CN117580126A - Control method and device for wireless backhaul link and storage medium - Google Patents
Control method and device for wireless backhaul link and storage medium Download PDFInfo
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Abstract
The disclosure relates to a control method, a device and a storage medium of a wireless backhaul link, and relates to the technical field of communication. Comprising the following steps: under the condition that a wireless backhaul link between the main equipment and the main equipment is in a disconnected state, determining whether a frequency band to be evaluated occupied by the main equipment is suitable for establishing a multi-frequency band wireless backhaul link; the multi-band wireless backhaul link indicates that data between the master device and the slave device can be transmitted over the multi-band wireless backhaul link; under the condition that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link, a target frequency band with the communication quality meeting the preset condition is screened from the frequency band to be evaluated; and establishing a single-band wireless backhaul link with the main equipment on the target frequency band. By using the control method of the wireless backhaul link, the single-band wireless backhaul link between the main device and the sub device can be recovered under the condition that the multi-band wireless backhaul link between the main device and the sub device is disconnected.
Description
Technical Field
The disclosure relates to the field of communication technologies, and in particular, to a control method, a device and a storage medium for a wireless backhaul link.
Background
With the development of wireless technology, multiple routers can be connected in a communication manner to form a mesh network (mesh) with wider coverage and stronger signal. Currently, wireless backhaul links between routers in a mesh network are typically established based on a single frequency band, e.g., the routers communicate in the 2.4GHz band or the 5GHz band, which is implemented as a single-band wireless backhaul link.
In the case where the WIFI 7 standard is open, a Multi-band wireless backhaul (MLO) occurs, and routers can communicate on multiple bands at the same time. However, when the multi-band wireless backhaul links between the routers are disconnected, the routers always maintain a disconnected state, which results in disconnection of the router network, and thus the user experience is reduced.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a control method, apparatus and storage medium of a wireless backhaul link.
According to a first aspect of embodiments of the present disclosure, there is provided a control method of a wireless backhaul link, performed by a child device, including:
under the condition that a wireless backhaul link between the wireless backhaul link and a main device is in a disconnected state, determining whether a frequency band to be evaluated occupied by the main device is suitable for establishing a multi-frequency band wireless backhaul link; the multi-band wireless backhaul link indicates that data between the master device and the child device can be transmitted over the multi-band wireless backhaul link;
Screening a target frequency band with communication quality meeting a preset condition from the frequency band to be evaluated under the condition that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link;
and establishing a single-band wireless backhaul link with the main equipment on the target frequency band.
Optionally, the method further comprises: determining that a wireless backhaul link with the master device is in a disconnected state if the slave device is in any one of:
the sub-equipment is in an initialization state, the sub-equipment is in a restarting state, and a wireless backhaul link between the sub-equipment and the main equipment is in a disconnection reconnection state.
Optionally, the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-frequency band wireless backhaul link includes:
and under the condition that the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold value, determining that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link.
Optionally, the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-frequency band wireless backhaul link includes:
transmitting a detection request to the main equipment on the frequency band to be evaluated;
And under the condition that the detection response returned by the main equipment on the frequency band to be evaluated is not received in excess of a first preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link.
Optionally, the sending a probe request to the master device on the frequency band to be evaluated includes:
and periodically sending a detection request to the master device on the frequency band to be evaluated.
Optionally, the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-frequency band wireless backhaul link includes:
and under the condition that the connection between the main equipment and the frequency band to be evaluated is not successfully established in the second preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link.
Optionally, the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-frequency band wireless backhaul link includes:
transmitting a detection request to the main equipment under the condition that the channel utilization rate of the channels in all the frequency bands to be evaluated is smaller than or equal to a preset threshold value;
under the condition that detection responses returned by the main equipment on all the frequency bands to be evaluated are received in a first preset time period, connection is established with the main equipment;
And under the condition that connection with the main equipment is successfully established on all the frequency bands to be evaluated within a second preset time period, determining that all the frequency bands to be evaluated are suitable for establishing the multi-band wireless backhaul link.
Optionally, the method further comprises:
and under the condition that the frequency band to be evaluated is suitable for establishing the multi-band wireless backhaul link, establishing the multi-band wireless backhaul link with the main equipment.
Optionally, in the case that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, selecting a target frequency band with communication quality meeting a preset condition from the frequency bands to be evaluated, including:
and under the condition that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, taking the frequency band to be evaluated which meets the following most conditions as the target frequency band:
the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold, the main equipment and the sub equipment can perform data transmission on the frequency band to be evaluated, and the main equipment and the sub equipment can establish successful connection on the frequency band to be evaluated.
Optionally, the method further comprises:
reporting the backhaul link state of the sub-equipment to the main equipment, wherein the backhaul link state is a single-band wireless connection state or a multi-band wireless connection state;
And receiving indication information sent by the main equipment, wherein the indication information is used for indicating the sub-equipment to keep the backhaul link state.
According to a second aspect of the embodiments of the present disclosure, there is provided a control apparatus for a wireless backhaul link, including:
the determining module is configured to determine whether a frequency band to be evaluated occupied by the main equipment is suitable for establishing a multi-band wireless backhaul link or not under the condition that the wireless backhaul link between the determining module and the main equipment is in a disconnected state; the multi-band wireless backhaul link indicates that data between the master device and the slave device can be transmitted over the multi-band wireless backhaul link;
the screening module is configured to screen a target frequency band with communication quality meeting preset conditions from the frequency band to be evaluated under the condition that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link;
and the connection module is configured to establish a single-band wireless backhaul link with the main device on the target frequency band.
