CN101562498A - Encoding and decoding transmission method of multi-join data stream cracking as well as device and system thereof - Google Patents
Encoding and decoding transmission method of multi-join data stream cracking as well as device and system thereof Download PDFInfo
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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
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 AccessTechnology, RAT).These different wireless access technology own characteristics are not quite similar, as coverage, transmission bandwidth, propagation delay time, expense etc.Utilize the characteristics of these technology, the heterogeneous network that multiple wireless access technology merges is formed in the cooperation mutually 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 provide abundant more business experience for the user simultaneously.
In the middle of heterogeneous network, multimode terminal can communicate by multiple wireless access technology simultaneously, i.e. and realization " multi-link " (Multiple Radio Accesses, MRA).Terminal is supported samely when professional by 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 terminal by 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, 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 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.
Two, need retransmission mechanism.Present existing cracking scheme is for the correct reception that guarantees data flow all needs to 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 need retransmit or will send out ACK to transmitting terminal the grouping that correctly receives to sending wrong 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:
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;
After the successfully decoded instruction of receiving, stop coding and transmission to described original data packet to described 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, described packet is by different radio access technologies RAT carrying and transmission;
During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered;
When successfully decoded, return successfully decoded instruction.
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 is used for original data packet is carried out digital fountain sign indicating number coding;
The transmission bearer module is transferred to different radio access technologies RAT carrying and transmission with the packet behind the coding;
Control module stops coding and transmission to described original data packet after the successfully decoded instruction of receiving described original data packet.
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 described packet is by different radio access technologies RAT carrying and transmission;
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 successfully decoded, returns successfully decoded instruction.
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 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, after the successfully decoded instruction of receiving, stop coding and transmission to described original data packet to described original data packet;
The decoding transmission equipment is used to receive the packet behind digital fountain sign indicating number coding, and described packet is by different radio access technologies RAT carrying and transmission; 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 successfully decoded, return successfully decoded instruction.
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, after the successfully decoded instruction of receiving, stop coding and transmission to described original data packet to described original data packet; The decoding transmission equipment receives the packet behind digital fountain sign indicating number coding, and described packet is by different radio access technologies RAT carrying and transmission; 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 successfully decoded, return successfully decoded instruction; 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 to design complicated retransmission mechanism, saved 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 schematic diagram 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.This cataloged procedure uses cup (decoder) to receive the water droplet of sufficient amount just as the fountain (encoder) that produces water droplet (packet behind the coding) continually and need only, and 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 as follows:
Different radio access technologies RAT carrying and transmission are transferred in step 12, the packet after will encoding.
Among the embodiment, can from original data packet, intercept L data grouping sequentially and carry out digital fountain sign indicating number coding; After receiving the successfully decoded instruction that L data of described intercepting are divided into groups, from original data packet, choose L data grouping sequentially again and carry out digital fountain sign indicating number coding, the successfully decoded instruction of all data packets in receiving original data packet, original data stream all send and finish.
Among the embodiment, packet after will encoding is behind serial to parallel conversion, transfer to different RAT carryings and transmission in turn, (for example stop output until encoder, there are 3 kinds of RAT carryings, serial to parallel conversion is carried out in packet behind then per three codings one time, and a packet behind the coding is carried in 3 kinds of RAT carryings 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 as follows:
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.
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, the packet that receives can 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, when waiting the number of data packets that continues to receive, the packet that described continuation receives is deciphered once more greater than the number of data packets before the coding.
Fig. 3 is the enforcement schematic diagram of the cracking scheme of the embodiment of the invention, 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, as long as the packet that receiving terminal receives behind the coding of some (does not require the packet behind the coding from which bar RAT is transmitted, do not require the sequencing that the packet behind these codings produces yet) after, just might add the method reduction original data packet of linear equation group by separating mould two, 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 2 RAT to use for MT this moment.
1,10000 original data packet are carried out LT sign indicating number coding, cataloged procedure is as follows:
(1), selects coding degree d according to probability-distribution function ρ (d)
n:
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 the grouping of 10000 data at random equiprobability choose d
nIndividual data grouping is carried out mould two and is added computing, the packet after obtaining encoding.
2, will be 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 by 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 can comprise as shown in Figure 4: 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 transmission to described original data packet after the successfully decoded instruction of receiving described original data packet.
