CN104737601B - Method and device for adjusting uplink synchronization in time division duplexing system - Google Patents
Method and device for adjusting uplink synchronization in time division duplexing system Download PDFInfo
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- CN104737601B CN104737601B CN201380052749.4A CN201380052749A CN104737601B CN 104737601 B CN104737601 B CN 104737601B CN 201380052749 A CN201380052749 A CN 201380052749A CN 104737601 B CN104737601 B CN 104737601B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Abstract
A method and device for adjusting uplink synchronization in a time division duplexing (TDD) system, the method comprising: storing the information of the previous cell in a first variable, and determining whether the Tadv of the current cell can be directly acquired; if yes, then directly acquiring the Tadv of the current cell, calculating the final uplink transmission timing of the current cell according to the Tadv of the current cell, and storing the information of the current cell in a second variable; if no, then directly storing the information of the current cell in the second variable, and determining whether the first variable is the same as the second variable, if yes, then calculating the final uplink transmission timing of the current cell according to the Tadv of the previous cell, and if no, then acquiring the downlink timing difference between the previous cell and the current cell, adjusting the Tadv of the previous cell according to the downlink timing difference to acquire the Tadv of the current cell, and calculating final uplink transmission timing of the current cell according to the Tadv of the current cell; and updating the cell information of the second variable into the first variable.
Description
Technical field
The present invention relates to field of mobile communication, more particularly to a kind of time division duplex (Time Division Duplexing,
Referred to as TDD) uplink synchronous method of adjustment and device in system.
Background technology
In a tdd system, what terminal was likely encountered needs the scene that uplink synchronous are adjusted to include：Initial link setup, match somebody with somebody again
Put, baton handover, baton handover failure rollback, direct-cut operation, the direct-cut operation failure field such as rollback and bimodulus handoff failure rollback
Scape.In above-mentioned scene, shift to an earlier date except initial link setup and direct-cut operation can directly obtain up transmitting when uplink synchronous are carried out
Outward, other scenes are required to by thermoplastic polyurethane (Thermoplastic Polyurethane, TPU) indirectly amount (Tadv)
Obtain Tadv.
Under external field environment, affect up sending performance mainly has transmission power and Tadv, and up transmission is to Tadv
It is most sensitive.For example, when switching over, needs are adjusted soon according to descending timing to Tadv, if Tadv adjusts soon mistake, will
It is likely to directly result in up transmission exit window so as to handoff failure, and subsequently cannot be by slow adjustment and recovery, if rollback also loses
(e.g., former cell signal is weaker) is lost, voice call drop or data cutout is will result directly in, Consumer's Experience is had a strong impact on.
The content of the invention
The embodiment of the present invention provides uplink synchronous method of adjustment and device in a kind of TDD system, to solve correlation technique in
Easily occurs mistake on the fast timings of Tadv so as to affect the problem of up sending performance.
The embodiment of the present invention provides uplink synchronous method of adjustment in a kind of TDD system, including：
When it is determined that needing to carry out uplink synchronous, previous cell information is stored in the first variable, and judges whether energy
The up transmitting lead Tadv of enough direct access current areas；
If it is judged that being yes, the Tadv of direct access current area, calculate current little according to the Tadv of current area
The final up transmission timing in area, and current cell information is stored in the second variable；
If it is judged that being no, directly current cell information is stored in the second variable, judge the first variable and the
Whether two variables are identical, if identical, according to the Tadv of previous cell the final up transmission timing of current area calculated, if
Differ, obtain the descending timing difference of previous cell and current area, and the Tadv of previous cell is entered according to descending timing difference
Row adjustment, obtains the Tadv of current area, and according to the Tadv of current area the final up transmission timing of current area is calculated；With
And
Cell information in second variable is updated in the first variable.
Alternatively,
The scene for carrying out uplink synchronous is needed to include：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback,
Direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure rollback；
Being capable of the scene of the Tadv of direct access current area includes：Initial link setup and direct-cut operation；
First variable and the second variable identical scene include：Reconfigure；
The different scene of first variable and the second variable includes：Baton handover, the failure of baton handover rollback, direct-cut operation failure
Rollback and bimodulus handoff failure rollback.
Alternatively, the Tadv of direct access current area includes：
According to the Tadv of the UPpos acquisition of information current area carried in physical access channel FPACH.
Alternatively, the final up transmission timing for calculating current area according to the Tadv of the current area includes：
The final up transmission timing of current area is calculated according to formula 1：
TX_Ti min g=Ti min g-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Ti min g for current area final up transmission timing, Ti min g be according to descending timing and
The up timing that frame structure determines, TX_HW_Delay is hardware handles delay.
