CN103199952A - Service data transmission method in communication receiver and service data transmission module - Google Patents
Service data transmission method in communication receiver and service data transmission module Download PDFInfo
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- CN103199952A CN103199952A CN2012100040866A CN201210004086A CN103199952A CN 103199952 A CN103199952 A CN 103199952A CN 2012100040866 A CN2012100040866 A CN 2012100040866A CN 201210004086 A CN201210004086 A CN 201210004086A CN 103199952 A CN103199952 A CN 103199952A
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Abstract
The invention discloses a service data transmission method in a communication receiver. After byte de-interleaving of received data is completed, the data are placed in a de-interleaving buffer pool, and an interrupt signal is sent to an external application processor; the external application processor judges the interrupt service number, if the interrupt service number is an interrupt service number needing transmission, the length of current service data is read in the receiver, and then data reading commands are sent; a preset packet length counting device is used, the data in the de-interleaving buffer pool are read in a segmentation mode according to a fixed data packet form and are sent to the external application processor; and a service data length counting device is used, the total reading length of the service data is controlled, and when the counting value of the service data length counting device reaches the total length of a current service data mode, current service data transmission is completed. The invention further discloses a service data transmission module applied to the method. The service data transmission method and the service data transmission module can transmit the service data and control commands at the same SPI protocol interface at the same time.
Description
Technical field
The present invention relates to the digital information transmission field, particularly relate to the service data transmission method in a kind of communication control processor.The invention still further relates to a kind of business data transmission module for described method.
Background technology
CMMB (China Mobile Multimedia Broadcasting, the China Mobile multimedia broadcasting TV) be the China Mobile multimedia broadcasting industry standard that China national General Bureau of Radio, Film and Television promulgated in October, 2006, this standard was in formal enforcement on November 1 in 2006.It is a kind of wireless broadcast system based on multi-carrier OFDM (OFDM) technology, adopts advanced channel error correction coding and multi-carrier OFDM modulation technique, has improved antijamming capability and to ambulant support; Adopt the time slot radiation pattern to reduce the power consumption of terminal.According to the imagination of the CMMB network coverage, the CMMB signal realizes that by S-band satellite overlay network and U wave band ground overlay network signal covers.S-band satellite overlay network broadcast channel is used for directly receiving, and the Ku wave band is up, and S-band is descending.Distribution channels is used for ground supplement and transmits reception, and the Ku wave band is up, and the Ku wave band is descending, transfers S-band to by ground supplement forwarded device and sends to the CMMB terminal.For realizing effective covering of crowded city mobile multimedia broadcast television signal, adopt the emission of U wave band terrestrial wireless to make up U wave band ground, city overlay network.
In the CMMB receiver, give the applications processor with the business data transmission that receives, need to receive and feed back the order that the applications processor sends simultaneously.Because receiver has only a SPI (high-speed synchronous serial line interface) protocol interface, be a problem simultaneously so how to guarantee these two application.
Summary of the invention
The technical problem to be solved in the present invention provides the service data transmission method in a kind of communication control processor, can be in a SPI protocol interface while service data transmission and control command; For this reason, the present invention also will provide a kind of business data transmission module for described method.
For solving the problems of the technologies described above, the service data transmission method in the communication control processor of the present invention comprises the steps:
Step 1 after the reception data are finished the byte deinterleaving, is placed on data in the deinterleaved data Buffer Pool, and sends interrupt signal to the applications processor; The data that leave in the described deinterleaved data Buffer Pool are business datum;
Step 2, described applications processor is judged interrupting service number according to interrupt signal, if need the interruptions in transmissions service numbers, then reads the length of current business data in the receiver, sends the read data order then, reads business datum;
Step 3, in receiver, use predefined packet length counter, and control this packet length counter by the counter controls state machine and count, read the data in the described deinterleaved data Buffer Pool and send to the applications processor with the segmentation of fixed data packet format;
Step 4, in receiver, use the business datum length counter, and control this business datum length counter by described counter controls state machine and count, and then the total length of business datum is read in control, when the count value of described business datum length counter reached the total length of current business data pattern, then the current business transfer of data was finished.
