CN111988832B

CN111988832B - Spectrum navigation method, device, equipment and system

Info

Publication number: CN111988832B
Application number: CN201910440912.3A
Authority: CN
Inventors: 石冬雪
Original assignee: Nail Holding Cayman Co ltd
Current assignee: Nail Holding Cayman Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2023-08-15
Anticipated expiration: 2039-05-24
Also published as: CN111988832A

Abstract

The embodiment of the invention provides a frequency spectrum navigation method, a device, equipment and a system, wherein the method comprises the following steps: the method comprises the steps that a plurality of APs respond to a detection request message sent by a terminal, the frequency band support information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each of the APs are determined, the frequency band support information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each of the APs are reported to an AC, and therefore the AC determines the optimal frequency band of the optimal AP from the APs; the AC sends indication information to a plurality of APs to indicate that connection is established with the terminal in the optimal frequency band of the optimal AP; and the plurality of APs process the detection request message according to the indication information so that the terminal and the optimal AP are connected through the optimal frequency band. The AC decides the AP and the frequency band which are more suitable for access for the terminal according to the signal intensity of the terminal on each frequency band of each AP detected by the AC and the frequency band supporting information of the terminal.

Description

Spectrum navigation method, device, equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a system for spectrum navigation.

Background

With the popularity of wireless local area networks, dual-frequency terminal devices, dual-frequency Access Points (APs) have been common. The main communication frequency bands specified by the wireless local area network standard IEEE802.11 include: the two frequency bands of 2.4GHz and 5GHz are mainly supported by the current dual-frequency terminal equipment and dual-frequency AP.

Before the dual-frequency AP appears, only a single-frequency AP exists, and the frequency band used by the single-frequency AP is the 2.4GHz frequency band, so that terminal equipment supporting the 2.4GHz frequency band can access the network through the single-frequency AP. However, when the number of terminals accessed by the single-frequency AP is large, serious co-frequency interference exists among a plurality of terminal devices, and therefore, the dual-frequency AP is provided to shunt the load pressure of the 2.4GHz band through the 5GHz band.

In practical application, the dual-frequency AP appears to have the same service set identifier (Service Set Identifier, abbreviated SSID) externally. Therefore, when a user wants to connect the dual-frequency terminal device to the network, the surrounding SSID is searched, and after the user selects a certain SSID, the dual-frequency terminal device is connected to a certain frequency band of a certain dual-frequency AP corresponding to the SSID, and the connection is often random, so that the problem that the network quality of the dual-frequency terminal device is poor is likely to occur.

Disclosure of Invention

The embodiment of the invention provides a frequency spectrum navigation method, a device, equipment and a system, which allocate a proper frequency band of a proper AP for a terminal to access the network.

In a first aspect, an embodiment of the present invention provides a spectrum navigation method, applied to an access controller, where the method includes:

receiving frequency band supporting information of a terminal reported by a plurality of access points, wherein the signal intensities respectively correspond to the frequency bands supported by the access points by the detection request messages sent by the terminal;

determining an optimal frequency band of an optimal access point from the plurality of access points according to the frequency band supporting information of the terminal and signal intensities respectively corresponding to the detection request message on the frequency bands supported by the plurality of access points;

and sending indication information to the plurality of access points, wherein the indication information is used for indicating the optimal access point to establish connection with the terminal in the optimal frequency band.

In a second aspect, an embodiment of the present invention provides a spectrum navigation apparatus, applied to an access controller, including:

the receiving module is used for receiving the frequency band supporting information of the terminal reported by the plurality of access points and respectively corresponding signal strength of the detection request message sent by the terminal on the frequency bands supported by the plurality of access points;

The determining module is used for determining the optimal frequency band of the optimal access point from the plurality of access points according to the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency bands supported by the plurality of access points;

and the sending module is used for sending indication information to the plurality of access points, wherein the indication information is used for indicating the optimal access point to establish connection with the terminal in the optimal frequency band.

In a third aspect, an embodiment of the present invention provides an electronic device, including a first processor and a first memory, where the first memory stores executable code, and when the executable code is executed by the first processor, at least the spectrum navigation method described in the first aspect may be implemented.

In a fourth aspect, embodiments of the present invention provide a non-transitory machine-readable storage medium having stored thereon executable code that, when executed by a processor of an electronic device, may implement at least the spectral navigation method of the first aspect.

In a fifth aspect, an embodiment of the present invention provides a spectrum navigation method, applied to an access point, where the method includes:

Responding to a detection request message sent by a terminal, and determining the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by the access point;

reporting the frequency band supporting information of the terminal and the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the access point to an access controller;

receiving indication information sent by the access controller, wherein the indication information is used for indicating that connection is established between the optimal frequency band of the optimal access point and the terminal, and the access controller determines the optimal frequency band of the optimal access point from a plurality of access points which receive the detection request message according to the frequency band support information of the terminal and the signal intensity respectively corresponding to the detection request message on the frequency band supported by the access point;

and processing the detection request message according to the indication information.

In a sixth aspect, an embodiment of the present invention provides a spectrum navigation apparatus, applied to an access point, including:

the determining module is used for responding to the detection request message sent by the terminal and determining the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by the access point;

The sending module is used for reporting the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by the access point to the access controller;

the receiving module is used for receiving indication information sent by the access controller, wherein the indication information is used for indicating that the connection is established between the optimal frequency band of the optimal access point and the terminal, and the access controller determines the optimal frequency band of the optimal access point from a plurality of access points which receive the detection request message according to the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by the access point;

and the processing module is used for processing the detection request message according to the indication information.

In a seventh aspect, an embodiment of the present invention provides an electronic device, including a second processor, and a second memory, where the second memory stores executable code, and when the executable code is executed by the second processor, at least the spectrum navigation method described in the fifth aspect may be implemented.

In an eighth aspect, embodiments of the present invention provide a non-transitory machine-readable storage medium having stored thereon executable code that, when executed by a processor of an electronic device, can implement at least the spectrum navigation method in the fifth aspect.

In a ninth aspect, an embodiment of the present invention provides a spectrum navigation system, including:

the system comprises a terminal, a plurality of access points and an access controller, wherein the access points correspond to the same service set identifier;

the access points are used for responding to the detection request message sent by the terminal, determining the frequency band supporting information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each access point, sending the frequency band supporting information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each access point to the access controller, and processing the detection request message according to the indication information sent by the access controller;

the access controller is configured to determine an optimal frequency band of an optimal access point from the multiple access points according to the frequency band support information of the terminal and signal strengths corresponding to the probe request messages on the frequency bands supported by the multiple access points, and send indication information to the multiple access points, where the indication information is used to instruct the optimal access point to establish connection with the terminal in the optimal frequency band.

In a tenth aspect, an embodiment of the present invention provides a spectrum navigation method, applied to an access point, where the method includes:

and transmitting the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the access points to the terminal, so that the terminal determines the optimal frequency band of the optimal access point from the plurality of access points according to the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the plurality of access points to connect.

In an eleventh aspect, an embodiment of the present invention provides a spectrum navigation apparatus, applied to an access point, including:

and the sending module is used for sending the signal intensities respectively corresponding to the frequency bands supported by the access points to the terminal, so that the terminal determines the optimal frequency band of the optimal access point from the plurality of access points to connect according to the signal intensities respectively corresponding to the frequency bands supported by the access points.

In a twelfth aspect, an embodiment of the present invention provides an electronic device, including a third processor and a third memory, where the third memory stores executable code, and when the executable code is executed by the third processor, at least the spectrum navigation method described in the tenth aspect may be implemented.

In a twelfth aspect, embodiments of the present invention provide a non-transitory machine-readable storage medium having executable code stored thereon, which when executed by a processor of an electronic device, can implement at least the spectrum navigation method in the tenth aspect.

In the embodiment of the present invention, it is assumed that there are a plurality of APs corresponding to the same SSID, and all or part of the plurality of APs are dual-frequency APs. Therefore, when a certain user wants to network the terminal, searching surrounding SSIDs, and after selecting a certain SSID, the terminal broadcasts a detection request message in a frequency band supported by the terminal so as to detect surrounding APs corresponding to the SSID. If a certain AP receives the probe request message in a certain frequency band, the AP determines, on the one hand, frequency band support information of the terminal, and on the other hand, determines signal strength corresponding to the probe request message in the frequency band, and sends the frequency band support information of the terminal and the signal strength corresponding to the frequency band to an access controller (Access Controller, abbreviated as AC).

