CN111586725A - Access point updating method and access point - Google Patents
Access point updating method and access point Download PDFInfo
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- CN111586725A CN111586725A CN201910118149.2A CN201910118149A CN111586725A CN 111586725 A CN111586725 A CN 111586725A CN 201910118149 A CN201910118149 A CN 201910118149A CN 111586725 A CN111586725 A CN 111586725A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/04—Arrangements for maintaining operational condition
Abstract
The application discloses an access point updating method and an access point. The method comprises the following steps: when a first access point receives an updating instruction of a controller, the first access point suspends updating; during the suspension of updating, the first access point prevents a station to be associated from associating to the first access point; during a suspended update, the first access point ending association with an associated station; and when the first access point is not associated with any station, the first access point updates according to the updating instruction. A corresponding access point is also disclosed. By adopting the scheme of the application, the access point prevents the station to be associated from being associated to the access point before updating, and ends the association with the associated station, and when the access point is not associated with any station, the updating is carried out, so that the influence on the station service can be reduced, and the communication reliability is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an access point updating method and an access point.
Background
In order to provide more services or make up for the deficiency, an Access Point (AP) in a Wireless Local Area Network (WLAN) is updated. The updated AP needs to be restarted. Restarting an AP causes traffic disruption for Stations (STAs) associated with the AP. To reduce the impact of the update process, it is common to wait for the AP to be updated when idle for the evening. However, updating the AP at night when idle still interrupts the traffic.
Disclosure of Invention
The application provides an access point updating method and an access point, so that the reliability of communication is improved in the process of updating the access point.
In a first aspect, an access point updating method is provided, including: when a first access point receives an updating instruction of a controller, the first access point suspends updating; during the suspension of updating, the first access point prevents a station to be associated from associating to the first access point; during a suspended update, the first access point ending association with an associated station; and when the first access point is not associated with any station, the first access point updates according to the updating instruction.
In the aspect, the access point prevents the station to be associated from being associated to the access point before updating, and ends the association with the associated station, and when the access point is not associated with any station, the updating is performed, so that the influence on the station service can be reduced, and the communication reliability is improved.
With reference to the first aspect, in a first implementation of the first aspect, the first access point preventing a station to be associated from associating with the first access point includes one or more of: the first access point stops sending beacon frames, or Service Set Identifiers (SSIDs) of the beacon frames sent by the first access point are null; the first access point stops replying the detection request frame, or the SSID of a detection response frame replied by the first access point to any detection request frame is null; or the first access point refuses to reply the authentication request frame or the association request frame.
In this implementation, the access point may prevent the station to be associated from associating to the access point in a variety of ways, or a combination thereof, as described above.
With reference to the first aspect or the first implementation of the first aspect, in a second implementation of the first aspect, the ending, by the first access point, association with an associated station includes: and the first access point reduces the upper limit of the transmission power, wherein the reduced upper limit of the transmission power of the first access point is lower than the upper limit of the transmission power of a second access point, and the second access point is a neighbor of the first access point.
In the implementation, the access point reduces the upper limit of the transmission power, so that the transmission power of the access point is lower, and therefore the coverage area of the radio frequency signal is smaller, and when the communication quality of the station and the access point is reduced or the station cannot communicate, the station can automatically roam to the access point with better signals nearby, so that the association between the access point and the associated station is finished.
With reference to the first aspect or the first implementation of the first aspect or the second implementation of the first aspect, in a third implementation of the first aspect, the ending, by the first access point, association with an associated station includes: the first access point sends a basic service set transfer management (BTM) request to the associated station, where the BTM request includes a Basic Service Set Identifier (BSSID) of a third access point, and the third access point is a neighbor of the first access point.
In this implementation, for a station that supports BTM steering, the access point may request to steer the station to a neighboring access point through the BTM, thereby ending the association of the access point with the associated station.
With reference to the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, in a fourth implementation of the first aspect, the ending, by the first access point, association with an associated station includes: the first access point sends a disassociation message to the associated station, wherein the disassociation message comprises a deauthentication frame or a disassociation frame.