According to a third aspect of the embodiments of the present disclosure, there is provided a control apparatus of a wireless backhaul link, including:
a processor;
a memory for storing processor-executable instructions;
Wherein the processor is configured to:
steps of a method for controlling a wireless backhaul link provided in the first aspect of the embodiments of the present disclosure are performed.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method for controlling a wireless backhaul link provided by the first aspect of the present disclosure.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
under the condition that a wireless backhaul link between the sub-equipment and the main equipment is disconnected, whether the main equipment and the sub-equipment can establish multi-frequency band wireless backhaul connection or not can be evaluated again, if the multi-frequency band wireless backhaul connection cannot be established, the sub-equipment and the main equipment can be controlled to establish single-frequency wireless backhaul connection, so that after the sub-equipment is disconnected with the main equipment, the connection between the sub-equipment and the main equipment can be restored, and the condition that the sub-equipment is disconnected from the network is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a control method of a wireless backhaul link according to an exemplary embodiment.
Fig. 2 is a logic diagram illustrating a method of controlling a wireless backhaul link according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a handset interacting with a router according to an example embodiment.
Fig. 4 is a diagram illustrating a secondary device sending backhaul link status to a primary device in accordance with an example embodiment.
Fig. 5 is a block diagram illustrating a control apparatus of a wireless backhaul link according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a control apparatus of a wireless backhaul link according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
In the case where the WIFI (wireless local area network) 7 standard is open, a Multi-band wireless backhaul (MLO) appears, and two devices that need to communicate are a master device (Controller) and a slave device (Agent), respectively, and the master device and the slave device can communicate on multiple bands at the same time. Based on the characteristics of the multi-band wireless backhaul link, the main device and the sub-device can be ensured to be successfully established when being stably connected in all the frequency bands of the multi-band.
However, when the sub-device is in a home environment with higher environmental noise, the multi-band wireless backhaul link between the main device and the sub-device is disconnected, or the multi-band wireless backhaul link cannot be reconnected after being disconnected, so that the user experience is lower.
The reason that the sub-device is in a home environment with higher environmental noise and can cause disconnection of the multi-band wireless backhaul link or that the multi-band wireless backhaul link cannot be reconnected after disconnection has the following points:
First, the high ambient noise increases the interference in the transmission process between the sub-device and the main device, which results in that the main device cannot correctly receive the signal sent by the sub-device, and this makes the connection of the multi-band wireless backhaul link between the main device and the sub-device difficult, or the connection is easy to break after the connection is established.
Secondly, the high ambient noise floor reduces the strength of the signal, so that the signal sent by the sub-device to the main device cannot reach a sufficient power level, and the connection of the multi-band wireless backhaul link between the main device and the sub-device becomes difficult, or disconnection easily occurs after the connection is established.
Third, the higher environmental noise floor increases the possibility of signal loss of the sub-device to the main device, and the signal of the sub-device to the main device is covered by the environmental noise floor and cannot be correctly received by the main device, so that the connection of the multi-band wireless backhaul link between the main device and the sub-device becomes difficult, or disconnection easily occurs after the connection is established.
Based on this, the disclosure proposes a control method of a wireless backhaul link, and fig. 1 is a flowchart illustrating a control method of a wireless backhaul link according to an exemplary embodiment, and as shown in fig. 1, the control method of a wireless backhaul link is used in a sub-device, and includes the following steps.
In step S11, determining whether a frequency band to be evaluated occupied by the master device is suitable for establishing the multi-band wireless backhaul link in the case that the wireless backhaul link with the master device is in a disconnected state; the multi-band wireless backhaul link indicates that data between the master device and the child device can be transmitted over the multi-band wireless backhaul link.
A wireless backhaul link refers to a wireless link that communicates data back from a child device to a master device in a mesh network. In the mesh network, the sub-devices can perform relay transmission through a plurality of devices, data is transmitted to the main device, and after the main device receives the data, feedback data is transmitted to the sub-devices through the wireless backhaul link, so that bidirectional data transmission on the wireless backhaul link is ensured. The sub-equipment can be to-be-networked equipment, and can also be understood as equipment which is not connected to a network, and is equipment which needs to be accessed to the network, wherein the sub-equipment is in a factory state, and the factory state refers to a state that the sub-equipment is not configured, set or modified by a user after being produced by a manufacturer; the master device is an initialized device, and may be understood as a device that has completed initial setup and configuration.
The main device and the sub device can be routers, expanders, wireless bridges, smart home, mobile phones, computers and other devices, and the devices can be used as relay devices in a mesh network and also can be used as source devices and target devices. The relay device refers to a device which plays a role of a bridge for data forwarding when data are mutually transmitted between the source device and the target device, and can be used for forwarding the data sent by the source device to the target device and forwarding the data sent by the target device to the source device.
The multi-band wireless backhaul link refers to a multi-band wireless backhaul link established between a main device and a sub-device, and the main device and the sub-device can communicate on the multi-band wireless backhaul links at the same time; the single-band wireless backhaul link refers to a single-band wireless backhaul link established between a main device and a sub-device, and the main device and the sub-device can communicate on the single-band wireless backhaul link.