Based on the above, the AC may receive the frequency band supporting information of the terminal reported by the multiple APs and the signal intensities respectively corresponding to the frequency bands supported by each AP in the probe request packet sent by the terminal. The AC determines the optimal frequency band of the optimal access point suitable for the terminal from the plurality of APs according to the frequency band supporting information of the terminal and the signal intensity respectively corresponding to the frequency bands supported by the plurality of APs by the detection request message, and further sends indication information to the plurality of APs so as to inform the plurality of APs of the optimal access point and what the optimal frequency band is. Therefore, the plurality of APs correspondingly process the probe request message of the terminal based on the indication information, namely, the optimal AP in the plurality of APs establishes connection with the terminal in the optimal frequency band, and other APs do not establish connection with the terminal.

Through the scheme, when the terminal wants to network, the signal intensity information of the terminal on the AP frequency band which can be detected by the terminal is collected at the AC side, and the AC is used for deciding which frequency band which is more suitable for being accessed to which AP by combining the frequency band supporting information of the terminal, namely which frequency band is supported by the terminal, so that the network quality of the terminal after networking is ensured, and the load balancing of each frequency band of the AP is also facilitated to be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a spectrum navigation system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a spectrum navigation strategy according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of another spectrum navigation strategy according to an embodiment of the present invention;

FIG. 4 is an interactive flowchart of a spectrum navigation method according to an embodiment of the present invention;

FIG. 5 is a flowchart of a spectrum navigation method according to an embodiment of the present invention;

FIG. 6 is a flow chart of one implementation of step 501;

FIG. 7 is a flowchart of another spectrum navigation method according to an embodiment of the present invention;

FIG. 8 is a flowchart of another spectrum navigation method according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a spectrum navigation device according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of an electronic device corresponding to the spectrum navigation apparatus provided in the embodiment shown in fig. 9;

fig. 11 is a schematic structural diagram of another spectrum navigation device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an electronic device corresponding to the spectrum navigation apparatus provided in the embodiment shown in fig. 11;

fig. 13 is a schematic structural diagram of another spectrum navigation device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an electronic device corresponding to the spectrum navigation apparatus provided in the embodiment shown in fig. 13.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well. Unless the context clearly indicates otherwise, "plurality" generally includes at least two.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

In addition, the sequence of steps in the method embodiments described below is only an example and is not strictly limited.

Fig. 1 is a schematic diagram of a spectrum navigation system according to an embodiment of the present invention, where, as shown in fig. 1, the system includes: the system comprises a terminal, a plurality of APs and an AC, wherein the plurality of APs correspond to the same service set identifier.

The method comprises the steps of responding to a detection request message sent by a terminal, determining the frequency band support information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each of the plurality of APs, sending the frequency band support information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each of the plurality of APs to an AC, and processing the detection request message according to indication information sent by the AC.

And the AC is used for determining the optimal frequency band of the optimal access point from the plurality of APs according to the frequency band supporting information of the terminal and the signal intensity respectively corresponding to the frequency bands supported by the plurality of APs by the detection request message, and sending indication information to the plurality of APs, wherein the indication information is used for indicating the optimal access point to establish connection with the terminal in the optimal frequency band.

In the embodiment of the present invention, it is assumed that there are a plurality of APs corresponding to the same SSID, and all or part of the plurality of APs are dual-frequency APs. Herein, an AP supporting only the first frequency band may be referred to as a single frequency AP, and an AP supporting both the first frequency band and the second frequency band may be referred to as a dual frequency AP. In combination with the current widely used frequency band situation of the AP, herein, the first frequency band may be a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band.

The terminal may be a single-frequency terminal or a dual-frequency terminal, corresponding to the AP being a single-frequency AP or a dual-frequency AP. Herein, the single-frequency terminal may be a terminal supporting only 2.4GHz band, and the dual-frequency terminal is a terminal supporting 2.4GHz band and 5GHz band.

In a practical application environment, for example, a plurality of networks, that is, a plurality of SSIDs, are possibly deployed in an enterprise, and are assumed to be ssid_ A, SSID _b, as shown in fig. 1, and the APs corresponding to ssid_a are assumed to be AP1, AP2 and AP3, and the APs corresponding to ssid_b include AP4 and AP5. If the user wants to network his terminal, the surrounding SSID is searched for by the terminal. Assuming ssid_ A, SSID _b is all searched out, and assuming ssid_a is selected by the user, the terminal is triggered to enter the probing phase. In the detection stage, the terminal broadcasts a detection request message in the frequency band supported by the terminal so as to detect the surrounding APs corresponding to the SSID_A. Thus, if the AP4 or the AP5 corresponding to the ssid_b receives the probe request packet sent by the terminal, the probe request packet may be discarded.

In this embodiment, the plurality of APs refer to a plurality of APs that receive a probe request message sent by a terminal and correspond to an SSID in response to a user selecting the SSID.

In fact, if the terminal of the user only supports the 2.4GHz band on the premise that the user obtains the access password corresponding to the SSID, it can be understood that the terminal is only possible to connect with a single-frequency AP supporting the 2.4GHz band; if the terminal supports 2.4GHz and 5GHz, the terminal can be connected to a single-frequency AP supporting 2.4GHz and a dual-frequency AP supporting 2.4GHz and 5 GHz. If the signal coverage areas of the APs cover the current position of the terminal, how to allocate more suitable APs and more suitable frequency bands thereof from the APs to the terminal is the problem to be solved by the spectrum navigation method provided by the embodiment of the invention.

Specifically, in practical application, when a user wants to network his terminal, the terminal searches for surrounding SSIDs through the terminal, and after selecting a certain SSID, the terminal broadcasts a probe request message in a frequency band supported by the terminal to probe surrounding APs corresponding to the SSID. For example, assuming that the terminal supports a 2.4GHz band and a 5GHz band, in an alternative embodiment, the terminal may broadcast the probe request message in the 2.4GHz band and also broadcast the probe request message in the 5GHz band. In an alternative embodiment, the terminal may start to broadcast probe request messages only in the 2.4GHz band. The probe request message may carry information such as a media access control (Media Access Control, abbreviated as MAC) address of the terminal, an SSID selected by a user, and the like.

For any one of the APs, if the probe request message sent by the terminal is monitored through a certain frequency band, it is indicated that the terminal is located in the coverage area of the frequency band of the AP. For example, if the terminal broadcasts the probe request message in the 2.4GHz band, a certain AP monitors the probe request message, which indicates that the terminal is located in the coverage area of the 2.4GHz band of the AP.

For any one of the APs, if the AP receives the probe request message sent by the terminal through the first frequency band, the signal strength corresponding to the probe request message on the first frequency band of the AP may be determined, and of course, if the AP also receives the probe request message sent by the terminal through the second frequency band, the signal strength corresponding to the probe request message on the second frequency band of the AP may be determined, and the determined signal strength may be reported to the AC. Thus, the AC may receive signal strength information reported by multiple APs that receive the probe request packet of the terminal, where the signal strength information reported by each AP corresponds to the frequency band in which the probe request packet is received. That is, if a certain AP receives, on a first frequency band, a first probe request packet sent by a terminal through the first frequency band, the signal strength information reported by the AP includes the signal strength corresponding to the first probe request packet on the first frequency band of the AP, and if the AP also receives, on a second frequency band, a second probe request packet sent by the terminal through the second frequency band, the signal strength information reported by the AP also includes the signal strength corresponding to the second probe request packet on the second frequency band of the AP.

When any one AP of the APs receives a probe request message sent by a terminal through a certain frequency band, the AP may determine the frequency band supporting information of the terminal in addition to the calculation of the signal strength. The frequency band supporting information of the terminal is determined to be whether the terminal supports only the first frequency band or supports the first frequency band and the second frequency band, that is, whether the terminal is a single-frequency terminal or a dual-frequency terminal. Several alternative implementations of the AP determining the frequency band support information of the terminal will be described in the following embodiments, where only emphasis is placed on the embodiment, and the AP reports the determined frequency band support information of the terminal to the AC.

In practice, the AP may send a notification message to the AP, where the notification message includes the MAC address of the terminal, the band support information of the terminal, and the signal strength corresponding to the probe request packet sent by the terminal on the band supported by the terminal.

