WO2016188339A1 - 无线局域网的负载均衡方法及无线接入点 - Google Patents
无线局域网的负载均衡方法及无线接入点 Download PDFInfo
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- WO2016188339A1 WO2016188339A1 PCT/CN2016/082243 CN2016082243W WO2016188339A1 WO 2016188339 A1 WO2016188339 A1 WO 2016188339A1 CN 2016082243 W CN2016082243 W CN 2016082243W WO 2016188339 A1 WO2016188339 A1 WO 2016188339A1
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- access point
- wireless access
- wireless
- load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/086—Load balancing or load distribution among access entities
- H04W28/0861—Load balancing or load distribution among access entities between base stations
Definitions
- This document relates to but not limited to the field of communication technologies, and in particular, to a load balancing method for a wireless local area network and a wireless access point.
- Wireless Local Area Networks is a wireless data network that wirelessly constructs a local area network and uses electromagnetic waves to transmit and receive data in the air.
- the wireless local area network includes a station (STA) and an access point (AP), and the station sends a probe request and an association request to the wireless access point to access the wireless access point.
- STA station
- AP access point
- the infrastructure of a wireless local area network is divided into a "fat” AP architecture and a “thin” AP architecture.
- the "fat” AP architecture refers to the traditional wireless access architecture.
- Each AP is independent of each other and managed separately.
- the adjacent APs with relatively weak signals are relatively weak.
- the load between APs will be unbalanced, which will affect the use of the site. For example, when multiple sites access AP1 with better signal, the traffic and peak rate of each site will decrease.
- the new site is connected, because the load of the AP1 is too heavy, the access request of the new site is repeatedly rejected, and the access time is increased.
- the "thin" AP architecture refers to the wireless LAN architecture in which the AP is centrally managed by the Access Controller (AC). The AC centrally manages all the NEs in the WLAN, and balances the load of each AP through the AC. Under the "thin” AP architecture, an additional AC is required for load balancing and increased costs.
- AC Access Controller
- Embodiments of the present invention provide a load balancing method for a wireless local area network and a wireless access point, which can achieve the technical effect of optimizing load balancing in a wireless local area network without adding an additional wireless access controller.
- the embodiment of the invention provides a load balancing method for a wireless local area network, and the method includes:
- the current wireless access point receives an association request sent by the station
- the current wireless access point acquires a wireless load of the current wireless access point and other wireless loads capable of detecting a wireless access point of the station;
- the current wireless access point Determining, by the current wireless access point, whether the current wireless access point meets a preset access condition according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station. If yes, the current wireless access point allows the site to access, and if not, the current wireless access point denies the site access.
- the current wireless access point determines, according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station, whether the current wireless access point satisfies the pre- An access condition is provided, if the current wireless access point allows the site to access, and if not, the current wireless access point rejects the site access step, the method further includes:
- the current wireless access point determines, according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station, whether the current wireless access point satisfies the pre- Setting the access condition, if yes, the current wireless access point allows the site to access, and if not, the step of the current wireless access point rejecting the site access includes:
- the current wireless access point subtracts a preset load difference from a wireless load of the current wireless access point a value to obtain a new wireless load of the current wireless access point;
- the current wireless access point Determining, by the current wireless access point, whether the new wireless load is smaller than other wireless load capable of detecting a wireless access point of the station, and if yes, the current wireless access point allows the station to access, If not, the current wireless access point denies the site access.
- the method before the step of acquiring, by the current wireless access point, the wireless load of the current wireless access point and the wireless load of the wireless access point of the site, the method further includes:
- the current wireless access point records the number of requests of the association request sent by the station within a preset time
- the current wireless access point determines whether the number of requests is less than a preset number of thresholds
- the step that the current wireless access point acquires the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station.
- the current wireless access point is a dual-band wireless access point, and the station is a dual-band site;
- the step of the current wireless access point allowing the site to access includes:
- the current wireless access point acquires a wireless load of the current wireless access point in a first frequency band and a wireless load in a second frequency band;
- the station When the wireless load of the current wireless access point in the first frequency band is less than the wireless load in the second frequency band, the station is connected to the first frequency band of the current wireless access point.
- an embodiment of the present invention further provides a wireless access point, where the wireless access point includes:
- a receiving module configured to receive an association request sent by the station
- Obtaining a module configured to acquire a wireless load of the wireless access point and other wireless load capable of detecting a wireless access point of the station;
- Determining a module configured to detect the wireless load according to the wireless access point and other a wireless load of the wireless access point of the station, determining whether the wireless access point meets a preset access condition
- the association processing module is configured to allow the site to access when the wireless access point meets a preset access condition, and reject the site when the wireless access point does not meet a preset access condition In.
- the wireless access point further includes: a first determining module, configured to determine whether the wireless load of the wireless access point is greater than or equal to a preset load threshold;
- the determining module is further configured to: when the determination result of the determining module is that the wireless load of the wireless access point is greater than or equal to a preset load threshold, according to the wireless load of the wireless access point and other detectable And determining, by the wireless load of the wireless access point of the station, whether the wireless access point meets a preset access condition.
- the determining module includes:
- a calculating unit configured to subtract a preset load difference from a wireless load of the wireless access point to obtain a new wireless load of the wireless access point
- a determining unit configured to determine whether the new wireless load is smaller than another wireless load capable of detecting the wireless access point of the station, and if yes, determining that the wireless access point meets a preset access condition, if not And determining that the wireless access point does not meet the preset access condition.
- the wireless access point further includes: a recording module, configured to record a number of requests of the association request sent by the station in a preset time; and a second determining module, configured to determine whether the number of requests is less than a preset Set the threshold value;
- the acquiring module is further configured to acquire, when the number of requests is less than a preset number of thresholds, a wireless load of the wireless access point and other wireless loads capable of detecting a wireless access point of the station.
- the wireless access point is a dual-band wireless access point, and the station is a dual-band site;
- the association processing module includes:
- An acquiring unit configured to acquire a wireless load of the wireless access point in a first frequency band and a wireless load in a second frequency band;
- the association processing unit is configured to: when the wireless load of the wireless access point in the first frequency band is greater than or equal to the wireless load in the second frequency band, connect the station to the second frequency band of the wireless access point; and When the wireless access point has a wireless load in the first frequency band that is less than a wireless load in the second frequency band, the station is connected to the first frequency band of the wireless access point.
- the current wireless access point receives the association request sent by the station; the current wireless access point acquires the wireless load of the current wireless access point and the other can detect the The wireless load of the wireless access point of the station; the current wireless access point determines the current wireless access point according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station Whether the preset access condition is met, and if yes, the current wireless access point allows the station to access, and if not, the current wireless access point denies the site access; that is, the current wireless access point receives When the association sends the association request, it can determine whether the station can access the current wireless access point according to the wireless load of the current wireless access point and other wireless load of the wireless access point that can detect the site, so that When the wireless load of the current wireless access point is large, the site can be distributed to other wireless access points, thereby optimizing the load balancing effect in the wireless local area network.
- FIG. 1 is a schematic flowchart of a load balancing method of a wireless local area network according to a first embodiment of the present invention
- FIG. 2 is a schematic flowchart of a load balancing method of a wireless local area network according to a second embodiment of the present invention
- FIG. 3 is a schematic flowchart of a step S30 in a method for load balancing a wireless local area network according to an embodiment of the present invention
- FIG. 4 is a schematic flowchart of a load balancing method of a wireless local area network according to a third embodiment of the present invention.
- FIG. 5 is a schematic diagram of a detailed process of allowing a current wireless access point to allow access to a site in a load balancing method of a wireless local area network according to an embodiment of the present invention
- FIG. 6 is a schematic structural diagram of a wireless access point according to a first embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of a wireless access point according to a second embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a determining module in a wireless access point according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a wireless access point according to a third embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of an association processing module in a wireless access point according to an embodiment of the present invention.
- FIG. 1 is a schematic flowchart of a load balancing method for a wireless local area network according to a first embodiment of the present invention, where the method includes:
- the current wireless access point receives an association request sent by the station.
- the current wireless access point may be a single-band wireless access point or a dual-band wireless access point.
- the current wireless access point is a dual-band wireless access point, and may be in the first frequency band and the second frequency.
