WO2022141000A1 - 一种网络切换方法、终端设备及接入点设备 - Google Patents

一种网络切换方法、终端设备及接入点设备 Download PDF

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Publication number
WO2022141000A1
WO2022141000A1 PCT/CN2020/140424 CN2020140424W WO2022141000A1 WO 2022141000 A1 WO2022141000 A1 WO 2022141000A1 CN 2020140424 W CN2020140424 W CN 2020140424W WO 2022141000 A1 WO2022141000 A1 WO 2022141000A1
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Prior art keywords
network
terminal device
access point
point device
processor
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PCT/CN2020/140424
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English (en)
French (fr)
Inventor
汤国望
宫相霖
王振中
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华为技术有限公司
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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 CN202080108171.XA priority Critical patent/CN116671182A/zh
Priority to EP20967350.8A priority patent/EP4255032A4/en
Priority to PCT/CN2020/140424 priority patent/WO2022141000A1/zh
Publication of WO2022141000A1 publication Critical patent/WO2022141000A1/zh
Priority to US18/341,839 priority patent/US20230337091A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H04W12/062—Pre-authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/73—Access point logical identity
    • 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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0038—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of security context information
    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • 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 application relate to the field of wireless network technologies, and in particular, to a network switching method, a terminal device, and an access point device.
  • existing access point devices can support multiple frequency bands (eg, 2.4GHz and 5GHz) at the same time, and even the same frequency band can support multiple networks (eg, home network and guest network).
  • a router can support 2.4GHz and 5GHz.
  • the 5GHz network When transmitting in a short distance, the 5GHz network has large bandwidth, low latency, and better user experience.
  • the transmission distance is long, due to the large attenuation of the 5GHz network through the wall, the signal will be poor during long-distance transmission.
  • the 2.4GHz network has a relatively small attenuation through the wall and a large coverage area, and the user experience is better during long-distance transmission.
  • Figure 1 is an application scenario of a dual-band router.
  • the router supports 2.4GHz and 5GHz.
  • the service set identifier (SSID) of these two networks is different.
  • the SSID of the 5GHz network is xxxx_5G, 2.4
  • the SSID of the GHz network is xxxx.
  • the terminal device is connected to the 5GHz network.
  • the signal of the 5GHz network is getting worse and worse.
  • the application of the terminal device will prompt a network abnormality message such as "Unable to connect to the server".
  • the terminal device When the distance between the terminal device and the router is too far, the signal of the 5GHz network is too poor, causing the network connection of the terminal device to be disconnected. At this time, the 2.4GHz network of the router has stronger ability to penetrate the wall, and the signal strength is still strong, and the terminal device can continue to connect to the 2.4GHz network of the router and continue to use. However, in the process of switching from the 5GHz network to the 2.4GHz network, the terminal device needs to re-acquire the Internet protocol (IP) address and establish a protocol stack link before application-level data communication can be performed. Therefore, the terminal device is in the process of network switching. Disconnected state, resulting in poor user experience.
  • IP Internet protocol
  • Embodiments of the present application provide a network switching method, a terminal device, and an access point device. During the network switching process, the network connection between the terminal and the access point device will not be disconnected, which can improve user experience.
  • a network switching method includes: a terminal device detects network parameters of a first wireless-fidelity (Wi-Fi) network connected to an access point device; In the case that the network parameters of the first Wi-Fi network meet the preset conditions, the terminal device initiates scanning; if the terminal device scans the second Wi-Fi network of the access point device, and the terminal device has been associated with the first Wi-Fi network Second Wi-Fi network, the terminal device obtains the authentication information of the second Wi-Fi network; wherein, the service set identifier SSIDs of the second Wi-Fi network and the first Wi-Fi network are different; authentication information, the terminal device accesses the second Wi-Fi network; the second Wi-Fi network reuses the terminal device to communicate with the protocol stack link established in the first Wi-Fi network.
  • Wi-Fi wireless-fidelity
  • the terminal device switches from the first Wi-Fi network of the access point device to the second Wi-Fi network of the access point device, since the terminal device does not send a disassociation request to the access point device, the terminal and the When the second Wi-Fi network communicates, the protocol stack link established between the terminal device and the first Wi-Fi network is multiplexed. Therefore, in the process of switching networks, the terminal device does not need to obtain an IP address again. The network connection between the access point devices has not been disconnected, and there will be no problems such as network disconnection of the terminal device, which can improve the user experience.
  • the terminal device does not send a disassociation request to the access point device, so the network between the terminal device and the access point device is The connection is not disconnected.
  • the terminal device needs to be disconnected in the process of switching the network, so that the terminal device needs to re-acquire an IP address and establish a protocol stack link when it is reconnected.
  • the Wi-Fi channel is switched, there is no need to re-acquire the IP address and re-establish the protocol stack link, which improves the user experience.
  • the frequency bands of the first Wi-Fi network and the second Wi-Fi network are different.
  • the terminal device can switch between networks in different frequency bands in the access point device, and the network connection between the terminal device and the access point device is not interrupted during the process of switching between networks in different frequency bands. Therefore, the terminal device only needs to switch the Wi-Fi channel when switching the network, and does not need to re-acquire the IP address and establish the protocol stack link, which can improve the user experience.
  • the frequency band of the first Wi-Fi network is 2.4GHz, 5GHz or 6GHz
  • the frequency band of the second Wi-Fi network is 2.4GHz , 5GHz or 6GHz.
  • the terminal device can switch from the 2.4GHz network of the access point device to the 5GHz network, or from the 5GHz network of the access point device to the 2.4GHz network, and can also switch from the 2.4GHz network in the terminal device to the 6GHz network network, etc.
  • the terminal device When the terminal device switches between the above-mentioned networks, the connection between the terminal device and the access point device is not disconnected, so the terminal device only needs to switch the Wi-Fi channel when switching the network, and does not need to re-acquire the IP address, Establishing a protocol stack link can improve user experience.
  • This solution does not limit the specific frequency bands supported by the access point device.
  • the access point device may also support other subsequent extended frequency bands, for example, the access point device supports 7GHz or other subsequent extended frequency bands.
  • the above-mentioned first Wi-Fi network is a home network
  • the above-mentioned second Wi-Fi network is a guest network
  • the above-mentioned first Wi-Fi network is a guest network
  • the Fi network is a guest network
  • the above-mentioned second Wi-Fi network is a home network.
  • the terminal device can switch between the home network of the access point device and the guest network, and in the process of switching between the home network and the guest network, the connection between the terminal device and the access point device is not Therefore, the terminal device only needs to establish a Wi-Fi connection, and does not need to re-acquire an IP address and establish a protocol stack link, which can improve the user experience.
  • the frequency bands of the home network and the guest network may be the same or different.
  • the above method further includes: the terminal device sends the first A notification message, where the first notification message is used to indicate that the terminal device is in a low power consumption mode.
  • the terminal device sends a first notification message indicating that the terminal device is in a low power consumption mode to the access point device, so that the access point device can cache the data of the terminal device, so as to prevent the first Wi-Fi network from being relatively
  • the problem is that when the data sent by the access point device to the terminal device for many times is not received by the terminal device, the access point device actively kicks off the terminal and disconnects the connection, which can further ensure that the terminal device and the access point device are disconnected. The network connection between them will not be disconnected.
  • the above method further includes: the terminal device receiving the first data sent by the access point device through the second Wi-Fi network, the The first data is data cached by the access point device through the first Wi-Fi network. Based on this solution, after the terminal device establishes a Wi-Fi connection with the second Wi-Fi network of the access point device, the terminal device can receive the data cached by the access point device in the first Wi-Fi network, so that after switching networks, The data of the terminal device will not be lost, ensuring the normal communication of the terminal device, and further improving the user experience.
  • the terminal device initiating scanning includes: the terminal device initiating scanning based on the channel information of the second Wi-Fi network. Based on this solution, when the terminal device initiates scanning, it can scan based on the channel information of the second Wi-Fi network, thereby saving scanning time and improving user experience.
  • the network parameters of the first Wi-Fi network satisfying the preset condition include: the quality of the first Wi-Fi network is lower than the first Wi-Fi network.
  • the preset threshold or the transmission rate of the first Wi-Fi network is lower than the second preset threshold.
  • the terminal device can initiate scanning when the quality of the first Wi-Fi network is poor or the transmission rate of the first Wi-Fi network is too low.
  • the first preset threshold and the second preset threshold may be one or more.
  • the first preset threshold and the second preset threshold may correspond to frequency bands of the first Wi-Fi network.
  • the foregoing method further includes: the foregoing terminal device updates the network information to the foregoing second Wi-Fi network information.
  • the terminal device can update its network information to information of the second Wi-Fi network. For example, after the terminal device establishes a Wi-Fi connection with the second Wi-Fi network of the access point device, the terminal device may update the name of the network connection in the notification interface to the name of the second Wi-Fi network.
  • a method for network switching includes: establishing a connection between a second wireless fidelity Wi-Fi network of an access point device and a terminal device; wherein the second Wi-Fi network multiplexes
  • the terminal device communicates with the protocol stack link established by the first Wi-Fi network of the access point device, and the respective service set identifiers SSIDs of the second Wi-Fi network and the first Wi-Fi network are different.
  • the first Wi-Fi network is a wireless network connected before the terminal device switches to the second Wi-Fi network.
  • the second Wi-Fi network of the access point device communicates with the terminal device
  • the second Wi-Fi network of the access point device and the terminal device reuse the protocol established between the terminal device and the first Wi-Fi network Therefore, during the network switching process, the connection between the access point device and the terminal device has not been disconnected, and there will be no problems such as network disconnection of the terminal device, which can improve the user experience.
  • the frequency bands of the first Wi-Fi network and the second Wi-Fi network are different.
  • the terminal device can switch between networks in different frequency bands of the access point device, and the network connection between the terminal device and the access point device is not interrupted during the process of switching between networks in different frequency bands. It can improve the user experience.
  • the frequency band of the first Wi-Fi network is 2.4GHz, 5GHz or 6GHz
  • the frequency band of the second Wi-Fi network is 2.4GHz , 5GHz or 6GHz.
  • the access point device can support networks of multiple frequency bands
  • the terminal device can switch between networks of multiple frequency bands supported by the access point device, and when the terminal device switches between the networks of the access point device, The connection between the terminal device and the access point device is not disconnected, which can improve user experience.
  • This solution does not limit the specific frequency bands supported by the access point device.
  • the access point device may support more networks with more frequency bands.
  • the above-mentioned first Wi-Fi network is a home network
  • the above-mentioned second Wi-Fi network is a guest network
  • the above-mentioned first Wi-Fi network is a guest network
  • the Fi network is a guest network
  • the above-mentioned second Wi-Fi network is a home network.
  • the access point device can support multiple types of networks
  • the terminal device can switch between the home network of the access point device and the guest network, and in the process of switching between the home network and the guest network, the terminal device The connection between the device and the access point device is not disconnected, which can improve the user experience.
  • the frequency bands of the home network and the guest network may be the same or different.
  • the above method further includes: the access point device receiving a first notification message from the terminal device, where the first notification message is used to indicate that the terminal device is in a low power consumption mode; the access point device caches the first data of the terminal device through the first Wi-Fi network based on the first notification message . Based on this solution, through the access point device receiving the first notification message indicating that the terminal device is in the low power consumption mode, the access point device can cache the data of the terminal device, thereby avoiding the access caused by the poor first Wi-Fi network.
  • the above method further includes: the above-mentioned access point device relocates the above-mentioned first data from the above-mentioned first Wi-Fi network to the above-mentioned second Wi-Fi network -Fi network; the access point device sends the first data to the terminal device through the second Wi-Fi network.
  • the access point device can relocate the data cached through the original network (the first Wi-Fi network) to the new network (the second Wi-Fi network), and send the data through the second Wi-Fi network, Therefore, after the terminal device switches the network, the data of the terminal device will not be lost, so as to ensure the normal communication of the terminal device, and further improve the user experience.
  • a terminal device in a third aspect of the embodiments of the present application, includes: a transceiver and a processor; wherein the processor is configured to detect a first Wi-Fi Wi-Fi connection in which the terminal device is connected to an access point device.
  • the network parameters of the Fi network if the network parameters of the first Wi-Fi network meet the preset conditions, the processor initiates scanning; if the processor scans the second Wi-Fi network of the access point device, and the terminal device is associated After passing through the second Wi-Fi network, the processor obtains the authentication information of the second Wi-Fi network; wherein, the respective service set identifiers SSIDs of the second Wi-Fi network and the first Wi-Fi network are different; based on the second Wi-Fi network For the authentication information of the Fi network, the processor accesses the second Wi-Fi network through the transceiver; the second Wi-Fi network reuses the terminal device to communicate with the established protocol stack link of the first Wi-Fi network.
  • the frequency bands of the first Wi-Fi network and the second Wi-Fi network are different.
  • the frequency band of the first Wi-Fi network is 2.4GHz, 5GHz or 6GHz
  • the frequency band of the second Wi-Fi network is 2.4GHz , 5GHz or 6GHz.
  • the above-mentioned first Wi-Fi network is a home network
  • the above-mentioned second Wi-Fi network is a guest network
  • the above-mentioned first Wi-Fi network is a guest network
  • the Fi network is a guest network
  • the above-mentioned second Wi-Fi network is a home network.
  • the above transceiver is further configured to: send a first notification message to the foregoing access point device, where the first notification message is used to indicate the foregoing The end device is in a low power mode.
  • the transceiver is further configured to: receive the first data sent by the access point device through the second Wi-Fi network, the The first data is data cached by the access point device through the first Wi-Fi network.
  • the above-mentioned processor is specifically configured to: initiate scanning based on the channel information of the above-mentioned second Wi-Fi network.
  • the network parameters of the first Wi-Fi network meeting the preset conditions include: the quality of the first Wi-Fi network is lower than the first Wi-Fi network.
  • the preset threshold or the transmission rate of the first Wi-Fi network is lower than the second preset threshold.
  • the above-mentioned processor is further configured to: update the network information to the above-mentioned information of the second Wi-Fi network.
  • a fourth aspect of the embodiments of the present application provides an access point device, where the access point device includes: a first transceiver and a processor; wherein the first transceiver is a second wireless fidelity device of the access point device A transceiver for sending and receiving information on a Wi-Fi network; a processor for establishing a connection with a terminal device through the first transceiver; wherein the second Wi-Fi network multiplexes the first Wi-Fi network between the terminal device and the access point device
  • the established protocol stack link performs communication, and the respective service set identifiers SSIDs of the second Wi-Fi network and the first Wi-Fi network are different.