Alternatively, the Tadv of previous cell is adjusted according to descending timing difference, obtaining the Tadv of current area includes：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
The embodiment of the present invention additionally provides uplink synchronous adjusting apparatus in a kind of TDD system, including：Storage is sentenced
Disconnected module, the first storage computing module, the second storage computing module and update module；Wherein,
Storage judge module is arranged to：When it is determined that needing to carry out uplink synchronous, previous cell information is stored in into first
In variable, and judge whether to be capable of the up transmitting lead Tadv of direct access current area, if it is judged that being yes, adjust
With the first storage computing module, if it is judged that being no, then the second storage computing module is called；
First storage computing module is arranged to：The Tadv of direct access current area, calculates according to the Tadv of current area
The final up transmission timing of current area, and current cell information is stored in the second variable, call update module；
Second storage computing module is arranged to：Directly current cell information is stored in the second variable, the first change is judged
Whether amount and the second variable are identical, fixed according to the final up transmission that the Tadv of previous cell calculates current area if identical
When, if it is not the same, the descending timing difference of previous cell and current area is obtained, and according to descending timing difference to previous cell
Tadv is adjusted, and obtains the Tadv of current area, and according to the Tadv of current area the final up transmission of current area is calculated
Regularly, update module is called；And
Update module is arranged to：Cell information in second variable is updated in the first variable.
Alternatively,
The scene for carrying out uplink synchronous is needed to include：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback,
Direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure rollback；
Being capable of the scene of the Tadv of direct access current area includes：Initial link setup and direct-cut operation；
First variable and the second variable identical scene include：Reconfigure；
The different scene of first variable and the second variable includes：Baton handover, the failure of baton handover rollback, direct-cut operation failure
Rollback and bimodulus handoff failure rollback.
Alternatively, the first storage computing module is arranged to the Tadv of direct access current area as follows：
According to the Tadv of the UPpos acquisition of information current area carried in physical access channel FPACH.
Alternatively, the first storage computing module and the second storage computing module are arranged to be worked as according to described as follows
The Tadv of front cell calculates the final up transmission timing of current area：
The final up transmission timing of current area is calculated according to formula 1：
TX_Ti min g=Ti min g-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Ti min g for current area final up transmission timing, Ti min g be according to descending timing and
The up timing that frame structure determines, TX_HW_Delay is hardware handles delay.
Alternatively, the second storage computing module is arranged to as follows according to the descending timing difference to previous cell
Tadv be adjusted, obtain current area Tadv：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
In the embodiment of the present invention, entered by the Tadv in a tdd system to terminal for uplink synchronous under various scenes
The unified adjustment of row, solves in correlation technique and mistake easily occurs so as to affect asking for up sending performance to the fast timings of Tadv
Topic, it is possible to increase up sending performance, especially makes the voice length under the mobile environment of outfield protect and upload average with downloading data
Speed is significantly improved, and greatly reduces the appearance of voice call drop and data cutout situation.
Summary of drawings
Fig. 1 be the embodiment of the present invention TDD system in uplink synchronous method of adjustment flow chart；
Fig. 2 be the embodiment of the present invention TD-SCDMA system in the schematic diagram of relation asked with descending timing of up timing；
Fig. 3 is the detail flowchart that the terminal of the embodiment of the present invention carries out Tadv adjustment under each scene；
Fig. 4 be the embodiment of the present invention TDD system in uplink synchronous adjusting apparatus structural representation.
The better embodiment of the present invention
The exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention and should not be by embodiments set forth here
Limited.On the contrary, there is provided these embodiments are able to be best understood from the present invention, and can be by the scope of the present invention
Intactly convey to those skilled in the art.
Easily there is mistake so as to affect up sending performance to the fast timings of Tadv in order to solve the problems, such as correlation technique,
Uplink synchronous method of adjustment and device in a kind of TDD system are embodiments provided, in embodiments of the present invention, it is contemplated that
When terminal reconfiguring, baton handover, baton handover failure rollback, direct-cut operation failure rollback, the nothing such as bimodulus handoff failure rollback
Under the scene of method direct access Tadv, the method for carrying out Tadv adjustment indirectly according to TPU.Initial link setup and cut are considered simultaneously
The scene of direct access Tadv when changing, and the modularity and portability of software realization, it is proposed that one kind is applied to above-mentioned each
The unified Tadv methods of adjustment of scene.
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that in the case where not conflicting, this Shen
Please in embodiment and the feature in embodiment can mutual combination in any.
Embodiment of the method
A kind of embodiments in accordance with the present invention, there is provided uplink synchronous method of adjustment in TDD system, Fig. 1 is of the invention real
Apply the flow chart of uplink synchronous method of adjustment in the TDD system of example, it should be noted that in embodiments of the present invention, need into
The scene of row uplink synchronous includes：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback, direct-cut operation, direct-cut operation
Failure rollback and bimodulus handoff failure rollback；Being capable of the scene of the Tadv of direct access current area includes：Initial link setup,
And direct-cut operation；First variable and the second variable identical scene include：Reconfigure；The different field of first variable and the second variable
Scape includes：Baton handover, the failure of baton handover rollback, direct-cut operation failure rollback and bimodulus handoff failure rollback.Separately below
It is analyzed for above scene.
Identical due to reconfiguring before and after cell when terminal is reconfigured, Tadv and TPU need not be adjusted soon
Whole, before continuing to slow adjustment.
