WO2011000320A1 - 调度授权的分配方法与通信设备 - Google Patents
调度授权的分配方法与通信设备 Download PDFInfo
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- WO2011000320A1 WO2011000320A1 PCT/CN2010/074883 CN2010074883W WO2011000320A1 WO 2011000320 A1 WO2011000320 A1 WO 2011000320A1 CN 2010074883 W CN2010074883 W CN 2010074883W WO 2011000320 A1 WO2011000320 A1 WO 2011000320A1
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- data stream
- block size
- transport block
- offset value
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
Definitions
- the present invention relates to communication technologies, and more particularly to a method for allocating scheduling grants and a communication device.
- HSUPA high speed uplink packet access
- SP from the mobile terminal (User Equipment, hereinafter referred to as: UE) to the direction of the radio access network
- UE User Equipment
- HSUPA technology utilizes adaptive coding, physical layer hybrid retransmission, base station (Node B)-based fast scheduling, and 2ms transmission time interval (TTI) short frame transmission to achieve the highest data transmission. Enhancements in rate, cell throughput, and latency.
- the data transmission rate and transmission time of the UE; the Node B determines the current maximum transmission rate of the UE according to the load of the cell, the channel quality of the UE, and the amount of data to be transmitted.
- multiple input multiple output (Multiple Input Multiple Output) is introduced in the downlink direction.
- MIMO MIMO technology to improve performance such as throughput of the downlink system.
- the uplink spectrum utilization is low, the coverage performance is poor, and the user peak rate is also low, which is to be improved.
- the technical problem to be solved by the embodiments of the present invention is to provide a scheduling authorization allocation method and a communication device, and apply MIMO technology to the HSUPA technology to improve spectrum utilization, coverage performance, and user peak rate in the uplink direction, and ensure uplink.
- an authorization value returned by the base station an enhanced dedicated transport channel transport format combination indication E-TFCI offset value, and a data flow identifier corresponding to the E-TFCI offset value, where the E-TFCI offset value is determined by the base station according to the mobile terminal Determined by data transmitted by two data streams;
- the authorization value the E-TFCI offset value, and the data flow identifier of the one data stream corresponding to the E-TFCI offset value.
- a first receiving module configured to receive an authorization value returned by the base station, an E-TFCI offset value, and a data flow identifier corresponding to the E-TFCI offset value, where the E-TFCI offset value is adopted by the base station according to the mobile terminal
- the data transmitted by the two data streams is determined;
- a first determining module configured to determine, according to the authorization value, a transport block size of the data stream identified by the data flow identifier in a current TTI
- a second determining module configured to determine, according to the transport block size and the E-TFCI offset value, a transport block size of the another data stream at a current TTI.
- a second receiving module configured to receive data that is transmitted by the mobile terminal through two data streams
- An allocating module configured to allocate an authorization value to the mobile terminal
- a fifth determining module configured to determine an E-TFCI offset value of one of the two data streams according to data transmitted by the two data streams;
- a second sending module configured to send, to the mobile terminal, the authorization value, the E-TFCI offset value, and the data flow identifier of the one data stream corresponding to the E-TFCI offset value.
- the scheduling method and the communication device provided by the foregoing embodiments of the present invention can apply MIMO technology to the HSUPA technology, and transmit uplink data through two data streams to improve spectrum utilization, coverage, and user peaks in the uplink direction. Rate, and realize the scheduling and authorization allocation of two data streams, so as to ensure the demodulation performance of the data transmitted through the two data streams at the receiving end after using the HSUPA technology in the uplink direction.
- DRAWINGS 1 is a flowchart of an embodiment of a method for allocating scheduling grants according to the present invention
- FIG. 2 is a flowchart of another embodiment of a method for allocating scheduling authorization according to the present invention.
- FIG. 3 is a flowchart of still another embodiment of a method for allocating scheduling authorization according to the present invention.
- FIG. 4 is a schematic structural diagram of an embodiment of a communication device according to the present invention.
- FIG. 5 is a schematic structural diagram of another embodiment of a communication device according to the present invention.
- FIG. 6 is a schematic structural diagram of still another embodiment of a communication device according to the present invention.
