CN103369593A - Method for compressing and decompressing Ethernet message and network element equipment - Google Patents
Method for compressing and decompressing Ethernet message and network element equipment Download PDFInfo
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- CN103369593A CN103369593A CN2012100985714A CN201210098571A CN103369593A CN 103369593 A CN103369593 A CN 103369593A CN 2012100985714 A CN2012100985714 A CN 2012100985714A CN 201210098571 A CN201210098571 A CN 201210098571A CN 103369593 A CN103369593 A CN 103369593A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
Abstract
The invention provides a method for compressing and decompressing an Ethernet message and network element equipment. The method for compressing the Ethernet message comprises receiving the Ethernet message; and compressing a Layer 2 message header and or a Layer 3 message header of the Ethernet message. According to the invention, cost of Ethernet headers can be saved, the utilization rate of air interface bandwidth can be improved, and limited air interface bandwidth resource can be saved.
Description
Technical field
The present invention relates to communication field, in particular, relate to method and the network element device of a kind of compression and decompression Ethernet message in the microwave communication process.
Background technology
As one of Main Means of modern communications transmission, microwave communication can provide powerful professional transmittability, and large, the long-distance transmission quality of transmission capacity is stable because it has, small investment, cost is low, the construction period is short, the characteristics such as easy to maintenance, just be widely used in the bearer network that 2G/3G moves, becoming the important selection of mobile operator transferring voice and data service.Because its point-to-point transmission feature, microwave communication is also between base station and the base station, transmit as backbone network between base station and base station control station and the IAD.
The general paired use of common microwave communication node, each website generally comprises modem module and transmitter unit.Modem module (IDU) generally is put in indoor; Rf transmitter unit (ODU) generally is positioned on the steel tower with antenna.Development along with mobile communication, the business of transmitting in the network also becomes more diverse, no matter be that the Ethernet data that TDM (time division multiplexing) is professional, E1 is professional or traditional is professional, all will be in IDU framing, then send by eating dishes without rice or wine, eating dishes without rice or wine of network element device is generally all limited, is accompanied by the development of technology, the demand of bandwidth of air-interface increases day by day, how to save limited bandwidth of air-interface and becomes and become more and more important.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method and network element device of compression and decompression Ethernet message, to save the expense of ethernet header.
In order to solve the problems of the technologies described above, the invention provides a kind of method of compressed ethernet message, comprising:
Receive the Ethernet message;
Layer 2 heading and/or layer 3 heading to described Ethernet message compress processing.
Further, said method also has following characteristics: described layer 2 heading to the Ethernet message compress processing, comprising:
The data of described layer 2 heading and the data in the first compaction table are compared,
If data consistent, then replace described layer 2 heading with compressing mark corresponding in described the first compaction table;
If inconsistent, then generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade described the first compaction table, when receive the identical Ethernet message of data of layer 2 heading next time, replace the data of described layer 2 heading with the compressing mark of this generation.
Further, said method also has following characteristics: described layer 2 heading to the Ethernet message compress after the processing, also comprise:
Transmit the described Ethernet message after processing, described Ethernet message carries check information.
Further, said method also has following characteristics: described layer 3 heading to the Ethernet message compress processing, comprising:
With described Ethernet message the layer 3 heading data be divided into a plurality of trifles, the data of each trifle and the data in the second compaction table are compared,
If the data of each trifle are all consistent with data in described the second compaction table, then replace the data of described layer 3 heading with corresponding compressing mark;
If exist the data of part trifle and the data in described the second compaction table inconsistent, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and upgrade described the second compaction table;
If the data in the data of each trifle and described the second compaction table are all inconsistent, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and upgrade described the second compaction table, when receive the identical Ethernet message of data of layer 3 heading next time, replace the data of described layer 3 heading with the compressing mark of this distribution.
Further, said method also has following characteristics: described layer 3 heading to the Ethernet message compress processing, comprising:
The data of layer 3 heading of described Ethernet message are divided into a plurality of groups, are divided into a plurality of trifles in each group, the data of each trifle in each group and the data in the second compaction table are compared,
If the data of each trifle in the group are all consistent with the data in described the second compaction table, then replace the data of this group with compressing mark corresponding to this group;
If the data that have the part trifle and the data in described the second compaction table in the group are inconsistent, then with the data of this group of data replacement of the different little section number of compressing mark, the indicating section of this group correspondence and trifle, and upgrade described the second compaction table;
If data and the data in described the second compaction table of each trifle in the group are all inconsistent, it then is compressing mark of this set of dispense, be somebody's turn to do the data of organizing with this compressing mark, whole each the different little section numbers of indication and the data replacement of each trifle, and upgrade described the second compaction table, when receive the Ethernet message that the corresponding data of organizing are identical in layer 3 heading next time, replace the data of this group with the compressing mark of this distribution.
