CN110311992A - The functional addressing method of the unified diagnostic service of automobile Ethernet - Google Patents
The functional addressing method of the unified diagnostic service of automobile Ethernet Download PDFInfo
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- CN110311992A CN110311992A CN201910468802.8A CN201910468802A CN110311992A CN 110311992 A CN110311992 A CN 110311992A CN 201910468802 A CN201910468802 A CN 201910468802A CN 110311992 A CN110311992 A CN 110311992A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5069—Address allocation for group communication, multicast communication or broadcast communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5084—Providing for device mobility
Abstract
The UDS functional addressing method based on automobile Ethernet that present invention discloses a kind of, which comprises the steps of: functional addressing address is done with IP multicast address and is mapped, mapping table is established and is built in the node for Ethernet diagnostic function；According to mapping table, control of the server to external test facility access authority is completed；The deagnostic communication of sending function addresses communications mode is to server；After server receive capabilities addressing diagnosis message, diagnostic process is carried out.Using technical solution of the present invention, client is when processing function is addressed and sent, it is only necessary to which processing is primary, sends a data packet, and the occupancy of the processing time, the time of integrated communication and system bandwidth of external test facility is all improved well.
Description
Technical field
The invention belongs to the deagnostic communication field of automobile Ethernet, especially a kind of UDS based on automobile Ethernet
(Unified Diagnostic Service) functional addressing method.
Background technique
In automobile ethernet technology, the high level data (UDS) of diagnosis is to be carried on DoIP (Diagnostic
Communication over Internet Protocol) on.Specifically it is carried on loadtype in DoIP agreement
On the diagnostic data message of 0x8001.In the DoIP agreement of current version, the diagnosis message for explicitly pointing out 0x8001 is held
It is loaded on TCP (Transmission Control Protocol).That is the deagnostic communication based on DoIP only has
The ability of point-to-point communication.
And deagnostic communication actually supports two kinds of communication patterns, i.e. physical addressing and functional addressing.Physical addressing is exactly a little
Point to-point communication, functional addressing are exactly one-to-many communication.On the implementation of current automobile Ethernet diagnosis, if necessary to function
The communication mode of addressing needs to need the node communicated individually to send data packet to each at DoIP layers, i.e., logical with multiple single-point
The mode of letter completes one-to-many communication.
Traditional vehicle communication bus is CAN (Controller Area Network) bus, and deagnostic communication is total in CAN
When implementing on line, when needing using functional addressing, external test facility only needs to send a message, corresponding all services
Device can receive the message of corresponding functional addressing.
In traditional Ethernet, one-to-many communication also has mature solution, the i.e. broadcast based on IP and multicast.So
And automobile ethernet technology is also in preliminary development stage, the mistake that ethernet technology and original diagnosis communication demand are combined at present
Journey, in the realization of functional addressing, it appears very clumsy.One-to-many communication is substituted with the mode that multiple single-point communicates, is increased
The software of deagnostic communication initiator handles complexity, and with the increase of functional addressing object, needed for the communication of single functional addressing
The data packet to be sent is consequently increased, and the processing time of response and bus bandwidth are all slatterned by meaningless.And it is simple
Directly carry out transmitting function addressing message using ethernet multicast/broadcast, and to vehicle diagnosis business, it is not safe enough.
Summary of the invention
The UDS functional addressing method based on automobile Ethernet that the present invention provides a kind of, to effectively reduce communication
The software of initiator handles complexity, improves the utilization rate of the processing time and bus bandwidth of response.
According to above-mentioned purpose, implement a kind of functional addressing side of unified diagnostic service based on automobile Ethernet of the invention
Method, which comprises the steps of:
Step S1 establishes the mapping table between function group address and IP multicast address；
Step S2 completes control of the server to external test facility access authority, according to the mapping table by server
IP multicast group is added；
Step S3, the diagnosis message of sending function addresses communications mode is to the server in IP multicast group, the diagnosis report
It include IP multicast address in text；
Step S4 carries out diagnostic process according to the diagnosis message of functional addressing mode；
Wherein, the server has function group address and IP address, and the IP multicast address is made of IP address.
