In-vehicle optical network, vehicle, and in-vehicle optical network-based communication method

Abstract

An in-vehicle optical network, a vehicle, and an in-vehicle optical network-based communication method. The in-vehicle optical network comprises an optical line terminal and a first optical network unit. At least two optical communication lines are arranged between the optical line terminal and the first optical network unit, and the at least two optical communication lines include a first optical communication line and a second optical communication line, so that when a fault occurs in the first optical communication line among the at least two optical communication lines, switching is performed to the second optical communication line among the at least two optical communication lines for communication.

Description

Vehicle-mounted optical network, vehicle and communication method based on vehicle-mounted optical network

[0001] This application claims priority to Chinese Patent Application No. 202411098144.5, filed on August 9, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicles, and in particular to a vehicle-mounted optical network, a vehicle and a communication method based on the vehicle-mounted optical network. BACKGROUND

[0003] With the development of technologies such as artificial intelligence and wireless communication, automobiles, as one of the best carriers for new technology applications, are accelerating the process of intelligentization and networking. The generation of new business requirements and application scenarios such as intelligent driving and advanced driving assistance system (ADAS) puts forward new requirements for vehicle-mounted communication technology, and the bandwidth requirement of vehicle-mounted communication business is also increasing sharply. SUMMARY

[0004] In one aspect, a vehicle-mounted optical network is provided. The vehicle-mounted optical network includes an optical line terminal and a first optical network unit.

[0005] At least two optical communication lines are provided between the optical line terminal and the first optical network unit, and the at least two optical communication lines include a first optical communication line and a second optical communication line, so that when a fault occurs in the first optical communication line among the at least two optical communication lines, switching to the second optical communication line among the at least two optical communication lines for communication is performed.

[0006] In some embodiments, the optical line terminal includes a first optical communication port and a second optical communication port. The first optical communication port is in communication connection with the first optical network unit through the first optical communication line, and the second optical communication port is in communication connection with the first optical network unit through the second optical communication line. When at least one of the first optical communication port or the first optical communication line fails, the optical line terminal and the first optical network unit communicate through the second optical communication port and the second optical communication line.

[0007] In some embodiments, the vehicle-mounted optical network further includes a first optical splitter provided in the first optical communication line, and the first optical splitter is in communication connection with the first optical communication port.

[0008] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line communicatively connects the first optical splitter and the first optical communication port, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the first optical splitter through different first sub-lines of the plurality of first sub-lines.

[0009] In some embodiments, the vehicle-mounted optical network further comprises a second optical splitter arranged on the second optical communication line, and the second optical splitter is communicatively connected with the second optical communication port. The second optical communication line comprises a second main line connecting the second optical splitter and a plurality of second sub-lines. The second main line communicatively connects the second optical splitter and the second optical communication port, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the second optical splitter through different second sub-lines of the plurality of second sub-lines.

[0010] In some embodiments, the vehicle-mounted optical network further comprises at least one of: a third optical splitter connected with one of the plurality of first sub-lines; or a fourth optical splitter connected with one of the plurality of second sub-lines.

[0011] In some embodiments, the first optical communication line is provided with a first optical fiber, and the second optical communication line is provided with a second optical fiber. The optical line terminal is communicatively connected with the first optical network unit through the first optical fiber in the first optical communication line, and the optical line terminal is communicatively connected with the first optical network unit through the second optical fiber in the second optical communication line.

[0012] When the first optical fiber in the first optical communication line fails, the optical line terminal and the first optical network unit are communicatively connected through the second optical fiber in the second optical communication line.

[0013] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter arranged on the first optical communication line and the second optical communication line, and the first optical splitter is communicatively connected with the optical line terminal via the first optical fiber or the second optical fiber.

[0014] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line communicatively connects the first optical splitter and the optical line terminal through the first optical fiber, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the first optical splitter through different first sub-lines of the plurality of first sub-lines.

[0015] In some embodiments, the second optical communication line comprises a second main line connecting the first optical splitter and a plurality of second sub-lines. The second main line connects the first optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are connected to the optical line terminal through different second sub-lines of the plurality of second sub-lines via the first optical splitter.

[0016] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter and a second optical splitter. The first optical splitter is connected to the first optical network unit and the optical line terminal through the first optical communication line, and the second optical splitter is connected to the first optical network unit and the optical line terminal through the second optical communication line.

[0017] In the event of a failure in at least one of the first optical splitter or the first optical communication line, the optical line terminal and the first optical network unit are connected through the second optical splitter and the second optical communication line.

[0018] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line connects the first optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are connected to the optical line terminal through different first sub-lines of the plurality of first sub-lines via the first optical splitter.

[0019] In some embodiments, the second optical communication line comprises a second main line connecting the second optical splitter and a plurality of second sub-lines. The second main line connects the second optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are connected to the optical line terminal through different second sub-lines of the plurality of second sub-lines via the second optical splitter.

[0020] In some embodiments, in the case where the optical line terminal is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal.

[0021] Alternatively, in the case where the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0022] Alternatively, in a case where the optical line terminal is provided with at least two optical communication ports and the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal, and the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0023] In some embodiments, the optical line terminal is connected to any one or more of the following components, respectively:

[0024] a central computing platform, a whole-vehicle control module, an intelligent cockpit control module, and an auxiliary driving control module.

[0025] In some embodiments, the first optical network unit is connected to any one or more of the following components, respectively:

[0026] a sensor and an actuator.

[0027] In another aspect, a vehicle is provided. The vehicle includes an in-vehicle optical network as described above.

[0028] In yet another aspect, a communication method based on the in-vehicle optical network as described above is provided. The method includes:

[0029] In a case where a first optical communication line of the at least two optical communication lines fails, switching to a second optical communication line of the at least two optical communication lines for communication.

