CN102612173B - The means of communication between multi mode terminal and communication module thereof - Google Patents
The means of communication between multi mode terminal and communication module thereof Download PDFInfo
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- CN102612173B CN102612173B CN201110024502.4A CN201110024502A CN102612173B CN 102612173 B CN102612173 B CN 102612173B CN 201110024502 A CN201110024502 A CN 201110024502A CN 102612173 B CN102612173 B CN 102612173B
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Abstract
The invention discloses the means of communication between the communication module of a kind of multi mode terminal and multi mode terminal, the method includes: S1, definition one cut-off position, one skips position, one skip bitmask；S2, one first communication module carry out CRC check coding to data；S3, this first communication module travel through this data, are entered as skipping position by the cut-off position run into, and with this, position of skipping run into is skipped bitmask step-by-step XOR, and at this data end plus this cut-off position；S4, this first communication module send the data to one second communication module；S5, this second communication module travel through this data when this data end is this cut-off position, be reduced to end position by the position of skipping run into, with this, position of skipping through step-by-step XOR run into is skipped bitmask step-by-step XOR again；S6, this second communication module carry out CRC check to these data.The present invention can use pure software mode to guarantee the correctness when transmitting data and reliability between communication module.
Description
Technical field
The present invention relates to the mechanics of communication between the communication module of a kind of multi mode terminal, particularly relate to one
The means of communication between the communication module of multi mode terminal and a kind of multimode being capable of these means of communication
Mobile phone.
Background technology
Current so-called dual-mode/multi-mode mobile phone refers to and includes two/multiple communication chip (moulds in mobile phone
Block), these communication modules can work under identical or different network schemer respectively, such as: GSM
(Global System for Mobile Communications, global system for mobile communications) network with
GSM network, GSM network and CDMA (Code Division Multiple Access, CDMA)
Network, GSM network and TD-SCDMA (Time Division-Synchronous Code Division
Multiple Access, TD SDMA) network, GSM network and WCDMA (Wideband
Code Division Multiple Access, WCDMA) network etc..
In current dual-mode/multi-mode mobile phone, these communication modules generally individually work alone.In order to save
Electricity, these communication modules are at dormant at ordinary times, need between any two communication module
During transmission data, then the sender of data will pass through by drawing the recipient interrupting waking up data up
Data to be sent are sent the recipient to data by serial ports.
But, in such data transfer, loss of data, data sometimes can be occurred because being subject to
Interference (the such as interference of electromagnetic field) and the various unpredictable mistake of change etc..At present, communication module
Between data transmission be exactly to directly transmit data as described above and wait that the other side responds mostly, will
In data transfer, contingent various uncertain mistakes account for, and therefore data are transmitted
Correctness and reliability are the most relatively low.
In order to solve the problems referred to above, some mobile phones have employed the extra mode of hardware that increases to guarantee that data pass
The correctness passed and reliability, however extra hardware is inevitable the most again can the manufacturing cost of lifting mobile phone.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the communication of dual-mode/multi-mode mobile phone in prior art
Between module, when transmitting data, correctness and reliability are the most relatively low, and use hardware mode to guarantee data
The correctness of transmission and reliability again can the defects of manufacturing cost of lifting mobile phone, it is provided that a kind of use pure soft
Part mode guarantees between communication module the logical of the multi mode terminal of the correctness when transmitting data and reliability
The means of communication between news module and a kind of multi mode terminal for realizing these means of communication.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of multi mode terminal logical
News module between the means of communication, its feature is, the method includes: S1, definition one cut-off position, one
Skipping position and and skip bitmask, it is different that position is skipped from this in this cut-off position；S2, the one of this multi mode terminal
First communication module carries out CRC (cyclic redundancy check (CRC)) check code to sent data；S3、
These data that this first communication module traversal obtains through step S2, are all entered as the cut-off position run into jumping
Cross position, bitmask step-by-step XOR is all skipped, in these data at the end of traversal with this in the position of skipping run into
End adds this cut-off position；These data obtained through step S3 are sent extremely by S4, this first communication module
One second communication module of this multi mode terminal；These data that S5, this second communication module inspection receive
Whether end is this cut-off position, only travels through this data when for this cut-off position, skips position all also by run into
Originally it was cut-off position, skipped position through the position of skipping with this step-by-step XOR skipping bitmask with this by run into
Mask step-by-step XOR again；S6, this second communication module carry out CRC to these data obtained through step S5
Verification, only sends to this first communication module when CRC check success and successfully responds.
