CN103298048B - The method and terminal of RRC connection re-establishment numbers in a kind of reduction handoff procedure - Google Patents
The method and terminal of RRC connection re-establishment numbers in a kind of reduction handoff procedure Download PDFInfo
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- CN103298048B CN103298048B CN201210055241.7A CN201210055241A CN103298048B CN 103298048 B CN103298048 B CN 103298048B CN 201210055241 A CN201210055241 A CN 201210055241A CN 103298048 B CN103298048 B CN 103298048B
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Abstract
The present invention provides the methods and terminal of wireless heterogeneous networks (RRC) connection re-establishment number in a kind of reduction handoff procedure, wherein, when this method includes that mobile terminal initiates RRC connection re-establishment processes, judge whether timer T304 is running, if timer T304 is being run, stop timer T304, executes the RRC connection re-establishment processes；Or when mobile terminal initiation RRC connection re-establishment processes, judge whether timer T304 is running, if timer T304 is being run, forbids executing the RRC connection re-establishment processes, RRC connection re-establishment processes are initiated after waiting timer T304 time-out.The invention avoids the RRC connection re-establishment processes initiated after the RRC connection re-establishments process initiated when timer T304 is run and timer T304 time-out to clash, and then the problem of initiation multiple RRC connection re-establishments process.
Description
Technical field
The present invention relates to wireless heterogeneous networks in the switching field of mobile communication more particularly to a kind of reduction handoff procedure
(RRC) method and terminal of connection re-establishment number.
Background technology
With third generation partner program (The 3rd Generation Partnership Project, abbreviation
3GPP) the propulsion of technology, the communications industry accelerate the commercialization of long term evolution (Long Term Evolution, abbreviation LTE) system
It promotes, LTE technologies are more and more accepted by people and grasp, and technical documentation and regulation are also perfect therewith, and short is several
LTE protocol experienced the development of multiple versions in year, content is more rich, function more comprehensively, details it is more accurate, but with
LTE system commercialization scene increases, and will reflect in practical application and not consider thorough aspect in agreement.
In Current protocol, terminal (UE) is switched to target BS (target from source base station (node B, that is, S_eNB of source evolution)
Node B, that is, T_eNB of evolution) during, it (i.e. includes handover information in RRC re-matching orders that UE receives switching command from source base station
Cell) after, start T304 timers, and random access procedure competition-based is executed with target BS：UE is sent out to target BS
Random access guiding (Random Access Preamble) i.e. one MSG1 of message, target BS is sent to return to random access response
(Random Access Response) i.e. two MSG2 of message, after the success of above-mentioned two interacting message, UE is sent to target BS
Scheduled transmission (Scheduled Transmission) message, the message complete message comprising high-level signaling switching re-matching and disappear
Three MSG3 are ceased, (MSG4 can be with if UE receives contention resolution message (Contention Resolution) message four i.e. MSG4
For the PDCCH message comprising descending control information format DCI0), UE will stop T304 timers at this time, switch successfully, such as Fig. 1
It is shown.
Since MSG3 message is the information transmitted on first signaling bear channel SRB1, for the wireless of UE and eNB
For link control layers (RLC) layer, the signaling on SRB1 must each other be confirmed with state report ACK (Acknowlege).Such as
Fruit UE does not receive state report or that receive is NACK (Non-Acknowlege), then UE retransmits MSG3 message, until reaching
Rlc layer maximum retransmission, even if T304 has not timed out at this time, UE as MSG3 retransmitting messages up to maximum retransmission and
Cause to fail with the wireless link of target BS, and then initiates wireless heterogeneous networks (RRC) connection re-establishment process.This
Outside, if UE bottoms can not use the parameter configuration in switching command to cause to re-match failure, RRC connection reconstructions can also be caused.
During subsequent wireless heterogeneous networks (RRC) connection re-establishment, if there is T304 timer expiries, UE can then be initiated again
RRC re-establishes process, and target BS will be considered that the RRC connection re-establishments for re-establishing conflict and initiating this UE are refused at this time, and
UE will continue to initiate RRC connection re-establishment processes again, and then UE is caused to initiate multiple connection re-establishment process.
