CN102104457A - Method for indicating uplink hybrid automatic repeat request information, mobile terminal and base station - Google Patents
Method for indicating uplink hybrid automatic repeat request information, mobile terminal and base stationDownload PDFInfo
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- CN102104457A CN102104457ACN2009102615103ACN200910261510ACN102104457ACN 102104457 ACN102104457 ACN 102104457ACN 2009102615103 ACN2009102615103 ACN 2009102615103ACN 200910261510 ACN200910261510 ACN 200910261510ACN 102104457 ACN102104457 ACN 102104457A
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- hybrid automatic
- portable terminal
- automatic repeat
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- base station
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of LTE (Long Term Evolution, Long Term Evolution) method, portable terminal and the base station of the indication of ascending HARQ (Hybrid Aotumatic Repeat Request mixes automatic repeat requests) information in the system.
Background technology
According to retransmitting difference constantly taking place, HARQ can be able to be divided into synchronously and asynchronous two classes in the LTE system.Wherein synchronous HARQ since receiving terminal in advance known transmission generation constantly, the sequence number of synchronous HARQ process can obtain from subframe numbers; And the transmission of asynchronous HARQ process can take place at any time, and the processing sequence number of asynchronous HARQ process need send together with data.Because become when the HARQ technology can compensate wireless mobile channel well and multipath fading to the influence of signal transmission, so become one of key technology among the LTE.
Though the LTE system supports synchronous self-adapting HARQ, but all based on following assumed condition: when portable terminal need carry out the automatic re-transmission of synchronous self-adapting mixing, one is assigned to CCE (ControlChannel Element, the control channel particle) resource that adequate resources and portable terminal one find PDCCH (Physical Downlink Control Channel) to need surely surely.And actual conditions are, the CCE resource of PDCCH is a up-downgoing scheduling resources shared, the situation that portable terminal can not find suitable CCE resource may occur; And because the LTE system supports SPS (Semi-Persistent Scheduling, semipermanent scheduling), portable terminal retransmission time resource may be occurred by more SPS CU, adequate resources can't be assigned in case retransmit more some portable terminal that may cause of user.
Yet in the existing protocol of LTE system, the bit number of ascending HARQ information is 1 bit, and the indication type of ascending HARQ information comprises: ACK and NACK wherein, NACK represents unsuccessful transmission, needs should to mix automatic re-transmission synchronously; ACK represents successfully to transmit, and need not synchronous hybrid automatic repeat, referring to table 1, is the mapping relations table of ascending HARQ information indication type and bit in the existing protocol:
Table 1
| Bit | Information indication type |
| 0 | NACK |
| 1 | ACK |
Hence one can see that, when current scheduling does not have resource to carry out synchronous hybrid automatic repeat constantly, but can't wait for synchronous hybrid automatic repeat by indicating mobile terminal in the prior art.
Summary of the invention
In order to address the above problem, the method, portable terminal and the base station that the purpose of this invention is to provide a kind of up hybrid automatic retransmission request information indication, make when current scheduling does not have resource to carry out synchronous hybrid automatic repeat constantly, but indicating mobile terminal is after obtaining the control command of synchronous hybrid automatic repeat, carry out synchronous hybrid automatic repeat again, thereby can avoid the conflict of resource.
In order to achieve the above object, the invention provides a kind of method of up hybrid automatic retransmission request information indication, described method comprises:
Whether the data from portable terminal that receive are detected in the base station correct;
If the described data that receive are incorrect, whether described portable terminal is detected in described base station constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling;
If described portable terminal is not when current scheduling has resource to carry out synchronous hybrid automatic repeat constantly, described base station is the wait synchronous hybrid automatic repeat to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues.
Preferably, described method also comprises:
Described base station sends the control command of synchronous hybrid automatic repeat to described portable terminal.
Preferably, described if described portable terminal is not when current scheduling has resource to carry out synchronous hybrid automatic repeat constantly, described base station is specially for the step of waiting for synchronous hybrid automatic repeat to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues:
When if described portable terminal does not have resource to carry out the automatic re-transmission of synchronous self-adapting mixing in current scheduling constantly, described base station is to wait for the automatic re-transmission of synchronous self-adapting mixing to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues.
The present invention also provides a kind of base station, and described base station comprises:
First detection module, whether be used to detect the data from portable terminal that receive correct;
Second detection module, whether be used to detect described portable terminal constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling;
Processing module, be used for when described portable terminal when preceding scheduling does not constantly have resource to carry out synchronous hybrid automatic repeat, the indication type of the up hybrid automatic retransmission request information that issues to described portable terminal is for waiting for synchronous hybrid automatic repeat.