It is preferred that this first communication module and this second communication module use same CRC to generate table respectively
Carry out CRC check coding and CRC check.
It is preferred that this CRC generation table is 16 or 32.
Wherein, this first communication module wakes up this up by the way of drawing interruption or drawing GPIO mouth simulation interruption
Then these data obtained through step S3 are sent to this second communication by the second communication module by serial ports
Module.
It is preferred that this first communication module is sending through being somebody's turn to do that step S3 obtains to this second communication module
During data, if this second communication module is without response, then this first communication module retransmits this data, works as repeating transmission
When number of times is more than a preset times, then point out this first communication module response timeout.
Wherein, this first communication module and this second communication module are the one in following communication module:
GSM communication module, CDMA communication module, TD-SCDMA communication module, WCDMA communication
Module.
The present invention also aims to provide a kind of multi mode terminal, it includes two or more communication module, its
Feature is, those communication modules have all defined a cut-off position, one skipped position and and skip bitmask,
It is different that position is skipped from this in this cut-off position；Those communication modules all include: a CRC check coding module,
For carrying out CRC check coding to sent data；One first spider module, is used for traveling through through this
These data that CRC check coding module processes, are all entered as skipping position by the cut-off position run into, will run into
Position of skipping all skip bitmask step-by-step XOR with this, at the end of these data plus this section at the end of traversal
Stop bit；One sending module and a receiver module, this sending module is for being not belonging to same with this sending module
The receiver module of one communication module sends these data through this first traversal resume module, and this receiver module is used
This receiver module of Yu Congyu is not belonging at the sending module of same communication module receive data；One second traversal
Whether module, be this cut-off position for checking the end of these data that this receiver module receives, only for
Travel through this data during this cut-off position, by run into skip position all be reduced to end position, by run into through with
Bitmask step-by-step XOR again is skipped with this in the position of skipping of this step-by-step XOR skipping bitmask；One CRC
Correction verification module, for carrying out CRC check, only at CRC to these data processed through this second spider module
These data received to this receiver module when verifying successfully from communication module send and successfully respond.
It is preferred that this CRC check coding module and this CRC check module use same CRC to generate
Table carries out CRC check coding and CRC check respectively.
It is preferred that this CRC generation table is 16 or 32.
Wherein, this sending module, by the way of drawing interruption or drawing GPIO mouth simulation interruption, wakes up up and is somebody's turn to do
Sending module is not belonging to the receiver module of same communication module, then will be through this first traversal mould by serial ports
These data that block processes send to this receiver module being not belonging to same communication module with this sending module.
It is preferred that this sending module is to the receiver module being not belonging to same communication module with this sending module
Send when these data of this first traversal resume module, if being not belonging to same communication mould with this sending module
This receiver module of block is without response, then this sending module retransmits this data, when sending times is preset more than one
During number of times, then point out this sending module response timeout.
Wherein, the one during those communication modules are following communication module: GSM communication module, CDMA
Communication module, TD-SCDMA communication module, WCDMA communication module.
The most progressive effect of the present invention is: the present invention transmits number between the communication module of multi mode terminal
According to time, on the one hand have employed CRC check technology, the cut-off position that on the other hand have employed self-defining is come
Separate each data block, accordingly even when the data of transmission are the longest, it is also possible to guarantee what data were transmitted fully
Correctness and reliability, and owing to the present invention uses the mode of pure software, therefore it is implemented as this
The cheapest.Further, in the case of the data of transmission are the longest, straight according to generator polynomial
Connect calculate CRC check code operand can be relatively big, the treatment effeciency of data also can be relatively low, therefore this
Bright preferably by look-up table CRC check technology, operand thus can be greatly reduced, improve
Data-handling efficiency.Further, the present invention, during transmission data, preferably have employed and sends out
Between the side of sending and recipient, one answers a response mode answered, and this is reliable by better ensuring that data are transmitted
Property.
Accompanying drawing explanation
Fig. 1 is the structural representation of any one communication module in this multi mode terminal of the present invention.
Fig. 2 is the flow chart of the means of communication between the communication module of this multi mode terminal of the present invention.
Detailed description of the invention
Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, to describe technical scheme in detail.
This multi mode terminal of the present invention can include two or more communication module, the present invention couple
Those communication modules work network schemer do not limit, the network schemer of those communication modules can as a example by
As: GSM, CDMA, TD-SCDMA or WCDMA etc..
