CN104869545B - A kind of transmission method that grouped data group is exhaled, device and system - Google Patents
A kind of transmission method that grouped data group is exhaled, device and system Download PDFInfo
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- CN104869545B CN104869545B CN201510249669.9A CN201510249669A CN104869545B CN 104869545 B CN104869545 B CN 104869545B CN 201510249669 A CN201510249669 A CN 201510249669A CN 104869545 B CN104869545 B CN 104869545B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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Abstract
The present invention relates to a kind of transmission method that grouped data group is exhaled, device and system.This transmission method includes step：Receiving terminal receives the packet data signals from transmitting terminal, and it records and receives error data frame in packet data signals, data frame identical with the frame number of error data frame is then received next time, if the data frame in the packet data signals received for the first time is completely correct, correct data frame is then preserved, prompts to receive successfully；Judge that the data frame received again is correct, is then preserved.The system of offer includes transmitting terminal and receiving terminal, can realize that this transmission method of above procedure and system can make full use of the data that transmitting terminal issues, and couple the data to and handle together respectively, improves the success rate that grouped data group is exhaled.
Description
Technical field
The present invention relates to communication technique fields, more specifically to a kind of transmission method that grouped data group is exhaled, device
And system.
Background technology
In DMR/PDT standards, grouped data can be used to carry the data services such as IP agreement, short data agreement.Work as system
It, can be very high using the mode efficiency that group is exhaled when needing to send same group of data to multiple terminals.Such as long broadcast message, terminal liter
Grade program etc., can be exhaled using grouped data group.Grouped data group is exhaled compared with for individual calling flow, and flow is more complicated.
Grouped data group exhales relatively common way to be exactly that data sender is repeatedly retransmitted at present, but for receiving
All it is independent for end, between repeatedly retransmitting, receiving terminal usually will not be repeatedly receiving data is coupled together whole place
Reason, to improve success rate.The prior art receives terminal and does not make full use of transmitting terminal multiple in grouped data group-calling service
The data issued, success rate are very low.
Invention content
The technical problem to be solved in the present invention is, for the prior art it is above-mentioned do not make full use of transmitting terminal multiple under
The data flaw of hair provides a kind of transmission method that grouped data group is exhaled, device and system, can make full use of transmitting terminal and issue
Data, couple the data to and handle together, improve the success rate exhaled of grouped data group.
The technical solution adopted by the present invention to solve the technical problems is：Construct a kind of transmission side that grouped data group is exhaled
Method includes the following steps：
A：Receiving terminal receives the packet data signals from transmitting terminal；
B:The receiving terminal judges data frame correctness in packet data signals, if wrong data in packet data signals
Frame, then receiving terminal misregistration data frame, and step C is executed, if the data frame of packet data signals is correct, then follow the steps E；
C：The receiving terminal receives data identical with the frame number of the error data frame in packet data signals again
Frame；
D：The receiving terminal judges the data frame correctness received again, if the data frame received again correctly if execute step
Rapid E, if the data frame error received again, the number that packet data signals are received in the receiving terminal is less than pre-determined number n
When, execute the step C；
E：Correct data frame is preserved, is finished receiving.
Preferably, the method that the grouped data group is exhaled further includes receiving packet data signals in the receiving terminal
When number reaches the scheduled frequency n,
Error correcting processing is carried out to error data frame, then executes step E.
Preferably, the receiving terminal includes to error data frame progress error correcting processing：
The bit data of the receiving terminal misregistration data frame；
Judge the parity of pre-determined number n, if pre-determined number n is odd number, counts the identical all error numbers of frame number
The ratio for being 0 or 1 according to same sequential bits bit data in frame, if pre-determined number n is even number and n ＞ 3, statistics frame number is identical
The ratio that same sequential bits bit data is 0 or 1 in n-1 error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, the same sequential bits bit data is judged
It is 0, otherwise is determined as 1.
Preferably, in the step B and E, the receiving terminal judges the correct of data frame by executing CRC check program
Property.
The present invention also provides a kind of transmitting device that grouped data group is exhaled, including receiving terminal, the receiving terminal includes
Receiving module, for receiving packet data signals and exporting；
Control module is connect with the receiving module, the number in packet data signals for judging receiving module reception
It is exported according to the correctness of frame, and by correct data frame, and records error data frame in the packet data signals received, and under
Data frame identical with the frame number of error data frame is only received when primary reception packet data signals, until receive next time
Data frame is completely correct, is additionally operable to judge that whether the receiving module receives the number of packet data signals less than scheduled number
N stops receiving packet data signals if it is not, then controlling the receiving module；
Storage module is connect with the control module, for storing correct data frame.
