CN101965009A - Method and system for processing message exception of network wireless link control layer - Google Patents
Method and system for processing message exception of network wireless link control layer Download PDFInfo
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Abstract
The invention discloses a method and a system for processing message exception of a network side wireless link control layer. The method comprises the following steps of: when a network control plane discovers an exception that message retransmission times exceeds the maximum retransmission times on a signaling/data wireless borne network transmitting end RLC protocol entity of user equipment UE, judging whether the UE has executed the wireless parameter reallocation process due to the exception, if so, initiating the intracell switching process for the UE, otherwise, initiating the wireless parameter reallocation process for the UE. Compared with the prior art, the method solves the problem of the exception that the retransmission times exceeds the maximum retransmission times on the network side, avoids poor user experience caused by releasing the service or the whole UE, and ensures the sustainability and quality of the service.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of in LTE (Long Term Evolution, Long Term Evolution) system, network side radio controlling links layer message abnormity processing method and system.
Background technology
RLC (Radio Link Control, Radio Link control) protocol layer is a sublayer of layer 2 (L2) in the Radio interface protocols stack of LTE, is positioned on MAC (Media Access Control, the medium access control) layer.The rlc protocol layer is used to user and control data that segmentation is provided and retransmits professional.The function of rlc protocol layer comprises link control, encapsulation and reorganization, cascade, user data transmission, error correction, protocol error detection and reparation etc.Each rlc protocol entity is by RRC (Radio Resource Control, Radio Resource control) protocol configuration and operate with three kinds of patterns, be respectively: transparent mode (Transparent Mode, abbreviation TM), Unacknowledged Mode (Unacknowledged Mode, abbreviation UM), affirmation mode (Acknowledged Mode is called for short AM).
Wherein, affirmation mode is meant that transmitter side transmits after adding the necessary control protocol overhead on the high level data, and guarantees to be delivered to peer-entities.Because have ARQ (Automatic Repeat Request, repeat requests automatically) ability,, then notify the RLC entity of opposite end to retransmit this PDU if RLC receives wrong RLC PDU (Protocol Data Unit, protocol Data Unit).
Though the RLC transmitting terminal entity under the AM pattern allows to retransmit, for the consideration to the practical application scene, it is unpractical unrestrictedly retransmitting.In 36.322 agreements, illustrate that the rlc protocol layer answers configuration parameter maxRetxThreshold (maximum retransmission), each RLCPDU for transmitting terminal, all keep a counter RETX_COUNT, when the part of this PDU or this PDU need retransmit, then RETX_COUNT added 1, in case RETX_COUNT reaches maxRetxThreshold, then notify the upper strata, i.e. the network controls face.
The network controls face is received the processing policy of taking after the above-mentioned notice, does not stipulate in 36.322 agreements.In 36.331 agreements, spell out UE (User Equipment, subscriber equipment) side network controls face reaches this maxRetxThreshold if detect the rlc protocol layer, then can think Radio Link Failure (Radio Link Failure), the corresponding UE side that is treated to is initiated RRC connection reconstruction flow process (RRCconnection re-establishment).But equity, how network side eNodeB (E-UTRAN NodeB, Node B) network controls face handles after the rlc protocol layer reaches maxRetxThreshold if detecting, clearly do not stipulate its implementation in agreement.
The reason that triggering RLC key-course protocol entity message transmissions causes repeatedly retransmitting unusually mainly comprises following two classes:
1. incorrect because of the parameter of RLC configuration, long or too short setup time setup time such as the Status Disable timer of giving receiver side to the poll timer of transmitter side configuration, all can cause retransmitting;
2. abominable because of the bottom link circuit condition, such as disturbing than under the serious situation, message is lost eating dishes without rice or wine, and can trigger repeatedly retransmitting equally.
Wherein, the unreasonable allocation that has its source in of first kind reason; The second class reason then is the relatively poor performance of connection status of eating dishes without rice or wine.But this two classes problem all is not to be the mistake of " irreversible, irrecoverable ", not necessarily needs directly to discharge UE or certain business.
