CN105897453A - Method for diagnosing network and apparatus for the same - Google Patents
Method for diagnosing network and apparatus for the same Download PDFInfo
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- CN105897453A CN105897453A CN201510530005.XA CN201510530005A CN105897453A CN 105897453 A CN105897453 A CN 105897453A CN 201510530005 A CN201510530005 A CN 201510530005A CN 105897453 A CN105897453 A CN 105897453A
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- message
- communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
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Abstract
A network diagnostic method and network diagnostic apparatus are disclosed. An operating method of a first communication node includes checking whether each communication node connected to the first communication node is in a fault condition based on a first message transmitted between the communication nodes and a first response message which is a response to the first message, and generating a diagnostic response message containing identification information of the communication node that is in a fault condition or normal state. Thus, a network performance can be improved.
Description
Technical field
The example embodiment of the present invention relate in general to network diagnosis technology and relate more particularly to a kind of method and
Device, the channel (or port) that the state and communication node for diagnosing the communication node of network consisting is connected
State.
Background technology
Fast digitizing along with vehicle part, the quantity and the type that are installed on the electronic equipment of vehicle significantly increase
Add.Electronic equipment can be widely used for power assembly control system, body control system, chassis control system,
In-vehicle networking, multimedia system etc..Power assembly control system can represent Engine Control System, automatically transmits
Control system etc..Body control system can represent body electronics apparatus control system, portable unit control system,
Bulb control system etc..Chassis control system can represent transfer control system, braking control system, hangs
Frame control system etc..In-vehicle networking can represent controller zone network (CAN), network based on FlexRay,
The network etc. of media guidance system transfers (MOST).Multimedia system can represent guider system, remote
Journey information processing system, information entertainment etc..
The electronic equipment of system and each system of composition is connected by In-vehicle networking, and it is for supporting electronic equipment
Function institute is required.CAN can support up to 1Mbps transfer rate and can support collision message automatically the most again
Transmission, error-detecting etc. based on cyclic redundancy interface (CRC).Network based on FlexRay can be supported
It is up to the transfer rate of 10Mbps and the Simultaneous Transmission of Data by two channels, synchronous data transmission can be supported
Deng.Network based on MOST is for the multimedia communication network of high-quality, and it can support up to 150Mbps
Transfer rate.
Meanwhile, the teleprocessing system of vehicle, information entertainment and enhanced nuclear detonation safety need height to pass
Defeated speed and the system expandability.But, CAN, network based on FlexRay etc., possible insufficient
Hold demand.Network based on MOST can be supported than CAN and the higher transmission of network based on FlexRay
Speed.But, it spends bigger cost to apply network based on MOST to all In-vehicle networkings.By
In this restriction, network based on Ethernet can be considered as In-vehicle networking.Network based on Ethernet can pass through
A pair coil is supported two-way communication and can support the transfer rate of up to 10Gbps.
In-vehicle networking based on Ethernet can include a plurality of communication node.Accordingly, it would be desirable to a kind of method, use
Connected in the state (that is, normal condition or malfunction) and communication node diagnosing each communication node
The state of channel (or port).
Summary of the invention
Therefore, the example embodiment of the present invention is provided to substantially to avoid due to the restriction of correlation technique and lacks
One or more problems of point.
The example embodiment of the present invention provides a method that, for diagnosing the shape of the communication node of network consisting
The state of the channel (or port) that state and this communication node are connected.
The example embodiment of the present invention additionally provides a kind of device, for diagnosing the communication node of network consisting
The state of the channel (or port) that state and this communication node are connected.
In some example embodiment, the operational approach of the first communication node includes: based between communication node
The first message of sending and in response to the first response message of described first message, checks and communicates with described first
Whether the communication node that node connects each be in malfunction；And generate diagnostic response message, institute
State diagnostic response message and include being in the identification information of the communication node of malfunction or normal condition.
Here, the first message can be network management (NM) message.
Here, it is not received in time predefined section when the first response message in response to described first message
Time, the first communication node determines that the communication node that therefrom will send the first response message is in malfunction.
Here, the first communication node is switch or bridge, and and described first communication node connection communication node
In each for terminal node.
Here, this identification information can be Internet protocol (IP) address, and port numbers and media interviews control (MAC)
At least one of address.
Here, when receiving diagnosis request message from OBD (OBD) equipment, described diagnostic response
Message is generated.
Here, the first message, the first response message, this diagnosis request message and diagnostic response message every
One may be based on the message that Ethernet protocol generates.
Additionally, this operational approach also includes sending diagnostic response message to OBD equipment.
Here, this diagnostic response message can send in a broadcast manner.
In other example embodiment, the operational approach of the first communication node includes: send the first message to and the
At least one communication node that one communication node connects；Disappear based on the first response in response to described first message
The reception state of breath checks whether at least one communication node connected with the first communication node is in fault shape
State；And generating diagnostic response message, described diagnostic response message includes being in malfunction or normal condition
The identification information of communication node.
Here, it is not received in time predefined section when the first response message in response to described first message
Time, the first communication node determines that the communication node that therefrom will send the first response message is in malfunction.
Here, the first communication node can be switch or bridge, and at least one connected with the first communication node
Communication node is terminal node.
Here, this identification information can be IP address, at least one of port numbers and MAC Address.
Here, when OBD (OBD) equipment receives diagnosis request message, this diagnostic response message is given birth to
Become.