Further, said method also has following characteristics: upgrade described the second compaction table and comprise:
If exist the data of part trifle and the data in described the second compaction table inconsistent, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then;
If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
Further, said method also has following characteristics: described layer 3 heading to the Ethernet message compress after the processing, also comprise:
Transmit the described Ethernet message after processing, described Ethernet message carries check information.
In order to address the above problem, the present invention also provides a kind of method of the Ethernet message that decompresses, and comprising:
Receive the Ethernet message;
Layer 2 heading and/or layer 3 heading to described Ethernet message carry out decompression.
Further, said method also has following characteristics: layer 2 heading to described Ethernet message carry out decompression, comprising:
Only comprise compressing mark if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading;
Only comprise compressing mark and check information if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark;
If judge in the data of described layer 2 heading also to comprise compressing mark, then take out this compressing mark in the data of described layer 2 heading, the corresponding relation of this compressing mark with the data of described layer of 2 heading deposited in described the first decompression table.
Further, said method also has following characteristics: layer 3 heading to described Ethernet message carry out decompression, comprising:
Only comprise compressing mark if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading;
Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark;
If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out;
Comprise compressing mark, indication all different little section numbers and the data of trifle if judge the data of described layer 3 heading, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
Further, said method also has following characteristics: layer 3 heading to described Ethernet message carry out decompression, comprising:
Comprise multi-group data if judge the data of described layer 3 heading, then the data of each group decompressed, comprising:
If the data in the judgement group only comprise compressing mark, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group;
If the data in the judgement group only comprise compressing mark and check information, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group;
If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out;
If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
In order to address the above problem, the present invention also provides a kind of network element device, comprising:
The first module is used for receiving the Ethernet message;
The second module is used for layer 2 heading and/or layer 3 heading of described Ethernet message are compressed processing.
Further, said network element equipment also has following characteristics: described the second module comprises:
First module is used for the data of described layer 2 heading and the data of the first compaction table are compared, if consistent, the data of then replacing described layer 2 heading with compressing mark corresponding in described the first compaction table; If inconsistent, then generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade described the first compaction table, when receiving the identical Ethernet message of data of layer 2 heading, replace the data of described layer 2 heading with the compressing mark of this generation.
Further, said network element equipment also has following characteristics: described the second module also comprises:
Second unit transmits the described Ethernet message after described first module is processed, and described Ethernet message carries check information.
Further, said network element equipment also has following characteristics: described the second module comprises:
Unit the 3rd, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of trifles, the data of each trifle and the data in the second compaction table are compared, if the data of each trifle are all consistent with data in described the second compaction table, then replace the data of described layer 3 heading with corresponding compressing mark; If exist the data of part trifle and the data in described the second compaction table inconsistent, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and trigger updating block and upgrade described the second compaction table; If the data in the data of each trifle and described the second compaction table are all inconsistent, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and trigger updating block and upgrade described the second compaction table, when receiving the identical Ethernet message of data of layer 3 heading, replace the data of described layer 3 heading with the compressing mark of this distribution;
Described updating block, if inconsistent for the data of the data that have the part trifle and described the second compaction table, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then; If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
Further, said network element equipment also has following characteristics: described the second module comprises:
Unit the 4th, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of groups, be divided into a plurality of trifles in each group, the data of each trifle in each group and the data in the second compaction table are compared, if the data of each trifle in the group are all consistent with the data in described the second compaction table, then replace the data of this group with compressing mark corresponding to this group; If the data that have the part trifle and the data in described the second compaction table in the group are inconsistent, then replace the data of this group with the inconsistent little section number of compressing mark, data of this group correspondence and the data of the inconsistent trifle of data, and trigger updating block and upgrade described the second compaction table; If data and the data in described the second compaction table of each trifle in the group are all inconsistent, it then is compressing mark of this set of dispense, be somebody's turn to do the data of group with the data replacement of this compressing mark, each little section number and each trifle, and trigger updating block and upgrade described the second compaction table, during the data of corresponding group are identical in receiving layer 3 heading Ethernet message, replace the data of this group with the compressing mark of this distribution;
Updating block, if inconsistent for the data of the data that have the part trifle and described the second compaction table, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then; If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
Further, said network element equipment also has following characteristics: described the second module also comprises:
Unit the 5th is used for transmitting the described Ethernet message after described Unit the 3rd or described the 4th cell processing, and described Ethernet message carries check information.
