CN108990170B - Mesh link establishment method and device, fat AP and storage medium - Google Patents
Mesh link establishment method and device, fat AP and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a Mesh link establishing method, a device, a fat AP and a storage medium, wherein the Mesh link establishing method is applied to the fat AP in a Mesh network, and comprises the following steps: selecting one channel from available channels, and determining the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel; if the detection response message is received within the preset detection duration, a Mesh link is established with the source fat AP of the detection response message in a negotiation mode on the current detection channel, the broadcast of the detection request message is stopped after the Mesh link is established successfully, and the current detection channel is utilized to carry out wireless communication with the source fat AP. By the scheme, the process of establishing the Mesh link between the fat APs can be simplified.
Description
Technical Field
The invention relates to the technical field of wireless networks, in particular to a Mesh link establishing method and device, a fat AP and a storage medium.
Background
Each AP (Access Point) in a Mesh (Mesh) network serves as a node, a Mesh link can be established between the APs, and a multi-hop Mesh link can be established between APs with a longer distance. When the Mesh link is established between the two APs, the two APs need to establish a neighbor relation through a working channel, and the two APs can only establish the neighbor relation with each other if the working channel is the same.
When the working channels of the APs are configured, in order to ensure that the working channels of the two APs establishing the Mesh link are the same, each AP configures a fixed working channel consistent with the AP of the opposite end. In practical applications, the air interface environment of the network may not be unchanged, and a working channel of the AP may have large interference after a period of time, and at this time, if the AP continues to work in the working channel, the transmission quality cannot be guaranteed. Therefore, the working channels of the APs need to be reconfigured, and for the APs, especially for fataps (fat APs), the working channels need to be reconfigured individually for each AP, and the number of APs in the Mesh network is usually large, which makes the process of establishing the Mesh link between the fataps too complicated.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for establishing a Mesh link, a fat AP, and a storage medium, so as to simplify a process of establishing a Mesh link between fataps. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a Mesh link establishment method, which is applied to a fat AP in a Mesh network, and the method includes:
selecting one channel from available channels, and determining the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel;
and if the detection response message is received within the preset detection duration, negotiating with a source fat AP of the detection response message on a current detection channel to establish a Mesh link, stopping broadcasting the detection request message after the Mesh link is successfully established, and performing wireless communication with the source fat AP by using the current detection channel.
In a second aspect, an embodiment of the present invention provides a Mesh link establishment apparatus, which is applied to a fat AP in a Mesh network, and the apparatus includes:
the broadcast module is used for selecting one channel from the available channels and determining the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel;
and the establishing module is used for negotiating with a source fat AP of the detection response message on a current detection channel to establish a Mesh link if the detection response message is received within a preset detection duration, stopping broadcasting the detection request message after the Mesh link is successfully established, and performing wireless communication with the source fat AP by using the current detection channel.
In a third aspect, an embodiment of the present invention provides a fat AP, including a processor and a storage medium, wherein,
the storage medium is used for storing a computer program;
the processor is configured to implement the method steps of the first aspect of the embodiment of the present invention when executing the computer program stored in the storage medium.
In a fourth aspect, an embodiment of the present invention provides a storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method steps of the first aspect of the embodiment of the present invention.
The embodiment of the invention provides a Mesh link establishing method and device, a fat AP and a storage medium, wherein the fat AP in a Mesh network selects a channel from available channels, determines the selected channel as a temporary working channel, takes the temporary working channel as a current detection channel, broadcasts a detection request message on the current detection channel, negotiates with the fat AP from which the detection response message comes on the current detection channel to establish the Mesh link if the detection response message is received within a preset detection duration, stops broadcasting the detection request message after the Mesh link is successfully established, and utilizes the current detection channel to carry out wireless communication with the fat AP from which the detection response message comes. The temporary working channel is selected from the available channels, the temporary working channel is used as a current detection channel, a detection request message is broadcasted on the current detection channel, if a detection response message is received within a preset detection duration, the fat AP replying the detection response message is positioned in the current detection channel, the neighbor relation of two fat APs can be determined through the current detection channel, and the two fat APs which are mutually in the neighbor relation can negotiate to establish a Mesh link on the current detection channel. The working channel of each fat AP does not need to be fixedly configured, so that the process of establishing the Mesh link between the fat APs is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art WDS system architecture;
fig. 2 is a schematic flow chart of a Mesh link establishing method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of information interaction between FatAP1 and FatAP2 to establish a Mesh link according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a Mesh link establishing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fat AP according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to simplify the process of establishing a Mesh link between fataps, embodiments of the present invention provide a Mesh link establishing method, apparatus, fat AP, and storage medium.
