CN112566216B - Wireless terminal access management method and system - Google Patents
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Abstract
The invention discloses a wireless terminal access management method and a wireless terminal access management system, relates to the technical field of wireless communication, and can realize intelligent management of a wireless access point on network access conditions of a wireless terminal and improve the service quality of a wireless network. The method comprises the following steps: the wireless access point judges whether the wireless terminal is allowed to access or not according to the message signal intensity of the wireless terminal access request; when the wireless terminal accesses the wireless access point, whether the access relation of the wireless terminal is released or not is dynamically judged according to the current channel utilization rate of the wireless access point, the packet sending signal intensity of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and the preset lowest signal intensity threshold value allowing access. The system is applied with the method provided by the scheme.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and a system for managing access to a wireless terminal.
Background
The WLAN is a wireless network technology that uses a radio frequency technology to form a local area network to implement over-the-air communication. As is known, propagation of electromagnetic waves in the air may cause attenuation of wireless signals due to interference of surrounding environments, in the prior art, access management of a wireless terminal is generally implemented based on signal strength, for example, by setting a signal strength threshold of a wireless access point, when the signal strength of the wireless terminal accessing the wireless access point is smaller than the signal strength threshold, a network access request of the wireless terminal is rejected by the wireless access point, such a scheme is simple in logic, in order to fully consider an application scenario of a weak signal wireless terminal or a low-rate wireless terminal, for example, when the terminal signal strength received by the wireless access point has large jitter, the wireless terminal may repeatedly go on and off the line at the wireless access point, and service quality of the entire wireless network is affected.
Disclosure of Invention
The invention aims to provide a wireless terminal access management method and a wireless terminal access management system, which can realize intelligent management of a wireless access point on the network access condition of a wireless terminal and improve the service quality of a wireless network.
In order to achieve the above object, a first aspect of the present invention provides a wireless terminal access management method, including:
the wireless access point judges whether the wireless terminal is allowed to access or not according to the message signal intensity of the wireless terminal access request;
when the wireless terminal accesses the wireless access point, dynamically judging whether to release the access relation of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal intensity of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and a preset lowest signal intensity threshold value allowing access.
Preferably, the method for the wireless access point to determine whether to allow the wireless terminal to access according to the message signal strength of the wireless terminal access request includes:
the wireless access point detects the message signal strength of a wireless terminal access request, and when the message signal strength is greater than the minimum signal strength threshold value, the wireless terminal is allowed to access the wireless access point.
Preferably, the method for the wireless access point to determine whether to allow the wireless terminal to access according to the message signal strength of the wireless terminal access request further includes:
the wireless access point detects the current channel utilization rate, and when the current channel utilization rate is less than M and meets the formula L < F-D, the wireless terminal is allowed to access the wireless access point;
wherein L represents the message signal strength value, F represents the lowest signal strength threshold value, D represents a signal strength spread value, and M represents a first threshold value of channel utilization.
Further, the method for dynamically determining whether to release the access relationship of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point, and a preset lowest signal strength threshold value allowing access includes:
performing integral calculation on the wireless terminal by adopting a counting algorithm, and when the current channel utilization rate is greater than N, the packet sending signal intensity of the wireless terminal is greater than F, and the negotiation rate of the wireless terminal and the wireless access point is greater than Q, subtracting one from the integral of the wireless terminal, wherein the initial value and the minimum value of the integral of the wireless terminal accessed to the wireless access point are both zero, N represents a second threshold value of the channel utilization rate, and N is greater than M;
when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral;
and when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal.
Preferably, the method further comprises the following steps:
when the wireless terminal's packet-transmitted signal strength is less than the difference of the minimum signal strength threshold minus the signal strength spread value, the difference adds the wireless terminal's integral to R every time E is increased, R = (F-D-L)/E + 1.
Preferably, the method further comprises the following steps:
and if the same wireless terminal is simultaneously positioned in the signal coverage range of a plurality of wireless access points, preferentially accessing the wireless access points corresponding to the small integral value.
