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WO2015100562A1 - Procédé, appareil et dispositif permettant d'accéder à un réseau local sans fil - Google Patents

Procédé, appareil et dispositif permettant d'accéder à un réseau local sans fil Download PDF

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Publication number
WO2015100562A1
WO2015100562A1 PCT/CN2013/090966 CN2013090966W WO2015100562A1 WO 2015100562 A1 WO2015100562 A1 WO 2015100562A1 CN 2013090966 W CN2013090966 W CN 2013090966W WO 2015100562 A1 WO2015100562 A1 WO 2015100562A1
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WO
WIPO (PCT)
Prior art keywords
site
destination
request message
enhanced
association
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/090966
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English (en)
Chinese (zh)
Inventor
邢志浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/090966 priority Critical patent/WO2015100562A1/fr
Priority to CN201380078492.XA priority patent/CN105409280B/zh
Publication of WO2015100562A1 publication Critical patent/WO2015100562A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • Wireless local area network access method device and device
  • Embodiments of the present invention relate to a wireless communication technology, and in particular, to a wireless local area network access method, apparatus, and device. Background technique
  • a station accesses an Access Point (AP) device
  • AP Access Point
  • the AP device may be deployed intensively.
  • the site device scans, multiple AP devices are found. Which AP device accesses the site device directly determines the service after the site device accesses the network. Quality, and the overall performance of the network.
  • the access controller (Access Controller, referred to as AC), according to the current network status, uses a specific AP device hiding method, so that some AP devices with heavy current load cannot be accessed by the network to be accessed.
  • the device is discovered during the scanning phase to provide a certain load balancing capability.
  • the method includes the following two methods for hiding an AP device from a pre-entry site device: Method 1: Stop a specific AP device from periodically transmitting a beacon frame so that it cannot be scanned by the site device to achieve a hidden purpose;
  • Method 2 When the site device uses the active scanning mode to broadcast the probe request frame (Probe Request Frame), the AP device that needs to hide itself does not respond even if it receives the search frame.
  • the AP device When the AP device is hidden by the above method, the AP device may be connected to the site device. In addition, the AP device that the site device can access is controlled by the AC. The AC unilaterally decides which AP device to open to the site. Device access. Therefore, in the prior art, it is impossible to ensure that the site device selects an appropriate AP device for access when accessing the wireless local area network. Summary of the invention
  • Embodiments of the present invention provide a wireless local area network access method, device, and device, in an AP device Under dense deployment conditions, it is not possible to select a suitable AP device for access when the site device accesses the network.
  • an embodiment of the present invention provides a method for accessing a wireless local area network, including: a site device sending an enhanced association request message to a first access point AP device, so that the first AP device sends the enhanced association request Sending the message to the access controller, where the enhanced association request message carries at least one of link quality information of the candidate AP device and location information of the site device, where the candidate AP device scans the site device Access to the AP device;
  • the site device receives an enhanced association response message sent by the access controller by using the second AP device, where the enhanced association response message includes a media access control MAC address and a working channel of the destination AP device;
  • the site device completes the network association process according to the MAC address and the working channel of the destination AP device.
  • the enhanced association request packet further carries:
  • the quality of service QoS requirement information and/or redirection range of the site device is used to indicate a range of determining the destination AP device.
  • the method before the site device sends the enhanced association request packet to the first AP device, the method also includes:
  • the site device acquires at least one beacon frame sent by the access controller, and if it is determined that the access controller has an association redirection capability according to the beacon frame, sends an enhanced association request message to the first AP device; Or,
  • the station device obtains the probe response frame sent by the at least one access controller, and if the access controller is determined to have the association redirection capability according to the probe response frame, sending the enhanced association request packet to the first AP. device.
  • the site device sends an enhanced association request packet
  • the first AP device includes:
  • the site device broadcasts the enhanced association request message to the first AP device, so that the first AP device evaluates link quality information of the site device to the first AP device, and Adding the link quality information of the first AP device to the enhanced association request message, and forwarding the information to the access controller; or
  • the site device unicasts the enhanced association request message to the first AP device, so that the first AP device forwards the enhanced association request message to the access controller.
  • the site device is configured according to the destination AP device
  • the MAC address and the working channel complete the network association process, including:
  • the site device determines that its own working channel does not match the working channel of the destination AP device, the site device switches its working channel to the working channel of the destination AP device, and according to the destination AP device
  • the MAC address completes the network association process
  • the site device determines that its own working channel matches the working channel of the destination AP device, the network association process is completed according to the MAC address of the destination AP device.
  • the site device before completing the network association process, according to the MAC address and the working channel of the destination AP device, The method further includes:
  • the site device determines that the beacon frame or the probe response frame sent by the destination AP device is not received, sending a probe request frame to the destination AP device;
  • the site device receives the probe response frame sent by the destination AP device, and obtains parameter information carried in the probe response frame.
  • the embodiment of the present invention provides a wireless local area network access method, including: an access controller receives an enhanced association request message sent by a first access point AP device, where the enhanced association request message carries an alternate AP device. At least one of the link quality information and the location information of the site device, the candidate AP device is an AP device scanned by the site device, and the enhanced association request message is sent by the site device to the first AP Equipment
  • the access controller determines the destination AP device according to the enhanced association request packet; the access controller sends the enhanced association response packet to the site device by using the second AP device, where the enhanced association response packet carries Medium access control MAC of the destination AP device And the working channel, so that the site device completes the network association process according to the enhanced association response message.
  • the enhanced association request packet further carries:
  • the quality of service QoS requirements and/or redirection ranges of the site device being used to indicate a range of determining the destination AP device.
  • the access controller determines the destination AP device, including:
  • the access controller obtains, by the access controller, the association suitability value of each candidate AP device according to the link quality information and the running state of the candidate AP device, and the attribute information and the QoS requirement information of the site device, where
  • the association suitability value refers to the appropriate degree of association between the AP device and the site device; the access controller determines the maximum value of the association suitability values of the candidate AP devices, and selects the candidate AP corresponding to the maximum value.
