CN106376075A - Time adjusting method and apparatus for uplink - Google Patents
Time adjusting method and apparatus for uplink Download PDFInfo
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- CN106376075A CN106376075A CN201510427522.4A CN201510427522A CN106376075A CN 106376075 A CN106376075 A CN 106376075A CN 201510427522 A CN201510427522 A CN 201510427522A CN 106376075 A CN106376075 A CN 106376075A
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- timing difference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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Abstract
The invention provides a time adjusting method and apparatus for an uplink. The method comprises: first downlink timing differences, relative to a timing reference cell in a timing advance group (TAG), of all cells included by the TAG are obtained; according to the first downlink timing differences of all cells, a second downlink timing difference of a current sub frame relative to the timing reference cell is obtained; and on the basis of the second downlink timing difference of the current sub frame, an uplink time timing advance of a cell that is included by the TAG and has an uplink carrier is calculated. With the method and apparatus, a problem that arrival time of downlink signals of different cells in a same TAG is different due to relative position changing of the cells in the TAG and UE or improper cell division in the TAG and thus uplinks of other cells can not have the same timing accuracy because the uplinks use a new timing advance from the timing reference cell can be solved, thereby guaranteeing that the uplinks have the same timing accuracy. Therefore, performance parameters of cells are improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of uplink temporal method of adjustment and device.
Background technology
In the lte system supporting carrier aggregation, evolution base station (evolved nodeb, referred to as enb) can be
User equipment (user equipment, referred to as ue) distribute multiple Serving cells, and one of them is as main plot (primary
Cell, referred to as pcell), other as secondary cell (secondary cell, referred to as scell).
Ue is in order to safeguard different time adjustment amounts (timing advance, referred to as ta) in different cells
Value, the cell of identical ta value belongs to same ta group (ta group, referred to as tag).In this multiple cell, many
The scene of tag, under ue with enb uplink sync status, in multiple cells of each tag, only one of which cell
It is referred to as timing reference cell, ue was adjusted by the timing reference cell acquisition time to be ordered (ta command, referred to as
tac).This tac is used for the physical uplink channel in all cells of timing reference cell place tag, including physics
Ascending control channel (physical uplink control channel, referred to as pucch), Physical Uplink Shared Channel
(physical uplink shared channel, referred to as pusch) or detection reference signal (sounding reference
Signal, abbreviation srs) time adjustment.
In the regular traffic stage, ue carries time adjustment index ta from the tac that timing reference cell receives, ta's
Scope is 0～63 integer.Current time adjustment amount ntaold and ta that ue is safeguarded by oneself obtains the new time
Adjustment amount, is denoted as ntanew, ntanew=ntaold+ (ta-31) * 16.
If ue receives the corresponding tac of tag in subframe n, then this ue is at back to back subframe mod (n+6,10)
Using new time adjustment amount ntanew.
In this process, a tag has up-link if there are two or more cells, then the institute of this tag
Up-link is had all to carry out the time adjustment of up-link using the ntanew from timing reference cell.If should
It is pcell that cell in tag has one, then pcell is timing reference cell.
In the related, if due to cell and the change of ue relative position in tag, or little Division in tag
Improper, the downstream signal that may result in different districts in a tag is variant for the time of advent, then upper exercise
Ntanew for self-timing reference cell cannot ensure that other cell uplinks have identical timing accuracy, and
The estate performance of timing accuracy loss also can receive impact.
For in correlation technique, in tag, cell and ue relative position change, or not the conforming to of little Division in tag
Suitable lead to the downstream signal of different districts in a tag to have differences the time of advent, and up-link is using carrying out self-timing
The new time adjustment amount of reference cell it cannot be guaranteed that other cell uplinks have the problem of identical timing accuracy, and
Effective solution is not proposed.
Content of the invention
The invention provides a kind of uplink temporal method of adjustment and device, at least to solve in tag in correlation technique
Cell is changed with ue relative position, or in tag, the improper of little Division leads to different districts in a tag
Downstream signal has differences the time of advent, and up-link can not using the new time adjustment amount from timing reference cell
Ensure that other cell uplinks have the problem of identical timing accuracy.
