WO2022134716A1 - 蓝牙数据包的广播方法、装置、终端及存储介质 - Google Patents

蓝牙数据包的广播方法、装置、终端及存储介质 Download PDF

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Publication number
WO2022134716A1
WO2022134716A1 PCT/CN2021/121442 CN2021121442W WO2022134716A1 WO 2022134716 A1 WO2022134716 A1 WO 2022134716A1 CN 2021121442 W CN2021121442 W CN 2021121442W WO 2022134716 A1 WO2022134716 A1 WO 2022134716A1
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Prior art keywords
window
data packet
bluetooth data
channel
broadcast
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PCT/CN2021/121442
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English (en)
French (fr)
Inventor
许超杰
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Oppo广东移动通信有限公司
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Publication of WO2022134716A1 publication Critical patent/WO2022134716A1/zh

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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
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of Bluetooth technology, and in particular, to a method, device, terminal, and storage medium for broadcasting a Bluetooth data packet.
  • Bluetooth (Bluetooth, BT) technology is a short-range wireless communication protocol, and is applied to a scenario where two devices that are close in distance communicate with each other. Among them, broadcasting the Bluetooth data packet scene through the Bluetooth technology is a relatively common scene.
  • the transmitter and the receiver participate in the broadcasting process of the Bluetooth data packet.
  • the Bluetooth protocol is designed to repeat several times within a broadcast cycle.
  • Embodiments of the present application provide a method, device, terminal, and storage medium for broadcasting a Bluetooth data packet.
  • the technical solution is as follows:
  • a method for broadcasting a Bluetooth data packet comprising:
  • the receive window is used to detect channel interference of the transmit channel
  • a device for broadcasting a Bluetooth data packet comprising:
  • a receiving module configured to set a receiving window on at least one side of the transmitting window, the receiving window is used to detect channel interference of the transmitting channel
  • a determining module configured to determine whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result of the receiving window.
  • a terminal includes a processor and a memory, the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the method as described in the present application
  • a method of broadcasting a Bluetooth packet provided by various aspects.
  • a computer-readable storage medium having stored therein at least one instruction, the instruction being loaded and executed by a processor to implement Bluetooth data as provided in various aspects of the present application
  • the broadcast method of the packet is provided.
  • a computer program product comprising computer instructions stored in a computer-readable storage medium.
  • the processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the methods provided in the various optional implementations of the above-mentioned Bluetooth data packet sending aspect.
  • FIG. 1 is a structural block diagram of a terminal provided by an exemplary embodiment of the present application.
  • FIG. 2 is a schematic diagram of an environment of Bluetooth data packet broadcasting provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a method for broadcasting a Bluetooth data packet provided by an exemplary embodiment of the present application
  • FIG. 4 is a schematic diagram of channel usage during broadcasting of a Bluetooth data packet provided based on the embodiment shown in FIG. 3;
  • FIG. 5 is a schematic diagram of a transmission window in a single broadcast period provided based on the embodiment shown in FIG. 4;
  • FIG. 6 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • FIG. 7 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • FIG. 8 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • FIG. 9 is a schematic diagram of setting of a sending window provided by an embodiment of the present application.
  • FIG. 10 is a structural block diagram of a device for broadcasting a Bluetooth data packet provided by an exemplary embodiment of the present application.
  • a plurality means two or more.
  • “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the present application provides a method for broadcasting Bluetooth data packets, wherein the method includes: setting a receiving window on at least one side of a sending window, where the receiving window is used to detect channel interference of a sending channel; and, based on the receiving The detection result of the window determines whether the Bluetooth data packet is successfully broadcast in the sending window.
  • the receiving window includes a first receiving window located on a side earlier than the sending window.
  • the method further includes: detecting a first channel signal strength of the transmission channel in the first receiving window, where the first channel signal strength is used to indicate a channel interference degree of the transmission channel; and, The first channel signal strength is determined as the detection result.
  • the determining whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result of the receiving window includes: in response to the signal strength of the first channel being less than a first threshold, determining the The sending window has the conditions to successfully broadcast the Bluetooth data packet.
  • the determining whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result of the receiving window includes: in response to the first overflow energy being greater than the second threshold, determining that the sending window has A condition for successfully broadcasting the bluetooth data packet, the first overflow energy is the difference between the transmit power for sending the bluetooth data packet and the signal strength of the first channel.
  • the method further includes: in response to the signal strength of the first channel being greater than or equal to the first threshold, giving up broadcasting the Bluetooth data packet in the sending window.
  • the method further includes: in response to the first overflow energy being less than or equal to the second threshold, increasing the transmit power for sending the Bluetooth data packet by a first increment as a new transmit power; The transmit power broadcasts the bluetooth packet in the transmit window.
  • the receiving window includes a second receiving window located on a side later than the sending window.
  • the method further includes: detecting a second channel signal strength of the transmission channel in the second receiving window, where the second channel signal strength is used to indicate a channel interference degree of the transmission channel; and, The second channel signal strength is determined as the detection result.
  • the determining, based on the detection result, whether the Bluetooth data packet is successfully broadcast in the sending window includes: in response to the signal strength of the second channel being less than a third threshold, determining that the sending window has been successfully broadcasted the bluetooth packet.
  • the determining, based on the detection result, whether the Bluetooth data packet is successfully broadcast in the sending window includes: in response to the second overflow energy being greater than a fourth threshold, determining that the sending window has successfully broadcast the Bluetooth data packet.
  • the second overflow energy is the difference between the transmit power for sending the Bluetooth data packet and the signal strength of the second channel.
  • the receiving window includes a first receiving window located on a side earlier than the sending window and a second receiving window located on a side later than the sending window.
  • the method further includes: detecting a first channel signal strength of the transmission channel in a first receiving window; detecting a second channel signal strength of the transmitting channel in a second receiving window; The signal strength of a channel and the signal strength of the second channel are determined as the detection result.
  • the determining whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result includes: in response to the signal strength of the first channel being less than a first threshold, and the signal strength of the second channel If it is less than the third threshold, it is determined that the Bluetooth data packet is successfully broadcast in the sending window.
  • the determining whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result includes: in response to the first overflow energy being greater than the second threshold, and the second overflow energy being greater than the fourth threshold, determining The bluetooth data packet is successfully broadcast in the sending window, the first overflow energy is the difference between the transmit power for sending the bluetooth data packet and the signal strength of the first channel, and the second overflow energy is the transmission power of the bluetooth data packet. The difference between the transmit power of the Bluetooth data packet and the signal strength of the second channel.
  • the method further includes: canceling the broadcast of the Bluetooth data packet in a subsequent sending window within the broadcast period; or, in the broadcast period The bluetooth packet is broadcasted less in subsequent transmit windows.
  • the sending window is the first sending window in the broadcast cycle.
  • the embodiment of the present application can set a new receiving window on at least one side of the original transmitting window of the transmitter, detect the channel interference of the transmitting channel through the receiving window, and determine whether the Bluetooth data is successfully broadcast in the transmitting window based on the detection result. Bag.
  • the transmitter has the ability to predict whether the Bluetooth broadcast packet is successfully sent through the method provided by the present application, that is, the embodiment of the present application can change the situation of retransmitting the same fixed number of data packets in the existing Bluetooth protocol, Therefore, it is determined whether to reduce the number of data packet transmissions in the remaining transmission period in the current broadcast cycle, thereby reducing the terminal's occupation of the air interface bandwidth and reducing the terminal's own power consumption under the premise of a higher transmission success rate.
  • Classic Bluetooth protocol It is an open specification for wireless data and voice communication. In the application process, the classic Bluetooth protocol is based on low-cost short-range wireless connections to establish a communication environment for fixed and mobile devices. In the frequency band of the classic Bluetooth protocol, the ISM (Industrial Scientific Medical) band from 2.4GHz to 2.485GHz is included.
  • ISM International Scientific Medical
  • the number of channels used by the classic Bluetooth protocol is 79.
  • Bluetooth Low Energy (BLE) protocol Compared with the classic Bluetooth protocol, the Bluetooth low energy protocol can significantly reduce power consumption and cost while maintaining the same communication range.
  • 40 channels are specified. Among the 40 channels, 3 broadcast channels and 37 data channels are included. It should be noted that, in another naming convention, the channel of the Bluetooth low energy protocol is also called a channel.
  • the Bluetooth low energy protocol cannot be backward compatible with the original classic Bluetooth protocol.
  • the radio frequency used by the Bluetooth low energy protocol and the classic Bluetooth protocol is both 2.4GHz. Therefore, the Bluetooth low energy protocol and the classic Bluetooth protocol can share one antenna.
  • the method for broadcasting Bluetooth data packets shown in the embodiments of the present application can be applied to a terminal, where the terminal has an antenna module and can send Bluetooth data packets based on BT or BLE.
  • Terminals can include mobile phones, tablet computers, laptop computers, desktop computers, all-in-one computers, servers, workstations, TVs, smart glasses, smart watches, digital cameras, MP4 playback terminals, MP5 playback terminals, learning machines, point readers, Electronic paper books, electronic dictionaries, vehicle-mounted terminals, virtual reality (Virtual Reality, VR) playback terminals or augmented reality (Augmented Reality, AR) playback terminals, etc.
  • FIG. 1 is a structural block diagram of a terminal provided by an exemplary embodiment of the present application.
  • the terminal includes a processor 120, a memory 140, and an antenna module 160.
  • the memory 140 stores at least one instruction, and the instruction is loaded and executed by the processor 120 to implement the various The method for broadcasting a Bluetooth data packet according to the method embodiment.
  • the antenna module 160 is used for sending a Bluetooth data packet, wherein the Bluetooth data packet is a data packet sent by the terminal according to a Bluetooth protocol such as the BT protocol or the BLE protocol.
  • the terminal 100 is an electronic device having the function of broadcasting Bluetooth data packets.
  • a receiving window is set on at least one side of the sending window, and the receiving window is used to detect channel interference of the sending channel; and, based on the detection result of the receiving window, it is determined whether the Bluetooth data packet is successfully broadcast in the sending window .
  • Processor 120 may include one or more processing cores.
  • the processor 120 uses various interfaces and lines to connect various parts in the entire terminal 100, and executes the terminal by running or executing the instructions, programs, code sets or instruction sets stored in the memory 140, and calling the data stored in the memory 140. 100 various functions and processing data.
  • the processor 120 may adopt at least one of digital signal processing (Digital Signal Processing, DSP), field-programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA).
