WO2016149911A1 - 自动切换接入点的方法和无线路由设备 - Google Patents

自动切换接入点的方法和无线路由设备 Download PDF

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Publication number
WO2016149911A1
WO2016149911A1 PCT/CN2015/074969 CN2015074969W WO2016149911A1 WO 2016149911 A1 WO2016149911 A1 WO 2016149911A1 CN 2015074969 W CN2015074969 W CN 2015074969W WO 2016149911 A1 WO2016149911 A1 WO 2016149911A1
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WO
WIPO (PCT)
Prior art keywords
access point
point device
wireless routing
terminal
routing device
Prior art date
Application number
PCT/CN2015/074969
Other languages
English (en)
French (fr)
Inventor
余尚春
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP15885850.6A priority Critical patent/EP3264828B1/en
Priority to PCT/CN2015/074969 priority patent/WO2016149911A1/zh
Priority to US15/560,860 priority patent/US10390278B2/en
Priority to JP2017549810A priority patent/JP6533591B2/ja
Priority to CN201580077669.3A priority patent/CN107409350B/zh
Publication of WO2016149911A1 publication Critical patent/WO2016149911A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • 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

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method for automatically switching an access point and a wireless routing device.
  • Wireless Local Area Network is a network that communicates over a wireless medium. It is a combination of a computer network and a communication technology.
  • a wireless local area network usually includes an access point (AP) and a station (Station).
  • AP access point
  • Station station
  • a device such as STA is referred to as a STA or an access device.
  • the access point can be connected to a wireless network or a wired network.
  • the access point can also be called a hotspot.
  • the hotspots that are applied to the WLAN coverage in the home are called home hotspots, and the home hotspots (including the client devices with the WiFi AP function) are generally uplinked through the Ethernet, and the interconnection of the Internet is fixed in the home. It can't be carried with you.
  • another mobile hotspot is mainly used for outdoor wireless LAN coverage, such as mobile WiFi, and mobile hotspots can be carried around, through the 4th Generation mobile communication technology (4G)/
  • the three-generation mobile communication technology (3rd-Generation, 3G for short) and the second generation of mobile communication technology (2G) can perform high-speed data services.
  • More and more users' terminals can access the Internet through the above two access points to realize services such as web browsing, data transmission or voice call.
  • the Internet can be accessed through the mobile hotspot, and when the terminal is located in the wireless local area network coverage in the home, the Internet can be accessed through the home hotspot.
  • the terminal device enters the coverage of the wireless local area network in the home from the coverage of the wireless local area network in the home, the terminal is still connected to the mobile hotspot outside the coverage of the wireless local area network in the home, and cannot automatically switch to the home hotspot.
  • Embodiments of the present invention provide a method for automatically switching an access point and a wireless routing device, so as to implement automatic switching of an access point by a terminal.
  • the embodiment of the present invention provides a method for automatically switching an access point.
  • the method includes:
  • the wireless routing device determines whether there is an access point device allowed to access within a wireless connection range of the wireless routing device
  • the wireless routing device sends a wireless connection request message to the access point device, and establishes a network connection with the access point device;
  • the wireless routing device disconnects from the network of the terminal to trigger the terminal to connect to the access point device, so that the terminal accesses the Internet through the access point device.
  • the determining, by the wireless routing device, the access point device that is allowed to access in the wireless connection range of the wireless routing device specifically includes:
  • the wireless routing device works in an access point AP function and a station STA function mode, and performs periodic scanning on the access point device by using the STA to obtain a service set identifier of the scanned access point device, and the connection is performed.
  • the service set identifier of the ingress device is compared with the service set identifier set of the access point device that is stored by itself, and it is determined whether the access point device is an access point device that is allowed to access;
  • the access point device is an access point device that is allowed to access
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the wireless routing device further includes: before the access point device sends a wireless connection request message, and the network connection is established with the access point device, the method further includes:
  • the wireless routing device sends a dynamic host configuration protocol to the access point device.
  • the message is that the DHCP discovery message carries a first DHCP option field.
  • the wireless routing device compares the first DHCP option field with the second DHCP option field, and if the first DHCP option field is consistent with the second DHCP option field, with the access point device establish connection.
  • the wireless routing device disconnects from the terminal Network connection, including:
  • the wireless routing device stops performing wireless communication interaction with the terminal.
  • the wireless routing device sends a de-association message to the terminal and hides its own service set identifier.
  • the wireless routing device disconnects from the terminal After connecting, it also includes:
  • the wireless routing device disconnects from the wireless wide area network.
  • the wireless routing device is disconnected from the terminal After the network connection, it also includes:
  • the wireless routing device is switched from an access point AP function and a station STA function mode to a station STA function mode;
  • the wireless routing device continuously monitors the access point device.
  • the wireless routing device continues to the access point device Monitoring, including:
  • the wireless routing device If the wireless routing device detects that it is disconnected from the access point device, the wireless routing device re-operates in the access point AP function and the station STA function mode, and re-establishes a network with the terminal. connection.
  • an embodiment of the present invention provides a wireless routing device, where the wireless routing device In the case of establishing a network connection with the terminal, including:
  • a processing module configured to determine whether there is an access point device allowed to access within a wireless connection range of the wireless routing device
  • a sending module configured to send a wireless connection request message to the access point device if the access point device exists, and establish a network connection with the access point device;
  • the processing module is further configured to disconnect a network connection with the terminal, to trigger the terminal to connect to the access point device, so that the terminal accesses the Internet through the access point device.
  • the processing module is configured to determine whether an access point device that is allowed to access exists in a wireless connection range of the wireless routing device, specifically including The processing module works in the access point AP function and the station STA function mode, and uses the STA to periodically scan the access point device to obtain the service set identifier of the scanned access point device, and the The service set identifier of the ingress device is compared with the service set identifier set of the access point device that is stored by itself, and it is determined whether the access point device is an access point device that is allowed to access;
  • the access point device is an access point device that is allowed to access
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the sending module is further configured to: establish a network with the access point device Before the connection, sending a dynamic host configuration protocol DHCP discovery message to the access point device, where the DHCP discovery message carries a first DHCP option field;
  • the wireless routing device further includes a receiving module, configured to receive a DHCP offer message returned by the access point device, where the DHCP offer message carries a second DHCP option field;
  • the processing module is further configured to compare the first DHCP option field with the second DHCP option field, and if the first DHCP option field is consistent with the second DHCP option field, The in-point device establishes a connection.
  • the processing module is configured to disconnect the terminal Network connection, including:
  • the processing module is configured to disconnect the terminal After the network connection, the processing module is further configured to:
  • the processing module is further configured to: After the network connection of the terminal, the access point AP function and the station STA function mode are switched to the station STA function mode;
  • the access point device In the STA mode of the station, the access point device is continuously monitored.
  • the processing module is configured to perform, in the station STA function mode, the access point device Continuous monitoring, including: the processing module, if it detects that it is disconnected from the access point device, re-operates in the access point AP function and the station STA function mode, and re-establishes a network with the terminal connection.