Preferably, the control module is additionally operable to after receiving packet data signals number and reaching n times, if also error number
According to frame, then when n is odd number, then it is 0 or 1 to count same sequential bits bit data in the identical all error data frames of frame number
Ratio, when n is even number and n ＞ 3, then it is 0 to count same sequential bits bit data in the identical n-1 error data frame of frame number
Or 1 ratio judges the same sequential bits bit number if the ratio that the same sequential bits bit data is 0 is more than 0.5
According to being 0, otherwise it is determined as 1.
The present invention also provides a kind of transmitting device that grouped data group is exhaled, including receiving terminal, the receiving terminal includes storage
Module, receiving port, CPU,
The receiving port is connect with the CPU, for receiving packet data signals and exporting to the CPU；
The CPU, for executing following step：
A, packet data signals are received；
B, data frame correctness in packet data signals is judged, if wrong data frame in packet data signals, receives
End records the error data frame, and executes step c, if the data frame of packet data signals is correct, thens follow the steps e；
C, data frame identical with the frame number of error data frame in packet data signals is received again；
D, the data frame correctness received again is judged, if the data frame received again correctly thens follow the steps e, if again
The data frame error of reception executes the step when then receiving the number of packet data signals in receiving terminal less than pre-determined number n
c；
E, correct data frame is exported.
The storage module is connect with the CPU, and the correct data frame for receiving the CPU outputs simultaneously preserves.
Preferably, the CPU is after the number of receiving port reception packet data signals reaches n times, if also wrong
Data frame accidentally is then additionally operable to return the step e after executing following step,
Judge the parity of scheduled frequency n, if scheduled frequency n is odd number, the identical institute of statistics frame number is wrong
The ratio that same sequential bits bit data is 0 or 1 in data frame counts frame number phase if scheduled frequency n is even number and n ＞ 3
The ratio that same sequential bits bit data is 0 or 1 in n-1 same error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, the same sequential bits bit data is judged
It is 0, otherwise is determined as 1.
The present invention also provides a kind of Transmission systems that grouped data group is exhaled, including transmitting terminal and receiving terminal：
The transmitting terminal, for sending packet data signals, the number for sending packet data signals is scheduled frequency n, n
>1；
The receiving terminal includes storage module, receiving port, CPU,
The receiving port is connect with the CPU, for receiving packet data signals and exporting to the CPU；
The CPU, for executing following step：
A. the packet data signals from the transmitting terminal are received；
B. judge data frame correctness in packet data signals,
If wrong data frame in packet data signals, misregistration data frame, and step c is executed,
If the data frame of the packet data signals is correct, e is thened follow the steps；
c：Data frame identical with the frame number of error data frame in packet data signals is received again；
d：The data frame correctness received again is judged, if the data frame received again correctly thens follow the steps e, if again
The data frame error of reception, then when receiving the number of packet data signals in the receiving terminal less than pre-determined number n, described in execution
Step c；
e：Export correct data frame；
The storage module is connect with the CPU, and the correct data frame for receiving the CPU outputs simultaneously preserves.
Preferably, if the receiving terminal receives packet data signals number and reaches n times, the receiving terminal is in the step d
In also execute
Error correcting processing is carried out to error data frame, then executes step e；
The receiving terminal executes when carrying out error correcting processing to error data frame：
Judge the parity of scheduled frequency n, if scheduled frequency n is odd number, the identical institute of statistics frame number is wrong
The ratio that same sequential bits bit data is 0 or 1 in data frame counts frame number phase if scheduled frequency n is even number and n ＞ 3
The ratio that same sequential bits bit data is 0 or 1 in n-1 same error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, the same sequential bits bit data is judged
It is 0, otherwise is determined as 1.
Implement transmission method, the device and system that the grouped data group of the present invention is exhaled, has the advantages that：Receiving terminal
The packet data signals that transmitting terminal is sent are received, judge whether the data frame in packet data signals malfunctions, if there is data frame to go out
Mistake records error data frame in the packet data signals, if data frame is all correct, stop receive next time packet count it is believed that
Number；Receiving terminal receives the identical data frame of the frame number in packet data signals with error data frame again, and judgement receives again
Data frame correctness, if the data frame received again is correct, by the correct data frame received again preserve, if receiving again
Data frame error, then again receive packet data signals in data frame identical with the frame number of error data frame, entangle in this way
Just signal frame wrong in packet data signals, receiving terminal receive the frame with error data frame in packet data signals again
The data frame of the identical data frame of serial number rather than reception whole, just reduces the spending of receiving terminal inner buffer, fully in this way
The packet data signals that the transmitting terminal of receiving terminal reception is sent are utilized, does not need in the packet data signals of single reception and owns
Data frame all correct just receive successfully improve the success rate that grouped data group is exhaled.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 a are the structural schematic diagrams for the Transmission system that the grouped data group of first embodiment of the invention is exhaled；
Fig. 1 b are the structural schematic diagrams for the Transmission system that the grouped data group of second embodiment of the invention is exhaled；
Fig. 2 is the flow chart for the transmission method that grouped data group of the present invention is exhaled；
Fig. 3 is the method flow diagram of the bit data correctness of the misjudgment data frame of the present invention；
Fig. 4 is the first experimental result schematic diagram of the transmission method that the grouped data group of the present invention is exhaled；
Fig. 5 is the second experimental result schematic diagram of the transmission method that the grouped data group of the present invention is exhaled.
