CN102238664A - Method and system for rejecting radio resource connection reestablish during base station handover - Google Patents
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- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a method and system for rejecting a radio resource connection reestablish during base station handover, wherein the method involves UE (User Equipment), a source Node B (eNB), and a target eNB involved during handover. The method comprises the steps: after rejecting an RRC (Radio Resource Control) connection reestablish request of the UE during a handover resource preparation stage, the target eNB timely sends a message to notify the source eNB that the RRC connection reestablish of the UE is rejected; and the source eNB releases the resources of the UE after acquiring the notification from the target eNB. The invention ensures that the source eNB can quickly release resources of UE after a target eNB rejects the RRC connection reestablish request of the UE, thus improving the use rate of resources.
Description
Technical field
The invention belongs to wireless telecommunications handoff technique field, relate in particular to Long Term Evolution (LTE, Long TermEvolution) evolution base station (eNB, Evolution NodeB) switches the method and apparatus of refusal Radio Resource connection re-establishment (Radio Resource Connection Reestablish) in the system.
Background technology
Information interaction between the eNB has two kinds of interface modes usually, and a kind of is directly to carry out information interaction by X2 interface, as shown in Figure 1; Another kind then is earlier by S1 interface and Mobility Management Entity (MME, Mobility Management Entity) communication, and realizes information interaction between eNB indirectly by this MME, as shown in Figure 2.Therefore, the switching between the eNB also just comprises X2 interface switching (being called for short X2 switches) and S1 interface switching (being called for short the S1 switching).
Switch for X2, switch source (abbreviation source) according to subscriber equipment (UE, when measurement report judgement User Equipment) need be switched, can send Handover Request order to switching target side (abbreviation target) eNB by X2 interface, after target eNB is received this Handover Request order, can prepare in order to finish the resource of switching this time at this eNB.
Switch for S1, when source eNB switches according to the measurement report of UE judgement needs, by the S1 interface after MME sends Handover Required message, MME sends Handover Request message by the S1 interface to target eNB, notification target eNB prepares to switch, so that the resource that the target eNB preparation is switched.
No matter be to switch or switch for S1 for X2, when target eNB was prepared switchable resource, UE may rebuild upright request owing to reasons such as link failure send Radio Resource connection (RRC, RadioResource Connection) to target eNB; At this moment, can't carry out the RRC reconstruction because target eNB is being prepared switchable resource upright, just can send RRC to UE and connect foundation refusal (RRC ConnectionReestablish Reject) message; After UE receives this message, (IDLE) state that can enter the free time.If it is unusual that target eNB takes place when continuing to prepare switchable resource, can send HandoverPrepare Failure message to source eNB, after source eNB receives this information, can end current switching, carry out the rollback of resource.Above-mentioned processing procedure as shown in Figure 3.
In the above-mentioned processing procedure, though after step 306 source eNB receives the HandoverPrepare Failure that target eNB sends rollback the UE resource, but still there is such problem: because UE has entered the IDLE state, but source eNB can think that also UE is in connection status (Connected), caused an inactive UE being arranged in source eNB side, promptly the resource of this UE is suspended, can only wait for that this source eNB detects this UE inertia (being User Inactive) this moment, and this is relevant with the timer that is used for this detection that this eNB is provided with.If it is longer that timer is provided with the time, as 30 minutes or longer, can make this eNB in time not discharge the UE resource and cause the wasting of resources, thereby be unfavorable for the access of other UE, especially when big traffic multi-user, will directly influence user's use and for the satisfaction of system.
Summary of the invention
Technical problem to be solved by this invention provide a kind of base station switch in the method and system of Radio Resource connection reconstruction refusal, can prepare switchable resource and after the RRC of UE rebuild the request refusal, the source eNB of making in time discharged the UE resource in target eNB.
In order to solve the problems of the technologies described above, the invention provides Radio Resource connection (RRC) reestablishment rejected method in a kind of evolution base station (eNB) switching, source eNB and the target eNB of relate to subscriber equipment (UE), switching, this method comprises:
After described target eNB was refused the RRC connection reconstruction request of described UE in the switchable resource preparatory stage, in time send the RRC connection reconstruction refusal that UE has taken place the described source eNB of message informing.
Further, this method also comprises:
Described source eNB discharges the resource of this UE after knowing the notice of described target eNB.