In this implementation, the access point may also end association between the access point and the associated station by sending a disassociation message to the associated station so that the associated station no longer associates with the access point.
In a second aspect, an access point is provided, the access point comprising: the updating unit is used for suspending updating when receiving an updating instruction of the controller; a sending unit, configured to prevent, during a suspension of updating, a station to be associated from associating with the first access point; the sending unit is further configured to end association with the associated station during the suspension of updating; and the updating unit is also used for updating according to the updating instruction when the updating unit is not associated with any site.
With reference to the second aspect, in a first implementation of the second aspect, the sending unit is configured to perform one or more of the following operations: stopping sending the beacon frame, or leaving the SSID of the sent beacon frame empty; stopping replying the probe request frame, or leaving the SSID of the probe response frame replied to any probe request frame empty; refusing to reply to the authentication request frame; the reply association request frame is rejected.
With reference to the second aspect or the first implementation of the second aspect, in a second implementation of the second aspect, the sending unit is further configured to reduce an upper limit of transmission power, where the reduced upper limit of transmission power of the first access point is lower than an upper limit of transmission power of a second access point, and the second access point is a neighbor of the first access point.
With reference to the second aspect or the first implementation of the second aspect or the second implementation of the second aspect, in a third implementation of the second aspect, the sending unit is further configured to send a BTM request to the associated station, where the BTM request includes a BSSID of a third access point, and the third access point is a neighbor of the first access point.
With reference to the second aspect, or the first implementation of the second aspect, or the second implementation of the second aspect, or the third implementation of the second aspect, in a fourth implementation of the second aspect, the sending unit is further configured to send a disassociation packet to the associated station, where the disassociation packet includes a deauthentication frame or a disassociation frame.
Based on the same inventive concept, as the principle and the beneficial effects of the access point for solving the problem can be referred to the above possible method embodiments and the beneficial effects, the implementation of the access point can be referred to the implementation of the method, and repeated details are not repeated.
In a third aspect, an access point is provided, which includes: a transceiver, a memory, and a processor; wherein the memory stores program code therein, and the processor is configured to call the program code stored in the memory, and perform the following operations: when the receiver receives an updating instruction of the controller, suspending updating; controlling the transmitter to prevent a station to be associated from associating to the first access point during a suspension update; controlling the transmitter to end association with an associated station during a deferred update; and when the mobile terminal is not associated with any site, updating according to the updating instruction.
In a fourth aspect, there is provided a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the first aspect described above or any implementation thereof.
In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above or any implementation thereof.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic system architecture diagram of a WLAN according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an access point;
fig. 3 is a schematic flow chart of a station accessing a WLAN;
fig. 4 is a flowchart illustrating an access point updating method;
FIG. 5 is a flowchart illustrating open system authentication;
FIG. 6 is a schematic flow chart of shared key authentication;
fig. 7 is a schematic block structure diagram of an access point according to an embodiment of the present disclosure.
Detailed Description
Fig. 1 is a schematic diagram of a system architecture of a WLAN according to an embodiment of the present application, where the system includes a controller 11, a plurality of access points (an access point 21 and an access point 22 are drawn in fig. 1 as an example, and the access point 22 may be one or more), and a plurality of stations (a station 31, a station 32, and a station 33 are drawn in fig. 1 as an example), where the station 31 is associated with the access point 21, the station 32 is associated with the access point 22, and the station 33 is not associated with any access point. Multiple access points are typically wired to the controller 11, and multiple stations typically interact with multiple access points for wireless communication. The controller 11 controls access to a plurality of access points. The controller 11 may be an update server, a WLAN controller (e.g., an Access Controller (AC)), a network management device, a terminal device, or a network device (e.g., a router or switch). The plurality of stations are respectively associated with corresponding access points to access the WLAN.
