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CN108684021A - A kind of Bluetooth Low Energy communication means and device - Google Patents

A kind of Bluetooth Low Energy communication means and device Download PDF

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Publication number
CN108684021A
CN108684021A CN201810229348.6A CN201810229348A CN108684021A CN 108684021 A CN108684021 A CN 108684021A CN 201810229348 A CN201810229348 A CN 201810229348A CN 108684021 A CN108684021 A CN 108684021A
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CN
China
Prior art keywords
regulation
data
information
data receiver
intersection
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Granted
Application number
CN201810229348.6A
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Chinese (zh)
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CN108684021B (en
Inventor
李淑荣
周全
邓攀
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Qingdao Hisense Electronics Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Priority to CN201810229348.6A priority Critical patent/CN108684021B/en
Publication of CN108684021A publication Critical patent/CN108684021A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A kind of Bluetooth Low Energy communication means of the application offer and device.Bluetooth Low Energy communication means provided by the present application, including:Data sending terminal sends the information of the first regulation of all supports to data receiver;The data sending terminal receives the information for the regulation intersection that the data receiver is sent, wherein the regulation intersection is the shared regulation of first regulation and the second regulation of all supports of the data receiver;The data sending terminal sends any first protocol information to the data receiver according to the information of the regulation intersection.Bluetooth Low Energy communication means and device provided by the present application, can reduce the transmission of invalid packets, keep the interaction of equipment room more acurrate.

