CN111934724B - Wireless communication method for earphone and intelligent device and wireless earphone assembly - Google Patents
Wireless communication method for earphone and intelligent device and wireless earphone assembly Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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Abstract
The present disclosure relates to a wireless communication method of an earphone and a smart device and a wireless earphone assembly. The wireless communication method includes: one earphone of the first earphone and the second earphone is used as a first main earphone to establish a first Bluetooth link with each intelligent device in the first group of intelligent devices respectively, and the first auxiliary earphone intercepts the first Bluetooth link; a second earphone and one earphone in the first earphone are used as a second main earphone to establish a second Bluetooth link with each intelligent device in the second group of intelligent devices respectively, and a second slave earphone monitors the second Bluetooth link; communication with a first group of smart devices is performed by a first headset and a second headset during a first time period of each bluetooth frame, the first headset and the second headset communicate with each other via a wireless link during a second time period of each bluetooth frame, and communication with a second group of smart devices is performed by the second headset and the first headset during a third time period of each bluetooth frame.
Description
Technical Field
The present disclosure relates to the field of headsets, and more particularly, to a wireless communication method between an earphone and a smart device and a wireless earphone assembly.
Background
With the social progress and the improvement of the living standard of people, the earphone becomes an indispensable living article for people. Traditional wired headsets are connected to smart devices (e.g., smartphones, laptops, tablets, etc.) via wires, which, however, can limit the wearer's mobility, especially in sports scenarios. At the same time, the twisting and pulling of the earphone cord and the stethoscope effect all affect the listening experience of the earphone wearer. Although the common Bluetooth headset cancels a wire between the headset and the intelligent device, a wire still exists between the left ear and the right ear. Thus, true wireless stereo headphones come into play.
The existing true wireless earphone (true wireless audio device) can only establish wireless link with one intelligent device and can only transmit audio data with the one intelligent device. However, when the wireless headset needs to receive audio data from a plurality of different smart devices, the existing wireless link can only be disconnected and the wireless link with another smart device can be re-established to receive audio data from another smart device. This undoubtedly increases the waste of communication resources and makes the operation of the user excessively cumbersome; obviously, the existing earphones cannot provide a technical solution to the above-mentioned problems.
Disclosure of Invention
The present disclosure is provided to solve the above-mentioned problems occurring in the prior art.
The scheme for carrying out wireless communication between the earphone and the intelligent device can realize seamless switching of Bluetooth links between the wireless earphone and the intelligent devices (groups) of multiple different types by establishing the Bluetooth links between the wireless earphone and the intelligent devices (groups), audio data are transmitted without establishing the repeated Bluetooth links with the intelligent devices, unnecessary waste of communication resources is avoided, and user experience is improved.
According to a first aspect of the present disclosure, a method of wireless communication of an earset with a number of smart devices is provided. The pair of ear bud headphones comprises a first headphone and a second headphone, the first headphone and the second headphone communicate via a wireless link, and the plurality of smart devices comprises a first set of smart devices and a second set of smart devices. The wireless communication method includes: establishing a first Bluetooth link with each intelligent device in the first group of intelligent devices by using one earphone in the first earphone and the second earphone as a first master earphone respectively, and transmitting related communication parameters of the first Bluetooth link to another earphone serving as a first slave earphone through the wireless link so that the first slave earphone can listen to the first Bluetooth link; establishing a second bluetooth link with each smart device in the second group of smart devices by the second headset and one of the first headsets as a second master headset, respectively, and transmitting related communication parameters of the second bluetooth link to another headset as a second slave headset via the wireless link so that the second slave headset listens to the second bluetooth link; performing, by the first and second headsets, communication with the first set of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of each bluetooth frame, the first and second headsets communicating with each other via the wireless link during a second time period of each bluetooth frame, and performing, by the second and first headsets, communication with the second set of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of each bluetooth frame, wherein the first, second and third time periods are separate from each other.
According to the wireless communication method of the earphone and the intelligent devices, the Bluetooth links between the wireless earphone and the intelligent devices (groups) are established simultaneously, so that seamless switching of the Bluetooth links between the wireless earphone and the intelligent devices is achieved, the Bluetooth links do not need to be repeatedly established with a single intelligent device to transmit audio data, unnecessary waste of communication resources is avoided, and user experience is improved.
According to a second aspect of the present disclosure, a wireless headset assembly is provided. The wireless headset assembly is configured to communicate with a plurality of smart devices, the plurality of smart devices including a first set of smart devices and a second set of smart devices, the wireless headset assembly including a first headset and a second headset; the first and second headsets include first and second bluetooth modules, respectively, each of the first and second bluetooth modules configured to: under the condition that the corresponding earphone is used as a first master earphone, a first Bluetooth link is respectively established with each intelligent device in the first group of intelligent devices, and related communication parameters of the first Bluetooth link are transmitted to another earphone through the wireless link; under the condition that the corresponding earphone is used as a second master earphone, a second Bluetooth link is respectively established with each intelligent device in the second group of intelligent devices, and related communication parameters of the second Bluetooth link are transmitted to another earphone through the wireless link; listening to the first Bluetooth link with the respective headset as a first slave headset; and listen for the second bluetooth link with the respective headset as a second slave headset; and wherein the first and second bluetooth modules are further configured to: performing communication with the first group of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of each bluetooth frame; communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and performing communication with the second group of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of the respective bluetooth frames, wherein the first, second and third time periods are separate from each other.