Fig. 2 is a schematic diagram of an access point. The access point 21 or the access point 22 shown in fig. 1 may adopt the structure shown in fig. 2. As shown in fig. 2, the AP2000 includes a processor 21 and a transceiver 22, and may further include a power supply circuit 23. The processor 21 may in turn comprise a repeater 211 and an interface 212, among other things. The repeater 211 is used to forward messages between wired networks, or between a wired network and a wireless network, or between wireless networks. The processor 21 may be a Central Processing Unit (CPU), a Network Processor (NP), a WLAN device, or a combination thereof. For example, the WLAN device may be a WLAN chip or a WLAN system-on-chip (SOC), WLAN SOC including a logic core for running an operating system in addition to all functions of the WLAN chip. The transceiver 22 may include a wired network transceiver 221 and a wireless network transceiver, or only a wireless network transceiver. The repeater 211 is connected with a wired network transceiver 221 and connected with the interface 212; the interface 212 connects to a wireless network transceiver. The wireless network transceiver includes, among other things, radio frequency circuitry 222 and an antenna 223. There may be one or more rf circuits 222, each of which may be connected to multiple antennas, or one of which may be connected to one antenna. The rf circuit is also called an rf module, and is an electronic device for receiving and transmitting rf signals. In addition, the radio frequency circuit may be integrated into the processor 21. The processor 21 is configured to execute the processing procedure in the embodiment of the present application, and the transceiver 22 is configured to execute the communication procedure with the controller and the station in the embodiment of the present application. The power supply circuit 23 is used to supply power to the access point, for example, the power supply circuit 23 may be powered from an independent ac or dc power source. The power supply circuit 23 may also be integrated with a wired network, for example, using power over Ethernet (PoE), power over data lines (PoDL), or power-line communication (PLC) to take power from the wired network. In addition, the AP may further include a memory, which may be provided separately from the processor or integrated into the processor. Or the memory may be independent of the AP.
The following describes a procedure for a station to access a WLAN, which may be involved in the present application:
fig. 3 is a schematic flow chart of a station accessing a WLAN, and the flow chart is divided into three stages: a scanning phase, a link authentication phase and an association phase.
Wherein, in the scanning stage, the method comprises the following steps:
s301, the access point transmits a beacon frame (beacon) to the station.
Accordingly, the station receives the beacon frame.
A beacon frame is a broadcast frame periodically transmitted by an access point that announces the presence of its network by periodically transmitting beacon frames. The station listens to a beacon frame periodically transmitted by the access point on each channel to acquire the relevant information of the access point. The beacon frame includes information such as SSID, supported rate, etc. The station, upon receiving the beacon frame of the access point, can learn of the presence of the network and adjust the parameters necessary to access the network. This scanning mode is called a passive scanning mode.
S302, the station sends a probe request frame (probe request) to the access point.
S303, after receiving the probe request frame, the access point sends a probe response frame (proberesponse) to the station.
During the operation of the station, the station periodically searches for the surrounding wireless networks, i.e., actively scans for the surrounding wireless networks. According to whether the probe request frame carries an SSID, active scanning can be divided into two types:
a method for actively scanning includes sending out detection request frame by station in each channel in sequence, searching for access point with SSID same to station, replying detection response frame only after access point capable of providing wireless service of assigned SSID receives said detection request frame.
Another active scanning method is that a station periodically sends a probe request frame in its supported channel list to scan the wireless network, i.e. sends a broadcast-type probe request frame. The probe request frame does not carry the SSID. When receiving the probe request frame, the access point responds to the probe response frame to announce the wireless network information that can be provided, and the SSID is carried in the probe response frame. The method is suitable for stations to know whether available wireless services exist through active scanning.
Wherein, in the link authentication phase, the following steps are included:
s304, the station sends an authentication request frame (authentication request) to the access point.
S305, after receiving the authentication request frame, the access point transmits an authentication response frame (authentication response) to the station.
In order to ensure the security of the wireless link, the access point needs to complete the authentication of the station during the access process. Two authentication mechanisms are currently defined: open system authentication and shared key authentication.
