CN104579565A - Data processing method and device for transmission system - Google Patents
Data processing method and device for transmission system Download PDFInfo
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- CN104579565A CN104579565A CN201410855357.8A CN201410855357A CN104579565A CN 104579565 A CN104579565 A CN 104579565A CN 201410855357 A CN201410855357 A CN 201410855357A CN 104579565 A CN104579565 A CN 104579565A
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
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Abstract
The invention discloses a data processing method and device for a transmission system. The method comprises the steps that reverse translation processing is carried out on received data frames translated in advance to generate raw data of the data frames; the raw data are grouped according to the bit width and the clock frequency of the transmission system to generate multiple groups of subdata; aligning is carried out on the multiple groups of the subdata to remove invalid data in the multiple groups of the subdata; the multiple groups of the subdata processed through aligning are combined and processed to generate valid raw data. As the frame data translated reversely are grouped, and aligning is carried out on each group of frame data, the invalid data in the restored frame data can be removed fast, the complexity of the algorithm and the complexity of a reverse translation circuit of the transmission system with the large bit width are reduced, the receiving speed of the frame data is increased, and the data frames can be received in a reversely-translated mode easily.
Description
Technical field
The present invention relates to field of data transmission, specifically, relate to a kind of data processing method and device of transmission system.
Background technology
Specify in PPP over SONET/SDH agreement, the sending order of transmitter side is: IP->PPP->FCS generation->Byte stuffing->Scrambling->SONET/ SDH framing, otherwise the order of receiver side is: SONET/SDH framing->Descrambling->Byte destuffing->FCSdetection->PP P->IP, wherein the execution of Byte stuffing and Byte destuffing is reversible, Bytestuffing is referred to as character and translates, Byte destuffing is referred to as character reverse and translates, below explain that lower character is translated and reverse the principle of translating with character:
In SONET/SDH transmission system, have a kind of special 0x7e character, its effect is adjacent two the PPP frames in interval, adds, resolve at receiving terminal at transmitter side; So just produce a problem, because after the IP message that user sends is packaged into PPP frame in other words, its frame internal data is random, also 0x7e character may be there is, if do not carry out any process, so the parsing of frame is that success will follow, so regulation will carry out padding bytes at transmitting terminal to the PPP frame after interpolation FCS in PPP overSONET/SDH agreement, carry out byte at receiving terminal to the data after descrambling to go to fill, concrete principle is as follows:
Transmitting terminal is when sending data to receiving terminal, if run into 0x7e character, original 0x7e character is then needed to become continuous two character transmission: 0x7d and 0x5e, to realize translating of the inner 0x7e character of PPP frame, but after 0x7e character is translated, there is again a problem, namely after 0x7e character is translated, there is 0x7d character, and the character that receiving terminal is this 0x7d character that cannot judge in Frame translated or original character, translate further so transmitting terminal needs to translate to 0x7e character the 0x7d character obtained when sending data to receiving terminal, transmit by becoming continuous print two character 0x7d and 0x5d during 0x7d, to realize translating of character 0x7d.