The earphone can establish each Bluetooth link between the wireless earphone and a plurality of different intelligent devices (groups), and the seamless switching of the Bluetooth links between the wireless earphone and the different intelligent devices can be realized by maintaining each Bluetooth link and allocating corresponding time periods for the communication between the earphone and the first group of intelligent devices, the communication between the earphones and the second group of intelligent devices in each Bluetooth frame, audio data is not required to be transmitted repeatedly by the establishing process of the Bluetooth links with the intelligent devices, unnecessary waste of communication resources is avoided, and user experience is improved.
According to a third aspect of the present disclosure, there is provided a non-transitory computer storage medium disposed in a first earpiece and a second earpiece of a wireless earpiece assembly and storing computer executable instructions that, when executed by a processor, perform a wireless communication method as follows. In case the headset to which the medium corresponds (i.e. the headset in which the medium is provided) is the first master headset, a first bluetooth link is established with each smart device of the first group of smart devices, respectively, and the communication parameters associated with said first bluetooth link are transmitted to the other headset via said wireless link. And under the condition that the corresponding earphone is used as a second master earphone, respectively establishing a second Bluetooth link with each intelligent device in a second group of intelligent devices, and transmitting related communication parameters of the second Bluetooth link to another earphone through the wireless link. Listening to the first Bluetooth link with the respective headset as a first slave headset; and listening to the second bluetooth link if the respective headset is acting as a second slave headset. The wireless communication method further comprises: performing communication with the first group of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of each bluetooth frame; communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and performing communication with the second group of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of the respective bluetooth frames, wherein the first, second and third time periods are separate from each other.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
Fig. 1a shows a flow chart of bluetooth communication between headphones and between them and several smart devices according to an embodiment of the disclosure.
Fig. 1b shows a schematic diagram of a bluetooth link between an earphone to the ear and between it and several smart devices according to an embodiment of the disclosure.
Fig. 2 shows a flow chart of a method of wireless communication of an earset with a number of smart devices according to an embodiment of the present disclosure.
Fig. 3 illustrates a timing diagram of a method of wireless communication of an earset with several smart devices according to an embodiment of the disclosure.
Fig. 4 shows a schematic diagram of a wireless headset assembly according to an embodiment of the disclosure.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. Embodiments of the present disclosure are described in further detail below with reference to the figures and the detailed description, but the present disclosure is not limited thereto. The order in which the various steps described herein are described as examples should not be construed as a limitation if there is no requirement for a context relationship between each other, and one skilled in the art would know that sequential adjustments may be made without destroying the logical relationship between each other, rendering the overall process impractical.
A wireless communication scheme of an earphone to ears and a plurality of smart devices according to an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.
Fig. 1a shows a flow diagram of bluetooth communication between earsets comprising a first earpiece and a second earpiece, and between the first earpiece and the second earpiece via a wireless link, and a plurality of smart devices comprising a first set of smart devices and a second set of smart devices, according to an embodiment of the disclosure. As shown in fig. 1a, one of the first earphone and the second earphone is taken as the current earphone.
In step 101a, it is determined whether the current headset is the first master headset for the bluetooth link of the current headset with the first set of smart devices. The first master earphone is an earphone which establishes a first Bluetooth link with each intelligent device in the first group of intelligent devices. If yes, the current headset establishes a first bluetooth link with each smart device in the first group of smart devices, respectively, in step 102a, the current headset transmits the relevant communication parameters of the first bluetooth link to another headset via the wireless link, in step 103a, and the another headset listens to the first bluetooth link as a first slave headset, in step 104 a. If not, in step 105a, the other earphone is used as the first master earphone, the other earphone establishes a first bluetooth link with each smart device in the first group of smart devices, in step 106a, the other earphone transmits the relevant communication parameters of the first bluetooth link to the current earphone via the wireless link, the current earphone receives the relevant parameters of the first bluetooth link, and in step 107a, the current earphone listens to the first bluetooth link as the first slave earphone.
Similarly and synchronously, in step 101b, it is determined whether the current headset is the second master headset for the bluetooth link of the current headset with the second set of smart devices. The second master earphone is an earphone which establishes a second bluetooth link with each intelligent device in the second group of intelligent devices. If yes, the current headset establishes a second bluetooth link with each smart device of the second set of smart devices, respectively, in step 102b, the current headset transmits the relevant communication parameters of the second bluetooth link to another headset via the wireless link, in step 103b, and the another headset listens to the second bluetooth link as a second slave headset, in step 104 b. If not, in step 105b, the other earphone is used as a second master earphone, the other earphone establishes a second bluetooth link with each smart device in the second group of smart devices, in step 106b, the other earphone transmits the related communication parameters of the second bluetooth link to the current earphone via the wireless link, the current earphone receives the related parameters of the second bluetooth link, and in step 107b, the current earphone listens to the second bluetooth link as a second slave earphone.
In some embodiments, when one of the earpieces establishes a first bluetooth link with a first set of smart devices and the other earpiece listens for the first bluetooth link, and after one of the earpieces establishes a second bluetooth link with a second group of smart devices and the other earpiece listens for the second bluetooth link, during a first time period of each Bluetooth frame, performing communication with a first set of smart devices by the first headset and the second headset via the first Bluetooth link and its listening Bluetooth link, respectively, during a second time period of each bluetooth frame, the first earpiece and the second earpiece communicate with each other via a wireless link, and performing, by the second headset and the first headset, communication with a second set of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of each bluetooth frame, wherein the first time period, the second time period, and the third time period are separate from one another. The timing for communicating the earpieces with the plurality of smart devices will be described in detail below.
