CN115866663A - Method and system for testing subway wireless network service quality - Google Patents
Method and system for testing subway wireless network service quality Download PDFInfo
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Abstract
The invention provides a method and a system for testing subway wireless network service quality, which are used for urban rail signal detection and comprise the following steps: on-vehicle existing equipment still includes: the system comprises m detection devices, a detection and storage industrial personal computer, a control terminal and a communication detection intranet switch; the communication detection intranet switch is used for communicating with an intranet of the detection equipment and providing communication service to enable the control terminal to control the detection equipment to work; the detection and storage industrial personal computer is used for detecting data communicated in the communication detection intranet switch and temporarily storing the data; the m detection devices are used for detecting urban rail wireless communication signals in parallel; wherein, on-vehicle existing equipment detects intranet switch signal connection with check out test set and communication. The invention is specially customized for the subway application environment, has the capability of not depending on the precise time synchronization and GIS information of a GPS, has simple and convenient system operation, high automation degree, flexible private network access mode and centralized playback of various detection results.
Description
Technical Field
The invention belongs to the field of wireless communication networks, and particularly relates to a method and a system for testing the service quality of a subway wireless network.
Background
In the field of wireless communication, a frequency scanner is an important testing tool for telecom operators/equipment providers to work on wireless base station construction, network optimization and the like. The frequency sweep instrument is frequency sweep receiving equipment for acquiring wireless air interface signals at high precision and high speed, and can receive wireless signals in a frequency sweep mode and output main parameters such as RSRP, SINR, RSRI, RSRQ and the like in the frequency sweep mode. Meanwhile, the frequency scanner has a frequency spectrum analysis function, measures the signal power of the specified frequency band, displays the measurement result in the forms of a two-dimensional spectrogram, a three-dimensional spectrogram, a sampling point signal intensity locus diagram and the like, has the functions of test data playback and derivation, is equipped with a professional data analysis platform, and has very strong data analysis capability. However, when a sweep generator is used to perform work tests such as wireless base station construction and network optimization on a train running at a high speed, the following limitations exist: 1. high speed mobility is not supported: the detection equipment of the urban railway vehicle is generally placed in a head car of the railway vehicle, commonly called as a TC1 carriage, and the space suitable for installation of the detection equipment in the head car is mainly 8 seat equipment cabinets below a seat. The three-dimensional space size of the seat equipment cabinet is 480 × 280 × 220 (mm), the space is limited, the overall dimension of a common sweep generator on the market is much larger than that of the seat cabinet, the sweep generator mainly has depth, the sweep generator cannot be installed in the seat cabinet in a wall hanging or guide rail mode, and stable operation cannot be guaranteed on a high-speed moving train. 2. Industrial level reliability is not supported: different from a common network machine room or a laboratory, a train head carriage is a severe environment with high vibration, high dust, extremely low or extremely high temperature and the like, belongs to an industrial-grade operation environment, and a sweep generator cannot adapt to long-term stable operation in the environment. 3. Closed software platform: the frequency scanner is a special hardware device, and data display is performed on a terminal display screen or a PC through a data analysis platform. Although the frequency scanner can collect network service quality and field intensity data, the data definition and data display logic of the frequency scanner or the data definition and data display logic of the frequency scanner are defined in advance by an equipment original factory, and if an owner wants to change/customize the frequency scanner to match with a service scene of an urban rail wireless network, the support of the equipment original factory is difficult to obtain.
It is important to understand that those skilled in the art need to invent a new method and system for testing the operation of wireless base station construction and network optimization.
Disclosure of Invention
In view of the above, the present invention provides a method and a system for testing the service quality of a subway wireless network, so as to solve the above problems in the prior art.
In order to achieve the technical purpose, the invention discloses the following technical contents:
a system for testing subway wireless network service quality, comprising: on-vehicle existing equipment still includes: the system comprises m detection devices, a detection and storage industrial personal computer, a control terminal and a communication detection intranet switch;
the communication detection intranet switch is used for communicating with the intranet of the detection equipment and providing communication service to enable the control terminal to control the detection equipment to work;
the detection and storage industrial personal computer is used for detecting the data communicated in the communication detection intranet switch and temporarily storing the data;
the m detection devices are used for detecting urban rail wireless communication signals in parallel;
and the vehicle-mounted existing equipment is in signal connection with the detection equipment and the communication detection intranet switch.
