CN114466430B - Roaming method of mine track traffic WIFI terminal, terminal and computer readable storage medium - Google Patents
Roaming method of mine track traffic WIFI terminal, terminal and computer readable storage medium Download PDFInfo
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- CN114466430B CN114466430B CN202210151571.XA CN202210151571A CN114466430B CN 114466430 B CN114466430 B CN 114466430B CN 202210151571 A CN202210151571 A CN 202210151571A CN 114466430 B CN114466430 B CN 114466430B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a roaming method of a mine track traffic WIFI terminal, a terminal and a computer readable storage medium, which aim at the scene of rapid movement of the mine track traffic WIFI terminal, simplify roaming conditions, comprehensively judge signal quality through multiple sampling, overcome the problem that underground signal acquisition is possibly inaccurate, timely roam to a WIFI hotspot with better signal, and avoid the situation that the WIFI terminal loses packets and breaks networks due to untimely roaming.
Description
Technical Field
The invention belongs to the technical field of WIFI, and particularly relates to a roaming method of a mine track traffic WIFI terminal, the terminal and a computer-readable storage medium.
Background
The existing WIFI terminal roaming algorithm is generally used in static scenes, needs to judge whether the signal intensity change of a hot spot is lower than a threshold value, whether the difference value between the signal intensity and the current hot spot signal intensity is larger than a specified threshold value, and also needs to consider factors such as a message retransmission rate to determine whether to initiate roaming switching.
For the mining track traffic field, the tunnel is usually a scene of continuous signal coverage, a scene of cross coverage of a large range and a channel is less, the acquired signal strength may be inaccurate due to factors such as mirror reflection and the like of the underground tunnel, the existing WIFI terminal roaming algorithm is adopted to often roam to a hot spot with poor actual effect, meanwhile, the mining track traffic WIFI terminal can rapidly move along with the mining track traffic tool, the judging condition of the existing WIFI terminal roaming algorithm is more, so that the problems of incapability of timely roaming, poor actual experience effect, serious packet loss phenomenon, even network breakage and the like are caused.
Disclosure of Invention
Based on the above, aiming at the technical problems, a roaming method, equipment and a computer readable storage medium of a mine track traffic WIFI terminal are provided.
The technical scheme adopted by the invention is as follows:
on one hand, the roaming method of the mine track traffic WIFI terminal is provided, and is characterized by comprising the following steps:
s101, sampling the signal intensity of a current WIFI hotspot in a mine roadway and a WIFI hotspot to be roamed, which is adjacent to the current WIFI hotspot in front, for a plurality of times according to preset sampling times by adopting a periodical scanning mode;
s102, comparing the signal intensity of the WIFI hotspot to be roamed and the signal intensity of the current WIFI hotspot in each sampling;
s103, if the signal intensity of the WIFI hotspot to be roamed for n times is larger than that of the current WIFI hotspot, roaming to the WIFI hotspot to be roamed, wherein n is larger than or equal to 2 and smaller than or equal to the preset sampling times;
the periodic time of the periodic scanning and the preset sampling times meet the following conditions: t is < = M, t represents cycle time, c represents preset sampling times, s represents maximum moving speed of the WIFI terminal, and M represents half of maximum length of a signal overlapping area of adjacent WIFI hot spots in a moving direction.
On the other hand, the WIFI terminal is characterized by comprising a storage module, wherein the storage module comprises instructions loaded and executed by a processor, and the instructions when executed enable the processor to execute the roaming method of the mining track traffic WIFI terminal.
In yet another aspect, a computer readable storage medium is provided, where the computer readable storage medium stores one or more programs, and when executed by a processor, implement a roaming method of a mining rail transit WIFI terminal as described above.
Aiming at the scene of rapid movement of the mine track traffic WIFI terminal, the roaming condition is simplified, the signal quality is comprehensively judged through multiple sampling, the problem that underground signal acquisition is possibly inaccurate is solved, the mine track traffic WIFI terminal can roam to a WIFI hotspot with better signal in time, and the situation that the WIFI terminal loses packets and breaks networks due to untimely roaming is avoided.