Fig. 1b shows a schematic diagram of a bluetooth link between an earphone to the ear and between it and several smart devices according to an embodiment of the disclosure. As shown in fig. 1b, the set of headphones comprises a first headphone 101 and a second headphone 102, the first headphone 101 and the second headphone 102 communicating via a wireless link 105. The plurality of smart devices comprises a first group of smart devices 103 and a second group of smart devices 104; the first group of smart devices 103 includes at least one smart device, and the second group of smart devices 104 also includes at least one smart device. The smart device may be a variety of portable smart terminals including, but not limited to, cell phones, tablets, wearable devices, and the like.
As an example of establishing a bluetooth link between the headphones (as a first master headphone) and between the headphones and the plurality of smart devices shown in fig. 1a, in fig. 1b, the first headphone 101 (as a first master headphone) establishes a first bluetooth link 106 with each smart device in the first group of smart devices 103, respectively, and the first headphone 101 may transmit the relevant communication parameters of the first bluetooth link 106 to the second headphone 102 via the wireless link 105, so that the second headphone 102 (as a first slave headphone) listens to the first bluetooth link 106, i.e. the first listening bluetooth link 108, using the relevant communication parameters. The second earpiece 102 establishes a second bluetooth link 107 with each smart device of the second set of smart devices 104, respectively, and the second earpiece 102 may transmit the relevant communication parameters of the second bluetooth link 107 to the first earpiece 101 via the wireless link 105, so that the first earpiece 101 listens for the second bluetooth link 107, i.e. the second listening bluetooth link 109, using the relevant communication parameters.
In some embodiments, when the related communication parameters are transmitted between the first earphone 101 and the second earphone 102 via the wireless link 105 (e.g., the first earphone 101 transmits the related communication parameters of the first bluetooth link 106 to the second earphone 102 via the wireless link 105, or the second earphone 102 transmits the related communication parameters of the second bluetooth link 107 to the first earphone 101 via the wireless link 105), the related communication parameters may be transmitted to another earphone directly or via a relay device, wherein the relay device may be any one or a combination of a charging box, any one of the first set of smart devices 103 or the second set of smart devices 104, a wired circuit, and the like.
In some embodiments, the relevant communication parameters of the first bluetooth link 106 include, but are not limited to, a bluetooth link address of a smart device in the first group of smart devices 103, encryption parameter information of the bluetooth link, etc., such that the second headset 102 in the listening state does not need to perform pairing and establishment of the bluetooth link, but rather enables reception of audio signals transmitted by smart devices in the first group of smart devices 103 via the first bluetooth link 106 by listening. The relevant communication parameters of the second bluetooth link 107 include, but are not limited to, the bluetooth link address of the smart device in the second group of smart devices 104, the encryption parameter information of the bluetooth link, etc., so that the first headset 101 in the listening state does not need to perform pairing and establishment of the bluetooth link, but enables reception of audio signals transmitted by the smart device in the second group of smart devices 104 via the second bluetooth link 107 by listening.
In some embodiments, the first earpiece 101 and the second earpiece 102 may be interchangeable.
After establishing the bluetooth link, the first group of smart devices 103 may send audio data (e.g., related audio data of the user in a call state) to the first headset 101, and the second headset 102 may also receive the audio data sent by the first group of smart devices 103 via the first listening bluetooth link 108, and in response to the first headset 101 and the second headset 102 receiving the audio data, it may send a transmission response packet, which may be ACK/NACK information, to the first group of smart devices 103. Likewise, the second group of smart devices 104 may also send audio data (e.g., related audio data of the user in a state of listening to a song) to the second headset 102, the first headset 101 may also receive the audio data sent by the second group of smart devices 104 via the second listening bluetooth link 109, and in response to the first headset 101 and the second headset 102 receiving the audio data, it may send a transmission acknowledgement packet, which may be ACK/NACK information, to the second group of smart devices 104.
Fig. 2 shows a flow chart of a method of wireless communication of an earset with a number of smart devices according to an embodiment of the present disclosure. As shown in fig. 2, in step 201, a first bluetooth link 106 is established by the first headset 101 and each smart device in the first group of smart devices 103, and the related communication parameters of the first bluetooth link 106 are transmitted to the second headset 102 via the wireless link 105, so that the second headset 102 listens to the first bluetooth link 106. In step 202, a second bluetooth link 107 is established by the second earpiece 102 with each smart device of the second set of smart devices 104, respectively, and the related communication parameters of the second bluetooth link 107 are transmitted to the first earpiece 101 via the wireless link 105, so that the first earpiece 101 listens for the second bluetooth link 107. In step 203, during a first time period of each bluetooth frame, communication with the first group of smart devices 103 is performed by the first earpiece 101 and the second earpiece 102 via the first bluetooth link 106 and its listening bluetooth link (i.e. the first listening bluetooth link 108), respectively, during a second time period of each bluetooth frame, the first earpiece 101 and the second earpiece 102 communicate with each other via the wireless link 105, and during a third time period of each bluetooth frame, communication with the second group of smart devices 104 is performed by the second earpiece 102 and the first earpiece 101 via the second bluetooth link 107 and its listening bluetooth link (i.e. the second listening bluetooth link 109), respectively.