  • the embodiment of the present invention provides a wireless routing device, where the wireless routing device establishes a network connection with the terminal, including:
  • a processor configured to determine whether there is an access point device allowed to access within a wireless connection range of the wireless routing device
  • a transmitter if the access point device exists, sending a wireless connection request message to the access point device, and establishing a network connection with the access point device;
  • the processor is further configured to disconnect a network connection with the terminal, to trigger the terminal to connect to the access point device, so that the terminal accesses the Internet through the access point device.
  • the determining, by the processor, the access point device that is allowed to access in the wireless connection range of the wireless routing device specifically includes: In the access point AP function and the station STA function mode, the processor periodically scans the access point device by using the STA, and obtains a service set identifier of the scanned access point device, where the access point is obtained. The service set identifier of the device is compared with the service set identifier set of the access point device that is stored by itself, and it is determined whether the access point device is an access that is allowed to access.
  • the access point device is an access point device that is allowed to access
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the wireless routing device further includes a receiver, the wireless routing device and the Before the ingress device establishes the network connection, the sender sends a dynamic host configuration protocol DHCP discovery message to the access point device, where the DHCP discovery message carries a first DHCP option field;
  • a DHCP offer message returned by the access point device, where the DHCP offer message carries a second DHCP option field;
  • the processor is further configured to compare the first DHCP option field with the second DHCP option field, and if the first DHCP option field is consistent with the second DHCP option field, The in-point device establishes a connection.
  • the processor is configured to disconnect the terminal Network connection, including:
  • the processor is further configured to:
  • the processor is further configured to After the network connection of the terminal, the access point AP function and the station STA function mode are switched to the station STA function mode;
  • the access point device In the STA mode of the station, the access point device is continuously monitored.
  • the processor performs the access point device in the STA mode in the station Continuous monitoring, comprising: the processor, if it detects that it is disconnected from the access point device, re-operating in the access point AP function and the station STA function mode, re-establishing a network with the terminal connection.
  • the wireless routing device determines whether there is an access point device allowed to access within the wireless connection range, and if there is an access point device that is allowed to access, The wireless routing device establishes a network connection with the access point device, and disconnects the network connection with the terminal, so that the terminal is connected to the access point device, and the access point device accesses the Internet, thereby implementing the terminal automatically switching the access point. .
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for automatically switching an access point according to the present invention
  • Embodiment 2 is a flowchart of Embodiment 2 of a method for automatically switching an access point according to the present invention
  • Embodiment 1 of a wireless routing device is a schematic structural diagram of Embodiment 1 of a wireless routing device according to the present invention.
  • FIG. 4 is a schematic structural diagram of Embodiment 2 of a wireless routing device according to the present invention.
  • the access point is divided into a fixed access point and a mobile access point, and the fixed access point is specifically fixed indoors as a network access port for the terminal to access the network, which may be used for a fixed user group.
  • the terminal used for network access which may specifically be a home hotspot for home wireless local area network coverage, or a hotspot for corporate wireless local area network coverage, etc., and mobile access
  • the point specifically refers to an access point that can be carried around and carries out high-speed data service through 4G ⁇ 3G ⁇ 2G.
  • the terminal used by the user can also access the network through the mobile access point in an area without a fixed access point, for example, wireless.
  • the routing device which may specifically be mobile wifi or the like.
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for automatically switching an access point according to the present invention.
  • the wireless routing device in the present embodiment specifically refers to a mobile access point, and the access point device specifically refers to a fixed access point, and the execution entity of this embodiment
  • the implementation scenario of the embodiment is that the wireless routing device establishes a network connection with the terminal.
  • the method in this embodiment may include:
  • Step 101 The wireless routing device determines whether there is an access point device allowed to access within the wireless connection range of the wireless routing device.
  • the wireless connection range of the wireless routing device refers to the effective working distance of the wireless routing device, and can also be understood as the signal coverage of the wireless routing device.
  • the wireless connection range of the wireless routing device is The routing device can discover other access point devices or can discover and establish network connections for the terminal.
  • Step 102 If the access point device exists, the wireless routing device sends a wireless connection request message to the access point device, and establishes a network connection with the access point device.
  • the access point device receives the wireless connection request message sent by the wireless routing device, and returns a wireless connection response message to the wireless routing device according to the wireless connection request message, thereby implementing the wireless routing device and The access point device establishes a connection.
  • Step 103 The wireless routing device disconnects a network connection with the terminal, to trigger the terminal to connect to the access point device, so that the terminal accesses the Internet through the access point device.
  • the wireless routing device disconnects from the terminal, and the number of the terminals may be one or more, because the terminal has automatic scanning and reconnecting functions.
  • the terminal that has lost connection with the wireless routing device will automatically scan other access point devices. When scanning the previously connected access point device, the terminal will reconnect to the access point device through the access point.
  • the device accesses the network to achieve Internet access. For example, a mobile phone of a user is used as a terminal, a home hotspot is used as an access point device, and a mobile hotspot is used as a wireless routing device. When the mobile phone of the user is usually at home, the home hotspot is used to access the network, and the home hotspot is covered.
  • the mobile phone of the user usually uses the mobile hotspot to access the network, and by using the method of this embodiment, when the mobile hotspot scans to the home hotspot that is allowed to access, A connection is established with the home hotspot, and after the connection is successfully established, the connection with the mobile phone is disconnected, so that the mobile phone is reconnected to the home hotspot, thereby automatically switching the access point.
  • the wireless routing device determines whether there is an access point device that is allowed to access in the wireless connection range of the wireless routing device, and specifically, the wireless routing device works in an access point AP function and a site.
  • the STA periodically scans the access point device to obtain the service set identifier of the scanned access point device, and identifies the service set identifier of the access point device and the access point stored by the access point device.
  • the service set identifier set of the device is compared to determine whether the access point device is an access point device that is allowed to access; if the service set identifier of the access point device exists in the service stored by the access point device
  • the set of identifiers is centralized, and the access point device is an access point device that allows access.
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the wireless routing device has an AP function and an STA function when the access point AP function and the station STA function mode are used.
  • the AP function specifically refers to a terminal that can be used for the terminal to scan, connect, and manage the connected terminal, and the STA function. Specifically, it can scan and connect other access point devices, that is, in the AP function and STA function mode, the wireless routing device can be used for scanning, connecting, and managing terminals connected thereto, and can also scan and connect other interfaces. Incoming device.
  • the wireless routing device may periodically scan the access point device around the wireless routing device, and the period may be flexibly set according to requirements, after the wireless routing device scans the access point device, the wireless routing device Obtaining the service set identifier of the access point device, comparing the service set identifier of the access point device with the stored access point device service set identifier set, and determining whether the access point device is allowed to access Incoming device.
  • the access point device is an access point device that is allowed to access
  • step 102 to step 103 are performed, and when the access point device is not an access point device that is allowed to access, the wireless routing device continues to perform periodic scanning. And keep the connection to the terminal.
  • the wireless routing device sends a wireless connection request message to the access point device, where the wireless route is established before establishing a network connection with the access point device.