Fig. 5 is a schematic flowchart of open system authentication. The open system authentication is not authenticated, and any site can be successfully authenticated. Specifically, the procedure includes two steps, that the station sends an authentication request frame to the access point and the access point sends an authentication response frame to the station. The authentication request frame and the authentication response frame do not carry other authentication parameters.
Fig. 6 is a schematic flowchart of shared key authentication. And (3) shared key authentication, namely, the station and the access point are configured with the same shared key in advance, the access point verifies whether the key configurations at the two sides are the same in the link authentication process, if so, the authentication is successful, and otherwise, the authentication fails. Typically, a shared key authentication mechanism is employed. Specifically, the procedure includes that the station sends an authentication request frame to the access point, the access point sends a first authentication response frame (carrying a challenge word) to the station, the station sends a second authentication response frame (carrying a decrypted challenge word) to the access point, and the access point sends a third authentication response frame (indicating that authentication is successful) to the station.
Wherein, in the association stage, the following steps are included:
s306, the station sends an association request frame (association request) to the access point.
S307, after receiving the association request frame, the access point sends an association response frame (association response) to the station.
The station association procedure is essentially a procedure of link reset negotiation. After the link authentication is completed, the station will continue to initiate a link service negotiation, and the specific negotiation is implemented by an association message, that is, the two steps of S306 and S307 are included.
The embodiment of the application provides an access point updating method and an access point, wherein before updating, the access point prevents a station to be associated from being associated with the access point, and ends the association with the associated station, and when the access point is not associated with any station, the updating is carried out, so that the service of the station is not influenced by the updating, and the reliability of communication is improved.
In the present application, the access point 21 is an access point to be updated, and the access point 22 is generally an access point that is not updated simultaneously with the access point 21. The controller 11 sends an update instruction to the access point 21. The update program to be updated may be sent to the access point 21 by the controller 11, or may be sent to the access point 21 by another device. The update program to be updated may be sent to the access point 21 before or after the update instruction, or may be carried by the update instruction. However, in order for this update to cause an impact on the traffic of the STA, the access point 21 suspends the update. During the suspension of updating, the access point 21 prevents the station to be associated from associating with the access point 21 and ends the association with the associated station, and when the access point 21 does not associate with any STA, the access point 21 may update according to the update instruction, and update the software or firmware of the access point 21 by using the update program.
The embodiments of the present application will be described in detail below with reference to the drawings.
The terms "system" and "network" in embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
Fig. 4 is a flowchart illustrating an access point updating method according to an embodiment of the present application, which can be applied to the WLAN system shown in fig. 1. Wherein:
s401, when the first access point receives an updating instruction of the controller, the first access point suspends updating.
The controller updates the first access point and sends an updating instruction to the first access point. The update program may include the update instruction, and the controller issues the update program through the update instruction; the controller may also send the update program to the first access point separately; or the first access point may obtain the update from another server or device. The first access point receives the update instruction.
The controller may send the update instruction to each access point to be updated, or may send the update instruction to a plurality of access points simultaneously. If the controller sends the update command to a plurality of access points simultaneously, further, the controller can send the update command to non-adjacent access points each time, so as to reduce the possibility that the station does not have any associable access points during the update.
When the first access point receives the updating instruction, some stations may be associated with the first access point, and WLAN communication is carried out through the first access point; there may also be some stations to associate with the first access point. For the associated sites and the sites to be associated, if the relationship with the sites is not properly processed, the service of the sites is interrupted, and the reliability of communication cannot be ensured. Therefore, when the first access point receives the update instruction from the controller, the first access point suspends the update and handles the relationship with the stations.
S402, during the period of suspending updating, the first access point prevents the station to be associated from associating to the first access point.
