CN116156639A - Wireless multipoint omnidirectional audio transmission method, device, system and electronic device - Google Patents
Wireless multipoint omnidirectional audio transmission method, device, system and electronic device Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- 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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Abstract
The invention provides a wireless multi-point omni-directional audio transmission method, equipment, a system and electronic equipment, relates to the technical field of communication, and is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, wherein each omni-directional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state, and when the method is in the omnidirectional receiving and transmitting state, the following steps are executed in each preset broadcasting period: receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not longer than the receiving period; and broadcasting the second signal outwards, wherein the maximum broadcasting duration of the second signal is not greater than the length of the transmission period. The invention solves the problem that the multipoint wireless audio cannot be transmitted omnidirectionally in the prior art.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a wireless multipoint omni-directional audio transmission method, device, system and electronic device.
Background
The wireless audio technology brings unconstrained free conversation and music enjoyment to people, and is widely loved by people. In particular to Bluetooth low energy (BLE: bluetooth Low Energy) Audio (Audio) technology, which adopts a point-to-point communication connection isochronous stream (CIS: connected Isochronous Stream) protocol and a point-to-multipoint communication broadcasting isochronous stream (BIS: broadcast Isochronous Stream) protocol, and a corresponding connection isochronous group (CIG: connected Isochronous Group) protocol formed by one or more CIS and broadcasting isochronous group (BIG: broadcast Isochronous Group) protocol formed by one or more BIS, lower power consumption, lower cost and higher quality wireless Audio service can be brought to people. However, BLE Audio can only provide a point-to-point unidirectional or bidirectional Audio service, and a point-to-multipoint unidirectional Audio service, and cannot provide an omni-directional call function between multiple points, and a multipoint-to-multipoint wireless microphone or a multipoint-to-multipoint Audio sharing function.
Disclosure of Invention
The embodiment of the invention provides a wireless multipoint omnidirectional audio transmission method, equipment, a system and electronic equipment, which solve the problem that the multipoint wireless audio cannot be transmitted omnidirectionally in the prior art.
In order to solve the technical problems, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a wireless multi-point omni-directional audio transmission method, which is applied to a wireless multi-point omni-directional audio system including at least 2 omni-directional wireless audio devices, where each omni-directional wireless audio device has the same preset broadcast period, and each preset broadcast period includes at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state, and when the omnidirectional wireless audio equipment is in the omnidirectional receiving and transmitting state, the following steps are executed in each preset broadcasting period:
receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
Optionally, if one first signal received by the omnidirectional wireless audio device carries a maximum non-overlapping period number n in the preset broadcast period, n is a positive integer, when a maximum receiving duration of the first signal is equal to a maximum broadcast duration of the second signal and the receiving period is equal to the transmitting period, a maximum receiving duration of the first signal < = a length of the receiving period < = a length/n of the preset broadcast period.
Optionally, if the second signal of the omni-directional wireless audio device carries the maximum non-overlapping period number n in the preset broadcasting period, where n is a positive integer, the omni-directional wireless audio device receives at most n-1 first signals sent by the omni-directional wireless audio devices in the preset broadcasting period.
Optionally, the working state of the omnidirectional wireless audio device further includes a unidirectional receiving state;
when the working state of the omnidirectional wireless audio equipment is switched from the omnidirectional receiving and transmitting state to the unidirectional receiving state, the method comprises the following steps:
stopping broadcasting the second signal in the preset broadcasting period;
when the working state of the omnidirectional wireless audio equipment is switched from a unidirectional receiving state to an omnidirectional receiving and transmitting state, the method comprises the following steps:
and recovering the second signal to be broadcast outwards in the preset broadcast period, wherein the maximum broadcast duration of the second signal is not more than the length of the transmission period.
Optionally, after stopping broadcasting the second signal in the preset broadcasting period, the method further includes:
and receiving first signals transmitted by other omni-directional wireless audio devices in the transmission period.
Optionally, when the second signal is a broadcast isochronous stream, the broadcasting the second signal includes:
Determining a target anchor point of a second broadcast isochronous group BIG link of the second signal according to a local clock; the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
Optionally, when the first signal and the second signal are broadcast isochronous streams, the externally broadcasting the second signal includes:
calculating a target anchor point of a second broadcast isochronous group BIG link of the second signal according to the received anchor point of the first broadcast isochronous group BIG link of the first signal;
the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
Optionally, the first signal and the second signal are received or transmitted through a bluetooth low energy broadcast isochronous stream protocol link.
In a second aspect, the embodiment of the present invention further provides an omni-directional wireless audio device, which is applied to a wireless multi-point omni-directional audio system including at least 2 omni-directional wireless audio devices, each having the same preset broadcast period, each preset broadcast period including at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state;
The omnidirectional wireless audio equipment comprises a transceiver module, wherein the transceiver module is used for executing the following steps in each preset broadcasting period when in an omnidirectional transceiver state:
receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
In a third aspect, an embodiment of the present invention further provides a wireless multi-point omni-directional audio system, including at least 2 omni-directional wireless audio devices according to the second aspect.
Optionally, the wireless multi-point omnidirectional audio system further comprises: the one-way wireless audio device is used for receiving a first signal sent by the at least one omni-directional wireless audio device in each preset receiving period.
In a fourth aspect, an embodiment of the present invention further provides an electronic device, including: a memory, a processor, and a program stored on the memory and executable on the processor; the processor, when executing the program, implements the steps in the wireless multi-point omni-directional audio transmission method according to any one of the first aspect.