Description

A kind of Bluetooth Low Energy communication means and device
Technical field
This application involves Bluetooth technology field more particularly to a kind of Bluetooth Low Energy communication means and device.
Background technology
Bluetooth technology is a kind of short-distance wireless connection protocol of global general-use, because of its characteristic advantage so that bluetooth equipment There can be the advantages such as small size, low-power consumption, low cost, short distance, also reduce the wired connection of equipment room.At present in people Life in occupy more and more spaces, wait until sound equipment, TV, lamp from mobile phone, printer, laptop, keyboard, mouse The household electrical appliances such as photocontrol, then wearable device is arrived, it will be used wider and wider.The especially birth of bluetooth 5.0, improves equipment Between quality of connection and " interoperability ", allow bluetooth to become the internet of things equipment of Home Digital Application product and exponential growth more Add selection.
Interaction between bluetooth equipment is divided into two kinds, and one is general data packets, such as data cell(data pdu)Data Packet;Another kind can be related to the use of some regulations, such as control unit(control pdu)Data packet.Control pdu data packet meetings It is identified at the specified byte of packet, mutually to be distinguished with general data packet.Bluetooth specification is to control unit(control pdu)Number Specify direction according to the reply processing of packet, remove the situation that can be normally identified and handled, also mark which kind of situation can refuse, Which kind of situation is fed back to the packet etc. of nonrecognition.
In the prior art, in data cell(data pdu)Before transmission, first have to carry out in regulation two equipment Interaction, to judge that can the data cell be transmitted between both devices.The interaction of regulation is generally passed with control unit It is defeated, so, before the bluetooth equipment for locating in this connection will carry out data interaction, the interaction of control unit is carried out first, so that Data cell carries out data transmission according to control unit.Specifically, data sending terminal equipment will be sent out to data receiver end equipment Send include regulation control unit, data receiver end equipment directly receives and parses through the control unit, then judges that the regulation is No support.If data receiver is not supported, notice feedback packet is generated, data sending terminal equipment is sent to, is sent with notification data The regulation that end is sent can not obtain the support of data receiver, and data sending terminal equipment receives notice feedback and wraps and solve again Analysis.In the process, two protocol data packets that do not support mutually pass between data sending terminal equipment and data receiver end equipment It is defeated, but the two data packets, which are all invalid control pdu, to be sent.
Invention content
Invalid packets are directly transmitted by conventional Bluetooth equipment in data exchange process, increase packet loss, Cuo Bao Probability so that the data interaction accuracy rate between equipment is low.In view of this, the application provides a kind of Bluetooth Low Energy communication party Method and device, to solve the problems, such as that data transmission accuracy rate is low between existing bluetooth equipment.
The application first aspect provides a kind of Bluetooth Low Energy communication means, including:
Data sending terminal sends the information of the first regulation of all supports to data receiver;
The data sending terminal receives the information for the regulation intersection that the data receiver is sent, wherein the regulation intersection is institute State the shared regulation of the first regulation and the second regulation of all supports of the data receiver;
The data sending terminal sends any first protocol information according to the information of the regulation intersection and is connect to the data Receiving end.
The application second aspect provides a kind of Bluetooth Low Energy communication device, including:First sending module, receiving module and Second sending module, wherein
First sending module is used to send the information of the first regulation of all supports to data receiver;
The receiving module is used to receive the information for the regulation intersection that the data receiver is sent, wherein the regulation intersection is The shared regulation of all first regulations and all second regulations of data receiver;
Second sending module is used to send the information of any first regulation to the data according to the regulation intersection Receiving terminal.
Bluetooth Low Energy communication means and device provided by the present application, are connect by establishing BLE with bluetooth equipment, data hair Sending end sends the information of the first regulation of all supports to data receiver, receives the letter for the regulation intersection that data receiver is sent Breath, makes data sending terminal establish regulation intersection data with data receiver and contacts.Data sending terminal is initiating any described first When regulation, the information of any first regulation is sent to the data receiver according to the regulation intersection.In this way, can basis Regulation intersection, it is determined whether it is sent, it is existing to solve to reduce the invalid interaction between bluetooth equipment as far as possible The low problem of data transmission accuracy rate between bluetooth equipment.
Description of the drawings
Fig. 1 is the flow diagram of Bluetooth Low Energy communication means embodiment one provided by the present application;
Fig. 2 is the flow diagram between data sending terminal equipment and bluetooth equipment in the prior art;
Fig. 3 is the flow diagram of Bluetooth Low Energy communication means provided by the present application;
Fig. 4 is the structural schematic diagram of Bluetooth Low Energy communication device provided by the present application.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended The example of consistent device and method of some aspects be described in detail in claims, the application.
It is the purpose only merely for description specific embodiment in term used in this application, is not intended to be limiting the application. It is also intended to including majority in the application and "an" of singulative used in the attached claims, " described " and "the" Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.Depending on context, such as Word used herein " if " can be construed to " ... when " or " when ... " or " in response to determination ".
A kind of Bluetooth Low Energy communication means of the application offer and device interact accuracy rate to solve existing bluetooth equipment Low problem.It obtains the intersection for the regulation that the equipment to be interacted is supported in advance on the basis of keeping former function, when having When the request that regulation is initiated, if detecting the regulation not when among above-mentioned intersection, a group packet is abandoned, initiating for task is terminated, The invalid interaction of equipment room is reduced, reduces packet loss, Packet Error Rate so that the interaction between equipment is more accurate.
