CN106211019A - A kind of data transmission method - Google Patents
A kind of data transmission method Download PDFInfo
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- CN106211019A CN106211019A CN201510213926.3A CN201510213926A CN106211019A CN 106211019 A CN106211019 A CN 106211019A CN 201510213926 A CN201510213926 A CN 201510213926A CN 106211019 A CN106211019 A CN 106211019A
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Abstract
The invention discloses a kind of data transmission method, it is adaptable to Bluetooth transfer techniques field；Method includes: set first state, is associated under disconnected pattern transmission for being shown under bluetooth mode the packet of transmission；One is set for indicating the type field of described protocol Data Unit type in protocol Data Unit in described packet；At least one retention in described type field is applied to represent described first state；Sender's broadcast is in the described packet of described first state；Recipient directly receives the described packet being in described first state under disconnected pattern.Technique scheme provides the benefit that: provide the Bluetooth data transfer mode under disconnected pattern on the basis of not destroying existing bluetooth data transmission form, break Bluetooth data transfer and must initially set up the limitation that bluetooth connects, promote flexibility ratio and the efficiency of transmission of data transmission.
Description
Technical field
The present invention relates to Bluetooth transfer techniques field, particularly relate to a kind of data transmission method.
Background technology
Along with the development of bluetooth interconnection technique, increasing equipment room starts to apply Bluetooth technology to enter
Row short range data transmission.But existing Bluetooth technology usually requires that equipment room initially sets up bluetooth and connects,
Could be connected by bluetooth subsequently and carry out data transmission.This way can serve the office in data transmission by band
Sex-limited, such as the transmitting scene that some volumes of transmitted data are less, if desired first pass around bluetooth and connect
The process set up, then can unnecessarily extend whole data transmission procedure.Correspondingly, transmission data it
Front firstly the need of setting up the operation that bluetooth connects, the most cumbersome for user, virtually limit
Use the flexibility ratio of Bluetooth technology transmission data, reduce the experience of user.
Summary of the invention
According to problems of the prior art, now provide the technical scheme of a kind of data transmission method, purport
The limitation that Bluetooth transmission connects must be first set up solving in prior art to transmit data under at bluetooth mode.
Technique scheme specifically includes:
A kind of data transmission method, it is adaptable to transmit data under bluetooth mode；Wherein,
Set first state, be associated to non-for being shown under bluetooth mode the packet of transmission
Transmit under connection mode；
Set one in protocol Data Unit in described packet to be used for indicating described protocol Data Unit class
The type field of type；
At least one retention in described type field is applied to represent described first state；
Sender's broadcast is in the described packet of described first state；
Recipient directly receives the described packet being in described first state under disconnected pattern.
Preferably, this data transmission method, wherein, different in defined in described type field 9 described in
Retention；
At least one in 9 described retentions is used to represent described first state.
Preferably, this data transmission method, wherein, the sending method of described packet includes:
Step S1a, described sender determines according to corresponding transmission instruction and is associated with described disconnected pattern
Transmit described packet；
Step S2a, described sender by the described retention of one of them in described type field by described
Packet is set as being placed in described first state；
Step S3a, described sender broadcasts described packet.
Preferably, this data transmission method, wherein, the method for reseptance of described packet includes:
Step S1b, the described packet being broadcasted is resolved by described recipient, to determine described number
It is in described first state according to bag；
Step S2b, described recipient directly receives described packet under disconnected pattern.
Preferably, this data transmission method, wherein, in described step S1a, if described sender according to
Corresponding transmission instruction determines that being associated with connection mode transmits described packet, then perform following step:
Step S4a, described sender, will by removing other values of described retention in described type field
Described packet is set as other the corresponding transmission states in addition to described first state；
Step S5a, described sender broadcasts described packet, and described recipient corresponding with builds
Vertical Bluetooth transmission connects, and according to the described transmission state being set, is passed by the described bluetooth having built up
Defeated connection sends described packet to corresponding described recipient.