Invention content
The present invention provides it is a kind of reduction handoff procedure in wireless heterogeneous networks (RRC) connection re-establishment number method and
Terminal, with solve how to reduce wireless heterogeneous networks in handoff procedure (RRC) connection re-establishment number the technical issues of.
To solve the above problems, the present invention provides wireless heterogeneous networks (RRC) connection weights in a kind of reduction handoff procedure
The method for establishing number, the method includes：
When mobile terminal initiates the RRC connection re-establishments process, judge whether timer T304 is running, if described
Timer T304 is being run, then stops the timer T304, executes the RRC connection re-establishments process；
Or, when mobile terminal initiates the RRC connection re-establishments process, judge whether timer T304 is running, if
The timer T304 is being run, then forbids executing the RRC connection re-establishments process, after waiting for the timer T304 time-out
Initiate RRC connection re-establishment processes.
Further, the condition that mobile terminal initiates the RRC connection re-establishments process includes：
Mobile terminal reaches preset maximum retransmission in the number of retransmissions of wireless spread-spectrum technology (RLC) layer；
Or
Mobile terminal uses the configuration parameter configuration physical layer (PHY) in the switching command from targeted handoff base station to lose
It loses；
Or
Mobile terminal uses the configuration parameter configuration media access control layer in the switching command from targeted handoff base station
(MAC), wireless chain control layer (RLC) or packet data convergence protocol (PDCP) failure.
Further, the mobile terminal reaches preset maximum weight in the number of retransmissions of wireless spread-spectrum technology (RLC) layer
Passing number includes：
The number that the mobile terminal re-matches completion message in rlc layer re-transmission switching reaches preset maximum re-transmission time
Number.
In order to solve the above technical problems, the present invention also provides wireless heterogeneous networks (RRC) in a kind of reduction handoff procedure
The mobile terminal of connection re-establishment number, the mobile terminal include RRC connection re-establishment processes initiation module, timer operation
Judgment module and RRC connection re-establishment control modules, wherein
The RRC connection re-establishments process initiation module, for initiating RRC connection re-establishment processes；
The timer operation judgment module judges timer after knowing that RRC connection re-establishment processes are initiated
Whether T304 is running, and will determine that RRC connection re-establishments control module described in result notice；
The RRC connection re-establishments control module stops the timer for knowing timer T304 at runtime
T304 executes the RRC connection re-establishments process；Or knowing timer T304 at runtime, forbid executing the RRC companies
The process of re-establishing is connect, RRC connection re-establishment processes are initiated after waiting for the timer T304 time-out.
Further, the RRC connection re-establishments process initiation module, for when mobile terminal is in wireless spread-spectrum technology
(RLC) when the number of retransmissions of layer reaches preset maximum retransmission, RRC connection re-establishment processes are initiated；Or for when movement
When terminal uses configuration parameter configuration physical layer (PHY) failure in the switching command from targeted handoff base station, initiates RRC and connect
Connect the process of re-establishing；Or for using the configuration parameter configuration matchmaker in the switching command from targeted handoff base station when mobile terminal
When body access control layer (MAC), wireless chain control layer (RLC) or packet data convergence protocol (PDCP) failure, RRC is initiated
Connection re-establishment process.
Further, the mobile terminal reaches preset maximum weight in the number of retransmissions of wireless spread-spectrum technology (RLC) layer
Passing number includes：
The number that the mobile terminal re-matches completion message in rlc layer re-transmission switching reaches preset maximum re-transmission time
Number.
The case where RRC connection re-establishment processes are initiated when above-mentioned technical proposal runs timer T304, passes through stopping
The timer T304 prohibits the RRC connection re-establishment processes initiated after timer T304 time-out；Or forbid the timer
The RRC connection re-establishment processes that T304 is initiated when running only execute the RRC connection re-establishments initiated after timer T304 time-out
Journey, the RRC for avoiding the RRC connection re-establishments process initiated when timer T304 operations and being initiated after timer T304 time-out connect
The problem of connecing the process of re-establishing to clash, and then causing multiple RRC connection re-establishments process.