The technical solution of the application is described in detail with specifically embodiment below.These specific implementations below Example can be combined with each other, and same or analogous concept or process may be repeated no more in some embodiments.
This method is applied to the radio network configuration equipment with BLE functions, which can be that fixation is set It is standby, can also be other mobile devices.Bluetooth is a kind of wireless technology standard, be may be implemented between fixed equipment, mobile device Short-range data exchange.Bluetooth defines the protocol stack of standard, and aiming at, which allows to follow the application of specification, can carry out mutually Alternate operation.
Before the bluetooth equipment of the present embodiment carries out data transmission, first have to carry out a group network process.Organizing network process refers to Wireless device and the bluetooth equipment of surrounding form the process of a network, and the wireless device refers to hand bluetooth-capable Machine, tablet, blue Tooth remote controller, laptop, intelligent wearable device etc., the bluetooth equipment include bluetooth headset, intelligently wear Wear equipment, Bluetooth adapter, bluetooth warner either smart home device etc..Data transmission procedure refers to wireless device and net The process of bluetooth equipment transmission data in network.
The data sending terminal and data receiver that the present embodiment is mentioned all refer to wireless device with the above function or indigo plant Tooth equipment.
Fig. 1 is the flow diagram of Bluetooth Low Energy communication means embodiment one provided by the present application.Fig. 1 is please referred to, this Embodiment provide method, may include:
S101, BLE is established with data receiver(Bluetooth Low Energy, Bluetooth Low Energy)Connection.
When Bluetooth device operation, there are mainly three types of states, respectively broadcast, scan, connection.It, can root in broadcast state It is broadcasted according to preset broadcasting frequency, to be found by other bluetooth equipments.In scanning mode, meeting basis is pre-set Scan frequency and scanning window be scanned, to find other bluetooth equipments.It, can be according to preset in connection status Time interval carries out the data interaction communication of two bluetooth equipments.Wireless device enters search pattern, and the bluetooth for searching for surrounding is set It is standby, it after searching bluetooth equipment, establishes BLE with it and connect, which is switched by scan pattern for transceiver mode.
S102, data sending terminal send the information of the first regulation of all supports to data receiver.
At the beginning of establishing connection, data sending terminal sends the first regulation of all supports(procedure)Information to number According to receiving terminal.Wherein, the data packet that first regulation uses belongs to control protocol data cell(control pdu), can lead to The mark for crossing parsing specific position distinguishes they and general data packet.
Specifically, for Bluetooth specification V4.2, in some embodiments, the first regulation is in the regulation that link layer is supported Feature exchange regulation(Feature Exchange Procedure), interaction is that two bluetooth equipments are respectively under connected state Controller(controller)The feature of support.Feature specifically includes encryption technology used in BLE(LE Encryption ), Connecting quantity request(Connection Parameters Request), extension refusal instruction(Extended Reject Indication), subordinate start exchange(Slave-Initiated Festures Exchange), Ping reports used in BLE Text(LE Ping), data length update(Data Length Update), link layer privacy(LL Privacy)And extension is swept Retouch device filter strategy(Extended Scanner Filter Policies)8 kinds.The spy that different bluetooth equipments is supported Sign is one or more of described 8 kinds.
Further, LL Privacy, Extended Scanner Filter two kinds of features of Policies use when Section is before establishing and connecting, i.e. broadcast state, the use of remaining regulation is all in connection status.So upon establishment of a connection, It is not necessary that the two features are initiated again.In addition, extension refusal instruction(Extended Reject Indication)It is main to use Refuse other side after the data packet for receiving some regulation of data receiver.
So the feature that can be initiated in data sending terminal, which exchanges regulation, encryption technology regulation(LE Encryption Procedure), Connecting quantity ask regulation(Connection Parameters Request Procedure), subordinate start Exchange regulation(Slave-Initiated Festures Exchange Procedure), Ping message regulations used in BLE (LE Ping Procedure), data length Regeneration rules(Data Length Update Procedure).Involved by the application And the first regulation and the second regulation generally refer to 5 kinds of features exchange it is one or several in regulations.
First regulation is the regulation that data sending terminal is supported, is contained in the range of above-mentioned listed regulation. Feature Exchange Procedure are bluetooth regulation(procedure)One kind.Some regulations are centainly propped up due to terminal device It holds, so need not detect, as version exchanges regulation(Version Exchange Procedure).
In the data packet of information for including the first regulation, the bluetooth equipment is indicated come corresponding with different bits The support situation to feature, 8 bits position respectively correspond to eight link layers feature.If supporting, corresponding bit position is 1, If not supporting, corresponding bit position is 0.The field being consequently formed carries the information for the first regulation that bluetooth equipment is supported. When data sending terminal sends the data packet to data receiver, the support situation of the first regulation will be notified to data receiver End.
S103, the data sending terminal receive the information for the regulation intersection that the data receiver is sent, wherein the rule Journey intersection is the shared regulation of first regulation and the second regulation of all supports of the data receiver.
Specifically, data receiver passes through solution after receiving the first protocol data packet that all data sending terminals are supported Analysis obtains the protocol data in the first protocol data packet.Wherein, Feature Exchange Procedure regulations refer to link The regulation that layer is supported, the purpose of interaction is to take a respective intersection for supporting item set in link both ends, in order to follow-up Data transmission.
The feature that different data receivers is supported exchanges regulation and is different.The institute that data receiver is supported it There is the second regulation to be matched with the first regulation, the regulation that the two is supported generates regulation intersection, wherein the second regulation refers to The feature that the bluetooth equipment is supported exchanges regulation.The data packet is that the bluetooth equipment takes the regulation after default regulation intersection to hand over Collect data packet.