According to an aspect of the invention, it is provided a kind of uplink temporal method of adjustment, comprising: obtain time adjustment
Each cell included by amount group tag is with respect to first of the timing reference cell in described tag the descending timing difference；Root
Obtain present sub-frame according to the first descending timing difference of each cell described descending with respect to the second of described timing reference cell
Timing difference；According to the second descending timing difference of described present sub-frame, calculate, included by described tag, there is up-link carrier
Cell uplink temporal adjustment amount.
Alternatively, each cell included by acquisition time adjustment amount group tag is with respect to the timing reference in described tag
First descending timing difference of cell includes: obtains the downstream signal time of advent of each cell included by described tag；
Described first descending timing difference is obtained the time of advent according to described downstream signal.
Alternatively, the downstream signal obtaining each cell included by described tag includes the time of advent: it is described fixed to calculate
When reference cell corresponding cell reference signals descending when inclined；According to described descending when partially revise downstream signal time of advent,
Obtain revised described downstream signal time of advent.
Alternatively, include after obtaining the downstream signal time of advent of each cell included by described tag: detection institute
State the credibility of the downstream signal time of advent；Reach in the case of incredible, abandoning described downstream signal in testing result
Time.
Alternatively, described first descending timing difference is the described downstream signal time of advent and described timing reference cell descending letter
The difference of number time of advent.
Alternatively, present sub-frame is obtained according to the first descending timing difference of each cell described little with respect to described timing reference
The second descending timing difference in area includes: the described first descending timing difference that up-to-date one-shot measurement is obtained is set to described second
Descending timing difference.
Alternatively, present sub-frame is obtained according to the first descending timing difference of each cell described little with respect to described timing reference
The second descending timing difference in area includes: judges whether present sub-frame carries out the measurement of the first descending timing difference, in judged result
In the case of no, described in previous subframe measurement that the described second descending timing difference is set to described present sub-frame obtains
Second descending timing difference；In the case of being to be in judged result, obtain described present sub-frame to the described first descending timing difference
Measure the measurement result obtaining；First assignment algorithm is passed through according to described measurement result and obtains the described second descending timing
Difference.
Alternatively, the second descending timing difference according to described present sub-frame, calculate described tag included by have up
The uplink temporal adjustment amount of the cell of carrier wave includes: obtains time adjustment order tac by described tag, and obtains
Take the time adjustment amount ta carrying in described tac；Obtain current time uplink temporal adjustment amount；According to described ta,
Described current time uplink temporal adjustment amount and described second descending timing difference pass through described in the second assignment algorithm calculating
Uplink temporal adjustment amount.
According to a further aspect in the invention, there is provided a kind of uplink temporal adjusting apparatus, comprising: the first acquisition module,
For obtaining each cell included by time adjustment amount group tag with respect to of the timing reference cell in described tag
One descending timing difference；Second acquisition module, obtains present sub-frame for the first descending timing difference according to each cell described
With respect to the second of described timing reference cell the descending timing difference；Computing module, for second according to described present sub-frame
Descending timing difference, calculates the uplink temporal adjustment amount of the cell with up-link carrier included by described tag.
Alternatively, described first acquisition module includes: first acquisition unit, each included by described tag for obtaining
The downstream signal time of advent of individual cell；Second acquisition unit, for according to the acquisition time of advent of described downstream signal
First descending timing difference.
Alternatively, described first acquisition unit includes: computation subunit, corresponding for calculating described timing reference cell
Cell reference signals descending when inclined；Obtain subelement, for according to described descending when partially revise downstream signal time of advent,
Obtain revised described downstream signal time of advent.
Alternatively, described first acquisition module also includes: detector unit, for detecting described downstream signal time of advent
Credibility；Discarding unit, in testing result in the case of incredible, abandoning described downstream signal time of advent.
Alternatively, described first descending timing difference is the described downstream signal time of advent and described timing reference cell descending letter
The difference of number time of advent.
Alternatively, described second acquisition module includes: the first arranging unit, described in obtaining up-to-date one-shot measurement
First descending timing difference is set to the described second descending timing difference.