By the communication configuration according to the embodiments of the present disclosure, bluetooth links between the earphones (the first earphone 101 and the second earphone 102) and the plurality of smart devices (groups) can be maintained together, and a process of establishing the bluetooth links with the smart devices repeatedly is avoided, so that by allocating corresponding time periods for communication between the earphones and the first group of smart devices, communication between the earphones, and communication between the earphones and the second group of smart devices in each bluetooth frame according to the embodiments of the present disclosure, time-sharing communication and seamless switching between the wireless earphones and the bluetooth links of the plurality of different smart devices can be achieved, while saving communication resources, user experience can be improved, and audio data transmission between the earphones and the plurality of smart devices (groups) can be achieved in a more efficient manner. Fig. 3 illustrates a timing diagram of a method of wireless communication of an earset with several smart devices according to an embodiment of the disclosure. In general, wireless communication may be performed in predetermined length periods of time, with transmission and reception of corresponding data occurring during each predetermined period of time. According to the bluetooth protocol, the time of one bluetooth slot is 625 microseconds; when the advanced audio distribution framework protocol (A2 DP) is employed, one bluetooth frame occupies a plurality of time slots; when the hands-free frame protocol (HFP) is employed, one bluetooth frame occupies one slot. In some embodiments, the fixed time interval (one bluetooth frame) for audio data transmission may be set to 12 bluetooth slots (7500 microseconds), i.e., one bluetooth frame of 7500 microseconds is set to receive audio data transmitted by the audio data source. In some embodiments, the audio data is continuous in the conversation state or in the listening state, and therefore 12 bluetooth slots are repeated every 7500 microseconds.
As shown in fig. 3, during a first time period 301 of a bluetooth frame, the first group of smart devices 103 sends first audio data, e.g., audio data in a talk state, to the first earpiece 101, and the second earpiece 102 is in a listening state. The first earpiece 101 receives call related audio data via the first bluetooth link 106 and the second earpiece 102 receives call related audio data via the first listening bluetooth link 108. During the second period 302 of the bluetooth frame, the first headset 101 and the second headset 102 communicate with each other via the wireless link 105, and as described above, may transmit a transmission acknowledgement packet therebetween, which may be ACK/NACK information; or other synchronization information, indication information, etc. During the third time period 303 of the bluetooth frame, the second group of smart devices 104 sends second audio data, for example, audio data in a state of listening to songs, to the second headset 102, and the first headset 101 is in a listening state. The second earpiece 102 receives the listening to song related audio data via the second bluetooth link 107 and the first earpiece 101 receives the listening to song related audio data via the second listening bluetooth link 109. Therefore, communication between the earphone and the intelligent devices (groups) can be achieved, the communication occurs in independent communication time periods, and communication interference is avoided.
In some embodiments, a group of smart devices that establish a bluetooth link with an earset may only be able to determine that it is itself establishing a bluetooth link with the earset and cannot determine whether another group of smart devices is also establishing a bluetooth link with the earset. Therefore, when a certain group of smart devices performs data transmission with the earphone, another group of smart devices remains in a data transmission state without stopping data transmission; or when data transmission is carried out between the earphones, the two groups of intelligent devices are still in a data transmission state. Thus, in some embodiments, during the first time period 301, when the first earpiece 101 and the second earpiece 102 perform communication with the first group of smart devices 103, the second group of smart devices 104 remains transmitting signals (i.e., second audio data) without a response from either the first earpiece 101 or the second earpiece 102, that is, while the second group of smart devices 104 remains transmitting and the first earpiece 101 and the second earpiece 102 do not receive bluetooth frames from the smart devices 104. When the first earpiece 101 and the second earpiece 102 communicate with each other during the second time period 302; both the first set of smart devices 103 and the second set of smart devices 104 keep transmitting signals without a response from the first earpiece 101 or the second earpiece 102, i.e. the first earpiece 101 and the second earpiece 102 do not receive bluetooth frames from the first set of smart devices 103, the second set of smart devices 104. During the third time period 303, when the first earpiece 101 and the second earpiece 102 perform communication with the second group of smart devices 104, the first group of smart devices 103 keeps transmitting signals (i.e., the first audio data) without a response from the first earpiece 101 or the second earpiece 102, that is, when the first group of smart devices 103 keeps transmitting and the first earpiece 101 and the second earpiece 102 do not receive bluetooth frames from the first group of smart devices 103.
In some embodiments, the first time period 301 comprises respective first sub-time periods for communicating with respective devices of the first set of smart devices 103; the second time periods 302 comprise respective second sub-time periods for communication between the earpieces; the third time period 303 comprises respective third sub-time periods for communicating with respective ones of the second set of smart devices 104. In this way, the complete time period is divided into a plurality of sub-time periods to facilitate the transmission of specific or designated data information in the respective communication links.
In some embodiments, the start of the time slot of each of the first sub-periods in the first period 301 is determined by a respective communication device in the first group of smart devices 103; the start of the time slot of each third sub-period in the third period 303 is determined by the corresponding communication device in the second group of smart devices. The intelligent device can determine the time slot starting point of each corresponding sub-time period, but the earphone can not determine, and only after receiving the time slot starting point information determined by the intelligent device, the related communication can be executed. The first group of smart devices 103 can only determine the presence of the first earpiece 101 and is not aware of the presence of the second earpiece 102 and the second group of smart devices 104. Likewise, the second set of smart devices 104 can only determine the presence of the second earpiece 102 and not know the presence of the first earpiece 101 and the first set of smart devices 103. Therefore, the start of the time slot of the corresponding sub-period is typically determined by the smart device that is holding the bluetooth connection with the headset as the master.
