CN101562498B - Encoding and decoding transmission method of multi-join data stream cracking as well as device and system thereof - Google Patents

Abstract

The invention discloses an encoding transmission method of multi-join data stream cracking. The method comprises the following steps: digital fountain encoding is carried out on an original data packet; the encoded data packet is carried and transmitted by different radio access technologies (RAT); and encoding and transmission of the original data packet is stopped after a command of successful decoding of the original data packet is received. The invention further discloses a decoding transmission method of multi-join data stream cracking, an encoding transmission device, a decoding transmission device and a multi-join data stream cracking processing system. The method, the device and the system can help eliminate dependency on channels, prevent application of a retransmission mechanism and lower signaling cost.

Description

Coding and decoding transmission method, equipment and the system of multi-link data flow cracking

Technical field

The present invention relates to communication technical field, relate in particular to coding and decoding transmission method, equipment and the system of multi-link data flow cracking.

Background technology

Along with the development of radio communication, emerged various wireless access technologys (Radio Access Technology, RAT).These different wireless access technology own characteristics are not quite similar, like coverage, transmission bandwidth, propagation delay time, expense etc.Utilize these technological characteristics, the heterogeneous network that multiple wireless access technology merges is formed in the cooperation each other of learning from other's strong points to offset one's weaknesses, and not only can improve the network resource utilization of operator, also can abundant more business experience be provided for the user simultaneously.

In the middle of heterogeneous network, multimode terminal can communicate through multiple wireless access technology simultaneously, i.e. and realization " multi-link " (Multiple Radio Accesses, MRA).The terminal is supported samely when professional through multi-link, and (Quality of Service, QoS), and the thing followed will be referred to data flow cracking (traffic splitting) problem can to obtain higher service quality.So-called data flow cracking is meant to be supported samely when professional when the terminal through multi-link, and how system need determine the data flow with same business to be cracked into different sons to flow, thereby be carried on the different RAT.Data flow cracking scheme will directly have influence on professional overall quality of service.

At present in the existing multi-link data flow cracking scheme; According to different criterions undressed original data stream is directly split; The principle of its fractionation is varied: as according to professional self attributes data flow being divided into elementary streams and enhanced flow; Elementary streams is carried on the high RAT of reliability, and enhanced flow then carries on other RAT, thereby has improved the reliability of transmission; Can also data flow be cut apart by the effective transmission speed equal proportion according to the transmission rate of different RAT, thereby can bring higher overall transmission rate, improve the validity of transmission.The inventor finds that all there is following weak point in these schemes by analysis:

One, needs channel condition information.Present existing cracking scheme all need be with the input information of channel condition information as cracking.Whether the cracking scheme can reach purpose of design greatly relies on the accurate assurance to channel condition information.And because the dynamic time variation of wireless channel makes these be restricted the very high cracking scheme performance of channel dependent property.

Two, need retransmission mechanism.Present existing cracking scheme is for the correct reception that guarantees data flow all need design retransmission mechanism.

Three, need a large amount of signaling consumptions.The signaling consumption of present existing cracking scheme mainly contains two aspects: the one, be used to carry out the measurement and the transmission of channel condition information, because the transmission conditions of different RAT need gather so that carry out the data flow cracking at transmitting terminal; The 2nd, be used for the feedback of receiving terminal, for example to send out ACK and give transmitting terminal sending wrong grouping need retransmit or correct receives grouping.

Summary of the invention

The embodiment of the invention provides a kind of coding and transmission method of multi-link data flow cracking, in order to remove the dependence to channel, avoids the application of retransmission mechanism, saves signaling consumption, and this method comprises:

Digital fountain sign indicating number coding is carried out in intercepting L data grouping from original data packet sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data grouping sequentially again and carry out digital fountain sign indicating number coding;

L data after at every turn encoding are divided into groups to transfer to different radio access technologies RAT carrying and transmission;

Stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet.

The embodiment of the invention also provides a kind of decoding transmission method of multi-link data flow cracking, in order to remove the dependence to channel, avoids the application of retransmission mechanism, saves signaling consumption, and this method comprises:

The packet of reception behind digital fountain sign indicating number coding, said packet is carried and transmission by different radio access technologies RAT;

During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered;

When deciphering successfully, return decoding and successfully instruct.