  • the device acts as the destination AP device.
  • the access controller determines that the AP device with the highest relevance value in each of the candidate AP devices is the destination AP device; or
  • the access controller determines the candidate AP device and the preset distance.
  • the AP device with the highest relevance value in the AP device is the destination AP device.
  • the access controller is configured by using the second AP device
  • the enhanced association response message is sent to the site device, including:
  • the access controller sends the enhanced association response message to the site device by using the first AP device;
  • the access controller sends the enhanced association response message to the site device by using the second AP device, where the second AP
  • the device is any AP device in the enhanced association request message.
  • the embodiment of the present invention provides a wireless local area network access device, including: a first sending module, configured to send an enhanced association request message to a first access point AP device, where the enhanced association request packet carries And selecting at least one of the link quality information of the AP device and the location information of the site device, where the candidate AP device is the AP device that is scanned by the site device, and the first receiving module is configured to receive the access controller.
  • the enhanced association response message sent by the second AP device, where the enhanced association response message includes a media access control MAC address and a working channel of the destination AP device;
  • the first processing module is connected to the first sending module and the first receiving module, and is configured to complete the network association process according to the MAC address and the working channel of the destination AP device.
  • the enhanced association request packet further carries:
  • the quality of service QoS requirement information and/or redirection range of the site device is used to indicate a range of determining the destination AP device.
  • the first receiving module is further configured to obtain a message sent by the at least one access controller Standard frame
  • the first processing module is further configured to: if the access controller is configured to have an association redirection capability according to the beacon frame acquired by the first receiving module, trigger the first sending module to send the enhancement
  • the association request message is sent to the first AP device.
  • the first receiving module is further configured to acquire the at least one access controller Probe response frame;
  • the first processing module is further configured to: if the access controller is configured to have an association redirection capability according to the probe response frame acquired by the first receiving module, trigger the first sending module to send the enhancement
  • the association request message is sent to the first AP device.
  • the first sending module is specifically configured to:
  • the first AP device Broadcasting the enhanced association request message to the first AP device, so that the first AP device evaluates link quality information of the site device to the first AP device, and the first AP device Link quality information is added to the enhanced association request message, and forwarded to the access control Or;
  • the first processing module is specifically configured to:
  • the working channel of the site device is switched to the working channel of the destination AP device, and according to the MAC address of the destination AP device.
  • the address completes the network association process
  • the network association process is completed according to the MAC address of the destination AP device.
  • the first processing module is further configured to:
  • the first device is triggered before the network access process is completed according to the destination MAC address and the working channel of the AP device.
  • the sending module sends a probe request frame to the destination AP device.
  • the first receiving module is further configured to receive a probe response frame sent by the destination AP device, and obtain parameter information carried in the probe response frame.
  • any one of the first to the sixth possible implementation manners of the third aspect in a seventh possible implementation manner of the third aspect, is the same AP device.
  • an embodiment of the present invention provides a wireless local area network access apparatus, including: a second receiving module, configured to receive an enhanced association request message sent by a first access point AP device, where the enhanced association request message carries At least one of the link quality information of the candidate AP device and the location information of the site device, where the candidate AP device is the AP device scanned by the site device, and the enhanced association request message is sent by the site device to the site device.
  • a second receiving module configured to receive an enhanced association request message sent by a first access point AP device, where the enhanced association request message carries At least one of the link quality information of the candidate AP device and the location information of the site device, where the candidate AP device is the AP device scanned by the site device, and the enhanced association request message is sent by the site device to the site device.
  • Said first AP device configured to receive an enhanced association request message sent by a first access point AP device, where the enhanced association request message carries At least one of the link quality information of the candidate AP device and the location information
  • a second processing module configured to determine, according to the enhanced association request message received by the second receiving module, a destination AP device
  • a second sending module configured to send, by the second AP device, the enhanced association response message generated by the second processing module to the site device, where the enhanced association response packet carries media access control of the destination AP device a MAC address and a working channel, so that the site device is increased according to the The strong association response packet completes the network association process.
  • the enhanced association request packet further carries:
  • the quality of service QoS requirements and/or redirection ranges of the site device being used to indicate a range of determining the destination AP device.
  • the second processing module is specifically configured to:
  • association suitability value is Refers to the appropriateness of the association between the AP device and the site device;
  • the maximum value of the associated suitability values of the candidate APs is determined, and the candidate AP device corresponding to the maximum value is used as the destination AP device.
  • the second processing module determines that the AP device with the highest relevance value in each of the candidate AP devices is the destination AP device; or
  • the second processing module determines the candidate AP device and the preset The AP device with the highest affinity value associated with the AP device in the distance is the destination AP device.
  • the second sending module is specifically configured to:
  • an embodiment of the present invention provides a site device, including:
  • a first transmitter configured to send an enhanced association request message to the first access point AP device, so that the first AP device sends the enhanced association request message to the access controller, where the enhanced association request message is sent
  • the link carries the link quality information of the candidate AP device and the location information of the site device.
  • the candidate AP device is an AP device that is scanned by the site device, and the first receiver is configured to receive an enhanced association response message sent by the access controller by using the second AP device, where the enhancement is performed.
  • the association response message includes a media access control MAC address and a working channel of the destination AP device;
  • the first processor is connected to the first transmitter and the first receiver, and is configured to complete the network association process according to the MAC address and the working channel of the destination AP device.
  • the enhanced association request packet further carries:
  • the quality of service QoS requirement information and/or redirection range of the site device is used to indicate a range of determining the destination AP device.
  • the first receiver is further configured to:
  • the first processor is further configured to: if the access controller is configured to have an association redirection capability according to the beacon frame received by the first receiver, trigger the first transmitter to send the enhanced association Requesting a message to the first AP device.
  • the first receiver is further configured to:
  • the first processor is further configured to: if the access controller is configured to have an association redirection capability according to the probe response frame, trigger the first sender to send the enhanced association request message to the first An AP device.