In the present invention, all pre-defined in those communication modules there is a cut-off position, one skip position and
Skipping bitmask, wherein, this cut-off position should be different with this value skipping position, such as can be by
This cut-off position is defined as 0x7E, and this is skipped position is defined as 0x5A, and it is the most permissible that this skips bitmask
Arbitrarily value, such as, can skip bitmask by this and be defined as 0x20.
This cut-off position is for being artificially added at data end, to identify the end of one piece of data.This jumping
Cross position for cutting at non-data end in the middle of data being naturally occurring in data processing
Stop bit numerical value carries out assignment again, in case by mistake by those Lock-ins in follow-up data handling procedure
Cut-off bit value is identified as the end of data.This skips bitmask then in data processing certainly
The position of skipping so occurred carries out XOR process, in case cannot be to naturally going out in follow-up data handling procedure
Existing skip the position of skipping that position and assignment again occur and make a distinction.
As it is shown in figure 1, this communication module each all includes: a CRC check coding module 1,1 first
Spider module 2, one sending module 3, receiver module 4,1 second spider module 5 and a CRC
Correction verification module 6, below by with cut-off position defined above, skip position and skip the value of bitmask and be
The function of modules is described by example.
This CRC check coding module 1 is carried out for the data that will send its affiliated communication module
CRC check encodes, and data to be sent herein need to meet certain data form, such as, can be
Message of AT order or other various user-defined formats etc., the CRC check code storage that will obtain
In a core buffer.
This first spider module 2 will travel through this CRC check coding in this core buffer, due to
After CRC check coding, data may occur this cut-off position naturally that be exactly equal to define
0x7E and this skip the numerical value of a 0x5A, therefore this first spider module 2 can be met in ergodic process
To all 0x7E be all entered as 0x5A, then all 0x5A run into all are skipped bitmask with this
0x20 step-by-step XOR (assuming that the operation result of step-by-step XOR is numerical value Z), finally terminates in ergodic process
Time at data end plus this cut-off position 0x7E, to identify the end of this segment data.
This sending module 3 for the data that will process through this first spider module 2 to another as data
Receiver module in the communication module of recipient is transmitted.
This receiver module 4 is then used for from another as the sending module the communication module of data receiver
Place, receives and has sequentially passed through the CRC check coding module in this another communication module and first pass
Go through the data of the process of module.
The data that this receiver module 4 will be received by this second spider module 5 process.Due to this
Data are to have already been through the CRC check coding module in this another communication module and the first spider module
Process, therefore should be coupled with this cut-off position 0x7E at the end of these data.This is second years old
First spider module 5 can check at the end of these data, it is judged that whether have 0x7E's at this
Numerical value, if this data end is 0x7E, then illustrates that these data are that transmission is complete, can proceed
Subsequent treatment, if this data end is not 0x7E, then illustrates that these data do not transmit complete or this number
According to having lost efficacy, now this second spider module 5 no longer will carry out any subsequent treatment to these data.
Wherein, when this data end is 0x7E, these data will be carried out by this second spider module 5
All bit value 0x5A of skipping run in ergodic process are all reduced to original cut-off figure place by traversal
The all numerical value Z run into all are skipped bitmask 0x20 step-by-step again with this defined different by value 0x7E
Or, the principles well-known of initial value will be recovered according to twice XOR, when numerical value Z with 0x20 step-by-step again is different
Or will be reduced to afterwards original skip bit value 0x5A.So far, through this second spider module 5
Process after, these data have been reduced in order to the CRC check in this another communication module is compiled
Time of day after the process of code module.
This CRC check module 6 is for carrying out CRC to the data processed through this second spider module 5
Verification, if verify unsuccessfully, then illustrate data transfer make a mistake, and if verify successfully, then illustrate
Data transfer is correct, and now this communication module belonging to this CRC check module 6 will be to
Send as this another communication module of data receiver and successfully respond.
Although this CRC check coding module 1 all can directly use generation with this CRC check module 6
Multinomial realizes CRC check process, but such operand will be very big when data are longer,
Therefore, it is preferable that these two modules can use same known CRC generation table to realize CRC check
Process, this CRC generation table can select such as 16 or 32.
Wherein, the sending module at a communication module sends data to the receiver module of another communication module
Time, this sending module first passes through and draws interruption or draw in GPIO mouth (universal input/output interface) simulation
Disconnected mode, is waken up up this receiver module, is performed the transmission of data, this reception simultaneously the most again by serial ports
Module then reads this sending module by serial ports poll and sends and next data.When data send, if should
Receiver module is without response, then this sending module will resend these data, can arrange a preset times,
Such as 3 times, i.e. when this sending module retransmit these data reached 3 times time, the most no longer retransmit, but
Point out this sending module response timeout.