The station to be associated refers to a station that has not accessed any access point, but accesses a certain access point to access the WLAN for service transmission, for example, the station 33 in the WLAN system shown in fig. 1; or may be a station that has associated with other access points but wants to roam from other access points to an access point, such as station 32 in the WLAN system shown in fig. 1 (station 32 is currently associated with a particular access point 22 but wants to roam to other access points). In the embodiment of the present application, since the first access point is to be updated, during the period when the first access point suspends updating, the stations to be associated are prevented from associating with the first access point.
According to the procedure of the station accessing the WLAN shown in fig. 3, the first access point prevents the station to be associated from associating with the first access point, and there may be several implementations:
in one implementation, the first access point stops transmitting beacon frames. According to the passive scanning process, the station to be associated cannot listen to the beacon frame and cannot acquire the related information of the first access point, so that the station to be associated cannot know the existence of the first access point, and the station to be associated can be prevented from being associated with the first access point.
In another implementation, the SSID of the beacon frame transmitted by the first access point is null. According to the passive scanning process, the SSID of the first access point is not stored in the station to be associated before, and the SSID carried in the beacon frame is empty, and the SSID information of the first access point is hidden, so that the station to be associated cannot acquire the related information of the first access point, and does not know the existence of the first access point, thereby preventing the station to be associated from being associated with the first access point.
In yet another implementation, the first access point stops replying to probe request frames. According to the active scanning process, the first access point stops replying the probe request frame, that is, the probe response frame is not sent to the station to be associated, the scanning process cannot be completed, and the station to be associated cannot be associated with the first access point, so that the station to be associated can be prevented from being associated with the first access point.
In yet another implementation, the SSID of a probe response frame replied by the first access point to any probe request frame is null. According to the active scanning process, the SSID of the first access point is not stored before the station to be associated, the SSID is not carried in the probe request frame, the probe response frame is replied by the first access point to the probe request frame sent by the station to be associated in multiple channels, and the SSID carried in the probe response frame is empty, the SSID information of the first access point is hidden, the scanning process cannot be completed, the station to be associated cannot be associated with the first access point, and therefore the station to be associated can be prevented from being associated with the first access point.
In yet another implementation, the first access point denies replying to the authentication request frame. According to the authentication process, the station to be associated sends an authentication request frame to the first access point, the first access point refuses to send an authentication response frame to the station to be associated, the authentication process cannot be completed, and the station to be associated cannot be associated with the first access point, so that the station to be associated, which is previously connected with the first access point, can be prevented from being associated with the first access point. Wherein the refusing to reply to the authentication request frame comprises: not replying or stopping replying the authentication request frame; or reply to the authentication request frame, but reply to the authentication response frame with a status code (status) of rejected or other parameter value indicating rejected.
In yet another implementation, the first access point denies replying to an association request frame. According to the association process, the station to be associated sends an association request frame to the first access point, the first access point refuses to send an association response frame to the station to be associated, the association process cannot be completed, and the station to be associated cannot be associated with the first access point, so that the station to be associated, which is previously connected with the first access point, can be prevented from being associated with the first access point. Wherein rejecting the reply association request frame comprises: not replying or stopping replying the association request frame; or reply to the association request frame, but reply to the association response frame with a status code of reject or other parameter value indicating reject.
The first access point may choose to prevent the implementation of association with the station to be associated.
S403, during the period of suspending updating, the first access point finishes associating with the associated station.
An associated station refers to a station that has associated with the first access point during the deferred update, such as station 31 in the WLAN system shown in fig. 1. The first access point may end association with the associated station to avoid service interruption for the associated station to update.
The first access point ends the association with the associated station, and there may be several implementations:
in one implementation, the first access point reduces an upper transmit power limit, where the reduced upper transmit power limit of the first access point is lower than an upper transmit power limit of a second access point, the second access point being a neighbor of the first access point. This is because the transmission power of the access point determines the coverage of its radio frequency signal, and the larger the transmission power of the access point is, the larger the coverage is, the more likely the station is to associate with the access point; the smaller the transmit power of the access point, the smaller its coverage area, and the better the station can roam to a nearby access point. Therefore, the station can be guided to actively roam to the access point which is not updated by reducing the upper limit of the transmitting power of the first access point and increasing the transmitting power of the surrounding neighbor access point (second access point). The number of neighbor access points may be one or more. Specifically, the first access point reduces the upper limit of the transmission power, so that the power transmitted by the first access point is smaller than the upper limit, the associated station disconnects from the first access point when sensing that the signal of the first access point is not good, and actively roams to the neighbor access point when sensing that the signal of the neighbor access point is good.