Return when terminal carries out baton handover, baton handover failure rollback, direct-cut operation failure rollback and bimodulus handoff failure
When moving back, because Qian Hou cell is different, need to adjust Tadv and TPU soon.Terminal can first carry out TPU soon adjustment complete with newly
The descending Timing Synchronization of cell, afterwards using up timing in TDD system and the relation of descending timing, is adjusted soon to Tadv
It is whole, so as to carry out the up Timing Synchronization of new cell indirectly.
When terminal carries out initial link setup or direct-cut operation, terminal can carry out uplink synchronous process, directly obtain from network side
Initial cell and/or the Tadv of new cell.Because when uplink synchronous process is carried out, terminal has obtained cell information, so as to
Can be uniformly processed with above-mentioned each scene.
In a tdd system, the transmission timing of terminal is in addition to it will consider Tadv, in addition it is also necessary to consider that Base-Band Processing postpones.
For some terminal, Base-Band Processing postpones to be a fixed value.Can be calculated according to below equation：TX_Ti
Min g=Ti min g-Tadv-TX_HW_Delay, wherein, TX_Ti min g are final up transmission timing, Ti min
G is the up timing determined according to descending timing and frame structure, and TX_HW_Delay is hardware handles delay.
Based on above-mentioned analysis, the technical scheme of the embodiment of the present invention is described in detail below.
As shown in figure 1, uplink synchronous method of adjustment comprises the steps in TDD system according to embodiments of the present invention：
Step 101, when it is determined that needing to carry out uplink synchronous, previous cell information is stored in the first variable, and is sentenced
It is disconnected whether to be capable of the Tadv of direct access current area, if it is judged that be yes, execution step 102, if it is judged that being
It is no, then execution step 103.
Step 102, the Tadv of direct access current area, according to the Tadv of current area calculate current area it is final on
Row sends timing, and current cell information is stored in the second variable, execution step 104.
In a step 102, the Tadv of direct access current area includes：According to physical access channel (Fast
Physical Access Channel, FPACH) in carry UPpos acquisition of information current area Tadv.
Step 103, directly stores current cell information in the second variable, judges whether are the first variable and the second variable
It is identical, if identical, the final up transmission timing of current area is calculated according to the Tadv of previous cell, if it is not the same, obtaining
The descending timing difference of previous cell and current area is taken, and the Tadv of previous cell is adjusted according to descending timing difference, obtained
The Tadv of current area is taken, the final up transmission timing of current area, execution step are calculated according to the Tadv of current area
104。
In step 102 and step 103, the final up transmission timing of current area is calculated according to the Tadv of current area
Including following process：
The final up transmission timing of current area is calculated according to formula 1：
TX_Ti min g=Ti min g-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Ti min g for current area final up transmission timing, Ti min g be according to descending timing and
The up timing that frame structure determines, TX_HW_Delay is hardware handles delay.
In step 103, the Tadv of previous cell is adjusted according to descending timing difference, obtains the Tadv of current area
Including following process：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
Step 104, the cell information in the second variable is updated in the first variable.
Below in conjunction with accompanying drawing, the above-mentioned technical proposal of the embodiment of the present invention is described in detail.
Fig. 2 be the embodiment of the present invention TD-SCDMA system in up-downgoing timing and the signal of the descending relation fixed time
Figure, as illustrated in fig. 2, it is assumed that the downlink reception link delay of terminal is Delta_T, due to the CDMA (Time of time division synchronous
Division-Synchronization Code Division Multiple Access, TD-SCDMA) uplink in system
Road and downlink have identical link delay, so terminal needs the ascending time slot than base station (that is, node B (NodeB))
The place moment shifts to an earlier date Delta_T, can just make the upward signal that terminal sends just fall in the ascending time slot of NodeB.And terminal
Up timing be on the basis of descending timing, so terminal need carry on the basis of the ascending time slot according to descending timing determination
Front 2 × Delta_T sends ascending time slot signal.Can be drawn according to foregoing description, the up timing difference of two minizones with it is descending
There is twice relation between timing difference.The descending timing difference of two minizones is designated as into OTD, then the up timing of new cell is as follows：
Tadv+=2 × OTD, i.e. TadvCurrent area=TadvPrevious cell+2*OTD。
Fig. 3 is the detail flowchart that the terminal of the embodiment of the present invention carries out Tadv adjustment under each scene, as shown in figure 3,
Including following process.
It is provided in an embodiment of the present invention be terminal initial link setup, reconfigure, baton handover, baton handover failure rollback,
Tadv methods of adjustment when direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure rollback, for terminal is in Serving cell
Link keep the stage the slow methods of adjustment of Tadv, do not account in the embodiment of the present invention.
In embodiments of the present invention, need to use two global variables：PreCellInfo and NewCellInfo, wherein,
PreCellInfo preserves previous cell information, and NewCellInfo preserves current cell information.