Description of the drawings
Fig. 1 is that prior art terminal switches to random access procedure competition-based in target BS from source base station；
Fig. 2 is the method flow diagram for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment one；
Fig. 3 is the method flow diagram for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment two；
Fig. 4 is the method flow diagram that the first application example reduces RRC connection re-establishment numbers in handoff procedure；
Fig. 5 is the method flow diagram that the second application example reduces RRC connection re-establishment numbers in handoff procedure；
Fig. 6 is the method flow diagram that third application example reduces RRC connection re-establishment numbers in handoff procedure；
Fig. 7 is that the terminal for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment forms module map.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
Fig. 2 is the method flow diagram for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment one.
S201 mobile terminals initiate RRC connection re-establishment processes；
The condition that mobile terminal initiates the RRC connection re-establishments process includes：
Mobile terminal reaches preset maximum retransmission in the number of retransmissions of wireless spread-spectrum technology (RLC) layer, e.g., mobile
The number that terminal retransmits switching re-matching completion message in the rlc layer reaches preset maximum retransmission；Or mobile terminal makes
With configuration parameter configuration physical layer (PHY) failure in the switching command of targeted handoff base station；Or mobile terminal uses
From configuration parameter configuration media access control layer (MAC), the wireless chain control layer in the switching command of targeted handoff base station
(RLC) or packet data convergence protocol (PDCP) fails.
S202 mobile terminals judge whether timer T304 is running, if the timer T304 is being run, execute step
Rapid S203；
S203 mobile terminals stop timer T304, execute the RRC connection re-establishments process.
Fig. 3 is the method flow diagram for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment two.
S301 mobile terminals initiate RRC connection re-establishment processes；
The condition that mobile terminal initiates the RRC connection re-establishments process includes：
Mobile terminal reaches preset maximum retransmission in the number of retransmissions of wireless spread-spectrum technology (RLC) layer, e.g., mobile
The number that terminal retransmits switching re-matching completion message in the rlc layer reaches preset maximum retransmission；Or mobile terminal makes
With configuration parameter configuration physical layer (PHY) failure in the switching command of targeted handoff base station；Or mobile terminal uses
From configuration parameter configuration media access control layer (MAC), the wireless chain control layer in the switching command of targeted handoff base station
(RLC) or packet data convergence protocol (PDCP) fails.
S302 mobile terminals judge whether timer T304 is running, if the timer T304 is being run, execute step
Rapid S303；
S303 mobile terminals are forbidden executing the RRC connection re-establishments process, are sent out after waiting for the timer T304 time-out
Play RRC connection re-establishment processes.
In the following, above-described embodiment is further described using example by three.
Fig. 4 is the method flow diagram that the first application example reduces RRC connection re-establishment numbers in handoff procedure.
S401：Terminal UE receives the switching command of source base station transmission, starts T304 timers, setting timing length 500ms；
S402：UE executes random access procedure, and MSG1 is sent to target BS；
S403：UE receives the MSG2 from target BS；
S404：UE sends MSG3 to target BS；
S405：UE is confiscated after the arrival of retransmission timer duration (a length of 45ms when such as retransmission timer) from target
The state report of base station retransmits MSG3；
S406：UE judges whether to reach the maximum retransmission of setting by the number for retransmitting MSG3 that (such as maximum retransmission is set
It is set to 3), the number for such as retransmitting MSG3 reaches the maximum retransmission of setting, executes step S407, otherwise, executes step S405；
S407：Radio Link Failure has occurred in the rlc layer notice rrc layer of UE, initiates RRC connection re-establishment processes；
S408：UE judges whether timer T304 is running, if timer T304 is being run, executes step S409；
If the product of retransmission timer duration and maximum retransmission is less than the timing length of T304, timer T304 exists
Operation；
S409：UE directly stops T304 timers, executes step S410；
S410：UE executes the RRC connection re-establishment processes.
