CN103051434A - Data decompression and decompression processing methods and devices - Google Patents
Data decompression and decompression processing methods and devices Download PDFInfo
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Abstract
The invention provides a data decompression method, a data decompression device, a data decompression processing method and a data decompression processing device. The data decompression method comprises the following steps that: a decompressor transmits feedback information for informing a compressor of synchronizing a context, wherein the feedback information is transmitted when the decompressor detects the asynchronism of the context; after transmitting the feedback information, the decompressor caches a subsequently received data packet to be decompressed; the decompressor receives synchronization information for synchronizing the context from the compressor; and the decompressor decompresses the data packet to be decompressed according to the synchronization information. According to the scheme, a packet loss phenomenon caused by the asynchronism of the context is effectively reduced, and the communication quality is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of decompression, decompression process and device of data.
Background technology
Because the restriction of physical condition, it is lower that the Radio Link in the mobile communication system and wire link are compared transmission rate, and the error rate is higher.In order effectively to utilize limited wireless signal-path band width resource, introduced robustness header compression (RObust HeaderCompress is hereinafter to be referred as ROHC) technology.The core of ROHC technology is to utilize information redundancy between the grouping of Business Stream to come information in the packets headers between the transparent direct connected node of compression and decompression.
Minimum significance bit (Least Significant Bits is referred to as LSB) algorithm is the important algorithm in the ROHC technology, and it is mainly used in compressing chief series number (Master Sequence Number is referred to as MSN) information.The LSB compression algorithm is by using a reference value V_ref and designated value P, with one to be compressed, the value A that accounts for the k1 bit carries out the LSB compression, obtains subsequently after the compression, takies bit k2(k2 still less＜k1), the value B related with V_ref.By LSB compression, unconverted bit is deleted, and the B value is represented is least significant bit (being the low k2 position of B=A) from the value V_ref value of changing to A.The process that adopts the value after the LSB decompression will be compressed to reduce is opposite with said process.
ROHCv2(RFC5225), namely second of the ROHC technology version proposes clearly to support that the packet flow of out of order delivery decompresses.It has introduced the concept of the ratio that reorders (Reorder_ratio), and namely compressor reducer can in transmission course, by adjusting LSBP value size, be sought the rational balance point, thereby reach optimum transmission quality between robustness and compression efficiency.Relation in the LSB algorithm between P value and the Reorder_ratio specifically can be referring to shown in Figure 1, and wherein, the p among Fig. 1, k are natural number.
In data transmission procedure, particularly in the general scene of network condition, error code and the packet loss of certain probability always appears in bottom, and this context that will cause the compressor reducer of ROHC layer and decompression machine is step-out to a certain extent.The correct identification of device if the untimely correction of this step-out process, packed data can't be extracted.If the upper layer application protocol of bottom carrying is to be similar to the such voice flow of RTP (Real-time Transport Protocol is referred to as RTP), then can show to a certain degree frame losing and time-delay, greatly affect communication quality.
There being the scene of feedback path, when decompression machine detects the context step-out, can in time notify compressor reducer active synchronization context by sending NACK or STATIC_NACK.Compressor reducer after receiving these two kinds of passive feedback packet of NACK or STATIC_NACK, then can send initially immediately refresh-dynamic part (IR_DYN) or initialization refresh the context that (IR) refreshes decompression machine.There are following two kinds of scenes, one, the feedback packet that decompression machine sends is received immediately by compressor reducer, during, compressor reducer does not send any compressed package, specifically as shown in Figure 2.Be that decompression machine does not abandon any compressed package after sending passive feedback packet.Its two, passive feedback packet that decompression machine sends is by the bottom link delay, during, compressor reducer still selects normally to send compressed package.Since this moment decompression machine and compressor reducer context step-out, these compressed packages can't be by correct decompress(ion), specifically as shown in Figure 3.These can't decompress(ion) compressed package can affect to a certain extent the communication quality of whole packet flow.
For the problems referred to above in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
In correlation technique, decompression machine is after detecting the context step-out and sending passive feedback information, decompression machine can't the follow-up technical problems such as compressed package that receive of correct decompressed, the invention provides a kind of decompression, decompression process and device of data, to address the above problem at least.