Specific implementation mode
As shown in Figure 1a, it is the structural schematic diagram for the Transmission system that grouped data group of the invention in first embodiment is exhaled,
The Transmission system that grouped data group is exhaled includes transmitting terminal 1 and receiving terminal 2.Transmitting terminal 1 is for sending packet data signals to reception
End 2, the number for sending packet data signals are scheduled frequency n, n>1, wherein transmitting terminal 1, which sends packet data signals n times, is
It is independent to carry out.Receiving terminal 2 includes receiving module 21, storage module 22 and control module 23.
Receiving module 21 is for continuously receiving packet data signals and exporting to control module 23.
Control module 23 is connect with receiving module 21, the data frame in packet data signals for judging receiving module 21
Correctness, and correct data frame is exported, and record error data frame in the packet data signals received, and next time
Data frame identical with the frame number of error data frame is only received when receiving packet data signals, until the data received next time
Frame is completely correct, is additionally operable to judge that whether the receiving module receives the number of packet data signals less than scheduled frequency n, if
No, then control receiver module 21 stops receiving packet data signals.Wherein, control module 23 is sentenced by executing CRC check program
The correctness of disconnected data frame, may determine that by CRC check program data frame in the grouped data that control module 23 receives with
Whether data frame is consistent in the packet data signals that transmitting terminal 1 is sent, if it is inconsistent, judging the grouping that receiving terminal 2 receives
Data frame is by wrong data frame.CRC check method is for other methods of calibration (such as parity check method), inspection
The very competent of error data frame is surveyed, expense is small, speed is fast, since control module 23 is received using continuous in packet data signals
The mode of data frame corrects error data frame, so greatly improve the speed of error correction in entire error correction procedure.
Storage module 22 is connect with control module 23, for storing correct data frame.
Control module 23 further include for receiving after packet data signals number reaches n times, if also error data frame,
Then judge the parity of scheduled frequency n, if n is odd number, counts same suitable in the identical all error data frames of frame number
The ratio that tagmeme bit data is 0 or 1 counts if n is even number and n ＞ 3 in the identical n-1 error data frame of frame number
The ratio that same sequential bits bit data is 0 or 1 is sentenced if the ratio that the same sequential bits bit data is 0 is more than 0.5
The fixed same sequential bits bit data is 0, otherwise is determined as 1.In comparison, it in prior art, is followed repeatedly
Erroneous bit data is found in the CRC check of ring, but recycle CRC check mean that receiving frame is carried out it is repeated multiple times
The operation time of long division operation, cost is long, causes a large amount of operation to be delayed, the method for cycle CRC check is made not answer actually
With.
As shown in Figure 1 b, it is the second structural schematic diagram for applying the Transmission system that grouped data group of the invention in example is exhaled, packet
Include transmitting terminal 1 and receiving terminal 2.Transmitting terminal 1 sends time of packet data signals for sending packet data signals to receiving terminal 2
Number is scheduled frequency n, n>1；Wherein, it is independent progress that transmitting terminal 1, which sends packet data signals n times,.Receiving terminal 2 includes receiving
Port 24, CPU25 and storage module 23.
Receiving port 23 is connect with CPU25, for receiving packet data signals and exporting to CPU25.
CPU25 is for executing following step：
A, the packet data signals from transmitting terminal 1 are received；
B, data frame correctness in packet data signals is judged, if wrong data frame in packet data signals, records
The error data frame, and step c is executed, if the data frame of packet data signals is correct, then follow the steps e；
C, data frame identical with the frame number of error data frame in packet data signals is received again；
D, the data frame correctness received again is judged, if the data frame received again correctly thens follow the steps e, if again
The data frame error of reception executes the step c then when the number for receiving packet data signals is less than pre-determined number n；
E, correct data frame is exported.
Above-mentioned CPU25 judges the correctness of data frame by executing CRC check program.
Storage module 24 is connect with CPU25, and the correct data frame for receiving CPU25 outputs simultaneously preserves.
CPU25 is after the number of receiving port reception packet data signals reaches n times, if also vicious data
Frame is then additionally operable to return the step e after executing following step,
Judge the parity of scheduled frequency n, if scheduled frequency n is odd number, the identical institute of statistics frame number is wrong
The ratio that same sequential bits bit data is 0 or 1 in data frame counts frame number phase if scheduled frequency n is even number and n ＞ 3
The ratio that same sequential bits bit data is 0 or 1 in n-1 same error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, judge that same sequential bits bit data is 0,
Otherwise it is determined as 1.