- FIG. 7 is a schematic structural diagram of still another embodiment of a communication device according to the present invention.
- FIG. 8 is a schematic structural diagram of still another embodiment of a communication device according to the present invention.
- FIG. 9 is a schematic structural diagram of an embodiment of a communication system according to the present invention.
- the MIMO technology is applied to the HSUPA technology to transmit uplink data through two data streams to improve the uplink spectrum. Utilize efficiency to improve uplink coverage performance and user peak rate.
- the UE can simultaneously transmit two data blocks to the Node B in the same TTI, that is, transmit data to the Node B through two data streams, which is also called dual stream transmission data.
- the UE When the UE is in MIMO mode and transmits uplink data to the Node B through two data streams, if the UE receives an absolute grant value or a relative grant value that the Node B delivers for the entire UE, or two of the same for the two data streams.
- the value is authorized, due to various differences in channel conditions, the two data streams sent by the UE using the same authorization value may have a difference in the performance of the I-period at the receiving end, thereby affecting the correct decoding of the data. Therefore, it is necessary to eliminate the transport block size of the two data streams, thereby ensuring that the uplink data transmitted through the two data streams has the same or similar demodulation performance at the receiving end.
- FIG. 1 is a flowchart of an embodiment of a method for allocating scheduling grants according to the present invention. The process of this embodiment may be specifically implemented by a UE. As shown in FIG. 1, this embodiment includes the following steps:
- Step 101 Receive an authorization value returned by the Node B, an Enhanced Dedicated Transport Channel (E-DCH) transport format combination indication (E-TFC Indication, E-TFCI) offset value, and the The data stream identifier corresponding to the E-TFCI offset value, wherein the E-TFCI offset value is determined by the Node B according to data transmitted by the mobile terminal through two data streams.
- E-DCH Enhanced Dedicated Transport Channel
- E-TFCI transport format combination indication
- the E-TFCI offset value may be the previous one of the Node B in the current TTI.
- the data generated by the two data streams in the TTI may be generated by the data transmitted by the two data streams in the previous RTT of the current round-trip time (RTT), or It is generated at any other time after the Node B receives the data transmitted by the mobile terminal through the two data streams.
- RTT current round-trip time
- Step 102 Determine, according to the authorization value returned by the Node B, the transport block size of the data stream identified by the data flow identifier in the current TTI, and the index number corresponding to the transport block size may be represented as an E-TFCI.
- Step 103 Determine, according to the data packet identifier, the transport block size of the current TTI, and the E-TFCI offset value returned by the Node B, determine the transport block size of the other data stream in the current TTI.
- FIG. 2 is a flowchart of another embodiment of a method for allocating scheduling grants according to the present invention. The process of this embodiment may also be implemented by a UE. As shown in FIG. 2, the embodiment includes the following steps:
- Step 201 Receive an authorization value returned by the Node B, an E-TFCI offset value, and a data flow identifier corresponding to the E-TFCI offset value.
- the E-TFCI offset value is generated by the Node B for data transmitted by the mobile terminal through two data streams, so as to calculate the transport block size of the two data streams in the current TTI.
- the two data streams include the data stream identified by the data stream identifier and another data stream.
- Step 202 Obtain an authorization value of the current TTI of the data stream identified by the data flow identifier according to the authorization value returned by the Node B, where the authorization value is a Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request). : HARQ) The authorization value of the process.
- the authorized value returned by the Node B is an authorized value allocated to the UE
- the half value of the authorized value is used as the data flow identifier to identify the data flow at the current transmission time interval (Transport Time Interval, hereinafter referred to as: The authorized value of TTI).
- TTI Transmission Time Interval
- the authorization value returned by the Node B is two identical authorization values assigned to the two data flows, the authorization value is directly used as the authorization value of the current TTI identified by the data flow identifier.
- Step 203 Determine, according to the authorization value determined in step 202 and the modulation mode adopted by the UE, a calculation formula of the E-TFC selection process, and calculate, according to the calculation formula, a data size that the scheduling authorization service can send in the current TTT, and assume the data size representation. For a.