Further, this method also relates to Mobility Management Entity (MME), the described switching that switches to X2 interface between eNB; Before the step of carrying out described method, also comprise:
In the wireless network layer reason of X2 interface agreement, increase the cause value of failure: RRC connection re-establishment refusal.
Further, this method specifically comprises:
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switching to described source eNB and prepare failed message, and the cause value of failure is made as described RRC connection re-establishment refusal;
The cause value that described source eNB prepares to fail in the failed message according to described switching is described RRC connection re-establishment refusal, sends the UE context to described MME and discharges request message, and request is to the contextual release of UE;
Described MME receives after described UE context discharges request message and returns the context release command to source eNB;
After described source eNB receives the described context release command of MME, discharge the relevant resource of described UE.
Further, this method also relates to Mobility Management Entity (MME), the described switching that switches to S1 interface between eNB and MME; Before the step of carrying out described method, also comprise:
In the wireless network layer reason of S1 interface protocol, increase the cause value of failure: RRC connection re-establishment refusal.
Further, this method specifically comprises:
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switch failure information to described MME, and the cause value of failure is made as described RRC connection re-establishment refusal;
After described MME receives this switch failure information, be that described RRC connection re-establishment refusal sends the release command of UE context to described source eNB according to cause value;
Described source eNB receives the related resource that discharges this UE after the release command of described UE context.
In order to solve the problems of the technologies described above, the invention provides a kind of evolution base station (eNB) switch in Radio Resource connect (RRC) reestablishment rejected be, comprise subscriber equipment (UE), source eNB and the target eNB switched, wherein:
Described UE is used for detecting link when unusual at handoff procedure, sends the request of RRC connection reconstruction to the switching cell of described target eNB;
Described target eNB, be used for the switchable resource preparatory stage with the RRC connection reconstruction request of described UE refusal after, it is reestablishment rejected in time to send the RRC that UE has taken place the described source eNB of message informing;
Described source eNB is used for discharging the resource of this UE after knowing the notice of described target eNB.
Further, this system also comprises Mobility Management Entity (MME);
If the described switching that switches to X2 interface between eNB then increases the cause value of failing: RRC connection re-establishment refusal in the wireless network layer reason of X2 interface agreement;
If the described switching that switches to S1 interface between eNB and MME then increases the cause value of failing: RRC connection re-establishment refusal in the wireless network layer reason of S1 interface protocol.
Further, the described switching that switches to X2 interface between eNB;
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switching to described source eNB and prepare failed message, and the cause value of failure is made as described RRC connection re-establishment refusal;
The cause value that described source eNB prepares to fail in the failed message according to described switching is described RRC connection re-establishment refusal, send the UE context to described MME and discharge request message, and after receiving the context release command that described MME returns, discharge the relevant resource of described UE;
Described MME receives after described UE context discharges request message and returns the context release command to source eNB.
Further, the described switching that switches to S1 interface between eNB and MME;
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switch failure information to described MME, and the cause value of failure is made as described RRC connection re-establishment refusal;
After described MME receives this switch failure information, be that described RRC connection re-establishment refusal sends the release command of UE context to described source eNB according to cause value;
Described source eNB receives the related resource that discharges this UE after the release command of described UE context.
Refusal RRC rebuild upright method and system during the eNB that the present invention provides for the LTE system switched, because the target eNB of switching is after the RRC of switchable resource preparatory stage refusal UE rebuilds request, in time send message informing source eNB UE request reconstruction RRC refusal has taken place, guaranteed source eNB rapid release UE resource thus, improve the utilance of resource, thereby under big traffic multi-user scene, promoted user experience, increased the satisfaction that the user uses.
Description of drawings
Fig. 1 is the schematic diagram that directly carries out information interaction between eNB by X2 interface;
Fig. 2 is by carrying out the schematic diagram of information interaction indirectly with the S1 interface of MME between eNB;
Fig. 3 is the reestablishment rejected processing procedure figure of RRC during existing realization eNB switches;
Fig. 4 is the flow chart of reestablishment rejected method one embodiment of RRC during realization of the present invention eNB switches;
Fig. 5 is the flow chart of reestablishment rejected another embodiment of method of RRC during realization of the present invention eNB switches.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical scheme of the present invention is at length set forth.The embodiment that below exemplifies only is used for description and interpretation the present invention, and does not constitute the restriction to technical solution of the present invention.The protection range of technical solution of the present invention is when being as the criterion with accompanying Claim.