Preferably, described base station also comprises:
Order issues module, is used for sending to described portable terminal the control command of synchronous hybrid automatic repeat.
The present invention also provides a kind of method of up hybrid automatic retransmission request information indication, and described method comprises:
Portable terminal detects the indication type of the up hybrid automatic retransmission request information that receives;
If the indication type of described up hybrid automatic retransmission request information is that described portable terminal is waited for the control command of synchronous hybrid automatic repeat when waiting for synchronous hybrid automatic repeat.
Preferably, described method also comprises:
Receive the control command of described synchronous hybrid automatic repeat when described portable terminal after, described portable terminal carries out synchronous hybrid automatic repeat.
The present invention also provides a kind of portable terminal, and described portable terminal comprises:
Indicate the type detection module, be used to detect the indication type of the up hybrid automatic retransmission request information that receives;
Control module, the indication type that is used in described up hybrid automatic retransmission request information is when waiting for synchronous hybrid automatic repeat, waits for the control command of synchronous hybrid automatic repeat.
Preferably, described portable terminal also comprises:
The synchronous hybrid automatic repeat module is used for carrying out synchronous hybrid automatic repeat after receiving the control command of described synchronous hybrid automatic repeat.
Preferably, described synchronous hybrid automatic repeat module comprises:
Synchronous self-adapting mixes automatic retransmission unit, is used for carrying out synchronous self-adapting and mixing re-transmission automatically after receiving the automatic control command that retransmits of synchronous self-adapting mixing.
As shown from the above technical solution, indication type by expansion ascending HARQ information, promptly increase the indication type of waiting for synchronous hybrid automatic repeat, thereby make when current scheduling does not have suitable resource to carry out synchronous hybrid automatic repeat constantly, can indicating mobile terminal after obtaining the control command of synchronous hybrid automatic repeat, carry out synchronous hybrid automatic repeat again, thereby effectively avoided influencing synchronous hybrid automatic repeat, avoided resource contention because of portable terminal can't distribute adequate resources.
Description of drawings
Fig. 1 is the method flow diagram one of up hybrid automatic retransmission request information indication in the embodiments of the invention;
Fig. 2 is the structured flowchart of base station in the embodiments of the invention;
Fig. 3 is the method flow diagram two of up hybrid automatic retransmission request information indication in the embodiments of the invention;
Fig. 4 is the structured flowchart of portable terminal in the embodiments of the invention.
Embodiment
In the present embodiment, by in the indication type of ascending HARQ information, increasing the indication type of waiting for synchronous hybrid automatic repeat, make portable terminal when current scheduling does not have suitable resource to carry out synchronous hybrid automatic repeat constantly, can indicating mobile terminal only after obtaining the control command of synchronous hybrid automatic repeat, carry out synchronous hybrid automatic repeat again, above-mentioned synchronous hybrid automatic repeat comprises that synchronous non-self-adapting mixes re-transmission automatically and synchronous self-adapting mixes automatic the re-transmission.
In the present embodiment, can increase the information of waiting for synchronous hybrid automatic repeat by mode to the expansion of ascending HARQ information, for example represent to wait for the indication type of synchronous hybrid automatic repeat, do not limit the concrete manifestation form of the indication type of HARQ information certainly in the present embodiment with HARQWaiting.
And, do not limit the mode that the indication type of HARQ information is expanded in the present embodiment yet, the information of one wait synchronous hybrid automatic repeat for example also can directly be set, after portable terminal was handed down to this information in the base station, this portable terminal was then waited for the control command of synchronous hybrid automatic repeat.
Referring to table 2, be the indication type of ascending HARQ information in the embodiments of the invention and the mapping relations table of bit, the bit number of HARQ information is 2 bits in the table, the bit number of this HARQ information is not limited to this certainly.
Table 2
In the table 2, the indication type NACK of ascending HARQ information represents: unsuccessful transmission needs synchronous hybrid automatic repeat;
The indication type HARQWaiting of ascending HARQ information represents: unsuccessful transmission, wait for synchronous hybrid automatic repeat, and comprise and wait for that synchronous self-adapting mixes automatic re-transmission and waits for that synchronous non-self-adapting mixes re-transmission automatically.
The indication type ACK of ascending HARQ information represents: transmission success need not synchronous hybrid automatic repeat.
