CN103200627A - Method for eliminating reconstructing conflicts in switching process and mobile terminal - Google Patents
Method for eliminating reconstructing conflicts in switching process and mobile terminal Download PDFInfo
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- CN103200627A CN103200627A CN2012100010432A CN201210001043A CN103200627A CN 103200627 A CN103200627 A CN 103200627A CN 2012100010432 A CN2012100010432 A CN 2012100010432A CN 201210001043 A CN201210001043 A CN 201210001043A CN 103200627 A CN103200627 A CN 103200627A
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Abstract
The invention discloses a method for eliminating reconstructing conflicts in a switching process and a mobile terminal. In a random access process of competing switch, when the mobile terminal judges that the number of retransmission times of a switching reallocation completing message which is a message 3 reach a maximum retransmission number, a mode in which connection between radio resource control (RRC) and a reconstructing process is carried out is confirmed according to the state of a T304 timer. The method for eliminating the reconstructing conflicts in the switching process is capable of solving the problems of call drop, releasing of dedicated carriers and multiple times of reconstruction due to reconstructing conflicts, reducing probability of failure reconstruction, reducing scenes with a call drop rate, increasing a switching success rate, enhancing real-time experience of users, and improving network quality of operators.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of method and portable terminal of rebuilding upright conflict in the handoff procedure that solve.
Background technology
Along with third generation partner program (The 3rd Generation Partnership Project, abbreviation 3GPP) propelling of technology, the communications industry is to Long Term Evolution (Long Term Evolution, abbreviation LTE) commercialization of system is accelerated to promote, the LTE technology is more and more accepted by people and is grasped, technical documentation and regulation are also perfect thereupon, the LTE agreement has experienced the development of a plurality of versions in short several years, content is abundanter, function more comprehensively, details is more accurate, but along with increasing of the commercial scene of LTE system, will reflect in the practical application and not consider thorough aspect in the agreement.
In the current agreement, subscriber equipment (UE) switches to target BS (Node B of target evolution the is T_eNB) process from source base station (Node B of source evolution is S_eNB), after UE receives switching command from source base station, start the T304 timer, and carry out the random access procedure that competition is switched with target BS, it is message one MSG1 that UE sends wireless access leading to target BS, it is message two MSG2 that target BS returns the wireless access response, after above-mentioned two interacting messages success, it is message three MSG3 that UE finishes message to target BS transmission high-level signaling switching reprovision, if receiving message four is MSG4 (comprising a DCI0 among the PDCCH), UE will stop T304 timer, handover success this moment; Because MSG3 message is information transmitted on SRB1, rlc layer for UE and eNB, signaling on the SRB1 must be confirmed each other with status report ACK (Acknowlege), if UE does not receive status report or that receive is NACK (Non-Acknowlege), then UE retransmits MSG3 message, until reaching maximum retransmission, even this moment, T304 was also not overtime, UE also can reach maximum retransmission and initiate Radio Resource control (RRC) connection re-establishment flow process (T304 not being decided device in the agreement stops) because of the re-transmission of MSG3 message, T304 timer expiry subsequently, UE can initiate again to rebuild upright flow process (agreement is not done how to limit to rebuild can not initiate to rebuild in the upright process yet again and stood) because of the Radio Resource control (RRC) of T304 timer expiry, target BS can be thought the upright conflict of reconstruction and this UE was rebuild upright the refusal this moment, connect (ATTACH again) thereby make this UE initiate RRC again, cause call drop and some dedicated bearers to be released, rebuild problems such as upright repeatedly initiation.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method and portable terminal that solves the upright conflict of reconstruction in the handoff procedure, can solve in the competition handoff procedure and be released, rebuilds upright problem repeatedly because rebuilding upright call drop, the dedicated bearer that causes that conflict.
In order to solve the problems of the technologies described above, the invention provides a kind of method of rebuilding upright conflict in the handoff procedure that solves, wherein, portable terminal is in the random access procedure that competition is switched, judgement retransmit to be switched reprovision to target BS, and to finish message be the number of times of message three when reaching maximum retransmission, determines to carry out the mode of Radio Resource control (RRC) connection re-establishment process according to the state of T304 timer.
Further, said method can also have following characteristics:
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is for after overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Further, said method can also have following characteristics:
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
Further, said method can also have following characteristics:
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, kill described T304 timer, concurrent cause retransmits switches that reprovision finishes that message reaches maximum retransmission and the upright process of radio resource control connection reestablishment that causes.
