CN105516957B - NAN network channel switching method and device - Google Patents

NAN network channel switching method and device Download PDF

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Publication number
CN105516957B
CN105516957B CN201510862910.5A CN201510862910A CN105516957B CN 105516957 B CN105516957 B CN 105516957B CN 201510862910 A CN201510862910 A CN 201510862910A CN 105516957 B CN105516957 B CN 105516957B
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channel
equipment
mobile terminal
nan network
switching
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CN105516957A (en
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李娜
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Qingdao Haier Intelligent Home Appliance Technology Co Ltd
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Qingdao Haier Intelligent Home Appliance Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a method and a device for NAN network channel conversion, wherein the flow executed by a mobile terminal side by the method comprises the following steps: the method comprises the steps that NAN network connection is established between a mobile terminal and routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment; when the distance between the mobile terminal and the opposite side equipment exceeds the corresponding distance threshold, the use of the main channel is switched to use of a lower frequency channel to control the home equipment, and the opposite side equipment comprises: routing equipment and/or home equipment. According to the method and the device, the NAN network connections on different frequency bands use the same synchronization time, communication interruption can be avoided after switching between different channels, and the instantaneity of the mobile terminal on the control command of the household equipment is guaranteed.

Description

NAN network channel switching method and device
Technical Field
The invention relates to the technical field of intelligent home connection control, in particular to a method and a device for NAN network channel conversion.
Background
The Wi-Fi alliance has established a standard specification for NAN (Neighbor advertisement Network, near discovery Network). The specification aims at low power consumption and fast discovery of services provided by surrounding devices before connection establishment.
The NAN technology performs service discovery in an agreed discovery time window through time synchronization. Two broad classes of messages are defined in the current standards: beacon messages and service discovery messages. The Beacon message is divided into a synchronization Beacon message and a discovery Beacon message. The discovery Beacon message is transmitted outside a discovery time window and used for discovering NAN Cluster, wherein the NAN Cluster is a group consisting of a plurality of devices, and in the group, the time synchronization of the devices uses the same time window for service discovery; the sync Beacon message is used to time synchronize devices within the NAN Cluster. The service discovery message is used in a discovery time window and is used for discovering services provided by other devices in the NAN Cluster.
The NAN Cluster may operate on channels of different frequency bands, but the discovery time windows of each channel need to be staggered and may not be performed simultaneously, so that the same device may be added to different NAN clusters.
In a home domain, a mobile terminal is generally used as a controller for controlling home devices, and since a 2.4GHz channel may not meet a communication requirement when the mobile terminal moves to a place far away from the home devices in a home environment, a channel of a lower frequency band needs to be used for communication.
However, the operating time windows of different frequency bands in the NAN network are not consistent, which may cause communication interruption after the handover.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for channel switching of a NAN network, so as to avoid communication interruption when the NAN network is switched between multiple frequency channels.
The technical scheme adopted by the invention is that the NAN network channel switching method comprises the following steps of:
the method comprises the steps that NAN network connection is established between a mobile terminal and routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization;
any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
when the distance between the mobile terminal and the opposite side equipment exceeds the corresponding distance threshold, the use of the main channel is switched to use of a lower frequency channel to control the home equipment, and the opposite side equipment comprises: routing equipment and/or home equipment; the lower frequency channel is one of the two or more channels having a lower frequency than the primary channel.
Further, the interacting with the home device by using the main channel includes:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
Further, the process executed at the mobile terminal side further includes:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
Further, whether the distance between the mobile terminal and the opposite device exceeds the corresponding distance threshold value is detected by the mobile terminal based on the NAN network distance measuring mode Ranging, or the opposite device detects and informs the mobile terminal based on the NAN network distance measuring mode Ranging.
Further, the process executed at the mobile terminal side further includes:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
Further, when the peer device is a home device and NAN network connection is also established between the routing device and the home device on the two or more channels, the process executed at the mobile terminal side further includes:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
The invention also provides a method for switching NAN network channels, and the flow executed on the routing equipment side comprises the following steps:
the method comprises the steps that NAN network connection is established between routing equipment and opposite equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment;
any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the opposite side equipment;
when the distance between the routing device and the opposite device exceeds the corresponding distance threshold, the use of the main channel is switched to use of a lower frequency channel to interact with the opposite device, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
Further, when the peer device is a mobile terminal, and when the peer device is a mobile terminal, the process executed by the routing device side further includes: and establishing NAN network connection between the routing equipment and the household equipment on the main channel.
Further, using the active channel to interact with the opposite device includes:
and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively.