Preferably, each of the detection devices includes 1 to n wireless access modules;
and the wireless access module is connected with the antenna of the vehicle-mounted existing equipment based on the contained wireless communication type.
Preferably, the detection device comprises: a field intensity detection industrial personal computer and a service quality detection industrial personal computer;
the field intensity detection industrial personal computer and the service quality detection industrial personal computer are in communication connection with the communication detection intranet switch;
and the field intensity detection industrial personal computer is matched with the service quality detection industrial personal computer to carry out concurrent testing.
Preferably, the method further comprises the following steps: the network server is matched with the service quality detection industrial control machine;
and the network server is in network connection with the service quality detection industrial personal computer and is used for assisting the service quality detection industrial personal computer in carrying out test work.
Preferably, the vehicle-mounted existing device comprises a vehicle-mounted access unit TAU and a private network antenna;
the vehicle-mounted access unit TAU is in communication connection with an LTE-M wireless access module and a WLAN wireless access module in the detection equipment, and the private network antenna is in communication connection with a radio frequency module in the detection equipment, so that the subway wireless private network is indirectly accessed.
Preferably, the vehicle-mounted existing device comprises a private network antenna;
the private network antenna is in communication connection with the radio frequency module, the LTE-M wireless access module and the WLAN wireless access module in the detection equipment and is used for directly accessing a subway wireless private network.
Preferably, the control terminal adopts a space-time synchronization system to perform space-time synchronization control on the work of the detection equipment;
the space-time synchronization system is configured by a detection vehicle standard, is accessed to an internal network of the detection vehicle, and regularly and uniformly sends information to each detection module by using a broadcasting mode.
A method for testing subway wireless network service quality comprises the following steps:
acquiring a detection requirement;
generating a starting parameter based on the detection requirement, and generating 1 to a plurality of detection subtasks according to the starting parameter;
performing parallel detection on a plurality of detection subtasks;
executing the detection subtask, and judging whether an early termination instruction is received or not;
if so, temporarily storing a detection record and completing the detection subtask; if not, temporarily storing a detection record, setting the detection duration of the detection subtask according to actual requirements, and detecting whether the detection subtask reaches the detection duration or not based on the detection duration; if the detection result is negative, re-executing the detection subtask; if the detection result is yes, the detection subtask is completed;
and completing a plurality of detection subtasks, and updating the state of the detection project.
Preferably, the detecting the task type of the subtask includes: field intensity detection and quality of service detection.
Compared with the prior art, the invention has the following beneficial effects:
in a subway environment, a GPS no-signal is in a normal state, and the system has the capability of not depending on the accurate synchronization time of the GPS and GIS information; the centralized control of a plurality of test tasks can flexibly define various test combinations and flexibly define the triggering conditions of starting/ending tests; the method supports unattended silent testing and remote one-key testing; the method provides a direct and indirect access subway wireless private network scheme, simplifies the deployment difficulty and reduces the operation risk; the accurate synchronization, the same-screen playback and the same-screen comparison of various service quality detection results and field intensity detection results are realized in time and space, the multi-system switching is not needed, and the process of troubleshooting interference sources/fault sources can be greatly simplified.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a flow chart of the method of the present invention;
FIG. 3 is a schematic view of an installation location of the present invention in an application scenario of an embodiment;
FIG. 4 is a flow chart of the implementation of the spatio-temporal synchronization system of the present invention.
Detailed Description
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
A system for testing subway wireless network service quality, comprising: on-vehicle existing equipment, its characterized in that still includes: the system comprises m detection devices, a detection and storage industrial personal computer, a control terminal and a communication detection intranet switch;
the communication detection intranet switch is used for communicating with the intranet of the detection equipment and providing communication service to enable the control terminal to control the detection equipment to work;
the detection and storage industrial personal computer is used for detecting the data communicated in the communication detection intranet switch and temporarily storing the data;
the m detection devices are used for detecting urban rail wireless communication signals in parallel;
and the vehicle-mounted existing equipment is in signal connection with the detection equipment and the communication detection intranet switch.