It is understood that the multiple frequency bands referred to in this disclosure include 2.4GHz band, 5GHz band, 6GHz band, and the like.
Determining that a wireless backhaul link between the child device and the master device is in a disconnected state when the child device is in any of:
In the first case, the child device is in an initialized state. The sub-device being in the initialized state may be understood as a state after the sub-device is initialized after being purchased by a user, where the sub-device is not yet connected to the network, and a wireless backhaul link between the sub-device and the main device is not yet established.
For example, taking the child device as a mobile phone and the main device as a router, after the user initializes the purchased mobile phone, the mobile phone is in an initialized state, but the mobile phone does not establish a wireless backhaul link with the router yet.
For another example, taking the main device as the router a and the sub device as the router B, after the user initializes the purchased router B, the router B is in an initialized state, and at this time, the router B has not established a wireless backhaul link with the router a yet.
In the second case, the child device is in a reboot state. After the sub-equipment is restarted after power failure or manual restarting by a user, the sub-equipment and the main equipment do not establish a wireless backhaul link.
And in a third case, the wireless backhaul link between the sub-device and the main device is in a disconnected reconnection state. Under the condition that the environmental background noise of the home environment where the sub-equipment is located is high, the wireless backhaul link between the sub-equipment and the main equipment is disconnected, at the moment, the wireless backhaul link between the sub-equipment and the main equipment is originally in a connection state, and the wireless backhaul link between the sub-equipment and the main equipment is converted into a disconnection state due to the environmental background noise.
In all three cases, it may be determined that the wireless backhaul link between the master device and the slave device is in a disconnected state.
When the wireless backhaul link between the sub-equipment and the main equipment is a single-band wireless backhaul link or a multi-band wireless backhaul link is disconnected, and the communication frequency band between the sub-equipment and the main equipment is not suitable for establishing the multi-band wireless backhaul link, the sub-equipment and the main equipment are controlled to establish the single-band wireless backhaul link.
When the wireless backhaul link between the sub-equipment and the main equipment is a single-band wireless backhaul link or a multi-band wireless backhaul link is disconnected, and the communication frequency band between the sub-equipment and the main equipment is suitable for establishing the multi-band wireless backhaul link, the sub-equipment and the main equipment are controlled to establish the multi-band wireless backhaul link.
The advantages of the multi-band wireless backhaul link over the single-band wireless backhaul link are: the multi-band wireless backhaul link can enable the main device and the sub-device to simultaneously transmit data in a plurality of frequency bands, so that the data volume which can be simultaneously transmitted between the main device and the sub-device is more, and the congestion of data transmission is avoided.
The sub-device may scan the channel in which the main device is located, so as to learn the frequency band to be evaluated occupied by the main device. The frequency band has close relation with the channels, the frequency band can be divided into a plurality of channels, each channel has a respective center frequency and frequency range, and the main device and the sub-devices occupy the channels to transmit data.
For example, for a frequency band of 2.4GHz, the frequency band of 2.4GHz may be divided into 14 channels, each having a frequency range of approximately 5MHz, e.g., channel 1 having a frequency range of 2.412GHz to 2.417GHz, channel 2 having a frequency range of 2.417GHz to 2.422GHz …, and so on to obtain the frequency range of channel 14.
As another example, for the 5GHz band, the 5GHz band may be divided into 25 channels at most.
After the sub-equipment scans the channel occupied by the main equipment, the frequency band of the channel can be determined, and the frequency band of the channel occupied by the main equipment is the frequency band to be evaluated occupied by the main equipment.
In step S12, in the case that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, a target frequency band with communication quality meeting a preset condition is selected from the frequency bands to be evaluated.
And if the communication frequency band between the main device and the sub device is determined to be unsuitable for establishing the multi-frequency-band wireless backhaul link under the condition that any one of all the frequency bands to be evaluated occupied by the main device is unsuitable for establishing the multi-frequency-band wireless backhaul link, the target frequency band with the communication quality meeting the preset condition is screened out of all the frequency bands to be evaluated occupied by the main device, so that the single-frequency-band wireless backhaul link between the main device and the sub device is established by the target frequency band.
For example, if the currently occupied frequency bands to be evaluated of the main device have 2.4GHz and 5GHz, it is determined whether the main device and the sub device can respectively establish stable wireless backhaul links in the two frequency bands to be evaluated of 2.4GHz and 5GHz, and if the stable wireless backhaul links cannot be established, it is determined that the two frequency bands to be evaluated are not suitable for establishing multi-frequency band wireless backhaul links.
Since the multi-band wireless backhaul link between the main device and the sub-device requires that a stable wireless backhaul link can be established on all the frequency bands to be evaluated occupied by the main device, the main device and the sub-device are considered to be unsuitable for establishing the multi-band wireless backhaul link at the current moment under the condition that the stable wireless backhaul link cannot be established on any one of all the frequency bands to be evaluated occupied by the main device.
The fact that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link means that the current state of the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link; the application of the frequency band to be evaluated in establishing the multi-band wireless backhaul link means that the current state of the frequency band to be evaluated is applicable in establishing the multi-band wireless backhaul link.
The target frequency band with the communication quality meeting the preset condition can be the frequency band with the best communication quality in all the frequency bands to be evaluated occupied by the main equipment.
In step S13, a single-band wireless backhaul link is established with the master device on the target band.