- Step 204 According to the maximum available transmit power of the UE, and other used uplinks other than the E-DCH Dedicated Physical Data Channel (E-DCH Dedicated Physical Data Channel, E-DPDCH) The transmit power of the channel is calculated, and the remaining transmit power that can be used as the E-DPDCH transmit power is calculated, and according to the half value of the remaining transmit power, the data stream identified by the data stream identifier is calculated by the E-TFC restriction process to be supported by the current TTI.
- the transport block size assuming that the calculated transport block size is represented as B.
- step 204 may also be performed before step 203 or simultaneously with step 203.
- Step 205 The size of the data volume that the UE needs to transmit in the current TTI according to the data flow identifier, the maximum supported transport block size B, and the size a of the data that can be sent by the authorized service, determine the identifier of the data flow identifier.
- the transport block size of the current TTI, the transport block size can be expressed as C1, and its corresponding index number is represented as E-TFCI1.
- the data volume identified by the data flow identifier indicates that the total amount of data to be transmitted in the current TTI is represented as A, and if only the scheduled authorization service data needs to be transmitted, the data flow identified by the data flow identifier needs to be total in the current TTI.
- comparing the size A of the data to be transmitted with the size B of the transport block calculated by the E-TFC restriction process, and determining that the size of the transport block identified by the data stream identifier in the current TTI is Cl min ⁇ A , B ⁇ .
- SI non-scheduled authorization service data and/or scheduling information
- the non-scheduled authorization service data size is represented as b
- the SI size to be transmitted is represented as c
- the data flow identifier identified by the data flow identifier needs to transmit a total amount of data A in the current TTI, which is equal to the scheduling authorization service data size a
- Step 206 Calculate a corresponding E-DPDCH power offset factor according to the determined data stream identifier of the identified data stream in the current TTI transport block size C1, thereby determining the E-DPDCH transmit power of the data stream in the current TTI, The transmit power of the other data stream in the data stream is the same as the transmit power.
- Step 207 Determine, according to the determined data flow identifier, an index number E-TFCI1 corresponding to the transport block size C1 of the current TTI, and an E-TFCI offset value returned by the Node B, to determine another data stream in the current TTI.
- the transport block size C2, the index value corresponding to the transport block size C2 is represented as E-TFCIC2.
- the data stream identified by the data stream identifier may be a data stream that transmits data with better demodulation performance in the two data streams.
- the E-TFCI offset returned by the NodeB The value is a number greater than or equal to zero.
- the difference between the E-TFCI1 and the E-TFCI offset value corresponding to the transport block size C1 of the current TTI may be obtained from the data stream identifier, BP: E-TFCIl -E - TFCI offset value, using the obtained difference E-TFCI1-E-TFCI offset value as another data stream at the current TTI transport block size C2 corresponding index number E-TFCI2, another data stream That is, the data stream of the demodulated data is transmitted in the two data streams.
- the difference between the E-TFCI1 and the E-TFCI offset value corresponding to the transport block size C1 of the data stream is The value, as the E-TFCI2 corresponding to the transport block size C2 of the data stream transmitting the data with poor demodulation performance, that is, in the case where the transmission power is constant, the data stream transmission for transmitting the data with poor demodulation performance is reduced.
- the number of bits increases the energy of the number of bits transmitted, thereby effectively improving the demodulation performance of the data stream transmitting the data with poor demodulation performance, so that the two data streams have the same or similar demodulation at the receiving end. performance.
- the data stream identified by the data stream identifier is a data stream in which data with poor demodulation performance is transmitted in the two data streams.
- the E-TFCI offset value returned by the NodeB is A value less than or equal to zero.
- the difference between the E-TFCI1 and the E-TFCI offset value corresponding to the current TTI transport block size C1 of the data stream identified by the data stream identifier may be BP: E-TFCI1 -E-TFCI
- the offset value is taken as the E-TFCI2 corresponding to the transport block size C2 with the difference E-TFCI1-E-TFCI offset value.
- the E-TFCI2 corresponding to the transport block size C2 may be determined in another manner according to the E-TFCI offset value returned by the E-TFCI1 and the Node B corresponding to the transport block size C1.
- step 207 may also be performed prior to step 206 or concurrently with step 206.