In a fifth aspect, an embodiment of the present invention further provides a readable storage medium having stored thereon a program which, when executed by a processor, implements the steps of the wireless multi-point omni-directional audio transmission method according to any of the first aspects.
In the embodiment of the invention, the wireless multi-point omni-directional audio transmission method is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, and each omni-directional wireless audio device has the same preset broadcasting period. Each preset broadcasting period includes at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state; and when the omnidirectional wireless audio equipment is in an omnidirectional receiving and transmitting state, receiving a first signal and an outbound broadcast second signal sent by at least one other omnidirectional wireless audio equipment in each preset broadcast period. The method can realize wireless multipoint communication functions among a plurality of devices in the wireless multipoint omnidirectional audio system, such as omnidirectional communication, and also realize multipoint-to-multipoint wireless microphone or multipoint-to-multipoint audio sharing function.
Drawings
Various other 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 designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic flow chart of a wireless multi-point omni-directional audio transmission method according to an embodiment of the present invention;
fig. 2 is a second flowchart of a wireless multi-point omni-directional audio transmission method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an omni-directional wireless audio device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a wireless multi-point omni-directional audio system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
FIG. 6 is a second schematic diagram of an electronic device according to an embodiment of the present invention;
fig. 7 is a third schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.
BIS (BIS: broadcast Isochronous Stream, broadcast isochronous stream): the broadcast isochronous stream (BIS: broadcast Isochronous Stream) protocol for point-to-multipoint communication, the broadcast isochronous group (BIG: broadcast Isochronous Group) protocol consisting of one or more BIS, is the relationship between BIS and BIG. BIGs are a collection of BISs.
Anchor Point (Anchor Point): the transmission start point of the first BIS in the BIG.
When the signal is a BIS signal, the reception period/transmission period may include advertisement (ADV: advertisement) slots, BIG sub-event (SE: subevent) slots, BIG Control sub-event (CS: control Subevent) slots.
Wherein: advertisement (advertisement) time slot: is divided into three types of a main ADV (Primary Advertising) time slot, a secondary ADV (Secondary Advertising) time slot and a period ADV (Periodic Advertising) time slot, and transmitted in a time sharing manner.
The PDU (Protocol Data Unit ) refers to the unit of data transferred between peer levels. The PDU of the physical layer of the protocol data unit is a data bit, the PDU of the data link layer is a data frame, the PDU of the network layer is a data packet (packet), the PDU of the transport layer is a data segment (segment), and the other higher layer PDUs are data.
BIG sub event (SE: subevent): the sub-event is a period of time, and the PDU is transmitted and received in the form of a protocol data packet at the time of each sub-event.
BIG Control sub-event (CS: control Subevent) time slot: time for transmitting the control information.
The sum of ADV slots, SE slots, and CS slots of the BIG link does not exceed 5ms.
The unidirectional wireless audio device only supports unidirectional receiving audio signals or only supports wireless audio devices which transmit audio signals outwards, and the outwards transmitting mode can be a single-point-to-single-point signal transmitting mode or a single-point-to-multiple-point signal broadcasting mode.
The omni-directional wireless audio equipment not only supports wireless audio equipment for receiving audio signals, but also supports wireless audio equipment for externally transmitting audio signals, wherein the externally transmitting mode can be a point-to-point signal transmitting mode or a point-to-multipoint signal broadcasting mode.
In the embodiment of the invention, the unidirectional wireless audio equipment particularly refers to wireless audio equipment which only supports unidirectional receiving audio signals.
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a flow chart of a wireless multi-point omni-directional audio transmission method for wireless communication according to an embodiment of the present invention;
the embodiment of the invention provides a wireless multi-point omni-directional audio transmission method which is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, wherein each omni-directional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state, and when the omnidirectional wireless audio equipment is in the omnidirectional receiving and transmitting state, the following steps are executed in each preset broadcasting period:
step 11: receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
step 12: and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
In the embodiment of the invention, the wireless multi-point omni-directional audio transmission method is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, and each omni-directional wireless audio device has the same preset broadcasting period. Each preset broadcasting period includes at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state; and when the omnidirectional wireless audio equipment is in an omnidirectional receiving and transmitting state, receiving a first signal and an outbound broadcast second signal sent by at least one other omnidirectional wireless audio equipment in each preset broadcast period. The method can realize wireless multipoint communication functions among a plurality of devices in the wireless multipoint omnidirectional audio system, such as omnidirectional communication, and also realize multipoint-to-multipoint wireless microphone or multipoint-to-multipoint audio sharing function.
In some embodiments of the invention, optionally, the method further comprises:
and decoding the received at least one first signal to obtain audio data, and playing the audio data.
In the embodiment of the invention, after the first signal is received, the omnidirectional wireless audio equipment can also decode the first signal to obtain audio data, and play one or a plurality of audio signals in a mixed mode at a time, so that a multipoint-to-multipoint audio sharing function is realized.
In some embodiments of the present invention, optionally, in some embodiments of the present invention, if a first signal received by the omnidirectional wireless audio device carries a number n of periods of maximum non-overlapping in the preset broadcast period, n is a positive integer, a maximum receiving duration of the first signal is equal to a maximum broadcast duration of the second signal, and the receiving period is equal to the transmitting period, where the maximum receiving duration of the first signal < = the length of the receiving period < = the length/n of the preset broadcast period.