Optionally, the step S2 includes:
Step S21 finds the IP address of server；
Step S22 establishes TCP connection with server apparatus；
Step S23, sends the request message of routing activation, include in request message external test facility logically
Location；
Can step S24 carry out deagnostic communication according to logical address judgement, if it is possible to carry out deagnostic communication, then will work as
Preceding TCP connection executes step S25 labeled as activation；Otherwise, step S26 is executed；
Step S25 finds out IP multicast address corresponding with the function group address of server, will take according to mapping table
It is engaged in device addition IP multicast group, logical address is labeled as activation；
Step S26 disconnects current TCP connection, if external test facility and server do not have other connections at this time,
Server exits IP multicast group.
Optionally, in the step S3, according to the IP multicast address in the diagnosis message, external test facility is by function
The diagnosis message of addresses communications mode is sent to the server in IP multicast group, wherein the data packet of the IP multicast address according to
User Datagram Protocol encapsulation.
Optionally, the step S4 includes:
Step S41, whether the logical address for detecting external test facility has activated, if so, performing the next step；Otherwise,
Failure response code is sent to external test facility, closes current TCP connection；
Step S42, judges whether server supports function group address corresponding with the IP multicast address in diagnosis message, such as
Fruit is to perform the next step；Otherwise, it sends failure response code and to external test facility and abandons the diagnosis message；
Step S43 sends success response code to external test facility, diagnosis message is reported at the diagnosis in server
Module is managed, diagnostic process is started.
According to above-mentioned purpose, implement a kind of external test facility of the invention, it is unified for being realized on automobile Ethernet
The functional addressing of diagnostic service, which is characterized in that
The external test facility sends the request message of routing activation to server, after routing activation according to functional group
IP multicast group is added in server by mapping table between location and IP multicast address, and sending function addressing simultaneously is logical when deagnostic communication
The diagnosis message of letter mode carries out diagnostic process to the server in IP multicast group；
Wherein, the server has function group address and IP address, includes IP multicast address in the diagnosis message.
Optionally, include the logical address of external test facility in the request message, judge for server
Whether external test facility has permission carry out deagnostic communication.
According to above-mentioned purpose, implement a kind of vehicle netbios of the invention, it is unified for being realized on automobile Ethernet
The functional addressing of diagnostic service, including gateway and server, the gateway are used for the deagnostic communication of IP based network, and feature exists
In,
The gateway, for establishing TCP connection between external test facility and server, by function group address and IP group
The mapping table between address is broadcast to be built on its internal node relevant to diagnostic function；
The server receives external test facility and sends the request message of routing activation and judge that external test facility is
It is no to have permission carry out deagnostic communication；The diagnosis message of receive capabilities addresses communications mode and diagnostic process is carried out when deagnostic communication.
Optionally, the logical address for the external test facility for including in the request message, the server according to
The logical address judges whether external test facility has permission carry out deagnostic communication.
Optionally, the server internal includes diagnostic process module, can carry out diagnostic process according to diagnosis message.
Optionally, the communication connection mode of external equipment and server includes wireless communication, wire communication；
The wireless communication includes but is not limited to Wifi, 4G, 5G, bluetooth.
Using technical solution of the present invention, in view of the deficiencies of the prior art, reflected by using functional address and IP address
Firing table, and it is improved using the binding authority access mechanism and improved ethernet multicast mechanism, use of TCP and routing activation
Multicast pattern, client is when processing function is addressed and sent, it is only necessary to which processing is primary, sends a data packet, and outside is surveyed
The occupancy for trying the processing time, the time of integrated communication and system bandwidth of equipment is all improved well.
Detailed description of the invention
Fig. 1 is: the flow chart of functional addressing mode access control；
Fig. 2 is: the structure chart of mode of unicast diagnosis message under functional addressing mode；
Fig. 3 is: the structure chart of multicast mode diagnosis message under functional addressing mode；
Fig. 4 is: the structural schematic diagram of IP data payload；
Fig. 5 is: the structural schematic diagram of TCP data load；
Fig. 6 is: UDP structural schematic diagrams；
Fig. 7 is: mode of unicast schematic diagram；
Fig. 8 is: multicast mode schematic diagram；
Fig. 9 is: the flow chart that message receives processing is diagnosed under functional addressing mode.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawings and examples.Automobile Ethernet is based in the present invention
UDS functional addressing method specific implementation step are as follows:
Firstly, functional addressing address and IP multicast address establish mapping table.
According to DoIP consensus standard, functional addressing address is provided as follows:
The definition of 1 functional addressing group address of table
And the IP address between 224.0.0.0~239.255.255.255 is all used as IP multicast address by IP agreement, wherein
224.0.2.0~238.255.255.255 is the available multicast address of user.