Among the embodiment, coding module 41 can comprise: the segment encoding unit is used for carrying out digital fountain sign indicating number coding from L data grouping of original data packet intercepting sequentially; At this moment, control module 43 can comprise: the segment encoding control unit, be used for after receiving the successfully decoded instruction that L data of described intercepting are divided into groups, controlling described segment encoding unit chooses the grouping of L data sequentially again and carries out digital fountain sign indicating number coding, the successfully decoded instruction of all data packets in receiving original data packet from 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 as shown in Figure 5, can comprise: receiver module 51, be used to receive the packet behind digital fountain sign indicating number coding, described packet is by different radio access technologies RAT carrying and transmission; 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 successfully decoded, returns successfully decoded instruction.
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, decoding module 52 can also be used for decoding buffering area number of data packets greater than the coding before number of data packets the time, the packet in the paginal translation bitstream buffer is deciphered.
Among the embodiment, decoding module 52 can also be used for when decoding failure, when treating that described receiver module continues the number of data packets that receives once more greater than the number of data packets before the coding, the packet that described 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 comprises as shown in Figure 7:
Decoding transmission equipment 72 is used to receive the packet behind digital fountain sign indicating number coding, and described packet is by different radio access technologies RAT carrying and transmission; 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 successfully decoded, return successfully decoded instruction.
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 needs frequently to adjust the performance of the scheme that could guarantee.
Two, do not need to design retransmission mechanism.According to the characteristics of digital fountain sign indicating number, the embodiment of the invention does not need to carry out the design of retransmission mechanism, and transmitting terminal can send the packet behind the coding endlessly, and is successfully decoded until receiving terminal, and only need return a successfully decoded instruction and get final product this moment.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 saved resource, but also has reduced processing delay.
Four, robustness is good.Because the dynamic characteristic of Radio Link is in multi-link terminal and can loses some connection probably when carrying out the same business of multi-link service.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 height.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 to embodiment of the invention scheme and existing scheme is analyzed below:
At first define effective transmission speed E:
E＝L/T (1)
Wherein, L represents the original packet number that transmitting terminal will send, and T represents L original packet successfully transferred to the used time of receiving terminal.
Describe for convenient, embodiment of the invention scheme is called scheme 1, will in the existing scheme scheme of the direct cracking of original data packet be 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 and the correct arrival of grouping probability are respectively Ra and Pa; The packet transmission rate of RAT b and the correct arrival of grouping probability are respectively Rb and Pb.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 the packet count that receiving end need transmit and be
Time then is
For RAT b, successfully transmission (1-α) L is grouped into the packet count that receiving end need transmit and is
Time then is
Then the finish time T 2 of cost of L transmitted in packets should be:
Efficiency of transmission E2 is:
For the efficiency of transmission with scheme 1 compares, the maximum transmitted efficient of getting here in the scheme 2 compares.According to (4) formula, can get maximum efficiency of transmission and be:
(E
2)
max＝R
aP
a+R
bP
b (5)
At this moment
Scheme 2 pairing division ratios when promptly obtaining maximum transmitted efficient.Can find that the scheme of embodiment of the invention design 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 become characteristics during because of 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 by 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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1, a kind of coding and transmission method of multi-link data flow cracking is characterized in that, this method comprises:
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;
After the successfully decoded instruction of receiving, stop coding and transmission to described original data packet to described original data packet.
2, the method for claim 1 is characterized in that, describedly original data packet is carried out digital fountain sign indicating number coding comprises:
Digital fountain sign indicating number coding is carried out in L data grouping of intercepting from original data packet sequentially;
After receiving the successfully decoded instruction that L data of described intercepting are divided into groups, from original data packet, choose L data grouping sequentially again and carry out digital fountain sign indicating number coding, the successfully decoded instruction of all data packets in receiving original data packet.
3, the method for claim 1 is characterized in that, different RAT carryings are transferred in the packet after described will the coding and transmission comprises:
Packet behind the coding behind serial to parallel conversion, is transferred to different RAT carryings and transmission in turn.
4, a kind of decoding transmission method of multi-link data flow cracking is characterized in that, this method comprises:
The packet of reception behind digital fountain sign indicating number coding, described packet is by different radio access technologies RAT carrying and transmission;
During number of data packets before the number of data packets that receives is greater than coding, the packet of reception is deciphered;
When successfully decoded, return successfully decoded instruction.