  • the device may further send a dynamic host configuration protocol DHCP discovery message to the access point device, where the DHCP discovery message carries a first DHCP option field, and the wireless routing device receives a DHCP offer message returned by the access point device, The DHCP offer message carries a second DHCP option field; the wireless routing device compares the first DHCP option field with the The second DHCP option field is compared, and if the first DHCP option field is consistent with the second DHCP option field, a connection is established with the access point device.
  • Performing secondary auxiliary identification in this manner that is, first determining in step 101 whether the access point device is an access point device that is allowed to access, and if so, in the wireless routing device and the access point device Before establishing the connection, the second auxiliary identification process may also be performed, and the second access of the scanned access point device may be used for secure access.
  • the specific implementation manner that the wireless routing device disconnects the network connection with the terminal in step 103 may be that the wireless routing device sends a de-associate message to the terminal, and hides its own service set identifier (Service). Set Identifier (SSID) for access control of the terminal.
  • Service Service
  • Set Identifier SSID
  • the wireless routing device in step 103 can be disconnected from the terminal by using other methods. For example, the wireless routing device stops performing wireless communication interaction with the terminal, that is, the wireless routing device turns itself off. The AP function stops the terminal from scanning, connecting, and managing the terminals connected to it.
  • the wireless routing device disconnects from the wireless wide area network, that is, specifically disconnects from the 3GPP or 3GPP2 wireless wide area network, thereby effectively reducing the first access point. Power consumption to extend its working time.
  • the wireless wide area network described in this embodiment is different from the Internet in the present embodiment, and specifically refers to a wireless network provided by a mobile communication technology such as 4G/3G/2G, and uses the wireless wide area network to perform first access of Internet access. Point, the data needs to be accessed through the base station and then through the core network to the Internet.
  • the access point device of the present implementation can be directly connected to the Internet through a switching device.
  • the Internet can provide services such as communication and resource sharing for access devices, such as providing video or audio data resources to terminals.
  • the wireless routing device disconnects the network connection with the terminal, the wireless routing device is switched from the access point AP function and the station STA function mode to the station STA function mode; in the station STA function mode The wireless routing device continuously monitors the access point device. That is, after the wireless routing device disconnects from the terminal, it enters the STA function mode.
  • the wireless routing device monitors the connection state with the access point device, and if the wireless routing device detects that it is disconnected from the access point device, Then the wireless routing device works again on the access point AP function.
  • the STA function mode of the station re-establishes the network connection with the terminal, that is, the access point device fails to work normally, or the access point device reaches the access upper limit to eliminate the wireless routing device, or the access point device has limited load Therefore, the wireless routing device is removed, or the data link between the wireless routing device and the access point device is unreachable for a long time, or the wireless routing device is far away from an area that cannot be covered by the access point device, and any of the above cases may result in wireless routing.
  • the device is disconnected from the access point device, and the wireless routing device detects that the connection is disconnected and then works again in the access point AP function and the station STA function mode, and works on the access point AP function and the station STA function.
  • the routing device can be automatically searched for by the terminal and establish a connection with the terminal, so that the terminal can still access the network.
  • the wireless routing device disconnects the network connection with the terminal, so that the terminal is connected to the access point device, where the terminal connected to the access point device is not connected to the access point device for the first time, that is, the terminal
  • the WiFi connection password of the access point device is stored by itself, so that it can be automatically connected to the access point device.
  • the wireless routing device determines whether there is an access point device allowed to access within its wireless connection range. If there is an access point device that allows access, the wireless routing device establishes a network connection with the access point device. And disconnecting the network connection with the terminal, so that the terminal is connected to the access point device, and the terminal accesses the Internet through the access point device, thereby realizing that the terminal automatically switches from the wireless routing device to the access point device.
  • the wireless routing device is a mobile access point
  • the access point device is a fixed access point
  • the terminal automatically switches the access point between the mobile access point and the fixed access point.
  • the method is explained. It can be understood that the switching between the mobile access point and the mobile access point can also be implemented by referring to the idea of the embodiment of the present invention.
  • Embodiment 2 is a flowchart of Embodiment 2 of a method for automatically switching an access point according to the present invention.
  • This embodiment is specifically illustrated by using a wireless routing device as a mobile hotspot and an access point device as a home hotspot as an example.
  • the method of this embodiment may include:
  • the mobile hotspot works in an (AP+STA) mode.
  • the (AP+STA) mode is the access point AP function and site in the first embodiment of the present invention.
  • STA function mode that is, it can scan and connect other hotspot devices, and can establish connections with stations (STA) devices and manage STA devices.
  • the STA device can be a mobile phone, a tablet, or the like.
  • This (AP+STA) mode can also be referred to as a WiFi OFFLOAD mode.
  • a mobile hotspot in the (AP+STA) mode has both an AP function and an STA function.
  • the AP function specifically refers to that other devices can scan and connect.
  • the STA function specifically refers to scanning and connecting other hotspots.
  • the mobile hotspot periodically scans other hot spots existing around.
  • the mobile hotspot establishes a connection with the home hotspot.
  • the specific connection establishment process is that the mobile hotspot automatically initiates a WiFi connection request message to the home hotspot, and the home hotspot returns a WiFi connection response message to the mobile hotspot.
  • the DHCP option 125 field may also be used for secondary auxiliary identification.
  • the mobile hotspot carries the DHCP option 125 field in the DHCP discover message; after receiving the DHCP offer message of the home hotspot, the option 125 field is checked. If you are consistent, continue to connect; otherwise, discard, continue to scan / try other hotspots. In this way, the mobile router only automatically connects to the home router of the specified provider, making the access more secure.
  • the mobile hotspot After the connection is successful, the mobile hotspot automatically disables the AP function, and the STA device connected to the mobile hotspot is disconnected, so that the STA device automatically switches to the home hotspot by using the automatic scanning and reconnecting function of the STA device.
  • access control of the STA device can also be implemented by first sending a "de-associate” message, then hiding the SSID and not responding to the STA device access request. .
  • the mobile hotspot turns off the MODEM communication function.
  • the mobile hotspot is closed to the wireless WAN connection such as 3Gpp or 3Gpp2 to reduce power consumption and extend the working time of the mobile hotspot.
  • S208 The mobile hotspot continuously monitors the working status of the home hotspot.
  • the mobile hotspot continuously monitors the working status of the home hotspot by maintaining a WiFi connection with the home hotspot. That is, the mobile hotspot works in the STA mode, and the mobile hotspot in the STA mode has only the STA function, and the STA mode is the STA mode in the first embodiment of the present invention.
  • the mobile hotspot is detected to lose connection with the home hotspot (for example, the home hotspot is not working normally and passively disconnected, the access limit is reached, the load is removed, the load is limited, and the data link is disconnected, and the data link is disconnected for a long time.
  • the mobile hotspot automatically resumes the AP function, that is, moves back to the (AP+STA) mode, that is, the OFFLOAD mode, away from the situation that the home hotspot cannot be covered and actively disconnected.