As shown in Fig. 2, in the first embodiment for the transmission method that grouped data group of the invention is exhaled, execute successively following
Step：
S1. 1 independently transmitted packet data signals of transmitting terminal are to server 2,1 independently transmitted packet data signals of transmitting terminal
Number is scheduled frequency n, n>1.
S2. receiving module 21 in receiving terminal 2 receives data frame all in packet data signals, and by all data
Frame is exported to control module 23.
S3. control module 23 judges data frame correctness in packet data signals, that is, judge in packet data signals whether
Wrong data frame, if wrong data frame in packet data signals, the 23 misregistration data of control module in receiving terminal 2
Frame, and step S4 is executed, if the data frame of packet data signals correctly thens follow the steps S8.Data frame is transmitted by transmitting terminal 1
When to during receiving terminal 2, it may malfunction, receiving terminal 2 judges grouped data after having received the packet data signals
The correctness of all data frames in signal, and correct data frame in the packet data signals is sequentially stored according to frame number
Inside receiving terminal 2.If the data frame of packet data signals is correct, 23 control receiver module 21 of control module of receiving terminal 2 stops
Packet data signals next time are received, and prompt to receive successfully.Receiving terminal 2 executes CRC check program to judge data frame
Correctness.
S4. the 23 misregistration data frame of control module in receiving terminal 2, again receive packet data signals in error number
According to the identical data frame of the frame number of frame.When receiving terminal 2 receives the packet data signals of the transmission of transmitting terminal 1 again, by the grouping
The frame number of error data frame in the packet data signals received in the frame number of data frame and step S2 in data-signal into
Row compares, the error data frame in the packet data signals received in the frame number and step S2 of the data frame that judgement receives again
Frame number it is whether consistent, if so, receiving terminal 2 receive the data frame received again and export to storage module 22, if it is not,
Then receiving terminal 2 is abandoned exporting the data frame to storage module 22.
S5. the control module 23 in receiving terminal 2 judges the data frame correctness received again, if the data frame received again
Correctly, step S8 is executed, if the data frame error received again, thens follow the steps S6.
S6. the control module 23 in receiving terminal 2 judges whether the number for receiving packet data signals reaches n times, if receiving
Receiving module 21 in end 2 receives the number of packet data signals less than scheduled frequency n time, executes the step S4.Into one
Step ground thens follow the steps S7 if the receiving module 21 of receiving terminal 2 receives packet data signals number and reaches scheduled frequency n time,
The bit data correctness of misjudgment data frame simultaneously carries out error correcting processing to erroneous bit data, and preserves correct bit
Data obtain correct data frame.
S7. the bit data correctness of the 23 misjudgment data frame of control module in receiving terminal 2, and to error bit number
According to error correcting processing is carried out, the correct data frame obtained after correction processing is exported to storage module 22.
S8. the storage module 22 in receiving terminal 2 preserves correct data frame.
S9. it finishes receiving.
Further, the bit data correctness of step S7 misjudgments data frame and to erroneous bit data carry out mistake
Correction processing includes the steps that as shown in Figure 3：
S71. the bit data of the 23 misregistration data frame of control module in receiving terminal 2.Specifically, in receiving terminal 2
After receiving module 21 has received n times packet data signals, there is the identical n groups error data frame of frame number, it will be each in this n group
The bit data of error data frame is recorded in sequence.
S72. control module 23 judges the parity of frequency n, if frequency n is odd number, thens follow the steps S73. statistics frame sequences
The ratio that same sequential bits bit data is 0 or 1 in number identical all error data frames, if frequency n is even number and n ＞ 3,
Execute the ratio that same sequential bits bit data is 0 or 1 in the identical n-1 error data frame of step S74. statistics frame numbers.
Bit data is only 0 or 1, and ratio that bit data is 0 and micro- 1 the sum of ratio are 1.It is every in each group of error data frame
All there are one corresponding sequences, such as the 1st bit data, the 2nd bit data etc. for one bit data, in mistake of statistics data frame
Same sequential bits bit data be 0 or 1 ratio, specifically for example, count each error data frame it is corresponding 1st ratio
Be in special data 0 be in 1 the 2nd bit data of ratio either 0 be either 0 or 1 in 1 the 3rd bit data of ratio ratio
Example, counts on always the bit data of last sequential bits in error data frame.
S75. control module 23 judges whether the bit data of same sequential bits is more than 0.5 for 0 ratio.If same sequence
The ratio that position bit data is 0 is more than 0.5, then judges that same sequential bits bit data is 0, otherwise be determined as 1.For example, mistake
The ratio that the bit data of same sequential bits is 1 in data frame is more than 0.5, then judges that the same sequential bits bit data is 1, if
The ratio that same sequential bits bit data is 1 in error data frame is less than 0.5, then judges that the same sequential bits bit data is 0.
