CN103120005A - Method of interference management for radio link monitoring in HetNet - Google Patents
Method of interference management for radio link monitoring in HetNet Download PDFInfo
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- CN103120005A CN103120005A CN201080069277XA CN201080069277A CN103120005A CN 103120005 A CN103120005 A CN 103120005A CN 201080069277X A CN201080069277X A CN 201080069277XA CN 201080069277 A CN201080069277 A CN 201080069277A CN 103120005 A CN103120005 A CN 103120005A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
A method of interference management for radio link monitoring in a heterogeneous network is provided to solve the problem of unnecessary radio link failure in the traditional radio link monitoring mechanism. The method comprises creating a list of interfering cells from which positions of common reference signals in the interfering cells can be acquired, and muting resource elements whose positions are corresponding to the common reference signals of the interfering cells in the list. Further, an apparatus for implementing the interference management method for radio link monitoring in a heterogeneous network is provided.
Description
Technical field
The present invention relates to the mechanism to the interference management of the monitoring of the radio link in heterogeneous network (HetNet) system.
Background of invention
Heterogeneous network is disposed by the deployment that spreads all over macrocell layout placement low power nodes (LPN) and is formed.The low power nodes that several types is arranged.For example, Femto cell is the cellulor base station that generally is designed to be used in family or small enterprise.It is connected to service provider's network via broadband (for example DSL or cable).Service in Femto cell permission service provider propagation chamber covers, and particularly script is limited or disabled place in access.Say from 3GPP, Long Term Evolution (LTE) Femto cell is called as the eNode B(HeNB of family).Generally, HeNB does not have to other Femto cell or any grand eNodeB(MeNB) direct interface (for example, the X2 interface in 3GPP).
Yet, in the time of in being deployed in same channel, grand and femto subscriber equipment (UE) are had serious interference problem.For example, when grand UE is near Femto cell, disturb signal from macrocell from the signal of femto cell base station.Under these circumstances, grand UE can serve macrocell report radio bearer setup complete (RLF) to it.According to current 3GPP standard for example 3GPP TS36.133, to requirement and 3GPP TS36.213 " the evolved universal terrestrial wireless access (E-UTRA) of the support of provided for radio resources management; Physical layer procedures ", UE should be based on cell specific reference signal (for example, the public reference signal in LTE (CRS)) monitoring downlink quality, in order to survey the downlink radio quality of Serving cell.The CRS of macrocell can be received by grand UE together with other interference signal from adjacent Femto cell and other contiguous macrocell.In some cases, Signal Interference and Noise Ratio (SINR) is lower than threshold value, and this will make again UE report link failure.Yet, if the almost blank subframe that some Inter-Cell Interference Coordination technology for example propose in 3GPP R1-103561---improves the control reliability---and is used, may disturb or have insignificant interference during actual transmissions in the severe jamming situation.The monitoring of conventional wireless current source road does not reflect actual channel quality during actual transmissions, and the unnecessary declaration that therefore may produce radio bearer setup complete.
Some interference management methods of radio link monitoring have been proposed to be used for.For example, the method for the symbol level time migration between HeNB and MeNB; And proposed HeNB in 3GPP R1-104659 the RE that the CRS of grand eNB uses carried out the quiet method of Resource Unit (RE)---the assessment that control channel during cochannel CSG disposes is coordinated.Yet, the femto UE(HUE that HeNB serves) and need to know that the position of quiet RE reduces the performance reduction.
Summary of the invention
In order to solve the problem of the unnecessary radio bearer setup complete in the monitoring mechanism of conventional wireless current source road, the invention provides the method to the interference management of the monitoring of the radio link in heterogeneous network, it comprises the following steps:
Create the list of interfered cell, from the position that this list can be obtained the public reference signal interfered cell; And
Make the corresponding Resource Unit of public reference signal of the interfered cell in its position and list quiet.
Preferably, the list of interfered cell creates based on fixing or configurable threshold value.
Preferably, the step of the list of establishment interfered cell comprises:
The down link signal of measuring neighbor cell also compares signal and the threshold value of each neighbor cell; And
Its signal is placed in the list of interfered cell greater than the residential quarter of threshold value.