In another implementation, the first access point sends a BTM request to the associated station, the BTM request including a BSSID of a third access point that is a neighbor of the first access point. Where the associated stations may be stations that are not actively roaming to a neighbor access point.
For a station supporting BTM function steering, it can be steered to a neighbor access point through a BTM message. The BTM functionality allows the control layer of the network to influence the roaming behavior of a station by providing the station with load information of nearby access points.
Specifically, for a station supporting the BTM function, an associated station can be caused to roam to a third access point by filling the BSSID of the third access point (a neighbor access point that does not perform updating) in a BSS transition candidate list (BSStransition candidate list) requested by the BTM. Further, the associated station may reply with a BTM response to the first access point. Optionally, the first access point may also confirm whether the neighbor access point is in the update process through the controller or to the neighbor access point, and if the neighbor access point is in the update process, the third access point does not include the neighbor access point which is being updated or to be updated. If the controller adopts a scheme of not sending the updating instruction to the neighbor access point, the step of confirming whether the neighbor access point is in the updating process or not can not be executed.
In yet another implementation, the first access point sends a disassociation message to the associated station, the disassociation message including a deauthentication frame or a disassociation frame. For an associated station which does not support BTM migration, the first access point may send a disassociation message to the associated station, that is, send a de-authentication frame or a disassociation frame to the associated station, and according to the authentication and association procedure, the station ends association with the first access point after receiving the de-authentication frame or the disassociation frame.
The first access point may choose to either end the implementation of association with the associated station.
Steps S402 and S403 are generally steps performed in parallel, i.e., the first access point may end association with the associated station while preventing the station to be associated from associating to the first access point.
S404, when the first access point is not associated with any station, the first access point updates according to the updating instruction.
After the first access point prevents the station to be associated from associating with the first access point, and after the association with the associated station is finished, that is, the first access point does not associate with any station, the first access point may perform updating according to the updating instruction. Specifically, the software or firmware of the first access point is updated according to the update instruction, for example, the software or firmware of the first access point is modified or changed by using the received update program. After the update is completed, the first access point may be restarted and reported to the controller.
It is to be appreciated that the first access point can continue to block the station to be associated from associating with the first access point during the update, and the first access point ceases to block the station to be associated from associating with the first access point after the update is complete.
Further, the controller may update a next access point, the operation of which is the same as the operation of the first access point. If the number of the access points to be updated is large, a plurality of access points can be simultaneously updated in batches in different areas, namely, the operations are simultaneously carried out on the plurality of access points.
According to the access point updating method provided by the embodiment of the application, before the access point is updated, the station to be associated is prevented from being associated to the access point, the association with the associated station is finished, and when the access point is not associated with any station, the updating is carried out again, so that the service of the station is not influenced by the updating, and the reliability of communication is improved.
Based on the same concept of the access point updating method in the foregoing embodiment, as shown in fig. 7, the embodiment of the present application further provides an access point 7000, where the access point 7000 can be applied to the access point updating method shown in fig. 4. The access point 7000 can be the access point 21 shown in fig. 1, or can be a component (e.g. a chip) applied to the access point 21. The access point 7000 includes: an updating unit 71 and a transmitting unit 72. Wherein:
the access point 7000 comprises:
an update unit 71 configured to suspend updating when an update instruction of the controller is received;
a sending unit 72, configured to, during the suspension of updating, prevent the station to be associated from associating with the first access point;
the sending unit 72 is further configured to end association with the associated station during the suspension of updating;
the updating unit 71 is further configured to perform updating according to the updating instruction when the station is not associated with any station.
