CN200959608Y - Encode multiplexing and decoding demultiplexer for service channel - Google Patents
Encode multiplexing and decoding demultiplexer for service channel Download PDFInfo
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- CN200959608Y CN200959608Y CNU2006201180695U CN200620118069U CN200959608Y CN 200959608 Y CN200959608 Y CN 200959608Y CN U2006201180695 U CNU2006201180695 U CN U2006201180695U CN 200620118069 U CN200620118069 U CN 200620118069U CN 200959608 Y CN200959608 Y CN 200959608Y
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Abstract
The utility model discloses a coding multiplexing and decoding demultiplexing device of traffic channel, the coding multiplexing device of the traffic channel comprises: an error correcting encoder, an adaptive repeater, a puncher, a repeater, a sectionalizer, an interleaver and a physical channel mapper; the decoding demultiplexing device of the traffic channel includes: a physical channel de-mapper, a de-interleaver, a section combiner, an error correcting decoder, an adaptive repeating decider. By using the device provided by the utility model, the error block rate performance of the packet data is improved, thus the throughput in the link is enhanced.
Description
Technical field
The utility model relates to a kind of device of Traffic Channel, relates in particular to a kind of code multiplexing and decoding Deplexing apparatus of Traffic Channel, is used for mobile communication system.
Background technology
In mobile communication process, must carry out error correction coding to the data business and could in the mobile communication environment of complexity, obtain the acceptable performance, and common employed circuit-switched technology mainly is applicable to the business relevant with speech that transmit, this network exchange mode has significant limitation for data service.At first data communication has very strong sudden, Peak bit rate and mean bit rate differ bigger, if employing circuit-switched technology, if then can cause the significant wastage of resource by Peak bit rate distributor circuit bandwidth, if distribute bandwidth according to mean bit rate, then can cause losing in a large number of data.Next be with speech business by comparison, voice signal can have to a certain degree distortion and the real-time must be high, and data service does not have strict requirement to time delay, but need carry out the transmission of zero defect.Therefore need a kind of technical method solve the problems referred to above, and packet-switch technology is exactly a kind of exchanged form that proposes at the characteristics of data communication service.
Summary of the invention
Technical problem to be solved in the utility model just provides a kind of code multiplexing and decoding Deplexing apparatus of Traffic Channel, retransmission technique obtains enough link gains by adopting fast, the data set phase method also can make organizing of data more flexible simultaneously, to avoid influencing because of curing data length the efficiency of transmission of mobile communication.
In order to solve the problems of the technologies described above, the utility model provides a kind of code multiplexing and decoding Deplexing apparatus of Traffic Channel, wherein, a kind of code multiplexing device of Traffic Channel comprises: error correcting encoder, the self adaptation repeater, card punch and duplicator, sectionalizer, interleaver, physical channel mapper, wherein, described error correcting encoder carries out error correction coding to business datum, store forwarding via the business datum of self adaptation repeater after to error correction coding, and according to the feedback information of receiving terminal whether decision retransmits, according to physical frame data carried by data amount the data after handling through the self adaptation repeater are carried out rate-matched by card punch or duplicator again, by sectionalizer it is carried out fixed segments through the data after card punch or the duplicator processing, the data that are fixed after the segmentation are carried out interleaving treatment by interleaver again, and last data map after will being interweaved by physical channel mapper is in the physical channel frame.
Wherein, described error correcting encoder, comprise: cyclic check device, code block segmentation device, encoder, wherein, described cyclic check device is to the additional cyclic redundancy check (CRC) position of business datum, carry out segmentation by the data of code block segmentation device after then to additional check digit, again by encoder to segmentation after the data of gained encode.
Wherein, described self adaptation repeater further comprises, needs the instruction of retransmitting when receiving terminal returns, and then the self adaptation repeater continues to retransmit, and then stops to retransmit when the self adaptation repeater acknowledges receipt of the instruction that need not to retransmit, and removes memory space in the repeater.Wherein, comprise further that the mode that the self adaptation repeater adopts part to retransmit or all retransmit is carried out the repeating transmission of data.
Wherein, described card punch and duplicator further comprise, when data volume surpasses the physical frame carrying upper limit, are punched to compress by card punch and handle, and when data volume is carried the upper limit less than physical frame, carry out repeated and redundant by duplicator and handle.
Wherein, a kind of decoding Deplexing apparatus of Traffic Channel, comprise: the physical channel de-mapping device, deinterleaver, the segmentation combiner, error correcting deocder, self adaptation is retransmitted decision device, wherein, described physical channel de-mapping device extracts physical channel data from physical channel, then by deinterleaver the described data that extract being carried out deinterleaving handles, obtain each segment data, by the segmentation combiner each segment data is made up then, by error correcting deocder the data that obtain after making up are carried out error-correcting decoding again, whether obtain correct raw information according to error correcting deocder at last and judge whether needs send the repeating transmission instruction.
