Vehicle-mounted communication system, electronic and electrical system and vehicle
By employing fiber optic communication and gateway power status synchronization control in the vehicle communication network, the problems of insufficient communication bandwidth and high power consumption are solved, achieving efficient data transmission and low power management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2024-10-31
- Publication Date
- 2026-05-01
AI Technical Summary
Existing vehicle communication networks have insufficient communication bandwidth and high power consumption, which cannot meet the data transmission requirements of vehicle functions.
Optical fiber communication is used to replace the electrical communication network between gateways, and the power consumption of the optical signal communication module is synchronously controlled by the network management state switching of the gateway to ensure reduced power consumption in the sleep state.
It improves the data transmission efficiency of the vehicle communication network, optimizes energy management, enhances the reliability and stability of the system, and reduces power consumption.
Smart Images
Figure CN121967445A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle-mounted optical communication technology, and in particular to a vehicle-mounted communication system, electronic and electrical system, and vehicle. Background Technology
[0002] With the continuous development of vehicle technology, the types and number of vehicle functions are also increasing rapidly, resulting in the existing vehicle communication network bandwidth being insufficient to meet the data transmission needs of various vehicle functions.
[0003] In related technologies, in order to improve the bandwidth of vehicle communication, various communication methods such as 100 Mbps Ethernet, Gigabit Ethernet and dedicated communication lines have emerged in vehicle communication networks. However, since vehicles have high power consumption requirements for vehicle communication networks, there is an urgent need for a mechanism that can manage the power consumption of vehicle communication networks. Summary of the Invention
[0004] The purpose of this application is to provide an in-vehicle communication system, an electronic and electrical system, and a vehicle for power consumption management of the in-vehicle communication network.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] This application provides a vehicle-mounted communication system, including: a first gateway and a second gateway, with optical fiber communication between the first gateway and the second gateway; the first gateway is responsible for communication with an electronic control unit in a first regional network based on electrical signals, and the second gateway is responsible for communication with an electronic control unit in a second regional network based on electrical signals; both the first gateway and the second gateway include an electrical signal communication module and an optical signal communication module; the first gateway is configured to control the power consumption operation state of the optical signal communication module in the first gateway based on the network management state of the first gateway; and / or, the second gateway is configured to control the power consumption operation state of the optical signal communication module in the second gateway based on the network management state of the second gateway.
[0007] The fiber optic communication between the first gateway and the second gateway can be implemented based on the 10-gigabit symmetric passive optical network (XGS-PON) protocol.
[0008] The vehicle communication system provided in this application improves the data transmission efficiency in the vehicle network by replacing the electrical communication network between gateways with optical fiber communication. At the same time, each gateway can synchronously control its own optical signal communication module to switch to the corresponding power consumption state when its network management state changes, thereby controlling the communication state of the motor control unit in its corresponding area network. This achieves the matching of the network management state within the gateway with the power consumption of the optical signal communication module, avoiding the optical signal communication module remaining in a high power consumption state when the gateway is in a sleep state, thereby reducing the power consumption of the vehicle communication network.
[0009] In some embodiments, the network management states described above include at least one of the following: duplicate message state, normal operation state, ready to hibernate state, and bus hibernation state.
[0010] In this way, by setting different network management states, energy management can be optimized, system reliability and stability can be enhanced, and network management flexibility can be improved.
[0011] In some embodiments, the power consumption operating states include a low-power operating state and a full-power operating state, wherein the power consumption in the low-power operating state is less than the power consumption in the full-power operating state.
[0012] In some embodiments, when the optical signal communication module is the optical signal communication module of an optical line terminal (OLT), the low-power operation state includes: low-power sleep state, and the full-power operation state includes: alert sleep state, forced wake-up state, and free wake-up state.
[0013] In some embodiments, when the optical signal communication module is the optical signal communication module of an optical network unit (ONU), the low-power operation state includes a low-power sleep state, and the full-power operation state includes an active hold state, an active idle state, and a sensing state.
[0014] In this way, by setting different power consumption states, it is easy to set different power consumption for different network management states of the gateway, which enables fine-grained management of network management energy consumption and saves power consumption.
[0015] In some embodiments, when the network management state of the first gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module switches to the full power consumption operation state.
[0016] Based on this, this application controls the optical signal communication module in the gateway to switch its power consumption state when the gateway's operating state changes, so that when the gateway is in operation, the optical signal communication module synchronously enters the normal power consumption operating state to ensure normal communication.
[0017] In some embodiments, the electrical signal communication module in the first gateway is configured to send a local wake-up indication message to the optical signal communication module when the first gateway switches from a bus sleep state to a repeat message state; the optical signal communication module in the first gateway is configured to switch from a low-power operation state to a full-power operation state upon receiving the local wake-up indication message.
[0018] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module in the OLT is configured to: upon receiving a local wake-up indication message, switch from a low-power sleep state to an alert sleep state and send a first message to the ONU, the first message being used to wake up the optical signal communication module in the ONU; upon receiving a second message, switch from the alert sleep state to a forced wake-up state, the second message being used to indicate that the optical signal communication module in the ONU has been woken up.
[0019] Based on this, the vehicle communication system provided in this application can synchronously send power state switching instructions to other slave ONU gateways after the optical signal communication module of the master OLT gateway switches to the normal power consumption state, so that different gateways can enter the normal power consumption state synchronously, thereby ensuring the normal communication of the entire vehicle communication network.
[0020] In some embodiments, the optical signal communication module in the ONU is configured to: upon receiving a first message, switch from a low-power sleep state to an active hold state and send a second message to the OLT.
[0021] In some embodiments, when the network management state of the first gateway transitions to a sleep-ready state, the power consumption operation state of the optical signal communication module switches to a low-power operation state.
[0022] Based on this, this application controls the optical signal communication module in the gateway to switch its power consumption state when the gateway's operating state changes, so that when the gateway is in sleep mode, the optical signal communication module synchronously enters low-power operation, thereby reducing the power consumption of the gateway's optical signal communication module.
