CN115220419B - Whole vehicle offline configuration method and device based on wireless protocol and vehicle - Google Patents
Whole vehicle offline configuration method and device based on wireless protocol and vehicle Download PDFInfo
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- CN115220419B CN115220419B CN202111518510.4A CN202111518510A CN115220419B CN 115220419 B CN115220419 B CN 115220419B CN 202111518510 A CN202111518510 A CN 202111518510A CN 115220419 B CN115220419 B CN 115220419B
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000004913 activation Effects 0.000 claims abstract description 57
- 238000012423 maintenance Methods 0.000 claims abstract description 23
- 238000012795 verification Methods 0.000 claims abstract description 19
- 230000007123 defense Effects 0.000 claims abstract description 15
- 230000006870 function Effects 0.000 claims description 35
- 230000004044 response Effects 0.000 claims description 22
- 238000013475 authorization Methods 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 238000003745 diagnosis Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The application discloses a whole vehicle offline configuration method and device based on a wireless protocol and a vehicle, wherein the whole vehicle offline configuration method based on the wireless protocol comprises the following steps: the vehicle is automatically connected to a wireless network without password verification; judging whether the vehicle receives a management frame with a subtype of an activation request through a wireless network; if the vehicle receives a management frame with the subtype being an activation request through the wireless network, a corresponding functional mode is entered according to the frame content, wherein the functional mode comprises a downlink configuration mode, an after-sales maintenance mode and a security defense mode. Through the mode, the application reserves the design and use of undefined subtype through the management frame, integrates the processes of function starting, safety authentication and the like, reduces the consumption of the computing resource of the vehicle, increases the safety and reduces the management problems caused by presetting authentication information such as passwords or secret keys.
Description
Technical Field
The present application relates to the field of automotive electronics, and in particular, to a method and an apparatus for configuring a whole vehicle offline based on a wireless protocol, and a vehicle.
Background
At present, when connection authentication is performed by adopting wireless modes such as WIFI and the like, authentication is performed based on the modes such as WEP/WPA/WPA2 and the like which are mature at present. In either case, a password or key pre-configuration is required so that the vehicle will automatically connect to the particular wireless network when it is off-line at the factory or at the 4S store. The pre-configured mode has the risk of password or key leakage, only has authentication function, requires application triggering of an additional layer for the function starting of the vehicle, and can not automatically enter a corresponding configuration or diagnosis mode when wireless connection is not realized.
Disclosure of Invention
The application provides a method, a device and a vehicle for vehicle offline configuration based on a wireless protocol, which are used for solving the problems that in the prior art, the risk of password or key leakage exists and corresponding configuration or diagnosis mode can not be automatically entered when wireless connection is realized.
In order to solve the technical problems, the application provides a whole vehicle offline configuration method based on a wireless protocol, which comprises the following steps: the vehicle is automatically connected to a wireless network without password verification; judging whether the vehicle receives a management frame with a subtype of an activation request through a wireless network; if the vehicle receives a management frame with the subtype being an activation request through the wireless network, a corresponding functional mode is entered according to the frame content, wherein the functional mode comprises a downlink configuration mode, an after-sales maintenance mode and a security defense mode.
Optionally, the frame content includes function activation configuration information and authorization authentication information, and entering a corresponding function mode according to the frame content includes: when the frame content is detected to comprise function activation configuration information and authorization authentication information, entering a downlink configuration mode or an after-sale maintenance mode; when it is detected that the frame content does not include authorization authentication information, a security defense mode is entered.
Optionally, after entering the corresponding functional mode according to the frame content, the method further comprises: the vehicle replies a subtype with an active reply management frame over the wireless network to inform the vehicle that verification has been completed and to initiate the relevant functional mode.
Optionally, the wireless protocol is an 802.11 wireless authentication protocol. The frame structure of the 802.11 wireless authentication protocol includes management frames and frame content; the management frame is sixteen bits; the frame content is filled with information corresponding to the management frame.
Optionally, the subtypes of the management frame include an activation request, an activation response, a probe request, a probe response, a verification request, a verification response, a connection request, and a connection response.
Optionally, the whole vehicle offline configuration method based on the wireless protocol further comprises the following steps: before the vehicle goes offline, the subtype of the management frame is predefined, and information corresponding to the management frame is filled in the frame content, so that function activation and authorization authentication are realized.
