CN103220792B - For configuring the method and apparatus associating PHICH being associated with PUSCH - Google Patents
For configuring the method and apparatus associating PHICH being associated with PUSCH Download PDFInfo
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- CN103220792B CN103220792B CN201210019245.XA CN201210019245A CN103220792B CN 103220792 B CN103220792 B CN 103220792B CN 201210019245 A CN201210019245 A CN 201210019245A CN 103220792 B CN103220792 B CN 103220792B
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Abstract
The method and apparatus that the present invention is provided to the association PHICH that configuration associates with PUSCH, it can be effectively realized the association between PUSCH and PHICH.Described association PHICH is positioned at one of the PHICH region and ePHICH region left over.The base station of communication system includes for the PUSCH configured with the subscriber equipment method associating PHICH being associated: indicate information to described subscriber equipment sending zone, the region that its instruction described association PHICH is positioned at；Association instruction information is sent, the described association PHICH in its instruction region indicated by described region instruction information to described subscriber equipment.The subscriber equipment of communication system is used for configure the method associating PHICH being associated of the PUSCH with described subscriber equipment include: receiving area instruction information, the region that its instruction described association PHICH is positioned at；Receive association instruction information, the described association PHICH in its instruction region indicated by described region instruction information；And according to the region instruction information received and the association instruction information received, it is determined that described association PHICH.
Description
Technical field
The present invention relates to communication system, particularly for the method and apparatus associating PHICH that configuration is associated with PUSCH.
Background technology
In lte-a system, PHICH (PhysicalHybrid-ARQIndicatorChannel, physical hybrid automatic repeat request indicator channel) carry HARQACK/NACK (hybrid automatic repeat-request feedback), it is used for indicating whether base station (eNodeB) is successfully received subscriber equipment (UserEquipment, UE) transmission on its PUSCH (PhysicalUplinkSharedChannel, Physical Uplink Shared Channel).Each PHICH and one PUSCH is associated.
Recently, day by day it is expected in lte-a system and introduces ePHICH (enhancedPHICH, the PHICH strengthened), thus supporting frequency domain ICIC (Inter-CellInterferenceCoordination, Inter-Cell Interference Coordination) and meet the demand of a large amount of ACK/NACK in cooperative multipoint transmission (CoordinatedMulti-Pointtransmission, CoMP).
The PHICH (legacyPHICH) left over is arranged in control territory, and uses transmitting diversity mode transmission to increase the robustness of transmission.EPHICH is arranged in data field, supports closed loop transmission such that it is able to realize effective utilization of Radio Resource based on channel condition information.Additionally, ePHICH still supports open-loop transmission such that it is able to particularly ensure the robustness of transmission when there is no channel condition information.
After introducing ePHICH, for a certain subscriber equipment, it is likely located at one of three below region with its PUSCH PHICH being associated: the PHICH region left over, uses the ePHICH region of open-loop transmission, and use the ePHICH region of closed loop transmission.This makes the subscriber equipment cannot it is determined that search which region to obtain about the HARQ feedback of the transmission on its PUSCH.
Additionally, for ePHICH region, due to the difference (open-loop transmission or closed loop transmission) of transmission plan, the identification means of PHICH therein also can be different accordingly.This makes the association between configuration PUSCH and PHICH become more uncertain.
Summary of the invention
The problems referred to above for prior art, an object of the present invention is to provide the scheme of a kind of association for configuring between PUSCH and PHICH, it can be effectively realized the association between PUSCH and PHICH, so that subscriber equipment can determine that the association PHICH being associated with its PUSCH to obtain corresponding HARQ feedback from this association PHICH effectively.
Being used for the PUSCH configured with the subscriber equipment method associating PHICH being associated in the base station of communication system according to an aspect of the invention, it is provided a kind of, wherein said association PHICH is positioned at one of the PHICH region and ePHICH region left over.Said method comprising the steps of: indicate information to described subscriber equipment sending zone, the region that its instruction described association PHICH is positioned at；Association instruction information is sent, the described association PHICH in its instruction region indicated by described region instruction information to described subscriber equipment.
