CN113507699B - Information collecting method and vehicle-mounted antenna - Google Patents
Information collecting method and vehicle-mounted antenna Download PDFInfo
- Publication number
- CN113507699B CN113507699B CN202110568989.6A CN202110568989A CN113507699B CN 113507699 B CN113507699 B CN 113507699B CN 202110568989 A CN202110568989 A CN 202110568989A CN 113507699 B CN113507699 B CN 113507699B
- Authority
- CN
- China
- Prior art keywords
- state information
- trackside
- antenna
- vehicle
- mesh
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 10
- 238000012806 monitoring device Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 101710093674 Cyclic nucleotide-gated cation channel beta-1 Proteins 0.000 description 5
- 102100025946 Transforming growth factor beta activator LRRC32 Human genes 0.000 description 5
- 101710169732 Transforming growth factor beta activator LRRC32 Proteins 0.000 description 5
- 238000003881 globally optimized alternating phase rectangular pulse Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
-
- 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
Abstract
The specification provides a method for collecting information and a vehicle-mounted antenna, wherein the method comprises the following steps: and acquiring MESH links of wireless MESH networks established between the MESH links and the trackside antennas, sending an announcement message to the trackside antennas through the MESH links, wherein the announcement message carries an instruction for indicating the trackside antennas to send first state information, receiving a feedback message which is sent by the trackside antennas and carries the first state information of the trackside antennas, acquiring the first state information, acquiring second state information of the wireless MESH networks, setting time stamps for the first state information and the second state information, and storing the time stamps. By the method, the state information of the trackside antenna and the vehicle-mounted antenna can be collected.
Description
Technical Field
The present disclosure relates to the field of wireless communications, and in particular, to a method for collecting information and a vehicle-mounted antenna.
Background
In the conventional Wireless Local Area Network (WLAN) technology, APs are connected through a wired network, and the wired connection determines that the APs in the wireless network still have no mobility, so that the wireless freedom is limited, and in order to solve the problem, a wireless MESH network, namely, a MESH network technology is derived.
As shown in fig. 1, the MESH network technology provides support for AP mobility, and thus, the MESH network technology becomes a major force of a rail transit (subway, etc.) communication technology. Typical rail traffic scenes are subways, motor cars, etc. At present, the MESH technology on the subway is very rapidly applied and developed.
In rail transit, CBTC (train control system based on communication technology) and PIS (a system providing application functions such as monitoring, video, etc.) are two main types of applications. The CBTC is used for train control, has higher requirement on stability of the MESH link, and does not allow the MESH link to be interrupted for more than 2.4 seconds, if the MESH link is interrupted, a control system protection program is triggered to cause emergency stop. The PIS is used for train video and monitoring application, has higher requirements on the bandwidth of the MESH link, and is used for switching between the on-board MP and the off-board MP according to a certain rule in the moving process of the train, wherein one of the on-board MP and the off-board MP is used as a main link, the other is used as a standby link, the main link is degraded into the standby link at proper time (if the signal intensity of the main link is higher than the signal intensity of the main link and reaches a threshold value), and the standby link is upgraded into the main link.
However, the subway environment is complex, the wireless communication of the train and the ground is inevitably failed due to the reasons of weak signal strength, air interface interference, packet loss and the like in the running process of the train, the train and the ground are in emergency stop in CBTC application, the video is in stuck state in PIS application, and maintenance personnel are very difficult to troubleshoot the failure.
Disclosure of Invention
The method can collect the state information of the trackside antenna and the vehicle-mounted antenna in real time, so that the state analysis can be carried out according to the collected information, and the fault can be positioned.
The embodiment of the disclosure provides a method for collecting information, which is applied to a vehicle-mounted antenna and comprises the following steps:
acquiring MESH links of wireless MESH networks established between the MESH links and the trackside antennas;
sending an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to send first state information;
receiving a feedback message carrying first state information of a trackside antenna sent by the trackside antenna, and acquiring the first state information;
and acquiring second state information of the self, setting a time stamp for the first state information and the second state information, and storing the time stamp.
Optionally, before the sending the notification message to the trackside antenna through each MESH link, the method further includes:
and monitoring the link state between the monitoring device and the trackside antenna, and sending an announcement message to the trackside antenna through each MESH link when the monitoring result reaches a preset state.
