CN106060962A - Communication method and device - Google Patents
Communication method and device Download PDFInfo
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- CN106060962A CN106060962A CN201610477845.9A CN201610477845A CN106060962A CN 106060962 A CN106060962 A CN 106060962A CN 201610477845 A CN201610477845 A CN 201610477845A CN 106060962 A CN106060962 A CN 106060962A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a communication method and device. The method and the device are applied to a Bluetooth system. The method comprises the steps that a slave device receives a data request message sent by a master device in the last first time window after a first notice is sent; response data is determined when the data request message is a read request message; the number N of second time windows is determined according to the response data; the response data is divided into N data pieces according to the transmittable data quantity in the second time windows; and the divided data pieces are sent in a broadcasting mode after a second notice is sent; and the master device receives data in the second time windows and restores the response data sent by the slave device according to all received data. According to the method and the device, the master device and slave device carry out information interaction in the broadcasting mode; connection is unnecessarily established and maintained; the electric consumption is reduced; and the communication distance is increased.
Description
Technical field
The present invention relates to network communication technology field, particularly relate to a kind of communication means and device.
Background technology
Along with Smart Home, intelligent industrial, the development of smart mobile phone, BLE (BlueTooth Low Energy,
Low-power consumption bluetooth) application more and more extensive.In BLE technology, the two-way communication between master and slave equipment is set up
On the basis of connecting, and in order to ensure the reliability connected, it will usually introduce time-out, stream control, repeat
The mechanism such as detection, cause under the applied environment that some are severe, it is easy to communication disruption occur, when again
Need during communication to re-establish connection, add the complexity of two-way communication, and power consumption is big, Shuan Fangtong
Communication distance shortens.
Summary of the invention
It is an object of the invention to provide a kind of communication means and device, in order to by broadcast mode master and slave
Two-way communication is realized between equipment.
For achieving the above object, the invention provides technical scheme:
The present invention provides a kind of communication means, be applied in Bluetooth system from equipment, described method includes:
Last very first time window after sending the first notice receives the request of data report that main equipment sends
Literary composition；
When described request of data message is read request message, determine response data；
Determine and send quantity N of the second time window, the number of described second time window needed for described response data
Amount N is less than predetermined threshold value, and described predetermined threshold value is the maximum time window quantity can followed after single is noticed；
Transmitted data amount described response data can be divided into N number of data slice according in the second time window；
Send the second notice by broadcast mode, and pass through broadcast mode N number of after described second notice
The data slice that in second time window, transmission has divided.
The present invention also provides for a kind of communication means, the main equipment being applied in Bluetooth system, described method bag
Include:
Receiving the first notice sent from equipment, described first notices followed by least one very first time window；
Judge whether receive data in the initial time section of described very first time window；
When not receiving data in the initial time section at described very first time window, in the current very first time
To described from equipment sending data request message in the follow-up time of window；
When described request of data message is read request message, receive described the second notice sent from equipment,
Described second notices followed by least one the second time window；
Judge whether receive data in the initial time section of described second time window；
After data receiver in completing all second time windows, according to all data convert received institutes
State the response data sent from equipment.
The present invention also provides for a kind of communicator, be applied in Bluetooth system from equipment, described device bag
Include:
Message receives unit, receives main setting for last very first time window after sending the first notice
The request of data message that preparation is sent；
Data determination unit, for when described request of data message is read request message, determines number of responses
According to；
Quantity determines unit, quantity N of the second time window needed for determining the described response data of transmission,
Quantity N of described second time window is less than predetermined threshold value, and described predetermined threshold value is can to follow after single is noticed
Maximum time window quantity；
Data slice division unit, for according in the second time window can transmitted data amount by described response data
It is divided into N number of data slice；
Data slice transmitting element, for sending the second notice by broadcast mode, and notices described second
Send, in N number of second time window, the data slice divided afterwards by broadcast mode.
The present invention also provides for a kind of communicator, the main equipment being applied in Bluetooth system, described device bag
Include:
First receive unit, for receive from equipment send first notice, described first notice followed by
At least one very first time window；
First judging unit, for judging whether receive in the initial time section of described very first time window
Data；
Request transmitting unit, for when not receiving data in the initial time section of described very first time window
Time, to described from equipment sending data request message in the follow-up time of current very first time window；
Second receives unit, for when described request of data message is read request message, receive described from
The second notice that equipment sends, described second notices followed by least one the second time window；
Second judging unit, for judging whether receive in the initial time section of described second time window
Data；
Data convert unit, after the data receiver in completing all second time windows, according to all
The response data sent from equipment described in the data convert received.