Specifically, the method comprises the following steps:
in this embodiment, each of the detection devices includes 1 to n wireless access modules; in addition, m is less than or equal to 5 in the embodiment;
and the wireless access module is connected with the antenna of the vehicle-mounted existing equipment based on the contained wireless communication type.
In order to realize a flexible private network access mode, the embodiment provides a scheme for directly and indirectly accessing a subway wireless private network, thereby simplifying the deployment difficulty and reducing the operation risk; (1) indirectly accessing a subway wireless private network: the vehicle-mounted existing equipment comprises a vehicle-mounted access unit TAU and a private network antenna; the vehicle-mounted access unit TAU is in communication connection with an LTE-M wireless access module and a WLAN wireless access module in the detection equipment, and the private network antenna is in communication connection with a radio frequency module in the detection equipment, so that the subway wireless private network is indirectly accessed. (2) direct access to a subway wireless private network: the vehicle-mounted existing equipment comprises a private network antenna; the private network antenna is in communication connection with the radio frequency module, the LTE-M wireless access module and the WLAN wireless access module in the detection equipment and is used for directly accessing a subway wireless private network. Further, in the present embodiment, the vehicle-mounted existing apparatus includes: the train positioning system comprises a private network antenna, a train time service system, a vehicle-mounted access unit TAU and a train positioning identification system PTI; the train time service system and the train positioning identification system PTI are in signal connection with the communication detection intranet switch and receive control of the control terminal.
In this embodiment, the detection device includes: a field intensity detection industrial personal computer and a service quality detection industrial personal computer;
the field intensity detection industrial personal computer and the service quality detection industrial personal computer are in communication connection with the communication detection intranet switch;
and the field intensity detection industrial personal computer is matched with the service quality detection industrial personal computer to carry out concurrent testing. Further, in this embodiment, the qos detection types include: LET-M, WLAN/WIFI, 5G, EUHT; it should be noted that, in practical applications, the type of the quality of service detection is not limited to the disclosure in the embodiment. The field intensity detection type in this embodiment: LET-M/WLAN, the field strength detection type is not limited to the disclosure in this embodiment when it is actually used. Each service quality detection industrial personal computer or the field intensity detection industrial personal computer comprises 1 to n wireless access modules.
In this embodiment, the method further includes: the network server is matched with the service quality detection industrial control machine; the network server is installed in an IDC machine room and is divided into a private network LET-M machine room, a WLAN machine room and various civil machine rooms according to different detection items.
And the network server is in network connection with the service quality detection industrial personal computer and is used for assisting the service quality detection industrial personal computer in carrying out test work.
The control terminal adopts a time-space synchronization system to carry out time-space synchronization control on the work of the detection equipment;
the space-time synchronization system is configured by a detection vehicle standard, is accessed to an internal network of the detection vehicle, and regularly and uniformly sends information to each detection module by using a broadcasting mode. Meanwhile, in order to realize the centralized playback of various detection results, the accurate synchronization, the same-screen playback and the same-screen comparison of various service quality detection results and field intensity detection results are realized in the time and space in the embodiment, the multi-system switching is not needed, and the process of troubleshooting interference sources/fault sources can be greatly simplified.
In addition, in this embodiment, the system hardware configuration parameters are: (the vehicle-mounted equipment is a corresponding industrial personal computer and a corresponding switch which pass the subway security certification standard):
1.1, the field intensity detection vehicle-mounted industrial personal computers of the LTE-M private network comprise i7-6822EQ,16G,256GSSD 2, RAID1, double-thousand MM12 network cards, nvidia A2000MXM,4G display cards and HackRFOne. In the embodiment, the field intensity detection vehicle-mounted industrial personal computer of the LTE-M private network supports index data demodulation, cell decoding and frequency spectrum data acquisition of a specified frequency band; the method supports the separation and collection of TDD uplink and downlink data under the scene without GPS; supporting the frequency spectrum data cleaning, merging, compressing and storing; and responding to the command of the communication detection integrated control system, and executing corresponding detection operation according to the command.
