the USB switch is connected to the Ethernet bridge controller via a USB interface; and the Ethernet bridge controller is connected to the second Ethernet chip via an RGMII bus.

[0008] Additionally, the Ethernet bridging controller mentioned above is the LAN7801.

[0009] In addition, the 5G and V2X communication function integrated circuit mentioned above also includes: a GPS module, which is connected to the V2X communication module and is used to provide serial port signals and PPS signals to the V2X communication module.

[0010] In addition, the 5G and V2X communication function integrated circuit mentioned above also includes: an encryption IC, which is connected to the V2X communication module via an SPI bus and is used to encrypt or decrypt the information transmitted by the V2X communication module.

[0011] In addition, the 5G and V2X communication function integrated circuit described above also includes: at least one transformer chip; the Ethernet interfaces on the first Ethernet chip and the second Ethernet chip are connected to the M12 aviation plug interface through the transformer chip, and are connected to at least one external device through the M12 aviation plug interface.

[0012] In addition, as described above, the first Ethernet chip has at least one Ethernet interface, and the second Ethernet chip has at least one Ethernet interface; the number of transformer chips is the same as the number of Ethernet interfaces on the first Ethernet chip and the second Ethernet chip.

[0013] In addition, the 5G module described above is equipped with 6 antennas; the V2X communication module is equipped with 2 antennas.

[0014] In addition, the GPS module described above is equipped with one antenna. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the second embodiment of this application; Figure 3 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the third embodiment of this application; Figure 4 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the fourth embodiment of this application; Figure 5 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the fifth embodiment of this application; Figure 6 This is a schematic diagram of the structure of the 5G and V2X communication function integrated circuit provided in the sixth embodiment of this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this disclosure, and to fully understand and implement the process of how this disclosure applies technical means to solve technical problems and achieve corresponding technical effects, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. The embodiments of this disclosure and the various features within them can be combined with each other without conflict, and the resulting technical solutions are all within the protection scope of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort should fall within the protection scope of this disclosure.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] The first embodiment of this application provides an integrated circuit with 5G and V2X communication functions, such as... Figure 1As shown, the system specifically includes: a 5G communication module 10, a V2X communication module 20, an Ethernet chip 30, and a protocol conversion module 40. The 5G communication module 10 is connected to the Ethernet chip 30 via an SGMII (Serial Gigabit Media Independent Interface) bus. The SGMII bus is a high-speed serial interface, typically containing a pair of transmit differential lines and a pair of receive differential lines. Through this connection, the 5G (5th Generation Mobile Communication Technology) communication module 10 can convert downlink data received from the wireless network into gigabit Ethernet data frames and transmit them to the Ethernet chip 30 as high-speed serial signals via the SGMII bus. Conversely, uplink data from an external device 50 (usually a host) is also transmitted from the Ethernet chip 30 to the 5G communication module 10 via this path, and then converted into wireless signals for transmission. This connection provides the device with high-speed 5G internet access. The direct SGMII interface eliminates the need for an additional physical layer chip, simplifying the design, reducing latency, and enabling efficient exchange of 5G data and local area network data.

[0020] The V2X (Vehicle-to-Everything) communication module 20's data output interface (typically a USB interface) is connected to the protocol conversion module 40 via PCB traces. The protocol conversion module 40 is then connected to the Ethernet chip 30 via the RGMII (Reduced Gigabit Media Independent Interface) bus. Specifically, the RGMII bus connection means that the RGMII interface of the protocol conversion module 40 is connected to the RGMII interface pins of the Ethernet chip 30 via PCB traces. Through the protocol conversion module 40, the vehicle-to-everything messages generated or received by the V2X communication module 20 can be converted into RGMII protocol signals recognizable by the Ethernet chip 30 and transmitted to the Ethernet chip 30.

[0021] The Ethernet chip 30 integrates Ethernet physical layer (PHY) functionality, and its MDI (Medium Dependent Interface) is connected to the physical Ethernet interface via a network transformer (Magnetics Module). This Ethernet interface is preferably an M12 interface with high shock resistance and anti-drop properties, but a standard RJ45 interface can also be used. External devices 50 (such as vehicle-mounted hosts, gateways, and other vehicle-mounted terminals) can be connected by plugging a network cable into this Ethernet interface.