Next, a Mesh link establishment method provided in an embodiment of the present invention is first described.
The Mesh link establishing method provided by the embodiment of the present invention may be applied to a FatAP in a Mesh network, specifically, may be an AP in a Wireless Distribution System (WDS), where the WDS is an application of the Mesh network, and as shown in fig. 1, two independent local area networks are connected by a Mesh link between an AP1 and an AP2, and data transmission is provided between the two independent local area networks. The FatAP in the Mesh network may provide a Mesh service. The Mesh link establishing method provided by the embodiment of the invention can be realized by at least one of software, hardware circuit and logic circuit arranged in FatAP.
As shown in fig. 2, a method for establishing a Mesh link according to an embodiment of the present invention may include the following steps:
s201, selecting a channel from available channels, and determining the selected channel as a temporary working channel; and taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel.
For a Mesh network in an AC + FitAP (thin AP) networking environment, an AC may be configured to be an automatic channel (that is, an AP selects a working channel from available channels) by modifying a working channel of an AP whose role is an MPP (Mesh portal Point, Mesh entry node), and an AP of other roles (MP (Mesh Point, Mesh node) and MAP (Mesh Access node)), so that the working channel of the Mesh network may be changed. But for Mesh networks like the FatAP networking environment, each FatAP needs to modify the channel configuration separately, resulting in a too complex process for establishing wireless links between fataps.
In the embodiment of the present invention, FatAP is configured as an automatic channel, and after being initially powered on, FatAP selects one channel from available channels (which may be embodied in an available channel list manner, for example) supported by itself as a temporary working channel, and performs normal service (for example, terminal access service, etc.) processing by using the channel. Meanwhile, the channel is also used as a first detection channel (i.e., a current detection channel), and the detection request message is broadcast on the channel to start detecting whether a fat AP capable of establishing a Mesh link exists. The fat AP will continue to operate on this channel while monitoring the channel quality of this channel, if it exists and successfully establishes the Mesh link.
Subsequently, when the channel quality of the channel is monitored to be poor, the channel is regarded as an unavailable channel, for example, the channel can be removed from the available channel list, and then, the Mesh link is disconnected, which can be executed from S201 again; or directly switching to a channel with better channel quality (as a temporary working channel) to start to execute the step of broadcasting the detection request message on the current detection channel; the method can also be directly switched to a channel with better channel quality, before the channel is switched, the opposite-end fat AP of the Mesh link can be notified, and the opposite-end fat AP is switched to the channel to be switched, so that the Mesh link is established with the opposite-end fat AP again as soon as possible after the channel is switched, and the re-detection time is shortened.
It should be noted that, initially, the temporary working channels selected by the fat APs may be the same or different.
S202, if the probe response packet is received within the preset probe duration, negotiating with the fat AP from which the probe response packet originates on the current probe channel to establish a Mesh link, and after the Mesh link is successfully established, stopping broadcasting the probe request packet, and performing wireless communication with the fat AP from which the probe response packet originates using the current probe channel.
The preset detection duration is the maximum time interval for receiving the detection response message after the detection request message is sent by the FatAP, and the preset detection duration is usually set to be shorter (for example, 50ms) so as to reduce the influence of channel detection on the service processing of the temporary working channel.
If the Probe response message is received within the preset Probe duration, it indicates that a neighbor relationship exists between the source FatAP sending the Probe response message and the FatAP sending the Probe Request message, so that the FatAP sending the Probe Request message and the source FatAP can negotiate with each other to establish a Mesh link on the current Probe channel, and the process of negotiating and establishing the Mesh link is as shown in fig. 3 (taking FatAP1 sending a Probe Request message, and FatAP2 receiving the Probe Request message as an example), which mainly includes the following steps:
firstly, the FatAP1 encapsulates its Mesh Profile (Mesh configuration) information into a Probe Request message, and sends the Probe Request message on the current probing channel to find the neighbor FatAP.
