CN113873609A - Method for guiding client to access AP and AC - Google Patents

Method for guiding client to access AP and AC Download PDF

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Publication number
CN113873609A
CN113873609A CN202111118261.XA CN202111118261A CN113873609A CN 113873609 A CN113873609 A CN 113873609A CN 202111118261 A CN202111118261 A CN 202111118261A CN 113873609 A CN113873609 A CN 113873609A
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client
accessed
communication quality
preset
target path
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CN113873609B (en
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吴清根
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New H3C Technologies Co Ltd Chengdu Branch
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New H3C Technologies Co Ltd Chengdu Branch
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present specification provides a method and an AC for guiding a client to access an AP, the method including: the method comprises the steps of detecting the communication quality of a first client side accessed to a first AP, obtaining a second AP accessed by the first client side before the first client side is accessed to the first AP when the communication quality of the first client side is detected to reach a preset condition, obtaining a target path table matched with the first AP and the second AP from a path library by taking the first AP and the second AP as indexes, recording a history record of a third AP accessed by the first client side after the first client side is accessed to the first AP in the target path table, and sending the target path table to the first client side so that the first client side can be accessed to the third AP according to the target path table. By the method, the AC can guide the client to select the AP to be accessed.

Description

Method for guiding client to access AP and AC
Technical Field
The present disclosure relates to the field of wireless communication technologies, and in particular, to a method for guiding a client to access an AP and an AC.
Background
WLAN (Wireless LAN) is increasingly widely used, and roaming experience requirements of users on Wireless networks are gradually increasing, and Wireless clients are required to roam and connect to nearby APs (Access points) where they can move.
An AC (Access Controller, centralized Controller) centrally manages the APs. In the moving process, the wireless client actively identifies the network environment, discovers a new AP and then accesses the new AP, and the whole roaming process belongs to the active behavior of the client. The wireless clients are various in types, manufacturers of the clients realize different implementations, some manufacturers roam too sensitively to generate oscillation, some manufacturers roam too insensitively to cause roaming adhesion, namely cannot roam to an AP with good signals in time, and finally experience is poor.
In order to solve the above problems, the wireless standard organization provides a method for an AC to actively request terminal switching, in which an 802.11v BTM (BSS Transition Management) may send a message carrying a candidate BSS (Basic Service Set) list to a wireless client, and the wireless client selects an AP to be accessed after receiving the message. When the AC detects that the communication quality of the wireless client terminal is poor and the access position needs to be switched, the AC can interact with the wireless client terminal through the mechanism.
When the AC cannot timely detect which APs can find the client for the current client to access, the AC cannot inform the client to switch to the proper AP; or the client does not support detection to provide a BSS list which can be scanned by the current position to the AC, and the AC has no data and cannot inform the client to switch to a proper AP.
Disclosure of Invention
The disclosure provides a method for guiding a client to access an AP and an AC, and the AC can guide the client to select the AP to be accessed through the method.
The embodiment of the disclosure provides a method for guiding a client to access an AP, which is applied to an AC and comprises the following steps:
detecting the communication quality of a first client accessed to a first AP;
when detecting that the communication quality of a first client reaches a preset condition, acquiring a second AP (access point) accessed by the first client before accessing the first AP;
acquiring a target path table matched with the first AP and the second AP from a path library by taking the first AP and the second AP as indexes, wherein the target path table also records a history record of a third AP accessed by the first client after accessing the first AP;
and sending the target path table to a first client so that the first client accesses a third AP according to the target path table.
Optionally, the detecting the communication quality of the first client accessing the first AP includes:
the transmission rate of the first AP and the first client is detected and/or the signal strength between the first AP and the first client is detected.
Optionally, the preset conditions include: a preset rate and/or a preset signal strength.
Optionally, the method for determining that the communication quality of the first client meets the preset condition includes: when the transmission rate of the first client and the first AP is detected to reach a preset rate, determining that the communication quality of the first client reaches a preset condition; and/or the presence of a gas in the gas,
when the signal strength of the first client and the first AP is detected to reach the preset signal strength, the communication quality of the first client is determined to reach the preset condition.
Optionally, the sending the target path table to the first client includes:
and carrying out weighting processing on the access times, the access time and the load information of the third AP in the obtained multiple target path tables, and selecting the target path table according to a weighting processing result to send to the first client.
Optionally, the method for obtaining the path library includes:
and taking the MAC address of each client as an index, sequentially recording each AP historically accessed by each client, and storing the recording result in a path library.
It can be seen from the foregoing embodiments that, when the AC detects that the communication quality of the client reaches the preset condition, the AC may send the target path table to the client, so that the client selects to access the third AP according to the target path table.
The disclosed embodiments also provide an AC, comprising:
the detection module is used for detecting the communication quality of a first client accessed to a first AP;
the system comprises an acquisition module, a first Access Point (AP) and a second AP, wherein the acquisition module is used for acquiring a second AP accessed by a first client before the first AP is accessed when the communication quality of the first client is detected to reach a preset condition;
the obtaining module is further configured to obtain a target path table matched with the first AP and the second AP from a path library by using the first AP and the second AP as indexes, where a history of a third AP accessed by the first client after accessing the first AP is further recorded in the target path table;
and the sending module is used for sending the target path table to the first client so that the first client accesses the third AP according to the target path table.
Optionally, the detecting module is specifically configured to detect a transmission rate between the first AP and the first client and/or detect a signal strength between the first AP and the first client.
Optionally, the preset conditions include: a preset rate and/or a preset signal strength.
Optionally, the detection module is specifically configured to determine that the communication quality of the first client reaches a preset condition when it is detected that the transmission rate between the first client and the first AP reaches a preset rate; and/or the presence of a gas in the gas,
when the signal strength of the first client and the first AP is detected to reach the preset signal strength, the communication quality of the first client is determined to reach the preset condition.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic flowchart of a method for guiding a client to access an AP according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
