CN112468998A - Wireless communication network energy-saving method, system, electronic equipment and storage medium - Google Patents
Wireless communication network energy-saving method, system, electronic equipment and storage medium Download PDFInfo
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a wireless communication network energy-saving method, a system, electronic equipment and a storage medium, wherein the method comprises the following steps: dividing a plurality of holding poles which are continuously arranged into a super cell; at the same time, default control is carried out to start the communication equipment on the first holding pole and the last holding pole in each super cell; and controlling to open or close the communication equipment on other holding poles in the super cell according to whether the train exists in the super cell. The scheme can dynamically configure the opening and closing of the base station according to the running condition of the train, thereby greatly reducing the energy consumption of the wireless communication network.
Description
Technical Field
The present invention relates to the field of communications network technologies, and in particular, to a method, a system, an electronic device, and a storage medium for saving energy in a wireless communications network.
Background
The wireless network refers to a network that can interconnect various communication devices without wiring. Wireless networking technologies cover a wide range of technologies, including both global voice and data networks that allow users to establish long-range wireless connections, and infrared and radio frequency technologies optimized for short-range wireless connections. Wireless networks can be classified into wireless wide area networks, wireless local area networks, wireless metropolitan area networks, wireless personal area networks, and the like, depending on the coverage of the network. With the development of wireless communication networks, great convenience is brought to people's lives, and the wireless communication networks are developed in urban environments and can be conveniently accessed to the wireless communication networks on high-speed rails.
Along a high-speed rail private network, base station equipment generally needs to be in a working state continuously, but a train may pass through the base station equipment at a Long interval, which often causes huge resource waste, and particularly, with the deployment of an NR (5G New Radio, 5G New Radio access technology) network, the power consumption of the network may be doubled compared with that of an LTE (Long Term Evolution) due to higher working frequency points and the need to support more transmission bandwidths. Based on this, a method for reducing power consumption of a wireless communication network applied in a high-speed rail private network is needed.
Disclosure of Invention
The invention aims to provide a wireless communication network energy-saving method, a system, electronic equipment and a storage medium, which can dynamically configure the opening and closing of a base station according to the running condition of a train, thereby greatly reducing the energy consumption of a wireless communication network.
The technical scheme provided by the invention is as follows:
the invention provides a wireless communication network energy-saving method, which comprises the following steps:
dividing a plurality of holding poles which are continuously arranged into a super cell;
at the same time, default control is carried out to start the communication equipment on the first holding pole and the last holding pole in each super cell;
and controlling to open or close the communication equipment on other holding poles in the super cell according to whether the train exists in the super cell.
In a high-speed rail private network scenario, when a wireless communication network is deployed, in order to avoid frequent switching of UEs (user equipment) between cells, a plurality of poles are generally combined into a super cell, and in the super cell, communication devices on different poles have the same physical layer cell ID, so that when the UEs move in the super cell, the inter-cell switching is not involved.
Based on the network structure, a plurality of holding poles which are continuously arranged are divided into super cells, communication equipment on the first holding pole and the last holding pole in each super cell is controlled to be started by default at the same moment, and then the communication equipment on other holding poles in the super cells is controlled to be started or closed according to the fact that whether trains exist in the super cells, so that the holding poles in each super cell do not need to be started all the time, the holding poles are dynamically configured to be started and closed according to the running condition of the trains, and the energy consumption of a wireless communication network can be greatly reduced.
At the same time, for any super cell, assuming that the super cell corresponds to M holding poles, only communication equipment on the 1 st holding pole and the M holding pole needs to be opened by default; when a high-speed rail enters the super cell, the communication equipment on the 2 nd to M-1 th holding poles is required to be opened; and when the number of the trains in the super cell is 0, closing the communication equipment on the 2 nd to M-1 th holding poles.
Specifically, assume that each super cell has 8 poles, where the communication devices on the 1 st and 8 th poles are always on, while the communication devices on the 2 nd to 7 th poles are only on when a train passes through, and assume that for any super cell, the ratio of train passing time to total time is 1/20. Then the energy consumption ratio of the solution compared to the solution that all the pole-holding communication devices start all the time can be calculated as (2+6 × 1/20)/8 ═ 0.2875, and the energy saving percentage is further calculated as:
and (1-0.2875) 100 is 71.25%, so that about 70% of energy consumption can be saved.