RRC connection reconstruction flow process must be initiated from the UE side, therefore can't adopt same processing policy in the eNodeB side, realization to this part is handled, eNodeB has very big flexibility, and available strategy comprises: discharge whole UE, discharge to trigger maximum retransmission business, do not process and only carry out miscue etc. on the backstage.But from user's angle, the release business can cause customer service to interrupt; Discharge UE and then can directly cause terminal to re-access, make user experience not good; But do not let alone to retransmit if do not process, only provide alarm at background interface, then may cause professional the connection to be in relatively poor state all the time, it is poorer that in fact the user is experienced.
Therefore, be necessary to provide a kind of solution when surpassing maximum retransmission at wireless chain control layer protocol entity message transmissions number of times.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of network side radio controlling links layer message abnormity processing method and system, solves the abnormal problem that causes wireless chain control layer protocol entity message transmissions number of times to surpass maximum retransmission at network side.
In order to address the above problem, the invention provides a kind of network side radio controlling links layer message abnormity processing method, comprising:
When the network controls face is found to occur on the network side transmitting terminal Radio Link control rlc protocol entity of signaling/Data Radio Bearer of user equipment (UE) the message number of retransmissions and is surpassed maximum retransmission unusual, therefore class is unusual and carried out wireless parameter reprovision process to judge this UE, if do not carry out, then this UE is initiated wireless parameter reprovision process; Otherwise, this UE is initiated intra-cell changes process.
Further, described method also comprises:
Described transmitting terminal rlc protocol entity reports described network controls face unusually with described when the signaling/Data Radio Bearer that detects described UE the message number of retransmissions occurs and surpasses maximum retransmission unusual.
Further, described method also comprises:
Described network controls face receive described unusual after, whether have described UE because of the described reprovision record that unusually cause, if having, judge that then described UE is because of the described unusual wireless parameter reprovision process of carrying out if checking; If no, then judge described UE not because of the described unusual wireless parameter reprovision process of carrying out, and when described UE is initiated wireless parameter reprovision process, increase the reprovision record of described UE.
Further, described method also comprises:
After finishing described intra-cell and changing, whether described transmitting terminal rlc protocol entity detects described UE again and also exists the message number of retransmissions to surpass the unusual of maximum retransmission, if still exist, then discharge the unusual signaling/Data Radio Bearer of appearance, the radio resource control RRC that perhaps discharges described UE connects.
Further, described wireless parameter reprovision is meant, reconfigures a kind of or its combination in any in the following parameters of the rlc protocol entity that unusual signaling/Data Radio Bearer correspondence occurs: Status Disable timer, poll timer, pollByte, pollPDU parameter.
Further, the rlc protocol entity of described correspondence comprises: described transmitting terminal rlc protocol entity and UE side joint receiving end rlc protocol entity.
Further, described wireless parameter reprovision also comprises: the threshold value that reconfigures described maximum retransmission.
The present invention also provides a kind of network side radio controlling links layer message abnormity processing system, comprises that the control unit, wireless parameter reprovision unit and the intra-cell that are positioned at the network controls face change the unit, wherein:
Described control unit is used for, when occurring the message number of retransmissions on the network side transmitting terminal Radio Link control rlc protocol entity of signaling/Data Radio Bearer of finding user equipment (UE) and surpass maximum retransmission unusual, therefore class is unusual and carried out wireless parameter reprovision process to judge this UE, if do not carry out, then send the reprovision order to described wireless parameter reprovision unit; Otherwise the transmission intra-cell is changed order to described intra-cell and is changed the unit;
Described wireless parameter reprovision unit is used for, and according to the reprovision order that receives described UE is initiated wireless parameter reprovision process;
Described intra-cell is changed the unit and is used for, and changes order according to the described intra-cell that receives described UE initiation intra-cell is changed process.
Further, described system also comprises the described transmitting terminal rlc protocol entity that links to each other with described control unit,
Described transmitting terminal rlc protocol entity is used for, and when the signaling/Data Radio Bearer that detects described UE the message number of retransmissions occurs and surpasses maximum retransmission unusual, reports described control unit unusually with described.