Optionally, the notification message is a MESH link keep-alive message.
Optionally, the setting a time stamp for the first state information and the second state information and storing the time stamp, includes:
the first state information and the second state information are summarized into total state information, and a time stamp is set for the total state information.
Optionally, the setting a time stamp for the first state information and the second state information and storing the time stamp, includes:
and setting a time stamp for the total state information, and writing the total state information with the time stamp into FLASH for storage.
According to the method, the vehicle-mounted antenna can initiate an acquisition request, acquire the state information of the trackside antenna, timestamp the state information of the vehicle-mounted antenna and the state information of the trackside antenna at the moment and store the state information, and a later-stage manager can perform fault location through the stored state information.
The embodiment of the disclosure also provides a vehicle-mounted antenna, which comprises:
the acquisition module is used for acquiring each wireless MESH network MESH link established between the wireless MESH network MESH link and the trackside antenna;
the transmitting module is used for transmitting an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to transmit the first state information;
the receiving module is used for receiving a feedback message which is sent by the trackside antenna and carries the first state information of the trackside antenna;
the acquisition module is further used for acquiring the first state information and the second state information of the acquisition module from the feedback message;
and the processing module is used for setting a time stamp for the first state information and the second state information and storing the time stamp.
Optionally, the vehicle-mounted antenna further includes: the monitoring module is used for monitoring the link state between the monitoring module and the trackside antenna, and when the monitoring result reaches a preset state, the monitoring module indicates the sending module to send an announcement message to the trackside antenna through each MESH link.
Optionally, the notification message is a MESH link keep-alive message.
Optionally, the processing module is specifically configured to aggregate the first status information and the second status information into total status information, and set a timestamp for the total status information.
Optionally, the processing module is specifically configured to set a timestamp for the total state information, and write the total state information with the timestamp set into the FLASH for storage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the disclosure.
Fig. 2 is a flowchart of a method for collecting information according to an embodiment of the present disclosure.
Fig. 3 is a logic diagram according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present description as detailed in the accompanying claims.
The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present description. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the current rail transit, the subway MESH environment is complex, the abnormal fault of the MESH link communication is multiple-sided, the log information of multiple modules needs to be collected, and the conditions of generating the abnormal communication of the vehicle MP and the trackside MP mainly comprise the following steps:
a: communication abnormality caused by asymmetry of signal intensity, such as that the vehicle-mounted MP considers that the trackside MP signal is strong, but the trackside MP considers that the vehicle-mounted MP signal is weak.
b: the interference in a certain time period in the train running interval causes the increase of the utilization rate of the channel to generate packet loss.
c: the presence of a large number of broadcast messages in the network results in the flooding of normal communication messages.
d: the vehicle-mounted equipment itself works abnormally, such as overhigh equipment temperature, overhigh CPU utilization rate, overlow residual memory and the like.
e: the loss of GARP transmitted by the vehicle MP at the time of link switching causes abnormal downlink data communication.
f: the multicast joining and leaving message is lost, so that the port cannot join the multicast group or leave the multicast group, and finally the vehicle-mounted video is blocked.
The above-described abnormal situation can be recorded by a log, but the large variety of logs causes great trouble to maintenance personnel.
Meanwhile, the vehicle-mounted AP log and the trackside AP log are mutually independent, once a problem occurs, the vehicle-mounted MP and the trackside MP log are required to be combined for common analysis, and the difficulty of maintenance is increased due to the fact that the time alignment of the vehicle-mounted AP and the trackside AP is not accurate enough.
Meanwhile, hundreds of trackside MP can be deployed on each subway line, and a large number of trackside APs collect logs, which is a very huge project.
In order to solve the above technical problems, an embodiment of the present disclosure provides a method for collecting information, as shown in fig. 2, where the method is applied to a vehicle antenna, and the method includes:
s101, acquiring MESH links of wireless MESH networks established between the MESH links and the trackside antennas;
s102, sending an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to send first state information;
s103, receiving a feedback message carrying first state information of a trackside antenna sent by the trackside antenna, and acquiring the first state information;
s104, acquiring second state information of the self, setting a time stamp for the first state information and the second state information and storing the time stamp.