[0030] Some embodiments of the present disclosure have the following advantages:

[0031] In some embodiments of the present disclosure, the in-vehicle optical network includes an optical line terminal and a first optical network unit, and at least two optical communication lines are provided between the optical line terminal and the first optical network unit. In a case where a first optical communication line of the at least two optical communication lines fails, switching to a second optical communication line of the at least two optical communication lines for communication, so as to realize communication in a vehicle by using an optical network. In this way, the demand for bandwidth and the like of in-vehicle communication can be met, and the optical communication lines in the in-vehicle optical network are redundantly backed up, so as to protect the optical communication lines and improve the stability and reliability of the in-vehicle optical network. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the present disclosure, the drawings needed to be used in the description of the present disclosure will be briefly introduced as follows. However, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0033] FIG. 1 is a schematic diagram of a vehicle-mounted optical network according to some embodiments;

[0034] FIG. 2 is a schematic diagram of another vehicle-mounted optical network according to some embodiments;

[0035] FIG. 3 is a schematic diagram of yet another vehicle-mounted optical network according to some embodiments;

[0036] FIG. 4 is a schematic diagram of yet another vehicle-mounted optical network according to some embodiments;

[0037] FIG. 5 is a schematic diagram of yet another vehicle-mounted optical network according to some embodiments;

[0038] FIG. 6 is a schematic diagram of yet another vehicle-mounted optical network according to some embodiments;

[0039] FIG. 7 is a schematic diagram of yet another vehicle-mounted optical network according to some embodiments;

[0040] FIG. 8 is a block diagram of a vehicle according to some embodiments;

[0041] FIG. 9 is a flowchart of a vehicle-mounted optical network-based communication method according to some embodiments. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described in detail below in combination with the drawings and specific embodiments. However, the described embodiments are part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0043] In the related art vehicle-mounted communication method, an electronic and electrical architecture of a domain controller is usually adopted, and a twisted pair is used for transmission communication. However, this method cannot meet the rapidly growing demand.

[0044] Therefore, some embodiments of the present disclosure provide a vehicle-mounted optical network 100.

[0045] FIG. 1 and FIG. 2 respectively show a schematic diagram of a vehicle-mounted optical network provided by some embodiments of the present disclosure. As a key technology in the field of intelligent vehicles, vehicle-mounted optical communication can meet the high-speed, stable and large-capacity communication requirements of vehicles by taking advantage of the transmission of optical fibers. Vehicle-mounted optical communication not only provides higher data transmission rates and greater spectral resources, but also has lower power consumption and stronger anti-interference capabilities, which are suitable for the complex electromagnetic environment inside the vehicle. In some examples, the vehicle-mounted optical network can be a passive optical network (PON), such as a PON all-optical network.

[0046] In some embodiments, the vehicle-mounted optical network can include an optical line terminal (OLT) and an optical network unit (ONU).

[0047] In some examples, the optical line terminal can be provided one, and the optical network unit can be provided multiple. For example, the optical network unit can include a first optical network unit and a second optical network unit.

[0048] In some embodiments, the optical line terminal is connected to any one or more of the following components: a central computing platform, a vehicle control module, an intelligent cockpit control module, an auxiliary driving control module.

[0049] In some embodiments, the optical network unit (including the first optical network unit and the second optical network unit) is connected to any one or more of the following components: a sensor, an actuator.

[0050] In some examples, the optical line terminal can be provided at a central position in the vehicle to balance the transmission with each optical network unit. Of course, the optical line terminal can also be provided at other positions. For example, the optical network unit can be distributed in various regions of the vehicle and can be provided according to the actual needs of the vehicle.

[0051] In some examples, the optical line terminal and the optical network unit can be directly connected by an optical fiber, or can be connected by an optical splitter, thereby forming a vehicle-mounted optical network.

[0052] In actual applications, the vehicle-mounted optical network can include a point-to-multipoint (P2MP) architecture and a ring architecture.

[0053] For the point-to-multipoint architecture, as shown in FIG. 1, the optical line terminal 101 is connected to different optical network units 102 using independent optical communication lines. Alternatively, the optical line terminal 101 can also be connected to different optical splitters 103 using independent optical communication lines, and the optical splitters 103 are connected to one or more optical network units 102.

[0054] For the ring architecture, as shown in FIG. 2, a plurality of optical network units 102 are connected to each other to form a ring path, and the optical line terminal 101 is connected in the ring path. Alternatively, a plurality of optical splitters 103 are connected to each other to form a ring path, and the optical splitters 103 are connected with one or more optical network units 102, and the optical line terminal 101 is connected in the ring path.

[0055] In the case of using the ring architecture, by using the backbone optical fiber ring backup protection in the ring architecture, the defects of the traditional protection switching structure, such as poor practicability, high cost, and inability to quickly self-heal due to backbone optical fiber failure, are overcome. Moreover, the ring architecture can also adapt to the complex Electronic Control Unit (ECU) and wiring in the vehicle environment, and better consider the division of the vehicle domain control, as follows:

[0056] Cost saving: The ring network structure is adopted, the backbone optical fibers are mutually redundant backup devices, and independent data transmission work is performed. The loop shares the same backup path, and the required optical fiber resources are less, thereby reducing the use cost of the optical fiber. High reliability: When the port of the optical line terminal or the backbone optical fiber fails, additional optical links can be used for data transmission, and the network can be quickly switched without manual intervention, thereby greatly improving the reliability of the network. Flexibility: The ring network backup protection structure can support the access of multiple optical network devices, thereby being expanded, and different centralized nodes can be set according to the division of the vehicle domain to provide a more flexible scalable network architecture. The ring network structure not only can be used as a redundant backup design, but also can effectively balance and accelerate the transmission of high-speed data flow.

[0057] During the use of the vehicle, the vehicle-mounted optical network may face various failures and abnormal situations, such as optical module failure, optical fiber breakage or damage, etc., which may cause the communication interruption of the vehicle-mounted optical network. Especially, the backbone network failure in the vehicle-mounted optical network may directly cause the paralysis of the whole vehicle, and may cause unpredictable serious consequences. Due to the particularity of the vehicle-mounted environment, such as the sensitive vulnerability of optical communication devices, the vehicle-mounted optical network faces some new safety and reliability challenges, and a brand-new protection scheme suitable for the vehicle-mounted optical network needs to be proposed to ensure the reliability and stability of the vehicle-mounted optical network.

[0058] In actual application, at least two optical communication lines can be arranged between the optical line terminal and the first optical network unit, and the at least two optical communication lines include a first optical communication line and a second optical communication line. One of the at least two optical communication lines can be used as a main line, and the other optical communication line of the at least two optical communication lines can be used as a backup line.