Here, the first message, the first response message, this diagnosis request message is every with this diagnostic response message
One may be based on the message that Ethernet protocol generates.
Additionally, this operational approach can farther include to send this diagnostic response message to OBD equipment.
In another other example embodiment, the operational approach of onboard diagnostic device includes: sends diagnosis request and disappears
Breath is to the first communication node；And receiving diagnostic response message from the first communication node, described diagnostic response disappears
Breath include with first communication node connect at least one communication node in be in malfunction or normal condition
The identification information of communication node.
Here, the first communication node is switch or bridge, and at least one connected with the first communication node is led to
Letter node is terminal node.
Here, each of diagnosis request message and diagnostic response message may be based on what Ethernet protocol generated
Message.
Here, this identification information can be IP address, at least one of port numbers and MAC Address.
Accompanying drawing explanation
The example embodiment of the present invention is by by describing the example embodiment of the present invention in detail and becoming with reference to accompanying drawing
Must become apparent from, wherein:
Fig. 1 is block diagram, it is shown that according to the In-vehicle networking topology of an embodiment；
Fig. 2 is block diagram, it is shown that according to the communication node of the composition In-vehicle networking of an embodiment；
Fig. 3 is block diagram, for describing the method according to an embodiment, is used for utilizing OBD (OBD)
Device Diagnostic In-vehicle networking；
Fig. 4 is block diagram, for describing the method according to another embodiment, is used for utilizing OBD device Diagnostic car
Contained network network；
Fig. 5 is sequence chart, it is shown that network diagnosis method according to embodiments of the present invention；
Fig. 6 is sequence chart, it is shown that network diagnosis method according to another embodiment of the present invention；And
Fig. 7 is block diagram, it is shown that for the example of the message of In-vehicle networking based on Ethernet.
Detailed description of the invention
Owing to the present invention can revise and have some exemplary embodiments in a variety of forms, particular exemplary is real
Execute example to illustrate at accompanying drawing and be described in detail in detailed description.It will be appreciated, however, that it is not
It is intended to limit the present invention to specific embodiment, on the contrary, it is intended to cover be in present invention spirit and model
Enclose interior all modifications and option.
Relational term such as the first, the second etc. can be used for describing multiple element, but this element should not limited by item
System.This is only used for distinguishing an element and another element.Such as, the first assembly can be named second group
Part is without departing from the scope of the invention, and the second assembly also can the most named first assembly.Term "and/or"
Represent any one or a plurality of relevant and combination of described item.
" it is coupled in " or during " being connected to " another assembly when mentioning specific components, it should be understood that specific components is direct
" it is coupled in " or " being connected to " other assembly or further, assembly can be located between it.On the contrary, when mentioning spy
Determine assembly " to be coupled directly to " or during " being directly connected in " another assembly, it will be appreciated that assembly not position further
Between it.
In the following description, technical term is merely to illustrate certain exemplary embodiments and the unrestricted disclosure.
Singulative " one (a) ", " one (an) ", and " this (the) " include plural reference.Unless
Context separately explicitly indicates that.In this manual, it will be appreciated that term " has ", " comprising ", " including "
Etc. being used for specifying stated features, integer, step, operation, element and/or the existence of assembly, but it is not excluded for one
Other features individual or multiple, integer, step, operation, element, assembly and/or the existence of a combination thereof or additional.
Unless otherwise defined, all terms used herein (including technology and scientific terminology) have and this
Bright those of ordinary skill in the field are generally understood that identical implication.Term, the most general and at word
Term in allusion quotation, it should be interpreted as having the implication being matched with this area context implication.In this description,
Unless clearly defined, term is the most too construed to formal sense.
Hereinafter, preferred embodiments of the invention will be described in detail with reference to the attached drawings.In described invention
In, for realizing comprehensive understanding of the present invention, in full text accompanying drawing describes same numbers refer to identical element and
Its repeated description will be omitted.
Fig. 1 is block diagram, it is shown that according to the In-vehicle networking topology of an embodiment.
With reference to Fig. 1, communication node can represent gateway, switchs (or bridge) or terminal node.Gateway 100 can be with
At least one switch 110,110-1,110-2,120 and 130 connect and configure to connect different networks.
Such as, gateway 100 can connect support controller zone network (CAN) (FlexRay, media guidance system
Transmission (MOST) or Local Interconnect Network (LIN)) agreement switch and support Ethernet protocol switch.
Switch 110,110-1,110-2,120 and 130 can with at least one terminal node 111,112,113,121,
122,123,131,132 and 133 connect.Switch 110,110-1,110-2,120 and 130 can interconnect
And control terminal node 111,112,113,121,122,123,131,132 and 133.
Terminal node 111,112,113,121,122,123,131,132 and 133 can represent electronics control
Unit processed (ECU), its polytype equipment controlling to be included in vehicle.
Such as, terminal node 111,112,113,121,122,123,131,132 and 133 can represent
The ECU of composition infotainment devices (such as, display apparatus, navigator and surroundings monitor apparatus).
The communication node (that is, gateway, switch, terminal node etc.) of composition In-vehicle networking may connect to star
Topology, bus topology, ring topology, tree topology, mesh topology etc..Additionally, composition In-vehicle networking is logical
Letter node can support CAN protocol, FlexRay agreement, MOST agreement, LIN agreement or Ethernet protocol.
