CN102315915A - Method and device for constructing status report - Google Patents
Method and device for constructing status report Download PDFInfo
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- CN102315915A CN102315915A CN2010102214435A CN201010221443A CN102315915A CN 102315915 A CN102315915 A CN 102315915A CN 2010102214435 A CN2010102214435 A CN 2010102214435A CN 201010221443 A CN201010221443 A CN 201010221443A CN 102315915 A CN102315915 A CN 102315915A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1628—List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers
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Abstract
The invention provides a method and a device for constructing a status report. The method comprises the following steps of: if received protocol data units (PDU) are analyzed to have polling zone bits or a local rearrangement timer is overtime, acquiring minimum serial numbers and maximum serial numbers of the PDUs which are not completely received; and if the quantity of the PDUs which are not completely received between the minimum serial numbers and the maximum serial numbers of the PDUs which are not completely received is determined to be more than a predetermined quantity, acquiring the unacknowledged response information of the PDUs which are not completely received with the predetermined quantity between the minimum serial numbers and the maximum serial numbers of the PDUs which are not completely received, wherein the unacknowledged response information is used for constructing the status report. The invention has the advantages that: the defect of the construction process of the status report of a radio link control (RLC) layer in the conventional long term evolution (LTE) system is overcome, and the construction efficiency of the status report of the RLC layer is improved, so the bandwidth of a radio link is saved.
Description
Technical field
The present invention relates to wireless communication field, especially relate to the structural regime method of reporting and the device of wireless chain control layer protocol entity in LTE (Long Term Evolution, the Long Term Evolution) system.
Background technology
RLC (Radio Link Control; Radio Link control) protocol layer is arranged in LTE Radio interface protocols stack PDCP (Packet Data Convergence Protocol; PDCP) under the layer; On MAC (Media Access Control, the medium access control) layer, be a sub-layer of layer 2.Rlc layer is that user service data and control data provide segmentation and retransmission service.The function of RLC sublayer comprises link control, transmits the PDU (Protocol Data Unit, protocol Data Unit) on upper strata (RRC/PDCP), reorganization, segmentation, segmentation and cascade again; Deliver PDU to the upper strata according to the order of sequence, ARQ (Automatic Repeat-reQuest, repeat requests automatically) error correction; Repeatability detects; Flow control, protocol error detect and repair, RLC reconstruction etc.The function of RLC sublayer is realized by the RLC entity; Each RLC entity can be by RRC (Radio Resource Control; Radio Resource control) being configured to three kinds of patterns is used to carry out transfer of data: transparent mode (Transparent Mode; Abbreviation TM), Unacknowledged Mode (Unacknowledged Mode is called for short UM) and affirmation mode (Acknowledged Mode is called for short AM).ARQ in the affirmation mode retransmits; Be to transmitting terminal status report (Status Report) through receiving terminal; Transmitting terminal judges that according to the ACK_SN in the status report (AcknowledgementSequence Number, confirm response sequence number), NACK_SN (Negative AcknowledgementSequence Number, response sequence unconfirmed number) which PDU has been received end and has acknowledged receipt of; Which PDU or PDU fragment need to retransmit, thereby guarantee reliability of data transmission.
In the prior art, status report need be constructed according to protocol parameter VR (R) and VR (MS) at the RLC receiver side, but compares under the serious situation at packet loss; May exist a lot of PDU not receive between VR (R) and the VR (MS), in this case, report through VR (R) and VR (MS) protocol parameter structural regime according to prior art; Can make the very big of status report, after the RLC transmitter side is received status report, Nack (response unconfirmed) information in the treatment state report; Assembling retransmits PDU; But, when maybe the Nack information in status report also not finishing dealing with, trigger the receiver side status report again because Nack information is too many; Receiver side is in status report; Also can repeat to send to the corresponding also unreceived Nack of PDU of Nack information in the last state report, like this can be when channel quality be poor, a lot of up bandwidth of waste.
Summary of the invention
The technical problem that the present invention will solve provides a kind of structural regime method of reporting and device, to save data transfer bandwidth.