Specifically, in one embodiment, transmitting terminal 1 sends packet data signals 5 times, and receiving terminal 2 is received in first time to be divided
In group data-signal, the data frame that receiving terminal 2 receives in packet data signals for the first time is as shown in table 1, the packet data signals
In frame number be 1 the 1st data frame, the 3rd data frame that frame number is 3, the 6th data frame that frame number is 6, frame number 9
The 9th data frame all there is mistake, then deposited respectively with frame number 1,3,6,9 corresponding 1st memory spaces, the 3rd inside receiving terminal 2
Store up space, the 6th memory space, the 9th memory space all will not store frames of data, and other correct data frames can all store pair
The memory space answered.
Table 1
Second of the data frame received in packet data signals of receiving terminal 2 is as shown in table 2, in second of the reception of receiving terminal 2
When packet data signals, the 62nd data frame that frame number is 6, the 92nd data frame that frame number is 9 are mistake, other data frames
It is correct, the 12nd data frame of 2 judgment frame serial number 1 of receiving terminal and the 32nd data frame that frame number is 3 are correct, just by the
12 data frames are stored to the 1st memory space, the 32nd data frame storage to the 3rd memory space.
Table 2
The data frame that receiving terminal 2 receives in packet data signals for the third time is as shown in table 3, and receiving terminal 2 receives for the third time to be divided
63rd data frame of group data-signal time frame serial number 6, the 93rd data frame that frame number is 9 are correct, and frame number is the of 8
83 data frame errors, other data frames are correct, and the 63rd data frame of 2 judgment frame serial number 6 of receiving terminal and frame number are the of 9
93 data frames are correct, just store the 63rd data frame to the 6th memory space, the 93rd data frame storage to the 9th memory space.
Table 3
The data frame that receiving terminal 2 preserves after having received packet data signals for the third time is as shown in table 4.Receiving terminal 2 executes
CRC check program, the correct rear prompt of receiving terminal 2 of data frame for verifying storage receives successfully, and no longer receives transmitting terminal 1 and send
Packet data signals.
Table 4
In another embodiment, i.e., in second group of experiment, transmitting terminal 1 sends packet data signals 5 times, and receiving terminal 2 is the
It is primary to receive that data frame in packet data signals is as shown in table 5, the 1st data frame 1, the 3rd data frame in the packet data signals,
All there is mistake in 6th data frame, the 9th data frame, then empty with frame number 1,3,6,9 corresponding 1st storages respectively inside receiving terminal 2
Between, the 3rd memory space, the 6th memory space, the 9th memory space all will not store frames of data, and other correct data frames all can
Store corresponding memory space.
Table 5
Second of the data frame received in packet data signals of receiving terminal 2 is as shown in table 6, in second of the reception of receiving terminal 2
22nd data frame of packet data signals time frame serial number 2, the 42nd data frame that frame number is 4, the 62nd data that frame number is 6
Frame, the 92nd data frame that frame number is 9 are mistake, and other data frames are correct.Second of the reception grouped data of receiving terminal 2
Signal, when frame number in receiving the packet data signals is 1 12 data frame, judge the frame number of the 12nd data frame with
The frame number of 1st data frame of error is identical, then receives the 12nd data frame；When the 22nd number of 2 receiving frame serial number 2 of receiving terminal
When according to frame, the frame number and the 1st data frame of error, the 3rd data frame, the 6th data frame, the 9th data of the 22nd data frame are judged
The frame number of frame is all different, then receiving terminal 2 is abandoned receiving the 22nd data frame；The receiving frame serial number 3 successively again of receiving terminal 2
32nd data frame, the 62nd data frame that frame number is 6, the 92nd data frame that frame number is 9, other data frames are abandoned connecing
It receives.Receiving terminal 2 is after having received the 12nd data frame, the 32nd data frame, the 62nd data frame, the 92nd data frame, by executing CRC
Whether checking routine is correct to judge the 12nd data frame, the 32nd data frame, the 62nd data frame, the 92nd data frame, judges the 62nd
After data frame and the 92nd data frame are all mistake, just abandon the 62nd data frame and the 92nd data frame being respectively stored in corresponding
6th memory space and the 9th memory space, and judge that the 12nd data frame and the 32nd data frame are correct, just by the 12nd data frame
It is respectively stored in corresponding 1st memory space and the 3rd memory space with the 32nd data frame.
Table 6
Receiving terminal 2 judges to receive packet data signals 2 times, the packet data signals number sent less than transmitting terminal 15 times,
Receiving terminal 2 then receives packet data signals the 3rd time.
The data frame that receiving terminal 2 receives in packet data signals for the third time is as shown in table 7, and receiving terminal 2 receives for the third time to be divided
When group data-signal, the data frame and frame number of receiving frame serial number 6 are 9 data frame, are then abandoned to other data frames
It receives.After receiving terminal 2 has received the 63rd data frame that frame number is 6 and the 93rd data frame that frame number is 9, pass through execution
CRC check program judges the 63rd data frame and 93 data frame correctness, judges after the 63rd data frame is correct just by the 63rd data
Frame is stored in the 6th memory space corresponding with frame number 6, then abandons depositing the 9th data frame after judging the 93rd data frame error
Store up corresponding 9th memory space for being 9 in frame number.