The signal frame body of described reception data is used multi-carrier modulation.
Described signal frame body is the frame symbol that meets China Mobile multimedia broadcasting TV CMMB standard.
Be used for the described business data transmission control module of said method, comprise counter controls state machine, packet length counter and business datum length counter;
When the applications processor began to read business datum from receiver, described counter controls state machine entered the counting attitude, triggered described packet length counter and business datum length counter and began counting; And trigger the deinterleaved data Buffer Pool read enable, produce address signal, from this deinterleaved data Buffer Pool, read business datum;
Described receiver is every to byte business datum of described applications processor transmission by the fixed packet form by high-speed synchronous serial line interface SPI, and described packet length counter and business datum length counter add " 1 " respectively; When the business datum of transmission reaches predefined data packet length, the business data transmission of first packet finishes, described counter controls state machine enters the maintenance attitude, and with described packet length counter O reset, the business datum length counter keeps currency; Sent by described applications processor then and read the business datum order, continue to read business datum; Described counter controls state machine enters the counting attitude again, trigger described packet length counter and business datum length counter and continue counting, after finishing the complete business data transmission of next packet, described counter controls state machine enters the maintenance attitude again, and with described packet length counter O reset, the business datum length counter keeps currency, so repeats;
When transmitting the business datum of last packet, described counter controls state machine control packet length counter and business datum length counter continue counting, when described business datum length counter reaches the transmission total length of current business data pattern, then stop business datum length counter and packet length rolling counters forward, thus stop the deinterleaved data Buffer Pool read to enable generation with address signal; Remove interrupt signal simultaneously, described counter controls state machine enters idle condition, and this business data transmission is finished.
The present invention is based on the address control unit of double counters, proposed service data transmission method and business data transmission control module in a kind of communication control processor; By the generation of reading the address and reading enable signal of two counter controls deinterleaved data Buffer Pools, the data packet format of realization business datum reads with total length to be controlled.Data directly read from the deinterleaved data Buffer Pool, need not increase other memory as the Buffer Pool of data packet format read data after deinterleaving.Be implemented in a SPI protocol interface service data transmission and control command simultaneously, and reduced the use of memory, reduced chip area.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the CMMB receiver principle block diagram with business data transmission control module.
Fig. 2 is the business data transmission control module structured flowchart among Fig. 1.
Embodiment
The present invention is based on the address control unit of double counters, realizes the business data transmission in the communication control processor, in order to solve the problem in a SPI protocol interface while service data transmission and control command.After receiver is finished the byte deinterleaving, data are placed in the deinterleaved data Buffer Pool.When service data transmission, in receiver, use predefined packet length counter, read the business datum in the deinterleaved data Buffer Pool and send to the applications processor with fixed data packet format segmentation (every section business data are a packet).Use the business datum length counter in receiver simultaneously, the total length of business datum is read in control, finishes the back of reading of current business data and removes interrupt signal, and the counter controls state machine recovers wait state, and this business data transmission is finished.
Length of data package is set according to the disposal ability of applications processor, and the business data transmission process in the packet can not be interrupted, and can receive and feed back the order of described applications processor between each packet.
Fig. 1 is CMMB receiver one an embodiment theory diagram that possesses business data transmission control function.The radio frequency analog signal that receives at first enters time domain demodulation module 100, and the time domain data of exporting after the time domain demodulation enters FFT (fast Fourier transform) module 200, and the data after demodulation that receive are transformed to frequency domain from time domain; Frequency domain data after the conversion enters frequency-domain demodulation module 300, finishes frequency-domain demodulation, and the frequency domain data after the demodulation carries out the byte deinterleaving by byte de-interleaving block 400, after finishing the byte deinterleaving and handling with deposit data in deinterleaved data Buffer Pool 500.Professional transmission control module 600, its position is in the end of CMMB receiver, be used for controlling the address of this deinterleaved data Buffer Pool 500 and reading to enable, thereby the control data is to the transmission of outside application processor.