For example, in 2.4GHz and 5GHz occupied by the master device, when the communication quality of 2.4GHz meets a preset condition and the communication quality of 5GHz does not meet the preset condition, the slave device is controlled to establish a single-band wireless backhaul link with the master device at 2.4 GHz.
According to the technical scheme, under the condition that the wireless backhaul link between the sub-equipment and the main equipment is disconnected, the communication quality of the frequency band to be evaluated occupied by the main equipment can be evaluated, whether the frequency band to be evaluated is suitable for establishing the stably connected multi-frequency band wireless backhaul link is determined, if not, a target frequency band with the quality meeting the preset condition is screened out of the frequency band to be evaluated occupied by the main equipment, and the sub-equipment is controlled to establish single-frequency band wireless backhaul connection with the main equipment on the target frequency band.
In the process, under the condition that a wireless backhaul link between the sub-equipment and the main equipment is disconnected, the method and the device can evaluate whether the main equipment and the sub-equipment can establish multi-band wireless backhaul connection again, if the multi-band wireless backhaul connection cannot be established, the sub-equipment and the main equipment can be controlled to establish single-frequency wireless backhaul connection, so that connection between the sub-equipment and the main equipment can be restored after the sub-equipment is disconnected from the wireless backhaul connection between the main equipment, and the condition that the sub-equipment is disconnected from the network is avoided.
Taking a master device as a router A and a slave device as a router B as an example. Under the condition that a wireless backhaul link between the router B and the router A is disconnected, the to-be-evaluated frequency band occupied by the router A can be evaluated to be suitable for establishing multi-band wireless backhaul connection, if multi-band wireless backhaul connection cannot be established, the router B and the router A are controlled to establish single-band wireless backhaul connection, so that after the router B is disconnected from the router A due to factors such as environmental noise, restarting and initializing, the connection between the router B and the router A can be automatically restored, the networking state of the router B is actively restored, and further, other mobile phones, computers and other terminals connected with the router B can also be automatically restored to network connection.
Taking the main equipment as a router and the sub equipment as a mobile phone as an example, under the condition that a wireless backhaul link between the mobile phone and the router is disconnected, whether the multi-band wireless backhaul connection can be established between the mobile phone and the router can be evaluated, if the multi-band wireless backhaul connection cannot be established, the mobile phone and the router can be controlled to establish single-frequency wireless backhaul connection, so that after the mobile phone is disconnected with the router due to factors such as environmental noise, restarting and initializing, the single-frequency network connection between the mobile phone and the router can be automatically restored, the networking state of the mobile phone is actively restored, and the user experience is improved.
A specific embodiment of the above step S11 is described below, and the embodiment is used to determine, by definition, whether the frequency band to be evaluated is suitable for establishing the multi-band wireless backhaul link, where the determination conditions include the following conditions.
And under the condition that the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold value, determining that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link.
The method may include determining that the frequency band to be evaluated is not suitable for establishing a multi-frequency band wireless backhaul link when a channel utilization rate of a target channel in the frequency band to be evaluated currently occupied by the master device is greater than a preset threshold.
Before the sub-equipment establishes a wireless backhaul link with the main equipment, the sub-equipment scans a target channel occupied by the main equipment and then sends a detection request to the main equipment on the target channel occupied by the main equipment. Thus, the channel utilization of the target channel currently occupied by the master device may also be regarded as the channel utilization of the target channel occupied by the slave device transmitting the probe request.
For example, if the sub-device scans that the channels occupied by the main device include channel 1 in the 2.4GHz band, channel 5 in the 5GHz band, and channel 8 in the 6GHz band, then the sub-device may send a probe request to the main device on channel 1 in the 2.4GHz band, channel 5 in the 5GHz band, and channel 8 in the 6GHz band at the same time, so as to determine whether the channel utilization rate on three channels, i.e., channel 1 in the 2.4GHz band, channel 5 in the 5GHz band, and channel 8 in the 6GHz band is greater than the threshold.
Channel utilization refers to the proportion of channel resources occupied by the data actually and effectively transmitted, and is an index for measuring the utilization rate of the channel resources, and the higher the channel utilization rate is, the more effectively the channel resources are utilized. Channel utilization = transmission time/(transmission time + idle time). It is assumed that in a certain wireless network, a transmission time for transmitting data within 1 hour for one channel is 30min, an idle time is 30min, and a channel utilization of the channel is 50%.
When the channel utilization rate is greater than a preset threshold value, the target channel is relatively busy under normal conditions, and the frequency band to be evaluated, which is unfavorable for establishing a multi-frequency-band wireless backhaul link, can be relatively busy. Therefore, under the condition that the channel utilization rate of the target channel in the frequency band to be evaluated is larger than the preset threshold, the frequency band to be evaluated is considered to be busy, and the frequency band to be evaluated is determined to be unfavorable for establishing the stable connection multi-band wireless backhaul link.
A condition B, sending a detection request to the main equipment on the frequency band to be evaluated; and under the condition that the detection response returned by the main equipment on the frequency band to be evaluated is not received in excess of a first preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link.
Referring to fig. 3, a sub-device sends a probe request to a main device on a frequency band to be evaluated occupied by the scanned main device; if the sub-equipment does not receive the detection response returned by the main equipment on the frequency band to be evaluated in the condition that the first preset time length is exceeded, the frequency band to be evaluated is considered to be unsuitable for establishing the multi-frequency band wireless backhaul link.