  • DSP Digital Signal Processing
  • FPGA Field-Programmable Gate Array
  • PLA programmable logic array
  • a hardware form is implemented.
  • the processor 120 may integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU), a modem, and the like.
  • the CPU mainly handles the operating system, user interface, and application programs; the GPU is used to render and draw the content that needs to be displayed on the display screen; the modem is used to handle wireless communication. It can be understood that, the above-mentioned modem may not be integrated into the processor 120, but is implemented by a single chip.
  • the memory 140 may include random access memory (Random Access Memory, RAM), or may include read-only memory (Read-Only Memory, ROM).
  • the memory 140 includes a non-transitory computer-readable storage medium.
  • Memory 140 may be used to store instructions, programs, codes, sets of codes, or sets of instructions.
  • the memory 140 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), Instructions, etc., used to implement the following method embodiments; the storage data area can store data and the like involved in the following method embodiments.
  • the antenna module 160 may be either a single antenna or a module including multiple antennas, which is not limited in this embodiment of the present application.
  • the data packets sent through the BT protocol and the BLE protocol can share the same antenna.
  • the terminal can control, through the processor 120, the respective time occupied by the Bluetooth data packets sent based on the BT protocol or the BLE protocol.
  • FIG. 2 is a schematic diagram of an environment of Bluetooth data packet broadcasting provided by an embodiment of the present application.
  • a broadcast terminal 210 a first receiving terminal (BT Device Receiver) or (BLE Device Receiver) 221, a second receiving terminal 222, a third receiving terminal 223 and a fourth receiving terminal 224 are included.
  • the broadcast terminal may be either a common broadcast terminal, a classic Bluetooth broadcast terminal (BT Device Broadcaster) or a low-power Bluetooth broadcast terminal (BLE Device Broadcaster).
  • the structure shown in FIG. 2 may also be referred to as a Bluetooth broadcast topology, wherein the direction of the arrow is used to indicate the transmission direction of the Bluetooth data packet.
  • FIG. 2 is only an exemplary illustration, and the present application does not specifically limit the number of receiving terminals.
  • the broadcast terminal 210 may be any terminal device having an antenna module and supporting the BT protocol, the BLE protocol or other Bluetooth protocols.
  • the first receiving terminal to the fourth receiving terminal may be terminal devices of the same type, for example, the first receiving terminal to the fourth receiving terminal are all Bluetooth speakers.
  • the first receiving terminal to the fourth receiving terminal may also be different types of terminal devices.
  • the first receiving terminal is a smart phone
  • the second receiving terminal is a smart watch
  • the third receiving terminal is a Bluetooth speaker
  • the fourth receiving terminal is a smart TV.
  • the broadcast (Broadcast) in the standard Bluetooth technology provides the probability of sending arrival through redundant retransmission.
  • the method of redundant retransmission belongs to best effort service.
  • the LE ISO function introduced in Bluetooth 5.2, defines broadcast-based isochronous data transfer.
  • the isochronous data transmission can be used for voice data transmission or audio data transmission, thereby providing a voice sharing service or an audio sharing service.
  • a retransmission mechanism is defined for isochronous data transmission.
  • the retransmission mechanism can retransmit the data packets to be transmitted multiple times.
  • the retransmitted data packet may include not only service data such as voice data or audio data, but also control data.
  • the number of retransmissions of the data packets sent by the terminal in a single broadcast cycle is fixed.
  • a single broadcast cycle is divided into n periods, and a Bluetooth data packet is sent once in each period.
  • the Bluetooth data packets sent in the first sending window of a single broadcast cycle can be regarded as new data packets.
  • From the second sending window to the nth sending window is regarded as a sending window for retransmitting the Bluetooth data packet, and the Bluetooth data packet is retransmitted n-1 times in total.
  • the broadcasting terminal will retransmit the Bluetooth data packet according to a predetermined number of times n-1. That is, regardless of whether the Bluetooth data packet has been successfully received by the receiving terminal, the broadcasting terminal will retransmit the Bluetooth data packet n-1 times, thereby increasing the air interface bandwidth and bringing greater power consumption to the broadcasting terminal.
  • the present application provides a method that enables the broadcasting terminal to independently determine whether the Bluetooth data packet is sent successfully, so as to reduce the amount of data sent in the remaining sending period of a single broadcasting cycle when the Bluetooth data packet is more likely to be successfully sent.
  • the number of Bluetooth data packets please refer to the introduction in Figure 3 for details.
  • FIG. 3 is a flowchart of a method for broadcasting a Bluetooth data packet provided by an exemplary embodiment of the present application.
  • the method for broadcasting a Bluetooth data packet can be applied to the broadcasting terminal shown in FIG. 2 above.
  • the broadcasting method of this bluetooth data packet includes:
  • Step 310 Set a receive window on at least one side of the transmit window, and the receive window is used to detect channel interference of the transmit channel.
  • the broadcast terminal can set the reception window on at least one side of the transmission window.
  • the sending at least one side includes a side whose time is earlier than the sending window, and a side whose time is later than the sending window.
  • the broadcast terminal may include either a receiving window on one side, or a side earlier than the sending window and a side later than the sending window.
  • the broadcast terminal can detect the channel interference of the transmission channel in the receiving window. It should be noted that the broadcast terminal will receive the signal from the transmission channel after its own system time reaches the reception window, so as to detect the signal interference of the transmission channel.
  • the broadcast terminal can repeatedly transmit the Bluetooth data packet in a single broadcast period.
  • a single broadcast period is divided into n transmission windows.
  • the time intervals between each sending window are equal.
  • the interval time between each sending window is unequal.
  • the sending window indicated in the embodiment of the present application may be the first sending window in the broadcast period.
  • the sending window may also be set to any sending window other than the last sending window in the broadcast cycle.
  • FIG. 4 is a schematic diagram of channel usage during broadcasting of a Bluetooth data packet according to the embodiment shown in FIG. 3 .
  • the number of Bluetooth channels used by the broadcasting terminal is 5 as an example.
  • the five channels that can be used to send Bluetooth data packets are the first channel 410 , the second channel 420 , the third channel 430 , the fourth channel 440 and the fifth channel 450 .
  • the broadcasting terminal in the first broadcast period t1, the broadcasting terminal carries the first Bluetooth data packet 4a through the second channel 420, and broadcasts the first Bluetooth data packet 4a.
  • the broadcasting terminal In the second broadcast period t2, the broadcasting terminal carries the second Bluetooth data packet 4b through the fourth channel 440, and broadcasts the second Bluetooth data packet 4b.
  • the broadcasting terminal In the third broadcast period t3, the broadcasting terminal carries the third Bluetooth data packet 4c through the first channel 410, and broadcasts the third Bluetooth data packet 4c.
  • the broadcasting terminal In the fourth broadcast period t4, the broadcasting terminal carries the fourth Bluetooth data packet 4d through the second channel 420, and broadcasts the fourth Bluetooth data packet 4d.
  • the Bluetooth channel used by the broadcast terminal is fixed.
  • the Bluetooth channel used by the broadcast terminal is fixed as the fourth channel 440.
  • the Bluetooth protocol specifies that a broadcast terminal can use different Bluetooth channels within a single broadcast period
  • the broadcast terminal can specify the corresponding Bluetooth channel for each transmission window based on the transmission window in a single broadcast period.
  • FIG. 5 is a schematic diagram of a transmission window in a single broadcast period provided based on the embodiment shown in FIG. 4 .
  • the first broadcast period 5A is comprised of 8 transmission windows.
  • the eight sending windows respectively include a first sending window 510, a second sending window 520, a third sending window 530, a fourth sending window 540, a fifth sending window 550, a sixth sending window 560, a seventh sending window 570 and an eighth sending window.
  • Send window 580 is a schematic diagram of a transmission window in a single broadcast period provided based on the embodiment shown in FIG. 4 .
  • the first broadcast period 5A is comprised of 8 transmission windows.
  • the eight sending windows respectively include a first sending window 510, a second sending window 520, a third sending window 530, a fourth sending window 540, a fifth sending window 550, a sixth sending window 560, a seventh sending window 570 and an eighth sending window.
  • Send window 580 send window 580.
  • Step 320 based on the detection result of the receiving window, determine whether the Bluetooth data packet is successfully broadcast in the sending window.
  • the broadcasting terminal can determine whether to broadcast the Bluetooth data packet in the sending window based on the detection result of the receiving window.
  • the broadcasting terminal predicts that the Bluetooth data packet can be successfully broadcasted before the sending window, the broadcasting terminal broadcasts the Bluetooth data packet in the sending window. On the contrary, if the broadcasting terminal predicts that it cannot successfully broadcast the Bluetooth data packet before the sending window, the broadcasting terminal may no longer broadcast the Bluetooth data packet in the sending window.
  • the broadcasting terminal can reduce or cancel the retransmission of the Bluetooth data packet in the remaining sending window in this broadcasting cycle if the broadcasting terminal detects that the sending window has successfully broadcast the Bluetooth data packet after the sending window.
  • the broadcasting terminal can continue to retransmit the Bluetooth data packet according to the originally set retransmission times in the subsequent sending window in this broadcasting cycle.
  • the embodiment of the present application can set a new receiving window on at least one side of the original sending window of the transmitter, detect the channel interference of the sending channel through the receiving window, and determine whether the bluetooth is successfully broadcast in the sending window based on the detection result. data pack.
  • the transmitter has the ability to predict whether the Bluetooth broadcast packet is successfully sent through the method provided by the present application, that is, the embodiment of the present application can change the situation of retransmitting the same fixed number of data packets in the existing Bluetooth protocol, Therefore, it is determined whether to reduce the number of data packet transmissions in the remaining transmission period in the current broadcast cycle, thereby reducing the terminal's occupation of the air interface bandwidth and reducing the terminal's own power consumption under the premise of a higher transmission success rate.
  • the broadcasting terminal can also identify the scenarios in which the Bluetooth data packets are successfully sent in different scenarios through different solutions, thereby reducing the bandwidth to the air interface under the condition of ensuring the successful sending of the Bluetooth data packets. occupancy and reduce the power consumption of the broadcast terminal itself, please refer to the following embodiments.
  • FIG. 6 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • the receive window includes a first receive window located on a side earlier than the transmit window.
  • the method for broadcasting a Bluetooth data packet can be applied to the broadcasting terminal shown above.