Further, the controlling of turning on or off the communication devices on other poles in the super cell according to whether the train exists in the super cell specifically includes:
when the first holding pole or the last holding pole in the super cell identifies that a train enters the super cell, controlling to start communication equipment on other holding poles in the super cell;
and when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, controlling to close communication equipment on other holding poles in the super cell.
Further, the controlling of turning on or off the communication devices on other poles in the super cell according to whether there is a train in the super cell further includes:
when the first holding pole or the last holding pole in the super cell identifies that a train enters the range of the holding pole, performing uplink frequency offset measurement;
when the frequency deviation measurement result is greater than the preset frequency, judging that a train enters the super cell;
and when the frequency deviation measurement result is less than the preset frequency, judging that the train leaves the super cell.
Because the user equipment is not necessarily the user on the train along the railway, in order to avoid interference of other conditions, the uplink frequency offset measurement can be performed when the first holding pole or the last holding pole recognizes that the train enters the holding pole range, and when the frequency offset measurement result is greater than the preset frequency (in the scheme, 100 Hz is selected), the train entering the super cell is judged.
In addition, in the actual operation process, a plurality of trains may pass through one super cell at the same time, that is, one train may be recognized to leave the super cell, but there is also a train condition in the super cell, which is a very common situation in practice, in order to make the super cell have a train, the holding pole in the super cell is always opened, and only when the train leaves the super cell completely, the holding pole in the middle of the super cell is closed, the following method may be adopted:
further, before the first holding pole or the last holding pole in the super cell recognizes that a train enters the holding pole range, the method further includes:
initializing the number of trains A in the super cell to be 0.
Further, when it is determined that a train enters the super cell, making the number a of trains in the super cell equal to a + 1;
and if A is 1, controlling to start communication equipment on other holding poles in the super cell, and otherwise, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
Further, when the train leaves the super cell, the number of trains in the super cell is made to be A-1;
and if A is 0, controlling to close the communication equipment on other holding poles in the super cell, and if not, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
In addition, the present invention also provides an energy saving system for a wireless communication network, comprising:
the zoning module is used for dividing a plurality of poles which are continuously arranged into a super cell;
the first control module is used for controlling and starting communication equipment on a first holding pole and a last holding pole in each super cell by default at the same time;
and the second control module is used for controlling to turn on or turn off the communication equipment on other holding poles in the super cell according to whether the super cell has the train or not.
A plurality of holding poles which are continuously arranged are divided into super cells through partition modules, at the same moment, communication equipment on the first holding pole and the last holding pole in each super cell is started through default control of a first control module, and then according to whether a train exists in each super cell, communication equipment on other holding poles in each super cell is started or closed through control of a second control module, so that the holding poles in each super cell do not need to be started all the time, and according to the running condition of the train, the holding poles are dynamically configured to be opened and closed, and therefore energy consumption of a wireless communication network can be greatly reduced.
Further, when the first holding pole or the last holding pole in the super cell identifies that a train enters the super cell, the second control module controls to start communication equipment on other holding poles in the super cell;
when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, the second control module controls to close communication equipment on other holding poles in the super cell.
In addition, the present invention also provides an electronic device including:
the memory is used for storing the running program;
and the processor is used for executing the running program stored in the memory and realizing the operation executed by the wireless communication network energy-saving method.
In addition, the present invention also provides a storage medium, where at least one instruction is stored, and the instruction is loaded and executed by a processor to implement the operations performed by the above-mentioned power saving method for a wireless communication network.
According to the energy-saving method, the system, the electronic equipment and the storage medium of the wireless communication network provided by the invention, a plurality of holding poles which are continuously arranged are divided into super cells, the communication equipment on the first holding pole and the communication equipment on the last holding pole in each super cell are controlled to be started by default at the same time, and the communication equipment on other holding poles in the super cells is controlled to be started or closed according to the existence of trains in the super cells, so that the holding poles in each super cell do not need to be started all the time, but the opening and closing of the holding poles are dynamically configured according to the running conditions of the trains, and the energy consumption of the wireless communication network can be greatly reduced.