Alternatively, described second acquisition module includes: the second arranging unit, for judging whether present sub-frame carries out first
The measurement of descending timing difference, in judged result in the case of no, the described second descending timing difference being set to described current
The described second descending timing difference that the previous subframe measurement of subframe obtains；3rd acquiring unit, for being yes in judged result
In the case of, obtain described present sub-frame and the measurement result obtaining is measured to the described first descending timing difference；According to institute
State measurement result and pass through first assignment algorithm acquisition the described second descending timing difference.
Alternatively, described computing module includes: the 4th acquiring unit, for obtaining time adjustment life by described tag
Make tac, and obtain the time adjustment amount ta carrying in described tac；5th acquiring unit, for obtaining current time
Uplink temporal adjustment amount；Computing unit, for according to described ta, the adjustment of described current time uplink temporal
Amount and described second descending timing difference pass through the second assignment algorithm and calculate described uplink temporal adjustment amount.
By the present invention, using each cell obtaining included by time adjustment amount group tag with respect to the timing in tag
First descending timing difference of reference cell；Present sub-frame is obtained with respect to timing according to the first descending timing difference of each cell
Second descending timing difference of reference cell；According to the second descending timing difference of this present sub-frame, calculate included by this tag
The cell with up-link carrier uplink temporal adjustment amount, solve cell and ue in tag in correlation technique
Relative position changes, or in tag, the improper downstream signal leading to different districts in a tag of little Division reaches
Time has differences, and up-link using the new time adjustment amount from timing reference cell it cannot be guaranteed that in other cells
Line link has the problem of identical timing accuracy, and then achieves and ensure that up-link has identical timing accuracy, improves
The effect of estate performance parameter.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explaining the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of uplink temporal adjustment according to embodiments of the present invention；
Fig. 2 is the structured flowchart of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 3 is the structured flowchart () of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 4 is the structured flowchart (two) of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 5 is the structured flowchart (three) of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 6 is the structured flowchart (four) of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 7 is the structured flowchart (five) of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 8 is the structured flowchart (six) of uplink temporal adjusting apparatus according to embodiments of the present invention；
Fig. 9 is uplink temporal method of adjustment flow chart () according to embodiments of the present invention.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings do not conflicted
Under condition, the embodiment in the application and the feature in embodiment can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second "
Etc. being for distinguishing similar object, without for describing specific order or precedence.
Provide a kind of uplink temporal method of adjustment in the present embodiment, Fig. 1 is according to embodiments of the present invention up
The flow chart of Link Time adjustment, as shown in figure 1, this flow process comprises the steps:
Step s102, each cell included by acquisition time adjustment amount group tag is with respect to the timing reference in tag
First descending timing difference of cell；
Step s104, obtains present sub-frame with respect to timing reference cell according to the first descending timing difference of each cell
Second descending timing difference；
Step s106, according to the second descending timing difference of present sub-frame, calculates and has up-link carrier included by this tag
Cell uplink temporal adjustment amount.
By above-mentioned steps, according to each cell downlink time of arrival (toa), measurement obtains each cell in tag to ue
Descending timing difference, to each cell in tag, ue processes to the descending timing difference not obtained in the same time, draws current
Descending timing difference after the process of subframe；To in tag, each has the cell of up-link carrier to ue, calculates uplink temporal and adjusts
Whole amount, solves cell and ue relative position in tag in correlation technique and changes, or in tag, little Division does not conform to
Suitable lead to the downstream signal of different districts in a tag to have differences the time of advent, and up-link is using carrying out self-timing
The new time adjustment amount of reference cell is it cannot be guaranteed that other cell uplinks have the problem of identical timing accuracy.Compare
In correlation technique, the time adjustment amount of acquisition does not consider whether the division of cell is reasonable, and ue is relative with cell
Whether position changes, and above-mentioned steps achieve and ensure that up-link has identical timing accuracy, improve estate performance ginseng
The effect of number.
Each cell included by acquisition time adjustment amount group tag that above-mentioned steps s102 are related to is with respect in tag
Timing reference cell the first descending timing difference, in an optional embodiment, can be but be not restricted to that passing through
Following methods obtain the first descending timing difference: obtain the downstream signal time of advent of each cell included by this tag,
First descending timing difference is obtained the time of advent according to this downstream signal.