Further, said network element equipment also has following characteristics: described network element device also comprises:
The 3rd module is carried out decompression to layer 2 heading and/or layer 3 heading of the Ethernet message that receives.
Further, said network element equipment also has following characteristics: described the 3rd module comprises:
First module if be used for judging that the data of described layer 2 heading only comprise compressing mark, is then taken out corresponding data according to this compressing mark from the first decompression table, restore the data of described layer 2 heading; Only comprise compressing mark and check information if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge in the data of described layer 2 heading also to comprise compressing mark, then take out this compressing mark in the data of described layer 2 heading, the corresponding relation of this compressing mark with the data of described layer of 2 heading deposited in described the first decompression table.
Further, said network element equipment also has following characteristics: described the 3rd module comprises:
Second unit if be used for judging that the data of described layer 3 heading only comprise compressing mark, then takes out corresponding data according to this compressing mark from the second decompression table, restore the data of described layer 3 heading; Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; Comprise compressing mark, indication all different little section numbers and the data of trifle if judge the data of described layer 3 heading, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
Further, said network element equipment also has following characteristics: described the 3rd module comprises:
Unit the 3rd comprises multi-group data if judge the data of described layer 3 heading, then triggers Unit the 4th data of each group are decompressed;
Described Unit the 4th only comprises compressing mark if specifically be used for the data of judgement group, then takes out corresponding data according to this compressing mark from the second decompression table, restores the data of this group; If the data in the judgement group only comprise compressing mark and check information, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group; If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
To sum up, the invention provides a kind of method and network element device of compression and decompression Ethernet message, to save the expense of ethernet header, can improve the utilance of bandwidth of air-interface, save limited bandwidth of air-interface resource.
Description of drawings
Fig. 1 is the flow chart of method of the compressed ethernet message of the embodiment of the invention;
Fig. 2 is the flow chart of method of the decompression Ethernet message of the embodiment of the invention;
Fig. 3 is the flow chart of compression layer 2 headings of the embodiment of the invention;
Fig. 4 is the flow chart of decompression layer 2 heading of the embodiment of the invention;
Fig. 5 is the flow chart of compression layer 3 headings of the embodiment of the invention;
Fig. 6 is the flow chart of decompression layer 3 heading of the embodiment of the invention;
Fig. 7 is the schematic diagram of the network element device of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove, in the situation that do not conflict, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Intensification along with IPization trend, increasing business will be encapsulated into the Ethernet message and transmit, but the expense of ethernet packet header is at least 38 bytes, when we only are concerned about business, this expense large percentage, therefore the present invention proposes the Ethernet heading is compressed, and to improve the utilance of bandwidth of air-interface, saves limited bandwidth of air-interface resource.And for this problem of compression of Ethernet data, in the present microwave communication, also do not have relevant solution.
Fig. 1 is the flow chart of method of the compressed ethernet message of the embodiment of the invention, and as shown in Figure 1, the method for the present embodiment may further comprise the steps:
S11, reception Ethernet message;
S12, to described Ethernet message the layer 2 heading and/or the layer 3 heading compress processing.
Fig. 2 is the flow chart of method of the decompression Ethernet message of the embodiment of the invention, and as shown in Figure 2, the method for the present embodiment may further comprise the steps:
S21, reception Ethernet message;
S22, to described Ethernet message the layer 2 heading and/or the layer 3 heading carry out decompression.
The processing method to the Ethernet message that the embodiment of the invention provides comprises: to the compression of layer 2 heading and/or the compression of layer 3 heading, can identify Vlan (VLAN) sign, realize compression and the adaptive decompression of message, and have error correcting capability, guarantee system's normal operation.The present invention reduces the data volume in the transmission by the compression to the Ethernet heading in the business, thereby reaches the purpose of saving bandwidth of air-interface.
For the compression of layer 2 heading, as shown in Figure 3, may further comprise the steps:
Step 2001: receive an IP message (being the Ethernet message), the data of described layer 2 heading and the data in layer 2 compaction table are compared;
Particularly, receive an IP message after, open the compression of layer 2 heading, MAC (Media Access Control, a media interviews control) data and layer 2 compaction table of message are compared, identical then for hitting, turn step 2002, difference then enters update mode, turns step 2003.
