CN110087249B - Method for avoiding wireless communication interference and wireless communication system - Google Patents
Method for avoiding wireless communication interference and wireless communication system Download PDFInfo
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Abstract
The invention discloses a method for avoiding wireless communication interference and a wireless communication system, comprising the following steps: before the network manager and the wireless communication equipment do not carry out wireless communication, carrying out communication quality evaluation on each channel to obtain channel and modulation mode combination and a switching sequence rule; when the wireless communication equipment is accessed, the network manager sends the combination of the channel and the modulation mode and the switching sequence rule to the wireless communication equipment; when interference occurs, the network manager and the wireless communication equipment respectively carry out switching and configuration of the combination of the channels and the modulation modes in multiple groups of the combination of the channels and the modulation modes according to the switching sequence rule. The invention ensures that the network manager and the wireless communication equipment can be switched to the same channel and modulation mode combination and configuration, ensures the subsequent continuous communication of the network manager and the wireless communication equipment under the new channel and modulation mode configuration, and ensures the stability of the wireless communication between the network manager and the wireless communication equipment under the complex electromagnetic environment.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a wireless communication system for avoiding wireless communication interference.
Background
With the increase of the application range of wireless communication and the increase of the number of wireless communication devices, the number of wireless signals in the environment is more and more. Due to the limitation of the frequency range, the frequency resources of the wireless signals are very tight, and therefore interference between the wireless signals is caused due to the close use frequency between the wireless signals in the environment, so that the quality of the wireless communication signals is reduced.
In such an environment, how to ensure the smoothness of the wireless communication link between the devices and ensure the stability and accuracy of information transmission and reception between the devices has been an important research direction all the time.
Disclosure of Invention
In view of the above, the present invention provides a method and a wireless communication system for avoiding wireless communication interference, so as to achieve stable wireless communication between devices in a complex electromagnetic environment.
The technical scheme of the invention is realized as follows:
a method of avoiding wireless communication interference, comprising:
the method comprises the steps that a network manager carries out communication quality evaluation on each channel under each modulation mode supported by the network manager, determines alternative channels for carrying out wireless communication between the network manager and wireless communication equipment and available modulation modes corresponding to the alternative channels according to evaluation results, combines each alternative channel and each available modulation mode corresponding to the alternative channel respectively to obtain multiple groups of channel and modulation mode combinations, and generates a switching sequence rule between the multiple groups of channel and modulation mode combinations;
the network manager selects a group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations, and sets the channel and modulation mode used for wireless communication between the network manager and the wireless communication equipment;
when the wireless communication equipment is accessed, the network manager sends the combination of the multiple groups of channels and modulation modes and the switching sequence rule to the wireless communication equipment;
when the network manager detects that the wireless communication with the wireless communication equipment is interfered, the network manager switches the channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and sets the switched channel and modulation mode combination as a new channel and modulation mode for wireless communication with the wireless communication equipment;
when the wireless communication device detects that the wireless communication with the network manager is interfered, the wireless communication device switches the channel and modulation mode combination which carries out wireless communication with the network manager according to the switching sequence rule, and sets the switched channel and modulation mode combination as a new channel and modulation mode which are used for carrying out wireless communication with the network manager.
Further, the network manager stores the multiple groups of channel and modulation mode combinations and the switching sequence rule in a signal selection rule list;
when the wireless communication equipment is accessed, the network manager issues the signal selection rule list to the wireless communication equipment, and the wireless communication equipment stores the signal selection rule list locally.
Further, the network manager performs communication quality evaluation on each channel under each modulation mode supported by the network manager, including:
the influence of the wireless signals existing in the environment on the communication quality of each channel in each modulation mode supported by the network manager is evaluated.
Further, the evaluating an influence of a wireless signal existing in an environment on a communication quality of each channel in each modulation mode supported by the network manager includes:
the network manager traverses each supported channel;
in each of the traversed supported channels, the network manager traverses each of the supported modulation modes;
the impact of the radio signals present in the environment on the communication quality of each supported channel and supported modulation scheme combination is evaluated.
Further, the multiple groups of channel and modulation mode combinations are all combinations of channels and modulation modes meeting the communication quality requirement.