  • the frequency bands of the first Wi-Fi network and the second Wi-Fi network are different.
  • the frequency band of the first Wi-Fi network is 2.4GHz, 5GHz or 6GHz
  • the frequency band of the second Wi-Fi network is 2.4GHz , 5GHz or 6GHz.
  • the above-mentioned first Wi-Fi network is a home network
  • the above-mentioned second Wi-Fi network is a guest network
  • the above-mentioned first Wi-Fi network is a guest network
  • the Fi network is a guest network
  • the above-mentioned second Wi-Fi network is a home network.
  • the access point device further includes a second transceiver, and the second transceiver is the first Wi-Fi network of the access point device a transceiver for sending and receiving information; a second transceiver for receiving a first notification message from the terminal device, where the first notification message is used to indicate that the terminal device is in a low power consumption mode; the processor is further configured to based on the first notification message , and buffer the first data of the terminal device through the second transceiver.
  • the above-mentioned processor is further configured to relocate the above-mentioned first data from the above-mentioned first Wi-Fi network to the above-mentioned second Wi-Fi network ;
  • the above-mentioned first transceiver is further configured to send the above-mentioned first data to the above-mentioned terminal device.
  • the embodiments of the present application provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute the above-mentioned first aspect To the network switching method described in any one of the second aspect.
  • the embodiments of the present application provide a computer program product including instructions, which, when run on a computer, enables the computer to execute any one of the above-mentioned first to second aspects. Network switching method.
  • a seventh aspect of the embodiments of the present application provides a network switching system, where the network switching system includes a terminal device and an access point device, and the terminal device is configured to implement the network switching method described in any one of the first aspects above, The access point device is configured to implement the network switching method described in any one of the second aspect above.
  • a chip system in an eighth aspect of the embodiments of the present application, includes a processor and a memory, and computer program codes are stored in the memory; when the computer program codes are executed by the processor, any one of the above-mentioned computer program codes is implemented.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a network switching device in a ninth aspect of the embodiments of the present application, includes: a processor and a memory, and instructions are stored in the memory; when the instructions are executed by the processor, the instructions are used to enable the network switching device to implement any of the above The network switching method described in one aspect.
  • a tenth aspect of the embodiments of the present application provides a network switching device, the device comprising: a memory for storing a computer program; a transceiver for receiving or sending radio signals; a processor for executing the computer program,
  • the electronic device is made to implement the network switching method according to any one of the above aspects.
  • FIG. 1 is a schematic diagram of an application scenario of a dual-band router provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a network switching method provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a simulation result of a network switching method provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural composition diagram of a communication device provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another network switching method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a simulation result of another network switching method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another network switching method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another network switching method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another network switching method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the composition of a network switching apparatus provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the composition of another network switching apparatus according to an embodiment of the present application.
  • At least one (a) of a, b or c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b and c can be single or multiple.
  • words such as “first” and “second” are used to distinguish the same or similar items that have basically the same function and effect, Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order.
  • first and second in the second Wi-Fi network in the embodiments of the present application are only used to distinguish different wireless networks.
  • the descriptions of the first, second, etc. appearing in the embodiments of the present application are only used for illustration and distinguishing the description objects, and have no order. any limitations of the examples.
  • Existing access point devices can support multiple frequency bands at the same time, and even the same frequency band can support multiple networks.
  • an access point device can support 2.4GHz and 5GHz.
  • the access point device may support a home network and a guest network, and the frequency bands of the home network and the guest network may be the same or different.
  • the access point device in this embodiment of the present application may be a router, or may be any device that supports multiple frequency bands or multiple networks.
  • the present application does not limit the specific type of the access point device.
  • multiple mobile terminal devices eg, computers, mobile phones, tablets, etc.
  • Differences in frequency bands, bandwidth, interference, and wall penetration performance of different networks may result in different user experiences when terminal devices connect to different networks. For example, when the terminal device is close to the router, the bandwidth of the 5GHz network is large, the delay is low, and the user experience is better.
  • the terminal device is far from the router, due to the large attenuation of the 5GHz network through the wall, the signal will be poor during long-distance transmission.
  • the 2.4GHz network has a relatively small attenuation through the wall and a large coverage area, and the user experience is relatively good during long-distance transmission. Therefore, when the terminal device moves, the user experience may be poor due to reasons such as the currently connected network signal being poor.
  • the terminal device can be switched to the network with better experience through 11kvr or private roaming. For example, in a scenario where the 2.4GHz network of the router and the SSID of the 5GHz network are the same (the router supports dual-band integration), if the terminal device is far away from the router and the signal of the 5GHz network is poor, the terminal device can be switched by roaming. to a 2.4GHz network.
  • the terminal device may be disconnected when the network signal is poor, or it may be connected to the poor network. the network is disconnected and then connect to a wireless network with a better signal. For example, if the router supports multiple wireless networks, and the SSIDs of the multiple wireless networks are different, the terminal device may be disconnected from the network when the signal of the currently connected network is poor, or it may be disconnected from the current network and then connected to the router. other networks.
  • the frequency bands supported by the dual-band router are 2.4GHz and 5GHz.
  • the SSIDs of the 2.4GHz network and the 5GHz network are different.
  • the SSID of the 5GHz network is xxxx_5G, and the SSID is xxxx.
  • the 5GHz network has large bandwidth, low latency, and better user experience, and the terminal device is connected to the 5GHz network.
  • the signal of the 5GHz network is getting worse and worse due to the large attenuation of the 5GHz network through the wall.
  • the application of the terminal device will prompt a network abnormality message such as "Unable to connect to the server".
  • the received signal strength (RSSI) for example, -80dbm
  • the RSSI of the 2.4GHz network for example, -60dbm
  • the poor signal of the 5GHz network causes the network connection of the terminal device to be disconnected.
  • the 2.4GHz network of the router has stronger ability to penetrate the wall, and the signal strength is still strong, and the terminal device can continue to connect to the 2.4GHz network of the router and continue to use.
  • the terminal device in the process of switching the terminal device from the 5GHz network to the 2.4GHz network, it needs to re-acquire the IP address and establish the protocol stack link in order to carry out application-level data communication. Therefore, the terminal device is disconnected during the network switching process, resulting in user experience. poor.
  • Figure 2 is a network switching method.
  • the router supports network 1 (eg, 5GHz network) and network 2 (eg, 2.4GHz network), the SSIDs of network 1 and network 2 are different, and the terminal device 1 is connected, and the terminal device has been associated with network 2 (the terminal device saves the user name and password of network 2).
  • the terminal device sends a disassociation frame to the network 1 of the router to notify the router to disconnect.
  • the router After the router receives the disassociation frame from the terminal device, it deletes the information related to the terminal device, such as data information.
  • the terminal device After the terminal device is disconnected from the network 1, it scans the signal of the network 2 and establishes a new connection with the network 2. Re-acquire the IP address on the network 2, access the network 2, and the terminal device updates the network information. At the same time, the router updates the information of the terminal device to determine the access of the new device.
  • the terminal device After the terminal device sends the disassociation frame, the terminal device will be disconnected from the network 1.
  • the application of the terminal device may prompt a prompt message such as "cannot connect to the server".
  • Wi-Fi wireless-fidelity
  • the average throughput of the network is 30Mbits/sec. It will be disconnected. After the network is disconnected, the connection of the iperf tool is also disconnected. You need to re-establish the Wi-Fi connection to communicate normally. That is to say, in the process of switching from a 5GHz network to a 2.4GHz network in this method, the terminal device needs to be disconnected, and when the terminal device is connected again, it needs to re-acquire an IP address and establish a protocol stack link, which affects the user experience.
  • the embodiment of the present application provides a A network switching method, which does not need to re-acquire an IP address during the network switching process, and can improve user experience.
  • the terminal device may be a tablet computer, a desktop computer, a laptop computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, Netbooks, personal digital assistants (personal digital assistants, PDAs), mobile phones and other terminal devices that can be connected to the Internet.
  • the access point device in this embodiment of the present application may be a device that supports multiple frequency bands or multiple networks, such as a router.
  • the specific forms of the terminal device and the access point device are not particularly limited in the embodiments of the present application, which are merely exemplary descriptions herein.
  • both the terminal device and the access point device may adopt the composition structure shown in FIG. 4 , or include the components shown in FIG. 4 .
  • FIG. 4 is a schematic diagram of the composition of a communication apparatus 400 according to an embodiment of the present application.
  • the communication apparatus 400 may include at least a processor 401, a memory 402, a transceiver 403, and a communication bus 404.
  • the processor 401 is the control center of the communication device 400, and may be a processor or a general term for multiple processing elements.
  • the processor 401 is a central processing unit (CPU), may also be a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or is configured to implement one or more integrated circuits of the embodiments of the present application , for example: one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA).
  • the processor 401 can execute various functions of the communication device by running or executing software programs stored in the memory 402 and calling data stored in the memory 402 .
  • the processor 401 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 4 .
  • the communication apparatus 400 may include multiple processors, such as the processor 401 and the processor 405 shown in FIG. 4 .
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • a processor herein may refer to one or more communication devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the memory 402 may be read-only memory (ROM) or other type of static storage communication device that can store static information and instructions, random access memory (RAM) or other type of static storage communication device that can store information and instructions.
  • Type of dynamic storage communication device it can also be Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disk storage, Optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage communication devices, or capable of carrying or storing desired program code in the form of instructions or data structures and Any other medium that can be accessed by a computer, but is not limited to this.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • Optical disc storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • the memory 402 can exist independently and is connected to the processor 401 through the communication bus 404 .
  • the memory 402 may also be integrated with the processor 401 .
  • the memory 402 is used for storing the software program for executing the solution of the present application, and the execution is controlled by the processor 401 .
  • Transceiver 403 for communication with other devices such as access points or stations.
  • the transceiver 403 can also be used to communicate with a communication network, such as an Ethernet, a radio access network (RAN), a wireless local area network (WLAN), and the like.
  • the transceiver 403 may include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function.
  • the communication bus 404 may be an industry standard architecture (ISA) bus, an external communication device interconnect (peripheral component, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like.
  • ISA industry standard architecture
  • PCI peripheral component
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 4, but it does not mean that there is only one bus or one type of bus.
  • the terminal device and the access point device may include more or less components than those shown in FIG. 4 , which is only an exemplary illustration.
  • this method may comprise the following steps:
  • the terminal device detects network parameters of the first Wi-Fi network in which the terminal device is connected to the access point device.
  • the access point device may support wireless networks of multiple frequency bands or support multiple wireless networks of different types.
  • the above-mentioned first Wi-Fi network may be any frequency band or type of wireless network supported by the access point device.
  • the first Wi-Fi network may be a 2.4GHz network or a 5GHz network.
  • the network parameters of the first Wi-Fi network may include parameters such as the quality of the first Wi-Fi network and the transmission rate of the first Wi-Fi network.
  • This embodiment of the present application does not limit the specific content of the network parameters of the first Wi-Fi network, which is only an exemplary description here.
  • the network parameters of the first Wi-Fi network connected to the terminal device satisfying the preset condition include: the quality of the first Wi-Fi network connected to the terminal device is lower than the first preset threshold, or, the quality of the first Wi-Fi network connected by the terminal device The transmission rate of the first Wi-Fi network is lower than the second preset threshold.
  • the terminal device can actively initiate scanning.
  • the terminal device has been connected to a 5GHz network, when the network quality of the 5GHz network to which the terminal device is connected is poor, the terminal device can actively initiate scanning.
  • the terminal device has been connected to the 2.4GHz network, when the transmission rate of the 2.4GHz network to which the terminal device is connected is too low, the terminal device can also actively initiate scanning.
  • the embodiments of the present application do not limit the specific preset conditions for the terminal to initiate scanning, which are merely illustrative.
  • the foregoing first preset threshold may be one or more.
  • the first preset threshold may correspond to a frequency band or a network type of the first Wi-Fi network.
  • the first preset threshold corresponding to when the first Wi-Fi network connected to the terminal device is a 2.4GHz network may be different from the first preset threshold corresponding to when the first Wi-Fi network is a 5GHz network.
  • the above-mentioned second preset threshold may be one or more.
  • the second preset threshold may correspond to a frequency band or a network type of the first Wi-Fi network.
  • the second preset threshold corresponding to when the first Wi-Fi network connected by the terminal device is a home network may also be different from the second preset threshold corresponding to when the first Wi-Fi network is a guest network.
  • the user when the user understands the influence of factors such as frequency bands, bandwidth, interference, and wall penetration performance of different networks on the network speed, and when the terminal device is far away from the router, the user can also actively trigger the terminal device to initiate scanning. For example, if the terminal device is connected to a 5GHz network and has been associated with a 2.4GHz network, and the terminal device is far away from the router, if the user actively clicks on the 2.4GHz network to switch the network from the 5GHz network to the 2.4GHz network, the terminal device will In response to an action of a user triggering a network switch, a scan may be actively initiated.
  • factors such as frequency bands, bandwidth, interference, and wall penetration performance of different networks on the network speed
  • the terminal device when the terminal device is far away from the router, the user can also actively trigger the terminal device to initiate scanning. For example, if the terminal device is connected to a 5GHz network and has been associated with a 2.4GHz network, and the terminal device is far away from the router, if the user actively clicks on the
  • the above-mentioned terminal when the above-mentioned terminal initiates scanning, it may scan all connectable wireless networks, or may only scan other networks of the access point device.
  • the scanning initiated by the terminal device may include: the terminal device is based on channel information of the second Wi-Fi network. to initiate a scan.
  • the terminal device may only scan the channel of the second Wi-Fi network to determine whether the second Wi-Fi network exists.
  • the terminal device has been associated with the second Wi-Fi network, and the terminal device may scan the second Wi-Fi network based on the channel information of the second Wi-Fi network stored by the terminal device. For example, if the channel information of the second Wi-Fi network stored in the terminal device is channel 6, when the terminal device initiates scanning, it can scan only channel 6 to determine whether there is a network in channel 6, thereby saving scanning time and improving user experience. experience.
  • a scan may be initiated to determine whether there are other connectable wireless networks.
  • the terminal device scans the second Wi-Fi network of the access point device, and the terminal device has been associated with the second Wi-Fi network, the terminal device obtains authentication information of the second Wi-Fi network.
  • the respective service set identifiers SSIDs of the second Wi-Fi network and the first Wi-Fi network are different.
