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WO2021155601A1 - Procédé de transmission de données, appareil bluetooth à basse consommation et puce bluetooth à basse consommation - Google Patents

Procédé de transmission de données, appareil bluetooth à basse consommation et puce bluetooth à basse consommation Download PDF

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Publication number
WO2021155601A1
WO2021155601A1 PCT/CN2020/074548 CN2020074548W WO2021155601A1 WO 2021155601 A1 WO2021155601 A1 WO 2021155601A1 CN 2020074548 W CN2020074548 W CN 2020074548W WO 2021155601 A1 WO2021155601 A1 WO 2021155601A1
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WIPO (PCT)
Prior art keywords
link
idle
data
active
data exchange
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Ceased
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PCT/CN2020/074548
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English (en)
Chinese (zh)
Inventor
陈刚
邹景华
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Priority to PCT/CN2020/074548 priority Critical patent/WO2021155601A1/fr
Priority to CN202080001572.5A priority patent/CN111801955B/zh
Publication of WO2021155601A1 publication Critical patent/WO2021155601A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • 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 technical field of Bluetooth Low Energy (BLE) technology, and more specifically, to a method for data transmission, a Bluetooth low energy device, and a Bluetooth low energy chip.
  • BLE Bluetooth Low Energy
  • the BLE device can only interact with the peer device through one of the links at the same time.
  • the BLE device uses an alternate method to interact with the peer device through each link. This method has the disadvantages of lower data transmission rate and higher power consumption.
  • the embodiments of the present application provide a data transmission method, a BLE device, and a BLE chip, which can increase the data transmission rate.
  • a data transmission method performs data interaction with a second device through a first link, and the first device performs data interaction with a third device through a second link.
  • a device determines that the first link is an active link, and determines that the second link is an idle link; a connection time interval CI corresponding to the idle link by the first device through the idle link After completing one data exchange in the idle link, stop the data exchange of the idle link within N CIs corresponding to the idle link, where N is a positive integer; the data exchange of the first device on the idle link During the stop period, data exchange is performed through the active link in each CI corresponding to the active link.
  • the first device after completing a data exchange through the idle link in one CI corresponding to the idle link, the first device stops the idle link in N CIs corresponding to the idle link.
  • data interaction is performed through the active link during the period when the data interaction is stopped corresponding to the idle link.
  • the technical solution provided by the embodiment of the present application reduces the number of data interactions through the idle link and increases the number of data transmissions through the active link, thereby increasing the data transmission rate.
  • the method further includes: the first device performs data exchange through the idle link in the next CI after the N CIs corresponding to the idle link.
  • the determining by the first device that the first link is an active link includes: if the first device needs to transmit data through the first link, determining the first link One link is the active link.
  • the determining by the first device that the first link is an active link includes: if the first device receives an instruction sent by a second device corresponding to the first link Message, the instruction message is used to indicate that the second device corresponding to the first link needs to transmit data to the first device through the first link, and then it is determined that the first link is an active link.
  • the determining by the first device that the first link is an active link includes: the first device determines that the first link is an active link according to a user instruction.
  • the N is not less than the number of links.
  • the priority of the data exchange by the first device through the idle link is higher than the priority of the data exchange through the active link.
  • a low-power Bluetooth BLE device includes a transceiving unit and a processing unit, wherein: the transceiving unit is configured to perform data interaction with a second device through a first link, and, Perform data interaction with the third device through the second link; the processing unit is configured to determine that the first link is an active link, and that the second link is an idle link; the transceiver unit, further It is used to stop the data exchange of the idle link within N CIs corresponding to the idle link after completing a data exchange within a connection time interval CI corresponding to the idle link through the idle link, Wherein, N is a positive integer; and, during the period when the data exchange of the idle link is stopped, data exchange is performed through the active link in each CI corresponding to the active link.
  • the transceiving unit is further configured to perform data exchange through the idle link in the next CI after the N CIs corresponding to the idle link.
  • the processing unit is specifically configured to: if the first device needs to transmit data through the first link, determine that the first link is an active link.
  • the processing unit is specifically configured to: if the transceiver unit receives an instruction message sent by the second device corresponding to the first link, the instruction message is used to instruct the first link If a second device corresponding to a link needs to transmit data to the first device through the first link, it is determined that the first link is an active link.
  • the processing unit is specifically configured to determine that the first link is an active link according to a user instruction.
  • the N is not less than the number of links.
  • the priority of the transceiver unit for data interaction through the idle link is higher than the priority for data interaction through the active link.
  • a low-power Bluetooth BLE chip including: a memory for storing executable instructions; a processor for calling and running the executable instructions in the memory to execute the first aspect Or a method in any possible implementation of the first aspect.