Preferably, the list of interfered cell comprises physical district ID or the public reference signal pattern information of interfered cell.
Preferably, Resource Unit is quiet is triggered by the higher level signaling.
Preferably, Resource Unit is quiet by the measurement triggering in up link.
Preferably, if the list of interfered cell is not empty, Resource Unit is quiet always opens.
Preferably, the method comprises that also the list with interfered cell sends to subscriber equipment.
Preferably, the list of interfered cell sends to subscriber equipment by system information block message.
Preferably, subscriber equipment is version-10(Release-10) or rear version-10(post Release-10) subscriber equipment, and the method also comprises:
Based on the list of interfered cell to the quiet execution rate-matched of Resource Unit; And
List based on interfered cell is gone coupling in subscriber equipment place's execution speed.
Preferably, subscriber equipment is version-8/9 subscriber equipment, and the method also comprises:
List based on interfered cell is bored a hole to the quiet executing data of Resource Unit.
Preferably, Resource Unit is quiet is performed in the Physical Downlink Control Channel district.
In addition, the invention provides the device for the interference management that the radio link of heterogeneous network is monitored, it comprises:
The list creating unit, it is configured to create the list of interfered cell, from the position that this list can be obtained the public reference signal interfered cell; And
The quiet unit of Resource Unit, it is configured to make the corresponding Resource Unit of public reference signal of the interfered cell in its position and list quiet.
Preferably, the list creating cell location becomes the list that creates interfered cell based on fixing or configurable threshold value.
Preferably, the list creating cell location becomes:
The down link signal of measuring neighbor cell also compares signal and the threshold value of each neighbor cell; And
Its signal is placed in the list of interfered cell greater than the residential quarter of threshold value.
Preferably, device also comprises:
The list transmitting element, it is configured to the list of interfered cell is sent to subscriber equipment.
Preferably, the list transmitting element is configured to by system information block message, the list of interfered cell be sent to subscriber equipment.
Preferably, device also comprises:
The rate-matched unit, it is configured in the situation that subscriber equipment is version-10 or rear version-10 subscriber equipment based on the list of interfered cell to the quiet execution rate-matched of Resource Unit.
Preferably, device also comprises:
The data punch unit, it is configured in the situation that subscriber equipment is version-8/9 subscriber equipment based on the list of interfered cell to the quiet executing data perforation of Resource Unit.
Preferably, device is used in the eNode B of family equipment.
Use technical solution provided by the present invention, near the grand UE HeNB will observe the more down link of good quality from its macrocell, because the part of CRS signal is no longer disturbed by HeNB.Therefore, for this grand UE, the chance of RLF will be lower.
Brief description of drawings
Fig. 1 illustrates and uses the exemplary HeNB RE of a macrocell in list L quiet, and this macrocell has two antenna ports;
Fig. 2 illustrates Rel-10 or rear Rel-10HUE is carried out the quiet flow process of RE;
Fig. 3 illustrates Rel-8/9HUE is carried out the quiet flow process of RE;
Fig. 4 illustrates the structure for the device of the interference management that the radio link of HetNet is monitored.
The preferred embodiment of the present invention
The basic thought to the interference management method of radio link monitoring that provides in the present invention is, HeNB makes some data channel transmission in data channel transmission quiet, the CRS of the macrocell that the position of these data channel transmission may be disturbed by HeNB corresponding to its signal.The method also provides and produces HeNB and HUE is adoptable and the mechanism of the information of the quiet RE position of synchronizeing with HeNB and HUE.
By the preferred embodiment of the present invention, the method is described below in conjunction with accompanying drawing.
Step 1:HeNB measures and sends signals to its service UE (HUE).
In this step, HeNB should measure down link signal and survey all possible adjacent macro cell by its corresponding physical district ID (PCI).Note, this can use so-called network intercepting pattern (NLM) or complete at the HeNB place at embedded descending link receiver place.The signal of the macrocell that each detects will compare for contrast threshold value Q.Those PCI greater than the macrocell signal of threshold value Q will be stored in list L.This list will comprise zero or a plurality of PCI, and wherein the quantity of entry depends on the value of Q.Threshold value Q will be via measuring and/or calculating by pre-defined.In addition, can revise this threshold value Q via the higher level signaling from the core network to HeNB.Alternatively, list can comprise the CRS pattern information.Note, measurement and list generate and will preferably complete before any UE adds Femto cell.