[0059] In a case that the first optical communication line is a main line and the second optical communication line is a backup line, communication is performed by using the first optical communication line as the main line. In a case that the first optical communication line among the at least two optical communication lines fails, such as an optical communication port in the optical line terminal and the first optical network unit fails, an optical fiber fails, or an optical splitter fails, the second optical communication line among the at least two optical communication lines is switched to perform communication. That is, communication is performed by using the second optical communication line as the backup line, so that the service is uninterrupted or quickly recovered, thereby improving the reliability and stability of the whole vehicle network, and facilitating the application of optical communication technology in vehicle network communication.

[0060] In some embodiments of the present disclosure, the vehicle-mounted optical network includes an optical line terminal and a first optical network unit, and at least two optical communication lines are arranged between the optical line terminal and the first optical network unit. In a case that the first optical communication line among the at least two optical communication lines fails, the second optical communication line among the at least two optical communication lines is switched to perform communication, so that the optical network can be used for communication in the vehicle. In this way, the demand for bandwidth and other aspects of vehicle-mounted communication can be met, and the optical communication lines in the vehicle-mounted optical network are redundantly backed up, thereby the optical communication lines can be protected and switched, and the stability and reliability of the vehicle-mounted optical network are improved.

[0061] The redundant backup of the optical communication port can use the following architecture:

[0062] In some embodiments, the optical line terminal can be provided with at least two optical communication ports, and different optical communication ports can be connected in communication with the optical network unit through different optical communication lines.

[0063] In some examples, each optical communication port can be provided with an independent PON media access control address (Media Access Control Address, MAC) and an optical module.

[0064] In some examples, the at least two optical communication ports on the optical line terminal side can be distributed in the same board. Of course, the at least two optical communication ports can also be distributed in different boards.

[0065] In some examples, the optical line terminal can include a first optical communication port and a second optical communication port. The first optical communication port is connected in communication with the first optical network unit through a first optical communication line, and the second optical communication port is connected in communication with the first optical network unit through a second optical communication line.

[0066] In a case that at least one of the first optical communication port or the first optical communication line fails, the optical line terminal and the first optical network unit are connected in communication through the second optical communication port and the second optical communication line.

[0067] In practical applications, the first optical communication line where the first optical communication port is located can be a main line, and the second optical communication line where the second optical communication port is located can be a backup line. When the first optical communication port or the optical fiber or the optical splitter in the first optical communication line as the main line fails, the second optical communication line as the backup line can be switched to for communication.

[0068] It should be noted that the port backup protection mode is a hot backup protection. Hot backup switching refers to automatic switching triggered by fault detection. In some examples, a fault detection module can be set. When the fault detection module detects, for example, signal loss, frame loss, or bit error rate (BER) degradation to a predetermined threshold, the backup optical communication port can be automatically switched to the optical communication line without manual operation, and the switching time is in the order of milliseconds (for example, the switching time is less than or equal to 50 milliseconds).

[0069] In practical applications, the port backup protection is a more reliable protection mode than the fiber backup protection, which can not only avoid the impact of fiber faults between the optical line terminal and the optical distribution network (ODN), but also avoid the impact of single-board hardware faults of the optical line terminal.

[0070] In the vehicle-mounted optical network, the temperature-sensitive optical transmitter module can be integrated into the optical line terminal, and the optical transmitter module can be placed in the center of the water cooling system. The design of at least two optical communication ports of the optical line terminal greatly improves the port disaster recovery on the optical line terminal, making the entire vehicle-mounted optical network more stable and reliable.

[0071] In some embodiments, the vehicle-mounted optical network further includes a first optical splitter disposed in the first optical communication line, and the first optical splitter is in communication connection with the first optical communication port.

[0072] In the first optical communication line, the first optical communication port can be in communication connection with the optical network unit through the first optical splitter. As shown in FIG. 3, the PON port 1 (i.e., the first optical communication port) is disposed in the OLT, and the PON port 1 in the OLT is connected with the optical network unit through the 2:N optical splitter (i.e., the first optical splitter).

[0073] In some examples, the second optical communication port can use the same optical splitter as the first optical communication port to be in communication connection with the optical network unit. The first optical communication port and the second optical communication port are respectively connected to different ports of the optical splitter. Of course, the second optical communication port can also use a different optical splitter from the first optical communication port to be in communication connection with the first optical network unit.

[0074] As shown in FIG. 3, the OLT is further provided with a PON port 2 (i.e., a second optical communication port). The PON port 2 in the OLT is connected with the optical network unit through a 2:N optical splitter. The 2:N optical splitter can be connected with the PON port 1 and the PON port 2 in the OLT through different ports.

[0075] It should be noted that the two ends of the optical splitter can be provided with different numbers of ports. For example, a 2:N optical splitter is provided with 2 ports at one end and N ports at the other end (N is a positive integer greater than or equal to 1). For another example, a 1:N optical splitter is provided with 1 port at one end and N ports at the other end. For another example, a 1:2 optical splitter is provided with 1 port at one end and 2 ports at the other end, and so on.

[0076] In some embodiments, the vehicle-mounted optical network further includes a second optical network unit. The first optical communication line includes a first main line connected with the first optical splitter and a plurality of first sub-lines. The first main line is in communication connection with the first optical splitter and the first optical communication port, and the first optical network unit and the second optical network unit are in communication connection with the optical line terminal through different first sub-lines via the first optical splitter.

[0077] In actual application, one end of the first optical splitter is connected with the optical line terminal, and the other end of the first optical splitter is connected with a plurality of optical network units (including the first optical network unit and the second optical network unit). As shown in FIG. 3, the 2:N optical splitter is connected with the ONU 1 and the ONU N through different ports.

[0078] For the first optical communication line including the first main line and the plurality of first sub-lines between the first optical communication port and the first optical splitter, the first sub-line is the line between the first optical splitter and the optical network unit (including the lines between the first optical splitter and the first optical network unit and the second optical network unit).

[0079] In actual application, the first optical network unit and the second optical network unit are in communication connection with the first optical splitter through different first sub-lines, and the first optical splitter is in communication connection with the first optical communication port in the optical line terminal through the same first main line.