Illustrate that in prior art, receiving terminal translates process, i.e. data handling procedure for the character reverse of the PPP frame through character translation process received below for a specific example: suppose that the data division of the PPP frame that receiving terminal receives is:
| 7D | 5E | FE | 7D | 5D | 7D | 5D | 65 | 7D | 5E |
According to said method, all 7D needs to remove, and 7D byte below and 0x20 do xor computing, then obtain:
5E XOR 0x20 → 7E
5D XOR 0x20 → 7D
So the True Data (former data) of this partial data after reversing and translating reduction is as shown in data line below:
PPP frame data through translating:
| 7E | FE | 7D | 7D | 65 | 7E |
As can be seen from foregoing description, receiving terminal recover the former data of the Frame obtained, Frame can be made to become discontinuous, can exist in " cavity " between Frame inside or Frame, i.e. invalid data, corresponding, the data in non-" cavity " are then valid data, if so system bit wide is 128bit, i.e. 8bytes bit wide, so Frame is being carried out after reverse translates, then 4bytes may be only had in 8bytes data to be effective, therefore, the invalid data in the former data obtained after reverse being translated is needed to remove, but the packet that IP layer receives should be continuous print, invalid data can not be there is between Frame inside and Frame, data are only in this way sent to IP layer,
And in the prior art, for the process that the former data after reversing and translating carry out " cavity " is generally completed against translation circuit by character, concrete, the Frame of the process received being translated carries out inverse translation process, then all Frames after inverse translation process are carried out the removal in " cavity ", and for this character against translation circuit, in order to the reverse realizing Frame is translated and removed in " cavity ", when it is applied in the transmission system of low-bit width, such as clock frequency is the STM-16 system of 311.04Hz, clock frequency is in the STM-4 system of 77.76Mhz, then can realize inverse translation circuit by 8bit bit wide, implementing relatively easily, but when in STM-256 system, if use 8bit bit wide to realize inverse translation circuit, so the clock frequency of system needs to be operated in 4976.64Mhz, and this is that so high clock frequency is difficult to realize for current technique, therefore, and in order to solve this problem, then by reducing system frequency, the mode of increase system bit wide realizes the inverse translation circuit of system, but it is too complicated that so high bit wide can make cycle data content before and after Frame inside interweave, peel off also too complicated between frame and frame, thus make inverse translation circuit of the prior art implement very difficult and complicated in high-bit width transmission system, thus be unfavorable for that reception is translated in the reverse of Frame.
For the problems referred to above in correlation technique, at present effective solution is not yet proposed.
Summary of the invention
For the problem in correlation technique, the present invention proposes a kind of data processing method and device of transmission system, the quick removal of invalid data in the frame data after to reduction can be realized, lower the complexity of the complexity of algorithm and the inverse translation circuit of high-bit width transmission system, thus improve the receiving velocity of frame data, reception is translated in the reverse being beneficial to Frame.
Technical scheme of the present invention is achieved in that
According to an aspect of the present invention, a kind of data processing method of transmission system is provided.
This data processing method comprises:
By carrying out inverse translation process to the Frame in advance through translating received, generate the former data of Frame;
According to the bit wide of transmission system and clock frequency, former data are divided into groups, generate and organize subdata more;
By carrying out registration process respectively to many group subdatas, remove the invalid data in many group subdatas;
By carrying out merging treatment to the many groups subdata through registration process, generate effective former data.
Wherein, merging treatment is being carried out to the many groups subdata through registration process, can the many groups subdata through registration process merged; And by carrying out registration process to by the many groups subdata after merging, and remove the invalid data in the many groups subdata after merging, thus generate effective former data.
Wherein, the data length of many group subdatas is identical.
In addition, this data processing method comprises further:
By carrying out inverse translation process through the Frame of translating in advance to what receive, generate the label information of corresponding former data, wherein, label information is for marking valid data in former data and invalid data.
In addition, this data processing method comprises further:
After respectively registration process is carried out to many group subdatas, label information is upgraded.
In addition, this data processing method comprises further:
After many groups subdata after being combined carries out registration process, label information is upgraded.
According to a further aspect in the invention, a kind of data processing equipment of transmission system is provided.
This data processing equipment comprises:
Inverse translation module, for by carrying out inverse translation process to the Frame in advance through translating received, generates the former data of Frame;
Grouping module, for dividing into groups to former data according to the bit wide of transmission system and clock frequency, generating and organizing subdata more;
First alignment module, for by carrying out registration process respectively to many group subdatas, removes the invalid data in many group subdatas;
Merging module, for by carrying out merging treatment to the many groups subdata through registration process, generating effective former data.
Wherein, merge module to comprise: merge submodule, for merging the many groups subdata through registration process; Second alignment module, for by carrying out registration process to by the many groups subdata after merging, removing the invalid data in the many groups subdata after merging, thus generating effective former data.
Wherein, the data length of many group subdatas is identical.