Then, when any UE added Femto cell, HeNB sent to UE with list L.For example, it is inner that this list L can be placed in system information block (SIB) message.
Step 2:HeNB RE is quiet.
There is the triggering of several types can trigger the quiet event of HeNB RE.A kind of triggering is from the higher level signaling, for example the signaling from the core network to HeNB.This generally relates to grand UE and enters Femto cell and its measurement report is got back to grand eNB, makes macrocell, and and then makes core network know that specific UE is near Femto cell.Another triggering is to measure by the HeNB in up link.To send data and/or control information near the aggressive mode victim UE HeNB on up link, and these ul transmissions can be surveyed by HeNB.In the situation that victim UE relatively near HeNB, will be relatively low to the path loss of HeNB.Therefore, may be high at the SINR of the reference signal that receives at HeNB place for UE, and will be reliable in the detection at HeNB place.Can be at 3GPP TR36.921, the FDD eNoDe B(HeNB of family from the details of the detection of the ul transmissions of the grand UE of victim) radio frequency (RF) requires to analyze in (version-9) v9.0.0 and finds.If list L is not empty, quiet (that is, do not need trigger) that also can always open of the RE of HeNB.
In case be triggered or always open, HeNB will make the Resource Unit (RE) at same position place of those CRS signals of all macrocells in being included in list L quiet.Note, according to the LET standard, provide PCI, the CRS position is known.Further note that for example Physical Downlink Control Channel (PDCCH) and data channel Physical Downlink Shared Channel (PDSCH) for example of control channel is arranged in LET.For the purpose of back compatible, RE quiet is limited to those in the PDSCH district.
Fig. 1 illustrates and uses the exemplary HeNB RE of a macrocell in list L quiet, and this macrocell has two antenna ports.
This quiet result is, near HeNB and the grand UE of its Serving cell in list L will observe the more down link of good quality from its macrocell because the part of CRS signal (in the PDSCH district) is no longer disturbed by HeNB now.Therefore, for this grand UE, the chance of RLF will be than not having the quiet situation of HeNB to bend down.
The performance of Femto cell (for example, from the downlink throughput aspect) may reduce, because some RE resources are wasted.May have at compromise between grand UE RLF and Femto cell performance accurately.Can control this via the value of threshold value Q trades off.For example, if the value of Q relatively large (little) will have the macrocell of less (more) in list L; Conversely, the quiet waste of the RE in Femto cell is with less (more), and the performance of Femto cell is with better (poorer).
If list L is not empty, the part of the RE of any UE of serving of this HeNB service Femto cell that will know it in making the PDSCH district is quiet.In addition, because HUE has the information of list L when adding Femto cell, rate-matched can be completed (for example, 3GPP Rel-10 or following version UE can support this function), in order to reduce the quiet caused loss of throughput of some RE in Femto cell.If UE(is for example, Rel-8/9UE) supporting rate matching feature not, HeNB those RE of this UE that may bore a hole simply.
Fig. 2 illustrates Rel-10 or rear Rel-10HUE is carried out the quiet flow process of RE, and it comprises the following steps:
201.HeNB create the list L that disturbs macrocell based on threshold value Q;
202.HeNB via higher layer message SIB message Rel-10HUE notice list L after the Rel-10/ of all its services for example;
203. when HeNB sent to HUE with data, HeNB made corresponding to the RE of the CRS RE of the interference macrocell in list L quiet, and HeNB is to the quiet execution rate-matched of RE;
204. by obtaining from list L, the position of quiet RE is known in HUE, and each HUE carries out its data receiver according to the position of quiet RE and speed is gone coupling.
Fig. 3 illustrates Rel-8/9HUE is carried out the quiet flow process of RE, and it comprises the following steps:
301.HeNB create the list L that disturbs macrocell based on threshold value Q;
302. when HeNB sent to Rel-8/9HUE with data, HeNB made corresponding to the RE of the CRS RE of the interference macrocell in list L quiet, and HeNB is to the quiet executing data perforation of RE;
303. the position of quiet RE is not known in Rel-8/9HUE, and each executing data reception in these UE, tentation data is sent out in those quiet RE.