Under the condition that the sub-equipment does not receive the detection response returned by the main equipment on the frequency band to be evaluated in the first preset time period, the main equipment may not receive the detection request sent by the sub-equipment, or the main equipment may already receive the detection request sent by the sub-equipment, but the sub-equipment does not receive the detection response sent by the main equipment, in either case, the data transmission on the frequency band to be evaluated is slow, the phenomenon of overtime occurs due to poor communication quality is indicated, and therefore, it can be determined that the frequency band to be evaluated cannot be suitable for the multi-frequency band wireless backhaul link for establishing stable connection.
The probe request is a probe request (probe message), and the probe request includes a device identifier of the sub-device, a frequency band supported by the sub-device, and a media access control address (MAC) for connecting each frequency band. The probe request has two functions, namely, to receive a probe response so as to determine whether the currently occupied frequency band to be evaluated has the phenomenon of overtime data transmission. And secondly, the frequency band supported by the sub-equipment is transmitted to the main equipment, so that the main equipment screens the frequency band to be evaluated, which is communicated with the sub-equipment, from the frequency bands supported by the main equipment based on the frequency bands supported by the sub-equipment.
The probe response is a probe response (response message), and the probe response contains response information to the probe request, whether the master device supports the multi-band wireless backhaul transmission function, and if the master device supports the multi-band wireless backhaul transmission function, which frequency bands to be evaluated are supported by the master device.
For example, the probe request sent by the sub-device may carry that the self-supported frequency bands have 2.5GHz, 5GHz and 6GHz, and the main device determines that the self-supported frequency bands have 2.5GHz and 5GHz, and then the main device may send two self-supported frequency bands to be evaluated, namely 2.5GHz and 5GHz, to the sub-device, where the sub-device uses the frequency bands to be evaluated supported by the main device as the main device, and in the subsequent data transmission process, the two frequency bands to be evaluated, namely 2.5GHz and 5GHz, are adopted for data transmission.
Because the main equipment has good performance, the main equipment with better performance can support the multi-band wireless backhaul transmission function, and the multi-band wireless backhaul link can be established between the main equipment and the sub-equipment; a relatively poor performing master device may not be able to support the multi-band wireless backhaul transport function, and this portion of the master device may not be able to establish a multi-band wireless backhaul link with a child device.
The reply information to the probe request included in the probe response sent by the master device includes a Service Set Identifier (SSID) that is used to distinguish between different wireless networks, which may be understood as the name of the wireless network.
Because the environment background noise of the home environment where the sub-equipment is located is high, interference signals exist in the communication environment between the sub-equipment and the main equipment, so that the detection request sent by the sub-equipment cannot smoothly reach the main equipment, the sub-equipment can be controlled to periodically send the detection request, and the main equipment can be ensured to receive the detection request as much as possible.
And C, under the condition that the connection between the main equipment and the frequency band to be evaluated is not successfully established beyond a second preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link.
And under the condition that the sub-equipment is still not successfully connected with the main equipment after exceeding the second preset time, determining that the communication quality on the frequency band to be evaluated is poor, and is not suitable for establishing a stably connected multi-band wireless backhaul link.
The connection process between the sub-equipment and the main equipment is as follows, and the data transmitted in the connection process are transmitted on the frequency band to be evaluated:
(1) The sub-equipment sends an authentication request to the main equipment; the master device returns an authentication response to the slave device, wherein the authentication response contains encryption information.
(2) The sub device performs a four-way handshake procedure with the main device based on the encryption information, which may be regarded as an encryption procedure.
(3) After the encryption process is finished, the sub-equipment sends an association request to the main equipment, the main equipment replies an association request response to the sub-equipment, and if the sub-equipment successfully receives the association request response, the sub-equipment successfully establishes connection with the main equipment.
The present disclosure may set a second preset duration for the above connection establishment process, and if the connection process is not completed within the second preset duration, it is indicated that it is difficult to establish communication on the frequency band to be evaluated, and the method is not suitable for establishing a multi-band wireless backhaul link.
It can be seen that the above condition a may determine whether the frequency band to be evaluated is idle, the condition B may determine whether data transmission on the frequency band to be evaluated may timeout, the condition C may determine whether communication connection on the frequency band to be evaluated is difficult, and any one of the above three conditions may determine whether the frequency band to be evaluated is suitable for establishing a multi-band wireless backhaul link.
It is understood that the above three conditions may be combined in any two or three combinations. Three conditions are illustrated in combination.
Referring to fig. 2, the evaluation and judgment of the condition a are first performed, and if the channel utilization rate of the channels in all the frequency bands to be evaluated occupied by the main device is less than or equal to a preset threshold value, it is determined that all the frequency bands to be evaluated are idle; the next step of evaluation and judgment of the condition B can be carried out, whether the sub-equipment receives detection responses returned by the main equipment on all the frequency bands to be evaluated or not is determined, if the detection responses are received in the first preset time, the data transmission on all the frequency bands to be evaluated is determined not to be overtime, and the detection of all the frequency bands to be evaluated is successful; and (3) the next step of evaluation and judgment of the condition C can be carried out, whether the sub-equipment tries to establish connection with the main equipment within the second preset time period is determined, and if the connection failure exists, the condition that all the frequency bands to be evaluated are not suitable for the connection of the multi-band wireless backhaul link is also indicated.