  • the broadcasting method of this bluetooth data packet includes:
  • Step 611 Set the first receiving window on the side earlier than the sending window.
  • Step 612 Detect the first channel signal strength of the transmission channel in the first receiving window.
  • the first channel signal strength is used to indicate the channel interference degree of the transmission channel.
  • Step 613 Determine the signal strength of the first channel as the detection result.
  • the broadcast terminal detects the first channel signal strength of the transmission channel in the first reception window earlier than the transmission window.
  • the first channel signal strength is used to indicate the channel interference degree of the transmission channel.
  • the signal strength of the first channel may be represented by function_pass_or_fail1(RSSIpre).
  • Step 614 in response to the signal strength of the first channel being less than the first threshold, it is determined that the sending window has the conditions for successfully broadcasting the Bluetooth data packet.
  • the first threshold will be preset in the broadcast terminal.
  • the first threshold may be a value summed up by a technician through several practices or abnormal logs.
  • the first threshold may be a value such as -60dBm, -55dBm, or -62dBm, and the embodiment of the present application does not limit the specific value of the first threshold.
  • the broadcasting terminal can determine that the sending window has the conditions for successfully broadcasting the Bluetooth data packet.
  • Step 615 in response to the signal strength of the first channel being greater than or equal to the first threshold, give up broadcasting the Bluetooth data packet in the sending window.
  • the signal strength of the first channel when the signal strength of the first channel is greater than or equal to the first threshold, it indicates that other signals are already being transmitted in the sending window, or the channel itself has relatively large noise. Therefore, in this embodiment of the present application, when the signal strength of the first channel is greater than or equal to the first threshold, broadcasting the Bluetooth data packet in the sending window is abandoned.
  • Step 616 in response to the first overflow energy being greater than the second threshold, determine that the sending window has the conditions for successfully broadcasting the Bluetooth data packet.
  • the first overflow energy is the difference between the transmit power for sending the Bluetooth data packet and the signal strength of the first channel.
  • the method for setting the second threshold may also be based on a value summed up by a technician through several practices or abnormal logs.
  • the second threshold may be a value such as 6 dBm, 5 dBm, or 7 dBm, and the embodiment of the present application does not limit the specific value of the second threshold.
  • the embodiment of the present application can also acquire the transmit power for sending the Bluetooth data packet.
  • the transmission power of the Bluetooth data packet is preset data.
  • the broadcasting terminal can know the transmit power for sending the Bluetooth data packet through preset data when the Bluetooth data packet has not been broadcast.
  • the broadcast terminal can determine the first overflow energy, where the first overflow energy is equal to the difference between the transmission power of the Bluetooth data packet and the signal strength of the first channel. For example, the transmit power of the Bluetooth data packet is -50dBm, the signal strength of the first channel is -60dBm, and the first overflow energy is 10dBm. If the second threshold is 5dBm, the first overflow energy is greater than the second threshold, and the broadcasting terminal determines that the sending window has the conditions for successfully broadcasting the Bluetooth data packet.
  • the input parameter combination used by the broadcast terminal may be function_pass_or_fail4(RSSIpre, TXPower).
  • RSSIpre is used to represent the signal strength of the first channel
  • TXPower is used to represent the transmit power of the Bluetooth data packet.
  • Step 617 in response to the first overflow energy being less than or equal to the second threshold, increase the transmit power of the bluetooth data packet by a first increment as a new transmit power; broadcast the bluetooth data packet in the sending window with the new transmit power.
  • the transmit power of the Bluetooth data packet is -58dBm
  • the signal strength of the first channel is -60dBm
  • the first overflow energy is 2dBm.
  • the second threshold is 5dBm
  • the first overflow energy is less than the second threshold, and the broadcast terminal will increase the transmit power of the data packet by the first increment.
  • the first increment is 5dBm
  • the new transmit power is -53dBm
  • the difference between the new transmit power and the signal strength of the first channel is 7dBm, which is greater than 5dBm of the second threshold, so that the broadcasting terminal uses the new transmit power - 53dBm broadcasts bluetooth packets in the send window.
  • the first transmit power used by the broadcast terminal to transmit each Bluetooth data packet is the same.
  • the broadcast terminal will assign different values to the first transmission power for each transmission of the Bluetooth data packet.
  • Table 1 shows the setting values of the respective first transmission powers in 8 transmission windows in one broadcast period.
  • the broadcast terminal sets the first transmit power of each time period in the broadcast cycle to -45dBm. Based on this setting, the broadcast terminal can calculate the overflow energy value for sending the Bluetooth data packet in advance in the first receiving window.
  • Table 2 shows another set value of the respective first transmission powers in the 8 transmission windows in one broadcast period.
  • the broadcast terminal shall set an independent first transmission power for each time period in the broadcast cycle according to the preset transmission strategy.
  • the first transmit power may be in a trend of gradually decreasing power on the time axis, as shown in the data provided in Table 2.
  • the first transmit power may also be in a trend of gradually increasing power on the time axis. That is, by setting different first transmit powers for each time period, the broadcast terminal can avoid the situation that multiple transmissions still fail as much as possible when the environmental noise is relatively constant.
  • the broadcast terminal will calculate the average channel signal strength according to the channel signal strength of the preceding idle period and the channel signal strength of the subsequent idle period.
  • the broadcast terminal will obtain the ratio of the average channel signal strength to the first threshold, and obtain the corresponding first reduction value p according to the ratio.
  • the input parameter combination used by the broadcast terminal may be function_pass_or_fail3(RSSIpre, RSSIpost), where RSSIpre is used to indicate the channel signal strength of the Bluetooth channel in the pre-idle period, and RSSIpost is used to indicate that the Bluetooth channel is in the post Channel signal strength during idle periods.
  • Step 618 cancel the broadcast of the Bluetooth data packet in the subsequent sending window within the broadcast period.
  • Step 619 Reduce the broadcast Bluetooth data packets in the subsequent sending windows in the broadcast period.
  • this embodiment can predict whether a Bluetooth data packet can be successfully sent in the sending window according to the signal strength of the first channel of the receiving window itself in a scenario where the receiving window is set before the sending window. Or, at the same time, according to the signal strength of the first channel of the receiving window itself and the transmission power of sending the bluetooth data packet, it is predicted whether the bluetooth data packet can be successfully sent in the sending window. Therefore, this embodiment can predict that the Bluetooth data packet can be successfully broadcasted in the sending window before the Bluetooth data packet is actually broadcasted. In the case of a high probability of success, the terminal broadcasts the Bluetooth data packet in the sending window, otherwise it gives up broadcasting the Bluetooth data packet in the sending window, which improves the channel utilization efficiency and saves unnecessary power consumption.
  • FIG. 7 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • the receive window includes a second receive window located on a side later than the transmit window.
  • the method for broadcasting a Bluetooth data packet can be applied to the broadcasting terminal shown above.
  • the broadcasting method of this bluetooth data packet includes:
  • Step 711 Set a second receiving window on the side later than the sending window.
  • Step 712 Detect the signal strength of the second channel of the transmission channel in the second receiving window.
  • the second channel signal strength is used to indicate the channel interference degree of the transmission channel.
  • Step 713 Determine the signal strength of the second channel as the detection result.
  • the broadcast terminal detects the signal strength of the second channel of the transmission channel in the second reception window that is later than the transmission window.
  • the second channel signal strength is used to indicate the channel interference degree of the transmission channel.
  • the signal strength of the second channel may be represented by a parameter value RSSIpost, and the function for calculating the signal strength of the second channel may be represented by function_pass_or_fail2(RSSIpost).
  • Step 714 in response to the signal strength of the second channel being less than the third threshold, determine that the sending window has successfully broadcast the Bluetooth data packet.
  • a third threshold will be preset in the broadcast terminal.
  • the third threshold may be a value summed up by the technician through several practices or abnormal logs.
  • the third threshold may be a value such as -58dBm, -57dBm, or -56dBm, and the embodiment of the present application does not limit the specific value of the third threshold.
  • the broadcasting terminal can determine that the bluetooth data packet has been successfully broadcasted in the sending window when the signal strength of the second channel is less than the third threshold.
  • Step 715 in response to the second overflow energy being greater than the fourth threshold, determine that the sending window has successfully broadcast the Bluetooth data packet.
  • the second overflow energy is the difference between the transmission power of sending the Bluetooth data packet and the signal strength of the second channel.
  • the setting method of the fourth threshold may also be based on the value summed up by the technician through several practices or abnormal logs.
  • the fourth threshold may be a value such as 4 dBm, 5 dBm, or 6 dBm, and the embodiment of the present application does not limit the specific value of the fourth threshold.
  • the embodiment of the present application can also acquire the transmit power for sending the Bluetooth data packet.
  • the transmit power is the measured transmit power when the bluetooth data packet is sent by the sending window.
  • the broadcast terminal can determine the second overflow energy, where the second overflow energy is equal to the difference between the transmission power of the Bluetooth data packet and the signal strength of the second channel. For example, the transmit power of the Bluetooth data packet is -52dBm, the signal strength of the second channel is -65dBm, and the second overflow energy is 13dBm. If the second threshold is 5dBm, the second overflow energy is greater than the second threshold, and the broadcasting terminal determines that the sending window has the conditions for successfully broadcasting the Bluetooth data packet.
  • the function used by the broadcast terminal may be function_pass_or_fail5(RSSIpost, TXPower).
  • RSSIpost is used to indicate the signal strength of the second channel
  • TXPower is used to indicate the measured transmit power of the Bluetooth data packet.
  • Step 716 cancel the broadcast of the Bluetooth data packet in the subsequent sending window in the broadcast period.
  • Step 717 Reduce the broadcast Bluetooth data packets in the subsequent sending windows in the broadcast period.
  • the embodiment of the present application can determine whether a Bluetooth data packet sent through the sending window is successfully sent according to the signal strength of the second channel of the receiving window itself in a scenario where the receiving window is set after the sending window. Or, at the same time, according to the second channel signal strength of the receiving window itself and the measured transmit power of the bluetooth data packet sent, it is judged whether the bluetooth data packet that has been sent in the sending window is successfully broadcast. Therefore, in this embodiment, after the Bluetooth data packet is broadcast, it can be determined whether the Bluetooth data packet is successfully broadcast. After judging that the Bluetooth data packet has been successfully broadcast, reduce or cancel the broadcast of the Bluetooth broadcast packet in the subsequent sending window in the broadcast period, and reduce the power consumption and energy consumption for broadcasting while ensuring a high success rate of the broadcast Bluetooth broadcast packet. bandwidth.