The downstream signal time of advent of each cell included by above-mentioned acquisition tag, in one alternate embodiment,
Calculate the corresponding cell reference signals in this timing reference cell descending when partially, according to descending when partially revise downstream signal and reach
Time, obtain revised this downstream signal time of advent.
In order to ensure the credibility of downstream signal time of advent of each cell included by this tag, after participating in
The calculating of continuous step, in an optional embodiment, in the descending letter of each cell obtaining included by this tag
The credibility of this downstream signal time of advent also will be detected after number time of advent, in testing result in the case of incredible,
Abandon this downstream signal time of advent.
In an optional embodiment, the first descending timing difference that above-mentioned steps are related to is the downstream signal time of advent
Difference with the timing reference cell downstream signal time of advent.
Above-mentioned steps s104 are related to obtain present sub-frame with respect to timing ginseng according to the first descending timing difference of each cell
Examine the second descending timing difference of cell, in an optional embodiment, can be but be not restricted to that in the following manner
To obtain: this first descending timing difference that up-to-date one-shot measurement is obtained is set to this second descending timing difference.Or judge
Whether present sub-frame carries out the measurement of the first descending timing difference, in judged result in the case of no, this is second descending fixed
The time difference is set to this second descending timing difference that the previous subframe measurement of this present sub-frame obtains.In another alternative embodiment
In, in the case of being to be in judged result, obtain this present sub-frame and the survey obtaining is measured to this first descending timing difference
Amount result, obtains this second descending timing difference according to this measurement result by the first assignment algorithm.
Above-mentioned steps s106 are related to the second descending timing difference according to present sub-frame, calculate having included by this tag
The uplink temporal adjustment amount of the cell of up-link carrier, in an optional embodiment, can be in the following manner
To calculate, time adjustment order tac to be obtained by tag, and obtains the time adjustment amount ta carrying in this tac,
Obtain current time uplink temporal adjustment amount, according to this ta, this current time uplink temporal adjustment amount and should
Second descending timing difference calculates this uplink temporal adjustment amount by the second assignment algorithm.With it, ensure that
The accuracy of different districts uplink temporal adjustment in same tag.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment
Method can realize by the mode of software plus necessary general hardware platform naturally it is also possible to pass through hardware, but a lot
In the case of the former is more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
Have what technology contributed partly can embody in the form of software product, this computer software product is stored in one
In storage medium (as rom/ram, magnetic disc, CD), including some instructions with so that a station terminal equipment (can
To be mobile phone, computer, server, or the network equipment etc.) method described in execution each embodiment of the present invention.
Additionally provide a kind of uplink temporal adjusting apparatus in the present embodiment, this device be used for realizing above-described embodiment and
Preferred implementation, had carried out repeating no more of explanation.As used below, term " module " can be realized
The software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably to be realized with software,
But hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
Fig. 2 is the structured flowchart of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in Fig. 2 this dress
Put including first acquisition module 22, for obtaining each cell included by time adjustment amount group tag with respect to this tag
In timing reference cell the first descending timing difference；Second acquisition module 24, under first according to this each cell
Row timing difference obtains present sub-frame with respect to the second of this timing reference cell the descending timing difference；Computing module 26, for root
According to the second descending timing difference of this present sub-frame, calculate the uplink of the cell with up-link carrier included by this tag
Road time adjustment amount.
Fig. 3 is the structured flowchart () of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in figure 3,
The first acquisition module 22 in this device includes: first acquisition unit 222, for obtain included by this tag each
The downstream signal time of advent of cell；Second acquisition unit 224, for according to this downstream signal obtain the time of advent this
One descending timing difference.
Fig. 4 is the structured flowchart (two) of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in figure 4,
The first acquisition unit 222 being related in this device also includes: computation subunit 2222, little for calculating this timing reference
The corresponding cell reference signals in area descending when inclined；Obtain subelement 2224, for according to this descending when partially revise descending letter
Number time of advent, obtain revised this downstream signal time of advent.