- the first frequency band is 2.4G and the second frequency band is 5.8G
- the first frequency band is 5.8G and the second frequency band is 2.4G, that is, the current wireless access point can be in the first frequency band and
- the second band receives the association request sent by the station.
- the current wireless access point acquires a wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station.
- the wireless load of the current wireless access point is obtained, including: the number of stations connected to the current wireless access point, the current wireless access point, and the current wireless access point. Determining one or more of the duty cycles of the wireless access point, as in an embodiment, the wireless load of the current wireless access point is determined by the number of stations to which the current wireless access point is connected, such as the current The number of wireless access point connection sites is five, and the current wireless access point has a wireless load of 5; in another embodiment, the wireless load of the current wireless access point is occupied by the current wireless access point.
- the ratio is determined, if the current wireless access point has a duty ratio of 40%, the wireless load of the current wireless access point is 40%; in another embodiment, the wireless load of the current wireless access point is If the number of stations connected to the current wireless access point and the duty ratio of the current wireless access point are determined by two load items, a weight is required for each load item, and the number of stations connected to the current wireless access point is determined. And current wireless access point Duty ratio is normalized, to obtain the current wireless access point load.
- the wireless load of the current wireless access point is the sum of the loads of the current wireless access point in the two frequency bands.
- the current wireless access point stores a first load list of its own, including a basic service set identifier, a wireless load, and a detected site in the first load list, as shown in Table 1,
- a first load list of the current wireless access point AP1 the current wireless access point can read the wireless load of the current wireless access point from the first load list.
- the basic service set identifier in the first load list is an identifier of a basic service set in which the current wireless access point is located. Different wireless access points have different basic service set identifiers.
- the basic service set identifier in the first load list may be one or two, and the current wireless access point is in the first load list.
- the basic service set identifier When the basic service set identifier is one, the basic service set identifier corresponds to two frequency bands, and when the basic service set identifier in the first load list of the current wireless access point is two, each basic service set identifier The symbol corresponds to a band of the current wireless access point.
- the current wireless access point updates the first load list according to a preset period. For example, when a new station joins the current wireless access point or a station leaves the current wireless access point, the first time is updated in a preset period. A list of loads.
- the current wireless access point broadcasts its first load list to surrounding wireless access points, which are wireless access points participating in load balancing.
- other wireless access points that can detect the wireless access point of the station are also acquired, and other wireless access points that can detect the station are wireless access points participating in load balancing.
- Other wireless load that can detect the wireless access point of the station can pass the number of other stations that can detect the wireless access point of the station, and the other wireless access points that can detect the station, One or more of the other duty cycles of the wireless access point that can detect the site.
- the wireless load of the other wireless access point capable of detecting the site is the other wireless access point capable of detecting the site. The sum of the loads in the two bands.
- the current wireless access point receives the wireless access point around the current wireless access point.
- a list of loads that are broadcasted the load list includes a basic service set identifier, a wireless load, and a detected site, as shown in Table 2, a list of loads broadcast by the wireless access point AP2 around the current wireless access point;
- the load list broadcast by the wireless access point AP3 around the current wireless access point then the current wireless access point selects and detects from the load list broadcasted by each wireless access point around the current wireless access point.
- the site includes a load list of sites that send association requests to the current wireless access point, and generates a load balancing candidate list including a site that sends the association request, a basic service set identifier, and a wireless load, such as a table.
- the station that sends the association request to the current wireless access point is STA5; the current wireless access point reads from the load balancing candidate list other wireless loads that can scan the wireless access point of the station.
- the current wireless access point determines, according to the wireless load of the current wireless access point and the wireless load of the wireless access point that can detect the site, whether the current wireless access point meets the preset access condition, and if If satisfied, the current wireless access point allows the site to access, and if not, the current wireless access point denies the site access.
- the current wireless access point determines whether the site can be allowed to access according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the site. In an embodiment, only the When the wireless load of the current wireless access point is smaller than the wireless load of the wireless access point that can detect the site, the current wireless access point is considered to meet the preset access condition. When the current wireless access point meets the preset access condition, the current wireless access point allows the site to access. Optionally, the current wireless access point sends an association consent response to the site, and the site receives the association. After agreeing to respond, establish a connection with the current wireless access point. If the current wireless access point does not meet the preset access condition, the current wireless access point denies the site access.
- the current wireless access point sends an association rejection response to the site, and the association rejects the response.
- the basic service set identifier of the wireless access point recommended to the site after receiving the association rejection response, the site sends an association request to the corresponding wireless access point according to the basic service set identifier in the association rejection response.
- the current wireless access point receives the association request sent by the station; the current wireless access point acquires the wireless load of the current wireless access point and other wireless load that can detect the wireless access point of the station; The current wireless access point determines, according to the wireless load of the current wireless access point and other wireless loads that can detect the wireless access point of the station, whether the current wireless access point meets the preset access condition, and if so, The current wireless access point allows the site to access.
- the current wireless access point denies the site access; that is, when the current wireless access point receives the association request sent by the site, according to the current
- the wireless load of the wireless access point and other wireless loads that can detect the wireless access point of the station determine whether the station can access the current wireless access point, so that when the wireless load of the current wireless access point is large
- the site can be distributed to other wireless access points to optimize load balancing in the WLAN.
- FIG. 2 is a schematic flowchart diagram of a load balancing method for a wireless local area network according to a second embodiment of the present invention.
- the method further includes:
- step S40 The current wireless access point determines whether the wireless load of the current wireless access point is greater than or equal to a preset load threshold. If yes, step S30 is performed, and if not, step S50 is performed.
- the preset load threshold can be preset according to needs, such as the wireless load of the current wireless access point.
- the preset load threshold is an integer, such as the preset load threshold is 10; if the wireless load of the current wireless access point is determined by the current wireless access
- the preset load threshold is a percentage, for example, the preset load threshold is 40%.
- the current wireless access point determines whether the wireless load of the current wireless access point is greater than or equal to a preset load threshold, to determine whether the current wireless access point can agree to the site access for sending the association request, If the wireless load of the current wireless access point is less than the preset load threshold, it is considered that the current wireless access point has the capability to access the site, and the site can be directly allowed to access without equalizing the site to the neighbor. Other wireless access points.
- the current wireless access point allows the site to access.
- FIG. 3 is a schematic flowchart diagram of step S30 in a load balancing method for a wireless local area network according to an embodiment of the present invention, which is described in detail as follows:
- the current wireless access point subtracts the preset load difference from the wireless load of the current wireless access point to obtain a new wireless load of the current wireless access point.
- the preset load difference may be preset according to requirements. For example, when the wireless load of the current wireless access point is determined by the number of stations connected to the current wireless access point, the preset load difference is an integer, such as the load difference.
- the value threshold is 5; if the wireless load of the current wireless access point is determined by the duty ratio of the current wireless access point, the load difference threshold is a percentage, such as the load difference threshold is 5%.
- the current wireless access point determines whether the new wireless load is smaller than another wireless load that can detect the wireless access point of the station. If yes, the current wireless access point allows the station to access, if not, The current wireless access point denies access to the site.
- the current wireless access point compares the new wireless load with other wireless loads that can detect the wireless access point of the station to determine whether the current wireless access point can agree to send the associated request to the site. Access, when the new wireless load is less than the wireless load of other wireless access points that can detect the station, the current wireless access point is considered to allow access to the station; when the new wireless load is greater than or equal to the other If the wireless load of the wireless access point of the station can be detected, the current wireless access point is not allowed to access the station, and the station is denied access. Optionally, the current wireless access point sends the wireless access point to the station.
- the association rejects the response may include recommending to the site a basic service set identifier of the wireless access point, after receiving the association rejection response, the station sends an association request to the corresponding wireless access point according to the basic service set identifier in the association rejection response; the recommended wireless connection
- the ingress point can be the wireless access point with the least wireless load among the wireless access points that can detect the site.
- FIG. 4 is a flowchart of a load balancing method for a wireless local area network according to a third embodiment of the present invention.
- the method further includes:
- the current wireless access point records the number of requests of the association request sent by the station within a preset time.