Embodiments of the invention can be applicable to above-mentioned network topology.The network topology that embodiments of the invention are applied is not
It is limited to this and can configure in many ways.
Fig. 2 is block diagram, it is shown that according to the communication node of an embodiment composition In-vehicle networking.
With reference to Fig. 2, the communication node 200 of network consisting can include PHY layer block 210 and controller 220.
In this case, controller 220 can realize including media interviews control (MAC) layer.PHY layer block
210 can receive signal from another communication node or send a signal to another communication node.Controller 220 can control
PHY layer block 210 also performs several functions (such as, Infotainment function).PHY layer block 210 and control
Device 220 can be embodied as a SOC(system on a chip) (SoC) and can be embodied as individual chips.
PHY layer block 210 and controller 220 can pass through Media Independent Interface (MII) 230 and connect.MII230
Interface that IEEE802.3 defines can be represented and data can be included between PHY layer block 210 and controller 220
Interface and management interface.Simplify MII (RMII), gigabit MII (GMII), simplify GMII (RGMII),
Serial GMII (SGMII), one of 10GMII (XGMII) can be used for replacing MII230.Data-interface can
Including transmission channel and reception channel, each of which can have independent clock, data and control signal.Management
Interface can include a dual signal interface.One is the signal for clock, and another is the letter for data
Number.
PHY layer block 210 can include PHY layer interface unit 211, PHY layer processor 212 and PHY layer
Buffer 213.The configuration of PHY layer block 210 is not limited to this, and PHY layer block 210 can be in many ways
Configuration.The signal being received from controller 220 can be sent to PHY layer processor by PHY layer interface unit 211
212 and can will be received from PHY layer processor 212 signal send to controller 220.PHY layer processor
212 operations that can control PHY layer interface unit 211 and PHY layer buffer 213.PHY layer processor
The signal that 212 modulated signals to be sent or demodulation receive.PHY layer processor 212 can control PHY layer
Buffer 213 is with input or output signal.PHY layer buffer 213 can store reception signal and can basis
Signal from the request output storage of PHY layer processor 212.
Controller 220 can be monitored by MII230 and control PHY layer block 210.Controller 220 can include
Control unit interface unit 221, core 222, main memory 223 and quantum memory 224.The configuration of controller 220 is not
It is limited to this, and controller 220 can configure in many ways.Control unit interface unit 221 can be from PHY layer block
210 (that is, PHY layer interfaces 211) or upper strata (not shown) receive signal, send the signal received to core
222, and send be received from the signal of core 222 to PHY layer block 210 or upper strata.Core 222 can be further
Including for controlling control unit interface unit 221, main storage 223 and the separate storage of quantum memory 224
Device controls logic or integrated memory controls logic.Store control logic can realize being included in main memory 223
Maybe can realize with quantum memory 224 being included in core 222.
Host 223 and each of quantum memory 224 can store the signal processed by core 222 can be according to
Signal from the request output storage of core 222.Host 223 and can represent volatile memory (such as, at random
Access memorizer (RAM)), the data required for its temporary storage core 222.Quantum memory 224 can
Represent nonvolatile memory, wherein operating system code (such as, kernel and device driver) and use
Stored in the application code performing controller 220 function.Have high processing rate flash memory or for
Hard drive (HDD) or the compact disk read only memory (CD-ROM) of mass data storage can conducts
Nonvolatile memory.Typically, core 222 can include logic circuit, processes core including at least one.High
Level RISC machine (ARM) family's core or Anthem family core can be as cores 222.
A kind of method discussed further below, it is by belonging to the communication node of In-vehicle networking and corresponding counterparting communications
Node performs.Although method discussed further below (such as, signal sends or receives) is by the first communication node
Perform, but the second corresponding communication node can perform corresponding to the method by the first communication node execution
Method (such as, signal receives or sends).That is, when the operation of the first communication node is described, corresponding
Second communication node can perform the operation corresponding with the operation of the first communication node.On the contrary, when the second communication section
When the operation of point is described, the first communication node can perform the operation corresponding with the operation switched.
Fig. 3 is block diagram, for describing the method according to an embodiment, is used for utilizing OBD (OBD)
Device Diagnostic In-vehicle networking.
With reference to Fig. 3, terminal node 310,311,312,313 and 314 can form the car described with reference to Fig. 1
Contained network network also can support Ethernet protocol.Each of terminal node 310,311,312,313 and 314 can
Represent the communication node 200 described with reference to Fig. 2.Terminal node 310,311,312,313 and 314 can connect
It is connected to same or different switch.For diagnosis terminal node 310,311,312,313 and 314 each
State (that is, normal condition or malfunction) and terminal node 310,311,312,313 and 314 every
The state of one institute's connecting channel (or port), terminal node 310,311,312,313 and 314 can be with
OBD equipment 300 connects with one-to-one principle.That is, for state and the terminal node of diagnosis terminal node 310
The state of 310 channels connected, OBD equipment 300 can be physically connected to terminal joint with one-to-one principle
Point 310.