In some embodiments, the start of a slot in each second sub-period in the second period 302 is determined by the start of a slot in each first sub-period in the first period 301 or the start of a slot in each third sub-period in the third period 303. That is, the timing of the earpieces may be adjusted as the start of the time slot of the first time period 301 or the third time period 303 is adjusted. When one of the first group of smart devices 103 and the second group of smart devices 104 is in a standby state (indicating that data is continuously transmitted without receiving a response) and the other is in an active state (performing data transmission), the start of the time slot of each second sub-period in the second period 302 follows the start of the time slot corresponding to the smart device in the active state. Therefore, when the starting points of the time slots are not aligned, a period of time without alignment is avoided being wasted; meanwhile, when a group of intelligent devices is in a standby state, the current bluetooth frame overlaps with the bluetooth frame in the second time period 302. Thus, the probability of interference to the front and rear bluetooth frames is greatly reduced, and the interference of the intelligent device in the standby state to the communication between the two earphones in the second time period 302 is reduced.
In some embodiments, the respective communication devices in the first set of smart devices 103 may have different priorities when transmitting the relevant data to the headphones; likewise, the respective communication devices in the second set of smart devices 104 may have different priorities when transmitting the related data to the headphones. Therefore, the communication priority between the headphones and each device in the first set of smart devices 103 may be determined according to the priority of the relevant data to be transmitted; the device with the higher communication priority is then preferentially allocated communication time for the corresponding first sub-period. Likewise, the communication priority of the headphones to each device in the second set of smart devices 104 is determined according to the priority of the relevant data to be transmitted; the device with the higher communication priority is then preferentially allocated communication time for the corresponding third sub-period. In this way, when the earphone is in time-sharing communication with a plurality of intelligent devices, the preferential transmission of specific/designated data (such as call voice) can be realized.
In some embodiments, since audio data is interfered by other factors during transmission, there is a possibility of data loss or reception error, and therefore, the smart device retransmits the audio data in the case that the wireless headset receives no data or wrong data. A maximum number of retransmissions of the audio data within a fixed time interval may be set, and if not correctly received within the set maximum number of retransmissions, the audio data is deemed lost and is not retransmitted. For example, the smart device may actively transmit audio data at a set maximum number of retransmissions, and retransmit the audio data at a fixed time interval regardless of whether it was correctly received by the headset. For another example, the smart device may decide whether to retransmit based on feedback (e.g., sending an ACK/NACK signal) of the acceptance of the audio data by the ear piece. The intelligent device will not retransmit the ACK signal only if it receives the ACK signal from the first earphone 101 and the second earphone 102 at the same time, and will retransmit the ACK signal as long as one earphone does not receive the audio signal correctly.
In some embodiments, the duration of each sub-period of the first time period or the third time period (i.e. each first sub-period or each second sub-period) is determined in dependence of the communication reception quality related parameter of the first earpiece 101 and the second earpiece 102. When the communication reception quality of a certain headset is high, it has a large communication reception quality-related parameter, and then a relatively small duration is allocated for the communication transmission, because the high communication quality can ensure that the transmission of audio data is completed in a small communication time. When the communication reception quality of the other earphone is low, meaning that it has a small communication reception quality related parameter, a relatively large duration should be allocated for the communication transmission, because the low communication quality cannot guarantee that the transmission of the audio data is completed in the specified communication time, which requires more communication time for the retransmission of the audio data. In some embodiments, the communication reception quality-related parameter includes any one of a number of retransmissions and a statistical retransmission rate, which is smoothed over time. For example, if the smoothed statistical retransmission rate is y and the retransmission rate is x, y = a × y + (1-a) ×, where a is between 0 and 1, such as 0.8, 0.9, 0.95, and the like. In some embodiments, a channel estimation table of the channel of each communication link may be maintained as a basis for determining the communication reception quality related parameter.
In some embodiments, the timing of the wireless link 105 (shown in FIG. 1 b) may be adjusted so that the start of frame of the wireless link 105 is aligned with the start of frame of the Bluetooth link performing the communication. Typically, bluetooth connections are frequency hopped and hopped at 1600Hz, and a bluetooth signal sent by a smart device in one time slot will only interfere with communication between the earphones in that time slot. If the frame starting point of the wireless link 105 is not aligned with the frame starting point of the bluetooth link performing communication, the bluetooth signal sent by the intelligent device in one time slot interferes with the communication between the earphones in the front and back time slots, so that the possibility of interference of the communication is increased, and the possibility of collision between the frequency point where the bluetooth signal is sent by the intelligent device and the frequency point of the communication between the earphones (namely, the communication is on the same frequency point) is higher; when the communication of the first bluetooth link and the communication of the second bluetooth link are switched, one transmitting time slot and one receiving time slot are wasted, which is equivalent to wasting two time slots in one bluetooth frame.