  • the first transmitter is specifically configured to:
  • the first processor is specifically used to:
  • the working channel of the site device does not match the working channel of the destination AP device, the working channel is switched to the working channel of the destination AP device, and the network association is completed according to the MAC address of the destination AP device.
  • the network association process is completed according to the MAC address of the destination AP device.
  • the first processor is further configured to:
  • the first transmitter is triggered to send a probe if it is determined that the beacon frame or the probe response frame sent by the destination AP device is not received before the network association process is completed according to the destination MAC address and the working channel of the AP device. Requesting a frame to the destination AP device;
  • the first receiver is further configured to receive a probe response frame sent by the destination AP device, and obtain parameter information carried in the probe response frame.
  • any one of the first to the sixth possible implementation manners of the fifth aspect in a seventh possible implementation manner of the fifth aspect, is the same AP device.
  • an access controller including:
  • a second receiver configured to receive an enhanced association request message sent by the first access point AP device, where the enhanced association request message carries at least one of link quality information of each candidate AP device and location information of the site device The information that the candidate AP device is the AP device that is scanned by the site device, and the enhanced association request packet is sent by the site device to the first AP device;
  • a second processor configured to determine, according to the enhanced association request message received by the second receiver, a destination AP device
  • a second transmitter configured to send, by the second AP device, the enhanced association response message generated by the second processor to the site device, where the enhanced association response packet carries media access control of the destination AP device The MAC address and the working channel, so that the site device completes the network association process according to the enhanced association response message.
  • the enhanced association request packet further carries: a quality of service QoS requirement and/or a redirection range of the site device, the redirection range being used to indicate a range of determining the destination AP device.
  • the second processor is specifically configured to:
  • association suitability value is Refers to the appropriateness of the association between the AP device and the site device;
  • the maximum value of the associated suitability values of the candidate APs is determined, and the candidate AP device corresponding to the maximum value is used as the destination AP device.
  • a redirection range is each candidate AP device carried in the enhanced association request packet, Determining, by the second processor, that the AP device with the highest relevance value in each of the candidate AP devices is the destination AP device; or
  • the second processor determines the candidate AP device and the preset The AP device with the highest affinity value associated with the AP device in the distance is the destination AP device.
  • the second transmitter is specifically configured to:
  • the redirection information element (AREQ-REDIRECT and ARSP-REDIRECT) is added in the interaction message between the site device and the access controller, and the association redirection mechanism in the network access process of the site device is supported, so that the access controller is enabled.
  • the network status information of the own device and the device side of the site is combined to determine the final associated AP device of the site device, thereby improving the non-excellence caused by the limited access to the network information when the access controller unilaterally determines the AP device, and ensuring the dense deployment of the AP.
  • the site equipment is preferred to enter the network.
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for accessing a wireless local area network according to the present invention
  • FIG. 2 is a diagram showing an example of a format of an association request message in the prior art
  • FIG. 3 is a schematic diagram of an application scenario of a method for accessing a wireless local area network according to an embodiment of the present invention
  • FIG. 4 is a diagram showing an example of a format of an E-ARSP packet in a method for accessing a wireless local area network according to the present invention
  • FIG. 5 is a flowchart of Embodiment 2 of a method for accessing a wireless local area network according to the present invention
  • FIG. 6 is a diagram showing an example of a format of an E-AREQ packet in Embodiment 2 of a method for accessing a wireless local area network according to the present invention
  • Embodiment 7 is a flowchart of Embodiment 3 of a method for accessing a wireless local area network according to the present invention.
  • Embodiment 8 is a schematic structural diagram of Embodiment 1 of a wireless local area network access device according to the present invention.
  • Embodiment 9 is a schematic structural diagram of Embodiment 2 of a wireless local area network access apparatus according to the present invention.
  • Embodiment 1 of a site device according to the present invention.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of an access controller according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the " ⁇ AP+AC” architecture is a common network architecture for the wireless Fidelity (Wi-Fi) network that is centrally managed by the access controller. It is also a network architecture applicable to the embodiments of the present invention.
  • the access controller has the ability to query and collect the real-time running status of the AP device under its jurisdiction, and can obtain real-time network status information such as the load status and access delay of each AP device under its jurisdiction. And accessing the media access control (Media Access Control, MAC for short) management message or even the control packet of the AP device under the control of the controller Processing will be transferred to the access controller and centralized.
  • Media Access Control Media Access Control
  • FIG. 1 is a flowchart of Embodiment 1 of a method for accessing a wireless local area network according to the present invention.
  • the embodiment of the present invention provides a wireless local area network access method, which may be performed by a site device, which may be a terminal device such as a smart phone, a tablet computer or a palmtop computer. As shown in FIG. 1, the method in this embodiment includes:
  • the site device sends an enhanced association request message to the first AP device, so that the first AP device sends the enhanced association request packet to the access controller, where the enhanced association request packet carries the link quality of the candidate AP device.
  • At least one of the information and the location information of the site device, and the candidate AP device is the AP device scanned by the site device.
  • an enhanced association request (Enhanced Association Request, referred to as:
  • the E-AREQ packet carries at least one of link quality information of each candidate AP device and location information of the pre-site site device, that is, link quality information of each candidate AP device and location information of the site device. It can be carried in E-AREQ messages at the same time, or one of them can be carried in the E-AREQ message.
  • an information element Information Element, IE for short
  • the format is shown in Figure 2.
  • the element identifier (Element Identity) is an identifier that uniquely identifies the information element; the length is the actual length of the information element content and the information field; the information is the content of the information element. , this field is a variable.
  • the message contains information elements such as Extended Service Set Identity (SSID) and Supported Rates. .
  • SSID Extended Service Set Identity
  • Supported Rates is used to indicate an extended service set to be associated with the site device
  • the support rate is used to indicate a set of communication rates supported by the site device.
  • an AREQ-REDIRECT information element such as link quality information of each candidate AP device and/or location information of the site device, is added to the association request message.
  • the site devices that are ready to access the network perform the network scanning and authentication process according to the IEEE802.il standard process.
  • the E-AREQ message provided by the present invention is used.