By above description it can be seen that use broadcast mode to carry out information between the master and slave equipment of the present invention
Alternately, it is not necessary to set up connection, maintain connection, therefore, it is possible to decrease electric quantity consumption, extend communication distance.
Accompanying drawing explanation
Fig. 1 is a kind of communication means flow chart shown in the embodiment of the present invention；
Fig. 2 is a kind of message format schematic diagram shown in the embodiment of the present invention；
Fig. 3 is the schematic diagram of the division data slice shown in the embodiment of the present invention；
Fig. 4 is a kind of message interaction process schematic shown in the embodiment of the present invention；
Fig. 5 is the message interaction process schematic of a kind of many secondary responses shown in the embodiment of the present invention；
Fig. 6 is the another kind of communication means flow chart shown in the embodiment of the present invention；
Fig. 7 is the structural representation of the master and slave equipment shown in the embodiment of the present invention；
Fig. 8 is the structural representation of a kind of communicator shown in the embodiment of the present invention；
Fig. 9 is the structural representation of the another kind of communicator shown in the embodiment of the present invention.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Following
When description relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous
Key element.Embodiment described in following exemplary embodiment does not represent the institute consistent with the present invention
There is embodiment.On the contrary, they only with as appended claims describes in detail, the one of the present invention
The example of the apparatus and method that a little aspects are consistent.
It is only merely for describing the purpose of specific embodiment in terminology used in the present invention, and is not intended to be limiting
The present invention." a kind of " of singulative used in the present invention and appended claims, " institute
State " and " being somebody's turn to do " be also intended to include most form, unless context clearly shows that other implications.Also should
Work as understanding, term "and/or" used herein refer to and comprise one or more be associated list item
Any or all possible combination of purpose.
Although should be appreciated that may use term first, second, third, etc. various to describe in the present invention
Information, but these information should not necessarily be limited by these terms.These terms only be used for by same type of information that
This distinguishes.Such as, without departing from the present invention, the first information can also be referred to as
Two information, similarly, the second information can also be referred to as the first information.Depend on linguistic context, as in this institute
Use word " if " can be construed to " and ... time " or " when ... time " or " response
In determining ".
The embodiment of the present invention proposes a kind of communication means, and the method passes through broadcast mode between master and slave equipment
Carrying out two-way communication, reduce the complexity of communication process, and power consumption is low, communication distance increases.
Seeing Fig. 1, for an embodiment flow chart of communication means of the present invention, this embodiment is from from equipment
Communication process is described by side.
Step 101, last very first time window after sending the first notice receives the data that main equipment sends
Request message.
In the embodiment of the present invention, periodically send notice, and reserved a number of time after notice from equipment
Window, for sending data and receiving the request of data that main equipment sends.The big I of time window is according to application number
According to feature (such as, the size of packet) arrange.
In the embodiment of the present invention, receive the request of data message of main equipment transmission and according to request of data from equipment
Message is responded the operation of response data and is not completed within the same notice cycle.A notice is first passed through from equipment
Cycle receives the request of data message that main equipment sends, and then starts to respond main equipment from the next one notice cycle
Request, say, that the most complete data request process at least to complete within two notice cycles.
The embodiment of the present invention, was referred to as the first notice cycle, in this cycle by the notice cycle receiving request of data message
Notice be referred to as the first notice；The notice cycle responding request was referred to as the second notice cycle, leading in this cycle
Accuse and be referred to as the second notice.
From the time window that equipment is arranged, last time window can be reserved and receive the data that main equipment sends
Request message.From equipment last time window (below by first notice after time window be referred to as first time
Between window), it is judged that whether main equipment has a request of data, and receives main equipment in this last very first time window
The request of data message sent.This request of data message carries the MAC Address from equipment and main equipment
MAC Address, so that being currently confirmed whether by oneself from equipment to process the request of data of main equipment, meanwhile,
Would know that the request of data being by which main equipment to be sent.
Step 102, when described request of data message is read request message, determines response data.
Read-write operation is completed according to the request of main equipment from equipment.When the operation carried in request of data message
When type is read operation, determine that currently received request of data message is read request message, i.e. master devices request
Data are read from from equipment.From equipment according to solicited message (such as, the data carried this read request message
Object) determine the response data needing to provide to main equipment.