According to an aspect of the present invention, provide a kind of decompression method of data, having comprised: decompression machine sends the feedback information that is used for notice compressor reducer synchronous context, and wherein, this feedback information sends after decompression machine detects the context step-out; After sending above-mentioned feedback information, the decompression machine buffer memory is follow-up receive treat the decompressed data bag; Decompression machine receives the synchronizing information that is used for synchronous context that compressor reducer sends; Decompression machine is treated the decompressed data bag according to above-mentioned synchronizing information and is decompressed.
Preferably, decompression machine is treated the decompressed data bag according to synchronizing information and decompressed, and comprising: the decompression machine utilization receives the sequencing for the treatment of the decompressed data bag, decompresses according to treating the decompressed data bag from backward front order.
Preferably, said method also comprises: the quantity for the treatment of the decompressed data bag at buffer memory arrives predetermined quantity, when perhaps not receiving synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.
Preferably, decompression machine is treated before the decompressed data bag decompresses according to synchronizing information, and also comprise: decompression machine carries out verification to synchronizing information, wherein, verification by after synchronizing information be used for treating the decompressed data bag and decompress.
According to another aspect of the present invention, provide a kind of decompression process of data, having comprised: compressor reducer receives the feedback information of the synchronous context of decompression machine transmission, and wherein, feedback information sends after decompression machine detects the context step-out; After receiving feedback information, compressor reducer sends the synchronizing information that is used for synchronous context to decompression machine, and wherein, synchronizing information is used for the decompressed data bag for the treatment of of decompression machine buffer memory after sending feedback information is decompressed.
According to a further aspect of the invention, provide a kind of decompressing device of data, be arranged in decompression machine, having comprised: detection module, for detection of context step-out whether; Sending module is used for when detection module detects the context step-out, sends the feedback information that is used for notice compressor reducer synchronous context; Cache module is used for after sending module sends feedback information, buffer memory is follow-up receive treat the decompressed data bag; Receiver module is used for receiving the synchronizing information that is used for synchronous context that compressor reducer sends; Decompression module is used for treating the decompressed data bag according to above-mentioned synchronizing information and decompresses.
Preferably, above-mentioned decompression module is used for utilizing receiving the sequencing for the treatment of the decompressed data bag, decompresses according to treating the decompressed data bag from backward front order.
Preferably, said apparatus also comprises: stop cache module, be used for arriving predetermined quantity in the quantity for the treatment of the decompressed data bag of buffer memory, when perhaps not receiving synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.
Preferably, said apparatus also comprises: correction verification module, be used for synchronizing information is carried out verification, wherein, verification by after synchronizing information be used for treating the decompressed data bag and decompress.
According to a further aspect of the invention, provide a kind of decompression device of data, having comprised: receiver module, for the feedback information of the synchronous context that receives the decompression machine transmission, wherein, feedback information sends after decompression machine detects the context step-out; Sending module is used for sending the synchronizing information that is used for synchronous context to decompression machine after receiving feedback information, and wherein, synchronizing information is used for the decompressed data bag for the treatment of of decompression machine buffer memory after sending feedback information is decompressed.
By the present invention, after employing sends the feedback information that is used for notice compressor reducer synchronous context to decompression machine, the follow-up compressed package that receives of buffer memory, and the technological means that the compressed package of buffer memory is decompressed according to the synchronizing information that receives, solved in the correlation technique, decompression machine is after detecting the context step-out and sending passive feedback information, decompression machine can't the follow-up technical problems such as compressed package that receive of correct decompressed, thereby effectively reduced because the packet loss phenomenon that the context step-out causes provides communication quality.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is according to concerning schematic diagram between P value and the reorder_ratio in the LSB algorithm of correlation technique;
Flow chart when Fig. 2 normally arrives at for the passive feedback packet according to correlation technique;
Flow chart when Fig. 3 postpones to arrive at for the passive feedback packet according to correlation technique;
Fig. 4 is the flow chart according to the decompression method of the data of the embodiment of the invention 1;
Fig. 5 is the structured flowchart according to the decompressing device of the data of the embodiment of the invention 1;
Fig. 6 is another structured flowchart according to the decompressing device of the data of the embodiment of the invention 1;
Fig. 7 is the flow chart according to the decompression process of the data of the embodiment of the invention 2;
Fig. 8 is the structured flowchart according to the decompression device of the data of the embodiment of the invention 2;
Fig. 9 postpones to arrive at and open the principle process schematic diagram of decompression machine bag buffer memory and repair for the passive feedback packet according to the embodiment of the invention;
Figure 10 is according to the unlatching bag buffer memory of the embodiment of the invention 3 and repair function flow chart;
Figure 11 is the bag reception flow chart according to the unlatching bag buffer memory of the embodiment of the invention 3 and the decompression machine behind the repair function;
Figure 12 is the compressed package caching process flow chart according to the embodiment of the invention 3;
Figure 13 is the flow chart that the buffer memory bag is carried out repair process according to the embodiment of the invention;
Figure 14 is according to the pass closure buffer memory of the embodiment of the invention 3 and the process chart of repair function.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Consider in the correlation technique, decompression machine is after detecting the context step-out and sending passive feedback information, decompression machine can't the follow-up technical problems such as compressed package that receive of correct decompressed, provide relevant solution below in conjunction with embodiment 1-3, the existing detailed description in detail.