In addition, the invention provides for the device of realization at the interference management method of the radio link monitoring of HetNet.Preferably, use this device in HeNB.As shown in Figure 4, device 400 comprises list creating unit 401 and RE quiet unit 402.
The list creating cell location becomes based on threshold value Q to create list L.The quiet cell location of RE becomes to make its position quiet corresponding to the Resource Unit of the CRS of the macrocell in list L.
Preferably, device 400 also comprises list transmitting element 403, rate-matched unit 404 and data punch unit 405.
The list transmitting element is configured to for example by SIB message, list L be sent to UE.The rate-matched cell location become in the situation that UE be Rel-10 or rear Rel-10UE based on list L to the quiet execution rate-matched of RE.The data punch unit is configured in the situation that UE is Rel-8/9UE based on list L to the quiet execution speed perforation of RE.
According to above-described preferred implementation, other distortion and enhancing are possible.The top detailed description that should be understood that the preferred embodiment of the present invention is not the restriction of protection scope of the present invention that claim is limited.
Industrial usability
The present invention is applicable to 3GPP LTE/LTE-A heterogeneous network system, and it is comprised of the UE that grand eNB and HeNB and grand eNB or HeNB serve.Use the present invention, near the grand UE HeNB will observe down link than good quality from its macrocell, because the part of CRS signal is no longer disturbed by HeNB.Therefore, for this grand UE, the chance of RLF will be lower.
Claims (20)
1. the method to the interference management of the monitoring of the radio link in heterogeneous network, comprise the following steps:
Create the list of interfered cell, from the position that described list can be obtained the public reference signal described interfered cell; And
Make the corresponding Resource Unit of described public reference signal of the described interfered cell in its position and described list quiet.
2. the method for claim 1, wherein the described list of interfered cell creates based on fixed threshold or configurable threshold value.
3. method as claimed in claim 2, the step that wherein creates the list of interfered cell comprises:
Measure the down link signal of neighbor cell and signal and the described threshold value of each neighbor cell compared; And
Its signal is placed in the described list of interfered cell greater than the residential quarter of described threshold value.
4. the method for claim 1, wherein the described list of interfered cell comprises physical district ID or the public reference signal pattern information of described interfered cell.
5. the method for claim 1, wherein said Resource Unit is quiet to be triggered by the higher level signaling.
6. the method for claim 1, wherein said Resource Unit is quiet by the measurement triggering in up link.
7. the method for claim 1, if wherein the described list of interfered cell is not empty, described Resource Unit is quiet always opens.
8. the method for claim 1 also comprises:
The described list of interfered cell is sent to subscriber equipment.
9. method as claimed in claim 8, wherein the described list of interfered cell sends to described subscriber equipment by system information block message.
10. method as claimed in claim 8, wherein said subscriber equipment are version-10 or rear version-10 subscriber equipment, and described method also comprises:
Based on the described list of interfered cell to the quiet execution rate-matched of Resource Unit; And
Described list based on interfered cell is gone coupling in described subscriber equipment place's execution speed.
11. method as claimed in claim 8, wherein said subscriber equipment are version-8/9 subscriber equipmenies, and described method also comprises:
Described list based on interfered cell is bored a hole to the quiet executing data of Resource Unit.
12. the method for claim 1, wherein said Resource Unit is quiet to be performed in the Physical Downlink Control Channel district.
13. the device for the interference management that the radio link of heterogeneous network is monitored comprises:
The list creating unit, it is configured to create the list of interfered cell, from the position that described list can be obtained the public reference signal described interfered cell; And
The quiet unit of Resource Unit, it is configured to make the corresponding Resource Unit of described public reference signal of the described interfered cell in its position and described list quiet.
14. device as claimed in claim 13, wherein said list creating cell location one-tenth creates the described list of interfered cell based on fixed threshold or configurable threshold value.
15. device as claimed in claim 14, wherein said list creating cell location becomes:
Measure the down link signal of neighbor cell and signal and the described threshold value of each neighbor cell compared; And
Its signal is placed in the described list of interfered cell greater than the residential quarter of described threshold value.
