CN114222351A

CN114222351A - AP (access point) access method, AP, client and communication system

Info

Publication number: CN114222351A
Application number: CN202111584191.7A
Authority: CN
Inventors: 吴清根
Original assignee: New H3C Big Data Technologies Co Ltd
Current assignee: New H3C Big Data Technologies Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-03-22

Abstract

The present specification provides a method for accessing an AP, a client, and a communication system, where the method includes: receiving a detection request message sent by a client, acquiring a first signal strength indicator (RSSI) for receiving the detection request message, and sending a detection response message to the client, wherein the detection response message carries the first RSSI, so that the client judges whether to access the AP or not according to the first RSSI carried in the detection response message. By the method, the client can autonomously judge whether the current signal accessed to the AP meets the access requirement or not, autonomously and quickly select the AP with the signal meeting the condition for access, and the overall access experience is improved.

Description

AP (access point) access method, AP, client and communication system

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method for accessing an AP, a client, and a communication system.

Background

With the development of Wireless communication, WLAN (Wireless LAN) is increasingly widely used, and the requirement of the client on the communication quality of the Wireless network is higher and higher.

When the client is far away from the AP, the sending and receiving rates of the messages between the client and the AP are generally low, the wireless air interface occupied by the communication process is long, and the air interfaces used by other surrounding clients are influenced.

For example, in an actual scenario, a user watches a video with a mobile phone (client), but the mobile phone is far away from the AP, so that the video is still blocked, and at this time, the mobile phone and the AP are still in a state of establishing a connection.

Disclosure of Invention

The embodiment of the disclosure provides an AP access method, an AP, a client and a communication system.

The embodiment of the disclosure provides a method for accessing an AP, which is applied to the AP and comprises the following steps:

receiving a detection request message sent by a client, and acquiring a first signal strength indicator (RSSI) for receiving the detection request message;

and sending a detection response message to the client, wherein the detection response message carries a first RSSI (received signal strength indicator), so that the client judges whether to access the AP or not according to the first RSSI carried in the detection response message.

Wherein, the method also comprises:

and periodically sending a Beacon message, wherein the Beacon message carries the target RSSI allowed to be accessed to the AP.

Wherein, the enabling the client to judge whether to access the AP according to the first RSSI carried in the probe response message includes:

and the client compares the first RSSI with the recorded target RSSI, and selects whether to access the AP or not according to the comparison result.

Wherein the selecting whether to access the AP according to the comparison result includes:

when the first RSSI is greater than or equal to the target RSSI, sending an access request to the AP, and accessing the AP; alternatively, the first and second electrodes may be,

and when the first RSSI is smaller than the target RSSI, the AP is not accessed.

It can be seen from the above method that in the embodiment of the present disclosure, the AP may send a response packet carrying the first RSSI to the client, so that the client determines whether to access the AP according to a comparison result between the first RSSI and the target RSSI, thereby avoiding a problem that the client and the AP try to connect repeatedly and occupy an air interface resource due to a weak signal.

The embodiment of the present disclosure further provides a method for accessing an AP, where the method is applied to a client, and the method includes:

receiving a Beacon message sent by an AP, wherein the Beacon message carries a target RSSI (received signal strength indicator) allowing to be accessed to the AP;

sending a detection request message to the AP according to the Beacon message;

receiving a detection response message sent by an AP, wherein the detection response message carries a first RSSI (received signal strength indicator) of the detection request message received by the AP;

and accessing the AP according to the comparison result of the first RSSI and the target RSSI.

Wherein the accessing the AP according to the comparison result of the first RSSI and the target RSSI comprises:

when the comparison result of the first RSSI and the target RSSI is greater than or equal to the target RSSI, accessing the AP; alternatively, the first and second electrodes may be,

and when the comparison result of the first RSSI and the target RSSI is less than the target RSSI, not accessing the AP.

According to the embodiment, the client can determine whether to access the AP according to the detection response message which is sent by the AP and carries the first RSSI and the comparison result of the first RSSI and the target RSSI, so that the problems that the connection is repeatedly tried due to weak signals between the client and the AP and the air interface resources are occupied are solved.

An embodiment of the present disclosure further provides a communication system, where the communication system includes: an AP and a client side, wherein the AP comprises a client side,

the AP periodically sends a Beacon message, wherein the Beacon message carries a target RSSI (received signal strength indicator) which is allowed to be accessed to the AP;

the client receives the Beacon message and records the target RSSI;

the client sends a detection request message to the AP according to the Beacon message;

the AP records a first RSSI (received signal strength indicator) for receiving the detection request message and sends a detection response message to the client, wherein the detection response message carries the first RSSI;

and the client accesses the AP according to the comparison result of the first RSSI and the target RSSI in the probe response message.