As shown in figure 3, the flow process that terminal carries out Tadv adjustment under each scene comprises the steps：
Step 301, when it is determined that needing to carry out uplink synchronous, judges whether the Tadv for being capable of direct access current area
(being capable of the scene of the Tadv of direct access current area includes initial link setup and direct-cut operation), if the determination result is YES, perform step
Rapid 302, if judged result is no, execution step 305.
Step 302, if it is possible to the Tadv of direct access current area, then be stored in global variable by previous cell information
(the first above-mentioned variable is corresponded in PreCellInfo).
Step 303, calculates the Tadv of current area and updates according to the UPpos information carried in FPACH.
Step 304, according to formula TX_Ti min g=Ti min g-Tadv-TX_HW_Delay current area is calculated
Final up transmission timing, and current cell information storage is arrived in NewCellInfo (corresponding to above-mentioned second variable), most
Afterwards, cell information is updated to PreCellInfo, i.e. PreCellInfo=NewCellInfo, just to establish next time
Chain, reconfigure, baton handover, baton handover failure rollback, direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure return
Use when moving back.
Step 305, if can not direct access current area Tadv, only need recording cell information
NewCellInfo。
Step 306, judges whether previous cell identical with current area, i.e. judge PreCellInfo with
Whether NewCellInfo is identical.
Step 307, if presented as same cell, then the descending timing difference OTD of two minizones is 0, according to formula
TadvCurrent area=TadvPrevious cell+ 2*OTD, it may be determined that the Tadv of current area is identical with the Tadv of previous cell, therefore,
The final up transmission timing of current area is calculated according to the Tadv of previous cell, and according to formula TX_Ti min g=Ti
Min g-Tadv-TX_HW_Delay calculate the final up transmission timing of current area.
Step 308, if presented as different districts, needs the descending timing difference OTD for obtaining two minizones.
Step 309, according to up timing with the descending relation fixed time and the OTD values of acquisition (that is, according to formula
TadvCurrent area=TadvPrevious cell+ 2*OTD) calculate current area Tadv.
Step 310, according to formula TX_Ti min g=Ti min g-Tadv-TX_HW_Delay current area is calculated
Final up transmission timing.
Step 311, the cell information in NewCellInfo is updated to PreCellInfo, i.e. PreCellInfo=
NewCellInfo, so as to initial link setup next time, reconfigure, baton handover, baton handover failure rollback, direct-cut operation, cut
Use when changing unsuccessfully rollback and bimodulus handoff failure rollback.
It should be noted that the embodiment of the present invention is illustrated by taking the TD-SCDMA system in TDD system as an example, its side
Method principle is equally applicable to time division duplex Long Term Evolution (TD-Long Term Evolution, TD-LTE) system.
In sum, the embodiment of the present invention has considered uplink synchronous method of adjustment of the terminal under various scenes, from
And up sending performance is improve, especially make the voice length under the mobile environment of outfield protect and upload the Mean Speed with downloading data
It is significantly improved, greatly reduces the appearance of voice call drop and data cutout situation.And the embodiment of the present invention is adopted to each scene
With unified Tadv methods of adjustment, optimize software and realize flow process, be easy to transplant and safeguard.
Device embodiment
A kind of embodiments in accordance with the present invention, there is provided uplink synchronous adjusting apparatus in TDD system, Fig. 4 is of the invention real
The structural representation of uplink synchronous adjusting apparatus in the TDD system of example is applied, it should be noted that in embodiments of the present invention, is needed
Carrying out the scene of uplink synchronous includes：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback, direct-cut operation, firmly
Handoff failure rollback and bimodulus handoff failure rollback；Being capable of the scene of the Tadv of direct access current area includes：Just establish
Chain and direct-cut operation；First variable and the second variable identical scene include：Reconfigure；First variable and the second variable are different
Scene include：Baton handover, the failure of baton handover rollback, direct-cut operation failure rollback and bimodulus handoff failure rollback.Below
It is respectively directed to above scene to be analyzed.
Identical due to reconfiguring before and after cell when terminal is reconfigured, Tadv and TPU need not be adjusted soon
Whole, before continuing to slow adjustment.
Return when terminal carries out baton handover, baton handover failure rollback, direct-cut operation failure rollback and bimodulus handoff failure
When moving back, because Qian Hou cell is different, need to adjust Tadv and TPU soon.Terminal can first carry out TPU soon adjustment complete with newly
The descending Timing Synchronization of cell, afterwards using up timing in TDD system and the descending relation fixed time, is adjusted soon to Tadv
It is whole, so as to carry out the up Timing Synchronization of new cell indirectly.
When terminal carries out initial link setup or direct-cut operation, terminal can carry out uplink synchronous process, directly obtain from network side
Initial cell and/or the Tadv of new cell.Because when uplink synchronous process is carried out, terminal has obtained cell information, so as to
Can be uniformly processed with above-mentioned each scene.
In a tdd system, the transmission timing of terminal is in addition to it will consider Tadv, in addition it is also necessary to consider that Base-Band Processing postpones.