Preferably, this data transmission method, wherein, in described step S1b, if described recipient resolves
Obtain described packet and be not at described first state, then perform following step:
Step S3b, sets up Bluetooth transmission between described recipient with described sender and is connected；
Step S4b, described recipient connects the described data of reception by the described Bluetooth transmission having built up
Bag.
Preferably, this data transmission method, wherein, in described protocol Data Unit, set at least one
Type content territory；
In described type content territory, set corresponding first assignment, be used for being instructed in the most described first
Under state, described packet continuously transmits mode；
The described mode that continuously transmits includes:
The mode using divided stator frame broadcasts described packet；And/or
The mode carrying out repeating transmission at predetermined intervals is used to broadcast described packet.
Preferably, this data transmission method, wherein, in described data transmission method, that is broadcasted is described
Packet is packaged according to the data form in bluetooth low energy consumption agreement.
Technique scheme provides the benefit that: a kind of data transmission method of application, to utilize existing indigo plant
Value reserved in the data form of regulation in tooth low energy consumption agreement is shown under disconnected pattern the data of transmission
Transmission state, provides the indigo plant under disconnected pattern on the basis of not destroying existing bluetooth data transmission form
Tooth data transfer mode, breaks Bluetooth data transfer and must initially set up the limitation that bluetooth connects, promote number
Flexibility ratio and efficiency of transmission according to transmission.
Accompanying drawing explanation
Fig. 1 is in prior art, transmits the data form schematic diagram of data under bluetooth low energy consumption agreement；
Fig. 2 is in a preferred embodiment of the present invention, sets in the data form shown in Fig. 1
The schematic diagram of the first state；
Fig. 3-4 is in the preferred embodiment of the present invention, the schematic flow sheet of a kind of data transmission method.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as the present invention's
Limit.
Bluetooth sig (Bluetooth SIG) is announced formally to adopt bluetooth 4.0 in July, 2010
Core specification (Bluetooth Core Specification Version 4.0).Bluetooth 4.0 core specification is right
Bluetooth 3.0+ specification supplement, it include a kind of low-power consumption Bluetooth function (Bluetooth Low Energy,
BLE).So-called bluetooth low energy consumption technologies, is the wireless connections of a kind of low cost, short distance, interoperable
Technology, its be operated in exempt from license 2.4GHz ISM radio frequency band (Industrial Scientific Medical,
The open frequency range using to industry, science and three principal organ of medical science).BLE technology is applicable to data and passes
Throughput rate is less and/or data transmission times less data transmits situation.
In prior art, BLE agreement defines data transmission format as shown in Figure 1, such as, define:
1) header field (Preamble) form: it takies eight bit groups (octet) and represents corresponding interior
Hold；
2) territory, access address (Access Address) form: it is corresponding that it takies 4 eight element group representations
Content；
3) protocol Data Unit (Protocol Data Unit, PDU) form, it is according to size of data,
Determine and take 2-39 eight element group representation corresponding contents；
4) CRC territory (Cyclic Redundancy Check, CRC) form, it takies 3
Individual eight element group representation corresponding contents.
Correspondingly, in prior art, as it is shown in figure 1, in protocol data unit format, BLE agreement
Further provide:
1) data header field (Header) form, it takies 2 eight bit groups, i.e. 16 (bits) tables
Show corresponding contents；
2) payload field (Payload) form, it is big according to data described in protocol Data Unit
Little determine the figure place taken.
In protocol Data Unit, LSB represents least significant bit (Lowest Significant Bit), is used for
The 0th (i.e. lowest order) in one binary digit；Correspondingly, MSB represents highest significant position (the
Most Significant Bit), for representing the n-1 position in a n bit binary number.