Thus, subscriber equipment can determine the association PHICH associated with its PUSCH effectively.Specifically, according to the region instruction information received, subscriber equipment can determine which region the association PHICH associated with its PUSCH is arranged in, and according to the association instruction information received, subscriber equipment can know which in the PHICH comprised in determined region this association PHICH be further.
A specific embodiment according to the present invention, described ePHICH region includes multiple ePHICH subregion；When described region indicates information to indicate described ePHICH, described region instruction information indicates the described association PHICH subregion being positioned at further.
Preferably, the plurality of ePHICH subregion uses different transmission plans.In one example, the plurality of ePHICH subregion includes an ePHICH subregion and the 2nd ePHICH subregion, uses open-loop transmission scheme in a described ePHICH subregion, uses closed loop transmission scheme in described 2nd ePHICH subregion.
Described association instruction information can be represented in many ways.
A specific embodiment according to the present invention, described association instruction information includes the sum of the PHICH in the region indicated by described region instruction information.
Another specific embodiment according to the present invention, described association instruction information includes the mark of described association PHICH.
Described region instruction information and described association instruction information can be sent in many ways.Instruction information in described region can send with semi-static mode or dynamical fashion.When the PHICH in the region indicated by described association instruction information includes described region instruction information total, this association instruction information can send with semi-static mode or dynamical fashion；When described association instruction information includes the mark of described association PHICH, this association instruction information sends in a dynamic fashion.
When sending described region instruction information and/or described association instruction information in a dynamic fashion, these information can be carried by the uplink assignment dispatch of the PUSCH of subscriber equipment.
According to another aspect of the present invention, provide a kind of in the subscriber equipment of communication system for the PUSCH configured with the described subscriber equipment method associating PHICH being associated, wherein said association PHICH is positioned at one of the PHICH region and ePHICH region left over.Said method comprising the steps of: a. receiving area instruction information, the region that its instruction described association PHICH is positioned at；B. association instruction information is received, the described association PHICH in its instruction region indicated by described region instruction information；And c. is according to the region instruction information received and the association instruction information received, it is determined that described association PHICH.
A specific embodiment according to the present invention, described association instruction information includes the sum of the PHICH in the region indicated by described region instruction information；Described step c includes: c1. obtains the index of described PUSCH；C2. the index according to the sum of described PHICH and acquired described PUSCH, it is determined that the index of described association PHICH.
The index of described PUSCH can be obtained in many ways.Such as, in step c1, according to the index of the Physical Resource Block for transmitting described PUSCH, for transmitting the cyclic shift index of the index of the initialization sequence of the demodulated reference signal of described PUSCH, described demodulated reference signal, obtain the index of described PUSCH.
Another specific embodiment according to the present invention, described association instruction information includes the mark of described association PHICH.
The mark of described association PHICH can be represented in many ways.Such as, the mark of described association PHICH includes: for transmitting the index of the Physical Resource Block of described association PHICH, the index of the PHICH group belonging to described association PHICH, the index of the orthogonal sequence corresponding to described association PHICH.
According to a further aspect of the invention, it is provided that a kind of first device associate PHICH being associated for the PUSCH configured with subscriber equipment in the base station of communication system, wherein, the described PHICH that associates is positioned at one of the PHICH region and ePHICH region left over.Described first device includes: the first transmitting element, for indicating information to described subscriber equipment sending zone, and the region that its instruction described association PHICH is positioned at；Second transmitting element, the described association PHICH for sending association instruction information to described subscriber equipment, in its instruction region indicated by described region instruction information.
According to a further aspect of the invention, provide a kind of in the subscriber equipment of communication system for the PUSCH configured with described subscriber equipment the second device associating PHICH being associated, wherein, described association PHICH is positioned at one of the PHICH region and ePHICH region left over.Described second device includes: first receives unit, indicates information for receiving area, the region that its instruction described association PHICH is positioned at；Second receives unit, is used for receiving association instruction information, the described association PHICH in its instruction region indicated by described region instruction information；And determine unit, for according to the region instruction information received and the association instruction information received, it is determined that described association PHICH.
Accompanying drawing explanation
By reading the detailed description non-limiting specific embodiment made below with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent upon.