[0023] In some embodiments, the electrical signal communication module of the first gateway is configured to send local sleep indication information to the optical signal communication module of the first gateway when the first gateway switches from normal operation state to sleep preparation state; the optical signal communication module of the first gateway is configured to switch from full power operation state to low power operation state upon receiving the local sleep indication information.
[0024] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the OLT is configured to: upon receiving local sleep indication information, switch from a forced wake-up state to a free wake-up state and send a third message to the ONU, the third message being used to request the ONU's optical signal communication module to go into sleep mode; upon receiving a fourth message, switch from a free wake-up state to a low-power sleep state, the fourth message being used to indicate that the ONU's optical signal communication module is in sleep mode.
[0025] Based on this, the vehicle communication system provided in this application can synchronously send power state switching instructions to other slave ONU gateways after the optical signal communication module of the master OLT gateway switches to a low power state, so that different gateways can enter the low power state synchronously, thereby reducing the power consumption of the entire vehicle communication network.
[0026] In some embodiments, the optical signal communication module of the ONU is configured to: upon receiving a third message, switch from an active hold state to a sensing state and send a fourth message to the first gateway.
[0027] In some embodiments, the first gateway is further configured to control the network management state of the first gateway based on the power consumption operating state of the optical signal communication module in the first gateway.
[0028] Based on this, the gateway in this application can also adjust the network management status synchronously according to the power consumption status of its own optical signal communication module, so as to ensure the power consumption of the components within the gateway is synchronized.
[0029] In some embodiments, the first gateway is configured to switch from the bus sleep state to the repeat message state when the first gateway is currently in a bus sleep state and the optical signal communication module in the first gateway switches from a low-power operation state to a full-power operation state.
[0030] In some embodiments, the optical signal communication module of the first gateway is configured to send a local wake-up indication message to the electrical signal communication module of the first gateway when the first gateway is currently in a bus sleep state and the optical signal communication module in the first gateway switches from a low-power operation state to a full-power operation state; the electrical signal communication module of the first gateway is configured to switch from a bus sleep state to a repeating message state upon receiving the local wake-up indication message.
[0031] In some embodiments, the second gateway is configured such that when the network management state of the second gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module switches to the full power consumption operation state.
[0032] In some embodiments, the electrical signal communication module in the second gateway is configured to send a local wake-up indication message to the optical signal communication module when the second gateway switches from a bus sleep state to a repeat message state; the optical signal communication module in the second gateway is configured to switch from a low-power operation state to a full-power operation state upon receiving the local wake-up indication message.
[0033] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module in the ONU is configured to: upon receiving a local wake-up indication message, switch from a low-power sleep state to an active hold state and send a second message to the OLT, the second message being used to wake up the optical signal communication module in the OLT; and if no wake-up request is received within a first preset time period, switch from the active hold state to the active idle state.
[0034] Based on this, the vehicle communication system provided in this application can synchronously send a power consumption state switching command to the master OLT gateway after the optical signal communication module of the slave ONU gateway switches to the normal power consumption state, so that the master and slave gateways can synchronously enter the normal power consumption state, thereby ensuring the normal communication of the entire vehicle communication network.
[0035] In some embodiments, the optical signal communication module in the OLT described above is configured to switch from a low-power sleep state to a forced wake-up state upon receiving a second message.
[0036] In some embodiments, when the network management state of the second gateway switches to a sleep-ready state, the power consumption operation state of the optical signal communication module switches to a low-power operation state.
[0037] In some embodiments, the electrical signal communication module of the second gateway is configured to send local sleep indication information to the optical signal communication module of the second gateway when the second gateway switches from normal operation state to sleep preparation state; the optical signal communication module of the second gateway is configured to switch from full power operation state to low power operation state upon receiving the local sleep indication information.
[0038] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the ONU is configured to: upon receiving local sleep indication information, switch from an active idle state to a sensing state and send a fourth message to the OLT, the fourth message being used to request the optical signal communication module of the OLT to go into sleep mode; and if no wake-up request is received within a second preset time period, switch from the sensing state to a low-power sleep state.
[0039] Based on this, the vehicle communication system provided in this application can synchronously send a power state switching command to the master OLT gateway after the optical signal communication module of the slave ONU gateway switches to a low power state, so that the master and slave gateways can enter the low power state synchronously, thereby reducing the power consumption of the entire vehicle communication network.
[0040] In some embodiments, the optical signal communication module of the OLT described above is configured to: upon receiving a fourth message, switch from a free wake-up state to a low-power sleep state.
[0041] In some embodiments, the second gateway is further configured to control the network management state of the second gateway based on the power consumption operating state of the optical signal communication module in the second gateway.
[0042] In some embodiments, the second gateway is configured to switch from the bus sleep state to the repeat message state when the second gateway is currently in a bus sleep state and the optical signal communication module in the second gateway switches from a low-power operation state to a full-power operation state.
[0043] In some embodiments, the optical signal communication module of the second gateway is configured to send a local wake-up indication message to the electrical signal communication module of the second gateway when the second gateway is currently in a bus sleep state and the optical signal communication module in the second gateway switches from a low-power operation state to a full-power operation state; the electrical signal communication module of the second gateway is configured to switch from the bus sleep state to the repeat message state upon receiving the local wake-up indication message.
[0044] This application provides an electronic and electrical system, including the vehicle communication system described in any of the above embodiments. This application provides a vehicle, including the above electronic and electrical system. Attached Figure Description
[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0046] Figure 1 An architecture diagram of an in-vehicle communication system provided in an embodiment of this application;
[0047] Figure 2 A schematic diagram illustrating the mapping relationship between network management state and power consumption operation state provided in an embodiment of this application;
[0048] Figure 3A schematic diagram of logic control based on downlink wake-up and downlink sleep provided for embodiments of this application;
[0049] Figure 4 A schematic diagram of logic control based on uplink wake-up and uplink sleep provided for embodiments of this application;
[0050] Figure 5 This is a wake-up logic diagram of an in-vehicle communication system provided in an embodiment of this application. Detailed Implementation
[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0052] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.