Specifically, the maximum non-overlapping period number n further indicates that the number of the omni-directional wireless audio devices which can be contained at most in the preset broadcasting period is n; the non-overlapping time periods of the preset broadcasting period are sequentially recorded as a first time period, a second time period … … nth time period or time period 0, a time period 1 … … time period n, and n is a positive integer.
In the embodiment of the present invention, when the maximum receiving duration of the first signal of each omni-directional wireless audio device is equal to the maximum broadcasting duration of the second signal and the receiving period is equal to the transmitting period, the period of the preset broadcasting period may be divided into n parts, and the receiving period is equal to the transmitting period, which is equal to the duration/n of the preset broadcasting period. When the first signal carries the maximum non-overlapping time period number n in the preset broadcasting period, the method can intuitively and conveniently control the state of each omnidirectional wireless audio device in the wireless multipoint omnidirectional audio system, and meets the audio transmission requirements in different scenes.
In some embodiments of the present invention, optionally, if the second signal of the omni-directional wireless audio device carries the number n of periods of time that are not overlapped to the maximum in the preset broadcast period, where n is a positive integer, the omni-directional wireless audio device receives at most n-1 first signals sent by the omni-directional wireless audio devices in the preset broadcast period.
In the embodiment of the present invention, when the second signal of the omni-directional wireless audio device carries the maximum non-overlapping period number n in the preset broadcast period, the omni-directional wireless audio device receives at most n-1 first signals sent by the omni-directional wireless audio devices in the preset broadcast period.
In some embodiments of the present invention, optionally, the operation state of the omni-directional wireless audio device further includes a unidirectional reception state;
when the working state of the omnidirectional wireless audio equipment is switched from the omnidirectional receiving and transmitting state to the unidirectional receiving state, the method comprises the following steps:
stopping broadcasting the second signal in the preset broadcasting period;
when the working state of the omnidirectional wireless audio equipment is switched from a unidirectional receiving state to an omnidirectional receiving and transmitting state, the method comprises the following steps:
and recovering the second signal to be broadcast outwards in the preset broadcast period, wherein the maximum broadcast duration of the second signal is not more than the length of the transmission period.
In the embodiment of the invention, the omnidirectional wireless audio equipment in the wireless multipoint omnidirectional audio system can be switched from the omnidirectional receiving and transmitting state to the unidirectional receiving state, and the second signal is not broadcasted outwards when the omnidirectional receiving state is switched to the unidirectional receiving state. But can continuously receive signals broadcast by other omnidirectional wireless devices according to scene requirements, so that the application scene of the method is expanded, and the audio transmission requirements of users in different scenes are met.
Specifically, when the wireless multi-point omni-directional audio transmission method is applied to a conference system for providing wireless call service, the conference system does not limit the number of unidirectional wireless audio devices, namely the number of people participating in the conference to answer the conference, but at most n omni-directional wireless audio devices work simultaneously in a preset broadcasting period, namely at most n people (the maximum non-overlapping period number in the preset broadcasting period) can talk simultaneously. If one omni-directional wireless audio device does not search the idle period for self-external broadcast signals in the preset broadcast period, the user can control the omni-directional wireless audio device to execute mute operation and switch from an omni-directional receiving and transmitting state to a unidirectional receiving state. At this time, when other people have a talk demand, other omni-directional wireless audio devices in the system can search for an idle period of the device, join and broadcast transmit audio to the omni-directional wireless audio devices.
In some embodiments of the present invention, optionally, after the broadcasting of the second signal is stopped in the preset broadcasting period, the method further includes:
and receiving first signals transmitted by other omni-directional wireless audio devices in the transmission period.
In the embodiment of the invention, the omnidirectional wireless audio equipment can be switched to a unidirectional receiving state so as to meet the audio transmission requirements in different scenes. In addition, after the wireless audio transmission system is switched to the unidirectional receiving state, new omnidirectional wireless audio equipment can be introduced into the wireless audio transmission system according to the user requirement or the omnidirectional wireless audio equipment can be switched to the omnidirectional receiving and transmitting state again, so that the construction mode of the wireless audio transmission system is further widened, and the application scene of the wireless multipoint omnidirectional audio transmission method is enriched.
In some embodiments of the present invention, optionally, the duration of the preset broadcast period is any one of 5ms to 100 ms.
Referring to fig. 2, fig. 2 is a second flowchart of a wireless multi-point omni-directional audio transmission method according to an embodiment of the present invention; with a BLE Audio (Bluetooth Low Energy Audio ) BIG (Broadcast Isochronous Group, broadcast isochronous group) wireless multi-point omni-directional Audio transmission method as an embodiment, fig. 2 is a time period structure diagram of a wireless multi-point omni-directional Audio system when the wireless multi-point omni-directional Audio transmission method provided by the embodiment of the invention is applied to the system, wherein a preset broadcast period of the broadcast isochronous group BIG is 20ms, and the broadcast isochronous group includes one BIS (Broadcast Isochronous Stream ).