Fig. 1 illustrates the schematic diagram of the subframe of the communication system of a specific embodiment according to the present invention；
Fig. 2 illustrate a specific embodiment according to the present invention in the base station of communication system for the PUSCH configured with the subscriber equipment method flow diagram associating PHICH being associated；
Fig. 3 illustrate a specific embodiment according to the present invention in the base station of communication system for the schematic diagram of the PUSCH configured with the subscriber equipment first device associating PHICH being associated；
Fig. 4 illustrate a specific embodiment according to the present invention in the subscriber equipment of communication system for the PUSCH configured with the described subscriber equipment method flow diagram associating PHICH being associated；
Fig. 5 illustrate a specific embodiment according to the present invention in the subscriber equipment of communication system for the schematic diagram of the PUSCH configured with described subscriber equipment the second device associating PHICH being associated；
Fig. 6 illustrates the schematic diagram of the cell comprising described region instruction information and described association instruction information of a specific embodiment according to the present invention；And
Schematic diagram that Fig. 7 illustrates a specific embodiment according to the present invention, indicated information in FDD system by the uplink assignment dispatch carrying described region instruction information of described PUSCH and/or described association.
Specific embodiment
Fig. 1 illustrates the schematic diagram of the subframe of the communication system of a specific embodiment according to the present invention.In general, each subframe includes multiple PHICH.PHICH is divided into PHICH and the ePHICH left over.For a subscriber equipment, it is probably, with its PUSCH PHICH being associated, the PHICH left over, it is also possible to ePHICH.
With reference to Fig. 1, subframe includes controlling territory and data field.The PHICH region left over is arranged in control territory, and comprises multiple PHICH left over.EPHICH region is arranged in data field, and includes an ePHICH subregion and the 2nd ePHICH subregion, and it comprises at least one ePHICH respectively.EPHICH in oneth ePHICH subregion and the 2nd ePHICH subregion can use different transmission plans.Such as, an ePHICH subregion uses open-loop transmission, the 2nd ePHICH subregion uses closed loop transmission.
Referring to Fig. 2 and Fig. 3 describe according to the specific embodiment of the present invention in the base station of communication system for the PUSCH configured with the subscriber equipment scheme associating PHICH being associated.
Fig. 2 illustrate a specific embodiment according to the present invention in the base station of communication system for the PUSCH configured with the subscriber equipment method flow diagram associating PHICH being associated.Fig. 3 illustrate a specific embodiment according to the present invention in the base station of communication system for the schematic diagram of the PUSCH configured with the subscriber equipment first device associating PHICH being associated.This first device 300 includes the first transmitting element 310 and the second transmitting element 320.
In step S210, the first transmitting element 310 indicates information to subscriber equipment sending zone, the region that its instruction described association PHICH is positioned at.
In step S220, the second transmitting element 310 sends association instruction information to subscriber equipment, the described association PHICH in its instruction region indicated by described region instruction information.
Additionally, base station can also include associative cell (not shown).Before step S210 and S220, this associative cell determines the PUSCH of subscriber equipment with which PHICH is associated.This associative cell can be arranged in first device 300, it is also possible to is separated with first device 300.
Referring to Fig. 4 and Fig. 5 describe according to the specific embodiment of the present invention in the subscriber equipment of communication system for configuring the scheme associating PHICH being associated of the PUSCH with described subscriber equipment.
Fig. 4 illustrate a specific embodiment according to the present invention in the subscriber equipment of communication system for the PUSCH configured with the described subscriber equipment method flow diagram associating PHICH being associated.Fig. 5 illustrate a specific embodiment according to the present invention in the subscriber equipment of communication system for the schematic diagram of the PUSCH configured with described subscriber equipment the second device associating PHICH being associated.This second device 500 includes the first reception unit 510, second and receives unit 520 and determine unit 530.
In step S410, first receives unit 510 receives the region instruction information from base station, the region that its instruction described association PHICH is positioned at.
In the step s 420, second receives unit 520 receives the association instruction information from base station, the described association PHICH in its instruction region indicated by described region instruction information.
In step S430, it is determined that unit 530 is according to the region instruction information received and the association instruction information received, it is determined that described association PHICH.