And secondly, after the FatAP2 receives the Probe Request message, checking whether the MeshProfile information carried by the Probe Request message is matched with the local MeshProfile information.
Thirdly, if the Mesh Profile information is matched with the local Mesh Profile information and the acceptable Peer Links (receiving Peer connection) of the ProbeRequest message is set, the FatAP2 establishes a neighbor relation with the FatAP1, encapsulates the Mesh Profile information of the FatAP2 into a Probe Response message, and sends the message to the FatAP 1.
Fourthly, after receiving the Probe Response message, the FatAP1 checks whether the Mesh Profile information carried by the Probe Response message matches with the local Mesh Profile information.
Fifthly, if the Mesh Profile information is matched with the local Mesh Profile information and the acceptable Peerlinks of the ProbeResponse message are set, the FatAP1 establishes a neighbor relation with the FatAP 2.
Sixthly, after the FatAP1 and the FatAP2 establish a neighbor relation, both the FatAP1 and the FatAP2 send Link Open messages to the opposite end, respond to the Link Open messages of the opposite end by using Link Confirm messages, and after both the Link Open messages are sent and the Link Confirm messages are received, the Mesh links between the two are successfully established.
After the Mesh link is successfully established, the FatAP1 may stop broadcasting the probe request message and wirelessly communicate with the FatAP2 using the current probe channel.
Optionally, the Mesh link establishing method provided in the embodiment of the present invention may further perform the following steps:
if the detection response message is not received within the preset detection duration, or if the Mesh link is failed to be established, stopping broadcasting the detection request message, and continuing working on the temporary working channel;
and when a preset detection period is reached, taking the next undetected channel in the available channels as a current detection channel, and after switching from the temporary working channel to the current detection channel, executing the step of broadcasting a detection request message on the current detection channel until a Mesh link is successfully established, wherein the preset detection period is longer than the preset detection duration.
If the detection response message is not received within the preset detection duration, or if the Mesh link is failed to be established, it indicates that the detection neighbor FatAP fails or the Mesh link cannot be established, and the broadcast of the detection request message needs to be stopped, and the operation on the temporary working channel is continued. If the current detection channel and the temporary working channel are the same channel, the channel does not need to be switched; if the current detection channel is different from the temporary working channel, the current detection channel needs to be switched back to the temporary working channel to continue working.
In the embodiment of the present invention, an undetected channel may be selected from available channels as a current detection channel in a polling scanning manner, that is, when a preset detection period arrives, a next undetected channel in the available channels is used as the current detection channel, a temporary working channel is switched to the current detection channel, and a detection request packet is broadcast on the current detection channel until a Mesh link is successfully established; if the detection response message is not received within the preset detection duration, or if the Mesh link is failed to be established, the temporary working channel is switched back to continue working, and when the next preset detection period is reached, the next undetected channel is selected as the current detection channel for detection. The preset detection duration is the maximum time interval of receiving the detection response message after the detection request message is sent by the FatAP broadcast, and the FatAP needs to reserve the time for receiving the detection response message when selecting the next detection channel, so that the preset detection period is set to be longer than the preset detection duration.
Optionally, the preset probing period is a multiple of the preset probing duration, and the multiple is greater than or equal to 1 and less than or equal to 2.
Since each FatAP in the Mesh network may be in the channel detection state at the same time, in order to avoid the situation that when the FatAP broadcasts the detection request message, other fataps are also detecting the channel but not the current detection channel, the preset detection period should not exceed 2 times of the preset detection duration, specifically, the preset detection period T is setsAnd a preset detection time length TtThe relationship between may be: t iss＝(1+β)TtWherein β is a random number generated by the FatAP itself, and ranges from 0 to 1, and the random number β can prevent the opposite terminal FatAP from just scanning other channels but not the current sounding channel when the FatAP scans the opposite terminal FatAP on the current sounding channel.