Further, described control unit is used for, and whether after receiving described unusual that described transmitting terminal rlc protocol entity reports, checking has described UE because of the described reprovision record that causes unusually, if have, judge that then described UE is because of the described unusual wireless parameter reprovision process of carrying out; If no, then judge described UE not because of the described unusual wireless parameter reprovision process of carrying out, and when described UE is initiated wireless parameter reprovision process, increase the reprovision record of described UE.
Further, described intra-cell is changed the unit and also is used for, and after finishing described intra-cell and changing, sends handover success message to described control unit;
Described control unit also is used for, receive described handover success message after, if still receive described unusual that described transmitting terminal rlc protocol entity reports, then discharge and unusual signaling/Data Radio Bearer occurs, the RRC that perhaps discharges described UE connects.
Further, described wireless parameter reprovision unit comprises the wireless parameter reprovision that described UE initiates, reconfigure a kind of or its combination in any in the following parameters of the rlc protocol entity that unusual signaling/Data Radio Bearer correspondence occurs: Status Disable timer, poll timer, pollByte, pollPDU parameter, and the threshold value of maximum retransmission;
Wherein, the rlc protocol entity of described correspondence comprises: described transmitting terminal rlc protocol entity and UE side joint receiving end rlc protocol entity.
The present invention is by the processing of define grid side when the message that detects the triggering of wireless chain control layer protocol entity is unusual above maximum retransmission, avoid keeping professional continuation and quality of service as much as possible because of discharging not good user experience professional or that whole UE causes.
Adopt method of the present invention, compared with prior art, not directly to discharge UE or business, but cause number of retransmissions to surpass the unusual problem of maximum retransmission in the network side solution, under the prerequisite of non-interrupting service, guarantee the harmless transmission of data as far as possible, obtain higher-quality connection, improved user experience.
Description of drawings
Fig. 1 is the method flow schematic diagram of the embodiment of the invention;
Fig. 2 is that the parameter renegotiation prescription formula of passing through that the present invention uses example one solves the message number of retransmissions and surpasses the unusual schematic flow sheet of maximum retransmission;
Fig. 3 is that the present invention uses the solution message number of retransmissions of example two above the unusual schematic flow sheet of maximum retransmission;
Fig. 4 is the schematic block diagram of the network side radio controlling links layer message abnormity processing system of the embodiment of the invention.
Embodiment
Basic thought of the present invention is: at causing wireless chain control layer protocol entity message transmissions number of times to surpass the unusual different reasons of maximum retransmission, provide the corresponding solution at network side.
For the rlc protocol entity wireless parameter arrangement abnormalities that may exist, can carry out the parameter reprovision and solve unusual rlc protocol entity occurring by RRC.
But for should then can't solving by the wireless parameter reprovision unusually that the bottom link causes.At present, in 36.300 agreements, the situation at change of Access Layer encryption key and encryption parameter COUNT repetition has defined a kind of special switching flow, and promptly intra-cell is changed.Intra-cell change of current journey is not as striding the sub-district switching, is to judge the on-position by the signal power of measurement report; And may be when metrical information does not change, the switching that in same sub-district, takes place.With regard to user's face, the RRC connection reconstruction flow process of intra-cell change of current journey and UE side is similar, need not to interrupt any business, only is the switching of channel and frequency, thereby still can obtain quality of connection preferably when some channel quality is bad.
Therefore, the present invention proposes: when the rlc protocol entity that detects any data/Signaling Radio Bearer of certain UE when eNodeB side chain of command occurs surpassing the phenomenon of maximum retransmission, by initiating the wireless parameter reprovision, or intra-cell change of current journey reconstruction eNodeB side and UE side user entity, solve the unusual problem of message transmissions.
Below in conjunction with drawings and the specific embodiments the present invention is further described.