In addition, this data processing equipment comprises further:
Generation module, for by carrying out inverse translation process through the Frame of translating in advance to what receive, generates the label information of corresponding former data, and wherein, label information is for marking valid data in former data and invalid data.
The present invention is by carrying out packet transaction by reversing the frame data after translating, and by carrying out registration process respectively to every Framed Data, thus achieve the quick removal of invalid data in the frame data after to reduction, reduce the complexity of the complexity of algorithm and the inverse translation circuit of high-bit width transmission system, and improve the receiving velocity of frame data, reception is translated in the reverse being beneficial to Frame.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the data processing method of transmission system according to the embodiment of the present invention;
Fig. 2 is the flow chart of the data processing method of communication system according to another embodiment of the present invention;
Fig. 3 is the block diagram of the data processing equipment of transmission system according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
According to embodiments of the invention, provide a kind of data processing method of transmission system.
As shown in Figure 1, comprise according to the data processing method of the embodiment of the present invention:
Step S101, by carrying out inverse translation process to the Frame in advance through translating received, generates the former data of Frame;
Step S103, divides into groups to former data according to the bit wide of transmission system and clock frequency, generates and organizes subdata more;
Step S105, by carrying out registration process respectively to many group subdatas, removes the invalid data in many group subdatas;
Step S107, by carrying out merging treatment to the many groups subdata through registration process, generates effective former data.
Invalid data in the former data of the Frame after translating to make reverse is removed, a kind of processing method of data is achieved in the present embodiment based on the STM-256 transmission system of high-bit width, concrete, be made up of 6 level production lines, because this transmission system is STM-256, therefore, the data length of the Frame that receiving terminal receives is 16byte, such as represented the data of each byte respectively by A0 ~ A15, Fig. 2 then particularly illustrates the data handling procedure of 6 level production lines in the present embodiment:
In streamline 1, Frame A0 ~ A15 that what system docking received translate, and carry out inverse translating operations to it, generates the former data of Frame, translates processing mode can refer to object lesson below for concrete reverse:
The Frame in advance through translating that receiving terminal receives is:
| 7D | 5E | 7D | 5D | 7D | 5E | 7D | 5D |
Reversing the former data of translating rear generated Frame to this Frame is then:
| 7E | 7D | 7E | 7D |
Simultaneously, Frame is completed reverse translate while, system also can generate to should the 16bit label information of former data for showing in 16 current bytes which data is effective (being labeled as 1), which data is invalid (being labeled as 0), for object lesson above, the label information then generated is 01010101 of 8bit, it should be noted that, owing to also there is gap character 7E between Frame, therefore for this gap character, it also belongs to invalid data, can 0 be designated, the Frame through translation process that so receiving terminal receives just generate after the process of streamline 1 this Frame former data and to should former data label information and be transferred in streamline 2,
Then 16bytes data just can be divided into groups by streamline 2, here be then be divided into 4 subregions, wherein, the data length of each subregion is identical, and, as can be seen from Figure 2, according to the address of Frame, former data are divided into groups when dividing into groups to former data, A0, A1 ... A15 is address continuous print, so much group of subdata is then respectively A0 ~ A3, A4 ~ A7, A8 ~ A11, A12 ~ A15, and also cannot by A0, A3, A4, A6 forms one group, simultaneously, can adjust flexibly according to the bit wide of current transmission system and clock frequency for divided group number and the data length often organized when dividing into groups to former data, because the bit wide of transmission system is 256bit in this example, therefore, Frame be divide into 4 groups, often organize 4bytes data,
And owing to there is " cavity " in former data, namely, invalid data, therefore after to former packet, just can carry out registration process respectively to organizing subdata (i.e. multiple subregion) more, same with reference to object lesson above, when carrying out registration process to multiple subregion, remove by the invalid data in each subregion, thus form:
| 7E | 7D | 7E | 7D |