When OBD equipment 300 and terminal node 310 can connect with one-to-one principle, OBD equipment 300
Diagnosis request message can be generated and the diagnosis request message of generation can be sent to terminal node 310.From OBD
When equipment 300 receives diagnosis request message, terminal node 310 can generate diagnostic response message, and it is to examining
The response of disconnected request message, and the diagnostic response message of generation can be sent to OBD equipment 300.Alternatively,
When receiving diagnosis request message from OBD equipment 300, terminal node 310 can send in response to diagnosis request
Response (ACK) message of message is to OBD equipment 300.Receiving diagnostic response message, (or ACK disappears
Breath) time, it is the response to the diagnosis request message from terminal node 310, from diagnosis request message
Sending in the time predefined section of end time, OBD equipment 300 can determine that terminal node 310 and terminal joint
The channel that point 310 is connected is in normal condition.On the contrary, not receiving diagnostic response message, (or ACK disappears
Breath) time, it is from the terminal node 310 response to diagnosis request message, from diagnosis request message
Sending in the time period of end time, OBD equipment 300 can determine that terminal node 310 and terminal node 310
The channel connected is in malfunction.
OBD equipment 300 can perform said process by utilizing terminal node 311,312,313 and 314
Determine the state of residual terminal node 311,312,313 and 314.In-vehicle networking can include substantial amounts of terminal
Node.For determining the state of the terminal node of all composition In-vehicle networkings, OBD equipment 300 and terminal node
The process physically connected with one-to-one principle and message exchange between OBD equipment 300 and terminal node
Process can be implemented in the terminal node of all composition In-vehicle networkings.In this case, more time is spent
Determine the state of the terminal node of all composition In-vehicle networkings.
Fig. 4 is block diagram, for describing the method according to another embodiment, is used for utilizing OBD device Diagnostic car
Contained network network.
Reference Fig. 4, switch 410,420 and 430 and terminal node 411,412,413,421,422,
423,431,432 and 433 can form the In-vehicle networking described with reference to Fig. 1 and can support Ethernet protocol.Open
Pass 410,420 and 430 and terminal node 411,412,413,421,422,423,431,432 He
The communication node 200 that each represented reference Fig. 2 of 433 describes.First switch 410 can be with terminal node
411,412 and 413 via the connection of respective port and can be connected with second switch 420.Second switch 420 can
And can switch with the first switch 410 and the 3rd via the connection of respective port with terminal node 421,422 and 423
430 connect.3rd switch 430 can with terminal node 431,432 and 433 via respective port connect and can
It is connected with second switch 420.
OBD equipment 400 may connect to belong to a communication node (such as, the 3rd switch of In-vehicle networking
430), to diagnose the state of In-vehicle networking.That is, OBD equipment 400 can connect with one-to-one principle, is not
Only with a communication node, but with composition In-vehicle networking all communication nodes.In this case, logical
Crossing connected a communication node, OBD equipment 400 can obtain and lead to about a plurality of of composition In-vehicle networking
The diagnostic message of the state of the channel that the state of letter node and a plurality of communication node are connected.Obtain about
The method of the diagnostic message of a plurality of communication nodes of composition In-vehicle networking will be described in more detail below.
First terminal node 411, the 4th terminal node 421 and the 7th terminal node 431 can belong to and be included in car
The first system (such as, power assembly control system).Second terminal node 412, the 5th terminal node
422 and the 8th terminal node 432 can belong to the second system (such as, body control system) being included in vehicle.
Third terminal node 413, the 6th terminal node 423 and the 9th terminal node 433 can belong to and be included in vehicle
3rd system (such as, multimedia system).That is, it is connected to each switch the terminal of 410,420 and 430
Node 411,412,413,421,422,423,431,432 and 433 can belong to different systems.
Switch 410,420 and 430 and terminal node 411,412,413,421,422,423,431,
Each of 432 and 433 can have the topology information about In-vehicle networking.Such as, it is applied to vehicle-mounted when electric power
During network (such as, vehicle is equipped with battery), switch 410,420 and 430 and terminal node 411,412,
Each of 413,421,422,423,431,432 and 433 can layer communication node be (such as, from it
Switch, gateway etc.) receive the message including the topology information about In-vehicle networking, and can be by disappearing of receiving
Breath checks the topology of In-vehicle networking.Alternatively, the topology information about In-vehicle networking can be pre-stored within switch
410,420 and 430 and terminal node 411,412,413,421,422,423,431,432 and 433.
Switch 410,420 and 430 and terminal node 411,412,413,421,422,423,431,432
Can be based on the topology of the information check In-vehicle networking stored with 433.
Terminal node 411,412,413,421,422,423,431,432 and 433 can have respective
Unique Internet Protocol (IP).When power is applied to In-vehicle networking (such as, vehicle is equipped with battery),
Respective IP address can be arranged to terminal node 411,412,413,421,422,423,431,432
With 433.Such as, when electric power is applied to In-vehicle networking (such as, vehicle is equipped with battery), switch 410,
420 and 430 and terminal node 411,412,413,421,422,423,431,432 and 433 every
One can receive the message including IP address by layer communication node (such as, switch, gateway etc.) from it, and
The IP address being included in received message can be set to the IP address of himself.Alternatively, IP address
The every of terminal node 411,412,413,421,422,423,431,432 and 433 can be pre-stored within
One.Each of terminal node 411,412,413,421,422,423,431,432 and 433 can
The IP address of pre-stored is set to himself IP address.