In one implementation, the sending unit 72 is configured to perform one or more of the following operations:
stopping sending the beacon frame, or leaving the SSID of the sent beacon frame empty;
stopping replying the probe request frame, or leaving the SSID of the probe response frame replied to any probe request frame empty;
refusing to reply to the authentication request frame;
the reply association request frame is rejected.
In another implementation, the sending unit 72 is further configured to reduce an upper transmit power limit, where the reduced upper transmit power limit of the first access point is lower than an upper transmit power limit of a second access point, and the second access point is a neighbor of the first access point.
In yet another implementation, the sending unit 72 is further configured to send a BTM request to the associated station, where the BTM request includes a BSSID of a third access point, and the third access point is a neighbor of the first access point.
In yet another implementation, the sending unit 72 is further configured to send a disassociation message to the associated station, where the disassociation message includes a deauthentication frame or a disassociation frame.
More detailed descriptions about the updating unit 71 and the sending unit 72 can be obtained by directly referring to the related descriptions in the embodiment of the method shown in fig. 4, which are not repeated herein.
According to the access point provided by the embodiment of the application, before the access point is updated, the station to be associated is prevented from being associated to the access point, the association with the associated station is finished, and when the access point is not associated with any station, the update is performed, so that the service of any station is not influenced by the update, and the reliability of communication is improved.
The embodiment of the application also provides an access point, and the access point is used for executing the access point updating method. Part or all of the above access point updating method may be implemented by hardware, or may be implemented by software or firmware.
Alternatively, the access point may be a chip or an integrated circuit when embodied.
Alternatively, when part or all of the access point updating method of the foregoing embodiments is implemented by software or firmware, the method may be implemented by the access point 2000 shown in fig. 2, and specifically, the processor 21 in the access point 2000 shown in fig. 2 is configured to execute steps S401 and S404 shown in fig. 4; the transceiver 22 is configured to perform steps S402 and S404 shown in fig. 4.
Alternatively, the program of the above-described access point updating method may be stored in a memory. The memory may be a physically separate unit or may be integrated with the processor 21. The memory may also be used to store data.
Alternatively, when part or all of the access point updating method of the above embodiments is implemented by software, the access point may only include a processor. The memory for storing the program is located outside the access point, and the processor is connected to the memory through a circuit or a wire for reading and executing the program stored in the memory.
The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a WLAN device.
The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile) such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
According to the access point provided by the embodiment of the application, before the access point is updated, the station to be associated is prevented from being associated to the access point, the association with the associated station is finished, and when the access point is not associated with any station, the update is performed, so that the service of the station is not influenced by the update, and the reliability of communication is improved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the unit is only one logical function division, and other division may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software or firmware, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wire (e.g., coaxial cable, fiber optics, twisted pair) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any medium that can be accessed by a computer or a data storage device including one or more integrated media, servers, data centers, and the like. The medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).
Claims (15)
1. An access point update method, comprising:
when a first access point receives an updating instruction of a controller, the first access point suspends updating;
during the suspension of updating, the first access point prevents a station to be associated from associating to the first access point;
during a suspended update, the first access point ending association with an associated station;
and when the first access point is not associated with any station, the first access point updates according to the updating instruction.
2. The method of claim 1, wherein the first access point prevents the station to be associated from associating with the first access point, and wherein one or more of:
the first access point stops sending beacon frames, or Service Set Identifiers (SSIDs) of the beacon frames sent by the first access point are null;
the first access point stops replying the detection request frame, or the SSID of a detection response frame replied by the first access point to any detection request frame is null;
the first access point refuses to reply the authentication request frame;
the first access point refuses to reply to the association request frame.
3. The method of claim 1 or 2, wherein the first access point ending association with the associated station comprises:
and the first access point reduces the upper limit of the transmission power, wherein the reduced upper limit of the transmission power of the first access point is lower than the upper limit of the transmission power of a second access point, and the second access point is a neighbor of the first access point.