Below with reference to Fig. 2, with one first communication module to the process of one second communication module transmission data
As a example by, these means of communication of the present invention are described in detail, wherein, this first and second communication module
It is respectively provided with above-mentioned all functions.
Step 100, definition one cut-off position, one skips position and and skips bitmask, in this embodiment
Still as a example by above-mentioned value, i.e. this cut-off position is 0x7E, and this skips position is 0x5A, and this skips position
Mask is 0x20.
Step 101, this first communication module carries out CRC check coding to sent data.
Step 102, these data that this first communication module traversal obtains through step 101, the number that will run into
Value 0x7E is all entered as 0x5A, and all with 0x20 step-by-step XOR, the numerical value 0x5A run into is become numerical value Z,
And at the end of traversal, add cut-off bit value 0x7E at the end of these data, to identify this segment data
Terminate.
Step 103, this first communication module after waking up this second communication module in the way of drawing interruption up,
By serial ports, these data obtained through step 102 are transmitted to this second communication module, and this second
Communication module then reads this first communication module by serial ports poll and sends and next data.
Step 104, this second communication module judges whether the end of the data received is cut-off bit value
0x7E, the most then illustrate that the data received are the most errorless, enters step 105；If it is not, then recognize
Data for receiving are imperfect or lost efficacy, and enter step 106.
Step 105, this second communication module sends response to this first communication module, subsequently into step
109.Hereafter, if this first communication module does not has new task to need to process within the time of a regulation,
Then it will enter sleep state.
Step 106, this second communication module is directly ignored and has been received at this first communication module
Data, do not send any response to this first communication module, and wait that next time, row again received data.
Step 107, this first communication module does not receives the sound of this second communication module within a certain period of time
Should, then judge whether the transmission times of these data through step 102 acquisition alreadys more than such as 3 times, if
Already more than 3 times, then enter step 108；If also not less than 3 times, then return to step 103 and again hold
OK.
Step 108, points out this first communication module response timeout, and does corresponding abnormality processing, so far
Terminate this secondary data transmittance process.Hereafter, if this first communication module is the newest within the time of a regulation
Task need process, then it will enter sleep state.
Step 109, these data that this second communication module traversal obtains through step 103, the number that will run into
Value 0x5A is all reduced to 0x7E, and all with this, numerical value Z run into is skipped bitmask 0x20 step-by-step again
XOR, to be reduced to 0x5A.
Step 110, this second communication module carries out CRC check to these data obtained through step 109,
If CRC check success, then enter step 111, if CRC check failure, then enter step 112.
Step 111, this second communication module sends to this first communication module and successfully responds, so far this time
Data transfer is successfully completed, and follow-up will resolve this just data obtained through step 110 also
Carry out respective handling.
Step 112, this second communication module sends to this first communication module and unsuccessfully responds, so far this time
Data transfer terminates.
Hereafter, if this second communication module does not has new task to need to process, then within the time of a regulation
It will enter sleep state.
It addition, all functional modules involved in the present invention all can combine existing on existing hardware foundation
Some software programming means realize, therefore at this, it are implemented process and do not repeat.
In sum, when the present invention transmits data between the communication module of multi mode terminal, on the one hand use
CRC check technology, on the other hand have employed the cut-off position of self-defining to separate each data block,
Accordingly even when the data of transmission are the longest, it is also possible to guarantee correctness and reliability that data transmit fully,
And owing to the present invention uses the mode of pure software, therefore it is implemented as the cheapest.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should managing
Solving, these are merely illustrative of, and protection scope of the present invention is defined by the appended claims.This
The technical staff in field, can be to these embodiment party on the premise of without departing substantially from the principle of the present invention and essence
Formula makes various changes or modifications, but these changes and amendment each fall within protection scope of the present invention.