For some terminal, Base-Band Processing postpones to be a fixed value.Can be calculated according to below equation：TX_Ti
Min g=Ti min g-Tadv-TX_HW_Delay, wherein, TX_Ti min g are final up transmission timing, Ti min
G is the up timing determined according to descending timing and frame structure, and TX_HW_Delay is hardware handles delay.
Based on above-mentioned analysis, the technical scheme of the embodiment of the present invention is described in detail below.
As shown in figure 4, uplink synchronous adjusting apparatus include in TDD system according to embodiments of the present invention：Storage judges mould
Storage computing module 42, the second storage computing module 44 of block 40, first and update module 46, below to the embodiment of the present invention
Modules be described in detail.
Storage judge module 40 is used for：When it is determined that needing to carry out uplink synchronous, previous cell information is stored in into first
In variable, and judge whether to be capable of the Tadv of direct access current area, if it is judged that being yes, call the first storage to calculate
Module 42, if it is judged that being no, then calls the second storage computing module 44；
First storage computing module 42 is used for：The Tadv of direct access current area, calculates according to the Tadv of current area
The final up transmission timing of current area, and current cell information is stored in the second variable, call update module 46；
First storage computing module 42 can be according to the Tadv of the UPpos acquisition of information current area carried in FPACH.
Second storage computing module 44 directly stores current cell information in the second variable, judges the first variable and the
Whether two variables are identical, if identical, according to the Tadv of previous cell the final up transmission timing of current area calculated, if
Differ, obtain the descending timing difference of previous cell and current area, and the Tadv of previous cell is entered according to descending timing difference
Row adjustment, obtains the Tadv of current area, according to the final up transmission timing that the Tadv of current area calculates current area, adjusts
With update module 46.
The first storage storage computing module 44 of computing module 42 and second is used for as follows according to current area
Tadv calculates the final up transmission timing of current area：
The final up transmission timing of current area is calculated according to formula 1：
TX_Ti min g=Ti min g-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Ti min g for current area final up transmission timing, Ti min g be according to descending timing and
The up timing that frame structure determines, TX_HW_Delay is hardware handles delay.
Second storage computing module 44 is used to as follows adjust the Tadv of previous cell according to descending timing difference
It is whole, obtain the Tadv of current area：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
Update module 46 updates the cell information in the second variable in the first variable.
Below in conjunction with accompanying drawing, the above-mentioned technical proposal of the embodiment of the present invention is described in detail.
Fig. 2 be the embodiment of the present invention TD-SCDMA system in up timing and the descending relation fixed time schematic diagram,
As illustrated in fig. 2, it is assumed that the downlink reception link delay of terminal be Delta_T, due in TD-SCDMA system up-link and under
Line link has identical link delay, so terminal needs to shift to an earlier date Delta_T than the moment that NodeB ascending time slot is located, ability
The upward signal that terminal sends is set just to fall in the ascending time slot of NodeB.And the up timing of terminal is to be with descending timing
Benchmark, so terminal needs to shift to an earlier date 2 × Delta_T transmission ascending time slots on the basis of the ascending time slot according to descending timing determination
Signal.Can draw there is twice relation between the up timing difference and descending timing difference of two minizones according to foregoing description.Will
The descending timing difference of two minizones is designated as OTD, then the up timing of new cell is as follows：Tadv+=2 × OTD, i.e. TadvCurrent area
=TadvPrevious cell+2*OTD。
Fig. 3 is the detail flowchart that the terminal of the embodiment of the present invention carries out Tadv adjustment under each scene, as shown in figure 3,
Including following process.
It is provided in an embodiment of the present invention be terminal initial link setup, reconfigure, baton handover, baton handover failure rollback,
Tadv methods of adjustment when direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure rollback, for terminal is in Serving cell
Link keep the stage the slow methods of adjustment of Tadv, do not account in the embodiment of the present invention.
In embodiments of the present invention, need to use two global variables：PreCellInfo and NewCellInfo, wherein,
PreCellInfo preserves previous cell information, and NewCellInfo preserves current cell information.
When it is determined that needing to carry out uplink synchronous, judge whether that the Tadv for being capable of direct access current area (can be direct
Obtaining the scene of the Tadv of current area includes initial link setup and direct-cut operation)；
If being capable of the Tadv of direct access current area, previous cell information is stored in into global variable
(the first above-mentioned variable is corresponded in PreCellInfo), then calculate current little according to the UPpos information carried in FPACH
The Tadv in area simultaneously updates, and subsequently calculates current area according to formula TX_Ti min g=Ti min g-Tadv-TX_HW_Delay
Final up transmission timing, and by current cell information storage to NewCellInfo (correspond to above-mentioned second variable), most
Afterwards, cell information is updated to PreCellInfo, i.e. PreCellInfo=NewCellInfo, just to establish next time
Chain, reconfigure, baton handover, baton handover failure rollback, direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure return
Use when moving back.