Further, in the embodiment of the present invention, after the probe request packet is broadcast on the current probe channel, the following steps may also be performed:
if the detection request messages sent by other fat APs are received, sending detection response messages to the other fat APs on the current detection channel receiving the detection request messages, and suspending broadcasting the detection request messages;
if link opening messages sent by other fat APs are received within a preset pause duration, establishing Mesh links with the other fat APs, and after the Mesh links are successfully established, performing wireless communication with the other fat APs by using a current detection channel; and if the link opening message sent by the fat AP from other sources is not received within the preset pause duration, continuing to broadcast the detection request message on the current detection channel.
In the above process, the current sounding channel may or may not be the first sounding channel. In the process of detection by the FatAP, the FatAP may receive detection request messages from other FatAPs, and in order to avoid simultaneous channel switching, after receiving the detection request messages sent by other FatAPs, the FatAP may pause broadcasting the detection request messages, and the pause time is set to be a preset pause duration (for example, 3s) so as to improve the success rate of establishing the Mesh link. If the link opening message sent by other FatAP is not received within the preset pause duration, the Mesh link cannot be established, and the detection request message is continuously broadcast on the current detection channel. If link opening messages sent by other FatAPs are received within the preset pause duration, the Mesh links can be established among the links, and after the Mesh links are successfully established, wireless communication can be carried out with the other FatAPs by using the current detection channel.
For convenience of understanding, the Mesh link establishment method provided by the embodiment of the present invention is described below with reference to specific examples.
Assuming that the FatAP1 selects the available channel 36 as a temporary working channel, and takes the channel 36 as a current probing channel, a Probe Request message is broadcast on the channel 36, if a Probe Response message is received within a probing duration, if a source FatAP of the Probe Response message is FatAP2, it is considered that FatAP2 is located on the channel 36, and the FatAP1 negotiates with the FatAP2 to establish a Mesh link on the channel 36. In the process, supposing that the FatAP2 receives a Probe Request message broadcasted by the FatAP1 firstly, in order to avoid that a Mesh link cannot be established due to the fact that the FatAP2 switches channels at the same time, the FatAP2 suspends the broadcasting of the Probe Request message after receiving the Probe Request message broadcasted by the FatAP1, wherein the suspension time is 3 seconds, and if a link open message sent by the FatAP1 is not received within 3 seconds, the FatAP2 rebroadcasts the Probe Request message; if the link opening message sent by the FatAP1 is received within 3 seconds, a Mesh link is established with the FatAP1, and after the Mesh link is successfully established, wireless communication is carried out with the FatAP2 through the channel 36.
By applying the embodiment, the fat AP in the Mesh network selects one channel from the available channels, determines the selected channel as a temporary working channel, uses the temporary working channel as a current detection channel, broadcasts the detection request message on the current detection channel, negotiates with the fat AP from which the detection request message is originated on the current detection channel to establish a Mesh link if the detection response message is received within a preset detection duration, and stops broadcasting the detection request message after the Mesh link is successfully established, and performs wireless communication with the fat AP from which the detection request message is originated by using the current detection channel. The temporary working channel is selected from the available channels, the temporary working channel is used as a current detection channel, a detection request message is broadcasted on the current detection channel, if a detection response message is received within a preset detection duration, the fat AP replying the detection response message is positioned in the current detection channel, the neighbor relation of two fat APs can be determined through the current detection channel, and the two fat APs which are mutually in the neighbor relation can negotiate to establish a Mesh link on the current detection channel. The working channel of each fat AP does not need to be fixedly configured, so that the process of establishing the Mesh link between the fat APs is simplified.
Corresponding to the foregoing method embodiment, an embodiment of the present invention provides a Mesh link establishing apparatus, and as shown in fig. 4, the Mesh link establishing apparatus is applied to a fat AP in a Mesh network, and may specifically include:
a broadcasting module 410, configured to select one channel from available channels, and determine the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel;
the establishing module 420 is configured to negotiate with a source fat AP of a probe response packet on a current probe channel to establish a Mesh link if the probe response packet is received within a preset probe duration, and stop broadcasting the probe request packet after the Mesh link is successfully established, and perform wireless communication with the source fat AP by using the current probe channel.
Optionally, the apparatus may further include:
a stopping module, configured to stop broadcasting the probe request packet and continue to work on the temporary working channel if the probe response packet is not received within the preset probe duration or if the Mesh link is failed to be established;
the broadcasting module 410 may be further configured to:
and when a preset detection period is reached, taking the next undetected channel in the available channels as a current detection channel, and after the temporary working channel is switched to the current detection channel, executing the step of broadcasting a detection request message on the current detection channel until a Mesh link is successfully established, wherein the preset detection period is longer than the preset detection time length.