Correspondingly, in prior art, still as it is shown in figure 1, in above-mentioned data header field form, BLE
Agreement further provides:
1) type field (PDU Type) form of protocol Data Unit, it takies 4 and represents corresponding
The data type of protocol Data Unit.Such as, as shown in Figure 1: 0000 Presentation protocol data unit is
ADV_IND type, can connect omnidirectional broadcast type；0001 represents ADV_DIRECT_IND
Type, can connect directional broadcasting type；0010 represents ADV_NONCONN_IND type, i.e.
Omnidirectional broadcast type can not be connected；0110 represents ADV_SCAN_IND type, can scan without fixed
To broadcast type.
0011 represents SCAN_REQ, is used for representing carrying (payload): | ScanA6Byte | AdvA
6byte|；0100 represents SCAN_RSP, is used for representing carrying (payload): | AdvA6byte | 0-31byte
ScanRspData|；0101 represents CONNECT_REQ, is used for representing carrying (payload): | 6byte
InitA|6byte AdvA|22byte LLData|。
In the preferred embodiment of the present invention, based on the above-mentioned problems in the prior art, now provide one
Plant the technical scheme of data transmission method.
In the preferred embodiment of the present invention, in above-mentioned data transmission method, first set one first
State (The First Status).In the preferred embodiment of the present invention, it is right that this first state is used for indicating
The packet answered is associated under disconnected pattern transmission.
In the preferred embodiment of the present invention, so-called disconnected pattern, is for traditional connection transmission mould
For formula.Under traditional connection transmission mode, recipient's bluetooth equipment needs first to scan accessible
Sender's bluetooth equipment, and ask to access, both sides set up bluetooth afterwards and connect through shaking hands, and send just now
Transmission data can be connected by the bluetooth having built up, under the most traditional connection transmission mode, need first
Set up and connect, data could be transmitted.When some data volumes of transmission are less and/or transmission times less data
Time, if using traditional connection transmission mode to carry out data transmission, it is possible to whole data can be extended and pass
Defeated process, reduction efficiency of transmission, and also can increase some meaningless operations of user, such as use
Person transmits new data every time, may be required for manual operation and be connected to sender's bluetooth equipment.
Therefore, so-called disconnected pattern, refer to that recipient's bluetooth equipment is without leading to sender's bluetooth equipment
Crossing shakes hands sets up fixing bluetooth connection, i.e. can directly receive the data of sender's bluetooth equipment broadcast.
In the preferred embodiment of the present invention, as it is shown in figure 1, the agreement of the packet being transmitted at needs
Data cell (PDU) sets a type field (PDU Type), and includes at least one in type field
Retention.Such as, as it is shown in figure 1, include 0111-1111 9 retentions altogether at PDU Type.
In the preferred embodiment of the present invention, at least one in above-mentioned retention is applied to represent above-mentioned first
State.Such as, in the preferred embodiment of the present invention, as in figure 2 it is shown, select in 0111-1111
At least one value is used for representing above-mentioned first state, i.e. for representing that corresponding packet is associated in non-company
Connect and transmit under pattern.
In the preferred embodiment of the present invention, if data are coated is associated with above-mentioned first state, then send out
The side of sending is without with setting up bluetooth connection between recipient, can directly broadcast this packet.
Accordingly, in the preferred embodiment of the present invention, if data are coated is associated with above-mentioned first shape
State, then recipient is without with setting up bluetooth connection between sender, directly receiving this packet.
Said method can be applied in example as described below:
Certain shop in market uses a bluetooth equipment always worked under broadcast state, i.e. begins
Outwardly broadcasting the shop advertisement information of oneself eventually.User is when going shopping, if the bluetooth of oneself sets
Standby such as mobile phone is arranged to receive the message that bluetooth pushes, then can not be operated in extensively with above-mentioned
Broadcast and directly obtain the publicity of the above-mentioned shop being broadcasted in the case of setting up connection between the bluetooth equipment under state
Information.