Reserved is for keeping the position.
Expanded the bit number of ascending HARQ information in the table 2, by 1 bit expanded to 2 bit in the existing protocol.Certainly do not limit the bit number of expansion back ascending HARQ information in the present embodiment, the bit number of the ascending HARQ information after supposing to expand is n (n 〉=2), then can characterize 2 altogethernThe indication type of individual HARQ information, the mapping relations of indication type and bit have (2n)!=24 kinds.
In the present embodiment, at first whether correct in the base station if detecting the data from portable terminal receive, if the data that receive are incorrect, whether portable terminal is detected in this base station constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling, if this portable terminal is not when current scheduling has resource to carry out synchronous hybrid automatic repeat constantly, the base station is the wait synchronous hybrid automatic repeat to the indication type of the up hybrid automatic retransmission request information that portable terminal issues.
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is done explanation in further detail below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
Referring to Fig. 1, be the method flow diagram one of the automatic retransmission request message indication of up mixing in the embodiments of the invention, concrete steps are as follows:
Whether the data from portable terminal that step 101, base station detection receive are correct, if, execution in step 102; Otherwise, execution in step 103;
In this step, whether the data from portable terminal that can adopt existing detection mode to judge that the base station receives are correct, if correct the reception, then send ack signal to portable terminal, the success of expression transfer of data after portable terminal is received ack signal, sends new data; If incorrect the reception, then execution in step 103;
Step 102, base station send ack signal to portable terminal;
At this moment, this portable terminal need not to carry out synchronous hybrid automatic repeat, after portable terminal is received ack signal, sends new data.
Step 103, base station are detected portable terminal and whether are fit to carry out synchronous non-self-adapting mixing re-transmission automatically, if be fit to execution in step 104; Otherwise, execution in step 105;
In up link, adopt synchronous non-self-adapting HARQ technology usually, therefore can detect portable terminal earlier and whether be fit to carry out synchronous non-self-adapting mixing re-transmission automatically, if it is occupied the automatic resource that retransmits of the synchronous non-self-adapting mixing of portable terminal to occur, such as taking between pre-assigned resource of SPS and the re-transmission user that causes, must carry out synchronous self-adapting and mix automatically and retransmit; In the time of in perhaps the portable terminal retransmission time just in time is in and measures at interval, above-mentioned two kinds of situations can think that this portable terminal is not suitable for adopting the synchronous non-self-adapting mixing to retransmit automatically in this scheduling moment, and portable terminal is not suitable for carrying out the automatic situation about retransmitting of synchronous non-self-adapting mixing and is not limited to this certainly.Mix re-transmission automatically if be fit to synchronous non-self-adapting, then notify portable terminal to carry out non-self-adapting and mix re-transmission automatically, if be not suitable for, can continue then to have judged whether that resource carries out synchronous self-adapting and mix automatically and retransmit, perhaps notify portable terminal to wait for that synchronous non-self-adapting mixes the control command that retransmits automatically.
Step 104, base station notice portable terminal carry out synchronous non-self-adapting and mix re-transmission automatically;
Portable terminal is after receiving the above-mentioned notice of base station, and this portable terminal will adopt synchronous non-self-adapting to mix the mode that retransmits automatically and send data packets for transmission last time.
Step 105, if portable terminal is not suitable for synchronous non-self-adapting to be mixed automatically and retransmits, whether in current scheduling constantly have resource carry out synchronous self-adapting mix automatically retransmit, if execution in step 106 is arranged if detecting portable terminal; Otherwise, execution in step 107;
Just, judge that whether having resource to carry out synchronous self-adapting constantly in current scheduling mixes re-transmission automatically, if having, the mode that can notify portable terminal to adopt synchronous self-adapting to mix re-transmission automatically sends data packets for transmission last time; If do not have, then notify portable terminal to wait for that synchronous self-adapting mixes the control command that retransmits automatically.
Step 106, base station notice portable terminal carry out synchronous self-adapting and mix re-transmission automatically;
Step 107, if current scheduling does not have resource to carry out synchronous self-adapting constantly mixes when retransmitting automatically, the base station retransmits for waiting for that synchronous self-adapting mixes automatically to the indication type of the up hybrid automatic retransmission request information that portable terminal issues;
The indication type of the up hybrid automatic retransmission request information that receives when portable terminal is mixed when retransmitting automatically for waiting for synchronous self-adapting, and this portable terminal waits for that synchronous self-adapting mixes the control command that retransmits automatically.