Optionally, the preset detection period is a multiple of the preset detection duration; the multiple is greater than or equal to 1 and less than or equal to 2.
Optionally, the broadcasting module 410 may be further configured to:
after the detection request message is broadcasted on the current detection channel, if the detection request message sent by other fat APs is received, sending a detection response message to the other fat APs on the current detection channel receiving the detection request message, and suspending the broadcast of the detection request message;
the establishing module 420 may be further configured to:
if the link opening message sent by the other fat AP is received within the preset pause duration, establishing a Mesh link with the other fat AP, and after the Mesh link is successfully established, performing wireless communication with the other fat AP by using a current detection channel;
the broadcasting module 410 may be further configured to:
and if the link opening message sent by the fat AP from other sources is not received within the preset pause duration, continuing to broadcast the detection request message on the current detection channel.
By applying the embodiment, the fat AP in the Mesh network selects one channel from the available channels, determines the selected channel as a temporary working channel, uses the temporary working channel as a current detection channel, broadcasts the detection request message on the current detection channel, negotiates with the fat AP from which the detection request message is originated on the current detection channel to establish a Mesh link if the detection response message is received within a preset detection duration, and stops broadcasting the detection request message after the Mesh link is successfully established, and performs wireless communication with the fat AP from which the detection request message is originated by using the current detection channel. The temporary working channel is selected from the available channels, the temporary working channel is used as a current detection channel, a detection request message is broadcasted on the current detection channel, if a detection response message is received within a preset detection duration, the fat AP replying the detection response message is positioned in the current detection channel, the neighbor relation of two fat APs can be determined through the current detection channel, and the two fat APs which are mutually in the neighbor relation can negotiate to establish a Mesh link on the current detection channel. The working channel of each fat AP does not need to be fixedly configured, so that the process of establishing the Mesh link between the fat APs is simplified.
To simplify the process of establishing the Mesh link between the APs, the embodiment of the present invention further provides a fat AP, as shown in fig. 5, which includes a processor 501 and a storage medium 502, wherein,
the storage medium 502 for storing a computer program;
the processor 501 is configured to implement all the steps of the Mesh link establishment method provided in the embodiment of the present invention when executing the program stored in the storage medium 502.
The storage medium may include a RAM (Random Access Memory) or an NVM (Non-volatile Memory), such as at least one disk Memory. In the alternative, the storage medium may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also a DSP (Digital Signal Processing), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
In this embodiment, the processor reads a computer program stored in a storage medium and runs the computer program, so that: the temporary working channel is selected from the available channels, the temporary working channel is used as a current detection channel, a detection request message is broadcasted on the current detection channel, if a detection response message is received within a preset detection duration, the fat AP replying the detection response message is positioned in the current detection channel, the neighbor relation of two fat APs can be determined through the current detection channel, and the two fat APs which are mutually in the neighbor relation can negotiate to establish a Mesh link on the current detection channel. The working channel of each fat AP does not need to be fixedly configured, so that the process of establishing the Mesh link between the fat APs is simplified.
Corresponding to the Mesh link establishing method provided in the foregoing embodiments, an embodiment of the present invention provides a storage medium, where a computer program is stored in the storage medium, and the computer program, when executed by a processor, implements all the steps of the Mesh link establishing method provided in the embodiment of the present invention.
In this embodiment, the storage medium stores a computer program for executing the Mesh link establishment method provided in the embodiment of the present invention when running, so that the method can be implemented as follows: the temporary working channel is selected from the available channels, the temporary working channel is used as a current detection channel, a detection request message is broadcasted on the current detection channel, if a detection response message is received within a preset detection duration, the fat AP replying the detection response message is positioned in the current detection channel, the neighbor relation of two fat APs can be determined through the current detection channel, and the two fat APs which are mutually in the neighbor relation can negotiate to establish a Mesh link on the current detection channel. The working channel of each fat AP does not need to be fixedly configured, so that the process of establishing the Mesh link between the fat APs is simplified.