  • the second Wi-Fi network scanned by the terminal device and the first Wi-Fi network currently connected to the terminal device are two Wi-Fi networks of the same access point device, and the two Wi-Fi networks are The SSID of the Fi network is different.
  • the multi-frequency router supports a first Wi-Fi network and a second Wi-Fi network, and the networks of the first Wi-Fi network and the second Wi-Fi network The names are not the same.
  • the terminal device has been associated with the second Wi-Fi network, including information such as the network name, password, and channel of the second Wi-Fi network that have been saved in the terminal device. Since the terminal device has been associated with the second Wi-Fi network, when the terminal device scans the second Wi-Fi network, it can access the second Wi-Fi network based on the authentication information of the second Wi-Fi network.
  • the authentication information of the second Wi-Fi network includes authentication information such as a network name and password of the second Wi-Fi network.
  • This embodiment of the present application does not limit the specific content of the authentication information of the second Wi-Fi network, which is only an exemplary description here. It can be understood that the authentication information of the second Wi-Fi network may include information required when the terminal device accesses the second Wi-Fi network.
  • the above-mentioned access point device may be a multi-frequency router, and the multi-frequency router may support one or more networks in the same frequency band.
  • the above-mentioned first Wi-Fi network and second Wi-Fi network may be networks in different frequency bands in the multi-frequency router, or may be different types of networks in the same frequency band in the multi-frequency router.
  • the frequency band of the first Wi-Fi network may be 2.4GHz, 5GHz or 6GHz
  • the frequency band of the second Wi-Fi network may be 2.4GHz, 5GHz or 6GHz.
  • the first Wi-Fi network and the second Wi-Fi network may be networks in different frequency bands.
  • the frequency band of the first Wi-Fi network may be 2.4GHz
  • the frequency band of the second Wi-Fi network may be 5GHz
  • the frequency band of the first Wi-Fi network may be 5GHz
  • the frequency band of the second Wi-Fi network may be 2.4GHz.
  • This embodiment of the present application does not limit the number of frequency bands and frequency bands supported by the access point device.
  • the access point device may also support other subsequent extended frequency bands.
  • the access point device supports 7 GHz or For other subsequent extended frequency bands, all frequency band types supported by the access point device can fall within the protection scope of this application.
  • the access point device supports 2.4GHz and 5GHz for exemplary description.
  • the first Wi-Fi network and the second Wi-Fi network may be different types of networks.
  • the first Wi-Fi network may be a home network, and the second Wi-Fi network may be a guest network; or, the first Wi-Fi network may be a guest network, and the second Wi-Fi network may be a home network.
  • the frequency bands of the home network and the guest network may be the same or different, which is not limited in this application.
  • the difference between the media access control (media access control, MAC) address of the second Wi-Fi network scanned by the above-mentioned terminal device and the MAC address of the first Wi-Fi network is small.
  • the MAC addresses of the second Wi-Fi network and the first Wi-Fi network are the same in 5 bytes.
  • the signal strength of the second Wi-Fi network scanned by the terminal device is relatively close to the signal strength of the first Wi-Fi network.
  • the difference between the signal strengths of the second Wi-Fi network and the first Wi-Fi network is within 20dbm.
  • the quality of the second Wi-Fi network scanned in the above step S503 may be higher than the quality of the first Wi-Fi network, or the signal strength of the second Wi-Fi network may be higher than that of the first Wi-Fi network.
  • the transmission rate of the second Wi-Fi network may be higher than the transmission rate of the first Wi-Fi network.
  • the terminal device will continue to maintain the connection with the first Wi-Fi network and will not trigger switching to the second Wi-Fi network. For example, the terminal device scans the second Wi-Fi network, but because the terminal device has not been connected to the second Wi-Fi network, the second Wi-Fi network is not saved in the terminal device, even if the terminal device scans the second Wi-Fi network The Wi-Fi network will not trigger network switching, and will still remain connected to the first Wi-Fi network.
  • the terminal device does not scan the second Wi-Fi network of the access point device, but scans the third Wi-Fi network, and the third Wi-Fi network is the same as the first Wi-Fi network. If the Fi network is a wireless network of different access point devices, then the terminal device remains connected to the first Wi-Fi network and will not trigger network switching.
  • the terminal device accesses the second Wi-Fi network.
  • the second Wi-Fi network multiplexes the terminal device to communicate with the established protocol stack link of the first Wi-Fi network.
  • the terminal device can access the second Wi-Fi network.
  • connecting the terminal device to the second Wi-Fi network may include: a process of establishing a Wi-Fi connection between the terminal device and the second Wi-Fi network through authentication, association, and key exchange, etc., an embodiment of the present application
  • the specific flow and steps of establishing a Wi-Fi connection will not be described in detail, and reference may be made to related content in the prior art for details.
  • the terminal device when the terminal device accesses the second Wi-Fi network, it may access the second Wi-Fi network in a re-association manner, or may access the second Wi-Fi network in an association manner. For example, when the terminal device accesses the second Wi-Fi network, it may send a re-association frame or an association frame to the access point device, requesting to establish a Wi-Fi connection with the second Wi-Fi network.
  • the present application does not limit the specific manner in which the terminal device accesses the second Wi-Fi network, which is only an exemplary description here.
  • the terminal device Before the terminal device accesses the second Wi-Fi network of the access point device, the terminal device does not send a disassociation request to the access point device, so the connection between the terminal device and the first Wi-Fi network of the access point device The connection is not disconnected, so when the terminal device accesses the second Wi-Fi network, it does not need to obtain an IP address again, and the second Wi-Fi network can reuse the protocol stack chain that the terminal device and the first Wi-Fi network have established. way to communicate. That is to say, when the terminal device accesses the second Wi-Fi network, it only needs to perform the frame interaction of the Wi-Fi network access process, and does not need to obtain the IP address again.
  • the terminal device communicates with the second Wi-Fi network, the multiplexed The established protocol stack link between the terminal device and the first Wi-Fi network is established, so in the process of switching networks, the network between the terminal device and the access point device has not been disconnected.
  • the terminal device when the quality of the first Wi-Fi network of the access point device to which the terminal device is connected is poor, since the terminal device does not send a disassociation frame to the access point device in this embodiment of the present application to request to disconnect the network, The network connection between the terminal device and the access point device has not been disconnected, so the terminal device does not need to obtain an IP address again. Therefore, after the terminal device accesses the second Wi-Fi network of the access point device, the terminal device and the second The Wi-Fi network may communicate on a protocol stack link that has been established between the terminal device and the first Wi-Fi network.
  • the access point device as a dual-band router
  • the dual-band router supports 2.4GHz network and 5GHz network
  • the first Wi-Fi network is a 5GHz network
  • the second Wi-Fi network is a 2.4GHz network.
  • a GHz network establishes a Wi-Fi connection, it only needs to perform frame interaction in the Wi-Fi network access process, and does not need to re-obtain an IP address.
  • the terminal device when the terminal device communicates through the 2.4GHz network, it can reuse the protocol stack link that has been established when the terminal device communicates with the 5GHz network, that is, the process of switching the network of the terminal device from the 5GHz network of the dual-band router to the 2.4GHz network of the dual-band router , only the Wi-Fi connection needs to be re-established, the IP address does not need to be re-acquired, and the protocol stack link does not need to be re-established, and communication can continue on the original protocol stack link.
  • the terminal device can be connected to a wireless network
  • the connection between the terminal device and the second Wi-Fi network is established, the connection between the terminal device and the first Wi-Fi network is disconnected.
  • the wireless network connected by the terminal device is switched from the first Wi-Fi network of the access point device to the second Wi-Fi network of the access point device, the network connection between the terminal device and the access point device is always Not disconnected, just switched Wi-Fi channels. Therefore, for the access point device, when the terminal device establishes a Wi-Fi connection with the second Wi-Fi network, the terminal device is still connected as an old device, and the related information of the terminal device is still retained.
  • the dual-band router supports 5GHz network and 2.4GHz network
  • the first Wi-Fi network is a 5GHz network
  • the SSID of the 5GHz network is XXXX_5G
  • the second Wi-Fi network is a 2.4GHz network
  • the SSID of the 2.4GHz network is XXXX as an example.
  • the test tool iperf when the terminal device is switched from the 5GHz network of the dual-band router to the 2.4GHz network of the dual-band router, the test tool iperf can still be maintained before and after the network switch. It communicates normally and has a certain throughput of data, and there is no problem of network disconnection of the terminal device.
  • the terminal when the network parameters of the first Wi-Fi network of the access point device connected to the terminal device meet the preset conditions, the terminal initiates scanning, and when the terminal scans the access point If the second Wi-Fi network of the device and the terminal device has been associated with the second Wi-Fi network, the terminal device obtains the authentication information of the second Wi-Fi network and accesses the second Wi-Fi network. Therefore, in this solution, when the quality of the first Wi-Fi network of the access point device to which the terminal device is connected is poor, since the terminal device does not send a disassociation frame to the access point device to request to disconnect the network, the terminal device and the access point device are not connected to the network. The network connection between the point devices has not been disconnected.
  • the terminal device accesses the second Wi-Fi network, it does not need to obtain the IP address again, and the terminal device and the second Wi-Fi network can be on the protocol stack link that has been established between the terminal device and the first Wi-Fi network. to communicate.
  • the terminal device needs to disconnect in the process of switching networks, resulting in the need to re-acquire an IP address and establish a protocol stack link when the terminal device is reconnected, the solution in the embodiment of the present application does not appear.
  • the network of the terminal device is disconnected, there is no need to obtain the IP address again, which can improve the user experience.
  • the above method may further include steps S505-S508.
  • the terminal device sends a first notification message to the access point device.
  • the first notification message is used to indicate that the terminal device is in a low power consumption mode.
  • the first notification message is used to indicate that the terminal device is in a sleep state.
  • the terminal device may send a first notification message indicating that the terminal device is in a low power consumption mode to the access point device, so that the access point device is in a low power consumption mode.
  • the in-point device caches the data of the terminal device through the first Wi-Fi network.
  • the first notification message indicating that the terminal device is in the low power consumption mode is sent to the access point device by the terminal device, so that the access point device can cache the data of the terminal device, so as to avoid the data of the terminal device due to the first Wi-Fi network.
  • the problem is that when the data sent by the access point device to the terminal device for many times is not received by the terminal device, the access point device actively kicks off the terminal and disconnects the connection, which can further ensure that the terminal device and the access point device are disconnected. The network connection between them will not be disconnected.
  • the access point device receives the first notification message.
  • the access point device receives a first notification message indicating that the terminal device is in a low power consumption mode.
  • the access point device caches the first data of the terminal device through the first Wi-Fi network.
  • the access point device caches the data of the terminal device through the first Wi-Fi network connected to the terminal device.
  • the dual-band router supports 2.4GHz network and 5GHz network
  • the first Wi-Fi network is a 5GHz network
  • the second Wi-Fi network is a 2.4GHz network.
  • the terminal device scans the 2.4GHz network
  • it sends a first notification message to the dual-band router.
  • the dual-band router knows that the terminal device is in low power consumption mode, it can cache the data of the terminal device through the 5GHz network.
  • the terminal device updates the network information to the information of the second Wi-Fi network.
  • the terminal device accesses the second Wi-Fi network
  • the network currently connected to the terminal device is the second Wi-Fi network
  • the terminal device can update the network information to information of the second Wi-Fi network.
  • the terminal device updates the network connection name in the notification interface to the name of the second Wi-Fi network.
  • the dual-band router supports 5GHz network and 2.4GHz network
  • the first Wi-Fi network is a 5GHz network
  • the SSID of the 5GHz network is XXXX_5G
  • the second Wi-Fi network is a 2.4GHz network
  • the SSID of the 2.4GHz network is XXXXX
  • the terminal device updates the network name of the wireless LAN to the SSID of the 2.4GHz network (for example, XXXX).
  • the terminal device updates the network information to the information of the second Wi-Fi network.
  • the terminal device fails to access the second Wi-Fi network, the terminal device falls back to the first Wi-Fi network and accesses the first Wi-Fi network.
  • the terminal device may first send a first notification message to the access point device, and then access the second Wi-Fi network.
  • the terminal device switches from the first Wi-Fi network of the access point device to the second Wi-Fi network of the access point device, because the terminal device does not send the data to the access point device Disassociation request, so in the process of switching the network, the terminal device does not need to re-acquire the IP address, the network connection between the terminal device and the access point device has not been disconnected, and there will be no problems such as the network disconnection of the terminal device. , which can improve the user experience.
  • the terminal device sends a first notification message indicating that the terminal device is in a low power consumption mode to the access point device, so that the access point device can cache the data of the terminal device, so as to avoid the poor first Wi-Fi network causing the
  • the problem that the access point device actively kicks off the terminal and disconnects the terminal occurs, which can further ensure the connection between the terminal device and the access point device.
  • the network connection will not be disconnected.
  • the embodiment of the present application further provides a network switching method.
  • the method may also Steps S509-S511 are included.
  • the access point device relocates the first data from the first Wi-Fi network to the second Wi-Fi network.
  • the first data is the data of the terminal device cached by the access point device through the first Wi-Fi network in the foregoing step S507.
  • the access point device may manage data of multiple networks, and the multiple networks may be the entire network of the access point device, or may be part of the network of the access point device.
  • the dual-band router supports a 2.4GHz network and a 5GHz network, and the network of the terminal device is switched from the 5GHz network of the dual-band router to the 2.4GHz network.
  • the dual-band router can relocate the data of the terminal device cached in the 5GHz network to the 2.4GHz network.
  • the access point device sends the first data to the terminal device through the second Wi-Fi network.
  • the access point device can send the data of the terminal device buffered in the 5GHz network to the terminal device through the 2.4GHz network, so that the terminal device can switch the network after the network is switched. , will not lose packets, ensure complete normal communication, and further improve the user experience.
  • the terminal device receives the first data.
  • the terminal device after the terminal device switches networks, it can receive data cached by the access point device in the original network, so that the data of the terminal device will not be lost after the network switch, ensuring normal communication of the terminal device, and improving user experience.
  • the terminal device switches from the first Wi-Fi network of the access point device to the second Wi-Fi network of the access point device, because the terminal device does not send the data to the access point device Disassociation request, so in the process of switching the network, the terminal device does not need to re-acquire the IP address, the network connection between the terminal device and the access point device has not been disconnected, and there will be no problems such as the network disconnection of the terminal device. , which can improve the user experience.