  • FIG. 8 is a flowchart of a method for broadcasting a Bluetooth data packet provided by another exemplary embodiment of the present application.
  • the receive window includes two receive windows, one is the first receive window on the side earlier than the transmit window, and the other is the second receive window on the side later than the transmit window receive window.
  • the method for broadcasting a Bluetooth data packet can be applied to the broadcasting terminal shown above.
  • the broadcast method of the Bluetooth data packet includes:
  • Step 811 Set the first receiving window on the side earlier than the sending window.
  • Step 812 Detect the first channel signal strength of the transmission channel in the first receiving window.
  • Step 813 Set a second receiving window on the side later than the sending window.
  • Step 814 Detect the signal strength of the second channel of the transmission channel in the second receiving window.
  • Step 815 Determine the signal strength of the first channel and the signal strength of the second channel as detection results.
  • Step 816 in response to the signal strength of the first channel being less than the first threshold and the signal strength of the second channel being less than the third threshold, it is determined that the Bluetooth data packet is successfully broadcast in the transmission window.
  • first receiving window the second receiving window
  • first channel signal strength the second channel signal strength shown in steps 811 to 815
  • steps 811 to 815 may refer to the embodiment shown in FIG. 6 or FIG. 7 .
  • the implementation process in will not be repeated here.
  • the broadcast terminal uses the values of the signal strength of the first channel and the signal strength of the second channel to judge whether the Bluetooth data packet is successfully broadcast. Broadly speaking, the broadcasting terminal will determine that the Bluetooth data packet is successfully broadcast when the channel interference before the transmission window is low, and when the channel interference after the transmission window is low.
  • Step 817 in response to the first overflow energy being greater than the second threshold, and the second overflow energy being greater than the fourth threshold, determine that the Bluetooth data packet is successfully broadcast in the sending window.
  • the first overflow energy is the difference between the transmit power of sending the Bluetooth data packet and the signal strength of the first channel
  • the second overflow energy is the difference between the transmit power of the Bluetooth data packet and the signal strength of the second channel.
  • the broadcast terminal uses the first overflow energy and the second overflow energy to determine whether the Bluetooth data packet is successfully broadcast.
  • the broadcast terminal will send a Bluetooth data packet with a higher transmit power than the channel interference received in the first receive window, and the broadcast terminal will send a Bluetooth data packet with a transmit power higher than that received in the second receive window.
  • the value of the received channel interference is high, it is determined that the Bluetooth data packet is successfully broadcast.
  • Step 818 cancel the broadcast of the Bluetooth data packet in the subsequent sending window in the broadcast period.
  • Step 819 Reduce the broadcast Bluetooth data packets in the subsequent sending windows in the broadcast period.
  • FIG. 9 is a schematic diagram of setting of a sending window provided by an embodiment of the present application.
  • the broadcast period 9A includes 8 sending windows, which are the first sending window 910, the second sending window 920, the third sending window 930, the fourth sending window 940, the fifth sending window 950, and the sixth sending window.
  • Window 960 , seventh send window 970 and eighth send window 980 Taking the second sending window 920 as an example, the present application can set the first receiving window 921 on the side earlier than the second sending window 920 , and set the second receiving window 922 on the side later than the second sending window 920 .
  • the embodiments of the present application can simultaneously determine whether the Bluetooth data packets sent in the sending window are successfully broadcasted according to the strength of the channel signals tested in the first receiving window and the second receiving window.
  • the present application can also combine the signal strength of the first channel, the signal strength of the second channel and the transmission power of the Bluetooth broadcast packet to comprehensively determine whether the Bluetooth data packet sent in the transmission window is successfully broadcast. After judging that the Bluetooth data packet has been successfully broadcast, reduce or cancel the broadcast of the Bluetooth broadcast packet in the subsequent sending window in the broadcast period, and reduce the power consumption and energy consumption for broadcasting while ensuring a high success rate of the broadcast Bluetooth broadcast packet. bandwidth.
  • FIG. 10 is a structural block diagram of a device for broadcasting a Bluetooth data packet provided by an exemplary embodiment of the present application.
  • the device for broadcasting the Bluetooth data packet can be implemented as all or a part of the terminal through software, hardware or a combination of the two.
  • the device includes:
  • a receiving module 1010 configured to set a receiving window on at least one side of the transmitting window, where the receiving window is used to detect channel interference of the transmitting channel;
  • the determining module 1020 is configured to determine whether the Bluetooth data packet is successfully broadcast in the sending window based on the detection result of the receiving window.
  • the receiving window involved in the apparatus includes a first receiving window located on a side earlier than the sending window.
  • the apparatus includes a first detection module and a first determination submodule
  • the first detection module is configured to detect a first channel signal of the transmission channel in the first reception window strength
  • the first channel signal strength is used to indicate the channel interference level of the transmission channel.
  • the first determination submodule is configured to determine the signal strength of the first channel as the detection result.
  • the determining module 1020 is configured to, in response to the signal strength of the first channel being less than a first threshold, determine that the sending window has a condition for successfully broadcasting the Bluetooth data packet.
  • the determining module 1020 is configured to, in response to the first overflow energy being greater than the second threshold, determine that the sending window has a condition for successfully broadcasting the Bluetooth data packet, and the first overflow energy is the difference between the transmit power for sending the Bluetooth data packet and the signal strength of the first channel.
  • the apparatus further includes a canceling module, the canceling module is configured to, in response to the signal strength of the first channel being greater than or equal to the first threshold, abort broadcasting the transmission in the sending window.
  • Bluetooth packets the canceling module is configured to, in response to the signal strength of the first channel being greater than or equal to the first threshold, abort broadcasting the transmission in the sending window.
  • the apparatus includes an update module and a sending module, the update module is configured to send the transmit power of the Bluetooth data packet in response to the first overflow energy being less than or equal to the second threshold The first increment is added as a new transmission power; the sending module is configured to broadcast the Bluetooth data packet in the transmission window with the new transmission power.
  • the receiving window involved in the apparatus includes a second receiving window located on a side later than the sending window.
  • the apparatus includes a second detection module and a second determination sub-module, the second detection module is configured to detect the second channel signal of the transmission channel in the second reception window strength, the second channel signal strength is used to indicate the channel interference degree of the transmission channel; the second determination submodule is used to determine the second channel signal strength as the detection result.
  • the determining module is configured to determine that the sending window has successfully broadcast the Bluetooth data packet in response to the signal strength of the second channel being less than a third threshold.
  • the determining module is configured to determine that the sending window has successfully broadcast the Bluetooth data packet in response to the signal strength of the second channel being less than a third threshold.
  • the determining module is configured to, in response to the second overflow energy being greater than a fourth threshold, determine that the sending window has successfully broadcast the Bluetooth data packet, and the second overflow energy is the transmission The difference between the transmit power of the Bluetooth data packet and the signal strength of the second channel.
  • the receiving window involved in the apparatus includes a first receiving window located on a side earlier than the sending window and a second receiving window located on a side later than the sending window .
  • the first detection module is configured to detect the first channel signal strength of the transmission channel in the first reception window; the second detection module is configured to The second channel signal strength of the transmission channel is detected in the second receiving window; the third determination sub-module is configured to determine the first channel signal strength and the second channel signal strength as the detection result.
  • the determining module is configured to, in response to the signal strength of the first channel being less than a first threshold, and the signal strength of the second channel being less than a third threshold, determine that the signal is in the sending window The bluetooth packet is successfully broadcast.
  • the determining module is configured to determine that the Bluetooth data is successfully broadcast in the sending window when the first overflow energy is greater than a second threshold and the second overflow energy is greater than a fourth threshold packet, the first overflow energy is the difference between the transmit power for sending the Bluetooth data packet and the signal strength of the first channel, and the second overflow energy is the transmit power for sending the Bluetooth data packet and the second channel. The difference in signal strength.
  • the apparatus includes an adjustment module, and the adjustment module is configured to cancel in a subsequent transmission window in the broadcast period when it is determined that the Bluetooth data packet is successfully broadcast in the transmission window Broadcast the bluetooth packet.
  • the adjustment module is configured to reduce the broadcast of the Bluetooth data packet in a subsequent transmission window within the broadcast period when it is determined that the Bluetooth data packet is successfully broadcast in the transmission window.
  • the sending window involved in the apparatus is the first sending window in the broadcast period.
  • the embodiment of the present application can set a new receiving window on at least one side of the original sending window of the transmitter, detect the channel interference of the sending channel through the receiving window, and determine whether the bluetooth is successfully broadcast in the sending window based on the detection result. data pack.
  • the transmitter has the ability to predict whether the Bluetooth broadcast packet is successfully sent through the method provided by the present application, that is, the embodiment of the present application can change the situation of retransmitting the same fixed number of data packets in the existing Bluetooth protocol, Therefore, it is determined whether to reduce the number of data packet transmissions in the remaining transmission period in the current broadcast cycle, thereby reducing the terminal's occupation of the air interface bandwidth and reducing the terminal's own power consumption under the premise of a higher transmission success rate.
  • Embodiments of the present application further provide a computer-readable medium, where at least one instruction is stored in the computer-readable medium, and the at least one instruction is loaded and executed by a processor to implement the broadcasting of Bluetooth data packets according to the above embodiments method.