- the current wireless access point When receiving the association request of the site, the current wireless access point records the number of requests of the association request sent by the site within a preset time. Optionally, the current wireless access point receives the association request of the site. When the number of requests for the site recorded before is incremented by 1, the number of requests for the site within the preset time is obtained. Generally, after the preset time is reached, the number of requests of the recorded site is cleared, and when the association request of the site is received again, the number of requests for the site is assigned a value of 1, and the timing starts, and so on. When the subsequent association request of the site is received, the number of requests for the site is incremented; when the timing reaches the preset time, the number of requests for the site is cleared.
- the current wireless access point determines whether the number of requests is less than a preset number of thresholds; if the number of requests is less than a preset number of thresholds, step S20 is performed, and if the number of requests is greater than or equal to a preset number of thresholds, performing steps S80.
- the current wireless access point compares the number of requests with a preset number of thresholds to determine whether the current wireless access point can allow the site access to send the association request; when the number of requests is greater than or equal to
- the preset number of thresholds means that the number of times the site requests to join the current wireless access point has reached a maximum. In order to avoid DOS attacks on the site, the current wireless access point must allow the current association request of the site.
- step S20 may be further performed for load balancing to determine whether the station can access the current wireless access point.
- the current wireless access point allows the site to access.
- FIG. 5 is a schematic flowchart of a detailed process of allowing a current wireless access point to allow access to a site in a load balancing method of a wireless local area network according to an embodiment of the present invention, which is described in detail below.
- the current wireless access point is a dual-band wireless access point, and the station is a dual-band site;
- the steps of the current wireless access point allowing the site to access include:
- the current wireless access point acquires a wireless load of the current wireless access point in the first frequency band and a wireless load in the second frequency band.
- the first frequency band of the current wireless access point is 2.4G
- the second frequency band of the current wireless access point is 5.8G.
- the current wireless access point acquires the wireless load of the current wireless access point in the first frequency band and the wireless load in the second frequency band, including: the wireless load of the current wireless access point in the first frequency band can pass the current wireless access One or more of the number of stations connected in the first frequency band, the current wireless access point in the first frequency band, and the duty ratio of the current wireless access point in the first frequency band.
- the current The wireless load of the wireless access point in the second frequency band may be the number of stations connected in the second frequency band by the current wireless access point, the traffic of the current wireless access point in the second frequency band, and the current wireless access point in the second frequency band.
- One or more of the duty cycles are determined.
- the wireless load of the current wireless access point in the first frequency band is determined by the number of stations connected by the current wireless access point in the first frequency band, and the wireless load of the current wireless access point in the second frequency band passes the current wireless The number of stations connected by the access point in the second frequency band is determined.
- the wireless load of the current wireless access point in the first frequency band and the wireless load in the second frequency band determining to connect the station to the first frequency band or the second frequency band of the current wireless access point;
- the wireless load of the current wireless access point in the first frequency band is greater than or equal to the wireless load in the second frequency band, it indicates that the current wireless access point has a large load pressure in the first frequency band, and the The station accesses the second frequency band; when the wireless load of the current wireless access point in the first frequency band is less than the wireless load in the second frequency band, the load pressure of the current wireless access point in the first frequency band is indicated Smaller, the site can be connected to the first frequency band.
- the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
- FIG. 6 is a schematic structural diagram of a wireless access point according to a first embodiment of the present invention, where the wireless access point includes:
- the receiving module 10 is configured to receive an association request sent by the station;
- the obtaining module 20 is configured to acquire a wireless load of the wireless access point and other wireless load capable of detecting a wireless access point of the station;
- the determining module 30 is configured to determine, according to the wireless load of the wireless access point and other wireless loads that can detect the wireless access point of the wireless station, whether the wireless access point meets a preset access condition;
- the association processing module 40 is configured to allow the station to access when the wireless access point meets the preset access condition, and reject the station access when the wireless access point does not meet the preset access condition.
- the wireless access point may be a single-band wireless access point or a dual-band wireless access point.
- the wireless access point is a dual-band wireless access point, and can work in the first frequency band and the second frequency band.
- the first frequency band is 2.4G and the second frequency band is 5.8G, or the first frequency band is 5.8G and the second frequency band is 2.4G, that is, the receiving module 10 can receive the station in the first frequency band and the second frequency band.
- the acquiring module 20 is configured to acquire the wireless load of the wireless access point, including: the number of stations connected to the wireless access point by the wireless access point, the traffic of the wireless access point, and the wireless access point.
- One or more of the duty cycles are determined, as in an embodiment, the wireless load of the wireless access point is determined by the number of stations to which the wireless access point is connected, such as when the wireless access point is connected to the site.
- the wireless load of the wireless access point is 5; in another embodiment, the wireless load of the wireless access point is determined by the duty ratio of the wireless access point, such as when the wireless connection The duty cycle of the ingress point is 40%, and the wireless load of the wireless access point is 40%; in another embodiment, the wireless load of the wireless access point is the number of stations connected by the wireless access point.
- the duty cycle of the wireless access point is determined by two load items, and a weight is required for each load item, and the station connected to the wireless access point is required. The number of points and the duty cycle of the wireless access point are normalized to obtain the wireless load of the wireless access point.
- the wireless load of the wireless access point is the sum of the loads of the wireless access point in the two frequency bands.
- the wireless access point stores a first load list of its own, including a basic service set identifier, a wireless load, and a detected site in the first load list, as shown in Table 1, the wireless A first load list of the access point AP1, the acquisition module 20 is configured to read the wireless load of the wireless access point from the first load list.
- the basic service set identifier in the first load list is an identifier of the basic service set in which the wireless access point is located. Different wireless access points have different basic service set identifiers.
- the basic service set identifier in the first load list may be one or two, when the wireless access point is in the first load list.
- the basic service set identifier When the basic service set identifier is one, the basic service set identifier corresponds to two frequency bands, and when the basic service set identifier in the first load list of the wireless access point is two, each basic service set identifier The symbol corresponds to a band of the wireless access point.
- the wireless access point updates the first load list according to a preset period. For example, when a new site joins the wireless access point or a station leaves the wireless access point, the first load list is updated in a preset period. .
- the wireless access point broadcasts its first load list to surrounding wireless access points, which are wireless access points participating in load balancing.
- the acquisition module 20 is configured to acquire other wireless load points of the wireless access point that can detect the site, and other wireless access points that can detect the site are wireless access points participating in load balancing.
- Other wireless load that can detect the wireless access point of the station can pass the number of other stations that can detect the wireless access point of the station, and the other wireless access points that can detect the station, One or more of the other duty cycles of the wireless access point that can detect the site.
- the wireless load of the other wireless access point capable of detecting the site is the other wireless access point capable of detecting the site. The sum of the loads in the two bands.
- the wireless access point receives a load list broadcast by each wireless access point around the wireless access point, where the load list includes a basic service set identifier, a wireless load, and a detected site, as shown in Table 2.
- a list of loads broadcast by the wireless access point AP2 around the wireless access point As shown, the load list broadcast by the wireless access point AP3 around the wireless access point; then the acquisition module 20 of the wireless access point is set to be from the load list broadcasted by each wireless access point around the wireless access point
- Selecting the detected site includes a load list of the site that sends the association request to the wireless access point, and generates a load balancing candidate list including the site that sends the association request, the basic service set identifier, and the wireless load.
- the station that sends the association request to the wireless access point is STA5; the acquisition module 20 of the wireless access point is configured to read another wireless access that can scan the station from the load balancing candidate list. The wireless load of the point.
- the determining module 30 is configured to determine whether the site can be allowed to access according to the wireless load of the wireless access point and other wireless loads that can detect the wireless access point of the site. In an embodiment, only in the wireless When the wireless load of the access point is smaller than other wireless loads that can detect the wireless access point of the site, the wireless access point is considered to meet the preset access condition.
- the association processing module 40 is configured to allow the site to access.
- the association processing module 40 is configured to send an association consent response to the site, and the site receives the After the association agrees to respond, a connection is established with the wireless access point.
- the association processing module 40 is configured to reject the site access.
- the association processing module 40 is configured to send an association rejection response to the site, and the association rejects the response.
- the basic service set identifier of the wireless access point recommended to the site may be included, and after receiving the association rejection response, the site sends an association request to the corresponding wireless access point according to the basic service set identifier in the association rejection response. .