  • the terminal device sends a first notification message indicating that the terminal device is in a low power consumption mode to the access point device, so that the access point device can cache the data of the terminal device, so as to avoid the poor first Wi-Fi network causing the
  • the access point device can cache the data of the terminal device, so as to avoid the poor first Wi-Fi network causing the
  • the problem that the access point device actively kicks off the terminal and disconnects the terminal occurs, which can further ensure the connection between the terminal device and the access point device.
  • the network connection will not be disconnected.
  • the access point device supports the management of data of multiple Wi-Fi networks, after the terminal device accesses the second Wi-Fi, the access point device can cache it through the original network (the first Wi-Fi network).
  • the data is migrated to the new network (the second Wi-Fi network), and the data is sent through the second Wi-Fi network, so that the terminal device can achieve zero packet loss after switching the network, ensure complete normal communication, and further Improve user experience.
  • FIG. 9 is a network switching method provided by an embodiment of the present application.
  • the method takes a terminal device as an execution subject, and the method may include the following steps:
  • the terminal device detects network parameters of the first Wi-Fi network in which the terminal device is connected to the access point device.
  • the terminal device initiates scanning.
  • the terminal device determines whether the second Wi-Fi network and the first Wi-Fi network are wireless networks of the same access point device.
  • the terminal device determines that the second Wi-Fi network and the first Wi-Fi network are wireless networks of the same access point device, the terminal device continues to perform step S904.
  • the terminal device determines that the second Wi-Fi network and the first Wi-Fi network are wireless networks of different access point devices, the terminal device maintains the connection with the first Wi-Fi network and does not trigger network switching.
  • the terminal device determines whether it has been associated with the second Wi-Fi network.
  • the terminal device determines that it has been associated with the second Wi-Fi network, the terminal device continues to perform step S905.
  • the terminal device determines that it has not been associated with the second Wi-Fi network, the terminal device maintains the connection with the first Wi-Fi network and does not trigger network switching.
  • the terminal device sends a first notification message to the access point device.
  • step S905 reference may be made to the implementation of the foregoing step S505, and details are not described herein again.
  • the terminal device acquires the authentication information of the second Wi-Fi, and accesses the second Wi-Fi network based on the authentication information of the second Wi-Fi.
  • step S906 reference may be made to the implementation manner of the foregoing steps S503-S504, and details are not described herein again.
  • the terminal device determines whether to successfully access the second Wi-Fi network.
  • the terminal device determines that it has successfully accessed the second Wi-Fi network, the terminal device continues to perform step S908. In the case where the terminal device determines that it has not successfully accessed the second Wi-Fi network, the terminal device falls back to the first Wi-Fi network and accesses the first Wi-Fi network.
  • the second Wi-Fi network of the terminal reuses the terminal device to communicate with the protocol stack link established by the first Wi-Fi network.
  • the terminal device updates the network information to the information of the second Wi-Fi network.
  • step S908 reference may be made to the implementation of the foregoing step S508, and details are not described herein again.
  • the terminal device receives the first data.
  • step S909 reference may be made to the implementation of the foregoing step S511, and details are not described herein again.
  • the access point device may relocate the first data of the terminal device cached in the first Wi-Fi network to the second Wi-Fi network, And send the first data to the terminal device through the second Wi-Fi network, and the terminal device can receive the first data, so that the terminal device will not lose packets after network switching, ensure complete normal communication, and further improve the user experience. experience.
  • FIG. 9 is only a schematic illustration.
  • the terminal device switches from the first Wi-Fi network of the access point device to the second Wi-Fi network of the access point device, because the terminal device does not send the data to the access point device Disassociation request, so in the process of switching the network, the terminal device does not need to re-acquire the IP address, the network connection between the terminal device and the access point device has not been disconnected, and there will be no problems such as the network disconnection of the terminal device. , which can improve the user experience.
  • the terminal device sends a first notification message indicating that the terminal device is in a low power consumption mode to the access point device, so that the access point device can cache the data of the terminal device, so as to avoid the poor first Wi-Fi network causing the
  • the terminal device can receive the data cached by the access point device in the first Wi-Fi network, so that the terminal device can achieve zero packet loss after switching the network, ensure complete normal communication, and further improve the user experience.
  • the computer includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in the form of a combination of hardware and computer software. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.
  • the computer can be divided into functional modules according to the above method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiment of the present invention is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 10 shows a schematic structural diagram of a network switching apparatus 1000.
  • the network switching apparatus 1000 may be the terminal device in the foregoing embodiment, or may be a chip in the foregoing terminal device.
  • the network switching apparatus 1000 includes: a processing unit 1001 and a transceiver unit 1002 .
  • the transceiver unit 1002 may be configured to support communication between the network switching apparatus 1000 and the access point device in the above embodiment.
  • the processing unit 1001 is used to control and manage the actions of the above-mentioned terminal equipment, and is used to perform the processing performed by the terminal equipment in the above-mentioned embodiments.
  • the processing unit 1001 can also perform storage
  • the programs or instructions in the memory enable the network switching apparatus 1000 to implement the methods and functions involved in any of the foregoing embodiments.
  • processing unit 1001 may be configured to perform, for example, steps S501-S504 in FIG. 5, or, steps S508 in FIG. Other procedures for the techniques described herein.
  • Transceiver unit 1002 may be configured to perform, for example, step S505 in FIG. 7, or step S511 in FIG. 8, steps S905 and S909 in FIG. 9, and/or other processes for the techniques described herein.
  • step S505 in FIG. 7, or step S511 in FIG. 8 steps S905 and S909 in FIG. 9
  • all relevant contents of the steps involved in the above method embodiments can be cited in the functional descriptions of the corresponding functional modules, which will not be repeated here.
  • the function of the processing unit 1001 may be performed by a processor, and the function of the transceiver unit 1002 may be performed by a transceiver (transmitter/receiver) and/or a communication interface, wherein the processing unit 1001 may It is embedded in or independent of the processor of the network switching device 1000 in the form of hardware, and can also be stored in the memory of the network switching device 1000 in the form of software, so that the processor can call and execute the operations corresponding to the above functional units.
  • FIG. 11 shows a schematic structural diagram of a network switching apparatus 1100.
  • the network switching apparatus may be the above-mentioned access point equipment, or may be a chip in the above-mentioned access point equipment, and the network switching apparatus 1100 may be used to implement any of the above-mentioned Embodiments relate to methods and functions of an access point device (or router).
  • the network switching apparatus 1100 includes: a processing unit 1101 , a first transceiving unit 1102 and a second transceiving unit 1103 .
  • the first transceiving unit 1102 is a transceiving unit for transceiving information on the second Wi-Fi network of the access point device
  • the second transceiving unit 1103 is a transceiving unit for transceiving information on the first Wi-Fi network of the access point device.
  • the first transceiving unit 1102 and the second transceiving unit 1103 may be used to support communication between the access point device and the terminal device in the foregoing embodiment.
  • the processing unit 1101 is used to control and manage the actions of the access point device, and is used to perform the processing performed by the access point device in the above embodiment.
  • the processing unit 1101 includes a storage unit, the processing unit 1101
  • the programs or instructions stored in the memory may also be executed, so that the network switching apparatus 1100 implements the methods and functions involved in any of the foregoing embodiments.
  • the above-described processing unit 1101 may be configured to perform, for example, step S507 in FIG. 7 , or step S509 in FIG. 8 , and/or other processes for the techniques described herein.
  • the first transceiving unit 1102 may be used to perform, for example, step S510 in FIG. 8, and/or other processes for the techniques described herein.
  • the second transceiving unit 1103 may be used to perform, for example, step S506 in FIG. 7 , and/or other processes for the techniques described herein.
  • the functions of the processing unit 1101 may be performed by one or more processors, and the first transceiver unit 1102 or the second transceiver unit 1102 or the second transceiver may be performed by a transceiver (transmitter/receiver) and/or a communication interface.
  • the function of the unit 1103, wherein the processing unit 1101 may be embedded in or independent of the processor of the network switching device 1100 in the form of hardware, or may be stored in the memory of the network switching device 1100 in the form of software, so that the processor can call and execute The operations corresponding to the above functional units.
  • the functions of the above-mentioned processing unit 1101 may be performed by one or more processors.
  • the multiple processors can be respectively used to execute corresponding functions in different wireless networks.
  • the network switching apparatus 1100 may include a first processor and a second processor, the first processor and the second processor respectively correspond to the first Wi-Fi network and the second Wi-Fi network, and the first processor may be used for The related functions of the first Wi-Fi network are processed, and the second processor is configured to process related functions of the second Wi-Fi network.
  • Embodiments of the present application further provide a terminal device, which includes a processor, and may also include a transceiver and a memory.
  • the transceiver is used to send and receive information, or used to communicate with other communication devices;
  • the memory is used to store computer execution Instructions;
  • a processor for executing the computer-executed instructions to support the terminal device to implement the network switching method in any of the embodiments of FIG. 5 , FIG. 7 , FIG. 8 , and FIG. 9 .
  • Embodiments of the present application further provide an access point device, the access point device includes a processor, and may also include a transceiver and a memory, where the transceiver is used to send and receive information, or used to communicate with other communication devices; the memory, used for the computer-executed instructions are stored; the processor is used for executing the computer-executed instructions to support the access point device to implement the network switching method in any of the embodiments in FIG. 5 , FIG. 7 or FIG. 8 .
  • Embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute any one of FIG. 5 , FIG. 7 , FIG. 8 , and FIG. 9 .
  • the network switching method in the embodiment is not limited to FIG. 5 , FIG. 7 , FIG. 8 , and FIG. 9 .
  • Embodiments of the present application also provide a computer program product, which, when the computer program product runs on a computer, enables the computer to execute the network switching method in any of the embodiments of FIG. 5 , FIG. 7 , FIG. 8 , and FIG. 9 .
  • the embodiments of the present application also provide a network switching device, which can exist in the form of a chip, and the structure of the device includes a processor and an interface circuit, and the processor is used to communicate with other devices through the receiving circuit, so that the device Execute the network switching method in any of the embodiments of FIG. 5 , FIG. 7 , FIG. 8 , and FIG. 9 .
  • An embodiment of the present application further provides a network switching system, including a terminal device and an access point device, where the terminal device and the access point device can execute the network switching method in any of the embodiments of FIG. 5 , FIG. 7 or FIG. 8 .
  • the steps of the methods or algorithms described in conjunction with the disclosure of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (RAM), flash memory, erasable programmable read-only memory (erasable programmable read-only memory, EPROM), electrically erasable programmable Programmable read only memory (electrically EPROM, EEPROM), registers, hard disk, removable hard disk, compact disk read only memory (CD-ROM), or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in the core network interface device.
  • the processor and the storage medium may also exist in the core network interface device as discrete components.