In this embodiment, the vehicle-mounted antenna may be a vehicle-mounted MP (Mesh Point, AP providing Mesh service) deployed on a mobile wireless terminal on a mobile train (subway).
In step S101, the vehicle-mounted antenna (vehicle-mounted MP) may acquire a link existing between the vehicle-mounted antenna (vehicle-mounted MP) and the trackside antenna (trackside MP) according to the link detection message, where the link includes a main link and a standby link.
Before executing step S102, a monitoring result of monitoring a link state with the trackside antenna may be obtained first, and when the monitoring result reaches a preset state, an announcement message is sent to the trackside antenna through each MESH link, where the preset state may be that the link is unstable. Otherwise, step S102 may not be performed, so as not to cause resource waste.
In another embodiment, a switch module may be provided, by which the in-vehicle antenna is controlled to perform step S102.
In this embodiment, by using the existing protocol, the notification message may be a MESH link keep-alive message, and the vehicle antenna may carry an instruction for indicating the trackside antenna to send the first state information in each MESH link keep-alive message (pore request message), so that after the trackside MP receives the keep-alive message, the trackside MP collects the first state information in the trackside MP according to the instruction carried in the keep-alive message.
The instruction may be a vector IE.
The first status information may be pre-agreed by an administrator according to requirements, or the first status information is all real-time status information of the trackside MP.
In one embodiment, the first status information may include one or more of the following combinations, in particular: (the first status information is only exemplified in this embodiment, and the present embodiment is not limited to include other kinds of information
1. Time stamp (time of the diagnostic information generation)
MESH link switching reason (generated only at switching time)
3. Establishing a link MAC address (only recording the MAC address of a trackside MP)
4. Link setup time
MESH Link Signal Strength
CPU utilization
7. Residual memory
8. Channel utilization
9. Total number of messages sent
10 total number of received messages
11. Number of retransmission messages
12. Number of received erroneous packets
13. Number of GARP transmitted
14. Number of received GARP
15. The number of multicast joining and multicast leaving messages sent
16. The number of received multicast joining and leaving messages
In this embodiment, after the trackside antenna acquires its own first state information, step S103 and step S104 may be performed simultaneously, and when step S104 is performed, the second state information of the vehicle-mounted antenna may be acquired by referring to the 1-16 strip type. When fault analysis and positioning are performed, the state information of the vehicle-mounted antenna and the state information of the trackside antenna communicated with the vehicle antenna need to be analyzed at the same time, so that in the embodiment, the first state information and the second state information are acquired and packaged, and the first state information and the second state information can be understood to be summarized into total state information.
The present embodiment provides an example of total status information, specifically as follows:
1. time stamp (time of the diagnostic information generation)
MESH link switching reason (generated only at switching time)
3. Establishing a link MAC address (only recording the MAC address of a trackside MP)
4. Link setup time
MESH Link Signal Strength (both parties)
CPU utilization (both parties)
7. Residual memory (double-side)
8. Channel utilization (both parties, including TX and RX)
9. Total number of messages sent (both parties)
10 total number of received messages (both parties)
11. Retransmission message number (both parties)
12. Number of received erroneous packets (both parties)
13. Number of GARP transmitted (vehicle MP)
14. Number of received GARP (trackside MP)
15. The number of multicast joining and leaving messages sent (vehicle MP)
16. The number of received multicast join and multicast leave messages (trackside MP)
The above-mentioned two antennas refer to a vehicle-mounted antenna (vehicle-mounted MP) and a trackside antenna (trackside MP).
Because the vehicle-mounted antenna interacts with a plurality of trackside antennas in one trip of the train, and in general, when a fault occurs, positioning analysis is performed through a fault time point to obtain a more accurate analysis result, a timestamp can be set on the total state information when the first state information and the second state information are summarized into the total state information.
And stores the total state information with the time stamp set.
In this embodiment, when the total state information is stored, the total state information may be written into the FLASH for storage.
Because of the limited space of FLASH, when the total state information is written into FLASH, the historical state information of the FLASH which has overtime can be deleted.
According to the embodiment, the vehicle-mounted antenna is utilized to send the instruction to the trackside antenna, so that the state information of the trackside antenna communicated with the vehicle-mounted antenna and the state information of the vehicle-mounted antenna can be obtained in real time and stored, and an operator can perform fault analysis and positioning according to the stored state information, so that the problem of difficulty in positioning in the prior art is solved.