Step 103, determines and sends quantity N of the second time window, described second time needed for described response data
Quantity N of window is less than predetermined threshold value, and described predetermined threshold value is the maximum time window number can followed after single is noticed
Amount.
Specifically, the response data determining step 102 carries out message encapsulation, is packaged into reading response message,
The source MAC of this reading response message be from the MAC Address of equipment, target MAC (Media Access Control) address be main equipment
MAC Address so that main equipment knows the response data being destined to oneself according to target MAC (Media Access Control) address,
Simultaneously it is known that be which response data from equipment transmission.The load reading response message is carried concrete
Response data.Message encapsulation format sees Fig. 2.
Embodiment of the present invention Preset Time window amount threshold (abbreviation predetermined threshold value), this predetermined threshold value is that single leads to
The maximum time window quantity can followed after announcement, can be configured according to the uninterrupted of reality application.Flow is big
Bigger predetermined threshold value can be set, so that can as often as possible transmit data after single is noticed, improve data and pass
Defeated efficiency.But, this predetermined threshold value can not be infinitely great, and it arranges BLE to be observed and wants channel duration
Ask so that single is noticed and followed the data of this notice transmission and do not wants long-time busy channel.
The embodiment of the present invention, after response message is read in encapsulation, needs the data volume sent to arrange the time for this
Window quantity.Read response message and follow transmission after the second notice, therefore, transmission reading response message is used
Time window be referred to as the second time window.It is assumed that it is 10ms that unification arranges single time window size, then according to this
The secondary data volume (considering transmission rate etc.) needing to send, calculating reading response message can be at several time window
Inside complete to send.When quantity N of the second time window calculated meets or exceeds predetermined threshold value, determine list
Quantity N sending the second time window reading response message after secondary notice subtracts one equal to predetermined threshold value, remaining data
Amount can retransmit in the next one notice cycle；When quantity N of the second time window calculated is less than predetermined threshold value
Time, it is as the criterion with the quantity that Practical Calculation goes out.
Additionally, master and slave equipment can consult the greatest length of the demandable data object of single in advance, make main setting
The data volume (corresponding from the response data of equipment) of standby single request can complete to respond within a notice cycle,
I.e. read response message to complete to send within a notice cycle, send out without in being split to multiple notice cycle
Send, simplify the processing procedure from equipment.
Step 104, transmitted data amount can be divided into N number of number by described response data according in the second time window
According to sheet.
In this step, according to the data volume can transmitted in the second time window, reading response message is divided into N number of
Data slice, sees Fig. 3, and each data slice is except comprising concrete load (reading the message content of response message)
Outside, also comprising time window head, this time window head portability time window identifies, and is used for which represents
Time window.
Step 105, sends the second notice by broadcast mode, and passes through broadcast mode after described second notice
Send, in N number of second time window, the data slice divided.
Can be in the first next notice cycle noticing the cycle from equipment, in the i.e. second notice cycle, transmission is drawn
The data slice divided.Specifically, send the second notice by broadcast mode, it is spaced certain frame period (such as,
In bluetooth standard, the interframe of regulation BLE is divided into 150 microseconds) after, send in N number of second time window and draw
Also certain frame period is reserved between divided data sheet, and adjacent second time window.It should be added that,
If cannot not send completely within a notice cycle from the response data of equipment, then can be within the next one notice cycle
Continue to send, do not repeat them here.
From equipment after completing response data transmission, second time window can be reserved and send out for receiving main equipment
The new request of data message sent, i.e. returns step 101 and continues executing with.
See Fig. 4, for the mutual schematic diagram of a kind of master and slave equipment shown in the embodiment of the present invention.It is assumed that from
When equipment sends the first notice, local data to be sent, then only follow one the after noticing first
One time window 1, from equipment in very first time window 1, receives the read request message 1 that main equipment sends.Determine
Needing the response data sent, encapsulation is read response message 1 (carrying response data), is determined for sending response
Second time window quantity of data is 1, i.e. reads response message and can complete to send in second time window.
Sending the second notice, the second time window 1 after noticing second sends reads response message 1；Reserved second time
Window 2, receives the read request message 2 that main equipment sends, by that analogy.