  • Figure 1 is a schematic diagram of a BLE device connection.
  • Figure 2 is a sequence diagram of data interaction.
  • FIG. 3 is another sequence diagram of data interaction.
  • Figure 4 is a schematic diagram of another connection of a BLE device.
  • FIG. 5 is another sequence diagram of data interaction.
  • Figure 6 is another sequence diagram of data interaction.
  • Fig. 7 is a flowchart of a data transmission method according to an embodiment of the present application.
  • Fig. 8 is a data interaction sequence diagram of an embodiment of the present application.
  • Fig. 9 is another data interaction sequence diagram of an embodiment of the present application.
  • Fig. 10 is another sequence diagram of data interaction according to an embodiment of the present application.
  • FIG. 11 is another sequence diagram of data interaction according to an embodiment of the present application.
  • Fig. 12 is a schematic block diagram of a BLE device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a BLE chip according to an embodiment of the present application.
  • the BLE device can only interact with one peer device through one of the links at the same time. Therefore, by setting the priority, the BLE device can exchange data with each peer device through each link in an alternating manner. , So as to maintain the connection of multiple links.
  • BLE device G is connected to BLE device A and BLE device B through link A and link B, respectively. If the BLE device G only needs to perform data interaction with the BLE device A within a certain period of time, and does not need to perform data interaction with the BLE device B, it still needs to maintain the link B connection, which is convenient for a certain period of time. When the BLE device G needs to perform data interaction with the BLE device B, the link B is used.
  • the BLE device G can maintain the link connection with the BLE device A and the BLE device B.
  • FIG. 3 shows a schematic diagram of the data interaction sequence when the BLE device G and the connection event anchor points of the two opposite end devices are different
  • FIG. 4 shows the connection event anchor points of the BLE device G and the two opposite end devices Schematic diagram of the data exchange sequence at the same time.
  • the connection event is a process from the beginning of the air interface data interaction to the end of the air interface data interaction within a connection time interval (Connection Interval, CI) of the connected device.
  • the connection event anchor point is the starting point of time when the device maintains the connection and starts data interaction with the peer device.
  • each interaction can only start data interaction from the starting point of one CI corresponding to each link.
  • the CI may also be expressed as the data exchange period of each link.
  • the time for data exchange in each CI is determined according to the amount of data, but cannot exceed the time bandwidth of one CI.
  • the BLE device G can continue to exchange data through the link A until the link The data transmission on the road B starts or the one CI corresponding to the link A ends.
  • the BLE device G is connected to the BLE device A, the BLE device B, the BLE device C, and the BLE device D through the link A, the link B, the link C, and the link D, respectively. If the BLE device G only needs to perform data interaction with the BLE device A within a certain period of time, there is no need to perform data interaction with the BLE device B, the BLE device C, and the BLE device D, but the link B still needs to be maintained .
  • the connection of link C and link D facilitates the use of link B and link C when the BLE device G needs to exchange data with the BLE device B, BLE device C, and BLE device D after a certain period of time. And link D.
  • FIG. 5 shows a schematic diagram of the data interaction sequence when the BLE device G and the four peer devices have different connection event anchor points
  • FIG. 6 shows the connection event anchor points of the BLE device G and the four peer devices Schematic diagram of the data exchange sequence at the same time.
  • the priority of the BLE device G for data interaction with the peer device through different links is sorted from highest to lowest: link A, link B, link C, and link D;
  • the priority of the link A is immediately reduced to the lowest level.
  • the difference The priority of the links is sorted from highest to lowest: link B, link C, link D, and link A; when the BLE device starts to pass through the link at the beginning of a CI corresponding to the link B After B completes a data exchange with the peer device, the priority of the link B is immediately reduced to the lowest.
  • the priorities of the different links are sorted from highest to lowest: link C, link D, and link A And link B; and so on, after the BLE device completes a data exchange through the starting point of a CI corresponding to each link, the priority of the link is immediately reduced to the lowest.
  • the BLE device G After the BLE device G starts data interaction with the peer device through the link A at the beginning of a CI corresponding to the link A, the BLE device G is at the beginning of a CI corresponding to the link B Start data interaction with the peer device through the link B, and so on, and will not be repeated for the sake of brevity.
  • the above solution can maintain the link connection between the BLE device G and multiple peer devices, the data transmission rate of the link that requires a large amount of data transmission (active link) is low, and the link that transmits data (idle link) is not required.
  • the link transmits empty data packets, which wastes power consumption.
  • an embodiment of the present application proposes a data transmission method 700, which can increase the data transmission rate.
  • FIG. 7 shows a flowchart of a method 700 for data transmission according to an embodiment of the present application.