The embodiment of the invention also provides a kind of coding transmission equipment of multi-link data flow cracking, in order to remove the dependence to channel, avoids the application of retransmission mechanism, saves signaling consumption, and this equipment comprises:

Coding module; Be used for dividing into groups to carry out digital fountain sign indicating number coding from L data of original data packet intercepting sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding;

The transmission bearer module is used for different radio access technologies RAT carrying and transmission are transferred in L data grouping after at every turn encoding;

Control module is used for stopping coding and the transmission to said original data packet after the decoding of said original data packet successfully instructed receiving.

The embodiment of the invention also provides a kind of decoding transmission equipment of multi-link data flow cracking, in order to remove the dependence to channel, avoids the application of retransmission mechanism, saves signaling consumption, and this equipment comprises:

Receiver module is used to receive the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT;

Decoding module when being used for the number of data packets before the number of data packets that receives is greater than coding, is deciphered the packet that receives;

Sending module is used for when deciphering successfully, returning decoding and successfully instructing.

The embodiment of the invention also provides a kind of multi-link data flow cracking treatment system, in order to remove the dependence to channel, avoids the application of retransmission mechanism, saves signaling consumption, and this system comprises:

Coding transmission equipment; Be used for dividing into groups to carry out digital fountain sign indicating number coding from L data of original data packet intercepting sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding; L data after at every turn encoding are divided into groups to transfer to different radio access technologies RAT carrying and transmission; And, stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet;

The decoding transmission equipment is used to receive the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT; During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered; And, when deciphering successfully, return decoding and successfully instruct.

In the embodiment of the invention, the coding transmission equipment of multi-link data flow cracking carries out digital fountain sign indicating number coding to original data packet; Different radio access technologies RAT carrying and transmission are transferred in packet behind the coding; And, stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet; The decoding transmission equipment receives the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT; During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered; And, when deciphering successfully, return decoding and successfully instruct; The cracking scheme need not channel condition information; Make the performance of data flow cracking scheme be totally independent of accuracy to channel estimating; Can better adapt to the characteristics that wireless channel becomes when dynamic, also need not the retransmission mechanism of complex design, save the expense of signaling; Have the good characteristics of robustness simultaneously, and can reach the higher effective transmission rate.

Description of drawings

Fig. 1 is the coding transmission process chart of multi-link data flow cracking in the embodiment of the invention;

Fig. 2 is the decoding transmission process flow chart of multi-link data flow cracking in the embodiment of the invention;

Fig. 3 is the enforcement sketch map of cracking scheme in the embodiment of the invention;

Fig. 4 is the structural representation of the coding transmission equipment of multi-link data flow cracking in the embodiment of the invention;

Fig. 5, Fig. 6 are the structural representation of the decoding transmission equipment of multi-link data flow cracking in the embodiment of the invention;

Fig. 7 is the structural representation of multi-link data flow cracking treatment system in the embodiment of the invention.

Embodiment

For solving the deficiency that prior art exists, the embodiment of the invention is introduced digital fountain sign indicating number the cracking solution of multi-link data flow.

Numeral fountain sign indicating number; After being meant that original data packet is passed through coding; Can generate the packet behind the coding of any amount; And the receiving terminal of data only need receive the packet behind the coding of some (be slightly larger than coding before number of data packets), and just very high probability successfully translates original data packet.As long as this cataloged procedure is just as the fountain (encoder) that produces water droplet (packet behind the coding) continually, and with the water droplet of cup (decoder) reception sufficient amount, can reach the purpose of drinking (decoding success).Just because of this, this kind coding is called as digital fountain sign indicating number.Numeral fountain sign indicating number is proposed by people such as M.Luby, and more typical at present fountain sign indicating number has LT sign indicating number, system Raptor sign indicating number etc.

As shown in Figure 1, in the embodiment of the invention, the coding transmission handling process of multi-link data flow cracking is following:

Step 11, original data packet is carried out digital fountain sign indicating number coding.