Further, the process executed on the routing device side further includes:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
Further, whether the distance between the routing device and the other device exceeds the corresponding distance threshold value is detected by the routing device based on the NAN network distance measuring method Ranging, or the mobile terminal detects and informs the routing device based on the NAN network distance measuring method Ranging.
Further, the process executed on the routing device side further includes:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
Further, in a case that the counterpart device includes a mobile terminal and a home device, the process executed on the routing device side further includes:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
The invention also provides a NAN network channel conversion method, and the flow executed at the home equipment side comprises the following steps:
the method comprises the steps that NAN network connection is established between home equipment and routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
and when the distance between the home equipment and the mobile terminal exceeds a first distance threshold or the distance between the mobile terminal and the routing equipment exceeds a second distance threshold, switching from using the main channel to using a lower frequency channel to interact with the routing equipment or the mobile terminal, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
Further, whether the distance between the home equipment and the mobile terminal exceeds the first distance threshold value is detected by the home equipment based on the NAN network distance measuring mode Ranging, or the home equipment is detected by the mobile terminal based on the NAN network distance measuring mode Ranging and is informed of the distance.
Further, the process executed at the home device side further includes:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
Further, the channel switching of the home device between the main channel and the lower frequency channel is performed based on the notification of the mobile terminal or the routing device.
The invention also provides a device for switching NAN network channels, which is arranged at the side of the mobile terminal and comprises:
the first channel determining module is used for establishing NAN network connection on more than two channels between the mobile terminal and the routing equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
a first switching control module, configured to switch from using the primary channel to using a lower frequency channel to control the home device when a distance between the mobile terminal and an opposite device exceeds a corresponding distance threshold, where the opposite device includes: routing equipment and/or home equipment; the lower frequency channel is one of the two or more channels having a lower frequency than the primary channel.
Further, the first switching control module is specifically configured to:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
Further, the first switching control module is further configured to:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
Further, whether the distance between the mobile terminal and the opposite device exceeds the corresponding distance threshold value is detected by the mobile terminal based on the NAN network distance measuring mode Ranging, or the opposite device detects and informs the mobile terminal based on the NAN network distance measuring mode Ranging.
Further, the first switching control module is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
Further, in a case that the other device is a home device and NAN network connection is also established between the routing device and the home device on the two or more channels, the switching control module is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
The invention also provides a device for switching NAN network channels, which is arranged at the side of the routing equipment, and the device comprises:
the second channel determination module is used for establishing NAN network connection on more than two channels between the routing equipment and the opposite equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the opposite side equipment;
and the second switching control module is used for switching the use of the main channel into the use of a lower frequency channel to interact with the opposite equipment when the distance between the routing equipment and the opposite equipment exceeds a corresponding distance threshold, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
Further, in a case that the opposite device is a mobile terminal, the second channel determining module is further configured to: and establishing NAN network connection on the main channel between the routing equipment and the household equipment.
Further, using the active channel to interact with the opposite device includes:
and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively.
Further, the second switching control module is further configured to:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
Further, whether the distance between the routing device and the other device exceeds the corresponding distance threshold value is detected by the routing device based on the NAN network distance measuring method Ranging, or the mobile terminal detects and informs the routing device based on the NAN network distance measuring method Ranging.
Further, the second switching control module is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
Further, in a case that the counterpart device includes a mobile terminal and a home device, the second switching control module is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
The invention also provides a device for switching NAN network channels, which is arranged at the side of the household equipment, and the device comprises:
the third channel determining module is used for establishing NAN network connection on more than two channels between the household equipment and the routing equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
and the third switching control module is used for switching from using the main channel to using a lower frequency channel to interact with the routing equipment or the mobile terminal when the distance between the household equipment and the mobile terminal exceeds the first distance threshold or the distance between the mobile terminal and the routing equipment exceeds the second distance threshold, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
Further, the third switching control module is further configured to:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
Further, whether the distance between the home equipment and the mobile terminal exceeds the first distance threshold value is detected by the home equipment based on the NAN network distance measuring mode Ranging, or the home equipment is detected by the mobile terminal based on the NAN network distance measuring mode Ranging and is informed of the distance.
Further, the channel switching between the main channel and the lower frequency channel by the third switching control module is performed based on the notification of the mobile terminal or the routing device.
The invention also provides a mobile terminal which comprises the NAN network channel switching device arranged on the mobile terminal side.
The invention also provides a routing device, which comprises the NAN network channel conversion device arranged on the routing device side.
The invention also provides household equipment which comprises the NAN network channel conversion device arranged on the household equipment side.