IP address can have the form of " 10.xxx.yyy.zz ".Section " xxx " in IP address can represent corresponding communication
Vehicular system belonging to node.That is, the communication node belonging to identical systems can have identical " xxx ".Such as,
First terminal node 411, the section " xxx " in the IP address of the 4th terminal node 421 and the 7th terminal node 431
May be configured as " 100. " such as, the second terminal node 412, the 5th terminal node 422 and the 8th terminal node 432
IP address in section " xxx " may be configured as " 200 ".Such as, third terminal node 413, the 6th terminal joint
Point 423, the section " xxx " in the IP address of the 9th terminal node 433 may be configured as " 300 ".
Section " yyy " in IP address can represent the classification of Correspond Node.Such as, composition In-vehicle networking is logical
In letter node, the section " yyy " in the IP address of the communication node of minimum classification (that is, terminal node) may be configured as
Section " yyy " in the IP address of the communication node of " 001 " and secondary low classification may be configured as " 002 ".In IP address
Section " zz " index can be represented, for differentiation belong in the communication node of the system represented by " xxx " by
The communication node of the classification that " yyy " represents.Therefore, belong in the communication node of the system represented by " xxx "
The communication node of the classification represented by " yyy " can have different " zz ".Terminal node 411,412,413,
The IP address of 421,422,423,431,432 and 433 can be arranged as shown in table 1 below.
[table 1]
| Communication node type | IP address |
| Terminal node 1 | 10.100.001.01 |
| Terminal node 2 | 10.200.001.01 |
| Terminal node 3 | 10.300.001.01 |
| Terminal node 4 | 10.100.001.02 |
| Terminal node 5 | 10.200.001.02 |
| Terminal node 6 | 10.300.001.02 |
| Terminal node 7 | 10.100.001.03 |
| Terminal node 8 | 10.200.001.03 |
| Terminal node 9 | 10.300.001.03 |
The method details of the IP address arranging the communication node of composition In-vehicle networking is not limited to the above, and
The IP address of communication node can be arranged in many ways.
Fig. 5 is sequence chart, it is shown that network diagnosis method according to embodiments of the present invention, and Fig. 6 is sequence chart,
Network diagnosis method according to another embodiment of the present invention is shown.
With reference to Fig. 5 and 6, switch 410,420 and 430, terminal node 411,412 and 413 and OBD
Equipment 400 can form the In-vehicle networking described with reference to Fig. 4.That is, switch 410,420 and 430, terminal saves
Point 411,412 and 413 and OBD equipment 400 may correspond to have in the In-vehicle networking shown in Fig. 4 identical
The configuration of element of numeral.Additionally, switch 410,420 and 430, terminal node 411,412 and 413
The topology information about In-vehicle networking can be had with OBD equipment 400.The topology information of In-vehicle networking can include
The IP address of the communication node of each composition In-vehicle networking, port address and MAC Address.According to the present invention
The network that the network diagnosis method of embodiment is applied is not limited to the In-vehicle networking shown in Fig. 4.According to the present invention
The network diagnosis method of embodiment can be applicable to multiple network.Network diagnosis method according to embodiments of the present invention
To describe based on the first switch 410 and the terminal node 411,412 and 413 being connected to the first switch 410.
But, second switch 420 and be connected to the terminal node 421,422 and 423 (or the of second switch 420
Three switches 430 and the terminal node 431,432 and 433 being connected to the 3rd switch 430) will retouch as follows
The method stated can diagnose similarly or comparably.
Network diagnosis method shown in Fig. 5 can have identical with S520 with the network diagnosis method shown in Fig. 6
Operation, but the operation before S520 is different.That is, for checking in the network diagnosis method shown in Fig. 5
Whether terminal node 411,412 and 413 is in message send/receive operation S500 of malfunction, S501,
S502 and S503 is different from the network diagnosis method shown in Fig. 6 for checking terminal node 411,412 Hes
413 message send/receive operations S510 whether being in malfunction, S511 and S512.For the present invention
(such as, the first message, the first response message, diagnosis request message, diagnostic response disappears the message of embodiment
Breath etc.) message generated based on Ethernet protocol can be represented.The message cocoa generated based on Ethernet protocol is
As described below.
Fig. 7 is block diagram, it is shown that for the example of the message of In-vehicle networking based on Ethernet.
With reference to Fig. 7, message 700 based on Ethernet protocol can include physics (PHY) head, mac frame
With FCS (FCS) territory 708.Mac frame can be generated by the controller 220 of communication node 200.
PHY can include leading 701 and Start Frame Delimiter (SFD) territory 702.Leading 701 can have 7
The size of individual eight bytes also can be used for Timing synchronization.SFD territory 702 can have sequence " 10101011 ".
After mac frame can be positioned SFD territory 702.Mac frame can only include that MAC header maybe can include
MAC header and logic link control (LLC) frame.MAC header can include destination address (DA) territory
703, source address (SA) territory 704 and length/type territory 705.DA territory 703 can have 6 eight bytes
Size also can include the identification information (such as MAC Address) receiving the communication node of mac frame.SA territory
704 sizes can with 6 eight bytes also can include the identification information (example sending the communication node of mac frame
As, MAC Address).
Length/type territory 705 can have 2 eight bytes size and may indicate that data field 706 length or with
Too net type, it is by the communication node support sending ethernet frame 700 based on agreement.Such as, when including
When the one or eight byte value in length/type territory 705 is less than or equal to decimal value 1500, length/type territory
705 length that may indicate that data field 706.When the one or eight byte value being included in length/type territory 705 is more than
Or during equal to decimal value 1536, length/type territory 705 may indicate that ethernet type.If necessary (such as,
For meeting the minimum dimension of mac frame), LLC frame can include data field 706 and can farther include region filling
707.In this case, after region filling 707 can be added in data field 706.