In actual use, function group address (functional addressing address) is done first with IP multicast address and is mapped one by one, and
Mapping table is built on automobile Ethernet diagnostic function interdependent node.
In one embodiment, function group address and IP multicast address mapping table can be as follows:
| Function group address | IP multicast address |
| 0xE000 | 225.1.224.0 |
| 0xE000…0xE3FF | 225.1.224.0…225.1.227.255 |
| 0xE400…0xEFFF | 225.1.228.0…225.1.239.255 |
2 function group address of table and IP multicast mapping table
It should be noted that mapping table is that automobile Ethernet diagnostic service functional addressing mode can be carried on the multicast side IP
Necessary in formula, but mapping table content is not limited to range shown in above-mentioned table 2.
Secondly, completing function using binding authority access mechanism being adapted to IP multicast of TCP and routing activation and seeking
Control and management of the server of location mode to external test facility access authority.
As shown in Fig. 2, key step is as follows:
(a) external test facility initiates DoIP equipment and finds process, finds the facility information of server (ECU), such as such as
IP address etc.；
(b) external test facility actively initiates to server (ECU) and is successfully established TCP connection；
(c) external test facility initiates routing activation request in the TCP channel of foundation, surveys in request message with external
Try the logical address of equipment；
(d) server (ECU) judges whether external test facility has the right according to the logical address of external test facility
Limit carries out subsequent deagnostic communication；
If (e) server (ECU) judges that external test facility has the right to carry out follow-up diagnosis communication, by present communications
TCP connection is labeled as effective；Simultaneously according to the function group address of server (ECU) oneself, locating function group address and IP multicast
Server (ECU) is added in corresponding IP multicast group mapping table；Server (ECU) is by the logical address of external test facility
It is bound labeled as activation, and to current TCP connection；
If (f) server (ECU) judges that external test facility haves no right to carry out follow-up diagnosis communication, disconnect currently
TCP connection, if be connected on server end (ECU) without external test facility at this time, server end (ECU) is exited
IP multicast group.
Logical address can be the IP address of external test facility, identity number (ID, Identity) or other
The information such as label, can pre-define, be set in server (ECU).
The present invention increases the process of adaptation cast communication on original DoIP routing activation mechanism, in activation successful instance
Under, server needs in the case where known function group address itself, after locating function group address mapping table (i.e. table 2), is added
Corresponding IP multicast group.And in the case where activating failure, if it is confirmed that all clients are all already off, then server needs
Exit corresponding IP multicast group.
Thirdly, the diagnosis message of external test facility sending function addresses communications mode is to server.
When external test facility needs to initiate the communication of functional addressing modality diagnostic, built-in function group address should be inquired and reflected
Firing table (i.e. table 2) will diagnose the purpose functional group address conversion in message into IP multicast address.
In one embodiment, the port numbers that appointment function addresses communications mode uses are 13401.
As shown in Figure 2,3, after walking IP multicast mode using functional addressing mode, data packet format is in DoIP with upper layer with former
It walks TCP mode to remain unchanged, in order to walk multicast mode, transport layer has been carried on UDP, and IP layers of target ip address is
IP multicast address.Upper layer diagnostic process logic all remains unchanged, and maximization has been compatible with original treatment mechanism.
IP (IP Header) are generally 20 byte compositions, also have optional (Option) field, IP in special circumstances
It is IP data payload (data) after head.If Fig. 4 show the structural schematic diagram of IP data payload, wherein destination address
(Destination Address) fills in the IP address of server (ECU) when carrying out single-point One-to-one communication using TCP；
UDP group sowing time, query function group address and IP multicast mapping table are being used, it is corresponding to fill in server (ECU) function group address
Multicast ip address.Other IP head files, in two kinds of communication modes, fill substance is the same.
TCP header (TCP Header) portion's field is generally made of 20 bytes, is also had in special circumstances optional
(Option) field, TCP header are TCP data load (data) later, are illustrated in figure 5 the structural representation of TCP data load
Figure.In DoIP existing protocol agreement, the either One-to-one communication of single-point or one-to-many communication are all unified to use TCP
Mode carries out.
UDP (UDP Header) are formed by fixing 8 bytes, and structure is as shown in Figure 6.Inherently due to Transmission Control Protocol
It is designed for One-to-one communication, does not support multicast mode；And UDP supports multicast mode.Therefore one is being carried out using multicast mode
When to more communication, need using UDP, according to UDP format encapsulated data packets.