Wherein, when carrying out registration process to each subregion, the processing mode adopted is identical, so after respectively registration process is completed to each subregion, just can upgrade label information, wherein, because the former data of 16bytes divide into four groups, label information 16bit also can be divided into four groups by understanding, often organize 4bit, which is valid data to identify data in corresponding subregion respectively, and which is invalid data, and then the label information of the data of the subregion of four after registration process and correspondence just can be sent to streamline 3 by streamline 2;
And in order to ensure the reliability of the invalid data removed in former data, namely streamline 2 is avoided not removed completely by invalid data, multiple subregion can be carried out merging treatment by streamline 3, it should be noted that, when carrying out merging treatment to multiple subregion, only continuous print subregion between address is merged, such as A0 ~ A3, A4 ~ A7, A8 ~ A11, A12 ~ A15 are called subregion 1,2,3,4 respectively, so when carrying out subregion and merging, then can adopt the one in following Merge Scenarios, such as 1 and 2-in-1 also, 3 and 4 merge, or 2 and 3 merge, or 1,2,3,4 merge, and also cannot by non-conterminous 1, 3 merge, and in this example, the merging mode adopted is then by subregion 1 and also 2-in-1, subregion 3 and 4 merges, thus form new subregion A0 ~ A7 and subregion A8 ~ A15, and respectively registration process is carried out to two subregions, and alignment thereof is identical, thus remove the subregion A0 ~ A7 (data length is less than 8 bytes) after merging and the invalid data in subregion A8 ~ A15 (data length is less than 8 bytes), then just can upgrade label information, wherein, for the understanding of label information, also four group echo information can be merged into two groups, be respectively 8bit, and which is valid data to be labeled with data in corresponding subregion respectively, which is invalid data, then streamline 3 just can by through with and the data of two subregions after registration process and corresponding label information are sent to streamline 4,
Then streamline 4 can carry out further merging treatment to the data of two subregions received, concrete, A0 ~ A15 is obtained by carrying out merging to A0 ~ A7 and A8 ~ A15, and the A0 ~ A15 after being combined carries out registration process, thus the invalid data removed in A0 ~ A15, thus generate effective former data; Same, can upgrade label information, wherein, for the understanding of label information here, can be understood as and two group echo information are merged into one group, is 16bit, and the valid data (being labeled as 1) of the A0 ~ A15 obtained after being labeled with merging, herein then without the mark 0 of invalid data, then streamline 4 just can will merge and alignment after effective former data be sent to streamline 5;
Optionally, in 128 bit system, minimum frame (calculating by 24bytes), because the data of a clock cycle process are 16bytes, therefore, minimum needs two clock cycle just can end of transmission, namely, other 8bytes then process in another clock cycle (i.e. last cycle of frame), so the object of streamline 5 carries out the data assemblies during week, the effective former data assemblies alignd is made to become each cycle to be all the valid data of 8bytes, but can occur in " cavity " between the frame period, so last clock cycle (frame end) data can produce a valid register separately, for storage mark information,
The object of streamline 6 is then the frame having " cavity " to occur is write data buffer inside, and the data that so from then on data buffer reads are continuous print frame structure, and make the frame structure of alignment.
And due to above-mentioned specific embodiment for transmission system be STM-256, and if the transmission system of other bit wides, the STM-64 of such as 64bit, so only need remove the streamline of several redundancy, and carry out the technical scheme of alignment operation relative to direct concerning reversing the Frame after translating, the present invention is by being carried out packet transaction, same alignment thereof is adopted to carry out registration process respectively to often organizing, obviously, reduce the complexity of algorithm and the complexity of inverse translation circuit, thus reception is translated in the reverse being beneficial to Frame, improve the receiving velocity of frame data.
According to embodiments of the invention, additionally provide a kind of data processing equipment of transmission system.
As shown in Figure 3, comprise according to the data processing equipment of the embodiment of the present invention:
Inverse translation module 31, for by carrying out inverse translation process to the Frame in advance through translating received, generates the former data of Frame;
Grouping module 32, for dividing into groups to former data according to the bit wide of transmission system and clock frequency, generating and organizing subdata more;
First alignment module 33, for by carrying out registration process respectively to many group subdatas, removes the invalid data in many group subdatas;
Merging module 34, for by carrying out merging treatment to the many groups subdata through registration process, generating effective former data.