  • the E-AREQ message includes the content included in the associated request message in the prior art. It also includes link quality information of each candidate AP device provided by the site device according to the self-scanning observation result.
  • the link quality evaluation value is a specific information form of the link quality information.
  • the site device obtains the link quality evaluation value of its neighboring AP devices through the network scanning process (active scanning or passive scanning). Specifically, the station device obtains the average arrival signal strength of the packets received from the neighboring AP devices during the scanning process, and uses the average arrival signal strength as the link quality evaluation value of the site device to each AP device.
  • the site device sends the E-AREQ packet to the first AP device, so that the first AP device sends the E-AREQ packet it receives to the access controller.
  • the access controller generates an Enhanced Association Response (E-ARSP) message according to the E-AREQ message, and sends the E-ARSP message to the site device by using the second AP device.
  • E-ARSP Enhanced Association Response
  • the site device 10 is within the working range of the plurality of first AP devices 20, and the plurality of first AP devices 20 are governed by the access controller 30.
  • the site device 10 may use any one of the plurality of first AP devices 20 as an intermediary for forwarding the E-AREQ packet by using a unicast transmission method.
  • the site device 10 may also adopt a broadcast transmission manner.
  • the plurality of first AP devices 20 can be used as an intermediary for forwarding the E-AREQ message.
  • the site device receives an E-ARSP packet sent by the access controller through the second AP device, where the E-ARSP packet includes a MAC address and a working channel of the destination AP device.
  • the E-ARSP message is generated by the access controller according to the E-AREQ message.
  • the second AP device here may be one of the plurality of first AP devices 10 as shown in FIG. 3, or may be other AP devices that are different from the first AP device and are under the jurisdiction of the controller. Make restrictions.
  • the MAC address of the AP device also serves as the identity information (BSSID) of the basic service set (Basic Service Set, BSS) of the AP device.
  • BSS basic Service Set
  • the access controller synthesizes the real-time operation status of each AP device under the jurisdiction, and the decision assistance information contained in the E-AREQ message sent by the associated site device, for example, the link quality information, and the selected destination AP device.
  • the AP device that requests the associated site device is finally connected to the AP device.
  • the destination AP device is the redirected AP device.
  • an AP device is allowed to select one of a plurality of available working channels as its working channel when establishing a network.
  • the site device is only in the same work as the destination AP device. As a channel, you can communicate with each other.
  • the redirection information element (ARSP-REDIRECT) is added to the existing association response (ARSP) packet, that is, the MAC address and the working channel of the destination AP device are used to support the association of the site device in the network access process. Redirection mechanism.
  • the access controller generates an E-ARSP packet according to the E-AREQ packet, including the MAC address and working channel of the destination AP device.
  • the E-ARSP message can adopt the message format as shown in Figure 4.
  • the site device completes the network association process according to the MAC address and the working channel of the destination AP device.
  • the site device extracts the MAC address and the working channel of the destination AP device.
  • the site device compares its own working channel with the working channel of the destination AP device. If the working channels of the two devices are inconsistent, the working channel is switched to the working channel of the destination AP, and then the network association process is completed according to the MAC address of the destination AP. If the working channels of the two are the same, the network association process is completed according to the MAC address of the destination AP.
  • the redirection information element (AREQ-REDIRECT and ARSP-REDIRECT) is added in the interaction message between the site device and the access controller, and the association redirection mechanism in the network access process of the site device is supported, so that the access controller is enabled.
  • the network status information of the own device and the device side of the site is combined to determine the final associated AP device of the site device, thereby improving the non-excellence caused by the limited access to the network information when the access controller unilaterally determines the AP device, and ensuring the dense deployment of the AP.
  • the site equipment is preferred to enter the network.
  • FIG. 5 is a flowchart of Embodiment 2 of a method for accessing a wireless local area network according to the present invention.
  • Embodiments of the present invention provide a wireless local area network access method, which may be performed by an access controller. As shown in FIG. 5, the method in this embodiment includes:
  • the access controller receives the E-AREQ message sent by the first AP device, where the E-AREQ message carries at least one of link quality information of the candidate AP device and location information of the site device, where the candidate AP device is The AP device scanned by the site device, and the E-AREQ packet is sent by the site device to the first AP device.
  • This step is performed in association with S101. After the site device executes S101, the access controller performs this step to complete the interaction of the E-AREQ packet, and details are not described herein.
  • the access controller determines the destination AP device according to the E-AREQ packet.
  • the access controller device synthesizes the real-time operation status (network load condition and access delay, etc.) of the AP devices under the jurisdiction, and the decision assistance information contained in the E-AREQ, for example, the link quality of each candidate AP device.
  • Information the destination AP device is selected as the final access AP device that will enter the site device.
  • the access controller generates an E-ARSP packet according to the destination AP device, and the E-ARSP packet carries the MAC address and working channel of the destination AP device. Specifically, information such as a MAC address and a working channel, which are stored in the controller, has been stored in the controller. Therefore, after the access controller determines the destination AP device, an E-ARSP packet is generated according to the MAC address and the working channel of the destination AP device.
  • the format of the E-ARSP message can be as shown in Figure 4.
  • the access controller sends the E-ARSP packet to the site device by using the second AP device, so that the site device completes the network association process according to the E-ARSP packet.
  • the access controller selects an AP device, that is, the second AP device, for forwarding the E-ARSP packet to the site device that initiates the association request, so that the site device completes the network access process.
  • the second AP device may be the same AP device as the first AP device, or may be different from the first AP device, and is not limited herein.
  • the redirect information element (AREQ-REDIRECT and ARSP-REDIRECT) is added in the interaction message between the site device and the access controller, and the association redirection mechanism in the network access process of the site device is supported, so that the access controller is integrated.
  • the network status information on the device side and the site device side determines the final associated AP device of the site device, thereby improving the non-excellence caused by the limited access to the network information when the access controller unilaterally determines the AP device, and ensuring the dense deployment of the AP.
  • Site equipment is preferred.
  • the E-AREQ packet may further carry one of the following information or any combination thereof: a quality of service (QoS) requirement information and a redirection range of the site device, where the redirection range is used.