- FIG. 7 is a schematic structural diagram of a wireless access point according to a second embodiment of the present invention.
- the wireless access point further includes: a first determining module 50, configured to determine whether the wireless load of the wireless access point is greater than or equal to a preset load threshold;
- the determining module 30 is further configured to: when the determining result of the determining module is that the wireless load of the wireless access point is greater than or equal to a preset load threshold, according to the wireless load of the wireless access point and other can detect the site The wireless load of the wireless access point determines whether the wireless access point meets the preset access conditions.
- the preset load threshold may be preset according to requirements. For example, when the wireless load of the wireless access point is determined by the number of stations connected by the wireless access point, the preset load threshold is an integer, such as the preset load. The threshold is 10; if the wireless load of the wireless access point is determined by the duty cycle of the wireless access point, The preset load threshold is a percentage, such as the preset load threshold is 40%.
- the first determining module 50 is configured to determine whether the wireless load of the wireless access point is greater than or equal to a preset load threshold, to determine whether the wireless access point can agree to send the association request for the site access, when the wireless access point If the wireless load is less than the preset load threshold, the wireless access point is considered to have the ability to access the station, and the station can be directly allowed to access without equalizing the station to other wireless access points of the neighbor.
- FIG. 8 is a schematic structural diagram of a determining module in a wireless access point according to an embodiment of the present invention.
- the determining module 30 includes:
- the calculating unit 31 is configured to subtract the preset load difference from the wireless load of the wireless access point to obtain a new wireless load of the wireless access point;
- the determining unit 32 is configured to determine whether the new wireless load is smaller than other wireless load capable of detecting the wireless access point of the station, and if yes, determine that the wireless access point meets a preset access condition, and if not, determine The wireless access point does not satisfy the preset access condition.
- the preset load difference may be preset according to requirements. For example, when the wireless load of the wireless access point is determined by the number of stations connected by the wireless access point, the preset load difference is an integer, such as the load difference.
- the threshold is 5; if the wireless load of the wireless access point is determined by the duty cycle of the wireless access point, the load difference threshold is a percentage, such as the load difference threshold is 5%.
- the determining unit 32 is configured to compare the new wireless load with other wireless loads that can detect the wireless access point of the station to determine whether the wireless access point can agree to send the associated request for site access when the new
- the wireless load is smaller than other wireless load that can detect the wireless access point of the station, and the wireless access point is considered to meet the preset access condition, and the wireless hotspot can allow the station to access; when the new wireless load is greater than Or equal to other wireless load that can detect the wireless access point of the station, the wireless access point is considered not to meet the preset access condition, and the wireless hotspot cannot allow the station to access.
- FIG. 9 is a schematic structural diagram of a wireless access point according to a third embodiment of the present invention.
- the wireless access point further includes:
- the recording module 60 is configured to record the number of requests of the association request sent by the station within a preset time;
- the second determining module 70 is configured to determine whether the number of requests is less than a preset number of thresholds;
- the obtaining module 20 is further configured to acquire a wireless load of the wireless access point and other wireless loads capable of detecting the wireless access point of the station when the number of requests is less than a preset number of thresholds.
- the recording module 60 is configured to record the number of requests of the association request sent by the station within a preset time when the receiving module 10 receives the association request of the site.
- the recording module 60 is configured to receive at the receiving module 10 When the association request to the site is increased, the number of requests for the site recorded before is incremented by one to obtain the number of requests for the site within a preset time.
- the recording module 60 is set to clear the recorded number of requests of the site, and then, when receiving the association request of the site again, assign a value of 1 to the number of requests of the site, and start Timing, and so on, when the subsequent association request of the site is received, the number of requests for the site is incremented; when the timing reaches the preset time, the number of requests for the site is cleared.
- the second determining module 70 is configured to compare the number of requests with a preset number of thresholds to determine whether the wireless access point can allow the site access to send the association request; when the number of requests is greater than or equal to the preset number of valves
- the value means that the number of times the site requests to join the wireless access point has reached a maximum. In order to avoid DOS attacks on the site, the wireless access point must allow the current association request of the site.
- FIG. 10 is a schematic structural diagram of an association processing module in a wireless access point according to an embodiment of the present invention.
- the wireless access point is a dual-band wireless access point, and the station is a dual-band site;
- the association processing module 40 includes:
- the obtaining unit 41 is configured to acquire a wireless load of the wireless access point in the first frequency band and a wireless load in the second frequency band;
- the association processing unit 42 is configured to connect the station to the second frequency band of the wireless access point when the wireless load of the wireless access point in the first frequency band is greater than or equal to the wireless load in the second frequency band; and when the wireless When the wireless load of the access point in the first frequency band is smaller than the wireless load in the second frequency band, the access point is connected to the first frequency band of the wireless access point.
- the first frequency band of the wireless access point is 2.4G
- the second frequency band of the wireless access point is 5.8G.
- the acquiring unit 41 is configured to acquire a wireless load of the wireless access point in the first frequency band and a wireless load in the second frequency band.
- the wireless load of the wireless access point in the first frequency band may pass through the wireless access point.
- the wireless access point The wireless load in the second frequency band may be one of the number of stations connected in the second frequency band by the wireless access point, the traffic of the wireless access point in the second frequency band, and the duty ratio of the wireless access point in the second frequency band. Or multiple determinations.
- the wireless load of the wireless access point in the first frequency band is determined by the number of stations connected by the wireless access point in the first frequency band, and the wireless load of the wireless access point in the second frequency band is used by the wireless access point. The number of stations connected in the second frequency band is determined.
- the association processing unit 42 is configured to determine, according to the wireless load of the wireless access point in the first frequency band and the wireless load in the second frequency band, the first frequency band or the second frequency band that connects the station to the wireless access point; Optionally, when the wireless load of the wireless access point in the first frequency band is greater than or equal to the wireless load in the second frequency band, it indicates that the wireless access point has a large load pressure in the first frequency band, and the site needs to be Accessing the second frequency band; when the wireless load of the wireless access point in the first frequency band is smaller than the wireless load in the second frequency band, the load pressure of the wireless access point in the first frequency band is small, and the station can be Access to the first frequency band.
- each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
- the invention is not limited to any specific form of combination of hardware and software.
- the above technical solution realizes that when the wireless load of the current wireless access point is large, the station requesting access can be distributed to other wireless access points, thereby optimizing the load balancing effect in the wireless local area network.