[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0055] In some embodiments, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, 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, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.
[0056] In some embodiments, the words "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0057] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0058] Currently, vehicle communication networks typically use 100 Mbps Ethernet, Gigabit Ethernet, or dedicated communication lines as the backbone to transmit various types of data within the vehicle. However, the increasing number of signal lines leads to higher material costs for vehicle communication networks, and also limits the upper limit of transmission bandwidth.
[0059] For example, the current mainstream network architecture mainly uses Controller Area Network (CAN), CAN with flexible data rate (CAN FD), and Ethernet as the backbone network, and adopts direct network management or indirect network management.
[0060] To address the limitations of transmission bandwidth and the high cost of signal cables, optical communication technology from the internet can be applied to in-vehicle communication networks. Because optical communication offers high bandwidth, high reliability, low latency, and low cost, it can solve the problems of limited bandwidth and high material costs in in-vehicle communication.
[0061] In related technologies, optical communication, whether in data centers or broadband internet transmission scenarios, typically uses devices that are always powered, so the requirements for power consumption and wake-up / sleep modes are not high. However, since vehicles use rechargeable batteries, the application of optical communication in vehicular communication networks requires strict control. The communication module must be able to shut down or enter a low-power state when there is no network communication demand, and be able to quickly wake up and establish a communication link when communication is needed, thereby meeting the vehicle's requirements for low power consumption and high timeliness.
[0062] Against this backdrop, in order to manage the power consumption of in-vehicle communication networks, this application provides an in-vehicle communication system, an electronic and electrical system, and a vehicle. The implementation methods of the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0063] like Figure 1 The diagram shown is an architecture diagram of an in-vehicle communication system provided in an embodiment of this application. The in-vehicle communication system 100 includes a first gateway 110, a second gateway 120, a first local area network 130, and a second local area network 140. The first local area network 130 includes a first ECU 131, a second ECU 132, and a third ECU 133. The second local area network 140 includes a fourth ECU 141 and a fifth ECU 142.
[0064] Specifically, the first gateway 110 communicates with the second gateway 120 via optical fiber; the first gateway 110 communicates with the first ECU 131 and the second ECU 132 via CAN FD1; the first gateway 110 communicates with the third ECU 133 via CAN FD2; the second gateway 120 communicates with the fourth ECU 141 via Ethernet; and the second gateway 120 communicates with the fifth ECU 142 via CAN FD3.
[0065] In some embodiments, the first gateway 110 is configured to control the power consumption operation state of the optical signal communication module in the first gateway 110 based on the network management state of the first gateway 110.
[0066] For example, when the first gateway 110 is an OLT, the network management state of the first gateway includes at least: duplicate message state, normal operation state, ready to hibernate state, and bus hibernation state.
[0067] The duplicate message state is a temporary state adopted by a node after it is woken up from a sleep or low-activity state in order to re-establish network communication. In the duplicate message state, the node repeatedly sends network management messages to wake up other nodes on the bus and re-establish network synchronization.
[0068] Normal operation is the primary working state of a node, indicating that the node is fully awake and capable of normal network communication. In repeating message state, the node can send and receive network management messages and perform its pre-defined network functions and tasks.
[0069] The prepare-to-sleep state is a transitional state for a node before it transitions from normal operation to sleep mode. In this state, the node stops sending network management messages but may still receive and process application messages to complete necessary pre-sleep preparations. When a node meets the sleep conditions and is ready to enter bus sleep mode, it first enters the prepare-to-sleep state and waits for the timer to expire before officially entering bus sleep mode.
[0070] Bus sleep mode is a low-power state used to reduce power consumption when the system does not require network communication. In bus sleep mode, nodes enter a low-power mode, ceasing to send and receive any messages until they are woken up. When all nodes in the system enter sleep mode, the entire system also enters sleep mode, thus saving energy.
[0071] In some embodiments, the power consumption operating states of the optical signal communication module include a low-power operating state and a full-power operating state, wherein the power consumption in the low-power operating state is less than the power consumption in the full-power operating state.
[0072] For example, when the first gateway 110 is an OLT, the low-power operation state of the optical signal communication module of the first gateway includes: low-power sleep state; the full-power operation state of the optical signal communication module of the first gateway includes: alert sleep state, forced wake-up state and free wake-up state.
[0073] Low-power sleep state refers to the optical signal communication module entering a low-power mode when there is no communication demand, thus limiting network usage and saving power.
[0074] Alert sleep state refers to a node in a sleep or low-power state that can respond to certain alarms or triggering conditions to wake up immediately when a communication request is detected.
[0075] Forced wake-up state refers to a node being forced into a wake-up state, remaining awake even without user interaction or when certain conditions are met, in order to ensure normal network communication.
[0076] Free wake-up state refers to the wake-up state that a node maintains naturally without any external coercive factors. In the free wake-up state, if a node receives a sleep command, it will enter a low-power sleep state.
[0077] In some embodiments, the second gateway 120 is configured to control the power consumption operation state of the optical signal communication module in the second gateway based on the network management state of the second gateway.
[0078] For example, when the second gateway 120 is an ONU, the network management state of the second gateway includes at least: duplicate message state, normal operation state, ready to hibernate state, and bus hibernation state.
[0079] In some embodiments, the power consumption operating states of the optical signal communication module include a low-power operating state and a full-power operating state.
[0080] For example, when the second gateway 120 is an ONU, the low-power operation state of the optical signal communication module of the second gateway includes: low-power sleep state; the full-power operation state of the optical signal communication module of the second gateway includes: active hold state, active idle state and sensing state.
