CN106301955B - Message processing method and device - Google Patents
Message processing method and device Download PDFInfo
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- CN106301955B CN106301955B CN201610850774.2A CN201610850774A CN106301955B CN 106301955 B CN106301955 B CN 106301955B CN 201610850774 A CN201610850774 A CN 201610850774A CN 106301955 B CN106301955 B CN 106301955B
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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
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The embodiment of the invention provides a message processing method and a device, wherein the method comprises the following steps: constructing a message, wherein the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message contains a preset key mark; and sending the message to a trackside AP, so that when the trackside AP detects that the message received by the trackside AP contains the preset key mark, the message or data information carried in the message is sent to a specified server for trackside AP abnormal positioning. In the embodiment of the invention, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, thereby being convenient for positioning the abnormal trackside AP.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a packet.
Background
The wireless Mesh (Mesh) network can be applied to trains such as subways, motor cars and the like. As shown in fig. 1, the train networking shown in fig. 1 may be implemented by a wireless Mesh technology. As shown in fig. 1, an onboard AP is deployed in a vehicle, and a plurality of trackside APs, such as trackside AP1, trackside AP2, and trackside AP3, are deployed trackside.
In the process of train moving, the vehicle-mounted AP can establish Mesh connection with the trackside AP to realize train control or provide applications such as monitoring and video. At any moment, the vehicle-mounted AP establishes Mesh connection with one trackside AP. In the networking shown in fig. 1, a Mesh connection is established between a vehicle-mounted AP and a trackside AP1 at the current moment; after the train has traveled some distance, the onboard AP may establish a Mesh connection with the trackside AP 3.
Since rail transit is a dynamic network, all Mesh connections are constantly switched. Moreover, because the running speed of the train is very fast, one trackside AP is switched after dozens of seconds or even seconds. Therefore, when one of the trackside APs to which the onboard AP is connected is abnormal (e.g., failed), a situation may occur in which the communication failure rapidly appears and disappears. Under the circumstance, how to locate the trackside AP abnormality becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention aims to provide a message processing method and a message processing device, which can be used for positioning abnormal trackside AP. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a packet processing method, where the method is applied to a vehicle-mounted access point AP, and the method includes:
constructing a message, wherein the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message contains a preset key mark;
and sending the message to a trackside AP, so that when the trackside AP detects that the message received by the trackside AP contains the preset key mark, the message or data information carried in the message is sent to a specified server for trackside AP abnormal positioning.
In a second aspect, an embodiment of the present invention provides a packet processing method, where the method is applied to a trackside access point AP, and the method includes:
receiving a message from a vehicle-mounted AP;
detecting whether the message contains a preset key mark;
and if so, sending the message or the data information carried in the message to a specified server for performing trackside AP abnormal positioning.
In a third aspect, an embodiment of the present invention provides a packet processing apparatus, where the apparatus is applied to a vehicle-mounted access point AP, and the apparatus includes:
the device comprises a construction module, a transmission module and a processing module, wherein the construction module is used for constructing a message, the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message comprises a preset key mark;
and the sending module is used for sending the message to the trackside AP so that the trackside AP sends the message or data information carried in the message to a specified server for trackside AP abnormal positioning when detecting that the message received by the trackside AP contains the preset key mark.
In a fourth aspect, an embodiment of the present invention provides a packet processing apparatus, where the apparatus is applied to a trackside access point AP, and the apparatus includes:
the receiving module is used for receiving a message from the vehicle-mounted AP;
the detection module is used for detecting whether the message contains a preset key mark;
and the processing module is used for sending the message or the data information carried in the message to a specified server for performing the trackside AP abnormal positioning when the detection result of the detection module is positive.