Wherein, the accessing of the AP by the client according to the comparison result between the first RSSI in the probe response message and the target RSSI comprises:

An embodiment of the present disclosure further provides an AP, where the AP includes:

the receiving module is used for receiving a detection request message sent by a client and acquiring a first signal strength indicator (RSSI) for receiving the detection request message;

and the sending module is used for sending a detection response message to the client, wherein the detection response message carries a first RSSI (received signal strength indicator), so that the client judges whether to access the AP or not according to the first RSSI carried in the detection response message.

An embodiment of the present disclosure further provides a client, where the client includes:

the receiving module is used for receiving a Beacon message sent by the AP, wherein the Beacon message carries a target RSSI (received signal strength indicator) which is allowed to be accessed to the AP;

the sending module is used for sending a detection request message to the AP according to the Beacon message;

the receiving module is further configured to receive a probe response message sent by an AP, where the probe response message carries a first RSSI of the AP receiving the probe request message;

and the processing module is used for accessing the AP according to the comparison result of the first RSSI and the target RSSI.

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 illustrating a process of establishing a connection between a client and an AP according to an embodiment of the present disclosure.

Fig. 2 is a flowchart illustrating a method for accessing an AP according to an embodiment of the present disclosure.

Fig. 3 is a flowchart illustrating a method for accessing 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.

As shown in fig. 1, the current process of accessing the AP by the Client (Client) is as follows:

an AP (Access Point) periodically sends a Beacon message to notify wireless services, and a client monitors the Beacon message sent by the AP to discover the wireless services.

The client actively sends a Probe Request message; after receiving the Probe Request message, the AP sends a Probe Response message carrying wireless service information; the client discovers the wireless service by receiving the Probe Response.

The client selects a proper wireless service and sends an Authentication Request message; and the AP sends an Authentication Response message after receiving the Authentication Request and responds to the client Request.

The client side continuously sends (Re) Association Request message, and the AP receives the Request to send (Re) Association Response message

And the client establishes connection with the AP to complete.

In the process of establishing the connection between the client and the AP, when the client is far from the AP, the sending and receiving rates of the packet are generally low, the communication process occupies a long wireless air interface time, and the air interfaces used by other surrounding clients are affected, so that the access of the weak signal clients is generally denied by the AP in order to improve the overall network communication quality, reduce the time delay and improve the throughput.

At present, the method for rejecting the access of the weak signal client by the AP mainly comprises the following steps:

one is that the AP compares the RSSI of the received Probe Request, Authentication Request, and (Re) Association Request message with the weak signal RSSI threshold, and if the RSSI is lower than the threshold, no corresponding response is performed, and the client cannot receive the corresponding response message and cannot access the AP.

According to the method, the client cannot sense the reason that the AP cannot be accessed, connection is generally tried for multiple times, the service is considered to be unavailable after the connection is unsuccessfully tried for multiple times, automatic retry is not performed any more, and if the user needs to access the AP, manual connection is needed, so that access experience is influenced.

The other is that the AP receives the RSSI of the (Re) Association Request message and compares the RSSI with the RSSI threshold of the weak signal, if the RSSI is lower than the threshold, the AP refuses the access of the wireless client, and sends the (Re) Association Response message carrying the MBO-OCE information element with the Status code of 34, so that the RSSI is enhanced to the designated difference value at the designated time, and the (Re) Association is initiated again.

The method has the advantages that the client side needs to initiate association once to identify the network inaccessibility, and meanwhile, if a plurality of service information exists, the client side cannot quickly sense the weak signal inaccessibility service to continue finding the next service, and can also respond to the access experience.

In order to solve the above technical problems, an embodiment of the present disclosure provides a method for accessing an AP, as shown in fig. 2, where the method is applied to an AP, and the method includes:

s201, receiving a detection request message sent by a client, and acquiring a first signal strength indicator (RSSI) for receiving the detection request message;

s202, sending a detection response message to the client, wherein the detection response message carries a first RSSI, so that the client judges whether to access the AP or not according to the first RSSI carried in the detection response message.

In this embodiment, the AP periodically broadcasts and sends a Beacon packet, where the Beacon packet carries a target RSSI that allows access to the AP. The Beacon message is broadcast, so that a client in the range of the AP can receive the Beacon message, after the client receives the Beacon message sent by the AP, a target RSSI in the Beacon message can be obtained and recorded, the target RSSI represents a threshold RSSI accessed to the AP, the target RSSI specifically represents that the client does not access the AP if the RSSI between the client and the AP is lower than the target RSSI, and otherwise, the client accesses the AP if the RSSI between the client and the AP is greater than or equal to the target RSSI.

In step S201, the Probe Request message may be a Probe Request message, and in an example, after the client receives a Beacon message sent by the AP, the client selects a wireless service to be accessed according to the Beacon message, records a target RSSI carried in the Beacon message, and sends the Probe Request message to the AP.