Return to Fig. 5 and 6, in network diagnosis method according to embodiments of the present invention, first terminal node 411
Can broadcast, multicast or mode of unicast send the first message (S500).Here, the first message can represent network
Management (NM) message.When receiving the first message from first terminal node 411, the second terminal node 412
The first response message in response to the first message can be sent to first terminal node 411 (S501).In this feelings
Under condition, the second terminal node 412 can send the in the time predefined section receiving the time of the first message
One response message is to first terminal node 411.
First switch 410 can obtain the first message sent from first terminal node 411 and send from second eventually
First response message of end node 412.In the reception time time predefined section of the first message from second
When terminal node 412 receives the first response message, the first switch 410 can determine that the second terminal node 412 also
And the channel (or port) being connected to the second terminal node 412 is in normal condition.Additionally, the first switch
The 410 identification information (examples that can obtain the second terminal node 412 by being included in the SA territory of the first response message
As, MAC Address).First switch 410 can obtain corresponding to the from the known topology information of In-vehicle networking
The IP address of the MAC Address of two terminal nodes 412, port address etc..
Do not receiving from third terminal node 413 in the time predefined section receiving the time of the first message
The first response message time, the first switch 410 can determine that third terminal node 413 and is connected to third terminal
The channel (or port) of node 413 is in malfunction.Such as, the first switch 410 can be by being included in
The SA territory of the first response message checks the terminal node sending the first response message.Based on checking result, first
Switch 410 can check that the do not send the first response message in being connected to switch the terminal node of 410 the 3rd is whole
End node, and can determine that the third terminal node 413 not sending the first response message is in malfunction.This
In, when third terminal node 413 be in malfunction or first switch 410 and third terminal node 413 it
Between channel (or port) when being in malfunction, the first switch 410 can not be from third terminal node 413
The first response message is received in the time predefined section receiving the time of the first message.First switch 410 can
The third terminal node being determined to be in malfunction is obtained from topology information known to known In-vehicle networking
The IP address of 413, port address, MAC Address etc..
It follows that the second terminal node 412 can be broadcasted, multicast or mode of unicast send the first message (S502).
Here, the first message can represent NM message.When receiving the first message from the second terminal node 412, the
Terminal node 411 can send the first response message in response to the first message to the second terminal node 412 one by one
(S503).In this case, first terminal node 411 can predefining from the time that receives of the first message
The first response message is sent to the second terminal node 412 in time period.
First switch 410 can obtain the first message sent from the second terminal node 412 and send from first eventually
First response message of end node 411.Receiving in the time predefined section receiving the time of the first message
During from the first response message of first terminal node 411, the first switch 410 can determine that first terminal node
411 are in normal condition with the channel (or port) being connected to first terminal node 411.Additionally, first opens
Close the 410 identification information that can obtain first terminal node 411 by being included in the SA territory of the first response message
(such as, MAC Address).First switch 410 can obtain corresponding to the from the known topology information of In-vehicle networking
The IP address of the MAC Address of one terminal node 411, port address etc..
In the time predefined section receiving the time of the first message, do not receiving the from third terminal node 413
During one response message, the first switch 410 can determine that third terminal node 413 and is connected to third terminal node
The channel (or port) of 413 is in malfunction.First switch 410 can be from the known topology letter of In-vehicle networking
Breath obtains the IP address of the third terminal node 413 being defined as malfunction, port address, MAC Address
Deng.
The third terminal node 413 being in malfunction can not send the first message and the first response message.When
The channel (or port) that third terminal node 413 is connected is in malfunction and third terminal node 413
When being in normal condition, send from the first message of third terminal node 413 and the first response message not by the
One switch 410, first terminal node 411 and the second terminal node 412 receive.
It follows that in network diagnosis method according to another embodiment of the present invention, the first switch 410 can
With broadcast, multicast or mode of unicast send the first message (S510).Here, the first message can represent that NM disappears
Breath.When from first switch 410 reception the first message, first terminal node 411 can send in response to first
First response message (such as, ACK message) of message switchs 410 (S511) to first.In this situation
Under, first terminal node 411 can send the first sound in the time predefined section receiving the time of the first message
Answer message to the first switch 410.When from first switch 410 reception the first message, the second terminal node 412
The first response message (such as, ACK message) in response to the first message can be sent to the first switch 410
(S512).In this case, the second terminal node 412 can predefining from the time that receives of the first message
The first response message is sent to the first switch 410 in time period.
Due to first switch 410 the first message send the time time predefined section in from first terminal
Node 411 and the second terminal node 412 obtain the first response message, and the first switch 410 can determine that first eventually
End node 411 and the second terminal node 412 (or it is connected to first terminal node 411 and the second terminal node
The channel (or port) of 412) it is in normal condition.First switch 410 can be by being included in response message
SA territory obtains identification information (such as, the MAC ground of first terminal node 411 and the second terminal node 412
Location).First switch 410 can obtain corresponding to first terminal node from the known topology information of In-vehicle networking
411 and the second IP address of MAC Address of terminal node 412, port address etc..