The embodiment of the invention provides a message processing method and a message processing device, wherein a vehicle-mounted AP (access point) can construct a message containing a preset key mark when the message with a preset key type needs to be constructed on a data link layer of the vehicle-mounted AP, or can mark the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is the preset key attribute, so that the message containing the preset key mark is obtained, and the message can be sent to a trackside AP. When receiving a message containing a preset key mark, the trackside AP can send the message or data information carried in the message to a designated server for trackside AP abnormal positioning. Therefore, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, and further facilitates the positioning of the abnormal trackside AP.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a train network;
fig. 2 is a flowchart of a message processing method according to an embodiment of the present invention;
fig. 3 is another flowchart of a message processing method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a message processing apparatus according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a message processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to position an abnormal trackside AP, embodiments of the present invention provide a message processing method and apparatus.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
An embodiment of the present invention provides a message processing method, which is applied to a vehicle-mounted AP, and as shown in fig. 2, the process may include the following steps:
s201, constructing a message, wherein the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message contains a preset key mark.
In practical application, the vehicle-mounted AP may establish a Mesh connection with the trackside AP to implement train control, or provide applications such as monitoring and video. Specifically, the vehicle-mounted AP may send a message to the trackside AP for data communication. The message sent by the vehicle-mounted AP to the trackside AP may be a message related to communication or a message unrelated to communication.
The message sent by the vehicle-mounted AP to the trackside AP can be a message generated by the vehicle-mounted AP directly on a data link layer of the vehicle-mounted AP; or there may be a message generated by the vehicle-mounted AP on an upper layer of the data link layer, and after reaching the data link layer, a message obtained after performing relevant processing on the data link layer. The upper layer may be a network layer of the vehicle-mounted AP, and the like.
In order to facilitate the positioning of the abnormal trackside AP, it is necessary to collect the key information which is transmitted between the vehicle-mounted AP and the trackside AP and is beneficial to the reason of the abnormal positioning. In the embodiment of the invention, relevant marks can be carried out on important messages (messages playing a key role in positioning abnormal reasons) transmitted to the trackside AP by the vehicle-mounted AP, so that the trackside AP identifies the marked messages and finally reports the marked messages to the specified server for positioning analysis.
The concrete implementation is as follows: the vehicle-mounted AP can construct a message containing a preset key mark when the message with the preset key type needs to be constructed on a data link layer of the vehicle-mounted AP.
Or when the message attribute of the message to be forwarded on the upper layer of the data link layer is the preset key attribute, marking the message to be forwarded on the data link layer to obtain the message containing the preset key mark.
It should be noted that the message including the preset key mark may be a free Address Resolution Protocol (ARP) message, a multicast leave/join message, or a secure handshake message.
And the preset key mark can be positioned in the message header of the message, so that after the trackside AP receives the message, whether the message needs to be reported to the specified server or not can be determined according to the message header without analyzing the message.
S202, the message is sent to the trackside AP, so that when the trackside AP detects that the message received by the trackside AP contains the preset key mark, the message or data information carried in the message is sent to a designated server for trackside AP abnormal positioning.
After the vehicle-mounted AP constructs a message containing the preset key mark, the message can be sent to the trackside AP. After receiving a message sent by a vehicle-mounted AP, a trackside AP can detect whether the message contains a preset key mark, if so, the message is an important message, and the message or data information carried in the message needs to be sent to a specified server for trackside AP abnormal positioning; otherwise, the message is not an important message and does not need to be reported further.
Specifically, the trackside AP may directly send the message to the designated server. Or, in order to reduce the storage pressure of the designated server, the trackside AP may acquire the data information carried in the message, and send the acquired data information to the designated server. Optionally, when the trackside AP acquires the data information carried in the packet and sends the acquired data information to the designated server, the server may further correspondingly store related information of the packet, such as a packet type, so that the designated server may perform trackside AP abnormal positioning according to the data information and the related information.
The subsequent appointed server side collects the information reported by the trackside AP, and the appointed server can analyze all switching actions in the advancing process of the train according to the sequence of the reported information, for example, if multicast joining is lacked, the trackside AP possibly loses the multicast joining message in the switching process, so that the problems of short-time video mosaic and the like are inevitably caused, and the abnormity of the off-track AP is positioned.