Step 12, the packet after will encoding transfer to that different radio access technologies RAT carries and transmission.

Step 13, stop coding and transmission after the decoding of original data packet successfully instructed receiving to said original data packet.

Among the embodiment, can be sequentially from original data packet intercepting L data divide into groups to carry out digital fountain sign indicating number coding; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed; From original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding; The decoding of all data packets is successfully instructed in receiving original data packet, and original data stream all sends and finishes.

Among the embodiment; Packet after will encoding is behind serial to parallel conversion; Transfer to different RAT carryings and transmission in turn, stop output until encoder and (for example, exist 3 kinds of RAT to carry; Serial to parallel conversion is carried out in packet behind then per three codings one time, and 3 kinds of RAT carry and carry a packet behind the coding respectively).

As shown in Figure 2, in the embodiment of the invention, the decoding transmission process flow process of multi-link data flow cracking is following:

Step 21, the packet of reception behind digital fountain sign indicating number coding, said packet is carried and transmission by different radio access technologies RAT.

When step 22, the number of data packets before the number of data packets that receives is greater than coding, the packet that receives is deciphered.

Step 23, when deciphering successfully, return decoding and successfully instruct.

Among the embodiment, can carry out the laggard row decoding of parallel serial conversion in the packet on the different RAT that will receive.

Among the embodiment, can the packet that receive be saved to the decoding buffering area, during the number of data packets of follow-up number of data packets in the decoding buffering area before greater than coding, the packet in the paginal translation bitstream buffer is deciphered.

When decoding failure, the number of data packets of waiting to continue to receive is deciphered the packet that said continuation receives during once more greater than the number of data packets before the coding.

Fig. 3 is the enforcement sketch map of the cracking scheme of the embodiment of the invention, and is as shown in the figure, in the embodiment of the invention; Original data stream is adopted the packet that generates after the digital fountain sign indicating number encoding process behind the coding; Carry out serial to parallel conversion again and form many substream of data, different substream of data carries on different RAT, and receiving terminal can receive the packet after different RAT go up the coding that carries; After being accumulated to the packet behind the coding of some, decoding success goes out original data stream.

Lifting an instantiation explanation below utilizes digital fountain sign indicating number original data stream to be carried out the workflow of pretreated cracking scheme:

Adopt mould two to add computing with digital fountain sign indicating number in the present embodiment and be that example describes, can be LT sign indicating number, system Raptor sign indicating number, certainly, adopt the digital fountain sign indicating number of other formal operation also can implement by the inventive method.After having adopted mould two to add operation coding; The partial information of original data packet has all been carried in packet after making each encode; Therefore; After as long as receiving terminal receives packet behind the coding of some (do not require the packet behind the coding from which bar RAT is transmitted, also do not require the sequencing that the packet behind these codings produces), just might reduce original data packet through separating method that mould two adds linear equation group; Thereby remove dependence, avoid the application of retransmission mechanism channel.

Suppose that multimode terminal MT is in the middle of the heterogeneous network, need download 10000 original data packet from certain server.Exist this moment 2 RAT to supply MT to use.

1,10000 original data packet are carried out LT sign indicating number coding, cataloged procedure is following:

(1), selects coding degree d according to probability-distribution function ρ (d) _n:

$\mathrm{\ρ}\left(d\right)=\frac{\mathrm{\μ}\left(d\right)+\mathrm{\τ}\left(d\right)}{Z}---\left(4\right)$

$\mathrm{\μ}\left(d\right)=\left\{\begin{array}{cc}1/K& \mathrm{for\; d}=1\\ 1/d(d-1)& \mathrm{for\; d}=\mathrm{2,3},...,K\end{array}\right.---\left(5\right)$

$\mathrm{\τ}\left(d\right)=\left\{\begin{array}{cc}\frac{s}{K}\·\frac{1}{d}& \mathrm{for\; d}=\mathrm{1,2},...,(K/S-1)\\ \frac{s}{K}\log (S/\mathrm{\δ})& \mathrm{for\; d}=K/S\\ 0& \mathrm{for\; d}>K/S\end{array}\right.---\left(6\right)$

Wherein:

K＝10000

S＝244

δ＝0.05

Z＝1.3

Above data are the settings of typical LT code parameters, are not described in detail at this about the details of digital fountain sign indicating number, and those of ordinary skills can learn with reference to correlated digital fountain sign indicating number document.