[0022] Compared with related technologies, the present invention integrates the 5G communication module and the V2X communication module on the same circuit board, and uses SGMII direct connection and protocol conversion module to interface with RGMII, sharing a single Ethernet switching chip and physical interface. This has the following significant advantages: it integrates the functions of two originally separate devices into one, greatly reducing hardware size and space occupation. Externally, only an Ethernet interface needs to be set up as required to connect to external devices 50, reducing external interconnection cables and connectors between devices, lowering the risk of failure due to loose connectors or cable wear, resulting in higher system stability and lower cost.

[0023] The second embodiment of this application relates to an integrated circuit for 5G and V2X communication functions. This embodiment is a refinement of the foregoing embodiment and specifically includes the following contents.

[0024] In this embodiment, the Ethernet chip 30 can be a multi-port Ethernet chip or two multi-port Ethernet chips. This embodiment does not impose specific restrictions on this and can be selected according to actual needs.

[0025] When the Ethernet chip 30 is a two-port Ethernet chip, in this embodiment the two Ethernet chips are the first Ethernet chip 31 and the second Ethernet chip 32. At this time, the 5G communication module 10 is connected to the first Ethernet chip 31, and the V2X communication module 20 is connected to the second Ethernet chip 32. The first Ethernet chip 31 and the second Ethernet chip 32 are connected through the MDI bus.

[0026] Specifically, such as Figure 2 As shown, the 5G communication module 10 is connected to the first Ethernet chip 31 via the SGMII bus, forming its dedicated data channel; the data output interface of the V2X communication module 20 is connected to the protocol conversion module 40 via PCB traces, and the protocol conversion module 40 is then connected to the second Ethernet chip 32 via the RGMII bus, forming its dedicated data channel. That is, in this embodiment, the two Ethernet chips communicate with the 5G communication module 10 and the V2X communication module 20 respectively. The first Ethernet chip 31 and the second Ethernet chip 32 are interconnected at the physical layer via the MDI bus. The MDI (Medium Dependent Interface) bus is a standard Ethernet physical layer differential signal interface, which here acts as an internal backplane bus, transmitting standard Ethernet physical layer differential signals, realizing high-speed data exchange between the two independent switching chips.

[0027] The aforementioned connection structure allows 5G data streams and V2X data streams to be processed within their respective dedicated data transmission channels. When data needs to interact between the 5G module and the V2X module, data packets are transmitted from the first Ethernet chip 31 to the second Ethernet chip 32 via the MDI bus, or vice versa.

[0028] This embodiment physically isolates the data paths of 5G and V2X functions by using a first Ethernet chip 31 and a second Ethernet chip 32. This avoids potential interference from 5G signals to the highly secure V2X communication, thus improving system stability. The dual-chip architecture facilitates the expansion of more Ethernet ports. For example, both the first Ethernet chip 31 and the second Ethernet chip 32 can be 4-port chips, providing a total of 8 Gigabit Ethernet ports, meeting the needs of multiple devices accessing the vehicle system under specific circumstances.

[0029] The third embodiment of this application relates to a 5G and V2X communication function integrated circuit. This embodiment is a supplement to the foregoing embodiments. The supplement is that the protocol conversion module 40 in this embodiment includes: an Ethernet bridge controller 41 and a USB switch 42.

[0030] like Figure 3 As shown, the V2X communication module 20 is connected to the USB switch 42 via a USB interface; the USB switch 42 is connected to the Ethernet bridge controller 41 via a USB interface; and the Ethernet bridge controller 42 is connected to the second Ethernet chip 32 via the RGMII bus.

[0031] Specifically, the USB switch 42 is a multi-channel USB switch selection chip used to provide path management for USB signals. In this solution, it is mainly used to direct USB data from the V2X module 20 to the Ethernet bridge controller 41. The Ethernet bridge controller 41 is typically a dedicated IC integrating a USB MAC and an Ethernet MAC / PHY, such as the LAN7801. The Ethernet bridge controller 41 receives data packets from the USB switch 42, unpacks and repackages them into standard Ethernet frames, performs protocol conversion, and then sends the parallel data to the second Ethernet chip 32 through the RGMII interface. Alternatively, data from the network side can also be converted in reverse through this path and sent to the V2X module 20.