Compared with the prior art, the wireless terminal access management method provided by the invention has the following beneficial effects:
in the wireless terminal access management method provided by the invention, a wireless network system consists of a wireless access point, a wireless terminal and an upper network, the wireless access point is networked with the upper network, the wireless terminal establishes a communication link with the wireless access point through a radio frequency signal and is used for data communication between the wireless terminal and the upper network, and meanwhile, the wireless access point is also used for monitoring the signal state of the wireless terminal and ensuring the internet access experience of a terminal user under the wireless access point. Specifically, when a wireless terminal requests to access a wireless access point, the wireless access point determines whether the wireless terminal is allowed to access according to the message signal strength, and after the wireless access point allows the wireless terminal to access, the wireless access point comprehensively considers and dynamically judges whether the access relation of the wireless terminal is reserved by acquiring the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and the preset lowest signal strength threshold value allowed to access in real time.
Compared with the prior art that whether the wireless access point is accessed or not is judged only based on the strength of the packet sending signal of the wireless terminal, the scheme of the invention can effectively avoid the situation of repeatedly getting on and off the wireless access point caused by the jitter of the signal strength of the wireless terminal, thereby improving the network service quality of the wireless access point.
A second aspect of the present invention provides a wireless terminal access management system, which is applied to the wireless terminal access management method in the foregoing technical solution, and the system includes:
the judging unit is used for judging whether the wireless terminal is allowed to be accessed or not by the wireless access point according to the message signal strength of the wireless terminal access request;
and the processing unit is used for dynamically judging whether to release the access relation of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and a preset lowest signal strength threshold value allowing access after the wireless terminal is accessed into the wireless access point.
Preferably, the determining unit is configured to detect, by a wireless access point, a message signal strength of a wireless terminal access request, and allow the wireless terminal to access the wireless access point when the message signal strength is greater than the minimum signal strength threshold; or,
the wireless access point is used for detecting the current channel utilization rate, and when the current channel utilization rate is less than M and meets the formula L < F-D, the wireless terminal is allowed to access the wireless access point; wherein L represents the message signal strength value, F represents the lowest signal strength threshold value, D represents a signal strength spread value, and M represents a first threshold value of channel utilization.
Preferably, the processing unit is configured to perform integral calculation on the wireless terminal by using a counting algorithm, and when a current channel utilization rate is greater than N, a packet signal strength of the wireless terminal is greater than the minimum signal strength threshold, and a negotiation rate of the wireless terminal and the wireless access point is greater than Q, subtract one from an integral of the wireless terminal, an initial value of an integral of the wireless terminal accessing the wireless access point is zero, N represents a second threshold of the channel utilization rate, and N is greater than M;
when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral;
and when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal.
Compared with the prior art, the beneficial effects of the wireless terminal access management system provided by the invention are the same as the beneficial effects of the wireless terminal access management method provided by the technical scheme, and the detailed description is omitted here.
A third aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described wireless terminal access management method.
Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the invention are the same as the beneficial effects of the wireless terminal access management method provided by the technical scheme, and are not repeated herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart illustrating a method for access management of a wireless terminal according to an embodiment of the present invention;
fig. 2 is an exemplary diagram illustrating an embodiment of a wireless access point determining whether to allow a wireless terminal to access according to a signal strength of a message of a wireless terminal access request;
fig. 3 is an exemplary diagram for dynamically determining whether to release the access relationship of the wireless terminal according to the channel utilization, the strength of the packet-sending signal, the negotiation rate, and the minimum signal strength threshold in the embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present embodiment provides a method for managing access of a wireless terminal, including:
the wireless access point judges whether the wireless terminal is allowed to access or not according to the message signal intensity of the wireless terminal access request; when the wireless terminal accesses the wireless access point, whether the access relation of the wireless terminal is released or not is dynamically judged according to the current channel utilization rate of the wireless access point, the packet sending signal intensity of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and the preset lowest signal intensity threshold value allowing access.
In the method for managing access of a wireless terminal provided by this embodiment, a wireless network system is composed of a wireless access point, a wireless terminal and an upper network, the wireless access point is networked with the upper network, the wireless terminal establishes a communication link with the wireless access point through a radio frequency signal, and is used for data communication between the wireless terminal and the upper network, and the wireless access point is also used for monitoring the signal state of the wireless terminal, thereby ensuring the internet experience of a terminal user under the wireless access point. Specifically, when a wireless terminal requests to access a wireless access point, the wireless access point determines whether the wireless terminal is allowed to access according to the message signal strength, and after the wireless access point allows the wireless terminal to access, the wireless access point comprehensively considers and dynamically judges whether the access relation of the wireless terminal is reserved by acquiring the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and the preset lowest signal strength threshold value allowed to access in real time.