  • the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请实施例公开了一种网络切换方法、终端设备及接入点设备，涉及无线网络技术领域，改善了现有技术中因终端设备切换网络时需要断开连接，影响用户体验的问题。具体方案为：终端设备检测其连接至接入点设备的第一Wi-Fi网络的网络参数；在该网络参数满足预设条件的情况下，终端设备发起扫描；若终端设备扫描到接入点设备的第二Wi-Fi网络，且终端设备关联过第二Wi-Fi网络，则终端设备获取第二Wi-Fi网络的认证信息；其中，第二Wi-Fi网络和第一Wi-Fi网络各自的服务集标识SSID不同；终端设备接入第二Wi-Fi网络；第二Wi-Fi网络复用终端设备与第一Wi-Fi网络已建立的协议栈链路进行通信。

Description

一种网络切换方法、终端设备及接入点设备 技术领域
本申请实施例涉及无线网络技术领域，尤其涉及一种网络切换方法、终端设备及接入点设备。
背景技术
随着无线网络技术的发展，现有的接入点设备可以同时支持多个频段(例如，2.4GHz和5GHz)，甚至同一个频段也可以支持多个网络(例如，家庭网络和访客网络)。例如，路由器可以支持2.4GHz和5GHz，当近距离传输时，5GHz网络的带宽大，时延较低，用户体验较好。但当传输距离较远时，因5GHz网络的穿墙衰减大，将导致远距离传输时信号较差。而2.4GHz网络因穿墙衰减相对较小，覆盖范围较大，在远距离传输时，用户体验较好。
图1为一种双频路由器的应用场景，如图1所示，路由器支持2.4GHz和5GHz，这两个网络的服务集标识(service set identifier，SSID)不同，5GHz网络的SSID为xxxx_5G，2.4GHz网络的SSID为xxxx。在近距离传输的情况下，终端设备连接5GHz网络，当终端设备距离路由器越来越远时，5GHz网络的信号越来越差。当信号差到一定程度时，终端设备的应用会提示“无法连接服务器”等网络异常提示信息。当终端设备与路由器之间的距离过远时，5GHz网络的信号太差导致终端设备网络连接断开。此时，路由器的2.4GHz网络因穿墙能力更强，信号强度仍然较强，终端设备可以继续连接到该路由器的2.4GHz网络上继续使用。但是，终端设备从5GHz网络切换到2.4GHz网络的过程中，需要重新获取互联网协议(internet protocol，IP)地址、建立协议栈链路，才能进行应用级数据通信，因此网络切换过程中终端设备处于断网状态，导致用户体验较差。
发明内容
本申请实施例提供一种网络切换方法、终端设备及接入点设备，在网络切换过程中终端与接入点设备之间的网络连接不会断开，能够提升用户体验。
为达到上述目的，本申请实施例采用如下技术方案：
本申请实施例的第一方面，提供一种网络切换方法，该方法包括：终端设备检测其连接至接入点设备的第一无线保真(wireless-fidelity，Wi-Fi)网络的网络参数；在该第一Wi-Fi网络的网络参数满足预设条件的情况下，终端设备发起扫描；若该终端设备扫描到上述接入点设备的第二Wi-Fi网络，且终端设备关联过该第二Wi-Fi网络，则终端设备获取第二Wi-Fi网络的认证信息；其中，第二Wi-Fi网络和第一Wi-Fi网络的服务集标识SSID不同；基于第二Wi-Fi网络的认证信息，终端设备接入该第二Wi-Fi网络；第二Wi-Fi网络复用终端设备与上述第一Wi-Fi网络已建立的协议栈链路进行通信。基于本方案，终端设备从接入点设备的第一Wi-Fi网络切换为接入点设备的第二Wi-Fi网络时，由于终端设备并未向接入点设备发送去关联请求，终端与第二 Wi-Fi网络通信时，复用了终端设备与上述第一Wi-Fi网络已建立的协议栈链路，因此在切换网络的过程中，终端设备不需要重新获取IP地址，终端设备与接入点设备之间的网络连接一直没有断开，不会出现终端设备的网络断开连接等问题，能够提升用户体验。可以理解的，本方案终端设备在接入点设备的不同网络之间进行切换的过程中，终端设备并未向接入点设备发送去关联请求，因此终端设备与接入点设备之间的网络连接并未断开，与现有技术中终端设备切换网络的过程中需要断开连接，导致终端设备再次连接时需要重新获取IP地址、建立协议栈链路相比，本方案在切换网络时仅切换了Wi-Fi通道，不需要重新获取IP地址、重新建立协议栈链路，提升了用户体验。
结合第一方面，在一种可能的实现方式中，上述第一Wi-Fi网络和上述第二Wi-Fi网络的频段不同。基于本方案，终端设备可以在接入点设备中不同频段的网络之间切换，而且在不同频段的网络之间进行切换的过程中，终端设备与接入点设备之间的网络连接一直没有断开，因此终端设备在切换网络时只需要切换Wi-Fi通道，不需要重新获取IP地址、建立协议栈链路，能够提升用户体验。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，上述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。基于本方案，终端设备可以从接入点设备的2.4GHz网络切换为5GHz网络，也可以从接入点设备的5GHz网络切换为2.4GHz网络，还可以从终端设备中的2.4GHz网络切换为6GHz网络等，终端设备在上述网络之间切换时，终端设备与接入点设备之间的连接并未断开，因此终端设备切换网络时只需要切换Wi-Fi通道，不需要重新获取IP地址、建立协议栈链路，能够提升用户体验。本方案对于接入点设备支持的具体频段并不进行限定，随着无线网络技术的发展，接入点设备还可能支持其他后续扩展频段，例如，接入点设备支持7GHz或其他后续扩展频段。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络为家庭网络，上述第二Wi-Fi网络为访客网络；或者，上述第一Wi-Fi网络为访客网络，上述第二Wi-Fi网络为家庭网络。基于本方案，终端设备可以在接入点设备的家庭网络和访客网络之间切换，而且在家庭网络和访客网络之间进行切换的过程中，终端设备与接入点设备之间的连接并未断开，因此终端设备只需要建立Wi-Fi连接，不需要重新获取IP地址、建立协议栈链路，能够提升用户体验。可选的，家庭网络和访客网络的频段可以相同，也可以不同。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述终端设备接入上述第二Wi-Fi网络之前，上述方法还包括：终端设备向接入点设备发送第一通知消息，该第一通知消息用于指示终端设备处于低功耗模式。基于本方案，通过终端设备向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，使得接入点设备可以对终端设备的数据进行缓存，避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设备之间的网络连接不会断开。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述终端设备接收上述接入点设备通过上述第二Wi-Fi网络发送的第一数据，该第一数据为上述接入点设备通过上述第一Wi-Fi网络缓存的数据。基于本方案，终 端设备与接入点设备的第二Wi-Fi网络建立Wi-Fi连接后，终端设备可以接收接入点设备在第一Wi-Fi网络缓存的数据，从而使得切换网络后，终端设备的数据不会丢失，确保终端设备正常通信，进一步提升了用户体验。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述终端设备发起扫描，包括：上述终端设备基于上述第二Wi-Fi网络的信道信息，发起扫描。基于本方案，终端设备发起扫描时，可以基于第二Wi-Fi网络的信道信息进行扫描，从而能够节省扫描时间，提升用户体验。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的网络参数满足预设条件包括：上述第一Wi-Fi网络的质量低于第一预设阈值或上述第一Wi-Fi网络的传输速率低于第二预设阈值。基于本方案，终端设备可以在第一Wi-Fi网络的质量较差或者第一Wi-Fi网络的传输速率过低时发起扫描。可选的，第一预设阈值、第二预设阈值可以为一个或多个。该第一预设阈值和第二预设阈值可以与第一Wi-Fi网络的频段相对应。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述终端设备将网络信息更新为上述第二Wi-Fi网络的信息。基于本方案，在终端设备与接入点设备的第二Wi-Fi网络建立Wi-Fi连接后，终端设备可以将其网络信息更新为第二Wi-Fi网络的信息。例如，终端设备与接入点设备的第二Wi-Fi网络建立Wi-Fi连接后，终端设备可以将通知界面中的网络连接名称更新为第二Wi-Fi网络的名称。
本申请实施例的第二方面，提供一种网络切换方法，该方法包括：接入点设备的第二无线保真Wi-Fi网络与终端设备建立连接；其中，第二Wi-Fi网络复用终端设备与接入点设备的第一Wi-Fi网络已建立的协议栈链路进行通信，第二Wi-Fi网络和第一Wi-Fi网络各自的服务集标识SSID不同。可选的，该第一Wi-Fi网络为终端设备切换至第二Wi-Fi网络之前连接的无线网络。基于本方案，接入点设备的第二Wi-Fi网络与终端设备通信时，接入点设备的第二Wi-Fi网络与终端设备复用终端设备与第一Wi-Fi网络已建立的协议栈链路进行通信，因此在网络切换过程中，接入点设备与终端设备之间的连接一直没有断开，不会出现终端设备的网络断开连接等问题，能够提升用户体验。
结合第二方面，在一种可能的实现方式中，上述第一Wi-Fi网络和上述第二Wi-Fi网络的频段不同。基于本方案，终端设备可以在接入点设备的不同频段的网络之间切换，而且在不同频段的网络之间进行切换的过程中，终端设备与接入点设备之间的网络连接一直没有断开，能够提升用户体验。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，上述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。基于本方案，接入点设备可以支持多个频段的网络，终端设备可以在接入点设备支持的多个频段的网络之间切换，而且终端设备在接入点设备的网络之间切换时，终端设备与接入点设备之间的连接并未断开，能够提升用户体验。本方案对于接入点设备支持的具体频段并不进行限定，随着无线网络技术的发展，接入点设备可能支持更多数量和更多频段的网络。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络为家庭网络，上述第二Wi-Fi网络为访客网络；或者，上述第一Wi-Fi网络为访客网络，上述第二Wi-Fi网络为家庭网络。基于本方案，接入点设备可以支持多个类型的网络，终端设备可以在接入点设备的家庭网络和访客网络之间切换，而且在家庭网络和访客网络之间进行切换的过程中，终端设备与接入点设备之间的连接并未断开，能够提升用户体验。可选的，家庭网络和访客网络的频段可以相同，也可以不同。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，上述接入点设备的第二Wi-Fi网络与终端设备建立连接之前，上述方法还包括：接入点设备接收来自终端设备的第一通知消息，该第一通知消息用于指示终端设备处于低功耗模式；接入点设备基于该第一通知消息，通过第一Wi-Fi网络缓存终端设备的第一数据。基于本方案，通过接入点设备接收指示终端设备处于低功耗模式的第一通知消息，接入点设备可以缓存终端设备的数据，从而避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设备之间的网络连接不会断开。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述接入点设备将上述第一数据从上述第一Wi-Fi网络搬迁至上述第二Wi-Fi网络；上述接入点设备通过上述第二Wi-Fi网络向上述终端设备发送上述第一数据。基于本方案，接入点设备可以将其通过原网络(第一Wi-Fi网络)缓存的数据搬迁至新网络(第二Wi-Fi网络)，并通过第二Wi-Fi网络发送该数据，从而使得终端设备在切换网络以后，终端设备的数据不会丢失，确保终端设备正常通信，进一步提升用户体验。
本申请实施例的第三方面，提供一种终端设备，该终端设备包括：收发器和处理器；其中，处理器，用于检测终端设备连接至接入点设备的第一无线保真Wi-Fi网络的网络参数；在第一Wi-Fi网络的网络参数满足预设条件的情况下，处理器发起扫描；若处理器扫描到接入点设备的第二Wi-Fi网络，且终端设备关联过第二Wi-Fi网络，则处理器获取第二Wi-Fi网络的认证信息；其中，第二Wi-Fi网络和第一Wi-Fi网络各自的服务集标识SSID不同；基于第二Wi-Fi网络的认证信息，处理器通过收发器接入第二Wi-Fi网络；第二Wi-Fi网络复用终端设备与第一Wi-Fi网络已建立的协议栈链路进行通信。
结合第三方面，在一种可能的实现方式中，上述第一Wi-Fi网络和上述第二Wi-Fi网络的频段不同。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，上述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络为家庭网络，上述第二Wi-Fi网络为访客网络；或者，上述第一Wi-Fi网络为访客网络，上述第二Wi-Fi网络为家庭网络。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述收发器， 还用于：向上述接入点设备发送第一通知消息，该第一通知消息用于指示上述终端设备处于低功耗模式。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述收发器，还用于：接收上述接入点设备通过上述第二Wi-Fi网络发送的第一数据，该第一数据为上述接入点设备通过上述第一Wi-Fi网络缓存的数据。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理器，具体用于：基于上述第二Wi-Fi网络的信道信息，发起扫描。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的网络参数满足预设条件包括：上述第一Wi-Fi网络的质量低于第一预设阈值或上述第一Wi-Fi网络的传输速率低于第二预设阈值。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理器，还用于：将网络信息更新为上述第二Wi-Fi网络的信息。
本申请实施例的第四方面，提供一种接入点设备，上述接入点设备包括：第一收发器和处理器；其中，该第一收发器为接入点设备的第二无线保真Wi-Fi网络收发信息的收发器；处理器，用于通过第一收发器与终端设备建立连接；其中，第二Wi-Fi网络复用终端设备与接入点设备的第一Wi-Fi网络已建立的协议栈链路进行通信，第二Wi-Fi网络和第一Wi-Fi网络各自的服务集标识SSID不同。
结合第四方面，在一种可能的实现方式中，上述第一Wi-Fi网络和上述第二Wi-Fi网络的频段不同。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，上述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述第一Wi-Fi网络为家庭网络，上述第二Wi-Fi网络为访客网络；或者，上述第一Wi-Fi网络为访客网络，上述第二Wi-Fi网络为家庭网络。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述接入点设备还包括第二收发器，该第二收发器为接入点设备的第一Wi-Fi网络收发信息的收发器；第二收发器，用于接收来自终端设备的第一通知消息，该第一通知消息用于指示终端设备处于低功耗模式；处理器，还用于基于第一通知消息，通过第二收发器缓存终端设备的第一数据。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理器，还用于将上述第一数据从上述第一Wi-Fi网络搬迁至上述第二Wi-Fi网络；上述第一收发器，还用于向上述终端设备发送上述第一数据。
上述第三方面以及第三方面的各种实现方式的效果描述可以参考第一方面相应效果的描述，上述第四方面以及第四方面的各种实现方式的效果描述可以参考第二方面相应效果的描述，在此不再赘述。