For ease of understanding, as shown in fig. 1, assume that the user selects ssid_a, assume that the AP corresponding to ssid_a is: AP1, AP2 and AP3, assuming that AP1 and AP2 are dual-frequency APs and AP3 is a single-frequency AP. Assume that the signal strength of a probe request message received by an AP1 in the 2.4GHz band is P1, the signal strength of a probe request message received by the AP1 in the 5GHz band is P2, the signal strength of a probe request message received by the AP2 in the 2.4GHz band is P3, the signal strength of a probe request message received by the AP2 in the 5GHz band is P4, and the signal strength of a probe request message received by the AP3 in the 2.4GHz band is P5. The determination result of the frequency band support information of the terminal indicates that the terminal is a dual-frequency terminal. Assuming that the MAC address of the terminal is denoted as MAC1, thus, as shown in fig. 1, the notification message reported by AP1 to the AC may be denoted as (MAC 1, dual-frequency, 2.4ghz: p1,5ghz: p 2); the notification message reported by the AP2 to the AC can be expressed as (MAC 1, double frequency, 2.4GHz: P3,5GHz: P4); the notification message reported by AP3 to the AC may be represented as (MAC 1, dual frequency, 2.4ghz: p 5).

Based on this, the AC can learn by summarizing the notification messages described above: the current terminal to be networked is a terminal with the MAC address of MAC1, the terminal is a dual-frequency terminal, the APs which can be detected by the terminal are AP1, AP2 and AP3, and the detection request messages sent by the terminal respectively correspond to the signal intensities on the frequency bands supported by the three APs.

Furthermore, the AC determines the best frequency band of the best access point from the APs according to the frequency band supporting information of the terminal and the signal intensities corresponding to the frequency bands supported by the APs respectively by the probe request message, and the AC may send the determination result to the APs with the indication information.

In this way, the plurality of APs know whether or not the AP itself is the best AP, and when the AP itself is determined to be the best AP, the terminal is guided to establish connection with the AP itself in the best frequency band, and if the AP itself is determined not to be the best AP, the terminal is not established with the connection.

In fig. 1, assuming that the best access point finally determined by the AC is AP1 and the best frequency band is the 5GHz frequency band, the AP1 will establish a connection with the terminal in the best frequency band, and the AP2 and the AP3 will not establish a connection with the terminal.

Wherein, determining the optimal frequency band of the optimal access point in the plurality of APs can be implemented as: if the terminal supports the first frequency band (2.4 GHz) and the second frequency band (5 GHz), determining an optimal AP from the plurality of APs according to the signal strength of the detection request message corresponding to the second frequency band (5 GHz) supported by the plurality of APs, wherein the optimal frequency band is the second frequency band (5 GHz). If the terminal only supports the first frequency band (2.4 GHz), determining an optimal AP from the plurality of APs according to the signal strength corresponding to the probe request message on the first frequency band (2.4 GHz) supported by each of the plurality of APs, wherein the optimal frequency band is the first frequency band (2.4 GHz).

In connection with the example in fig. 1, the above procedure is summarized as that if the terminal is a dual-frequency terminal, signal intensities respectively corresponding to the probe request messages on the 5GHz frequency bands of the three APs are obtained. Because the AP3 does not receive the probe request message through the 5GHz band, the signal strength of the probe request message corresponding to the 5GHz band of the AP3 can be considered to be infinitely small and ignored. And comparing the signal intensities P2 and P4 of the detection request message on the 5GHz frequency bands of the AP1 and the AP2, and if the P2 is larger than the P4, determining that the optimal access point is the AP1 and the optimal frequency band is the 5GHz frequency band.

Conversely, if the terminal is a single-frequency terminal, the signal intensities respectively corresponding to the detection request messages on the 2.4GHz frequency bands of the three APs are obtained. And comparing the signal intensities P1, P3 and P5 of the detection request messages on the 2.4GHz frequency bands of the AP1, the AP2 and the AP3, and if the P1 is larger than the P3 and the P4, determining that the optimal access point is the AP1 and the optimal frequency band is the 2.4GHz frequency band.

The decision strategy of the AC described above is more intuitively illustrated in connection with fig. 2 and 3.

In fig. 2, it is assumed that there are three APs APa, APb, APc, where APa and APc are dual-frequency APs and APb is a single-frequency AP. The terminal is assumed to be a dual frequency terminal. The distances between the three APs and the terminal are as follows from the near to the far: APb, APc, APa. Because the terminal is a dual-frequency terminal, the AC preferentially allocates a 5GHz frequency band to the terminal, and therefore, the dual-frequency APc which is closer to the terminal is finally determined to be the optimal AP, and the terminal and the APc are connected through the 5GHz frequency band.

In fig. 3, it is still assumed that there are three APs APa, APb, APc, where APa and APc are dual-frequency APs and APb is a single-frequency AP. At this time, it is assumed that the terminal is a single frequency terminal. The distances between the three APs and the terminal are as follows from the near to the far: APb, APc, APa. Because the terminal is a single-frequency terminal, the AC preferentially allocates a 2.4GHz frequency band to the terminal, so that the single-frequency APb which is closer to the terminal is finally determined to be the optimal AP, and the terminal and the APb are connected through the 2.4GHz frequency band.

In an alternative embodiment, after the AC determines the best frequency band of the best AP and informs the multiple APs of the best frequency band, the process of establishing a connection between the best AP of the multiple APs and the terminal with the best frequency band may be implemented as follows: the optimal AP sends a detection response message to the terminal in the optimal frequency band, so that the terminal enters the next stage based on the detection response message: and in the association stage, the terminal sends an association request message to the optimal AP in the optimal frequency band, and the optimal AP sends an association confirmation message to the terminal, so that the optimal AP and the terminal are connected through the optimal frequency band. In contrast, the process of the probe request message sent by the non-optimal AP among the multiple APs to the terminal may be implemented as follows: the non-optimal AP discards the probe request message, i.e., does not respond to the probe request message, thereby making the terminal unaware of its existence.

Through the determination strategy of the optimal frequency band of the optimal access point, the dual-frequency terminal can be preferentially connected to the 5GHz frequency band at a shorter distance, and the terminal can enjoy better network quality due to the advantages of high speed and small interference of the 5GHz frequency band. When the terminal is a single-frequency terminal, the single-frequency terminal can be connected to a 2.4GHz frequency band at a shorter distance so as to ensure the signal quality. The magnitude of the signal strength often reflects the distance between the AP and the terminal, and in general, the stronger the signal strength, the closer the distance.

Fig. 4 is an interaction flow chart of a spectrum navigation method according to an embodiment of the present invention, as shown in fig. 4, may include the following steps:

401. and the plurality of APs send the service quality information corresponding to the frequency bands supported by the plurality of APs to the AC.

402. The terminal sends out a detection request message.

403. The plurality of APs respond to the detection request message sent by the terminal, and the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency bands supported by the plurality of APs are determined.

404. And the plurality of APs report the frequency band supporting information of the terminal and the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the APs to the AC.

405. And the AC determines the optimal frequency band of the optimal AP from the plurality of APs according to the frequency spectrum support information of the terminal, the signal intensity respectively corresponding to the detection request message on the frequency bands respectively supported by the plurality of APs and the service quality information respectively corresponding to the frequency bands respectively supported by the plurality of APs.

406. The AC transmits indication information to the plurality of APs to indicate the best AP to establish connection with the terminal in the best frequency band.

407. The best AP establishes a connection with the terminal.

408. The optimal AP reports the network quality change information of the terminal to the AC.

409. If the network quality change information of the terminal meets the set condition, the AC informs the optimal AP to disconnect the connection with the terminal.

410. The AC marks the best frequency band that the terminal is not allowed to access the best AP.

411. The best AP disconnects from the terminal.

412. The best AP marks the terminal as a terminal that is not allowed to access.

In this embodiment, each AP may report the corresponding qos information on each frequency band supported by the AP to the AC at regular time, so that the AC combines the qos information to decide the best frequency band of the best AP that is more suitable for the terminal.

Wherein, optionally, the quality of service information includes at least one of: and the load information respectively corresponding to the frequency bands supported by the plurality of APs is the network quality information of the accessed terminal respectively corresponding to the frequency bands supported by the plurality of APs.

It follows that the quality of service that an AP can currently provide can be reflected by the load information of the AP and the network quality information of the terminal that has accessed the AP.