In some embodiments, the frequency hopping sequence for the wireless link 105 may be generated based on frequency points other than the frequency points at which the number of smart devices transmit bluetooth frames. For example, when the first earpiece 101 and the second earpiece 102 maintain communication with the first group of smart devices 103 for the first time period 301, the first earpiece 101 knows frequency point f1 where the first group of smart devices 103 transmit audio data; the first earphone 101 and the second earphone 102 may skip the frequency point f1 and select a frequency point other than f1 to transmit data when they transmit data to each other in the second period 302. At this time, f1 may be directly removed from the candidate frequency points and selected directly from other frequency points, or a frequency modulation increment may be added to frequency point f1, so as to avoid frequency point f 1. In some embodiments, a frequency hopping table may be maintained based on the quality of the wireless link 105, the signal quality of the bluetooth link performing the communication at various frequency points; that is, when the communication quality of the wireless link 105 is good, any available frequency point can be selected; when the communication quality of the wireless link 105 is poor, a frequency point with good signal quality may be selected as a frequency point used in frequency hopping.
In some embodiments, on the headphone side, an audio buffer may be maintained, and the duration of communication with the smart device may be adjusted according to the amount of audio data temporarily stored in the audio buffer, that is, the less the temporarily stored audio data is, the more the communication duration is allocated to obtain more audio data for playing after the temporarily stored audio data is exhausted, thereby avoiding interruption of playing; at this time, the communication link with better communication receiving quality can be selected to continue to transmit the audio data.
Therefore, according to the wireless communication method of the earphone and the intelligent devices, the Bluetooth links between the wireless earphone and the intelligent devices (groups) are established simultaneously, so that seamless switching of the Bluetooth links between the wireless earphone and the intelligent devices is achieved, the Bluetooth links do not need to be repeatedly established with a single intelligent device to transmit audio data, unnecessary waste of communication resources is avoided, and user experience is improved. Note that in the embodiment of the present disclosure, the plurality of different smart devices (groups) is not limited to two groups, and may be three or more groups of smart devices, and each group of smart devices is correspondingly allocated with a corresponding time period to implement data transmission.
Fig. 4 shows a schematic diagram of a wireless headset assembly according to an embodiment of the disclosure. The wireless headset assembly 400 communicates with a plurality of smart devices including a first group of smart devices and a second group of smart devices, the wireless headset assembly 400 includes a first headset 401 and a second headset 402, the first headset 401 and the second headset 402 include a first bluetooth module 401a and a second bluetooth module 402a, respectively, the wireless headset assembly 400 may further include a determining unit 403, an adjusting unit 404, and a frequency hopping unit 405.
As shown in fig. 4, each of the first bluetooth module 401a and the second bluetooth module 402a is configured to: under the condition that the corresponding earphone is used as a first master earphone, a first Bluetooth link is respectively established with each intelligent device in the first group of intelligent devices, and related communication parameters of the first Bluetooth link are transmitted to another earphone through the wireless link; under the condition that the corresponding earphone is used as a second master earphone, a second Bluetooth link is respectively established with each intelligent device in the second group of intelligent devices, and related communication parameters of the second Bluetooth link are transmitted to another earphone through the wireless link; listening to the first Bluetooth link with the respective headset as a first slave headset; and listening to the second bluetooth link if the respective headset is acting as a second slave headset. The first bluetooth module 401a and the second bluetooth module 402a are further configured to: performing communication with the first group of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of each bluetooth frame; communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and performing communication with the second group of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of the respective bluetooth frames, wherein the first, second and third time periods are separate from each other.
In some embodiments, each of the first bluetooth module 401a and the second bluetooth module 402a is configured to: not responding to signals transmitted by each smart device in the second group of smart devices while signals are kept transmitted by the second group of smart devices for the first period of time; and not responding to the signal transmitted by each smart device in the first group of smart devices while the signal transmission by the first group of smart devices is maintained for the third time period.
In some embodiments, the first time period comprises a respective first sub-time period for communicating with a respective device of the first set of smart devices, and the third time period comprises a respective third sub-time period for communicating with a respective smart device of the second set of smart devices.
In some embodiments, each of the first bluetooth module 401a and the second bluetooth module 402a is configured to: receiving a start of a time slot for the respective first sub-time segment from a respective communication device in the first group of smart devices and receiving a start of a time slot for the respective third sub-time segment from a respective communication device in the second group of smart devices.
In some embodiments, the wireless headset assembly 400 further comprises a determination module 403 configured to: communication priorities with respective devices of the first and second groups of smart devices are determined, and communication time is preferentially allocated for devices with higher communication priorities for the respective sub-time periods.
In some embodiments, the determining module 403 is further configured to: determining a duration of each sub-period of the first or third time period in dependence on communication reception quality related parameters of both the first and second headsets.
In some embodiments, the communication reception quality-related parameter includes any one of a number of retransmissions and a statistical retransmission rate, the statistical retransmission rate being smoothed over time.
In some embodiments, the wireless headset assembly 400 further includes an adjustment module 404 configured to: adjusting the timing of the wireless link such that the start of a slot of the wireless link is aligned with the start of a slot of a Bluetooth link performing the communication.
In some embodiments, the wireless headset assembly further comprises a frequency hopping module 405 configured to: and generating the frequency hopping sequence of the wireless link based on frequency points other than the frequency point of the plurality of intelligent devices for transmitting the Bluetooth frame.
In some embodiments, the frequency hopping module 405 is further configured to: and maintaining a frequency hopping table based on the communication quality of the wireless link and the signal quality of the Bluetooth link performing communication on each frequency point.