[0081] The active hold state refers to a node that, while operating normally, can respond to the interaction information of other nodes to maintain normal network communication. In the active hold state, the node consumes higher power consumption to maintain data transmission and signal processing functions.
[0082] The active idle state refers to a node that is in an active state but has no actual data transmission or reception tasks. In the active idle state, the node is ready to respond to new communication requests at any time, and the node's power consumption may be slightly lower than in the active hold state.
[0083] The sensing state refers to a node that can only support basic signal sensing and data processing capabilities, but will not perform actual data transmission. In the sensing state, the node's power consumption will be lower than in the active hold state.
[0084] In the vehicle communication system provided in this application embodiment, by replacing the electrical communication network between gateways with optical fiber communication, the data transmission efficiency in the vehicle network is improved. At the same time, when each gateway changes its own network management state, it can synchronously control its own optical signal communication module to switch to the corresponding power consumption state, thereby controlling the communication state of the motor control unit in its corresponding area network. This achieves the matching of the network management state within the gateway with the power consumption of the optical signal communication module, avoiding the optical signal communication module remaining in a high power consumption state when the gateway is in a sleep state, thereby reducing the power consumption of the vehicle communication network.
[0085] like Figure 2 The diagram shown is a schematic representation of the mapping relationship between network management state and power consumption operation state provided in an embodiment of this application.
[0086] In some embodiments, taking the first gateway as an OLT and the second gateway as an ONU as an example, the network management states of the OLT include repeating message state, normal operation state, ready to sleep state, and bus sleep state. The power consumption operation states of the OLT include low-power sleep state, alert sleep state, forced wake-up state, and free wake-up state. The network management states of the ONU include repeating message state, normal operation state, ready to sleep state, and bus sleep state. The power consumption operation states of the ONU include low-power sleep state, active hold state, active idle state, and sensing state.
[0087] It should be noted that a detailed description of the network management status and power consumption operation status of the OLT and ONU can be found above. Figure 1 The descriptions of network management status and power consumption status are not repeated here.
[0088] As mentioned above Figure 1 In one optional implementation, the first gateway is configured to control the power consumption and operating status of the optical signal communication module in the first gateway based on the network management status of the first gateway.
[0089] Optionally, when the network management state of the first gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module of the first gateway switches to the full power consumption operation state.
[0090] For example, taking the downlink wake-up as an example, the first gateway is configured to: in response to the first gateway switching from the bus sleep state to the repeat message state, control the optical signal communication module to switch from the low power operation state to the full power operation state.
[0091] Thus, this application controls the optical signal communication module within the gateway to switch its power consumption state when the gateway's operating state changes, so that when the gateway is in operation, the optical signal communication module synchronously enters the normal power consumption operating state, ensuring normal communication.
[0092] Specifically, during the downlink wake-up process, the electrical signal communication module in the first gateway is configured to send a local wakeup indication (LWI) message to the optical signal communication module when the first gateway switches from the bus sleep state to the repeat message state; the optical signal communication module in the first gateway is configured to switch from the low-power operation state to the full-power operation state upon receiving the local wakeup indication message.
[0093] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module in the OLT is configured to: upon receiving LWI information, switch from a low-power sleep state to an alert sleep state and send a first message to the ONU; upon receiving a second message, switch from the alert sleep state to a forced wake-up state; and the optical signal communication module in the ONU is configured to: upon receiving the first message, switch from a low-power sleep state to an active hold state and send a second message to the OLT.
[0094] The first message is used to wake up the optical signal communication module in the ONU, and the second message is used to indicate that the optical signal communication module in the ONU has been woken up.
[0095] For example, combined Figure 2 ,like Figure 3 As shown, taking the OLT as the first gateway and the ONU as the second gateway as an example, when the network management state of the OLT transitions from bus sleep state to repeating message state, the electrical signal communication module in the OLT sends LWI information to the optical signal communication module. At this time, the optical signal communication module in the OLT responds to the LWI information, transitions from low-power sleep state to alert sleep state, and simultaneously sends a first message (such as a disable sleep permission message) to the ONU, and sets the forced wakeup indication (FWI). After receiving the disable sleep permission message, the optical signal communication module in the ONU responds to the disable sleep permission message, transitions from low-power sleep state to active hold state, and simultaneously sends a second message (such as a request to wake up sleep message) to the OLT. After receiving the request to wake up sleep message, the optical signal communication module in the OLT responds to the request to wake up sleep message, and transitions from alert sleep state to forced wakeup state.
[0096] Thus, the vehicle communication system provided in this application can synchronously send power state switching instructions to other slave ONU gateways after the optical signal communication module of the master OLT gateway switches to the normal power consumption state, so that different gateways can enter the normal power consumption state synchronously, thereby ensuring the normal communication of the entire vehicle communication network.
[0097] Furthermore, the second gateway is also configured to control the network management status of the second gateway based on the power consumption and operating status of the optical signal communication module in the second gateway.
[0098] In some embodiments, the second gateway is configured to switch from the bus sleep state to the repeat message state when the second gateway is currently in a bus sleep state and the optical signal communication module in the second gateway switches from a low-power operation state to a full-power operation state.
[0099] Specifically, the optical signal communication module of the second gateway is configured to send a local wake-up indication message to the electrical signal communication module of the second gateway when the second gateway is currently in a bus sleep state and the optical signal communication module in the second gateway switches from a low-power operation state to the full-power operation state; the electrical signal communication module of the second gateway is configured to switch from a bus sleep state to a repeat message state upon receiving the local wake-up indication message.
[0100] For example, such as Figure 3 As shown, taking the first gateway as an OLT and the second gateway as an ONU as an example, when the ONU is in bus sleep mode, if the ONU's optical signal communication module jumps from low-power sleep mode to active hold mode, it will send LWI to the ONU's electrical signal communication module. The ONU's electrical signal communication module will respond to the local wake-up instruction and control the ONU's network management state to jump from bus sleep mode to repeat message mode.