  • the STA device can automatically search for and connect to the mobile hotspot.
  • the mobile hotspot automatically turns on the MODEM communication function, and restores the function of connecting through the 4G/3G/2G network.
  • the hotspots are periodically scanned for other hotspots.
  • the SSID of the hotspot is used to determine whether it is a preset home hotspot. If yes, the mobile hotspot establishes a connection with the home hotspot, and disconnects The STA device is connected, so that the STA device is automatically reconnected to the home hotspot, so that the STA device can automatically switch from the mobile hotspot to the home hotspot, that is, the STA device can automatically complete the handover within the coverage of the wireless LAN in the home.
  • the mobile hotspot when the STA device establishes a connection with the home hotspot for communication, the mobile hotspot also establishes a connection with the home hotspot, so that continuous monitoring of the home hotspot can be realized, and when the mobile hotspot is disconnected from the home hotspot, the AP can be restored.
  • the function enables the STA device to automatically search and connect to it, so that the STA device can automatically complete the handover within the coverage of the home terminal wireless LAN.
  • the method in this embodiment can implement automatic switching between the STA hotspot and the home hotspot.
  • the main idea of the present invention can be clearly understood by the detailed description of the above two embodiments, that is, the active control of the terminal by the mobile access point, thereby realizing automatic switching of the terminal, and continuing the fixed access point by the mobile access point.
  • Monitoring and identification can effectively control the handover of the terminal, and when an abnormality occurs in the fixed access point, the mobile access point can serve as a backup access point so that the terminal can continue to communicate with the network through the access point.
  • Embodiment 1 of a wireless routing device is a schematic structural diagram of Embodiment 1 of a wireless routing device according to the present invention.
  • the apparatus in this embodiment may include: a processing module 11, a sending module 12, and receiving.
  • the module 13 is configured to determine whether there is an access point device that allows access within the wireless connection range of the wireless routing device, and the sending module 12 is configured to: if the access point device exists, The access point device sends a wireless connection Receiving a request message, establishing a network connection with the access point device, the processing module 11 is further configured to disconnect a network connection with the terminal, to trigger the terminal to connect to the access point device, so that the The terminal accesses the Internet through the access point device.
  • the processing module 11 is configured to determine whether there is an access point device that is allowed to access in the wireless connection range of the wireless routing device, and specifically includes: the processing module 11 works at the access point AP function and the site In the STA function mode, the STA periodically scans the access point device to obtain the service set identifier of the scanned access point device, and identifies the service set identifier of the access point device and the access point stored by the access point device.
  • the service set identifier set of the device is compared to determine whether the access point device is an access point device that is allowed to access; if the service set identifier of the access point device exists in the service stored by the access point device
  • the set of identifiers is centralized, and the access point device is an access point device that allows access.
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the sending module 12 is further configured to: send a dynamic host configuration protocol DHCP discovery message to the access point device, where the DHCP discovery message carries a first DHCP option field; and the receiving module 13 is configured to: receive the a DHCP request message returned by the inbound device, where the DHCP offer message carries a second DHCP option field; the processing module 11 is further configured to: compare the first DHCP option field with the second DHCP option field, And establishing a connection with the access point device if the first DHCP option field is consistent with the second DHCP option field.
  • processing module 11 is configured to disconnect the network connection with the access device, specifically: stopping wireless communication interaction with the terminal; or sending a de-association message to the terminal, and hiding its own service set Logo.
  • processing module 11 of the wireless routing device of the present implementation is further configured to disconnect the connection with the wireless wide area network.
  • the processing module 11 is further configured to switch, by the access point AP function and the station STA function mode, to a station STA function mode after disconnecting the network connection with the terminal;
  • the wireless routing device continuously monitors the access point device.
  • the processing module 11 is configured to continuously monitor the access point device in the STA function mode of the station, where the processing module 11 monitors itself and the device.
  • the access point device is disconnected, the access point AP function and the station STA function mode are re-operated, and the network connection with the terminal is re-established.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1 or FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 4 is a schematic structural diagram of Embodiment 2 of a wireless routing device according to the present invention.
  • the wireless routing device 40 provided in this embodiment includes a processor 401, a transmitter 402, a receiver 403, a bus 404, and a memory 405.
  • the bus 404 is configured to connect to the processor 401, the transmitter 402, the receiver 403, and the memory 404, and transmit information;
  • the memory 405 stores execution instructions, and when the wireless routing device 40 is running, the processor 403 communicates with the memory 404.
  • the processor 403 runs the code stored in the memory 404, and performs the following operations: if the wireless routing device establishes a network connection with the terminal, determining whether there is an access point allowed to access within the wireless connection range of the wireless routing device. device;
  • the processor 403 is configured to determine whether there is an access point device that allows access within the wireless connection range of the wireless routing device, and specifically includes: in an access point AP function and a station STA function mode, The processor performs periodic scanning on the access point device by using the STA function, and obtains a service set identifier of the scanned access point device, and identifies the service set identifier of the access point device and the access point device stored by the access point device. The service set identifier set is compared, and it is determined whether the access point device is an access point device that is allowed to access;
  • the access point device is an access point device that is allowed to access
  • the service set identifier set stored by the access point device includes a service set identifier of at least one access point device.
  • the transmitter 402 is further configured to: before the establishing a network connection with the access point device, send a dynamic host configuration protocol DHCP discovery message to the access point device, where the DHCP discovery message carries a a DHCP option field;
  • the receiver 403 is further configured to: receive a DHCP offer message returned by the access point device, where the DHCP offer message carries a second DHCP option field;
  • the processor 401 is further configured to: use the first DHCP option field with the second DHCP The option field is compared, and if the first DHCP option field is consistent with the second DHCP option field, a connection is established with the access point device.
  • the processor 401 is configured to disconnect the network connection with the terminal, and specifically includes: stopping wireless communication interaction with the terminal; or sending a de-association message to the terminal by using the transmitter 402, and hiding the service of the terminal. Set logo.
  • the processor 401 is further configured to disconnect the connection with the wireless wide area network after disconnecting the network connection with the terminal.
  • the processor 401 is further configured to, after disconnecting the network connection with the terminal, switch from an access point AP function and a station STA function mode to a station STA function mode; in the station STA mode, the processing The device 401 continuously monitors the access point device.
  • the processor 401 is configured to continuously monitor the access point device in the STA mode of the station, and specifically, if it detects that the device is disconnected from the access point device, The access point AP function and the station STA function mode are re-established to establish a network connection with the terminal.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • receiver 403 in the embodiment of the present invention may also correspond to a transceiver of the wireless routing device.
  • Transmitter 402 can also correspond to a transceiver of a wireless routing device.