After IP layers of external test facility formula become multicast from unicast, client is when processing function is addressed and sent, it is only necessary to
Processing is primary, sends a data packet, it is no longer necessary to when as unicast mode, individually send portion to each destination node
Data.As shown in Figure 7,8, after using multicast pattern, the processing time of external test facility, the time of integrated communication, and be
Commanding wide occupancy all will be improved.
Finally, carrying out diagnostic process after server receive capabilities addressing diagnosis message.
As shown in figure 9, server receive functional addressing diagnosis message after treatment mechanism it is as follows:
(a) server (ECU) judges whether the logical address for diagnosing the external test facility in message is registered, and registers
Process is shown in Fig. 1.If do not registered, server (ECU) returns to failure response code to external test facility, is then shut off and works as
Preceding TCP connection；If there is registration, then enter in next step.
(b) server (ECU) judges to diagnose whether the function group address in message is that oneself is supported, belonging to server
Functional address group is pre-set, and specific server only receives the message of the functional address group belonging to oneself.If function
Energy group address is unknown, then server (ECU) returns to failure response code to external test facility；If function group address it is known that if
Into in next step.
(c) server end (ECU) returns to success response code to external test facility, and the related data of diagnosis is issued pair
The diagnostic process module answered carries out the processing of next step.
Wherein, client logic address is registered first in access authority authentication (routing activation) process.Only
The multicast packets for obtaining the functional addressing mode of the client sending of server access permission can just be received by server.
Functional address group belonging to server is pre-set, and specific server only receives the function belonging to oneself
The message of group of addresses.
Abbreviation in specification is mainly as follows:
3 abbreviation of table
The present invention uses ethernet ip layer/MAC layer multicast, broadcast mode, realizes the functional addressing mould of vehicle diagnosis communication
Formula.The present invention is accessed especially by using functional address and IP address mapping table, and using the binding authority of TCP and routing activation
Mechanism and improved ethernet multicast mechanism had both met the demand for security of vehicle diagnosis business, simultaneously using multicast pattern
It can be realized a pair of of multi-communication mode of automobile ethernet feature addressing mode, the processing time of external test facility, entirety are logical
The time of letter and the occupancy of system bandwidth are all improved well.
Claims (10)
1. a kind of functional addressing method of the unified diagnostic service based on automobile Ethernet, which comprises the steps of:
Step S1 establishes the mapping table between function group address and IP multicast address；
Step S2 completes control of the server to external test facility access authority, server is added according to the mapping table
IP multicast group；
Step S3, the diagnosis message of sending function addresses communications mode is to the server in IP multicast group, in the diagnosis message
It include IP multicast address；
Step S4 carries out diagnostic process according to the diagnosis message of functional addressing mode；
Wherein, the server has function group address and IP address, and the IP multicast address includes IP address.
2. a kind of functional addressing method of the unified diagnostic service based on automobile Ethernet as described in claim 1, feature
It is, the step S2 includes:
Step S21 finds the IP address of server；
Step S22 establishes TCP connection with server apparatus；
Step S23, sends the request message of routing activation, includes the logical address of external test facility in request message；
Can step S24 carry out deagnostic communication according to logical address judgement, if it is possible to carry out deagnostic communication, then by current TCP
Linkage flag is activation, executes step S25；Otherwise, step S26 is executed；
Step S25 finds out IP multicast address corresponding with the function group address of server, by server according to mapping table
It is added in IP multicast group, logical address is labeled as activation；
Step S26 disconnects current TCP connection, if external test facility and server do not have other connections at this time, services
Device exits IP multicast group.
3. a kind of functional addressing method of the unified diagnostic service based on automobile Ethernet as described in claim 1, feature
It is, in the step S3, according to the IP multicast address in the diagnosis message, functional addressing is communicated mould by external test facility
The diagnosis message of formula is sent to the server in IP multicast group, wherein the data packet of the IP multicast address is according to user data package
Protocol encapsulation.
4. a kind of functional addressing method of the unified diagnostic service based on automobile Ethernet as claimed in claim 2, feature
It is, the step S4 includes:
Step S41, whether the logical address for detecting external test facility has activated, if so, performing the next step；Otherwise, it sends
Failure response code closes current TCP connection to external test facility；
Step S42, judges whether server supports function group address corresponding with the IP multicast address in diagnosis message, if
It is to perform the next step；Otherwise, it sends failure response code and to external test facility and abandons the diagnosis message；
Step S43 sends success response code to external test facility, diagnosis message is reported to the diagnostic process mould in server
Block starts diagnostic process.