By adopting the technical scheme, the invention at least has the following advantages:
according to the method and the device for switching the NAN network channels, the same synchronization time is used for the connection of the NAN networks on different frequency bands in a home environment, namely the same discovery time window is used for the connection of the NAN networks of different channels, so that communication interruption can be avoided after switching between different channels, and the immediate effect of a control command of a mobile terminal on home equipment is ensured. According to the invention, when the mobile terminal is far away from the router or the gateway, the communication is carried out by using the lower frequency channel, so that the communication interference can be reduced. Under the condition that the household equipment only works in the main channel, the mobile terminal and the routing equipment switch channels, so that the power consumption of the household equipment can be reduced, and the complexity of the household equipment is reduced.
Drawings
Fig. 1 is a flowchart of a NAN network channel switching method according to a first embodiment of the present invention;
fig. 2 is a flowchart of a NAN network channel switching method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a method for NAN network channel switching according to a third embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an apparatus for NAN network channel switching according to a fourth embodiment of the present invention;
fig. 5 is a schematic diagram illustrating an apparatus for NAN network channel switching according to a fifth embodiment of the present invention;
fig. 6 is a schematic diagram illustrating an apparatus for NAN network channel switching according to a sixth embodiment of the present invention;
fig. 7 is a schematic diagram of a channel switching process of application example one in the tenth embodiment of the present invention;
fig. 8 is a schematic diagram of a channel switching process of a second application example in a tenth embodiment of the present invention;
fig. 9 is a schematic diagram of a channel switching process of a third application example in a tenth embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
In a first embodiment of the present invention, a method for NAN network channel switching, as shown in fig. 1, a flow executed by the method at a mobile terminal side includes the following specific steps:
step S101, NAN network connection is established between a mobile terminal and a routing device on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization;
step S102, any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
step S103, when the distance between the mobile terminal and the opposite side equipment exceeds the corresponding distance threshold, the use of the main channel is switched to use of a lower frequency channel to control the home equipment, and the opposite side equipment comprises: routing equipment and/or home equipment; the lower frequency channel is one of the two or more channels having a lower frequency than the primary channel.
Specifically, in step S103, the interacting with the home device using the active channel includes:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
Preferably, the process executed by the mobile terminal side in this embodiment further includes:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
In this embodiment, whether the distance between the mobile terminal and the peer device exceeds the corresponding distance threshold is detected by the mobile terminal based on the NAN network distance measuring method Ranging, or is detected by the peer device based on the NAN network distance measuring method Ranging and notified to the mobile terminal.
Preferably, the process executed at the mobile terminal side further includes:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
Further, in this embodiment, when the peer device is a home device and NAN network connections are also established between the routing device and the home device on the two or more channels, the process executed at the mobile terminal side further includes:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out corresponding channel switching so that the household equipment can interact with the routing equipment or the mobile terminal by using the switched channel.
The present embodiment designs the notification mechanism to take the following scenarios into consideration: the NAN network connection is established between the home equipment and the routing equipment based on more than two channels, the more than two channels have the same discovery time window, the home equipment and the routing equipment are controlled by using the main channel, the home equipment can also be switched to a lower-frequency channel from the main channel at the moment, and if the home equipment does not have the function of detecting the distance, the channel switching cannot be triggered, so that the home equipment is informed to synchronously perform corresponding channel switching when the mobile terminal is required to perform channel switching.
In a second embodiment of the present invention, a NAN network channel switching method, as shown in fig. 2, a flow executed by the method on a routing device side includes the following specific steps:
step S201, NAN network connection is established between routing equipment and opposite equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment;
specifically, when the opposite device includes a mobile terminal and a home device, the routing device may establish NAN network connection with the mobile terminal and the home device based on two or more channels, and perform interaction using the main channel in step S202.
When the opposite device is a mobile terminal, in order to implement control of the subsequent mobile terminal on the home device, a description needs to be given of a channel establishment situation between the routing device and the home device, and therefore the process executed on the routing device side further includes: and establishing NAN network connection between the routing equipment and the household equipment on the main channel.
Step S202, using any one of the above two or more channels except the channel with the lowest frequency as a main channel to interact with the opposite device;
step S203, when the distance between the routing device and the opposite device exceeds the corresponding distance threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite device, where the lower frequency channel is one of the two or more channels whose frequency is lower than the main channel.
Specifically, in step S202, using the active channel to interact with the opposite device includes:
and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively. Such as: and when the main channel is used for receiving a control command of the mobile terminal to the household equipment, forwarding the control command to the corresponding household equipment through the main channel.
Preferably, the process executed by the method of this embodiment on the routing device side further includes:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
In this embodiment, whether the distance between the routing device and the peer device exceeds the corresponding distance threshold is detected by the routing device based on the NAN network distance measuring method Ranging, or is detected by the mobile terminal based on the NAN network distance measuring method Ranging and notified to the routing device.