Specifically, in the preferred embodiment of the present invention, apply the above data transmission method,
Realize sender and transmit the mode of data as it is shown on figure 3, specifically include:
Step S1a, according to corresponding transmission instruction, sender determines that being associated with disconnected pattern transmits data
Bag；
In the preferred embodiment of the present invention, the upper layer application (Application Layer) of transmitting terminal issues
" broadcast data under disconnected pattern " transmission instruction, or issue " under connection mode transmit number
According to " transmission instruction.
In the preferred embodiment of the present invention, as it is shown on figure 3, when upper layer application issues " in disconnected mould
Broadcast data under formula " transmission instruction time, sender according to this transmission instruction determine packet to be sent
It is associated under disconnected pattern transmission, then switches into step S2a.And when upper layer application issue " in
Under connection mode transmit data " transmission instruction time, sender according to this transmission instruction determine to be sent
Packet is associated to transmit under connecting transmission mode, then switches into step S4a.
Step S2a, packet is set as being placed in by sender by one of them retention in type field
First state；
In the preferred embodiment of the present invention, the data link layer (Link Layer) of sender is according to upper strata
The transmission instruction that application issues, configures corresponding PDU Type, i.e. to PDU Type assignment.
In the preferred embodiment of the present invention, the above " applies at least one retention to represent
One state ", its meaning is to select one or more in the retention in PDU Type, is used for representing
Above-mentioned first state.But during actual disposition, when i.e. reality carries out assignment to PDU Type, only
Compose a value.Such as, current 0111-1111 is retention, and may be incorporated for representing above-mentioned first
State.When actual assignment, to PDU Type assignment 1011, to represent that packet to be sent is closed
It is coupled under disconnected pattern transmission, or to PDU Type assignment 1100, represents equally to do.
In the preferred embodiment of the present invention, the data link layer of above-mentioned sender issues according to upper layer application
Transmission instruction, configure corresponding PDU Type, and add the data that needs send, to be formed finally
Packet to be sent.
Step S3a, sender's broadcast data packet；
Step S4a, packet, by removing other values of retention in type field, is set as by sender
Other corresponding transmission states in addition to the first state；
In the preferred embodiment of the present invention, as above and shown in Fig. 1, in existing BLE agreement,
Different assignment is defined, to represent different packet transmission state in PDU Type.The most above-mentioned
In step S4a, if the transmission instruction that the upper layer application of sender issues indicates packet to be sent to be closed
Be coupled to transmit in the connection mode, then the data link layer of sender is according to transmitting instruction accordingly,
PDU Type gives a non-reserved value outside the above-mentioned retention of removing (0111-1111), with table
Show a corresponding transmission state, be integrally formed whole packet to be sent subsequently.
Step S5a, sender's broadcast data packet, and recipient corresponding with set up Bluetooth transmission even
Connect, according to the transmission state being set, connected to corresponding recipient by the Bluetooth transmission having built up
Send packet.
In the preferred embodiment of the present invention, under traditional connection transmission mode, sender and recipient
Between need to initially set up bluetooth and connect, just can carry out data transmission.
In the preferred embodiment of the present invention, applying the above data transmission method, recipient connects
Receive the mode of data as shown in Figure 4, specifically include:
Step S1b, the packet being broadcasted is resolved by recipient, to determine that packet is in first
State；
In the preferred embodiment of the present invention, the data link layer (Link Layer) of recipient is according to reception
To packet (packet that i.e. physical layer of recipient reports) resolve, to obtain this packet
PDU Type.
In the preferred embodiment of the present invention, as shown in Figure 4, if recipient is according to the PDU of packet
Type is known this packet to be under the first state to be transmitted, i.e. this packet passes with disconnected pattern
Defeated, then go to step S2b；
In the preferred embodiment of the present invention, as shown in Figure 4, if recipient is according to the PDU of packet
Type knows that this packet is under non-first state transmission, i.e. this packet and transmits with connection mode, then
Go to step S3b.
Step S2b, recipient directly receives packet under disconnected pattern；
In the preferred embodiment of the present invention, if the data link layer of recipient resolves and determines to be received
Packet is associated under disconnected pattern transmission, the then upper layer application (Application of recipient
Layer) not with set up bluetooth between sender and be connected and directly receive this packet.