  • the method 700 includes:
  • the first device exchanges data with the second device through the first link, and the first device exchanges data with the third device through the second link; it should be understood that the first link and the second device exchange data with each other.
  • the link is a Bluetooth communication link.
  • the first device determines that the first link is an active link, and determines that the second link is an idle link.
  • the first device may exchange data with at least two devices through at least two links, and there may be one or more idle links.
  • An active link is a link that requires data transmission. When there is a data transmission demand at either end of the link, the link can be made an active link.
  • the first device needs to transmit data through the first link, it is determined that the first link is an active link.
  • the instruction message is used to indicate the first link corresponding to the first link. If the second device needs to transmit data to the first device through the first link, it is determined that the first link is an active link. When the second device corresponding to the first link needs to transmit data through the first link, an instruction message is sent to the first device; or, when the user needs to transmit data through the first link , You can touch the display screen or button of the second device corresponding to the first link to make the second device send an instruction message to the first device; the instruction message is used for the first device to The first link is determined to be an active link.
  • the first device determines that the first link is an active link according to a user instruction. For example, when the user needs to transmit data through the first link, he can touch a display screen or a button of the first device to make the first device determine the first link as an active link.
  • the first device After completing a data exchange within a connection time interval CI corresponding to the idle link through the idle link, the first device stops the idle link within N CIs corresponding to the idle link Data exchange of channels, where N is a positive integer.
  • the N CIs may be understood as a latency period corresponding to the idle link, and data exchange is not performed through the idle link during the latency period, that is, the latency period is skipped.
  • the first device may perform data exchange through the idle link in the next CI after the N CIs corresponding to the idle link, so as to avoid disconnection of the idle link.
  • the data packet transmitted on the idle link is a null data packet
  • the data packet transmitted on the active link is a data packet with data.
  • the N is not less than the number of links.
  • the N is not less than the number of links, which can effectively increase the data transmission rate through the active link.
  • the larger the N the higher the data transmission rate through the active link.
  • the first device performs data exchange through the active link in each CI corresponding to the active link during a period when data exchange on the idle link is stopped. It should be understood that when there are multiple idle links, data exchange can be performed through the active link in each CI corresponding to the active link when all the idle links stop data exchange.
  • the priority of the data exchange by the first device through the idle link is higher than the priority of the data exchange through the active link.
  • the first device first determines whether the idle link is in the latency period, and when the idle link is in the latency period, data exchange is performed through the active link in each CI corresponding to the active link.
  • the first device after completing a data exchange through the idle link in one CI corresponding to the idle link, the first device stops the idle link in N CIs corresponding to the idle link.
  • data interaction is performed through the active link during the period when the data interaction is stopped corresponding to the idle link.
  • the technical solution provided by the embodiment of the present application reduces the number of data interactions through the idle link and increases the number of data transmissions through the active link, thereby increasing the data transmission rate.
  • FIG. 8 shows a schematic diagram of a data interaction sequence when the connection event anchor points of the first device and a different second device are different
  • FIG. 9 shows a time sequence when the connection event anchor points of the first device and a different second device are the same. Schematic diagram of the data exchange sequence.
  • the first device performs a data exchange on the five idle links corresponding to the idle link.
  • the data exchange of the idle link is stopped in the CI (the data exchange through the idle link is stopped during the latency period corresponding to the idle link), and the data exchange after the 5 CIs corresponding to the idle link is stopped.
  • Data exchange is performed through the idle link in the next CI.
  • the BLE device performs data exchange through the active link in each CI corresponding to the active link during the period when the data exchange of the idle link is stopped. It should be understood that before stopping the data exchange through the idle link, it is necessary to ensure that one data exchange is successful, so that stability can be taken into consideration and the disconnection of the idle link can be prevented.
  • the first device when the idle link is latent, can use the entire bandwidth time in each CI corresponding to the active link for data exchange, which improves the transmission of data through the active link. s efficiency.
  • the latency period of the idle link no data packets are transmitted through the idle link, thereby reducing the power consumption of the BLE device.
  • the four links include link A, link B, link C, and link D.
  • the link A is an active link
  • the link B, link C, and link D are idle links.
  • FIG. 10 shows a schematic diagram of the data exchange sequence when the connection event anchor points of the first device and different second devices are different
  • FIG. 11 shows the data when the connection event anchor points of the first device and different second devices are the same Schematic diagram of the interaction sequence.
  • the first device is in each active link (the link A). Data exchange is performed within each CI through the active link.
  • the priority of the first device for data interaction through the idle link is higher than the priority for data interaction through the active link.
  • the first device performs data interaction through link A during the period when the data interaction of the idle link is stopped.
  • the first device One data exchange is completed through the link B, and the data exchange starts through the link C at the beginning of the next CI.