Fig. 5 is the structured flowchart (three) of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in figure 5,
The first acquisition module 22 being related in this device also includes: detector unit 226, during for detecting that this downstream signal reaches
Between credibility；Discarding unit 228, for reaching in the case of incredible, abandoning this downstream signal in testing result
Time.
Alternatively, when the first descending timing difference is this downstream signal time of advent and this timing reference cell downstream signal arrival
Between difference.
Fig. 6 is the structured flowchart (four) of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in fig. 6,
The second acquisition module 24 being related in this device includes: the first arranging unit 242, for obtaining up-to-date one-shot measurement
This first descending timing difference be set to this second descending timing difference.
Fig. 7 is the structured flowchart (five) of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in fig. 7,
The second acquisition module 24 being related in this device includes: the second arranging unit 244, for judging whether present sub-frame enters
The measurement of the descending timing difference of row first, in judged result in the case of no, this second descending timing difference being set to deserve
This second descending timing difference that the previous subframe measurement of front subframe obtains；3rd acquiring unit 246, in judged result
In the case of being, obtain this present sub-frame and the measurement result obtaining is measured to this first descending timing difference；According to this
Measurement result obtains this second descending timing difference by the first assignment algorithm.
Fig. 8 is the structured flowchart (six) of uplink temporal adjusting apparatus according to embodiments of the present invention, as shown in figure 8,
In addition to including all modules included by Fig. 2, computing module 26 therein also includes this device: the 4th acquiring unit
262, for time adjustment order tac is obtained by this tag, and obtain the time adjustment amount ta carrying in this tac；
5th acquiring unit 264, for obtaining current time uplink temporal adjustment amount；Computing unit 266, for basis
This ta, this current time uplink temporal adjustment amount and this second descending timing difference pass through the second assignment algorithm calculating should
Uplink temporal adjustment amount.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong
Cross in the following manner to realize, but not limited to this: above-mentioned module is respectively positioned in same processor；Or, above-mentioned module position respectively
In multiple processors.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
To be arranged to store for executing the program code of following steps:
S1, obtains each cell included by time adjustment amount group tag with respect to the of the timing reference cell in tag
One descending timing difference；
S2, obtains present sub-frame according to the first descending timing difference of each cell descending with respect to the second of timing reference cell
Timing difference；
S3, according to the second descending timing difference of present sub-frame, calculates the cell with up-link carrier included by this tag
Uplink temporal adjustment amount.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to: u disk, read only memory (rom,
Read-only memory), random access memory (ram, random access memory), portable hard drive,
Magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor executes above-mentioned s1, s2 according to the program code of storage in storage medium
And s3.
Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment
Example, the present embodiment will not be described here.
In order to provide a kind of uplink temporal adjustment mode, the up-link improving multiple cells in same tag is fixed
When accuracy, the method and apparatus that alternative embodiment of the present invention provides a kind of adjustment of uplink temporal.Wherein, provide
A kind of uplink temporal method of adjustment, the method includes: ue, according to each cell downlink time of arrival (toa), surveys
Measure the descending timing difference of each cell in tag；To each cell in tag, under ue is not to obtaining in the same time
Row timing difference processes, and draws descending timing difference after the process of present sub-frame；To in tag, each has up-link carrier to ue
Cell, calculates uplink temporal adjustment amount.
Embodiment one
Fig. 9 is uplink temporal method of adjustment flow chart () according to embodiments of the present invention, as shown in figure 9, should
Flow chart specifically includes following steps:
Step s901:ue obtains under each cell in tag according to each cell downlink time of arrival (toa), measurement
Row timing difference.
Ue obtains the downstream signal time of advent of each cell in tag, needs to detect downlink synchronous signal.
Further, ue can carry out descending time offset estimation by cell reference signals, under calculating in reference signal
Inclined during row.With partially revising the time of advent to downstream signal when this, obtain revised downstream signal time of advent.
Further, can be to measuring the downstream signal time of advent (or revise downstream signal time of advent) obtaining every time
Do confidence level detection, if measurement is insincere, abandon this measurement result, be not involved in subsequent step and calculate；If surveyed
Amount is credible, then measured value is used for subsequent step and calculates.
