CN105636240A - Wireless network controller, method and device for removing links in core network, and controller - Google Patents
Wireless network controller, method and device for removing links in core network, and controller Download PDFInfo
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- CN105636240A CN105636240A CN201410583721.XA CN201410583721A CN105636240A CN 105636240 A CN105636240 A CN 105636240A CN 201410583721 A CN201410583721 A CN 201410583721A CN 105636240 A CN105636240 A CN 105636240A
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Abstract
The invention provides a wireless network controller, a method and a device for removing links in a core network, and a wireless network controller. The method comprises the steps of receiving an Iu connection release order issued by a core network, wherein the Iu connection release order contains a self-defining value as a cause value thereof; and removing the Iu connection inside the core network according to the Iu connection release order. According to the technical scheme of the invention, the Iu connection inside the core network can be removed only upon receiving the Iu connection release order issued by the core network, wherein the Iu connection release order contains a self-defined cause value. Therefore, the states of users on the wireless network side and the core network side are kept consistent. Meanwhile, the failed re-calling problem after the call drop at the UTRAN side can be solved.
Description
Technical field
The present invention relates to wireless technical field, particularly relate to remove between a kind of radio network controller and core net the method for link, device and radio network controller.
Background technology
In routine optimization works, find a kind of new access failure fault: in wireless side owing to the reason disconnection of wireless such as strong jamming, weak covering connects or after call drop, again dial CS voice call and can receive CMServiceReject (CM service-denial signaling) that core net issues and be refused by core net. after acquiring substantial amounts of fault signaling, by analysing in depth wireless network and core network protocols, tentatively it is decided to be failure cause: UE (subscriber equipment) has discharged original wireless connections due to the reason such as strong jamming, weak covering, but before RNC (radio network controller) discharges talk timer time-out, RNC be will not by this information notification core net (CN), thus the Iu still retaining this UEMobileID (subscriber equipment moves ID) between core net with RNC is connected, if UE is before RNC discharges talk timer time-out, continue to initiate calling, the CMServiceRequest (call management service/CS audio call) reported to core net can carry identical MobileID, so that core net it is thought that one repeat application (before this UEMobileID Iu connect also do not discharge, core net think still keep connect), this CMServiceRequest is refused with the signaling that cause value is the CMServiceReject of Messagenotcompatiblewiththeprotocolstate (message and protocol status are incompatible), thus causing the generation of CS voice call access failure situation.
This fault is born existence in 3G system, basic reason is that wireless network protocol does not have clear and definite standard process with core network protocols, the UE state of this wireless network side in particular cases Yu core-network side is united, the situation making this wireless network side and core-network side UE state inconsistent happens occasionally, and result in CS voice call access failure.
As long as " RNC discharges talk timer ", more than 0, is just permanently present the probability of this fault. And in the network of reality, " RNC discharges talk timer " is set larger than 0 by almost all of operation commercial city, only there is dividing of size. If " RNC discharges talk timer " is set to greatly, then again rises after call drop and exhale the probability that access failure occurs high; It is set to little, then again rises after call drop and exhale the probability that access failure occurs low. In any case, it is all the probability that there is access failure.
Summary of the invention
The technical problem to be solved in the present invention is to provide between a kind of radio network controller and core net and removes the method for link, device and radio network controller, solves again to act, after UTRAN (UMTS land radio access web) side call drop, the problem exhaling failure in prior art.
In order to solve above-mentioned technical problem, the embodiment of the present invention provides a kind of method removing link between radio network controller and core net, including:
What reception core net issued carries the Iu Connection Release instruction that cause value is a self-defining value;
It is connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
Wherein, the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes:
The report of the Radio Link Failure that receiving node B reports;
Report according to described Radio Link Failure is determined when carrying out speech business with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value;
Receive core net and carry, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value.
Wherein, said method also includes:
Report according to described Radio Link Failure is determined when not carrying out speech business with the node B terminal being connected, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
Wherein, the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes:
Receive core net to ask according to the call management service of terminal to report, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
Wherein, said method also includes:
Receive core net to ask according to the call management service of described terminal to report, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued.