In this example, in the condition a, the next judgment of the condition B can be performed only if the channel utilization of the channels in all the frequency bands to be evaluated occupied by the master device is less than or equal to the preset threshold. Similarly, in the condition B, after the sub-device receives the detection responses returned by the main device on all the frequency bands to be evaluated within the first preset duration, the next condition C can be judged.
Of course, under the condition that the condition A, the condition B and the condition C are all passed, the frequency band to be evaluated occupied by the main equipment is determined to be suitable for establishing the multi-band wireless backhaul link.
For example, under the condition that the channel utilization rate of the channels in all the frequency bands to be evaluated occupied by the master device is smaller than or equal to a preset threshold value, sending a detection request to the master device; under the condition that the sub-equipment receives detection responses returned by the main equipment on all frequency bands to be evaluated in a first preset time period, connection is established with the main equipment; and under the condition that the connection between the main equipment and the frequency band to be evaluated is successfully established within the second preset time period, determining that the frequency band to be evaluated is suitable for establishing the multi-frequency band wireless backhaul link of stable connection.
It can be understood that after all the frequency bands to be evaluated occupied by the main device can pass through the judgment of the condition a, the condition B and the condition C, if the judgment is still made that the method is suitable for establishing the multi-band wireless backhaul link, the multi-band wireless backhaul links of the main device and the sub-device on the frequency bands to be evaluated can be established. If the to-be-evaluated frequency band is not suitable for establishing the multi-frequency band wireless backhaul link after the judgment of the condition A, the condition B and the condition C is carried out in all the to-be-evaluated frequency bands occupied by the main equipment, the multi-frequency band wireless backhaul links of the main equipment and the sub equipment on all the to-be-evaluated frequency bands cannot be established.
Through the technical scheme, whether the frequency band to be evaluated occupied by the main equipment is suitable for establishing the multi-frequency band wireless backhaul link is defined, so that after the sub-equipment is disconnected from the wireless backhaul connection between the main equipment, whether the sub-equipment can recover the multi-frequency band wireless backhaul link with the main equipment or not is judged through the judging conditions, and the multi-frequency band wireless backhaul link or the single-frequency band wireless backhaul link is further selected to be equipped between the main equipment and the sub-equipment.
The following describes a specific embodiment related to the step S12, which is used to explain how to screen out the target frequency band from the multiple frequency bands to be evaluated.
And under the condition that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, taking the frequency band to be evaluated which meets the following most conditions as the target frequency band:
the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold, the main equipment and the sub equipment can perform data transmission on the frequency band to be evaluated, and the main equipment and the sub equipment can establish successful connection on the frequency band to be evaluated.
The above three conditions correspond to the above condition a, condition B and condition C, respectively, and the more the above conditions are satisfied, the more stable the communication quality is, so the more the above conditions are satisfied, the more the frequency band to be evaluated is taken as the target frequency band, and the frequency band with the best communication quality can be selected from all the frequency bands to be evaluated occupied by the main device as the target frequency band.
In some scenarios, if the master device supports the frequency band to be evaluated of 2.4GHz and 5GHz, and the master device currently occupies channel 1 in the frequency band of 2.4GHz and channel 2 in the frequency band of 5 GHz. After the condition A screening, determining that the channel utilization rates of the channel 1 and the channel 2 are smaller than or equal to a threshold value, and determining that the frequency bands to be evaluated of 2.4GHz and 5GHz are in an idle state; then judging the condition B, and determining that the sub-equipment can receive detection response in a first preset time period and on two frequency bands to be evaluated, namely 2.4GHz and 5Ghz after judging the condition B; and then judging the condition C, and determining that the sub-equipment can be successfully connected with the main equipment in the 2.4GHz frequency band only within the second preset duration and cannot be successfully connected in the 5GHz frequency band after judging the condition C.
Therefore, the frequency band to be evaluated which satisfies the condition most is 2.4GHz, which satisfies the condition A, the condition B and the condition C at the same time; the frequency band 5Ghz to be evaluated can only meet the condition A and the condition B, and cannot meet the condition C, so that 2.4GHz is taken as a target frequency band, and the sub-equipment is controlled to communicate with the main equipment on a single-frequency-band wireless backhaul link of the 2.4GHz frequency band.
As can be appreciated, referring to fig. 4, the backhaul link state of the sub-device may be reported to the main device, where the backhaul link state is a single-band wireless connection state or a multi-band wireless connection state, and is used to instruct the main device to control the sub-device to maintain the current backhaul link state; and receiving indication information sent by the main equipment, wherein the indication information is used for indicating the sub-equipment to keep the current backhaul link state.
The sub-equipment reports the state of the return link to the main equipment, and the main equipment records the state of the return link and sends indication information to the sub-equipment to indicate the sub-equipment to keep the current state of the return link, so that the sub-equipment is not required to repeatedly switch the multi-band wireless return link and the single-band wireless return link, and the stability of the return link is ensured.
According to the technical scheme, on the basis that the sub-equipment cannot establish multi-band wireless backhaul communication with the main equipment, the sub-equipment can be controlled to establish single-band wireless backhaul communication with the main equipment, so that the situation that the sub-equipment cannot be connected with the network is avoided; and the target frequency band with better communication quality is selected from a plurality of frequency bands to be evaluated, so that the communication quality between the main equipment and the sub-equipment can be ensured to a certain extent.