Radio Resource connected (RRC) reestablishment rejected method embodiment during evolution base station provided by the invention (eNB) switched, and comprising:
After the target eNB of switching was refused the RRC request of rebuilding of subscriber equipment (UE) in the switchable resource preparatory stage, UE has taken place the source eNB that in time sends the message informing switching asked RRC reestablishment rejected.
After source eNB is known the notice of target eNB, in time discharge the resource of this UE.
The present invention has provided following concrete execution mode again at switching of the X2 between eNB or S1 switching respectively according to said method embodiment.
Embodiment 1
Present embodiment has represented that eNB is carrying out X2 when switching, after target eNB receives that when preparing switchable resource the RRC of UE rebuilds upright request and refused, and the processing procedure that the source eNB of making can rapid release UE resource, flow process as shown in Figure 4 comprises the steps:
Step 402, target eNB are carried out the preparation of switchable resource after receiving this Handover Request message;
Step 405, target eNB send to switch to source eNB prepares failure (Handover PrepareFailure) message, and wherein Shi Bai cause value is a RRC connection re-establishment refusal (RRC ConnectionReestablish Reject);
Owing to this cause value not still in the wireless network layer reason (Radio Network LayerCause) of 36.423 agreements of X2 interface, so need increase this cause value therein, source, the target side switched in order to notice took place UE request RRC is rebuild upright refusal in the resource preparatory stage.
Step 407, MME sends context release command (Initial Ue Context ReleaseCommand) to source eNB;
Step 408 after source eNB receives this order, is carried out the release of UE related resource at once.
Carry out in the X2 handoff procedure at above-mentioned eNB, because after target eNB has received that in the resource set-up procedure RRC of UE rebuilds upright request message and sends RRC connection re-establishment refuse information, the upright refusal of RRC reconstruction has taken place in notification source eNB immediately, so can be so that source eNB rapid release UE related resource, do not need its etc. user's inertia to be detected (User Inactive), both improve the utilance of user's access rate and resource thus, also alleviated the cpu resource occupancy of source eNB.
Embodiment 2
Present embodiment has been represented eNB in carrying out the S1 handoff procedure, after target eNB receives that when preparing switchable resource the RRC of UE rebuilds upright request and refused, and the processing procedure that the source eNB of making can rapid release UE resource, flow process as shown in Figure 5 comprises the steps:
Step 501, source eNB judgement need carrying out S1 switches, and utilizes the S1 interface to send Handover Required message to MME;
Step 502, MME sends Handover Request message to target eNB, and indicating target eNB prepares resource and switches;
Step 503, target eNB are carried out the preparation of switchable resource after receiving this Handover Request message;
Step 504, UE detects situations such as link is unusual, has sent RRC connection re-establishment request (RRC Connection Reestablish Request) message to the switching cell of target eNB;
Step 505, can't to carry out the reconstruction of RRC link upright because of preparing resource for target eNB, refuses (RRC Connection Reestablish Reject) message so reply the RRC connection re-establishment to UE;
Step 506, target eNB sends Handover Failure message to MME, and cause value is RRC connection re-establishment refusal (RRC Connection Reestablish Reject);
Because therefore this cause value not still among the Radio Network Layer Cause of 36.413 agreements of S1 interface need increase this cause value therein.
Step 507 after MME receives this Handover Failure message, is that RRC rebuilds upright refusal to source eNB transmission UE context release command (Initial Ue Context ReleaseCommand) according to cause value, and indication source eNB discharges the UE resource;
Step 508, source eNB receives that this order back discharges this UE resource.
So far, the UE resource has obtained discharging timely, does not need source eNB to wait for the detection of user's inertia (UserInactive), has both improved user's access rate and resource utilization thus, has also alleviated the cpu resource occupancy of source eNB.
The present invention is directed to said method embodiment, Radio Resource connection (RRC) reestablishment rejected system embodiment in evolution base station (eNB) switching correspondingly is provided, comprise subscriber equipment (UE), source eNB and the target eNB switched, wherein:
UE is used for detecting link when unusual at handoff procedure, sends RRC to the switching cell of target eNB and rebuilds request message;
Target eNB is used for behind the RRC reconstruction request refusal of preparation switchable resource stage with UE, and UE has taken place the source eNB that in time sends the message informing switching asks RRC reestablishment rejected;
Source eNB after being used to know the notice of target eNB, in time discharges the resource of this UE.
The present invention has provided following concrete execution mode again at switching of the X2 between eNB or S1 switching respectively according to said system embodiment.