Wherein, said method also includes:
Receive core net to ask according to the call management service of described terminal to report, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued.
Present invention also offers the device removing link between a kind of radio network controller and core net, including:
First receiver module, carries, for what receive that core net issues, the Iu Connection Release instruction that cause value is a self-defining value;
Remove module, for being connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
Wherein, described first receiver module includes:
First receives unit, for the report of the receiving node B Radio Link Failure reported;
Report unit, when carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value;
Second receives unit, carries, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value for receiving core net.
Wherein, said apparatus also includes:
Issue module, when not carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
Wherein, described first receiver module includes:
3rd receives unit, ask according to the call management service of terminal to report for receiving core net, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
Wherein, said apparatus also includes:
Second receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued.
Wherein, said apparatus also includes:
3rd receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued.
Present invention also offers a kind of radio network controller, including: remove the device of link between above-mentioned radio network controller and core net.
Having the beneficial effect that of the technique scheme of the present invention:
In such scheme, described radio network controller and the method removing link between core net by receive that core net issues carry the Iu Connection Release instruction that cause value is a self-defining value after only remove and be connected with the Iu between core net, make wireless network side consistent with the User Status of core-network side, again act, after solving UTRAN (UMTS land radio access web) side call drop, the problem exhaling failure.
Accompanying drawing explanation
Fig. 1 is the method step schematic diagram removing link between the radio network controller of the embodiment of the present invention and core net;
Fig. 2 is the typical fault signalling diagram one of citing in the embodiment of the present invention;
Fig. 3 is the typical fault signalling diagram two of citing in the embodiment of the present invention;
Fig. 4 is the typical fault signalling diagram three of citing in the embodiment of the present invention;
Fig. 5 is that in the embodiment of the present invention, UE selects new community schematic diagram;
Fig. 6 is the CMServiceRequest schematic diagram that in the embodiment of the present invention, core net refusal UE initiates in new community;
Fig. 7 is that existing RNC reports IuReleaseRequest to the signalling diagram triggered after CN;
The method schematic diagram two of link is removed between the radio network controller of Fig. 8 embodiment of the present invention and core net;
The method schematic diagram three of link is removed between the radio network controller of Fig. 9 embodiment of the present invention and core net;
The apparatus structure schematic diagram of link is removed between the radio network controller of Figure 10 embodiment of the present invention and core net.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Again act, after the present invention is directed to UTRAN in existing technology (UMTS land radio access web) side call drop, the problem exhaling failure, it is provided that a kind of method removing link between radio network controller and core net, as it is shown in figure 1, include:
Step 11: what reception core net issued carries the Iu Connection Release instruction that cause value is a self-defining value;
Step 12: be connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
Self-defining value prioritizing selection described in the embodiment of the present invention is remove-MobileID (removes-move ID).
Described radio network controller and the method removing link between core net that the embodiment of the present invention provides by receive that core net issues carry the Iu Connection Release instruction that cause value is a self-defining value after only remove and be connected with the Iu between core net, make wireless network side consistent with the User Status of core-network side, again act, after solving UTRAN (UMTS land radio access web) side call drop, the problem exhaling failure.
The embodiment of the present invention provides two kinds of counter-measures for practical situations, the first: the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes: the report of the Radio Link Failure that receiving node B reports; Report according to described Radio Link Failure is determined when carrying out speech business with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value; Receive core net and carry, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value.
Further, described method also includes: determine when not carrying out speech business with the node B terminal being connected according to the report of described Radio Link Failure, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
The second: the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes: receive core net and ask according to the call management service of terminal to report, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
Further, described method also includes: receives core net and asks according to the call management service of described terminal to report, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued; Receive core net to ask according to the call management service of described terminal to report, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued. Wherein, the first instruction is identical with the second instruction, it is possible to be enter authentication that call management service sets up in process, safe mode command, the instruction such as authentication.
The method removing link between the described the radio network controller below embodiment of the present invention provided and core net is illustrated.