Drawings
The foregoing features, technical features, advantages and embodiments of the present invention will be further explained in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic overall flow diagram of one embodiment of the present invention;
FIG. 2 is a schematic flow diagram of another embodiment of the present invention;
FIG. 3 is a diagram of a super-cell partition in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an energy saving system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Reference numbers in the figures: 1-a partitioning module; 2-a first control module; 3-a second control module; 100-a memory; 200-a processor; 300-a communication interface; 400-a communication bus; 500-input/output interface.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Example 1
One embodiment of the present invention, as shown in fig. 1 and fig. 2, provides a method for saving power in a wireless communication network, including the steps of:
and S1, dividing a plurality of poles which are continuously arranged into a super cell.
As shown in fig. 3, in a high-speed rail private network scenario, when a wireless communication network is deployed, in order to avoid frequent handover of a UE (user equipment) between cells, a super cell is generally formed by a plurality of poles, and in the super cell, communication devices on different poles have the same physical layer cell ID, so that the UE does not involve handover between cells when moving in the super cell.
And S2, at the same time, default control is carried out to start the communication equipment on the first holding pole and the last holding pole in each super cell.
And S3, controlling to turn on or turn off the communication equipment on other holding poles in the super cell according to whether the train exists in the super cell.
Specifically, when a first holding pole or a last holding pole in the super cell identifies that a train enters the super cell, communication equipment on other holding poles in the super cell is controlled to be started; and when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, controlling to close the communication equipment on other holding poles in the super cell.
Based on the network structure, a plurality of holding poles which are continuously arranged are divided into super cells, communication equipment on the first holding pole and the last holding pole in each super cell is controlled to be started by default at the same moment, and then the communication equipment on other holding poles in the super cells is controlled to be started or closed according to the fact that whether trains exist in the super cells, so that the holding poles in each super cell do not need to be started all the time, the holding poles are dynamically configured to be started and closed according to the running condition of the trains, and the energy consumption of a wireless communication network can be greatly reduced.
At the same time, for any super cell, assuming that the super cell corresponds to M holding poles, only communication equipment on the 1 st holding pole and the M holding pole needs to be opened by default; when a high-speed rail enters the super cell, the communication equipment on the 2 nd to M-1 th holding poles is required to be opened; and when the number of the trains in the super cell is 0, closing the communication equipment on the 2 nd to M-1 th holding poles.
Specifically, assume that each super cell has 8 poles, where the communication devices on the 1 st and 8 th poles are always on, while the communication devices on the 2 nd to 7 th poles are only on when a train passes through, and assume that for any super cell, the ratio of train passing time to total time is 1/20. Then the energy consumption ratio of the solution compared to the solution that all the pole-holding communication devices start all the time can be calculated as (2+6 × 1/20)/8 ═ 0.2875, and the energy saving percentage is further calculated as:
and (1-0.2875) 100 is 71.25%, so that about 70% of energy consumption can be saved.
Example 2
An embodiment of the present invention, as shown in fig. 2, on the basis of embodiment 1, controlling to turn on or off communication devices on other poles in the super cell according to whether there is a train in the super cell, further includes:
and S31, when the first holding pole or the last holding pole in the super cell identifies that a train enters the holding pole range, performing uplink frequency deviation measurement.
And S32, when the frequency deviation measurement result is greater than the preset frequency, judging that a train enters the super cell.
And S33, when the frequency deviation measurement result is less than the preset frequency, judging that the train leaves the super cell.
Because the user equipment is not necessarily the user on the train along the railway, in order to avoid interference of other conditions, the uplink frequency offset measurement can be performed when the first holding pole or the last holding pole recognizes that the train enters the holding pole range, and when the frequency offset measurement result is greater than the preset frequency (in the scheme, 100 Hz is selected), the train entering the super cell is judged.
In addition, in the actual operation process, a plurality of trains may pass through one super cell at the same time, that is, one train may be recognized to leave the super cell, but there is also a train condition in the super cell, which is a very common situation in practice, in order to make the super cell have a train, the holding pole in the super cell is always opened, and only when the train leaves the super cell completely, the holding pole in the middle of the super cell is closed, the following method may be adopted:
initializing the number A of trains in the super cell to be 0; when judging that a train enters the super cell, enabling the number A of the trains in the super cell to be A + 1; and if A is 1, controlling to start communication equipment on other holding poles in the super cell, and otherwise, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
When judging that a train leaves the super cell, enabling the number A of the trains in the super cell to be A-1; if A is 0, controlling to close the communication equipment on other holding poles in the super cell, otherwise, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
By the method, when the train exists in the super cell, the holding pole in the super cell is always opened, and only when the train leaves the super cell completely, the holding pole in the middle of the super cell is closed, so that the influence on a normal wireless communication network is avoided.