[0080] In some embodiments, the vehicle-mounted optical network further includes a second optical splitter arranged in a second optical communication line. The second optical splitter is in communication connection with a second optical communication port. The second optical communication line includes a second main line connected with the second optical splitter and a plurality of second sub-lines. The second main line is in communication connection with the second optical splitter and the second optical communication port, and the first optical network unit and the second optical network unit are in communication connection with the optical line terminal through different second sub-lines via the second optical splitter.

[0081] In practical applications, the second optical communication port can be connected to the first optical network unit using a different optical splitter. That is, in the first optical communication line, the first optical communication port is connected to the optical network unit through the first optical splitter, and in the second optical communication line, the second optical communication port is connected to the optical network unit through the second optical splitter. As shown in FIG. 4, the PON port 1 in the OLT is connected to the optical network unit through a 1:N optical splitter (i.e., the first optical splitter), and the PON port 2 in the OLT is connected to the optical network unit through another 1:N optical splitter (i.e., the second optical splitter).

[0082] For the second optical communication line including the second main line between the second optical communication port and the second optical splitter and the plurality of second sub-lines, the second sub-line is the line between the second optical splitter and the optical network unit (including the lines between the second optical splitter and the first optical network unit and the second optical network unit).

[0083] In practical applications, the first optical network unit and the second optical network unit are connected to the second optical splitter through different second sub-lines, and the second optical splitter is connected to the second optical communication port in the optical line terminal through the same second main line.

[0084] In some examples, in the case where the second optical communication port and the first optical communication port are connected to the first optical network unit using different optical splitters, the same optical network unit (including the first optical network unit or the second optical network unit) needs to be connected to the first optical splitter and the second optical splitter at the same time. Therefore, the optical network unit can also be provided with at least two optical communication ports, and the optical network unit is connected to different optical splitters through different optical communication ports. As shown in FIG. 4, the ONUs 1 to ONUs N are provided with the PON port 1 and the PON port 2, the PON port 1 in the ONUs 1 to ONUs N is connected to one 1:N optical splitter (i.e., the first optical splitter), and the PON port 2 in the ONUs 1 to ONUs N is connected to another 1:N optical splitter (i.e., the second optical splitter).

[0085] In some embodiments, the vehicle-mounted optical network further includes a third optical splitter connected to one first sub-line; or, the vehicle-mounted optical network further includes a fourth optical splitter connected to one second sub-line; or, the vehicle-mounted optical network further includes a third optical splitter connected to one first sub-line and a fourth optical splitter connected to one second sub-line.

[0086] In the case of the ring architecture of the vehicle-mounted optical network, for the first optical communication line, the optical line terminal is connected with the first splitter through the first main line, the first splitter is connected with the optical network unit through the first sub-line, and the third splitter is arranged on the first sub-line; for the second optical communication line, the optical line terminal is connected with the second splitter through the second main line, the second splitter is connected with the optical network unit through the second sub-line, and the fourth splitter is arranged on the second sub-line.

[0087] Fig. 5 is a ring architecture of the vehicle-mounted optical network. As shown in Fig. 5, a plurality of 2:N splitters are sequentially connected to form a ring path, and the OLT is connected in the ring path through two 1:2 splitters. One PON port (i.e., the first optical communication port) of the OLT is connected with one 1:2 splitter (i.e., the first splitter) through the first main line, and the 1:2 splitter is connected with the optical network unit through the 2:N splitter (i.e., the third splitter) on the first sub-line. Another PON port (i.e., the second optical communication port) of the OLT is connected with another 1:2 splitter (i.e., the second splitter) through the second main line, and the 1:2 splitter is connected with the optical network unit through the 2:N splitter (i.e., the fourth splitter) on the second sub-line.

[0088] For the redundant backup of the optical fiber, the following architecture can be adopted:

[0089] In some embodiments, the first optical communication line is provided with a first optical fiber, and the second optical communication line is provided with a second optical fiber. The optical line terminal is communicatively connected with the first optical network unit through the first optical fiber in the first optical communication line, and the optical line terminal is communicatively connected with the first optical network unit through the second optical fiber in the second optical communication line. When the first optical fiber in the first optical communication line fails, the optical line terminal and the first optical network unit are communicated through the second optical fiber in the second optical communication line.

[0090] The vehicle-mounted optical network further includes a first splitter arranged at the first optical communication line and the second optical communication line, and the first splitter is communicatively connected with the optical line terminal through the first optical fiber or the second optical fiber.

[0091] In actual application, for one optical communication port in the optical line terminal, at least two optical fibers (including the first optical fiber and the second optical fiber) can be arranged to be connected with the first splitter. One of the at least two optical fibers serves as a main optical fiber, and the other optical fiber in the at least two optical fibers serves as a backup optical fiber. In this way, at least two optical communication lines (including the first optical communication line and the second optical communication line) are formed through the at least two optical fibers respectively, the optical communication line corresponding to the main optical fiber is a main optical communication line, and thus the redundant backup of the optical fiber in the vehicle-mounted optical network is realized.

[0092] As shown in FIG. 6, for one PON port (i.e., optical communication port) in the OLT, two optical fibers can be connected to one port of the 1:N optical splitter (i.e., first optical splitter).

[0093] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit. The first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line connects the first optical splitter and the optical line terminal through the first optical fiber, and the first optical network unit and the second optical network unit are connected to the optical line terminal through the first optical splitter through different first sub-lines.

[0094] In some embodiments, the second optical communication line comprises a second main line connecting the first optical splitter and a plurality of second sub-lines. The second main line connects the first optical splitter and the optical line terminal through the second optical fiber, and the first optical network unit and the second optical network unit are connected to the optical line terminal through the first optical splitter through different second sub-lines.

[0095] In actual application, one end of the first optical splitter can be connected to the optical line terminal, and the other end of the first optical splitter can be connected to a plurality of optical network units (including the first optical network unit and the second optical network unit).

[0096] For the first optical communication line, the optical line terminal can be connected to the first optical splitter through the first optical fiber in the first main line, and the first optical splitter can be connected to a plurality of optical network units (including the first optical network unit and the second optical network unit) through different first sub-lines.

[0097] For the second optical communication line, the optical line terminal can be connected to the first optical splitter through the second optical fiber in the second main line, and the first optical splitter can be connected to a plurality of optical network units (including the first optical network unit and the second optical network unit) through different second sub-lines.