Above-mentioned zone will indicate information and above-mentioned association instruction information are further described below.
The region that instruction information instruction association PHICH in region is positioned at.As it has been described above, the PHICH that associates being associated with the PUSCH of subscriber equipment is likely located in the PHICH region left over, it is also possible to be arranged in ePHICH region.Thus, instruction information in region can indicate that the PHICH region or ePHICH region left over.Such as, region instruction information can take a bit, represents the PHICH region left over " 0 ", represents ePHICH region with " 1 ".
A specific embodiment according to the present invention, ePHICH region includes multiple ePHICH subregion.Such as, as it is shown in figure 1, ePHICH includes an ePHICH subregion and the 2nd ePHICH subregion.Thus, when associating PHICH and being arranged in ePHICH, region instruction information can indicate association PHICH that ePHICH subregion being positioned at further.Such as, region instruction information can take two bits, represents the PHICH region left over " 0 ", represents an ePHICH subregion with " 1 ", represents the 2nd ePHICH subregion with " 2 ".
Described association PHICH in association region indicated by instruction information indicating area instruction information.Indicate information, subscriber equipment can determine by region and associate the PHICH region being positioned at.In general, this region comprises multiple PHICH.Further, subscriber equipment is determined by associating instruction information, and association PHICH is which of multiple PHICH in the region indicated by region instruction information.
A specific embodiment according to the present invention, association instruction information can with implicit representation.Specifically, association instruction information includes the sum of the PHICH in the region indicated by region instruction information.Correspondingly, subscriber equipment, based on a predetermined rule, goes out to associate PHICH according to association instruction information inference.
Such as, subscriber equipment can calculate the index I of association PHICH by equation belowPHICH:
IPHICH=IPUSCHmodNPHICH(1)
Wherein, IPUSCHIt is the index of the PUSCH of subscriber equipment, NPHICHIt it is the sum of PHICH in the region indicated by region instruction information.Correspondingly, subscriber equipment, in step S430 (Fig. 4), first obtains the index I of PUSCHPUSCH, then pass through formula (1) and determine the index I of association PHICHPHICH。
Difference according to the PUSCH transmission means used, obtains the index I of PUSCHPUSCHMode be also likely to be different.
In one example, subscriber equipment calculates the index I of PUSCH by equation belowPUSCH:
IPUSCH=IPRB_RA+nDMRS(2)
Wherein, IPRBRAIt is the index for transmitting the Physical Resource Block of PUSCH (PhysicalResourceBlock, PRB), nDMRSIt it is the cyclic shift for transmitting the demodulated reference signal of PUSCH (DemodulationReferenceSignal, DMRS).
In another example, PUSCH uses CoMP transmission mode.Correspondingly, subscriber equipment can calculate the index I of PUSCH by equation belowPUSCH:
IPUSCH=IPRB_RA+IDMRS+nDMRS(3)
Wherein, IPRBRAIt is the index of Physical Resource Block for transmitting PUSCH, IDMRSIt is the index of the initialization sequence of demodulated reference signal for transmitting PUSCH, nDMRSIt it is the cyclic shift of demodulated reference signal.
Alternatively, subscriber equipment can calculate the index I of PUSCH by equation belowPUSCH:
IPUSCH=IPRB_RA+NDMRS×IDMRS+nDMRS(4)
Wherein, NDMRSIt it is the sum of the initialization sequence of demodulated reference signal.This mode advantageously reduces the probability of HARQ feedback conflict.
Another specific embodiment according to the present invention, association instruction information can with explicit representation.Specifically, association instruction information includes the mark of association PHICH.
Difference according to the PHICH transmission means used, the expression of the mark of PHICH is also likely to be different.
In one example, the PHICH in each PHICH region is divided into multiple groups, and the different PHICH in each PHICH group shares identical physical resource, and is separated from each other by orthogonal sequence (such as orthogonal Walsh code).Thus, the mark of association PHICH can be expressed as index to (Igroup, Iseq_RE_level), wherein IgroupIt is the index of PHICH group belonging to association PHICH, and Iseq_RE_levelIt it is the index of association orthogonal sequence corresponding to PHICH.