Compared with the prior art that whether the access to the wireless hotspot is judged only based on the signal strength of the wireless terminal packet, the scheme of the embodiment can effectively avoid the situation of repeatedly getting on and off the wireless access point due to the signal strength jitter of the wireless terminal, and further improve the network service quality of the wireless access point.
Referring to fig. 2, it should be noted that there are two schemes for determining whether to allow the wireless terminal to access the wireless access point:
according to the first scheme, the wireless access point detects the message signal strength of the wireless terminal access request, and when the message signal strength is larger than the minimum signal strength threshold value, the wireless terminal is allowed to access the wireless access point.
The wireless access point detects the current channel utilization rate, and when the current channel utilization rate is less than M and the formula L is less than F-D, the wireless terminal is allowed to access the wireless access point; wherein, L represents message signal strength value, F represents lowest signal strength threshold value, D represents signal strength expansion value, and M represents first threshold value of channel utilization rate.
In a specific implementation, in the first scheme, whether the wireless terminal is allowed to access the wireless access point is determined based on the message signal strength of the wireless terminal, that is, the access is allowed when the message signal strength is greater than the minimum signal strength threshold, for example, the minimum signal strength threshold is set to-70 dBi, and of course, a developer may also appropriately adjust the size of the minimum signal strength threshold according to the application environment of the wireless access point, which is not described in detail in this embodiment. Scheme two-phase comparison scheme one, in order to fully consider the applicable scenarios of weak signal wireless terminals or low rate wireless terminals, when the message signal strength is slightly lower than the minimum signal strength threshold, the wireless network service can be provided for the part of the wireless terminals under the condition that the wireless access point channel utilization rate is low, when the current channel utilization rate is less than the first threshold of the channel utilization rate and the message signal strength value is less than the difference value obtained by subtracting the signal strength extension value from the lowest signal strength threshold, wireless terminals meeting such conditions may be allowed to access the wireless access point, e.g., with a value of 20% for M, -70dBi for F, -6dBi for D, through the arrangement of the access strategy, under the condition of not influencing the performance of the wireless access point and the normal internet surfing experience of other wireless terminals, part of the resources are reserved to meet the network access requirements of the weak signal wireless terminals or the low-rate wireless terminals. Compared with the first scheme, the judgment strategy of the second scheme is more flexible, and waste of surplus channel bandwidth resources is avoided.
Referring to fig. 3, in the above embodiment, the method for dynamically determining whether to release the access relationship of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet transmission signal strength of the wireless terminal, the negotiation rate between the wireless terminal and the wireless access point, and the preset minimum signal strength threshold for allowing access includes:
performing integral calculation on the wireless terminal by adopting a counting algorithm, and when the current channel utilization rate is greater than N, the packet sending signal intensity of the wireless terminal is greater than F, and the negotiation rate of the wireless terminal and the wireless access point is greater than Q, subtracting one from the integral of the wireless terminal, wherein the initial value and the minimum value of the integral of the wireless terminal accessed to the wireless access point are both zero, N represents a second threshold value of the channel utilization rate, and N is greater than M; when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral; and when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal.
In specific implementation, after the wireless terminal accesses the wireless access point, the wireless access point implements integral counting on each accessed wireless terminal by identifying the MAC of each wireless terminal, an initial integral value corresponding to each MAC is zero, the wireless access point detects the current channel utilization rate in real time, when the channel utilization rate is greater than 40% (that is, N takes a value of 40%), the wireless terminal starts to detect the packet sending signal strength, when the packet sending signal strength of the wireless terminal is greater than the minimum signal strength threshold value and the negotiation rate of the wireless terminal and the wireless access point is greater than Q (that is, Q takes a value of 5 Mbps), the integral value of the corresponding MAC is decremented by one, usually N is greater than M, and preferably M takes a value of 20%; and when the packet-sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength extension value, for example, the signal strength extension value is 6dBi, adding one to the integral value of the corresponding MAC, or when the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the integral value of the corresponding MAC. And finally, counting an integral value corresponding to each MAC, and if the integral value corresponding to any MAC is larger than H, if the value of H is 30, automatically removing the corresponding wireless terminal from the wireless access point, and removing the access relation between the wireless access point and the wireless terminal.