Optionally, if the vehicle receives no management frame with a subtype of the activation request through the wireless network, the wireless network is used to implement the internet service.
In order to solve the technical problems, the application provides a whole vehicle offline configuration device based on a wireless protocol, which comprises: the communication module is used for automatically connecting the vehicle to a wireless network without password verification through the communication module; the judging module is used for judging whether the vehicle receives a management frame with the subtype being an activation request through a wireless network; and the function module is used for entering a corresponding function mode according to the frame content when the vehicle receives a management frame with the subtype of the activation request through the wireless network, wherein the function mode comprises a offline configuration mode, an after-sale maintenance mode and a security defense mode.
In order to solve the technical problems, the application provides an electronic control unit which comprises a memory and a processor, wherein the memory is connected with the processor, the memory stores a computer program, and the computer program is executed by the processor to realize the whole vehicle offline configuration method based on the wireless protocol.
In order to solve the technical problems, the application provides a vehicle, which comprises a vehicle body and the electronic control unit.
The application provides a whole vehicle offline configuration method, a device and a vehicle based on a wireless protocol, which are characterized in that undefined subtypes are reserved through a management frame, and the subtype is added into the management frame of an activation request; when the vehicle is connected with a wireless network without password verification and a management frame with a subtype of an activation request is received, a corresponding functional mode can be entered according to the frame content, wherein the functional mode comprises a downlink configuration mode, an after-sale maintenance mode and a security defense mode. Compared with the prior art, the application has the beneficial effects that:
(1) Authentication information such as a password or a key does not need to be preset.
(2) The authentication information can be dynamically changed, so that a safer authentication mode is brought while maintenance and management of the authentication information are omitted.
(3) Authentication and function opening can be associated together, monitoring starting at the moment of an upper application is not needed, and resource consumption of a vehicle is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of configuring or maintaining a vehicle using WIFI and other wireless technologies in the prior art;
FIG. 2 is a schematic diagram of one embodiment of the authentication process of FIG. 1;
FIG. 3 is a flow chart of an embodiment of a method for configuring a whole vehicle offline based on a wireless protocol according to the present application;
FIG. 4 is a diagram illustrating an exemplary frame structure of an 802.11 wireless authentication protocol according to the present application;
FIG. 5 is a schematic diagram of another embodiment of a whole vehicle offline configuration method based on a wireless protocol according to the present application;
FIG. 6 is a diagram of one embodiment of determining whether an activation request management frame is received in FIG. 5;
FIG. 7 is a schematic diagram illustrating an embodiment of a wireless protocol based whole vehicle offline configuration device according to the present application;
fig. 8 is a schematic structural diagram of an embodiment of the electronic control unit of the present application.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the application, the method, the device and the vehicle for configuring the whole vehicle offline based on the wireless protocol provided by the application are further described in detail below with reference to the accompanying drawings and the specific embodiments.
In the prior art, for the scene that a vehicle is configured or maintained in a wireless mode such as WIFI, the WIFI wireless is basically only used as network access, and the application requiring an upper layer for function opening is independently triggered.
Referring to fig. 1-2, fig. 1 is a flow chart of an embodiment of configuring or maintaining a vehicle by wireless such as WIFI in the prior art; fig. 2 is a schematic diagram of an embodiment of the authentication process of fig. 1.
In the prior art, connection authentication on a specific SSID is realized based on pre-buried authentication information, and additional applications are required to be started for whole car offline configuration or after-sales maintenance to trigger corresponding functions. This solution has the following drawbacks:
(1) There is a risk of a password or key disclosure. The wireless authentication password or key needs to be preset in the early stage, so that the wireless authentication password or key is easy to extract and view, and authentication information is revealed.
(2) The authentication information cannot be modified, and thus, management of the authentication information is difficult. The new and old vehicle types need to adopt unified authentication information to ensure that the vehicle types in different periods can be accessed to the same network to complete the configuration diagnosis function, and the follow-up failure to periodically change the authentication information is limited. The authentication information is easier to reveal after long-term use of the same authentication information.
(3) Authentication and function triggering are separated, and additional upper layer application coordination is required. When the operations such as offline configuration, diagnosis and maintenance are needed, after the wireless network is connected, the functions cannot be started in an associated mode, the upper-layer application is needed to be independently triggered and completed, the efficiency is low, and the additional application needs to consume corresponding vehicle computing resources.