  • QoS quality of service
  • the indication determines the scope of the destination AP device.
  • the redirect information element can also be a QoS requirement for the site device.
  • the QoS requirement information of the site device may include requirements for the communication quality parameters such as the communication rate and the transmission delay of the site device after the network access; the location information of the site device is the location information of the site device itself.
  • FIG. 6 is a schematic diagram of a format of an E-AREQ packet in Embodiment 2 of a method for accessing a wireless local area network according to the present invention.
  • the E-AREQ message includes an element identifier, a length, and information, where, the information packet The control (Ctrl) field and the information element field, the information element field includes link quality information of each candidate AP device, QoS requirement information of the site device, and location information of the site device.
  • control field passes the bits of different positions, indicating the following information:
  • the link quality information indication bit of each candidate AP device indicates whether the information element exists by using a value of "0" or "1";
  • the QoS requirement information indication bit of the site device indicates whether the information element exists by a value of "0" or "1";
  • the location information indication bit of the site device indicating whether the information element exists by a value of "0" or "1";
  • the redirection range indicator bit indicates that the access controller selects from the AP devices appearing in the link quality information of each candidate AP device when determining the redirected AP device; the "1" value indicates the access controller
  • the access controller is allowed to perform E-AREQ according to the information in the E-AREQ message (such as the location information of the site device) and the real-time location and running status information of the AP device under its control.
  • the redirected AP is selected from the AP devices under the jurisdiction.
  • the site device cannot discover the sleeping AP device in its vicinity through the scanning process, but the access controller can determine the site according to the location information and local management information of the site device. A sleeping AP device around the device, and optionally activating the sleeping AP device.
  • the redirection range indication value is "1"
  • the access controller determines that the range of the destination AP device is larger, so that the preferred AP device can be selected as the redirecting AP device.
  • the access controller has associated redirection capabilities. Specifically, the access controller generates a beacon frame or a probe response frame for the AP device under the jurisdiction (the two frames are respectively used for passive scanning and active scanning in the process of site device access, and the content is basically the same, and the performance is included. (Capability) field), a reserved bit (bit) in the in-frame Capability field is used as an association redirection capability indicator bit of the access controller.
  • the access controller sends the generated beacon frame or probe response frame to the AP device, and the AP device is responsible for broadcasting (beacon frame) or unicast (sensing response frame) to the scanned site device.
  • the WLAN access method provided by the embodiment of the present invention is described below through the interaction between the site device, the AP device, and the access controller.
  • FIG. 7 is a flowchart of Embodiment 3 of a method for accessing a wireless local area network according to the present invention.
  • the implementation For example, the second AP device and the first AP device are the same AP device, and the destination AP device is different from the first AP device, and the access controller has an association redirection capability.
  • a method for accessing a wireless local area network includes:
  • the site device acquires at least one beacon frame sent by the access controller.
  • the site device obtains at least one beacon frame sent by the access controller by using any AP device. If the site device determines that the access controller has the association redirection capability according to the beacon frame, perform S702; otherwise, the site device presses The network access process specified in the current IEEE802.il standard is networked.
  • the step may further obtain, by the site device, the probe response frame sent by the at least one access controller.
  • the site device actively scans the AP device in the vicinity thereof by using the broadcast probe request frame, and after receiving the probe response frame, the neighboring AP device forwards the probe request frame to the AP device.
  • the access controller processes the access controller to generate a probe response frame corresponding to the probe request frame, and sends the probe response frame to the site device that initiated the request.
  • the site device determines that the access controller has the association redirection capability according to the foregoing probe response frame, execute S702; otherwise, the site device enters the network according to the network access procedure specified in the current IEEE802.i1 standard.
  • the site device sends an E-AREQ packet to the first AP device.
  • the site device that is ready to access the network generates and sends an E-AREQ packet to the first AP device after collecting the beacon frame or the probe response frame sent by the neighboring AP device through the passive scanning or the active scanning mechanism.
  • the timing at which the site device generates the E-AREQ packet may be the following two types:
  • Method 1 The site device completes the scanning and authentication process according to the network access process specified in the current IEEE802.i l standard.
  • the site device can determine the link quality evaluation value of each candidate AP device, generate link quality information of the candidate AP device, and carry it in the AREQ-REDIRECT information element of the E-AREQ message; Determining whether the QoS requirement information of the site device and the location information of the site device are included in the AREQ-REDIRECT information element, thereby facilitating access to the controller to determine the AP device with a lighter load and better quality of the wireless link to the site device. Directed AP device.
  • an AP device can be randomly selected from each candidate AP device as the target receiving and forwarding AP device, that is, the first AP device, and the AP with the best link quality can also be selected.
  • the device receives and forwards the AP device as a target, and does not limit it here. System.
  • Manner 2 After receiving the beacon frame or the probe response frame sent by the AP device, the site device starts the authentication process through the AP device, and sends an E-AREQ packet after the authentication succeeds.
  • the link quality information of each candidate AP device included in the AREQ-REDIRECT information element includes only the link quality information of the candidate AP device, that is, the link quality evaluation value between the site device and the AP device.
  • the site device may determine that the QoS requirement information of the site device and the location information of the site device are included in the AREQ-REDIRECT information element, thereby facilitating access to the controller to determine that the load is lighter and the quality of the wireless link to the device at the website is higher.
  • a good AP device acts as a redirect AP device.
  • the site device can send E-AREQ packets in broadcast or unicast mode.
  • the site device broadcasts an E-AREQ message to the first AP device, so that the first AP device evaluates the link quality information of the site device to the first AP device, and the first AP device The link quality information is added to the E-AREQ packet and forwarded to the access controller.
  • the AP device in the vicinity of the site device and the site device and the working channel acquires the E-AREQ packet.
  • the AP device that receives the E-AREQ packet evaluates the link quality of the site device to its own link, and adds the link quality information to the link quality information of each candidate AP device in the E-AREQ packet, and then
  • the E-AREQ message and the MAC address of the AP device itself are forwarded to the access controller that governs these AP devices.