It can be seen that whether the access relationship to the wireless terminal is released or not is dynamically determined by the integration algorithm provided in the above embodiment, whether the access relationship to the wireless terminal is released or not is determined by comprehensively considering a plurality of dimensions such as a channel utilization rate, a packet sending signal strength, a negotiation rate, a minimum signal strength threshold value, and the like, and network environments of the wireless terminal and the wireless access point are considered in many aspects.
The above embodiment further includes: when the packet signal strength of the wireless terminal is less than the difference value obtained by subtracting the signal strength spreading value from the minimum signal strength threshold value, the difference value adds R to the integral of the wireless terminal every time E is increased, where R = (F-D-L)/E +1, and the size of E may be half of the value of D, for example.
In specific implementation, for wireless terminals that are gradually far away from each other, when a wireless hotspot senses that the strength of a packet signal of the corresponding wireless terminal is gradually weaker and smaller than a minimum signal strength threshold minus a difference of a signal strength extension value, where the minimum signal strength threshold is set to-75 dBm, the difference of the signal strength extension value is 6dBm, and then, for every 3dBi increase, R is added to an integral value of the corresponding MAC, for example: the signal strength of the current terminal is-84 dBm, when R = [ (-75-6+84)/3] + 1. The setting can accelerate the integral counting of the wireless terminals which are gradually far away, accelerate the elimination of the network access of the weak signal wireless terminals or the low-speed wireless terminals on the wireless access points, and ensure the internet experience of the normal wireless terminals as much as possible.
In the above embodiment, the method further includes: and if the same wireless terminal is simultaneously positioned in the signal coverage range of the plurality of wireless access points, preferentially accessing the wireless access point corresponding to the small integral value.
In specific implementation, considering that a plurality of wireless access points may be deployed in the same area, two adjacent wireless hotspots may have overlapping wireless coverage areas, and for such an application scenario, in order to implement free access switching of the same wireless terminal between the two wireless hotspots, for example, a wireless access point a and a wireless access point B exist in the same area, and the wireless terminal is currently in the network coverage of the wireless access point a and has access to the wireless access point a, when the user holds the wireless terminal to gradually approach the wireless access point B, the wireless terminal will enter the overlapping coverage areas of the wireless access point a and the wireless access point B, at this time, the integral of the wireless terminal on the wireless access point a needs to be counted in real time, and after the wireless terminal meets the access condition of the wireless access point B, the wireless access point B can establish a virtual access relationship with the wireless terminal, the virtual access relation refers to a virtual access mode without an actual access relation, for example, a mode that a wireless terminal is accessed in a wireless access point B is simulated through a software program, so that the integral of the wireless terminal on the wireless access point B is simulated and calculated, and when the integral of the wireless terminal on the wireless access point a is larger than the integral on the wireless access point B, the wireless terminal is automatically switched to access the wireless access point B, so that the wireless terminal can be ensured to be always in an optimal network service, and the internet experience of a user is improved.
In summary, the present embodiment has the following beneficial effects:
1. when the channel utilization rate is less than N, which indicates that the current channel resource is more abundant, and the weak signal wireless terminal or the low-rate wireless terminal has less influence on other wireless terminals when transmitting data, therefore, when the channel utilization rate detected by the wireless access point is less than M, and the message signal strength of the wireless terminal is less than the difference between the minimum signal strength threshold and the signal strength extension value, the weak signal wireless terminal or the low-rate wireless terminal can be allowed to access the wireless access point, that is, part of resources can be allocated to the weak signal wireless terminal or the low-rate wireless terminal for access use under the condition of sufficient network resources, thereby avoiding the waste of channel bandwidth resources. It will be appreciated that the purpose of setting M to be less than N is to reserve certain channel bandwidth resources for weak signal wireless terminals or low rate wireless terminals.