Wherein, in one embodiment, merge module 34 to comprise: merge submodule (not shown), for merging the many groups subdata through registration process; Second alignment module (not shown), for by carrying out registration process to by the many groups subdata after merging, removing the invalid data in the many groups subdata after merging, thus generating effective former data.
Wherein, in one embodiment, the data length of many group subdatas is identical.
In addition, comprise further according to the data processing equipment of the embodiment of the present invention:
Generation module (not shown), for by carrying out inverse translation process through the Frame of translating in advance to what receive, generates the label information of corresponding former data, and wherein, label information is for marking valid data in former data and invalid data.
In sum, by means of technique scheme of the present invention, by carrying out packet transaction by reversing the frame data after translating, and by adopting same alignment thereof to carry out registration process respectively to every Framed Data, thus achieve reversing the removing fast and effectively of invalid data in the frame data after translating, reduce the complexity of the complexity of algorithm and the inverse translation circuit of high-bit width transmission system, and improve the receiving velocity of frame data, reception is translated in the reverse being beneficial to Frame.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a data processing method for transmission system, is characterized in that, comprising:
By carrying out inverse translation process to the Frame in advance through translating received, generate the former data of described Frame;
According to the bit wide of described transmission system and clock frequency, described former data are divided into groups, generate and organize subdata more;
By carrying out registration process respectively to described many group subdatas, remove the invalid data in described many group subdatas;
By carrying out merging treatment to the described many group subdatas through described registration process, generate effective former data.
2. data processing method according to claim 1, is characterized in that, carries out merging treatment comprise the described many group subdatas through described registration process:
Described many group subdatas through described registration process are merged;
By carrying out registration process to by the many groups subdata after merging, removing the invalid data in the many groups subdata after merging, thus generating described effective former data.
3. data processing method according to claim 1, is characterized in that, the data length of described many group subdatas is identical.
4. data processing method according to claim 1 and 2, is characterized in that, comprises further:
By carrying out inverse translation process through the Frame of translating in advance to what receive, generate the label information of corresponding described former data, wherein, described label information is for marking valid data in described former data and invalid data.
5. data processing method according to claim 4, is characterized in that, comprises further:
After respectively registration process is carried out to described many group subdatas, described label information is upgraded.
6. data processing method according to claim 4, is characterized in that, comprises further:
After many groups subdata after being combined carries out registration process, described label information is upgraded.
7. a data processing equipment for transmission system, is characterized in that, comprising:
Inverse translation module, for by carrying out inverse translation process to the Frame in advance through translating received, generates the former data of described Frame;
Grouping module, for dividing into groups to described former data according to the bit wide of described transmission system and clock frequency, generating and organizing subdata more;
First alignment module, for by carrying out registration process respectively to described many group subdatas, removes the invalid data in described many group subdatas;
Merging module, for by carrying out merging treatment to the described many group subdatas through described registration process, generating effective former data.
8. data processing equipment according to claim 7, is characterized in that, described merging module comprises: merge submodule, for merging the described many group subdatas through described registration process; Second alignment module, for by carrying out registration process to by the many groups subdata after merging, removing the invalid data in the many groups subdata after merging, thus generating described effective former data.
9. data processing equipment according to claim 7, is characterized in that, the data length of described many group subdatas is identical.
10. the data processing equipment according to claim 7 or 8, is characterized in that, comprises further:
Generation module, for by carrying out inverse translation process through the Frame of translating in advance to what receive, generates the label information of corresponding described former data, and wherein, described label information is for marking valid data in described former data and invalid data.
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| US20050021745A1 (en) * | 1999-06-18 | 2005-01-27 | Bookman Lawrence A. | Segmentation and processing of continuous data streams using transactional semantics |
| CN1506807A (en) * | 2002-10-25 | 2004-06-23 | ض� | Method and apparatus for parallel right-shift merging of data |
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Application publication date: 20150429 |