Further, the network manager adopts a software defined radio mode to obtain the supported modulation modes and channels.
A wireless communication system comprising a network manager and a wireless communication device; wherein,
the network manager is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager, determine, according to an evaluation result, an alternative channel performing wireless communication with the wireless communication device and an available modulation mode corresponding to each alternative channel, combine each alternative channel and each available modulation mode corresponding to the alternative channel, obtain a plurality of groups of combinations of channels and modulation modes, and generate a switching sequence rule between the groups of combinations of channels and modulation modes; selecting one group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations, and setting the channel and modulation mode combination as a channel and a modulation mode used for wireless communication with the wireless communication equipment; when the wireless communication equipment is accessed, the multi-group channel and modulation mode combination and the switching sequence rule are issued to the wireless communication equipment; when detecting that the wireless communication with the wireless communication equipment is interfered, switching a channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for wireless communication with the wireless communication equipment;
the wireless communication device is used for carrying out wireless communication with the network manager; when accessing the network manager, receiving and storing the multiple groups of channel and modulation mode combinations and the switching sequence rule; and when the interference on the wireless communication with the network manager is detected, switching the channel and modulation mode combination for the wireless communication with the network manager according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for the wireless communication with the network manager.
Further, the network manager includes:
a first main processor and a first radio frequency transceiver; wherein,
the first main processor is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager, determine, according to an evaluation result, an alternative channel for performing wireless communication between the network manager and the wireless communication device and an available modulation mode corresponding to each alternative channel, combine each alternative channel and each available modulation mode corresponding to the alternative channel respectively to obtain a plurality of groups of combinations of channels and modulation modes, and generate a switching sequence rule between the plurality of groups of combinations of channels and modulation modes;
the first radio frequency transceiver is used for selecting one group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations and setting the channel and modulation mode combination as a channel and a modulation mode used for wireless communication with the wireless communication equipment; when the wireless communication equipment is accessed, the multi-group channel and modulation mode combination and the switching sequence rule are issued to the wireless communication equipment; and when detecting that the wireless communication with the wireless communication equipment is interfered, switching the channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for wireless communication with the wireless communication equipment.
Further, the first radio frequency transceiver is a programmable radio frequency transceiver, and the first radio frequency transceiver obtains the modulation mode and the channel supported by the network manager in a software defined radio mode.
Further, the multiple groups of channel and modulation mode combinations and the switching sequence rule are stored in a signal selection rule list, and the signal selection rule list is stored in the first main processor;
when the wireless communication device is accessed, the first radio frequency transceiver sends the signal selection rule list stored in the first main processor to the wireless communication device, and the wireless communication device stores the signal selection rule list locally.
It can be seen from the above solutions that, in the method and the wireless communication system for avoiding interference in wireless communication according to the present invention, before the network manager and the wireless communication device do not perform wireless communication, the communication quality evaluation is performed on each channel with respect to the interference in the environment, so as to obtain multiple sets of channel and modulation scheme combinations and a switching order rule between the multiple sets of channel and modulation scheme combinations, which can ensure that normal communication can still be performed between the network manager and the wireless communication device when the interference exists in the environment, and further, the network manager and the wireless communication device both maintain the same multiple sets of channel and modulation scheme combinations and switching order rules by issuing, so that in the subsequent communication process between the network manager and the wireless communication device, if new interference occurs in the environment, the communication between the network manager and the wireless communication device under the current signal and modulation scheme configuration is caused When interference or even interruption occurs, the network manager and the wireless communication device can switch and configure the combination of the channels and the modulation modes in the multiple groups of combinations of the channels and the modulation modes according to the same switching sequence rule, so that the network manager and the wireless communication device can be ensured to be switched to the same combination and configuration of the channels and the modulation modes, the subsequent continuous communication of the network manager and the wireless communication device under the configuration of the new channels and the modulation modes is ensured, and the stability of the wireless communication between the network manager and the wireless communication device under the complex electromagnetic environment is ensured.