Based on this, the present application proposes a whole vehicle offline configuration method based on a wireless protocol, referring to fig. 3, fig. 3 is a flow chart of an embodiment of a whole vehicle offline configuration method based on a wireless protocol, in this embodiment, the whole vehicle offline configuration method based on a wireless protocol may include steps S110 to S130, where each step is specifically as follows:
s110: the vehicle is automatically connected to a wireless network that does not require password verification.
The vehicle can automatically connect to a wifi wireless network without password verification when the vehicle is off line in a factory or enters a specific after-sales maintenance area. Wifi includes STA mode and AP mode.
AP mode: access Point, providing wireless Access services, allowing other wireless devices to Access, providing data Access, and the general wireless router/bridge operates in this mode. The AP and the AP allow for interconnection.
STA mode: station, like a wireless terminal, does not accept wireless access by itself, it can connect to an AP, and the general wireless network card operates in this mode.
In this embodiment, the vehicle adopts the STA mode, and the device for configuration and maintenance adopts the AP mode.
Further, the wireless protocol of the present embodiment is exemplified by the 802.11 wireless authentication protocol. Please refer to fig. 4, which is a diagram illustrating an exemplary frame structure of an 802.11 wireless authentication protocol according to an embodiment of the present application. The frame structure of the 802.11 wireless authentication protocol includes management frames and frame content.
Specifically, the first two bytes (Frame Control) of the Frame structure are Frame management, which represents information of different frames by sixteen bits, i.e., management frames are sixteen bits.
The first two bits (protocols) of the management frame are typically 00, since there is only one version of the current 802.11 Protocol cluster. The next two bits (Type) are the definition frame Type, 00 for management frames, 01 for control frames, and 10 for data frames. The four bits down (Sub type) define the subtype of the frame. In the prior art, the subtypes of the management frame include probe request, probe response, authentication request, authentication response, connection request, and connection response.
Unlike the prior art, the embodiment also defines and uses two undefined management frame subtypes to overcome the defects of the existing vehicle that the vehicle is configured to be off-line or maintained after sale based on WIFI wireless. The subtypes of the management frame in this embodiment thus include an activation request, an activation response, a probe request, a probe response, a verification request, a verification response, a connection request, and a connection response.
The activation request and the activation response are subtypes of the newly added management frame in the present embodiment. The activation request is used for activating the vehicle to enter a downlink configuration mode or an after-sales maintenance mode; the activation response is used for responding to the activation request of the access AP.
Optionally, of the subtype of management frames, 0000 represents a connection request, 0001 represents a connection response, 0111 represents an activation request, 1111 represents an activation response, and more so.
The frame content is filled with information corresponding to the management frame. For example, in the management frames of the above-defined 0111 and 1111 sub-services, the service configuration, authentication information, and the like of the sub-service definition may be filled into the Frame content (Frame Body). Thus realizing the functions of activation and starting, authorization and authentication and the like of the custom service.
It should be noted that 0111 and 1111 are undefined subtypes of reservation commonly used in the prior art, and thus these two are used in this embodiment to represent a newly added activation request and activation response. However, in other embodiments, other 01 combinations may be used to represent the sub-types, for example 0000 represents an activation request, 0001 represents an activation response, etc., and the present application is not limited to the specific 01 combination of the sub-types of the management frames, and the specific 01 combination of the sub-types of the management frames may be set according to the actual situation.
Before the vehicle goes offline, the subtype of the management frame is predefined, and information corresponding to the management frame is filled in the frame content, so that function activation and authorization authentication are realized.
S120: it is determined whether the vehicle receives a management frame of subtype activation request over the wireless network.
When the vehicle is connected to the wireless network, it is necessary to determine whether the vehicle receives a management frame of which the subtype is an activation request through the wireless network. If the vehicle receives no management frame with the subtype being the activation request through the wireless network, the wireless network is used for realizing the internet service; subsequent steps are not performed. If the vehicle receives a management frame with a subtype of activation request through the wireless network, step S130 is performed.
S130: if the vehicle receives a management frame with the subtype being an activation request through the wireless network, a corresponding functional mode is entered according to the frame content, wherein the functional mode comprises a downlink configuration mode, an after-sales maintenance mode and a security defense mode.