Just, be not suitable for synchronous non-self-adapting at portable terminal and mix re-transmission automatically, and current scheduling does not constantly have adequate resources to carry out synchronous self-adapting again to mix when retransmitting automatically, the base station indicating mobile terminal is only after obtaining the automatic control command that retransmits of synchronous self-adapting mixing, carry out synchronous self-adapting again and mix re-transmission automatically, avoided resource contention.
A kind of base station is provided in the present embodiment, referring to Fig. 2, has been the structured flowchart of base station in the embodiments of the invention, this base station comprises:
First detection module 21, whether be used to detect the data from portable terminal that receive correct;
Second detection module 22, whether be used to detect this portable terminal constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling;
Processing module 23 is used in that this portable terminal is current when not having resource to carry out synchronous hybrid automatic repeat, and the indication type of the up hybrid automatic retransmission request information that issues to this portable terminal is for waiting for synchronous hybrid automatic repeat.
In an embodiment of the present invention, this base station also comprises:
Order issues module 24, is used for sending to this portable terminal the control command of synchronous hybrid automatic repeat, and the control command of this synchronous hybrid automatic repeat is used for triggering mobile terminals and carries out synchronous hybrid automatic repeat.
In the present embodiment, this second detection module 22 comprises: non-self-adapting detecting unit and self-adapting detecting unit, wherein
The non-self-adapting detecting unit, whether in current scheduling constantly have resource carry out synchronous non-self-adapting mixing automatically re-transmission, if resource is arranged, then carry out synchronous non-self-adapting mixing re-transmission automatically by the notice portable terminal if being used to detect this portable terminal; Otherwise, can trigger the self-adapting detecting unit.
The self-adapting detecting unit, whether be used to detect this portable terminal has resource to carry out synchronous self-adapting mixing re-transmission automatically constantly in current scheduling, when if terminal does not have resource to carry out the automatic re-transmission of synchronous self-adapting mixing in current scheduling constantly, described base station is to wait for the automatic re-transmission of synchronous self-adapting mixing to the indication type of the up hybrid automatic retransmission request information that portable terminal issues.
Embodiment two
Referring to Fig. 3, be the method flow diagram two of up hybrid automatic retransmission request information indication in the embodiments of the invention, concrete steps are as follows:
In the present embodiment, the indication type of this up hybrid automatic retransmission request information can be referring to table 2.
Just,, represent that this portable terminal need wait for the control command of synchronous hybrid automatic repeat, just need the re-transmission of waiting for that the PDCCH control command is indicated if when detecting the indication type of ascending HARQ information and being HARQWaiting.
If when the indication type of up hybrid automatic retransmission request information retransmitted for waiting for that the synchronous non-self-adapting mixing is automatic, portable terminal waited for that synchronous non-self-adapting mixes the control command of automatic re-transmission.
If when the indication type of up hybrid automatic retransmission request information retransmitted for waiting for that the synchronous self-adapting mixing is automatic, portable terminal waited for that synchronous self-adapting mixes the control command of automatic re-transmission.
As shown from the above technical solution, indication type by expansion ascending HARQ information, promptly increase the indication type of waiting for synchronous hybrid automatic repeat, thereby make portable terminal when current scheduling does not have resource to carry out synchronous hybrid automatic repeat constantly, can after obtaining the control command of synchronous hybrid automatic repeat, carry out synchronous hybrid automatic repeat again by indicating mobile terminal, thereby effectively avoid the conflict of resource.
A kind of portable terminal also is provided in the present embodiment, referring to Fig. 4, has been the structured flowchart of embodiments of the invention portable terminal, this portable terminal comprises:
Indicatetype detection module 41, be used to detect the indication type of the up hybrid automatic retransmission request information that receives;
Synchronous hybridautomatic repeat module 43 is used for carrying out synchronous hybrid automatic repeat after receiving the control command of synchronous hybrid automatic repeat.
This synchronous hybrid automatic repeat module comprises: synchronous self-adapting mixes automatic retransmission unit, is used for carrying out synchronous self-adapting and mixing re-transmission automatically after receiving the automatic control command that retransmits of synchronous self-adapting mixing.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the method for a up hybrid automatic retransmission request information indication is characterized in that described method comprises:
Whether the data from portable terminal that receive are detected in the base station correct;
If the described data that receive are incorrect, whether described portable terminal is detected in described base station constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling;
If described portable terminal is not when current scheduling has resource to carry out synchronous hybrid automatic repeat constantly, described base station is the wait synchronous hybrid automatic repeat to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues.