Data receiver is sent after generating regulation intersection data packet the regulation intersection data packet is sent to data End, is being received by data sending terminal, obtained and parsed.The regulation that two equipment are all supported thereby is achieved.
S104, the data sending terminal send the information of any first regulation to the number according to the regulation intersection According to receiving terminal.
If the second regulation does not meet regulation intersection, alternatively, the id information of data packet and the bluetooth for receiving the data packet The id information of equipment is inconsistent, then abandons generating data packet, also not sent to bluetooth equipment.
Further, the regulation for not meeting intersection is no longer organized packet and is sent, and in the case of following Bluetooth specification, can take the circumstances into consideration logical Know bluetooth host(Bluetooth Host).
Specifically, data sending terminal sends any first regulation to the data receiver according to the regulation intersection End, including data sending terminal initiate any first regulation, judge whether first regulation is contained in regulation intersection, if It is contained in, then first regulation is sent to data receiver;Otherwise, then described first is not sent to the data receiver Regulation.
In addition, data sending terminal sends any first regulation to the data receiver according to the regulation intersection, The first regulation in regulation intersection is only initiated including data sending terminal to data receiver.
And then when determining regulation not in intersection packet, no longer group packet is sent, and terminates initiation task.
Method provided in this embodiment is established regulation intersection data with data receiver by data sending terminal and is contacted, When having regulation to initiate request, first regulation is sent to the data receiver according to the regulation intersection.In this way, can basis Intersection regulation packet, it is determined whether group packet is sent, and to realize when regulation is not in the intersection, is not just organized packet and is sent to The purpose of bluetooth equipment, to reduce the invalid interaction between bluetooth equipment as far as possible.
Low-power chip awakening method provided by the present application is illustrated with reference to specific example.
Assuming that data sending terminal is by the information of data length Regeneration rules(Data Length Update Procedure)It is sent in bluetooth equipment.
It is as shown in Figure 2 in the prior art, after data sending terminal equipment and bluetooth equipment establish connection, directly initiation Data length Regeneration rules are asked, and are generated the information packet of data length Regeneration rules, are sent to bluetooth equipment.Bluetooth equipment After receiving and parsing through data length Regeneration rules data packet, judge whether to support according to local regulation.If it does not, generating Feedback packet, and it is sent to data sending terminal equipment, then data sending terminal equipment is in the feedback for receiving and parsing through bluetooth equipment.By , as it can be seen that the prior art is not in the case where bluetooth equipment supports data length Regeneration rules, generation data packet is simultaneously sent for this, In this way, the transmission between causing the equipment of invalid packets using existing method.
As shown in figure 3, by Bluetooth Low Energy communication means provided by the present application, by all spies of data sending terminal support The information that sign exchanges regulation generates the first protocol data packet, and is sent to the bluetooth equipment established a connection;Bluetooth equipment connects The first protocol data packet is received and parsed, is matched with local regulation, and generates regulation intersection data packet, is sent to data transmission End equipment.In this way, data sending terminal equipment and bluetooth equipment set up regulation intersection.When data sending terminal equipment has data long again When spending the initiation of Regeneration rules, the regulation is now judged whether in above-mentioned regulation intersection data packet, if it is not, it is long not generate data then Regeneration rules data packet is spent, the initiation of the regulation is abandoned.
Corresponding with the embodiment of aforementioned Bluetooth low power loss communication method, present invention also provides Bluetooth Low Energy communications to fill The embodiment set.
The embodiment of the application Bluetooth Low Energy communication device can be applied on the wireless device.
Fig. 4 is the structural schematic diagram of bluetooth controller power consumption control apparatus embodiment one provided by the present application.Please refer to figure 4, Bluetooth Low Energy communication device provided in this embodiment, including:Link block 410, the first sending module 420, receiving module 430 and second sending module 440, wherein
The link block 410 is connect for establishing BLE with data receiver;
First sending module 420 sends the information of the first regulation of all supports to bluetooth equipment;
The receiving module 430, the regulation intersection sent for receiving the data receiver, wherein the regulation intersection is institute There is the shared regulation of first regulation and all second regulations of data receiver;
Second sending module 440, for sending the information of any first regulation according to the regulation intersection described in Data receiver.
Device provided in this embodiment, can be used for execute Fig. 1 shown in embodiment of the method technical solution, realization principle with Technique effect is similar, and details are not described herein again.
Further, the link block 410 is specifically used for sending configuring request to neighbouring wireless network node;With And the equipment received near arbitrary is directed to the confirmation message that configuring request returns, and is established with the bluetooth equipment for meeting preset condition BLE connections;
Alternatively, the link block 410, is specifically used for receiving the request that wireless network node nearby sends configuration, transmission is directed to The confirmation message of configuring request is established BLE with the bluetooth equipment of healing preset condition and is connect.
The sending module 420 is specifically used for sending the first regulation that all data sending terminals are supported(procedure)Number Data receiver is arrived according to packet.Wherein, the data packet that first regulation uses belongs to control protocol data cell(control pdu), they and general data packet can be distinguished by parsing the mark of specific position.
The receiving module 430 is specifically used for receiving the information of the regulation intersection sent by data receiver, obtains data The regulation intersection that transmitting terminal and data receiver are all supported.
Second sending module 440, for sending any first regulation to the number according to the regulation intersection According to receiving terminal.
The foregoing is merely the preferred embodiments of the application, not limiting the application, all essences in the application With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of the application protection god.