[0032] This application embodiment provides an Ethernet bridging controller 41 that works with a USB switch 42 to achieve protocol conversion, which facilitates subsequent debugging and maintenance. Using a professional Ethernet bridging controller chip to complete the protocol conversion is more stable and efficient than using a general-purpose processor for simulation, and does not occupy main control resources.

[0033] The fourth embodiment of this application relates to a 5G and V2X communication function integrated circuit. This embodiment is a supplement to the foregoing embodiments, and the supplement is that the integrated circuit of this embodiment further includes: The GPS module 60 is connected to the V2X communication module 20 and is used to provide serial port signals and PPS signals to the V2X communication module 20.

[0034] Specifically, such as Figure 4 As shown, this embodiment adds a GPS module 60 as a spatiotemporal reference source for V2X communication. The GPS module 60 is physically connected to the V2X communication module 20 through two sets of independent physical lines: one is a UART (Universal Asynchronous Receiver / Transmitter) interface, connected through pins such as TX (transmit) and RX (receive); the other is a dedicated PPS (Pulse Per Second) signal line, which directly connects the PPS output pin of the GPS module 60 to the PPS input pin of the V2X communication module 20.

[0035] The UART interface is used to transmit serial port data signals. The GPS module 60 continuously sends data frames to the V2X communication module 20 through the UART interface. These data frames contain calculated latitude and longitude, altitude, speed, heading, and UTC (Universal Time Coordinated) time, thereby providing the V2X communication module 20 with the geographical location and time reference of the vehicle it is in.

[0036] The PPS signal line is used to transmit the PPS pulse signal, which is a square wave pulse with an extremely low duty cycle and extremely high timing accuracy, generated once per second, with its rising edge strictly synchronized with the start of the UTC second. Transmitting the PPS signal through the PPS signal line provides nanosecond or microsecond-level hardware clock synchronization for the V2X communication module 20, thereby ensuring that the absolute time between different vehicles and devices remains as consistent as possible.

[0037] In addition, the GPS module 60 is equipped with a GPS antenna. This antenna is typically connected to the RF input pins of the GPS module 60 via a coaxial cable and a corresponding RF connector. The GPS antenna is specifically designed to receive microwave signals from the Global Navigation Satellite System, thus providing the GPS module 60 with a raw satellite signal source. The GPS module 60 analyzes and processes the signals received by the antenna to generate accurate positioning data for transmission to the V2X communication module 20.

[0038] The fifth embodiment of this application relates to a 5G and V2X communication function integrated circuit. This embodiment is a supplement to the foregoing embodiments, and the supplement is that the integrated circuit of this embodiment further includes: The encryption IC 70 is connected to the V2X communication module 20 via the SPI (Serial Peripheral Interface) bus and is used to encrypt or decrypt the information transmitted by the V2X communication module 20.

[0039] Specifically, such as Figure 5 As shown, the encryption IC 70 is connected to the V2X communication module 20 via the SPI bus. The SPI bus typically includes four signal lines: SCLK (clock), MOSI (master data output), MISO (master data input), and CS (chip select). The V2X communication module controls the communication with the encryption IC 70 according to its actual needs. When a V2X message needs to be sent or verified, the V2X communication module 20 sends the raw data or message digest, along with encryption / decryption / signature instructions, to the encryption IC 70 via the SPI bus in the form of serial data signals. The encryption IC 70 integrates a security algorithm and key storage unit. It performs specified security operations, such as ECDSA signing and AES encryption, and then returns the results to the V2X module via the SPI bus. This process ensures the confidentiality of V2X communication messages, preventing forgery, tampering, and eavesdropping, thus meeting the mandatory security requirements of the V2X communication standard.

[0040] The sixth embodiment of this application relates to an integrated circuit for 5G and V2X communication functions. This embodiment is a supplement to the foregoing embodiments. The supplement is that the integrated circuit in this embodiment further includes: one less transformer chip 80; the Ethernet interfaces on the first Ethernet chip 31 and the second Ethernet chip 32 are connected to the M12 aviation plug interface through the transformer chip 80, and are connected to at least one external device 50 through the M12 aviation plug interface.