The earphone can establish the Bluetooth link between the wireless earphone and the intelligent equipment (group) with a plurality of differences simultaneously, thereby realizing the seamless switching of the Bluetooth link between the wireless earphone and the intelligent equipment with a plurality of differences, avoiding unnecessary waste of communication resources and improving the user experience because the Bluetooth link is established repeatedly with a single intelligent equipment to transmit audio data. Note that in the embodiment of the present disclosure, the plurality of different smart devices (groups) is not limited to two groups, and may be three or more groups of smart devices, and each group of smart devices is correspondingly allocated with a corresponding time period to implement data transmission.
Note that, according to various units in various embodiments of the present disclosure, may be implemented as computer-executable instructions stored on a memory, which when executed by a processor may implement corresponding steps; or may be implemented as hardware with corresponding logical computing capabilities; or as a combination of software and hardware (firmware). The units may be integrated in a single headset (first headset or second headset) to speed up the determination of wind noise and/or a microphone for speech and reduce communication overhead. In some embodiments, the processor may be implemented as any of an FPGA, an ASIC, a DSP chip, an SOC (system on a chip), an MPU (e.g., without limitation, Cortex), and the like. The processor may be communicatively coupled to the memory and configured to execute computer-executable instructions stored therein. The memory may include Read Only Memory (ROM), flash memory, Random Access Memory (RAM), Dynamic Random Access Memory (DRAM) such as synchronous DRAM (sdram) or Rambus DRAM, static memory (e.g., flash memory, static random access memory), etc., on which computer-executable instructions are stored in any format.
In some embodiments, computer executable instructions may be accessed by a processor, read from a ROM or any other suitable storage location, and loaded into RAM for execution by the processor to implement a wireless communication method in accordance with various embodiments of the present disclosure. The wireless communication method may include the following steps. And under the condition that the corresponding earphone placed by the medium is used as a first master earphone, respectively establishing a first Bluetooth link with each intelligent device in the first group of intelligent devices, and transmitting the related communication parameters of the first Bluetooth link to another earphone through the wireless link. And under the condition that the corresponding earphone is used as a second master earphone, respectively establishing a second Bluetooth link with each intelligent device in a second group of intelligent devices, and transmitting related communication parameters of the second Bluetooth link to another earphone through the wireless link. Listening to the first Bluetooth link with the respective headset as a first slave headset; and listening to the second bluetooth link if the respective headset is acting as a second slave headset. The wireless communication method may further include: performing communication with the first group of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of each bluetooth frame; communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and performing communication with the second group of smart devices via the second bluetooth link and its listening bluetooth link, respectively, during a third time period of the respective bluetooth frames, wherein the first, second and third time periods are separate from each other.
Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
Claims (19)
1. A method of wireless communication between an earset and a plurality of smart devices, the earset including a first earpiece and a second earpiece, the first earpiece and the second earpiece communicating via a wireless link, the plurality of smart devices including a first set of smart devices and a second set of smart devices, the method comprising:
establishing a first Bluetooth link with each intelligent device in the first group of intelligent devices by using one earphone in the first earphone and the second earphone as a first master earphone respectively, and transmitting related communication parameters of the first Bluetooth link to another earphone serving as a first slave earphone through the wireless link so that the first slave earphone can listen to the first Bluetooth link;
establishing a second bluetooth link with each smart device in the second group of smart devices by the second headset and one of the first headsets as a second master headset, respectively, and transmitting related communication parameters of the second bluetooth link to another headset as a second slave headset via the wireless link so that the second slave headset listens to the second bluetooth link;
each Bluetooth frame including a first time period, a second time period, and a third time period that are separate from each other, during the first time period of each Bluetooth frame, communication between the first group of smart devices is performed by the first headset and the second headset via the first Bluetooth link and its listening Bluetooth link, respectively, the second group of smart devices remains in a transmitting state while the first headset and the second headset do not receive audio data from the second group of smart devices, during the second time period of each Bluetooth frame, the first headset and the second headset communicate with each other via the wireless link, and during the third time period of each Bluetooth frame, communication between the second group of smart devices is performed by the second headset and the first headset via the second Bluetooth link and its listening Bluetooth link, respectively, the first set of smart devices remains transmitting while the first earpiece and the second earpiece do not receive audio data from the first set of smart devices.
2. The wireless communication method of claim 1, wherein the first time period comprises a first sub-time period for communicating with each of the first set of smart devices, and wherein the third time period comprises a third sub-time period for communicating with each of the second set of smart devices.
3. The method of claim 2, wherein the start of the time slot of each first sub-period is determined by a corresponding smart device in the first group of smart devices, and wherein the start of the time slot of each third sub-period is determined by a corresponding smart device in the second group of smart devices.
4. The wireless communication method according to claim 2, further comprising: determining a communication priority with each device of the first and second sets of smart devices; and preferentially allocating communication time to the equipment with higher communication priority for the corresponding sub-time period.
5. The wireless communication method according to claim 2, wherein the duration of each sub-period of the first time period or the third time period is determined according to a communication reception quality related parameter of both the first earphone and the second earphone.
6. The wireless communication method according to claim 5, wherein the communication reception quality-related parameter includes any one of a number of retransmissions and a statistical retransmission rate, and wherein the statistical retransmission rate is smoothed over time.
7. The method of claim 3, wherein the timing of the wireless link is adjusted such that the start of the slot of the wireless link is aligned with the start of the slot of the Bluetooth link.