The downstream signal time of advent (or the downstream signal time of advent revised) that ue passes through each cell in tag deducts
The respective value of timing reference cell, calculates the descending timing difference of each cell relative timing reference cell, is denoted as
T_dl (i, k), i=0～n-1, wherein i are the cell index in tag, and n represents the cell number in tag, and k is subframe
Index, k=10*sfn+sf, sfn are System Frame Numbers, and sf is subframe numbers.If index of reference j represents timing reference cell,
Then t_dl (j, k)=0.
Step s902: to each cell in tag, ue processes to the descending timing difference not obtained in the same time, draws
Descending timing difference after the process of present sub-frame.
It is for each cell in tag to the process of descending timing difference, optionally including but not limited to following methods:
Method 1: to present sub-frame m, after the t_dl being obtained with up-to-date one-shot measurement (i, m1) is as the process of present sub-frame
Descending timing difference, is denoted as ta_dl, i.e. ta_dl (i, m)=t_dl (i, m1), wherein m1≤m, and if m1 < m
When, the last measurement occurs in m1, does not measure in the subframe of m1+1 to m.
Method 2: to present sub-frame m, after process, descending timing difference, is denoted as ta_dl.(1) if present sub-frame does not have
Carry out the measurement of descending timing difference, then ta_dl (i, m)=ta_dl (i, m1), wherein m1 < m, and the last measurement
Occur in m1, do not measure in the subframe of m1+1 to m.(2) if if present sub-frame carried out descending fixed
The measurement of the time difference, that is, have t_dl (i, m), then ta_dl (i, m)=(1-a) * ta_dl (i, m-1)+a*t_dl (i, m), wherein
A is smoothing factor, and span is 0～1 real number.Particularly, if a=1, method 2 and method 1 do not have area
Not.
For timing reference cell j, ta_dl (j, m)=0.
To in tag, each has the cell of up-link carrier to step s903:ue, calculates uplink temporal adjustment amount.
When ue adjusts launch time to physical uplink channel in each cell in tag, adjustment amount should consider this
The current time adjustment amount ntaold that tac and ue that tag receives safeguards, after also will considering the process of each cell
Descending timing difference.
In subframe m, the final time adjustment amount ntanew of ue is calculated as follows:
If the unit of ta_dl is consistent with ntaold, ntanew (v)=ntaold+ (ta-31)
*16+ta_dl(v,m)；If the unit of ta_dl is consistent with ta, ntanew (v)=ntaold+ (ta-31)
*16+ta_dl(v,m)*16.Wherein v is the corresponding index in non-timing reference cell, v=0～n-1.
For timing reference cell j, due to ta_dl (j, m)=0, then ntanew (j)=ntaold+ (ta-31) * 16.
Update ntaold with then ntanew (j).
This adjustment amount came into force in the m+6 moment.
In sum, by the present invention, using each cell obtaining included by time adjustment amount group tag with respect to tag
In timing reference cell the first descending timing difference；Present sub-frame phase is obtained according to the first descending timing difference of each cell
The second descending timing difference for timing reference cell；According to the second descending timing difference of this present sub-frame, calculate this tag
The uplink temporal adjustment amount of the included cell with up-link carrier, solves cell in tag relative with ue
The little Division improper downstream signal time of advent leading to different districts in a tag in position change, or tag
Have differences, and up-link using the new time adjustment amount from timing reference cell it cannot be guaranteed that other cell uplink chains
There is the problem of identical timing accuracy on road, and then achieves and ensure that up-link has an identical timing accuracy, improves cell
The effect of performance parameter.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they
Storage to be executed by computing device in the storage device, and in some cases, can be to hold different from order herein
The shown or described step of row, or they are fabricated to respectively each integrated circuit modules, or will be many in them
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combine with software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the technology of this area
For personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (16)
1. a kind of uplink temporal method of adjustment is it is characterised in that include:
Each cell included by acquisition time adjustment amount group tag is with respect to the timing reference cell in described tag
The first descending timing difference；
Present sub-frame is obtained with respect to described timing reference cell according to the first descending timing difference of each cell described
The second descending timing difference；
According to the second descending timing difference of described present sub-frame, calculate the up-link carrier that has included by described tag
The uplink temporal adjustment amount of cell.