  • the first device completes a data exchange through the link C, it starts at the beginning of the next CI.
  • Data exchange is carried out through the link D.
  • the data exchange is carried out through the link D, during the period when the data exchange entering the idle link is stopped, all the CIs in each CI corresponding to the active link are passed.
  • the active link performs data exchange.
  • the priority of data exchange through the idle link is sorted from high to low: link B, link C, and link D.
  • link B link B
  • link C link C
  • link D link D
  • the priority of the link B is immediately reduced to the lowest among the idle links
  • the priority of data interaction through idle links is sorted from highest to lowest: link C, link D, and link B; and so on, for the sake of brevity, it will not be repeated.
  • the first device may have multiple links connected to other devices.
  • the at least two links or four links described in the embodiment of the present application are merely an example, and there is no limitation on this.
  • An embodiment of the present application provides a low-power Bluetooth BLE device 1200, and a schematic block diagram of the BLE device 1200 is shown in FIG. 12.
  • the BLE device 1200 includes a transceiver unit 1220 and a processing unit 1210, wherein:
  • the transceiving unit is configured to exchange data with the second device through the first link; and exchange data with the third device through the second link; it should be understood that the first link and the second link
  • the road is a Bluetooth communication link.
  • the processing unit 1210 is configured to determine that the first link is an active link, and determine that the second link is an idle link;
  • the transceiving unit 1220 is further configured to complete a data exchange within a connection time interval CI corresponding to the idle link through the idle link, and then stop the said idle link within N CIs corresponding to the idle link. Data exchange on the idle link, where N is a positive integer, and during the period when the data exchange on the idle link is stopped, data is performed through the active link in each CI corresponding to the active link Interactive.
  • the transceiving unit 1220 is further configured to perform data exchange through the idle link in the next CI after the N CIs corresponding to the idle link.
  • the processing unit 1210 is specifically configured to: if the first device needs to transmit data through the first link, determine that the first link is an active link.
  • the processing unit 1210 is specifically configured to: if the transceiving unit 1220 receives an instruction message sent by the second device corresponding to the first link, the instruction message is used to instruct the first link If the corresponding second device needs to transmit data to the first device through the first link, it is determined that the first link is an active link.
  • the processing unit 1210 is specifically configured to determine that the first link is an active link according to a user instruction.
  • the N is not less than the number of links.
  • the priority of the transceiver unit 1220 for data interaction through the idle link is higher than the priority for data interaction through the active link.
  • FIG. 13 is a schematic structural diagram of a Bluetooth low energy BLE chip 1300 according to an embodiment of the present application.
  • the BLE chip 1300 shown in FIG. 13 includes a memory 1310 and a processor 1320.
  • the memory 1310 is used to store executable instructions; the processor 1320 is used to call and run the executable instructions 1310 in the memory to implement the method in the embodiment of the present application.
  • the aforementioned processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the aforementioned memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Selon des modes de réalisation, la présente invention concerne un procédé de transmission de données, un dispositif BLE et une puce BLE, capables d'améliorer les vitesses de transmission de données. Le présent procédé comprend les étapes suivantes : un premier dispositif effectue un échange de données avec un deuxième dispositif au moyen d'une première liaison, et le premier dispositif effectue un échange de données avec un troisième dispositif au moyen d'une deuxième liaison ; le premier dispositif détermine la première liaison comme étant une liaison active et détermine la deuxième liaison comme étant une liaison inactive ; le premier dispositif, au moyen de la liaison inactive, mène à bien une instance d'échange de données dans un intervalle de temps de connexion CI correspondant à la liaison inactive, puis dans N CI correspondant à la liaison inactive, arrête l'échange de données sur la liaison inactive, N étant un nombre entier positif ; et le premier dispositif, dans les périodes durant lesquelles l'échange de données sur la liaison inactive est arrêté, réalise un échange de données au moyen de la liaison active dans chaque CI correspondant à la liaison active.
PCT/CN2020/074548 2020-02-07 2020-02-07 Procédé de transmission de données, appareil bluetooth à basse consommation et puce bluetooth à basse consommation Ceased WO2021155601A1 (fr)

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PCT/CN2020/074548 WO2021155601A1 (fr) 2020-02-07 2020-02-07 Procédé de transmission de données, appareil bluetooth à basse consommation et puce bluetooth à basse consommation
CN202080001572.5A CN111801955B (zh) 2020-02-07 2020-02-07 一种数据传输的方法、低功耗蓝牙装置和低功耗蓝牙芯片

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PCT/CN2020/074548 WO2021155601A1 (fr) 2020-02-07 2020-02-07 Procédé de transmission de données, appareil bluetooth à basse consommation et puce bluetooth à basse consommation

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