Step 2002: the data of replacing described layer 2 heading with compressing mark corresponding in layer 2 compaction table;
In the time of the data consistent in the MAC heading that arrives and layer 2 compaction table, layer 2 enters compressive state, and will transmit in link this moment with the MAC part that layer 2 compressing mark of a correspondence in layer 2 compaction table are replaced whole layer 2.
Step 2003: generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade layer 2 compaction table;
Like this, when receive the identical Ethernet message of data of layer 2 heading next time, just can replace with the compressing mark of this generation the data of described layer of 2 heading.
When the data in the MAC heading that arrives and layer 2 compaction table were inconsistent, layer 2 heading entered update mode, and generate a more new logo this moment, can be added to before the MAC of layer 2 data, then is sent to the opposite end, and carries out the renewal of compaction table.
The decompression process of layer 2 heading as shown in Figure 4, may further comprise the steps:
Step 2010: the network element device of decompressor end at first detects whether there are layer 2 compressing mark in the identification Ethernet message, if do not exist, then this Ethernet message is compressed packet not, turns step 2020; If exist, further identification is the compressive state message, or the update mode message, if the compressive state message then turns step 2030; If the update mode message then turns step 2040.
In the present embodiment, only comprise compressing mark if network element device is judged the data of described layer 2 heading, or only comprise and compressing mark and check information then are identified as the compressive state message.
Step 2020: do transparent transmission for unpressed message and process.
Step 2030: for the message under the compressive state, at first identify compressing mark, will in the table that decompresses, take out corresponding layer 2MAC data according to this compressing mark, restore original message.
Step 2040: for upgrading message, decompressor end is at first taken out compressing mark, and restores original MAC data from message, then, changes step 2050 over to.
Step 2050: enter decompression and show synchronous update mode, the corresponding relation between compressing mark and the original layers 2MAC data that restore is deposited in the decompression table, guarantee that compaction table is conciliate compaction table consistent.
For layer 3 compression process, as shown in Figure 5, may further comprise the steps:
Step 3001: the grouping: after receiving a new Ethernet message, if identify this Ethernet for the layer 3 message, then to this message the layer 3 heading data divide into groups, follow-up compression process is the compression process to each group.
Step 3002: merogenesis: be the N trifle with every group of data subdividing, each trifle is exactly the minimum unit of message compression;
For example take 16bit as a joint.
Step 3003: compression: layer 3 compaction table of every group of message data with this locality are compared, be handled as follows respectively according to comparative result:
If the data of each trifle in the group are all consistent with the data of layer in 3 compaction tables, then replace the data of this group with the compressing mark of this group correspondence;
If the data that have the part trifle in the group are inconsistent with the data in layer 3 compaction table, then replace the data of this group with the data of the different little section number of this group corresponding compressing mark, indicating section and trifle, and upgrade layer 3 compaction table, then turn step 3004;
If the data of each trifle in the group are all inconsistent with the data in layer 3 compaction table, it then is compressing mark of this set of dispense, be somebody's turn to do the data of group with the data replacement of this compressing mark, each little section number and each trifle, and renewal layer 3 compaction table, like this, during the data of corresponding group are identical in receiving layer 3 heading Ethernet message, namely can replace with the compressing mark of this distribution the data of this group, then turn step 3004.
Step 3004: framing, the message after every group of compression is carried out framing, for example, compressing mark is front, and after the different trifle in every group is added in message, sends out.
Compression for layer 3 message also can be divided into groups, and directly a minute trifle is compressed, as may further comprise the steps:
Step 3011, with described Ethernet message the layer 3 heading data be divided into a plurality of trifles;
Step 3012, the data of each trifle and data in layer 3 compaction table are compared, are handled as follows respectively according to comparative result:
If the data of each trifle are all consistent with the data of layer in 3 compaction tables, then replace the data of described layer 3 heading with corresponding compressing mark; If the data that have a part trifle are inconsistent with the data in layer 3 compaction table, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and upgrade layer 3 compaction table; If the data of each trifle are all inconsistent with the data in layer 3 compaction table, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and renewal layer 3 compaction table, like this, when receiving the identical Ethernet message of data of layer 3 heading, can replace with the compressing mark of this distribution the data of described layer 3 heading.