The wireless multi-point omni-directional audio system comprises 4 omni-directional wireless audio devices (respectively designated as device 0, device 1, device 2 and device 3) and 4 BIGs (respectively designated as BIS0, BIS1, BIS2 and BIS 3), wherein each BIS comprises 3 subevents (SE 0, SE1 and SE 2), each BIG is spaced for 5ms, and the 4 BIGs occupy four time periods (respectively designated as time period 0, time period 1, time period 2 and time period 3) which are not overlapped with each other. The omni-directional wireless audio devices all use a 2Mbps physical layer transmission rate, the sub-event Number of BIS (NSE: number of Subevent) is3, the Burst Number (BN: burst Number) is1, the immediate repetition Number (IRC: immediate Repetition Count) is3, and the Pre-transmit offset (PTO: pre-Transmission Offset) is 0. The mono speech is sampled at 32kHz, encoded with a low complexity communication encoder (LC 3: low Complexity Communication Codec), a Frame Length (Frame Length) of 10ms, a coding rate of 64kbps, an audio service packet (SDU: service Data Unit) of 80 bytes, and a payload of a BIG protocol packet (PDU: protocol Data Unit) containing two SDUs of 160 bytes in Length.
Each omnidirectional wireless audio device is used for receiving and transmitting wireless signals in each period of a preset broadcasting period, taking BIG audio signals as an example, and the transmitting time of one BIG audio signal comprises an advertisement time slot, 3 broadcasting isochronous stream sub-event time slots and a Control Subevent time slot; if the air time of an encrypted BIG audio PDU is 700us, the sub-event interval (t_mss: minimum Subevent Space) is 150us, i.e. 850us (700+150) is occupied per audio packet transmitted. The total air time occupied by the three Subevent sub-events is 2550us; the omni-directional wireless audio device may transmit ADV once within a preset broadcast period, with an ADV to SE0 interval of 1250us. The omni-directional wireless audio device may send a BIG Control PDU in a Control slot in each preset broadcast period, taking BIG CHANNEL MAP IND PDU as an example, the air time is 96us, and after adding t_mss, the occupation time is 246us. That is, the air time occupied by the omni-directional wireless audio device in a preset broadcast period is 246+2550+1250=4046 us, which is less than 5ms. Thus, the periods occupied by 4 BIG at intervals of 5ms are non-overlapping with each other.
Taking the device 2 as an example, the wireless communication signal BIS0 broadcasted by the device 0 is received in a period 0 within a preset broadcasting period; receiving a wireless communication signal BIS1 broadcast by the equipment 1 in a period 1 within a preset broadcasting period; broadcasting a wireless communication signal BIS2 to other devices in a period 2 within a preset broadcasting period; the wireless communication signal BIS3 broadcast by the device 3 is received in a period 3 within a preset broadcast period. Also, taking the device 0 as an example, the wireless communication signal BIS0 is broadcast to other devices in a period 0 within a preset broadcast period, and the wireless communication signal BIS1 broadcast by the device 1 is received in a period 1 within the preset broadcast period; receiving a wireless communication signal BIS2 broadcast by the device 2 in a period 2 within a preset broadcast period; the wireless communication signal BIS3 broadcast by the device 3 is received in a period 3 within a preset broadcast period.
In some embodiments of the present invention, optionally, the first signal carries wireless multi-point omni-directional audio function information, where the wireless multi-point omni-directional audio function information includes a maximum non-overlapping period number n in the preset broadcast period and a device type of an omni-directional wireless audio device, and n is a positive integer.
In some embodiments of the present invention, optionally, the maximum number of non-overlapping time periods includes at least 2, i.e., n is a positive integer greater than or equal to 2.
Specifically, the omni-directional wireless audio device uses reserved bytes (RFU: reserved for Future Use) of BIGInfo in a periodic ADV auxiliary synchronization (AUX_SYNC_IND) PDU to convey wireless Multi-point omni-directional audio (MPOA: multi-Point Omnidirectional Audio) function information. As shown in the table below.
| MPOA_En(1bit) | NMP(3bit) |
Specifically, the wireless Multi-Point omni-directional audio function information includes 4 bits, wherein 1bit (1 bit) is an MPOA enabled bit (MPOA_En: MPOA Enable), 3bits (3 bits) is the Number of Multi-points (NMP) that can be accommodated at most, NMP is a positive integer, and is the maximum non-overlapping period Number n in a preset broadcasting period calculated according to BIG parameters. When MPOA_En is set to 1, which represents the device is an omni-directional wireless Audio device, MPOA_En is set to 0, which represents a normal BLE Audio broadcasting device.
In some embodiments of the present invention, optionally, when the second signal is a broadcast isochronous stream, the externally broadcasting the second signal includes:
determining a target anchor point of a second broadcast isochronous group BIG link of the second signal according to a local clock; the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
In the embodiment of the present invention, when the second signal is a broadcast isochronous stream, the omnidirectional wireless audio device may determine a target anchor point according to the local clock, and broadcast the second signal through the second broadcast isochronous group BIG link.
Specifically, referring to fig. 2, in the wireless multi-point omni-directional audio system, when the device 2 broadcasts the second signal outwards, the second signal carries wireless multi-point omni-directional audio function information, where the wireless multi-point omni-directional audio function information includes a maximum non-overlapping period number n (n=4) in the preset broadcast period and a device type (mpa enable bit=1) of the device 2. Before device 2 sends audio by broadcast, it is first searched whether other omni-directional wireless audio devices are present. The method of identifying other omni-directional wireless audio devices is to detect whether the MPOA_En of BIGInfo of the received period ADV is set to 1. If no other omni-directional wireless audio device is searched for within a certain time (for example, 30 seconds), the omni-directional wireless audio device starts to transmit the main ADV, the secondary ADV and the period ADV, wherein the mpa_en in the BIGInfo of the period ADV is set to 1, and the nmp is set to the maximum non-overlapping period number in the preset broadcasting period calculated according to the BIG parameter, that is, the maximum number of omni-directional wireless audio devices capable of transmitting audio through broadcasting in the preset broadcasting period.