Fig. 5 is the method flow diagram that the second application example reduces RRC connection re-establishment numbers in handoff procedure.
S501：Terminal UE receives the switching command of source base station transmission, starts T304 timers, setting timing length 500ms；
S502：UE executes random access procedure, and MSG1 is sent to target BS；
S503：UE receives the MSG2 from target BS；
S504：UE sends MSG3 to target BS；
S505：UE is confiscated after the arrival of retransmission timer duration (a length of 45ms when such as retransmission timer) from target
The state report of base station retransmits MSG3；
S506：UE judges whether to reach the maximum retransmission of setting by the number for retransmitting MSG3 that (such as maximum retransmission is set
It is set to 3), the number for such as retransmitting MSG3 reaches the maximum retransmission of setting, executes step S507, otherwise, executes step S505；
S507：Radio Link Failure has occurred in the rlc layer notice rrc layer of UE, initiates RRC connection re-establishment processes；
S508：UE judges whether timer T304 is running, if timer T304 is being run, executes step S509；
S509：UE, which forbids executing to the handover-target base station, sends RRC connection re-establishment processes；
S510：UE initiates RRC connection re-establishments after waiting for the state of the T304 timers to be changed into the state of having timed out
Journey.
In above-described embodiment, the T304 durations setting and rlc layer maximum retransmission are arranged and retransmission timer duration
Setting can be other values, be had not timed out as long as meeting T304 that the MSG3 that rlc layer is retransmitted has reached the maximum times of setting, just
It can be according to above-mentioned flow processing.
Fig. 6 is the method flow diagram that third application example reduces RRC connection re-establishment numbers in handoff procedure.
S601：Terminal UE receives the switching command of source base station transmission, starts T304 timers, setting timing length 200ms；
S602：UE removes configuration layer two (MAC, RLC, PDCP) and layer one (PHY) with the configuration parameter in switching command；
S603：Two configuration failure of UE discovery layer, i.e., the parameter UE in switching command are unable to normal use or discovery layer one
Configuration failure, i.e., the parameter UE in switching command are unable to normal use, initiate RRC connection re-establishment processes；
S604：UE judges whether timer T304 is running, if timer T304 is being run, executes step S605；
S605：UE directly stops T304 timers, executes step S606；
S606：UE executes the RRC connection re-establishment processes.
Certainly, above-mentioned S605 and S606 is alternatively following implementation procedures：
S605 UE, which forbid executing to the handover-target base station, sends RRC connection re-establishment processes；
S606 UE initiate RRC connection re-establishments after waiting for the state of the T304 timers to be changed into the state of having timed out
Journey.
Fig. 7 is the mobile terminal comprising modules figure for reducing RRC connection re-establishment numbers in handoff procedure of the present embodiment.
The mobile terminal includes that RRC connection re-establishment processes initiation module, timer operation judgment module and RRC connect
It connects and re-establishes control module, wherein
The RRC connection re-establishments process initiation module, for initiating RRC connection re-establishment processes；
The RRC connection re-establishment process initiation modules can be used for the weight in wireless spread-spectrum technology (RLC) layer when mobile terminal
Pass (time of such as mobile terminal in rlc layer re-transmission switching re-matching completion message when number reaches preset maximum retransmission
Number reaches preset maximum retransmission), initiate RRC connection re-establishment processes；Or it can be used for coming from mesh when mobile terminal uses
When configuration parameter configuration physical layer (PHY) in the switching command of mark switching base station fails, RRC connection re-establishment processes are initiated；
Or it can be used for using the configuration parameter configuration media access control in the switching command from targeted handoff base station when mobile terminal
When layer (MAC), wireless chain control layer (RLC) or packet data convergence protocol (PDCP) failure, RRC connection re-establishments are initiated
Process.