2. method according to claim 1 is characterized in that, described method also comprises:
Described base station sends the control command of synchronous hybrid automatic repeat to described portable terminal.
3. method according to claim 1, it is characterized in that, described if described portable terminal is not when current scheduling has resource to carry out synchronous hybrid automatic repeat constantly, described base station is specially for the step of waiting for synchronous hybrid automatic repeat to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues:
When if described portable terminal does not have resource to carry out the automatic re-transmission of synchronous self-adapting mixing in current scheduling constantly, described base station is to wait for the automatic re-transmission of synchronous self-adapting mixing to the indication type of the up hybrid automatic retransmission request information that described portable terminal issues.
4. a base station is characterized in that, described base station comprises:
First detection module, whether be used to detect the data from portable terminal that receive correct;
Second detection module, whether be used to detect described portable terminal constantly has resource to carry out synchronous hybrid automatic repeat in current scheduling;
Processing module, be used for when described portable terminal when preceding scheduling does not constantly have resource to carry out synchronous hybrid automatic repeat, the indication type of the up hybrid automatic retransmission request information that issues to described portable terminal is for waiting for synchronous hybrid automatic repeat.
5. base station according to claim 4 is characterized in that, described base station also comprises:
Order issues module, is used for sending to described portable terminal the control command of synchronous hybrid automatic repeat.
6. the method for a up hybrid automatic retransmission request information indication is characterized in that described method comprises:
Portable terminal detects the indication type of the up hybrid automatic retransmission request information that receives;
If the indication type of described up hybrid automatic retransmission request information is that described portable terminal is waited for the control command of synchronous hybrid automatic repeat when waiting for synchronous hybrid automatic repeat.
7. method according to claim 6 is characterized in that, described method also comprises:
Receive the control command of described synchronous hybrid automatic repeat when described portable terminal after, described portable terminal carries out synchronous hybrid automatic repeat.
8. a portable terminal is characterized in that, described portable terminal comprises:
Indicate the type detection module, be used to detect the indication type of the up hybrid automatic retransmission request information that receives;
Control module, the indication type that is used in described up hybrid automatic retransmission request information is when waiting for synchronous hybrid automatic repeat, waits for the control command of synchronous hybrid automatic repeat.
9. portable terminal according to claim 8 is characterized in that, described portable terminal also comprises:
The synchronous hybrid automatic repeat module is used for carrying out synchronous hybrid automatic repeat after receiving the control command of described synchronous hybrid automatic repeat.
10. portable terminal according to claim 9 is characterized in that, described synchronous hybrid automatic repeat module comprises:
Synchronous self-adapting mixes automatic retransmission unit, is used for carrying out synchronous self-adapting and mixing re-transmission automatically after receiving the automatic control command that retransmits of synchronous self-adapting mixing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102615103ACN102104457A (en) | 2009-12-18 | 2009-12-18 | Method for indicating uplink hybrid automatic repeat request information, mobile terminal and base station |
| PCT/CN2010/074822WO2010149104A1 (en) | 2009-12-18 | 2010-06-30 | Method, mobile terminal and base station for indicating uplink hybrid automatic repeat request information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102615103ACN102104457A (en) | 2009-12-18 | 2009-12-18 | Method for indicating uplink hybrid automatic repeat request information, mobile terminal and base station |
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| CN102104457Atrue CN102104457A (en) | 2011-06-22 |
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| CN2009102615103APendingCN102104457A (en) | 2009-12-18 | 2009-12-18 | Method for indicating uplink hybrid automatic repeat request information, mobile terminal and base station |
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| WO (1) | WO2010149104A1 (en) |
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| CN112158193A (en)* | 2020-06-24 | 2021-01-01 | 上汽通用五菱汽车股份有限公司 | Automatic parking system, parking safety protection method thereof and storage medium |
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| EP1557967B1 (en)* | 2004-01-22 | 2008-03-26 | Matsushita Electric Industrial Co., Ltd. | Method of HARQ retransmission timing control |
| CN101237309B (en)* | 2007-01-31 | 2011-09-14 | 华为技术有限公司 | Data retransfer method, device and automatic retransfer request entity of transmission end |
| CN106301711B (en)* | 2007-10-23 | 2019-09-13 | 诺基亚技术有限公司 | Method, apparatus and memory for communication |
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- 2009-12-18CNCN2009102615103Apatent/CN102104457A/enactivePending
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