Preferably, the process executed by the method on the routing device side further includes:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
Further, in this embodiment, in a case that the opposite device includes a mobile terminal and a home device, the process executed on the routing device side further includes:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out corresponding channel switching so that the household equipment can interact with the routing equipment or the mobile terminal by using the switched channel.
The present embodiment designs the notification mechanism to take the following scenarios into consideration: the NAN network connection is established between the home equipment and the routing equipment based on more than two channels, the more than two channels have the same discovery time window, the home equipment and the routing equipment are controlled by using the main channel, the home equipment can also be switched to a lower-frequency channel from the main channel at the moment, and if the home equipment does not have the function of detecting the distance, the channel switching cannot be triggered, so that the home equipment is informed to synchronously perform corresponding channel switching when the mobile terminal is required to perform channel switching.
In a third embodiment of the present invention, a method for NAN network channel switching, as shown in fig. 3, a flow executed by a home device in the method includes the following specific steps:
step S301, NAN network connection is established between the home equipment and the routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
step S302, when the distance between the home device and the mobile terminal exceeds a first distance threshold or the distance between the mobile terminal and the routing device exceeds a second distance threshold, switching from using the main channel to using a lower frequency channel to interact with the routing device or the mobile terminal, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
Specifically, whether the distance between the home device and the mobile terminal exceeds the first distance threshold is detected by the home device based on the NAN network distance measuring mode Ranging, or the mobile terminal detects and informs the home device based on the NAN network distance measuring mode Ranging.
The distance between the mobile terminal and the routing device exceeds the second distance threshold value, which is detected by the mobile terminal based on the NAN network distance measuring mode Ranging, or detected by the routing device based on the NAN network distance measuring mode Ranging. Subsequently, when the mobile terminal or the router detects that the distance between the mobile terminal and the routing device exceeds a second distance threshold, the home equipment is notified to switch the main channel to a lower frequency channel.
Preferably, the process executed by the method of this embodiment on the home equipment side further includes:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
Further, in this embodiment, if the home device fails to trigger channel switching due to lack of the function of detecting the distance, the channel switching between the main channel and the lower frequency channel by the home device is performed based on the notification of the mobile terminal or the routing device.
A fourth embodiment of the present invention is a NAN network channel switching apparatus, which is disposed at a mobile terminal side, and is corresponding to the first embodiment, as shown in fig. 4, and includes the following components:
1) a first channel determining module 401, configured to establish a NAN network connection between a mobile terminal and a routing device on two or more channels, where the NAN network connection established on the two or more channels has a discovery time window synchronized with time; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
2) a first switching control module 402, configured to switch, when a distance between the mobile terminal and an opposite device exceeds a corresponding distance threshold, from using the main channel to using a lower frequency channel to control the home device, where the opposite device includes: routing equipment and/or home equipment; the lower frequency channel is one of the two or more channels having a lower frequency than the primary channel.
Specifically, the first switching control module 402 is specifically configured to:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
Preferably, the first switching control module 402 of this embodiment is further configured to:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
Further, the distance parameter referred by the first switching control module 402 of this embodiment when performing channel switching, that is, whether the distance between the mobile terminal and the peer device exceeds the corresponding distance threshold, is detected by the mobile terminal based on the NAN network distance measuring method Ranging, or is detected by the peer device based on the NAN network distance measuring method Ranging and notified to the mobile terminal.
Preferably, the first switching control module 402 of this embodiment is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
Further, in a case that the opposite device is a home device and NAN network connection is also established between the routing device and the home device on the two or more channels, the switching control module 402 of this embodiment is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out corresponding channel switching so that the household equipment can interact with the routing equipment or the mobile terminal by using the switched channel.
A fifth embodiment of the present invention is a device for NAN network channel switching, which is disposed on a routing device side, and corresponds to the second embodiment, and as shown in fig. 5, the device includes the following components:
1) a second channel determining module 501, configured to establish a NAN network connection between the routing device and a peer device over two or more channels, where the NAN network connection established over the two or more channels has a discovery time window synchronized in time; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the opposite side equipment;
specifically, in a case that the opposite device is a mobile terminal, the second channel determining module is further configured to: and establishing NAN network connection between the routing equipment and the household equipment based on the main channel.
2) A second switching control module 502, configured to switch, when the distance between the routing device and the opposite device exceeds a corresponding distance threshold, from using the main channel to using a lower frequency channel to interact with the opposite device, where the lower frequency channel is one of the two or more channels whose frequency is lower than that of the main channel.