The embodiment of the invention provides a message processing method, wherein a vehicle-mounted AP (access point) can construct a message containing a preset key mark when the message with a preset key type needs to be constructed on a data link layer of the vehicle-mounted AP, or can mark the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is the preset key attribute, so that the message containing the preset key mark is obtained, and the message can be sent to a trackside AP. When receiving a message containing a preset key mark, the trackside AP can send the message or data information carried in the message to a designated server for trackside AP abnormal positioning. Therefore, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, and further facilitates the positioning of the abnormal trackside AP.
Fig. 3 shows a process of a message processing method according to an embodiment of the present invention, which is applied to a trackside AP, and the process may include the following steps:
s301, receiving a message from the vehicle-mounted AP.
In practical application, the vehicle-mounted AP may establish a Mesh connection with the trackside AP to implement train control, or provide applications such as monitoring and video. Specifically, the vehicle-mounted AP may send a message to the trackside AP for data communication. Therefore, in the embodiment of the present invention, the trackside AP may receive the message from the vehicle-mounted AP.
The message sent by the vehicle-mounted AP to the trackside AP can be a message generated by the vehicle-mounted AP directly on a data link layer of the vehicle-mounted AP; or there may be a message generated by the vehicle-mounted AP on an upper layer of the data link layer, and after reaching the data link layer, a message obtained after performing relevant processing on the data link layer. The upper layer may be a network layer of the vehicle-mounted AP, and the like.
S302, detecting whether the message contains a preset key mark; if yes, go to step S303; otherwise, the report is not reported to the specified server.
And S303, sending the message or the data information carried in the message to a designated server for performing trackside AP abnormal positioning.
In the embodiment of the present invention, the message may be a free ARP message, a multicast leave/join message, or a secure handshake message, and the preset key mark may be located in a header of the message, so as to represent that the message is an important message and needs to be reported to a specified server.
In addition, in this step, how the vehicle-mounted AP constructs the message, how the trackside AP processes the message, and how the designated server locates the abnormal trackside have been described in the above embodiment of the vehicle-mounted AP side, and details thereof are not described here.
The embodiment of the invention provides a message processing method, when a trackside AP receives a message from a vehicle-mounted AP, whether the message contains a preset key mark or not can be detected, and if yes, the message or data information carried in the message can be sent to a specified server for trackside AP abnormal positioning. Therefore, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, and further facilitates the positioning of the abnormal trackside AP.
Corresponding to the above method embodiment, the embodiment of the present invention also provides a corresponding device embodiment.
Fig. 4 is a message processing apparatus provided in an embodiment of the present invention, where the apparatus is applied to a vehicle-mounted AP, and the apparatus includes:
a constructing module 410, configured to construct a message, where the message is constructed when the vehicle-mounted AP needs to construct a message of a preset key type on a data link layer of the vehicle-mounted AP, or is obtained by marking a message to be forwarded when a message attribute of the message to be forwarded on an upper layer of the data link layer is a preset key attribute, and the message includes a preset key mark;
a sending module 420, configured to send the packet to a trackside AP, so that when detecting that the packet received by the trackside AP contains the preset key mark, the trackside AP sends the packet or data information carried in the packet to a specified server for trackside AP abnormal positioning.
The embodiment of the invention provides a message processing device, wherein a vehicle-mounted AP (access point) can construct a message containing a preset key mark when the message with a preset key type needs to be constructed on a data link layer of the vehicle-mounted AP, or can mark the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is the preset key attribute, so that the message containing the preset key mark is obtained, and the message can be sent to a trackside AP. When receiving a message containing a preset key mark, the trackside AP can send the message or data information carried in the message to a designated server for trackside AP abnormal positioning. Therefore, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, and further facilitates the positioning of the abnormal trackside AP.
Further, the message is an ARP message, a multicast leave/join message, or a secure handshake message.
Further, the preset key mark is located in a header of the packet.