In order to solve the problems of the technologies described above, the invention provides a kind of structural regime method of reporting, be applied to the wireless chain control layer protocol entity, comprising:
Have the poll flag bit if resolve the protocol Data Unit (PDU) receive, perhaps locally reset regularly overtimely, then obtain minmal sequence number and the maximum sequence number of the PDU that does not receive fully;
If the number of judging the PDU that does not receive fully between maximum sequence number and the minmal sequence number of the said PDU that does not receive fully is greater than predetermined number; Then between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report.
Further; Said method also has following characteristics: obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully between said minmal sequence at the said PDU that does not receive fully number and the maximum sequence number, the step that is used for the structural regime report comprises:
Number obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully in order from the minmal sequence of the said PDU that does not receive fully.
Further; Said method also has following characteristics: the response message unconfirmed of obtaining the PDU that said predetermined number do not receive fully between said minmal sequence at the said PDU that does not receive fully number and the maximum sequence number; Be used for the step of structural regime report, also comprise:
The sequence number of next PDU that obtains maximum sequence number corresponding among the PDU that said predetermined number do not receive fully is used for the structural regime report as confirming response message.
Further, said method also has following characteristics: the said PDU that does not receive fully is: the PDU that unreceived PDU or part are received.
Further, said method also has following characteristics:
If the said PDU that does not receive fully is unreceived PDU, then said response message unconfirmed is the corresponding sequence number of this unreceived PDU;
If the PDU that the said PDU that does not receive fully receives for part, sequence number and mark that the PDU that then said response message unconfirmed is received for this part is corresponding are not received the original position of part and the information of end position.
In order to address the above problem, the present invention also provides a kind of device of structural regime report, is applied to the wireless chain control layer protocol entity, comprising:
Acquisition module is used for having the poll flag bit if resolve the protocol Data Unit (PDU) receive, perhaps locally resets regularly overtimely, then obtains minmal sequence number and the maximum sequence number of the PDU that does not receive fully;
Judge module is connected with said acquisition module, be used for if the number of judging the PDU that does not receive fully between maximum sequence number and the minmal sequence number of the said PDU that does not receive fully greater than predetermined number, message informing constructing module then;
Constructing module; Be connected with said judge module; After being used to receive notice, between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report.
Further, said apparatus also has following characteristics:
Said constructing module specifically is used for number obtaining in order from the minmal sequence of the said PDU that does not receive fully the response message unconfirmed of the PDU that said predetermined number do not receive fully.
Further, said apparatus also has following characteristics:
Said constructing module; After the response message unconfirmed of obtaining the PDU that said predetermined number do not receive fully, also be used for; The sequence number of the next PDU of corresponding maximum sequence number is used for the structural regime report as confirming response message in obtaining the PDU that said predetermined number do not receive fully.
Further, said apparatus also has following characteristics:
The said PDU that does not receive fully is: the PDU that unreceived PDU or part are received,
If the said PDU that does not receive fully is unreceived PDU, then said response message unconfirmed is the corresponding sequence number of this unreceived PDU;
If the PDU that the said PDU that does not receive fully receives for part, sequence number and mark that the PDU that then said response message unconfirmed is received for this part is corresponding are not received the original position of part and the information of end position.
The present invention provides a kind of structural regime method of reporting and device, has solved in the LTE existing system in the rlc layer status report construction process not enoughly, improves the efficient that the RLC status report is enough made, thereby saves the bandwidth of Radio Link.The present invention has compared following advantage with existing status report building method: 1) save data transfer bandwidth; 2) reduced the Nack information in the status report repeat send; 3) because in status report, reduced Nack information, so reduced the complexity of RLC transmitter side parse state report; 4) reduced the complexity that RLC receiver side structural regime is reported.
Description of drawings
Fig. 1 is the schematic representation of apparatus of the structural regime report of the embodiment of the invention;
Fig. 2 is the flow chart of the structural regime method of reporting of the embodiment of the invention;
Fig. 3 is the flow chart of the applying examples of structural regime method of reporting of the present invention.