  • the access controller filters multiple forwarding copies of the same E-AREQ message, where each copy contains different link quality information of each candidate AP device, and merges the link quality information of the site device to each AP device.
  • the link quality information of each candidate AP device after the aggregation is obtained.
  • the site device unicasts the E-AREQ packet to the first AP device, so that the first AP device forwards the E-AREQ packet to the access controller.
  • the AP device of the working channel and the site device acquires the E-AREQ packet.
  • the AP device forwards the received E-AREQ message to the access controller that administers the AP device, and the link quality information of each candidate AP device included in the AREQ-REDIRECT information element in the E-AREQ message only includes Link quality information for an alternate AP device.
  • the AREQ-REDIRECT information element in the E-AREQ message further includes location information of the site device, so as to access the controller device according to its own AP device distribution location information and location information of the site device, and preferably A suitable AP device acts as a redirect AP device.
  • Mode 2 helps to avoid the site device spending too much time in the network scanning phase, which makes the site-based network access process complete quickly.
  • the first AP device sends the E-AREQ packet to the access controller.
  • the access controller determines the destination AP device according to the E-AREQ packet.
  • the destination AP device is determined according to the priorities of the candidate AP devices.
  • the method for obtaining the priority of the candidate AP device may be implemented in multiple manners.
  • the access controller obtains the information according to the link quality information and the running status of the candidate AP device, and the attribute information and QoS requirement information of the site device.
  • the associated AP value of the candidate AP device and determining the maximum value of the associated AP values of the candidate AP devices, and using the candidate AP device corresponding to the maximum value as the destination AP device.
  • the association suitability value refers to the appropriateness of the association between the AP device and the site device, and whether the network quality of the site device to be accessed after accessing the candidate AP device meets the network requirement.
  • the access controller expands the candidate AP device according to the location information of the site device and each AP location that is pre-mastered. .
  • the access controller may map the distance between each candidate AP device and the site device into a link quality by using a preset mapping relationship, for example, establishing a mapping table between the distance and the link quality according to the pre-measured experience value.
  • a preset mapping relationship for example, establishing a mapping table between the distance and the link quality according to the pre-measured experience value.
  • the AP The closer the distance between the device and the site device, the better the link quality.
  • the operating status of the candidate AP device includes information such as the network load of the candidate AP device (BSS Load), the supported rate of the supported AP device, the QoS Capability, and the like. Part or all of the parameters contained in the beacon frame in the IEEE 802.il standard.
  • the attribute information of the site device includes information such as a communication rate set supported by the site device, a QoS capability, and the like, and may specifically include part or all of parameters included in the association request frame in the IEEE802.il standard.
  • the QoS requirement information of the site equipment includes requirements for communication quality such as average communication rate, average and maximum access delay after the network access, and may specifically include part or all of the parameters included in the service flow specification (TSPEC) information element in the IEEE802.il standard. .
  • TSPEC service flow specification
  • the access controller generates an E-ARSP packet according to the destination AP device, where the E-ARSP packet carries the MAC address and the working channel of the destination AP device. This step is the same as S503, and will not be described here.
  • the access controller sends the E-ARSP packet to the first AP device, so that the first AP device sends the E-ARSP packet to the site device.
  • the access controller sends the E-ARSP packet to the first AP device in the following two manners.
  • the first AP device sends an E-ARSP packet to the site device.
  • the E-ARSP packet carries the MAC address and working channel of the destination AP device. After receiving the E-ARSP packet, the site device determines that the beacon frame or the probe response frame sent by the destination AP device is not received, and then performs S708-S710; otherwise, directly executes S710.
  • the site device sends a probe request frame to the destination AP device.
  • This step is used for parameter synchronization between the site device and the destination AP device. For details, see S709.
  • the site device receives the probe response frame sent by the destination AP, and obtains parameter information carried in the probe response frame.
  • the probe response frame is a MAC layer management frame defined in the IEEE 802. il standard.
  • the network device first broadcasts a probe request frame, and the AP device that receives the probe request frame sends the probe device frame to the site.
  • the device feeds back a probe response frame, where the probe response frame includes working parameter information of the network established by the AP device, such as a beacon period, a length of a Collision Free Period, a traffic indication information, and a communication rate set supported by the AP device. Wait. Site devices must obtain this information in advance to ensure that the operations after joining the network comply with the network regulations and do not interfere with the activities of other devices in the network.
  • S708 and S709 are optional steps. If the site device is forwarded in the probe response frame or the beacon frame that is started to be received by the destination AP device, S708 and S709 are not executed, that is, after S707, S710 is directly executed. .
  • the site device completes the network according to the MAC address and the working channel of the destination AP device. The process of association.
  • the site device determines that its own working channel does not match the working channel of the destination AP device, the site device switches its working channel to the working channel of the destination AP device, and completes the network association process according to the MAC address of the destination AP device. If the site device determines that its own working channel matches the working channel of the destination AP device, the network association process is completed according to the MAC address of the destination AP device.
  • the access controller determines that the AP device with the highest relevance value in the candidate AP device is the destination AP device; or The directional range is the candidate AP device carried in the E-AREQ packet and the AP device in the preset distance. The access controller determines that the AP device with the highest relevance value in the AP device and the AP device in the preset distance is Destination AP device.
  • the candidate AP device is the AP included in the link quality information in the E-AREQ message.
  • the access controller sets the link quality information of the AP device (including the dormant AP device) within the preset radius range of the site device according to the location information of the site device in the AREQ-REDIRECT information element, and the candidate AP device.
  • the AP device included in it is used as an alternative AP device.
  • the access controller integrates various information such as the real-time operation status of the network, and the scanning observation result of the site device and the QoS requirement information of the site device, and determines the destination AP device to enable the site device that initiates the association request.
  • the network access is performed to effectively avoid the non-excellence caused by the limited access to the network information when the access controller unilaterally determines the destination AP device, and the optimized selection of the destination AP device is implemented to ensure that the network performance of the site device after accessing the network is superior;
  • the site device scans an AP device, it can initiate an association request process, thereby speeding up the network access process of the site device.