For the fat AP and the storage medium embodiment, since the content of the method involved is substantially similar to the foregoing method embodiment, the description is relatively simple, and for the relevant points, reference may be made to part of the description of the method embodiment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the device, the fat AP and the storage medium embodiments, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the partial description of the method embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A Mesh link establishment method is applied to a fat Access Point (AP) in a Mesh network, and comprises the following steps:
selecting one channel from available channels, and determining the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel;
if the detection request messages sent by other fat APs are received, sending detection response messages to the other fat APs on the current detection channel receiving the detection request messages, and suspending broadcasting the detection request messages;
if the link opening message sent by the other fat AP is received within the preset pause duration, establishing a Mesh link with the other fat AP, and after the Mesh link is successfully established, performing wireless communication with the other fat AP by using a current detection channel;
if the link opening message sent by the fat AP from other sources is not received within the preset pause duration, continuing to broadcast the detection request message on the current detection channel;
and if the detection response message is received within the preset detection duration, negotiating with a source fat AP of the detection response message on a current detection channel to establish a Mesh link, stopping broadcasting the detection request message after the Mesh link is successfully established, and performing wireless communication with the source fat AP by using the current detection channel.
2. The method of claim 1, further comprising:
if the detection response message is not received within the preset detection duration, or if the Mesh link is failed to be established, stopping broadcasting the detection request message, and continuing to work on the temporary working channel;
and when a preset detection period is reached, taking the next undetected channel in the available channels as a current detection channel, and after the temporary working channel is switched to the current detection channel, executing the step of broadcasting a detection request message on the current detection channel until a Mesh link is successfully established, wherein the preset detection period is longer than the preset detection time length.
3. The method of claim 2, wherein the preset probing period is a multiple of the preset probing duration; the multiple is greater than or equal to 1 and less than or equal to 2.
4. A Mesh link establishment apparatus, applied to a fat access point AP in a Mesh network, the apparatus comprising:
the broadcast module is used for selecting one channel from the available channels and determining the selected channel as a temporary working channel; taking the temporary working channel as a current detection channel, and broadcasting a detection request message on the current detection channel;
the establishing module is used for negotiating with a source fat AP of the detection response message on a current detection channel to establish a Mesh link if the detection response message is received within a preset detection duration, stopping broadcasting the detection request message after the Mesh link is successfully established, and performing wireless communication with the source fat AP by using the current detection channel;
the broadcast module is further configured to, after broadcasting the probe request message on the current probe channel, if the probe request message sent by another fat AP is received, send a probe response message to the other fat AP on the current probe channel on which the probe request message is received, and suspend broadcasting the probe request message;
the establishing module is further configured to establish a Mesh link with the other fat APs if a link opening message sent by the other fat APs is received within a preset timeout period, and perform wireless communication with the other fat APs by using a current detection channel after the Mesh link is successfully established;
the broadcast module is further configured to continue broadcasting the probe request message on the current probe channel if the link open message sent by the fat AP from the other source is not received within the preset timeout period.
5. The apparatus of claim 4, further comprising:
a stopping module, configured to stop broadcasting the probe request packet and continue to work on the temporary working channel if the probe response packet is not received within the preset probe duration or if the Mesh link is failed to be established;
the broadcast module is further configured to:
and when a preset detection period is reached, taking the next undetected channel in the available channels as a current detection channel, and after the temporary working channel is switched to the current detection channel, executing the step of broadcasting a detection request message on the current detection channel until a Mesh link is successfully established, wherein the preset detection period is longer than the preset detection time length.
6. The apparatus of claim 5, wherein the preset probing period is a multiple of the preset probing duration; the multiple is greater than or equal to 1 and less than or equal to 2.
7. A fat Access Point (AP), comprising a processor and a storage medium, wherein,
the storage medium is used for storing a computer program;
the processor, when executing the computer program stored on the storage medium, implementing the method steps of any of claims 1-3.
8. A storage medium, characterized in that a computer program is stored in the storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1-3.
Priority Applications (1)
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| CN114629580B (en) * | 2022-05-17 | 2022-09-13 | 阿里巴巴达摩院(杭州)科技有限公司 | Low-orbit satellite link simulation method and device and electronic equipment |
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