CN115514695A - Vehicle-mounted Ethernet congestion self-adaptive data forwarding method and system - Google Patents
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
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- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention discloses a congestion self-adaptive data forwarding method and system for a vehicle-mounted Ethernet, which comprises a sensing node, a switching node and a main control node, wherein the sensing node is used for sensing the congestion self-adaptive data forwarding of the vehicle-mounted Ethernet; the switching node detects the link connectivity between the nodes based on the OAM message, selects a forwarding physical channel according to a pre-configured congestion adaptive data forwarding strategy, and has a congestion adaptive data forwarding function; and selecting an optimal path through the link connectivity detection of the switching node among each physical channel and a pre-configured congestion self-adaptive data forwarding strategy to realize the congestion self-adaptive data forwarding among the sensing node, the switching node and the main control node. On the basis of the ITU-T G.8013/Y.1731OAM standard, the invention realizes safe and reliable congestion self-adaptive data forwarding of the vehicle-mounted Ethernet, avoids data loss or communication interruption caused by the failure or congestion of a link in the vehicle-mounted Ethernet and effectively ensures the reliability and safety of the vehicle-mounted Ethernet.
Description
Technical Field
The invention belongs to the technical field of automatic driving, and particularly relates to a vehicle-mounted Ethernet congestion self-adaptive data forwarding method and system.
Background
An Operation, maintenance and management protocol (OAM) is a standard protocol for monitoring network failures, and is mainly used to solve the common link problem in ethernet access. By enabling ethernet OAM functionality on two point-to-point connected devices, the link status between the two devices may be monitored. Based on the fault detection function specified by the ITU-T G.8013/Y.1731OAM protocol, the connectivity of the link is detected by sending a detection message, and an alarm is given in time when the link fails.
For the automatic driving vehicle-mounted network, the alarm of the network itself is not significant, and the network is maintained by a background maintenance person after the alarm is sent out, so that the problem that no one takes over the network after the network congestion or the network fault occurs in the field of the vehicle-mounted Ethernet can not be solved by the simple alarm.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a vehicle-mounted Ethernet congestion self-adaptive data forwarding method and system.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a vehicle-mounted Ethernet congestion self-adaptive data forwarding system comprises a sensing node, a switching node and a main control node;
the sensing node collects sensing information and has the functions of sending data messages and controlling message processing; the switching node detects the link connectivity of physical channels among the nodes based on the OAM message, selects a forwarding physical channel according to a pre-configured congestion adaptive data forwarding strategy, and has a congestion adaptive data forwarding function of the vehicle-mounted Ethernet; the master control node has the functions of processing the data message and controlling the sending of the message;
and selecting an optimal path through the link connectivity detection of the switching node among each physical channel and a pre-configured congestion self-adaptive data forwarding strategy to realize the congestion self-adaptive data forwarding among the sensing node, the switching node and the main control node.
Furthermore, a plurality of physical channels are arranged in the logic channel between the switching nodes, the OAM messages are periodically sent between the physical channels based on the ITU-T G.8013/Y.1731OAM protocol between the switching nodes, and the link connectivity of each physical channel is detected according to the message information.
Further, link connectivity indexes including bandwidth, time delay and frame loss rate are detected according to the OAM message; and selecting the most reliable physical channel for transmission by depending on a pre-configured congestion self-adaptive data forwarding strategy comprising bandwidth priority, frame loss rate sequencing and time delay sequencing to realize the communication between the switching nodes.
Furthermore, the sensing node collects sensing information, sends a sensing data message through a logic channel of the switching node, and receives and processes a control message; the main control unit receives and processes the sensing data message through the logic channel of the switching node and sends a control message.
A vehicular Ethernet congestion self-adaptive data forwarding method comprises the following steps:
firstly, carrying out pre-configuration on a switching node of a vehicle-mounted Ethernet;
secondly, transmitting OAM messages between each physical channel of the switching node, detecting link connectivity indexes of each physical channel, and calculating bandwidth, time delay and frame loss rate;
thirdly, the switching node elects an optimal forwarding path according to the connectivity index of each physical channel calculated in the first step according to a pre-configured congestion self-adaptive data forwarding strategy, such as bandwidth priority, frame loss rate sequencing and time delay sequencing;
fourthly, the sensing nodes collect sensing information, send data messages and forward the sensing information according to the optimal path selected by the switching node vehicle-mounted Ethernet congestion self-adaptive strategy;
fifthly, the main control node receives the sensing data message by means of the optimal path selected by the switching node vehicle-mounted Ethernet congestion adaptive strategy, and carries out sensing information analysis; the main control node sends a control message, the control message is forwarded by relying on an optimal path selected by a vehicle-mounted Ethernet congestion self-adaptive strategy of the switching node, and the sensing node receives the control message.
Further, the switching node of the vehicle-mounted Ethernet is configured in advance, and the switching node comprises a logic channel member, a plurality of physical channels are set for the logic channel of the switching node, and the logic channel member of the switching node is connected with the physical channels; the method comprises a congestion self-adaptive data forwarding strategy, such as bandwidth priority, frame loss rate sequencing and time delay sequencing.