  • the processor 401 can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits that implement embodiments of the present invention.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例提供一种自动切换接入点的方法和无线路由设备。本发明实施例通过无线路由设备判断是否存在允许接入的接入点设备，若存在，在无线路由设备与该接入点设备建立连接，并断开与终端的连接，从而可以实现终端自动从无线路由设备切换至接入点设备。

Description

自动切换接入点的方法和无线路由设备 技术领域
本发明实施例涉及通信技术，尤其涉及一种自动切换接入点的方法和无线路由设备。
背景技术
无线局域网(Wireless Local Area Network，简称WLAN)是以无线介质进行通信的网络，其是计算机网络与通信技术相结合的产物，无线局域网通常包括接入点(Access Point，简称AP)和站点(Station，简称STA)等设备，其中，STA也可以称为终端或接入设备。
接入点可以连接无线网络，也可以连接有线网络，接入点也可称之为热点。其中，将应用于家庭中的无线局域网覆盖的热点称之为家庭热点，家庭热点(包括带WiFi AP功能的用户端设备)一般通过以太网方式上行，作为互连网络入口固定在家庭内，因此其无法随身携带。然而另一种移动热点，其主要应用于室外无线局域网覆盖，例如移动WiFi(Mobile WiFi)，移动热点可随身携带，通过第四代移动通信技术(the 4th Generation mobile communication technology，简称4G)/第三代移动通信技术(3rd-Generation，简称3G)/第二代移动通信技术(2-Generation wireless telephone technology，简称2G)可以进行高速数据业务。
越来越多的用户的终端可以通过以上两种接入点接入互联网，实现网页浏览、数据传输或语音通话等业务。通常情况下，如果终端位于家庭中的无线局域网覆盖范围外则可以通过移动热点接入互联网，而当终端位于家庭中的无线局域网覆盖范围内则可以通过家庭热点接入互联网。然而在终端设备从家庭中的无线局域网覆盖范围外进入到家庭中的无线局域网覆盖范围内时，终端仍然连接在家庭中的无线局域网覆盖范围外的移动热点上，无法自动切换到家庭热点上，只能靠用户手动关闭移动热点以接入家庭热点，或者在终端上手动扫描其他热点，而后断开移动热点，连接家庭热点以完成切换。由此可以看出，上述技术中在家庭中的无线局域网覆 盖范围外内，终端无法自动完成切换。
发明内容
本发明实施例提供一种自动切换接入点的方法和无线路由设备，以实现终端自动切换接入点。
第一方面，本发明实施例提供一种自动切换接入点的方法，无线路由设备与终端建立网络连接的情况下，所述方法包括：
所述无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接；
所述无线路由设备断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
结合第一方面，在第一方面的第一种可能的实现方式中，所述无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：
所述无线路由设备工作在接入点AP功能和站点STA功能模式下，通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
结合第一方面或者第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接之前，所述方法还包括：
所述无线路由设备向所述接入点设备发送动态主机配置协议DHCP发 现消息，所述DHCP发现消息携带有第一DHCP选项字段；
所述无线路由设备接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
所述无线路由设备将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
结合第一方面、第一方面的第一种至第二种任一种可能的实现方式，在第一方面的第三种可能的实现方式中，所述无线路由设备断开与所述终端的网络连接，包括：
所述无线路由设备停止与所述终端进行无线通信交互；或
所述无线路由设备向所述终端发送去关联消息，并隐藏自身的服务集标识。
结合第一方面、第一方面的第一种至第三种任一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述无线路由设备断开与所述终端的连接之后，还包括：
所述无线路由设备断开与无线广域网的连接。
结合第一方面、第一方面的第一种至第四种任一种可能的实现方式，在第一方面的第五种可能的实现方式中，所述无线路由设备断开与所述终端的网络连接之后，还包括：
所述无线路由设备由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测。
结合第一方面的第五种可能的实现方式，在第一方面的第六种可能的实现方式中，在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测,包括：
若所述无线路由设备监测到自身与所述接入点设备断开连接，则所述无线路由设备重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
第二方面，本发明实施例提供一种无线路由设备，所述无线路由设备 与终端建立网络连接的情况下，包括：
处理模块，用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
发送模块，用于若存在所述接入点设备，则向所述接入点设备发送无线连接请求消息，与所述接入点设备建立网络连接；
所述处理模块，还用于断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
结合第二方面，在第二方面的第一种可能的实现方式中，所述处理模块用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：所述处理模块工作在接入点AP功能和站点STA功能模式下，利用所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述发送模块还用于：所述与所述接入点设备建立网络连接之前，向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
所述无线路由设备还包括接收模块，用于接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
所述处理模块还用于：将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
结合第二方面、第二方面的第一种至第二种任一种可能的实现方式，在第二方面的第三种可能的实现方式中，所述处理模块用于断开与所述终端的网络连接，具体包括：
停止与所述终端进行无线通信交互；或，
向所述终端发送去关联消息，并隐藏自身的服务集标识。
结合第二方面、第二方面的第一种至第三种任一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述处理模块用于断开与所述终端的网络连接之后，所述处理模块还用于：
断开与无线广域网的连接。
结合第二方面、第二方面的第一种至第四种任一种可能的实现方式，在第二方面的第五种可能的实现方式中，所述处理模块还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
在所述站点STA模式下，对所述接入点设备进行持续监测。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实现方式中，所述处理模块用于在所述站点STA功能模式下，对所述接入点设备进行持续监测，包括：所述处理模块，若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
第三方面，本发明实施例提供一种无线路由设备，所述无线路由设备与终端建立网络连接的情况下，包括：
处理器，用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
发送器，用于若存在所述接入点设备，则向所述接入点设备发送无线连接请求消息，与所述接入点设备建立网络连接；
所述处理器，还用于断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
结合第三方面，在第三方面的第一种可能的实现方式中，所述处理器用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：在接入点AP功能和站点STA功能模式下，所述处理器通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入 点设备；
若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述无线路由设备还包括接收器，所述无线路由设备与所述接入点设备建立网络连接之前，所述发送器向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
所述接收器接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
所述处理器还用于：将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
结合第三方面、第三方面的第一种至第二种任一种可能的实现方式，在第三方面的第三种可能的实现方式中，所述处理器用于断开与所述终端的网络连接，具体包括：