[0101] Thus, the gateway in this application can also adjust the network management status synchronously according to the power consumption status of its own optical signal communication module, ensuring that the power consumption of each component in the gateway is synchronized.
[0102] Optionally, when the network management state of the first gateway switches to the sleep preparation state, the power consumption operation state of the optical signal communication module in the first gateway switches to the low power consumption operation state.
[0103] For example, taking the downlink sleep mode as an example, the first gateway is configured to: in response to the first gateway switching from the normal operation state to the sleep preparation state, control the optical signal communication module to switch from the full power operation state to the low power operation state.
[0104] Thus, this application controls the optical signal communication module within the gateway to switch power consumption states when the gateway's operating state changes, so that when the gateway is in sleep mode, the optical signal communication module synchronously enters low-power operation, thereby reducing the power consumption of the gateway's optical signal communication module.
[0105] Specifically, the electrical signal communication module in the first gateway is configured to send local sleep indication (LSI) information to the optical signal communication module of the first gateway when the first gateway switches from normal operation state to sleep preparation state; the optical signal communication module in the first gateway is configured to switch from full power operation state to low power operation state upon receiving the local sleep indication information.
[0106] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the OLT is configured to: upon receiving local sleep indication information, switch from a forced wake-up state to a free wake-up state and send a third message to the ONU; upon receiving a fourth message, switch from a free wake-up state to a low-power sleep state; and the optical signal communication module of the ONU is configured to: upon receiving the third message, switch from an active-keep state to a sensing state and send a fourth message to the OLT.
[0107] The third message is used to request the ONU's optical signal communication module to go into sleep mode; the fourth message is used to indicate that the ONU's optical signal communication module is in sleep mode.
[0108] For example, such as Figure 3 As shown, taking the OLT as the first gateway and the ONU as the second gateway as an example, when the network management state of the OLT transitions from the normal operation state to the sleep preparation state, the electrical signal communication module in the OLT sends LSI information to the optical signal communication module. At this time, the optical signal communication module in the OLT responds to the LSI information, transitioning from the forced wake-up state to the free wake-up state, and simultaneously sends a third message (such as an enable sleep message) to the ONU. After receiving the enable sleep message, the optical signal communication module in the ONU responds to the enable sleep message, first transitioning from the active hold state to the active idle state, and then from the active idle state to the sensing state, while simultaneously sending a fourth message (such as a request sleep message) to the OLT. After receiving the request sleep message, the optical signal communication module in the OLT responds to the request sleep message, transitioning from the free wake-up state to the low-power sleep state.
[0109] Thus, the vehicle communication system provided in this application can synchronously send power state switching instructions to other slave ONU gateways after the optical signal communication module of the master OLT gateway switches to a low-power state, so that different gateways can enter the low-power state synchronously, thereby reducing the power consumption of the entire vehicle communication network.
[0110] Furthermore, the second gateway is also configured to control the network management status of the second gateway based on the power consumption and operating status of the optical signal communication module in the second gateway.
[0111] In some embodiments, the second gateway is configured to switch from the normal operating state to a sleep-ready state when the second gateway is currently in normal operating state and the optical signal communication module in the second gateway switches from a full power operation state to a low power operation state.
[0112] Specifically, the optical signal communication module of the second gateway is configured to send local sleep indication information to the electrical signal communication module of the second gateway when the second gateway is currently in normal operation and the optical signal communication module in the second gateway switches from full power operation to low power operation; the electrical signal communication module of the second gateway is configured to switch from normal operation to sleep preparation state upon receiving the local sleep indication information.
[0113] For example, such as Figure 3 As shown, taking the first gateway as an OLT and the second gateway as an ONU as an example, when the ONU is in normal operation, if the ONU's optical signal communication module switches from an active idle state to a sensing state, it will send LSI information to the ONU's electrical signal communication module. The ONU's electrical signal communication module will respond to the LSI information and control the ONU's network management state to switch from the normal operation state to the ready-to-sleep state.
[0114] Thus, the gateway in this application can also adjust the network management status synchronously according to the power consumption status of its own optical signal communication module, ensuring that the power consumption of each component in the gateway is synchronized.
[0115] As mentioned above Figure 1 In another optional implementation, the second gateway is configured to control the power consumption and operating status of the optical signal communication module in the second gateway based on the network management status of the second gateway.
[0116] Optionally, when the network management state of the second gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module of the second gateway switches to the full power consumption operation state.
[0117] For example, taking uplink wake-up as an example, the second gateway is configured to: in response to the second gateway switching from bus sleep state to repeat message state, control the optical signal communication module to switch from low power operation state to full power operation state.
[0118] Thus, this application controls the optical signal communication module within the gateway to switch its power consumption state when the gateway's operating state changes, so that when the gateway is in operation, the optical signal communication module synchronously enters the normal power consumption operating state, ensuring normal communication.
[0119] Specifically, during the uplink wake-up process, the electrical signal communication module in the second gateway is configured to send a local wake-up indication (such as LWI) message to the optical signal communication module when the second gateway switches from the bus sleep state to the repeat message state; the optical signal communication module in the second gateway is configured to switch from the low-power operation state to the full-power operation state when it receives the local wake-up indication message.
[0120] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module in the ONU is configured to: upon receiving a local wake-up indication message, switch from a low-power sleep state to an active hold state and send a second message to the OLT; if no wake-up request is received within a first preset time period, switch from the active hold state to an active idle state; the optical signal communication module in the OLT is configured to: upon receiving the second message, switch from a low-power sleep state to a forced wake-up state.
[0121] The second message is used to wake up the optical signal communication module in the OLT.
[0122] In some embodiments, the first preset time period is a manually set time period that can be flexibly adjusted according to the actual scenario. For example, the first preset time period can be 1 millisecond or 3 milliseconds.