  • the wireless network access method provided by the embodiment of the present invention can enable the AP device supporting the redirected redirection to coexist with the same network as the AP device that does not support the association redirection, so that the network has forward compatibility capability.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a wireless local area network access apparatus according to the present invention.
  • the device can be integrated into a site device, which can be a terminal device such as a smartphone, tablet or palmtop.
  • the device can be implemented by either software or hardware, or a combination of software and hardware.
  • the WLAN access device includes a first sending module 81, a first receiving module 82, and a first processing module 83.
  • the first sending module 81 is configured to send an enhanced association request message to the first AP device, so that the first AP device sends the enhanced association request message to the access controller, where the enhanced association request message is sent.
  • the first receiving module 82 is configured to receive the access control
  • the enhanced association response message sent by the second AP device, the enhanced association response message includes a MAC address and a working channel of the destination AP device, and the first processing module 83 is configured to use the MAC address of the destination AP device. And the working channel, complete the network association process.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the principle and the technical effect are similar, and details are not described herein again.
  • the enhanced association request message may further carry: the site device
  • the redirection range is used to indicate a range of determining the destination AP device.
  • the first receiving module 82 is further configured to obtain a beacon frame that is sent by the at least one access controller.
  • the first processing module 83 is further configured to: if the beacon frame is obtained according to the first receiving module 82. And determining that the access controller has the association redirection capability, and triggering the first sending module 81 to send the enhanced association request message to the first AP device.
  • the first receiving module 82 is further configured to obtain the probe response frame that is sent by the at least one access controller.
  • the first processing module 83 is further configured to: if the probe is obtained according to the first receiving module 82.
  • the response frame determines that the access controller has the association redirection capability, and triggers the first sending module 81 to send the enhanced association request message to the first AP device.
  • the first sending module 81 may be specifically configured to: broadcast the enhanced association request message to the first AP device, so that the first AP device evaluates the site device to the first AP device. Linking the quality information, and adding the link quality information of the first AP device to the enhanced association request message, and forwarding the message to the access controller; or sending the enhanced association request message to the unicast The first AP device, so that the first AP device forwards the enhanced association request message to the access controller.
  • the first processing module 83 may be specifically configured to: if the work of the site device is determined If the channel does not match the working channel of the destination AP device, the working channel of the site device is switched to the working channel of the destination AP device, and the network association process is completed according to the MAC address of the destination AP device; And determining that the working channel of the site device matches the working channel of the destination AP device, and completing the network association process according to the MAC address of the destination AP device.
  • the first processing module 83 is further configured to: before determining that the site device does not receive the destination AP device, before completing the network association process according to the MAC address and the working channel of the destination AP device. Sending the beacon frame or the probe response frame, the first sending module 81 is triggered to send the probe request frame to the destination AP device; and the first receiving module 82 is further configured to receive the probe response frame sent by the destination AP device. Obtaining parameter information carried in the probe response frame.
  • the first AP device and the second AP device may be the same AP device or different AP devices.
  • FIG. 9 is a schematic structural diagram of Embodiment 2 of a wireless local area network access apparatus according to the present invention.
  • the device can be integrated into an access controller, which can be implemented by either software, or hardware, or a combination of software and hardware.
  • the WLAN access device includes a second receiving module 91, a second processing module 92, and a second sending module 93.
  • the second receiving module 91 is configured to receive an enhanced association request message sent by the first AP device, where the enhanced association request message carries at least one of link quality information of each candidate AP device and location information of the site device, where The candidate AP device is an AP device that is scanned by the site device, and the enhanced association request message is sent by the site device to the first AP device.
  • the second processing module 92 is configured to receive according to the second receiving module 91. And the enhanced association request message is used to determine the destination AP device; the second sending module 93 is configured to send, by the second AP device, the enhanced association response message generated by the second processing module 92 to the site device, where the enhancement is performed.
  • the association response message carries the medium access control MAC address and the working channel of the destination AP device, so that the site device completes the network association process according to the enhanced association response message.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 5.
  • the principle and the technical effect are similar, and details are not described herein again.
  • the enhanced association request message may further include: a QoS requirement and/or a redirection range of the site device, where the redirection range is used to indicate a range of the target AP device.
  • the second processing module 92 may be specifically configured to: obtain the candidate AP devices according to link quality information and an operating state of the candidate AP device, and attribute information and QoS requirement information of the site device.
  • the association suitability value, the association suitability value refers to a suitable degree of association between the AP device and the site device; determining a maximum value of the associated suitability values of the candidate AP devices, and corresponding to the maximum value
  • the alternate AP device serves as the destination AP device.
  • the second processing module 92 determines that the AP device with the highest relevance value in each candidate AP device is And the second processing module 92 determines the candidate AP devices, if the redirection range is the candidate AP device that is carried in the enhanced association request packet and the AP device in the preset distance.
  • the AP device with the largest association value in the AP device in the preset distance is the destination AP device.
  • the second sending module 93 may be specifically configured to: if the enhanced association request message is sent by the site device unicast, send the enhanced association response message by using the first AP device. And sending, by the second AP device, the enhanced association response message to the site device, where the enhanced association request message is broadcasted by the site device,
  • the second AP device is any AP device in the enhanced association request message.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a site device according to the present invention.
  • the station device includes a first transmitter 100, a first receiver 200, and a first processor 300 connected to the first transmitter 100 and the first receiver 200.
  • the first transmitter 100 is configured to send an enhanced association request message to the first AP device, so that the first AP device sends the enhanced association request message to the access controller, where the enhanced association request message is sent.
  • the first receiver 200 is configured to receive the The enhanced association response message sent by the controller by the second AP device, where the enhanced association response message includes a MAC address and a working channel of the destination AP device, and the first processor 300 is configured to use the MAC address of the target AP device. And the working channel, complete the network association process.
  • the site device of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the enhanced association request message may further carry: the site device QoS requirement information and/or redirection range, the redirection range is used to indicate a range of determining the destination AP device.