In order to avoid message disordering, the embodiment of the present invention increases serial number in the mutual message of master and slave equipment,
I.e. main equipment carries serial number in the request of data message sent, from equipment at the data response message responded
(such as, reading response message) carries identical serial number.Therefore, send out when receiving main equipment from equipment
During the request of data message sent, can first obtain the serial number carried in request of data message, it is judged that currently connect
The request of data message received is the most legal.
Specifically, obtain in request of data message the serial number (being called for short First ray number) carried, it is judged that this is the years old
Request of data message (the request of data report that serial number is correct whether one serial number is properly received less than the last time
Literary composition) serial number (being called for short the second serial number) that carries.
Can process in the following several ways according to judged result: when First ray number is equal to the second serial number,
Resend the data response message (such as, the last reading response message sent) of last time；When the first sequence
When row number are more than the second serial number, illustrate that sequence of message number is correct, process current request of data message, i.e.
Perform step 102～step 105；When First ray number is less than the second serial number, message disordering is described, logical
Know that main equipment resends correct request of data message.
Specifically, in one embodiment, send the 3rd notice by broadcast mode, in noticing the 3rd
Carry the MAC Address of the main equipment of last the second correct serial number and transmission request of data message, with
When making main equipment confirm self to need retransmission data request message according to MAC Address, take in noticing according to the 3rd
Second serial number of band redefines serial number (such as, the second Serial No. 5, then this Serial No. 5+1=6),
Resend request of data message.
In another embodiment, send the 3rd notice from equipment by broadcast mode, notice the 3rd
After time window (be called for short the 3rd time window) in, send data re-transmitting order, these data by broadcast mode
Retransmit the MAC Address of the main equipment carrying the second serial number and transmission request of data message in order, so that
When main equipment confirms self to need retransmission data request message according to MAC Address, according to the second serial number again
Send request of data message.
The volatibility of the message in order to avoid being sent by broadcast mode, is especially read response message and (carries sound
Answer data), main equipment carries response times M in the read request message sent, and completes for the first time from equipment
After response data sends, obtain response times M carried in read request message, then send M-1 to main equipment
Secondary response data, and within the second different notice cycles, complete M-1 transmission, see Fig. 5.
Main equipment is except sending in addition to read request message to from equipment, it is also possible to send write request to from equipment
Message (action type carried in request of data message is write operation).From equipment without for write request report
Literary composition sends special write response message, can carry the serial number of this write request message in subsequent advertisement, with
Main equipment is made to judge whether according to the serial number carried in noticing consistent with the serial number of the write request message sent,
If consistent, illustrate to have been received by the data of write from equipment；If inconsistent, illustrate this time to write failure, example
As, possible message disordering, it is desirable to main equipment resends write request message.
Certainly, in the aforementioned response to read request message, it is also possible to directly carrying reading in noticing second please
Seek the serial number of message, so that whether the serial number during main equipment is noticed according to second i.e. can determine that reading data
Success, without analyzing the serial number reading to carry in response message again.
Seeing Fig. 6, for an embodiment flow chart of communication means of the present invention, this embodiment is from main equipment
Communication process is described by side.
Step 601, receive from equipment send first notice, described first notice followed by least one first
Time window.
Step 602, it is judged that whether receive data in the initial time section of described very first time window.
Step 603, when not receiving data in the initial time section at described very first time window, current
To described from equipment sending data request message in the follow-up time of one time window.
See the aforementioned description from equipment side, from equipment send first notice after can follow at least one first
Time window.Main equipment receive first notice after, it is judged that very first time window initial time section (usually
Several leading time slot of very first time window) in whether receive data.When the initial time section at very first time window
Inside it is not received by when the data that equipment sends, determines that current very first time window is from reserved last of equipment
One very first time window, main equipment can be asked to from equipment sending data within the remaining time of this very first time window
Seek message.The encapsulation format of request of data message sees Fig. 2, and wherein, target MAC (Media Access Control) address is from equipment
MAC Address, source MAC is the MAC Address of main equipment, carries needs and pass to from equipment in load
The information reached.
Step 604, when described request of data message is read request message, receive described send from equipment the
Two notice, and described second notices followed by least one the second time window.
Main equipment can carry action type (read operation/write operation) in the request of data message sent.Work as number
When being read operation according to the action type carried in request message, current data request message is read request message.
Main equipment receives the reading response message responded from equipment according to this read request message.As it was previously stated, exist from equipment
Sending after second notice and read response message, this reading response message is distributed in multiple second times after the second notice
In window.