Furthermore, an OAM link connectivity detection message is sent between each physical channel of the switching nodes based on an ITU-T G.8013/Y.1731OAM protocol, and the ITU-T G.8013/Y.1731OAM protocol specifies a fault detection function.
Compared with the prior art, the method has the advantages that the fault detection function is specified based on the ITU-T G.8013/Y.1731OAM protocol, the connectivity of each physical channel between the switching nodes is detected, the congestion self-adaptive data forwarding of the vehicle-mounted Ethernet is realized by performing the preset strategy configuration on the switching nodes, the data loss or communication interruption caused by the fault or congestion of a link in the vehicle-mounted Ethernet is avoided, the data communication between the sensing node and the main control node is ensured, and the reliability of the vehicle-mounted Ethernet is improved.
On the basis of ITU-T G.8013/Y.1731OAM standard, the invention realizes safe and reliable congestion self-adaptive data forwarding of the vehicle-mounted Ethernet and effectively ensures the reliability and safety of the vehicle-mounted Ethernet.
Drawings
Fig. 1 is a schematic diagram of an in-vehicle ethernet congestion adaptive data forwarding system of the present invention;
FIG. 2 is a schematic diagram of logical link and physical link relationships of an in-vehicle Ethernet congestion adaptive data forwarding system;
fig. 3 is a flow timing diagram of a vehicular ethernet congestion adaptive data forwarding method.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1, the vehicular ethernet congestion adaptive data forwarding system according to the present invention includes a sensing node, a switching node 1, a switching node 2, and a master node. The sensing node collects sensing information and has the functions of sending data messages and controlling message processing; the switching node is used for deploying a vehicle-mounted Ethernet congestion adaptive data forwarding strategy, detecting the link connectivity of a physical channel, selecting a forwarding physical channel according to the pre-configured congestion adaptive data forwarding strategy and having a vehicle-mounted Ethernet congestion adaptive data forwarding function; and the main control node has the functions of processing the data message and controlling the sending of the message. And selecting an optimal path through the link connectivity detection of the switching node among each physical channel and a pre-configured congestion self-adaptive data forwarding strategy to realize the congestion self-adaptive data forwarding among the sensing node, the switching node and the main control node.
As shown in FIG. 2, a logical channel between switching nodes sets up multiple physical channels, including physical channels P1-P1, physical channels P2-P2, and physical channels P3-P3. Based on ITU-T G.8013/Y.1731OAM protocol, the switching nodes send OAM messages among the physical channels P1-P1, P2-P2 and P3-P3 periodically, and detect the link connectivity of each physical channel according to the information in the messages, thereby realizing the reliability monitoring of each physical channel among the switching nodes.
The switching nodes deploy a vehicular Ethernet congestion adaptive data forwarding strategy, link connectivity indexes are detected according to OAM messages, the most reliable physical channels are elected for transmission by means of the preconfigured congestion adaptive data forwarding strategy, including bandwidth priority, frame loss rate sequencing, time delay sequencing and the like, communication among the switching nodes is achieved, normal communication of the logic channels is guaranteed, and therefore data transmission of the whole vehicular Ethernet is guaranteed.
The sensing node collects sensing information, sends a sensing data message through a logic channel of the switching node, and receives and processes a control message; the main control unit receives and processes the sensing data message through the logic channel of the switching node and sends a control message.
As shown in fig. 3, a method for forwarding congestion adaptive data of a vehicle-mounted ethernet network detects link connectivity of a physical channel 1, a physical channel 2 and a physical channel 3 of an exchange node based on ITU-T g.8013/y.1731oam protocol, and by calculating connectivity of each physical channel, selects a physical channel with highest reliability according to a preconfigured ethernet congestion adaptive data forwarding policy, and implements congestion adaptive data forwarding between exchange nodes. The method specifically comprises the following steps:
firstly, configuring a switching node 1 and a switching node 2 of a vehicle-mounted Ethernet in advance;
secondly, based on the fault detection function specified by ITU-T G.8013/Y.1731OAM protocol, the switching node sends an OAM link connectivity detection message between each physical channel, so that the real-time monitoring of the connectivity of each physical channel is realized, and the bandwidth, the time delay, the frame loss rate and the like are calculated;
thirdly, the switching node elects an optimal forwarding path according to the connectivity index of each physical channel calculated in the first step and according to a pre-configured congestion self-adaptive data forwarding strategy, such as bandwidth priority, frame loss rate sequencing, time delay sequencing and the like;
fourthly, the sensing nodes collect sensing information, send data messages and forward the sensing information according to the optimal path selected by the switching node vehicle-mounted Ethernet congestion self-adaptive strategy;
fifthly, the main control node receives the sensing data message by means of the optimal path selected by the switching node vehicle-mounted Ethernet congestion self-adaptive strategy, and the sensing information is analyzed;
the main control node sends a control message, the control message is forwarded by relying on an optimal path selected by a vehicle-mounted Ethernet congestion self-adaptive strategy of the switching node, and the sensing node receives the control message.