Receiving terminal 2 judges to receive packet data signals 3 times, the packet data signals number sent less than transmitting terminal 15 times,
Then the 4th receives packet data signals to receiving terminal 2.
Table 7
The 4th data frame received in packet data signals of receiving terminal 2 is as shown in table 8, the 4th reception point of receiving terminal 2
When group data-signal, the 94th data frame error that the frame numbers of packet data signals is 9, receiving terminal 2 abandons the 94th data of storage
Frame.
Table 8
Receiving terminal 2 judges to receive packet data signals 4 times, the packet data signals number sent less than transmitting terminal 15 times,
Then the 5th receives packet data signals to receiving terminal 2.
The 5th data frame received in packet data signals of receiving terminal 2 is as shown in table 9, the 5th reception point of receiving terminal 2
When group data-signal, the 95th data frame error that the frame numbers of packet data signals is 9, receiving terminal 2 abandons the 95th data of storage
Frame.
Table 9
As shown in table 10, receiving terminal 2 corrects the data frame of mistake after receiving the 5th packet data signals
Schematic diagram afterwards, the data frame that frame number is 9 are mistake.
Table 10
Receiving terminal 2 judges to receive packet data signals 5 times, is equal to the packet data signals number 5 times that transmitting terminal 1 is sent,
And the 9th data frame all malfunctions in the packet data signals of 5 receptions, then receiving terminal 2 judges the 9th in this 5 groups of packet data signals
The bit data correctness of data frame.
The bit data for the 9th data frame that frame number is 9 in 1st group of packet data signals is as shown in table 11, the 2nd group of grouping
The bit data for the 92nd data frame that frame number is 9 in data-signal is as shown in table 12, frame number in the 3rd group of packet data signals
Bit data for 9 the 93rd data frame is as shown in table 13, the 94th data frame that frame number is 9 in the 4th group of packet data signals
Bit data it is as shown in table 14, in the 5th group of packet data signals frame number be 9 the 95th data frame bit data such as table 15
It is shown, count the ratio that each sequentially corresponding bit data is 0 or 1 in this 5 groups of bit datas.
Table 11
Table 12
Table 13
Table 14
Table 15
The ratio that 1st bit data is 0 is 1, and the ratio that the 2nd bit data is 0 is 0.6, the ratio that the 3rd bit data is 1
Example is that the ratio that the 0.8, the 4th bit data is 0 is 0.8, and the ratio that the 5th bit data is 1 is 0.8, and the 6th bit data is 0
Ratio is that the ratio that the 0.8, the 7th bit data is 1 is 1, and the ratio that the 8th bit data is 0 is 1, the ratio that the 9th bit data is 1
Example is that the ratio that the 1, the 10th bit data is 1 is 1, and the ratio that the 11st bit data is 0 is 1, the ratio that the 12nd bit data is 1
Be the ratio that the 1, the 13rd bit data is 1 it is 1, the ratio that the 14th bit data is 0 is 1, and the ratio that the 15th bit data is 1 is
The ratio that 1, the 16th bit data is 0 is 1.It may determine that, the 1st bit data is that the 0, the 2nd bit data is the 0, the 3rd bit data
Be the 1, the 4th bit data be the 0, the 5th bit data be the 1, the 6th bit data be the 0, the 7th bit data it is that the 1, the 8th bit data is
It is the 1, the 11st bit data be the 0, the 12nd bit data is the 1, the 13rd bit data that 0, the 9th bit data, which is the 1, the 10th bit data,
Be the 1, the 14th bit data be the 0, the 15th bit data be the 1, the 16th bit data it is 0.By correct bit data storage to the 9th
Corresponding storage unit in memory space.The bit data of the 9th data frame after being corrected is as shown in table 16.
Table 16
Further, the data frame after above-mentioned storage is subjected to CRC check, stored data is judged after CRC check
Frame is correct, and the prompt of receiving terminal 2 receives successfully, and stops receiving the packet data signals that transmitting terminal 1 is sent；If through CRC
Judge stored data frame error after verification, receiving terminal 2 just continue in the packet data signals of the transmission of transmitting terminal 1 with
The corresponding data frame of frame number of error data frame.