[0098] As shown in FIG. 6, the OLT is connected to the 1:N optical splitter (i.e., first optical splitter) through one optical fiber, and is connected to ONU 1 to ONU N through the 1:N optical splitter. The OLT is connected to the 1:N optical splitter (i.e., first optical splitter) through another optical fiber, and is connected to ONU 1 to ONU N through the 1:N optical splitter.

[0099] It should be noted that the optical fiber backup protection mode is a cold backup protection. The cold backup switching is a switching triggered by a management event and needs manual intervention. That is, after the backbone optical fiber fails, it is manually switched to the standby optical fiber. In this process, the time of service interruption depends on the actual recovery time of the line.

[0100] For the redundancy backup of the optical splitter, the following architecture can be used:

[0101] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter and a second optical splitter. The first optical splitter is communicatively connected with the first optical network unit and the optical line terminal through a first optical communication line. The second optical splitter is communicatively connected with the first optical network unit and the optical line terminal through a second optical communication line. When at least one of the first optical splitter or the first optical communication line fails, the optical line terminal and the first optical network unit are communicatively connected through the second optical splitter and the second optical communication line.

[0102] In practical applications, different optical splitters can be set for different optical communication lines, and the optical line terminal is connected with the optical network unit through different optical splitters, thereby realizing the redundant backup of the optical splitters.

[0103] For the first optical communication line, the optical line terminal is connected with the first optical network unit through the first optical splitter. For the second optical communication line, the optical line terminal is connected with the first optical network unit through the second optical splitter.

[0104] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line communicatively connects the first optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal through different first sub-lines via the first optical splitter.

[0105] In some embodiments, the second optical communication line comprises a second main line connecting the second optical splitter and a plurality of second sub-lines. The second main line communicatively connects the second optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal through different second sub-lines via the second optical splitter.

[0106] In practical applications, one end of the optical splitter (including the first optical splitter and the second optical splitter) can be connected with the optical line terminal, and the other end of the optical splitter can be connected with a plurality of optical network units (including the first optical network unit and the second optical network unit).

[0107] For the first optical communication line, the optical line terminal is connected with the first optical splitter through the first main line, and the first optical splitter is connected with a plurality of optical network units (including the first optical network unit and the second optical network unit) through different first sub-lines.

[0108] For the second optical communication line, the optical line terminal is connected with the second optical splitter through the second main line, and the second optical splitter is connected with a plurality of optical network units (including the first optical network unit and the second optical network unit) through different second sub-lines.

[0109] As shown in FIG. 4, the PON port 1 in the OLT is connected with the 1:N optical splitter (i.e., the first optical splitter) through the first main line, and the 1:N optical splitter is connected with the ONU 1 to the ONU N through different first sub-lines. The PON port 2 in the OLT is connected with the 1:N optical splitter (i.e., the second optical splitter) through the second main line, and the 1:N optical splitter is connected with the ONU 1 to the ONU N through different second sub-lines.

[0110] In some examples, the optical splitter can be composed of a first sub-optical splitter and a second sub-optical splitter. One end of the first sub-optical splitter can be connected with the optical line terminal, the other end of the first sub-optical splitter can be connected with one end of the second sub-optical splitter, and the other end of the second sub-optical splitter can be connected with the optical network unit. The first sub-optical splitter in the first optical splitter is connected with the second sub-optical splitter in the second optical splitter, and the first sub-optical splitter in the second optical splitter is connected with the second sub-optical splitter in the first optical splitter, thereby further realizing the redundant backup of the optical splitter.

[0111] As shown in FIG. 7, the first optical splitter is composed of a 1:2 optical splitter (i.e., the first sub-optical splitter) and a 2:N optical splitter (i.e., the second sub-optical splitter), and the second optical splitter is composed of a 1:2 optical splitter (i.e., the first sub-optical splitter) and a 2:N optical splitter (i.e., the second sub-optical splitter).

[0112] It should be noted that some embodiments of the present disclosure provide port backup protection (as shown in FIG. 3), fiber backup protection (as shown in FIG. 6), full backup protection (as shown in FIG. 4), and hybrid backup protection (as shown in FIG. 7).

[0113] In the full backup protection mode, as shown in FIG. 4, the optical communication ports of the optical line terminal, the backbone optical fiber, the optical splitter, the branch optical fiber, and the optical network unit are all backed up. The optical line terminal has two optical communication ports, the vehicle-mounted optical network includes two 1:N optical splitters, and the optical network unit also has two optical communication ports, so that all components of the entire vehicle-mounted optical network are double backed up. The full backup protection method is a hot backup protection mode. When any node device, backbone optical fiber, or branch optical fiber fails, it can automatically switch to the backup part to realize protection of the entire optical fiber link, and the reliability is the highest.

[0114] In the hybrid backup protection mode, as shown in FIG. 7, the key parts in the vehicle-mounted optical network, such as the optical communication ports of the optical line terminal and the backbone optical fiber, are determined to be protected, and the optical communication ports of the optical splitter, the branch optical fiber, and the optical network unit are selectively protected. For example, two 1:2 optical splitters and two 2:N optical splitters are used, and the optical network unit selectively uses one or two optical communication ports, while the optical line terminal side uses two optical communication ports. The hybrid backup protection mode combines the advantages of the optical line terminal port backup protection and the full backup protection, improves the reliability, and reduces the cost.

[0115] In some embodiments, in the case that the optical line terminal is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal.

[0116] In some embodiments, in the case that the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0117] In the case that the optical communication port needs to be switched, an information synchronization mechanism is provided between the at least two optical communication ports (including the at least two optical communication ports of the optical line terminal or the at least two optical communication ports of the optical network unit) to synchronize the service configuration information of one optical communication port to the other optical communication port.

[0118] Some embodiments of the present disclosure further provide a vehicle 1000. As shown in FIG. 8, the vehicle 1000 includes an in-vehicle optical network 100 as described above.

[0119] The in-vehicle optical network 100 includes an optical line terminal and a first optical network unit.

[0120] At least two optical communication lines (such as a first optical communication line and a second optical communication line) are provided between the optical line terminal and the first optical network unit. In the case that the first optical communication line of the at least two optical communication lines fails, the second optical communication line of the at least two optical communication lines is switched to communicate.