Specifically, the second switching control module 502 is configured to: and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively. Such as: and when the main channel is used for receiving a control command of the mobile terminal to the household equipment, forwarding the control command to the corresponding household equipment through the main channel.
Preferably, the second switching control module 502 of this embodiment is further configured to:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
In this embodiment, whether the distance between the routing device and the peer device exceeds the corresponding distance threshold is detected by the routing device based on the NAN network distance measuring method Ranging, or is detected by the mobile terminal based on the NAN network distance measuring method Ranging and notified to the routing device.
Preferably, the second switching control module 402 is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
Further, in this embodiment, in a case that the opposite device includes a mobile terminal and a home device, the second switching control module 402 is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out corresponding channel switching so that the household equipment can interact with the routing equipment or the mobile terminal by using the switched channel.
A sixth embodiment of the present invention is a device for NAN network channel conversion, which is disposed on a home device side, and corresponds to the third embodiment, and as shown in fig. 6, the device includes the following components:
1) a third channel determining module 601, configured to establish a NAN network connection between the home device and the routing device on two or more channels, where the NAN network connection established on the two or more channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
2) a third switching control module 602, configured to switch, when a distance between the home device and the mobile terminal exceeds a first distance threshold or a distance between the mobile terminal and the routing device exceeds a second distance threshold, from using the primary channel to using a lower frequency channel to interact with the routing device or the mobile terminal, where the lower frequency channel is one of the more than two channels whose frequency is lower than the primary channel.
Specifically, whether the distance between the home device and the mobile terminal exceeds the first distance threshold is detected by the home device based on the NAN network distance measuring mode Ranging, or the mobile terminal detects and informs the home device based on the NAN network distance measuring mode Ranging.
Preferably, the third switching control module 602 of this embodiment is further configured to:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
Further, in this embodiment, if the home device fails to trigger channel switching due to lack of the function of detecting the distance, the channel switching performed by the third switching control module 602 between the main channel and the lower frequency channel is performed based on the notification of the mobile terminal or the routing device.
A seventh embodiment of the present invention, a mobile terminal, may be understood as an entity device, and includes the NAN network channel switching device according to the fourth embodiment.
An eighth embodiment of the present invention, which is a routing device, can be understood as an entity device, and includes the NAN network channel switching device described in the fifth embodiment.
A ninth embodiment of the present invention, which is a home device, can be understood as an entity device, and includes the NAN network channel switching device described in the sixth embodiment.
The tenth embodiment of the present invention is based on the above embodiments, and three application examples of the present invention are described with reference to fig. 7 to 9.
Application example one:
as shown in fig. 7, the channel switching process includes the following three phases:
the first stage is as follows: the steps when establishing a connection are as follows:
1. a router or gateway (i.e., the routing device in the above embodiment) may operate in multiple frequency bands simultaneously.
2. The mobile terminal and the router or gateway establish a NAN network connection over multiple channels that use the same synchronized clock, i.e., have the same discovery time window. One of the channels is a primary usage channel (i.e., the primary channel in the above embodiment).
3. And the household equipment and the router or the gateway establish NAN network connection on the main use channel.
And a second stage: the steps when the mobile terminal is far away from the router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network. Specifically, a Ranging mode is adopted for Ranging, and the Ranging mode is the prior art, so that the detailed description is omitted here.
2. And when the mobile terminal finds that the currently used channel does not meet the required communication quality, or the distance between the mobile terminal and the router or the gateway exceeds a set threshold value, switching to the channel of the lower-frequency NAN network. For example, from a channel at 2.4GHz frequency to a channel at 900Mz frequency.
3. When the router or the gateway finds that the mobile terminal is far away and the currently used channel does not meet the required communication quality, or the distance between the router or the gateway and the mobile terminal exceeds a set threshold value, the router or the gateway and the mobile terminal both start a NAN network using a lower frequency channel.
4. When the mobile terminal using the low-frequency channel sends a control command to the household equipment, the control command is firstly sent to the router or the gateway.
5. And the router or the gateway forwards the command to the destination household equipment by using the main use channel.
And a third stage: the steps when the mobile terminal returns to the proximity router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network.
2. And when the mobile terminal finds that the distance between the mobile terminal and the router or the gateway enters a set threshold value, switching to a main use channel of the NAN network. For example, from a channel at 900Mz frequency to a channel at 2.4GHz frequency.
3. And when the router or the gateway finds that the mobile terminal is close and the distance between the mobile terminal and the router or the gateway enters a set threshold value, closing the NAN network using the low-frequency channel.