For any AP, the load information corresponding to each supported frequency band may include one or more of the following: the method comprises the steps of utilizing a working channel in the current 2.4GHz frequency band, utilizing the working channel in the current 5GHz frequency band, carrying out overall packet loss rate of an AP, carrying out overall packet retransmission rate of the AP, and carrying out terminal number connection in the 2.4GHz frequency band and terminal number connection in the 5GHz frequency band.

For any AP, the network quality information of the accessed terminals respectively corresponding to the supported frequency bands may include one or more of the following: the method comprises the steps of current signal strength of a terminal, minimum signal strength of the terminal, maximum signal strength of the terminal, theoretical uplink speed of the terminal, theoretical downlink speed of the terminal, online time of the terminal, current connection frequency band of the terminal, total packet number and packet error rate sent by an AP to the terminal, total packet number and packet error rate received by the AP from the terminal, actual downlink speed of the terminal and signal to noise ratio.

In summary, according to the spectrum support information of the terminal, the signal strength corresponding to the probe request message on the frequency band supported by each of the plurality of APs, and the service quality information corresponding to the frequency band supported by each of the plurality of APs, the AC determines, from the plurality of APs, the core idea of determining the optimal frequency band of the optimal AP is:

When the terminal is a dual-frequency terminal, the AC preferentially selects a 5GHz frequency band as an optimal frequency band, and selects a dual-frequency AP with smaller load pressure and good network quality on the 5GHz frequency band from the dual-frequency APs as the optimal AP. Optionally, when the dual-frequency AP with the load pressure and the network quality meeting the requirements does not exist in the dual-frequency APs, selecting the single-frequency AP with the smaller load pressure and the good network quality from the single-frequency APs as the optimal AP, wherein the optimal frequency band is the 2.4GHz frequency band.

When the terminal is a single-frequency terminal, the AC selects a single-frequency AP with smaller load pressure and good network quality from the single-frequency APs as an optimal AP, and at the moment, the optimal frequency band is the 2.4GHz frequency band.

In addition, in an alternative embodiment, for any AP, if the corresponding qos information on the target frequency band supported by the AP meets the set condition, the target frequency band is set to be in the service set identifier hiding mode, i.e. the SSID hiding mode. Wherein the target frequency band is any frequency band supported by the AP. The set condition reflects that the service quality of the AP on the target frequency band is poor, for example, the number of terminals already accessed on the 2.4GHz frequency band has reached the set upper limit value, and so on. The AP sets the target frequency band to be in SSID hiding mode, specifically, the AP does not broadcast the beacon frame during the service quality of the target frequency band is continuously poor, so that the terminal does not find the existence of the beacon frame.

In addition, in an alternative embodiment, in order to accelerate the determination efficiency of the best frequency band of the best AP, since each AP may report the service quality information corresponding to each frequency band supported by each AP to the AC at regular time, the AC may delete the target frequency band of the target access point whose service quality does not meet the requirement in time according to the received service quality information corresponding to each frequency band supported by each of the plurality of APs, thereby reducing the calculation amount of the best frequency band participating in the best AP in the process of calculating the best frequency band of the best AP for the current terminal.

In addition, in another alternative embodiment, in the process of calculating the best frequency band of the best AP for a certain terminal, an AP associated with a setting tag may be deleted from multiple APs, where the setting tag indicates that the AP does not provide network access service for the terminal. In practical applications, the network manager may pre-configure which APs of the plurality of APs correspond to the same SSID, which APs may provide network access services to the user, and which APs may not provide network access services to the user due to being configured for a particular purpose. The network manager may tag the AP that does not provide the network access service to the user with a setup tag so that the AC deletes the AP having the setup tag from among the plurality of APs detected by the terminal.

When the AC decides the optimal frequency band of the optimal AP, the optimal AP may monitor the network quality change information of the terminal in the subsequent data transmission process after the optimal AP establishes a connection with the terminal through the optimal frequency band, and report the network quality change information of the terminal, such as a change in signal strength, a change in data transmission rate, a change in signal-to-noise ratio, and the like, to the AC. And when the AC discovers that the network quality change information of the terminal meets the set condition, notifying the optimal AP to disconnect the connection with the terminal. The set condition reflects that the network quality of the terminal becomes poor. The best AP disconnects from the terminal based on the AC notification and marks the terminal as a terminal not allowed to access, for example, adds the MAC address of the terminal to a blacklist for storing the terminal not allowed to access. In addition, the AC side may also mark that the terminal is not allowed to access the optimal frequency band of the optimal AP, so as to avoid the subsequent connection of the optimal frequency band of the optimal AP allocated to the terminal again in a certain time. After the terminal disconnects from the best AP, the networking process is triggered again, for example, a probe request message is sent again to probe a plurality of APs existing around, and the AC reallocates the best frequency band of the new best AP from the plurality of APs currently detected to connect.

Fig. 5 is a flowchart of a spectrum navigation method according to an embodiment of the present invention, where the spectrum navigation method may be performed by any AP of the plurality of APs shown in fig. 1. As shown in fig. 5, the method comprises the steps of:

501. the AP responds to the detection request message sent by the terminal, and determines the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by the AP.

502. And the AP reports the frequency band supporting information of the terminal and the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the AP to the AC.

From the foregoing, it can be seen that, according to the frequency band support information of the terminal reported by the multiple APs that receive the probe request message sent by the terminal and the signal intensities respectively corresponding to the frequency bands supported by the multiple APs in the probe request message, the AC determines the optimal frequency band of the optimal AP from the multiple APs.

503. And the AP receives indication information sent by the AC, wherein the indication information is used for indicating that connection is established with the terminal by the optimal frequency band of the optimal AP.

504. If the AP is the optimal AP, sending a detection response message to the terminal through the optimal frequency band, receiving an association request message sent by the terminal through the optimal frequency band, and sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal.

505. If the AP is not the best AP, the probe request message is discarded.

FIG. 6 is a flow chart of one implementation of step 501, as shown in FIG. 6, may include the steps of:

601. the AP responds to the detection request message sent by the terminal and extracts the first MAC address of the terminal from the detection request message.

602. And the AP queries the local cache library and the AC according to the first MAC address of the terminal to obtain the frequency band supporting information of the terminal.

As described above, when the user wants to connect his terminal to the network of a SSID, by selecting the SSID, the user triggers the terminal to broadcast a probe request message corresponding to the SSID.

If the terminal is connected to a certain SSID, in the process of connecting the terminal to the SSID, one or more APs corresponding to the SSID identify the frequency band supporting information of the terminal, and the identified frequency band supporting information of the terminal is stored temporarily in a local place and reported to an AC for permanent storage. And the terminal may be represented by its real MAC, so the AP and the AC may store the real MAC address of the terminal and its band support information. In an alternative embodiment, the real MAC address of the terminal is carried in the probe request message.

The reason why the AP temporarily stores only the identified frequency band support information of the terminal is that the storage resources of the AP are limited, and the connection and disconnection of the terminal at the AP are frequently changed, so that in order to ensure the effective utilization rate of the storage resources of the AP, the duration, such as one day, of the AP storing the frequency band support information of the terminal may be set.

Based on this, currently, if a certain AP receives a probe request packet of a terminal, a first MAC address of the terminal (in an alternative embodiment, the first MAC address is a real MAC address of the terminal) may be extracted from the probe request packet, and then whether there is band support information matching with the first MAC address is searched locally, if so, the band support information of the terminal is directly determined, and if not, an AC may be further searched with the first MAC address to determine whether there is band support information of the terminal in the AC. If the service set identifier exists in the AC, the frequency band supporting information of the terminal is directly determined, if the service set identifier does not exist in the AC, the terminal is in network connection with the SSID for the first time, and then the follow-up steps are executed.

603. If the frequency band supporting information of the terminal does not exist in the local cache library and the AC, if the AP receives a first detection request message sent by the terminal in a first frequency band, the AP discards the first detection request message, updates the discarding times of the first detection request message, and if the discarding times reach a set value within a set duration, or if the discarding times still do not receive a second detection request message sent by the terminal in a second frequency band within the set duration, the AP determines that the terminal only supports the first frequency band.

604. If the local cache library and the AC do not have the frequency band supporting information of the terminal, if the AP receives a second detection request message sent by the terminal in the second frequency band, the AP determines that the terminal supports the first frequency band and the second frequency band.

In practical application, if the terminal is a dual-frequency terminal, in an alternative embodiment, the terminal may send out the probe request message through the first frequency band and the second frequency band sequentially, where the probe request message sent out through the first frequency band is referred to as a first probe request message, and the probe request message sent out through the second frequency band is referred to as a second probe request message. Herein, the first frequency band may be a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band.