As shown in Figure 1, the wireless chain control layer message number of retransmissions of the embodiment of the invention mainly comprises the steps: above maximum retransmission abnormity processing method
The first step, network side transmitting terminal rlc protocol entity detection the message number of retransmissions occurs to one or more business (comprising signaling/Data Radio Bearer) of corresponding certain UE and surpasses the unusual of maximum retransmission;
In second step, this rlc protocol entity reports the network controls face unusually with this;
In the 3rd step, the network controls face judges whether the wireless parameter reprovision is crossed in executed to this UE, if not, then this UE is initiated wireless parameter reprovision process; If then this UE is initiated intra-cell and changes process.
In the above-mentioned steps, trigger unusual business initiation wireless parameter reprovision at this UE and be meant, use new parameter value to reconfigure Status Disable timer, poll timer, the parameters such as pollByte, pollPDU of the unusual professional corresponding rlc protocol entity of triggering.
The network controls face is by the wireless parameter reprovision, solve because of parameter not the number of retransmissions that causes of adaptation network environment surpass the unusual of maximum retransmission.If after the wireless parameter reprovision is finished, the related service of this UE (being signaling/Data Radio Bearer) still triggers the message number of retransmissions again and again and surpasses the unusual of maximum retransmission, be likely that because due to the bottom radio link quality problem then the network controls face intra-cell that will trigger this UE is changed.
In addition, in the present embodiment, if after finishing intra-cell and changing, the related service of this UE still triggers the message number of retransmissions again and again and surpasses the unusual of maximum retransmission, then should be that signal is too weak really or disturb too serious in this sub-district, also can't address this problem from network side, therefore, connect discharging the RRC that unusual professional or this UE occurs.
Be further described in detail below in conjunction with the enforcement of two application examples of the present invention technical solution of the present invention.
Suppose to have at certain eNodeB the rlc protocol entity of 2 AM patterns that belong to UE, corresponding respectively 2 kinds of different business: DRB1 and DRB2 are assumed to be DRB (Data Radio Bearer) business herein.All having set up different business on these two DRB, is data sending terminal with the eNodeB side all, and the UE side is a data receiver.
In describing hereinafter, transmitting terminal rlc protocol entity all refers to network side transmitting terminal rlc protocol entity, and receiving terminal rlc protocol entity all refers to UE side joint receiving end rlc protocol entity.
Use example one
This application example is based on following application scenarios: data sending terminal (eNodeB) the RLC wireless parameter of network controls face configuration is that poll timer t_PollRetransmit duration is that 50ms, pollByte are 5000 bytes, and pollPDU is that 32, the threshold value of maximum retransmission maxRetxThreshold are 3 times; Data receiver (UE) the RLC wireless parameter of the configuration row timer t_Reordering duration of attaching most importance to is 50ms, and Status Disable timer t_statusProhibit duration is 100ms.
Wherein, as follows to above-mentioned wireless parameter functional description:
T_PollRetransmit: poll timer, one of transmission condition of transmitting terminal polling message, in case this timer expiry, then transmitting terminal is thought the data message that can send a poll position 1, require receiving terminal to provide and receive replying of message before, can not send out if having new message this moment, then retransmit the last message that sends;
PollByte: one of transmission condition of transmitting terminal polling message, in case the message total length that transmitting terminal sends surpasses pollByte, then transmitting terminal is thought the data message that can send a poll position 1, require receiving terminal to provide and receive replying of message before, can not send out if having new message this moment, then retransmit the last message that sends;
PollPDU: one of transmission condition of transmitting terminal polling message, in case the message number that transmitting terminal sends surpasses pollPDU, then transmitting terminal is thought the data message that can send a poll position 1, require receiving terminal to provide and receive replying of message before, can not send out if having new message this moment, then retransmit the last message that sends;
T_Reordering: reset timer,, then start this timer, and set surveyed area, behind timer expiry, the reception situation of message in the surveyed area can be formed status report and deliver to transmitting terminal if the message that receiving terminal is received is discontinuous;
T_StatusProhibit: Status Disable timer, receiving terminal start this timer after sending a status report, before this timer expiry, can not send next status report.