1.2 field intensity detection vehicle-mounted industrial personal computers of the WLAN private network, i7-6822EQ, 1lg, 256GSSD x 2, RAID1, double-thousand-MM 12 network cards, nvidia A2000MXM,4G display cards and HackRFone. In the embodiment, the field intensity detection vehicle-mounted industrial personal computer of the WLAN private network supports spectrum data collection of a designated frequency band of the WLAN private communication network; the log data acquisition and analysis of the WLAN switch are supported; supporting the cleaning, merging, compressing and storing of frequency spectrum data; and responding to the command of the communication detection integrated control system, and executing corresponding detection operation according to the command.
An LTE-M/WLAN/5G/WIFI/EUHT service quality detection vehicle-mounted industrial personal computer comprises an i5-6422EQ, an 8G, a 256GSSD 2, a RAID1, a double-thousand MM12 network card, a2 SIM, a 2PCI-E and a 3 USBLTE-M/5G/WIFI/WLAN/EUHT module. In the embodiment, the vehicle-mounted industrial personal computer for detecting the service quality supports that 5 network systems such as LTE-M/WLAN/5G/WIFI/EUHT and the like simultaneously carry out service quality detection; the service quality indexes such as connection success rate, connection delay, data transmission success rate, data transmission delay and the like are supported; and responding to the command of the communication detection integrated control system, and executing corresponding detection operation according to the command.
1.4. And the temporary server vehicle-mounted industrial personal computers are i5-6422EQ,8G,1TSSD 4, RAID10 and double-thousand MM12 network cards. In the embodiment, the temporary server vehicle-mounted industrial personal computer supports local detection and debugging, including detection configuration, detection start/stop, detection record playback; temporarily storing the detection data; the docking of a vehicle-mounted comprehensive data system is supported, and the docking of an object model (= > (Sagitar OS cloud) interface is realized; analyzing a space-time synchronous instruction, detecting a data space-time mark, and executing corresponding detection operation according to the instruction; the data storage of continuous 48-hour or 1000KM communication detection is satisfied.
1.5. The vehicle-mounted intranet switch comprises an M12 interface, a full-bridge M switch and 8 power ports (12 POEs (power over Ethernet) support and 4 bypass support).
The LET-M private network QoS server is arranged in a special machine room of the LTE-M private network; 1U Server E-2124/16G 2/2 TSATA/four-port gigabit/400W.
1.7, the WLAN private network QoS server is arranged in a special machine room of the LTE-M private network; 1U Server E-2124/16G 2/2 TSATA/four-port gigabit/400W.
Example 2
A method for testing subway wireless network service quality comprises the following steps:
acquiring a detection requirement;
generating starting parameters based on the detection requirements, and generating 1 to a plurality of detection subtasks according to the starting parameters;
performing parallel detection on a plurality of detection subtasks;
executing the detection subtask, and judging whether an early termination instruction is received or not;
if yes, temporarily storing the detection record, and completing the detection subtask; if not, temporarily storing a detection record, setting the detection duration of the detection subtask according to actual requirements, and detecting whether the detection subtask reaches the detection duration or not based on the detection duration; if the detection result is negative, re-executing the detection subtask; if the detection result is yes, the detection subtask is completed;
and completing a plurality of detection subtasks, and updating the state of the detection project.
Specifically, the method comprises the following steps:
the application scenario of the embodiment is a communication detection method in the project of the Guangzhou subway 11 # line active operation and maintenance method.
The communication detection method adopts the mode of the split industrial personal computer of each system disclosed by the embodiment to detect the line wireless communication signal, and can realize the detection of the field intensity of the LTE-M/WLAN, the electromagnetic environment and the detection of the WLAN/LTE-M/5G/EUHT/WIFI service quality.
The detection method hardware consists of communication detection equipment and a communication detection method switch, and the communication detection equipment is multiplexed with the existing LTE-M/WLAN communication antenna in the vehicle, and the antenna of the detection equipment is used for testing a civil network and the like. The method comprises the steps of processing and storing data, displaying GIS graphs and counting the data after receiving wireless signals through the antenna.