Present embodiment describes from the decompression machine angle.Fig. 4 is the flow chart according to the decompression method of the data of the embodiment of the invention 1.As shown in Figure 4, the method comprises:
Step S402, decompression machine send the feedback information that is used for notice compressor reducer synchronous context, and wherein, this feedback information sends after decompression machine detects the context step-out;
Step S404, after sending feedback information, the decompression machine buffer memory is follow-up receive treat the decompressed data bag;
Step S406, decompression machine receive the synchronizing information that is used for synchronous context that compressor reducer sends;
Step S408, decompression machine is treated the decompressed data bag according to synchronizing information and is decompressed.
By above-mentioned treatment step, owing to adopted decompression machine by after sending the feedback information that is used for notice compressor reducer synchronous context, buffer memory is follow-up receive treat the decompressed data bag, and according to the synchronizing information that is used for synchronous context of compressor reducer feedback this is treated the technological means that the decompressed data bag decompresses, therefore, reduce to a certain extent the generation of packet loss phenomenon, further improved communication quality.
In the present embodiment, step S402 can show as following implementation procedure: support out of order decompress(ion) and current decompression machine when decompression machine and detect context during step-out, decompression machine is initiated the feedback information of notice compressor reducer synchronous context, for example is used for reflection decompression machine de-compression failure or the serious passive feedback information of decompression step loss condition.At this moment, decompression machine can be opened compressed package buffer memory and repair function, with variable R edecomp_Flag set.
Corresponding with the above-mentioned specific implementation process of step S402, step S404 can show as following implementation procedure in the specific implementation: above-mentioned in decompression machine buffer memory and repair function unlatching, it is the occasion of Redecomp_Flag set, decompression machine can be waited for the bag of synchronous context, if the passiveness that before sends feedback (NACK), then wait for the IR_DYN bag, if transmission is static passive feedback (STATIC_NACK), then wait for the IR bag.In this process, decompression machine can the buffer memory other types the correct packet of decompress(ion).In case correctly receive the context sync packet, the data of buffer memory before then beginning to attempt repairing.
Among the step S408, decompression machine has multiple to the above-mentioned mode for the treatment of that the decompressed data bag decompresses of buffer memory, for example can decompress successively according to receiving the above-mentioned sequencing of decompressed data bag for the treatment of, perhaps treats at random decompressed data and decompresses.Consider in the LSB algorithm, on time or position apart from IR or the nearer packet of IR_DYN, stronger with the relevance of IR or IR_DYN, the success rate of repairing is higher, in a preferred implementation of present embodiment, the decompression machine utilization receives the sequencing for the treatment of the decompressed data bag, decompresses according to treating the decompressed data bag from backward front order.Specifically can adopt the following form of expression:
In the compressed package repair process, take the inverted order reparation, generally, initiating passive feeding back in the process that receives the IR/IR_DYN bag, changing maximum territories in the packet flow generally is SN/TS/IPID, for other territories, the territory in the use I R/IR_DYN of the territory in the use that can the show compressed package to be repaired or the implicit expression bag.Even some compressed packages can successfully be repaired, in order to guarantee contextual synchronism, the contextual bag of final updated necessarily is the IR/IR_DYN bag.