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Abstract
一种无线局域网的负载均衡方法和无线接入点，包括：当前无线接入点接收站点发送的关联请求；所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载；所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入。采用上述技术方案，可在当前无线接入点的无线负载较大时，该站点能够被分发到其他无线接入点，从而优化了无线局域网中的负载均衡效果。
Description
本文涉及但不限于通信技术领域，尤其涉及一种无线局域网的负载均衡方法及无线接入点。
无线局域网(WLAN，Wireless Local Area Networks)是一种无线数据网络，它以无线的方式构建局域网，利用电磁波在空气中发送和接收数据。无线局域网中包括站点(STA)和无线接入点(AP，Access Point)，站点向无线接入点发送探测请求和关联请求，以接入无线接入点。
无线局域网的基础架构分为“胖”AP架构和“瘦”AP架构两种。“胖”AP架构是指传统的无线接入架构，每个AP之间相互独立，各自管理；当多个站点都接入信号较好的同一个AP，而相邻的信号相对较弱的AP基本没有终端接入时，将使得AP之间的负载不均衡，进而影响站点的使用，如当多个站点都接入信号较好的AP1时，每个站点的流量和峰值速率都会下降，而新的站点接入时，由于该AP1的负载过重，会反复拒绝该新站点的接入请求，增加接入时间，而很可能相邻的信号较弱的AP2负荷很轻，且该AP2可以为该新站点提供服务，但是由于各个AP相互独自管理，该AP1无法将该新站点均衡到AP2。“瘦”AP架构是指AP由无线接入控制器(Access Controller，AC)集中管理配置的无线局域网架构，AC集中管理无线局域网中的所有网元，通过该AC对各个AP的负载进行均衡，在该“瘦”AP架构下，需要额外增加AC进行负载均衡，增加成本。
上述内容仅用于辅助理解本发明的技术方案，并不代表承认上述内容是现有技术。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种无线局域网的负载均衡方法及无线接入点，能够实现无需增加额外的无线接入控制器即可达到优化无线局域网中的负载均衡的技术效果。
本发明实施例提供一种无线局域网的负载均衡方法，该方法包括：
当前无线接入点接收站点发送的关联请求；
所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载；
所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入。
可选的，所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入的步骤之前，该方法还包括：
所述当前无线接入点判断所述当前无线接入点的无线负载是否大于或等于预设负载阀值，如果是，则执行步骤所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入。
可选的，所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入的步骤包括：
所述当前无线接入点将所述当前无线接入点的无线负载减去预设负载差
值，得到所述当前无线接入点的新的无线负载；
所述当前无线接入点判断所述新的无线负载是否小于其他能探测到所述站点的无线接入点的无线负载，如果是，则所述当前无线接入点允许所述站点接入，如果不是，所述当前无线接入点拒绝所述站点接入。
可选的，所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载的步骤之前，该方法还包括：
所述当前无线接入点记录所述站点发送的关联请求在预设时间内的请求次数；
所述当前无线接入点判断所述请求次数是否小于预设次数阀值；
若所述请求次数小于预设次数阀值，则执行步骤所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载。
可选的，所述当前无线接入点是双频段无线接入点，所述站点是双频段站点；
所述当前无线接入点允许所述站点接入的步骤包括：
所述当前无线接入点获取所述当前无线接入点在第一频段的无线负载及在第二频段的无线负载；
当所述当前无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将所述站点接入当前无线接入点的第二频段；
当所述当前无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将所述站点接入当前无线接入点的第一频段。
此外，本发明实施例还提供一种无线接入点，该无线接入点包括：
接收模块，设置为接收站点发送的关联请求；
获取模块，设置为获取所述无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载；
确定模块，设置为根据所述无线接入点的无线负载和其他能探测到所述
站点的无线接入点的无线负载，确定所述无线接入点是否满足预设接入条件；
关联处理模块，设置为在所述无线接入点满足预设接入条件时，允许所述站点接入，及在所述无线接入点不满足预设接入条件时，拒绝所述站点接入。
可选的，所述无线接入点还包括：第一判断模块，设置为判断所述无线接入点的无线负载是否大于或等于预设负载阀值；
所述确定模块，还设置为在所述判断模块的判断结果为所述无线接入点的无线负载大于或等于预设负载阀值时，根据所述无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述无线接入点是否满足预设接入条件。
可选的，所述确定模块包括：
计算单元，设置为将所述无线接入点的无线负载减去预设负载差值，得到所述无线接入点的新的无线负载；
确定单元，设置为判断所述新的无线负载是否小于其他能探测到所述站点的无线接入点的无线负载，如果是，则确定所述无线接入点满足预设接入条件，如果不是，确定所述无线接入点不满足预设接入条件。
可选的，所述无线接入点还包括：记录模块，设置为记录所述站点发送的关联请求在预设时间内的请求次数；第二判断模块，设置为判断所述请求次数是否小于预设次数阀值；
所述获取模块，还设置为在所述请求次数小于预设次数阀值时，获取所述无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载。
可选的，所述无线接入点是双频段无线接入点，所述站点是双频段站点；
所述关联处理模块包括：
获取单元，设置为获取所述无线接入点在第一频段的无线负载及在第二频段的无线负载；
关联处理单元，设置为当所述无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将所述站点接入无线接入点的第二频段；及
当所述无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将所述站点接入无线接入点的第一频段。
本发明实施例的无线局域网的负载均衡方法及无线接入点，当前无线接入点接收站点发送的关联请求；该当前无线接入点获取该当前无线接入点的无线负载及其他能探测到该站点的无线接入点的无线负载；该当前无线接入点根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该当前无线接入点是否满足预设接入条件，若满足，则该当前无线接入点允许该站点接入，若不满足，该当前无线接入点拒绝该站点接入；即该当前无线接入点在接收到站点发送的关联请求时，可根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该站点能否接入该当前无线接入点，使得在当前无线接入点的无线负载较大时，该站点能够分发到其他无线接入点，从而优化了无线局域网中的负载均衡效果。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本发明第一实施例的无线局域网的负载均衡方法的流程示意图；
图2为本发明第二实施例的无线局域网的负载均衡方法的流程示意图；
图3为本发明实施例无线局域网的负载均衡方法中步骤S30的详细流程示意图；
图4为本发明第三实施例的无线局域网的负载均衡方法的流程示意图；
图5为本发明实施例无线局域网的负载均衡方法中该当前无线接入点允许该站点接入的详细流程示意图；
图6为本发明第一实施例的无线接入点的结构示意图；
图7为本发明第二实施例的无线接入点的结构示意图；
图8为本发明实施例无线接入点中确定模块的详细结构示意图；
图9为本发明第三实施例的无线接入点的结构示意图；
图10为本发明实施例无线接入点中的关联处理模块的详细结构示意图。
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
参照图1，图1为本发明第一实施例的无线局域网的负载均衡方法的流程示意图，该方法包括：
S10、当前无线接入点接收站点发送的关联请求。
该当前无线接入点可以为单频段无线接入点或双频段无线接入点，在一实施例中，该当前无线接入点为双频段无线接入点，可在第一频段和第二频段工作，该第一频段为2.4G和该第二频段为5.8G，或该第一频段为5.8G和该第二频段为2.4G，即该当前无线接入点可在第一频段和第二频段接收站点发送的关联请求。
S20、该当前无线接入点获取该当前无线接入点的无线负载及其他能探测到该站点的无线接入点的无线负载。