本申请实施例的第五方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面至第二方面中任一所述的网络切换方法。
本申请实施例的第六方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面至第二方面中任一所述的网络切换方法。
本申请实施例的第七方面，提供一种网络切换系统，该网络切换系统包括终端设备和接入点设备，所述终端设备用于实现上述第一方面中任一所述的网络切换方法，所述接入点设备用于实现上述第二方面中任一所述的网络切换方法。
本申请实施例的第八方面，提供一种芯片系统，该芯片系统包括处理器、存储器，存储器中存储有计算机程序代码；所述计算机程序代码被所述处理器执行时，实现如上述任一方面所述的网络切换方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例的第九方面，提供一种网络切换装置，该装置包括：处理器和存储器，存储器中存储有指令；指令被处理器执行时，用于使得所述网络切换装置实现如上述任一方面所述的网络切换方法。
本申请实施例的第十方面，提供一种网络切换装置，该装置包括：存储器，用于存储计算机程序；收发器，用于接收或发送无线电信号；处理器，用于执行所述计算机程序，使得所述电子设备实现如上述任一方面所述的网络切换方法。
附图说明
图1为本申请实施例提供的一种双频路由器的应用场景示意图；
图2为本申请实施例提供的一种网络切换方法的流程示意图；
图3为本申请实施例提供的一种网络切换方法的仿真结果的示意图；
图4为本申请实施例提供的一种通信装置的结构组成示意图；
图5为本申请实施例提供的另一种网络切换方法的流程示意图；
图6为本申请实施例提供的另一种网络切换方法的仿真结果的示意图；
图7为本申请实施例提供的另一种网络切换方法的流程示意图；
图8为本申请实施例提供的另一种网络切换方法的流程示意图；
图9为本申请实施例提供的另一种网络切换方法的流程示意图；
图10为本申请实施例提供的一种网络切换装置的组成示意图；
图11为本申请实施例提供的另一种网络切换装置的组成示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。在本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或，a和b和c，其中a、b和c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分，本领域技术人员可以理解“第一”、“第二”等字 样并不对数量和执行次序进行限定。比如，本申请实施例中的第一Wi-Fi网络中的“第一”和第二Wi-Fi网络中的“第二”仅用于区分不同的无线网络。本申请实施例中出现的第一、第二等描述，仅作示意与区分描述对象之用，没有次序之分，也不表示本申请实施例中对设备个数的特别限定，不能构成对本申请实施例的任何限制。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
现有的接入点设备(access point，AP)可以同时支持多个频段，甚至同一个频段也可以支持多个网络。例如，接入点设备可以支持2.4GHz和5GHz。再例如，接入点设备可以支持家庭网络和访客网络，家庭网络和访客网络的频段可以相同，也可以不同。
示例性的，本申请实施例中的接入点设备可以为路由器，也可以为任何支持多个频段或多个网络的设备，本申请对于接入点设备的具体类型并不限定，下述实施例中仅以接入点设备为路由器为例进行说明。
示例性的，以路由器支持的频段为2.4GHz和5GHz为例，多个移动终端设备(例如，电脑、手机、平板等)可以连接到路由器的某一个网络上。因不同网络的频段、带宽、干扰以及穿墙性能等的差异，可能导致终端设备连接不同网络时的用户体验不同。例如，当终端设备距离路由器较近时，5GHz网络的带宽大，时延较低，用户体验较好。但终端设备距离路由器较远时，因5GHz网络的穿墙衰减大，将导致远距离传输时信号较差。而2.4GHz网络因穿墙衰减相对较小，覆盖范围较大，在远距离传输时，用户体验相对较好。因此，当终端设备移动时，可能因当前连接的网络信号较差等原因造成用户体验较差。
如果路由器支持多频合一(例如，路由器的多个网络的SSID，密码，认证方式等相同)，可以通过11kvr或者私有漫游的方式使得终端设备切换到体验更好的网络上。例如，在路由器的2.4GHz网络和5GHz网络的SSID相同(路由器支持双频合一)的场景下，若终端设备距离路由器较远，5GHz网络的信号较差，可以通过漫游的方式使得终端设备切换到2.4GHz网络。
但是，如果路由器不支持多频合一模式，或者，虽然路由器支持多频合一但未配置多频合一模式，那么终端设备在网络信号较差的时候，可能断网，也可能与较差的网络断开后再连接到信号更好的无线网络。例如，路由器支持多个无线网络，该多个无线网络的SSID不同，那么终端设备在当前连接的网络信号较差的时候，可能断网，也可能与当前网络断开后再连接到该路由器的其他网络。
例如，图1所示的一种双频路由器的应用场景，该双频路由器支持的频段为2.4GHz和5GHz，2.4GHz网络和5GHz网络的SSID不同，5GHz网络的SSID为xxxx_5G，2.4GHz网络的SSID为xxxx。在近距离传输的情况下，5GHz网络的带宽大，时延较低，用户体验较好，终端设备连接5GHz网络。当终端设备距离路由器越来越远时，因5GHz网络穿墙衰减大，5GHz网络的信号越来越差。当信号差到一定程度时，终端设备的应用会提示“无法连接服务器”等网络异常提示信息。如图1所示，当终端设 备与路由器之间的距离过远时，5GHz网络接收信号强度(received signal strength indication，RSSI)(例如，-80dbm)小于2.4GHz网络的RSSI(例如，-60dbm)，5GHz网络的信号较差导致终端设备网络连接断开。此时，路由器的2.4GHz网络因穿墙能力更强，信号强度仍然较强，终端设备可以继续连接到该路由器的2.4GHz网络上继续使用。但是，终端设备从5GHz网络切换到2.4GHz网络的过程中，需要重新获取IP地址、建立协议栈链路，才能进行应用级数据通信，因此网络切换过程中终端设备处于断网状态，导致用户体验较差。
图2为一种网络切换方法，如图2所示，路由器支持网络1(例如，5GHz网络)和网络2(例如，2.4GHz网络)，网络1和网络2的SSID不同，终端设备当前与网络1连接，且终端设备曾经关联过网络2(终端设备保存网络2的用户名和密码)。在网络1的网络质量较差、用户触发切换、或终端设备不能和网络1保持连接的情况下，终端设备向路由器的网络1发送去关联帧，通知路由器断开连接。路由器接收终端设备的去关联帧后，会删除和终端设备相关的信息，如数据信息等。终端设备在和网络1断开连接后，扫描到网络2的信号，和网络2建立新的连接。在网络2上重新获取IP地址，接入网络2，终端设备更新网络信息，同时，路由器更新终端设备的信息，确定新设备接入。但是，在该方法中，终端设备发送去关联帧以后，终端设备与网络1会断开连接，断开连接后，终端设备的应用可能提示“无法连接到服务器”等提示信息。终端设备和网络2建立无线保真(wireless-fidelity，Wi-Fi)连接后，需要重新获取IP地址、重新建立协议栈链路，才能进行应用级数据通信。
如图3所示，根据网络性能测试工具iperf的测试结果可知，在终端设备和5GHz网络断开前，网络的平均吞吐量为30Mbits/sec，终端设备切换网络的过程中，终端设备和5GHz网络会断开，网络断开后iperf工具的连接也断开，需要重新建立Wi-Fi连接后才能正常通信。也就是说，该方法在从5GHz网络切换到2.4GHz网络的过程中，终端设备需要断开连接，而且终端设备再次连接时需要重新获取IP地址、建立协议栈链路，影响用户体验。
为了改善了现有技术中因终端设备切换网络的过程中需要断开连接从而导致终端设备再次连接时需要重新获取IP地址、建立协议栈链路，影响用户体验的问题，本申请实施例提供一种网络切换方法，该方法在网络切换过程中无需重新获取IP地址，能够提升用户体验。
示例性的，在本申请实施例提供的网络切换方法中，终端设备可以为平板电脑、桌面型、膝上型、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、手持计算机、上网本、个人数字助理(personal digital assistant，PDA)、手机等可以联网的终端设备。本申请实施例中的接入点设备可以为路由器等支持多频段或多网络的设备。本申请实施例中对于终端设备和接入点设备的具体形式不做特殊限制，在此仅是示例性说明。
在具体实现时，终端设备和接入点设备均可以采用图4所示的组成结构，或者包括图4所示的部件。
示例性的，图4为本申请实施例提供的一种通信装置400的组成示意图。如图4所示，该通信装置400可以包括至少一个处理器401，存储器402、收发器403以及通 信总线404。
下面结合图4对该通信装置400的各个构成部件进行具体的介绍：
处理器401是通信装置400的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器401是一个中央处理器(central processing unit，CPU)，也可以是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)。
其中，处理器401可以通过运行或执行存储在存储器402内的软件程序，以及调用存储在存储器402内的数据，执行通信设备的各种功能。
在具体的实现中，作为一种实施例，处理器401可以包括一个或多个CPU，例如图4中所示的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置400可以包括多个处理器，例如图4中所示的处理器401和处理器405。这些处理器中的每一个可以是一个单核处理器(single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个通信设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器402可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储通信设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储通信设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储通信设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器402可以是独立存在，通过通信总线404与处理器401相连接。存储器402也可以和处理器401集成在一起。其中，所述存储器402用于存储执行本申请方案的软件程序，并由处理器401来控制执行。
收发器403，用于与其他设备(例如接入点或站点)之间的通信。当然，收发器403还可以用于与通信网络通信，通信网络例如为以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。收发器403可以包括接收单元实现接收功能，以及发送单元实现发送功能。
通信总线404，可以是工业标准体系结构(industry standard architecture，ISA)总线、外部通信设备互连(peripheral component，PCI)总线或扩展工业标准体系结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
可选的，终端设备和接入点设备可以包括比图4所示的更多或更少的部件，图4仅是示例性的示意。
结合图4，如图5所示，为本申请实施例提供的一种网络切换方法，该方法可以 包括以下步骤：
S501、终端设备检测终端设备连接至接入点设备的第一Wi-Fi网络的网络参数。
可选的，该接入点设备可以支持多个频段的无线网络或支持多个不同类型的无线网络。上述第一Wi-Fi网络可以为接入点设备支持的任一频段或类型的无线网络。例如，接入点设备支持2.4GHz网络和5GHz网络时，第一Wi-Fi网络可以为2.4GHz网络，也可以为5GHz网络。
可选的，上述第一Wi-Fi网络的网络参数可以包括：第一Wi-Fi网络的质量、第一Wi-Fi网络的传输速率等参数。本申请实施例对于第一Wi-Fi网络的网络参数的具体内容并不进行限定，在此仅是示例性说明。
S502、在第一Wi-Fi网络的网络参数满足预设条件的情况下，终端设备发起扫描。
示例性的，上述终端设备连接的第一Wi-Fi网络的网络参数满足预设条件包括：终端设备连接的第一Wi-Fi网络的质量低于第一预设阈值，或，终端设备连接的第一Wi-Fi网络的传输速率低于第二预设阈值。
例如，若终端设备已连接5GHz网络，当终端设备连接的5GHz网络的网络质量较差时，终端设备可以主动发起扫描。再例如，若终端设备已连接2.4GHz网络，当终端设备连接的2.4GHz网络的传输速率过低时，终端设备也可以主动发起扫描。本申请实施例对于终端发起扫描的具体预设条件并不限定，在此仅是示例性说明。
可选的，上述第一预设阈值可以为一个或多个。该第一预设阈值可以与第一Wi-Fi网络的频段或网络类型相对应。例如，终端设备连接的第一Wi-Fi网络为2.4GHz网络时对应的第一预设阈值，与第一Wi-Fi网络为5GHz网络时对应的第一预设阈值可以不相同。上述第二预设阈值可以为一个或多个。该第二预设阈值可以与第一Wi-Fi网络的频段或网络类型相对应。再例如，终端设备连接的第一Wi-Fi网络为家庭网络时对应的第二预设阈值，与第一Wi-Fi网络为访客网络时对应的第二预设阈值也可以不相同。
可选的，在用户了解不同网络的频段、带宽、干扰以及穿墙性能等因素对网速的影响时，在终端设备距离路由器较远时，用户也可以主动触发终端设备发起扫描。例如，在终端设备连接5GHz网络，且曾关联过2.4GHz网络的情况下，终端设备距离路由器较远时，如果用户主动点击2.4GHz网络以将网络从5GHz网络切换至2.4GHz网络，那么终端设备响应于用户触发网络切换的动作，可以主动发起扫描。
示例性的，上述终端发起扫描时，可以扫描所有可连接的无线网络，也可以仅扫描接入点设备的其他网络。
可选的，以接入点设备支持的网络包括第一Wi-Fi网络和第二Wi-Fi网络为例，上述终端设备发起扫描，可以包括：终端设备基于第二Wi-Fi网络的信道信息，发起扫描。在该实现方式中，终端设备可以仅扫描第二Wi-Fi网络的信道，确定第二Wi-Fi网络是否存在。需要说明的是，该终端设备曾关联过该第二Wi-Fi网络，终端设备可以基于其存储的第二Wi-Fi网络的信道信息，扫描第二Wi-Fi网络。例如，若终端设备中存储的第二Wi-Fi网络的信道信息为信道6，那么终端设备在发起扫描时，可以仅扫描信道6，确定信道6是否有网络，从而能够节省扫描时间，提升用户体验。
可以理解的，本申请实施例在终端设备连接的第一Wi-Fi网络质量较差或传输速 率较低的情况的下，可以主动发起扫描，确定是否有其他可连接的无线网络。
S503、若终端设备扫描到接入点设备的第二Wi-Fi网络，且终端设备关联过第二Wi-Fi网络，则终端设备获取第二Wi-Fi网络的认证信息。
其中，第二Wi-Fi网络和第一Wi-Fi网络各自的服务集标识SSID不同。
可选的，上述终端设备扫描到的第二Wi-Fi网络与终端设备当前已连接的第一Wi-Fi网络为同一个接入点设备的两个Wi-Fi网络，且这两个Wi-Fi网络的SSID不同。例如，以该接入点设备为多频路由器为例，该多频路由器支持第一Wi-Fi网络和第二Wi-Fi网络，该第一Wi-Fi网络和第二Wi-Fi网络的网络名称不相同。
可选的，终端设备关联过第二Wi-Fi网络，包括：终端设备中已保存第二Wi-Fi网络的网络名称、密码、信道等信息。由于终端设备关联过第二Wi-Fi网络，从而终端设备扫描到第二Wi-Fi网络时，可以基于该第二Wi-Fi网络的认证信息接入该第二Wi-Fi网络。
示例性的，上述第二Wi-Fi网络的认证信息包括第二Wi-Fi网络的网络名称、密码等认证信息。本申请实施例对于第二Wi-Fi网络的认证信息的具体内容并不限定，在此仅是示例性说明。可以理解的，该第二Wi-Fi网络的认证信息可以包括终端设备接入第二Wi-Fi网络时需要的信息。
可选的，上述接入点设备可以为多频路由器，该多频路由器在同一个频段可以支持一个或多个网络。示例性的，上述第一Wi-Fi网络和第二Wi-Fi网络可以为该多频路由器中不同频段的网络，也可以为该多频路由器中同一频段的不同类型的网络。