Drawings
Fig. 1 is a flowchart of a method for avoiding interference in wireless communications according to an embodiment of the present invention;
FIG. 2 is a flow chart of a wireless communication command evaluation algorithm employed in an embodiment of the present invention;
FIG. 3 is a flowchart of the operation of the network manager side in an embodiment of the present invention;
fig. 4 is a flowchart of the operation of the wireless communication device side in the embodiment of the present invention;
fig. 5 is a diagram of a wireless communication system according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the method for avoiding interference in wireless communication according to the embodiment of the present invention mainly includes the following steps:
step 1, a network manager evaluates the communication quality of each channel under each modulation mode supported by the network manager, determines alternative channels for wireless communication between the network manager and wireless communication equipment and available modulation modes corresponding to the alternative channels according to evaluation results, combines each alternative channel and each available modulation mode corresponding to the alternative channel respectively to obtain a plurality of groups of combinations of channels and modulation modes, and generates a switching sequence rule between the plurality of groups of combinations of channels and modulation modes;
step 2, the network manager selects a group of channel and modulation mode combination from the group of channel and modulation mode combination, and sets the channel and modulation mode combination as the channel and modulation mode used for wireless communication between the network manager and the wireless communication equipment;
step 3, when the wireless communication equipment is accessed, the network manager combines a plurality of groups of channels and modulation modes and issues a switching sequence rule to the wireless communication equipment;
step 4, in the process of wireless communication between the network manager and the wireless communication equipment, when the network manager detects that the wireless communication between the network manager and the wireless communication equipment is interfered, the network manager switches the combination of the channel and the modulation mode of the wireless communication between the network manager and the wireless communication equipment according to the switching sequence rule, and sets the switched combination of the channel and the modulation mode as a new channel and a new modulation mode used for the wireless communication between the network manager and the wireless communication equipment;
and 5, in the process of carrying out wireless communication between the network manager and the wireless communication equipment, when the wireless communication equipment detects that the wireless communication equipment is interfered with the network manager, the wireless communication equipment switches the channel and modulation mode combination for carrying out wireless communication with the network manager according to the switching sequence rule, and sets the switched channel and modulation mode combination as a new channel and modulation mode used for carrying out wireless communication with the network manager.
In the embodiment of the present invention, step 4 and step 5 are performed independently on the network manager side and the wireless communication device side, respectively. When the wireless communication between the network manager and the wireless communication device is subject to electromagnetic interference in the environment, the network manager and the wireless communication device may not be able to communicate with each other due to the presence of the electromagnetic interference, and thus the respective states (such as channel, modulation mode, etc.) cannot be known by each other. In the embodiment of the present invention, when the interference in the environment has been completed in the previous steps 1 to 3, the network manager performs communication quality evaluation on each channel to obtain multiple sets of channel and modulation scheme combinations obtained when the interference exists in the environment before the network manager and the wireless communication device perform wireless communication, and a switching order rule between the multiple sets of channel and modulation scheme combinations, so that the channel and modulation scheme combinations can ensure that the network manager and the wireless communication device can still perform normal communication when the interference exists in the environment. After step 3, the network manager and the wireless communication device both store the same sets of channel and modulation scheme combinations and switching sequence rules, so that in the subsequent communication process between the network manager and the wireless communication device, if new interference occurs in the environment, which causes interference or even interruption of communication between the network manager and the wireless communication device under the current signal and modulation scheme configuration, the network manager and the wireless communication device can perform channel and modulation scheme combination switching and configuration in the sets of channel and modulation scheme combinations according to the same switching sequence rules, thereby ensuring that the network manager and the wireless communication device can switch to the same channel and modulation scheme combinations and configuration, and further ensuring the subsequent communication between the network manager and the wireless communication device under the new channel and modulation scheme configuration, the stability of wireless communication between the network manager and the wireless communication equipment in a complex electromagnetic environment is ensured.
In an alternative embodiment, the network manager stores multiple sets of channel and modulation mode combinations and switching sequence rules in a signal selection rule list;
when the wireless communication equipment is accessed, the network manager issues the signal selection rule list to the wireless communication equipment, and the wireless communication equipment stores the signal selection rule list locally.
The combination of the channel and the modulation mode and the storage of the switching sequence rule are carried out in a signal selection rule list mode, so that the centralized management and the transmission of the combination of the channel and the modulation mode and the switching sequence rule are facilitated.
In an optional implementation, the step 1 of performing, by the network manager, communication quality evaluation on each channel in each modulation scheme supported by the network manager includes:
the influence of the radio signal existing in the environment on the communication quality of each channel in each modulation scheme supported by the network manager is evaluated.
In this way, selection of channels and modulation schemes that do not cause interference can be achieved.
In an alternative embodiment, the above evaluating the influence of the wireless signal existing in the environment on the communication quality of each channel in each modulation mode supported by the network manager includes:
the network manager traverses each supported channel;
in each traversed channel, the network manager traverses each supported modulation mode;
the impact of the radio signals present in the environment on the communication quality of each supported channel and supported modulation scheme combination is evaluated.
For the invention, through the traversal, the combination forms of all channels and modulation modes supported by the network manager are comprehensively evaluated, and the screened combinations of all channels and modulation modes passing the evaluation can realize the normal communication between the network manager and the wireless communication equipment on the premise of no change of background interference.
In the embodiment of the present invention, the communication quality evaluation refers to evaluating whether channels and modulation schemes meet the communication quality requirement, and all the evaluated combinations of the multiple groups of channels and modulation schemes are combinations of channels and modulation schemes that meet the communication quality requirement.
In the embodiment of the invention, the network manager adopts a software defined radio mode to obtain the supported modulation modes and channels. The software defined radio mode can support various frequency bands and various modulation modes. For example, the software defined radio may support modulation schemes such as (G) FSK, DSSS-OQPSK, OOK, ASK, BPSK, etc., and may support modulation schemes such as 2.4G band (2400-2483.5 MHz), 915M band (902-930 MHz), 868M band (863-876 MHz), 490M band (470-510 MHz), 433M band (426-445 MHz), 315M band (195-358 MHz), 169M band (169-170 MHz), etc.
The method for avoiding wireless communication interference of the embodiment of the invention mainly comprises the generation of switching sequence rules among a plurality of groups of channel and modulation mode combinations, the execution flow of a network manager side and the execution flow of a wireless communication device side. The following describes the execution flows of the three units, respectively, to further develop the method for avoiding wireless communication interference according to the embodiment of the present invention.
In the embodiment of the present invention, a specific Wireless Communication Quality Evaluation Algorithm (WCQEA) is adopted, and a main flow thereof is as shown in fig. 2, and includes the following steps.
Step a1, setting an initial channel and an initial modulation mode, and then entering step a 2.
In this step, the initial channel and the initial modulation mode are any one of all modulation modes and channels supported by the network manager. The initial channel and the initial modulation mode may be selected randomly from all channels and modulation modes supported by the network manager, or a first channel and a first modulation mode may be selected as the initial channel and the initial modulation mode in sequence from all channel and modulation mode lists supported by the network manager, or any other channel and modulation mode selection method may be used to select the initial channel and the initial modulation mode.
Step a2, judging whether the environment has the wireless signal of the set modulation mode under the current set channel, if yes, entering step a3, otherwise, entering step a 5.
Step a3, evaluating whether the interference of the wireless signal in the environment to the current set channel and modulation mode exceeds the set threshold, if yes, entering step a4, otherwise entering step a 5.
The threshold is set to, for example, -80 to-90 dBm (decibel-milliwatt).
Step a4, marking the combination of the currently set channel and modulation mode as the combination of unavailable channel and modulation mode, and then entering step a 6.
Step a5, marking the currently set channel and modulation mode combination as the available channel and modulation mode combination, and then entering step a 6.
The combination of the available channel and the modulation method is one of the combinations of the multiple groups of channels and modulation methods in the above description.
And a step a6, judging whether the currently set channel is the last channel, if so, entering a step a7, and otherwise, entering a step a 8.
The last channel refers to the last channel that is not set among all channels supported by the network manager in the current modulation mode.
Step a7, judging whether the currently set modulation mode is the last modulation mode, if so, entering step a10, otherwise, entering step a 9.
The last modulation mode refers to the last modulation mode that is not set among all modulation modes supported by the network manager.
Step a8, the set channel is switched to a new channel, and then the process proceeds to step a 2.
In this step, the new channel refers to the other unset channels among all channels supported by the network manager in the current modulation mode.
Step a9, the set modulation scheme is switched to a new modulation scheme, and the process then proceeds to step a 2.
In this step, the new modulation scheme refers to an unset modulation scheme among all modulation schemes supported by the network manager.
Step a10, all combinations of channels and modulation schemes marked as available, and the switching sequence rule are stored in the signal selection rule list.
The switching sequence rule may be set as required, for example: the switching order may be set according to the order of the combinations marked as available channels and modulation modes, the combination marked as available channels and modulation modes for the first use is set as the channel and modulation mode combination for the first use, the combination marked as available channels and modulation modes for the second use is set as the channel and modulation mode combination for the second use, and so on; the switching order may be set according to the interference level of the radio signal in the environment with respect to the combination of the available channel and the modulation scheme, the combination of the available channel and the modulation scheme that is minimally interfered by the radio signal in the environment may be set as the channel and modulation scheme to be set for the first use, the combination of the available channel and the modulation scheme that is minimally interfered by the radio signal in the environment may be set as the channel and modulation scheme to be set for the second use, and so on.
As shown in fig. 3, the workflow on the network manager side mainly includes the following steps.
Step b1, executing wireless communication instruction evaluation, generating a signal selection rule list, and then entering step b 2.
The specific implementation of this step is shown in fig. 2 and described above with respect to the wireless communication instruction evaluation algorithm employed in the embodiment of the present invention.
Step b2, selecting and configuring the channel and modulation mode for wireless communication with the wireless communication device from the signal selection rule list, and then entering step b 3.
In this step, a channel and modulation scheme combination is selected from the signal selection rule list according to a switching order rule in the signal selection rule list, and a channel and a modulation scheme for wireless communication with the wireless communication device are configured.
Step b3, broadcasting the network state regularly, and then entering step b 4.
And b4, judging whether a wireless communication device requests access, if so, entering the step b5, otherwise, returning to the step b 3.
Step b5, establishing connection with the wireless communication device, sending a signal selection rule list to the wireless communication device, and then entering step b 6.
Step b6, interacting with the wireless communication device in the current configured channel and modulation mode, and executing step b 7.
And b7, judging whether the communication with the wireless communication device is interfered, if so, entering the step b8, otherwise, continuing to execute the step b 6.
In this step, whether or not interference is received may be determined by a threshold setting method, and when the interference received in the communication with the wireless communication apparatus reaches the set threshold, the process proceeds to step b 8. The threshold may be set according to the influence of the wireless signal on the communication between the network manager and the wireless communication device in the actual environment, for example, the threshold may be set to-80 dBm to-90 dBm.
Step b8, selecting a new channel and modulation mode combination from the signal selection rule list according to the switching sequence rule in the signal selection rule list, setting the combination as a new channel and modulation mode, and then entering step b 9.
Step b9, wait for the wireless communication device to reconnect, and execute step b 10.
And b10, judging whether the connection of the wireless communication equipment is overtime, if so, returning to the step b8, otherwise, returning to the step b 6.
As shown in fig. 4, the work flow on the wireless communication device side mainly includes the following steps.
Step c1, perform a scan of available connections with the network manager, and perform step c 2.
And c2, judging whether an available connection with the network manager exists, if so, entering the step c3, otherwise, returning to the step c 1.
Step c3, establishing connection with the network manager, receiving and saving the signal selection rule list from the network manager, and then entering step c 4.
And c4, interacting with the network manager in the current configured channel and modulation mode, and executing the step c 5.
And c5, judging whether the communication with the network manager is interfered, if so, entering the step c6, otherwise, continuing to execute the step c 4.
In this step, whether or not interference is caused may be determined by setting a threshold value, which is the same as the threshold value in step b 7.
Step c6, selecting a new channel and modulation mode combination from the signal selection rule list according to the switching sequence rule in the signal selection rule list, setting the combination as a new channel and modulation mode, and then entering step c 7.
Step c7, scanning the available connection with the network manager under the new channel and modulation mode and trying to reconnect with the network manager, and executing step c 8.
And c8, judging whether the scanning reconnection is overtime, if so, returning to the step c6, otherwise, returning to the step c 4.
An embodiment of the present invention further provides a wireless communication system, as shown in fig. 5, the wireless communication system includes a network manager 1 and a wireless communication device 2. The network manager 1 is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager, determine, according to an evaluation result, an alternative channel performing wireless communication with the wireless communication device 2 and an available modulation mode corresponding to each alternative channel, respectively combine each alternative channel and each available modulation mode corresponding to each alternative channel to obtain a plurality of groups of combinations of channels and modulation modes, and generate a switching sequence rule between the plurality of groups of combinations of channels and modulation modes; selecting a group of channel and modulation scheme combinations from the plurality of groups of channel and modulation scheme combinations, and setting the channel and modulation scheme combinations as channels and modulation schemes used for wireless communication with the wireless communication device 2; when the wireless communication equipment is accessed, the combination of the multiple groups of channels and the modulation modes and the switching sequence rule are issued to the wireless communication equipment 2; in the process of wireless communication with the wireless communication device 2, when it is detected that wireless communication with the wireless communication device 2 is interfered, a combination of a channel and a modulation scheme for wireless communication with the wireless communication device 2 is switched according to a switching order rule, and the switched combination of the channel and the modulation scheme is set as a new channel and a new modulation scheme for wireless communication with the wireless communication device 2. A wireless communication device 2 for performing wireless communication with the network manager 1; when accessing the network manager 1, receiving and storing a plurality of groups of channel and modulation mode combinations and switching sequence rules; in the process of wireless communication with the network manager 1, when it is detected that wireless communication with the network manager 1 is interfered, a combination of a channel and a modulation scheme for wireless communication with the network manager 1 is switched according to a switching order rule, and the switched combination of the channel and the modulation scheme is set as a new channel and a new modulation scheme for wireless communication with the network manager 1.
In an alternative embodiment, the network manager 1 comprises a first main processor 11 and a first radio frequency transceiver 12. The first main processor 11 is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager 1, determine, according to an evaluation result, an alternative channel for performing wireless communication between the network manager 1 and the wireless communication device 2 and an available modulation mode corresponding to each alternative channel, combine each alternative channel and each available modulation mode corresponding to each alternative channel respectively, obtain a combination of multiple groups of channels and modulation modes, and generate a switching sequence rule between the combinations of multiple groups of channels and modulation modes. A first radio frequency transceiver 12, configured to select a group of combinations of channels and modulation schemes from the groups of combinations of channels and modulation schemes, and set the selected combination as a channel and a modulation scheme used for wireless communication with the wireless communication device 2; when the wireless communication equipment 2 is accessed, the combination of a plurality of groups of channels and modulation modes and the switching sequence rule are issued to the wireless communication equipment 2; when it is detected that the wireless communication with the wireless communication device 2 is interfered, the combination of the channel and the modulation scheme for the wireless communication with the wireless communication device 2 is switched according to the switching sequence rule, and the switched combination of the channel and the modulation scheme is set as a new channel and a new modulation scheme for the wireless communication with the wireless communication device 2.
In an alternative embodiment, the first rf transceiver 12 is a programmable rf transceiver, and the first rf transceiver 12 obtains the modulation scheme and the channel supported by the network manager in a software defined radio scheme.
In an alternative embodiment, the first main processor 11 and the first radio frequency transceiver 12 are integrated in the same chip.
In an alternative embodiment, the sets of channel and modulation scheme combinations and switching order rules are stored in a signal selection rule list, which is stored in the first main processor 11. When the wireless communication device 2 is accessed, the first radio frequency transceiver 12 issues the signal selection rule list stored in the first main processor 11 to the wireless communication device 2, and the wireless communication device 2 stores the signal selection rule list locally.
In an alternative embodiment, the network manager 1 is, for example, a gateway device, wherein the first main processor 11 may be further configured to perform operations such as transceiving control, logic and protocol processing of information. In addition, the gateway device further comprises a power management and peripheral module. The power management module is mainly used for supplying power to each power utilization module (such as the first main processor 11, the first radio frequency transceiver 12, the peripheral module and the like) in the gateway device, the peripheral module can be used for carrying out data communication (such as wired data communication or wireless data communication), signal acquisition or information interaction and the like with the peripheral device, and the peripheral module can comprise two types of peripherals including a digital information part and an analog information part so as to realize the processing of two types of information, namely digital information and analog information.