在该步骤中，获取该当前无线接入点的无线负载，包括：该当前无线接入点的无线负载可以通过该当前无线接入点连接的站点个数、当前无线接入点的流量、当前无线接入点的占空比中的一项或多项确定，如在一实施例中，该当前无线接入点的无线负载由该当前无线接入点连接的站点个数确定，如该当前无线接入点连接站点个数为5个，则该当前无线接入点的无线负载为5；在另一实施例中，该当前无线接入点的无线负载由该当前无线接入点的占空比确定，如该当前无线接入点的占空比为40％，则该当前无线接入点的无线负载为40％；在另一实施例中，该当前无线接入点的无线负载由该当前无线接入点连接的站点个数和当前无线接入点的占空比两个负载项确定，则需要为每个负载项设置一个权重，对该当前无线接入点连接的站点个数和当前无线接入点的占空比进行归一化处理，得到该当前无线接入点的无线负载。
该当前无线接入点是双频段无线接入点时，该当前无线接入点的无线负载是该当前无线接入点在两个频段的负载之和。
可选的，该当前无线接入点保存有一个其自身的第一负载列表，在该第一负载列表中包括基本服务集标识符、无线负载、探测到的站点，如表一所示，该当前无线接入点AP1的第一负载列表，该当前无线接入点可从该第一负载列表中读取该当前无线接入点的无线负载。该第一负载列表中的基本服务集标识符为该当前无线接入点所在基本服务集的标识符。不同的无线接入点的基本服务集标识符不同。可选的，该当前无线接入点是双频段无线接入点时，该第一负载列表中的基本服务集标识符可以为一个或两个，该当前无线接入点的第一负载列表中的基本服务集标识符为一个时，该基本服务集标识符对应两个频段，该当前无线接入点的第一负载列表中的基本服务集标识符为两个时，每个基本服务集标识符对应该当前无线接入点的一个频段。该当前无线接入点按照预设周期更新该第一负载列表，如当有新的站点加入该当前无线接入点或有站点离开该当前无线接入点时，则在预设周期更新该第一负载列表。该当前无线接入点将其第一负载列表广播给周围的无线接入点，该周围的无线接入点为参与负载均衡的无线接入点。
表一：
在该步骤中，还获取其他能探测到该站点的无线接入点的无线负载，其他能探测到该站点的无线接入点即为参与负载均衡的无线接入点。其他能探测到该站点的无线接入点的无线负载可以通过该其他能探测到该站点的无线接入点连接的站点个数、该其他能探测到该站点的无线接入点的流量、该其他能探测到该站点的无线接入点的占空比中的一项或多项确定。
当该其他能探测到该站点的无线接入点是双频段无线接入点时，该其他能探测到该站点的无线接入点的无线负载是该其他能探测到该站点的无线接入点在两个频段的负载之和。
可选的，该当前无线接入点接收该当前无线接入点周围的无线接入点广
播的负载列表，该负载列表包括基本服务集标识符、无线负载、探测到的站点，如表二所示，该当前无线接入点周围的无线接入点AP2广播的负载列表；如表三所示，该当前无线接入点周围的无线接入点AP3广播的负载列表；然后该当前无线接入点从该当前无线接入点周围的各个无线接入点广播的负载列表中选择探测到的站点包括向该当前无线接入点发送关联请求的站点的负载列表，并生成一个负载均衡候选列表，该负载均衡候选列表包括发送关联请求的站点、基本服务集标识符、无线负载，如表四所示，该向当前无线接入点发送关联请求的站点为STA5；该当前无线接入点从该负载均衡候选列表中读取其他能扫描该站点的无线接入点的无线负载。
表二：
表三：
表四：
S30、该当前无线接入点根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该当前无线接入点是否满足预设接入条件，若满足，则该当前无线接入点允许该站点接入，若不满足，该当前无线接入点拒绝该站点接入。
该当前无线接入点根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定能否允许该站点接入，在一实施例中，仅在该当前无线接入点的无线负载均小于其他能探测到该站点的无线接入点的无线负载时，认为该当前无线接入点满足预设接入条件。在该当前无线接入点满足预设接入条件时，该当前无线接入点允许该站点接入，可选的，该当前无线接入点向该站点发送关联同意响应，该站点接收到关联同意响应后，与该当前无线接入点建立连接。在该当前无线接入点不满足预设接入条件，该当前无线接入点拒绝该站点接入，可选的，该当前无线接入点向该站点发送关联拒绝响应，该关联拒绝响应可包括向该站点推荐的无线接入点的基本服务集标识符，该站点接收到该关联拒绝响应后，根据该关联拒绝响应中的基本服务集标识符向对应的无线接入点发送关联请求。
采用上述实施例，通过当前无线接入点接收站点发送的关联请求；该当前无线接入点获取该当前无线接入点的无线负载及其他能探测到该站点的无线接入点的无线负载；该当前无线接入点根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该当前无线接入点是否满足预设接入条件，若满足，则该当前无线接入点允许该站点接入，若不满足，该当前无线接入点拒绝该站点接入；即该当前无线接入点在接收到站点发送的关联请求时，可根据该当前无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该站点能否接入该当前无线接入点，使得在当前无线接入点的无线负载较大时，该站点能够被分发到其他无线接入点，从而优化了无线局域网中的负载均衡效果。
参照图2，图2为本发明第二实施例的无线局域网的负载均衡方法的流程示意图。
基于上述无线局域网的负载均衡方法的第一实施例，在步骤S30之前，该方法还包括：
S40、该当前无线接入点判断该当前无线接入点的无线负载是否大于或等于预设负载阀值，如果是，则执行步骤S30，如果不是，执行步骤S50。
该预设负载阀值可根据需要预先设置，如该当前无线接入点的无线负载
由该当前无线接入点连接的站点个数确定时，该预设负载阀值为整数，如该预设负载阀值为10；如该当前无线接入点的无线负载由该当前无线接入点的占空比确定时，该预设负载阀值为百分比，如该预设负载阀值为40％。
在该步骤中，该当前无线接入点判断该当前无线接入点的无线负载是否大于或等于预设负载阀值，以确定当前无线接入点能否同意发送关联请求的站点接入，该当前无线接入点的无线负载小于预设负载阀值，则认为该当前无线接入点还有能力将该站点接入，可直接允许该站点接入，而不需将该站点均衡到邻居的其他无线接入点。
S50、该当前无线接入点允许该站点接入。
参照图3，图3为本发明实施例无线局域网的负载均衡方法中步骤S30的详细流程示意图，详述如下：
S31、该当前无线接入点将该当前无线接入点的无线负载减去预设负载差值，得到该当前无线接入点的新的无线负载。
该预设负载差值可根据需要预先设置，如该当前无线接入点的无线负载由该当前无线接入点连接的站点个数确定时，该预设负载差值为整数，如该负载差值阀值为5；如该当前无线接入点的无线负载由该当前无线接入点的占空比确定时，该负载差值阀值为百分比，如该负载差值阀值为5％。
S32、该当前无线接入点判断该新的无线负载是否小于其他能探测到该站点的无线接入点的无线负载，如果是，则该当前无线接入点允许该站点接入，如果不是，该当前无线接入点拒绝该站点接入。
在该步骤中，该当前无线接入点将该新的无线负载与其他能探测到该站点的无线接入点的无线负载进行比较，以确定当前无线接入点能否同意发送关联请求的站点接入，当该新的无线负载小于其他能探测到该站点的无线接入点的无线负载，则认为该当前无线接入点可允许该站点接入；当该新的无线负载大于或等于其他能探测到该站点的无线接入点的无线负载，则认为该当前无线接入点不允许该站点接入，则拒绝该站点接入，可选的，该当前无线接入点向该站点发送关联拒绝响应，该关联拒绝响应可包括向该站点推荐
的无线接入点的基本服务集标识符，该站点接收到该关联拒绝响应后，根据该关联拒绝响应中的基本服务集标识符向对应的无线接入点发送关联请求；该推荐的无线接入点可以为其他能探测到该站点的无线接入点中无线负载最小的无线接入点。
参照图4，图4为本发明第三实施例的无线局域网的负载均衡方法的流程图。
基于上述无线局域网的负载均衡方法的第一实施例或第二实施例，在步骤S20之前，该方法还包括：
S60、该当前无线接入点记录该站点发送的关联请求在预设时间内的请求次数。
该当前无线接入点在接收到该站点的关联请求时，记录该站点发送的关联请求在预设时间内的请求次数，可选的，该当前无线接入点在接收到该站点的关联请求时，将之前记录的该站点的请求次数加1，得到该站点在预设时间内的请求次数。通常的，在达到预设时间后，将记录的该站点的请求次数清零，然后在再次接收到该站点的关联请求时，对该站点的请求次数赋值1，并开始计时，依次类推，在后续接收到该站点的关联请求时，对该站点的请求次数递增；在计时达到预设时间时，将该站点的请求次数清零。
S70、该当前无线接入点判断该请求次数是否小于预设次数阀值；若该请求次数小于预设次数阀值，则执行步骤S20，若该请求次数大于或等于预设次数阈值，执行步骤S80。
在该步骤中，该当前无线接入点将该请求次数与预设次数阀值进行比较，以确定该当前无线接入点能否允许发送关联请求的站点接入；当该请求次数大于或等于预设次数阀值时，意味着该站点请求加入该当前无线接入点的次数已经达到最大值，为了避免对该站点的DOS攻击，该当前无线接入点必须允许该站点的本次关联请求；当该请求次数小于预设次数阀值，则可继续执行步骤S20进行负载均衡，确定该站点能否接入当前无线接入点。
S80、该当前无线接入点允许该站点接入。
参照图5，图5为本发明实施例无线局域网的负载均衡方法中该当前无线接入点允许该站点接入的详细流程示意图，详述如下。
该当前无线接入点是双频段无线接入点，该站点是双频段站点；
该当前无线接入点允许该站点接入的步骤包括：