4. A method according to any of claims 1 to 3, wherein the first access point ending association with the associated station comprises:
the first access point sends a basic service set transition management (BTM) request to the associated station, wherein the BTM request comprises a Basic Service Set Identification (BSSID) of a third access point, and the third access point is a neighbor of the first access point.
5. The method of any one of claims 1 to 4, wherein the first access point ending association with the associated station comprises:
the first access point sends a disassociation message to the associated station, wherein the disassociation message comprises a deauthentication frame or a disassociation frame.
6. An access point, comprising:
the updating unit is used for suspending updating when receiving an updating instruction of the controller;
a sending unit, configured to prevent, during a suspension of updating, a station to be associated from associating with the first access point;
the sending unit is further configured to end association with the associated station during the suspension of updating;
and the updating unit is also used for updating according to the updating instruction when the updating unit is not associated with any site.
7. The access point of claim 6, wherein the sending unit is configured to perform one or more of the following operations:
stopping sending the beacon frame, or the service set identifier SSID of the sent beacon frame is null;
stopping replying the probe request frame, or leaving the SSID of the probe response frame replied to any probe request frame empty;
refusing to reply to the authentication request frame;
the reply association request frame is rejected.
8. The access point of claim 6 or 7, wherein the sending unit is further configured to reduce an upper transmit power limit, wherein the reduced upper transmit power limit of the first access point is lower than an upper transmit power limit of a second access point, and the second access point is a neighbor of the first access point.
9. The access point according to any of claims 6 to 8, wherein the sending unit is further configured to send a basic service set transition management, BTM, request to the associated station, the BTM request including a basic service set identification, BSSID, of a third access point, the third access point being a neighbor of the first access point.
10. The access point according to any of claims 6 to 9, wherein the sending unit is further configured to send a disassociation message to the associated station, and the disassociation message includes a deauthentication frame or a disassociation frame.
11. An access point, comprising: a receiver, a transmitter, a memory, and a processor; wherein the memory stores program code therein, and the processor is configured to call the program code stored in the memory, and perform the following operations:
when the receiver receives an updating instruction of the controller, suspending updating;
controlling the transmitter to prevent a station to be associated from associating to the first access point during a suspension update;
controlling the transmitter to end association with an associated station during a deferred update;
and when the station is not associated with any station, updating according to the updating instruction.
12. The access point of claim 11, wherein the processor performs the operations of controlling the transmitter to prevent a station to associate with the first access point comprises one or more of:
controlling the transmitter to stop sending beacon frames, or controlling Service Set Identifiers (SSIDs) of the beacon frames sent by the transmitter to be null;
controlling the transmitter to stop replying the probe request frame, or controlling the SSID of a probe response frame replied by the transmitter to any probe request frame to be null;
controlling the transmitter to refuse to reply to an authentication request frame;
controlling the transmitter to refuse to reply to an association request frame.
13. The access point of claim 11 or 12, wherein the processor performs the operation of controlling the transmitter to end association with an associated station, comprising:
and controlling the transmitter to reduce the upper limit of the transmission power, wherein the reduced upper limit of the transmission power of the first access point is lower than the upper limit of the transmission power of a second access point, and the second access point is a neighbor of the first access point.
14. An access point as claimed in any one of claims 11 to 13, wherein the processor performs the operation of controlling the transmitter to end association with an associated station, comprising:
controlling the transmitter to send a basic service set transition management, BTM, request to the associated station, the BTM request including a basic service set identification, BSSID, of a third access point, the third access point being a neighbor of the first access point.
15. An access point as claimed in any one of claims 11 to 14, wherein the processor performs the operation of controlling the transmitter to end association with an associated station, comprising:
controlling the transmitter to send a disassociation message to the associated station, the disassociation message comprising a deauthentication frame or a disassociation frame.
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| WO2023000225A1 (en) * | 2021-07-21 | 2023-01-26 | Oppo广东移动通信有限公司 | Wireless communication method, station device, and access point device |
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