Decompression flow process for layer 3 message (not grouping) as shown in Figure 6, may further comprise the steps:
Step 3010: it is common message, compressed packet or renewal message that the decompressor end network element device will parse layer 3 message, and common message is done transparent transmission and processed, and for compressed packet, turns step 3020, turns step 3030 to upgrading message;
In the present embodiment, only comprise compressing mark or only comprise compressing mark and check information or comprise little section number that compressing mark, indicating section are different and the data of trifle if network element device is judged the data of described layer 3 heading, then be identified as compressed packet; Comprise compressing mark, the whole different little section numbers of indication and the data of trifle if judge the data of described layer 3 heading, then be identified as the renewal message.
Step 3020: the decompression to compressed packet is as follows:
If only comprise compressing mark if network element device is judged the data of described layer 3 heading, then from decompressing table, layer 3 takes out corresponding data according to this compressing mark, restore the data of described layer 3 heading;
Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from layer 3 decompresses table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark;
If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from layer 3 decompresses table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out.
Step 3030: with the compressing mark in the data of layer 3 heading, indication all the corresponding relation of the data of different little section number and trifle deposit layer 3 a decompression table in, be updated in the local decompression table with the message that will recover, keep consistent with compaction table.
If divide into groups such as above-mentioned Fig. 3 during compression, then extract decompression by group, the decomposition principle of decomposition principle and Fig. 6 is similar, and is specific as follows:
Comprise multi-group data if judge the data of described layer 3 heading, then the data of each group decompressed, comprising:
If the data in the judgement group only comprise compressing mark, then from decompressing table, layer 3 takes out corresponding data according to this compressing mark, restore the data of this group;
If the data in the judgement group only comprise compressing mark and check information, then from decompressing table, layer 3 takes out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group;
If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from layer 3 decompresses table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out;
If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in the described layer 3 decompression table.
Adopt message compression method as above, can be when guaranteeing compression efficiency, guarantee the application of normal message, actual network environment is complicated and changeable, can not have single fixedly message, the method that the present invention explains can adapt to actual network environment, and in the situation that resource occupation is few, guarantee good compression ratio; Especially, the message that compresses processing can be carrying check information, or can have check information in each compressing mark, after decompression, decompressor end can be carried out verification to message, if the check results of message decompress(ion) and check value are inconsistent, then enter process of feedback, as follows:
Step 4001: the network element device of decompressor end produces the feedback message according to the order of feedback marking head+compressing mark (or compression number), sends to compression end with link.
Step 4002: the network element device Recognition feedback marking head of compression end parse the compression number of response, and the local compaction table content that compressing mark is corresponding empties.
In the compressibility of the embodiment of the invention, can introduce the mechanism of a kind of feedback as above, this mechanism can guarantee that notice is to compression end in the mistake that decompresses, reach compaction table and conciliate the consistent purpose of compaction table, compression function is correct when guaranteeing long-play.
In the present embodiment, network element device only can configure layer 2 heading are compressed processing, also can be configured to only layer 3 heading be compressed processing, also can be configured to layer 2 heading and layer 3 heading are all compressed processing.
Fig. 7 is the schematic diagram of the network element device of the embodiment of the invention, and as shown in Figure 7, the network element device of the present embodiment comprises:
The first module is used for receiving the Ethernet message;
The second module is used for layer 2 heading and/or layer 3 heading of described Ethernet message are compressed processing.
Wherein, described the second module comprises:
First module is used for the data of described layer 2 heading and the data of the first compaction table are compared, if consistent, the data of then replacing described layer 2 heading with compressing mark corresponding in described the first compaction table; If inconsistent, then generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade described the first compaction table, when receiving the identical Ethernet message of data of layer 2 heading, replace the data of described layer 2 heading with the compressing mark of this generation.
Wherein, described the second module can also comprise:
Second unit transmits the described Ethernet message after described first module is processed, and described Ethernet message carries check information.
In a preferred embodiment, described the second module can also comprise:
Unit the 3rd, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of trifles, the data of each trifle and the data in the second compaction table are compared, if the data of each trifle are all consistent with data in described the second compaction table, then replace the data of described layer 3 heading with corresponding compressing mark; If exist the data of part trifle and the data in described the second compaction table inconsistent, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and trigger updating block and upgrade described the second compaction table; If the data in the data of each trifle and described the second compaction table are all inconsistent, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and trigger updating block and upgrade described the second compaction table, when receiving the identical Ethernet message of data of layer 3 heading, replace the data of described layer 3 heading with the compressing mark of this distribution.