Drawings
The invention is described in detail below with reference to the attached drawings and detailed description:
fig. 1 is a flow chart of a roaming method of a mine track traffic WIFI terminal;
FIG. 2 is a schematic diagram of the present invention;
fig. 3 is a schematic structural diagram of a WIFI terminal according to the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present disclosure provides a roaming method of a mine rail transit WIFI terminal, including:
s101, sampling the signal intensity of a current WIFI hotspot in a mine roadway and a WIFI hotspot to be roamed, which is adjacent to the current WIFI hotspot in front, for a plurality of times according to preset sampling times by adopting a periodical scanning mode.
In a mine roadway, a plurality of WIFI hotspots are sequentially arranged at intervals, a signal overlapping area is arranged between adjacent WIFI hotspots, when sampling is carried out each time, the current WIFI hotspots and the hotspot information of the WIFI hotspots to be roamed, which are adjacent to the current WIFI hotspots, in front of the current WIFI hotspots are queried in real time through standard 802.11probe messages, and the signal intensity of the current WIFI hotspots and the signal intensity of the WIFI hotspots to be roamed are respectively obtained from the hotspot information.
The current WIFI hotspot refers to a WIFI hotspot connected with the WIFI terminal currently.
In order to avoid interference of signals between adjacent hot spots and influence accuracy of hot spot signal intensity sampling, two adjacent WIFI hot spots in a mine roadway adopt different channels.
S102, comparing the signal intensity of the WIFI hotspot to be roamed and the signal intensity of the current WIFI hotspot in each sampling.
Aiming at the characteristic that the mine track traffic WIFI terminal moves rapidly along with the mine track traffic tool, the invention simplifies the judgment of roaming conditions, and the key point is determined according to the signal intensity of the WIFI hot spot.
S103, if the signal intensity of the WIFI hotspot to be roamed for n times is larger than that of the current WIFI hotspot, roaming to the WIFI hotspot to be roamed, wherein n is larger than or equal to 2 and smaller than or equal to the preset sampling times.
Under the mining roadway environment, the signal quality is comprehensively judged through multiple sampling under the condition that the signal quality is not accurately acquired and even cannot be acquired due to the influence of physical conditions such as mirror reflection, for example, the period is 1 second, the sampling times are 8 times, and if 6 WIFI hot spots to be roamed are better than the current associated hot spots, the WIFI hot spots are roamed to.
Taking fig. 2 as an example, three WIFI hotspots sequentially arranged at intervals in a roadway are shown in fig. 2: AP1 (channel 1), AP2 (channel 6) and AP3 (channel 11), the signal coverage radius of each hotspot is R, and a signal overlapping region is formed between adjacent hotspots, and one half of the maximum length of the signal overlapping region in the moving direction is M.
Assuming that the mine WIFI terminal currently moves from point a to point E along with the mine rail vehicle, the signal intensity of AP1 and AP2 detected at point C in an ideal state is similar, the signal intensity of AP2 detected after exceeding point C will be greater than the signal intensity of AP1, the sampling period is set to be t seconds, the sampling times are C times, the maximum moving speed of the terminal is s meters/second, the time required for completing C times of sampling is t×c, after exceeding point C, the moving distance of the terminal is t×c×s (the distance from point C to point D), and the signal is required to be satisfied to ensure that the WIFI terminal smoothly roams from AP1 to AP2, because under the normal condition, the farther the WIFI terminal is from the connected AP1, the worse the signal quality is, the worse the data transmission rate is, the worst signal is the slower the rate is when reaching point E, in order to ensure the data quantity of the WIFI terminal in the roaming process, the distance t×c of the whole signal acquisition period after exceeding point C is smaller than the distance t×c×c, the distance from point C to point C is required to be smaller than M, the current signal is not to be larger than M, and if the WIFI terminal is not moved to be close to the current network, and no signal is required to be a current, and no signal is required to be moved beyond the WIFI terminal.
Accordingly, under the condition that the maximum moving speed and M of the WIFI terminal are known, proper t and C can be selected to enable the roaming point D to be close to the middle point C of the signal overlapping area, if the maximum moving speed is 10KM/h and M is 30M, and if the sampling period is 1 second and the sampling times are 8 times, the distance from the C point to the D point is 22.2M, and the WIFI terminal can be ensured to continuously network before roaming.
Of course, when the network is laid in the roadway, the distance between adjacent hot spots can be reduced or the hot spot with wider signal coverage range is used, so that the M of the signal overlapping area is increased, and the method has better effect when being matched.