- Step 208 In the current TTI, the transmit power determined by step 205, on the E-DPDCH, respectively, the uplink data stream of the transport block size C2 corresponding to the transport block size C1 and E-TFCI2 corresponding to the E-TFCI1, to the Node B. send data.
- the current TTT may also be identified first.
- the data transmitted through the two data streams includes scheduling authorization service data.
- the data transmitted through the two data streams includes the scheduling authorization service data, or when the data sent by one of the data streams includes the scheduling authorization service data, by step 207, according to the transport block size C1 corresponding to E-TFCI1 and E- TFCI offset value to determine the transport block size E-TFCI 2 corresponding to C2.
- the E-TFCI corresponding to the transport block size C1 may be directly used as the E-TFCI corresponding to the transport block size C2 of the other data stream.
- FIG. 3 is a flowchart of still another embodiment of a method for allocating scheduling authorization according to the present invention.
- the process of this embodiment may be specifically implemented by a Node. As shown in FIG. 3, this embodiment includes the following steps:
- Step 301 Receive data sent by the UE by using two data streams. Specifically, each data stream carries a data flow identifier that is used to identify the data flow.
- Step 302 Assign an authorization value to the UE, and determine an E-TFCI offset value of one of the two data streams according to data transmitted by the UE through the two data streams.
- a data stream for determining an E-TFCI offset value may be a data stream in which two demodulated data with better or worse performance are transmitted, or two preset data, according to a preset setting. Any one of the streams in the stream.
- assigning an authorization value to the UE may be: assigning an absolute grant value to the UE or a relative grant value of an authorization value of the HARQ process allocated to the UE in the previous RTT; or, respectively, to the two data streams Two identical grant values are assigned, the grant value being an absolute grant value or a relative grant value of the grant value of the HARQ process assigned to the UE in the previous RTT.
- Step 303 Return, to the UE, an assigned authorization value, a determined E-TFCI offset value, and a data flow identifier of a data stream corresponding to the E-TFCI offset value.
- the Node B determines the E-TFCI offset value of one of the two data streams according to the data transmitted by the two data streams, and sends the E-TFCI offset value to the UE, so that the UE determines another data stream according to the E-TFCI offset value in the current TTI.
- the E-TFCI corresponding to the transport block size thereby realizing the adjustment of the E-TFCI corresponding to the transport block size of the current TTI of another data stream, that is, adjusting the transport block size of the other data stream in the current TTI, In this way, in the case that the transmission powers of the two data streams are the same, it can be ensured that the data transmitted through the two data streams have the same or similar demodulation performance at the receiving end, thereby effectively ensuring the correct decoding of the dual-stream transmission data by the receiving end.
- the E-TFCI offset corresponding to the transport block size of the current TTI of one of the two data streams may be determined according to the data transmitted through the two data streams. Value: Demodulate the data transmitted through the two data streams and compare the demodulation performance of the data transmitted through the two data streams to obtain the difference in demodulation performance of the data transmitted through the two data streams; The difference in demodulation performance of the data transmitted by the data stream determines the E-TFCI offset value of a data stream.
- Determining the E-TFCI offset value of a data stream in the difference in demodulation performance of data transmitted through two data streams When the E-TFCI corresponding to the current TTI transport block size is adjusted by the E-TFCI offset value, the data transmitted through the two data streams can be controlled more directly and accurately at the current TTI. Demodulation performance ensures that the demodulation performance is the same or similar.
- FIG. 4 is a schematic structural diagram of an embodiment of a communication device according to the present invention.
- the communication device of the embodiment can be used as a UE to implement the process of the embodiment shown in FIG. 1 or FIG. 2 of the present invention.
- the communication device of this embodiment includes a first receiving module 401, a first determining module 402, and a second determining module 403.
- the first receiving module 401 is configured to receive an authorization value returned by the Node B, an E-TFCI offset value, and a data flow identifier corresponding to the E-TFCI offset value.
- the E-TFCI offset value is determined by the Node B based on the data transmitted by the UE through the two data streams.
- the E-TFCI offset value may be generated by the Node B in the data transmitted by the two data streams in the previous TTI of the current TTI, or may be the previous RTT of the Node B in the current RTT. Generated by data transmitted by two data streams.