5. a kind of external test facility, for realizing the functional addressing of unified diagnostic service on automobile Ethernet, feature exists
In,
The external test facility sends the request message of routing activation to server, after routing activation according to function group address with
IP multicast group is added in server by mapping table between IP multicast address, sending function addresses communications mode simultaneously when deagnostic communication
Diagnosis message in IP multicast group server carry out diagnostic process；
Wherein, the server has function group address and IP address, includes IP multicast address in the diagnosis message.
6. a kind of external test facility as claimed in claim 5, which is characterized in that
Include the logical address of external test facility in the request message, judges external test facility for server
Whether carry out deagnostic communication is had permission.
7. a kind of vehicle netbios, for realizing the functional addressing of unified diagnostic service, including gateway on automobile Ethernet
And server, the gateway are used for the deagnostic communication of IP based network, which is characterized in that
The gateway, for establishing TCP connection between external test facility and server, by function group address and IP multicast
Mapping table between location is built on its internal node relevant to diagnostic function；
The server receives external test facility and sends the request message of routing activation and judge whether external test facility has
Permission carries out deagnostic communication；The diagnosis message of receive capabilities addresses communications mode and diagnostic process is carried out when deagnostic communication.
8. a kind of vehicle netbios as claimed in claim 7, which is characterized in that
The logical address for the external test facility for including in the request message, the server is according to the logical address
Information judges whether external test facility has permission carry out deagnostic communication.
9. a kind of vehicle netbios as claimed in claim 7, which is characterized in that
The server internal includes diagnostic process module, can carry out diagnostic process according to diagnosis message.
10. a kind of vehicle netbios as claimed in claim 7, which is characterized in that the communication of the external equipment and server
Connection type includes wireless communication, wire communication；
The wireless communication includes at least one of Wifi, 4G, 5G, bluetooth.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468802.8A CN110311992B (en) | 2019-05-31 | 2019-05-31 | Function addressing method for unified diagnosis service of automobile Ethernet |
| PCT/CN2020/075781 WO2020238291A1 (en) | 2019-05-31 | 2020-02-18 | Automobile ethernet-based unified diagnostic service functional addressing method |
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| CN201910468802.8A CN110311992B (en) | 2019-05-31 | 2019-05-31 | Function addressing method for unified diagnosis service of automobile Ethernet |
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| T. PUSATERI等: "IP Multicast over Token-Ring Local Area Networks", 《RFC 1469》 * |
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| WO2020238291A1 (en) * | 2019-05-31 | 2020-12-03 | 上海赫千电子科技有限公司 | Automobile ethernet-based unified diagnostic service functional addressing method |
| CN110913006A (en) * | 2019-11-29 | 2020-03-24 | 深圳市元征科技股份有限公司 | Remote diagnosis method and system |
| CN111404794A (en) * | 2020-03-12 | 2020-07-10 | 山东超越数控电子股份有限公司 | CAN bus network sharing system and method based on virtualization |
| CN111404794B (en) * | 2020-03-12 | 2021-11-16 | 超越科技股份有限公司 | CAN bus network sharing system and method based on virtualization |
| CN111367746A (en) * | 2020-03-16 | 2020-07-03 | 纳瓦电子（上海）有限公司 | Test method of wireless complete machine |
| CN111474878A (en) * | 2020-04-07 | 2020-07-31 | 张根兵 | Electric drive vehicle control delay optimization method based on traversal cycle and electronic equipment |
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| CN112783549A (en) * | 2021-01-08 | 2021-05-11 | 东风汽车股份有限公司 | Method for upgrading data version number of automobile electric control element |
| CN113485920A (en) * | 2021-07-01 | 2021-10-08 | 中瓴智行(成都)科技有限公司 | Method and device for realizing DoIP entity, readable storage medium and electronic equipment |
| CN113485920B (en) * | 2021-07-01 | 2024-02-02 | 中瓴智行(成都)科技有限公司 | Method and device for realizing DoIP entity, readable storage medium and electronic equipment |
| CN115065699A (en) * | 2022-06-08 | 2022-09-16 | 深圳市元征科技股份有限公司 | Route activation method, device, equipment and medium based on remote diagnosis |
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