  • the first receiver 200 is further configured to: acquire a beacon frame sent by the at least one access controller; at this time, the first processor 300 may be further configured to be used according to the first receiver 200.
  • the beacon frame is determined to be associated with the redirection capability of the access controller, and the first transmitter 100 is triggered to send the enhanced association request message to the first AP device.
  • the first receiver 200 is further configured to: obtain a probe response frame that is sent by the at least one access controller; at this time, the first processor 300 may be further configured to determine, according to the probe response frame, The access controller has an association redirection capability, and triggers the first transmitter 100 to send an enhanced association request message to the first AP device.
  • the first transmitter 100 may be specifically configured to: broadcast the enhanced association request message to the first AP device, so that the first AP device evaluates the site device to the first AP. Link quality information of the device, and adding link quality information of the first AP device to the enhanced association request message, and forwarding to the access controller; or transmitting the enhanced association request message by unicast The first AP device is sent to the first AP device to forward the enhanced association request message to the access controller.
  • the first processor 300 may be specifically configured to: if it is determined that the working channel of the site device does not match the working channel of the destination AP device, switch the working channel to the working channel of the destination AP device, And completing the network association process according to the MAC address of the destination AP device. If it is determined that the working channel of the site device matches the working channel of the destination AP device, the network association process is completed according to the MAC address of the destination AP device.
  • the first processor 300 may be further configured to: before determining that the network association process is completed according to the MAC address and the working channel of the destination AP device, if it is determined that the beacon frame sent by the destination AP device is not received or The probe response frame triggers the first transmitter 100 to send the probe request frame to the destination AP device; and the first receiver 200 is further configured to receive the probe response frame sent by the destination AP device, and obtain the probe response frame. Parameter information carried in.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of an access controller according to the present invention.
  • the access controller includes a second receiver 400, a second transmitter 500, and a second processor 600 connected to the second receiver 400 and the second transmitter 500.
  • the second receiver 400 is configured to receive an enhanced association request message sent by the first AP device.
  • the enhanced association request message carries at least one of the link quality information of the candidate AP device and the location information of the site device, where the candidate AP device is the AP device scanned by the site device, and the enhanced association request message is sent.
  • the second processor 600 is configured to determine, according to the enhanced association request message received by the second receiver 400, the destination AP device;
  • the second AP device sends the enhanced association response message generated by the second processor 600 to the site device, where the enhanced association response message carries the media access control MAC address and the working channel of the destination AP device, so that the The site device completes the network association process according to the enhanced association response message.
  • the access controller of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the enhanced association request message may further carry: the site device
  • a QoS requirement and/or a redirection range the redirection range being used to indicate a range of determining the destination AP device.
  • the second processor 600 may be specifically configured to: obtain, according to link quality information and an operating state of the candidate AP device, and attribute information and QoS requirement information of the site device, Selecting an association suitability value of the AP device, where the association suitability value refers to a suitable degree of association between the AP device and the site device; determining a maximum value of the associated suitability values of the candidate AP devices, and determining the maximum value
  • the candidate AP device corresponding to the value is used as the destination AP device.
  • the second processor 600 determines that the AP device with the highest relevance value in each candidate AP device is The destination AP device; or, if the redirection range is the candidate AP device carried in the enhanced association request packet and the AP device in the preset distance, the second processor 600 determines the candidate AP device.
  • the AP device with the largest association value in the AP device in the preset distance is the destination AP device.
  • the second transmitter 500 may be specifically configured to: if the enhanced association request message is unicastly sent by the site device, send, by using the first AP device, the enhanced association response message to the Or the site device; or, if the enhanced association request message is broadcasted by the site device, sending, by the second AP device, the enhanced association response packet to the site device, where the second The AP device is any AP device in the enhanced association request message.
  • the receiver (the first receiver and the second receiver)
  • the transmitter and the transmitter may be independent of each other, or may be an integrated structure, that is, a transceiver, and the transceiver integrates the functions and functions of the receiver and the transmitter.
  • the first transceiver includes a first receiver and a first transmitter
  • the second transceiver includes a second receiver and a second transmitter.
  • the redirection information element (AREQ-REDIRECT and ARSP-REDIRECT) is added in the interaction message between the site device and the access controller, and the association redirection mechanism in the network access process of the site device is supported, so that the access controller is enabled.
  • the network status information of the own device and the device side of the site is combined to determine the final associated AP device of the site device, thereby improving the non-excellence caused by the limited access to the network information when the access controller unilaterally determines the AP device, and ensuring the dense deployment of the AP.
  • the site equipment is preferred to enter the network.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

L'invention concerne un procédé, un appareil et un dispositif qui permettent d'accéder à un réseau local sans fil, le procédé comprenant les étapes suivantes : un dispositif de station envoie un paquet E-AREQ à un premier dispositif AP (point d'accès), le paquet E-AREQ contenant au moins une information entre une information de qualité de liaison concernant un dispositif AP en veille et une information de position concernant le dispositif de station; le dispositif de station reçoit un paquet E-ARSP envoyé par un contrôleur d'accès via un second dispositif AP, le paquet E-ARSP comprenant une adresse MAC et un canal actif d'un dispositif AP de destination; et le dispositif de station effectue un processus d'association d'accès au réseau conformément à l'adresse MAC et au canal actif du dispositif AP de destination. La présente invention prend en charge un mécanisme de redirection d'association lors d'un processus d'accès au réseau d'un dispositif de station en ajoutant un élément d'information de redirection à un paquet d'interaction du dispositif de station et d'un contrôleur d'accès, ce qui améliore le caractère non optimal lié à une compréhension limitée des informations de réseau lorsque le contrôleur d'accès détermine de manière unilatérale un dispositif AP, et permet un accès au réseau préférentiel du dispositif de station tout en garantissant un déploiement intensif d'un AP.
PCT/CN2013/090966 2013-12-30 2013-12-30 Procédé, appareil et dispositif permettant d'accéder à un réseau local sans fil Ceased WO2015100562A1 (fr)

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