The detection equipment, the communication detection subsystem switch and the communication detection storage server are arranged below a subway seat cabinet, the private network system antenna is shared with the vehicle, and the civil network antenna is arranged on the service quality detection equipment.
Vehicle-mounted detection equipment installation description:
(1) Detection device
The detection equipment refers to an LTE-M vehicle-mounted field intensity detection industrial personal computer, a WLAN vehicle-mounted field intensity detection industrial personal computer and a service quality detection industrial personal computer (LTE-M/WLAN/5G/EUHT/WIFI). The industrial personal computers are arranged in the seat cabinets, each seat cabinet corresponds to one seat cabinet, about 2U of space is occupied, 3 seats are occupied, and 6U of space is occupied in total; specifically, in this embodiment, the detection apparatus is used as a main apparatus for executing the detection subtask, and is configured to receive the detection task, execute the detection task according to the detection configuration, store the detection data, and update the detection operation state in real time. In this embodiment, the detecting the task type of the subtask includes: field strength detection and quality of service detection.
(2) Temporary storage industrial personal computer also called temporary storage server
The occupied space is 2U, the machine type is not limited, the machine type is connected into a switchboard through six types of network cables, and the remaining disk space every day is not less than 1T; the communication detection storage server is realized in the form of an industrial personal computer. Specifically, the method comprises the following steps: in this embodiment, the temporary storage industrial personal computer is used for receiving an operation instruction, generating a detection task, dispatching the detection task, controlling a detection operation state, inquiring detection data, configuring detection parameters, and exporting/backing up the detection data; and storing various data in a classified manner according to the performance indexes and the functional requirements, and providing a function of backing up historical data to a temporary server.
(3) Communication detection intranet switch
The occupied space is about 1.5U, the communication detection intranet switch is installed on the seat cabinet on the other side, and an M12 interface is connected through six types of network cables;
(4) LTE-M/WLAN antenna
Multiplexing the existing antenna on the roof. Providing an N-type or SMA-type antenna interface connected with an LTE-M/WLAN antenna on the train at the installation position of the detection equipment;
(5) Train time service and positioning interface
An interface is provided for a subway party, and a detection system is adapted;
(6) WLAN detection interface requirements
(1) Console: the system is used for checking the switch log in real time, a vehicular WLAN switch Console logical interface needs to be reserved, and a communication detection subsystem interface needs to be a (DB 9) port or an M12 interface;
(2) train receiving WLAN Ethernet port: when the system is used for service quality testing, an Ethernet port of the vehicle-mounted WLAN switch needs to be reserved, and an interface of the communication detection subsystem needs to be an M12 interface.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A system for testing subway wireless network service quality, comprising: on-vehicle existing equipment, its characterized in that still includes: the system comprises m detection devices, a detection and storage industrial personal computer, a control terminal and a communication detection intranet switch;
the communication detection intranet switch is used for communicating with the intranet of the detection equipment and providing communication service to enable the control terminal to control the detection equipment to work;
the detection and storage industrial personal computer is used for detecting the data communicated in the communication detection intranet switch and temporarily storing the data;
the m detection devices are used for detecting urban rail wireless communication signals in parallel;
the vehicle-mounted existing equipment is in signal connection with the communication detection intranet switch; and the detection equipment is in signal connection with the communication detection intranet switch.
2. A system for testing the service quality of a subway wireless network as claimed in claim 1, wherein each of said detection devices includes 1 to n wireless access modules;
and the wireless access module is connected with the antenna of the vehicle-mounted existing equipment based on the contained wireless communication type.
3. A system for testing the service quality of a subway wireless network as claimed in claim 1, wherein said detection equipment comprises: a field intensity detection industrial personal computer and a service quality detection industrial personal computer;
the field intensity detection industrial personal computer and the service quality detection industrial personal computer are in communication connection with the communication detection intranet switch;
and the field intensity detection industrial personal computer is matched with the service quality detection industrial personal computer to carry out concurrent testing.