Typical fault signaling as shown in Figure 2, sequence number 9-10:PagingResponse (page response) can be seen that this is an incoming call. Resolve this signaling, it can be seen that the MobileID carried is as shown in Figure 3.
In the diagram, sequence number 43-46: voice call is connected. Sequence number 47:NodeB (node B) will trigger and report RadioLinkFailureIndication (Radio Link Failure instruction) to RNC after detecting that the time of continuous uplink loss exceedes certain threshold values. Each producer is different for triggering the definition of RadioLinkFailureIndication intervalometer. Sequence number 48:NodeB reports RadioLinkFailureIndication to trigger RNC and issues RadioLinkActivationCommand (wireless link-activation instruction) to NodeB, and instruction NodeB closes downlink.
Owing to the downlink of network side is switched off, cause end-probing less than downlink, thus causing the descending failure of terminal judges, stop at the transmission on old link, UE is made to pass through cell update (CellUpdate), reselecting wireless quality community more preferably, this community is likely to be cell-of-origin, it is also possible to be other community. In present case, what UE selected is exactly other community (CellID=29223), as shown in Figure 5, wherein, sequence number 97-98:UE initiates voice call service in new community (CellID=29223), sending CMServiceRequest, cause value is OriginalConversationalCall (original talk calling), and the MobileID (92232494) carried is the same with PagingResponse above. Sequence number 101-102: core net refuses this CMServiceRequest. The reason of CMServiceReject is: Messagenotcompatiblewiththeprotocolstate, as shown in Figure 6.
Concrete reason is analyzed: after uplink loss, and the intervalometer (being actually call drop intervalometer) of RNC release call, under existing network configures, is 15.25 seconds. Calculation for this call drop intervalometer of different producers is different. Nevertheless, be all set larger than 0, from 7,8 seconds to tens seconds have.
After RNC instruction NodeB stopping downlink (RadioLinkActivationCommand), the call reality of UE stops, time point 10:00:12:821 (sequence number: 48).
UE cell update again initiates CMServiceRequest (CS audio call), time point 10:00:19:371 (sequence number: 97) to other community.
Between two time points, (call drop and again initiate between CS audio call) is separated by about 7 seconds, is far smaller than RNC and discharges talk timer 15.25 seconds. Before timer expiry, RNC will not initiate IuReleaseRequest (Iu releasing request), and therefore the Iu connection between RNC and CN remains in that. After core net receives CMServiceRequest, core net finds that its MobileID carried probably already exists Iu and connects, this CMServiceRequest will be refused, the reason of refusal is Messagenotcompatiblewiththeprotocolstate, thus causing the access failure of CS voice call.
The embodiment of the present invention is on the basis of 3GPP protocol specification, it is provided that a kind of new algorithm flow, goes to avoid the generation of this type of fault, and perception connected in the voice promoting client.
First, the Cause (cause value) of a self-defined new IuReleaseRequest. According to 9.2.1.4 in 3GPPTS25.413 (RANAP) specification, the cause value of IuReleaseRequest is divided into standard (standard) and non-standard (non-standard) two kinds, wherein sequence number 1-128,257-512 are standard, and sequence number 129-256 is non-standard, it is possible to leave main equipment producer oneself definition for.
The embodiment of the present invention selects wherein 1 sequence number (protocol specification sequence number 256 is obsolete) in 129-256, a newly-increased Cause value, it is defined as: remove-MobileID (self-defining value in the embodiment of the present invention), then for carrying the IuReleaseRequest that cause value the is remove-MobileID signaling process providing corresponding.
According to existing procedure, after RNC reports IuReleaseRequest to CN, meeting first triggering CN issues and completes taking out stitches of Iu connection between IuReleaseCommand, RNC and CN; Then RNC issues RRCConnectionRelease (RRC Connection Release), completes RRC and connect dismounting between UE and RNC; Last RNC issues RadioLinkDeletionRequest (wireless link removes request), and instruction NodeB completes the dismounting of physical link, as shown in Figure 7.