Step 605, it is judged that whether receive data in the initial time section of described second time window.
Step 606, after the data receiver in completing all second time windows, according to all data received
The described response data sent from equipment of reduction.
Main equipment receives and reduces the reading response message sent from equipment after all data, and main equipment can obtain this reading
Serial number in response message, if this serial number is consistent with the serial number in the read request message that oneself sends,
Then obtain the response data reading to carry in response message；Otherwise, abandon reading response message, wait from equipment root
The reading response message resend according to response times M, if the most incorrect after M secondary response, then can weigh
New transmission read request message.
As it was previously stated, in order to avoid message disordering, the serial number of request of data message detected not from equipment
Time correct, it is notified that main equipment resends request of data message.Main equipment receives the repeating transmission sent from equipment
The notice of request of data message, specifically can be received by following two mode:
In one embodiment, main equipment receives the 3rd notice sent from equipment, takes in the 3rd notice
Second serial number of the request of data message that band was properly received from equipment the last time and send number to from equipment
MAC Address according to the main equipment of request message.
In another embodiment, main equipment receives the 3rd notice sent from equipment, and in this threeway
After announcement the 3rd time window receive from equipment send data re-transmitting order, this data re-transmitting order is carried from
Second serial number of the request of data message that equipment the last time is properly received and to please from equipment sending data
Seek the MAC Address of the main equipment of message.
When after the notice receiving retransmission data request message by the way, it is judged that when forward direction is sent out from equipment
The MAC Address sending the main equipment of request of data message is the most identical with the MAC Address of this main equipment, if
Identical, illustrate to need this main equipment to process.Obtain the second serial number of carrying in notice, it is judged that this is the years old
The First ray number whether two serial numbers are sent to from the request of data message of equipment with the last time is identical,
If it is different, explanation message disordering, main equipment needs to redefine serial number, such as, at the second serial number
On the basis of add one and obtain new serial number, resend request of data report according to this serial number redefined
Literary composition.
As it was previously stated, main equipment is except sending in addition to read request message to from equipment, it is also possible to from equipment
Send write request message, be sent to from setting also in send last time window after noticing from equipment in
Standby.This write request message carries the data write from equipment, encapsulation format as in figure 2 it is shown, wherein,
Target MAC (Media Access Control) address is the MAC Address from equipment to be write, and source MAC is the MAC of main equipment
Address, carries data to be write in load.The embodiment of the present invention by arranging the greatest length of data object,
The data volume making the write request message of main equipment controls in a time window, when the data needing write are more
Time, can realize by repeatedly sending write request message.
The safety mutual in order to ensure broadcasting packet, the connection that main equipment can define according to existing bluetooth standard
Process is set up and the connection from equipment (should be connectable device from the type of equipment), according to actual encryption/
Checking demand obtains ex curia key in connection procedure, such as, LTK (Long-Term Key,
Long term keys), CSRK (Connection Signature Resolving Key, connect signature verification key),
Then, disconnect and the connection from equipment.In the bidirectional broadcast of follow-up master and slave equipment is mutual, can be by upper
State key encryption/checking.Visible, in order to improve safety, the embodiment of the present invention is minimum by once connecting
Complete key agreement, i.e. solve safety issue, meanwhile, normal information will not be produced alternately extra
Burden.
Furthermore, it is necessary to especially it is emphasized that all interactions in the embodiment of the present invention are all at same letter
Road completes, and therefore, has saved channel resource.
By foregoing description it can be seen that use broadcast mode to carry out between the master and slave equipment of the embodiment of the present invention
Information is mutual, it is not necessary to set up connect, maintain connect, therefore, reduce electric quantity consumption, extend communication away from
From.
Corresponding with the embodiment of aforementioned communication method, present invention also offers the embodiment of communicator.
The embodiment of communicator of the present invention can be applied at main equipment or from equipment.Device embodiment is permissible
Realized by software, it is also possible to realize by the way of hardware or software and hardware combining.As a example by implemented in software,
As the device on a logical meaning, it is by corresponding in the processor run memory of its place equipment
Computer program instructions is formed.For hardware view, as it is shown in fig. 7, for communicator institute of the present invention
At a kind of hardware structure diagram of equipment, in addition to the processor shown in Fig. 7 and nonvolatile memory,
In embodiment, the equipment at device place is generally according to the actual functional capability of this equipment, it is also possible to include other hardware,
This is repeated no more.