The timer operation judgment module judges timer after knowing that RRC connection re-establishment processes are initiated
Whether T304 is running, and will determine that RRC connection re-establishments control module described in result notice；
The RRC connection re-establishments control module stops the timer for knowing timer T304 at runtime
T304 executes the RRC connection re-establishments process；Or knowing timer T304 at runtime, forbid executing the RRC companies
The process of re-establishing is connect, after waiting for the timer T304 time-out, initiates RRC connection re-establishment processes.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuits, accordingly
Ground, the form that hardware may be used in each module/unit in above-described embodiment are realized, the shape of software function module can also be used
Formula is realized.The present invention is not limited to the combinations of the hardware and software of any particular form.
It should be noted that the invention may also have other embodiments, without departing substantially from spirit of that invention and its essence
In the case of, those skilled in the art can make various corresponding change and deformations according to the present invention, but these are corresponding
Change and distortion should all belong to the protection domain of appended claims of the invention.
Claims (2)
1. a kind of method reducing radio resource control RRC connection re-establishment number in handoff procedure, which is characterized in that the side
Method includes：
When mobile terminal initiates the RRC connection re-establishments process, judge whether timer T304 is running, if the timing
Device T304 is being run, then forbids executing the RRC connection re-establishments process, RRC is initiated after waiting for the timer T304 time-out
Connection re-establishment process；
The condition that mobile terminal initiates the RRC connection re-establishments process includes：
Mobile terminal uses the configuration parameter configuration physical layer PHY in the switching command from targeted handoff base station to fail；Or it moves
Dynamic terminal uses the configuration parameter configuration media access control layer MAC in the switching command from targeted handoff base station, radio chains
Circuit control layer RLC or packet data convergence protocol PDCP failures.
2. a kind of mobile terminal reducing radio resource control RRC connection re-establishment number in handoff procedure, which is characterized in that institute
It includes RRC connection re-establishment processes initiation module, timer operation judgment module and RRC connection re-establishments to state mobile terminal
Control module, wherein
The RRC connection re-establishments process initiation module, for being referred to using the switching from targeted handoff base station when mobile terminal
When configuration parameter configuration physical layer PHY in order fails, RRC connection re-establishment processes are initiated；Or for being used when mobile terminal
Configuration parameter configuration media access control layer MAC, wireless chain control layer RLC in switching command from targeted handoff base station
Or when packet data convergence protocol PDCP failures, initiate RRC connection re-establishment processes；
The timer operation judgment module judges that timer T304 is after knowing that RRC connection re-establishment processes are initiated
It is no to run, and will determine that RRC connection re-establishments control module described in result notice；
The RRC connection re-establishments control module forbids executing the RRC companies for knowing timer T304 at runtime
The process of re-establishing is connect, RRC connection re-establishment processes are initiated after waiting for the timer T304 time-out.
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| CN107135522A (en) * | 2016-02-26 | 2017-09-05 | 中兴通讯股份有限公司 | A kind of method and user equipment for improving handover success rate |
| 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 |
| CN110351895B (en) * | 2018-04-04 | 2021-11-09 | 华为技术有限公司 | Communication method and device |
| CN112888000B (en) * | 2018-05-30 | 2022-10-28 | Oppo广东移动通信有限公司 | Radio resource control connection method and device, and computer 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 |
| CN111526599B (en) * | 2019-02-01 | 2022-05-31 | 华为技术有限公司 | Method and device for sending Radio Resource Control (RRC) message |
| CN111756485B (en) | 2019-03-27 | 2022-09-02 | 华为技术有限公司 | Control timer, data packet processing method and equipment |
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| CN101651899B (en) * | 2008-08-12 | 2012-12-05 | 中兴通讯股份有限公司 | Method for requesting reestablishment of LTE RRC connection, method for setting cause value and terminal |
| CN102238750A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Radio resource control connection re-establishment triggering method and device |
| CN103200627B (en) * | 2012-01-04 | 2018-05-11 | 中兴通讯股份有限公司 | The method and mobile terminal of conflict are re-established in a kind of solution handoff procedure |
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