Claims (12)
1. the means of communication between the communication module of a multi mode terminal, it is characterised in that the method bag
Include:
S1, definition one cut-off position, one skipping position and and skip bitmask, position is skipped with this in this cut-off position
Different；
S2, one first communication module of this multi mode terminal carry out CRC check coding to sent data；
These data that S3, this first communication module traversal obtains through step S2, by equal for the cut-off position run into
Be entered as skipping position, bitmask step-by-step XOR all skipped with this in the position of skipping run into, at the end of traversal
The end of these data adds this cut-off position；
These data obtained through step S3 are sent to the one of this multi mode terminal by S4, this first communication module
Second communication module；
Whether the end of these data that S5, this second communication module inspection receive is this cut-off position, only exists
Travel through this data during for this cut-off position, be all reduced to end position, the process that will run into by the position of skipping run into
Bitmask step-by-step XOR again is skipped with this with the position of skipping of this step-by-step XOR skipping bitmask；
S6, this second communication module carry out CRC check to these data obtained through step S5, only exist
Send to this first communication module during CRC check success and successfully respond.
2. the means of communication between the communication module of multi mode terminal as claimed in claim 1, its feature
Being, this first communication module and this second communication module use same CRC generation table to carry out respectively
CRC check coding and CRC check.
3. the means of communication between the communication module of multi mode terminal as claimed in claim 2, its feature
Being, this CRC generation table is 16 or 32.
4. the means of communication between the communication module of multi mode terminal as claimed in claim 1 or 2, its
Being characterised by, this first communication module wakes up this up by the way of drawing interruption or drawing GPIO mouth simulation interruption
Then these data obtained through step S3 are sent to this second communication by the second communication module by serial ports
Module.
5. the means of communication between the communication module of multi mode terminal as claimed in claim 1 or 2, its
Being characterised by, this first communication module is sending this number obtained through step S3 to this second communication module
According to time, if this second communication module without response, then this first communication module retransmits this data, when retransmit time
When number is more than a preset times, then point out this first communication module response timeout.
6. the means of communication between the communication module of multi mode terminal as claimed in claim 1 or 2, its
Being characterised by, this first communication module and this second communication module are the one in following communication module:
GSM communication module, CDMA communication module, TD-SCDMA communication module, WCDMA communication
Module.
7. a multi mode terminal, it includes two or more communication module, it is characterised in that those communications
Module has all defined a cut-off position, one has skipped position and and skip bitmask, and position is skipped with this in this cut-off position
Different；Those communication modules all include:
One CRC check coding module, for carrying out CRC check coding to sent data；
One first spider module, these data processed through this CRC check coding module for traversal, will
The cut-off position run into all is entered as skipping position, and by the position of skipping that runs into, all with this, to skip bitmask step-by-step different
Or, at the end of these data plus this cut-off position at the end of traversal；
One sending module and a receiver module, this sending module is for being not belonging to same with this sending module
The receiver module of communication module sends these data through this first traversal resume module, and this receiver module is used for
Data are received at the sending module being not belonging to same communication module with this receiver module；
Whether one second spider module, be this for checking the end of these data that this receiver module receives
Cut-off position, only travels through this data when for this cut-off position, is all reduced to end position by the position of skipping run into,
By run into through with this skip bitmask step-by-step XOR skip position with this skip bitmask again by
Position XOR；
One CRC check module, for carrying out CRC school to these data processed through this second spider module
Test, these data only received to this receiver module when CRC check success from communication module send out
Send and successfully respond.
8. multi mode terminal as claimed in claim 7, it is characterised in that this CRC check coding module
Same CRC generation table is used to carry out CRC check coding and CRC school respectively with this CRC check module
Test.
9. multi mode terminal as claimed in claim 8, it is characterised in that this CRC generation table is 16
Position or 32.
10. multi mode terminal as claimed in claim 7 or 8, it is characterised in that this sending module passes through
Draw the mode interrupting or drawing GPIO mouth simulation interruption, wake up up and be not belonging to same communication mould with this sending module
The receiver module of block, then by serial ports by through this first traversal resume module these data send to this
Sending module is not belonging to this receiver module of same communication module.
11. multi mode terminals as claimed in claim 7 or 8, it is characterised in that this sending module to
The receiver module being not belonging to same communication module with this sending module sends through this first traversal resume module
These data time, if being not belonging to this receiver module of same communication module without response with this sending module, then
This sending module retransmits this data, when sending times is more than a preset times, then points out this sending module
Response timeout.
12. multi mode terminals as claimed in claim 7 or 8, it is characterised in that those communication modules are equal
One in following communication module: GSM communication module, CDMA communication module, TD-SCDMA
Communication module, WCDMA communication module.
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| CN105871383B (en) * | 2016-03-29 | 2020-02-11 | 上海斐讯数据通信技术有限公司 | Data cut-off bit extraction circuit, serial-parallel conversion circuit, and serial lighting circuit |
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