In practical applications, generally, when the terminal is configured to send out the first probe request message and the second probe request message, the first probe request message is sent out first, and then the second probe request message is sent out, so that, optionally, if the AP receives the first probe request message first, and then receives the second probe request message sent out by the terminal within a set time, it is determined that the terminal is a dual-frequency terminal, that is, it is determined that the terminal supports the first frequency band and the second frequency band.

In another alternative embodiment, the dual-band terminal may be configured to attempt to send the first probe request message in the first frequency band multiple times, and may switch to send the second probe request message in the second frequency band if the AP cannot be detected in the first frequency band finally. Therefore, if the AP receives the first probe request packet sent by the terminal in the first frequency band, the AP may discard the first probe request packet first, and update the discard times of the first probe request packet. Furthermore, if the number of times of discarding the first probe request message recorded in the set duration reaches a set value, or if the set duration has been reached and the second probe request message sent by the terminal in the second frequency band has not been received yet, it is determined that the terminal supports only the first frequency band.

That is, from a moment when the AP receives the first probe request message sent by the terminal, the AP starts a timer, and the timing duration of the timer is a set duration, for example, 10 seconds. At this time, the AP discards the first probe request packet without responding to the first probe request packet, and counts the number of times of discarding the first probe request packet. Because the terminal does not receive the probe response message, the terminal may send the first probe request message again, and if the timing duration has not yet arrived, the AP discards the first probe request message again. And the like, until the discarding times in the timing time length reach the set value, or the timing time length reaches, the second detection request message sent by the terminal is not received, and at the moment, the AP determines that the terminal is a single-frequency terminal. This is because if the terminal is a dual-frequency terminal, when it attempts to transmit the first probe request message multiple times without obtaining a response, it is likely to attempt to transmit the second probe request message, and if the terminal does not transmit the second probe request message late, it is indicated that the terminal is most likely a single-frequency terminal, and cannot transmit the second probe request message.

After determining the frequency band supporting information of the terminal, the AP may report the frequency band supporting information and the signal strength corresponding to the frequency bands supported by the AP, or even the quality of service information corresponding to the frequency bands supported by the AP to the AC.

It should be noted that, in the above embodiment, after determining the frequency band supporting information of the terminal, the AP may locally store the frequency band supporting information of the terminal, where the terminal identifier included in the frequency band supporting information of the terminal is represented by the real MAC address of the terminal, so that the AP locally temporarily stores the real MAC address of the terminal and the frequency band supporting information thereof, and may report the real MAC address of the terminal and the frequency band supporting information thereof to the AC for permanent storage. The first MAC address of the terminal included in the probe request message sent by the terminal may or may not be the real MAC address of the terminal. Whether the first MAC address is the real MAC address of the terminal is determined by the type of the terminal. The type of the terminal herein refers to the operating system type of the terminal.

In practical applications, terminals supporting some operating systems are currently regarded as terminals of the first type, and the terminals supporting some operating systems are the true MAC addresses of the terminals in the probing phase, i.e. in the probe request message sent. And for the terminals supporting some operating systems, the detection request message sent by the terminals carries the false MAC address of the terminal, and the terminals supporting the operating systems are regarded as the terminals of the second type.

In the process of terminal networking, the detection phase, the association phase and the data transmission phase are successively passed. In the detection stage, the terminal detects surrounding APs; in the association stage, the terminal establishes connection with a detected AP (the AP is the optimal AP in the previous stage); in the data transmission stage, the terminal performs normal data transmission based on the connection with a certain AP.

For the first type of terminal, both the probing phase and the association phase use real MAC addresses. However, for the second type of terminal, a false MAC address is used during the probing phase and a true MAC address is used during the association phase. Moreover, for terminals of the second type, the false MAC address carried in each probe request message it issues may be different during the probing phase.

Because of the existence of the two different types of terminals in practical application, the real MAC address of the terminal and the frequency band supporting information thereof are stored in the AP and the AC for accurately identifying the frequency band supporting information of the terminal.

Therefore, after receiving the probe request message sent by the terminal, the AP extracts the first MAC address of the terminal from the probe request message, and further determines the type of the terminal according to the first MAC address.

Specifically, the AP may maintain the MAC address feature information of the second type of terminal, and if the first MAC address matches the MAC address feature information, determine that the terminal is the second type of terminal, and otherwise determine that the terminal is the first type of terminal. The MAC address feature information is, for example: the partial bytes (e.g., the first three bytes) of the MAC address correspond to vendor information of the second type of terminal.

If the type of the terminal is determined to be the first type, the local cache library and the AC may be queried according to the first MAC address to obtain the band support information of the terminal, where the band support information of the terminal includes the first MAC address. The process of querying the local repository and the AC according to the first MAC address to obtain the band support information of the terminal may be referred to as the above-described steps in fig. 6.

If the type of the terminal is determined to be the second type, after receiving the detection request message sent by the terminal, the AP can send a corresponding detection response message to the terminal so as to enable the terminal to further carry out the next stage, namely an association stage. It can be understood that, if the AP is a probe request message received through the first frequency band, the AP will also send a probe response message in the first frequency band; if the AP is a probe request message received through the second frequency band, the AP will also send a probe response message in the second frequency band.

The terminal can enter an association phase based on the received probe response message, and in the association phase, the terminal can send an association request message to the AP for sending the probe response message, wherein the association request message comprises a second MAC address of the terminal, and the second MAC address is the real MAC address of the terminal. Therefore, after receiving the association request message sent by the terminal, the AP may query the local repository and the AC according to the second MAC address included therein to obtain the band support information of the terminal, because if the band support information of the terminal is stored in the AP or the AC, the terminal MAC address included in the band support information of the terminal is the second MAC address. The process of the AP querying the local repository and the AC according to the second MAC address to obtain the band support information of the terminal is similar to the process of the AP querying the local repository and the AC according to the first MAC address to obtain the band support information of the terminal illustrated in fig. 6, and will not be repeated.

However, it should be noted that, the process of querying the local repository and the AC according to the first MAC address to obtain the frequency band supporting information of the terminal occurs in the probing phase, so that the AP may perform differential processing on the probe request message sent by the terminal based on the decision result of the optimal frequency band of the optimal AP of the AC in the probing phase. For example, if a certain AP is the best AP, the AP sends a probe response message to the terminal in the best frequency band, and if the AP is not the best AP, the probe request message is discarded, so that the terminal cannot find its own existence.

However, if the terminal is the second type of terminal, the AP will normally perform a probe response to the terminal in the probing phase, that is, will send a probe response message to the terminal in the frequency band in which the probe request message is received. And the association request message sent by the terminal is differentially processed based on the decision result of the optimal frequency band of the optimal AP of the AC in the association stage. For example, if a certain AP is the best AP, the AP sends an association confirmation message to the terminal through the best frequency band to establish a connection with the terminal, and if the AP is not the best AP, the association request message is discarded. This is because for the second type of terminal, the true identity of the terminal cannot be confirmed in the probing phase, and the terminal eventually networking and data transmission processes all require confirmation based on the true identity of the terminal.

Fig. 7 is a flowchart of another spectrum navigation method according to an embodiment of the present invention, as shown in fig. 7, after the connection between the AP and the terminal is established, the method may further include the following steps:

701. the AP transmits network quality change information of the terminal to the AC.

702. The AP receives a notification sent by the AC after determining that the network quality change information meets the set condition, the notification indicating disconnection from the terminal.

The AP in this embodiment refers to an AP that has established a connection with a terminal.

Wherein the setting condition reflects that the network quality of the terminal becomes poor.

703. The AP disconnects from the terminal and marks the terminal as a terminal that is not allowed to be accessed.

Specifically, the AP may add the real MAC address of the terminal to the blacklist corresponding to the AP, where the real MAC address may be a MAC address extracted from the association request packet sent by the terminal. Because the terminal sends the association request message containing the real MAC address to the AP in the process of establishing connection with the AP, the AP can extract the real MAC address of the terminal from the association request message.

704. And the AP receives the detection request message or the association request message sent by the terminal again within the set time, and discards the detection request message or the association request message if the terminal is determined to be the terminal which is not allowed to be accessed according to the MAC address of the terminal contained in the detection request message or the association request message.

705. And if the times of receiving the detection request message or the association request message sent by the terminal within the set time reaches the set value, the AP responds to the detection request message or the association request message.