If can not direct access current area Tadv, only need recording cell information NewCellInfo, then sentence
Whether previous cell of breaking and current area are identical, i.e. judge whether PreCellInfo and NewCellInfo is identical.If represented
For same cell, then the descending timing difference OTD of minizone is 0, according to formula TadvCurrent area=TadvPrevious cell+ 2*OTD, can
It is identical with the Tadv of previous cell with the Tadv for determining current area, therefore, calculate current little according to the Tadv of previous cell
The final up transmission timing in area, and calculate current according to formula TX_Ti min g=Ti min g-Tadv-TX_HW_Delay
The final up transmission timing of cell；If presented as different districts, the descending timing difference OTD for obtaining two minizones, root are needed
According to up timing with the descending relation fixed time and the OTD values of acquisition (that is, according to formula TadvCurrent area=TadvPrevious cell+2*
OTD), the Tadv of current area is calculated, finally according to formula TX_Ti min g=Ti min g-Tadv-TX_HW_Delay meters
Calculate the final up transmission timing of current area.Finally, the cell information in NewCellInfo is updated to PreCellInfo,
That is, PreCellInfo=NewCellInfo, so as to initial link setup next time, reconfigure, baton handover, baton handover failure
Use when rollback, direct-cut operation, direct-cut operation failure rollback and bimodulus handoff failure rollback.
It should be noted that the embodiment of the present invention is illustrated by taking the TD-SCDMA system in TDD system as an example, its side
Method principle is equally applicable to TD-LTE system.
In sum, the embodiment of the present invention has considered uplink synchronous method of adjustment of the terminal under various scenes, from
And up sending performance is improve, especially make the voice length under the mobile environment of outfield protect and upload the Mean Speed with downloading data
It is significantly improved, greatly reduces the appearance of voice call drop and data cutout situation.And the embodiment of the present invention is adopted to each scene
With unified Tadv methods of adjustment, optimize software and realize flow process, be easy to transplant and safeguard.
Provided herein algorithm and display be not inherently related to any certain computer, virtual system or miscellaneous equipment.
Various general-purpose systems can also be used together based on teaching in this.As described above, construct required by this kind of system
Structure be obvious.Additionally, the present invention is also not for any certain programmed language.It is understood that, it is possible to use it is various
Programming language realizes the content of invention described herein embodiment, and the description done to language-specific above is to drape over one's shoulders
The preferred forms of the dew embodiment of the present invention.
In description mentioned herein, a large amount of details are illustrated.It is to be appreciated, however, that embodiments of the invention can
To put into practice in the case of without these details.In some instances, known method, structure and technology are not been shown in detail,
So as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the present invention and help understand one or more in each inventive aspect, exist
Above in the description of the exemplary embodiment of the present invention, each feature of the present invention is grouped together into single enforcement sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：That is, it is required
The more features of feature that the application claims ratio of protection is expressly recited in each claim.More precisely, as follows
As the claims in face reflect, inventive aspect is all features less than single embodiment disclosed above.Cause
This, it then follows thus claims of embodiment are expressly incorporated in the embodiment, and wherein each claim itself is made
For the separate embodiments of the present invention.
Those skilled in the art are appreciated that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Unit or component are combined into a module or unit or component, and can be divided in addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit is excluded each other, can adopt any
Combine to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Profit is required, summary and accompanying drawing) disclosed in each feature can it is identical by offers, be equal to or the alternative features of similar purpose carry out generation
Replace.
Although additionally, it will be appreciated by those of skill in the art that some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment required for protection appoint
One of meaning can in any combination mode using.
The present invention all parts embodiment can be realized with hardware, or with one or more processor operation
Software module realize, or with combinations thereof realization.It will be understood by those of skill in the art that can use in practice
Microprocessor or digital signal processor (Digital Signal Processor, DSP) are realizing according to present invention enforcement
The some or all functions of some or all parts in the TDD system of example in uplink synchronous adjusting apparatus.It is of the invention real
Apply some or all equipment or program of device being also implemented as in example for performing method as described herein
(for example, computer program and computer program).Such program for realizing the present invention can be stored in computer-readable
On medium, or there can be the form of one or more signal.Such signal can be downloaded from internet website
Arrive, or provide on carrier signal, or provide in any other form.
It should be noted that above-described embodiment is used for, and the present invention will be described rather than limits the invention, and
And those skilled in the art can design without departing from the scope of the appended claims alternative embodiment.Will in right
In asking, any reference markss between bracket should not be configured to limitations on claims.Word "comprising" is not excluded for
There is element not listed in the claims or step.Word "a" or "an" before element does not exclude the presence of multiple
Such element.The present invention can be by means of the hardware for including some different elements and by means of properly programmed computer
To realize.If in the unit claim for listing equipment for drying, several in these devices can be by same hard
Part item is embodying.The use of word first, second, and third does not indicate that any order.These words can be explained and be run after fame
Claim.
Industrial applicibility
In the embodiment of the present invention, solve in correlation technique and mistake easily occur so as to affect up to the fast timings of Tadv
Send the problem of performance, it is possible to increase up sending performance, the voice length under the mobile environment of outfield is protected and is uploaded and download
The Mean Speed of data is significantly improved, and greatly reduces the appearance of voice call drop and data cutout situation.