In conclusion receiving terminal 2 first time receive transmitting terminal 1 send packet data signals, record packet count it is believed that
The frame number of error data frame in number, when receiving the packet data signals that transmitting terminal 1 is sent next time, selection receives and the
The corresponding data frame of frame number of error data frame in packet data signals is convenient for reducing spatial cache in this way, judges weight
Whether the data frame newly received is correct, which is stored in the memory space of receiving terminal 2 if correct, just fully sharp in this way
The packet data signals received for the first time with receiving terminal 2 do not need all data frames in the packet data signals of single reception
All correct just receive successfully improves the success rate that grouped data group is exhaled.As shown in Figure 4 and as shown in figure 5, wherein method one is
Receiving terminal 2 is by the packet data signals independent process of reception, only when data all in the packet data signals that single receives
Frame is all correct, just assert and receives successfully, two method using the present invention of method handles packet data signals, is sent out in transmitting terminal 1
When the bit error rate of packet data signals or all identical signal-to-noise ratio in receiving terminal 2, the success rate of method two is higher than method one
Success rate..
It should be understood that above example only expresses the preferred embodiment of the present invention, description is more specific and detailed
Carefully, but it cannot be construed as a limitation to the scope of the present invention；It should be pointed out that for the common skill of this field
For art personnel, without departing from the inventive concept of the premise, above-mentioned technical characterstic can be freely combined, can also be done
Go out several modifications and improvements, these are all within the scope of protection of the present invention；Therefore, all to be done with scope of the invention as claimed
Equivalents and modification, should all belong to the covering scope of the claims in the present invention.
Claims (9)
1. a kind of transmission method that grouped data group is exhaled, which is characterized in that include the following steps：
A：Receiving terminal receives the packet data signals from transmitting terminal；
B：The receiving terminal judges data frame correctness in packet data signals, if wrong data frame in packet data signals,
Then receiving terminal misregistration data frame, and step C is executed, if the data frame of packet data signals is correct, then follow the steps E；
C：The receiving terminal receives data frame identical with the frame number of the error data frame in packet data signals again；
D：The receiving terminal judges the data frame correctness received again, if the data frame received again correctly thens follow the steps E,
If the data frame error received again, when the receiving terminal receives the number of packet data signals less than pre-determined number n, hold
The row step C, when the receiving terminal receives packet data signals number and reaches the scheduled frequency n, to wrong data
Frame carries out error correcting processing, then executes step E；
E：Correct data frame is preserved, is finished receiving.
2. the transmission method that grouped data group according to claim 1 is exhaled, which is characterized in that the receiving terminal is to error number
Carrying out error correcting processing according to frame includes：
The bit data of the receiving terminal misregistration data frame；
Judge the parity of pre-determined number n, if pre-determined number n is odd number, counts the identical all error data frames of frame number
In same sequential bits bit data be 0 or 1 ratio, if pre-determined number n is even number and n ＞ 3, the identical n-1 of statistics frame number
The ratio that same sequential bits bit data is 0 or 1 in a error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, judge that the same sequential bits bit data is 0,
Otherwise it is determined as 1.
3. the transmission method that grouped data group according to claim 1 is exhaled, which is characterized in that in the step B and D, institute
State the correctness that receiving terminal judges data frame by executing CRC check program.
4. a kind of transmitting device that grouped data group is exhaled, including receiving terminal, which is characterized in that the receiving terminal includes
Receiving module, for receiving packet data signals and exporting；
Control module is connect with the receiving module, the data frame in packet data signals for judging receiving module reception
Correctness, and correct data frame is exported, and record error data frame in the packet data signals received, and next time
Data frame identical with the frame number of error data frame is only received when receiving packet data signals, until the data received next time
Frame is completely correct, is additionally operable to judge that whether the receiving module receives the number of packet data signals less than scheduled frequency n, if
It is no, then it controls the receiving module and stops receiving packet data signals, error correcting processing is carried out to error data frame；
Storage module is connect with the control module, for storing correct data frame.
5. the transmitting device that grouped data group according to claim 4 is exhaled, which is characterized in that the control module is additionally operable to
It is receiving after packet data signals number reaches n times, if also error data frame, when n is odd number, then it is identical to count frame number
All error data frames in same sequential bits bit data be 0 or 1 ratio, when n be even number and n ＞ 3, then count frame number
The ratio that same sequential bits bit data is 0 or 1 in identical n-1 error data frame, if the same sequential bits bit number
It is more than 0.5 according to for 0 ratio, then judges that the same sequential bits bit data is 0, otherwise be determined as 1.
6. a kind of transmitting device that grouped data group is exhaled, including receiving terminal, which is characterized in that the receiving terminal includes storage mould
Block, receiving port, CPU,
The receiving port is connect with the CPU, for receiving packet data signals and exporting to the CPU；
The CPU, for executing following step：
A, packet data signals are received；
B, judge data frame correctness in packet data signals, if wrong data frame in packet data signals, receiving terminal note
The error data frame is recorded, and executes step c, if the data frame of packet data signals is correct, thens follow the steps e；
C, data frame identical with the frame number of error data frame in packet data signals is received again；
D, the data frame correctness received again is judged, if the data frame received again correctly thens follow the steps e, if receiving again
Data frame error, then receiving terminal receive packet data signals number be less than pre-determined number n when, execute the step c,
After the number of the receiving port reception packet data signals reaches n times, if also vicious data frame, to error data frame
Step e is returned after carrying out error correcting processing；
E, correct data frame is exported；
The storage module is connect with the CPU, and the correct data frame for receiving the CPU outputs simultaneously preserves.