Refer to Fig. 8, for the structural representation of the communicator in one embodiment of the invention.This communicator
Determine that unit 803, data slice divide list including message reception unit 801, data determination unit 802, quantity
Unit 804 and data slice transmitting element 805, wherein:
Message receives unit 801, receives main setting for last very first time window after sending the first notice
The request of data message that preparation is sent；
Data determination unit 802, for when described request of data message is read request message, determines number of responses
According to；
Quantity determines unit 803, quantity N of the second time window needed for determining the described response data of transmission,
Quantity N of described second time window is less than predetermined threshold value, and described predetermined threshold value is can to follow after single is noticed
Maximum time window quantity；
Data slice division unit 804, for according in the second time window can transmitted data amount by described response data
It is divided into N number of data slice；
Data slice transmitting element 805, for sending the second notice by broadcast mode, and notices described second
Send, in N number of second time window, the data slice divided afterwards by broadcast mode.
Further, described device also includes:
Serial number acquiring unit, for before described data determination unit 802 determines response data, obtains
The First ray number carried in described request of data message；
Serial number judging unit, for judging the number whether described First ray number is properly received less than the last time
According to the second serial number carried in request message；
Retransmitting notification unit, for when described First ray number is less than described second serial number, notice is described
Main equipment resends request of data message.
Further,
Described repeating transmission notification unit, specifically for sending the 3rd notice by broadcast mode, the described 3rd notices
In carry described second serial number and send the MAC Address of main equipment of described request of data message so that
When described main equipment confirms self to need retransmission data request message according to described MAC Address, according to described the
Two serial numbers resend request of data message；Or, send the 3rd notice by broadcast mode；Described
In the 3rd time window after 3rd notice, send data re-transmitting order, described data re-transmitting by broadcast mode
Order is carried described second serial number and sends the MAC Address of main equipment of described request of data message,
During so that described main equipment confirms self to need retransmission data request message according to described MAC Address, according to institute
State the second serial number and resend request of data message.
Further, described device also includes:
Duplicate responses unit, by wide after noticing described second at described data slice transmitting element 805
After broadcast mode sends, in N number of second time window, the data slice divided, obtain in described read request message
Response times M carried；M-1 secondary response data are sent to described main equipment again for described read request message.
Refer to Fig. 9, for the structural representation of the communicator in another embodiment of the present invention.This communication fills
Put and include that first reception unit the 901, first judging unit 902, request transmitting unit 903, second receive single
Unit's the 904, second judging unit 905 and data convert unit 906, wherein:
First receives unit 901, for receiving the first notice sent from equipment, after described first notices
Follow at least one very first time window；
First judging unit 902, for judging whether connect in the initial time section of described very first time window
Receive data；
Request transmitting unit 903, for when not receiving in the initial time section of described very first time window
During data, to described from equipment sending data request message in the follow-up time of current very first time window；
Second receives unit 904, for when described request of data message is read request message, receives institute
Stating the second notice sent from equipment, described second notices followed by least one the second time window；
Second judging unit 905, for judging whether connect in the initial time section of described second time window
Receive data；
Data convert unit 906, after the data receiver in completing all second time windows, according to
The response data sent from equipment described in all data convert received.
Further, described device also includes:
Notice receives unit, for receiving the notice of the described retransmission data request message sent from equipment,
Second serial number of the request of data message being properly received from equipment the last time described in carrying in described notice
And the MAC Address to the described main equipment from equipment sending data request message；
Serial number acquiring unit, for when described when described in forward direction from the master of equipment sending data request message
When the MAC Address of equipment is identical with the MAC Address of this main equipment, obtain described second serial number；
Serial number judging unit, is used for judging whether described second serial number is sent to described with the last time
First ray number from the request of data message of equipment is identical；
Sequence number determining unit is for when described second serial number is different from described First ray number, heavy
Newly determined serial number, and resend request of data message according to the serial number redefined.
Further,
Described notice receives unit, specifically for receiving described the 3rd notice sent from equipment, and described the
Three notice in carry the second serial number of the described request of data message being properly received from equipment the last time with
And the MAC Address to the described main equipment from equipment sending data request message；Or, receive described
The 3rd notice sent from equipment；The 3rd time window after noticing the described 3rd is sent out from equipment described in receiving
The data re-transmitting order sent, carries in described data re-transmitting order and described is properly received from equipment the last time
Request of data message the second serial number and to the described main equipment from equipment sending data request message
MAC Address.