5, method as claimed in claim 4 is characterized in that, this method further comprises:
The packet that receives is saved to the decoding buffering area;
During described 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.
6, method as claimed in claim 4 is characterized in that, this method further comprises:
When decoding failure, when waiting the number of data packets that continues to receive, the packet that described continuation receives is deciphered once more greater than the number of data packets before the coding.
7, method as claimed in claim 4 is characterized in that, the packet that receives is carried out carrying out described decoding behind the parallel serial conversion.
8, a kind of coding transmission equipment of multi-link data flow cracking is characterized in that, comprising:
Coding module is used for original data packet is carried out digital fountain sign indicating number coding;
The transmission bearer module is transferred to different radio access technologies RAT carrying and transmission with the packet behind the coding;
Control module stops coding and transmission to described original data packet after the successfully decoded instruction of receiving described original data packet.
9, equipment as claimed in claim 8 is characterized in that, described coding module comprises:
The segment encoding unit is used for carrying out digital fountain sign indicating number coding from L data grouping of original data packet intercepting sequentially;
Described control module comprises:
The segment encoding control unit, be used for after receiving the successfully decoded instruction that L data of described intercepting are divided into groups, controlling described segment encoding unit chooses the grouping of L data sequentially again and carries out digital fountain sign indicating number coding, the successfully decoded instruction of all data packets in receiving original data packet from original data packet.
10, a kind of decoding transmission equipment of 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 described packet is by different radio access technologies RAT carrying and transmission;
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 successfully decoded, returns successfully decoded instruction.
11, equipment as claimed in claim 10 is characterized in that, also comprises:
Cache module is used for the packet that buffer memory receives;
When described decoding module was further used for 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.
12, equipment as claimed in claim 10, it is characterized in that, described decoding module is further used for when decoding failure, when treating that described receiver module continues the number of data packets that receives once more greater than the number of data packets before the coding, the packet that described continuation receives is deciphered.
13, a kind of multi-link data flow cracking treatment system is characterized in that, comprising:
Coding transmission equipment 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, after the successfully decoded instruction of receiving, stop coding and transmission to described original data packet to described original data packet;
The decoding transmission equipment is used to receive the packet behind digital fountain sign indicating number coding, and described packet is by different radio access technologies RAT carrying and transmission; 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 successfully decoded, return successfully decoded instruction.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016015222A1 (en) * | 2014-07-29 | 2016-02-04 | 华为技术有限公司 | Data encryption and transmission method and device |
| CN110535562A (en) * | 2019-08-22 | 2019-12-03 | 青海师范大学 | A kind of filtering type dimensionality reduction interpretation method |
| JP2020526944A (en) * | 2017-06-30 | 2020-08-31 | インテル コーポレイション | V2X communication using multiple wireless access technologies (multi-RAT) |
| WO2021142773A1 (en) * | 2020-01-17 | 2021-07-22 | Qualcomm Incorporated | An efficient scheme for fountain codes over multiple radio access technologies |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090306A (en) * | 2006-06-12 | 2007-12-19 | 中兴通讯股份有限公司 | Code and decode multiple method in service channel |
-
2008
- 2008-04-18 CN CN2008101044482A patent/CN101562498B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016015222A1 (en) * | 2014-07-29 | 2016-02-04 | 华为技术有限公司 | Data encryption and transmission method and device |
| JP2020526944A (en) * | 2017-06-30 | 2020-08-31 | インテル コーポレイション | V2X communication using multiple wireless access technologies (multi-RAT) |
| JP7286549B2 (en) | 2017-06-30 | 2023-06-05 | インテル コーポレイション | V2X communication using multiple radio access technologies (multi-RAT) |
| CN110535562A (en) * | 2019-08-22 | 2019-12-03 | 青海师范大学 | A kind of filtering type dimensionality reduction interpretation method |
| WO2021142773A1 (en) * | 2020-01-17 | 2021-07-22 | Qualcomm Incorporated | An efficient scheme for fountain codes over multiple radio access technologies |
| WO2021142923A1 (en) * | 2020-01-17 | 2021-07-22 | Qualcomm Incorporated | An efficient scheme for fountain codes over multiple radio access technologies |
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| CN101562498B (en) | 2012-04-25 |
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