4. The mobile terminal directly sends the command to the target household equipment by using the main use channel.
Application example two:
as shown in fig. 8, the channel switching process includes the following three phases:
the first stage is as follows: the steps when establishing a connection are as follows:
1. a router or gateway may operate in multiple frequency bands simultaneously.
2. The mobile terminal and the household equipment establish NAN network connection with the router or the gateway on a plurality of channels, and the channels use the same synchronous clock.
And a second stage: the steps when the mobile terminal is far away from the router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network.
2. And when the mobile terminal finds that the currently used channel does not meet the required communication quality, or the distance between the mobile terminal and the router or the gateway exceeds a set threshold value, switching to the channel of the lower-frequency NAN network. For example, from a channel at 2.4GHz frequency to a channel at 900Mz frequency.
3. And when the router or the gateway finds that the mobile terminal is far away and the currently used channel does not meet the required communication quality, or the distance between the router or the gateway and the mobile terminal exceeds a set threshold value, starting the NAN network using the low-frequency channel.
4. And the router or the gateway sends NAN network notification for switching to use the low-frequency channel to the household equipment. Such as 900MHz channels.
5. And the household equipment is switched to the NAN network of the low-frequency channel. Such as 900MHz channels.
6. The mobile terminal sends a control command to the household equipment by using the NAN of the low-frequency channel.
And a third stage: the steps when the mobile terminal returns to the proximity router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network.
2. And when the mobile terminal finds that the distance between the mobile terminal and the router or the gateway enters a set threshold value, switching to a high-frequency channel of the NAN network. For example, from a channel at 900Mz frequency to a channel at 2.4GHz frequency.
3. And when the router or the gateway finds that the mobile terminal is close and the distance between the mobile terminal and the router or the gateway enters a set threshold value, closing the NAN network using the low-frequency channel.
4. And the router or the gateway sends NAN network notification for switching to use the high-frequency channel to the household equipment. Such as 2.4GHz channels.
Application example three:
as shown in fig. 9, the channel switching process includes the following three phases:
the first stage is as follows: the steps when establishing a connection are as follows:
1. a router or gateway may operate in multiple frequency bands simultaneously.
2. The mobile terminal and the household equipment establish NAN network connection with the router or the gateway on a plurality of channels, and the channels use the same synchronous clock.
And a second stage: the steps when the mobile terminal is far away from the router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network.
2. The home equipment measures the distance of the mobile terminal by using a Ranging mode of a NAN network.
3. And when the mobile terminal finds that the currently used channel does not meet the required communication quality, or the distance between the mobile terminal and the router or the gateway exceeds a set threshold value, switching to the channel of the lower-frequency NAN network. For example, from a channel at 2.4GHz frequency to a channel at 900Mz frequency.
4. When the router or the gateway and the household equipment find that the mobile terminal is far away and the currently used channel does not meet the required communication quality, or the distance between the router or the gateway and the mobile terminal or the distance between the household equipment and the mobile terminal exceeds a set threshold value, the NAN network using the low-frequency channel is switched.
5. The mobile terminal sends a control command to the household equipment by using the NAN of the low-frequency channel.
And a third stage: the steps when the mobile terminal returns to the proximity router or the gateway are as follows:
1. and distance measurement is carried out between the mobile terminal and the router or the gateway through the NAN network.
2. The home equipment measures the distance of the mobile terminal by using a NAN network distance measuring technology.
3. And when the mobile terminal finds that the distance between the mobile terminal and the router or the gateway enters a set threshold value, switching to a high-frequency channel of the NAN network. For example, from a channel at 900Mz frequency to a channel at 2.4GHz frequency.
4. When the router or the gateway and the household equipment find that the mobile terminal is close and the distance between the router or the gateway and the household equipment enters a set threshold value, the NAN network using the high-frequency channel is switched. Such as 2.4GHz channels.
According to the method and the device for switching the NAN network channels, the NAN network connections on different frequency bands use the same synchronous time in a home environment, namely the NAN network connections of different channels use the same discovery time window, communication interruption can be avoided after switching between different channels, and the instantaneity of a control command of a mobile terminal to home equipment is guaranteed. According to the invention, when the mobile terminal is far away from the router or the gateway, the communication is carried out by using the lower frequency channel, so that the communication interference can be reduced. Under the condition that the household equipment only works in the main channel, the mobile terminal and the routing equipment switch channels, so that the power consumption of the household equipment can be reduced, and the complexity of the household equipment is reduced.
While the invention has been described in connection with specific embodiments thereof, it is to be understood that it is intended by the appended drawings and description that the invention may be embodied in other specific forms without departing from the spirit or scope of the invention.