Embodiment
In order to understand the present invention better, the present invention is done to describe further below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is the schematic representation of apparatus of the structural regime report of the embodiment of the invention, and the device of the status report structure of present embodiment is applied to the rlc protocol entity, and is as shown in Figure 1, can comprise: acquisition module, judge module and constructing module.Wherein,
Acquisition module is used for having the predetermined flag position if resolve the PDU receive, and is perhaps local regularly overtime, then obtains minmal sequence number and the maximum sequence number of the PDU that does not receive fully;
Judge module is connected with said acquisition module, be used for if the number of judging the PDU that does not receive fully between maximum sequence number and the minmal sequence number of the said PDU that does not receive fully greater than predetermined number, message informing constructing module then;
Constructing module; Be connected with said judge module; After being used to receive notice, between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report.
Particularly; Constructing module number obtains the response message unconfirmed of the PDU that said predetermined number do not receive fully in order from the minmal sequence of the said PDU that does not receive fully; And can be further; The sequence number of the next PDU of corresponding maximum sequence number is used for the structural regime report as confirming response message in obtaining the PDU that said predetermined number do not receive fully.
Wherein, the said PDU that does not receive fully can comprise: unreceived PDU and the PDU that receives of part, if the said PDU that does not receive fully is unreceived PDU, then constructing module obtains the corresponding sequence number of this unreceived PDU and comes the structural regime report; If the said PDU that does not receive fully is the PDU that receives of part, then constructing module obtains the corresponding sequence number of PDU that this part receives and mark and does not receive that the original position of part and the information of end position comes structural regime report.
Fig. 2 is the flow chart of method of the status report structure of the embodiment of the invention, and as shown in the figure, the method for present embodiment comprises following step:
Whether the PDU that S10, parsing receive has the poll flag bit; Judge perhaps whether this locality rearrangement is regularly overtime, if PDU has the poll flag bit, perhaps local rearrangement timing is overtime; Then turn to step S20; If PDU not belt wheel askes flag bit and local regularly not overtime, then receive PDU, repeating step S10 always.
For example, the RLC receiver side is received the PDU of the band Poling position that send the opposite end, and the Polling flag bit of promptly resolving among the PDU is 1, will trigger the report of RLC receiver side structural regime.
The RLC receiving terminal will sort to PDU after receiving the PDU of some, according to the order of sequence PDU will be delivered to the upper strata, when local terminal t-Reordering timer expiry, with triggering the RLC receiving terminal PDU that does not receive carried out the status report structure.
S20, the minmal sequence number that obtains the PDU that does not receive fully and maximum sequence number;
Particularly, the RLC receiver side obtains the protocol parameter VR (R) and the VR (MS) of local terminal.
VR (R) records the minmal sequence number of the PDU that does not receive fully, and VR (MS) records the maximum sequence number of the PDU that does not receive fully.
If whether the number of the PDU that does not receive fully between S30, the maximum sequence number of judging the said PDU that does not receive fully and the minmal sequence number greater than predetermined number, then changes step S40 greater than predetermined number, if be less than or equal to predetermined number, then changes step S50 over to;
Particularly, the RLC receiver side calculates the number NACK_NUM of the PDU that does not receive fully between VR (R) and the VR (MS).
The RLC receiver side is judged the nack message number maximum NACK_MAX whether NACK_NUM allows greater than each status report.
S40, between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report, turn to step S60 then.
Particularly, the RLC receiver side obtains NACK_MAX Nack information between VR (R) and VR (MS), and the SN of the next PDU of corresponding maximum sequence number comes the structural regime report as AckSn among the PDU that this NACK_MAX is not received fully.Wherein, AckSn is illustrated in the status report, and except the PDU of NackSn indication, the PDU before the AckSn is received.
Among the step S40, the RLC receiver side can obtain the response message unconfirmed of the minimum NACK_MAX of a sequence number PDU that does not receive fully particularly, comes the structural regime report.
For example, obtain the response message unconfirmed of NACK_MAX PDU that does not receive fully in order from VR (R) beginning.
Only need Sn number of this PDU as NackSn for the PDU that does not receive fully; Need NackSn and do not receive that original position (Sostart) and end position (SoEnd) partly construct Nack information for the PDU that receives of part.
S50, all response messages unconfirmed between the minmal sequence of the said PDU that does not receive fully number and the maximum sequence number are used for the structural regime report, turn to step S60 then.