The signaling process that the embodiment of the present invention provides is, if RNC reports carries the reason carried in IuReleaseRequest, the CN that cause value the is remove-MobileID IuReleaseCommand issued also for remove-MobileID. After RNC receives the IuReleaseCommand that the CN cause value issued is remove-MobileID, RNC does not carry out the associative operation that RRC connects and physical link is removed, and only completes the Iu dismounting connected between RNC and CN.
The embodiment of the present invention provides two kinds concrete algorithm for the definition of two above signaling and flow process, the first, as shown in Figure 8:
After step 81:RNC receives the NodeB RadioLinkFailure reported, it is judged that whether UE carries out CS speech business. It is enter step 82; No, enter step 85.
Step 82:RNC is to the CN IuReleaseRequest reporting cause value to be remove-MobileID.
Step 83:CN issues to RNC and carries the IuReleaseCommand that cause value is remove-MobileID.
Carry out Iu between step 84:RNC and CN and connect dismounting, but RNC does not carry out the associative operation that RRC connects and physical link is removed, and subsequently, before call drop timer expiry, even if UE initiates CMServiceRequest again, refuses without by CN.
Step 85:RNC issues RadioLinkActivationCommand to NodeB.
Step 86:NodeB is after receiving the RNC RadioLinkActivationCommand issued, and deexcitation wireless link, triggers UE initiation cell update flow process or call drop (line) timer expiry triggers call drop (line).
The second, as shown in Figure 9:
Step 91:CN receives the UE CMServiceRequest reported, (CMServiceRequest is that UE issues CN to resolve MobileID and EstablishmentCause therein, middle through RNC, but RNC is simply middle does a transparent transmission, is left intact).
Step 92:CN judges whether whether the Iu connection of this MobileID exists. It is enter step 93; No, enter step 96.
Step 93:CN determines whether CS voice call from EstablishmentCause. It is enter step 94; No, enter step 96.
Step 94:CN issues, to RNC, the IuReleaseCommand that cause value is remove-MobileID.
Carry out Iu between step 95:RNC and CN and connect dismounting, but RNC does not carry out the associative operation that RRC connects and physical link is removed.
Step 96: carry out normal CMService (call management service/CS audio call) Establishing process.
To sum up, the embodiment of the present invention defines one and carries the IuReleaseRequest message that cause value is remove-MobileID, and provide corresponding signaling process for it: if RNC reports carries the reason carried in IuReleaseRequest, the CN that cause value the is remove-MobileID IuReleaseCommmand issued also for remove-MobileID. After RNC receives the IuReleaseCommand that the CN cause value issued is remove-MobileID, the Iu dismounting connected is completed between RNC and CN, but RNC does not carry out the associative operation that RRC connects and physical link is removed, again rise after successfully solving UTRAN side call drop and exhale unsuccessfully fault, there is higher innovative value and practical value, and the scheme range of application of embodiment of the present invention offer is extremely wide, it is possible to be applied to all 3G networks, such as WCDMA, TD-SCDMA etc.
In order to solve above-mentioned technical problem, the embodiment of the present invention additionally provides the device removing link between a kind of radio network controller and core net, as shown in Figure 10, and including:
First receiver module, carries, for what receive that core net issues, the Iu Connection Release instruction that cause value is a self-defining value;
Remove module, for being connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
Self-defining value prioritizing selection described in the embodiment of the present invention is remove-MobileID (removes-move ID).
Described radio network controller and the device removing link between core net that the embodiment of the present invention provides by receive that core net issues carry the Iu Connection Release instruction that cause value is a self-defining value after only remove and be connected with the Iu between core net, make wireless network side consistent with the User Status of core-network side, again act, after solving UTRAN side call drop, the problem exhaling failure.
The embodiment of the present invention provides two kinds of counter-measures for practical situations, the first: described first receiver module includes: first receives unit, for the report of the receiving node B Radio Link Failure reported; Report unit, when carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value; Second receives unit, carries, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value for receiving core net.