In step S202, the Probe Response packet sent by the AP to the client may be a Probe Response packet, and the Probe Response packet carries the first RSSI.

The first RSSI is an RSSI obtained when the AP receives a Probe Request message sent by a client, that is, the first RSSI can represent an RSSI between the client and the AP.

In this embodiment, after the AP sends the Probe Response message to the client, the client may compare the first RSSI with the target RSSI recorded by the client, and access the AP according to the comparison result.

Specifically, when the comparison result obtained by the client is that the first RSSI is greater than or equal to the target RSSI, it indicates that the signal between the client and the AP is not a weak signal, and the client can access the AP according to the subsequent procedure. Otherwise, when the comparison result obtained by the client is that the first RSSI is smaller than the target RSSI, it indicates that the client and the AP belong to a weak signal, and the client does not access the AP any more.

According to the embodiment, the AP can send the Beacon message carrying the target RSSI to the client, the client-enabled weak signal judgment mechanism for obtaining the Beacon message is used, and the AP is selected to be accessed according to the judgment result, so that the problems that the connection is repeatedly tried due to weak signals between the client and the AP, and air interface resources are occupied are solved.

An embodiment of the present disclosure further provides a method for accessing an AP, as shown in fig. 3, where the method is applied to a client, and the method includes:

s301, receiving a Beacon message sent by an AP, wherein the Beacon message carries a target RSSI (received signal strength indicator) allowing to be accessed to the AP;

s302, sending a detection request message to the AP according to the Beacon message;

s303, receiving a detection response message sent by an AP, wherein the detection response message carries a first RSSI (received signal strength indicator) of the detection request message received by the AP;

s304, accessing the AP according to the comparison result of the first RSSI and the target RSSI.

In step S302, the Probe Request message sent by the client to the AP is a Probe Request message.

In step S303, after receiving the Probe Request message, the AP sends a Probe Response message carrying an access control information element and an access RSSI information element; wherein, the RSSI in the access RSSI information element is the first RSSI of the AP receiving Probe Request message.

In step S303, the Probe Response message sent by the AP may also carry the target RSSI, so as to prevent the client from not intercepting Beacon, and actively sending the Probe Request to scan the service.

In step S304, when the comparison result between the first RSSI and the target RSSI is greater than or equal to the first RSSI, accessing the AP; alternatively, the first and second electrodes may be,

Specifically, after receiving the Probe Response, the client analyzes an access control information element and an access RSSI information element (first RSSI) carried in the message; comparing the difference between the two;

if the access RSSI value is larger than or equal to the lowest RSSI threshold value, the Authentication Request is sent to continue to be accessed

If the access RSSI value is smaller than the lowest RSSI threshold value, the Authentication Request is not sent for the moment to initiate access;

in this embodiment, if the client stores a plurality of wireless Services (APs), the client continues to detect another wireless service, repeats the above steps, and selects an AP whose signal strength satisfies the access condition.

If the client only stores one wireless service, the client continuously monitors the Beacon message, and repeats the steps after the RSSI signal is determined to be strengthened according to the RSSI when the Beacon is received.

It can be seen again from the above embodiments that the AP can send a Beacon packet carrying a target RSSI to the client, and use the client-enabled weak signal determination mechanism that obtains the Beacon packet, and select to access the AP according to the determination result, thereby avoiding the problems of repeated attempted connection between the client and the AP due to weak signals and occupation of air interface resources.

An embodiment of the present disclosure further provides a communication system, including: an AP and a client side, wherein the AP comprises a client side,

the client receives the Beacon message and records the target RSSI;

In this embodiment, there may be a plurality of APs and clients, and this embodiment is only illustrated by one AP and one client.

In this embodiment, the accessing, by the client, the AP according to the comparison result between the first RSSI in the probe response message and the target RSSI includes:

Based on the foregoing method embodiments, an embodiment of the present disclosure further provides an AP, where the AP includes:

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

1. A method for accessing an AP, the method being applied to the AP and comprising:

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein the enabling the ue to determine whether to access the AP according to the first RSSI carried in the probe response message comprises:

4. The method of claim 3, wherein selecting whether to access the AP according to the comparison comprises:

5. A method for accessing an AP, the method being applied to a client, the method comprising:

sending a detection request message to the AP according to the Beacon message;

6. The method of claim 5, wherein accessing the AP according to the comparison of the first RSSI to a target RSSI comprises:

7. A communication system, the communication system comprising: an AP and a client side, wherein the AP comprises a client side,

the client receives the Beacon message and records the target RSSI;

8. The communication system according to claim 7, wherein the accessing of the AP by the ue according to the comparison result between the first RSSI in the probe response message and the target RSSI comprises:

9. An AP, the AP comprising:

10. A client, the client comprising: