CN115884300A - Wireless communication method, device, communication equipment and readable storage medium - Google Patents
Wireless communication method, device, communication equipment and readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a wireless communication method, a wireless communication device, communication equipment and a readable storage medium, and relates to the technical field of communication. The method is applied to at least 2 service types, wherein the at least 2 service types comprise a first service type and a second service type, and the method comprises the following steps: selecting a channel from a first available channel set for communication of a first service type in a current channel updating period, wherein the first available channel set comprises a plurality of channels; selecting a channel from a second available channel set for communication of a second service type in a current channel updating period, wherein the second available channel set comprises a plurality of channels; and updating the second available channel set in the current channel updating period, wherein the updated second available channel set is used in the next channel updating period. The invention solves the problem that the communication which ensures real-time performance through limited retransmission can not ensure the audio quality in the prior art.
Description
The application date of the invention is as follows: the patent application number is 202011620927.7 on 31/12/2020, which is a divisional application of the Chinese patent application named as "wireless communication method, device, communication equipment and readable storage medium".
Technical Field
Embodiments of the present invention relate to the field of communications technologies, and in particular, to a wireless communication method and apparatus, a communication device, and a readable storage medium.
Background
The wireless audio technology brings free communication or music enjoyment to people without limitation, and is widely popular with people. Especially, bluetooth Low Energy (BLE) Audio (Audio) technology based on a Connected Isochronous Stream (CIS) protocol and a Broadcast Isochronous Stream (BIS) protocol will bring wireless Audio service with lower power consumption, lower cost and higher quality to people. However, the CIS and BIS protocols use a limited retransmission method to ensure real-time performance or low-delay performance of BLE Audio, and in a severe interference and fading environment, it is difficult to ensure communication performance of BLE Audio by limited retransmission and an existing Adaptive Frequency Hopping (AFH) technology.
The existing AFH generally evaluates the quality of a channel through performance during channel use, where a channel with a low error rate is a high-quality channel and a channel with a low error rate is a low-quality channel. AFH selects a high quality channel as an available channel and uses the available channel to communicate or transmit data, rather than using a low quality channel. However, the wireless channel varies with time, and a low-quality channel may become a high-quality channel and a high-quality channel may become a low-quality channel. Therefore, the quality of all channels needs to be re-evaluated after a certain period. In order to evaluate the channel quality, the originally evaluated low-quality channels are periodically reused for communication, and it is determined again whether these channels are high-quality channels during the communication. The problem is that if the channel evaluated as low quality in the previous period is still a low quality channel in the current period, more data errors or losses will be caused during the channel quality evaluation. Especially, for communications such as BLE Audio, which are guaranteed to be real-time through limited retransmission, audio data errors or loss due to reuse of a low-quality channel are inevitable, and thus Audio quality cannot be guaranteed.
Disclosure of Invention
Embodiments of the present invention provide a wireless communication method, an apparatus, a communication device, and a readable storage medium, which solve the problem in the prior art that the real-time communication cannot guarantee the audio quality by limited retransmission.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a wireless communication method, which is applied to at least 2 service types, where the at least 2 service types include a first service type and a second service type, and the method includes:
selecting a channel from a first available channel set for communication of a first service type in a current channel updating period, wherein the first available channel set comprises a plurality of channels;
selecting a channel from a second available channel set for communication of a second service type in a current channel updating period, wherein the second available channel set comprises a plurality of channels;
updating the second set of available channels in a current channel update period, comprising: evaluating the communication quality of channels in an alternative channel set in a current channel update period to obtain a high-quality channel and a low-quality channel of a second-class link, and updating the high-quality channel of the second-class link evaluated in the current channel update period to the updated second available channel set, wherein the alternative channel set is one of the first available channel set, the second available channel set, the first available channel set, the second available channel set and a third channel set including all channels, and the updated second available channel set is used in a next channel update period.
Optionally, the selecting a channel from the first set of available channels for the communication of the first service type includes:
selecting a channel from a first available channel set based on an adaptive frequency hopping method to perform communication of a first service type;
said selecting a channel from a second set of available channels for communication of a second traffic type comprises:
selecting a channel from the second set of available channels based on an adaptive frequency hopping method for communication of the second traffic type;
the first available channel set is established based on a first preset rule, and the second available channel set is established based on a second preset rule.
Optionally, the first set of available channels and the second set of available channels share some or all of the channels; wherein the shared part or all of the channels comprise time division multiplexing part or all of the channels.
Optionally, the wireless communication method is a bluetooth low energy wireless communication method;
the first service type is asynchronous connection flow;
the second service type is a connection isochronous stream or a broadcast isochronous stream.
Optionally, the updating the second available channel set in the current channel update period includes:
evaluating the communication quality of the channels in the alternative channel set in the current channel updating period; wherein the alternative channel set is one of the first available channel set, the second available channel set, and a third channel set including all channels;
selecting channels in the alternative channel set with the communication quality value lower than the second threshold value as target channels to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
Optionally, after the selecting a channel from the first set of available channels for the communication of the first service type, the method further includes:
updating the first set of available channels; the updated first available channel set is used for a next channel update period.
Optionally, a channel with a communication quality value lower than a first threshold is recorded as an available channel of the first service type; the channels with the communication quality values higher than the first threshold value are marked as unavailable channels of the first service type; the unavailable channel of the first service type is changed into the available channel of the first service type after a channel recovery period;
when the first available channel set is an available channel of the first service type, the updating the second available channel set in the current channel update period includes:
selecting channels in the first available channel set with the communication quality values lower than the second threshold value as target channels to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
Optionally, the channel recovery period is a positive integer multiple of the channel update period.
Optionally, the communication quality value is a communication error probability of a channel, and the first threshold is a communication error probability threshold of a first service type;
the second threshold is a communication error probability threshold of a second service type;
the second threshold is less than the first threshold.
In a second aspect, an embodiment of the present invention further provides a wireless communication apparatus, which is applied to at least 2 service types, where the at least 2 service types include a first service type and a second service type, and include:
a communication module, configured to select a channel from a first available channel set to perform communication of a first service type in a current channel update period, where the first available channel set includes multiple channels; the communication module is further configured to select a channel from a second available channel set for communication of a second service type in a current channel update period, where the second available channel set includes a plurality of channels;
an update module, configured to update the second available channel set in a current channel update period, including: evaluating the communication quality of channels in an alternative channel set in a current channel update period to obtain a high-quality channel and a low-quality channel of a second-class link, and updating the high-quality channel of the second-class link evaluated in the current channel update period to the updated second available channel set, wherein the alternative channel set is one of the first available channel set, the second available channel set, the first available channel set, the second available channel set and a third channel set including all channels, and the updated second available channel set is used in a next channel update period.
In a third aspect, an embodiment of the present invention further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read a program in the memory to implement the steps in the wireless communication method according to any one of the first aspect.
In a fourth aspect, the present invention further provides a readable storage medium for storing a program, where the program is executed by a processor to implement the steps in the wireless communication method according to any one of the first aspect.
In the embodiment of the invention, the service types are divided into at least two types, in the current channel updating period, different service types carry out communication of corresponding service types by selecting corresponding available channel sets, in the current channel updating period, a second available channel set is updated, and the updated second available channel set is used for communication of the second service type in the next channel updating period; the wireless communication transmission is realized by adopting the specific available channel set aiming at the communication link of the specific type, the available channel set is updated along with the channel updating period, the anti-interference and anti-fading performance of the specific communication type is improved, and the communication reliability of the communication link of the specific type is improved.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart illustrating a wireless communication method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
The adaptive frequency hopping technology is a technology which is based on automatic channel quality analysis and combines frequency adaptation and power adaptation control. The method can automatically avoid the interfered frequency hopping points in the frequency hopping communication process, and achieves the purpose of maintaining high-quality communication on the interference-free frequency hopping channel for a long time with the minimum transmitting power and the minimum intercepted probability. Bluetooth adopts AFH to detect and classify interference, avoids interference by editing a frequency hopping algorithm, informs other members in a network of distribution change, and periodically maintains a frequency hopping channel set.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a wireless communication method according to an embodiment of the invention;
the embodiment of the invention provides a wireless communication method, which is applied to at least 2 service types, wherein the at least 2 service types comprise a first service type and a second service type, and the method comprises the following steps:
step 11: selecting a channel from a first available channel set for communication of a first service type in a current channel updating period, wherein the first available channel set comprises a plurality of channels;
step 12: selecting a channel from a second available channel set for communication of a second service type in a current channel updating period, wherein the second available channel set comprises a plurality of channels;
step 13: and updating the second available channel set in the current channel updating period, wherein the updated second available channel set is used in the next channel updating period.
In the embodiment of the invention, the service types are divided into at least two types, in the current channel updating period, different service types carry out communication of corresponding service types by selecting corresponding available channel sets, in the current channel updating period, a second available channel set is updated, and the updated second available channel set is used for communication of the second service type in the next channel updating period; the wireless communication transmission is realized by adopting the specific available channel set aiming at the communication link of the specific type, the available channel set is updated along with the channel updating period, the anti-interference and anti-fading performance of the specific communication type is improved, and the communication reliability of the communication link of the specific type is improved.
In some embodiments of the present invention, optionally, the first available channel set is established based on a first service type self-attribute or an artificial preset rule, and the second available channel set is established based on a second service type self-attribute or an artificial preset rule. The self attribute of the service type can be the specific requirement of the specific service on the channel, and the artificial preset rule can be established based on the channel attribute; the communication quality or the communication error probability is one of the indexes for evaluating the channel property.
In some embodiments of the invention, optionally, the first channel set is associated with an establishment rule of the second channel set. In the current channel updating period, the channel selection of different service types is more refined, the channel utilization rate is higher, and the channel selection is more suitable for the communication requirements of the related multiple service types in the same channel updating period.
In some embodiments of the present invention, optionally, the first channel set may select whether to update according to actual requirements, so that the updated first channel set is used for communication of the first service type in the next channel update period.
In some embodiments of the present invention, optionally, the selecting a channel from the first set of available channels for communication of the first traffic type includes:
selecting a channel from a first available channel set based on an adaptive frequency hopping method to perform communication of a first service type;
said selecting a channel from a second set of available channels for communication of a second traffic type comprises:
selecting a channel from the second set of available channels based on an adaptive frequency hopping method to communicate for a second traffic type;
the first available channel set is established based on a first preset rule, and the second available channel set is established based on a second preset rule.
In the embodiment of the invention, the channels are selected from the corresponding available channels in a centralized manner to carry out communication of the corresponding service types based on the adaptive frequency hopping method, so that the communication of various service types based on the adaptive frequency hopping is realized, the communication reliability is high, and the anti-interference and anti-fading performance is good.
In some embodiments of the present invention, optionally, the first set of available channels and the second set of available channels share some or all of the channels; wherein the shared part or all of the channels comprise time division multiplexing part or all of the channels.
In the embodiment of the invention, the first available channel set and the second available channel set share part or all channels, and the channel sharing mode is time division multiplexing; the communication of the first service type and the communication of the second service type time-division multiplex the available channels in the first available channel set and the second available channel set in one channel updating period, and the channel utilization rate in the communication process is improved.
In some embodiments of the present invention, optionally, the wireless communication method is a bluetooth low energy wireless communication method;
the first service type is asynchronous connection flow;
the second service type is a connection isochronous stream or a broadcast isochronous stream.
In the embodiment of the invention, when the wireless communication method is a Bluetooth low-power wireless communication method, the first service type is asynchronous connection flow, and the second service type is connection isochronous flow or broadcast isochronous flow, the mixed communication reliability of multiple service types is high, and the anti-interference and anti-fading performance is good; the problem that the BLE Audio can not guarantee the Audio quality is effectively solved.
In some embodiments of the present invention, optionally, the updating the second available channel set in the current channel update period includes:
evaluating the communication quality of the channels in the alternative channel set in the current channel updating period; wherein the alternative channel set is one of the first available channel set, the second available channel set, and a third channel set including all channels;
selecting channels in the alternative channel set with the communication quality value lower than the second threshold value as target channels to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
In the embodiment of the invention, the second available channel set is determined according to the communication quality of the channels in the evaluation alternative channel set in the current channel updating period and a second threshold value; the second available channel set obtained by updating according to the scheme not only meets the communication quality requirement of the second service type, but also realizes the selection of the target channel according to the alternative channel set source.
In some embodiments of the present invention, optionally, after the selecting a channel from the first set of available channels for the communication of the first service type, the method further includes:
updating the first set of available channels; the updated first available channel set is used for a next channel update period.
In the embodiment of the invention, the first available channel set is updated after the channel is selected from the first available channel set to carry out communication of the first service type, thereby further meeting the refining requirements of communication of different service types on the channel.
In some embodiments of the present invention, optionally, a channel with a communication quality value lower than a first threshold is marked as an available channel of the first traffic type; the channels with the communication quality values higher than the first threshold value are marked as unavailable channels of the first service type; the unavailable channel of the first service type becomes the available channel of the first service type after a channel recovery period;
when the first available channel set is an available channel of the first service type, the updating the second available channel set in the current channel update period includes:
selecting channels in the first available channel set with the communication quality values lower than the second threshold value as target channels to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
In the embodiment of the invention, the second available channel set is determined according to the communication quality of the available channel of the first service type and a second threshold; the second available channel set obtained by updating according to the scheme effectively realizes the updating of the second available channel set according to the relationship between the first service type and the second service type.
In some embodiments of the present invention, optionally, the channel recovery period is a positive integer multiple of the channel update period.
In the embodiment of the invention, when the channel recovery period is positive integer times of the channel updating period, the unavailable channel meeting the channel recovery period can be changed into the available channel again along with the change of the channel updating period to participate in the channel quality evaluation.
In some embodiments of the present invention, optionally, the communication quality value is a communication error probability of a channel, and the first threshold is a communication error probability threshold of a first service type;
the second threshold is a communication error probability threshold of a second service type;
the second threshold is less than the first threshold.
In the embodiment of the invention, the communication links are divided into a plurality of types, different types of communication links have different communication error probability thresholds, and the communication equipment carries out wireless communication according to the different communication error probability thresholds; calculating the communication error probability of a channel in the current channel updating period, setting a communication error probability threshold value aiming at a communication link of a specific type, and comparing the channel communication error probability with the communication error probability threshold value of the communication link of the specific type to obtain an available channel of the communication link of the specific type, wherein the available channel is used for signal transmission of the communication link of the specific type in the next channel updating period; the method for updating the specific available channel set and the available channel set aiming at the specific type of communication link is realized, and the anti-interference and anti-fading performance of the specific type of communication link is improved, so that the communication reliability of the specific type of communication link is improved.
In the embodiment of the invention, when the communication error probability of a channel is selected as a communication quality value to measure the communication quality of the channel, a first threshold is embodied as a communication error probability threshold of a first service type; the second threshold is embodied as a communication error probability threshold of the second service type; the second threshold is less than the first threshold when the second set of available channels is updated based on the first set of available channels.
In some embodiments of the present invention, optionally, when the first service type is an asynchronous connection flow, a first type link (that is, an ACL link) is established; when the second service type is connection isochronous stream or broadcast isochronous stream, a second type link (namely BIS/CIS link, hereinafter referred to as CIS link) is established, the connection interval using the ACL link is 40ms, the channel update period is 0.8s, and the number of Bluetooth low-power-consumption data channels is 37; CIS link, defining high quality channel with channel error probability less than 10% and low channel quality with error probability greater than 10%. When the Bluetooth Low Energy (BLE) master-slave equipment transmits audio signals, an ACL link can be established first, and then a CIS link can be established. Two specific application examples are described below based on the above parameters.
The first application example: the ACL link selects all channels to communicate, namely the first available channel set is all channels; in the previous channel updating period for establishing the CIS link, if 20 channels are evaluated as the high-quality channels of the CIS link, the 20 high-quality channels form a second available channel set, and 17 channels are evaluated as the low-channel quality of the CIS link, the second type of link, namely the CIS link, uses 20 high-quality channels to transmit bluetooth low-power audio data packets in the current channel updating period. And calculating the communication error probability of all channels in the current channel updating period, and estimating that the CIS link and the ACL link have 23 high-quality channels in total and 14 channels have low-channel quality according to the total communication result of the ACL and the CIS link in the current channel updating period. Then in the next channel update period, the CIS link uses the 23 high quality channels evaluated by the current channel update period and the 23 high quality channels are updated to a new second set of available channels. In this embodiment, the second set of available channels (all channels having a communication quality value below the second threshold) is selected from the first set of available channels (all channels).
The second application example: firstly, obtaining a high-quality channel of an ACL link by adopting a traditional AFH channel evaluation and selection method: defining a channel error probability of less than 20% for high quality channels of the ACL link and an error probability of greater than 20% for low channel quality of the ACL link. The ACL link initially uses all 37 channels for communication, and then selects a high quality channel of the ACL link as an available channel based on the channel communication quality in each channel update period. If the channel recovery period M =10 channel update periods, the low-quality channel becomes an available channel again after 1 channel recovery period, and participates in channel estimation, that is, the first available channel set is an available channel of the ACL link. The second type of link, the CIS link, defines a high quality channel with a channel error probability of less than 10% and a low channel quality with an error probability of more than 10%. In the previous channel update period for establishing the CIS link, if 25 channels are evaluated as high-quality channels of the ACL link, 6 channels are evaluated as low-quality channels of the ACL link, and there are 3 low-quality channels in the previous M =10 periods that need to be reused, the ACL link may use 28 channels in the current channel update period, and the other 9 channels are not used, that is, the 28 channels constitute the first available channel set. If 20 channels are evaluated as the high-quality channels of the CIS link, 11 channels are evaluated as the low-channel quality of the CIS link, and 6 channels are unused by the ACL link in the previous channel updating period for establishing the CIS link, the second type of link, namely the CIS link, uses 20 high-quality channels to transmit BLE Audio data packets in the current channel updating period, does not use other 17 channels, namely the 20 high-quality channels form a second available channel set. And calculating the communication error probability of the available channels of all ACL links in the current channel updating period, and if the CIS link has 23 high-quality channels and 14 low-channel quality according to the total communication result of the ACL and CIS links in the current period. Then in the next cycle the CIS link uses the 23 high quality channels evaluated in the current cycle and the 23 high quality channels are updated to a new second set of available channels. It can be seen that the quality criteria of the available channels of the communication link of the second traffic type (for example, setting the CIS link channel error probability to be lower than 10%) may be different and higher than the quality criteria of the available channels of the communication link of the first traffic type (for example, setting the ACL link channel error probability to be lower than 20%), so that the communication of the communication link of the second traffic type is more reliable. In this embodiment, the second set of available channels (the first set of available channels having a communication quality value below a second threshold) is selected from the first set of available channels.
In this way, the channels in the second available channel set used for the CIS link in the two application examples are high-quality channels evaluated in the last channel update period, so that the communication quality of the CIS link can be improved, and particularly for the communication which ensures real-time performance through limited retransmission, audio data errors or losses caused by reusing low-quality channels are avoided, thereby ensuring the audio quality.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a wireless communication device 20 according to an embodiment of the present invention;
an embodiment of the present invention further provides a wireless communication device 20, which is applied to at least 2 service types, where the at least 2 service types include a first service type and a second service type, and include:
a communication module 21, configured to select a channel from a first available channel set for communication of a first service type in a current channel update period, where the first available channel set includes a plurality of channels;
the communication module 21 is further configured to select a channel from a second available channel set for communication of a second service type in a current channel update period, where the second available channel set includes a plurality of channels;
an updating module 22, configured to update the second available channel set in the current channel update period, where the updated second available channel set is used in the next channel update period.
In the embodiment of the invention, the wireless communication device divides the service types into at least two types, in the current channel updating period, different service types carry out communication of corresponding service types by selecting corresponding available channel sets, in the current channel updating period, a second available channel set is updated, and the updated second available channel set is used for communication of the second service type in the next channel updating period; the wireless communication transmission is realized by adopting the specific available channel set aiming at the communication link of the specific type, the available channel set is updated along with the channel updating period, the anti-interference and anti-fading performance of the specific communication type is improved, and the communication reliability of the communication link of the specific type is improved.
In some embodiments of the present invention, optionally, the first set of available channels is established based on the self-attribute of the first service type or a preset rule artificially, and the second set of available channels is established based on the self-attribute of the second service type or a preset rule artificially. The self attribute of the service type can be the specific requirement of the specific service on the channel, and a manual preset rule can be established based on the channel attribute; the communication quality or the communication error probability is one of the indexes for evaluating the channel property.
In some embodiments of the invention, optionally, the first channel set is associated with an establishment rule of the second channel set. In the current channel updating period, the channel selection of different service types is more precise, the channel utilization rate is higher, and the channel selection is more suitable for the communication requirements of the associated multiple service types in the same channel updating period.
In some embodiments of the present invention, optionally, the first channel set may select whether to update according to actual requirements, so that the updated first channel set is used for communication of the first service type in the next channel update period.
In some embodiments of the present invention, optionally, the communication module 21 is further configured to select a channel from the first set of available channels based on an adaptive frequency hopping method, and perform communication of the first service type;
the communication module 21 is further configured to select a channel from a second set of available channels based on an adaptive frequency hopping method, and perform communication of a second service type;
the first available channel set is established based on a first preset rule, and the second available channel set is established based on a second preset rule.
In the embodiment of the invention, the channels are selected from the corresponding available channels in a centralized manner to carry out communication of the corresponding service types based on the adaptive frequency hopping method, so that the communication of various service types based on the adaptive frequency hopping is realized, the communication reliability is high, and the anti-interference and anti-fading performance is good.
In some embodiments of the present invention, optionally, the first set of available channels and the second set of available channels share some or all of the channels.
In the embodiment of the invention, the first available channel set and the second available channel set share part or all channels, and the channel sharing mode is time division multiplexing; the communication of the first service type and the communication of the second service type multiplex the available channels in the first available channel set and the second available channel set in a time division mode in one channel updating period, and the use rate of the channels in the communication process is improved.
In some embodiments of the present invention, optionally, the wireless communication apparatus is applied to bluetooth low energy wireless communication;
the first service type is asynchronous connection flow;
the second service type is a connection isochronous stream or a broadcast isochronous stream.
In the embodiment of the invention, when the wireless communication device is applied to Bluetooth low-power wireless communication, the first service type is asynchronous connection flow, and the second service type is connection isochronous flow or broadcast isochronous flow, the communication reliability of various service types is high, and the anti-interference and anti-fading performance is good; the problem that the BLE Audio can not guarantee the Audio quality is effectively solved.
In some embodiments of the present invention, optionally, the updating module 22 is further configured to evaluate communication quality of channels in the alternative channel set in the current channel updating period; wherein the alternative channel set is one of the first available channel set, the second available channel set, and a third channel set including all channels;
the updating module 22 is further configured to select a channel in the candidate channel set whose communication quality value is lower than the second threshold as a target channel, so as to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
In the embodiment of the invention, a second available channel set is determined according to the communication quality of the channels in the evaluation alternative channel set and a second threshold value in the current channel updating period; the second available channel set obtained by updating according to the scheme not only meets the communication quality requirement of the second service type, but also realizes the selection of the target channel according to the alternative channel set source.
In some embodiments of the present invention, optionally, the updating module 22 is further configured to update the first set of available channels after selecting channels from the first set of available channels for communication of the first service type; the updated first available channel set is used for a next channel update period.
In the embodiment of the invention, the first available channel set is updated after the channel is selected from the first available channel set to carry out communication of the first service type, thereby further meeting the refining requirements of communication of different service types on the channel.
In some embodiments of the present invention, optionally, a channel with a communication quality value lower than a first threshold is marked as an available channel of the first traffic type; the channels with the communication quality values higher than the first threshold value are marked as unavailable channels of the first service type; the unavailable channel of the first service type is changed into the available channel of the first service type after a channel recovery period;
when the first available channel set is an available channel of the first service type, the updating module 22 is further configured to select a channel in the first available channel set whose communication quality value is lower than a second threshold as a target channel, so as to obtain an updated second available channel set; the updated second set of available channels is comprised of the target channel.
In the embodiment of the invention, the second available channel set is determined according to the communication quality of the available channel of the first service type and a second threshold; the second available channel set obtained by updating according to the scheme effectively realizes the updating of the second available channel set according to the relationship between the first service type and the second service type.
In some embodiments of the present invention, optionally, the channel recovery period is a positive integer multiple of the channel update period.
In the embodiment of the invention, when the channel recovery period is a positive integral multiple of the channel updating period, the unavailable channel meeting the channel recovery period can be changed into the available channel again along with the change of the channel updating period to participate in the channel quality evaluation.
In some embodiments of the present invention, optionally, the communication quality value is a communication error probability of a channel, and the first threshold is a communication error probability threshold of a first service type;
the second threshold is a communication error probability threshold of a second service type;
the second threshold is less than the first threshold.
In the embodiment of the invention, the communication links are divided into a plurality of classes, different types of communication links have different communication error probability threshold values, and the communication equipment carries out wireless communication according to the different communication error probability threshold values; calculating the communication error probability of a channel in the current channel updating period, setting a communication error probability threshold value aiming at a communication link of a specific type, and comparing the channel communication error probability with the communication error probability threshold value of the communication link of the specific type to obtain an available channel of the communication link of the specific type, wherein the available channel is used for signal transmission of the communication link of the specific type in the next channel updating period; the method for updating the specific available channel set and the available channel set aiming at the specific type of communication link is realized, and the anti-interference and anti-fading performance of the specific type of communication link is improved, so that the communication reliability of the specific type of communication link is improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a communication device 30 according to an embodiment of the present invention;
an embodiment of the present invention further provides a communication device 30, including: a transceiver 31, a memory 32, a processor 33, and a program stored on the memory 32 and executable on the processor 33; the processor 33 is configured to read the program in the memory 32 to implement the processes of the embodiment of the wireless communication method as described above.
In the embodiment of the invention, the communication equipment divides the service types into at least two types, in the current channel updating period, different service types carry out communication of corresponding service types by selecting corresponding available channel sets, in the current channel updating period, a second available channel set is updated, and the updated second available channel set is used for communication of the second service type in the next channel updating period; the wireless communication transmission is realized by adopting the specific available channel set aiming at the communication link of the specific type, the available channel set is updated along with the channel updating period, the anti-interference and anti-fading performance of the specific communication type is improved, and the communication reliability of the communication link of the specific type is improved.
An embodiment of the present invention further provides a readable storage medium, which is used for storing a program, where the program, when executed by a processor, implements the processes of the wireless communication method embodiment described above, and can achieve the same technical effects, and details are not repeated herein to avoid repetition. The readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid State Disk (SSD)), etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A wireless communication method applied to at least 2 service types, wherein the at least 2 service types include a first service type and a second service type, the method comprising:
selecting a channel from a first available channel set for communication of a first service type in a current channel updating period, wherein the first available channel set comprises a plurality of channels;
selecting a channel from a second available channel set for communication of a second service type in a current channel updating period, wherein the second available channel set comprises a plurality of channels;
updating the second set of available channels in a current channel update period, comprising: evaluating the communication quality of channels in an alternative channel set in a current channel update period to obtain a high-quality channel and a low-quality channel of a second-class link, and updating the high-quality channel of the second-class link evaluated in the current channel update period to the updated second available channel set, wherein the alternative channel set is one of the first available channel set, the second available channel set, the first available channel set, the second available channel set and a third channel set including all channels, and the updated second available channel set is used in a next channel update period.
2. The method of claim 1, wherein selecting a channel from the first set of available channels for communication of the first traffic type comprises:
selecting a channel from a first available channel set based on an adaptive frequency hopping method to perform communication of a first service type;
said selecting a channel from a second set of available channels for communication of a second traffic type comprises:
selecting a channel from the second set of available channels based on an adaptive frequency hopping method for communication of the second traffic type;
the first available channel set is established based on a first preset rule, and the second available channel set is established based on a second preset rule.
3. The wireless communication method according to claim 1, wherein the first set of available channels and the second set of available channels share some or all of the channels; wherein the shared part or all of the channels comprise time division multiplexing part or all of the channels.
4. The wireless communication method according to claim 1,
the wireless communication method is a Bluetooth low-power wireless communication method;
the first service type is asynchronous connection flow;
the second service type is a connection isochronous stream or a broadcast isochronous stream.
5. The wireless communication method according to claim 1,
and the channels in the alternative channel set with the communication quality value lower than the second threshold are high-quality channels of the second-class link, and the channels in the alternative channel set with the communication quality value higher than the second threshold are low-quality channels of the second-class link.
6. The wireless communication method according to claim 1,
the quality criteria of the available channels of the second traffic type are different and higher than the quality criteria of the available channels of the communication link of the first traffic type,
the first set of available channels includes all channels; or
After selecting a channel from the first set of available channels for communication of the first traffic type, the method further comprises:
updating the first set of available channels; the updated first available channel set is used for a next channel update period.
7. The wireless communication method according to claim 6,
and evaluating the high-quality channel and the low-quality channel of the first type link according to the channel communication quality in each channel updating period, and taking the high-quality channel of the first type link as the updated first available channel set.
8. The wireless communication method according to claim 1,
the channels with the communication quality values lower than a first threshold value are marked as available channels of the first service type; the channels with the communication quality values higher than the first threshold value are marked as unavailable channels of the first service type; and after a channel recovery period, the unavailable channel of the first service type becomes the available channel of the first service type.
9. The wireless communication method according to claim 8, wherein the channel recovery period is a positive integer multiple of the channel update period.
10. The wireless communication method according to claim 8,
the communication quality value is a communication error probability of a channel, and the first threshold is a communication error probability threshold of a first service type;
the second threshold is a communication error probability threshold of a second service type;
the second threshold is less than the first threshold.
11. A wireless communications apparatus that applies to at least 2 traffic types, the at least 2 traffic types including a first traffic type and a second traffic type, comprising:
a communication module, configured to select a channel from a first available channel set to perform communication of a first service type in a current channel update period, where the first available channel set includes multiple channels; the communication module is further configured to select a channel from a second available channel set for communication of a second service type in a current channel update period, where the second available channel set includes a plurality of channels;
an update module, configured to update the second available channel set in a current channel update period, including: evaluating the communication quality of channels in an alternative channel set in a current channel update period to obtain a high-quality channel and a low-quality channel of a second-class link, and updating the high-quality channel of the second-class link evaluated in the current channel update period to the updated second available channel set, wherein the alternative channel set is one of the first available channel set, the second available channel set, the first available channel set, the second available channel set and a third channel set including all channels, and the updated second available channel set is used in a next channel update period.
12. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that the processor, reading the program in the memory, implements the steps in the wireless communication method according to any of claims 1-10.
13. A readable storage medium for storing a program, wherein the program when executed by a processor performs the steps in the wireless communication method according to any one of claims 1-10.
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| US10951261B2 (en) * | 2016-04-29 | 2021-03-16 | Texas Instruments Incorporated | Pseudo channel hopping in mesh networks without time synchronization |
| CN107995133B (en) * | 2016-10-26 | 2019-12-13 | 电信科学技术研究院 | Method and device for generating channel frequency and channel evaluation circuit |
| WO2018188016A1 (en) * | 2017-04-13 | 2018-10-18 | 华为技术有限公司 | Channel estimation method, apparatus and system for frequency-hopping signals |
| EP3435731A1 (en) * | 2017-07-28 | 2019-01-30 | Nokia Solutions and Networks Oy | A system for optimizing quality of experience of a user device of a multi-radio multi-channel wireless network |
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| CN111800163B (en) * | 2019-04-09 | 2022-04-01 | 大唐移动通信设备有限公司 | Adaptive frequency control method, apparatus, device and computer readable storage medium |
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| CN111010207B (en) * | 2019-12-05 | 2020-11-13 | 北京邮电大学 | Frequency hopping method and device based on quantitative correlation |
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