Further, described device also includes: issue module, when not carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
The second: described first receiver module includes: the 3rd receives unit, ask according to the call management service of terminal to report for receiving core net, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
Further, described device also includes: the second receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued; 3rd receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued.
Wherein, the described of method removing link between above-mentioned radio network controller and core net realizes embodiment all suitable in the embodiment of the device removing link between this radio network controller and core net, also can reach identical technique effect.
In order to solve above-mentioned technical problem, the embodiment of the present invention additionally provides a kind of radio network controller, including: remove the device of link between above-mentioned radio network controller and core net.
It should be noted that the described of device removing link between above-mentioned radio network controller and core net realizes embodiment all suitable in the embodiment of this radio network controller, identical technique effect also can be reached.
Above-described is the preferred embodiment of the present invention; should be understood that the ordinary person for the art; without departing under principle premise of the present invention, it is also possible to making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (13)
1. the method removing link between radio network controller and core net, it is characterised in that including:
What reception core net issued carries the Iu Connection Release instruction that cause value is a self-defining value;
It is connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
2. the method for claim 1, it is characterised in that the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes:
The report of the Radio Link Failure that receiving node B reports;
Report according to described Radio Link Failure is determined when carrying out speech business with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value;
Receive core net and carry, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value.
3. method as claimed in claim 2, it is characterised in that described method also includes:
Report according to described Radio Link Failure is determined when not carrying out speech business with the node B terminal being connected, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
4. the method for claim 1, it is characterised in that the step carrying the Iu Connection Release instruction that cause value is a self-defining value that reception core net issues includes:
Receive core net to ask according to the call management service of terminal to report, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
5. method as claimed in claim 4, it is characterised in that described method also includes:
Receive core net to ask according to the call management service of described terminal to report, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued.
6. method as claimed in claim 4, it is characterised in that described method also includes:
Receive core net to ask according to the call management service of described terminal to report, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued.
7. the device removing link between radio network controller and core net, it is characterised in that including:
First receiver module, carries, for what receive that core net issues, the Iu Connection Release instruction that cause value is a self-defining value;
Remove module, for being connected according to the Iu between described Iu Connection Release instruction dismounting and core net.
8. device as claimed in claim 7, it is characterised in that described first receiver module includes:
First receives unit, for the report of the receiving node B Radio Link Failure reported;
Report unit, when carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, to the Iu connection release request that core net reports cause value to be described self-defining value;
Second receives unit, carries, according to what described Iu connection release request issued, the Iu Connection Release instruction that cause value is described self-defining value for receiving core net.
9. device as claimed in claim 8, it is characterised in that described device also includes:
Issue module, when not carrying out speech business for determining according to the report of described Radio Link Failure with the node B terminal being connected, wireless link-activation instruction is issued to described node B, so that described node B deexcitation wireless link, and then trigger described terminal and initiate cell update or the intervalometer that goes offline time-out can trigger and go offline.
10. device as claimed in claim 7, it is characterised in that described first receiver module includes:
3rd receives unit, ask according to the call management service of terminal to report for receiving core net, determining that the Iu of Mobile sign in this request connects that to have there is and set up reason be described terminal when carrying out speech business, what issue carries the Iu Connection Release instruction that cause value is described self-defining value.
11. device as claimed in claim 10, it is characterised in that described device also includes:
Second receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that when in this request, the Iu connection of Mobile sign is absent from, the first instruction setting up call management service issued.
12. device as claimed in claim 10, it is characterised in that described device also includes:
3rd receiver module, asks according to the call management service of described terminal to report for receiving core net, it is determined that setting up reason in this request is not described terminal when carrying out speech business, the second instruction setting up call management service issued.
13. a radio network controller, it is characterised in that including: radio network controller as described in any one of claim 7 to 12 and remove the device of link between core net.
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| CN103826327A (en) * | 2014-01-28 | 2014-05-28 | 大唐移动通信设备有限公司 | Method and apparatus of communication service releasing |
| CN104113862A (en) * | 2014-07-14 | 2014-10-22 | 中国联合网络通信集团有限公司 | Dropped call counting method and device |
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