[0041] Specifically, such as Figure 6 As shown, the first Ethernet chip 31 and the second Ethernet chip 32 jointly provide multiple Ethernet interfaces (PHYs). The MDI differential signal lines of each Ethernet interface are first connected to an independent transformer chip 80. The other side of each transformer chip is connected to a physical M12 connector, and a high-speed, stable data connection can be achieved with the vehicle host or other devices via a standard Ethernet cable. In some cases, the number of transformer chips 80 corresponds one-to-one with the number of Ethernet interfaces on the first Ethernet chip 31 and the second Ethernet chip 32.

[0042] The seventh embodiment of this application relates to a 5G and V2X communication function integrated circuit. This embodiment supplements the foregoing embodiments in that the 5G module 10 of this embodiment is configured with six antennas. The configuration of six antennas enables support for 4x4 MIMO (Multiple-Input Multiple-Output) technology and additional diversity antennas. MIMO technology, by simultaneously transmitting and receiving data through multiple antennas, can greatly improve data transmission rate and link reliability. The configuration of six antennas ensures that the 5G module can fully utilize the high bandwidth potential of the 5G network, providing high-speed internet access for vehicles.

[0043] In another example, the V2X communication module 20 is configured with two antennas.

[0044] Specifically, the V2X communication module 20 is equipped with two antennas for receiving diversity or 1x1 MIMO. In complex mobile communication environments, multipath effects can lead to signal fading. By using two receiving antennas, the V2X communication module 20 can continuously select the antenna with better signal quality for reception, or combine the two signals, thereby significantly improving the receiving sensitivity and link stability and reliability of V2X communication.

[0045] It should be noted that, in this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element limited by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] While the embodiments disclosed herein are as described above, the foregoing content is merely for the purpose of facilitating understanding of this disclosure and is not intended to limit this disclosure. Any person skilled in the art to which this disclosure pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope of this disclosure; however, the scope of patent protection of this disclosure shall still be determined by the scope defined in the appended claims.

Claims

1. An integrated circuit for 5G and V2X communication functions, characterized in that, Includes: 5G communication module, V2X communication module, Ethernet chip and protocol conversion module; The 5G communication module is connected to the Ethernet chip via the SGMII bus; The V2X communication module is connected to the protocol conversion module, and then connected to the Ethernet chip via the RGMII bus; The Ethernet chip is connected to at least one external device via an Ethernet interface.

2. The 5G and V2X communication function integrated circuit according to claim 1, characterized in that, The Ethernet chip includes: a first Ethernet chip and a second Ethernet chip; The 5G communication module is connected to the first Ethernet chip, and the V2X communication module is connected to the second Ethernet chip; The first Ethernet chip and the second Ethernet chip are connected via an MDI bus.

3. The 5G and V2X communication function integrated circuit according to claim 2, characterized in that, The protocol conversion module includes: an Ethernet bridging controller and a USB switch; The V2X communication module is connected to the USB switch via a USB interface; the USB switch is connected to the Ethernet bridge controller via a USB interface. The Ethernet bridging controller and the second Ethernet chip are connected via the RGMII bus.

4. The 5G and V2X communication function integrated circuit according to claim 3, characterized in that, The Ethernet bridging controller is a LAN7801.

5. The 5G and V2X communication function integrated circuit according to claim 1, characterized in that, Also includes: The GPS module is connected to the V2X communication module and is used to provide serial port signals and PPS signals to the V2X communication module.

6. The 5G and V2X communication function integrated circuit according to claim 1, characterized in that, Also includes: An encryption IC is connected to the V2X communication module via an SPI bus and is used to encrypt or decrypt information transmitted by the V2X communication module.

7. The 5G and V2X communication function integrated circuit according to claim 2, characterized in that, Also includes: At least one transformer chip; The Ethernet interfaces on the first Ethernet chip and the second Ethernet chip are connected to the M12 aviation connector via the transformer chip, and are connected to at least one external device via the M12 aviation connector.

8. The 5G and V2X communication function integrated circuit according to claim 7, characterized in that, The first Ethernet chip has at least one Ethernet interface, and the second Ethernet chip has at least one Ethernet interface; the number of transformer chips is the same as the number of Ethernet interfaces on the first Ethernet chip and the second Ethernet chip.

9. The 5G and V2X communication function integrated circuit according to claim 1, characterized in that, The 5G module is equipped with 6 antennas; the V2X communication module is equipped with 2 antennas.

10. The 5G and V2X communication function integrated circuit according to claim 5, characterized in that, The GPS module is equipped with one antenna.

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