Particularly, the RLC receiver side is all the Nack information structuring status reports between VR (R) and the VR (MS), and the next sequence number of VR (MS) recorded sequences number is come the structural regime report as AckSn (confirm response sequence number).
S60, status report.
As an example the present invention is made further detailed description with the status report structure of wireless chain control layer in the LTE system below.
It is following that scene at first is set:
The transmitter side of rlc layer has sent the receiver side of 200 PDU to rlc layer, is designated as PDU_1 to PDU_200, and the sequence number of PDU is 1-200.
The rlc layer receiver side is because middle certain section time link problem has only been received last bag PDU_200.Receiver side VR (MS) protocol parameter at this moment is updated to 201.Suppose that PDU_0 does not receive, so protocol parameter VR (R) is 0.
The number that the backstage has disposed maximum nack message is 20.
As shown in Figure 3, the concrete steps of the data retransmission structure of rlc layer are following:
S100, RLC receiver side are received PDU, and the Polling flag bit of resolving among the PDU is 1, the timer expiry of perhaps retaking.
It is 0 that S101, RLC receiver side get access to protocol parameter VR (R), and VR (MS) is 201.
Unreceived PDU number for example is 199 between S102, RLC receiver side calculating VR (R) and the VR (MS).
S103, RLC receiver side are judged the NACK number 20 of the maximum that allows in the status report of unreceived PDU number 199 greater than the backstage configuration.
S104, rlc layer receiver side obtain the nack message structural regime report of 20 unreceived PDU (1-20) of SN minimum, and with SN (21) as ACK_SN, the structural regime report.
S105, rlc layer receiver side status report arrive the transmitter side of rlc layer.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
More than be merely the preferred embodiments of the present invention; Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. a structural regime method of reporting is applied to the wireless chain control layer protocol entity, comprising:
Have the poll flag bit if resolve the protocol Data Unit (PDU) receive, perhaps locally reset regularly overtimely, then obtain minmal sequence number and the maximum sequence number of the PDU that does not receive fully;
If the number of judging the PDU that does not receive fully between maximum sequence number and the minmal sequence number of the said PDU that does not receive fully is greater than predetermined number; Then between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report.
2. the method for claim 1; It is characterized in that: obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully between said minmal sequence at the said PDU that does not receive fully number and the maximum sequence number, the step that is used for the structural regime report comprises:
Number obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully in order from the minmal sequence of the said PDU that does not receive fully.
3. method as claimed in claim 2; It is characterized in that: the response message unconfirmed of obtaining the PDU that said predetermined number do not receive fully between said minmal sequence at the said PDU that does not receive fully number and the maximum sequence number; Be used for the step of structural regime report, also comprise:
The sequence number of next PDU that obtains maximum sequence number corresponding among the PDU that said predetermined number do not receive fully is used for the structural regime report as confirming response message.
4. like each described method of claim 1-3, it is characterized in that:
The said PDU that does not receive fully is: the PDU that unreceived PDU or part are received.
5. method as claimed in claim 4 is characterized in that:
If the said PDU that does not receive fully is unreceived PDU, then said response message unconfirmed is the corresponding sequence number of this unreceived PDU;
If the PDU that the said PDU that does not receive fully receives for part, sequence number and mark that the PDU that then said response message unconfirmed is received for this part is corresponding are not received the original position of part and the information of end position.
6. the device of a structural regime report is applied to the wireless chain control layer protocol entity, it is characterized in that, comprising:
Acquisition module is used for having the poll flag bit if resolve the protocol Data Unit (PDU) receive, perhaps locally resets regularly overtimely, then obtains minmal sequence number and the maximum sequence number of the PDU that does not receive fully;
Judge module is connected with said acquisition module, be used for if the number of judging the PDU that does not receive fully between maximum sequence number and the minmal sequence number of the said PDU that does not receive fully greater than predetermined number, message informing constructing module then;
Constructing module; Be connected with said judge module; After being used to receive notice, between the minmal sequence of the said PDU that does not receive fully number and maximum sequence number, obtain the response message unconfirmed of the PDU that said predetermined number do not receive fully, be used for the structural regime report.