Fig. 5 is a block diagram of a control apparatus of a wireless backhaul link according to an exemplary embodiment. Referring to fig. 5, the control apparatus 500 of the wireless backhaul link includes: a determining module 510, a screening module 520 and a connecting module 530.
A determining module 510, configured to determine whether a frequency band to be evaluated occupied by the master device is suitable for establishing a multi-band wireless backhaul link in a case where the wireless backhaul link with the master device is in a disconnected state; the multi-band wireless backhaul link indicates that data between the master device and the child device can be transmitted over the multi-band wireless backhaul link;
The screening module 520 is configured to screen a target frequency band with communication quality meeting a preset condition from the frequency band to be evaluated, if the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link;
a connection module 530 configured to establish a single-band wireless backhaul link with the master device over the target band.
Optionally, the control device 500 of the wireless backhaul link includes:
a link determining module configured to determine that a wireless backhaul link with the master device is in a disconnected state, in a case where the slave device is in any one of the following states:
the sub-equipment is in an initialization state, the sub-equipment is in a restarting state, and a wireless backhaul link between the sub-equipment and the main equipment is in a disconnection reconnection state.
Optionally, the determining module 510 includes:
the first determining submodule is configured to determine that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link under the condition that the channel utilization rate of the channels in the frequency band to be evaluated is greater than a preset threshold value.
Optionally, the determining module 510 includes:
a probe request sending sub-module configured to send a probe request to the master device on the frequency band to be evaluated;
And the second determining submodule is configured to determine that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link in the case that the detection response returned by the main device on the frequency band to be evaluated is not received for more than a first preset time period.
Optionally, the probe request sending submodule:
and the periodic transmission submodule is configured to periodically transmit a detection request to the master device on the frequency band to be evaluated.
Optionally, the determining module 510 includes:
and the third determination submodule is configured to determine that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link under the condition that the connection between the third determination submodule and the main equipment is not established on the frequency band to be evaluated successfully after a second preset time period is exceeded.
Optionally, the determining module 510 includes:
the judging submodule is configured to send a detection request to the main equipment under the condition that the channel utilization rate of the channels in all the frequency bands to be evaluated is smaller than or equal to a preset threshold value;
the connection establishment sub-module is configured to establish connection with the main equipment under the condition that detection responses returned by the main equipment on all the frequency bands to be evaluated are received within a first preset time period;
And the fourth determination submodule is configured to determine that all the frequency bands to be evaluated are suitable for establishing the multi-frequency band wireless backhaul link under the condition that connection with the main equipment is successfully established on all the frequency bands to be evaluated within a second preset time period.
Optionally, the control device 500 of the wireless backhaul link includes:
and the multi-band wireless backhaul link establishment module is configured to establish the multi-band wireless backhaul link with the main equipment under the condition that the frequency band to be evaluated is suitable for establishing the multi-band wireless backhaul link.
Optionally, the screening module 520 includes:
a screening sub-module, configured to, in a case where the frequency band to be assessed is not suitable for establishing the multi-band wireless backhaul link, take the frequency band to be assessed that satisfies the following condition most as the target frequency band:
the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold, the main equipment and the sub equipment can perform data transmission on the frequency band to be evaluated, and the main equipment and the sub equipment can establish successful connection on the frequency band to be evaluated.
Optionally, the control device 500 of the wireless backhaul link includes:
the state reporting module is configured to report the state of a return link of the sub-equipment to the main equipment, wherein the state of the return link is a single-band wireless connection state or a multi-band wireless connection state;
And the receiving module is configured to receive indication information sent by the main equipment, wherein the indication information is used for indicating the sub-equipment to keep the backhaul link state.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
The present disclosure also provides a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of controlling a wireless backhaul link provided by the present disclosure.
Fig. 6 is a block diagram illustrating a control apparatus 600 for a wireless backhaul link according to an example embodiment. For example, the control device 600 of the wireless backhaul link may be a smart home, a router, an extender, a wireless bridge, a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 6, apparatus 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an input/output interface 612, a sensor component 614, and a communication component 616.
The processing component 602 generally controls overall operation of the apparatus 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
The memory 604 is configured to store various types of data to support operations at the apparatus 600. Examples of such data include instructions for any application or method operating on the apparatus 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 606 provides power to the various components of the device 600. The power supply components 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 600.
The multimedia component 608 includes a screen between the device 600 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 600 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.
The input/output interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 614 includes one or more sensors for providing status assessment of various aspects of the apparatus 600. For example, the sensor assembly 614 may detect the open/closed state of the device 600, the relative positioning of the components, such as the display and keypad of the device 600, the sensor assembly 614 may also detect a change in position of the device 600 or a component of the device 600, the presence or absence of user contact with the device 600, the orientation or acceleration/deceleration of the device 600, and a change in temperature of the device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 616 is configured to facilitate communication between the apparatus 600 and other devices in a wired or wireless manner. The device 600 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the control methods of the wireless backhaul links described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 604, including instructions executable by processor 620 of apparatus 600 to perform the method of controlling a wireless backhaul link described above. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
The apparatus may be a stand-alone electronic device or may be part of a stand-alone electronic device, for example, in one embodiment, the apparatus may be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit may be an IC or may be a collection of ICs; the chip may include, but is not limited to, the following: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit ), FPGA (Field Programmable Gate Array, programmable logic array), DSP (Digital Signal Processor ), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SOC, system on Chip or System on Chip), etc. The integrated circuit or the chip may be configured to execute executable instructions (or codes) to implement the control method of the wireless backhaul link. The executable instructions may be stored on the integrated circuit or chip or may be retrieved from another device or apparatus, such as the integrated circuit or chip including a processor, memory, and interface for communicating with other devices. The executable instructions may be stored in the memory, which when executed by the processor implement the wireless backhaul link control method described above; alternatively, the integrated circuit or chip may receive the executable instructions through the interface and transmit the executable instructions to the processor for execution, so as to implement the control method of the wireless backhaul link.