Claims (6)
1. uplink synchronous method of adjustment in a kind of TDD system, including：
When it is determined that needing to carry out uplink synchronous, previous cell information is stored in the first variable, and judge whether can be straight
Obtain the up transmitting lead Tadv for taking current area；
If it is judged that being yes, the Tadv of current area described in direct access is calculated according to the Tadv of the current area and worked as
The final up transmission timing of front cell, and current cell information is stored in the second variable；
If it is judged that being no, directly the current cell information is stored in the second variable, judge first variable
It is whether identical with second variable, if identical, the final up transmission of current area is calculated according to the Tadv of previous cell
Regularly, if it is not the same, obtaining the descending timing difference of previous cell and current area, and according to the descending timing difference to described
The Tadv of previous cell is adjusted, and obtains the Tadv of current area, and according to the Tadv of the current area current area is calculated
It is final up transmission timing；And
Cell information in second variable is updated in first variable；
Wherein, the final up transmission timing for calculating current area according to the Tadv of the current area includes：
The final up transmission timing of the current area is calculated according to formula 1：
TX_Timing=Timing-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Timing sends timing for the final up of current area, and Timing is true according to descending timing and frame structure
Fixed up timing, TX_HW_Delay is hardware handles delay；
Wherein, the Tadv of previous cell is adjusted according to the descending timing difference, obtaining the Tadv of current area includes：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be the descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
2. the method for claim 1, wherein
The scene for carrying out uplink synchronous is needed to include：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback, cut
Change, direct-cut operation failure rollback and bimodulus handoff failure rollback；
Being capable of the scene of the Tadv of direct access current area includes：Initial link setup and direct-cut operation；
First variable and the second variable identical scene include：Reconfigure；
First variable scene different with second variable includes：Baton handover, the failure of baton handover rollback, direct-cut operation
Failure rollback and bimodulus handoff failure rollback.
3. the method for claim 1, wherein the Tadv of current area described in direct access includes：
The Tadv of current area according to the UPpos acquisition of information carried in physical access channel FPACH.
4. uplink synchronous adjusting apparatus in a kind of TDD system, including：Storage judge module, the first storage calculate mould
Block, the second storage computing module and update module；Wherein,
The storage judge module is arranged to：When it is determined that needing to carry out uplink synchronous, previous cell information is stored in into first
In variable, and judge whether to be capable of the up transmitting lead Tadv of direct access current area, if it is judged that being yes, adjust
With the described first storage computing module, if it is judged that being no, then the second storage computing module is called；
The first storage computing module is arranged to：The Tadv of current area described in direct access, according to the current area
Tadv calculates the final up transmission timing of current area, and current cell information is stored in the second variable, calls described
Update module；
The second storage computing module is arranged to：Directly current cell information is stored in the second variable, described the is judged
Whether one variable and second variable identical, if identical, according to the Tadv of previous cell calculate current area it is final on
Row sends timing, if it is not the same, the descending timing difference of previous cell and current area is obtained, and according to the descending timing difference
The Tadv of previous cell is adjusted, the Tadv of current area is obtained, calculates current little according to the Tadv of the current area
The final up transmission timing in area, calls the update module；And
The update module is arranged to：Cell information in second variable is updated in first variable；
Wherein, the first storage computing module and the second storage computing module are arranged to as follows according to described
The Tadv of current area calculates the final up transmission timing of current area：
The final up transmission timing of current area is calculated according to formula 1：
TX_Timing=Timing-Tadv-TX_HW_Delay formula 1；
Wherein, TX_Timing sends timing for the final up of current area, and Timing is true according to descending timing and frame structure
Fixed up timing, TX_HW_Delay is hardware handles delay；
Wherein, the second storage computing module is arranged to as follows according to the descending timing difference to previous cell
Tadv is adjusted, and obtains the Tadv of current area：
The Tadv of previous cell is adjusted according to formula 2, obtains the Tadv of current area；
TadvCurrent area=TadvPrevious cell+ 2*OTD formula 2；
Wherein, OTD be the descending timing difference, TadvPrevious cellFor the Tadv of previous cell, TadvCurrent areaFor current area
Tadv。
5. device as claimed in claim 4, wherein,
The scene for carrying out uplink synchronous is needed to include：Initial link setup, reconfigure, baton handover, the failure of baton handover rollback, cut
Change, direct-cut operation failure rollback and bimodulus handoff failure rollback；
Being capable of the scene of the Tadv of direct access current area includes：Initial link setup and direct-cut operation；
First variable and the second variable identical scene include：Reconfigure；
First variable scene different with second variable includes：Baton handover, the failure of baton handover rollback, direct-cut operation
Failure rollback and bimodulus handoff failure rollback.