For the unrestricted buffer memory that prevents from treating the decompressed data bag to above-mentioned, take more resource, and then affect communication quality, the quantity for the treatment of the decompressed data bag at buffer memory arrives predetermined quantity, when perhaps not receiving synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.Specifically can show as following processing procedure:
Open at decompression machine buffer memory and repair function, i.e. the occasion of Redecomp_Flag set, decompression machine meeting buffer memory is the packet of decompress(ion) correctly.Can open or close this algorithm by buffer threshold is set.Such as, method one can avoid unconfined data cached by largest buffered bag number is set, because the upper layer application of the general carrying of ROHC is real time communication, it does not allow bottom to produce extra delay.Surpass buffer threshold quantity and also do not receive IR/IR_DYN, empty the data of buffer memory, close this algorithm; Method two can according to upper layer application, arrange maximum delay time.When reaching maximum delay time and also not receiving IR/IR_DYN, empty the data of buffer memory, close buffer memory and repair function, simultaneously with above-mentioned sign Redecomp_Flag clear 0.
In the present embodiment, decompression machine is treated before the decompressed data bag decompresses according to synchronizing information, can also carry out verification to synchronizing information, wherein, verification by after synchronizing information be used for treating the decompressed data bag and decompress.If the context sync packet mistake that decompression machine receives (being that verification is not passed through) is then abandoned this buffer memory and repair process.
A kind of decompressing device of data also is provided in the present embodiment, and this device is arranged in decompression machine, is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation, and the below describes the module that relates in this device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.Fig. 5 is the structured flowchart according to the decompressing device of the data of the embodiment of the invention 1.As shown in Figure 5, this device comprises:
By the function of above-mentioned modules realization, and said method embodiment is similar, can reduce to a certain extent equally the generation of packet loss phenomenon, further improves communication quality.
In the present embodiment, above-mentioned decompression module 58 is used for utilizing receiving the sequencing for the treatment of the decompressed data bag, decompresses according to treating the decompressed data bag from backward front order.
In the present embodiment, in order to prevent unrestrictedly buffer memory compressed package, as shown in Figure 6, said apparatus also comprises: stop cache module 60, be used for arriving predetermined quantity in the quantity for the treatment of the decompressed data bag of buffer memory, when perhaps not receiving synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.
In the present embodiment, as shown in Figure 6, said apparatus can also comprise with lower module: correction verification module 62, be used for synchronizing information is carried out verification, wherein, verification by after synchronizing information be used for treating the decompressed data bag and decompress.
Present embodiment is corresponding with embodiment 1, describes from the compressor reducer angle.Fig. 7 is the flow chart according to the decompression process of the data of the embodiment of the invention 2.As shown in Figure 7, the method comprises:
Step S702, compressor reducer receive the feedback information of the synchronous context of decompression machine transmission, and wherein, this feedback information sends after decompression machine detects the context step-out;
Step S704, after receiving feedback information, compressor reducer sends the synchronizing information that is used for synchronous context to decompression machine, and wherein, this synchronizing information is used for the decompressed data bag for the treatment of of decompression machine buffer memory after sending described feedback information is decompressed.
By above-mentioned treatment step, function to compressor reducer has been done improvement, thereby the technical problem corresponding with the function of decompression machine, and then solved decompression machine after detecting the context step-out and sending passive feedback information, that decompression machine can't the follow-up compressed package that receives of correct decompressed.
In the present embodiment, also provide a kind of decompression device of data, this device is arranged in compressor reducer, is used for realizing said method, and as shown in Figure 8, this device comprises:
Sending module 82 is used for sending the synchronizing information that is used for synchronous context to decompression machine after receiving feedback information, and wherein, synchronizing information is used for the decompressed data bag for the treatment of of decompression machine buffer memory after sending described feedback information is decompressed
Embodiment 3
The main design idea of present embodiment is, after decompression machine sends passive feedback packet, the follow-up compressed package of receiving of buffer memory, when due-in IR/IR_DYN to expectation wraps, thereby the inverted order decompress(ion) is previous because the context step-out caused the correctly compressed package of decompress(ion) again.At last, as much as possible recoverable compressed package continuous in the buffer memory is delivered to processing on the upper strata, thereby the bottom packet loss is dropped to minimum on the impact of ROHC layer, improve the communication quality of upper layer application.Specifically can be referring to Fig. 9, as shown in Figure 9, the main design thought of present embodiment comprises following treatment step:
Step S902, the passive feedback information (STATIC_NACK/NACK) that sends at decompression machine is not when arriving at compressor reducer, and compressor reducer normally sends compressed package 1;
Step S904 carries out decompress(ion) to compressed package 1, buffer memory compressed package 1 after the decompress(ion) failure;
Step S906, compressor reducer sends compressed package 2 to decompression machine;
Step S908, decompression machine carries out decompress(ion) to compressed package 2, buffer memory bag 2 after the decompress(ion) failure;
Step S910, when arriving at compressor reducer, compressor reducer sends the information (being IR/IR_DYN bag 3) of synchronous context to decompression machine at above-mentioned passive feedback information (STATIC_NACK/NACK);
Step S912, decompression machine utilize IR/IR_DYN to wrap compressed package 1 and the compressed package 2 of 3 repair caches;
Step S914 delivers compressed package 1, compressed package 2 and IR/IR_DYN bag 3 in order successively.
Figure 10 is according to the unlatching bag buffer memory of the embodiment of the invention 3 and repair function flow chart.As shown in figure 10, this flow process comprises following treatment step:
Step S1002 opens bag buffer memory and repair function flow startup, enters step S1004;
Step S1004 is if decompression machine enters step S1006 owing to detect the context step-out and need to initiate passive feedback; Otherwise decompression machine context and compressor reducer are synchronous, enter step S1012;
Step S1006 if the version of ROHC is supported out of order decompress(ion), enters step S1008; Otherwise, enter step S1012;
Step S1008 judges current compressed package buffer memory and the repair function whether opened, and checks sign Redecomp_Flag, if Redecomp_Flag is 0, enters step S1010; Otherwise, enter step S1012;
Step S1010, decompression machine need to open bag buffer memory and repair function, and Redecomp_Flag is set to 1, enter step S1012;
Step S1012 opens bag buffer memory and repair function flow process and finishes.
Figure 11 is the bag reception flow chart according to the unlatching bag buffer memory of the embodiment of the invention 3 and the decompression machine behind the repair function.As shown in figure 11, this flow process comprises:
Step S1102, the decompression machine bag behind unlatching bag buffer memory and the repair function receives flow startup, enters step S1104;
Step S1104, if open bag buffer memory and repair function, namely Redecomp_Flag puts 1, enters step S1106; Otherwise, enter step S1116;
Step S1106 judges the IR/IR_DYN whether current bag that receives is expected, if so, enters step S1108; Otherwise, think that compressor reducer temporarily also do not receive the passiveness feedback that decompression machine sends, the current compressed package that receives of buffer memory enters step S1114;
Step S1108, decoding IR/IR_DYN bag if CRC check is passed through, enters step S1112; Otherwise, think that this context synchronizing process is failed, abandon compressed package buffer memory and repair process, enter step S1110;
Step S1110 closes closure buffer memory and repair process, enters step S1116;
Step S1112 successfully receives the IR/IR_DYN bag, guarantees the repair free of charge multiple process, enters step S1116;
Step S1114, decompression machine wait for to receive the IR/IR_DYN bag, and the compressed package that temporary cache can't decompress(ion) enters step S1116;
Step S1116, the decompression machine bag behind unlatching bag buffer memory and the repair function receive flow process to be finished.
Below in conjunction with Figure 12 the related compressed package caching process flow process of present embodiment is described in further detail, as shown in figure 12, this flow process comprises:
Step S1202, compressed package caching process flow startup enters step S1204;
Can step S1204 judges whether to reach buffer threshold, namely proceed to wrap buffer memory and repair function, if can continue buffer memory, enters step S1206; Otherwise, enter step S1208;
Step S1206, the current compressed data packets of receiving of buffer memory enters step S1210;
Step S1208 closes closure buffer memory and repair function, enters step S1210;
Step S1210, compressed package caching process flow process finishes;
The buffer memory that present embodiment is related to below in conjunction with Figure 13 is guaranteed the repair free of charge multiple handling process and is described in further detail, and as shown in figure 13, this flow process comprises:
Step S1302, buffer memory guarantee the repair free of charge multiple handling process and start, and enter step S1304;
Step S1304, because the closer to IR/IR_DYN bag, compressed package more may be repaired, the compressed package according to all buffer memorys of mode decompress(ion) of inverted order enters step S1306;
Step S1306 judges that can the buffer memory compressed package of current reparation pass through CRC check, if repair successfully, enters step S1308; Otherwise, enter step S1310;
Step S1308 judges whether to exist buffer memory compressed package to be repaired, if exist, enters step S1304; Otherwise, enter step S1310;
Step S1310 according to the reception order of compressed package, delivers all packets of successfully repairing and IR/IR_DYN bag to the upper strata together, enters step S1312;
Step S1312 finishes this bag buffer memory and repairs operation, enters step S1314;
Step S1314 uses the IR/IR_DYN bag of successful decompress(ion) to upgrade the decompress(ion) context, finishes the context synchronizing process, enters step S1316;
Step S1316, buffer memory guarantee the repair free of charge multiple processing procedure and finish.
Below in conjunction with Figure 14 pass closure buffer memory and repair process flow process involved in the present invention are described in further detail, as shown in figure 14, this flow process comprises:
Step S1402 closes the closure buffer memory and repairs flow startup, enters step S1404;
Step S1404 empties the compressed package of buffer memory, enters step S1404;
Step S1406 is set to 0 with Redecomp_Flag, closes closure buffer memory and repair function, enters step S1408;
Step S1408 closes closure buffer memory and repair function and finishes.
Can find out by above-described embodiment, the embodiment of the invention has realized following beneficial effect: when decompression machine is found the context step-out, the correctly compressed package of decompress(ion) of buffer memory some, after decompress(ion) context to be compressed is synchronous, again attempt the data cached bag of decompress(ion), thereby reduce to the full extent the compressed package that may abandon in the context synchronizing process, and the bottom packet loss is dropped to minimum on the impact of ROHC layer, improve to a certain extent the communication quality of upper level applications.
In another embodiment, also provide a kind of software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred implementation are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the decompression method of data is characterized in that, comprising:
Decompression machine sends the feedback information that is used for notice compressor reducer synchronous context, and wherein, described feedback information sends after described decompression machine detects the context step-out;
After sending described feedback information, described decompression machine buffer memory is follow-up receive treat the decompressed data bag;
Described decompression machine receives the synchronizing information that is used for synchronous context that described compressor reducer sends;
Described decompression machine decompresses to the described decompressed data bag for the treatment of according to described synchronizing information.
2. method according to claim 1 is characterized in that, described decompression machine decompresses to the described decompressed data bag for the treatment of according to described synchronizing information, comprising:
Described decompression machine utilization receives the described sequencing for the treatment of the decompressed data bag, according to from backward front order the described decompressed data bag for the treatment of being decompressed.
3. method according to claim 1 is characterized in that, also comprises:
The quantity for the treatment of the decompressed data bag buffer memory described arrives predetermined quantity, when perhaps not receiving described synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.
4. each described method in 3 according to claim 1 is characterized in that, described decompression machine according to described synchronizing information to described treat that the decompressed data bag decompresses before, also comprise:
Described decompression machine carries out verification to described synchronizing information, wherein, verification by after described synchronizing information be used for the described decompressed data bag for the treatment of is decompressed.
5. the decompression process of data is characterized in that, comprising:
Compressor reducer receives the feedback information of the synchronous context of decompression machine transmission, and wherein, described feedback information sends after described decompression machine detects the context step-out;
After receiving described feedback information, described compressor reducer sends the synchronizing information that is used for synchronous context to described decompression machine, and wherein, described synchronizing information is used for the decompressed data bag for the treatment of of described decompression machine buffer memory after sending described feedback information is decompressed.
6. the decompressing device of data is arranged in decompression machine, it is characterized in that, comprising:
Detection module is for detection of context step-out whether;
Sending module is used for when described detection module detects described context step-out, sends the feedback information that is used for notice compressor reducer synchronous context;
Cache module is used for after described sending module sends described feedback information, buffer memory is follow-up receive treat the decompressed data bag;
Receiver module is used for receiving the synchronizing information that is used for synchronous context that described compressor reducer sends;
Decompression module is used for according to described synchronizing information the described decompressed data bag for the treatment of being decompressed.
7. device according to claim 6 is characterized in that, described decompression module is used for utilizing receiving the described sequencing for the treatment of the decompressed data bag, according to from backward front order the described decompressed data bag for the treatment of being decompressed.
8. device according to claim 6, it is characterized in that, also comprise: stop cache module, be used for arriving predetermined quantity in the described quantity of decompressed data bag for the treatment of of buffer memory, when perhaps not receiving described synchronizing information within a predetermined period of time, empty buffer memory the decompressed data bag that remains and stop the follow-up reception of buffer memory treat the decompressed data bag.