Fig. 5 is a message processing apparatus provided in an embodiment of the present invention, where the apparatus is applied to a trackside AP, and the apparatus includes:
a receiving module 510, configured to receive a message from a vehicle-mounted AP;
a detecting module 520, configured to detect whether the packet includes a preset key flag;
a processing module 530, configured to send the message or the data information carried in the message to a specified server for performing trackside AP exception positioning when the detection result of the detecting module 520 is yes.
The embodiment of the invention provides a message processing device, wherein when receiving a message from a vehicle-mounted AP, a trackside AP can detect whether the message contains a preset key mark, and if so, the trackside AP can send the message or data information carried in the message to a specified server for abnormal positioning of the trackside AP. Therefore, the designated server can obtain the dynamic switching record of the whole train line according to the contents transmitted by the trackside AP, and further facilitates the positioning of the abnormal trackside AP.
Further, the detecting module 520 is specifically configured to detect whether a header of the packet includes a preset key flag.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A message processing method is applied to a vehicle-mounted Access Point (AP), and is characterized by comprising the following steps:
constructing a message, wherein the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message contains a preset key mark;
sending the message to a trackside AP, so that when the trackside AP detects that the message received by the trackside AP contains the preset key mark, the message or data information carried in the message is sent to a specified server for trackside AP abnormal positioning;
and the designated server is used for analyzing all switching actions in the advancing process according to the information reported by the trackside AP and the sequence of the information reported by the trackside AP and positioning the abnormity of the off-track side AP.
2. The method of claim 1, wherein the message is a gratuitous Address Resolution Protocol (ARP) message, a multicast leave/join message, or a secure handshake message.
3. The method of claim 1, wherein the predetermined key tag is located in a header of the packet.
4. A message processing method is applied to a trackside Access Point (AP), and comprises the following steps:
receiving a message from a vehicle-mounted AP;
detecting whether the message contains a preset key mark;
if so, sending the message or the data information carried in the message to a designated server for performing trackside AP abnormal positioning;
and the designated server is used for analyzing all switching actions in the advancing process according to the information reported by the trackside AP and the sequence of the information reported by the trackside AP and positioning the abnormity of the off-track side AP.
5. The method according to claim 4, wherein the detecting whether the packet contains a preset key tag specifically comprises:
and detecting whether a message header of the message contains a preset key mark.
6. A message processing device is characterized in that the device is applied to an on-board Access Point (AP), and the device comprises:
the device comprises a construction module, a transmission module and a processing module, wherein the construction module is used for constructing a message, the message is constructed when the vehicle-mounted AP needs to construct a message with a preset key type on a data link layer of the vehicle-mounted AP, or is obtained after marking the message to be forwarded when the message attribute of the message to be forwarded on the upper layer of the data link layer is a preset key attribute, and the message comprises a preset key mark;
the sending module is used for sending the message to the trackside AP so that the trackside AP sends the message or data information carried in the message to a specified server for trackside AP abnormal positioning when detecting that the message received by the trackside AP contains the preset key mark;
and the designated server is used for analyzing all switching actions in the advancing process according to the information reported by the trackside AP and the sequence of the information reported by the trackside AP and positioning the abnormity of the off-track side AP.
7. The apparatus of claim 6, wherein the message is a gratuitous Address Resolution Protocol (ARP) message, a multicast leave/join message, or a secure handshake message.
8. The apparatus of claim 6, wherein the predetermined key tag is located in a header of the packet.
9. A message processing device is applied to a trackside Access Point (AP), and the device comprises:
the receiving module is used for receiving a message from the vehicle-mounted AP;
the detection module is used for detecting whether the message contains a preset key mark;
the processing module is used for sending the message or the data information carried in the message to a designated server for performing trackside AP abnormal positioning when the detection result of the detection module is positive;
and the designated server is used for analyzing all switching actions in the advancing process according to the information reported by the trackside AP and the sequence of the information reported by the trackside AP and positioning the abnormity of the off-track side AP.
10. The apparatus according to claim 9, wherein the detecting module is specifically configured to detect whether a header of the packet includes a preset key flag.
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