Switch for the X2 between eNB, this system embodiment also comprises Mobility Management Entity (MME):
Target eNB is being prepared the switchable resource stage to UE answer RRC connection re-establishment refusal (RRCConnection Reestablish Reject) message, send to switch to source eNB simultaneously and prepare failure (Handover Prepare Failure) message, wherein Shi Bai cause value is a RRC connection re-establishment refusal (RRC Connection Reestablish Reject);
After source eNB receives this Handover Prepare Failure message, be RRC connection re-establishment refusal according to cause value, send the UE context to MME immediately and discharge request (Initial Ue ContextRelease Request) message, request is to the contextual release of UE;
MME is used for sending context release command (Initial Ue Context ReleaseCommand) to source eNB;
After source eNB receives this order of MME, carry out the release of UE related resource at once.
Switch for the X2 between eNB, this system embodiment also comprises Mobility Management Entity (MME):
Target eNB is being prepared the switchable resource stage to UE answer RRC connection re-establishment refusal (RRCConnection Reestablish Reject) message, send Handover Failure message to MME simultaneously, cause value is RRC connection re-establishment refusal (RRC Connection Reestablish Reject);
MME, be used to receive this Handover Failure message after, send UE context release command (Initial Ue Context ReleaseCommand) for RRC connection re-establishment refusal to source eNB according to cause value, indication source eNB discharges the UE resource;
Source eNB receives that this order back of MME discharges this UE resource.
Explanation by above-mentioned embodiment, when can being to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet embodiment and appended diagram only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Claims (10)
1. Radio Resource connected (RRC) reestablishment rejected method during an evolution base station (eNB) switched, source eNB and the target eNB of relate to subscriber equipment (UE), switching, and this method comprises:
After described target eNB was refused the RRC connection reconstruction request of described UE in the switchable resource preparatory stage, in time send the RRC connection reconstruction refusal that UE has taken place the described source eNB of message informing.
2. in accordance with the method for claim 1, it is characterized in that, also comprise:
Described source eNB discharges the resource of this UE after knowing the notice of described target eNB.
3. in accordance with the method for claim 2, it is characterized in that, also relate to Mobility Management Entity (MME), the described switching that switches to X2 interface between eNB; Before the step of carrying out described method, also comprise:
In the wireless network layer reason of X2 interface agreement, increase the cause value of failure: RRC connection re-establishment refusal.
4. in accordance with the method for claim 3, it is characterized in that, specifically comprise:
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switching to described source eNB and prepare failed message, and the cause value of failure is made as described RRC connection re-establishment refusal;
The cause value that described source eNB prepares to fail in the failed message according to described switching is described RRC connection re-establishment refusal, sends the UE context to described MME and discharges request message, and request is to the contextual release of UE;
Described MME receives after described UE context discharges request message and returns the context release command to source eNB;
After described source eNB receives the described context release command of MME, discharge the relevant resource of described UE.
5. in accordance with the method for claim 2, it is characterized in that, also relate to Mobility Management Entity (MME), the described switching that switches to S1 interface between eNB and MME; Before the step of carrying out described method, also comprise:
In the wireless network layer reason of S1 interface protocol, increase the cause value of failure: RRC connection re-establishment refusal.
6. in accordance with the method for claim 5, it is characterized in that, specifically comprise:
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switch failure information to described MME, and the cause value of failure is made as described RRC connection re-establishment refusal;
After described MME receives this switch failure information, be that described RRC connection re-establishment refusal sends the release command of UE context to described source eNB according to cause value;
Described source eNB receives the related resource that discharges this UE after the release command of described UE context.
7. Radio Resource connected (RRC) reestablishment rejected system during an evolution base station (eNB) switched, and comprised subscriber equipment (UE), source eNB and the target eNB switched, wherein:
Described UE is used for detecting link when unusual at handoff procedure, sends the request of RRC connection reconstruction to the switching cell of described target eNB;
Described target eNB, be used for the switchable resource preparatory stage with the RRC connection reconstruction request of described UE refusal after, it is reestablishment rejected in time to send the RRC that UE has taken place the described source eNB of message informing;
Described source eNB is used for discharging the resource of this UE after knowing the notice of described target eNB.
8. according to the described system of claim 7, it is characterized in that, also comprise Mobility Management Entity (MME);
If the described switching that switches to X2 interface between eNB then increases the cause value of failing: RRC connection re-establishment refusal in the wireless network layer reason of X2 interface agreement;
If the described switching that switches to S1 interface between eNB and MME then increases the cause value of failing: RRC connection re-establishment refusal in the wireless network layer reason of S1 interface protocol.