In an alternative embodiment, the wireless communication device 2 further comprises a second main processor 21 and a second radio frequency transceiver 12. The wireless communication device 2 performs wireless communication with the network manager 1 through the second radio frequency transceiver 12, and the second radio frequency transceiver 12 may be a programmable radio frequency transceiver or a non-programmable radio frequency transceiver. The second main processor 21 and the second rf transceiver 12 perform data transceiving with each other, when the wireless communication device 2 accesses the network manager 1, the second rf transceiver 12 receives multiple sets of channel and modulation scheme combinations and switching sequence rules (signal selection rule list) from the network manager 1 side and forwards the multiple sets of channel and modulation scheme combinations and switching sequence rules (signal selection rule list) to the second main processor 21, and the second main processor 21 stores the multiple sets of channel and modulation scheme combinations and switching sequence rules (signal selection rule list).
During the wireless communication with the network manager 1, the wireless communication device 2 side may detect whether the wireless communication with the network manager 1 is interfered by the second radio frequency transceiver 12 and/or the second main processor 21. When the wireless communication device 2 side detects that the wireless communication with the network manager 1 is interfered, the second rf transceiver 12 switches the combination of the channel and the modulation scheme for wireless communication with the network manager 1 according to the plurality of sets of combinations of the channel and the modulation scheme and the switching sequence rule (signal selection rule list) stored in the second main processor 21, and sets the switched combination of the channel and the modulation scheme as a new combination of the channel and the modulation scheme for wireless communication with the network manager 1.
In the method and the wireless communication system for avoiding wireless communication interference according to the embodiments of the present invention, before wireless communication is performed between a network manager and a wireless communication device, communication quality evaluation is performed on each channel for interference existing in an environment to obtain multiple groups of channel and modulation scheme combinations and a switching sequence rule between the multiple groups of channel and modulation scheme combinations, which can ensure normal communication between the network manager and the wireless communication device when interference exists in the environment, and further, the network manager and the wireless communication device both store the same multiple groups of channel and modulation scheme combinations and switching sequence rule by issuing, so that in a subsequent communication process between the network manager and the wireless communication device, if new interference occurs in the environment, interference occurs even in communication between the network manager and the wireless communication device under current signal and modulation scheme configurations And if the channel and the modulation mode are configured in the same channel and modulation mode combination, the network manager and the wireless communication equipment can switch and configure the channel and the modulation mode combination in the multiple groups of channel and modulation mode combinations according to the same switching sequence rule, so that the network manager and the wireless communication equipment can be switched to the same channel and modulation mode combination and configuration, the subsequent continuous communication of the network manager and the wireless communication equipment under the new channel and modulation mode configuration is ensured, and the stability of the wireless communication between the network manager and the wireless communication equipment under the complex electromagnetic environment is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of avoiding wireless communication interference, comprising:
the method comprises the steps that a network manager carries out communication quality evaluation on each channel under each modulation mode supported by the network manager, determines alternative channels for carrying out wireless communication between the network manager and wireless communication equipment and available modulation modes corresponding to the alternative channels according to evaluation results, combines each alternative channel and each available modulation mode corresponding to the alternative channel respectively to obtain multiple groups of channel and modulation mode combinations, and generates a switching sequence rule between the multiple groups of channel and modulation mode combinations;
the network manager selects a group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations, and sets the channel and modulation mode used for wireless communication between the network manager and the wireless communication equipment;
when the wireless communication equipment is accessed, the network manager sends the combination of the multiple groups of channels and modulation modes and the switching sequence rule to the wireless communication equipment;
when the network manager detects that the wireless communication with the wireless communication equipment is interfered, the network manager switches the channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and sets the switched channel and modulation mode combination as a new channel and modulation mode for wireless communication with the wireless communication equipment;
when the wireless communication device detects that the wireless communication with the network manager is interfered, the wireless communication device switches the channel and modulation mode combination which carries out wireless communication with the network manager according to the switching sequence rule, and sets the switched channel and modulation mode combination as a new channel and modulation mode which are used for carrying out wireless communication with the network manager.