2. method according to claim 1 is it is characterised in that each included by acquisition time adjustment amount group tag is little
Area includes with respect to first of the timing reference cell in described tag the descending timing difference:
Obtain the downstream signal time of advent of each cell included by described tag；
Described first descending timing difference is obtained the time of advent according to described downstream signal.
3. method according to claim 2 is it is characterised in that obtain the descending of each cell included by described tag
Time of arrival (toa) includes:
Calculate the corresponding cell reference signals in described timing reference cell descending when inclined；
According to described descending when partially revise downstream signal time of advent, when obtaining revised described downstream signal and reaching
Between.
4. method according to claim 2 is it is characterised in that obtain the descending of each cell included by described tag
Include after time of arrival (toa):
Detect the credibility of the described downstream signal time of advent；
In testing result in the case of incredible, abandoning described downstream signal time of advent.
5. method according to claim 2 is it is characterised in that described first descending timing difference arrives for described downstream signal
Reach the difference of time and the described timing reference cell downstream signal time of advent.
6. method according to claim 1 is it is characterised in that obtain according to the first descending timing difference of each cell described
Present sub-frame is taken to include with respect to the second of described timing reference cell the descending timing difference:
The described first descending timing difference that up-to-date one-shot measurement is obtained is set to the described second descending timing difference.
7. method according to claim 1 is it is characterised in that obtain according to the first descending timing difference of each cell described
Present sub-frame is taken to include with respect to the second of described timing reference cell the descending timing difference:
Judge whether present sub-frame carries out the measurement of the first descending timing difference, in judged result in the case of no, will
It is described second descending fixed that described second descending timing difference is set to that the previous subframe measurement of described present sub-frame obtains
The time difference；
In the case of being to be in judged result, obtain described present sub-frame and the described first descending timing difference is measured
The measurement result obtaining；
First assignment algorithm is passed through according to described measurement result and obtains the described second descending timing difference.
8. method according to claim 1 is it is characterised in that according to the second descending timing difference of described present sub-frame,
The uplink temporal adjustment amount calculating the cell with up-link carrier included by described tag includes:
Time adjustment order tac is obtained by described tag, and obtains the time adjustment amount ta carrying in described tac；
Obtain current time uplink temporal adjustment amount；
Passed through according to described ta, described current time uplink temporal adjustment amount and described second descending timing difference
Second assignment algorithm calculates described uplink temporal adjustment amount.
9. a kind of uplink temporal adjusting apparatus are it is characterised in that include:
First acquisition module, for obtaining each cell included by time adjustment amount group tag with respect to described tag
In timing reference cell the first descending timing difference；
Second acquisition module, for according to the first of each cell described the descending timing difference obtain present sub-frame with respect to
Second descending timing difference of described timing reference cell；
Computing module, for the second descending timing difference according to described present sub-frame, calculates included by described tag
There is the uplink temporal adjustment amount of the cell of up-link carrier.
10. device according to claim 9 is it is characterised in that described first acquisition module includes:
First acquisition unit, for obtaining the downstream signal time of advent of each cell included by described tag；
Second acquisition unit, for obtaining the described first descending timing difference the time of advent according to described downstream signal.
11. devices according to claim 10 are it is characterised in that described first acquisition unit includes:
Computation subunit, for calculate the corresponding cell reference signals in described timing reference cell descending when inclined；
Obtain subelement, for according to described descending when partially revise downstream signal time of advent, obtain revised institute
State downstream signal time of advent.
12. devices according to claim 10 are it is characterised in that described first acquisition module also includes:
Detector unit, for detecting the credibility of the described downstream signal time of advent；
Discarding unit, in testing result in the case of incredible, abandoning described downstream signal time of advent.
13. devices according to claim 10 are it is characterised in that described first descending timing difference is described downstream signal
The difference of the time of advent and the described timing reference cell downstream signal time of advent.
14. devices according to claim 9 are it is characterised in that described second acquisition module includes:
First arranging unit, the described first descending timing difference for obtaining up-to-date one-shot measurement is set to described
Two descending timing differences.