Use in the example at this, the wireless parameter of configuration is obviously unreasonable, the Status Disable timer duration of receiving terminal obviously is longer than the poll timer duration of transmitting terminal, this situation is easy to cause receiving terminal waiting Status Disable timer expiry ability status report, and transmitting terminal is repeatedly retransmitted because of the poll timer expiry already.
Should mainly comprise the steps: with the implementation of example as shown in Figure 2
The network side transmitting terminal rlc protocol entity detection of step 101.DRB1 arrives the threshold value of the number of retransmissions of certain PDU above maxRetxThreshold, promptly greater than 3 times;
This transmitting terminal rlc protocol entity of step 102. reports the network controls face unusually with this;
Among the present invention, the network controls face unusual carries out record when initiating the wireless parameter reprovision at UE because of what number of retransmissions surpassed maximum retransmission, thereby can judge that whether it initiated the wireless parameter reprovision because of the reason that reports unusually according to the respective record of this UE later on.
For example, can be with the rlc protocol entity wireless parameter reprovision of DRB1 correspondence: network side transmitting terminal RLC wireless parameter t_PollRetransmit timer duration be 70ms, pollByte is 10000 bytes, and pollPDU is 64, and maximum retransmission maxRetxThreshold is 3 times; UE side joint receiving end RLC wireless parameter is t_Reordering, and timer duration is 30ms, and the t_StatusProhibit timer duration is 50ms.
After reprovision was finished, whether transmitting terminal rlc protocol entity can detect again and also exist the PDU number of retransmissions to surpass the unusual of maximum retransmission, and this problem is resolved if do not exist then.Should use in the example, the network controls face is by the wireless parameter reprovision, come down to reduce the frequency that transmitting terminal initiatively retransmits, improved the frequency of receiving terminal return response, the two cooperatively interacts, can solve then that the message transmissions that causes of adaptation network environment is not unusual because of parameter, its essence is that the expense by increasing system guarantees its stability.
Use example two
The wireless parameter of transmitting terminal (eNodeB) the rlc protocol entity of network controls face configuration is that poll timer t_PollRetransmit timer duration is that 100ms, pollPdu are 5000 bytes, and pollPDU is that 256, maximum retransmission maxRetxThreshold are 4 times; The wireless parameter of receiving terminal (UE) rlc protocol entity of configuration row's timer t_Reordering timer duration of attaching most importance to is that 50ms, Status Disable timer t_StatusProhibit timer duration are 20ms.
In the present embodiment, parameter configuration is more rational, and receiving terminal is return response apace, and the frequency that transmitting terminal sends polling message is not high yet.
Should mainly comprise the steps: with the implementation of example as shown in Figure 3
The network side transmitting terminal rlc protocol entity of step 201.DRB1, DRB2 all detects the threshold value of the number of retransmissions of PDU above maxRetxThreshold, promptly greater than 4 times;
Step 202. transmitting terminal rlc protocol entity reports the network controls face unusually with this;
Step 203. network controls face judges that whether this UE initiated the wireless parameter reprovision because of the reason that reports unusually, if reprovision is not crossed then execution in step 204, otherwise execution in step 205;
Step 204. network controls face is initiated the reprovision flow process, reconfigures the network side transmitting terminal of DRB1, DRB2 correspondence, the wireless parameter of UE side joint receiving end rlc protocol entity, and this flow process finishes;
Step 205. network controls face is judged UE because of reporting reason to carry out the wireless parameter reprovision unusually, then assert it is because the re-transmission message due to the bottom radio link quality problem is too much, and this UE is initiated intra-cell change of current journey; After switching is finished, return step 201, whether the rlc protocol entity detects again and also exists the PDU number of retransmissions to surpass the unusual of maximum retransmission.
In addition, if still can't address this problem after finishing intra-cell and changing, can select this moment the RRC that discharges now unusual Data Radio Bearer or UE to connect.