The present invention will be described as embodiment to receive one road 54K traffic segment below.The preliminary setting data packet format is 8K.Corresponding business model is: the 1/2LDPC code check, and (192,240) RS code check, the byte-interleaved mode 3, business accounts for 4 time slots.
In conjunction with shown in Figure 2, in business data transmission control module 600, comprise counter controls state machine 610, packet length counter 620 and business datum length counter 630.
Receiver is placed on data in the deinterleaved data Buffer Pool 500, and sends interrupt signal Int to the applications processor after the reception data being finished the deinterleaving of solution mediation byte.
After the applications processor obtains interrupt signal Int, send reading order by SPI to receiver, read current interrupting service number, if need the interruptions in transmissions service numbers, then continue from receiver, to read current business data length counter, send then and read the business datum order, begin from receiver, to read business datum.
Business data transmission control module 600 is started working, counter controls state machine 610 enters the counting attitude, trigger packet length counter 620 and business datum length counter 630 and begin counting, and trigger the deinterleaved data Buffer Pool read enable, produce address signal, from this deinterleaved data Buffer Pool, read business datum;
Described receiver is every to an outside application processor transmission 8bit (bit) byte by SPI, and two counters add " 1 " respectively; When the business datum of transmission reached predefined packet length 8K, the business data transmission of first packet finished, and counter controls state machine 610 enters the maintenance attitude, and with 620 zero clearings of packet length counter, business datum length counter 630 keeps currencys.Between data packet transmission, can carry out any command register (at time domain demodulation module 100, FFT module 200, frequency-domain demodulation module 300, byte de-interleaving block 400, all have the number order register to accept outer setting in the deinterleaved data Buffer Pool 500, be used for system mode control) read-write.Sent by the applications processor then and read the business datum order, continue to read business datum, described counter controls state machine 610 enters the counting attitude again, trigger packet length counter 620 and business datum length counter 630 continuation countings, finish once complete 8K business data transmission, counter controls state machine 610 enters the maintenance attitude again, repeats 620 zero clearings of packet length counter, and business datum length counter 630 keeps currency.
Read 6 bags of business datum with this data packet format rule, enter the 7th business datum then and read, because total transmission data are 54K, be different from preceding 6 secondary data bags transmission so counter controls state machine 610 enters the control of counting attitude for the 7th time.Counter controls state machine 610 control packet length counters 620 and business datum length counter 630 continue counting, when business datum length counter 630 reaches the transmission total length of current business data pattern, stop business datum length counter 630 and packet length counter 620 countings, thus stop deinterleaved data Buffer Pool 500 read to enable generation with address signal.Remove interrupt signal simultaneously, counter controls state machine 610 enters idle condition, and this business data transmission is finished.
Below through the specific embodiment and the embodiment the present invention is had been described in detail, but these are not to be construed as limiting the invention.Under the situation that does not break away from the principle of the invention, those skilled in the art also can make many distortion and improvement, and these also should be considered as protection scope of the present invention.
Claims (7)
1. the service data transmission method in the communication control processor is characterized in that, comprises the steps:
Step 1 after the reception data are finished the byte deinterleaving, is placed on data in the deinterleaved data Buffer Pool, and sends interrupt signal to the applications processor; The data that leave in the described deinterleaved data Buffer Pool are business datum;
Step 2, described applications processor is judged interrupting service number according to interrupt signal, if need the interruptions in transmissions service numbers, then reads the length of current business data in the receiver, sends the read data order then, reads business datum;
Step 3, in receiver, use predefined packet length counter, and control this packet length counter by the counter controls state machine and count, read the business datum in the described deinterleaved data Buffer Pool and send to the applications processor with the segmentation of fixed data packet format;
Step 4, in receiver, use the business datum length counter, and control this business datum length counter by the counter controls state machine and count, and then the total length of business datum is read in control, when the count value of described business datum length counter reached the total length of current business data pattern, then the current business transfer of data was finished.