[0121] In some embodiments of the present disclosure, the in-vehicle optical network includes an optical line terminal and a first optical network unit, and at least two optical communication lines are provided between the optical line terminal and the first optical network unit. In the case that the first optical communication line of the at least two optical communication lines fails, the second optical communication line of the at least two optical communication lines is switched to communicate, thereby realizing the communication in the vehicle by using the optical network. In this way, the demand for the bandwidth and the like of the in-vehicle communication can be met, and the optical communication lines in the in-vehicle optical network are redundantly backed up, thereby the optical communication lines can be protected and switched, and the stability and reliability of the in-vehicle optical network are improved.

[0122] In some embodiments, the optical line terminal comprises a first optical communication port and a second optical communication port. The first optical communication port is communicatively connected with the first optical network unit through a first optical communication line, and the second optical communication port is communicatively connected with the first optical network unit through a second optical communication line. When at least one of the first optical communication port or the first optical communication line fails, the optical line terminal and the first optical network unit communicate through the second optical communication port and the second optical communication line.

[0123] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter disposed on the first optical communication line, and the first optical splitter is communicatively connected with the first optical communication port.

[0124] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connected with the first optical splitter and a plurality of first sub-lines. The first main line is communicatively connected with the first optical splitter and the first optical communication port, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal through different first sub-lines via the first optical splitter.

[0125] In some embodiments, the vehicle-mounted optical network further comprises a second optical splitter disposed on the second optical communication line, and the second optical splitter is communicatively connected with the second optical communication port. The second optical communication line comprises a second main line connected with the second optical splitter and a plurality of second sub-lines. The second main line is communicatively connected with the second optical splitter and the second optical communication port, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal through different second sub-lines via the second optical splitter.

[0126] In some embodiments, the vehicle-mounted optical network further comprises a third optical splitter connected with one first sub-line; or, the vehicle-mounted optical network further comprises a fourth optical splitter connected with one second sub-line; or, the vehicle-mounted optical network further comprises a third optical splitter connected with one first sub-line and a fourth optical splitter connected with one second sub-line.

[0127] In some embodiments, the first optical communication line is provided with a first optical fiber, and the second optical communication line is provided with a second optical fiber. The optical line terminal is communicatively connected with the first optical network unit through the first optical fiber in the first optical communication line, and the optical line terminal is communicatively connected with the first optical network unit through the second optical fiber in the second optical communication line.

[0128] When the first optical fiber in the first optical communication line fails, the optical line terminal and the first optical network unit communicate through the second optical fiber in the second optical communication line.

[0129] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter disposed between the first optical communication line and the second optical communication line. The first optical splitter is communicatively connected with the optical line terminal via the first optical fiber or the second optical fiber.

[0130] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line and a plurality of first sub-lines connecting the first optical splitter. The first main line connects the first optical splitter and the optical line terminal via the first optical fiber, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the first optical splitter via different first sub-lines.

[0131] In some embodiments, the second optical communication line comprises a second main line and a plurality of second sub-lines connecting the second optical splitter. The second main line connects the second optical splitter and the optical line terminal via the second optical fiber, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the second optical splitter via different second sub-lines.

[0132] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter and a second optical splitter. The first optical splitter is communicatively connected with the first optical network unit and the optical line terminal via a first optical communication line, and the second optical splitter is communicatively connected with the first optical network unit and the optical line terminal via a second optical communication line.

[0133] In the event of a failure in at least one of the first optical splitter or the first optical communication line, the optical line terminal and the first optical network unit are communicatively connected via the second optical splitter and the second optical communication line.

[0134] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line and a plurality of first sub-lines connecting the first optical splitter. The first main line communicatively connects the first optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the first optical splitter via different first sub-lines.

[0135] In some embodiments, the second optical communication line comprises a second main line and a plurality of second sub-lines connecting the second optical splitter. The second main line communicatively connects the second optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected with the optical line terminal via the second optical splitter via different second sub-lines.

[0136] In some embodiments, in the case that the optical line terminal is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal.

[0137] Alternatively, in the case that the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0138] Alternatively, in the case that the optical line terminal is provided with at least two optical communication ports and the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal, and the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0139] In some embodiments, the optical line terminal is connected to any one or more of the following components respectively:

[0140] a central computing platform, a whole-vehicle control module, an intelligent cockpit control module, an auxiliary driving control module.

[0141] In some embodiments, the first optical network unit is connected to any one or more of the following components respectively:

[0142] a sensor, an actuator.

[0143] FIG. 9 shows a flowchart of a communication method based on an in-vehicle optical network according to some embodiments of the present disclosure. The in-vehicle optical network includes an optical line terminal and a first optical network unit, and at least two optical communication lines (such as a first optical communication line and a second optical communication line) are provided between the optical line terminal and the first optical network unit.

[0144] As shown in FIG. 9, the communication method based on the in-vehicle optical network includes the following steps:

[0145] In step 801, when a fault occurs in a first optical communication line of the at least two optical communication lines, switching to a second optical communication line of the at least two optical communication lines for communication.

[0146] In some embodiments of the present disclosure, the vehicle-mounted optical network comprises an optical line terminal and a first optical network unit, and at least two optical communication lines are arranged between the optical line terminal and the first optical network unit. When a first optical communication line among the at least two optical communication lines fails, switching to a second optical communication line among the at least two optical communication lines for communication is implemented, so as to realize communication in a vehicle by using an optical network. In this way, the demand for bandwidth and the like of vehicle-mounted communication can be met, and the optical communication lines in the vehicle-mounted optical network are redundantly backed up, so as to protect the optical communication lines and improve the stability and reliability of the vehicle-mounted optical network.

[0147] In some embodiments, the optical line terminal comprises a first optical communication port and a second optical communication port. The first optical communication port is in communication connection with the first optical network unit through a first optical communication line, and the second optical communication port is in communication connection with the first optical network unit through a second optical communication line. When at least one of the first optical communication port or the first optical communication line fails, the optical line terminal and the first optical network unit are in communication through the second optical communication port and the second optical communication line.

[0148] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter arranged in the first optical communication line, and the first optical splitter is in communication connection with the first optical communication port.