4. The system for testing the service quality of the subway wireless network as claimed in claim 1, further comprising: the network server is matched with the service quality detection industrial control machine;
and the network server is in network connection with the service quality detection industrial personal computer and is used for assisting the service quality detection industrial personal computer in carrying out test work.
5. A system for testing the service quality of a subway wireless network as claimed in claim 2, wherein said vehicle-mounted existing device includes a vehicle-mounted access unit TAU, a private network antenna;
the vehicle-mounted access unit TAU is in communication connection with an LTE-M wireless access module and a WLAN wireless access module in the detection equipment, and the private network antenna is in communication connection with a radio frequency module in the detection equipment, so that the subway wireless private network is indirectly accessed.
6. A system for testing the service quality of a subway wireless network as claimed in claim 2, wherein said existing vehicle-mounted equipment includes a private network antenna;
the private network antenna is in communication connection with the radio frequency module, the LTE-M wireless access module and the WLAN wireless access module in the detection equipment and is used for directly accessing a subway wireless private network.
7. A system for testing the service quality of a subway wireless network as claimed in claim 1, wherein said control terminal uses a space-time synchronization system to perform space-time synchronization control on the operation of the detection device;
the space-time synchronization system is configured by a detection vehicle standard, is accessed to an internal network of the detection vehicle, and regularly and uniformly sends information to each detection module by using a broadcasting mode.
8. A method for testing the service quality of a subway wireless network is characterized by comprising the following steps:
acquiring a detection requirement;
generating a starting parameter based on the detection requirement, and generating 1 to a plurality of detection subtasks according to the starting parameter;
performing parallel detection on a plurality of detection subtasks;
executing the detection subtask, and judging whether an early termination instruction is received or not;
if so, temporarily storing a detection record and completing the detection subtask; if not, temporarily storing a detection record, setting the detection duration of the detection subtask according to actual requirements, and detecting whether the detection subtask reaches the detection duration or not based on the detection duration; if the detection result is negative, re-executing the detection subtask; if the detection result is yes, the detection subtask is completed;
and completing a plurality of detection subtasks, and updating the state of the detection project.
9. The method for testing the service quality of the subway wireless network as claimed in claim 8, wherein said detecting the task type of the subtask comprises: field intensity detection and quality of service detection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211474790.8A CN115866663A (en) | 2022-11-23 | 2022-11-23 | Method and system for testing subway wireless network service quality |
| PCT/CN2022/134679 WO2024108613A1 (en) | 2022-11-23 | 2022-11-28 | Method and system for testing quality of service of subway wireless network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211474790.8A CN115866663A (en) | 2022-11-23 | 2022-11-23 | Method and system for testing subway wireless network service quality |
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| Publication Number | Publication Date |
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| CN115866663A true CN115866663A (en) | 2023-03-28 |
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| CN202211474790.8A Pending CN115866663A (en) | 2022-11-23 | 2022-11-23 | Method and system for testing subway wireless network service quality |
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| Country | Link |
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| CN (1) | CN115866663A (en) |
| WO (1) | WO2024108613A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202395799U (en) * | 2011-12-14 | 2012-08-22 | 武汉烽火信息集成技术有限公司 | Comprehensive monitoring system of urban railway traffic signals |
| CN105722130A (en) * | 2016-02-04 | 2016-06-29 | 中国科学院上海高等研究院 | Method and system for monitoring Metro AP (Access Point) equipment |
| CN106960285B (en) * | 2017-04-01 | 2021-01-08 | 北京交通大学 | Subway train operation service quality detection device and method |
| CN208171235U (en) * | 2018-04-18 | 2018-11-30 | 上海工程技术大学 | A kind of underground railway track detection device |
| US11965952B2 (en) * | 2018-11-28 | 2024-04-23 | Metrom Rail, Llc | Methods and systems for ultra-wideband (UWB) based subway personnel detection |
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2022
- 2022-11-23 CN CN202211474790.8A patent/CN115866663A/en active Pending
- 2022-11-28 WO PCT/CN2022/134679 patent/WO2024108613A1/en unknown
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| WO2024108613A1 (en) | 2024-05-30 |
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