示例性的，第一Wi-Fi网络的频段可以为2.4GHz、5GHz或6GHz，第二Wi-Fi网络的频段可以为2.4GHz、5GHz或6GHz。
例如，第一Wi-Fi网络和第二Wi-Fi网络可以为不同频段的网络。以接入点设备为双频路由器，该双频路由器支持2.4GHz和5GHz为例，第一Wi-Fi网络的频段可以为2.4GHz，第二Wi-Fi网络的频段可以为5GHz。或者，第一Wi-Fi网络的频段可以为5GHz，第二Wi-Fi网络的频段可以为2.4GHz。本申请实施例对于接入点设备支持的频段数量以及频段类型并不进行限定，随着无线网络技术的发展，接入点设备还可能支持其他后续扩展频段，例如，接入点设备支持7GHz或其他后续扩展频段，接入点设备支持的所有频段类型均能落入本申请的保护范围。在此仅以接入点设备支持2.4GHz和5GHz为例进行示例性说明。
再例如，第一Wi-Fi网络和第二Wi-Fi网络可以为不同类型的网络。第一Wi-Fi网络可以为家庭网络，第二Wi-Fi网络可以为访客网络；或者，第一Wi-Fi网络可以为访客网络，第二Wi-Fi网络可以为家庭网络。可选的，该家庭网络和访客网络的频段可以相同，也可以不同，本申请对此并不限定。
可选的，上述终端设备扫描到的第二Wi-Fi网络的媒体访问控制(media access control，MAC)地址与第一Wi-Fi网络的MAC地址相差较小。例如，第二Wi-Fi网络和第一Wi-Fi网络的MAC地址有5个字节是相同的。可选的，上述终端设备扫描到的第二Wi-Fi网络的信号强度与第一Wi-Fi网络的信号强度较为接近。例如，第二Wi-Fi网络和第一Wi-Fi网络的信号强度相差20dbm以内。
可选的，上述步骤S503扫描到的第二Wi-Fi网络的质量可以优于第一Wi-Fi网络 的质量，或者，第二Wi-Fi网络的信号强度可以高于第一Wi-Fi网络的信号强度，或者，第二Wi-Fi网络的传输速率可以高于第一Wi-Fi网络的传输速率。
可选的，若终端设备扫描到接入点设备的第二Wi-Fi网络，但终端设备未关联过该第二Wi-Fi网络(例如，终端设备中未保存第二Wi-Fi网络的密码信息)，那么终端设备将继续保持与第一Wi-Fi网络之间的连接，不会触发切换至第二Wi-Fi网络。例如，终端设备扫描到第二Wi-Fi网络，但因终端设备未与该第二Wi-Fi网络连接过，终端设备中未保存该第二Wi-Fi网络，那么即使终端设备扫描到第二Wi-Fi网络，也不会触发网络切换，还是会保持与第一Wi-Fi网络连接。
可选的，若终端设备发起扫描以后，终端设备未扫描到接入点设备的第二Wi-Fi网络，而扫描到了第三Wi-Fi网络，该第三Wi-Fi网络与第一Wi-Fi网络为不同接入点设备的无线网络，那么终端设备保持与第一Wi-Fi网络的连接，不会触发网络切换。
S504、基于第二Wi-Fi网络的认证信息，终端设备接入第二Wi-Fi网络。
其中，第二Wi-Fi网络复用终端设备与第一Wi-Fi网络已建立的协议栈链路进行通信。
示例性的，基于第二Wi-Fi网络的密码信息，终端设备可以接入第二Wi-Fi网络。可选的，终端设备接入第二Wi-Fi网络，可以包括：终端设备与第二Wi-Fi网络之间进行认证、关联、秘钥交互等建立Wi-Fi连接的流程，本申请实施例对于建立Wi-Fi连接的具体流程和步骤不再详细描述，具体可以参考现有技术中的相关内容。
可选的，终端设备接入第二Wi-Fi网络时，可以通过重关联的方式接入第二Wi-Fi网络，也可以通过关联的方式接入第二Wi-Fi网络。例如，终端设备接入第二Wi-Fi网络时，可以向接入点设备发送重关联帧或关联帧，请求与第二Wi-Fi网络建立Wi-Fi连接。本申请对于终端设备接入第二Wi-Fi网络的具体方式并不限定，在此仅是示例性说明。
由于终端设备接入接入点设备的第二Wi-Fi网络以前，终端设备并未向接入点设备发送去关联请求，因此终端设备与接入点设备的第一Wi-Fi网络之间的连接未断开，从而终端设备接入第二Wi-Fi网络时，不需要再重新获取IP地址，第二Wi-Fi网络可以复用终端设备与第一Wi-Fi网络已经建立的协议栈链路进行通信。也就是说，终端设备接入第二Wi-Fi网络时，只需要做Wi-Fi入网流程的帧交互，不需要再重新获取IP地址，终端设备与第二Wi-Fi网络通信时，复用了终端设备与第一Wi-Fi网络已建立的协议栈链路，因此在切换网络的过程中，终端设备与接入点设备之间的网络一直没有断开。
可以理解的，在终端设备连接的接入点设备的第一Wi-Fi网络的质量较差时，由于本申请实施例中终端设备并没有向接入点设备发送去关联帧请求断开网络，终端设备与接入点设备之间的网络连接一直没有断开，因此终端设备不需要重新获取IP地址，从而终端设备接入接入点设备的第二Wi-Fi网络后，终端设备与第二Wi-Fi网络可以在终端设备与第一Wi-Fi网络已经建立的协议栈链路上进行通信。
例如，以接入点设备为双频路由器，双频路由器支持2.4GHz网络和5GHz网络，第一Wi-Fi网络为5GHz网络，第二Wi-Fi网络为2.4GHz网络为例，终端设备与2.4GHz网络建立Wi-Fi连接时只需要做Wi-Fi入网流程的帧交互，不需要重新获取IP地址。 而且终端设备通过2.4GHz网络通信时可以复用终端设备与5GHz网络通信时已经建立的协议栈链路，即终端设备的网络从双频路由器的5GHz网络切换至双频路由器的2.4GHz网络的过程中，只需要重新建立Wi-Fi连接，不需要重新获取IP地址，也不需要重新建立协议栈链路，可以在原协议栈链路上继续通信。
可以理解的，由于终端设备可以连接一个无线网络，因此终端设备与第二Wi-Fi网络的连接建立时，终端设备与第一Wi-Fi网络的连接断开。而且由于终端设备连接的无线网络从接入点设备的第一Wi-Fi网络切换为接入点设备的第二Wi-Fi网络的过程中，终端设备与接入点设备之间的网络连接一直未断开，只是切换了Wi-Fi通道。因此，对于接入点设备而言，终端设备与第二Wi-Fi网络建立Wi-Fi连接时，该终端设备依然作为老设备接入，终端设备的相关信息依然保留。
例如，以接入点设备为双频路由器，双频路由器支持5GHz网络和2.4GHz网络，第一Wi-Fi网络为5GHz网络，5GHz网络的SSID为XXXX_5G，第二Wi-Fi网络为2.4GHz网络，2.4GHz网络的SSID为XXXX为例。如图6所示，根据网络性能测试工具iperf的测试结果可知，当终端设备从双频路由器的5GHz网络切换为双频路由器的2.4GHz网络的过程中，测试工具iperf在网络切换前后仍然可以保持正常通信，并具有一定的吞吐量数据，不会出现终端设备的网络断开连接的问题。
本申请实施例提供的网络切换方法，通过在终端设备连接的接入点设备的第一Wi-Fi网络的网络参数满足预设条件的情况下，终端发起扫描，并在终端扫描到接入点设备的第二Wi-Fi网络，且终端设备关联过该第二Wi-Fi网络的情况下，终端设备获取第二Wi-Fi网络的认证信息，并接入该第二Wi-Fi网络。因此，本方案在终端设备连接的接入点设备的第一Wi-Fi网络的质量较差时，由于终端设备并未向接入点设备发送去关联帧请求断开网络，终端设备与接入点设备之间的网络连接一直没有断开。因此在终端设备接入第二Wi-Fi网络时，不需要再重新获取IP地址，终端设备与第二Wi-Fi网络可以在终端设备与第一Wi-Fi网络已经建立的协议栈链路上进行通信。可以理解的，与现有技术中终端设备切换网络的过程中需要断开连接，导致终端设备再次连接时需要重新获取IP地址、建立协议栈链路相比，本申请实施例的方案不会出现终端设备的网络断开连接的问题，也不需要重新获取IP地址，能够提升用户体验。
可选的，如图7所示，在上述终端设备扫描到接入点设备的第二Wi-Fi网络后，上述方法还可以包括步骤S505-S508。
S505、终端设备向接入点设备发送第一通知消息。
该第一通知消息用于指示终端设备处于低功耗模式。例如，第一通知消息用于指示终端设备处于休眠状态。
可选的，在终端设备扫描到接入点设备的第二Wi-Fi网络的情况下，终端设备可以向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，从而使得接入点设备通过第一Wi-Fi网络缓存终端设备的数据。
可以理解的，通过终端设备向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，使得接入点设备可以对终端设备的数据进行缓存，避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设备 之间的网络连接不会断开。
S506、接入点设备接收第一通知消息。
示例性的，接入点设备接收指示终端设备处于低功耗模式的第一通知消息。
S507、接入点设备基于第一通知消息，通过第一Wi-Fi网络缓存终端设备的第一数据。
示例性的，接入点设备基于第一通知消息，获知终端设备处于低功耗模式后，通过与终端设备连接的第一Wi-Fi网络缓存终端设备的数据。
例如，以接入点设备为双频路由器，双频路由器支持2.4GHz网络和5GHz网络，第一Wi-Fi网络为5GHz网络，第二Wi-Fi网络为2.4GHz网络为例，在5GHz网络的质量较差时，终端设备扫描到2.4GHz网络后，向双频路由器发送第一通知消息，双频路由器获知终端设备处于低功耗模式后，可以通过5GHz网络缓存终端设备的数据。
S508、终端设备将网络信息更新为第二Wi-Fi网络的信息。
示例性的，终端设备接入第二Wi-Fi网络后，终端设备当前连接的网络为第二Wi-Fi网络，终端设备可以将网络信息更新为第二Wi-Fi网络的信息。例如，终端设备将通知界面中的网络连接名称更新为第二Wi-Fi网络的名称。
例如，以接入点设备为双频路由器，双频路由器支持5GHz网络和2.4GHz网络，第一Wi-Fi网络为5GHz网络，5GHz网络的SSID为XXXX_5G，第二Wi-Fi网络为2.4GHz网络，2.4GHz网络的SSID为XXXX为例，当终端设备从双频路由器的5GHz网络切换为双频路由器的2.4GHz网络后，终端设备将无线局域网的网络名称更新为2.4GHz网络的SSID(比如，XXXX)。
可选的，在上述终端设备成功接入第二Wi-Fi网络的情况下，终端设备将网络信息更新为第二Wi-Fi网络的信息。在终端设备未成功接入第二Wi-Fi网络的情况下，终端设备回退到第一Wi-Fi网络，接入第一Wi-Fi网络。
可以理解的，本申请实施例对于上述步骤S501-S508的具体执行顺序并不限定，图7仅是示意性说明。可选的，终端设备在扫描到接入点设备的第二Wi-Fi网络后，也可以先向接入点设备发送第一通知消息，再接入第二Wi-Fi网络。
本申请实施例提供的网络切换方法，终端设备从接入点设备的第一Wi-Fi网络切换为接入点设备的第二Wi-Fi网络时，由于终端设备并未向接入点设备发送去关联请求，因此在切换网络的过程中，终端设备不需要重新获取IP地址，终端设备与接入点设备之间的网络连接一直没有断开，不会出现终端设备的网络断开连接等问题，能够提升用户体验。而且通过终端设备向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，使得接入点设备可以对终端设备的数据进行缓存，避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设备之间的网络连接不会断开。
如图8所示，在接入点设备支持管理多个Wi-Fi网络的数据的情况下，本申请实施例还提供一种网络切换方法，该方法除包括上述步骤S501-S508外，还可以包括步骤S509-S511。
S509、接入点设备将第一数据从第一Wi-Fi网络搬迁至第二Wi-Fi网络。
该第一数据为上述步骤S507中接入点设备通过第一Wi-Fi网络缓存的终端设备的数据。
可选的，接入点设备可以管理多个网络的数据，该多个网络可以为接入点设备的全部网络，也可以为接入点设备的部分网络。
示例性，以接入点设备为双频路由器，该双频路由器支持2.4GHz网络和5GHz网络，终端设备的网络从该双频路由器的5GHz网络切换为2.4GHz网络为例，在双频路由器支持管理2.4GHz网络和5GHz网络的数据的情况下，双频路由器可以将5GHz网络中缓存的终端设备的数据搬迁至2.4GHz网络。
S510、接入点设备通过第二Wi-Fi网络向终端设备发送第一数据。
示例性的，终端设备与第二Wi-Fi网络的连接建立后，接入点设备可以将5GHz网络中缓存的终端设备的数据通过2.4GHz网络发送给终端设备，从而使得终端设备在网络切换以后，不会丢包，保证完整的正常通信，进一步提升用户体验。
S511、终端设备接收第一数据。
示例性的，终端设备切换网络后，可以接收接入点设备在原网络中缓存的数据，从而使得切换网络后，终端设备的数据不会丢失，确保终端设备正常通信，提升了用户体验。
本申请实施例提供的网络切换方法，终端设备从接入点设备的第一Wi-Fi网络切换为接入点设备的第二Wi-Fi网络时，由于终端设备并未向接入点设备发送去关联请求，因此在切换网络的过程中，终端设备不需要重新获取IP地址，终端设备与接入点设备之间的网络连接一直没有断开，不会出现终端设备的网络断开连接等问题，能够提升用户体验。而且通过终端设备向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，使得接入点设备可以对终端设备的数据进行缓存，避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设备之间的网络连接不会断开。而且在接入点设备支持管理多个Wi-Fi网络的数据的情况下，终端设备接入第二Wi-Fi后，接入点设备可以将其通过原网络(第一Wi-Fi网络)缓存的数据搬迁至新网络(第二Wi-Fi网络)，并通过第二Wi-Fi网络发送该数据，从而使得终端设备在切换网络以后，可以做到零丢包，保证完整的正常通信，进一步提升用户体验。
示例性的，图9为本申请实施例提供的一种网络切换方法，该方法以终端设备为执行主体，该方法可以包括以下步骤：
S901、终端设备检测终端设备连接至接入点设备的第一Wi-Fi网络的网络参数。
S902、在第一Wi-Fi网络的网络参数满足预设条件的情况下，终端设备发起扫描。
可以理解的，步骤S901-S902的具体实现方式可以参考上述步骤S501-S502的实现方式，在此不再赘述。
S903、若终端设备扫描到第二Wi-Fi网络，终端设备确定第二Wi-Fi网络与第一Wi-Fi网络是否为同一接入点设备的无线网络。
在终端设备确定该第二Wi-Fi网络与第一Wi-Fi网络为同一接入点设备的无线网络的情况下，终端设备继续执行步骤S904。在终端设备确定该第二Wi-Fi网络与第一 Wi-Fi网络为不同接入点设备的无线网络的情况下，终端设备保持与第一Wi-Fi网络的连接，不触发网络切换。
S904、终端设备确定是否关联过第二Wi-Fi网络。
在终端设备确定关联过第二Wi-Fi网络的情况下，终端设备继续执行步骤S905。在终端设备确定未关联过第二Wi-Fi网络的情况下，终端设备保持与第一Wi-Fi网络的连接，不触发网络切换。
S905、终端设备向接入点设备发送第一通知消息。
可以理解的，步骤S905的具体实现方式可以参考上述步骤S505的实现方式，在此不再赘述。
S906、终端设备获取第二Wi-Fi的认证信息，并基于第二Wi-Fi的认证信息接入第二Wi-Fi网络。
可以理解的，步骤S906的具体实现方式可以参考上述步骤S503-S504的实现方式，在此不再赘述。
S907、终端设备确定是否成功接入第二Wi-Fi网络。
在终端设备确定成功过接入第二Wi-Fi网络的情况下，终端设备继续执行步骤S908。在终端设备确定未成功过接入第二Wi-Fi网络的情况下，终端设备回退到第一Wi-Fi网络，接入第一Wi-Fi网络。
可选的，终端第二Wi-Fi网络复用终端设备与第一Wi-Fi网络已建立的协议栈链路进行通信。
S908、终端设备将网络信息更新为第二Wi-Fi网络的信息。
可以理解的，步骤S908的具体实现方式可以参考上述步骤S508的实现方式，在此不再赘述。
S909、终端设备接收第一数据。
可以理解的，步骤S909的具体实现方式可以参考上述步骤S511的实现方式，在此不再赘述。
可选的，在接入点设备支持管理多个网络的数据的情况下，接入点设备可以将第一Wi-Fi网络中缓存的终端设备的第一数据搬迁至第二Wi-Fi网络，并通过该第二Wi-Fi网络向终端设备发送该第一数据，终端设备可以接收该第一数据，从而使得终端设备在网络切换以后，不会丢包，保证完整的正常通信，进一步提升用户体验。
可以理解的，本申请实施例对于上述步骤S901-S909的具体执行顺序并不限定，图9仅是示意性说明。