Step S3b, sets up Bluetooth transmission and is connected between recipient with sender；
Step S4b, recipient connects reception packet by the Bluetooth transmission having built up.
In the preferred embodiment of the present invention, if the data link layer of recipient resolves and determines to be received
Packet is associated to transmit in the connection mode, i.e. this packet is associated to existing BLE agreement
The mode of regulation is transmitted, then the upper layer application of recipient carries out data transmission with traditional connection mode.Tool
Body may include that
Receive direction sender and send Bluetooth connection request；
Set up bluetooth by repeatedly shaking hands between recipient with sender to be connected；
Recipient connects the packet receiving sender's transmission by the bluetooth having built up.
Above-mentioned bluetooth of setting up connects and transmits the scheme of packet existing a variety of realization sides in the prior art
Formula, does not repeats them here.
In the preferred embodiment of the present invention, still as it is shown in figure 1, above-mentioned in above-mentioned data header field,
Also include at least one type content territory.Type content territory is for indicating the transmission state set in type field
The most concrete continuously transmits mode.In the preferred embodiment of the present invention, in PDU Type, use phase
When the retention answered is to represent the first state, use corresponding first assignment table in type content territory
That shows data under this state continuously transmits mode.In the preferred embodiment of the present invention, due to type content
Territory can include multiple (as described hereinafter), therefore can set not in different type content territories
The first same assignment.
In one preferred embodiment of the present invention, in type content territories multiple shown in Fig. 1, wherein wrap
Include:
1) RFU: be set as reserved bit；
2) TxAdd: send flag bit；
3) RxAdd: receive flag bit；
4) Length: the total length in type content territory.
In the preferred embodiment of the present invention, according to the data transmission state determined in data header field, and
Attribute in its corresponding type content territory, it may be determined that data continuously transmit mode, such as:
1) the mode broadcast data packet of divided stator frame is used.In one preferred embodiment of the present invention, whole
Individual packet is excessive may cause it cannot send completely in once broadcast, it is therefore desirable to by its point
Bag sends.Recipient can obtain this packet not according to the information of instruction in the above-mentioned type content domain
Homosequential subpackage, and in receiver equipment, the multiple subpackages conversion received is formed complete data
Bag.
And/or
2) mode carrying out repeating transmission at predetermined intervals is used to broadcast described packet.The present invention
A preferred embodiment in, what is called repeats transmission, refers to set a time interval, and with
This time interval is intercycle, the same packet of broadcast (sites) in turn.
In sum, in technical scheme, in application BLE agreement in the PDU Type of regulation
Retention define first state, with by the packet transmitted accordingly close be coupled in disconnected pattern
Lower transmission.Then sender can configure PDU Type, and directly broadcast them according to the requirement of upper layer application
The packet of type；Recipient equally receives packet and parsing obtains PDU Type, it is not necessary to
Set up with sender and be connected the packet that can directly receive the above-mentioned type.This technical scheme can be broken existing
There is Bluetooth data transfer in technology to be necessarily dependent upon and set up the limitation that fixing bluetooth connects, improve indigo plant
The motility of tooth data transmission, simplifies the operation of user, promote Bluetooth data transfer efficiency and
The experience of user.
The foregoing is only preferred embodiment of the present invention, not thereby limit embodiments of the present invention and
Protection domain, to those skilled in the art, it should can appreciate that all utilization description of the invention
And the equivalent done by diagramatic content and the scheme obtained by obvious change, all should comprise
Within the scope of the present invention.
Claims (8)
1. a data transmission method, it is adaptable to transmit data under bluetooth mode；It is characterized in that,
Set first state, be associated to non-for being shown under bluetooth mode the packet of transmission
Transmit under connection mode；
Set one in protocol Data Unit in described packet to be used for indicating described protocol Data Unit class
The type field of type；
At least one retention in described type field is applied to represent described first state；
Sender's broadcast is in the described packet of described first state；
Recipient directly receives the described packet being in described first state under disconnected pattern.