The third terminal node 413 being in malfunction may not send the first response in response to the first message
Message.The channel (or port) connected when third terminal node 413 is in malfunction and third terminal
When node 413 is in normal condition, send from the first response message of third terminal node 413 not by first
Switch 410 reception.Not the first message send the time time predefined section in from third terminal node
During 413 reception the first response message, the first switch 410 can determine that third terminal node 413 and is connected to the 3rd
The channel (or port) of terminal node 413 is in malfunction.First switch 410 can be from In-vehicle networking
Known topology information obtains and determines the IP address of the third terminal node 413 being in malfunction, port address,
MAC Address etc..
It follows that OBD equipment 400 can generate diagnosis request message to diagnose the malfunction of In-vehicle networking.
Diagnosis request message can include that at least one request is in the identification information of the communication node of malfunction (or even
Be connected to be in the communication node of the channel (or port) of malfunction) indications, request be in normal shape
The identification information (or connecting the communication node of the channel (or port) being in normal condition) of the communication node of state
Indications, and request about composition In-vehicle networking communication node state (that is, normal condition or therefore
Barrier state) the indications of information.Here, indications can be included in the MAC header of diagnosis request message
Or data field.OBD equipment 400 can be broadcasted, and multicast or mode of unicast send diagnosis request message (S520).
Diagnosis request message can switch 410 by second switch 420 and the 3rd switch 430 transmission to first.Example
As, the 3rd switch 430 being physically connected to OBD equipment 400 can receive diagnosis from OBD equipment 400
Request message also can disappear with forms of broadcasting transmission diagnosis request when diagnosis request message sends with broadcast mode
Breath.The second switch 420 being physically connected to the 3rd switch 430 can be asked from the 3rd switch 430 reception diagnosis
Seek message, and diagnosis request message can be sent with broadcast mode when diagnosis request message sends with broadcast mode,
The first switch 410 being physically connected to second switch 420 can receive diagnosis request from second switch 420 and disappears
Breath.
Alternatively, the 3rd switch 430 being physically connected to OBD equipment 400 can be from OBD equipment 400
Receive diagnosis request message, and can work as and be included in the DA address of diagnosis request message and represent the first switch 410
Time route diagnosis request message to the second switch 420 being connected to the first switch 410.It is physically connected to the 3rd
The second switch 420 of switch 430 from the 3rd switch 430 reception diagnosis request message, and can be examined when being included in
When the DA address of disconnected request message represents the first switch 410, diagnosis request message can be sent to the first switch
410.The first switch 410 being physically connected to second switch 420 can be asked from second switch 420 reception diagnosis
Seek message.
When receiving diagnosis request message, information that the first switch 410 can check diagnosis request message request (or
The information asked by the indications being included in diagnosis request message) and diagnostic response message can be generated, including asking
Seek information (S521).When diagnosis request message (or being included in the indications of diagnosis request message) request is in
During the identification information of the communication node of malfunction, the first switch 410 can generate diagnostic response message, including
The identification information of third terminal node 413.Alternatively, (or it is included in diagnosis request when diagnosis request message
The indications of message) request be in normal condition the identification information of communication node time, the first switch 410 can
Generate the diagnostic response message of the identification information including first terminal node 411 and the second terminal node 412.
Here, identification information can be included at least one of the MAC header of diagnostic response message and data field.
Alternatively, when diagnosis request message (or diagnosis request message include indications) request composition car
During the status information of the communication node of contained network network, the first switch 410 can generate bitmap, represents first terminal joint
Put the 411, second terminal node 412 and the state of third terminal node 413, and generation includes examining of bitmap
Disconnected response message.Bitmap can be included at least one of the MAC header of diagnostic response message and data field.
Here, suppose that terminal node 411,412 and 413 in the first switch 410 and OBD equipment 400 perception bitmaps
Between order.Such as, first state that can represent first terminal node 411 in bitmap, in bitmap
Second can represent the state of the second terminal node 412, and in bitmap the 3rd can represent that third terminal saves
The state of point 413.Additionally, when position is set to binary value 0, its can represent Correspond Node (or
It is connected to the channel (or port) of Correspond Node) it is in normal condition.When position is set to binary value 1
Time, it can represent that Correspond Node (or being connected to the channel (or port) of Correspond Node) is in event
Barrier state.In this case, the first switch 410 can arrange bitmap and for " 001 " and can generate and include " 001 "
Diagnostic response message.The details of bitmap method to set up is not limited to the above, and bitmap can be with multiple side
Formula is arranged.
It follows that the first switch 410 can broadcast, multicast or mode of unicast (S522) transmission diagnostic response
Message is to OBD equipment 400.That is, diagnostic response message can be by second switch 420 and the 3rd switch 430
Send to OBD equipment 400.When receiving diagnostic response message, OBP equipment 400 can check and be connected to the
The state (S523) of the terminal node 411,412 and 413 of one switch 410.OBD equipment 400 can determine that
First terminal node 411 and the second terminal node 412 are at normal condition and third terminal node 413
In malfunction.At embodiments of the invention, it has been described that diagnostic response message is at diagnosis request message quilt
Generate after reception.But, the order that diagnostic response message is generated is not limited to this.Such as, diagnostic response
Message can generate before diagnosis request message is received.First switch 410 is when receiving diagnosis request message
The diagnostic response message being previously generated can be sent to OBD equipment 400.