Further, said method can also have following characteristics:
To finish message be the number of times of message three when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judges the state of described T304 timer for after not overtime, and retransmitting the switching reprovision to target BS again, to finish message be message three.
Further, said method can also have following characteristics:
Described portable terminal retransmits described switching reprovision again, and to finish message be after the number of times of message three reaches maximum retransmission, judge and the state of described T304 timer when overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
In order to solve the problems of the technologies described above, the invention provides a kind of portable terminal of rebuilding upright conflict in the handoff procedure that solves, wherein, described portable terminal comprises the hand-off process module; Described hand-off process module, in the random access procedure that competition is switched, judgement retransmit to be switched reprovision to target BS, and to finish message be the number of times of message three when reaching maximum retransmission, determines to carry out the mode of Radio Resource control (RRC) connection re-establishment process according to the state of T304 timer.
Further, above-mentioned portable terminal can also have following characteristics:
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is for after overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Further, above-mentioned portable terminal can also have following characteristics:
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is not for after overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
Further, above-mentioned portable terminal can also have following characteristics:
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is not for after overtime, kill described T304 timer, concurrent cause retransmits switches that reprovision finishes that message reaches maximum retransmission and the upright process of radio resource control connection reestablishment that causes.
Further, above-mentioned portable terminal can also have following characteristics:
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge the state of described T304 timer for after not overtime, finishing message to target BS re-transmission switching reprovision again is message three; Also being used for retransmitting again described switching reprovision, to finish message be after the number of times of message three reaches maximum retransmission, judge and the state of described T304 timer when overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
The invention provides the method for rebuilding upright conflict in the competition switching that solves, solve in the competition handoff procedure and be released, rebuild upright problem repeatedly because rebuilding upright call drop, the dedicated bearer that causes that conflict, reduce the probability of rebuilding upright failure, reduced the scene of cutting off rate, increase handover success rate, strengthen user's real-time experience sense, improved the network quality of operator.
Description of drawings
Fig. 1 solves the method flow diagram of rebuilding upright conflict in the handoff procedure among the embodiment;
Fig. 2 solves the method flow diagram of rebuilding upright conflict in the handoff procedure in the specific embodiment one;
Fig. 3 solves the method flow diagram of rebuilding upright conflict in the handoff procedure in the specific embodiment two;
Fig. 4 solves the method flow diagram of rebuilding upright conflict in the handoff procedure in the specific embodiment three;
Fig. 5 solves the method flow diagram of rebuilding upright conflict in the handoff procedure in the specific embodiment four.
Embodiment
As shown in Figure 1, solving the method for rebuilding upright conflict in the handoff procedure in this programme comprises: portable terminal is in the random access procedure that competition is switched, judgement retransmit to be switched reprovision to target BS, and to finish message be the number of times of message three when reaching maximum retransmission, determines to carry out the mode of Radio Resource control (RRC) connection re-establishment process according to the state of T304 timer.
Embodiment one
To finish message be that the number of times of message three is when reaching maximum retransmission to portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is for after overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Embodiment two
To finish message be that the number of times of message three is when reaching maximum retransmission to portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
Embodiment three
To finish message be that the number of times of message three is when reaching maximum retransmission to portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, kill described T304 timer, concurrent cause retransmits switches that reprovision finishes that message reaches maximum retransmission and the upright process of radio resource control connection reestablishment that causes.
Embodiment four
To finish message be the number of times of message three when reaching maximum retransmission to portable terminal retransmit to switch reprovision to target BS, judges the state of described T304 timer for after not overtime, and retransmitting the switching reprovision to target BS again, to finish message be message three.
Portable terminal retransmits described switching reprovision again, and to finish message be after the number of times of message three reaches maximum retransmission, judge and the state of described T304 timer when overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
In the said method, the T304 timer is responsible for starting the T304 timer behind the switching command that the time limit that UE initiates the RRC connection re-establishment: UE receives source base station, UE receives message four MSG4 before the T304 timer after, namely judge handover success, UE does not then also receive message four MSG4 at the T304 timer, then initiates the RRC connection re-establishment.
The T311 timer is responsible for rebuilding the time limit that the residential quarter is selected in the upright process, UE initiates to rebuild upright back and starts the T311 timer, after the T311 timer is then before chosen proper cell, stop the T311 timer, then also non-selected to proper cell at the T311 timer, then initiate to rebuild upright process again.