S33、该当前无线接入点获取该当前无线接入点在第一频段的无线负载及在第二频段的无线负载。
在一实施例中，该当前无线接入点的第一频段为2.4G，该当前无线接入点的第二频段为5.8G。该当前无线接入点获取该当前无线接入点在第一频段的无线负载及在第二频段的无线负载，包括:该当前无线接入点在第一频段的无线负载可以通过当前无线接入点在第一频段连接的站点个数、当前无线接入点在第一频段的流量、当前无线接入点在第一频段的占空比中的一项或多项确定，同理，该当前无线接入点在第二频段的无线负载可以通过当前无线接入点在第二频段连接的站点个数、当前无线接入点在第二频段的流量、当前无线接入点在第二频段的占空比中的一项或多项确定。可选的，该当前无线接入点在第一频段的无线负载通过当前无线接入点在第一频段连接的站点个数确定，该当前无线接入点在第二频段的无线负载通过当前无线接入点在第二频段连接的站点个数确定。
S34、当该当前无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将该站点接入当前无线接入点的第二频段；当该当前无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将该站点接入当前无线接入点的第一频段。
在该步骤中，根据该当前无线接入点在第一频段的无线负载和在第二频段的无线负载，确定将该站点接入该当前无线接入点的第一频段或第二频段；可选的，当该当前无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，则说明该当前无线接入点在第一频段的负载压力较大，则需要将该站点接入第二频段；当该当前无线接入点在第一频段的无线负载小于在第二频段的无线负载时，则说明该当前无线接入点在第一频段的负载压力
较小，可将该站点接入第一频段。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
参照图6，图6为本发明第一实施例的无线接入点的结构示意图，该无线接入点包括：
接收模块10，设置为接收站点发送的关联请求；
获取模块20，设置为获取该无线接入点的无线负载及其他能探测到该站点的无线接入点的无线负载；
确定模块30，设置为根据该无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该无线接入点是否满足预设接入条件；
关联处理模块40，设置为在该无线接入点满足预设接入条件时，允许该站点接入，在该无线接入点不满足预设接入条件时，拒绝该站点接入。
该无线接入点可以为单频段无线接入点或双频段无线接入点，在一实施例中，该无线接入点为双频段无线接入点，可在第一频段和第二频段工作，该第一频段为2.4G和该第二频段为5.8G，或该第一频段为5.8G和该第二频段为2.4G，即该接收模块10可在第一频段和第二频段接收站点发送的关联请求。
该获取模块20设置为获取该无线接入点的无线负载，包括:该无线接入点的无线负载可以通过该无线接入点连接的站点个数、无线接入点的流量、无线接入点的占空比中的一项或多项确定，如在一实施例中，该无线接入点的无线负载由该无线接入点连接的站点个数确定，如当该无线接入点连接站点个数为5个，则该无线接入点的无线负载为5；在另一实施例中，该无线接入点的无线负载由该无线接入点的占空比确定，如当该无线接入点的占空比为40％，则该无线接入点的无线负载为40％；在另一实施例中，该无线接入点的无线负载由该无线接入点连接的站点个数和无线接入点的占空比两个负载项确定，则需要为每个负载项设置一个权重，对该无线接入点连接的站
点个数和无线接入点的占空比进行归一化处理，得到该无线接入点的无线负载。
当该无线接入点是双频段无线接入点时，该无线接入点的无线负载是该无线接入点在两个频段的负载之和。
可选的，该无线接入点保存有一个其自身的第一负载列表，在该第一负载列表中包括基本服务集标识符、无线负载、探测到的站点，如表一所示，该无线接入点AP1的第一负载列表，该获取模块20设置为可从该第一负载列表中读取该无线接入点的无线负载。该第一负载列表中的基本服务集标识符为该无线接入点所在基本服务集的标识符。不同的无线接入点的基本服务集标识符不同。可选的，当该无线接入点是双频段无线接入点时，该第一负载列表中的基本服务集标识符可以为一个或两个，当该无线接入点的第一负载列表中的基本服务集标识符为一个时，该基本服务集标识符对应两个频段，当该无线接入点的第一负载列表中的基本服务集标识符为两个时，每个基本服务集标识符对应该无线接入点的一个频段。该无线接入点按照预设周期更新该第一负载列表，如当有新的站点加入该无线接入点或有站点离开该无线接入点时，则在预设周期更新该第一负载列表。该无线接入点将其第一负载列表广播给周围的无线接入点，该周围的无线接入点为参与负载均衡的无线接入点。
该获取模块20设置为获取其他能探测到该站点的无线接入点的无线负载，其他能探测到该站点的无线接入点即为参与负载均衡的无线接入点。其他能探测到该站点的无线接入点的无线负载可以通过该其他能探测到该站点的无线接入点连接的站点个数、该其他能探测到该站点的无线接入点的流量、该其他能探测到该站点的无线接入点的占空比中的一项或多项确定。
当该其他能探测到该站点的无线接入点是双频段无线接入点时，该其他能探测到该站点的无线接入点的无线负载是该其他能探测到该站点的无线接入点在两个频段的负载之和。
可选的，该无线接入点接收该无线接入点周围的各个无线接入点广播的负载列表，该负载列表包括基本服务集标识符、无线负载、探测到的站点，如表二所示，该无线接入点周围的无线接入点AP2广播的负载列表；如表三
所示，该无线接入点周围的无线接入点AP3广播的负载列表；然后该无线接入点的获取模块20设置为从该无线接入点周围的各个无线接入点广播的负载列表中选择探测到的站点包括向该无线接入点发送关联请求的站点的负载列表，并生成一个负载均衡候选列表，该负载均衡候选列表包括发送关联请求的站点、基本服务集标识符、无线负载，如表四所示，该向无线接入点发送关联请求的站点为STA5；该无线接入点的获取模块20设置为再从该负载均衡候选列表中读取其他能扫描该站点的无线接入点的无线负载。
该确定模块30设置为根据该无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定能否允许该站点接入，在一实施例中，仅在该无线接入点的无线负载均小于其他能探测到该站点的无线接入点的无线负载时，认为该无线接入点满足预设接入条件。当该无线接入点满足预设接入条件时，该关联处理模块40设置为允许该站点接入，可选的，该关联处理模块40设置为向该站点发送关联同意响应，该站点接收到关联同意响应后，与该无线接入点建立连接。当该无线接入点不满足预设接入条件，该关联处理模块40设置为拒绝该站点接入，可选的，该关联处理模块40设置为向该站点发送关联拒绝响应，该关联拒绝响应可包括向该站点推荐的无线接入点的基本服务集标识符，该站点接收到该关联拒绝响应后，根据该关联拒绝响应中的基本服务集标识符向对应的无线接入点发送关联请求。
参照图7，图7为本发明第二实施例的无线接入点的结构示意图。
基于上述无线接入点的第一实施例，该无线接入点还包括：第一判断模块50，设置为判断该无线接入点的无线负载是否大于或等于预设负载阀值；
该确定模块30，还设置为在该判断模块的判断结果为该无线接入点的无线负载大于或等于预设负载阀值时，根据该无线接入点的无线负载和其他能探测到该站点的无线接入点的无线负载，确定该无线接入点是否满足预设接入条件。
该预设负载阀值可根据需要预先设置，如当该无线接入点的无线负载由该无线接入点连接的站点个数确定时，该预设负载阀值为整数，如该预设负载阀值为10；如当该无线接入点的无线负载由该无线接入点的占空比确定时，
该预设负载阀值为百分比，如该预设负载阀值为40％。
该第一判断模块50设置为判断该无线接入点的无线负载是否大于或等于预设负载阀值，以确定无线接入点能否同意发送关联请求的站点接入，当该无线接入点的无线负载小于预设负载阀值，则认为该无线接入点还有能力将该站点接入，可直接允许该站点接入，而不需将该站点均衡到邻居的其他无线接入点。
参照图8，图8为本发明实施例无线接入点中确定模块的详细结构示意图，该确定模块30包括：
计算单元31，设置为将该无线接入点的无线负载减去预设负载差值，得到该无线接入点的新的无线负载；
确定单元32，设置为判断该新的无线负载是否小于其他能探测到该站点的无线接入点的无线负载，如果是，则确定该无线接入点满足预设接入条件，如果不是，确定该无线接入点不满足预设接入条件。
该预设负载差值可根据需要预先设置，如当该无线接入点的无线负载由该无线接入点连接的站点个数确定时，该预设负载差值为整数，如该负载差值阀值为5；如当该无线接入点的无线负载由该无线接入点的占空比确定时，该负载差值阀值为百分比，如该负载差值阀值为5％。
该确定单元32设置为将该新的无线负载与其他能探测到该站点的无线接入点的无线负载进行比较，以确定无线接入点能否同意发送关联请求的站点接入，当该新的无线负载小于其他能探测到该站点的无线接入点的无线负载，则认为该无线接入点满足预设接入条件，该无线热点可允许该站点接入；当该新的无线负载大于或等于其他能探测到该站点的无线接入点的无线负载，则认为该无线接入点不满足预设接入条件，该无线热点不可允许该站点接入。
参照图9，图9为本发明第三实施例的无线接入点的结构示意图。
基于上述无线接入点的第一实施例或第二实施例，该无线接入点还包括：
记录模块60，设置为记录该站点发送的关联请求在预设时间内的请求次数；第二判断模块70，设置为判断该请求次数是否小于预设次数阀值；
该获取模块20，还设置为在该请求次数小于预设次数阀值时，获取该无线接入点的无线负载及其他能探测到该站点的无线接入点的无线负载。