When the terminal disconnects from the AP, networking is again attempted. In the process of trying networking again, the terminal can resend the detection request message, so that if the AP receives the detection request message sent by the terminal again within the preset time after the connection with the terminal is disconnected, whether the MAC address of the terminal contained in the detection request message is located in a blacklist or not is determined, if yes, the detection request message is discarded, and if not, the detection response message can be sent to the terminal. Further, if the association request message sent by the terminal is received, determining whether the MAC address of the terminal included in the association request message is located in the blacklist, if so, discarding the association request message, otherwise, determining that the association request message is not to be responded according to the decision result of the AC at the moment. Wherein, it is again judged in the association phase that the terminal is not in the blacklist because the terminal of the second type can recognize the true identity, namely the true MAC address, only in the association phase.

Of course, at this time, the AP may also identify the type of the terminal based on the terminal MAC address carried in the received probe request packet, so if the terminal is the first type of terminal and the terminal is located in the blacklist, the probe response packet is discarded, and at this time, the terminal will not find that the AP exists, and will not send the association request packet to the AP.

It should be noted that, although in principle, when the AP receives the probe request message or the association request message of the terminal that has just been disconnected again, the probe request message or the association request message is discarded. However, in order to avoid the problem that the terminal cannot network finally, if the number of times that the terminal sends the probe request message or the association request message to the AP within the set time period has reached the set value, the AP responds to the probe request message or the association request message in order to ensure that the AP can network. Because if the terminal sends out a probe request message multiple times or sends out an association request message multiple times to the AP at this time, it is likely that the terminal cannot connect to other APs.

Fig. 8 is a flowchart of another spectrum navigation method according to an embodiment of the present invention, where the method may be performed by any one of the plurality of APs, as shown in fig. 8, and the method may include the following steps:

801. The AP responds to the detection request message sent by the terminal, and determines the frequency band supporting information of the terminal and the signal intensity respectively corresponding to the detection request message on the frequency band supported by the AP.

802. And the AP sends the signal intensities respectively corresponding to the frequency bands supported by the AP to the terminal, so that the terminal determines the optimal frequency band of the optimal access point from the multiple access points to connect according to the signal intensities respectively corresponding to the frequency bands supported by the multiple access points.

In this embodiment, after determining the signal intensities respectively corresponding to the frequency bands supported by the probe request packet, the AP may directly feed back the signal intensity information to the terminal. Because more than one AP receives the probe request message sent by the terminal, when the multiple APs all receive the probe request message, the terminal receives signal intensities respectively corresponding to the probe request messages respectively sent by the multiple APs on frequency bands supported by the multiple APs, so that the terminal can combine the received signal intensities on the frequency bands of the APs, and select a frequency band of the AP with the highest intensity from the frequency bands as the optimal frequency band of the optimal access point for connection.

The process of selecting the best frequency band of the best access point by the terminal may refer to the processing procedure of the AC in the foregoing embodiment, which is not described herein.

A spectrum navigation device of one or more embodiments of the present invention will be described in detail below. Those skilled in the art will appreciate that these spectral navigation apparatus may be configured using commercially available hardware components through the steps taught by the present solution.

Fig. 9 is a schematic structural diagram of a spectrum navigation device according to an embodiment of the present invention, as shown in fig. 9, where the device includes: a receiving module 11, a determining module 12, and a transmitting module 13.

And the receiving module 11 is configured to receive the frequency band supporting information of the terminal reported by the multiple access points and signal intensities respectively corresponding to the detection request messages sent by the terminal on the frequency bands supported by the multiple access points.

And the determining module 12 is configured to determine an optimal frequency band of an optimal access point from the multiple access points according to the frequency band support information of the terminal and signal strengths corresponding to the probe request messages on the frequency bands supported by the multiple access points respectively.

And the sending module 13 is configured to send indication information to the multiple access points, where the indication information is used to instruct the best access point to establish a connection with the terminal in the best frequency band.

Alternatively, the determining module 12 may specifically be configured to: if the terminal supports a first frequency band and a second frequency band, determining an optimal access point from the plurality of access points according to the signal strength of the detection request message corresponding to the second frequency band supported by the plurality of access points, wherein the optimal frequency band is the second frequency band; if the terminal only supports the first frequency band, determining an optimal access point from the plurality of access points according to the signal strength of the detection request message corresponding to the first frequency band supported by the plurality of access points, wherein the optimal frequency band is the first frequency band.

Wherein, optionally, the first frequency band is a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band.

Alternatively, the determining module 12 may be further configured to: and determining the optimal frequency band of the optimal access point from the plurality of access points according to the frequency spectrum support information of the terminal, the signal strength respectively corresponding to the detection request message on the frequency bands respectively supported by the plurality of access points and the service quality information respectively corresponding to the frequency bands respectively supported by the plurality of access points.

Alternatively, the determining module 12 may be further configured to: deleting the target frequency band of the target access point with the service quality not meeting the requirement according to the service quality information respectively corresponding to the frequency bands supported by the access points; and/or deleting the access point associated with the setting label, wherein the setting label indicates that the access point does not provide network access service for the terminal.

Wherein the quality of service information includes at least one of: and the plurality of access points respectively support the corresponding load information on the frequency bands, and the plurality of access points respectively support the corresponding network quality information of the accessed terminal on the frequency bands.

Optionally, the apparatus may further include: the connection monitoring module is used for acquiring network quality change information after the terminal is accessed to the optimal frequency band of the optimal access point; if the network quality change information meets the set condition, notifying the optimal access point to disconnect the connection with the terminal; and marking the optimal frequency band which is not allowed to be accessed to the optimal access point by the terminal.

The apparatus shown in fig. 9 may perform the steps performed by the access controller in the foregoing embodiments, and for the portions of this embodiment not described in detail, reference may be made to the description related to the foregoing embodiments, which are not described herein.

In one possible design, the structure of the spectrum navigation apparatus shown in fig. 9 may be implemented as an electronic device, such as an access controller. As shown in fig. 10, the electronic device may include: a first processor 21, and a first memory 22. Wherein the first memory 22 has executable code stored thereon, which when executed by the first processor 21, causes the first processor 21 to perform at least the steps performed by the access controller in the previous embodiments.

In practice, the electronic device may also include a first communication interface 23 for communicating with other devices.

Additionally, embodiments of the present invention provide a non-transitory machine-readable storage medium having executable code stored thereon that, when executed by a processor of an electronic device, causes the processor to at least perform the steps performed by an access controller as in the previous embodiments.

Fig. 11 is a schematic structural diagram of another spectrum navigation device according to an embodiment of the present invention, as shown in fig. 11, the device includes: a determining module 31, a transmitting module 32, a receiving module 33 and a processing module 34.

The determining module 31 is configured to determine, by using an access point, frequency band support information of a terminal and signal strengths respectively corresponding to the frequency bands supported by the access point in response to a probe request packet sent by the terminal.

And the sending module 32 is configured to report the frequency band supporting information of the terminal and signal strengths corresponding to the frequency bands supported by the access point in the probe request message to an access controller.

And a receiving module 33, configured to receive indication information sent by the access controller, where the indication information is used to indicate that a connection is established between the access controller and the terminal in an optimal frequency band of the optimal access point, and the access controller determines, from a plurality of access points that receive the probe request message, the optimal frequency band of the optimal access point according to the frequency band support information of the terminal and signal strengths corresponding to the probe request message on the frequency bands supported by the access point, respectively.

And a processing module 34, configured to process the probe request packet according to the indication information.

Optionally, the processing module 34 may specifically be configured to: if the access point is the optimal access point, sending a detection response message to the terminal through the optimal frequency band; receiving an association request message sent by the terminal; and sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal.

Optionally, the processing module 34 may specifically be configured to: and if the access point is not the optimal access point, discarding the detection request message.

Optionally, if the frequency band supporting information of the terminal is that the terminal supports a first frequency band and a second frequency band, the optimal frequency band is the second frequency band; if the frequency band supporting information of the terminal is that the terminal only supports the first frequency band, the optimal frequency band is the first frequency band.

Optionally, the sending module 32 may be further configured to: sending service quality information corresponding to each frequency band supported by the access point to the access controller so that the access controller can determine the optimal frequency band of the optimal access point from the plurality of access points; wherein the quality of service information includes at least one of: and the load information corresponding to each frequency band supported by the plurality of access points is the network quality information of the accessed terminal corresponding to each frequency band supported by the plurality of access points.