[0123] For example, combined Figure 2 ,like Figure 4 As shown, taking the first gateway as the OLT, the second gateway as the ONU, and the first preset time period as 1 millisecond as an example, when the ONU's network management state transitions from bus sleep state to repeating message state, the electrical signal communication module in the ONU sends LWI information to the optical signal communication module. At this time, the optical signal communication module in the ONU responds to the LWI information, transitioning from low-power sleep state to active hold state, and simultaneously sends a second message (such as a wake-up request message) to the OLT. If the optical signal communication module in the ONU does not receive a wake-up request within 1 millisecond, it switches from active hold state to active idle state. After receiving the wake-up request message, the optical signal communication module in the OLT responds to the wake-up request message, transitioning from low-power sleep state to alert sleep state, and then from alert sleep state to forced wake-up state.
[0124] Thus, the vehicle communication system provided in this application can synchronously send a power consumption state switching command to the master OLT gateway after the optical signal communication module of the slave ONU gateway switches to the normal power consumption state, so that the master and slave gateways can synchronously enter the normal power consumption state, thereby ensuring the normal communication of the entire vehicle communication network.
[0125] Furthermore, the first gateway is also configured to control the state transition of the network management state of the first gateway based on the state transition of the power consumption operation state of the optical signal communication module in the first gateway.
[0126] In some embodiments, the first gateway is configured to switch from the bus sleep state to the repeat message state when the first gateway is currently in a bus sleep state and the optical signal communication module in the first gateway switches from a low-power operation state to a full-power operation state.
[0127] Specifically, the optical signal communication module of the first gateway is configured to send a local wake-up indication message to the electrical signal communication module of the first gateway when the first gateway is currently in a bus sleep state and the optical signal communication module in the first gateway switches from a low-power operation state to a full-power operation state; the electrical signal communication module of the first gateway is configured to switch from a bus sleep state to a repeat message state upon receiving the local wake-up indication message.
[0128] For example, such as Figure 4 As shown, taking the first gateway as the OLT and the second gateway as the ONU as an example, when the OLT is in bus sleep mode, if the OLT's optical signal communication module jumps from low-power sleep mode to forced wake-up mode, it will send a local wake-up instruction to the OLT's electrical signal communication module. The OLT's electrical signal communication module will respond to the LWI and control the OLT's network management state to jump from bus sleep mode to repeat message mode.
[0129] Thus, the gateway in this application can also adjust the network management status synchronously according to the power consumption status of its own optical signal communication module, ensuring that the power consumption of each component in the gateway is synchronized.
[0130] Optionally, when the network management state of the second gateway switches to the sleep preparation state, the power consumption operation state of the optical signal communication module in the second gateway switches to the low power consumption operation state.
[0131] For example, taking uplink sleep mode as an example, the second gateway is configured to: in response to the second gateway switching from normal operation state to sleep preparation state, control the optical signal communication module to switch from full power operation state to low power operation state.
[0132] Thus, this application controls the optical signal communication module within the gateway to switch power consumption states when the gateway's operating state changes, so that when the gateway is in sleep mode, the optical signal communication module synchronously enters low-power operation, thereby reducing the power consumption of the gateway's optical signal communication module.
[0133] Specifically, the electrical signal communication module of the second gateway is configured to send LSI information to the optical signal communication module of the second gateway when the second gateway switches from normal operation state to sleep preparation state; the optical signal communication module of the second gateway is configured to switch from full power operation state to low power operation state upon receiving LSI information.
[0134] In some embodiments, when the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the ONU is configured to: upon receiving LSI information, switch from an active idle state to a sensing state and send a fourth message to the OLT; if no wake-up request is received within a second preset time period, switch from the sensing state to a low-power sleep state; the optical signal communication module of the OLT is configured to: upon receiving the fourth message, switch from a free wake-up state to a low-power sleep state.
[0135] The fourth message is used to request the OLT's optical signal communication module to go into sleep mode.
[0136] In some embodiments, the second preset time period is a manually set time period that can be flexibly adjusted according to the actual scenario. For example, the second preset time period can be 2 milliseconds or 4 milliseconds.
[0137] For example, such as Figure 4 As shown, taking the first gateway as the OLT, the second gateway as the ONU, and the second preset time period as 2 milliseconds as an example, when the ONU's network management state transitions from normal operation to sleep preparation state, the electrical signal communication module in the ONU sends LSI information to the optical signal communication module. At this time, the optical signal communication module in the ONU responds to the LSI information, transitions from active idle state to sensing state, and simultaneously sends a fourth message (such as a sleep request message) to the OLT. If the optical signal communication module in the ONU does not receive a wake-up request within 2 milliseconds, it transitions from sensing state to low-power sleep state. After receiving the sleep request message, the optical signal communication module in the OLT responds to the sleep request message and transitions from free wake-up state to low-power sleep state.
[0138] Thus, the vehicle communication system provided in this application can synchronously send a power state switching command to the master OLT gateway after the optical signal communication module of the slave ONU gateway switches to a low power state, so that the master and slave gateways can synchronously enter a low power state, thereby reducing the power consumption of the entire vehicle communication network.
[0139] Furthermore, the first gateway is also configured to control the network management status of the first gateway based on the power consumption and operating status of the optical signal communication module in the first gateway.
[0140] In some embodiments, the first gateway is configured to switch from the normal operating state to a sleep-ready state when the first gateway is currently in a normal operating state and the optical signal communication module in the first gateway switches from a full-power operating state to a low-power operating state.
[0141] Specifically, the optical signal communication module of the first gateway is configured to send local sleep indication information to the electrical signal communication module of the first gateway when the first gateway is currently in normal operation and the optical signal communication module in the first gateway switches from full power operation to low power operation; the electrical signal communication module of the first gateway is configured to switch from normal operation to sleep preparation state upon receiving the local sleep indication information.