该记录模块60设置为在接收模块10接收到该站点的关联请求时，记录该站点发送的关联请求在预设时间内的请求次数，可选的，该记录模块60设置为在接收模块10接收到该站点的关联请求时，将之前记录的该站点的请求次数加1，得到该站点在预设时间内的请求次数。通常的，在达到预设时间后，该记录模块60设置为将记录的该站点的请求次数清零，然后在再次接收到该站点的关联请求时，对该站点的请求次数赋值1，并开始计时，依次类推，在后续接收到该站点的关联请求时，对该站点的请求次数递增；在计时达到预设时间时，将该站点的请求次数清零。
该第二判断模块70设置为将该请求次数与预设次数阀值进行比较，以确定该无线接入点能否允许发送关联请求的站点接入；当该请求次数大于或等于预设次数阀值时，意味着该站点请求加入该无线接入点的次数已经达到最大值，为了避免对该站点的DOS攻击，该无线接入点必须允许该站点的本次关联请求。
参照图10，图10为本发明实施例无线接入点中的关联处理模块的详细结构示意图。
该无线接入点是双频段无线接入点，该站点是双频段站点；
该关联处理模块40包括：
获取单元41，设置为获取该无线接入点在第一频段的无线负载及在第二频段的无线负载；
关联处理单元42，设置为当该无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将该站点接入无线接入点的第二频段；及当该无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将该站点接入无线接入点的第一频段。
在一实施例中，该无线接入点的第一频段为2.4G，该无线接入点的第二频段为5.8G。该获取单元41设置为获取该无线接入点在第一频段的无线负载及在第二频段的无线负载，可选的，该无线接入点在第一频段的无线负载可以通过无线接入点在第一频段连接的站点个数、无线接入点在第一频段的流量、无线接入点在第一频段的占空比中的一项或多项确定，同理，该无线接入点在第二频段的无线负载可以通过无线接入点在第二频段连接的站点个数、无线接入点在第二频段的流量、无线接入点在第二频段的占空比中的一项或多项确定。可选的，该无线接入点在第一频段的无线负载通过无线接入点在第一频段连接的站点个数确定，该无线接入点在第二频段的无线负载通过无线接入点在第二频段连接的站点个数确定。
该关联处理单元42设置为根据该无线接入点在第一频段的无线负载和在第二频段的无线负载，确定将该站点接入该无线接入点的第一频段或第二频段；可选的，当该无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，则说明该无线接入点在第一频段的负载压力较大，则需要将该站点接入第二频段；当该无线接入点在第一频段的无线负载小于在第二频段的无线负载时，则说明该无线接入点在第一频段的负载压力较小，可将该站点接入第一频段。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。
以上仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间
接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。
上述技术方案实现了在当前无线接入点的无线负载较大时，请求接入的站点能够分发到其他无线接入点，从而优化了无线局域网中的负载均衡效果。
Claims (10)
- 一种无线局域网的负载均衡方法，该方法包括：当前无线接入点接收站点发送的关联请求；所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载；所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入。
- 如权利要求1所述的无线局域网的负载均衡方法，该方法还包括：所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入步骤之前，：所述当前无线接入点判断所述当前无线接入点的无线负载是否大于或等于预设负载阀值，如果是，则所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入。
- 如权利要求1所述的无线局域网的负载均衡方法，其中，所述当前无线接入点根据所述当前无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述当前无线接入点是否满足预设接入条件，若满足，则所述当前无线接入点允许所述站点接入，若不满足，所述当前无线接入点拒绝所述站点接入的步骤包括：所述当前无线接入点将所述当前无线接入点的无线负载减去预设负载差值，得到所述当前无线接入点的新的无线负载；所述当前无线接入点判断所述新的无线负载是否小于其他能探测到所述站点的无线接入点的无线负载，如果是，则所述当前无线接入点允许所述站点接入，如果不是，所述当前无线接入点拒绝所述站点接入。
- 如权利要求1至3任一项所述的无线局域网的负载均衡方法，该方法还包括：所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载的步骤之前，所述当前无线接入点记录所述站点发送的关联请求在预设时间内的请求次数；所述当前无线接入点判断所述请求次数是否小于预设次数阀值；若所述请求次数小于预设次数阀值，则所述当前无线接入点获取所述当前无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载。
- 如权利要求1至3任一项所述的无线局域网的负载均衡方法，其中，所述当前无线接入点是双频段无线接入点，所述站点是双频段站点；所述当前无线接入点允许所述站点接入的步骤包括：所述当前无线接入点获取所述当前无线接入点在第一频段的无线负载及在第二频段的无线负载；当所述当前无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将所述站点接入当前无线接入点的第二频段；当所述当前无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将所述站点接入当前无线接入点的第一频段。
- 一种无线接入点，该无线接入点包括：接收模块，设置为接收站点发送的关联请求；获取模块，设置为获取所述无线接入点的无线负载及其他能探测到所述 站点的无线接入点的无线负载；确定模块，设置为根据所述无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述无线接入点是否满足预设接入条件；关联处理模块，设置为在所述无线接入点满足预设接入条件时，允许所述站点接入，及在所述无线接入点不满足预设接入条件时，拒绝所述站点接入。
- 如权利要求6所述的无线接入点，所述无线接入点还包括：第一判断模块，设置为判断所述无线接入点的无线负载是否大于或等于预设负载阀值；所述确定模块，还设置为在所述判断模块的判断结果为所述无线接入点的无线负载大于或等于预设负载阀值时，根据所述无线接入点的无线负载和其他能探测到所述站点的无线接入点的无线负载，确定所述无线接入点是否满足预设接入条件。
- 如权利要求6所述的无线接入点，其中，所述确定模块包括：计算单元，设置为将所述无线接入点的无线负载减去预设负载差值，得到所述无线接入点的新的无线负载；确定单元，设置为判断所述新的无线负载是否小于其他能探测到所述站点的无线接入点的无线负载，如果是，则确定所述无线接入点满足预设接入条件，如果不是，确定所述无线接入点不满足预设接入条件。
- 如权利要求6至8任一项所述的无线接入点，所述无线接入点还包括：记录模块，设置为记录所述站点发送的关联请求在预设时间内的请求次数；第二判断模块，设置为判断所述请求次数是否小于预设次数阀值；所述获取模块，还设置为在所述请求次数小于预设次数阀值时，获取所 述无线接入点的无线负载及其他能探测到所述站点的无线接入点的无线负载。
- 如权利要求6至8任一项所述无线接入点，其中，所述无线接入点是双频段无线接入点，所述站点是双频段站点；所述关联处理模块包括：获取单元，设置为获取所述无线接入点在第一频段的无线负载及在第二频段的无线负载；关联处理单元，设置为当所述无线接入点在第一频段的无线负载大于或等于在第二频段的无线负载时，将所述站点接入无线接入点的第二频段；及当所述无线接入点在第一频段的无线负载小于在第二频段的无线负载时，将所述站点接入无线接入点的第一频段。
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| CN112311689A (zh) * | 2019-07-31 | 2021-02-02 | 上海幻电信息科技有限公司 | 突发流量的分流方法、计算机设备及可读存储介质 |
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| EP4044653A4 (en) * | 2019-10-11 | 2023-06-21 | Beijing Xiaomi Mobile Software Co., Ltd. | BASIC SERVICE PACKAGE COLOR PROCESSING METHOD AND APPARATUS, AND COMPUTER STORAGE MEDIA |
| CN115884237A (zh) * | 2021-09-27 | 2023-03-31 | 华为技术有限公司 | Wlan中的关联方法、ap和sta |
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