In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described control method of a wireless backhaul link when executed by the programmable apparatus.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (13)
1. A method for controlling a wireless backhaul link, performed by a child apparatus, comprising:
Under the condition that a wireless backhaul link between the wireless backhaul link and a main device is in a disconnected state, determining whether a frequency band to be evaluated occupied by the main device is suitable for establishing a multi-frequency band wireless backhaul link; the multi-band wireless backhaul link indicates that data between the master device and the child device can be transmitted over the multi-band wireless backhaul link;
screening a target frequency band with communication quality meeting a preset condition from the frequency band to be evaluated under the condition that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link;
and establishing a single-band wireless backhaul link with the main equipment on the target frequency band.
2. The method according to claim 1, wherein the method further comprises: determining that a wireless backhaul link with the master device is in a disconnected state if the slave device is in any one of:
the sub-equipment is in an initialization state, the sub-equipment is in a restarting state, and a wireless backhaul link between the sub-equipment and the main equipment is in a disconnection reconnection state.
3. The method of claim 1, wherein the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-band wireless backhaul link comprises:
And under the condition that the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold value, determining that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link.
4. The method of claim 1, wherein the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-band wireless backhaul link comprises:
transmitting a detection request to the main equipment on the frequency band to be evaluated;
and under the condition that the detection response returned by the main equipment on the frequency band to be evaluated is not received in excess of a first preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link.
5. The method of claim 4, wherein the sending a probe request to the master device over the frequency band under evaluation comprises:
and periodically sending a detection request to the master device on the frequency band to be evaluated.
6. The method of claim 1, wherein the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-band wireless backhaul link comprises:
and under the condition that the connection between the main equipment and the frequency band to be evaluated is not successfully established in the second preset time period, determining that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link.
7. The method of claim 1, wherein the determining whether the frequency band to be evaluated occupied by the master device is suitable for establishing a multi-band wireless backhaul link comprises:
transmitting a detection request to the main equipment under the condition that the channel utilization rate of the channels in all the frequency bands to be evaluated is smaller than or equal to a preset threshold value;
under the condition that detection responses returned by the main equipment on all the frequency bands to be evaluated are received in a first preset time period, connection is established with the main equipment;
and under the condition that connection with the main equipment is successfully established on all the frequency bands to be evaluated within a second preset time period, determining that all the frequency bands to be evaluated are suitable for establishing the multi-band wireless backhaul link.
8. The method according to claim 1, wherein the method further comprises:
and under the condition that the frequency band to be evaluated is suitable for establishing the multi-band wireless backhaul link, establishing the multi-band wireless backhaul link with the main equipment.
9. The method according to claim 1, wherein, in the case that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, selecting a target frequency band whose communication quality satisfies a preset condition from the frequency bands to be evaluated, comprises:
And under the condition that the frequency band to be evaluated is not suitable for establishing the multi-band wireless backhaul link, taking the frequency band to be evaluated which meets the following most conditions as the target frequency band:
the channel utilization rate of the channel in the frequency band to be evaluated is larger than a preset threshold, the main equipment and the sub equipment can perform data transmission on the frequency band to be evaluated, and the main equipment and the sub equipment can establish successful connection on the frequency band to be evaluated.
10. The method according to claim 1, wherein the method further comprises:
reporting the backhaul link state of the sub-equipment to the main equipment, wherein the backhaul link state is a single-band wireless connection state or a multi-band wireless connection state;
and receiving indication information sent by the main equipment, wherein the indication information is used for indicating the sub-equipment to keep the backhaul link state.
11. A control device for a wireless backhaul link, comprising:
the determining module is configured to determine whether a frequency band to be evaluated occupied by the main equipment is suitable for establishing a multi-band wireless backhaul link or not under the condition that the wireless backhaul link between the determining module and the main equipment is in a disconnected state; the multi-band wireless backhaul link indicates that data between the master device and the slave device can be transmitted over the multi-band wireless backhaul link;
The screening module is configured to screen a target frequency band with communication quality meeting preset conditions from the frequency band to be evaluated under the condition that the frequency band to be evaluated is not suitable for establishing the multi-frequency band wireless backhaul link;
and the connection module is configured to establish a single-band wireless backhaul link with the main device on the target frequency band.
12. A control device for a wireless backhaul link, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
the method of any one of claims 1 to 10.
13. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the method of any of claims 1 to 10.
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| CN115942354A (en) * | 2022-12-28 | 2023-04-07 | 深圳创维数字技术有限公司 | Multilink communication data transmission method and device, electronic equipment and storage medium |
| CN115988671A (en) * | 2022-12-28 | 2023-04-18 | 深圳创维数字技术有限公司 | Wireless mesh network return link distribution method, device, electronic equipment and medium |
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