The device 2 receives a first signal in a preset broadcast period carrying a maximum number of non-overlapping periods n=4 within the preset broadcast period from the device 0. The device 2 determines the Anchor Point for establishing the BIG link according to the local clock and transmits audio through BIG. When the BIG of the device 0 is searched, searching whether other omni-directional wireless audio devices transmitting audio through broadcasting exist in other non-overlapping periods according to the preset broadcasting period of the BIG fo and the maximum non-overlapping period number in the preset broadcasting period (the technical scheme also searches for wireless communication signals transmitted by the device 1 in the period 1 and searches for wireless communication signals transmitted by the device 3 in the period 3). If there are non-overlapping idle periods within the preset broadcast period, the omni-directional wireless audio device begins to calculate the anchor points of the bits and the time points of sending the primary ADV, secondary ADV and period ADV from the anchor points of other BIG's already synchronized.
In some embodiments of the present invention, optionally, when the first signal and the second signal are broadcast isochronous streams, the externally broadcasting the second signal includes:
calculating a target anchor point of a second broadcast isochronous group BIG link of the second signal according to the received anchor point of the first broadcast isochronous group BIG link of the first signal;
the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
In the embodiment of the invention, when the first signal and the second signal are broadcast isochronous streams, the omnidirectional wireless audio device can determine the target anchor point according to the received link anchor point of the first signal and broadcast the second signal through the second broadcast isochronous group BIG link.
Specifically, if the BIG of any one omni-directional wireless audio device is searched, searching whether other non-overlapping periods exist other omni-directional wireless audio devices transmitting audio through broadcasting according to a preset broadcasting period of the BIG fo and/or a maximum non-overlapping period number n within the preset broadcasting period. If there are non-overlapping idle periods within the preset broadcast period, the omni-directional wireless audio device begins to calculate the anchor points of the bits and the time points of sending the primary ADV, secondary ADV and period ADV from the anchor points of other BIG's already synchronized. For example, as shown in fig. 2, in the omni-directional wireless audio transmission system, after the device 3 confirms that the period 0, the period 1, and the period 2 exist the BIS0, the BIS1, and the BIS2 of the device 0, the device 1, and the device 2, transmits the primary ADV, the secondary ADV, and the periods ADV and BIG in the period 3, and determines the anchor points of the time points of transmitting the primary ADV, the secondary ADV, and the periods ADV and BIG according to the anchor points of the BIS0, the BIS1, or the BIS 3.
In some embodiments of the invention, optionally, the first signal and the second signal are received or transmitted over a bluetooth low energy broadcast isochronous stream protocol link.
In the embodiment of the invention, when the first signal and the second signal carry the Bluetooth low-power-consumption broadcast isochronous stream protocol data packet, the signal is received or transmitted through the Bluetooth low-power-consumption broadcast isochronous stream protocol link. The wireless multipoint omnidirectional audio transmission method can be applied to the field of Bluetooth low-power consumption multipoint audio transmission, and the problem that the Bluetooth audio transmission in the prior art cannot perform multipoint-to-multipoint omnidirectional audio transmission is solved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an omni-directional wireless audio device according to an embodiment of the present invention; the embodiment of the invention also provides an omni-directional wireless audio device 30, which is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, wherein each omni-directional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state;
The omni-directional wireless audio device includes a transceiver module 31, configured to perform the following steps in each preset broadcast period when in an omni-directional transceiving state:
receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
In the embodiment of the invention, the omni-directional wireless audio device is applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, and each omni-directional wireless audio device has the same preset broadcasting period. Each preset broadcasting period includes at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state; and when the omnidirectional wireless audio equipment is in an omnidirectional receiving and transmitting state, receiving a first signal and an outbound broadcast second signal sent by at least one other omnidirectional wireless audio equipment in each preset broadcast period. The device can realize wireless multipoint communication functions among a plurality of devices in a wireless multipoint omnidirectional audio system, such as omnidirectional communication, and also realize multipoint-to-multipoint wireless microphone or multipoint-to-multipoint audio sharing function.
In addition, it should be noted that all relevant contents of each step related to the foregoing embodiment of the wireless multi-point omni-directional audio transmission method may be cited to the functional description of the corresponding functional module, which is not repeated herein.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a wireless multi-point omni-directional audio system according to an embodiment of the present invention; the embodiment of the present invention also provides a wireless multi-point omni-directional audio system 40, comprising: at least 2 omni-directional wireless audio devices 30 as described in the above embodiments.
In an embodiment of the present invention, a wireless multi-point omni-directional audio system includes at least 2 omni-directional wireless audio devices, each having the same preset broadcast period. Each preset broadcasting period includes at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state; and when the omnidirectional wireless audio equipment is in an omnidirectional receiving and transmitting state, receiving a first signal and an outbound broadcast second signal sent by at least one other omnidirectional wireless audio equipment in each preset broadcast period. The system can realize wireless multipoint communication functions among a plurality of devices in the wireless multipoint omnidirectional audio system, such as omnidirectional communication, and also realize multipoint-to-multipoint wireless microphone or multipoint-to-multipoint audio sharing function.
In some embodiments of the present invention, optionally, the wireless multi-point omnidirectional audio system 40 further comprises: at least one unidirectional wireless audio device 41, wherein the preset receiving period of the unidirectional wireless audio device 41 is the same as the preset broadcasting period of the omnidirectional wireless audio device 30, and the unidirectional wireless audio device 41 is used for receiving the first signal sent by the at least one omnidirectional wireless audio device in each preset receiving period.