Example 3
In an embodiment of the present invention, as shown in fig. 4, the present invention further provides a wireless communication network energy saving system, which includes a partition module 1, a first control module 2, and a second control module 3.
The partition module 1 is used for dividing a plurality of poles which are continuously arranged into a super cell; the first control module 2 is used for controlling and starting communication equipment on a first holding pole and a last holding pole in each super cell by default at the same time; the second control module 3 is used for controlling to open or close the communication equipment on other holding poles in the super cell according to whether a train exists in the super cell.
Specifically, when the first holding pole or the last holding pole in the super cell recognizes that a train enters the super cell, the second control module 3 controls to start communication equipment on other holding poles in the super cell; when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, the second control module 3 controls to close the communication equipment on other holding poles in the super cell.
As shown in fig. 3, in a high-speed rail private network scenario, when a wireless communication network is deployed, in order to avoid frequent handover of a UE (user equipment) between cells, a super cell is generally formed by a plurality of poles, and in the super cell, communication devices on different poles have the same physical layer cell ID, so that the UE does not involve handover between cells when moving in the super cell.
At the same time, for any super cell, assuming that the super cell corresponds to M holding poles, only communication equipment on the 1 st holding pole and the M holding pole needs to be opened by default; when a high-speed rail enters the super cell, the communication equipment on the 2 nd to M-1 th holding poles is required to be opened; and when the number of the trains in the super cell is 0, closing the communication equipment on the 2 nd to M-1 th holding poles.
Specifically, assume that each super cell has 8 poles, where the communication devices on the 1 st and 8 th poles are always on, while the communication devices on the 2 nd to 7 th poles are only on when a train passes through, and assume that for any super cell, the ratio of train passing time to total time is 1/20. Then the energy consumption ratio of the solution compared to the solution that all the pole-holding communication devices start all the time can be calculated as (2+6 × 1/20)/8 ═ 0.2875, and the energy saving percentage is further calculated as:
and (1-0.2875) 100 is 71.25%, so that about 70% of energy consumption can be saved.
A plurality of holding poles which are continuously arranged are divided into super cells through partition modules, at the same moment, communication equipment on the first holding pole and the last holding pole in each super cell is started through default control of a first control module, and then according to whether a train exists in each super cell, communication equipment on other holding poles in each super cell is started or closed through control of a second control module, so that the holding poles in each super cell do not need to be started all the time, and according to the running condition of the train, the holding poles are dynamically configured to be opened and closed, and therefore energy consumption of a wireless communication network can be greatly reduced.
Example 4
In addition, as shown in fig. 5, the present invention further provides an electronic device, which includes a memory 100 and a processor 200, where the memory 100 is used to store an operating program, and the processor 200 is used to execute the operating program stored in the memory, so as to implement the operations performed by the power saving method for a wireless communication network according to any one of embodiments 1-2.
Specifically, the electronic device may further include a communication interface 300, a communication bus 400, and an input/output interface 500, wherein the processor 200, the memory 100, the input/output interface 500, and the communication interface 300 complete communication with each other through the communication bus 400.
A communication bus 400 is a circuit that connects the elements described and enables transmission between these elements. For example, the processor 200 receives commands from other elements through the communication bus 400, decrypts the received commands, and performs calculations or data processing according to the decrypted commands. The memory 100 may include program modules such as a kernel (kernel), middleware (middleware), an Application Programming Interface (API), and applications. The program modules may be comprised of software, firmware or hardware, or at least two of the same. The input/output interface 500 forwards commands or data entered by a user via an input/output device (e.g., sensor, keyboard, touch screen). The communication interface 300 connects the electronic device with other network devices, user equipment, networks. For example, the communication interface 300 may be connected to a network by wire or wirelessly to connect to external other network devices or user devices. The wireless communication may include at least one of: wireless fidelity (WiFi), Bluetooth (BT), Near Field Communication (NFC), Global Positioning Satellite (GPS) and cellular communications, among others. The wired communication may include at least one of: universal Serial Bus (USB), high-definition multimedia interface (HDMI), asynchronous transfer standard interface (RS-232), and the like. The network may be a telecommunications network and a communications network. The communication network may be a computer network, the internet of things, a telephone network. The electronic device may be connected to the network through the communication interface 300, and a protocol used for the electronic device to communicate with other network devices may be supported by at least one of an application, an Application Programming Interface (API), middleware, a kernel, and a communication interface.