The terminology used in the description 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 and 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 herein 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 specification. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Currently, the AC may send a deauthentication message to the client via the AP to which the client is accessing, to notify that the client is offline, and the client needs to discover the service again, which may cause the time of the traffic terminal to become long; meanwhile, the AP and the client are not cooperative, the AP conveniently interrupts connection, and the influence on the service running when the client is disconnected is larger.
To solve the above technical problem, an embodiment of the present disclosure provides a method for guiding a client to access an AP, as shown in fig. 1, where the method is applied in an AC, and the method includes:
s101, detecting the communication quality of a first client accessed to a first AP;
s102, when detecting that the communication quality of a first client reaches a preset condition, acquiring a second AP (access point) accessed by the first client before accessing the first AP;
s103, a target path table matched with the first AP and the second AP is obtained from a path library by taking the first AP and the second AP as indexes, and a history record of a third AP accessed by the first client after accessing the first AP is also recorded in the target path table;
s104, the target path table is sent to the first client side, so that the first client side is accessed to the third AP according to the target path table.
In this embodiment, the AC device sequentially records the APs historically accessed by each client, using the MAC address of each client as an index, and stores the recording result in the path library.
In one implementation mode, after the client accesses the AC, the AC performs calculation after the client accesses the AP every time, and an access path record list with directions from the previous access AP position, the current access AP position to the next access AP position is formed based on each client. And the access times, the latest access time and the like of each path can be counted.
In one example, the AC performs the directional historical access path and statistics process as follows:
when a client accesses BSS1 on the AC, it is recorded that the current access BSS1 indexes BSSID 1.
When the client moves to switch to the BSS2, an access path BSS1(Previous) to BSS2(Current) is formed according to the recorded Current access BSS index BSSID1, i.e., the Previous BSS index BSSID 1.
And updating the current access BSS index to be BSSID2, and recording the last access BSS index as BSSID 1.
When the client moves to the Next BSS, for example, switches to BSS3, according to recorded last access BSS index BSSID1 and recorded Current access BSS index BSSID2, matching the access path information, recording the Next access BSS information from BSS1 to BSS2 as BSS3, that is, forming an access path from BSS1(Previous) to BSS2(Current) to BSS3(Next), and recording the access time and updating the access times.
A new access path BSS2(Previous) to BSS3(Current) is formed according to the recorded Current access BSS index BSSID2, i.e., the Previous BSS index BSSID 2.
The current access BSS index is updated to be BSSID3, and the last access BSS index is updated to be BSSID 2.
The above process may be repeated when the client desires the next BSS to move (e.g., BSS 4).
When generating the path library, the MAC address of each client may be used as an index to record and store each AP that each client has historically accessed, and the same client may have multiple access paths.
In this embodiment, before performing step S101, the AC may determine whether the AP list around the client cannot be obtained in time or cannot be obtained by the client. When it is determined that the AP list around the client cannot be acquired, step S101 is performed again.
In this embodiment, the AC-monitored communication quality includes: the transmission rate of the AP and the client is detected and/or the signal strength between the AP and the client is detected. In practical application, the two conditions can be simultaneously used as the communication quality to be monitored, and one of the conditions can be used as the communication quality to be monitored.
Accordingly, the preset condition may be a preset rate and/or a preset signal strength.
When the monitored communication quality is the transmission rate of the AP and the client, if the monitored transmission rate reaches or is lower than the preset rate, it indicates that the communication quality is not good, then step S101 is executed; when the monitored communication quality is that the signal strength between the AP and the client is equal to or lower than the preset signal strength, which indicates that the communication quality is not good, step S101 is executed.
In step S102, when it is determined in step S101 that the communication quality between the first AP and the first client reaches the preset condition, the target path table is matched from the path library by using the first AP currently accessed by the first client and a second AP of the first client before accessing the first AP as indexes.
As described above, a plurality of target path tables may exist in the path library for the same client, and at this time, the historical access frequency, the historical access time, and the load information, which are expected to access the next AP (third AP) in each target path table, may be obtained, and weighting processing may be performed, and one or more target path tables may be selected from the plurality of target path tables according to a result of the weighting processing, and sent to the first client.
It can be seen from the above embodiments that when the AC cannot timely acquire the AP list around the client
Or when the AP list around the client cannot be obtained through the client, the calendar of the client can be obtained through the steps
History is accessed into the path table of each AP, and candidate BSS columns are calculated through history access paths, statistics and loads
The table assists the client to select a proper AP for access, so that the client can quickly access the proper AP and better use experience is achieved.
Based on the same concept as the method, the embodiment of the present disclosure further provides an AC, including:
the detection module is used for detecting the communication quality of a first client accessed to a first AP;
the system comprises an acquisition module, a first Access Point (AP) and a second AP, wherein the acquisition module is used for acquiring a second AP accessed by a first client before the first AP is accessed when the communication quality of the first client is detected to reach a preset condition;
the obtaining module is further configured to obtain a target path table matched with the first AP and the second AP from a path library by using the first AP and the second AP as indexes, where a history of a third AP accessed by the first client after accessing the first AP is further recorded in the target path table;
and the sending module is used for sending the target path table to the first client so that the first client accesses the third AP according to the target path table.
Optionally, the detecting module is specifically configured to detect a transmission rate between the first AP and the first client and/or detect a signal strength between the first AP and the first client.
Optionally, the preset conditions include: a preset rate and/or a preset signal strength.
Optionally, the detection module is specifically configured to determine that the communication quality of the first client reaches a preset condition when it is detected that the transmission rate between the first client and the first AP reaches a preset rate; and/or the presence of a gas in the gas,
when the signal strength of the first client and the first AP is detected to reach the preset signal strength, the communication quality of the first client is determined to reach the preset condition.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may 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 may also be 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 will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, 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 above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (10)