2. Compared with the prior art that whether the wireless hotspot is accessed is judged only based on the strength of the packet sending signal of the wireless terminal, the counting algorithm is creatively introduced in the embodiment, when the wireless terminal accesses the wireless access point, the wireless access point starts integral counting aiming at the MAC, the initial value of the integral is zero, when the channel utilization rate detected by the wireless access point is more than or equal to N, the signal intensity of the data packet sent by the wireless terminal is judged, when the signal strength of the data packet is greater than the lowest signal strength threshold value and the negotiation rate is greater than or equal to Q, the wireless access point decrements the integral count of the MAC by one until the integral count is minimized to zero, when the signal strength of the packet transmitted by the wireless terminal is less than the lowest signal strength threshold and greater than the difference of the lowest signal strength threshold minus the signal strength extension value, or when the negotiation rate of the wireless terminal and the wireless access point is less than Q, the integral count of the wireless terminal is increased by one; when the count of the counter corresponding to the MAC is larger than or equal to H, the wireless access point sends an association release frame to the wireless terminal, and the wireless terminal is kicked out from the wireless access point, so that the wireless terminal can be released from access by the wireless access point when and only when the packet sending signal strength of the wireless terminal is lower than the minimum signal strength threshold value for a long time, and the situation that the packet signal strength sent by the wireless terminal is repeatedly up and down in the wireless access point due to short-term jitter is avoided.
3. In the above integration counting algorithm, when the packet sending signal strength of the wireless terminal is smaller than the difference between the minimum signal strength threshold and the signal strength extension value, the integration of the wireless terminal is added with R every time the difference is increased, so that the release time of gradually keeping away from the wireless terminal is accelerated, and therefore the internet experience of other wireless terminals under the current wireless access point can be greatly ensured.
Example two
The present embodiment provides a wireless terminal access management system, including:
the judging unit is used for judging whether the wireless terminal is allowed to be accessed or not by the wireless access point according to the message signal strength of the wireless terminal access request;
a processing unit, configured to, when the wireless terminal accesses the wireless access point, dynamically change the channel utilization rate of the wireless access point, the strength of the packet transmission signal of the wireless terminal, the negotiation rate between the wireless terminal and the wireless access point, and a preset minimum signal strength threshold allowing access according to the current channel utilization rate of the wireless access point, the negotiation rate between the wireless terminal and the wireless access point, and the preset minimum signal strength threshold allowing access
And judging whether the access relation of the wireless terminal is released or not.
Preferably, the determining unit is configured to detect, by a wireless access point, a message signal strength of a wireless terminal access request, and allow the wireless terminal to access the wireless access point when the message signal strength is greater than the minimum signal strength threshold; or,
the wireless access point is used for detecting the current channel utilization rate, and when the current channel utilization rate is less than M and meets the formula L < F-D, the wireless terminal is allowed to access the wireless access point; wherein L represents the message signal strength value, F represents the lowest signal strength threshold value, D represents a signal strength spread value, and M represents a first threshold value of channel utilization.
Preferably, the processing unit is configured to perform integral calculation on the wireless terminal by using a counting algorithm, when a current channel utilization rate is greater than N, a packet sending signal strength of the wireless terminal is greater than F, and a negotiation rate of the wireless terminal and the wireless access point is greater than Q, the integral of the wireless terminal is reduced by one, an initial integral value and a minimum integral value of the wireless terminal accessing the wireless access point are both zero, N represents a second threshold of the channel utilization rate, and N is greater than M;
when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral;
and when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal.
Compared with the prior art, the beneficial effects of the wireless terminal access management system provided by the embodiment of the invention are the same as those of the wireless terminal access management method provided by the first embodiment, and are not repeated herein.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, performs the steps of the above-mentioned wireless terminal access management method.
Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this embodiment are the same as the beneficial effects of the wireless terminal access management method provided by the foregoing technical solution, and are not described herein again.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the invention may be implemented by hardware instructions related to a program, the program may be stored in a computer-readable storage medium, and when executed, the program includes the steps of the method of the embodiment, and the storage medium may be: ROM/RAM, magnetic disks, optical disks, memory cards, and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (4)
1. A method for wireless terminal access management, comprising:
the wireless access point judges whether the wireless terminal is allowed to access or not according to the message signal intensity of the wireless terminal access request;
when the wireless terminal accesses the wireless access point, dynamically judging whether to remove the access relation of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal intensity of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and a preset lowest signal intensity threshold value allowing access;
the method for judging whether the wireless terminal is allowed to access by the wireless access point according to the message signal strength of the wireless terminal access request comprises the following steps:
the wireless access point detects the message signal strength of a wireless terminal access request, and when the message signal strength is greater than the minimum signal strength threshold value, the wireless terminal is allowed to access the wireless access point; or the wireless access point detects the current channel utilization rate, and when the current channel utilization rate is less than M and satisfies the formula L < F-D, the wireless terminal is allowed to access the wireless access point, wherein L represents the message signal strength value, F represents the minimum signal strength threshold value, D represents the signal strength expansion value, and M represents the first threshold value of the channel utilization rate;
the method for dynamically judging whether to release the access relation of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and a preset lowest signal strength threshold value allowing access comprises the following steps:
performing integral calculation on the wireless terminal by adopting a counting algorithm, and when the current channel utilization rate is greater than N, the packet sending signal intensity of the wireless terminal is greater than F, and the negotiation rate of the wireless terminal and the wireless access point is greater than Q, subtracting one from the integral of the wireless terminal, wherein the initial value and the minimum value of the integral of the wireless terminal accessed to the wireless access point are both zero, N represents a second threshold value of the channel utilization rate, and N is greater than M;
when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral;
when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal;
further comprising:
when the wireless terminal's packet-transmitted signal strength is less than the difference of the minimum signal strength threshold minus the signal strength spread value, the difference adds the wireless terminal's integral to R every time E is increased, R = (F-D-L)/E + 1.
2. The method of claim 1, further comprising:
and if the same wireless terminal is simultaneously positioned in the signal coverage range of a plurality of wireless access points, preferentially accessing the wireless access points corresponding to the small integral value.
3. A wireless terminal access management system, comprising:
the judging unit is used for judging whether the wireless terminal is allowed to be accessed or not by the wireless access point according to the message signal strength of the wireless terminal access request;
the processing unit is used for dynamically judging whether to release the access relation of the wireless terminal according to the current channel utilization rate of the wireless access point, the packet sending signal strength of the wireless terminal, the negotiation rate of the wireless terminal and the wireless access point and a preset lowest signal strength threshold value allowing access when the wireless terminal accesses the wireless access point;
the judging unit is used for detecting the message signal strength of a wireless terminal access request by the wireless access point, and allowing the wireless terminal to access the wireless access point when the message signal strength is greater than the minimum signal strength threshold value; or,
the wireless access point is used for detecting the current channel utilization rate, and when the current channel utilization rate is less than M and meets the formula L < F-D, the wireless terminal is allowed to access the wireless access point; wherein, L represents the message signal strength value, F represents the lowest signal strength threshold value, D represents a signal strength spread value, and M represents a first threshold value of channel utilization;
the processing unit is used for performing integral calculation on the wireless terminal by adopting a counting algorithm, when the current channel utilization rate is greater than N, the packet sending signal intensity of the wireless terminal is greater than F, and the negotiation rate of the wireless terminal and the wireless access point is greater than Q, the integral of the wireless terminal is reduced by one, the integral initial value and the integral minimum value of the wireless terminal accessed to the wireless access point are both zero, N represents a second threshold value of the channel utilization rate, and N is greater than M;
when the packet sending signal strength of the wireless terminal is smaller than the lowest signal strength threshold value and is larger than the difference value of the lowest signal strength threshold value minus the signal strength expansion value, or the negotiation rate of the wireless terminal and the wireless access point is smaller than Q, adding one to the wireless terminal integral;
when the integral corresponding to the wireless terminal is larger than H, the wireless access point releases the access relation of the wireless terminal;
further comprising:
when the wireless terminal's packet-transmitted signal strength is less than the difference of the minimum signal strength threshold minus the signal strength spread value, the difference adds the wireless terminal's integral to R every time E is increased, R = (F-D-L)/E + 1.
4. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method as set forth in claim 1 or 2.
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| CN106454837A (en) * | 2016-08-25 | 2017-02-22 | 上海斐讯数据通信技术有限公司 | Access point switching device and switching method thereof |
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