Example 5
In addition, the present invention also provides a storage medium, where at least one instruction is stored, and the instruction is loaded and executed by a processor to implement the operations performed by the method for saving power in a wireless communication network according to any of embodiments 1 to 2. For example, the computer readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like. They may be implemented in program code that is executable by a computing device such that it is executed by the computing device, or separately, or as individual integrated circuit modules, or as a plurality or steps of individual integrated circuit modules. Thus, the present invention is not limited to any specific combination of hardware and software.
It should be noted that the above embodiments can be freely combined as necessary. 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 (10)
1. A method for saving power in a wireless communication network, comprising the steps of:
dividing a plurality of holding poles which are continuously arranged into a super cell;
at the same time, default control is carried out to start the communication equipment on the first holding pole and the last holding pole in each super cell;
and controlling to open or close the communication equipment on other holding poles in the super cell according to whether the train exists in the super cell.
2. The method according to claim 1, wherein the controlling of turning on or off the communication devices on the other poles in the super cell according to whether or not there is a train in the super cell specifically comprises:
when the first holding pole or the last holding pole in the super cell identifies that a train enters the super cell, controlling to start communication equipment on other holding poles in the super cell;
and when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, controlling to close communication equipment on other holding poles in the super cell.
3. The method according to claim 2, wherein the controlling of turning on or off the communication devices on the other poles in the super cell according to whether the train exists in the super cell further comprises:
when the first holding pole or the last holding pole in the super cell identifies that a train enters the range of the holding pole, performing uplink frequency offset measurement;
when the frequency deviation measurement result is greater than the preset frequency, judging that a train enters the super cell;
and when the frequency deviation measurement result is less than the preset frequency, judging that the train leaves the super cell.
4. The method of claim 3, wherein before the first or last holding pole in the super cell identifies that a train enters the holding pole range, the method further comprises:
initializing the number of trains A in the super cell to be 0.
5. The method of claim 4, wherein the step of:
when a train enters the super cell, enabling the number A of the trains in the super cell to be A + 1;
and if A is 1, controlling to start communication equipment on other holding poles in the super cell, and otherwise, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
6. The method of claim 5, wherein:
when the train leaves the super cell, enabling the number A of the trains in the super cell to be A-1;
and if A is 0, controlling to close the communication equipment on other holding poles in the super cell, and if not, continuously identifying whether a train enters the range of the first holding pole or the last holding pole in the super cell.
7. A wireless communication network power saving system, comprising:
the zoning module is used for dividing a plurality of poles which are continuously arranged into a super cell;
the first control module is used for controlling and starting communication equipment on a first holding pole and a last holding pole in each super cell by default at the same time;
and the second control module is used for controlling to turn on or turn off the communication equipment on other holding poles in the super cell according to whether the super cell has the train or not.
8. The wireless communication network power saving system of claim 7, wherein:
when the first holding pole or the last holding pole in the super cell identifies that a train enters the super cell, the second control module controls to start communication equipment on other holding poles in the super cell;
when the first holding pole or the last holding pole in the super cell identifies that the train leaves the super cell, the second control module controls to close communication equipment on other holding poles in the super cell.
9. An electronic device, comprising:
the memory is used for storing the running program;
a processor for executing the operating program stored in the memory to implement the operations performed by the wireless communication network energy saving method according to any one of claims 1 to 6.
10. A storage medium, characterized by: the storage medium has stored therein at least one instruction, which is loaded and executed by a processor to implement the operations performed by the wireless communication network power saving method of any one of claims 1 to 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112672318A (en) * | 2021-03-17 | 2021-04-16 | 上海擎昆信息科技有限公司 | Method and system for scheduling communication service along high-speed rail |
| CN112672318B (en) * | 2021-03-17 | 2021-05-18 | 上海擎昆信息科技有限公司 | Method and system for scheduling communication service along high-speed rail |
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