Claims (33)

1. A method for NAN network channel switching, wherein a flow executed at a mobile terminal side comprises:
the method comprises the steps that NAN network connection is established between a mobile terminal and routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization;
any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
when the distance between the mobile terminal and the opposite side equipment exceeds the corresponding distance threshold, the use of the main channel is switched to use of a lower frequency channel to control the home equipment, and the opposite side equipment comprises: routing equipment and/or home equipment; the lower frequency channel is one of the more than two channels, the frequency of which is lower than that of the main channel;
the interaction with the household equipment by using the main channel comprises the following steps:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
2. The method for NAN network channel switching according to claim 1, wherein the process performed at the mobile terminal side further comprises:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
3. The NAN network channel switching method of claim 1 or 2, wherein whether the distance between the mobile terminal and the peer device exceeds the corresponding distance threshold is detected by the mobile terminal based on a NAN network distance measuring method Ranging, or is detected by the peer device based on the NAN network distance measuring method Ranging and notified to the mobile terminal.
4. The method for NAN network channel switching according to claim 1, wherein the process performed at the mobile terminal side further comprises:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
5. The method of NAN network channel switching according to claim 1, 2 or 4, wherein the process executed at the mobile terminal side, when the peer device is a home device and NAN network connection is also established between the routing device and the home device on the two or more channels, further comprises:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
6. A NAN network channel switching method is characterized in that a flow executed on a routing device side comprises the following steps:
the method comprises the steps that NAN network connection is established between routing equipment and opposite equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment;
any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the opposite side equipment;
when the distance between the routing equipment and the opposite equipment exceeds the corresponding distance threshold value, switching from using a main channel to using a lower frequency channel to interact with the opposite equipment, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel;
in a case where the opposite device is a mobile terminal, the process executed on the routing device side further includes: and establishing NAN network connection between the routing equipment and the household equipment on the main channel.
7. The method of NAN network channel switching of claim 6, wherein using the primary channel to interact with a peer device comprises:
and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively.
8. The method for NAN network channel switching of claim 6, wherein the process performed at the routing device side further comprises:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
9. The NAN network channel switching method of claim 6 or 8, wherein whether the distance between the routing device and the peer device exceeds the corresponding distance threshold is detected by the routing device based on a NAN network distance measuring method Ranging, or is detected by the mobile terminal based on the NAN network distance measuring method Ranging and informed to the routing device.
10. The method for NAN network channel switching of claim 6, wherein the process performed at the routing device side further comprises:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
11. The NAN network channel switching method of claim 6, 8 or 10, wherein in a case that the counterpart device comprises a mobile terminal and a home device, the process executed on the routing device side further comprises:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
12. A method for NAN network channel switching is characterized in that the flow executed at the home device side comprises the following steps:
the method comprises the steps that NAN network connection is established between home equipment and routing equipment on more than two channels, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
and when the distance between the home equipment and the mobile terminal exceeds a first distance threshold or the distance between the mobile terminal and the routing equipment exceeds a second distance threshold, switching from using the main channel to using a lower frequency channel to interact with the routing equipment or the mobile terminal, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
13. The method for NAN network channel switching of claim 12, wherein the process performed at a home device side further comprises:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
14. The NAN network channel switching method of claim 12 or 13, wherein whether the distance between the home device and the mobile terminal exceeds the first distance threshold is detected by the home device based on a NAN network distance measuring method Ranging, or is detected by the mobile terminal based on the NAN network distance measuring method Ranging and notified to the home device.
15. The NAN network channel switching method of claim 12 or 13, wherein the channel switching between the primary channel and the lower frequency channel by the home device is performed based on a notification from a mobile terminal or a routing device.
16. An apparatus for NAN network channel switching, disposed at a mobile terminal, the apparatus comprising:
the first channel determining module is used for establishing NAN network connection on more than two channels between the mobile terminal and the routing equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the household equipment;
a first switching control module, configured to switch from using the primary channel to using a lower frequency channel to control the home device when a distance between the mobile terminal and an opposite device exceeds a corresponding distance threshold, where the opposite device includes: routing equipment and/or home equipment; the lower frequency channel is one of the more than two channels, the frequency of which is lower than that of the main channel;
the first switching control module is specifically configured to:
the main channel is used for interacting with the routing equipment, and then the routing equipment interacts with the home equipment; alternatively, the first and second electrodes may be,
and under the condition that NAN network connection is established between the routing equipment and the household equipment on the main channel, the main channel is used for directly interacting with the household equipment.
17. The apparatus of NAN network channel switching of claim 16, wherein the first switching control module is further configured to:
and when the distance between the mobile terminal and the opposite equipment is smaller than or equal to the corresponding distance threshold value, the household equipment is controlled by switching the lower frequency channel back to the main channel.