本申请实施例提供的网络切换方法，终端设备从接入点设备的第一Wi-Fi网络切换为接入点设备的第二Wi-Fi网络时，由于终端设备并未向接入点设备发送去关联请求，因此在切换网络的过程中，终端设备不需要重新获取IP地址，终端设备与接入点设备之间的网络连接一直没有断开，不会出现终端设备的网络断开连接等问题，能够提升用户体验。而且通过终端设备向接入点设备发送指示终端设备处于低功耗模式的第一通知消息，使得接入点设备可以对终端设备的数据进行缓存，避免因第一Wi-Fi网络较差，导致接入点设备向终端设备多次发送的数据均未被终端设备接收时，接入点设备主动将终端踢掉而断开连接的问题出现，可以进一步确保终端设备与接入点设 备之间的网络连接不会断开。并且终端设备可以接收接入点设备在第一Wi-Fi网络缓存的数据，从而使得终端设备在切换网络以后，可以做到零丢包，保证完整的正常通信，进一步提升用户体验。
上述主要从方法步骤的角度对本发明实施例提供的方案进行了介绍。可以理解的是，计算机为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件和计算机软件的结合形式来实现。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本申请实施例可以根据上述方法示例对计算机进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，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。
图10示出了一种网络切换装置1000的结构示意图，该网络切换装置1000可以为上述实施例中的终端设备，还可以为上述终端设备内的芯片。
该网络切换装置1000包括：处理单元1001和收发单元1002。示例性的，收发单元1002可用于支持网络切换装置1000与上述实施例中的接入点设备之间进行通信。处理单元1001用于对上述终端设备的动作进行控制管理，用于执行上述实施例中由终端设备进行的处理，可选的，若网络切换装置1000包括存储单元，则处理单元1001还可以执行存储在存储器中的程序或指令，以使得网络切换装置1000实现上述任一实施例所涉及的方法和功能。
示例性的，上述处理单元1001可以用于执行例如图5中的步骤S501-S504，或，图7中的步骤S508，或，图9中的步骤S901-S904、S906-S908，和/或用于本文所描述的技术的其它过程。收发单元1002可以用于执行例如图7中的步骤S505，或，图8中的步骤S511，图9中的步骤S905和S909，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
示例性的，在硬件实现上，可以由一个处理器执行处理单元1001的功能，可以由收发器(发送器/接收器)和/或通信接口执行收发单元1002的功能，其中，处理单元1001可以以硬件形式内嵌于或独立于网络切换装置1000的处理器中，也可以以软件形式存储于网络切换装置1000的存储器中，以便于处理器调用执行以上各个功能单元对应的操作。
图11示出了一种网络切换装置1100的结构示意图，该网络切换装置可以为上述接入点设备，还可以为上述接入点设备内的芯片，网络切换装置1100可以用于实现上述任一实施例涉及接入点设备(或路由器)的方法和功能。
该网络切换装置1100包括：处理单元1101、第一收发单元1102和第二收发单元1103。其中，第一收发单元1102为接入点设备的第二Wi-Fi网络收发信息的收发单元，第二收发单元1103为接入点设备的第一Wi-Fi网络收发信息的收发单元。示例性的， 第一收发单元1102和第二收发单元1103可用于支持接入点设备与上述实施例中的终端设备之间进行通信。处理单元1101用于对上述接入点设备的动作进行控制管理，用于执行上述实施例中由接入点设备进行的处理，可选的，若网络切换装置1100包括存储单元，则处理单元1101还可以执行存储在存储器中的程序或指令，以使得网络切换装置1100实现上述任一实施例所涉及的方法和功能。
示例性的，上述处理单元1101可以用于执行例如图7中的步骤S507，或，图8中的步骤S509，和/或用于本文所描述的技术的其它过程。第一收发单元1102可以用于执行例如图8中的步骤S510，和/或用于本文所描述的技术的其它过程。第二收发单元1103可以用于执行例如图7中的步骤S506，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
示例性的，在硬件实现上，可以由一个或多个处理器执行处理单元1101的功能，可以由收发器(发送器/接收器)和/或通信接口执行第一收发单元1102或第二收发单元1103的功能，其中，处理单元1101可以以硬件形式内嵌于或独立于网络切换装置1100的处理器中，也可以以软件形式存储于网络切换装置1100的存储器中，以便于处理器调用执行以上各个功能单元对应的操作。
可选的，上述处理单元1101的功能可以由一个或多个处理器执行。当处理单元1101的功能可以由多个处理器执行时，该多个处理器可以分别用于执行不同无线网络中相应的功能。例如，网络切换装置1100可以包括第一处理器和第二处理器，第一处理器和第二处理器分别对应第一Wi-Fi网络和第二Wi-Fi网络，第一处理器可以用于处理第一Wi-Fi网络的相关功能，第二处理器用于处理第二Wi-Fi网络的相关功能。
本申请实施例还提供一种终端设备，该终端设备包括处理器，还可以包括收发器以及存储器，收发器，用于收发信息，或者用于与其他通信设备通信；存储器，用于存储计算机执行指令；处理器，用于执行所计算机执行指令，以支持终端设备实现图5、图7、图8、图9任一实施例中的网络切换方法。
本申请实施例还提供一种接入点设备，该接入点设备包括处理器，还可以包括收发器以及存储器，收发器，用于收发信息，或者用于与其他通信设备通信；存储器，用于存储计算机执行指令；处理器，用于执行所计算机执行指令，以支持接入点设备实现图5、图7或图8任一实施例中的网络切换方法。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行图5、图7、图8、图9任一实施例中的网络切换方法。
本申请实施例还提供了一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行图5、图7、图8、图9任一实施例中的网络切换方法。
本申请实施例还提供了一种网络切换装置，该装置可以以芯片的产品形态存在，该装置的结构中包括处理器和接口电路，该处理器用于通过接收电路与其它装置通信，使得该装置执行图5、图7、图8、图9任一实施例中的网络切换方法。
本申请实施例还提供了一种网络切换系统，包括终端设备和接入点设备，该终端设备和接入点设备可以执行图5、图7或图8任一实施例中的网络切换方法。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于核心网接口设备中。当然，处理器和存储介质也可以作为分立组件存在于核心网接口设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (32)

  1. 一种网络切换方法，其特征在于，所述方法包括：
    终端设备检测所述终端设备连接至接入点设备的第一无线保真Wi-Fi网络的网络参数；
    在所述第一Wi-Fi网络的网络参数满足预设条件的情况下，所述终端设备发起扫描；
    若所述终端设备扫描到所述接入点设备的第二Wi-Fi网络，且所述终端设备关联过所述第二Wi-Fi网络，则所述终端设备获取所述第二Wi-Fi网络的认证信息；其中，所述第二Wi-Fi网络和所述第一Wi-Fi网络各自的服务集标识SSID不同；
    基于所述第二Wi-Fi网络的认证信息，所述终端设备接入所述第二Wi-Fi网络；所述第二Wi-Fi网络复用所述终端设备与所述第一Wi-Fi网络已建立的协议栈链路进行通信。
  2. 根据权利要求1所述的方法，其特征在于，所述第一Wi-Fi网络和所述第二Wi-Fi网络的频段不同。
  3. 根据权利要求2所述的方法，其特征在于，所述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，所述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述第一Wi-Fi网络为家庭网络，所述第二Wi-Fi网络为访客网络；或者，所述第一Wi-Fi网络为访客网络，所述第二Wi-Fi网络为家庭网络。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述终端设备接入所述第二Wi-Fi网络之前，所述方法还包括：
    所述终端设备向所述接入点设备发送第一通知消息，所述第一通知消息用于指示所述终端设备处于低功耗模式。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述接入点设备通过所述第二Wi-Fi网络发送的第一数据，所述第一数据为所述接入点设备通过所述第一Wi-Fi网络缓存的数据。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述终端设备发起扫描，包括：
    所述终端设备基于所述第二Wi-Fi网络的信道信息，发起扫描。
  8. 根据权利要求1-7中任一项所述的方法，其特征在于，所述第一Wi-Fi网络的网络参数满足预设条件包括：所述第一Wi-Fi网络的质量低于第一预设阈值或所述第一Wi-Fi网络的传输速率低于第二预设阈值。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备将网络信息更新为所述第二Wi-Fi网络的信息。
  10. 一种网络切换方法，其特征在于，所述方法包括：
    接入点设备的第二无线保真Wi-Fi网络与终端设备建立连接；其中，所述第二Wi-Fi网络复用所述终端设备与所述接入点设备的第一Wi-Fi网络已建立的协议栈链路进行通信，所述第二Wi-Fi网络和所述第一Wi-Fi网络各自的服务集标识SSID不同。
  11. 根据权利要求10所述的方法，其特征在于，所述第一Wi-Fi网络和所述第二 Wi-Fi网络的频段不同。
  12. 根据权利要求11所述的方法，其特征在于，所述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，所述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
  13. 根据权利要求10-12中任一项所述的方法，其特征在于，所述第一Wi-Fi网络为家庭网络，所述第二Wi-Fi网络为访客网络；或者，所述第一Wi-Fi网络为访客网络，所述第二Wi-Fi网络为家庭网络。
  14. 根据权利要求10-13中任一项所述的方法，其特征在于，所述接入点设备的第二无线保真Wi-Fi网络与终端设备建立连接之前，所述方法还包括：
    所述接入点设备接收来自所述终端设备的第一通知消息，所述第一通知消息用于指示所述终端设备处于低功耗模式；
    所述接入点设备基于所述第一通知消息，通过所述第一Wi-Fi网络缓存所述终端设备的第一数据。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述接入点设备将所述第一数据从所述第一Wi-Fi网络搬迁至所述第二Wi-Fi网络；
    所述接入点设备通过所述第二Wi-Fi网络向所述终端设备发送所述第一数据。
  16. 一种终端设备，其特征在于，所述终端设备包括：收发器和处理器；
    所述处理器，用于检测所述终端设备连接至接入点设备的第一无线保真Wi-Fi网络的网络参数；
    在所述第一Wi-Fi网络的网络参数满足预设条件的情况下，所述处理器发起扫描；
    若所述处理器扫描到所述接入点设备的第二Wi-Fi网络，且所述终端设备关联过所述第二Wi-Fi网络，则所述处理器获取所述第二Wi-Fi网络的认证信息；其中，所述第二Wi-Fi网络和所述第一Wi-Fi网络各自的服务集标识SSID不同；
    基于所述第二Wi-Fi网络的认证信息，所述处理器通过所述收发器接入所述第二Wi-Fi网络；所述第二Wi-Fi网络复用所述终端设备与所述第一Wi-Fi网络已建立的协议栈链路进行通信。
  17. 根据权利要求16所述的终端设备，其特征在于，所述第一Wi-Fi网络和所述第二Wi-Fi网络的频段不同。
  18. 根据权利要求17所述的终端设备，其特征在于，所述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，所述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
  19. 根据权利要求16-18中任一项所述的终端设备，其特征在于，所述第一Wi-Fi网络为家庭网络，所述第二Wi-Fi网络为访客网络；或者，所述第一Wi-Fi网络为访客网络，所述第二Wi-Fi网络为家庭网络。
  20. 根据权利要求16-19中任一项所述的终端设备，其特征在于，所述收发器，还用于：
    向所述接入点设备发送第一通知消息，所述第一通知消息用于指示所述终端设备处于低功耗模式。
  21. 根据权利要求20所述的终端设备，其特征在于，所述收发器，还用于：
    接收所述接入点设备通过所述第二Wi-Fi网络发送的第一数据，所述第一数据为 所述接入点设备通过所述第一Wi-Fi网络缓存的数据。
  22. 根据权利要求16-21中任一项所述的终端设备，其特征在于，所述处理器，具体用于：
    基于所述第二Wi-Fi网络的信道信息，发起扫描。
  23. 根据权利要求16-22中任一项所述的终端设备，其特征在于，所述第一Wi-Fi网络的网络参数满足预设条件包括：所述第一Wi-Fi网络的质量低于第一预设阈值或所述第一Wi-Fi网络的传输速率低于第二预设阈值。
  24. 根据权利要求16-23中任一项所述的终端设备，其特征在于，所述处理器，还用于：
    将网络信息更新为所述第二Wi-Fi网络的信息。
  25. 一种接入点设备，其特征在于，所述接入点设备包括：第一收发器和处理器；其中，所述第一收发器为所述接入点设备的第二无线保真Wi-Fi网络收发信息的收发器；
    所述处理器，用于通过所述第一收发器与终端设备建立连接；其中，所述第二Wi-Fi网络复用所述终端设备与所述接入点设备的第一Wi-Fi网络已建立的协议栈链路进行通信，所述第二Wi-Fi网络和所述第一Wi-Fi网络各自的服务集标识SSID不同。
  26. 根据权利要求25所述的接入点设备，其特征在于，所述第一Wi-Fi网络和所述第二Wi-Fi网络的频段不同。
  27. 根据权利要求26所述的接入点设备，其特征在于，所述第一Wi-Fi网络的频段为2.4GHz、5GHz或6GHz，所述第二Wi-Fi网络的频段为2.4GHz、5GHz或6GHz。
  28. 根据权利要求25-27中任一项所述的接入点设备，其特征在于，所述第一Wi-Fi网络为家庭网络，所述第二Wi-Fi网络为访客网络；或者，所述第一Wi-Fi网络为访客网络，所述第二Wi-Fi网络为家庭网络。
  29. 根据权利要求25-28中任一项所述的接入点设备，其特征在于，所述接入点设备还包括第二收发器，所述第二收发器为所述接入点设备的所述第一Wi-Fi网络收发信息的收发器；
    所述第二收发器，用于接收来自所述终端设备的第一通知消息，所述第一通知消息用于指示所述终端设备处于低功耗模式；
    所述处理器，还用于基于所述第一通知消息，通过所述第二收发器缓存所述终端设备的第一数据。
  30. 根据权利要求29所述的接入点设备，其特征在于，
    所述处理器，还用于将所述第一数据从所述第一Wi-Fi网络搬迁至所述第二Wi-Fi网络；
    所述第一收发器，还用于向所述终端设备发送所述第一数据。
  31. 一种网络切换系统，其特征在于，所述系统包括终端设备和接入点设备，所述终端设备用于执行如权利要求1-9中任一项所述的网络切换方法，所述接入点设备用于执行如权利要求10-15中任一项所述的网络切换方法。
  32. 一种计算机可读存储介质，所述计算机可读存储介质中具有计算机程序代码，其特征在于，当所述计算机程序代码在处理器上运行时，使得所述处理器执行如权利 要求1-15中任一项所述的网络切换方法。
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