停止与所述终端进行无线通信交互；或，
向所述终端发送去关联消息，并隐藏自身的服务集标识。
结合第三方面、第三方面的第一种至第三种任一种可能的实现方式，在第三方面的第四种可能的实现方式中，所述处理器还用于：
在断开与所述终端的网络连接之后，断开与无线广域网的连接。
结合第三方面、第三方面的第一种至第四种任一种可能的实现方式，在第三方面的第五种可能的实现方式中，所述处理器还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
在所述站点STA模式下，对所述接入点设备进行持续监测。
结合第三方面的第五种可能的实现方式，在第三方面的第六种可能的实现方式中，所述处理器在所述站点STA模式下，对所述接入点设备进行 持续监测，包括：所述处理器，若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
本发明实施例自动切换接入点的方法和无线路由设备，无线路由设备判断在其无线连接范围内是否存在允许接入的接入点设备，若存在允许接入的接入点设备，则该无线路由设备与该接入点设备建立网络连接，并断开与终端的网络连接，从而使得终端连接至接入点设备，通过该接入点设备接入互联网，进而实现终端自动切换接入点。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明自动切换接入点的方法实施例一的流程图；
图2为本发明自动切换接入点的方法实施例二的流程图；
图3为本发明无线路由设备实施例一的结构示意图；
图4为本发明无线路由设备实施例二的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例将接入点分为固定接入点和移动接入点，固定接入点具体指固定在室内作为网络接入口，供终端接入网络，其通常可以是用于固定用户群所使用的终端进行网络接入，其具体可以是用于家庭无线局域网覆盖的家庭热点、或者用于公司无线局域网覆盖的热点等等，而移动接入 点具体指可随身携带、通过4G\3G\2G进行高速数据业务的接入点，用户所使用的终端通过移动接入点在没有固定接入点覆盖的区域也可以接入网络，例如，无线路由设备，其具体可以是移动wifi等等。
图1为本发明自动切换接入点的方法实施例一的流程图，本实施中的无线路由设备具体指移动接入点，接入点设备具体指固定接入点，本实施例的执行主体为无线路由设备，本实施例的实施场景为无线路由设备与终端建立网络连接，如图1所示，本实施例的方法可以包括：
步骤101、无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备。
其中，所述无线路由设备的无线连接范围即指所述无线路由设备的有效工作距离，也可以理解为所述无线路由设备的信号覆盖范围，在该无线路由设备的无线连接范围内，该无线路由设备可以发现其他接入点设备，或者可以供终端发现并建立网络连接。
步骤102、若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息，与所述接入点设备建立网络连接。
具体的，所述接入点设备接收到所述无线路由设备发送的无线连接请求消息，根据所述无线连接请求消息向所述无线路由设备返回无线连接响应消息，从而实现所述无线路由设备与所述接入点设备建立连接。
步骤103、所述无线路由设备断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
具体的，在步骤102无线路由设备和接入点设备建立连接后，该无线路由设备断开与终端的连接，该终端的个数可以是一个或多个，由于终端具有自动扫描和重连功能，与无线路由设备失去连接的终端便会自动进行扫描其他接入点设备，当扫描到之前连接过的接入点设备时，终端便会重连至该接入点设备，通过该接入点设备接入网络，实现互联网访问。举例而言，用户的一手机作为终端，家庭热点作为接入点设备，移动热点作为无线路由设备，该用户的该手机通常在家中时，会使用家庭热点接入网络，而在该家庭热点覆盖范围外，该用户的该手机通常使用移动热点接入网络，利用本实施例的方法，移动热点通过扫描到允许接入的该家庭热点时， 便与该家庭热点建立连接，并在建立连接成功后，断开与该手机的连接，使得该手机重连至该家庭热点，从而实现自动切换接入点。
可选的，所述无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体可以为，所述无线路由设备工作在接入点AP功能和站点STA功能模式下，通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备。其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
其中，该无线路由设备在该接入点AP功能和站点STA功能模式下时，具有AP功能和STA功能，其中，AP功能具体指可以供终端扫描、连接和管理其下挂的终端，STA功能具体指可以扫描和连接其他接入点设备，即在该AP功能和STA功能模式下，该无线路由设备可以供终端扫描、连接，还可以管理其下挂的终端，还可以扫描和连接其他接入点设备。
具体的，该无线路由设备可以对该无线路由设备周围的接入点设备进行周期性扫描，该周期可以根据需求进行灵活设置，在该无线路由设备扫描到接入点设备后，该无线路由设备获取该接入点设备的服务集标识，将该接入点设备的服务集标识与自身存储的接入点设备服务集标识集进行比对，判断该接入点设备是否为允许接入的接入点设备。当该接入点设备为允许接入的接入点设备时，执行步骤102至步骤103，当该接入点设备不是允许接入的接入点设备时，该无线路由设备继续进行周期性扫描，并保持与终端的连接。
可选的，所述若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接之前，所述无线路由设备还可以向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；所述无线路由设备接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；所述无线路由设备将所述第一DHCP选项字段与所 述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。利用这种方式进行二次辅助识别，即首先在步骤101中判断所述接入点设备是否为允许接入的接入点设备，如果是，在所述无线路由设备与所述接入点设备建立连接之前，还可以进行上述第二次辅助识别过程，利用对扫描到的接入点设备进行二次识别可以实现安全接入。
进一步的，步骤103中所述无线路由设备断开与终端的网络连接的具体实现方式可以为所述无线路由设备向终端发送去关联(de-associate)消息，并隐藏自身的服务集标识(Service Set Identifier，简称SSID)，从而实现对终端的接入控制。当然可以理解的，也可以采用其他方式实现步骤103中的所述无线路由设备断开与终端的连接，例如，所述无线路由设备停止与终端进行无线通信交互，即所述无线路由设备关闭自身AP功能，即停止供终端扫描、连接和管理其下挂的终端。
进一步的，无线路由设备断开与终端的网络连接后，该无线路由设备断开与无线广域网的连接，即具体可以断开与3GPP或3GPP2无线广域网的连接，从而可以有效降低第一接入点的功耗，以延长其工作时间。需要说明的是本实施例所述的无线广域网与本实施中的互联网不同，其具体指由4G/3G/2G等移动通信技术提供的无线网络，利用该无线广域网进行互联网访问的第一接入点，需要将数据通过基站再通过核心网最终到达互联网进行访问。本实施的接入点设备可以直接通过交换设备与互联网连接。利用互联网可以为接入设备提供通讯、资源共享等服务，例如为终端提供视频或音频数据资源。
进一步的，所述无线路由设备断开与所述终端的网络连接之后，所述无线路由设备由接入点AP功能和站点STA功能模式切换为站点STA功能模式；在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测。即在无线路由设备断开与终端的连接之后，其进入STA功能模式。
进一步的，当无线路由设备工作于STA功能模式时，该无线路由设备会对其与接入点设备的连接状态进行监测，若该无线路由设备监测到自身与该接入点设备断开连接，则该无线路由设备重新工作于接入点AP功能 和站点STA功能模式，重新建立与所述终端的网络连接，即在接入点设备不能正常工作、或者接入点设备达到接入上限从而剔除该无线路由设备、或者接入点设备负载受限从而剔除该无线路由设备、或者该无线路由设备与接入点设备之间的数据链路长时间不通、或者无线路由设备远离到接入点设备无法覆盖的区域，上述任一情况都会导致无线路由设备与接入点设备连接断开，该无线路由设备监测到连接断开后便重新工作于接入点AP功能和站点STA功能模式，工作于接入点AP功能和站点STA功能下的该无线路由设备又可以被终端自动搜索到并与其建立连接，使得终端仍然可以接入网络。
需要说明的是，上述步骤103中无线路由设备断开与终端的网络连接，以使终端连接至接入点设备，这里的终端连接至接入点设备并非首次连接至接入点设备，即终端自身存储有该接入点设备的WiFi连接密码，从而可以自动连接至接入点设备。
本实施例，无线路由设备判断在其无线连接范围内是否存在允许接入的接入点设备，若存在允许接入的接入点设备，则该无线路由设备与该接入点设备建立网络连接，并断开与终端的网络连接，从而使得终端连接至接入点设备，通过该接入点设备接入互联网，进而实现终端自动从无线路由设备切换至接入点设备。
需要说明的是，本发明实施例中对无线路由设备为移动接入点，接入点设备为固定接入点，移动接入点与固定接入点之间实现终端的自动切换接入点的方法进行了解释说明，当然可以理解的，借鉴本发明实施例的思想也可以实现终端在移动接入点与移动接入点之间的切换。
下面采用一个具体的实施例，对图1所示方法实施例的技术方案进行详细说明。
图2为本发明自动切换接入点的方法实施例二的流程图，本实施例具体以无线路由设备为移动热点、接入点设备为家庭热点为例做示意性举例说明，如图2所示，本实施例的方法可以包括：