Wherein, described error correcting deocder, comprise: card punch, zero padding device, self adaptation are retransmitted combiner, decoder, wherein, the redundant data that described card punch produces the duplicator in the code multiplexing device is deleted or described zero padding device carries out zero padding to the cavity position that the card punch in the code multiplexing device causes, retransmit the data result that repeatedly retransmits that obtains after combiner is handled punching or zero padding by self adaptation again and carry out soft merging, the data after the merging are deciphered it by decoder.
Wherein, described self adaptation repeating transmission combiner merges processing to the data of whole repeating transmission or part repeating transmission.
Wherein, described self adaptation is retransmitted decision device and is further comprised, when decoding error, retransmits decision device by self adaptation and sends the re-send request may instruction, when decoding is correct, retransmits decision device by self adaptation and sends the instruction that acknowledges receipt of and need not to retransmit.
Device described in the utility model by Error-correcting Encoding and Decoding, data re-transmission and punching or repeat techniques, has promoted the Block Error Rate performance of block domain data, thereby has improved the throughput of link.
Description of drawings
Fig. 1 is the connection diagram according to the code multiplexing device of the described a kind of Traffic Channel of the utility model embodiment;
Fig. 2 is the connection diagram according to the decoding Deplexing apparatus of the described a kind of Traffic Channel of the utility model embodiment;
Fig. 3 is the internal structure schematic diagram according to error correcting encoder in the code multiplexing device of the described a kind of Traffic Channel of the utility model embodiment;
Fig. 4 is the internal structure schematic diagram according to error correcting deocder in the decoding Deplexing apparatus of the described a kind of Traffic Channel of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to figure 1, the connection diagram for the code multiplexing device of the described a kind of Traffic Channel of the utility model embodiment specifically comprises: error correcting encoder, self adaptation repeater, card punch, duplicator, sectionalizer, interleaver and physical channel mapper.
Error correcting encoder is used for business datum is carried out error correction coding;
Whether the self adaptation repeater is used for the business datum after the error correction coding is stored forwarding, and retransmit according to the feedback information decision of receiving terminal;
Card punch and duplicator are used for carrying out rate-matched through the data based physical frame data carried by data amount of self adaptation repeater;
Sectionalizer is used for carrying out fixed segments through the data after card punch or the duplicator processing;
Interleaver is used for the data after the fixed segments are carried out interleaving treatment;
Physical channel mapper is used for the data map after interweaving in the physical channel frame.
Wherein, the error correction coding implement body comprises: cyclic check device, code block segmentation device and encoder, as shown in Figure 3:
The cyclic check device is to be used for business datum additional cycles redundancy check bit, and the figure place of cyclic check position is 24 in the utility model, also can be 16,12 or 8, and 24 generation formula as follows wherein:
g
CRC24(D)＝D
24+D
23+D
6+D
5+D+1。
The code block segmentation device is to be used for data are carried out segmentation, and to be fit to the use of coding module, because the utility model has adopted the Turbo coding, so section length is fixed as 5114.
Encoder, be to be used for the data after the segmentation are encoded, the utility model adopts the Turbo coded system, the error correction coding mode that also can adopt convolutional encoding or linear block codes etc. to be fit to, the generator polynomial of Turbo coding adopts the method for 8 systems, and its multinomial is:
g
0(D)＝1+D
2+D
3；g
1(D)＝1+D+D
3。
Wherein, interleaver can adopt block interleaving or circulation interweaving method, has adopted the method for block interleaving in the present embodiment, and the columns of block interleaving is 30 row, and line number is then according to the data flexible configuration of importing.
Business datum is at first carried out error correction coding by error correcting encoder, then via storage of self adaptation repeater and forwarding, if receiving terminal returns the instruction that needs repeating transmission, then the self adaptation repeater continues to retransmit, acknowledging receipt of the instruction that need not to retransmit up to the self adaptation repeater just stops to retransmit, and the memory space in the removing repeater, wherein, the mode that repeating transmission can adopt part to retransmit or all retransmit is carried out, selecting card punch or duplicator that it is carried out rate-matched respectively through the data based data volume size of self adaptation repeater handles, if data volume surpasses the physical frame carrying upper limit, then punched to compress and handled by card punch, if data volume is carried the upper limit less than physical frame, then carrying out repeated and redundant by duplicator handles, by sectionalizer the data of card punch or duplicator are carried out fixed segments again, send interleaver to carry out interleaving treatment then, the data after having interweaved are mapped in the physical channel frame via physical channel mapper.
With reference to figure 2, the connection diagram for the decoding Deplexing apparatus of the described a kind of Traffic Channel of the utility model embodiment specifically comprises: physical channel de-mapping device, deinterleaver, segmentation combiner, error correcting deocder, self adaptation are retransmitted decision device.
The physical channel de-mapping device is used for physical channel data is extracted from physical channel;
Deinterleaver is used for that the described data that extract are carried out deinterleaving and handles, and obtains each segment data;
The segmentation combiner is used for each segment data is made up;
Error correcting deocder is used for the data that obtain after the combination are carried out error-correcting decoding;
Self adaptation is retransmitted decision device, is used for whether obtaining correct raw information according to error correcting deocder and judges whether needs send the repeating transmission instruction.