8. The method of claim 1, wherein the frequency hopping sequence for the wireless link is generated based on a frequency other than a frequency at which the plurality of smart devices transmit bluetooth frames.
9. The wireless communication method according to claim 8, wherein a hopping list is maintained based on the communication quality of the wireless link, and the signal quality of the bluetooth link performing communication at each frequency point.
10. A wireless headset assembly, the wireless headset assembly configured to communicate with a plurality of smart devices, the plurality of smart devices including a first set of smart devices and a second set of smart devices, the wireless headset assembly including a first headset and a second headset;
the first and second headsets include first and second bluetooth modules, respectively, each of the first and second bluetooth modules configured to:
under the condition that the corresponding earphone is used as a first master earphone, a first Bluetooth link is respectively established with each intelligent device in the first group of intelligent devices, and related communication parameters of the first Bluetooth link are transmitted to another earphone through a wireless link;
under the condition that the corresponding earphone is used as a second master earphone, a second Bluetooth link is respectively established with each intelligent device in the second group of intelligent devices, and related communication parameters of the second Bluetooth link are transmitted to another earphone through the wireless link;
listening to the first Bluetooth link with the respective headset as a first slave headset; and
listening to the second Bluetooth link with the respective headset as a second slave headset;
and wherein each bluetooth frame includes a first time period, a second time period, and a third time period that are separate from one another, the first and second bluetooth modules further configured to:
during a first time period of each Bluetooth frame, performing communication with the first group of intelligent devices via the first Bluetooth link and the listening Bluetooth link thereof, respectively, and not responding to signals transmitted by each intelligent device in the second group of intelligent devices while signals are kept transmitted by the second group of intelligent devices;
communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and
and in a third time period of each Bluetooth frame, performing communication with the second group of intelligent devices through the second Bluetooth link and the listening Bluetooth link thereof respectively, and not responding to the signals transmitted by each intelligent device in the first group of intelligent devices when the signals are kept transmitted by the first group of intelligent devices.
11. The wireless headset assembly of claim 10, wherein the first time period comprises a respective first sub-time period for communicating with respective devices of the first set of smart devices and the third time period comprises a respective third sub-time period for communicating with respective smart devices of the second set of smart devices.
12. The wireless headset assembly of claim 11, wherein each of the first and second bluetooth modules is configured to: receiving a start of a time slot for the respective first sub-time segment from a respective smart device in the first set of smart devices and receiving a start of a time slot for the respective third sub-time segment from a respective smart device in the second set of smart devices.
13. The wireless headset assembly of claim 11, further comprising a determination module configured to: communication priorities with respective devices of the first and second groups of smart devices are determined, and communication time is preferentially allocated for devices with higher communication priorities for the respective sub-time periods.
14. The wireless headset assembly of claim 13, wherein the determination module is further configured to: determining a duration of each sub-period of the first or third time period in dependence on communication reception quality related parameters of both the first and second headsets.
15. The wireless headset assembly of claim 14, wherein the communication reception quality-related parameter comprises any one of a number of retransmissions and a statistical retransmission rate, the statistical retransmission rate being smooth over time.
16. The wireless headset assembly of claim 12, further comprising an adjustment module configured to: adjusting the timing of the wireless link such that the start of a slot of the wireless link is aligned with the start of a slot of a Bluetooth link performing the communication.
17. The wireless headset assembly of claim 10, further comprising a frequency hopping module configured to: and generating the frequency hopping sequence of the wireless link based on frequency points other than the frequency point of the plurality of intelligent devices for transmitting the Bluetooth frame.
18. The wireless headset assembly of claim 17, wherein the frequency hopping module is further configured to: and maintaining a frequency hopping table based on the communication quality of the wireless link and the signal quality of the Bluetooth link performing communication on each frequency point.
19. A non-transitory computer storage medium disposed in a first earpiece and a second earpiece of a wireless earpiece assembly and storing computer executable instructions that, when executed by a processor, perform a wireless communication method as follows:
under the condition that the earphone corresponding to the medium is used as a first main earphone, a first Bluetooth link is respectively established with each intelligent device in a first group of intelligent devices, and related communication parameters of the first Bluetooth link are transmitted to another earphone through a wireless link;
under the condition that the corresponding earphone is used as a second master earphone, a second Bluetooth link is respectively established with each intelligent device in a second group of intelligent devices, and related communication parameters of the second Bluetooth link are transmitted to another earphone through the wireless link;
listening to the first Bluetooth link with the respective headset as a first slave headset; and
listening to the second Bluetooth link with the respective headset as a second slave headset;
each bluetooth frame includes a first period, a second period, and a third period that are separated from each other, and the wireless communication method further includes:
performing communication with the first set of smart devices via the first bluetooth link and its listening bluetooth link, respectively, during a first time period of the respective bluetooth frame, the second set of smart devices remaining in a transmitting state while the first headset and the second headset do not receive audio data from the second set of smart devices;
communicating with each other via the wireless link during a second time period of the respective Bluetooth frame; and
during a third time period of the respective bluetooth frames, performing communication with the second set of smart devices via the second bluetooth link and its listening bluetooth link, respectively, the first set of smart devices remaining in a transmitting state while the first headset and the second headset do not receive audio data from the first set of smart devices.
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| CN115776662A (en) * | 2021-09-08 | 2023-03-10 | Oppo广东移动通信有限公司 | Bluetooth connection method, device, earphone device and computer readable storage medium |
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