[0142] For example, such as Figure 4 As shown, taking the OLT as the first gateway and the ONU as the second gateway as an example, when the OLT is in normal operation, if the OLT's optical signal communication module switches from forced wake-up state to free wake-up state, it will send LSI information to the OLT's electrical signal communication module. The OLT's electrical signal communication module will respond to the LSI information and control the OLT's network management state to switch from normal operation state to ready sleep state.
[0143] Thus, the gateway in this application can also adjust the network management status synchronously according to the power consumption status of its own optical signal communication module, ensuring that the power consumption of each component in the gateway is synchronized.
[0144] like Figure 5 The diagram shown is a wake-up logic diagram of an in-vehicle communication system provided in an embodiment of this application. The in-vehicle communication system 100 includes a first gateway 110, a second gateway 120, a first ECU 131, a second ECU 132, a third ECU 133, a fourth ECU 141, and a fifth ECU 142.
[0145] In some embodiments, the first gateway 110 and the second gateway 120 communicate via optical fiber, the first gateway 110 communicates with the first ECU 131 and the third ECU 133 via CAN FD, the first ECU 131 and the second ECU 132 communicate via CAN FD, the second gateway 120 communicates with the fourth ECU 141 via CAN FD, and the second gateway 120 communicates with the fifth ECU 142 via Ethernet.
[0146] In some embodiments, when communication transmission is required, the ECU511 can wake up all nodes in the vehicle communication system 500 through network management messages to achieve normal communication.
[0147] In one example, combining Figure 3 and Figure 5When the entire vehicle communication system 100 is in sleep mode, when the first ECU 131 needs to communicate, it can send a network management message carrying a wake-up request via CAN FD. Upon receiving the network management message, the second ECU 132 transitions from bus sleep mode to repeat message mode. Upon receiving the network management message, the first gateway 110's network management state machine transitions from bus sleep mode to repeat message mode. The first gateway 110 then sends a network management message via CAN FD to wake up the third ECU 133. Simultaneously, the first gateway 110 triggers LWI, transitioning its power consumption operating state from low-power sleep mode to alert sleep mode. It also sends an optical signal to the second gateway 120 carrying a sleep permission disable message and sets FWI. Upon receiving the sleep permission disable message and FWI, the second gateway 120 transitions its power consumption operating state from low-power sleep mode to active hold mode and sends a wake-up request message to the first gateway 110. Simultaneously, the network management state in the second gateway 120 transitions from bus sleep mode to repeat message mode and sends a wake-up request via CAN FD. The FD and Ethernet send network management messages, and the fourth ECU141 and the fifth ECU142 are awakened after receiving the network management messages; after receiving the request to wake up the sleep message, the first gateway 110 changes its power consumption operation state from the alert sleep state to the forced wake-up state. At this time, all nodes on the network architecture of the entire vehicle communication system 100 have been awakened and can communicate normally.
[0148] Thus, when a node needs to communicate, this application wakes up other nodes in the vehicle communication network to ensure normal communication, and when no communication is needed, it controls the entire vehicle communication network to go into sleep mode to reduce the power consumption of the vehicle communication network.
[0149] This application also provides an electronic and electrical system, including the vehicle communication system described in the above embodiments.
[0150] This application also provides a vehicle including the above-described electronic and electrical system.
[0151] In the several embodiments provided in this application, it should be understood that the disclosed systems and vehicles can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.
[0152] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0153] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0154] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A vehicle-mounted communication system, characterized in that, include: A first gateway and a second gateway, with optical fiber communication between the first gateway and the second gateway; The first gateway is responsible for communicating with the electronic control unit in the first regional network based on electrical signals, and the second gateway is responsible for communicating with the electronic control unit in the second regional network based on electrical signals. Both the first gateway and the second gateway include an electrical signal communication module and an optical signal communication module. The first gateway is configured to: control the power consumption and operating status of the optical signal communication module in the first gateway based on the network management status of the first gateway; and / or, The second gateway is configured to control the power consumption and operating status of the optical signal communication module in the second gateway based on the network management status of the second gateway.
2. The vehicle-mounted communication system according to claim 1, characterized in that, The network management state includes at least one of the following: duplicate message state, normal operation state, ready to hibernate state, and bus hibernation state.
3. The vehicle-mounted communication system according to claim 2, characterized in that, The power consumption operating states include a low power consumption operating state and a full power consumption operating state, wherein the power consumption in the low power consumption operating state is less than the power consumption in the full power consumption operating state.
4. The vehicle-mounted communication system according to claim 3, characterized in that, When the optical signal communication module is an optical line terminal (OLT) optical signal communication module, the low-power operation state includes: low-power sleep state, and the full-power operation state includes: alert sleep state, forced wake-up state, and free wake-up state.
5. The vehicle-mounted communication system according to claim 3, characterized in that, When the optical signal communication module is an optical network unit (ONU) optical signal communication module, the low-power operation state includes a low-power sleep state, and the full-power operation state includes an active hold state, an active idle state, and a sensing state.
6. The vehicle-mounted communication system according to claim 1, characterized in that, When the network management state of the first gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module switches to the full power consumption operation state.
7. The vehicle-mounted communication system according to claim 6, characterized in that, The electrical signal communication module in the first gateway is configured to send local wake-up indication information to the optical signal communication module when the first gateway switches from bus sleep state to repeat message state. The optical signal communication module in the first gateway is configured to switch from the low-power operation state to the full-power operation state upon receiving the local wake-up indication information.
8. The vehicle-mounted communication system according to claim 7, characterized in that, When the first gateway is an Optical Line Terminal (OLT) and the second gateway is an Optical Network Unit (ONU), the optical signal communication module in the OLT is configured as follows: Upon receiving the local wake-up instruction information, the system transitions from a low-power sleep state to an alert sleep state and sends a first message to the ONU, the first message being used to wake up the optical signal communication module in the ONU. Upon receiving the second message, the system transitions from alert sleep state to forced wake-up state. The second message indicates that the optical signal communication module in the ONU has been woken up.