Method according to embodiments of the present invention can be embodied as can being performed and be recorded in computer by multiple computer can
Read the programmed instruction of medium.Computer-readable medium can include programmed instruction, data file, data structure or
A combination thereof.The programmed instruction being recorded in computer-readable medium can be specifically tailored so as and be configured to the present invention
Can be maybe known and be available for computer software fields technical staff.
The example of computer-readable medium can include hardware device, and such as ROM, RAM and flash memory are described
Hardware device is configured specifically with storage and performs programmed instruction.The example of programmed instruction includes machine code,
Described machine code is by such as, and compiler and the higher-level language code being utilized interpreter to perform by computer are made
Go out,.Above-mentioned Exemplary hardware devices can be configured to as at least one software module, to perform the present invention's
Operation, vice versa.
According to embodiments of the invention, it is readily determined the state of each communication node of composition In-vehicle networking
The state of the channel (or port) that (that is, normal condition or malfunction) and communication node are connected is possible.
Based on a determination that the communication node of result malfunction and channel can quickly be repaired.Therefore the property of In-vehicle networking
Can be able to be enhanced.
Although the example of the embodiment of the present invention and advantage thereof are described in detail, it should can make reason herein
Solve multiple amendment, replace and change is made without departing from the scope of the present invention.
Claims (20)
1. an operational approach for the first communication node of network consisting, described operational approach comprises the following steps:
The first response based on the first message sent between communication node with in response to described first message disappears
Breath, checks and each whether is in malfunction in communication node that described first communication node connects；With
And
Generating diagnostic response message, described diagnostic response message includes being in the logical of malfunction or normal condition
The identification information of letter node.
Operational approach the most according to claim 1, wherein the first message is that network management (NM) disappears
Breath.
Operational approach the most according to claim 1, wherein, when in response to the first of described first message
When response message is not received in time predefined section, the first communication node determines therefrom will send first
The communication node of response message is in malfunction.
Operational approach the most according to claim 1, wherein the first communication node is switch or bridge, and
Each for terminal node with what described first communication node connected in communication node.
Operational approach the most according to claim 1, wherein said identification information is Internet protocol (IP)
Address, port numbers and media interviews control at least one in (MAC) address.
Operational approach the most according to claim 1, wherein when receiving from OBD (OBD) equipment
During to diagnosis request message, described diagnostic response message is generated.
Operational approach the most according to claim 6, wherein the first message, the first response message, diagnosis
Each in request message and diagnostic response message is the message generated based on Ethernet protocol.
Operational approach the most according to claim 1, also includes sending to car described diagnostic response message
Carry diagnosis (OBD) equipment.
Operational approach the most according to claim 8, wherein said diagnostic response message is in a broadcast manner
Send.
10. an operational approach for the first communication node of network consisting, described operational approach includes following step
Rapid:
Send the first message at least one communication node connected with the first communication node；
Reception state based on the first response message in response to described first message checks and the first communication section
Whether at least one communication node that point connects is in malfunction；And
Generating diagnostic response message, described diagnostic response message includes being in the logical of malfunction or normal condition
The identification information of letter node.
11. operational approach according to claim 10, wherein, when in response to the of described first message
When one response message is not received in time predefined section, the first communication node determines therefrom will send
The communication node of one response message is in malfunction.
12. operational approach according to claim 10, wherein the first communication node is switch or bridge, and
And and first communication node connect at least one communication node be terminal node.
13. operational approach according to claim 10, wherein this identification information is Internet protocol (IP)
Address, port numbers and media interviews control at least one in (MAC) address.
14. operational approach according to claim 10, wherein receive when OBD (OBD) equipment
During to diagnosis request message, this diagnostic response message is generated.
15. operational approach according to claim 14, wherein the first message, the first response message, diagnosis are asked
Seeking each in message and diagnostic response message is the message generated based on Ethernet protocol.
16. operational approach according to claim 10, also include sending described diagnostic response message to car
Carry diagnosis (OBD) equipment.
The operational approach of 17. 1 kinds of onboard diagnostic devices, described operational approach comprises the following steps:
Send diagnosis request message to the first communication node；And
Receiving diagnostic response message from the first communication node, described diagnostic response message includes and the first communication section
The identification letter of the communication node being in malfunction or normal condition at least one communication node that point connects
Breath.
18. operational approach according to claim 17, wherein the first communication node is switch or bridge, and
And and first communication node connect at least one communication node be terminal node.
19. operational approach according to claim 17, wherein diagnosis request message and diagnostic response message
In each be based on Ethernet protocol generate message.
20. operational approach according to claim 17, wherein this identification information is Internet protocol (IP)
Address, port numbers and media interviews control at least one in (MAC) address.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462026335P | 2014-07-18 | 2014-07-18 | |
| US201462026343P | 2014-07-18 | 2014-07-18 | |
| US62/026,343 | 2014-07-18 | ||
| US62/026,335 | 2014-07-18 | ||
| KR10-2015-0098909 | 2015-07-13 | ||
| KR1020150098909A KR102337548B1 (en) | 2014-07-18 | 2015-07-13 | Method for diagnosing network and apparatus for the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105897453A true CN105897453A (en) | 2016-08-24 |
Family
ID=56854502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510530005.XA Pending CN105897453A (en) | 2014-07-18 | 2015-07-17 | Method for diagnosing network and apparatus for the same |
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| CN (1) | CN105897453A (en) |
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