(2), in 10000 data are divided into groups at random equiprobability choose d _nIndividual data are divided into groups, and carry out mould two and add computing, the packet after obtaining encoding.

2, with being carried on the 2RAT behind the packet serial to parallel conversion behind per 2 codings.

3, the data packet transmission behind the coding that will assign to of different RAT is given MT.

4, the packet of MT behind the coding that receives was greater than 10000 o'clock, and the beginning trial and error decoding becomes mould two to add linear equation group the packet simultaneous behind the coding that receives, and acquires original data packet through the solving equation group.If decoding failure, then continue the packet behind the received code and send into decoder, the packet behind the coding to be received greater than 10000 o'clock, restarts trial and error decoding once more, correctly translates until 10000 groupings.

Based on same inventive concept, the embodiment of the invention also provides a kind of coding transmission equipment of multi-link data flow cracking, and its structure is as shown in Figure 4, can comprise: coding module 41 is used for original data packet is carried out digital fountain sign indicating number coding; Transmission bearer module 42 is transferred to different radio access technologies RAT carrying and transmission with the packet behind the coding; Control module 43 stops coding and the transmission to said original data packet after the decoding of said original data packet successfully instructed receiving.

Among the embodiment, coding module 41 can comprise: the segment encoding unit is used for dividing into groups to carry out digital fountain sign indicating number coding from L data of original data packet intercepting sequentially; At this moment; Control module 43 can comprise: the segment encoding control unit; Be used for after receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed; Control said segment encoding unit and from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding, the decoding of all data packets is successfully instructed in receiving original data packet.

Based on same inventive concept; The embodiment of the invention also provides a kind of decoding transmission equipment of multi-link data flow cracking; Its structure is as shown in Figure 5; Can comprise: receiver module 51, be used to receive the packet behind digital fountain sign indicating number coding, said packet is carried and transmission by different radio access technologies RAT; Decoding module 52 when being used for the number of data packets before the number of data packets that receives is greater than coding, is deciphered the packet that receives; Sending module 53 is used for when deciphering successfully, returning decoding and successfully instructing.

As shown in Figure 6, among the embodiment, equipment shown in Figure 5 can also comprise: cache module 54 is used for the packet that buffer memory receives; At this moment, when decoding module 52 can also be used for the number of data packets before the number of data packets of deciphering buffering area is greater than coding, the packet in the paginal translation bitstream buffer was deciphered.

Among the embodiment, decoding module 52 can also be used for when decoding failure, when treating that number of data packets that said receiver module continues to receive is once more greater than the number of data packets before the coding, the packet that said continuation receives is deciphered.

Based on same inventive concept, the embodiment of the invention also provides a kind of multi-link data flow cracking treatment system, and its structure is as shown in Figure 7, comprising:

Coding transmission equipment 71 is used for original data packet is carried out digital fountain sign indicating number coding; Different radio access technologies RAT carrying and transmission are transferred in packet behind the coding; And, stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet;

Decoding transmission equipment 72 is used to receive the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT; During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered; And, when deciphering successfully, return decoding and successfully instruct.

Embodiment of the invention scheme is compared with available data stream cracking scheme, possesses following beneficial effect:

One, do not need channel condition information.In the embodiment of the invention, transmitting terminal only need be known has to get final product for it provides service, to need not to pay close attention to the transmission conditions on these RAT, i.e. the channel condition information of these links for how many RAT.So not only saved the expense of signaling, what is more important makes the performance of data flow cracking scheme be totally independent of the accuracy to channel estimating, thereby can better adapt to the characteristics that wireless channel becomes when dynamic.And present existing data flow cracking scheme in order to reach higher transmission rate, needs to grasp the transmission conditions of different RAT, and because the dynamic time variation of link, also need frequently adjust the performance of the scheme that could guarantee.

Two, need not design retransmission mechanism.Based on the characteristics of digital fountain sign indicating number, the embodiment of the invention need not carried out the design of retransmission mechanism, and transmitting terminal can send the packet behind the coding endlessly, deciphers successfully until receiving terminal, only need return a decoding this moment and successfully instruct and get final product.So both remove complicated retransmission mechanism from, also saved the expense of part signaling.

Three, signaling consumption is little.The embodiment of the invention has all been saved a large amount of signaling consumptions on RAT transmission conditions and retransmission mechanism, not only practiced thrift resource, but also has reduced processing delay.

Four, robustness is good.Because the dynamic characteristic of Radio Link is in multi-link terminal and when carrying out the same business of multi-link service, can loses some connection probably.At this moment, existing data flow cracking scheme will lose efficacy, and can only distribute again, greatly reduce efficient.Embodiment of the invention scheme then can continue transmission, need not be configured again, and operating efficiency is higher, has shown good robustness.

Five, effective transmission speed is high.The data flow cracking scheme of the embodiment of the invention is except that having excellent adaptability, robustness, less signaling consumption and save the re-transmission, the flank speed that its transmission rate can reach in the time of also can reaching in the existing scheme initial data directly shunted.

Effective transmission speed in the face of embodiment of the invention scheme and existing scheme compares analysis down:

At first define effective transmission speed E:

E＝L/T (1)

Wherein, L representes the original packet number that transmitting terminal will send, and T representes L original packet successfully transferred to the used time of receiving terminal.

Describe for convenient, embodiment of the invention scheme is called scheme 1, with in the existing scheme scheme of the direct cracking of original data packet being called scheme 2.

Supposing to need L grouping needs transmission, exists two RAT can carry this L grouping.Wherein, the packet transmission rate of RAT a is respectively Ra and Pa with the correct arrival probability that divides into groups; The packet transmission rate of RAT b is respectively Rb and Pb with the correct arrival probability that divides into groups.Suppose that the grouping ratio that splits in the scheme 2 on a and the b is α: 1-α, wherein 0＜α＜1.

For scheme 1:

Receive in order to guarantee that L grouping can be received to rectify really, need two RAT gangs are considered that can obtain, this moment of grouping on the whole successfully arrives probability and is

And whole transmission rate is (R _a+ R _b).Therefore can obtain effective transmission speed E1 is:

E ₁＝(R _aP _a+R _bP _b) (2)

For scheme 2:

Owing to original packet is directly carried out cracking, therefore can divide two links to discuss separately:

For RAT a, successfully transmit α L and be grouped into that receive end to need the packet count of transmission be that

time then is

For RAT b, successfully (1-α) L of transmission is grouped into the receipts end needs the packet count of transmission to do $\frac{(1-\mathrm{\α})L}{P_2},$ Time then is $\frac{(1-\mathrm{\α})L}{R_2{P}_2}.$

Then the finish time T 2 of cost of L transmitted in packets should be:

$T_2=\max [\frac{\mathrm{\αL}}{R_1{P}_1},\frac{(1-\mathrm{\α})L}{R_2{P}_2}]---\left(3\right)$

Efficiency of transmission E2 is:

$E_2=\frac{L}{T_2}---\left(4\right)$

For the efficiency of transmission with scheme 1 compares, the maximum transmitted efficient of getting here in the scheme 2 compares.Based on (4) formula, can get maximum efficiency of transmission and be:

(E ₂) _max＝R _aP _a+R _bP _b (5)

scheme 2 pairing division ratios when promptly obtaining maximum transmitted efficient at this moment.Can find that embodiment of the invention scheme of designing can also reach the maximum transmission rate in the initial data stream cracking scheme except the advantage that has adaptability, robustness, re-transmission design and signaling consumption aspect.Certainly; Owing to increase to some extent through digital fountain sign indicating number coding back packet count; Therefore need the packet count of transmission to increase to some extent (general increasing degree is about 2%), but because become characteristics during wireless channel, transmission rate and success rate can't accurately obtain and remain unchanged; So application scheme 2 can't reach this theoretic maximum effective transmission speed in the reality, the scheme that the embodiment of the invention proposes then can reach.

In the embodiment of the invention, comparing with existing scheme based on the multi-link data flow cracking scheme of digital fountain sign indicating number has very big advantage, and these advantages are through preliminary treatment brings to original data stream, and the complexity of this processing is very low; In addition, the coding and decoding complexity of digital fountain sign indicating number is the very low coding techniques of computational complexity along with the code length linear change, is easy to realize that therefore, being simple and easy to property of the present invention possesses very strong practicality.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (11)

1. the coding and transmission method of a multi-link data flow cracking is characterized in that, this method comprises:

Intercepting L data divide into groups to carry out digital fountain sign indicating number coding from original data packet sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding;

L data after at every turn encoding are divided into groups to transfer to different radio access technologies RAT carrying and transmission;

Stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet.

2. the method for claim 1 is characterized in that, different RAT carryings are transferred in L data grouping after said will at every turn the coding and transmission comprises:

L data after at every turn encoding are divided into groups behind serial to parallel conversion, transfer to different RAT carryings and transmission in turn.

3. the decoding transmission method of a multi-link data flow cracking is characterized in that, this method comprises:

The packet of reception behind digital fountain sign indicating number coding, said packet is carried and transmission by different radio access technologies RAT;

During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered;

When deciphering successfully, return decoding and successfully instruct.

4. method as claimed in claim 3 is characterized in that, this method further comprises:

The packet that receives is saved to the decoding buffering area;

During said number of data packets before the number of data packets that receives is greater than coding; The packet that receives deciphered be meant: during the number of data packets of the number of data packets in the decoding buffering area before greater than coding, the packet in the paginal translation bitstream buffer is deciphered.

5. method as claimed in claim 3 is characterized in that, this method further comprises:

When decoding failure, the number of data packets of waiting to continue to receive is deciphered the packet that said continuation receives during once more greater than the number of data packets before the coding.

6. method as claimed in claim 3 is characterized in that, the packet that receives is carried out carrying out said decoding behind the parallel serial conversion.

7. the coding transmission equipment of a multi-link data flow cracking is characterized in that, comprising:

Coding module; Be used for dividing into groups to carry out digital fountain sign indicating number coding from L data of original data packet intercepting sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding;

The transmission bearer module is used for L data behind each coding are divided into groups to transfer to different radio access technologies RAT carrying and transmission;

Control module is used for stopping coding and the transmission to said original data packet after the decoding of said original data packet successfully instructed receiving.

8. the decoding transmission equipment of a multi-link data flow cracking is characterized in that, comprising:

Receiver module is used to receive the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT;

Decoding module when being used for the number of data packets before the number of data packets that receives is greater than coding, is deciphered the packet that receives;

Sending module is used for when deciphering successfully, returning decoding and successfully instructing.

9. equipment as claimed in claim 8 is characterized in that, also comprises:

Cache module is used for the packet that buffer memory receives;

When said decoding module was further used for the number of data packets before the number of data packets of decoding in the buffering area is greater than coding, the packet in the paginal translation bitstream buffer was deciphered.

10. equipment as claimed in claim 8; It is characterized in that; Said decoding module is further used for when decoding failure, when treating that number of data packets that said receiver module continues to receive is once more greater than the number of data packets before the coding, the packet that said continuation receives is deciphered.

11. a multi-link data flow cracking treatment system is characterized in that, comprising:

Coding transmission equipment; Be used for dividing into groups to carry out digital fountain sign indicating number coding from L data of original data packet intercepting sequentially; After receiving that the decoding that L data of said intercepting are divided into groups is successfully instructed, from original data packet, choose L data sequentially again and divide into groups to carry out digital fountain sign indicating number coding; L data after at every turn encoding are divided into groups to transfer to different radio access technologies RAT carrying and transmission; And, stop coding and transmission after the decoding of said original data packet successfully instructed receiving to said original data packet;

The decoding transmission equipment is used to receive the packet behind digital fountain sign indicating number coding, and said packet is carried and transmission by different radio access technologies RAT; During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered; And, when deciphering successfully, return decoding and successfully instruct.

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