2. The method of claim 1, wherein:
the network manager stores the multiple groups of channel and modulation mode combinations and the switching sequence rule in a signal selection rule list;
when the wireless communication equipment is accessed, the network manager issues the signal selection rule list to the wireless communication equipment, and the wireless communication equipment stores the signal selection rule list locally.
3. The method of claim 1, wherein the evaluating, by the network manager, the communication quality of each channel in each modulation scheme supported by the network manager comprises:
the influence of the wireless signals existing in the environment on the communication quality of each channel in each modulation mode supported by the network manager is evaluated.
4. The method of claim 3, wherein the evaluating the effect of the wireless signals present in the environment on the communication quality of each channel for each modulation scheme supported by the network manager comprises:
the network manager traverses each supported channel;
in each of the traversed supported channels, the network manager traverses each of the supported modulation modes;
the impact of the radio signals present in the environment on the communication quality of each supported channel and supported modulation scheme combination is evaluated.
5. The method of claim 1, wherein:
the multi-group channel and modulation mode combination is the combination of the channel and the modulation mode which meets the communication quality requirement.
6. The method of claim 1, wherein:
the network manager adopts a software defined radio mode to obtain the supported modulation modes and channels.
7. A wireless communication system, characterized by:
comprises a network manager and a wireless communication device; wherein,
the network manager is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager, determine, according to an evaluation result, an alternative channel performing wireless communication with the wireless communication device and an available modulation mode corresponding to each alternative channel, combine each alternative channel and each available modulation mode corresponding to the alternative channel, obtain a plurality of groups of combinations of channels and modulation modes, and generate a switching sequence rule between the groups of combinations of channels and modulation modes; selecting one group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations, and setting the channel and modulation mode combination as a channel and a modulation mode used for wireless communication with the wireless communication equipment; when the wireless communication equipment is accessed, the multi-group channel and modulation mode combination and the switching sequence rule are issued to the wireless communication equipment; when detecting that the wireless communication with the wireless communication equipment is interfered, switching a channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for wireless communication with the wireless communication equipment;
the wireless communication device is used for carrying out wireless communication with the network manager; when accessing the network manager, receiving and storing the multiple groups of channel and modulation mode combinations and the switching sequence rule; and when the interference on the wireless communication with the network manager is detected, switching the channel and modulation mode combination for the wireless communication with the network manager according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for the wireless communication with the network manager.
8. The wireless communication system of claim 7, wherein the network manager comprises:
a first main processor and a first radio frequency transceiver; wherein,
the first main processor is configured to perform communication quality evaluation on each channel in each modulation mode supported by the network manager, determine, according to an evaluation result, an alternative channel for performing wireless communication between the network manager and the wireless communication device and an available modulation mode corresponding to each alternative channel, combine each alternative channel and each available modulation mode corresponding to the alternative channel respectively to obtain a plurality of groups of combinations of channels and modulation modes, and generate a switching sequence rule between the plurality of groups of combinations of channels and modulation modes;
the first radio frequency transceiver is used for selecting one group of channel and modulation mode combination from the multiple groups of channel and modulation mode combinations and setting the channel and modulation mode combination as a channel and a modulation mode used for wireless communication with the wireless communication equipment; when the wireless communication equipment is accessed, the multi-group channel and modulation mode combination and the switching sequence rule are issued to the wireless communication equipment; and when detecting that the wireless communication with the wireless communication equipment is interfered, switching the channel and modulation mode combination for wireless communication with the wireless communication equipment according to the switching sequence rule, and setting the switched channel and modulation mode combination as a new channel and modulation mode used for wireless communication with the wireless communication equipment.
9. The wireless communication system of claim 8, wherein:
the first radio frequency transceiver is a programmable radio frequency transceiver, and the first radio frequency transceiver acquires the modulation mode and the channel supported by the network manager in a software defined radio mode.
10. The wireless communication system of claim 8, wherein:
the multi-group channel and modulation mode combination and the switching sequence rule are stored in a signal selection rule list, and the signal selection rule list is stored in the first main processor;
when the wireless communication device is accessed, the first radio frequency transceiver sends the signal selection rule list stored in the first main processor to the wireless communication device, and the wireless communication device stores the signal selection rule list locally.
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