In the embodiment of the invention, the wireless multi-point omni-directional audio system comprises the omni-directional wireless audio equipment and the unidirectional wireless audio equipment, enriches the constitution forms of the wireless multi-point omni-directional audio system, and is suitable for various application scenes.
Specifically, referring to fig. 4, the wireless multi-point omni-directional audio system 40 is composed of 4 omni-directional wireless audio devices 30 and 4 unidirectional wireless audio devices 41. The omni-directional wireless audio device 30 is capable of receiving audio transmitted by other devices while transmitting audio when in an omni-directional transceiving state. The unidirectional wireless audio device 41 can only receive audio transmitted by other devices. The wireless multi-point omni-directional audio system 40 employs synchronized multi-point audio broadcasting to effect multi-point to multi-point audio transmission. Each omnidirectional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state, and when the omnidirectional wireless audio equipment is in the omnidirectional receiving and transmitting state, the steps are executed in each preset broadcasting period: receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period; and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
In some embodiments of the invention, optionally, the preset broadcast period is an isochronous interval (Isochronous Interval). At this time, each isochronous interval is divided into at least two periods that do not overlap each other. The number D of the omnidirectional wireless audio devices in the wireless multipoint omnidirectional audio system is more than or equal to 2 and less than or equal to n, namely D epsilon [2, n ].
The unidirectional wireless audio device searches the omnidirectional wireless audio device, and searches and synchronizes other omnidirectional wireless audio devices according to the MPOA_En and NMP parameters of BIGInfo of the period ADV after synchronizing any one omnidirectional wireless audio device. After the unidirectional wireless audio device synchronizes the omnidirectional wireless audio device, part or all of audio broadcast by the synchronous omnidirectional wireless audio device is received and independently played or mixed and then played.
In some embodiments of the present invention, optionally, the operating state of the omni-directional wireless audio device 30 further includes a unidirectional receiving state;
the operation state of the omni-directional wireless audio device 30 is switched from the omni-directional receiving and transmitting state to the unidirectional receiving state or from the unidirectional receiving state to the omni-directional receiving and transmitting state.
Specifically, when the wireless multi-point omni-directional audio transmission method is applied to a conference system for providing wireless call service, the conference system does not limit the number of unidirectional wireless audio devices, namely the number of people participating in the conference to answer the conference, but at most n omni-directional wireless audio devices work simultaneously in a preset broadcasting period, namely at most n people (the maximum non-overlapping period number in the preset broadcasting period) can talk simultaneously. If one omni-directional wireless audio device does not search the idle period for self-external broadcast signals in the preset broadcast period, the user can control the omni-directional wireless audio device to execute mute operation and switch from an omni-directional receiving and transmitting state to a unidirectional receiving state. At this time, when other people have a talk demand, other omni-directional wireless audio devices in the system can search for an idle period of the device, join and broadcast transmit audio to the omni-directional wireless audio devices.
The wireless multi-point omnidirectional audio system can be applied to a conference system scene, the omnidirectional wireless audio device can be a wireless Bluetooth headset which can receive audio signals and can speak, and the unidirectional wireless audio device can be a wireless Bluetooth headset which can only support receiving audio signals for a closed or non-speaking function. In one application example, assuming n=4, the system also has 4 omni-directional wireless audio devices, abbreviated as device 0-device 3,3 unidirectional wireless audio devices, respectively (2 of which have no talk function, i.e., can only support unidirectional receive state; 1 of which have off talk function, which can support omni-directional transmit receive state but are in unidirectional receive state). When one omnidirectional wireless audio device broadcasts audio outwards in a transmitting period of each preset broadcasting period, the other 6 devices in the system can receive the audio in a receiving period of the preset broadcasting period, each omnidirectional wireless audio device broadcasts the audio outwards in sequence in the respective transmitting period of each preset broadcasting period, specifically, as shown in fig. 2, devices 0-4 sequentially broadcast the audio outwards in the respective transmitting period, so that voice conversation can be carried out between the 4 omnidirectional wireless audio devices in real time, and the audio broadcast outwards by the 2 unidirectional wireless audio devices without speaking function and the 1 unidirectional wireless audio device with speaking function can be listened to in real time. Assuming that the number of existing omni-directional wireless audio devices in the system is smaller than n, a unidirectional wireless audio device capable of supporting an omni-directional transmitting and receiving state but in a unidirectional receiving state can be changed into an omni-directional wireless audio device by switching to the omni-directional transmitting and receiving state.
In the embodiment of the invention, the wireless multi-point omni-directional audio system comprises the omni-directional wireless audio equipment and the unidirectional wireless audio equipment, and the omni-directional wireless audio equipment can be switched between the unidirectional receiving state and the omni-directional receiving state according to the user requirement, so that the construction mode of the wireless audio transmission system is further widened, and the application scene of the wireless multi-point omni-directional audio transmission method is enriched. The new omni-directional wireless audio device can be introduced into the wireless audio transmission system according to the user demand, and the scale of the wireless multi-point omni-directional audio system can be enlarged.
In some embodiments of the present invention, the unidirectional wireless audio device may be a device that only receives and plays broadcast audio, or may be an omnidirectional wireless audio device that only receives broadcast audio and does not transmit audio in a unidirectional reception state. That is, the omni-directional wireless audio device may switch between receiving only broadcast audio and the role of receiving broadcast audio and transmitting audio.