  • the device for broadcasting a Bluetooth data packet provided by the above embodiment executes the method for broadcasting a Bluetooth data packet
  • the above-mentioned functional modules are used as an example for illustration. In practical applications, the above-mentioned functions can be allocated as required. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the device for broadcasting a Bluetooth data packet provided by the above-mentioned embodiment belongs to the same concept as the embodiment of the method for broadcasting a Bluetooth data packet, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

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Abstract

本申请实施例公开了一种蓝牙数据包的广播方法、装置、终端及存储介质，属于蓝牙技术领域。本申请实施例能够在发射机原本的发送窗口的至少一侧新设置接收窗口，通过接收窗口检测发送信道的信道干扰，并基于检测结果确定发送窗口中是否成功地广播了蓝牙数据包。由此可见，发射机通过本申请提供的方法具备了预测蓝牙广播包是否成功发送的能力，也即本申请实施例能够改变现有的蓝牙协议中重发固定个数相同的数据包的情况，从而决定在当前的广播周期中剩余的发送时段中，是否减少数据包发送的次数，从而实现了在较高发送成功率的前提下，降低终端对空口带宽的占用以及降低终端自身的功耗。

Description

蓝牙数据包的广播方法、装置、终端及存储介质
本申请要求于2020年12月22日提交的申请号为202011534219.1、发明名称为“蓝牙数据包的广播方法、装置、终端及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及蓝牙技术领域，特别涉及一种蓝牙数据包的广播方法、装置、终端及存储介质。
背景技术
蓝牙(Bluetooth，BT)技术是一种近距离无线通信协议，应用于距离较近的两个设备之间进行互相通信的场景。其中，通过蓝牙技术广播蓝牙数据包景是一种较常见的场景。
相关技术中，发射机和接收机参与到蓝牙数据包的广播过程中。在广播模式中，蓝牙协议设计为在一个广播周期内重复发送若干次。
发明内容
本申请实施例提供了一种蓝牙数据包的广播方法、装置、终端及存储介质。所述技术方案如下：
根据本申请的一方面内容，提供了一种蓝牙数据包的广播方法，所述方法包括：
在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及
基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
根据本申请的另一方面内容，提供了一种蓝牙数据包的广播装置，所述装置包括：
接收模块，用于在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及
确定模块，用于基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
根据本申请的另一方面内容，提供了一种终端，所述终端包括处理器和存储器，所述存储器中存储有至少一条指令，所述指令由所述处理器加载并执行以实现如本申请各个方面提供的蓝牙数据包的广播方法。
根据本申请的另一方面内容，提供了一种计算机可读存储介质，所述存储介质中存储有至少一条指令，所述指令由处理器加载并执行以实现如本申请各个方面提供的蓝牙数据包的广播方法。
根据本申请的一个方面，提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中。计算机设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行上述蓝牙数据包的发送方面的各种可选实现方式中提供的方法。
附图说明
为了更清楚地介绍本申请实施例中的技术方案，下面将对本申请实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本申请一个示例性实施例提供的一种终端的结构框图；
图2是本申请实施例提供的一种蓝牙数据包广播的环境示意图；
图3是本申请一个示例性实施例提供的一种蓝牙数据包的广播方法的流程图；
图4是基于图3所示实施例提供的一种蓝牙数据包的广播时的信道使用示意图；
图5是基于图4所示实施例提供的一种单个广播周期内发送窗口的示意图；
图6是本申请另一个示例性实施例提供的一种蓝牙数据包的广播方法流程图；
图7是本申请另一个示例性实施例提供的一种蓝牙数据包的广播方法流程图；
图8是本申请另一个示例性实施例提供的一种蓝牙数据包的广播方法流程图；
图9是本申请实施例提供的一种发送窗口的设置示意图；
图10是本申请一个示例性实施例提供的一种蓝牙数据包的广播装置的结构框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请的描述中，需要理解的是，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“相连”、“连接”应做广义理解， 例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。此外，在本申请的描述中，除非另有说明，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请提供了一种蓝牙数据包的广播方法，其中，所述方法包括：在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及，基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
可选的，所述接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口。
可选的，所述方法还包括：在所述第一接收窗口检测所述发送信道的第一信道信号强度，所述第一信道信号强度用于指示所述发送信道的信道干扰程度；以及，将所述第一信道信号强度确定为所述检测结果。
可选的，所述基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于所述第一信道信号强度小于第一阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件。
可选的，所述基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于第一溢出能量大于第二阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值。
可选的，所述方法还包括：响应于所述第一信道信号强度大于或等于所述第一阈值，放弃在所述发送窗口广播所述蓝牙数据包。
可选的，所述方法还包括：响应于第一溢出能量小于或等于所述第二阈值，将发送所述蓝牙数据包的发射功率增加第一增量作为新的发射功率；以所述新的发射功率在所述发送窗口广播所述蓝牙数据包。
可选的，所述接收窗口包括位于晚于所述发送窗口的一侧的第二接收窗口。
可选的，所述方法还包括：在所述第二接收窗口检测所述发送信道的第二信道信号强度，所述第二信道信号强度用于指示所述发送信道的信道干扰程度；以及，将所述第二信道信号强度确定为所述检测结果。
可选的，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于所述第二信道信号强度小于第三阈值，确定所述发送窗口已成功广播所述蓝牙数据包。
可选的，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于第二溢出能量大于第四阈值，确定所述发送窗口 已成功广播所述蓝牙数据包，所述第二溢出能量是发送所述蓝牙数据包的发射功率与所述第二信道信号强度的差值。
可选的，所述接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口和位于晚于所述发送窗口的一侧的第二接收窗口。
可选的，所述方法还包括：在第一接收窗口检测所述发送信道的第一信道信号强度；在第二接收窗口检测所述发送信道的第二信道信号强度；以及，将所述第一信道信号强度和所述第二信道信号强度确定为所述检测结果。
可选的，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于所述第一信道信号强度小于第一阈值，且所述第二信道信号强度小于第三阈值，确定在所述发送窗口中成功广播所述蓝牙数据包。
可选的，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：响应于第一溢出能量大于第二阈值，且第二溢出能量大于第四阈值，确定在所述发送窗口中成功广播所述蓝牙数据包，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值，所述第二溢出能量是发送所述蓝牙数据包的发射功率与第二信道信号强度的差值。
可选的，当确定在所述发送窗口中成功广播所述蓝牙数据包时，所述方法还包括：在广播周期内的后续的发送窗口中取消广播所述蓝牙数据包；或，在广播周期内的后续的发送窗口中减少广播所述蓝牙数据包。
可选的，所述发送窗口是广播周期中的第一个发送窗口。
基于上述方案，本申请实施例能够在发射机原本的发送窗口的至少一侧新设置接收窗口，通过接收窗口检测发送信道的信道干扰，并基于检测结果确定发送窗口中是否成功地广播了蓝牙数据包。由此可见，发射机通过本申请提供的方法具备了预测蓝牙广播包是否成功发送的能力，也即本申请实施例能够改变现有的蓝牙协议中重发固定个数相同的数据包的情况，从而决定在当前的广播周期中剩余的发送时段中，是否减少数据包发送的次数，从而实现了在较高发送成功率的前提下，降低终端对空口带宽的占用以及降低终端自身的功耗。
为了本申请实施例所示方案易于理解，下面对本申请实施例中出现的若干名词进行介绍。
经典蓝牙(Classic Bluetooth)协议：是一种无线数据和语音通信开放的规范。在应用过程中，经典蓝牙协议基于低成本的近距离无线连接，为固定和移动设备建立通信环境。在经典蓝牙协议的频段中，包括2.4GHz至2.485GHz的ISM(Industrial Scientific Medical)波段。
示意性的，经典蓝牙协议所使用的信道的个数是79个。
低功耗蓝牙(Bluetooth Low Energy，BLE)协议：与经典蓝牙协议相比，低功耗蓝牙协议能在保持同等通信范围的同时显著降低功耗和成本。针对该 低功耗蓝牙协议，规定了40个信道。在该40个信道中，包括3个广播信道和37个数据信道。需要说明的是，在另一种命名规则中，低功耗蓝牙协议的信道也称为频道。