According to the above embodiment, the present disclosure provides a flowchart for implementing the method in the present disclosure, as shown in fig. 3, the vehicle-mounted MP obtains the status information of the trackside MP that communicates with the vehicle-mounted MP through the link keep-alive message carrying the VENDOR IE instruction, and stores the obtained status information.
The embodiment of the disclosure also provides a vehicle-mounted antenna, which comprises:
the acquisition module is used for acquiring each wireless MESH network MESH link established between the wireless MESH network MESH link and the trackside antenna;
the transmitting module is used for transmitting an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to transmit the first state information;
the receiving module is used for receiving a feedback message which is sent by the trackside antenna and carries the first state information of the trackside antenna;
the acquisition module is further used for acquiring the first state information and the second state information of the acquisition module from the feedback message;
and the processing module is used for setting a time stamp for the first state information and the second state information and storing the time stamp.
Optionally, the vehicle-mounted antenna further includes: the monitoring module is used for monitoring the operation of the device,
the monitoring module is used for monitoring the link state between the monitoring module and the trackside antenna, and when the monitoring result reaches a preset state, the sending module is instructed to send an announcement message to the trackside antenna through each MESH link.
Optionally, the notification message is a MESH link keep-alive message.
Optionally, the processing module is specifically configured to aggregate the first status information and the second status information into total status information, and set a timestamp for the total status information.
Optionally, the processing module is specifically configured to set a timestamp for the total state information, and write the total state information with the timestamp set into the FLASH for storage.
The foregoing describes specific embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It is to be understood that the present description is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. A method of collecting information, the method being applied to an in-vehicle antenna, the method comprising:
acquiring MESH links of wireless MESH networks established between the MESH links and the trackside antennas;
sending an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to send first state information;
receiving a feedback message carrying first state information of a trackside antenna sent by the trackside antenna, and acquiring the first state information;
and acquiring second state information of the self, setting a time stamp for the first state information and the second state information, and storing the time stamp.
2. The method of claim 1, wherein prior to said sending the advertisement message to the trackside antenna over each MESH link, the method further comprises:
and monitoring the link state between the monitoring device and the trackside antenna, and sending an announcement message to the trackside antenna through each MESH link when the monitoring result reaches a preset state.
3. The method of claim 1, wherein the advertisement message is a MESH link keep-alive message.
4. The method of claim 1, wherein said time stamping and storing said first status information and said second status information comprises:
the first state information and the second state information are summarized into total state information, and a time stamp is set for the total state information.
5. The method of claim 4, wherein said time stamping and storing said first status information and said second status information comprises:
and setting a time stamp for the total state information, and writing the total state information with the time stamp into FLASH for storage.
6. A vehicle-mounted antenna, characterized in that it comprises:
the acquisition module is used for acquiring each wireless MESH network MESH link established between the wireless MESH network MESH link and the trackside antenna;
the transmitting module is used for transmitting an announcement message to the trackside antennas through each MESH link, wherein the announcement message carries an instruction for indicating the trackside antennas to transmit the first state information;
the receiving module is used for receiving a feedback message which is sent by the trackside antenna and carries the first state information of the trackside antenna;
the acquisition module is further used for acquiring the first state information and the second state information of the acquisition module from the feedback message;
and the processing module is used for setting a time stamp for the first state information and the second state information and storing the time stamp.
7. The vehicle-mounted antenna of claim 6, further comprising: the monitoring module is used for monitoring the operation of the device,
the monitoring module is used for monitoring the link state between the monitoring module and the trackside antenna, and when the monitoring result reaches a preset state, the sending module is instructed to send an announcement message to the trackside antenna through each MESH link.
8. The vehicle antenna of claim 6, wherein the advertisement message is a MESH link keep-alive message.
9. The vehicle antenna according to claim 6, wherein,
the processing module is specifically configured to aggregate the first status information and the second status information into total status information, and set a timestamp for the total status information.