6. device as claimed in claim 4, wherein, the first storage computing module is arranged to directly obtain as follows
Take the Tadv of the current area：
The Tadv of current area according to the UPpos acquisition of information carried in physical access channel FPACH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201380052749.4A CN104737601B (en) | 2012-10-09 | 2013-09-17 | Method and device for adjusting uplink synchronization in time division duplexing system |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210379499.2A CN103716872B (en) | 2012-10-09 | 2012-10-09 | Uplink synchronous method of adjustment and device in TDD system |
| CN2012103794992 | 2012-10-09 | ||
| CN201380052749.4A CN104737601B (en) | 2012-10-09 | 2013-09-17 | Method and device for adjusting uplink synchronization in time division duplexing system |
| PCT/CN2013/083633 WO2014056388A1 (en) | 2012-10-09 | 2013-09-17 | Method and device for adjusting uplink synchronization in time division duplexing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104737601A CN104737601A (en) | 2015-06-24 |
| CN104737601B true CN104737601B (en) | 2017-05-03 |
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|---|---|---|---|
| CN201210379499.2A Active CN103716872B (en) | 2012-10-09 | 2012-10-09 | Uplink synchronous method of adjustment and device in TDD system |
| CN201380052749.4A Active CN104737601B (en) | 2012-10-09 | 2013-09-17 | Method and device for adjusting uplink synchronization in time division duplexing system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210379499.2A Active CN103716872B (en) | 2012-10-09 | 2012-10-09 | Uplink synchronous method of adjustment and device in TDD system |
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| Country | Link |
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| CN (2) | CN103716872B (en) |
| HK (1) | HK1208984A1 (en) |
| WO (1) | WO2014056388A1 (en) |
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| CN103716872B (en) * | 2012-10-09 | 2017-11-10 | 中兴通讯股份有限公司 | Uplink synchronous method of adjustment and device in TDD system |
| CN107438285B (en) * | 2016-05-27 | 2020-01-17 | 普天信息技术有限公司 | Uplink synchronization adjustment method and device |
| CN111049614B (en) * | 2018-10-12 | 2021-08-10 | 中国移动通信有限公司研究院 | Remote interference back-off method and base station |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937832A (en) * | 2005-09-19 | 2007-03-28 | 上海原动力通信科技有限公司 | Layering community mobile communication system switching method |
| CN101043256A (en) * | 2006-03-23 | 2007-09-26 | 大唐移动通信设备有限公司 | User access method for TDD mode |
| CN101494496A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Method for holding ascending synchronization of customer equipment |
| CN101772093A (en) * | 2008-12-31 | 2010-07-07 | 华为技术有限公司 | User uplink and downlink out-of-step switching method and device |
| WO2010108549A1 (en) * | 2009-03-27 | 2010-09-30 | Nokia Siemens Networks Oy | Apparatus, method and article of manufacture |
| CN103716872A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | upper link synchronization adjusting method and device in TDD system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426704C (en) * | 2002-06-06 | 2008-10-15 | 华为技术有限公司 | Method for ralizing synchronization in TDD radio communication system |
| CN101039154B (en) * | 2006-03-15 | 2010-08-25 | 联芯科技有限公司 | Method for obtaining transceiver channel transmission time of user terminal |
| CN101753202A (en) * | 2010-01-07 | 2010-06-23 | 中兴通讯股份有限公司 | Up synchronous method and terminal. |
| CN102469570B (en) * | 2010-11-11 | 2014-11-26 | 大唐移动通信设备有限公司 | Information notification and timing advance (TA) obtaining method, system and equipment thereof |
| CN102281626B (en) * | 2011-07-06 | 2013-10-02 | 电信科学技术研究院 | Method and device for determining uplink timing advance |
-
2012
- 2012-10-09 CN CN201210379499.2A patent/CN103716872B/en active Active
-
2013
- 2013-09-17 WO PCT/CN2013/083633 patent/WO2014056388A1/en active Application Filing
- 2013-09-17 CN CN201380052749.4A patent/CN104737601B/en active Active
-
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- 2015-09-25 HK HK15109473.0A patent/HK1208984A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937832A (en) * | 2005-09-19 | 2007-03-28 | 上海原动力通信科技有限公司 | Layering community mobile communication system switching method |
| CN101043256A (en) * | 2006-03-23 | 2007-09-26 | 大唐移动通信设备有限公司 | User access method for TDD mode |
| CN101494496A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Method for holding ascending synchronization of customer equipment |
| CN101772093A (en) * | 2008-12-31 | 2010-07-07 | 华为技术有限公司 | User uplink and downlink out-of-step switching method and device |
| WO2010108549A1 (en) * | 2009-03-27 | 2010-09-30 | Nokia Siemens Networks Oy | Apparatus, method and article of manufacture |
| CN103716872A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | upper link synchronization adjusting method and device in TDD system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103716872B (en) | 2017-11-10 |
| CN103716872A (en) | 2014-04-09 |
| HK1208984A1 (en) | 2016-03-18 |
| CN104737601A (en) | 2015-06-24 |
| WO2014056388A1 (en) | 2014-04-17 |
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