In said apparatus, the function of unit and the process that realizes of effect specifically refer in said method corresponding
Step realize process, do not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part ginseng
See that the part of embodiment of the method illustrates.Device embodiment described above is only schematically,
The wherein said unit illustrated as separating component can be or may not be physically separate, makees
The parts shown for unit can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Can select according to the actual needs part therein or
The whole module of person realizes the purpose of the present invention program.Those of ordinary skill in the art are not paying creativeness
In the case of work, i.e. it is appreciated that and implements.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. done, should be included in
Within the scope of protection of the invention.
Claims (14)
1. a communication means, be applied in Bluetooth system from equipment, it is characterised in that described method includes:
Last very first time window after sending the first notice receives the request of data message that main equipment sends；
When described request of data message is read request message, determine response data；
Determine and send quantity N of the second time window, quantity N of described second time window needed for described response data
Less than predetermined threshold value, described predetermined threshold value is the maximum time window quantity can followed after single is noticed；
Transmitted data amount described response data can be divided into N number of data slice according in the second time window；
Send the second notice by broadcast mode, and after noticing described second by broadcast mode N number of the
The data slice that in two time windows, transmission has divided.
2. the method for claim 1, it is characterised in that described determine response data before, also include:
Obtain the First ray number carried in described request of data message；
Judge to carry in the request of data message whether described First ray number is properly received less than the last time the
Two serial numbers；
When described First ray number is less than described second serial number, notify that described main equipment resends data
Request message.
3. method as claimed in claim 2, it is characterised in that described notify that described main equipment resends number
According to request message, including:
Send the 3rd notice by broadcast mode, described second serial number is carried in described 3rd notice and sends out
Send the MAC Address of the main equipment of described request of data message, so that described main equipment is according to described MAC ground
When location confirms self to need retransmission data request message, resend request of data according to described second serial number
Message；
Or,
The 3rd notice is sent by broadcast mode；In the 3rd time window after the described 3rd notices, by extensively
Broadcast mode sends data re-transmitting order, carries described second serial number and transmission in described data re-transmitting order
The MAC Address of the main equipment of described request of data message, so that described main equipment is according to described MAC Address
When confirming self to need retransmission data request message, resend request of data report according to described second serial number
Literary composition.
4. the method for claim 1, it is characterised in that described described second notice after by broadcast
After mode sends, in N number of second time window, the data slice divided, also include:
Obtain response times M carried in described read request message；
M-1 secondary response data are sent to described main equipment again for described read request message.
5. a communication means, the main equipment being applied in Bluetooth system, it is characterised in that described method includes:
Receiving the first notice sent from equipment, described first notices followed by least one very first time window；
Judge whether receive data in the initial time section of described very first time window；
When not receiving data in the initial time section at described very first time window, at current very first time window
Follow-up time in described from equipment sending data request message；
When described request of data message is read request message, receive described the second notice sent from equipment,
Described second notices followed by least one the second time window；
Judge whether receive data in the initial time section of described second time window；
After data receiver in completing all second time windows, according to all data convert received
The response data sent from equipment.
6. method as claimed in claim 5, it is characterised in that described method also includes:
Receive the notice of the described retransmission data request message sent from equipment, described notice is carried described from
Second serial number of the request of data message that equipment the last time is properly received and send number from equipment to described
MAC Address according to the main equipment of request message；
When described when described in forward direction from the MAC Address of the main equipment of equipment sending data request message and this master
When the MAC Address of equipment is identical, obtain described second serial number；
Judge whether described second serial number is sent to described from the request of data message of equipment with the last time
First ray number identical；
When described second serial number is different from described First ray number, redefine serial number, and according to weight
Newly determined serial number resends request of data message.
7. method as claimed in claim 6, it is characterised in that the repeating transmission sent from equipment described in described reception
The notice of request of data message, including:
Receive described the 3rd notice sent from equipment, described 3rd notice is carried described from equipment nearest one
Second serial number of the secondary request of data message being properly received and to described from equipment sending data request message
The MAC Address of main equipment；
Or,
Receive described the 3rd notice sent from equipment；The 3rd time window after noticing the described 3rd receives institute
State the data re-transmitting order sent from equipment, described data re-transmitting order is carried described the last from equipment
Second serial number of the request of data message being properly received and to described from equipment sending data request message
The MAC Address of main equipment.