9. each described device in 8 according to claim 6 is characterized in that, also comprises:
Correction verification module is used for described synchronizing information is carried out verification, wherein, verification by after described synchronizing information be used for the described decompressed data bag for the treatment of is decompressed.
10. the decompression device of data is characterized in that, comprising:
Receiver module, for the feedback information of the synchronous context that receives the decompression machine transmission, wherein, described feedback information sends after described decompression machine detects the context step-out;
Sending module, be used for after receiving described feedback information, send the synchronizing information that is used for synchronous context to described decompression machine, wherein, described synchronizing information is used for the decompressed data bag for the treatment of of described decompression machine buffer memory after sending described feedback information is decompressed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105570680A CN103051434A (en) | 2012-12-20 | 2012-12-20 | Data decompression and decompression processing methods and devices |
| PCT/CN2013/081989 WO2014094446A1 (en) | 2012-12-20 | 2013-08-21 | Data decompression and decompression processing method and device |
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| CN2012105570680A CN103051434A (en) | 2012-12-20 | 2012-12-20 | Data decompression and decompression processing methods and devices |
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Cited By (8)
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| WO2014094446A1 (en) * | 2012-12-20 | 2014-06-26 | 中兴通讯股份有限公司 | Data decompression and decompression processing method and device |
| CN105556924A (en) * | 2013-09-23 | 2016-05-04 | 高通股份有限公司 | Out-of-synchronization detection and correction during compression |
| WO2018014729A1 (en) * | 2016-07-20 | 2018-01-25 | 深圳市中兴微电子技术有限公司 | Method, system and device for context updating, and storage medium |
| CN109217975A (en) * | 2017-06-29 | 2019-01-15 | 大唐移动通信设备有限公司 | A kind of data processing method and device |
| CN109842905A (en) * | 2017-11-28 | 2019-06-04 | 中国移动通信有限公司研究院 | Dictionary configuration method, network side equipment and user terminal |
| CN111385263A (en) * | 2018-12-29 | 2020-07-07 | 电信科学技术研究院有限公司 | Method for maintaining data packet header compression information and communication equipment |
| CN112333047A (en) * | 2020-11-16 | 2021-02-05 | 展讯通信（上海）有限公司 | Data transmission method, device and equipment |
| WO2022111365A1 (en) * | 2020-11-26 | 2022-06-02 | 展讯通信（上海）有限公司 | Data transmission method and apparatus, device, storage medium, and program product |
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| WO2014094446A1 (en) * | 2012-12-20 | 2014-06-26 | 中兴通讯股份有限公司 | Data decompression and decompression processing method and device |
| CN105556924A (en) * | 2013-09-23 | 2016-05-04 | 高通股份有限公司 | Out-of-synchronization detection and correction during compression |
| CN105556924B (en) * | 2013-09-23 | 2019-09-03 | 高通股份有限公司 | Method and apparatus for detection of loss of mains and correction during compressing |
| CN107645746A (en) * | 2016-07-20 | 2018-01-30 | 深圳市中兴微电子技术有限公司 | A kind of context updating method, system and equipment |
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| CN107645746B (en) * | 2016-07-20 | 2021-03-16 | 深圳市中兴微电子技术有限公司 | Context updating method, system and equipment |
| CN109217975A (en) * | 2017-06-29 | 2019-01-15 | 大唐移动通信设备有限公司 | A kind of data processing method and device |
| CN109842905A (en) * | 2017-11-28 | 2019-06-04 | 中国移动通信有限公司研究院 | Dictionary configuration method, network side equipment and user terminal |
| CN111385263A (en) * | 2018-12-29 | 2020-07-07 | 电信科学技术研究院有限公司 | Method for maintaining data packet header compression information and communication equipment |
| CN111385263B (en) * | 2018-12-29 | 2022-05-24 | 大唐移动通信设备有限公司 | Method for maintaining data packet header compression information and communication equipment |
| CN112333047A (en) * | 2020-11-16 | 2021-02-05 | 展讯通信（上海）有限公司 | Data transmission method, device and equipment |
| CN112333047B (en) * | 2020-11-16 | 2022-04-26 | 展讯通信（上海）有限公司 | Data transmission method, device and equipment |
| WO2022111365A1 (en) * | 2020-11-26 | 2022-06-02 | 展讯通信（上海）有限公司 | Data transmission method and apparatus, device, storage medium, and program product |
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| WO2014094446A1 (en) | 2014-06-26 |
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