- the first determining module 402 is configured to determine, according to the authorization value received by the first receiving module 401, the size of the data block identified by the data stream identifier in the current TTI, and the corresponding index number may be represented as E-TFCI1.
- the second determining module 403 is configured to determine, according to the transport block size determined by the first determining module 402 and the E-TFCI offset value received by the first receiving module 401, a transport block size of another data stream in the current TTI, where the corresponding The index number can be expressed as E-TFCI2.
- the first determining module 402 includes a first obtaining unit 501 and a first determining unit 502, as compared with the embodiment shown in FIG.
- the first obtaining unit 501 is configured to obtain, according to the identifier received by the first receiving module 401, the authorization value of the data stream identified by the data stream identifier in the current TTI, where the authorization value is the authorization of the HARQ process corresponding to the data stream. value.
- the first determining unit 502 is configured to determine, according to the authorized value of the current TTI, the data stream identified by the data flow identifier, the transport block size of the data stream identified by the data flow identifier in the current TTI.
- FIG. 6 is a schematic structural diagram of still another embodiment of the communication device according to the present invention.
- the communication device of the embodiment can also be used as a UE to implement the process of the embodiment shown in FIG. 1 or FIG. 2 of the present invention.
- the communication device of this embodiment further includes an identification module 404.
- the identification module 404 is configured to identify whether data transmitted through the two data streams in the current TTI includes scheduling authorization service data.
- the second determining module 403 specifically, according to the identification result of the identification module 404, when the data transmitted by the two data streams in the current TTI includes the scheduling authorization service data, or the data transmitted through one of the data streams includes the scheduling authorization service.
- the data is received by the first receiving module 401 according to the E-TFCI1 corresponding to the transmission fast size C1 determined by the first determining module 402.
- the E-TFCI offset value determines the E-TFCI2 of the other data stream in the current TTI transport block size C2.
- the communication device of the embodiment of the present invention may further include a third determining module 405, according to the identification result of the identification module 404, when the data transmitted by the two data streams in the current TTI does not include the scheduling authorization service data, E-TFCI1 corresponding to the transport block size C2 of the current TTI is directly used as E-TFCI1 as another data stream.
- the communication device of the embodiment of the present invention may further include a fourth determining module 406 and a first sending module 407.
- the fourth determining module 406 is configured to determine, according to the E-TFCI1 corresponding to the transport block size C1 determined by the first determining module 402, the transmit power of the two data streams at the current TTI.
- the first sending module 407 transmits the uplink power stream of the transport block size C1 corresponding to the E-TFCI1 and the transport block size C2 corresponding to the E-TFCI2 to the Node B according to the transmit power determined by the fourth determining module 406 in the current TTI.
- the data may further include a fourth determining module 406 and a first sending module 407.
- the fourth determining module 406 is configured to determine, according to the E-TFCI1 corresponding to the transport block size C1 determined by the first determining module 402, the transmit power of the two data streams at the current TTI.
- the first sending module 407 transmits the uplink power stream of the transport block size C1
- FIG. 7 is a schematic structural diagram of still another embodiment of a communication device according to the present invention, where the communication device can be used as
- Node B implements the flow of the embodiment shown in Fig. 3 of the present invention.
- the communication device of this embodiment includes a second receiving module 601, an allocating module 602, a fifth determining module 603, and a second transmitting module 604.
- the second receiving module 601 is configured to receive data that is sent by the UE through two data streams.
- the allocating module 602 is configured to allocate an authorization value to the UE after the UE receives the data transmitted by the two data streams by the second receiving module 601.
- the fifth determining module 603 is configured to determine an E-TFCI offset value of one of the two data streams according to the data transmitted by the two data streams received by the second receiving module 601.
- the second sending module 604 is configured to send, to the UE, an authorization value allocated by the allocation module 602, an E-TFCI offset value determined by the fifth determining module 603, and a data flow identifier of a data stream corresponding to the E-TFCI offset value. .
- the allocation module 602 may specifically allocate an absolute authorization value or a relative authorization value of the authorization value of the HARQ process allocated to the UE in the previous RTT.