8. a communicator, be applied in Bluetooth system from equipment, it is characterised in that described device includes:
Message receives unit, receives main equipment for last very first time window after sending the first notice
The request of data message sent；
Data determination unit, for when described request of data message is read request message, determines response data；
Quantity determines unit, quantity N of the second time window, institute needed for determining the described response data of transmission
Quantity N stating the second time window is less than predetermined threshold value, and described predetermined threshold value is can to follow after single is noticed
Big time window quantity；
Data slice division unit, for can transmitted data amount drawing described response data according in the second time window
It is divided into N number of data slice；
Data slice transmitting element, for sending the second notice by broadcast mode, and after described second notice
Send, in N number of second time window, the data slice divided by broadcast mode.
9. device as claimed in claim 8, it is characterised in that described device also includes:
Serial number acquiring unit, for before described data determination unit determines response data, obtains described
The First ray number carried in request of data message；
Serial number judging unit, for judging the number whether described First ray number is properly received less than the last time
According to the second serial number carried in request message；
Retransmitting notification unit, for when described First ray number is less than described second serial number, notice is described
Main equipment resends request of data message.
10. device as claimed in claim 9, it is characterised in that:
Described repeating transmission notification unit, specifically for sending the 3rd notice by broadcast mode, the described 3rd notices
In carry described second serial number and send the MAC Address of main equipment of described request of data message so that
When described main equipment confirms self to need retransmission data request message according to described MAC Address, according to described the
Two serial numbers resend request of data message；Or, send the 3rd notice by broadcast mode；Described
In the 3rd time window after 3rd notice, send data re-transmitting order, described data re-transmitting by broadcast mode
Order is carried described second serial number and sends the MAC Address of main equipment of described request of data message,
During so that described main equipment confirms self to need retransmission data request message according to described MAC Address, according to institute
State the second serial number and resend request of data message.
11. devices as claimed in claim 8, it is characterised in that described device also includes:
Duplicate responses unit, passes through broadcaster after noticing described second at described data slice transmitting element
After formula sends, in N number of second time window, the data slice divided, obtain in described read request message and carry
Response times M；M-1 secondary response data are sent to described main equipment again for described read request message.
12. 1 kinds of communicators, the main equipment being applied in Bluetooth system, it is characterised in that described device bag
Include:
First receives unit, and for receiving the first notice sent from equipment, described first notices followed by extremely
A few very first time window；
First judging unit, for judging whether receive number in the initial time section of described very first time window
According to；
Request transmitting unit, is used for when not receiving data in the initial time section at described very first time window,
To described from equipment sending data request message in the follow-up time of current very first time window；
Second receives unit, for when described request of data message is read request message, receives described from setting
The second notice that preparation is sent, described second notices followed by least one the second time window；
Second judging unit, for judging whether receive number in the initial time section of described second time window
According to；
Data convert unit, after the data receiver in completing all second time windows, connects according to all
The response data sent from equipment described in the data convert received.
13. devices as claimed in claim 12, it is characterised in that described device also includes:
Notice receives unit, for receiving the notice of the described retransmission data request message sent from equipment, institute
State notice is carried the described request of data message being properly received from equipment the last time the second serial number and
MAC Address to the described main equipment from equipment sending data request message；
Serial number acquiring unit, for setting as master from equipment sending data request message described in forward direction when described
When standby MAC Address is identical with the MAC Address of this main equipment, obtain described second serial number；
Serial number judging unit, be used for judging described second serial number whether be sent to the last time described from
First ray number in the request of data message of equipment is identical；
Sequence number determining unit, is used for when described second serial number is different from described First ray number, again
Determine serial number, and resend request of data message according to the serial number redefined.
14. devices as claimed in claim 13, it is characterised in that:
Described notice receives unit, specifically for receiving described the 3rd notice sent from equipment, and the described 3rd
Notice is carried the described request of data message being properly received from equipment the last time the second serial number and to
The MAC Address of the described main equipment from equipment sending data request message；Or, send out from equipment described in reception
The 3rd notice sent；The 3rd time window after noticing the described 3rd receives the described data weight sent from equipment
Say the word, described data re-transmitting order is carried the described request of data report being properly received from equipment the last time
Literary composition the second serial number and to the MAC Address of the described main equipment from equipment sending data request message.
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