9. according to the described system of claim 7, it is characterized in that the described switching that switches to X2 interface between eNB;
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switching to described source eNB and prepare failed message, and the cause value of failure is made as described RRC connection re-establishment refusal;
The cause value that described source eNB prepares to fail in the failed message according to described switching is described RRC connection re-establishment refusal, send the UE context to described MME and discharge request message, and after receiving the context release command that described MME returns, discharge the relevant resource of described UE;
Described MME receives after described UE context discharges request message and returns the context release command to source eNB.
10. according to the described system of claim 7, it is characterized in that the described switching that switches to S1 interface between eNB and MME;
Behind the RRC connection reconstruction request refusal of described target eNB with described UE, send switch failure information to described MME, and the cause value of failure is made as described RRC connection re-establishment refusal;
After described MME receives this switch failure information, be that described RRC connection re-establishment refusal sends the release command of UE context to described source eNB according to cause value;
Described source eNB receives the related resource that discharges this UE after the release command of described UE context.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010170899.3A CN102238664B (en) | 2010-04-23 | 2010-04-23 | Method and system for rejecting radio resource connection reestablish during base station handover |
| PCT/CN2010/077186 WO2011130990A1 (en) | 2010-04-23 | 2010-09-21 | Method, system and device for rejecting reestablishment of radio resource connection during base station handover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010170899.3A CN102238664B (en) | 2010-04-23 | 2010-04-23 | Method and system for rejecting radio resource connection reestablish during base station handover |
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| Publication Number | Publication Date |
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| CN102238664A true CN102238664A (en) | 2011-11-09 |
| CN102238664B CN102238664B (en) | 2014-10-22 |
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| CN201010170899.3A Expired - Fee Related CN102238664B (en) | 2010-04-23 | 2010-04-23 | Method and system for rejecting radio resource connection reestablish during base station handover |
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| WO (1) | WO2011130990A1 (en) |
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| CN102413584A (en) * | 2010-09-20 | 2012-04-11 | 电信科学技术研究院 | Method and equipment for managing PDN (public data network) connection |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413584A (en) * | 2010-09-20 | 2012-04-11 | 电信科学技术研究院 | Method and equipment for managing PDN (public data network) connection |
| CN102413584B (en) * | 2010-09-20 | 2015-01-28 | 电信科学技术研究院 | Method and equipment for managing PDN (public data network) connection |
| CN103108403A (en) * | 2011-11-10 | 2013-05-15 | 中兴通讯股份有限公司 | Cross-base-station radio resource control (RRC) connection and re-establishment method and system |
| CN103108403B (en) * | 2011-11-10 | 2017-12-22 | 深圳市中洲科技有限公司 | Across base station RRC connection reconstructions method and system |
| CN104853390A (en) * | 2015-05-28 | 2015-08-19 | 武汉邮电科学研究院 | Failure handling method for S1 handover preparation phase of LTE system |
| CN109309968A (en) * | 2017-07-28 | 2019-02-05 | 华硕电脑股份有限公司 | Restore the method and apparatus of radio resource control connection in wireless communication system |
| CN109309968B (en) * | 2017-07-28 | 2022-03-08 | 华硕电脑股份有限公司 | Method and apparatus for recovering radio resource control connection in wireless communication system |
| CN110431913A (en) * | 2017-09-21 | 2019-11-08 | 华为技术有限公司 | Connection management method, user equipment, core network entity and system |
| CN110431913B (en) * | 2017-09-21 | 2022-02-25 | 华为技术有限公司 | Connection management method, user equipment, core network entity and system |
| US11291069B2 (en) | 2017-09-21 | 2022-03-29 | Huawei Technologies Co., Ltd. | Connection management method, user equipment, core network entity, and system |
| CN109951879A (en) * | 2017-12-21 | 2019-06-28 | 中国移动通信集团设计院有限公司 | A kind of penalty method and evolution base station of ESRVCC handoff preparation phase |
| CN109951879B (en) * | 2017-12-21 | 2021-04-23 | 中国移动通信集团设计院有限公司 | Punishment method for ESRVCC switching preparation stage and evolution base station |
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| WO2011130990A1 (en) | 2011-10-27 |
| CN102238664B (en) | 2014-10-22 |
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