2. method according to claim 1, it is characterized in that: during implementation step three, length of data package is set according to the disposal ability of applications processor, business data transmission process in the packet can not be interrupted, and can receive and feed back the order of described applications processor between each packet.
3. method according to claim 1 is characterized in that: the signal frame body use multi-carrier modulation of the described reception data of step 1.
4. method according to claim 3, it is characterized in that: described signal frame body is the frame symbol that meets China Mobile multimedia broadcasting TV CMMB standard.
5. method according to claim 1 is characterized in that: during implementation step four, after the current business transfer of data is finished described interrupt signal is removed described counter controls state machine recovery wait state, this business data transmission process end.
6. a business data transmission control module that is applied to the arbitrary described method of claim 1-5 is characterized in that: comprise counter controls state machine, packet length counter and business datum length counter;
When the applications processor began to read business datum from receiver, described counter controls state machine entered the counting attitude, triggered described packet length counter and business datum length counter and began counting; And trigger the deinterleaved data Buffer Pool read enable, produce address signal, from this deinterleaved data Buffer Pool, read business datum;
Described receiver is every to byte business datum of described applications processor transmission by the fixed packet form by high-speed synchronous serial line interface SPI, and described packet length counter and business datum length counter add " 1 " respectively; When the business datum of transmission reaches predefined data packet length, the business data transmission of first packet finishes, described counter controls state machine enters the maintenance attitude, and with described packet length counter O reset, the business datum length counter keeps currency; Sent by described applications processor then and read the business datum order, continue to read business datum; Described counter controls state machine enters the counting attitude again, trigger described packet length counter and business datum length counter and continue counting, after finishing the complete business data transmission of next packet, described counter controls state machine enters the maintenance attitude again, and with described packet length counter O reset, the business datum length counter keeps currency, so repeats;
When transmitting the business datum of last packet, described counter controls state machine control packet length counter and business datum length counter continue counting, when described business datum length counter reaches the transmission total length of current business data pattern, then stop business datum length counter and packet length rolling counters forward, thus stop the deinterleaved data Buffer Pool read to enable generation with address signal; Remove interrupt signal simultaneously, described counter controls state machine enters idle condition, and this business data transmission is finished.
7. business data transmission control module as claimed in claim 6 is characterized in that: between data packet transmission, can carry out any command register read-write.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108270706A (en) * | 2016-12-30 | 2018-07-10 | 河南辉煌科技股份有限公司 | A kind of motor synchronizing method of reseptance of BTM demodulated signals |
| CN109195142A (en) * | 2018-08-27 | 2019-01-11 | 惠州Tcl移动通信有限公司 | A kind of mobile terminal NFC data transmission detection method, mobile terminal and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108270706A (en) * | 2016-12-30 | 2018-07-10 | 河南辉煌科技股份有限公司 | A kind of motor synchronizing method of reseptance of BTM demodulated signals |
| CN108270706B (en) * | 2016-12-30 | 2021-08-17 | 河南辉煌科技股份有限公司 | Self-synchronization receiving method of BTM demodulation signal |
| CN109195142A (en) * | 2018-08-27 | 2019-01-11 | 惠州Tcl移动通信有限公司 | A kind of mobile terminal NFC data transmission detection method, mobile terminal and storage medium |
| CN109195142B (en) * | 2018-08-27 | 2021-07-13 | 惠州Tcl移动通信有限公司 | NFC data transmission detection method of mobile terminal, mobile terminal and storage medium |
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Application publication date: 20130710 |