9. The vehicle-mounted communication system according to claim 8, characterized in that, The optical signal communication module in the ONU is configured as follows: Upon receiving the first message, the system transitions from a low-power sleep state to an active hold state and sends the second message to the OLT.
10. The vehicle-mounted communication system according to claim 1, characterized in that, When the network management state of the first gateway switches to the sleep preparation state, the power consumption operation state of the optical signal communication module switches to the low power consumption operation state.
11. The vehicle-mounted communication system according to claim 10, characterized in that, The electrical signal communication module of the first gateway is configured to send local sleep indication information to the optical signal communication module of the first gateway when the first gateway switches from normal operation state to sleep preparation state. The optical signal communication module of the first gateway is configured to switch from the full power operation state to the low power operation state upon receiving the local sleep indication information.
12. The vehicle-mounted communication system according to claim 11, characterized in that, When the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the OLT is configured as follows: Upon receiving the local sleep indication information, the system transitions from a forced wake-up state to a free wake-up state and sends a third message to the ONU, which requests the ONU's optical signal communication module to go into sleep mode. Upon receiving a fourth message, the system transitions from the free wake-up state to a low-power sleep state, whereby the fourth message indicates that the ONU's optical signal communication module is in sleep mode.
13. The vehicle-mounted communication system according to claim 12, characterized in that, The optical signal communication module of the ONU is configured as follows: Upon receiving the third message, the system transitions from the active state to the sensing state and sends the fourth message to the OLT.
14. The vehicle-mounted communication system according to claim 1, characterized in that, The first gateway is also configured to control the network management status of the first gateway based on the power consumption and operating status of the optical signal communication module in the first gateway.
15. The vehicle-mounted communication system according to claim 14, characterized in that, The first gateway is configured to switch from the bus sleep state to the repeat message state when the first gateway is currently in a bus sleep state and the optical signal communication module in the first gateway switches from a low-power operation state to a full-power operation state.
16. The vehicle-mounted communication system according to claim 15, characterized in that, The optical signal communication module of the first gateway is configured to send a local wake-up indication message to the electrical signal communication module of the first gateway when the first gateway is currently in bus sleep state and the optical signal communication module in the first gateway switches from the low power operation state to the full power operation state. The electrical signal communication module of the first gateway is configured to switch from the bus sleep state to the repeat message state upon receiving the local wake-up indication information.
17. The vehicle-mounted communication system according to claim 1, characterized in that, When the network management state of the second gateway switches to the duplicate message state, the power consumption operation state of the optical signal communication module switches to the full power consumption operation state.
18. The vehicle-mounted communication system according to claim 17, characterized in that, The electrical signal communication module in the second gateway is configured to send a local wake-up indication message to the optical signal communication module when the second gateway switches from a bus sleep state to a repeat message state. The optical signal communication module in the second gateway is configured to switch from the low-power operation state to the full-power operation state upon receiving the local wake-up indication information.
19. The vehicle-mounted communication system according to claim 18, characterized in that, When the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module in the ONU is configured as follows: Upon receiving the local wake-up indication information, the system transitions from a low-power sleep state to an active hold state and sends a second message to the OLT, the second message being used to wake up the optical signal communication module in the OLT. If no wake-up request is received within the first preset time period, the system switches from the active hold state to the active idle state.
20. The vehicle-mounted communication system according to claim 19, characterized in that, The optical signal communication module in the OLT is configured as follows: Upon receiving the second message, the system transitions from a low-power sleep state to a forced wake-up state.
21. The vehicle-mounted communication system according to claim 1, characterized in that, When the network management state of the second gateway switches to the sleep preparation state, the power consumption operation state of the optical signal communication module switches to the low power consumption operation state.
22. The vehicle-mounted communication system according to claim 21, characterized in that, The electrical signal communication module of the second gateway is configured to send local sleep indication information to the optical signal communication module of the second gateway when the second gateway switches from the normal operation state to the sleep preparation state. The optical signal communication module of the second gateway is configured to switch from the full power operation state to the low power operation state upon receiving the local sleep indication information.
23. The vehicle-mounted communication system according to claim 22, characterized in that, When the first gateway is an OLT and the second gateway is an ONU, the optical signal communication module of the ONU is configured as follows: Upon receiving the local sleep indication information, the system switches from the active idle state to the sensing state and sends a fourth message to the OLT, which is used to request the optical signal communication module of the OLT to go into sleep mode. If no wake-up request is received within the second preset time period, the system transitions from the sensing state to a low-power sleep state.
24. The vehicle-mounted communication system according to claim 23, characterized in that, The optical signal communication module of the OLT is configured as follows: Upon receiving the fourth message, the system transitions from the free wake-up state to a low-power sleep state.
25. The vehicle-mounted communication system according to claim 1, characterized in that, The second gateway is also configured to control the network management status of the second gateway based on the power consumption and operating status of the optical signal communication module in the second gateway.
26. The vehicle-mounted communication system according to claim 25, characterized in that, The second gateway is configured to switch from the bus sleep state to the repeat message state when the second gateway is currently in a bus sleep state and the optical signal communication module in the second gateway switches from a low-power operation state to a full-power operation state.
27. The vehicle-mounted communication system according to claim 26, characterized in that, The optical signal communication module of the second gateway is configured to send a local wake-up indication message to the electrical signal communication module of the second gateway when the second gateway is currently in the bus sleep state and the optical signal communication module in the second gateway switches from the low power operation state to the full power operation state. The electrical signal communication module of the second gateway is configured to switch from the bus sleep state to the repeat message state upon receiving the local wake-up indication information.
28. An electronic and electrical system, characterized in that, Including the vehicle communication system as described in any one of claims 1 to 27.
29. A vehicle, characterized in that, Including the electronic and electrical system as described in claim 28 above.