S201、在移动热点上预置家庭热点的SSID。
S202、移动热点工作于(AP+STA)模式。
其中，(AP+STA)模式即为本发明实施例一中的接入点AP功能和站点 STA功能模式，即可以扫描、连接其他热点设备，并且可以与站点(Station，简称STA)设备建立连接并管理各STA设备。该STA设备可以是手机、平板电脑等。该(AP+STA)模式也可称之为WiFi OFFLOAD模式。处于(AP+STA)模式的移动热点既具有AP功能也具有STA功能，其中，AP功能具体指可以供其他设备扫描和连接，STA功能具体指可以扫描和连接其他热点。
S203、移动热点周期性扫描周围存在的其他热点。
S204、当扫描到其他热点时，通过比对SSID判断其是否为预置的家庭热点。如果是，则执行S205；否则，执行S203。
S205、移动热点与家庭热点建立连接。
具体的建立连接过程为，移动热点自动向家庭热点发起WiFi连接请求消息，家庭热点向移动热点返回WiFi连接响应消息。
其中，还可利用DHCP option 125字段(Vendor ldentifying Vendor)进行二次辅助识别，具体的，移动热点在DHCP discover消息中携带DHCP option 125字段；收到家庭热点的DHCP offer消息后检查其option 125字段；如果一致则继续连接；否则丢弃，继续扫描/尝试其他热点。通过这种方式使移动路由器只自动连接指定供应商的家庭路由器，使得接入更为安全。
S206、连接成功后，移动热点自动关闭AP功能，触使已连接到移动热点上的STA设备连接断开，从而利用STA设备的自动扫描和重连功能，实现STA设备自动切换到家庭热点上。
其中，除了采用“关闭AP功能”方式外，也可通过先发送“去关联”(de-associate)消息，而后隐藏SSID、不响应STA设备接入请求的方式，实现对STA设备进行接入控制。
S207、移动热点关闭MODEM通信功能。
即移动热点关闭与3Gpp或3Gpp2等无线广域网的连接，以降低功耗，延长移动热点的工作时间。
S208、移动热点对家庭热点工作状态进行持续监测。
具体的，移动热点通过维持与家庭热点的WiFi连接，实现对家庭热点工作状态的持续监测。即该移动热点工作于STA模式，STA模式的移动热点仅具有STA功能，该STA模式即为本发明实施例一中的STA模式。
S209、如果移动热点与家庭热点的连接断开，则移动热点自动恢复AP功能。
具体的，移动热点一旦监测到与家庭热点失去连接(如家庭热点不能正常工作而被动断开，达到接入上限而被剔除，负载受限而被剔除，数据链路长时间不通而主动断开，远离到家庭热点无法覆盖的地方而主动断开等情况)，则移动热点自动恢复AP功能，即重新工作于(AP+STA)模式，亦即OFFLOAD模式。此时STA设备又可自动搜索并连接上移动热点。
S210、移动热点自动开启MODEM通信功能，恢复通过4G/3G/2G连网的功能。
本实施例，通过移动热点周期性扫描周围其他热点，当扫描到其他热点时，根据热点的SSID判断是否为预置的家庭热点，如果是，则移动热点与家庭热点建立连接，并断开与STA设备的连接，从而使得STA设备自动重连至家庭热点上，从而实现STA设备可以自动从移动热点切换至家庭热点，即在家庭中的无线局域网覆盖范围外内，STA设备可以自动完成切换。进一步的，在STA设备与家庭热点建立连接进行通信的同时，移动热点也与家庭热点建立连接，从而可以实现对家庭热点的持续监测，当移动热点与家庭热点连接断开时，可以恢复期AP功能，使得STA设备又可以自动搜索并连接至其上，从而可以实现在家庭终端无线局域网覆盖范围内外，STA设备也可以自动完成切换。综上所述，即本实施例的方法可以实现STA设备在移动热点与家庭热点之间的自动切换。
通过上述两个实施例的详细说明可以清楚的理解本发明的主要思想，即通过移动接入点对终端的主动控制，从而实现终端的自动切换，通过移动接入点对固定接入点的持续监测和识别，可以有效控制终端的切换，并在固定接入点出现异常时，移动接入点可以作为备份接入点使得终端可以继续通过接入点与网络进行通信。
图3为本发明无线路由设备实施例一的结构示意图，如图3所示，无线路由设备与终端建立网络连接的情况下，本实施例的装置可以包括：处理模块11、发送模块12和接收模块13，其中，处理模块11用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，发送模块12用于若存在所述接入点设备，则向所述接入点设备发送无线连 接请求消息，与所述接入点设备建立网络连接，所述处理模块11还用于断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
进一步的，所述处理模块11用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：所述处理模块11工作在接入点AP功能和站点STA功能模式下，通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备。其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
所述发送模块12还用于：向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；所述接收模块13用于：接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；所述处理模块11还用于：将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
进一步的，所述处理模块11用于断开与接入设备的网络连接，具体包括：停止与所述终端进行无线通信交互；或，向所述终端发送去关联消息，并隐藏自身的服务集标识。
进一步的，本实施的无线路由设备的处理模块11还用于断开与无线广域网的连接。
可选的，所述处理模11块还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；在所述站点STA模式下，所述无线路由设备对所述接入点设备进行持续监测。
进一步的，所述处理模块11用于在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测，具体可以为，所述处理模块11若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
本实施例的装置，可以用于执行图1或图2所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图4为本发明无线路由设备实施例二的结构示意图。如图4所示，本实施例提供的无线路由设备40包括处理器401、发送器402、接收器403、总线404和存储器405。其中，总线404用于连接处理器401、发送器402、接收器403、存储器404，并传输信息；存储器405存储执行指令，当无线路由设备40运行时，处理器403与存储器404之间通信，处理器403运行存储器404中存储的代码，执行如下操作：所述无线路由设备与终端建立网络连接的情况下，判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
若存在所述接入点设备，则通过发送器402向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接；
断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
进一步的，所述处理器403用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：在接入点AP功能和站点STA功能模式下，所述处理器通过所述STA功能对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
进一步的，所述发送器402还用于：所述与所述接入点设备建立网络连接之前，向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
所述接收器403还用于：接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
所述处理器401还用于：将所述第一DHCP选项字段与所述第二DHCP 选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
所述处理器401用于断开与所述终端的网络连接，具体包括：停止与所述终端进行无线通信交互；或，通过发送器402向所述终端发送去关联消息，并隐藏自身的服务集标识。
所述处理器401还用于：在断开与所述终端的网络连接之后，断开与无线广域网的连接。
所述处理器401还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；在所述站点STA模式下，所述处理器401对所述接入点设备进行持续监测。
所述处理器401用于在所述站点STA模式下，对所述接入点设备进行持续监测，具体可以为，若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
本实施例的设备，可以用于执行方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
需要说明的是，本发明实施例中的接收器403也可以对应无线路由设备的收发器。发送器402也可以对应无线路由设备的收发器。处理器401可以是一个中央处理器(Central Processing Unit，CPU)，或者是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者完成实施本发明实施例的一个或多个集成电路。