7. the transmitting device that grouped data group according to claim 6 is exhaled, which is characterized in that the CPU is to wrong data
Frame carries out error correcting processing,
Judge the parity of scheduled frequency n, if scheduled frequency n is odd number, the identical all wrong data of statistics frame number
The ratio that same sequential bits bit data is 0 or 1 in frame, if scheduled frequency n is even number and n ＞ 3, statistics frame number is identical
The ratio that same sequential bits bit data is 0 or 1 in n-1 error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, judge that the same sequential bits bit data is 0,
Otherwise it is determined as 1.
8. a kind of Transmission system that grouped data group is exhaled, which is characterized in that including transmitting terminal and receiving terminal：
The transmitting terminal, for sending packet data signals, the number for sending packet data signals is scheduled frequency n, n>1；
The receiving terminal includes storage module, receiving port, CPU,
The receiving port is connect with the CPU, for receiving packet data signals and exporting to the CPU；
The CPU, for executing following step：
A. the packet data signals from the transmitting terminal are received；
B. judge data frame correctness in packet data signals,
If wrong data frame in packet data signals, misregistration data frame, and step c is executed,
If the data frame of the packet data signals is correct, e is thened follow the steps；
c：Data frame identical with the frame number of error data frame in packet data signals is received again；
d：The data frame correctness received again is judged, if the data frame received again correctly thens follow the steps e, if receiving again
Data frame error, then the receiving terminal receive packet data signals number be less than pre-determined number n when, execute the step
C carries out error correcting processing, then hold when the receiving terminal receives packet data signals number and reaches n times to error data frame
Row step e；
e：Export correct data frame；
The storage module is connect with the CPU, and the correct data frame for receiving the CPU outputs simultaneously preserves.
9. the Transmission system that grouped data group according to claim 8 is exhaled, which is characterized in that
The receiving terminal executes when carrying out error correcting processing to error data frame：
Judge the parity of scheduled frequency n, if scheduled frequency n is odd number, the identical all wrong data of statistics frame number
The ratio that same sequential bits bit data is 0 or 1 in frame, if scheduled frequency n is even number and n ＞ 3, statistics frame number is identical
The ratio that same sequential bits bit data is 0 or 1 in n-1 error data frame；
If the ratio that the same sequential bits bit data is 0 is more than 0.5, judge that the same sequential bits bit data is 0,
Otherwise it is determined as 1.
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| CN201510249669.9A CN104869545B (en) | 2015-05-15 | 2015-05-15 | A kind of transmission method that grouped data group is exhaled, device and system |
| PCT/CN2016/081702 WO2016184333A1 (en) | 2015-05-15 | 2016-05-11 | Transmission method, device and system for group call of packet data |
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| CN201510249669.9A CN104869545B (en) | 2015-05-15 | 2015-05-15 | A kind of transmission method that grouped data group is exhaled, device and system |
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| CN104869545B (en) * | 2015-05-15 | 2018-08-31 | 哈尔滨海能达科技有限公司 | A kind of transmission method that grouped data group is exhaled, device and system |
| DE102016013654A1 (en) * | 2016-11-16 | 2018-05-17 | Diehl Metering Systems Gmbh | Method for transmitting information |
| CN112217600A (en) * | 2019-07-12 | 2021-01-12 | 天地融科技股份有限公司 | Data frame receiving method and device, and communication method and system |
| CN112217601A (en) * | 2019-07-12 | 2021-01-12 | 天地融科技股份有限公司 | Data frame communication method and system |
| CN112217599B (en) * | 2019-07-12 | 2021-12-24 | 天地融科技股份有限公司 | Data frame receiving method and device, and communication method and system |
| CN114220256B (en) * | 2020-09-03 | 2023-06-27 | 上海市环境科学研究院 | Gas sampling wireless control protocol |
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| US8418015B2 (en) * | 2007-06-08 | 2013-04-09 | China Academy Of Telecommunications Technology | Method, apparatus and system for coding and decoding of LDPC codes |
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| CN104869545B (en) * | 2015-05-15 | 2018-08-31 | 哈尔滨海能达科技有限公司 | A kind of transmission method that grouped data group is exhaled, device and system |
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| CN101621367A (en) * | 2009-06-09 | 2010-01-06 | 华中科技大学 | HARQ decoding method based on packet check information |
| CN101990242A (en) * | 2009-07-31 | 2011-03-23 | 夏普株式会社 | Adaptive retransmission method and user equipment in frequency spectrum polymerization system |
| CN103490866A (en) * | 2013-09-06 | 2014-01-01 | 北京航空航天大学 | Satellite-ground transmission network HARQ transmission method based on network coding |
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