在实际实现的场景中，低功耗蓝牙协议不能向后兼容原有的经典蓝牙协议。然而，由于低功耗蓝牙协议和经典蓝牙协议所使用的无线电频率均是2.4GHz。因此，低功耗蓝牙协议和经典蓝牙协议可以共用一根天线。
示例性地，本申请实施例所示的蓝牙数据包的广播方法，可以应用在终端中，该终端具备天线模组且能够基于BT或BLE发送蓝牙数据包。终端可以包括手机、平板电脑、膝上型电脑、台式电脑、电脑一体机、服务器、工作站、电视、智能眼镜、智能手表、数码相机、MP4播放终端、MP5播放终端、学习机、点读机、电纸书、电子词典、车载终端、虚拟现实(Virtual Reality，VR)播放终端或增强现实(Augmented Reality，AR)播放终端等。
请参见图1，图1是本申请一个示例性实施例提供的一种终端的结构框图。如图1所示，该终端包括处理器120、存储器140和天线模组160，所述存储器140中存储有至少一条指令，所述指令由所述处理器120加载并执行以实现如本申请各个方法实施例所述的蓝牙数据包的广播方法。天线模组160用于发送蓝牙数据包，其中，蓝牙数据包是终端按照BT协议或BLE协议等蓝牙协议发送的数据包。
在本申请中，终端100是具备广播蓝牙数据包功能的电子设备。在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及，基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
处理器120可以包括一个或者多个处理核心。处理器120利用各种接口和线路连接整个终端100内的各个部分，通过运行或执行存储在存储器140内的指令、程序、代码集或指令集，以及调用存储在存储器140内的数据，执行终端100的各种功能和处理数据。可选的，处理器120可以采用数字信号处理(Digital Signal Processing，DSP)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)、可编程逻辑阵列(Programmable Logic Array，PLA)中的至少一种硬件形式来实现。处理器120可集成中央处理器(Central Processing Unit，CPU)、图像处理器(Graphics Processing Unit，GPU)和调制解调器等中的一种或几种的组合。其中，CPU主要处理操作系统、用户界面和应用程序等；GPU用于负责显示屏所需要显示的内容的渲染和绘制；调制解调器用于处理无线通信。可以理解的是，上述调制解调器也可以不集成到处理器120中，单独通过一块芯片进行实现。
存储器140可以包括随机存储器(Random Access Memory，RAM)，也可以包括只读存储器(Read-Only Memory，ROM)。可选的，该存储器140包括非瞬时性计算机可读介质(non-transitory computer-readable storage medium)。 存储器140可用于存储指令、程序、代码、代码集或指令集。存储器140可包括存储程序区和存储数据区，其中，存储程序区可存储用于实现操作系统的指令、用于至少一个功能的指令(比如触控功能、声音播放功能、图像播放功能等)、用于实现下述各个方法实施例的指令等；存储数据区可存储下面各个方法实施例中涉及到的数据等。
天线模组160既可以是单根天线，也可以是包括多根天线的模组，本申请实施例对此不作限定。一种可能的方式中，通过BT协议和通过BLE协议发送的数据包可以共用同一个天线。在实际应用场景中，终端能够通过处理器120控制基于BT协议或者基于BLE协议发送的蓝牙数据包各自所占用的时间。
请参见图2，图2是本申请实施例提供的一种蓝牙数据包广播的环境示意图。在图2中，包括广播终端210、第一接收终端(BT Device Receiver)或(BLE Device Receiver)221、第二接收终端222、第三接收终端223和第四接收终端224。其中，广播终端既可以是普通的广播终端，也可以是经典蓝牙广播终端(BT Device Broadcaster)或低功耗蓝牙广播终端(BLE Device Broadcaster)。图2中所示的结构也可称之为一种蓝牙广播的拓扑结构，其中箭头的方向用于表示蓝牙数据包的传输方向。
需要说明的是，图2中接收终端的个数仅为示例性说明，本申请不对接收终端的个数进行具体的限制。
基于图2所示的应用环境，广播终端210可以是任意一个具有天线模组且支持BT协议、BLE协议或其它蓝牙协议的终端设备。
一种可能的实现方式中，第一接收终端至第四接收终端可以是相同类型的终端设备，例如，第一接收终端至第四接收终端均为蓝牙音箱。
另一种可能的实现方式中，第一接收终端至第四接收终端还可以是不同类型的终端设备。例如，第一接收终端是智能手机、第二接收终端是智能手表、第三接收终端是蓝牙音箱且第四接收终端是智能电视。
需要说明的是，标准蓝牙技术中的广播(Broadcast)，是通过冗余重传来提供发送到达的概率。该冗余重传的方法属于尽力服务。例如，在蓝牙5.2版本中引入的LE ISO功能，定义了基于广播的等时数据传输。该等时数据传输能够用于语音数据传输或音频数据传输，从而提供语音分享服务或音频分享服务。为了提高语音或音频传输的成功率，等时数据传输方式被定义了重传机制。其中，重传机制能够将需要传输的数据包经过多次重传。该被重传的数据包中既可以包括语音数据或音频数据等业务数据，也可以包括控制数据。
在该重传机制中，终端在单个广播周期中发送的数据包的重传的次数都是固定的。例如，单个广播周期被分为n个时段，每一个时段中均发送一次蓝牙数据包。其中，在单个广播周期的第1个发送窗口中发送的蓝牙数据包可以被视为新数据包。从第2个发送窗口到第n个发送窗口被视为用于重传 该蓝牙数据包的发送窗口，该蓝牙数据包一共被重传n-1次。
由此可见，在该重传机制中，无论处于任何场景中，广播终端均将按照预定的次数n-1重传蓝牙数据包。也即无论蓝牙数据包是否已经被接收终端成功接收，广播终端都将重新传输n-1次蓝牙数据包，从而增加了空口带宽并给广播终端带来较大功耗。
针对上述蓝牙广播的应用现状，本申请提供一种能够令广播终端自主判断蓝牙数据包是否发送成功，从而在蓝牙数据包较大可能成功发送时减小在单个广播周期中剩余发送时段中发送的蓝牙数据包的次数，详情请参见图3的介绍。
请参考图3，图3是本申请一个示例性实施例提供的一种蓝牙数据包的广播方法的流程图。该蓝牙数据包的广播方法可以应用在上述图2所示的广播终端中。在图3中，该蓝牙数据包的广播方法包括：
步骤310，在发送窗口的至少一侧设置接收窗口，接收窗口用于检测发送信道的信道干扰。
广播终端能够在发送窗口的至少一侧设置接收窗口。其中，发送的至少一侧包括时间早于发送窗口的一侧，以及，时间晚于发送窗口的一侧。广播终端既可以包括其中一侧的接收窗口，也可以包括早于发送窗口的一侧和晚于发送窗口的一侧。
在广播终端设置完成接收窗口之后，广播终端能够在该接收窗口中检测发送信道的信道干扰。需要说明的是，广播终端将在自身的系统时间到达接收窗口后，接收来自发送信道的信号，从而检测该发送信道的信号干扰。
当广播终端广播蓝牙数据包时，广播终端能够在单个广播周期中重复发送蓝牙数据包。其中，单个广播周期被划分为n个发送窗口。可选地，一种可能的方式中，每一个发送窗口之间的时间间隔相等。另一种可能的方式中，每一个发送窗口之间的间隔时长不等。需要说明的是，本申请实施例中指示的发送窗口可以是广播周期中的第一发送窗口。或者，本申请实施例还可能将发送窗口设置为广播周期中除最后一个发送窗口之外的任意一个发送窗口。
请参见图4，图4是基于图3所示实施例提供的一种蓝牙数据包的广播时的信道使用示意图。在图4中，以广播终端所使用的蓝牙信道的数量是5个为例。5个可以用来发送蓝牙数据包的信道分别为，第一信道410、第二信道420、第三信道430、第四信道440和第五信道450。
基于图4的信道使用情况，广播终端在第一广播周期t1中，通过第二信道420承载第一蓝牙数据包4a，将第一蓝牙数据包4a广播出去。广播终端在第二广播周期t2中，通过第四信道440承载第二蓝牙数据包4b，将第二蓝牙数据包4b广播出去。广播终端在第三广播周期t3中，通过第一信道410承载第三蓝牙数据包4c，将第三蓝牙数据包4c广播出去。广播终端在第四广播周期t4中，通过第二信道420承载第四蓝牙数据包4d，将第四蓝牙数据包4d 广播出去。
需要说明的是，在图4所示的场景中，在单个广播周期内，广播终端所使用的蓝牙信道是固定的。例如，在第二广播周期t2内，广播终端所使用的蓝牙信道固定为第四信道440。
在另一种使用场景中，若蓝牙协议指定单个广播周期内，广播终端可以使用不同的蓝牙信道，则广播终端能够以单个广播周期内的发送窗口为单位，为各个发送窗口指定相应的蓝牙信道。
请参考图5，图5是基于图4所示实施例提供的一种单个广播周期内发送窗口的示意图。在图5中，第一广播周期5A被包括8个发送窗口。8个发送窗口分别包括第一发送窗口510、第二发送窗口520、第三发送窗口530、第四发送窗口540、第五发送窗口550、第六发送窗口560、第七发送窗口570和第八发送窗口580。
步骤320，基于接收窗口的检测结果，确定在发送窗口中是否成功广播蓝牙数据包。
在本申请实施例中，广播终端能够基于接收窗口的检测结果，来确定发送窗口中是否广播蓝牙数据包。
一种可能的场景中，若广播终端在发送窗口之前预测能够成功广播蓝牙数据包，则广播终端在发送窗口中广播蓝牙数据包。反之，广播终端在发送窗口之前预测不能成功广播蓝牙数据包，则广播终端可以在发送窗口中不再广播蓝牙数据包。
另一种可能的场景中，若广播终端在发送窗口之后检测该发送窗口已成功广播蓝牙数据包，则广播终端可以在本次广播周期中剩余的发送窗口中减少或取消蓝牙数据包的重传。反之，广播终端在发送窗口之后检测该发送窗口没有成功广播蓝牙数据包，则广播终端可以在本次广播周期中后续的发送窗口中继续按照原本设定的重传次数重传蓝牙数据包。
综上所述，本申请实施例能够在发射机原本的发送窗口的至少一侧新设置接收窗口，通过接收窗口检测发送信道的信道干扰，并基于检测结果确定发送窗口中是否成功地广播了蓝牙数据包。由此可见，发射机通过本申请提供的方法具备了预测蓝牙广播包是否成功发送的能力，也即本申请实施例能够改变现有的蓝牙协议中重发固定个数相同的数据包的情况，从而决定在当前的广播周期中剩余的发送时段中，是否减少数据包发送的次数，从而实现了在较高发送成功率的前提下，降低终端对空口带宽的占用以及降低终端自身的功耗。
基于上一个实施例所公开的方案，广播终端还能够在不同的场景中，通过不同的方案识别出蓝牙数据包成功发送的场景，从而在保证蓝牙数据包成功发送的情况下，降低对空口带宽的占用以及降低广播终端自身的功耗，请参考如下实施例。
请参见图6，图6是本申请另一个示例性实施例提供的一种蓝牙数据包的 广播方法流程图。在图6所示的实施例中，接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口。该蓝牙数据包的广播方法可以应用在上述所示的广播终端中。在图6中，该蓝牙数据包的广播方法包括：
步骤611，在早于发送窗口的一侧设置第一接收窗口。
步骤612，在第一接收窗口检测发送信道的第一信道信号强度。
其中，第一信道信号强度用于指示发送信道的信道干扰程度。
步骤613，将第一信道信号强度确定为检测结果。
在本例中，广播终端在早于发送窗口的第一接收窗口中，检测发送信道的第一信道信号强度。其中，第一信道信号强度用于指示发送信道的信道干扰程度。在一种可能的应用方式中，第一信道信号强度可以用function_pass_or_fail1(RSSIpre)表示。