1. A method for directing a client to access an AP, the method being applied to an AC, the method comprising:
detecting the communication quality of a first client accessed to a first AP;
when detecting that the communication quality of a first client reaches a preset condition, acquiring a second AP (access point) accessed by the first client before accessing the first AP;
acquiring a target path table matched with the first AP and the second AP from a path library by taking the first AP and the second AP as indexes, wherein the target path table also records a history record of a third AP accessed by the first client after accessing the first AP;
and sending the target path table to a first client so that the first client accesses a third AP according to the target path table.
2. The method of claim 1, wherein the detecting the communication quality of the first client accessing the first AP comprises:
the transmission rate of the first AP and the first client is detected and/or the signal strength between the first AP and the first client is detected.
3. The method according to claim 2, wherein the preset conditions include:
a preset rate and/or a preset signal strength.
4. The method of claim 3, wherein determining that the communication quality of the first client is detected to meet a preset condition comprises:
when the transmission rate of the first client and the first AP is detected to reach a preset rate, determining that the communication quality of the first client reaches a preset condition; and/or the presence of a gas in the gas,
when the signal strength of the first client and the first AP is detected to reach the preset signal strength, the communication quality of the first client is determined to reach the preset condition.
5. The method of claim 1, wherein sending the target path table to the first client comprises:
and carrying out weighting processing on the access times, the access time and the load information of the third AP in the obtained multiple target path tables, and selecting the target path table according to a weighting processing result to send to the first client.
6. The method of claim 1, wherein the method of obtaining the path library comprises:
and taking the MAC address of each client as an index, sequentially recording each AP historically accessed by each client, and storing the recording result in a path library.
7. An AC, wherein the AC comprises:
the detection module is used for detecting the communication quality of a first client accessed to a first AP;
the system comprises an acquisition module, a first Access Point (AP) and a second AP, wherein the acquisition module is used for acquiring a second AP accessed by a first client before the first AP is accessed when the communication quality of the first client is detected to reach a preset condition;
the obtaining module is further configured to obtain a target path table matched with the first AP and the second AP from a path library by using the first AP and the second AP as indexes, where a history of a third AP accessed by the first client after accessing the first AP is further recorded in the target path table;
and the sending module is used for sending the target path table to the first client so that the first client accesses the third AP according to the target path table.
8. The AC of claim 7,
the detection module is specifically configured to detect a transmission rate of the first AP and the first client and/or detect a signal strength between the first AP and the first client.
9. The AC of claim 8, wherein the preset conditions comprise: a preset rate and/or a preset signal strength.
10. The AC of claim 9,
the detection module is specifically configured to determine that the communication quality of the first client reaches a preset condition when detecting that the transmission rate between the first client and the first AP reaches a preset rate; and/or the presence of a gas in the gas,
when the signal strength of the first client and the first AP is detected to reach the preset signal strength, the communication quality of the first client is determined to reach the preset condition.
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