7. device as claimed in claim 6 is characterized in that:
Said constructing module specifically is used for number obtaining in order from the minmal sequence of the said PDU that does not receive fully the response message unconfirmed of the PDU that said predetermined number do not receive fully.
8. device as claimed in claim 7 is characterized in that:
Said constructing module; After the response message unconfirmed of obtaining the PDU that said predetermined number do not receive fully, also be used for; The sequence number of the next PDU of corresponding maximum sequence number is used for the structural regime report as confirming response message in obtaining the PDU that said predetermined number do not receive fully.
9. like each described device of claim 6-8, it is characterized in that:
The said PDU that does not receive fully is: the PDU that unreceived PDU or part are received,
If the said PDU that does not receive fully is unreceived PDU, then said response message unconfirmed is the corresponding sequence number of this unreceived PDU;
If the PDU that the said PDU that does not receive fully receives for part, sequence number and mark that the PDU that then said response message unconfirmed is received for this part is corresponding are not received the original position of part and the information of end position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102214435A CN102315915A (en) | 2010-07-01 | 2010-07-01 | Method and device for constructing status report |
| PCT/CN2011/070530 WO2012000312A1 (en) | 2010-07-01 | 2011-01-24 | Method and device for constructing status report |
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| CN2010102214435A CN102315915A (en) | 2010-07-01 | 2010-07-01 | Method and device for constructing status report |
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| CN2010102214435A Pending CN102315915A (en) | 2010-07-01 | 2010-07-01 | Method and device for constructing status report |
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| WO (1) | WO2012000312A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104067579A (en) * | 2013-01-18 | 2014-09-24 | 华为技术有限公司 | Data transmission method and device |
| CN107872842A (en) * | 2016-09-27 | 2018-04-03 | 中国移动通信有限公司研究院 | A kind of data receiver method and device |
| CN108809526A (en) * | 2017-05-05 | 2018-11-13 | 展讯通信（上海）有限公司 | Method for reporting status and device, storage medium, the user equipment of rlc layer |
| CN114339614A (en) * | 2020-09-29 | 2022-04-12 | 上海朗帛通信技术有限公司 | Method and equipment used for wireless communication |
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| CN103999394B (en) * | 2012-11-16 | 2017-05-10 | 华为技术有限公司 | Data retransmission and feedback methods, and corresponding apparatus |
| US10849160B2 (en) * | 2019-02-26 | 2020-11-24 | Nokia Technologies Oy | Reinstating poll retransmission timer |
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| CN101030839A (en) * | 2007-02-13 | 2007-09-05 | 华为技术有限公司 | Method for re-transmitting data |
| KR101518269B1 (en) * | 2008-02-01 | 2015-05-08 | 삼성전자주식회사 | Method and system for transmitting status report |
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| EP1424823A1 (en) * | 2002-11-26 | 2004-06-02 | ASUSTeK Computer Inc. | Processing unexpected transmission interruptions in a wireless communications system |
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| WO2009096743A2 (en) * | 2008-01-31 | 2009-08-06 | Lg Electronics Inc. | Method for sending status information in mobile telecommunications system and receiver of mobile telecommunications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104067579A (en) * | 2013-01-18 | 2014-09-24 | 华为技术有限公司 | Data transmission method and device |
| CN107872842A (en) * | 2016-09-27 | 2018-04-03 | 中国移动通信有限公司研究院 | A kind of data receiver method and device |
| CN107872842B (en) * | 2016-09-27 | 2021-01-15 | 中国移动通信有限公司研究院 | Data receiving method and device |
| CN108809526A (en) * | 2017-05-05 | 2018-11-13 | 展讯通信（上海）有限公司 | Method for reporting status and device, storage medium, the user equipment of rlc layer |
| CN108809526B (en) * | 2017-05-05 | 2020-11-27 | 展讯通信（上海）有限公司 | Status reporting method and device of RLC layer, storage medium and user equipment |
| CN114339614A (en) * | 2020-09-29 | 2022-04-12 | 上海朗帛通信技术有限公司 | Method and equipment used for wireless communication |
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| WO2012000312A1 (en) | 2012-01-05 |
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Application publication date: 20120111 |