Optionally, the apparatus further comprises: and the control module is used for setting the target frequency band as a service set identification hiding mode if the corresponding service quality information on the target frequency band supported by the access point meets the set condition.

Optionally, the determining module 31 may specifically be configured to: extracting a first MAC address of the terminal from the detection request message; and inquiring a local cache library and the access controller according to the first MAC address of the terminal to obtain the frequency band supporting information of the terminal.

Optionally, if the local cache library and the access controller do not have the frequency band supporting information of the terminal, the determining module 31 may specifically be configured to: if a first detection request message sent by the terminal in a first frequency band is received, discarding the first detection request message, and updating the discarding times of the first detection request message; if the discarding times reach a set value within a set time, or if the set time is reached and the second detection request message sent by the terminal in the second frequency band is not received, determining that the terminal only supports the first frequency band.

Optionally, if the local cache library and the access controller do not have the frequency band supporting information of the terminal, the determining module 31 may specifically be configured to: if a second detection request message sent by the terminal in the second frequency band is received, determining that the terminal supports the first frequency band and the second frequency band.

The first frequency band is a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band.

Wherein, optionally, the determining module 31 may specifically be configured to: determining the type of the terminal according to the first MAC address; and if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address.

Optionally, the determining module 31 may be further configured to: if the type of the terminal is the second type, sending a detection response message to the terminal through the sending module 32, and receiving an association request message sent by the terminal through the receiving module 33, wherein the association request message contains a second MAC address of the terminal; and inquiring a local cache library and the access controller according to the second MAC address to obtain the frequency band supporting information of the terminal, wherein the frequency band supporting information of the terminal comprises the second MAC address. Based on this, the processing module 33 is specifically configured to: if the access point is the optimal access point, sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal; and if the access point is not the optimal access point, discarding the association request message.

Optionally, the sending module 32 is further configured to: and sending the network quality change information of the terminal to the access controller. The receiving module 33 is further configured to: and receiving a notification sent by the access controller after the network quality change information is determined to be in accordance with a set condition, wherein the notification indicates disconnection of the terminal. The processing module 34 is further configured to: and based on the notification, disconnecting the connection with the terminal, and marking the terminal as a terminal which is not allowed to be accessed.

In particular, in marking the terminal as a terminal not allowed to be accessed, the processing module 34 may be specifically configured to: and adding the real MAC address of the terminal into a blacklist corresponding to the access point, wherein the real MAC address is the MAC address extracted from the association request message sent by the terminal.

Thus, the processing module 34 is also configured to: receiving a detection request message or an association request message sent by the terminal again through the receiving module 33 within a set time; discarding the detection request message or the association request message if the MAC address of the terminal contained in the detection request message or the association request message is matched with the real MAC address; and if the times of receiving the detection request message or the association request message sent by the terminal within the set time reaches a set value, responding to the detection request message or the association request message.

The apparatus shown in fig. 11 may perform the steps performed by the access point in the embodiments shown in fig. 1 to 7, and for the parts not described in detail in this embodiment, reference may be made to the related description of the foregoing embodiments, which are not repeated here.

In one possible design, the structure of the spectrum navigation apparatus shown in fig. 11 may be implemented as an electronic device, such as an AP. As shown in fig. 12, the electronic device may include: a second processor 41 and a second memory 42. Wherein the second memory 42 stores executable code, which when executed by the second processor 41, causes the second processor 41 to perform at least the steps performed by the access point in the embodiments shown in fig. 1 to 7.

In practice, the electronic device may also include a second communication interface 43 for communicating with other devices.

Additionally, embodiments of the present invention provide a non-transitory machine-readable storage medium having executable code stored thereon that, when executed by a processor of an electronic device, causes the processor to perform at least the steps performed by an access point in the embodiments of fig. 1-7 described above.

Fig. 13 is a schematic structural diagram of another spectrum navigation device according to an embodiment of the present invention, as shown in fig. 13, the device includes: a determining module 51 and a transmitting module 52.

The determining module 51 is configured to determine, in response to a probe request packet sent by a terminal, frequency band support information of the terminal and signal strengths corresponding to the probe request packet on frequency bands supported by the access point, respectively.

And the sending module 52 is configured to send signal intensities corresponding to the probe request messages on the frequency bands supported by the access points to the terminal, so that the terminal determines an optimal frequency band of an optimal access point from the plurality of access points according to the signal intensities corresponding to the probe request messages on the frequency bands supported by the plurality of access points, and connects the optimal frequency bands.

The apparatus shown in fig. 13 may perform the steps performed by the access point in the foregoing embodiment shown in fig. 8, and for the portions not described in detail in this embodiment, reference may be made to the description related to the foregoing embodiment, which is not repeated here.

In one possible design, the structure of the spectrum navigation apparatus shown in fig. 13 may be implemented as an electronic device, such as an AP. As shown in fig. 14, the electronic device may include: a third processor 61, and a third memory 62. Wherein the third memory 62 stores executable code that, when executed by the third processor 61, causes the third processor 61 to perform at least the steps performed by the access point in the embodiment shown in fig. 8.

In practice, a third communication interface 63 may also be included in the electronic device for communicating with other devices.

Additionally, embodiments of the present invention provide a non-transitory machine-readable storage medium having executable code stored thereon that, when executed by a processor of an electronic device, causes the processor to perform at least the steps performed by an access point in the embodiment of fig. 8 described above.

The apparatus embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by adding necessary general purpose hardware platforms, or may be implemented by a combination of hardware and software. Based on such understanding, the foregoing aspects, in essence and portions contributing to the art, may be embodied in the form of a computer program product, which may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The communication method provided by the embodiment of the present invention may be implemented by one or more programs/software, where the programs/software may be provided by the network side, and the access controller and the access point mentioned in the foregoing embodiments may download the required programs/software to a local nonvolatile storage medium, and when the access controller and the access point need to implement the foregoing spectrum navigation method, the CPU reads the programs/software into the memory, and then the CPU executes the programs/software to implement the spectrum navigation method provided in the foregoing embodiment, where the implementation process may refer to the schematic diagrams in fig. 1 to 8.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of spectrum navigation, applied to an access controller, the method comprising:

transmitting indication information to the plurality of access points, wherein the indication information is used for indicating the optimal access point to establish connection with the terminal in the optimal frequency band;

the frequency band supporting information of the terminal reported by the access point is determined by the following modes: extracting a first MAC address of the terminal from the detection request message, and determining the type of the terminal according to the first MAC address; if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address; if the type of the terminal is the second type, sending a detection response message to the terminal, receiving an association request message which is sent by the terminal and contains a second MAC address of the terminal, inquiring a local cache library and the access controller according to the second MAC address to obtain frequency band supporting information of the terminal, wherein the frequency band supporting information of the terminal comprises the second MAC address.

2. The method of claim 1, wherein the step of determining the optimal frequency band for the optimal access point comprises:

if the terminal supports a first frequency band and a second frequency band, determining an optimal access point from the plurality of access points according to the signal strength of the detection request message corresponding to the second frequency band supported by the plurality of access points, wherein the optimal frequency band is the second frequency band;

if the terminal only supports the first frequency band, determining an optimal access point from the plurality of access points according to the signal strength of the detection request message corresponding to the first frequency band supported by the plurality of access points, wherein the optimal frequency band is the first frequency band.

3. The method of claim 2, wherein the first frequency band is a 2.4GHz frequency band and the second frequency band is a 5GHz frequency band.

4. A method according to any one of claims 1 to 3, wherein the step of determining the optimal frequency band for the optimal access point comprises:

and determining the optimal frequency band of the optimal access point from the plurality of access points according to the frequency spectrum support information of the terminal, the signal strength respectively corresponding to the detection request message on the frequency bands respectively supported by the plurality of access points and the service quality information respectively corresponding to the frequency bands respectively supported by the plurality of access points.

5. The method of claim 4, wherein prior to determining the best frequency band for the best access point from the plurality of access points, further comprising:

deleting the target frequency band of the target access point with the service quality not meeting the requirement according to the service quality information respectively corresponding to the frequency bands supported by the access points; and/or the number of the groups of groups,

and deleting the access point associated with the setting label, wherein the setting label indicates that the access point does not provide network access service for the terminal.

6. The method of claim 4, wherein the quality of service information comprises at least one of:

and the plurality of access points respectively support the corresponding load information on the frequency bands, and the plurality of access points respectively support the corresponding network quality information of the accessed terminal on the frequency bands.