- the allocation module 602 may specifically allocate two identical authorization values to the two data streams, and the authorization value may be an absolute authorization value, or may be a relative value of the authorization value of the HARQ process allocated to the UE in the previous RTT.
- Authorization value may be an absolute authorization value, or may be a relative value of the authorization value of the HARQ process allocated to the UE in the previous RTT.
- FIG. 8 is a schematic structural diagram of another embodiment of the communication device according to the present invention.
- the communication device of the embodiment can also be used as a Node B to implement the process of the embodiment shown in FIG. 3 of the present invention.
- the fifth determining module 603 includes a demodulating unit 701, a second obtaining unit 702, and a second determining unit 703, as compared with the embodiment shown in FIG.
- the demodulation unit 701 is configured to demodulate data transmitted by the UE received by the second receiving module 601 through two data streams.
- the second obtaining unit 702 is configured to acquire a demodulation performance difference of data transmitted through the two data streams according to the demodulation result of the demodulation unit 701.
- the second determining unit 703 is configured to determine an E-TFCI offset value of the one data stream according to the demodulation performance difference acquired by the second obtaining unit 702.
- a communication system provided by an embodiment of the present invention includes a Node B and a UE.
- Node B is used for receiving The data transmitted by the UE through two data streams; the assignment value is assigned to the UE, and the E-TFCI offset value of one of the two data streams is determined according to the data transmitted through the two data streams; the authorization value is returned to the UE,
- the E-TFCI offset value and the E-TFCI offset value correspond to a data stream identifier of a data stream.
- the Node B can be implemented by any of the embodiments shown in FIG. 7 or 8.
- the UE is configured to receive an authorization value returned by the Node B, an E-TFCI offset value, and a data flow identifier of a data stream; determining, according to the authorization value therein, a transport block size of the data stream identified by the data flow identifier in the current TTI; The transport block size and the E-TFCI offset value returned by the Node B determine the transport block size of the other data stream at the current TTI.
- the UE may be implemented by any of the embodiments shown in FIG. 4-6.
- FIG. 9 is a schematic structural diagram of an embodiment of a communication system according to the present invention.
- the Node B is implemented by using the embodiment shown in FIG. 8.
- the UE is implemented by using the embodiment shown in FIG. 6.
- the MIMO technology can be applied to the HSUPA technology to transmit uplink data through two data streams, thereby improving uplink spectrum utilization efficiency, improving uplink coverage performance and user peak rate, and adjusting two data streams by using an authorization value.
- the transport block size is ensured, and after the HSUPA technology is used in the uplink direction, the data transmitted through the two data streams has the same or similar demodulation performance at the receiving end, thereby effectively ensuring correct decoding of the two data streams by the receiving end.
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP10793615.5A EP2437565B1 (en) | 2009-07-01 | 2010-07-01 | Methods and communication devices for assigning a scheduling grant |
BRPI1015581-3A BRPI1015581B1 (pt) | 2009-07-01 | 2010-07-01 | método para atribuir concessão de escalonamento e dispositivo de comunicação |
US13/340,376 US8908622B2 (en) | 2009-07-01 | 2011-12-29 | Method and communication device for assigning scheduling grant |
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CN2009100880513A CN101938786B (zh) | 2009-07-01 | 2009-07-01 | 调度授权的分配方法与通信设备 |
CN200910088051.3 | 2009-07-01 |
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US13/340,376 Continuation US8908622B2 (en) | 2009-07-01 | 2011-12-29 | Method and communication device for assigning scheduling grant |
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WO2011000320A1 true WO2011000320A1 (zh) | 2011-01-06 |
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US (1) | US8908622B2 (zh) |
EP (1) | EP2437565B1 (zh) |
CN (1) | CN101938786B (zh) |
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Also Published As
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EP2437565A1 (en) | 2012-04-04 |
US20120099548A1 (en) | 2012-04-26 |
CN101938786A (zh) | 2011-01-05 |
CN101938786B (zh) | 2013-03-20 |
BRPI1015581A2 (pt) | 2016-04-26 |
US8908622B2 (en) | 2014-12-09 |
BRPI1015581B1 (pt) | 2021-01-26 |
EP2437565B1 (en) | 2013-12-25 |
EP2437565A4 (en) | 2012-08-08 |
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