步骤614，响应于第一信道信号强度小于第一阈值，确定发送窗口具备成功广播蓝牙数据包的条件。
在本申请中，广播终端中将预先设置第一阈值。其中，第一阈值可以是技术人员通过若干次实践或者异常日志中总结出的数值。例如，第一阈值可以是-60dBm、-55dBm或-62dBm等数值，本申请实施例不对第一阈值具体的取值进行限定。
广播终端能够在第一信道信号强度小于第一阈值时，确定发送窗口具备成功广播蓝牙数据包的条件。
步骤615，响应于第一信道信号强度大于或等于第一阈值，放弃在发送窗口广播蓝牙数据包。
在本例中，第一信道信号强度大于或等于第一阈值时，说明发送窗口中已经存在其他信号在传输，或者，该信道本身存在较大噪声。因此，本申请实施例在第一信道信号强度大于或等于第一阈值时，放弃在发送窗口广播蓝牙数据包。
步骤616，响应于第一溢出能量大于第二阈值，确定发送窗口具备成功广播蓝牙数据包的条件。
其中，第一溢出能量是发送蓝牙数据包的发射功率与第一信道信号强度的差值。
类似于第一阈值的设置方法，第二阈值的设置方法也可以是根据技术人员通过若干次实践或者异常日志中总结出的数值。例如，第二阈值可以是6dBm、5dBm或7dBm等数值，本申请实施例不对第二阈值具体的取值进行限定。
在本例中，本申请实施例还能够获取发送蓝牙数据包的发射功率。在本申请实施例中，蓝牙数据包的发射功率是预设的数据。广播终端能够在尚未广播蓝牙数据包时，通过预设的数据获知到发送蓝牙数据包的发射功率。
在此基础上，广播终端能够确定第一溢出能量，该第一溢出能量等于蓝牙数据包的发射功率与第一信道信号强度的差值。例如，蓝牙数据包的发射功率是-50dBm，第一信道信号强度是-60dBm，则第一溢出能量是10dBm。 若第二阈值是5dBm，则第一溢出能量大于第二阈值，广播终端确定发送窗口具备成功广播蓝牙数据包的条件。
在一种第一溢出能量的计算方式中，广播终端所使用的入参组合可以是function_pass_or_fail4(RSSIpre,TXPower)。其中，RSSIpre用于表示第一信道信号强度，TXPower用于表示蓝牙数据包的发射功率。
步骤617，响应于第一溢出能量小于或等于第二阈值，将发送蓝牙数据包的发射功率增加第一增量作为新的发射功率；以新的发射功率在发送窗口广播蓝牙数据包。
例如，蓝牙数据包的发射功率是-58dBm，第一信道信号强度是-60dBm，则第一溢出能量是2dBm。若第二阈值是5dBm，则第一溢出能量小于第二阈值，广播终端将为牙数据包的发射功率增加第一增量。若该第一增量是5dBm，则新的发射功率是-53dBm，新的发射功率与第一信道信号强度的差值是7dBm，大于第二阈值的5dBm，从而广播终端以新的发射功率-53dBm在发送窗口广播蓝牙数据包。
在一种可能的方式中，单个广播周期中，广播终端用于发送每一次蓝牙数据包的第一发送功率的相同。在另一种可能的方式中，单个广播周期中，广播终端将为每一次发送蓝牙数据包的第一发送功率赋予不同的数值。
请参见表一，表一示出了一种一个广播周期中的8个发送窗口中各自的第一发送功率的设置数值。
Figure PCTCN2021121442-appb-000001
表一
在表一中，广播终端将该广播周期中每一个时段的第一发送功率，均设置为-45dBm。基于该设置，广播终端能够在第一接收窗口中，提前计算用于发送蓝牙数据包的溢出能量数值。
请参见表二，表二示出了另一种一个广播周期中的8个发送窗口中各自的第一发送功率的设置数值。
Figure PCTCN2021121442-appb-000002
表二
在表二中，广播终端将该按照预设发送策略，为广播周期中每一个时段设置独立的第一发送功率。其中，该第一发送功率可以在时间轴上处于功率逐渐降低的趋势，如表二所提供的数据所示。在另一种可能的方式中，该第一发送功率可以在时间轴上还可以处于功率逐渐升高的趋势。也即，广播终端通过为每个时段设置不同的第一发送功率，能够在环境噪声较为恒定的情况下，尽可能避免多次发送仍然失败的情况发生。
在又一种可能的计算方式中，广播终端将根据前置空闲时段的信道信号 强度和后置空闲时段的信道信号强度算出平均信道信号强度。广播终端将获取平均信道信号强度与第一阈值的比值，根据该比值获取对应的第一削减数值p。在该计算方式中，广播终端所使用的入参组合可以是function_pass_or_fail3(RSSIpre,RSSIpost)，其中，RSSIpre用于指示蓝牙信道在前置空闲时段的信道信号强度，RSSIpost用于指示蓝牙信道在后置空闲时段的信道信号强度。
步骤618，在广播周期内的后续的发送窗口中取消广播蓝牙数据包。
步骤619，在广播周期内的后续的发送窗口中减少广播蓝牙数据包。
综上所述，本实施例能够在接收窗口设置在发送窗口之前的场景下，根据接收窗口本身的第一信道信号强度，预测在发送窗口是否能够成功发送蓝牙数据包。或者，同时根据接收窗口本身的第一信道信号强度和发送蓝牙数据包的发射功率，预测在发送窗口是否能够成功发送蓝牙数据包。因此，本实施例能够在实际广播蓝牙数据包之前就预测在发送窗口使能能够成功广播。在成功的可能性较高的情况下，终端在发送窗口广播蓝牙数据包，反之则放弃在发送窗口广播蓝牙数据包，提高了信道利用效率并节省了无谓的功耗。
请参见图7，图7是本申请另一个示例性实施例提供的一种蓝牙数据包的广播方法流程图。在图7所示的实施例中，接收窗口包括位于晚于所述发送窗口的一侧的第二接收窗口。该蓝牙数据包的广播方法可以应用在上述所示的广播终端中。在图7中，该蓝牙数据包的广播方法包括：
步骤711，在晚于发送窗口的一侧设置第二接收窗口。
步骤712，在第二接收窗口检测发送信道的第二信道信号强度。
其中，第二信道信号强度用于指示发送信道的信道干扰程度。
步骤713，将第二信道信号强度确定为检测结果。
在本例中，广播终端在晚于发送窗口的第二接收窗口中，检测发送信道的第二信道信号强度。其中，第二信道信号强度用于指示发送信道的信道干扰程度。在一种可能的计算方式中，第二信道信号强度可以用参数值RSSIpost表示，计算第二信道信号强度的函数可以用function_pass_or_fail2(RSSIpost)表示。
步骤714，响应于第二信道信号强度小于第三阈值，确定发送窗口已成功广播蓝牙数据包。
在本申请中，广播终端中将预先设置第三阈值。其中，第三阈值可以是技术人员通过若干次实践或者异常日志中总结出的数值。例如，第三阈值可以是-58dBm、-57dBm或-56dBm等数值，本申请实施例不对第三阈值具体的取值进行限定。
广播终端能够在第二信道信号强度小于第三阈值时，确定发送窗口已成功广播了蓝牙数据包。
步骤715，响应于第二溢出能量大于第四阈值，确定发送窗口已成功广播 蓝牙数据包。
其中，第二溢出能量是发送蓝牙数据包的发射功率与第二信道信号强度的差值。
类似于第三阈值的设置方法，第四阈值的设置方法也可以是根据技术人员通过若干次实践或者异常日志中总结出的数值。例如，第四阈值可以是4dBm、5dBm或6dBm等数值，本申请实施例不对第四阈值具体的取值进行限定。
在本例中，本申请实施例还能够获取发送蓝牙数据包的发射功率。在本申请实施例中，该发射功率是发送窗口发送蓝牙数据包时的实测发射功率。
在此基础上，广播终端能够确定第二溢出能量，该第二溢出能量等于蓝牙数据包的发射功率与第二信道信号强度的差值。例如，蓝牙数据包的发射功率是-52dBm，第二信道信号强度是-65dBm，则第二溢出能量是13dBm。若第二阈值是5dBm，则第二溢出能量大于第二阈值，广播终端确定发送窗口具备成功广播蓝牙数据包的条件。
在一种可能的第二溢出能量的计算方式中，广播终端所使用的函数可以是function_pass_or_fail5(RSSIpost,TXPower)。其中，RSSIpost用于表示第二信道信号强度，TXPower用于指示实测的蓝牙数据包的发射功率。
步骤716，在广播周期内的后续的发送窗口中取消广播蓝牙数据包。
步骤717，在广播周期内的后续的发送窗口中减少广播蓝牙数据包。
综上所述，本申请实施例能够在接收窗口设置在发送窗口之后的场景下，根据接收窗口本身的第二信道信号强度，判断已经通过发送窗口发送的蓝牙数据包是否成功发送。或者，同时根据接收窗口本身的第二信道信号强度和实测的发送蓝牙数据包的发射功率，判断已经在发送窗口发送的蓝牙数据包是否成功广播。因此，本实施例能够在广播完蓝牙数据包之后，判断该蓝牙数据包是否广播成功。在判断蓝牙数据包已成功广播后，在广播周期内的后续的发送窗口中减少或取消广播蓝牙广播包，在保证广播蓝牙广播包较高的成功率下，降低了用于广播的功耗和带宽。
请参见图8，图8是本申请另一个示例性实施例提供的一种蓝牙数据包的广播方法流程图。在图8所示的实施例中，接收窗口包括两个接收窗口，一个窗口是位于早于发送窗口的一侧的第一接收窗口，另一个窗口是位于晚于发送窗口的一侧的第二接收窗口。该蓝牙数据包的广播方法可以应用在上述所示的广播终端中。在图8中，该蓝牙数据包的广播方法包括：
步骤811，在早于发送窗口的一侧设置第一接收窗口。
步骤812，在第一接收窗口检测发送信道的第一信道信号强度。
步骤813，在晚于发送窗口的一侧设置第二接收窗口。
步骤814，在第二接收窗口检测发送信道的第二信道信号强度。
步骤815，将第一信道信号强度和第二信道信号强度确定为检测结果。
步骤816，响应于第一信道信号强度小于第一阈值，且第二信道信号强度 小于第三阈值，确定在发送窗口中成功广播蓝牙数据包。
需要说明的是，步骤811至步骤815中所示的第一接收窗口、第二接收窗口、第一信道信号强度和第二信道信号强度中的相关概念可以参照图6或图7所示实施例中的实施过程，本处不再赘述。
在本申请实施例中，广播终端为了提高判断成功广播蓝牙数据包的准确性，同时利用第一信道信号强度和第二信道信号强度的数值判断蓝牙数据包是否成功广播。从广义上来说，广播终端将在发送窗口之前的信道干扰较低，并在发送窗口之后的信道干扰较低的情况下，确定蓝牙数据包成功广播。
步骤817，响应于第一溢出能量大于第二阈值，且第二溢出能量大于第四阈值，确定在发送窗口中成功广播蓝牙数据包。
其中，第一溢出能量是发送蓝牙数据包的发射功率与第一信道信号强度的差值，第二溢出能量是发送蓝牙数据包的发射功率与第二信道信号强度的差值。
在本申请实施例中，广播终端为了提高判断成功广播蓝牙数据包的准确性，同时利用第一溢出能量和第二溢出能量来判断蓝牙数据包是否成功广播。从广义上来说，广播终端将在发送蓝牙数据包的发射功率高于第一接收窗口接收到的信道干扰的数值较高，并且广播终端在发送蓝牙数据包的发射功率高于第二接收窗口接收到的信道干扰的数值较高时，来确定蓝牙数据包成功被广播。
步骤818，在广播周期内的后续的发送窗口中取消广播蓝牙数据包。
步骤819，在广播周期内的后续的发送窗口中减少广播蓝牙数据包。
请参见图9，图9是本申请实施例提供的一种发送窗口的设置示意图。在图9中，广播周期9A中包括8个发送窗口，分别是第一发送窗口910、第二发送窗口920、第三发送窗口930、第四发送窗口940、第五发送窗口950、第六发送窗口960、第七发送窗口970和第八发送窗口980。以第二发送窗口920为例，本申请可以在早于第二发送窗口920的一侧设置第一接收窗口921，在晚于第二发送窗口920的一侧设置第二接收窗口922。
综上所述，本申请实施例能够同时根据第一接收窗口和第二接收窗口中测试到的信道信号强大，来判断在发送窗口中发送的蓝牙数据包是否成功广播。或者，本申请还能够结合第一信道信号强度、第二信道信号强度和蓝牙广播包的发射功率，来综合判断在发送窗口中发送的蓝牙数据包是否成功广播。在判断蓝牙数据包已成功广播后，在广播周期内的后续的发送窗口中减少或取消广播蓝牙广播包，在保证广播蓝牙广播包较高的成功率下，降低了用于广播的功耗和带宽。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