The T301 timer is responsible for rebuilding in the upright process and is rebuild the time limit that upright related news send, UE initiates RRC and rebuilds upright request message to the base station, and opens the T301 timer, after T301 then before receives the upright message of reconstruction, stop the T301 timer, and send the upright message of finishing of RRC reconstruction; Then also do not receive the upright message of reconstruction at the T301 timer, then initiate to rebuild upright process again.
Portable terminal in this case comprises the hand-off process module, the processing procedure that this hand-off process module is responsible for describing in the said method.
Describe the present invention in detail below by the drawings and specific embodiments.
Specific embodiment one
As shown in Figure 2, in the competition handoff procedure, UE starts T304 timer (duration is set to 200ms), carry out random access procedure, send MSG3 to target BS, the status report of confiscating target BS then retransmits MSG3 and reaches maximum retransmission (maximum retransmission is set to 3, the retransmission timer duration is 45ms) time, the rlc layer of UE can notify rrc layer to trigger heavily upright flow process, this moment, UE at first judged the state of T304 timer, judged result is for overtime, the UE rrc layer was in and rebuild the upright preparatory stage this moment, UE further judges the state of T311 timer and T301 timer, when T311 timer or T301 timer are not overtime, forbid carrying out because the number of times that retransmits MSG3 to target BS reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes, follow-up UE can initiate to cause the caused reconstruction of handoff failure to found process because T304 is overtime.
Specific embodiment two
As shown in Figure 3, in the competition handoff procedure, UE starts T304 timer (duration is set to 500ms), carry out random access procedure, send MSG3 to target BS, the status report of confiscating target BS then retransmits MSG3 and reaches maximum retransmission (maximum retransmission is set to 3, the retransmission timer duration is 45ms) time, the rlc layer of UE can notify rrc layer to trigger heavily upright flow process, UE at first judges the state of T304 timer, judged result is not for overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
In this concrete enforcement, if UE retransmit MSG3 reach judge that T304 is overtime after the maximum retransmission after, mode according to specific embodiment one is carried out, namely further judge the state of T311 timer and T301 timer, when if T311 timer or T301 timer are not overtime, forbid carrying out because of the number of times that retransmits MSG3 to target BS and reach the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Specific embodiment three
As shown in Figure 4, in the competition handoff procedure, UE starts T304 timer (duration is set to 500ms), carry out random access procedure, send MSG3 to target BS, the status report of confiscating target BS then retransmits MSG3 and reaches maximum retransmission (maximum retransmission is set to 3, the retransmission timer duration is 45ms) time, the rlc layer of UE can notify rrc layer to trigger heavily upright flow process, UE at first judges the state of T304 timer, judged result is then directly killed the T304 timer for not overtime, and follow-up UE initiates to reach the RRC connection re-establishment process that maximum retransmission causes because retransmitting MSG3.
In this concrete enforcement, if UE retransmit MSG3 reach judge that T304 is overtime after the maximum retransmission after, mode according to specific embodiment one is carried out, namely further judge the state of T311 timer and T301 timer, when if T311 timer or T301 timer are not overtime, forbid carrying out because of the number of times that retransmits MSG3 to target BS and reach the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Specific embodiment four
As shown in Figure 5, UE starts T304 timer (duration is set to 500ms), carry out random access procedure, send MSG3 to target BS, the status report of confiscating target BS then retransmits MSG3 and reaches maximum retransmission (maximum retransmission is set to 3, the retransmission timer duration is 45ms) time, the rlc layer of UE can notify rrc layer to trigger heavily upright flow process, UE at first judges the state of T304 timer, judged result is not for overtime, UE retransmits MSG3 to target BS again, again after the number of times that retransmits MSG3 reached maximum retransmission, UE judged the state of T304 timer again, if judged result is not still for overtime, then retransmit MSG3 to target BS again, again the number of times that retransmits MSG3 in this programme can be once also can be repeatedly, can increase the probability that rlc layer sends the MSG3 success like this, has namely promoted the probability of handover success, after UE receives MSG4, handover success.
In this concrete enforcement, if UE retransmit MSG3 reach judge that T304 is overtime after the maximum retransmission after, mode according to specific embodiment one is carried out, namely further judge the state of T311 timer and T301 timer, when if T311 timer or T301 timer are not overtime, forbid carrying out because of the number of times that retransmits MSG3 to target BS and reach the upright process of radio resource control connection reestablishment that maximum retransmission causes.