Other are used in examples in the present invention, and when the message number of retransmissions occurring and surpass maximum retransmission as a certain SRB (Signaling Radio Bearer) business of UE, said method is suitable equally.Just after finishing intra-cell and changing, if still exist unusual, then can think in certain sub-district signal too a little less than, or disturb too seriously really, can't address this problem from network side, can select to discharge the RRC connection of whole UE this moment.
As shown in Figure 4, the network side radio controlling links layer message abnormity processing system that the embodiment of the invention provides comprises: the control unit, wireless parameter reprovision unit and the intra-cell that are positioned at the network controls face are changed the unit, wherein:
Control unit is used for, when occurring the message number of retransmissions on the network side transmitting terminal Radio Link control rlc protocol entity of signaling/Data Radio Bearer of finding user equipment (UE) and surpass maximum retransmission unusual, judge that whether this UE was because of carrying out wireless parameter reprovision process unusually, if do not carry out, then send the reprovision order to wireless parameter reprovision unit; Otherwise the transmission intra-cell is changed order to intra-cell and is changed the unit;
Wireless parameter reprovision unit is used for, and according to the reprovision order that receives UE is initiated wireless parameter reprovision process;
Intra-cell is changed the unit and is used for, and changes order according to the intra-cell that receives described UE initiation intra-cell is changed process.
Further, said system also comprises the network side transmitting terminal rlc protocol entity that links to each other with control unit, be used for when the signaling/Data Radio Bearer that detects described UE the message number of retransmissions occurs and surpasses maximum retransmission unusual, this being reported control unit unusually.
Further, control unit is used for, and whether after receiving described unusual that described transmitting terminal rlc protocol entity reports, checking has described UE because of the described reprovision record that causes unusually, if have, judge that then described UE is because of the described unusual wireless parameter reprovision process of carrying out; If no, then judge described UE not because of the described unusual wireless parameter reprovision process of carrying out, and when described UE is initiated wireless parameter reprovision process, increase the reprovision record of described UE.
Further, intra-cell is changed the unit and also is used for, and after finishing described intra-cell and changing, sends handover success message to control unit;
Control unit also is used for, receive above-mentioned handover success message after, if still receive above-mentioned unusual that transmitting terminal rlc protocol entity reports, then discharge and unusual signaling/Data Radio Bearer occurs, the RRC that perhaps discharges UE connects.
Further, wireless parameter reprovision unit comprises the wireless parameter reprovision that UE initiates, reconfigure a kind of or its combination in any in the following parameters of the rlc protocol entity that unusual signaling/Data Radio Bearer correspondence occurs: Status Disable timer, poll timer, pollByte, pollPDU parameter, and the threshold value of maximum retransmission.
Wherein, the rlc protocol entity of described correspondence comprises: network side transmitting terminal rlc protocol entity and UE side joint receiving end rlc protocol entity.
Claims (12)
1. a network side radio controlling links layer message abnormity processing method is characterized in that, comprising:
When the network controls face is found to occur on the network side transmitting terminal Radio Link control rlc protocol entity of signaling/Data Radio Bearer of user equipment (UE) the message number of retransmissions and is surpassed maximum retransmission unusual, therefore class is unusual and carried out wireless parameter reprovision process to judge this UE, if do not carry out, then this UE is initiated wireless parameter reprovision process; Otherwise, this UE is initiated intra-cell changes process.
2. the method for claim 1 is characterized in that, described method also comprises:
Described transmitting terminal rlc protocol entity reports described network controls face unusually with described when the signaling/Data Radio Bearer that detects described UE the message number of retransmissions occurs and surpasses maximum retransmission unusual.
3. method as claimed in claim 2 is characterized in that, described method also comprises:
Described network controls face receive described unusual after, whether have described UE because of the described reprovision record that unusually cause, if having, judge that then described UE is because of the described unusual wireless parameter reprovision process of carrying out if checking; If no, then judge described UE not because of the described unusual wireless parameter reprovision process of carrying out, and when described UE is initiated wireless parameter reprovision process, increase the reprovision record of described UE.