18. The apparatus of claim 16 or 17, wherein whether the distance between the mobile terminal and the peer device exceeds the corresponding distance threshold is detected by the mobile terminal based on a NAN network distance measuring method Ranging, or is detected by the peer device based on the NAN network distance measuring method Ranging and signaled to the mobile terminal.
19. The apparatus of NAN network channel switching of claim 16, wherein the first switching control module is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, the use of the main channel is switched to the use of a lower frequency channel to control the household equipment.
20. The apparatus for NAN network channel switching according to claim 16, 17 or 19, wherein in a case that the peer device is a home device and NAN network connection is also established between the routing device and the home device on the two or more channels, the switching control module is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
21. An apparatus for switching NAN network channels, disposed on a routing device side, the apparatus comprising:
the second channel determination module is used for establishing NAN network connection on more than two channels between the routing equipment and the opposite equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; the partner apparatus includes: the mobile terminal, or the mobile terminal and the household equipment; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the opposite side equipment;
a second switching control module, configured to switch, when a distance between the routing device and an opposite device exceeds a corresponding distance threshold, from using the primary channel to using a lower frequency channel to interact with the opposite device, where the lower frequency channel is one of the two or more channels whose frequency is lower than that of the primary channel;
the second channel determining module is further configured to, when the opposite device is a mobile terminal: and establishing NAN network connection on the main channel between the routing equipment and the household equipment.
22. The apparatus for NAN network channel switching of claim 21, wherein using the primary channel to interact with a peer device comprises:
and as the relay equipment, the main channel is used for interacting with the mobile terminal and the household equipment respectively.
23. The apparatus of claim 21, wherein the second handover control module is further configured to:
and when the distance between the routing equipment and the opposite equipment is smaller than or equal to the corresponding distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the opposite equipment.
24. The apparatus for NAN network channel switching according to claim 21 or 23, wherein whether the distance between the routing device and the peer device exceeds the corresponding distance threshold is detected by the routing device based on NAN network distance measuring means Ranging, or is detected by the mobile terminal based on NAN network distance measuring means Ranging and signaled to the routing device.
25. The apparatus of claim 21, wherein the second handover control module is further configured to:
and when the communication quality of the main channel is lower than the quality threshold, switching from using the main channel to using a lower frequency channel to interact with the opposite side device.
26. The NAN network channel switching apparatus of claim 21, 23 or 25, wherein in a case that the peer device comprises a mobile terminal and a home device, the second switching control module is further configured to:
and when the channel switching is carried out, the household equipment is informed to synchronously carry out the corresponding channel switching.
27. The utility model provides a device of NAN network channel switching which characterized in that sets up in the house equipment side, the device includes:
the third channel determining module is used for establishing NAN network connection on more than two channels between the household equipment and the routing equipment, and the NAN network connection established on the more than two channels has a discovery time window with time synchronization; any channel except the channel with the lowest frequency in the more than two channels is used as a main channel to interact with the routing equipment or the mobile terminal;
and the third switching control module is used for switching from using the main channel to using a lower frequency channel to interact with the routing equipment or the mobile terminal when the distance between the household equipment and the mobile terminal exceeds the first distance threshold or the distance between the mobile terminal and the routing equipment exceeds the second distance threshold, wherein the lower frequency channel is one of the more than two channels, and the frequency of the lower frequency channel is lower than that of the main channel.
28. The apparatus of claim 27, wherein the third switching control module is further configured to:
when the distance between the home equipment and the mobile terminal is smaller than or equal to a first distance threshold value, switching back to use the main channel by using the lower frequency channel to interact with the routing equipment or the mobile terminal;
and when the distance between the mobile terminal and the routing equipment is smaller than or equal to a second distance threshold value, switching back to use the main channel by using the lower frequency channel or interacting with the mobile terminal.
29. The apparatus for NAN network channel switching according to claim 27 or 28, wherein whether the distance between the household device and the mobile terminal exceeds the first distance threshold is detected by the household device based on a NAN network distance measuring method Ranging, or is detected by the mobile terminal based on the NAN network distance measuring method Ranging and notified to the household device.
30. The apparatus of claim 27 or 28, wherein the channel switching between the primary channel and the lower frequency channel by the third handover control module is based on a notification from a mobile terminal or a routing device.
31. A mobile terminal comprising the NAN network channel switching apparatus of any of claims 16-20.
32. A routing device comprising the NAN network channel switching apparatus of any of claims 21-26.
33. A home device comprising the NAN network channel switching apparatus of any one of claims 27 to 30.
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