Unit the 4th, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of groups, be divided into a plurality of trifles in each group, the data of each trifle in each group and the data in the second compaction table are compared, if the data of each trifle in the group are all consistent with the data in described the second compaction table, then replace the data of this group with compressing mark corresponding to this group; If the data that have the part trifle and the data in described the second compaction table in the group are inconsistent, then replace the data of this group with the inconsistent little section number of compressing mark, data of this group correspondence and the data of the inconsistent trifle of data, and trigger updating block and upgrade described the second compaction table; If data and the data in described the second compaction table of each trifle in the group are all inconsistent, it then is compressing mark of this set of dispense, be somebody's turn to do the data of group with the data replacement of this compressing mark, each little section number and each trifle, and trigger updating block and upgrade described the second compaction table, during the data of corresponding group are identical in receiving layer 3 heading Ethernet message, replace the data of this group with the compressing mark of this distribution.
Described updating block, if inconsistent for the data of the data that have the part trifle and described the second compaction table, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then; If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
Wherein, described the second module can also comprise:
Unit the 5th is used for transmitting the described Ethernet message after described Unit the 3rd or described the 4th cell processing, and described Ethernet message carries check information.
Wherein, described network element device can also comprise:
The 3rd module is carried out decompression to layer 2 heading and/or layer 3 heading of the Ethernet message that receives.
Wherein, described the 3rd module can comprise:
First module if be used for judging that the data of described layer 2 heading only comprise compressing mark, is then taken out corresponding data according to this compressing mark from the first decompression table, restore the data of described layer 2 heading; Only comprise compressing mark and check information if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge in the data of described layer 2 heading also to comprise compressing mark, then take out this compressing mark in the data of described layer 2 heading, the corresponding relation of this compressing mark with the data of described layer of 2 heading deposited in described the first decompression table.
Second unit if be used for judging that the data of described layer 3 heading only comprise compressing mark, then takes out corresponding data according to this compressing mark from the second decompression table, restore the data of described layer 3 heading; Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; Comprise compressing mark, indication all different little section numbers and the data of trifle if judge the data of described layer 3 heading, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
In a preferred embodiment, the 3rd module can also comprise:
Unit the 3rd comprises multi-group data if judge the data of described layer 3 heading, then triggers Unit the 4th data of each group are decompressed;
Described Unit the 4th only comprises compressing mark if specifically be used for the data of judgement group, then takes out corresponding data according to this compressing mark from the second decompression table, restores the data of this group; If the data in the judgement group only comprise compressing mark and check information, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group; If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (21)
1. the method for a compressed ethernet message comprises:
Receive the Ethernet message;
Layer 2 heading and/or layer 3 heading to described Ethernet message compress processing.
2. the method for claim 1 is characterized in that: described layer 2 heading to the Ethernet message compress processing, comprising:
The data of described layer 2 heading and the data in the first compaction table are compared,
If data consistent, then replace described layer 2 heading with compressing mark corresponding in described the first compaction table;
If inconsistent, then generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade described the first compaction table, when receive the identical Ethernet message of data of layer 2 heading next time, replace the data of described layer 2 heading with the compressing mark of this generation.
3. method as claimed in claim 2 is characterized in that: described layer 2 heading to the Ethernet message compress after the processing, also comprise:
Transmit the described Ethernet message after processing, described Ethernet message carries check information.
4. the method for claim 1 is characterized in that: described layer 3 heading to the Ethernet message compress processing, comprising:
With described Ethernet message the layer 3 heading data be divided into a plurality of trifles, the data of each trifle and the data in the second compaction table are compared,
If the data of each trifle are all consistent with data in described the second compaction table, then replace the data of described layer 3 heading with corresponding compressing mark;
If exist the data of part trifle and the data in described the second compaction table inconsistent, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and upgrade described the second compaction table;
If the data in the data of each trifle and described the second compaction table are all inconsistent, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and upgrade described the second compaction table, when receive the identical Ethernet message of data of layer 3 heading next time, replace the data of described layer 3 heading with the compressing mark of this distribution.
5. the method for claim 1 is characterized in that: described layer 3 heading to the Ethernet message compress processing, comprising:
The data of layer 3 heading of described Ethernet message are divided into a plurality of groups, are divided into a plurality of trifles in each group, the data of each trifle in each group and the data in the second compaction table are compared,
If the data of each trifle in the group are all consistent with the data in described the second compaction table, then replace the data of this group with compressing mark corresponding to this group;
If the data that have the part trifle and the data in described the second compaction table in the group are inconsistent, then with the data of this group of data replacement of the different little section number of compressing mark, the indicating section of this group correspondence and trifle, and upgrade described the second compaction table;
If data and the data in described the second compaction table of each trifle in the group are all inconsistent, it then is compressing mark of this set of dispense, be somebody's turn to do the data of organizing with this compressing mark, whole each the different little section numbers of indication and the data replacement of each trifle, and upgrade described the second compaction table, when receive the Ethernet message that the corresponding data of organizing are identical in layer 3 heading next time, replace the data of this group with the compressing mark of this distribution.