16. device as claimed in claim 13 also comprises:
The list transmitting element, it is configured to the described list of interfered cell is sent to subscriber equipment.
17. device as claimed in claim 16, wherein said list transmitting element are configured to by system information block message, the described list of interfered cell be sent to described subscriber equipment.
18. device as claimed in claim 16 also comprises:
The rate-matched unit, it is configured in the situation that described subscriber equipment is version-10 or rear version-10 subscriber equipment based on the described list of interfered cell to the quiet execution rate-matched of Resource Unit.
19. device as claimed in claim 16 also comprises:
The data punch unit, it is configured in the situation that described subscriber equipment is version-8/9 subscriber equipment based on the described list of interfered cell to the quiet executing data perforation of Resource Unit.
20. device as claimed in claim 13, wherein said device are used in the eNode B of family equipment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/077566 WO2012045200A1 (en) | 2010-10-03 | 2010-10-03 | Method of interference management for radio link monitoring in hetnet |
Publications (2)
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| CN103120005A true CN103120005A (en) | 2013-05-22 |
| CN103120005B CN103120005B (en) | 2016-10-12 |
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| CN201080069277.XA Active CN103120005B (en) | 2010-10-03 | 2010-10-03 | Method to the interference management that the radio link in HetNet is monitored |
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| Country | Link |
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| WO (1) | WO2012045200A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103874220B (en) * | 2012-12-12 | 2017-04-26 | 华为技术有限公司 | Scheduling method, receiving method and device |
| WO2014175638A1 (en) * | 2013-04-23 | 2014-10-30 | Lg Electronics Inc. | Method and apparatus for controlling data transmission in wireless communication system |
| WO2018016828A1 (en) * | 2016-07-17 | 2018-01-25 | 엘지전자 주식회사 | Method and user equipment for receiving downlink signal, and method and base station for transmitting downlink signal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137237A (en) * | 2006-08-30 | 2008-03-05 | 株式会社泛泰 | Method for inter-cell interference mitigation for a mobile communication system |
| CN101494898A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference between districts |
| CN101741442A (en) * | 2008-11-20 | 2010-06-16 | 华为技术有限公司 | Method for confirming resource mapping in cooperative multicast transmission, network equipment and system |
| CN101741793A (en) * | 2008-11-04 | 2010-06-16 | 华为技术有限公司 | Method, system and equipment for transmitting uplink reference signals |
| CN101800589A (en) * | 2009-02-06 | 2010-08-11 | 中兴通讯股份有限公司 | Pilot frequency processing method, device and mobile terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4676529B2 (en) * | 2005-03-14 | 2011-04-27 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Method and apparatus for improved handover by muting interfering nodes |
| WO2010104321A2 (en) * | 2009-03-09 | 2010-09-16 | 엘지전자 주식회사 | Method for transmitting a reference signal in a downlink mimo system |
-
2010
- 2010-10-03 WO PCT/CN2010/077566 patent/WO2012045200A1/en active Application Filing
- 2010-10-03 CN CN201080069277.XA patent/CN103120005B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137237A (en) * | 2006-08-30 | 2008-03-05 | 株式会社泛泰 | Method for inter-cell interference mitigation for a mobile communication system |
| CN101494898A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference between districts |
| CN101741793A (en) * | 2008-11-04 | 2010-06-16 | 华为技术有限公司 | Method, system and equipment for transmitting uplink reference signals |
| CN101741442A (en) * | 2008-11-20 | 2010-06-16 | 华为技术有限公司 | Method for confirming resource mapping in cooperative multicast transmission, network equipment and system |
| CN101800589A (en) * | 2009-02-06 | 2010-08-11 | 中兴通讯股份有限公司 | Pilot frequency processing method, device and mobile terminal |
Non-Patent Citations (1)
| Title |
|---|
| ZTE: "Interference coordination for control channels under non-CA based heterogeneous deployments", 《3GPP TSG RAN WG1 MEETING #62, R1-104566》, 27 August 2010 (2010-08-27) * |
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| Publication number | Publication date |
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| CN103120005B (en) | 2016-10-12 |
| WO2012045200A1 (en) | 2012-04-12 |
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