在本发明所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述该作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方， 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (21)

  1. 一种自动切换接入点的方法，无线路由设备与终端建立网络连接的情况下，所述方法包括：
    所述无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
    若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接；
    所述无线路由设备断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
  2. 根据权利要求1所述的方法，其特征在于，所述无线路由设备判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：
    所述无线路由设备工作在接入点AP功能和站点STA功能模式下，通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
    若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
    其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
  3. 根据权利要求1或2所述的方法，其特征在于，所述若存在所述接入点设备，则所述无线路由设备向所述接入点设备发送无线连接请求消息,与所述接入点设备建立网络连接之前，所述方法还包括：
    所述无线路由设备向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
    所述无线路由设备接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
    所述无线路由设备将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致， 则与所述接入点设备建立连接。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述无线路由设备断开与所述终端的网络连接，包括：
    所述无线路由设备停止与所述终端进行无线通信交互；或
    所述无线路由设备向所述终端发送去关联消息，并隐藏自身的服务集标识。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述无线路由设备断开与所述终端的网络连接之后，还包括：
    所述无线路由设备断开与无线广域网的连接。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述无线路由设备断开与所述终端的网络连接之后，还包括：
    所述无线路由设备由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
    在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测。
  7. 根据权利要求6所述的方法，其特征在于，在所述站点STA功能模式下，所述无线路由设备对所述接入点设备进行持续监测,包括：
    若所述无线路由设备监测到自身与所述接入点设备断开连接，则所述无线路由设备重新工作于所述接入点AP功能和站点STA功能模式,重新建立与所述终端的网络连接。
  8. 一种无线路由设备，所述无线路由设备与终端建立网络连接的情况下，其特征在于，包括：
    处理模块，用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
    发送模块，用于若存在所述接入点设备，则向所述接入点设备发送无线连接请求消息，与所述接入点设备建立网络连接；
    所述处理模块，还用于断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
  9. 根据权利要求8所述的无线路由设备，其特征在于，所述处理模块用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的 接入点设备，具体包括：所述处理模块工作在接入点AP功能和站点STA功能模式下，通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
    若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
    其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
  10. 根据权利要求8或9所述的无线路由设备，其特征在于，所述发送模块还用于：向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
    所述无线路由设备还包括接收模块，用于接收所述接入点设备返回的DHCP提议消息，所述DHCP提议消息携带有第二DHCP选项字段；
    所述处理模块还用于：将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
  11. 根据权利要求8至10任一项所述无线路由设备，其特征在于，所述处理模块用于断开与所述终端的网络连接，具体包括：
    停止与所述终端进行无线通信交互；或，
    向所述终端发送去关联消息，并隐藏自身的服务集标识。
  12. 根据权利要求8至11任一项所述的无线路由设备，其特征在于，所述处理模块用于断开与所述终端的网络连接之后，所述处理模块还用于：
    断开与无线广域网的连接。
  13. 根据权利要求8至12任一项所述的无线路由设备，其特征在于，所述处理模块还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
    在所述站点STA模式下，对所述接入点设备进行持续监测。
  14. 根据权利要求13所述的无线路由设备，其特征在于，所述处理 模块用于在所述站点STA功能模式下，对所述接入点设备进行持续监测，包括：
    所述处理模块,若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
  15. 一种无线路由设备，所述无线路由设备与终端建立网络连接的情况下，其特征在于，包括：
    处理器，用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备；
    发送器，用于若存在所述接入点设备，则向所述接入点设备发送无线连接请求消息，与所述接入点设备建立网络连接；
    所述处理器，还用于断开与所述终端的网络连接，以触发所述终端连接至所述接入点设备，使所述终端通过所述接入点设备接入互联网。
  16. 根据权利要求15所述的无线路由设备，其特征在于，所述处理器用于判断在所述无线路由设备的无线连接范围内是否存在允许接入的接入点设备，具体包括：在接入点AP功能和站点STA功能模式下，所述处理器通过所述STA对接入点设备进行周期性扫描，获取扫描到的接入点设备的服务集标识，将所述接入点设备的服务集标识与自身存储的接入点设备的服务集标识集进行比对，判断所述接入点设备是否为允许接入的接入点设备；
    若所述接入点设备的服务集标识存在于所述接入点设备存储的服务集标识集中，则所述接入点设备为允许接入的接入点设备；
    其中，所述接入点设备存储的服务集标识集包括至少一个接入点设备的服务集标识。
  17. 根据权利要求15或16所述的无线路由设备，其特征在于，所述无线路由设备还包括接收器,
    所述无线路由设备与所述接入点设备建立网络连接之前,所述发送器向所述接入点设备发送动态主机配置协议DHCP发现消息，所述DHCP发现消息携带有第一DHCP选项字段；
    所述接收器接收所述接入点设备返回的DHCP提议消息，所述DHCP提 议消息携带有第二DHCP选项字段；
    所述处理器还用于：将所述第一DHCP选项字段与所述第二DHCP选项字段进行比较，若所述第一DHCP选项字段与所述第二DHCP选项字段一致，则与所述接入点设备建立连接。
  18. 根据权利要求15至17任一项所述无线路由设备，其特征在于，所述处理器用于断开与所述终端的网络连接，具体包括：
    停止与所述终端进行无线通信交互；或，
    向所述终端发送去关联消息，并隐藏自身的服务集标识。
  19. 根据权利要求15至18任一项所述的无线路由设备，其特征在于，所述处理器还用于：
    在断开与所述终端的网络连接之后，断开与无线广域网的连接。
  20. 根据权利要求15至19任一项所述的无线路由设备，其特征在于，所述处理器还用于，在断开与所述终端的网络连接之后，由接入点AP功能和站点STA功能模式切换为站点STA功能模式；
    在所述站点STA模式下，对所述接入点设备进行持续监测。
  21. 根据权利要求20所述的无线路由设备，其特征在于，所述处理器用于在所述站点STA模式下，对所述接入点设备进行持续监测，包括：
    所述处理器，若监测到自身与所述接入点设备断开连接，则重新工作于所述接入点AP功能和站点STA功能模式，重新建立与所述终端的网络连接。
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US15/560,860 US10390278B2 (en) 2015-03-24 2015-03-24 Method for automatic switching between access points, and wireless routing device
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