Based on the same inventive concept, as shown in fig. 3, the embodiment of the present disclosure further provides a WIFI terminal, which includes a storage module 11, a processor 12, a WIFI module 13 and an antenna 14, where the storage module 11 and the WIFI module 13 are connected with the processor 12, the WIFI module 13 is connected with the antenna 14, and the WIFI module 13 communicates with a WIFI hotspot through the antenna 14.
The memory module 11 includes instructions loaded and executed by the processor 12, which when executed, cause the processor 12 to perform steps according to various exemplary embodiments of the present invention described in the roaming method section of a mining rail transit WIFI terminal described in the present specification.
The memory module may include, among other things, readable media in the form of volatile memory units, such as Random Access Memory (RAM) units and/or cache memory units, and may further include Read Only Memory (ROM) units.
Based on the same inventive concept, the present description embodiments also provide a computer-readable storage medium storing one or more programs that, when executed by a processor, implement the steps according to the various exemplary embodiments of the present invention described in the roaming method section of the mine rail transit WIFI terminal described above in the present description.
The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a computer-readable storage medium include one or more wire-based electrical connections, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
However, it will be appreciated by persons skilled in the art that the above embodiments are provided for illustration of the invention and not for limitation thereof, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims as long as they fall within the true spirit of the invention.
Claims (5)
1. The roaming method of the mine track traffic WIFI terminal is characterized by comprising the following steps of:
s101, sampling the signal intensity of a current WIFI hotspot in a mine roadway and a WIFI hotspot to be roamed, which is adjacent to the current WIFI hotspot in front, for a plurality of times according to preset sampling times by adopting a periodical scanning mode;
s102, comparing the signal intensity of the WIFI hotspot to be roamed and the signal intensity of the current WIFI hotspot in each sampling;
s103, if the signal intensity of the WIFI hotspot to be roamed for n times is larger than that of the current WIFI hotspot, roaming to the WIFI hotspot to be roamed, wherein n is larger than or equal to 2 and smaller than or equal to the preset sampling times;
the periodic time of the periodic scanning and the preset sampling times meet the following conditions: t is < = M, t represents cycle time, c represents preset sampling times, s represents maximum moving speed of the WIFI terminal, and M represents half of maximum length of a signal overlapping area of adjacent WIFI hot spots in a moving direction.
2. The roaming method of the mine rail transit WIFI terminal according to claim 1, wherein the S101 further includes:
when sampling is carried out each time, inquiring the current WIFI hotspot and the hotspot information of the WIFI hotspot to be roamed, which is adjacent to the current WIFI hotspot in front, in real time through a standard 802.11probe message;
and respectively acquiring the signal intensity of the current WIFI hotspot and the WIFI hotspot to be roamed from the hotspot information.
3. The roaming method of the mine rail transit WIFI terminal according to claim 1 or 2, wherein two adjacent WIFI hotspots in the mine tunnel use different channels.
4. A WIFI terminal comprising a memory module including instructions loaded and executed by a processor, which when executed, cause the processor to perform a roaming method of a mining rail transit WIFI terminal according to any of claims 1-3.
5. A computer readable storage medium storing one or more programs, which when executed by a processor, implement a roaming method of a mining rail transit WIFI terminal according to any of claims 1-3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151571.XA CN114466430B (en) | 2022-02-18 | 2022-02-18 | Roaming method of mine track traffic WIFI terminal, terminal and computer readable storage medium |
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| CN202210151571.XA CN114466430B (en) | 2022-02-18 | 2022-02-18 | Roaming method of mine track traffic WIFI terminal, terminal and computer readable storage medium |
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| CN114466430A CN114466430A (en) | 2022-05-10 |
| CN114466430B true CN114466430B (en) | 2023-08-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114916021B (en) * | 2022-05-17 | 2023-04-28 | 上海山源电子科技股份有限公司 | Downhole roaming system |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2017513295A (en) * | 2014-04-24 | 2017-05-25 | エルジー エレクトロニクス インコーポレイティド | Measurement execution method and terminal |
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| CN111654850A (en) * | 2019-03-04 | 2020-09-11 | 华为技术有限公司 | Roaming method and communication device for wireless local area network |
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| CN113965970A (en) * | 2021-12-09 | 2022-01-21 | 上海市共进通信技术有限公司 | Method, device, processor and storage medium for realizing autonomous roaming control on premise of not depending on AP (access point) terminal for WIFI (wireless fidelity) terminal |
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