Need to prove that under the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (11)
1. one kind solves the method for rebuilding upright conflict in the handoff procedure, wherein,
Portable terminal is in the random access procedure that competition is switched, judgement retransmit to be switched reprovision to target BS, and to finish message be the number of times of message three when reaching maximum retransmission, determines to carry out the mode of Radio Resource control (RRC) connection re-establishment process according to the state of T304 timer.
2. the method for claim 1 is characterized in that,
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is for after overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
3. method as claimed in claim 1 or 2 is characterized in that,
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
4. method as claimed in claim 1 or 2 is characterized in that,
To finish message be that the number of times of message three is when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judge that the state of described T304 timer is not for after overtime, kill described T304 timer, concurrent cause retransmits switches that reprovision finishes that message reaches maximum retransmission and the upright process of radio resource control connection reestablishment that causes.
5. method as claimed in claim 1 or 2 is characterized in that,
To finish message be the number of times of message three when reaching maximum retransmission to described portable terminal retransmit to switch reprovision to target BS, judges the state of described T304 timer for after not overtime, and retransmitting the switching reprovision to target BS again, to finish message be message three.
6. method as claimed in claim 5 is characterized in that,
Described portable terminal retransmits described switching reprovision again, and to finish message be after the number of times of message three reaches maximum retransmission, judge and the state of described T304 timer when overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
7. one kind solves the portable terminal of rebuilding upright conflict in the handoff procedure, and wherein, described portable terminal comprises the hand-off process module;
Described hand-off process module, in the random access procedure that competition is switched, judgement retransmit to be switched reprovision to target BS, and to finish message be the number of times of message three when reaching maximum retransmission, determines to carry out the mode of Radio Resource control (RRC) connection re-establishment process according to the state of T304 timer.
8. portable terminal as claimed in claim 7 is characterized in that,
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is for after overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
9. as claim 7 or 8 described portable terminals, it is characterized in that,
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is not for after overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of reconstruction that maximum retransmission causes, wait for the state of described T304 timer for after overtime, initiate the upright process of radio resource control connection reestablishment that causes because of the T304 timer expiry.
10. as claim 7 or 8 described portable terminals, it is characterized in that,
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge that the state of described T304 timer is not for after overtime, kill described T304 timer, concurrent cause retransmits switches that reprovision finishes that message reaches maximum retransmission and the upright process of radio resource control connection reestablishment that causes.
11. as claim 7 or 8 described portable terminals, it is characterized in that,
Described hand-off process module, also be used for switching reprovision to finish message being that the number of times of message three is when reaching maximum retransmission retransmitting to target BS, judge the state of described T304 timer for after not overtime, finishing message to target BS re-transmission switching reprovision again is message three; Also being used for retransmitting again described switching reprovision, to finish message be after the number of times of message three reaches maximum retransmission, judge and the state of described T304 timer when overtime, judge when T311 timer or T301 timer are not overtime, forbid carrying out because retransmitting to target BS and switch reprovision to finish message be that the number of times of message three reaches the upright process of radio resource control connection reestablishment that maximum retransmission causes.
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| CN109219095A (en) * | 2017-07-04 | 2019-01-15 | 大唐移动通信设备有限公司 | Method for handover control and system |
| WO2020020139A1 (en) * | 2018-07-23 | 2020-01-30 | 南京中兴新软件有限责任公司 | Radio access mode handover method, base station, terminal, and readable storage medium |
| CN110753376A (en) * | 2018-07-23 | 2020-02-04 | 中兴通讯股份有限公司 | Wireless access mode switching method, base station, terminal and readable storage medium |
| CN111698746A (en) * | 2019-03-12 | 2020-09-22 | 大唐移动通信设备有限公司 | Cell switching method and device |
| CN111698746B (en) * | 2019-03-12 | 2021-09-28 | 大唐移动通信设备有限公司 | Cell switching method and device |
| CN113767677A (en) * | 2019-04-30 | 2021-12-07 | 上海诺基亚贝尔股份有限公司 | Random access message retransmission in unlicensed frequency bands |
| CN113767677B (en) * | 2019-04-30 | 2024-03-08 | 上海诺基亚贝尔股份有限公司 | Random access message retransmission in unlicensed bands |
| CN112291723A (en) * | 2020-10-23 | 2021-01-29 | 锐迪科（重庆）微电子科技有限公司 | Data transmission method, device and system |
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