Wherein, the error-correcting decoding implement body comprises: card punch, zero padding device, self adaptation are retransmitted combiner and decoder, as shown in Figure 4:
Card punch is corresponding with the position of duplicator in the code multiplexing device, can directly take the mode with information deletion on the correspondence position, and the redundancy that also can utilize duplicator to produce improves processing gain, as the mode that simply duplicate message is merged.
The zero padding device is corresponding with the position of card punch in the code multiplexing device, and the cavity position that this card punch is caused carries out zero padding.
It is repeatedly to retransmit the device that the result carries out soft merging that self adaptation is retransmitted combiner, and combiner can be handled simple merging of all retransmitting results, the merging of also can the processing section retransmitting the result.
Decoder is the device corresponding with encoder, and what adopt in the utility model is the Turbo decoder.
The physical channel de-mapping device at first extracts physical channel data from physical channel, then the described data that extract being carried out deinterleaving via deinterleaver handles, obtain each segment data, deliver to the segmentation combiner then with each segmentation combination, send error correcting deocder to decipher again, if decoding error is then retransmitted decision device by self adaptation and sent re-send request may, if decoding is correct, then retransmits decision device and send the instruction that acknowledges receipt of and need not to retransmit by self adaptation.
By above code multiplexing device and decoding Deplexing apparatus, Error-correcting Encoding and Decoding has solved mobile data services and obtained the acceptable performance in the mobile communication environment of complexity, adopting fast, retransmission technique can be used for obtaining enough link gains, the method of data set section also can make organizing of data more flexible flexibly simultaneously, avoids the immobilization data length to influence the mobile communication efficiency of transmission.
Claims (4)
1. the code multiplexing device of a Traffic Channel, it is characterized in that, comprise: error correcting encoder, the self adaptation repeater, card punch and duplicator, sectionalizer, interleaver, physical channel mapper, wherein, described error correcting encoder carries out error correction coding to business datum, store forwarding via the business datum of self adaptation repeater after to error correction coding, and according to the feedback information of receiving terminal whether decision retransmits, according to physical frame data carried by data amount the data after handling through the self adaptation repeater are carried out rate-matched by card punch or duplicator again, by sectionalizer it is carried out fixed segments through the data after card punch or the duplicator processing, the data that are fixed after the segmentation are carried out interleaving treatment by interleaver again, and last data map after will being interweaved by physical channel mapper is in the physical channel frame.
2. device as claimed in claim 1, it is characterized in that, described error correcting encoder, comprise: cyclic check device, code block segmentation device, encoder, wherein, described cyclic check device is to the additional cyclic redundancy check (CRC) position of business datum, carries out segmentation by the data of code block segmentation device after to additional check digit then, again by encoder to segmentation after the data of gained encode.
3. the decoding Deplexing apparatus of a Traffic Channel, it is characterized in that, comprise: the physical channel de-mapping device, deinterleaver, the segmentation combiner, error correcting deocder, self adaptation is retransmitted decision device, wherein, described physical channel de-mapping device extracts physical channel data from physical channel, then by deinterleaver the described data that extract being carried out deinterleaving handles, obtain each segment data, by the segmentation combiner each segment data is made up then, by error correcting deocder the data that obtain after making up are carried out error-correcting decoding again, whether obtain correct raw information according to error correcting deocder at last and judge whether needs send the repeating transmission instruction.
4. device as claimed in claim 3, it is characterized in that, described error correcting deocder, comprise: card punch, zero padding device, self adaptation are retransmitted combiner, decoder, wherein, the redundant data that described card punch produces the duplicator in the code multiplexing device is deleted or described zero padding device carries out zero padding to the cavity position that the card punch in the code multiplexing device causes, retransmit the data result of repeatedly retransmitting that obtains after combiner is handled punching or zero padding by self adaptation again and carry out soft merging, the data after the merging are deciphered it by decoder.
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|---|---|---|---|
| CNU2006201180695U CN200959608Y (en) | 2006-06-08 | 2006-06-08 | Encode multiplexing and decoding demultiplexer for service channel |
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| CNU2006201180695U CN200959608Y (en) | 2006-06-08 | 2006-06-08 | Encode multiplexing and decoding demultiplexer for service channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499885B (en) * | 2008-02-03 | 2013-02-27 | 中兴通讯股份有限公司 | Uplink/downlink retransmission method and system based on wireless communication time division duplex system |
| CN108134654A (en) * | 2017-12-25 | 2018-06-08 | 四川九洲空管科技有限责任公司 | A kind of method and device for improving ultra-long data report transmission reliability |
-
2006
- 2006-06-08 CN CNU2006201180695U patent/CN200959608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499885B (en) * | 2008-02-03 | 2013-02-27 | 中兴通讯股份有限公司 | Uplink/downlink retransmission method and system based on wireless communication time division duplex system |
| CN108134654A (en) * | 2017-12-25 | 2018-06-08 | 四川九洲空管科技有限责任公司 | A kind of method and device for improving ultra-long data report transmission reliability |
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Granted publication date: 20071010 Termination date: 20140608 |