7. The method according to claim 1, wherein the method further comprises:

acquiring network quality change information of the terminal after the terminal is accessed to the optimal frequency band of the optimal access point;

if the network quality change information meets the set condition, notifying the optimal access point to disconnect the connection with the terminal;

and marking the optimal frequency band which is not allowed to be accessed to the optimal access point by the terminal.

8. A method of spectrum navigation, for application to an access point, the method comprising:

processing the detection request message according to the indication information;

the determining the frequency band supporting information of the terminal comprises the following steps: extracting a first MAC address of the terminal from the detection request message, and determining the type of the terminal according to the first MAC address; if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address; if the type of the terminal is the second type, sending a detection response message to the terminal, receiving an association request message which is sent by the terminal and contains a second MAC address of the terminal, inquiring a local cache library and the access controller according to the second MAC address to obtain frequency band supporting information of the terminal, wherein the frequency band supporting information of the terminal comprises the second MAC address.

9. The method of claim 8, wherein the processing the probe request message according to the indication information comprises:

if the access point is the optimal access point, sending a detection response message to the terminal through the optimal frequency band;

receiving an association request message sent by the terminal;

and sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal.

10. The method of claim 8, wherein the processing the probe request message according to the indication information comprises:

and if the access point is not the optimal access point, discarding the detection request message.

11. The method according to claim 8, wherein if the frequency band support information of the terminal is that the terminal supports a first frequency band and a second frequency band, the optimal frequency band is the second frequency band;

if the frequency band supporting information of the terminal is that the terminal only supports the first frequency band, the optimal frequency band is the first frequency band.

12. The method of claim 8, wherein the method further comprises:

sending service quality information corresponding to each frequency band supported by the access point to the access controller so that the access controller can determine the optimal frequency band of the optimal access point from the plurality of access points;

The quality of service information includes at least one of:

and the load information corresponding to each frequency band supported by the plurality of access points is the network quality information of the accessed terminal corresponding to each frequency band supported by the plurality of access points.

13. The method according to claim 12, wherein the method further comprises:

and if the corresponding service quality information on the target frequency band supported by the access point accords with the set condition, setting the target frequency band as a service set identification hiding mode.

14. The method according to claim 8, wherein if the frequency band support information of the terminal does not exist in the local cache library and the access controller, the determining the frequency band support information of the terminal in response to the probe request message sent by the terminal includes:

if a first detection request message sent by the terminal in a first frequency band is received, discarding the first detection request message, and updating the discarding times of the first detection request message;

if the discarding times reach a set value within a set time, or if the set time is reached and the second detection request message sent by the terminal in the second frequency band is not received, determining that the terminal only supports the first frequency band.

15. The method of claim 8, wherein if the frequency band support information of the terminal does not exist in the local cache library and the access controller, the determining the frequency band support information of the terminal includes:

if a second detection request message sent by the terminal in the second frequency band is received, determining that the terminal supports the first frequency band and the second frequency band.

16. The method of claim 14 or 15, wherein the first frequency band is a 2.4GHz frequency band and the second frequency band is a 5GHz frequency band.

17. The method of claim 8, wherein said processing said probe request message according to said indication information comprises:

if the access point is the optimal access point, sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal;

and if the access point is not the optimal access point, discarding the association request message.

18. The method according to claim 9 or 17, characterized in that after said establishing a connection with said terminal, further comprises:

transmitting network quality change information of the terminal to the access controller;

Receiving a notification sent by the access controller after the network quality change information is determined to be in accordance with a set condition, wherein the notification indicates disconnection of the terminal;

and disconnecting the connection with the terminal, and marking the terminal as a terminal which is not allowed to be accessed.

19. The method of claim 18, wherein said marking the terminal as a non-access-permitted terminal comprises:

and adding the real MAC address of the terminal into a blacklist corresponding to the access point, wherein the real MAC address is the MAC address extracted from the association request message sent by the terminal.

20. The method of claim 19, wherein the method further comprises:

receiving the detection request message or the association request message sent by the terminal again within a set time;

and discarding the detection request message or the association request message if the MAC address of the terminal contained in the detection request message or the association request message is matched with the real MAC address.

21. The method of claim 20, wherein the method further comprises:

and if the times of receiving the detection request message or the association request message sent by the terminal within the set time reaches a set value, responding to the detection request message or the association request message.

22. A spectral navigation apparatus, comprising:

the receiving module is used for receiving the frequency band supporting information of the terminal reported by the access points and the signal intensities respectively corresponding to the detection request messages sent by the terminal on the frequency bands respectively supported by the access points, wherein the frequency band supporting information of the terminal reported by the access points is determined by the following modes: extracting a first MAC address of the terminal from the detection request message, and determining the type of the terminal according to the first MAC address; if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address; if the type of the terminal is the second type, sending a detection response message to the terminal, receiving an association request message which is sent by the terminal and contains a second MAC address of the terminal, and inquiring a local cache library and the access controller according to the second MAC address to obtain frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the second MAC address;

23. The apparatus of claim 22, wherein the determining module is specifically configured to:

24. The apparatus of claim 22, wherein the determining module is specifically configured to:

25. An electronic device, comprising: a memory, a processor; wherein the memory has stored thereon executable code which, when executed by the processor, causes the processor to perform the spectral navigation method of any of claims 1-7.

26. A spectral navigation apparatus, comprising:

the determining module is used for responding to a detection request message sent by a terminal, determining the frequency band supporting information of the terminal and the signal strength respectively corresponding to the detection request message on the frequency band supported by an access point, extracting a first MAC address of the terminal from the detection request message, and determining the type of the terminal according to the first MAC address; if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address; if the type of the terminal is the second type, sending a detection response message to the terminal, receiving an association request message which is sent by the terminal and contains a second MAC address of the terminal, and inquiring a local cache library and the access controller according to the second MAC address to obtain frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the second MAC address;

27. The apparatus of claim 26, wherein the processing module is specifically configured to:

if the access point is the optimal access point, sending a detection response message to the terminal through the optimal frequency band; receiving an association request message sent by the terminal; sending an association confirmation message to the terminal through the optimal frequency band so as to establish connection with the terminal;

28. The apparatus of claim 26, wherein the means for transmitting is further configured to:

the quality of service information includes at least one of:

29. The apparatus of claim 26, wherein the determining module is specifically configured to: if the frequency band supporting information of the terminal does not exist in the local cache library and the access controller, the frequency band supporting information of the terminal is determined according to the following mode:

if a first detection request message sent by the terminal in a first frequency band is received, discarding the first detection request message, and updating the discarding times of the first detection request message; if the discarding times reach a set value within a set time period, or if the set time period is reached and a second detection request message sent by the terminal in a second frequency band is not received, determining that the terminal only supports the first frequency band;

30. The apparatus of claim 26, wherein the processing module is further configured to:

31. An electronic device, comprising: a memory, a processor; wherein the memory has stored thereon executable code which, when executed by the processor, causes the processor to perform the spectral navigation method of any of claims 8 to 21.

32. A spectral navigation system, comprising:

the access points are used for responding to the detection request message sent by the terminal, determining the frequency band supporting information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each access point, sending the frequency band supporting information of the terminal and the signal intensity corresponding to the detection request message on the frequency band supported by each access point to the access controller, processing the detection request message according to the indication information sent by the access controller, extracting the first MAC address of the terminal from the detection request message, and determining the type of the terminal according to the first MAC address; if the type of the terminal is a first type, inquiring a local cache library and the access controller according to the first MAC address to obtain the frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the first MAC address; if the type of the terminal is the second type, sending a detection response message to the terminal, receiving an association request message which is sent by the terminal and contains a second MAC address of the terminal, and inquiring a local cache library and the access controller according to the second MAC address to obtain frequency band support information of the terminal, wherein the frequency band support information of the terminal comprises the second MAC address;

33. A method of spectrum navigation, for application to an access point, the method comprising:

the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the access points are sent to the terminal, so that the terminal determines the optimal frequency band of the optimal access point from the access points to connect according to the signal intensities respectively corresponding to the detection request messages on the frequency bands supported by the access points;

34. A spectral navigation apparatus, comprising:

35. An electronic device, comprising: a memory, a processor; wherein the memory has stored thereon executable code which, when executed by the processor, causes the processor to perform the spectral navigation method of claim 33.