In another example, the PHICH group on each Physical Resource Block (PBR) is independent index.Thus, the mark of association PHICH can be expressed as index to (IPRB, Igroup, Iseq_RE_level), wherein IPRBIt it is the index of the Physical Resource Block at PHICH group place belonging to association PHICH.
Above-mentioned zone instruction information and the transmission mode of above-mentioned association instruction information are described more fully below.
Region instruction information can either send in semi-static (semi-static) mode, it is also possible to sends in dynamically (dynamic) mode.Similarly, association instruction information (sum of the PHICH that the region indicated by region instruction information comprises) of implicit expression also is able to send with semi-static mode or dynamical fashion.
A specific embodiment according to the present invention, in same signaling, simultaneously sending zone instruction information and implicit expression associates instruction information such that it is able to minimizing signaling consumption.
Fig. 6 illustrates the inclusion region instruction information of a specific embodiment according to the present invention and the schematic diagram of the cell associating instruction information.As shown in Figure 6, PHICH configuration cell ePHICH-Configinformationelement includes region instruction information ephich-Region and association instruction information ephich-Number.Region instruction information ephich-Region is defined as enumerated variable, its value PHICH PHICH region corresponding to leaving over, value ePHICH-OpenLoop is corresponding to using an ePHICH subregion of open-loop transmission, and value ePHICH-ClosedLoop is corresponding to using the 2nd ePHICH subregion of closed loop transmission.Association instruction information ephich-Number is integer variable, the sum of the PHICH that the region indicated by indicating area instruction information comprises.
Indicating information different from the association of implicit expression, explicit association instruction information comprises the mark of association PHICH, thus typically requires and sends in a dynamic fashion.
It is no matter in semi-static mode or in a dynamic fashion, all needs to carry out sending zone instruction information by corresponding signaling and associate instruction information.
When adopting semi-static mode, it is possible to use high-level signaling (such as RRC signaling, MAC control signaling, PBCH etc.) to come configuring area instruction information and/or association instruction information.
When adopting dynamical fashion, it is possible to come configuring area instruction information and/or association instruction information by following several different modes.
A specific embodiment according to the present invention, it is possible to define a new DCI (DownlinkControlInformation, Downlink Control Information) and come bearing area instruction information and/or association instruction information.Preferably, it is possible to sending zone instruction information and/or association instruction information together with ePDCCH dynamic configuration information, to reduce signaling consumption.For instance, it is possible to extension with inclusion region instruction information and/or is associated instruction information by the DCI comprising ePDCCH dynamic configuration information.
Another specific embodiment according to the present invention, it is possible to come bearing area instruction information and/or association instruction information by the uplink assignment dispatch of PUSCH.
Fig. 7 illustrates and is indicated information and/or the schematic diagram of association instruction information in the FDD system of a specific embodiment according to the present invention by the uplink assignment dispatch bearing area of PUSCH.With reference to Fig. 7, before PUSCH transmission, base station sends uplink assignment scheduling (ULgrantscheduling) signaling to subscriber equipment, and it includes the information indicating the resource of this PUSCH to distribute (ResourceAllocation).Additionally, also include region instruction information and/or association instruction information in this uplink assignment dispatch, it is for indicating the association PHICH associated with this PUSCH.Association PHICH carries HARQACK/NACK, and whether its instruction base station is successfully received subscriber equipment transmission on its PUSCH.As it is shown in fig. 7, in FDD system, comprise the uplink assignment dispatch associating PHICH configuration information (i.e. region instruction information and/or association instruction information) and this associate the interval that there are 8 subframes between PHICH.In lte-a system, the length of each subframe is 1ms.Thus, in FDD system, between the configuration information of PHICH and PHICH self, there is the delay of 8ms.This delay is acceptable.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described above limits, it is intended that all changes fallen into or fall in scope of the claims based on doctrine of equivalents included in the present invention.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.Furthermore, it is to be understood that " including " word is not excluded for other unit or step, odd number is not excluded for plural number.Multiple unit or the device stated in system claims can also be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and is not offered as any specific order.