In some embodiments of the present invention, optionally, the omni-directional wireless audio device may switch to a unidirectional reception state when it detects that there is no idle period for broadcast transmission of audio within a preset broadcast period. When it is detected that there is an idle period for broadcasting transmission audio within a preset broadcasting period, it is possible to switch to a bi-directional transceiving state.
In some embodiments of the present invention, each omni-directional wireless audio device may optionally also implement a multi-point to multi-point wireless microphone system by broadcasting only audio that is transmitted without receiving audio broadcast by other devices, in combination with unidirectional wireless audio devices.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention. The embodiment of the invention also provides an electronic device 50, which comprises: a memory 51, a processor 52, and a program stored on the memory 51 and executable on the processor 52; the processor 52, when executing the program, implements the various processes of the wireless multi-point omni-directional audio transmission method embodiments described above.
In the embodiment of the invention, a program executed by an electronic device is applied to a wireless multi-point omnidirectional audio system comprising at least 2 omnidirectional wireless audio devices, each omnidirectional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state; the omni-directional wireless audio device receives a first signal and an outbound broadcast second signal transmitted by at least one other omni-directional wireless audio device in each preset broadcast period of the omni-directional transceiving state. The wireless multipoint communication function among a plurality of devices in the wireless multipoint omnidirectional audio system, such as omnidirectional communication, is realized, and the multipoint-to-multipoint wireless microphone or the multipoint-to-multipoint audio sharing function is also realized.
Referring to fig. 6, fig. 6 is a second schematic structural diagram of an electronic device according to an embodiment of the invention; at this time, the electronic device 60 is in a unidirectional receiving state, and the electronic device 60 includes an audio output unit 65, an audio processing and storing unit 64, a baseband and protocol processor 63, a radio frequency unit 62 and an antenna 61;
the antenna 61 is configured to receive a first signal;
the radio frequency unit 62 is configured to convert or demodulate the first signal into baseband data;
the baseband and protocol processor 63 is configured to parse the baseband data (PDU) to obtain encoded audio data;
the audio processing and storage unit 64 is used for decoding the audio data;
the audio output unit 65 is configured to play the decoded audio data.
In the embodiment of the invention, after the electronic equipment is switched from the omnidirectional receiving and transmitting state to the unidirectional receiving state, the electronic equipment can only receive the first signal and analyze the audio data from the first signal to play. The method can be matched with the omnidirectional wireless audio equipment to realize the omnidirectional communication function among a plurality of equipment multipoint and the multipoint-to-multipoint wireless microphone or the multipoint-to-multipoint audio sharing function.
Referring to fig. 7, fig. 7 is a third schematic structural diagram of an electronic device according to an embodiment of the invention.
The electronic equipment is in an omnidirectional receiving and transmitting state and comprises an audio acquisition unit 76, an audio output unit 75, an audio processing and storage unit 74, a baseband and protocol processor 73, a radio frequency unit 72 and an antenna 71;
the antenna 71 is configured to receive a first signal sent by another omni-directional wireless audio device;
the radio frequency unit 72 is configured to convert or demodulate the first signal into baseband data;
the baseband and protocol processor 73 is configured to parse the baseband data (PDU) to obtain encoded audio data;
the audio processing and storing unit 74 is used for decoding the audio data;
the audio output unit 75 is configured to play the decoded audio data;
the audio acquisition unit 76 is configured to acquire a second signal broadcasted to the outside;
the audio output unit 75 is further configured to play the second signal;
the audio processing and storage unit 74 is also used for encoding and storing the second signal;
the baseband and protocol processor 73 is further configured to execute a wireless communication protocol to process the second signal into a communication PDU;
the radio frequency unit 72 is configured to process the communication PDU into a radio frequency signal;
the antenna 71 is used for transmitting the radio frequency signal to other electronic devices.
Specifically, in some embodiments of the present invention, the audio acquisition unit is configured to acquire an audio signal for broadcast transmission, for example, the audio acquisition unit may be a microphone. The Audio processing and storing unit is used for processing the Audio signal of the Audio acquisition unit, for example, the Audio data is encoded and stored according to the LC3 of BLE Audio, and the Audio data encoded by the LC3 provided by the baseband and protocol processor is decoded and sent to the Audio output unit. The baseband and protocol processor is used for executing a wireless communication protocol, processing the encoded audio data into communication PDU, and sending the communication PDU to the radio frequency unit for processing into radio frequency signals, and sending the radio frequency signals through the antenna.
In the embodiment of the invention, the electronic equipment can synchronously receive the audio broadcast by other equipment and send the audio through broadcasting in the preset time period of the preset broadcasting period, and each omni-directional audio equipment receives the audio information which comes from the unidirectional/omni-directional audio equipment and carries the maximum non-overlapping time period number in the preset broadcasting period, then receives and broadcasts the audio of the electronic equipment in the idle time period in the preset broadcasting period, synchronously sends the maximum non-overlapping time period number in the preset broadcasting period to other equipment in the system when the audio is externally broadcast, thereby realizing the omni-directional communication function among multiple equipment and the multi-point to multi-point wireless microphone or the multi-point to multi-point audio sharing function. When the plurality of electronic devices are applied to the same wireless multipoint omnidirectional audio system, the broadcasting periods of the plurality of omnidirectional wireless audio devices are the same, and the broadcasting periods are not overlapped with each other.