At this time, the vehicle receives a management frame with a subtype of an activation request through the wireless network, and responds to the activation request, the vehicle further detects the frame content and enters a corresponding functional mode according to the frame content, wherein the functional mode comprises a offline configuration mode, an after-sales maintenance mode and a security defense mode.
Specifically, when it is detected that the frame content includes function activation configuration information and authorization authentication information, a drop-in configuration mode or an after-sales maintenance mode may be entered; when it is detected that the frame content does not include authorization authentication information, a security defense mode is entered. The vehicle enters the safety protection mode, so that the vehicle can be well protected from safety attack, the attack time window of an attacker is contracted, and the difficulty of the safety attack is improved.
Optionally, after entering the corresponding functional mode according to the frame content, step S140 may be further included, specifically:
s140: the vehicle replies a subtype with an active reply management frame over the wireless network to inform the vehicle that verification has been completed and to initiate the relevant functional mode.
In summary, the vehicle of the embodiment is in a specific area, such as a factory or after-sale, and the specific management frame is detected and checked by automatically connecting to a wireless network without a password, so that the vehicle can seamlessly enter a specific functional mode. The embodiment combines wireless connection authentication and function triggering while realizing wireless password-free authentication by defining and using the reserved subtype of the management frame in the 802.11 wireless authentication protocol. The embodiment simplifies the authentication flow and the cost and improves the flexibility of the whole car off-line configuration and after-sales maintenance.
Referring to fig. 5, fig. 5 is a schematic diagram of another embodiment of a whole vehicle offline configuration method based on a wireless protocol according to the present application. FIG. 6 is a diagram of one embodiment of determining whether an activation request management frame is received in FIG. 5.
The embodiment defines and uses the reserved subtype of the management frame in the existing WIFI wireless protocol 802.11, and is suitable for the scenes of authentication, user-defined function opening and the like using the WIFI wireless 802.11 protocol. When a typical application scene of the vehicle is the off-line configuration of the whole vehicle, WIFI is adopted for the off-line configuration, and the vehicle is subjected to wireless diagnosis and maintenance in a 4S shop.
The vehicle is automatically connected to a wireless network without password verification, whether the vehicle receives a management frame with a subtype of an activation request through the wireless network is judged, and if not, the vehicle normally uses wireless internet service.
If yes, further judging whether the vehicle meets the requirement of the custom rule, and if yes, entering custom modes such as a download configuration mode or an after-sales maintenance mode; if not, the vehicle enters a security defense mode.
Based on the above-mentioned method for configuring the whole vehicle offline based on the wireless protocol, the present application further provides a device for configuring the whole vehicle offline based on the wireless protocol, refer to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the device for configuring the whole vehicle offline based on the wireless protocol, and in this embodiment, the device for configuring the whole vehicle offline based on the wireless protocol may include a communication module 710, a judging module 720 and a functional module 730.
A communication module 710 for automatically connecting the vehicle to a wireless network without password authentication through the communication module;
a judging module 720, configured to judge whether the vehicle receives a management frame with a subtype being an activation request through the wireless network;
and a function module 730, configured to enter a corresponding function mode according to the frame content when the vehicle receives a management frame with a subtype of an activation request through the wireless network, where the function mode includes a offline configuration mode, an after-sales maintenance mode, and a security defense mode.
Based on the above-mentioned method for configuring the entire vehicle offline based on the wireless protocol, the present application further provides an electronic control unit, as shown in fig. 8, and fig. 8 is a schematic structural diagram of an embodiment of the electronic control unit according to the present application. The electronic control unit 800 may comprise a memory 81 and a processor 82, the memory 81 being connected to the processor 82, a computer program being stored in the memory 81, which when executed by the processor 82, implements the method of any of the embodiments described above. The steps and principles of the method are described in detail in the above method, and are not described in detail herein.
In the present embodiment, the electronic control unit 800 (Electronic Control Unit, ECU) is also called "car running computer", "car mounted computer" or the like.
The processor 82 may also be referred to as a CPU (central processing unit ). The processor 82 may be an integrated circuit chip with signal processing capabilities. The processor 82 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Based on the above-mentioned whole car off-line configuration method based on wireless protocol, the application also provides a vehicle, comprising a vehicle body and the above-mentioned electronic control unit.