Pre-configuring switching nodes of the vehicle-mounted Ethernet, wherein the switching nodes comprise logical channel members such as P1, P2 and P3; and logical channel members of the connected switching nodes, such as P1, P2, and P3; and (3) congestion self-adaption selection strategies such as bandwidth priority, frame loss rate sequencing, time delay sequencing and the like.
The switching node periodically sends OAM link connectivity detection messages among the physical channels P1-P1, the physical channels P2-P2 and the physical channels P3-P3 according to the preset configuration and based on an ITU-T G.8013/Y.1731OAM protocol, thereby realizing the real-time monitoring of the connectivity of each physical channel and calculating the connectivity index of each physical channel.
Compared with the prior art, the method has the advantages that the fault detection function is specified based on the ITU-T G.8013/Y.1731OAM protocol, the connectivity of each physical channel between the switching nodes is detected, the congestion self-adaptive data forwarding of the vehicle-mounted Ethernet is realized by performing the preset strategy configuration on the switching nodes, the data loss or communication interruption caused by the fault or congestion of a link in the vehicle-mounted Ethernet is avoided, the data communication between the sensing node and the main control node is ensured, and the reliability of the vehicle-mounted Ethernet is improved.
On the basis of ITU-T G.8013/Y.1731OAM standard, the invention realizes safe and reliable congestion self-adaptive data forwarding of the vehicle-mounted Ethernet and effectively ensures the reliability and safety of the vehicle-mounted Ethernet.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for the purpose of limiting the scope of the present invention, and on the contrary, any modifications or modifications based on the spirit of the present invention should fall within the scope of the present invention.
Claims (7)
1. A vehicle-mounted Ethernet congestion self-adaptive data forwarding system is characterized by comprising a sensing node, a switching node and a main control node;
the sensing node collects sensing information and has the functions of sending data messages and controlling message processing; the switching node detects the link connectivity of physical channels among the nodes based on the OAM message, selects a forwarding physical channel according to a pre-configured congestion adaptive data forwarding strategy, and has a congestion adaptive data forwarding function of the vehicle-mounted Ethernet; the master control node has the functions of processing the data message and controlling the sending of the message;
and selecting an optimal path through the link connectivity detection of the switching node among each physical channel and a pre-configured congestion self-adaptive data forwarding strategy to realize the congestion self-adaptive data forwarding among the sensing node, the switching node and the main control node.
2. The vehicular ethernet congestion adaptive data forwarding system according to claim 1, wherein a plurality of physical channels are set for logical channels between switching nodes, and an ITU-T g.8013/y.1731OAM protocol is based between switching nodes, and OAM messages are periodically sent between physical channels, and link connectivity of each physical channel is detected according to message information.
3. The vehicular ethernet congestion adaptive data forwarding system according to claim 1, wherein link connectivity indicators including bandwidth, delay and frame loss rate are detected from the OAM message; and selecting the most reliable physical channel for transmission by depending on a pre-configured congestion self-adaptive data forwarding strategy comprising bandwidth priority, frame loss rate sequencing and time delay sequencing to realize the communication between the switching nodes.
4. The vehicular ethernet congestion adaptive data forwarding system according to claim 1, wherein the sensing node collects sensing information, sends a sensing data packet through a logical channel of the switching node, and receives a control packet for processing; the main control unit receives and processes the sensing data message through the logic channel of the switching node, and sends a control message.
5. A vehicular Ethernet congestion self-adaptive data forwarding method is characterized by comprising the following steps:
firstly, carrying out pre-configuration on a switching node of a vehicle-mounted Ethernet;
secondly, transmitting OAM messages between each physical channel of the switching node, detecting link connectivity indexes of each physical channel, and calculating bandwidth, time delay and frame loss rate;
thirdly, the exchange node elects an optimal forwarding path according to the connectivity index of each physical channel calculated in the first step and according to the pre-configured congestion self-adaptive data forwarding strategy, such as bandwidth priority, frame loss rate sequencing and time delay sequencing;
fourthly, the sensing nodes collect sensing information, send data messages and forward the data messages by relying on the optimal path selected by the vehicle-mounted Ethernet congestion self-adaptive strategy of the switching nodes;
fifthly, the main control node receives the sensing data message by means of the optimal path selected by the switching node vehicle-mounted Ethernet congestion self-adaptive strategy, and the sensing information is analyzed; the main control node sends a control message, the control message is forwarded by relying on an optimal path selected by a vehicle-mounted Ethernet congestion self-adaptive strategy of the switching node, and the sensing node receives the control message.
6. The vehicular ethernet congestion adaptive data forwarding method according to claim 5, wherein the switching node of the vehicular ethernet is configured in advance, and includes a logical channel member, and a plurality of physical channels and logical channel members of the connected switching nodes are set for the logical channel of the switching node; the method comprises a congestion self-adaptive data forwarding strategy, such as bandwidth priority, frame loss rate sequencing and time delay sequencing.
7. The vehicular ethernet congestion adaptive data forwarding method according to claim 5, wherein an OAM link connectivity probe message is sent between each physical channel of the switching node based on an ITU-T g.8013/y.1731OAM protocol, which specifies a failure detection function.
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Application publication date: 20221223 |