请参考图10，图10是本申请一个示例性实施例提供的一种蓝牙数据包的广播装置的结构框图。该蓝牙数据包的广播装置可以通过软件、硬件或者两 者的结合实现成为终端的全部或一部分。该装置包括：
接收模块1010，用于在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及
确定模块1020，用于基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
在一个可选的实施例中，所述装置涉及的接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口。
在一个可选的实施例中，所述装置包括第一检测模块和第一确定子模块，所述第一检测模块，用于在所述第一接收窗口检测所述发送信道的第一信道信号强度，所述第一信道信号强度用于指示所述发送信道的信道干扰程度。所述第一确定子模块，用于将所述第一信道信号强度确定为所述检测结果。
在一个可选的实施例中，所述确定模块1020，用于响应于所述第一信道信号强度小于第一阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件。
在一个可选的实施例中，所述确定模块1020，用于响应于第一溢出能量大于第二阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值。
在一个可选的实施例中，所述装置还包括取消模块，所述取消模块用于响应于所述第一信道信号强度大于或等于所述第一阈值，放弃在所述发送窗口广播所述蓝牙数据包。
在一个可选的实施例中，所述装置包括更新模块和发送模块，所述更新模块用于响应于第一溢出能量小于或等于所述第二阈值，将发送所述蓝牙数据包的发射功率增加第一增量作为新的发射功率；所述发送模块，用于以所述新的发射功率在所述发送窗口广播所述蓝牙数据包。
在一个可选的实施例中，所述装置中涉及的所述接收窗口包括位于晚于所述发送窗口的一侧的第二接收窗口。
在一个可选的实施例中，所述装置包括第二检测模块和第二确定子模块，所述第二检测模块，用于在所述第二接收窗口检测所述发送信道的第二信道信号强度，所述第二信道信号强度用于指示所述发送信道的信道干扰程度；所述第二确定子模块，用于将所述第二信道信号强度确定为所述检测结果。
在一个可选的实施例中，所述确定模块，用于响应于所述第二信道信号强度小于第三阈值，确定所述发送窗口已成功广播所述蓝牙数据包。
在一个可选的实施例中，所述确定模块，用于响应于所述第二信道信号强度小于第三阈值，确定所述发送窗口已成功广播所述蓝牙数据包。
在另一个可选的实施例中，所述确定模块，用于响应于第二溢出能量大于第四阈值，确定所述发送窗口已成功广播所述蓝牙数据包，所述第二溢出能量是发送所述蓝牙数据包的发射功率与所述第二信道信号强度的差值。
在一个可选的实施例中，所述装置涉及的所述接收窗口包括位于早于所 述发送窗口的一侧的第一接收窗口和位于晚于所述发送窗口的一侧的第二接收窗口。
在一个可选的实施例中，在所述装置中，所述第一检测模块，用于在第一接收窗口检测所述发送信道的第一信道信号强度；所述第二检测模块，用于在第二接收窗口检测所述发送信道的第二信道信号强度；第三确定子模块，用于将所述第一信道信号强度和所述第二信道信号强度确定为所述检测结果。
在一个可选的实施例中，所述确定模块，用于响应于所述第一信道信号强度小于第一阈值，且所述第二信道信号强度小于第三阈值，确定在所述发送窗口中成功广播所述蓝牙数据包。
在一个可选的实施例中，所述确定模块，用于应于第一溢出能量大于第二阈值，且第二溢出能量大于第四阈值，确定在所述发送窗口中成功广播所述蓝牙数据包，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值，所述第二溢出能量是发送所述蓝牙数据包的发射功率与第二信道信号强度的差值。
在一个可选的实施例中，所述装置包括调整模块，所述调整模块用于在确定在所述发送窗口中成功广播所述蓝牙数据包时，在广播周期内的后续的发送窗口中取消广播所述蓝牙数据包。或者，所述调整模块用于在确定在所述发送窗口中成功广播所述蓝牙数据包时，在广播周期内的后续的发送窗口中减少广播所述蓝牙数据包。
在一个可选的实施例中，所述装置涉及的所述发送窗口是广播周期中的第一个发送窗口。
综上所述，本申请实施例能够在发射机原本的发送窗口的至少一侧新设置接收窗口，通过接收窗口检测发送信道的信道干扰，并基于检测结果确定发送窗口中是否成功地广播了蓝牙数据包。由此可见，发射机通过本申请提供的方法具备了预测蓝牙广播包是否成功发送的能力，也即本申请实施例能够改变现有的蓝牙协议中重发固定个数相同的数据包的情况，从而决定在当前的广播周期中剩余的发送时段中，是否减少数据包发送的次数，从而实现了在较高发送成功率的前提下，降低终端对空口带宽的占用以及降低终端自身的功耗。
本申请实施例还提供了一种计算机可读介质，该计算机可读介质存储有至少一条指令，所述至少一条指令由处理器加载并执行以实现如上各个实施例所述的蓝牙数据包的广播方法。
需要说明的是：上述实施例提供的蓝牙数据包的广播装置在执行蓝牙数据包的广播方法时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的蓝牙数据包的广播装置与蓝牙数据包的广播方法实施例属于 同一构思，其具体实现过程详见方法实施例，这里不再赘述。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的能够实现的示例性的实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种蓝牙数据包的广播方法，其中，所述方法包括：
    在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及
    基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
  2. 根据权利要求1所述的方法，所述接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口。
  3. 根据权利要求2所述的方法，所述方法还包括：
    在所述第一接收窗口检测所述发送信道的第一信道信号强度，所述第一信道信号强度用于指示所述发送信道的信道干扰程度；以及
    将所述第一信道信号强度确定为所述检测结果。
  4. 根据权利要求3所述的方法，所述基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于所述第一信道信号强度小于第一阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件。
  5. 根据权利要求3所述的方法，所述基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于第一溢出能量大于第二阈值，确定所述发送窗口具备成功广播所述蓝牙数据包的条件，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值。
  6. 根据权利要求4所述的方法，所述方法还包括：
    响应于所述第一信道信号强度大于或等于所述第一阈值，放弃在所述发送窗口广播所述蓝牙数据包。
  7. 根据权利要求5所述的方法，所述方法还包括：
    响应于第一溢出能量小于或等于所述第二阈值，将发送所述蓝牙数据包的发射功率增加第一增量作为新的发射功率；
    以所述新的发射功率在所述发送窗口广播所述蓝牙数据包。
  8. 根据权利要求1所述的方法，所述接收窗口包括位于晚于所述发送窗口的一侧的第二接收窗口。
  9. 根据权利要求8所述的方法，所述方法还包括：
    在所述第二接收窗口检测所述发送信道的第二信道信号强度，所述第二信道信号强度用于指示所述发送信道的信道干扰程度；以及
    将所述第二信道信号强度确定为所述检测结果。
  10. 根据权利要求9所述的方法，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于所述第二信道信号强度小于第三阈值，确定所述发送窗口已成功广播所述蓝牙数据包。
  11. 根据权利要求9所述的方法，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于第二溢出能量大于第四阈值，确定所述发送窗口已成功广播所述蓝牙数据包，所述第二溢出能量是发送所述蓝牙数据包的发射功率与所述第二信道信号强度的差值。
  12. 根据权利要求1所述的方法，所述接收窗口包括位于早于所述发送窗口的一侧的第一接收窗口和位于晚于所述发送窗口的一侧的第二接收窗口。
  13. 根据权利要求12所述的方法，所述方法还包括：
    在第一接收窗口检测所述发送信道的第一信道信号强度；
    在第二接收窗口检测所述发送信道的第二信道信号强度；以及
    将所述第一信道信号强度和所述第二信道信号强度确定为所述检测结果。
  14. 根据权利要求13所述的方法，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于所述第一信道信号强度小于第一阈值，且所述第二信道信号强度小于第三阈值，确定在所述发送窗口中成功广播所述蓝牙数据包。
  15. 根据权利要求13所述的方法，所述基于检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包，包括：
    响应于第一溢出能量大于第二阈值，且第二溢出能量大于第四阈值，确定在所述发送窗口中成功广播所述蓝牙数据包，所述第一溢出能量是发送所述蓝牙数据包的发射功率与所述第一信道信号强度的差值，所述第二溢出能量是发送所述蓝牙数据包的发射功率与第二信道信号强度的差值。
  16. 根据权利要求1所述的方法，当确定在所述发送窗口中成功广播所述蓝牙数据包时，所述方法还包括：
    在广播周期内的后续的发送窗口中取消广播所述蓝牙数据包；或，
    在广播周期内的后续的发送窗口中减少广播所述蓝牙数据包。
  17. 根据权利要求1所述的方法，所述发送窗口是广播周期中的第一个发送窗口。
  18. 一种用于广播蓝牙数据包的装置，其中，所述装置包括：
    接收模块，用于在发送窗口的至少一侧设置接收窗口，所述接收窗口用于检测发送信道的信道干扰；以及
    确定模块，用于基于所述接收窗口的检测结果，确定在所述发送窗口中是否成功广播所述蓝牙数据包。
  19. 一种终端，其中，所述终端包括处理器、和与所述处理器相连的存储器，以及存储在所述存储器上的程序指令，所述处理器执行所述程序指令时实现如权利要求1至17任一所述的蓝牙数据包的广播方法。
  20. 一种计算机可读存储介质，所述存储介质中存储有程序指令，其中，所述程序指令被处理器执行时实现如权利要求1至17任一所述的蓝牙数据包的广播方法。
PCT/CN2021/121442 2020-12-22 2021-09-28 蓝牙数据包的广播方法、装置、终端及存储介质 WO2022134716A1 (zh)

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