6. such as claim 4 or 5 described methods, it is characterized in that: upgrade described the second compaction table and comprise:
If exist the data of part trifle and the data in described the second compaction table inconsistent, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then;
If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
7. such as claim 4 or 5 described methods, it is characterized in that: described layer 3 heading to the Ethernet message compress after the processing, also comprise:
Transmit the described Ethernet message after processing, described Ethernet message carries check information.
8. method of Ethernet message that decompresses comprises:
Receive the Ethernet message;
Layer 2 heading and/or layer 3 heading to described Ethernet message carry out decompression.
9. method as claimed in claim 8 is characterized in that: layer 2 heading to described Ethernet message carry out decompression, comprising:
Only comprise compressing mark if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading;
Only comprise compressing mark and check information if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark;
If judge in the data of described layer 2 heading also to comprise compressing mark, then take out this compressing mark in the data of described layer 2 heading, the corresponding relation of this compressing mark with the data of described layer of 2 heading deposited in described the first decompression table.
10. method as claimed in claim 8 is characterized in that: layer 3 heading to described Ethernet message carry out decompression, comprising:
Only comprise compressing mark if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading;
Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark;
If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out;
Comprise compressing mark, indication all different little section numbers and the data of trifle if judge the data of described layer 3 heading, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
11. method as claimed in claim 8 is characterized in that: layer 3 heading to described Ethernet message carry out decompression, comprising:
Comprise multi-group data if judge the data of described layer 3 heading, then the data of each group decompressed, comprising:
If the data in the judgement group only comprise compressing mark, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group;
If the data in the judgement group only comprise compressing mark and check information, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group;
If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out;
If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
12. a network element device comprises:
The first module is used for receiving the Ethernet message;
The second module is used for layer 2 heading and/or layer 3 heading of described Ethernet message are compressed processing.
13. network element device as claimed in claim 12 is characterized in that: described the second module comprises:
First module is used for the data of described layer 2 heading and the data of the first compaction table are compared, if consistent, the data of then replacing described layer 2 heading with compressing mark corresponding in described the first compaction table; If inconsistent, then generate a compressing mark, transmit and carry the described Ethernet message of this compressing mark, and upgrade described the first compaction table, when receiving the identical Ethernet message of data of layer 2 heading, replace the data of described layer 2 heading with the compressing mark of this generation.
14. network element device as claimed in claim 13 is characterized in that: described the second module also comprises:
Second unit transmits the described Ethernet message after described first module is processed, and described Ethernet message carries check information.
15. network element device as claimed in claim 12 is characterized in that: described the second module comprises:
Unit the 3rd, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of trifles, the data of each trifle and the data in the second compaction table are compared, if the data of each trifle are all consistent with data in described the second compaction table, then replace the data of described layer 3 heading with corresponding compressing mark; If exist the data of part trifle and the data in described the second compaction table inconsistent, then replace the data of described layer 3 heading with the different little section number of corresponding compressing mark, indicating section and the data of trifle, and trigger updating block and upgrade described the second compaction table; If the data in the data of each trifle and described the second compaction table are all inconsistent, then distribute a compressing mark for each trifle, with the whole data of the described layer of data replacement 3 heading of different each little section number and each trifle of this compressing mark, indication, and trigger updating block and upgrade described the second compaction table, when receiving the identical Ethernet message of data of layer 3 heading, replace the data of described layer 3 heading with the compressing mark of this distribution;
Described updating block, if inconsistent for the data of the data that have the part trifle and described the second compaction table, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then; If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
16. network element device as claimed in claim 12 is characterized in that: described the second module comprises:
Unit the 4th, be used for the data of layer 3 heading of described Ethernet message are divided into a plurality of groups, be divided into a plurality of trifles in each group, the data of each trifle in each group and the data in the second compaction table are compared, if the data of each trifle in the group are all consistent with the data in described the second compaction table, then replace the data of this group with compressing mark corresponding to this group; If the data that have the part trifle and the data in described the second compaction table in the group are inconsistent, then replace the data of this group with the inconsistent little section number of compressing mark, data of this group correspondence and the data of the inconsistent trifle of data, and trigger updating block and upgrade described the second compaction table; If data and the data in described the second compaction table of each trifle in the group are all inconsistent, it then is compressing mark of this set of dispense, be somebody's turn to do the data of group with the data replacement of this compressing mark, each little section number and each trifle, and trigger updating block and upgrade described the second compaction table, during the data of corresponding group are identical in receiving layer 3 heading Ethernet message, replace the data of this group with the compressing mark of this distribution;
Updating block, if inconsistent for the data of the data that have the part trifle and described the second compaction table, be the data of the inconsistent trifle of data with data replacement corresponding in described the second compaction table then; If the data in the data of each trifle and described the second compaction table are all inconsistent, then the corresponding relation of the compressing mark of distributing and the data of each trifle is directly replaced original data in described the second compaction table in described the second compaction table of adding or with pre-defined rule.