Claims (9)

1. a kind of Bluetooth Low Energy communication means, which is characterized in that including:
Data sending terminal sends the information of the first regulation of all supports to data receiver;
The data sending terminal receives the information for the regulation intersection that the data receiver is sent, wherein the regulation intersection is institute State the shared regulation of the first regulation and the second regulation of all supports of the data receiver;
The data sending terminal sends any first protocol information according to the information of the regulation intersection and is connect to the data Receiving end.
2. according to the method described in claim 1, it is characterized in that, first regulation is used to indicate data sending terminal link layer The regulation of support, second regulation are used to indicate the regulation of data receiver link layer support.
3. according to the method described in claim 1, it is characterized in that, the data sending terminal according to the regulation intersection information Any first regulation is sent to the data receiver, is specifically included:
Data sending terminal initiates any first regulation, judges whether first regulation is contained in regulation intersection, if packet It is contained in, then the information of first regulation is sent to data receiver;Otherwise, then not to described in data receiver transmission The information of first regulation.
4. according to the method described in claim 1, it is characterized in that, the data sending terminal according to the regulation intersection letter Breath sends the information of any first regulation to the data receiver, specifically includes:
Data sending terminal is sent in any first regulation in the regulation intersection to data receiver.
5. according to the method described in claim 1, it is characterized in that, the data sending terminal sends the first regulation of all supports To data receiver, specifically include:
The information of all first regulations is formed into a data packet;
Data sending terminal sends the data packet to the data receiver.
6. according to the method described in claim 1, it is characterized in that, in execute that the data sending terminal sends all supports the Before the information of one regulation to data receiver step, including:BLE is established with the data receiver to connect.
7. a kind of Bluetooth Low Energy communication device, which is characterized in that including:First sending module, receiving module and second send Module, wherein
First sending module is used to send the information of the first regulation of all supports to data receiver;
The receiving module is used to receive the information for the regulation intersection that the data receiver is sent, wherein the regulation intersection is The shared regulation of all first regulations and all second regulations of data receiver;
Second sending module is used to send the information of any first regulation to the data according to the regulation intersection Receiving terminal.
8. device according to claim 7, which is characterized in that second sending module further includes judgment module, wherein The judgment module is used to initiate any first regulation of the data sending terminal, judge first regulation whether include In in regulation intersection, if being contained in, the information of first regulation is sent to data receiver;Otherwise, not to the number The information of first regulation is sent according to receiving terminal.
9. device according to claim 7, which is characterized in that described device further includes link block, the link block It is connect for establishing BLE with the data receiver.
CN201810229348.6A 2018-03-20 2018-03-20 Bluetooth low-power-consumption communication method and device Active CN108684021B (en)

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CN108684021B CN108684021B (en) 2021-06-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109451477A (en) * 2018-12-18 2019-03-08 东莞市韵茂电子科技有限公司 Bluetooth communication encryption method for intelligent equipment
CN110572387A (en) * 2019-09-04 2019-12-13 大唐半导体科技有限公司 link layer processing method
CN111788836A (en) * 2020-02-03 2020-10-16 深圳市汇顶科技股份有限公司 Data transmission method and BLE equipment
WO2025112018A1 (en) * 2023-11-30 2025-06-05 华为技术有限公司 Video transmission method and device

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Publication number Priority date Publication date Assignee Title
US20050120119A1 (en) * 2003-12-01 2005-06-02 Microsoft Corporation Smart scan for bluetooth pan devices
CN105704252A (en) * 2016-04-26 2016-06-22 青岛海信电器股份有限公司 Low-power-consumption bluetooth equipment data transmission method and device
CN105792109A (en) * 2016-03-26 2016-07-20 上海斐讯数据通信技术有限公司 Bluetooth equipment connection processing method and system based on Linux system

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Publication number Priority date Publication date Assignee Title
US20050120119A1 (en) * 2003-12-01 2005-06-02 Microsoft Corporation Smart scan for bluetooth pan devices
CN105792109A (en) * 2016-03-26 2016-07-20 上海斐讯数据通信技术有限公司 Bluetooth equipment connection processing method and system based on Linux system
CN105704252A (en) * 2016-04-26 2016-06-22 青岛海信电器股份有限公司 Low-power-consumption bluetooth equipment data transmission method and device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109451477A (en) * 2018-12-18 2019-03-08 东莞市韵茂电子科技有限公司 Bluetooth communication encryption method for intelligent equipment
CN110572387A (en) * 2019-09-04 2019-12-13 大唐半导体科技有限公司 link layer processing method
CN111788836A (en) * 2020-02-03 2020-10-16 深圳市汇顶科技股份有限公司 Data transmission method and BLE equipment
CN111788836B (en) * 2020-02-03 2022-08-02 深圳市汇顶科技股份有限公司 Data transmission method and BLE equipment
WO2025112018A1 (en) * 2023-11-30 2025-06-05 华为技术有限公司 Video transmission method and device

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