[0149] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connected with the first optical splitter and a plurality of first sub-lines. The first main line is in communication connection with the first optical splitter and the first optical communication port, and the first optical network unit and the second optical network unit are in communication connection with the optical line terminal through different first sub-lines via the first optical splitter.

[0150] In some embodiments, the vehicle-mounted optical network further comprises a second optical splitter arranged in the second optical communication line, and the second optical splitter is in communication connection with the second optical communication port. The second optical communication line comprises a second main line connected with the second optical splitter and a plurality of second sub-lines. The second main line is in communication connection with the second optical splitter and the second optical communication port, and the first optical network unit and the second optical network unit are in communication connection with the optical line terminal through different second sub-lines via the second optical splitter.

[0151] In some embodiments, the vehicle-mounted optical network further comprises a third optical splitter connected to a first sub-line; or, the vehicle-mounted optical network further comprises a fourth optical splitter connected to a second sub-line; or, the vehicle-mounted optical network further comprises a third optical splitter connected to a first sub-line and a fourth optical splitter connected to a second sub-line.

[0152] In some embodiments, the first optical communication line is provided with a first optical fiber, and the second optical communication line is provided with a second optical fiber. The optical line terminal is communicatively connected to the first optical network unit through the first optical fiber in the first optical communication line, and is communicatively connected to the first optical network unit through the second optical fiber in the second optical communication line.

[0153] In the event of a failure of the first optical fiber in the first optical communication line, the optical line terminal and the first optical network unit are communicatively connected through the second optical fiber in the second optical communication line.

[0154] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter provided in the first optical communication line and the second optical communication line, and the first optical splitter is communicatively connected to the optical line terminal through the first optical fiber or the second optical fiber.

[0155] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, and the first optical communication line comprises a first main line connected to the first optical splitter and a plurality of first sub-lines. The first main line is connected to the first optical splitter and the optical line terminal through the first optical fiber, and the first optical network unit and the second optical network unit are communicatively connected to the optical line terminal through different first sub-lines via the first optical splitter.

[0156] In some embodiments, the second optical communication line comprises a second main line connected to the first optical splitter and a plurality of second sub-lines. The second main line is connected to the first optical splitter and the optical line terminal through the second optical fiber, and the first optical network unit and the second optical network unit are communicatively connected to the optical line terminal through different second sub-lines via the first optical splitter.

[0157] In some embodiments, the vehicle-mounted optical network further comprises a first optical splitter and a second optical splitter. The first optical splitter is communicatively connected to the first optical network unit and the optical line terminal through the first optical communication line, and the second optical splitter is communicatively connected to the first optical network unit and the optical line terminal through the second optical communication line.

[0158] In the event of a failure of at least one of the first optical splitter or the first optical communication line, the optical line terminal and the first optical network unit are communicatively connected through the second optical splitter and the second optical communication line.

[0159] In some embodiments, the vehicle-mounted optical network further comprises a second optical network unit, the first optical communication line comprises a first main line connecting the first optical splitter and a plurality of first sub-lines. The first main line is communicatively connected to the first optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected to the optical line terminal through different first sub-lines via the first optical splitter.

[0160] In some embodiments, the second optical communication line comprises a second main line connecting the second optical splitter and a plurality of second sub-lines. The second main line is communicatively connected to the second optical splitter and the optical line terminal, and the first optical network unit and the second optical network unit are communicatively connected to the optical line terminal through different second sub-lines via the second optical splitter.

[0161] In some embodiments, in the case that the optical line terminal is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal.

[0162] Alternatively, in the case that the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0163] Alternatively, in the case that the optical line terminal is provided with at least two optical communication ports and the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal is synchronized to the other of the at least two optical communication ports of the optical line terminal, and the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

[0164] In some embodiments, the optical line terminal is connected to any one or more of the following components respectively:

[0165] A central computing platform, a whole vehicle control module, an intelligent cockpit control module, an auxiliary driving control module.

[0166] In some embodiments, the first optical network unit is connected to any one or more of the following components respectively:

[0167] A sensor, an actuator.

[0168] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present disclosure are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of countries and regions, and provide corresponding operation portal for user to select authorization or rejection.

[0169] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0170] Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, device or computer program product. Therefore, the embodiments of the present disclosure can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present disclosure can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk memory, compact disc read-only memory (CD-ROM), optical memory, etc.) containing computer usable program code.

[0171] The embodiments of the present disclosure are described with reference to at least one of the flowcharts or block diagrams according to the method, terminal device (system) and computer program product of the embodiments of the present disclosure. It should be understood that at least one of each flow or block in the flowchart or block diagram, and the combination of at least one of the flows or blocks in the flowchart or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate a device for realizing the functions specified in one or more flows of the flowchart, one or more blocks of the block diagram, or one or more flows of the flowchart and one or more blocks of the block diagram.

[0172] These computer program instructions can also be stored in a computer readable storage medium that can guide the computer or other programmable data processing terminal device to work in a specific way, so that the instructions stored in the computer readable storage medium generate a product including instruction devices, which realize the functions specified in one or more flows of the flowchart, one or more blocks of the block diagram, or one or more flows of the flowchart and one or more blocks of the block diagram.

[0173] These computer program instructions can also be loaded into a computer or other programmable data processing terminal devices, so that a series of operational steps are performed on the computer or other programmable terminal devices to generate a computer-implemented process, thus the instructions executed on the computer or other programmable terminal devices provide steps for implementing the functions specified in one or more flows of the flowchart, one or more blocks of the block diagram, or one or more flows of the flowchart and one or more blocks of the block diagram.

[0174] Although the preferred embodiments of the present disclosure have been described, those skilled in the art who have the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present disclosure.

[0175] "at least one of A, B, and C" has the same meaning as "at least one of A, B, or C" both include the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0176] Finally, it should also be noted that, in this document, relational terms such as first and second and the like can merely be used to distinguish one entity or action from another, without necessarily requiring or implying that there is any such actual relationship or order between or among these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or terminal device. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0177] The above provides a vehicle-mounted optical network, a vehicle, and a communication method based on the vehicle-mounted optical network, and the principles and implementation manners of the present disclosure are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present disclosure and its core idea; meanwhile, for those skilled in the art, according to the idea of the present disclosure, the specific implementation manners and application ranges will be changed, and the above description of the present disclosure should not be understood as a limitation.