2. data transmission method as claimed in claim 1, it is characterised in that fixed in described type field
9 different described retentions of justice；
At least one in 9 described retentions is used to represent described first state.
3. data transmission method as claimed in claim 1, it is characterised in that the transmission of described packet
Method includes:
Step S1a, described sender determines according to corresponding transmission instruction and is associated with described disconnected pattern
Transmit described packet；
Step S2a, described sender by the described retention of one of them in described type field by described
Packet is set as being placed in described first state；
Step S3a, described sender broadcasts described packet.
4. data transmission method as claimed in claim 1, it is characterised in that the reception of described packet
Method includes:
Step S1b, the described packet being broadcasted is resolved by described recipient, to determine described number
It is in described first state according to bag；
Step S2b, described recipient directly receives described packet under disconnected pattern.
5. data transmission method as claimed in claim 3, it is characterised in that in described step S1a,
If described sender determines that according to corresponding transmission instruction being associated with connection mode transmits described packet, then
Execution following step:
Step S4a, described sender, will by removing other values of described retention in described type field
Described packet is set as other the corresponding transmission states in addition to described first state；
Step S5a, described sender broadcasts described packet, and described recipient corresponding with builds
Vertical Bluetooth transmission connects, and according to the described transmission state being set, is passed by the described bluetooth having built up
Defeated connection sends described packet to corresponding described recipient.
6. data transmission method as claimed in claim 4, it is characterised in that in described step S1b,
Obtain described packet be not at described first state if described recipient resolve, then perform following step:
Step S3b, sets up Bluetooth transmission between described recipient with described sender and is connected；
Step S4b, described recipient connects the described data of reception by the described Bluetooth transmission having built up
Bag.
7. data transmission method as claimed in claim 1, it is characterised in that in described protocol data list
Unit sets at least one type content territory；
In described type content territory, set corresponding first assignment, be used for being instructed in the most described first
Under state, described packet continuously transmits mode；
The described mode that continuously transmits includes:
The mode using divided stator frame broadcasts described packet；And/or
The mode carrying out repeating transmission at predetermined intervals is used to broadcast described packet.
8. data transmission method as claimed in claim 1, it is characterised in that described data transmission method
In, the described packet broadcasted is packaged according to the data form in bluetooth low energy consumption agreement.
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|---|---|---|---|
| CN201510213926.3A CN106211019A (en) | 2015-04-29 | 2015-04-29 | A kind of data transmission method |
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|---|---|---|---|
| CN201510213926.3A CN106211019A (en) | 2015-04-29 | 2015-04-29 | A kind of data transmission method |
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Family
ID=57458430
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| CN201510213926.3A Pending CN106211019A (en) | 2015-04-29 | 2015-04-29 | A kind of data transmission method |
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| CN106686531A (en) * | 2016-12-30 | 2017-05-17 | 深圳市酷浪云计算有限公司 | Method and system for realizing team motion data management |
| CN108668262A (en) * | 2017-03-27 | 2018-10-16 | 卡西欧计算机株式会社 | Communication device, communication means and recording medium |
| WO2018205154A1 (en) * | 2017-05-09 | 2018-11-15 | 华为技术有限公司 | Data processing method, terminal device and network device |
| CN110618396A (en) * | 2019-09-20 | 2019-12-27 | 国网浙江省电力有限公司电力科学研究院 | Electric meter verification method based on Bluetooth transmission |
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| CN110618396B (en) * | 2019-09-20 | 2022-01-21 | 国网浙江省电力有限公司营销服务中心 | Electric meter verification method based on Bluetooth transmission |
| CN112040062A (en) * | 2020-09-08 | 2020-12-04 | 广州市埃特斯通讯设备有限公司 | Bluetooth data information transmission method between mobile phone and OBU |
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Application publication date: 20161207 |