The application discloses a whole vehicle offline configuration method and device based on a wireless protocol and a vehicle, wherein the whole vehicle offline configuration method based on the wireless protocol comprises the following steps: the vehicle is automatically connected to a wireless network without password verification; judging whether the vehicle receives a management frame with a subtype of an activation request through a wireless network; if the vehicle receives a management frame with the subtype being an activation request through the wireless network, a corresponding functional mode is entered according to the frame content, wherein the functional mode comprises a downlink configuration mode, an after-sales maintenance mode and a security defense mode. Through the mode, the application reserves the design and use of undefined subtype through the management frame, integrates the processes of function starting, safety authentication and the like, reduces the consumption of the computing resource of the vehicle, increases the safety and reduces the management problems caused by presetting authentication information such as passwords or secret keys.
It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. Further, for convenience of description, only some, but not all, of the structures related to the present application are shown in the drawings. The step numbers used herein are also for convenience of description only, and are not limiting as to the order in which the steps are performed. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," and the like in this disclosure are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (9)
1. The whole vehicle offline configuration method based on the wireless protocol is characterized by comprising the following steps of:
the vehicle is automatically connected to a wireless network without password verification;
judging whether the vehicle receives a management frame with a subtype of an activation request through a wireless network;
if the vehicle receives a management frame with a subtype of an activation request through a wireless network, entering a corresponding functional mode according to frame content, wherein the functional mode comprises a offline configuration mode, an after-sale maintenance mode and a security defense mode;
the frame content comprises function activation configuration information and authorization authentication information, and the method for entering the corresponding function mode according to the frame content comprises the following steps:
when the frame content is detected to comprise function activation configuration information and authorization authentication information, entering a downlink configuration mode or an after-sale maintenance mode;
and when the frame content is detected to not comprise authorized authentication information, entering a security defense mode.
2. The method for configuring the entire vehicle offline based on the wireless protocol according to claim 1, wherein after entering the corresponding functional mode according to the frame content, the method further comprises:
the vehicle replies a management frame of subtype activation response through the wireless network to inform the vehicle that verification is completed and relevant functional modes are started.
3. The method for configuring a finished automobile offline based on a wireless protocol according to claim 1, wherein,
the wireless protocol is an 802.11 wireless authentication protocol;
the frame structure of the 802.11 wireless authentication protocol comprises a management frame and frame content;
the management frame is sixteen bits; the frame content is filled with information corresponding to the management frame.
4. The method for configuring the whole vehicle offline based on the wireless protocol according to claim 3, wherein,
the subtypes of the management frame include an activation request, an activation response, a probe request, a probe response, a verification request, a verification response, a connection request, and a connection response.
5. The method for configuring a complete vehicle offline based on a wireless protocol according to claim 4, further comprising:
before the vehicle goes offline, the subtype of the management frame is predefined, and information corresponding to the management frame is filled in the frame content, so that function activation and authorization authentication are realized.
6. The method for configuring a finished automobile offline based on a wireless protocol according to claim 1, wherein,
and if the vehicle receives no management frame with the subtype of the management frame being the activation request through the wireless network, the wireless network is used for realizing the internet service.
7. The utility model provides a whole car configuration device that rolls off production line based on wireless protocol which characterized in that includes:
the communication module is used for automatically connecting the vehicle to a wireless network without password verification through the communication module;
the judging module is used for judging whether the vehicle receives a management frame with a subtype being an activation request through a wireless network;
the function module is used for entering a corresponding function mode according to frame content when the vehicle receives a management frame with a subtype of an activation request through a wireless network, wherein the function mode comprises a offline configuration mode, an after-sale maintenance mode and a security defense mode;
the frame content comprises function activation configuration information and authorization authentication information, and the function module enters a corresponding function mode according to the frame content and comprises the following steps:
when the frame content is detected to comprise function activation configuration information and authorization authentication information, entering a downlink configuration mode or an after-sale maintenance mode;
and when the frame content is detected to not comprise authorized authentication information, entering a security defense mode.
8. An electronic control unit, comprising a memory and a processor, wherein the memory is connected to the processor, and the memory stores a computer program, and the computer program when executed by the processor implements the whole vehicle offline configuration method based on a wireless protocol as set forth in any one of claims 1-6.
9. A vehicle comprising a vehicle body and the electronic control unit of claim 8.
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| CN112637853A (en) * | 2020-12-25 | 2021-04-09 | 杭州涂鸦信息技术有限公司 | Networking and network distribution method and related device |
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