The embodiment of the invention also provides a readable storage medium for storing a program, which when executed by a processor, implements each process of the wireless multipoint omni-directional audio transmission method embodiment described above, and can achieve the same technical effects, and is not repeated here. 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 memories (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memories (e.g., CD, DVD, BD, HVD, etc.), semiconductor memories (e.g., ROM, EPROM, EEPROM, nonvolatile memories (NAND FLASH), solid State Disks (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 … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. In light of such understanding, the technical solutions of the present invention may be embodied essentially or in part in the form of a software product stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in the various embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (14)
1. A wireless multi-point omni-directional audio transmission method, which is characterized by being applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, wherein each omni-directional wireless audio device has the same preset broadcasting period, and each preset broadcasting period comprises at least one receiving period and at least one transmitting period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state, and when the omnidirectional wireless audio equipment is in the omnidirectional receiving and transmitting state, the following steps are executed in each preset broadcasting period:
receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
and broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
2. The wireless multi-point omni-directional audio transmission method according to claim 1, wherein if a first signal received by the omni-directional wireless audio device carries a maximum non-overlapping period number n in the preset broadcast period, n is a positive integer, and a maximum receiving duration of the first signal is equal to a maximum broadcast duration of the second signal and the receiving period is equal to the transmitting period, a maximum receiving duration of the first signal < = a length of the receiving period < = a length of the preset broadcast period/n.
3. The wireless multipoint omni-directional audio transmission method according to claim 1, wherein if the second signal of the omni-directional wireless audio device carries a maximum non-overlapping period number n in the preset broadcast period, where n is a positive integer, the omni-directional wireless audio device receives at most n-1 first signals sent by other omni-directional wireless audio devices in the preset broadcast period.
4. The wireless multi-point omni-directional audio transmission method according to claim 1, wherein the operation state of the omni-directional wireless audio device further comprises a unidirectional reception state;
when the working state of the omnidirectional wireless audio equipment is switched from the omnidirectional receiving and transmitting state to the unidirectional receiving state, the method comprises the following steps:
stopping broadcasting the second signal in the preset broadcasting period;
when the working state of the omnidirectional wireless audio equipment is switched from a unidirectional receiving state to an omnidirectional receiving and transmitting state, the method comprises the following steps:
and recovering the second signal to be broadcast outwards in the preset broadcast period, wherein the maximum broadcast duration of the second signal is not more than the length of the transmission period.
5. The wireless multi-point omni-directional audio transmission method according to claim 4, further comprising, after the broadcasting of the second signal is stopped in the preset broadcasting period:
And receiving first signals transmitted by other omni-directional wireless audio devices in the transmission period.
6. The wireless multi-point omni-directional audio transmission method according to claim 1, wherein when the second signal is a broadcast isochronous stream, the externally broadcasting the second signal comprises:
determining a target anchor point of a second broadcast isochronous group BIG link of the second signal according to a local clock; the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
7. The wireless multi-point omni-directional audio transmission method according to claim 1, wherein when the first signal and the second signal are broadcast isochronous streams, the externally broadcasting the second signal comprises:
calculating a target anchor point of a second broadcast isochronous group BIG link of the second signal according to the received anchor point of the first broadcast isochronous group BIG link of the first signal;
the second signal is broadcast over the second broadcast isochronous group BIG link starting from the target anchor.
8. The wireless multi-point omni-directional audio transmission method of claim 1, wherein the first signal and the second signal are received or transmitted over a bluetooth low energy broadcast isochronous stream protocol link.
9. The wireless multi-point omni-directional audio transmission method according to claim 1, wherein when the wireless multi-point omni-directional audio system further comprises at least one unidirectional wireless audio device, a preset receiving period of the unidirectional wireless audio device is identical to a preset broadcasting period of the omni-directional wireless audio device, and the unidirectional wireless audio device performs the following steps in each preset receiving period:
a first signal transmitted by at least one omni-directional wireless audio device is received.
10. An omni-directional wireless audio device, characterized by being applied to a wireless multi-point omni-directional audio system comprising at least 2 omni-directional wireless audio devices, each having the same preset broadcast period, each preset broadcast period comprising at least one receive period and at least one transmit period; the transmission time periods of each omnidirectional wireless audio device are not overlapped with each other; the working state of the omnidirectional wireless audio equipment comprises an omnidirectional receiving and transmitting state;
the omnidirectional wireless audio equipment comprises a transceiver module, wherein the transceiver module is used for executing the following steps in each preset broadcasting period when in an omnidirectional transceiver state:
receiving a first signal sent by at least one other omnidirectional wireless audio device, wherein the maximum receiving duration of the first signal is not more than the length of the receiving period;
And broadcasting a second signal outwards, wherein the maximum broadcasting duration of the second signal is not more than the length of the transmission period.
11. A wireless multi-point omni-directional audio system, comprising: at least 2 omni-directional wireless audio devices as in claim 10.
12. The wireless multi-point, omni-directional audio system of claim 11, further comprising: the one-way wireless audio device is used for receiving a first signal sent by the at least one omni-directional wireless audio device in each preset receiving period.
13. An electronic device, comprising: a memory, a processor, and a program stored on the memory and executable on the processor; the method according to any one of claims 1 to 9, characterized in that the steps in the wireless multi-point omni-directional audio transmission method are implemented when the processor executes the program.
14. A readable storage medium having stored thereon a program, which when executed by a processor, implements the steps of the wireless multi-point omni-directional audio transmission method according to any of claims 1 to 9.
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