15. devices according to claim 9 are it is characterised in that described second acquisition module includes:
Second arranging unit, for judging whether present sub-frame carries out the measurement of the first descending timing difference, is judging knot
In the case that fruit is no, the previous subframe measurement that the described second descending timing difference is set to described present sub-frame obtains
The described second descending timing difference；
3rd acquiring unit, in the case of being to be in judged result, obtains described present sub-frame to described first
Descending timing difference measures the measurement result obtaining；First assignment algorithm is passed through according to described measurement result and obtains institute
State the second descending timing difference.
16. devices according to claim 9 are it is characterised in that described computing module includes:
4th acquiring unit, for obtaining time adjustment order tac by described tag, and obtains in described tac
The time adjustment amount ta carrying；
5th acquiring unit, for obtaining current time uplink temporal adjustment amount；
Computing unit, for according to described ta, described current time uplink temporal adjustment amount and described second
Descending timing difference passes through the second assignment algorithm and calculates described uplink temporal adjustment amount.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427522.4A CN106376075A (en) | 2015-07-20 | 2015-07-20 | Time adjusting method and apparatus for uplink |
| PCT/CN2016/073889 WO2017012337A1 (en) | 2015-07-20 | 2016-02-16 | Uplink time adjustment method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427522.4A CN106376075A (en) | 2015-07-20 | 2015-07-20 | Time adjusting method and apparatus for uplink |
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| CN106376075A true CN106376075A (en) | 2017-02-01 |
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| CN201510427522.4A Withdrawn CN106376075A (en) | 2015-07-20 | 2015-07-20 | Time adjusting method and apparatus for uplink |
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| CN (1) | CN106376075A (en) |
| WO (1) | WO2017012337A1 (en) |
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| WO2018202116A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Communication method, network device and terminal device |
| WO2019041761A1 (en) * | 2017-08-30 | 2019-03-07 | 华为技术有限公司 | Dynamic time adjustment method, apparatus and system |
| WO2019192486A1 (en) * | 2018-04-04 | 2019-10-10 | 中兴通讯股份有限公司 | Timing method and apparatus for communication link, communication node device, and computer storage medium |
| WO2024065194A1 (en) * | 2022-09-27 | 2024-04-04 | Zte Corporation | Timing adjustment techniques for uplink transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572877B (en) * | 2017-11-17 | 2020-11-10 | 华为技术有限公司 | Method and device for sending and receiving information |
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| CN102196552A (en) * | 2010-03-17 | 2011-09-21 | 中兴通讯股份有限公司 | Method and system for uplink synchronization of multiple terminals |
| WO2011124010A1 (en) * | 2010-04-06 | 2011-10-13 | 上海贝尔股份有限公司 | Method and device for timing advance in carrier aggregation wireless network |
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| CN101790188A (en) * | 2009-01-24 | 2010-07-28 | 华为技术有限公司 | Time offset adjusting method and user terminal |
| CN102196552A (en) * | 2010-03-17 | 2011-09-21 | 中兴通讯股份有限公司 | Method and system for uplink synchronization of multiple terminals |
| WO2011124010A1 (en) * | 2010-04-06 | 2011-10-13 | 上海贝尔股份有限公司 | Method and device for timing advance in carrier aggregation wireless network |
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| WO2018202116A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Communication method, network device and terminal device |
| WO2019041761A1 (en) * | 2017-08-30 | 2019-03-07 | 华为技术有限公司 | Dynamic time adjustment method, apparatus and system |
| US11025362B2 (en) | 2017-08-30 | 2021-06-01 | Huawei Technologies Co., Ltd. | Dynamic time adjustment method, apparatus, and system |
| WO2019192486A1 (en) * | 2018-04-04 | 2019-10-10 | 中兴通讯股份有限公司 | Timing method and apparatus for communication link, communication node device, and computer storage medium |
| WO2024065194A1 (en) * | 2022-09-27 | 2024-04-04 | Zte Corporation | Timing adjustment techniques for uplink transmission |
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| WO2017012337A1 (en) | 2017-01-26 |
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