Claims (11)
1. for the PUSCH configured with the subscriber equipment method associating PHICH being associated in the base station of communication system, wherein, described association PHICH is positioned at one of the PHICH region and ePHICH region left over, said method comprising the steps of:
Information is indicated, the region that its instruction described association PHICH is positioned to described subscriber equipment sending zone；
Sending association instruction information to described subscriber equipment, it indicates the described association PHICH in region indicated in described region instruction information；
Wherein, described association instruction information includes the sum of the PHICH in region indicated in described region instruction information.
2. method according to claim 1, wherein,
Described ePHICH region includes multiple ePHICH subregion；
When described region indicates information to indicate described ePHICH, described region instruction information indicates the described association PHICH subregion being positioned at further.
3. method according to claim 2, wherein, the plurality of ePHICH subregion includes an ePHICH subregion and the 2nd ePHICH subregion, uses open-loop transmission scheme in a described ePHICH subregion, uses closed loop transmission scheme in described 2nd ePHICH subregion.
4. method according to claim 1, wherein, instruction information in described region sends with semi-static mode or dynamical fashion.
5. method according to claim 1, wherein, described association instruction information sends with semi-static mode or dynamical fashion.
6. method according to claim 1, wherein, described association instruction information is carried by the uplink assignment dispatch of described PUSCH.
7. for configuring the method associating PHICH being associated of the PUSCH with described subscriber equipment in the subscriber equipment of communication system, wherein, described association PHICH is positioned at one of the PHICH region and ePHICH region left over, said method comprising the steps of:
A. receiving area instruction information, the region that its instruction described association PHICH is positioned at；
B. receiving association instruction information, it indicates the described association PHICH in region indicated in described region instruction information；And
C. according to the region instruction information received and the association instruction information received, it is determined that described association PHICH；
Wherein, described association instruction information includes the sum of the PHICH in region indicated in described region instruction information.
8. method according to claim 7, wherein,
Described step c includes:
C1. the index of described PUSCH is obtained；
C2. the index according to the sum of described PHICH and acquired described PUSCH, it is determined that the index of described association PHICH.
9. method according to claim 8, wherein, in described step c1, according to be used for transmit described PUSCH Physical Resource Block index, for transmit the index of the initialization sequence of the demodulated reference signal of described PUSCH, described demodulated reference signal cyclic shift index, obtain the index of described PUSCH.
10. for the PUSCH configured with the subscriber equipment first device associating PHICH being associated in the base station of communication system, wherein, described association PHICH is positioned at one of the PHICH region and ePHICH region left over, and described first device includes:
First transmitting element, for indicating information to described subscriber equipment sending zone, the region that its instruction described association PHICH is positioned at；
Second transmitting element, for sending association instruction information to described subscriber equipment, it indicates the described association PHICH in region indicated in described region instruction information；
Wherein, described association instruction information includes the sum of the PHICH in region indicated in described region instruction information.
11. for the PUSCH configured with described subscriber equipment second device associating PHICH being associated in the subscriber equipment of communication system, wherein, described association PHICH is positioned at one of the PHICH region and ePHICH region left over, and described second device includes:
First receives unit, indicates information for receiving area, the region that its instruction described association PHICH is positioned at；
Second receives unit, is used for receiving association instruction information, and it indicates the described association PHICH in region indicated in described region instruction information；And
Determine unit, for according to the region instruction information received and the association instruction information received, it is determined that described association PHICH；
Wherein, described association instruction information includes the sum of the PHICH in region indicated in described region instruction information.
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| CN101252422A (en) * | 2008-03-20 | 2008-08-27 | 中兴通讯股份有限公司 | Method for allocating physical mixing retransmission indicating chanel |
| CN102202400A (en) * | 2011-05-31 | 2011-09-28 | 电信科学技术研究院 | Instruction and processing method and device for resource occupancy mode |
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| CN101252422A (en) * | 2008-03-20 | 2008-08-27 | 中兴通讯股份有限公司 | Method for allocating physical mixing retransmission indicating chanel |
| CN102202400A (en) * | 2011-05-31 | 2011-09-28 | 电信科学技术研究院 | Instruction and processing method and device for resource occupancy mode |
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