4. as claim 1,2 or 3 described methods, it is characterized in that described method also comprises:
After finishing described intra-cell and changing, whether described transmitting terminal rlc protocol entity detects described UE again and also exists the message number of retransmissions to surpass the unusual of maximum retransmission, if still exist, then discharge the unusual signaling/Data Radio Bearer of appearance, the radio resource control RRC that perhaps discharges described UE connects.
5. as claim 2 or 3 described methods, it is characterized in that,
Described wireless parameter reprovision is meant, reconfigures a kind of or its combination in any in the following parameters of the rlc protocol entity that unusual signaling/Data Radio Bearer correspondence occurs: Status Disable timer, poll timer, pollByte, pollPDU parameter.
6. method as claimed in claim 5 is characterized in that,
The rlc protocol entity of described correspondence comprises: described transmitting terminal rlc protocol entity and UE side joint receiving end rlc protocol entity.
7. method as claimed in claim 5 is characterized in that,
Described wireless parameter reprovision also comprises: the threshold value that reconfigures described maximum retransmission.
8. a network side radio controlling links layer message abnormity processing system is characterized in that, comprises that the control unit, wireless parameter reprovision unit and the intra-cell that are positioned at the network controls face change the unit, wherein:
Described control unit is used for, when occurring the message number of retransmissions on the network side transmitting terminal Radio Link control rlc protocol entity of signaling/Data Radio Bearer of finding user equipment (UE) and surpass maximum retransmission unusual, therefore class is unusual and carried out wireless parameter reprovision process to judge this UE, if do not carry out, then send the reprovision order to described wireless parameter reprovision unit; Otherwise the transmission intra-cell is changed order to described intra-cell and is changed the unit;
Described wireless parameter reprovision unit is used for, and according to the reprovision order that receives described UE is initiated wireless parameter reprovision process;
Described intra-cell is changed the unit and is used for, and changes order according to the described intra-cell that receives described UE initiation intra-cell is changed process.
9. system as claimed in claim 8 is characterized in that, described system also comprises the described transmitting terminal rlc protocol entity that links to each other with described control unit,
Described transmitting terminal rlc protocol entity is used for, and when the signaling/Data Radio Bearer that detects described UE the message number of retransmissions occurs and surpasses maximum retransmission unusual, reports described control unit unusually with described.
10. system as claimed in claim 9 is characterized in that,
Described control unit is used for, and after receiving described unusual that described transmitting terminal rlc protocol entity reports, whether have described UE because of the described reprovision record that unusually cause, if having, judge that then described UE is because of the described unusual wireless parameter reprovision process of carrying out if checking; If no, then judge described UE not because of the described unusual wireless parameter reprovision process of carrying out, and when described UE is initiated wireless parameter reprovision process, increase the reprovision record of described UE.
11. as claim 9 or 10 described systems, it is characterized in that,
Described intra-cell is changed the unit and also is used for, and after finishing described intra-cell and changing, sends handover success message to described control unit;
Described control unit also is used for, receive described handover success message after, if still receive described unusual that described transmitting terminal rlc protocol entity reports, then discharge and unusual signaling/Data Radio Bearer occurs, the RRC that perhaps discharges described UE connects.
12. as claim 9 or 10 described systems, it is characterized in that,
Described wireless parameter reprovision unit comprises the wireless parameter reprovision that described UE initiates, reconfigure a kind of or its combination in any in the following parameters of the rlc protocol entity that unusual signaling/Data Radio Bearer correspondence occurs: Status Disable timer, poll timer, pollByte, pollPDU parameter, and the threshold value of maximum retransmission;
Wherein, the rlc protocol entity of described correspondence comprises: described transmitting terminal rlc protocol entity reaches
UE side joint receiving end rlc protocol entity.
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| CN102891745A (en) * | 2012-10-19 | 2013-01-23 | 华为技术有限公司 | Network equipment and terminal abnormality identification method thereof |
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| CN110891326A (en) * | 2018-09-07 | 2020-03-17 | 中国移动通信有限公司研究院 | Control plane connection reestablishing method, communication equipment, target base station and source base station |
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