Claims

1. An optical network unit (100) for a vehicle, comprising an optical line terminal (101) and a first optical network unit; At least two optical communication lines are provided between the optical line terminal (101) and the first optical network unit, the at least two optical communication lines comprising a first optical communication line and a second optical communication line, so as to switch to the second optical communication line in the at least two optical communication lines for communication when a fault occurs in the first optical communication line in the at least two optical communication lines.

2. The vehicle-mounted optical network (100) according to claim 1, wherein The optical line terminal (101) comprises a first optical communication port and a second optical communication port, the first optical communication port being in communication connection with the first optical network unit through the first optical communication line, and the second optical communication port being in communication connection with the first optical network unit through the second optical communication line, the optical line terminal (101) and the first optical network unit being in communication through the second optical communication port and the second optical communication line when at least one of the first optical communication port or the first optical communication line fails.

3. The optical network unit (100) according to claim 2, further comprising a first optical splitter provided in the first optical communication line, the first optical splitter being in communication connection with the first optical communication port.

4. The optical network unit (100) according to claim 3, further comprising a second optical network unit, the first optical communication line comprising a first main line connecting the first optical splitter and a plurality of first sub-lines, the first main line being in communication connection with the first optical splitter and the first optical communication port, the first optical network unit and the second optical network unit being in communication connection with the optical line terminal (101) through the first optical splitter via different first sub-lines in the plurality of first sub-lines.

5. The optical network unit (100) according to claim 4, further comprising a second optical splitter provided in the second optical communication line, the second optical splitter being in communication connection with the second optical communication port, the second optical communication line comprising a second main line connecting the second optical splitter and a plurality of second sub-lines, the second main line being in communication connection with the second optical splitter and the second optical communication port, the first optical network unit and the second optical network unit being in communication connection with the optical line terminal (101) through the second optical splitter via different second sub-lines in the plurality of second sub-lines.

6. The optical network unit (100) according to claim 5, further comprising at least one of: a third optical splitter connecting one first sub-line in the plurality of first sub-lines; or a fourth optical splitter connecting one second sub-line in the plurality of second sub-lines.

7. The vehicle-mounted optical network (100) according to claim 1, wherein The first optical communication line is provided with a first optical fiber, and the second optical communication line is provided with a second optical fiber, the optical line terminal (101) being in communication connection with the first optical network unit through the first optical fiber in the first optical communication line, and the optical line terminal (101) being in communication connection with the first optical network unit through the second optical fiber in the second optical communication line; In the event of a fault in the first optical fiber in the first optical communication line, the optical line termination (101) and the first optical network unit communicate via the second optical fiber in the second optical communication line.

8. The vehicle-mounted optical network (100) of claim 7, further comprising a first optical splitter disposed in the first optical communication line and the second optical communication line, the first optical splitter being communicatively connected to the optical line termination (101) via the first optical fiber or the second optical fiber.

9. The vehicle-mounted optical network (100) of claim 8, further comprising a second optical network unit, the first optical communication line comprising a first main line connecting the first optical splitter and a plurality of first sub-lines, the first main line connecting the first optical splitter and the optical line termination (101) via the first optical fiber, the first optical network unit and the second optical network unit being communicatively connected to the optical line termination (101) via the first optical splitter via different ones of the plurality of first sub-lines.

10. The vehicle-mounted optical network (100) according to claim 9, wherein the second optical communication line comprising a second main line connecting the first optical splitter and a plurality of second sub-lines, the second main line connecting the first optical splitter and the optical line termination (101) via the second optical fiber, the first optical network unit and the second optical network unit being communicatively connected to the optical line termination (101) via the first optical splitter via different ones of the plurality of second sub-lines.

11. The vehicle-mounted optical network (100) of claim 1, further comprising a first optical splitter and a second optical splitter, the first optical splitter being communicatively connected to the first optical network unit and the optical line termination (101) via the first optical communication line, the second optical splitter being communicatively connected to the first optical network unit and the optical line termination (101) via the second optical communication line; In the event of a fault in at least one of the first optical splitter or the first optical communication line, the optical line termination (101) and the first optical network unit communicate via the second optical splitter and the second optical communication line.

12. The vehicle-mounted optical network (100) of claim 11, further comprising a second optical network unit, the first optical communication line comprising a first main line connecting the first optical splitter and a plurality of first sub-lines, the first main line communicatively connecting the first optical splitter and the optical line termination (101), the first optical network unit and the second optical network unit being communicatively connected to the optical line termination (101) via the first optical splitter via different ones of the plurality of first sub-lines.

13. The vehicle-mounted optical network (100) according to claim 12, wherein the second optical communication line comprising a second main line connecting the second optical splitter and a plurality of second sub-lines, the second main line communicatively connecting the second optical splitter and the optical line termination (101), the first optical network unit and the second optical network unit being communicatively connected to the optical line termination (101) via the second optical splitter via different ones of the plurality of second sub-lines.

14. The vehicle-mounted optical network (100) according to any one of claims 1 to 13, satisfying at least one of: in a case where the optical line terminal (101) is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the optical line terminal (101) is synchronized to the other of the at least two optical communication ports of the optical line terminal (101); or in a case where the first optical network unit is provided with at least two optical communication ports, the service configuration information of one of the at least two optical communication ports of the first optical network unit is synchronized to the other of the at least two optical communication ports of the first optical network unit.

15. The vehicle-mounted optical network (100) according to any one of claims 1 to 14, wherein the optical line terminal (101) is connected to any one or more of the following components respectively: a central computing platform, a vehicle control module, an intelligent cockpit control module, an auxiliary driving control module.

16. The vehicle-mounted optical network (100) according to any one of claims 1 to 15, wherein the first optical network unit is connected to any one or more of the following components respectively: a sensor, an actuator.

17. A vehicle (1000) comprising the vehicle-mounted optical network (100) according to any one of claims 1 to 16.

18. A communication method based on the vehicle-mounted optical network (100) according to any one of claims 1 to 16, comprising: in a case where a first optical communication line of the at least two optical communication lines fails, switching to a second optical communication line of the at least two optical communication lines for communication.

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