17. such as claim 15 or 16 described network element devices, it is characterized in that: described the second module also comprises:
Unit the 5th is used for transmitting the described Ethernet message after described Unit the 3rd or described the 4th cell processing, and described Ethernet message carries check information.
18. network element device as claimed in claim 12 is characterized in that: described network element device also comprises:
The 3rd module is carried out decompression to layer 2 heading and/or layer 3 heading of the Ethernet message that receives.
19. network element device as claimed in claim 18 is characterized in that: described the 3rd module comprises:
First module if be used for judging that the data of described layer 2 heading only comprise compressing mark, is then taken out corresponding data according to this compressing mark from the first decompression table, restore the data of described layer 2 heading; Only comprise compressing mark and check information if judge the data of described layer 2 heading, then from the first decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 2 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge in the data of described layer 2 heading also to comprise compressing mark, then take out this compressing mark in the data of described layer 2 heading, the corresponding relation of this compressing mark with the data of described layer of 2 heading deposited in described the first decompression table.
20. network element device as claimed in claim 18 is characterized in that: described the 3rd module comprises:
Second unit if be used for judging that the data of described layer 3 heading only comprise compressing mark, then takes out corresponding data according to this compressing mark from the second decompression table, restore the data of described layer 3 heading; Only comprise compressing mark and check information if judge the data of described layer 3 heading, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of described layer 3 heading; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries described compressing mark; If judge little section number that the data of described layer 3 heading comprise that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; Comprise compressing mark, indication all different little section numbers and the data of trifle if judge the data of described layer 3 heading, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
21. network element device as claimed in claim 18 is characterized in that: described the 3rd module comprises:
Unit the 3rd comprises multi-group data if judge the data of described layer 3 heading, then triggers Unit the 4th data of each group are decompressed;
Described Unit the 4th only comprises compressing mark if specifically be used for the data of judgement group, then takes out corresponding data according to this compressing mark from the second decompression table, restores the data of this group; If the data in the judgement group only comprise compressing mark and check information, then from the second decompression table, take out corresponding data according to this compressing mark, restore the data of this group; Then according to described check information the data that restore are carried out verification, if check results is wrong, then the transmitting terminal to described Ethernet message returns the feedback message that carries compressing mark corresponding to this group; If the data in the judgement group comprise little section number that compressing mark, indicating section are different and the data of trifle, then taking out corresponding data according to this compressing mark from the second decompression table, is the data of this trifle with the data replacement corresponding with this little section number in the data of taking out; If the data in the judgement group comprise compressing mark, indication all different little section numbers and the data of trifle, then with this compressing mark, indication all the corresponding relation of the data of different little section number and trifle deposit in described the second decompression table.
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| PCT/CN2013/073712 WO2013149587A1 (en) | 2012-04-05 | 2013-04-03 | Ethernet message compression and decompression methods and network element device |
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| CN201210098571.4A CN103369593B (en) | 2012-04-05 | 2012-04-05 | A kind of method compressing reconciliation compressed ethernet message and network element device |
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| CN111107051A (en) * | 2019-11-01 | 2020-05-05 | 京信通信系统（中国）有限公司 | Message transmission method and device, computer equipment and storage medium |
| WO2021248869A1 (en) * | 2020-06-10 | 2021-12-16 | 京信网络系统股份有限公司 | Packet processing method and apparatus, and communication device and communication system |
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| WO2013149587A1 (en) | 2013-10-10 |
| CN103369593B (en) | 2016-08-03 |
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