10. The vehicle antenna of claim 9, wherein the antenna is configured to,
the processing module is specifically configured to set a time stamp for the total state information, and write the total state information with the set time stamp into the FLASH for storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568989.6A CN113507699B (en) | 2021-05-25 | 2021-05-25 | Information collecting method and vehicle-mounted antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568989.6A CN113507699B (en) | 2021-05-25 | 2021-05-25 | Information collecting method and vehicle-mounted antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113507699A CN113507699A (en) | 2021-10-15 |
| CN113507699B true CN113507699B (en) | 2023-11-03 |
Family
ID=78008597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110568989.6A Active CN113507699B (en) | 2021-05-25 | 2021-05-25 | Information collecting method and vehicle-mounted antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113507699B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100073861A (en) * | 2008-12-23 | 2010-07-01 | 유원선 | Apparatus for automatic train control in auto train controlling system and method of motion proccessing thereof |
| CN101917749A (en) * | 2010-08-17 | 2010-12-15 | 杭州华三通信技术有限公司 | Method and device for realizing channel dynamic handoff in train communication system |
| CN104883697A (en) * | 2015-04-20 | 2015-09-02 | 北京全路通信信号研究设计院有限公司 | Train-ground wireless communication system performance simulation method and train-ground wireless communication system performance simulation system |
| WO2019137154A1 (en) * | 2018-01-09 | 2019-07-18 | 比亚迪股份有限公司 | Train-ground wireless integrated bearing system and method employing lte-u |
-
2021
- 2021-05-25 CN CN202110568989.6A patent/CN113507699B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100073861A (en) * | 2008-12-23 | 2010-07-01 | 유원선 | Apparatus for automatic train control in auto train controlling system and method of motion proccessing thereof |
| CN101917749A (en) * | 2010-08-17 | 2010-12-15 | 杭州华三通信技术有限公司 | Method and device for realizing channel dynamic handoff in train communication system |
| CN104883697A (en) * | 2015-04-20 | 2015-09-02 | 北京全路通信信号研究设计院有限公司 | Train-ground wireless communication system performance simulation method and train-ground wireless communication system performance simulation system |
| WO2019137154A1 (en) * | 2018-01-09 | 2019-07-18 | 比亚迪股份有限公司 | Train-ground wireless integrated bearing system and method employing lte-u |
Non-Patent Citations (2)
| Title |
|---|
| 列控车载设备故障模型分析及探讨;王青亮;张杰;;科技资讯(第21期);全文 * |
| 轨道交通车地无线传输系统原理分析和说明;李娜;赵豆;;工业仪表与自动化装置(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113507699A (en) | 2021-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10050827B2 (en) | Method and apparatus for monitoring connectivity in a long term evolution network | |
| EP3282744B1 (en) | Enhanced network performance monitoring | |
| CN101483570B (en) | Method, system and device for preventing looped network temporary loop circuit of relaying link | |
| CN105704740A (en) | Train vehicle-ground communication network system | |
| CN110177008B (en) | Railway service call fault detection method and device | |
| KR20190065929A (en) | Method and apparatus for transmitting data in system | |
| CN101340346A (en) | Ring control method and apparatus of Ethernet looped network system | |
| CN110381587A (en) | A kind of method and device that wave beam restores | |
| US2250950A (en) | Relay system monitoring | |
| CN107800566B (en) | LTE-R railway special broadband mobile communication network interface monitoring system | |
| CN106921473B (en) | Data transmission method of rail transit wireless local area network and related equipment | |
| WO2013086948A1 (en) | Method, system and device for measuring uplink interference | |
| CN113507699B (en) | Information collecting method and vehicle-mounted antenna | |
| US20060034203A1 (en) | Mobile communication system and service control device | |
| CN109039768B (en) | CBTC signal warning method in LTE-M communication network | |
| US8194591B2 (en) | Communication methods in a network | |
| CN114978754B (en) | TSN anomaly detection method and system | |
| CN107347014B (en) | Network fault detection method and system | |
| CN1817002B (en) | Improvements in or relating to communication systems | |
| CN109005553B (en) | In-system maintenance method based on LTE bearing CBTC service | |
| JPH11205346A (en) | Remote maintenance management system | |
| CN107708143B (en) | Wireless router group management method and system | |
| Xu et al. | Field-trial of the recovery of fiber networks C/M-plane via an IoT-based narrow-band and lossy links system (FRENLL) | |
| CN113596067A (en) | Vehicle-mounted passenger information system | |
| EP2073590B1 (en) | Communication method in a network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |