CN102595590B - The uplink synchronisation method and device of multicarrier system - Google Patents
The uplink synchronisation method and device of multicarrier system Download PDFInfo
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- CN102595590B CN102595590B CN201210072668.8A CN201210072668A CN102595590B CN 102595590 B CN102595590 B CN 102595590B CN 201210072668 A CN201210072668 A CN 201210072668A CN 102595590 B CN102595590 B CN 102595590B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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Abstract
The invention discloses a kind of uplink synchronisation method of multicarrier system and devices.Wherein, this method comprises: terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, the specified performance parameter of each carrier wave in the secondary carrier timing group meets setting range；Terminal carries out the adjustment of uplink synchronous according to the uplink synchronous adjustment amount to the carrier wave in the secondary carrier timing group.Through the invention, uplink synchronous is carried out to each carrier wave in group using the mode of secondary carrier timing group, solve the problems, such as that uplink synchronous is realized difficult in multicarrier application scenarios, it ensure that each carrier wave of multi-carrier terminal when sending uplink signal, the signal of each carrier wave can reach base station simultaneously, and then ensure that the business of base station and terminal room.
Description
Technical field
The present invention relates to the communications fields, in particular to the uplink synchronisation method and device of a kind of multicarrier system.
Background technique
Uplink synchronous is one of the key technology of wireless communication, it specifically refers to the control of synchronization of the different terminals in base station
The respective uplink signal of the lower adjustment of system sends opportunity, enables the uplink signal for reaching base station to reach base station in synchronization and receives
On antenna port.Good uplink synchronous can reduce inter-user interference to greatest extent, and the quality of uplink synchronous performance is directly closed
It is the quality to whole system performance.
Currently, the uplink synchronous of wireless long term evolution (Long-Term Evolution, referred to as LTE) system is in this way
It realizes: firstly, base station receives the uplink signal of terminal last time transmission, estimating end path delay and adjustment amount, then
Adjustment amount is sent to by the control command of media access control (Media Access Control, referred to as MAC) layer
Terminal, terminal adjust the transmission opportunity of next time after receiving.For the LTE system of single carrier, the above method is more effective；But
As LTE system introduces multi-transceiver technology, in multicarrier scene, since the path delay of each carrier wave is different, base station without
The uplink that method adjusts all carrier waves using a unified time adjustment amount sends opportunity；In addition, in multicarrier scene,
Some carrier waves may be served only for uplink within a very long time, and some carrier waves may be served only for downlink, for being served only for uplink
Carrier wave, base station is after estimating its path delay because it is not used in downlink, can not directly by the carrier wave will be under adjustment amount
Issue terminal.
Difficult problem is realized for uplink synchronous in multicarrier application scenarios in the related technology, is not yet proposed at present effective
Solution.
Summary of the invention
Difficult problem is realized for uplink synchronous in multicarrier application scenarios, the present invention provides a kind of multicarrier systems
Uplink synchronisation method and device, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of uplink synchronisation method of multicarrier system, comprising: terminal obtains
The uplink synchronous adjustment amount of secondary carrier timing group；Wherein, the specified performance parameter of each carrier wave in secondary carrier timing group meets
Setting range；Terminal carries out the adjustment of uplink synchronous according to uplink synchronous adjustment amount to the carrier wave in secondary carrier timing group.
Before terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group, the above method further include: terminal is in main carrier
On receive the secondary carrier configuration information that base station issues after, above-mentioned secondary carrier is determined according to the specified performance parameter of above-mentioned secondary carrier
The secondary carrier timing group at place；Above-mentioned secondary carrier is divided into determining above-mentioned secondary carrier timing group by above-mentioned terminal, and will be upper
Secondary carrier timing group where stating secondary carrier is notified to above-mentioned base station.
Above-mentioned specified performance parameter is frequency band parameters；Above-mentioned terminal is determined according to the specified performance parameter of above-mentioned secondary carrier
Secondary carrier timing group where stating secondary carrier includes: whether above-mentioned terminal frequency band lookup according to belonging to above-mentioned secondary carrier has and deposited
Secondary carrier timing group；If so, above-mentioned terminal is by the above-mentioned secondary carrier found timing group as the auxiliary of above-mentioned secondary carrier
Carrier timing group；If not, above-mentioned terminal is that above-mentioned secondary carrier generates a new secondary carrier timing group.
Above-mentioned specified performance parameter is frequency distance parameter；Above-mentioned terminal is true according to the specified performance parameter of above-mentioned secondary carrier
Secondary carrier timing group where fixed above-mentioned secondary carrier includes: that above-mentioned terminal calculates above-mentioned secondary carrier and the timing of already present secondary carrier
The frequency distance of carrier wave in group；If the frequency distance being calculated is less than distance to a declared goal, above-mentioned terminal will be above-mentioned existing
Secondary carrier timing group of the secondary carrier timing group as above-mentioned secondary carrier；If above-mentioned secondary carrier and each already present secondary carrier
The frequency distance of carrier wave in timing group is all larger than or is equal to above-mentioned distance to a declared goal, and above-mentioned terminal is that above-mentioned secondary carrier generates one
New secondary carrier timing group.
The uplink synchronous adjustment amount that terminal obtains secondary carrier timing group includes: that above-mentioned terminal listens to above-mentioned base station and issues
After the order for activating specified secondary carrier, the random access request of above-mentioned designated carrier is sent to above-mentioned base station；Above-mentioned terminal receives
The random access response that above-mentioned base station returns, wherein above-mentioned random access response carries above-mentioned base station and connect at random according to above-mentioned
The uplink synchronous primary quantity of secondary carrier timing group where entering the determining above-mentioned secondary carrier of request；Above-mentioned terminal connects at random according to above-mentioned
Enter in response to determining that downlink signal timing value, and is determined according to above-mentioned downlink signal timing value and above-mentioned uplink synchronous primary quantity above-mentioned
The uplink synchronous adjustment amount of secondary carrier timing group.
The uplink synchronous adjustment amount that terminal obtains secondary carrier timing group includes: above-mentioned terminal determining of receiving that above-mentioned base station issues
When adjustment order, wherein above-mentioned timing adjustment command carries the synchronization primary quantity of above-mentioned secondary carrier timing group；Wherein, above-mentioned
Synchronous primary quantity is that above-mentioned base station detects delay when the uplink signal of the secondary carrier timing group of above-mentioned terminal occurs, according to above-mentioned
What the clock of uplink signal and above-mentioned inside of base station determined；Above-mentioned terminal determines that downlink signal is fixed according to above-mentioned timing adjustment command
Duration, and determine that the uplink of above-mentioned secondary carrier timing group is same according to above-mentioned downlink signal timing value and above-mentioned uplink synchronous primary quantity
Successive step amount.
Above-mentioned terminal carries out uplink synchronous to the carrier wave in above-mentioned secondary carrier timing group according to above-mentioned uplink synchronous adjustment amount
Adjustment include: that above-mentioned terminal judges in above-mentioned secondary carrier timing group with the presence or absence of reference carrier；If so, above-mentioned terminal according to
Above-mentioned uplink synchronous adjustment amount adjusts the uplink signal sending time of the reference carrier in above-mentioned secondary carrier timing group；Above-mentioned auxiliary load
Activation carrier wave in wave timing group in addition to above-mentioned reference carrier, above-mentioned terminal are sent according to the uplink signal of above-mentioned reference carrier
Time adjusts the uplink signal sending time of above-mentioned activation carrier wave；If not, above-mentioned terminal is according to above-mentioned uplink synchronous adjustment amount
The activation carrier wave in above-mentioned secondary carrier timing group is adjusted, and using above-mentioned activation carrier wave as reference carrier.
The above method can also include: the deactivation command that above-mentioned terminal receives the secondary carrier that base station issues；Above-mentioned terminal
Corresponding secondary carrier is determined according to above-mentioned deactivation command, is deleted from the secondary carrier timing group where above-mentioned corresponding secondary carrier
Above-mentioned corresponding secondary carrier；If there is no the secondary carrier of activation in the secondary carrier timing group where above-mentioned corresponding secondary carrier,
Secondary carrier timing group where the above-mentioned above-mentioned corresponding secondary carrier of terminal deletion, and notify above-mentioned base station.
Above-mentioned corresponding secondary carrier is reference carrier；Secondary carrier timing where above-mentioned terminal from above-mentioned corresponding secondary carrier
After deleting above-mentioned corresponding secondary carrier in group, the above method further include: where above-mentioned terminal from above-mentioned corresponding secondary carrier
An activation carrier wave is randomly choosed in secondary carrier timing group as new reference carrier；Alternatively, above-mentioned terminal is from above-mentioned corresponding
Selected in secondary carrier timing group where secondary carrier one with the smallest activation carrier wave of above-mentioned reference carrier clocking error as newly
Reference carrier.
According to another aspect of the present invention, a kind of uplink synchronous device of multicarrier system is provided, comprising: uplink synchronous
Adjustment amount obtains module, for obtaining the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, each in secondary carrier timing group
The specified performance parameter of carrier wave meets setting range；Uplink synchronous adjusts module, for obtaining mould according to uplink synchronous adjustment amount
The uplink synchronous adjustment amount that block obtains carries out the adjustment of uplink synchronous to the carrier wave in secondary carrier timing group.
Above-mentioned apparatus can also include: secondary carrier timing group determining module, issue for receiving base station on main carrier
Secondary carrier configuration information after, the secondary carrier timing where above-mentioned secondary carrier is determined according to the specified performance parameter of above-mentioned secondary carrier
Group；Secondary carrier timing group division module, for above-mentioned secondary carrier to be divided into what above-mentioned secondary carrier timing group determining module determined
In above-mentioned secondary carrier timing group；Notification module, the above-mentioned secondary carrier institute for dividing above-mentioned secondary carrier timing group division module
Secondary carrier timing group notice to above-mentioned base station.
Above-mentioned secondary carrier timing group determining module includes: searching unit, for being frequency band ginseng when above-mentioned specified performance parameter
When number, whether already present secondary carrier timing group is had according to frequency band lookup belonging to above-mentioned secondary carrier；First determination unit, is used for
In the case where the lookup result of above-mentioned searching unit, which is, is, it regard the above-mentioned secondary carrier found timing group as above-mentioned secondary carrier
Secondary carrier timing group；First generation unit, for being above-mentioned auxiliary in the case where the lookup result of above-mentioned searching unit is no
Carrier wave generates a new secondary carrier timing group.
Above-mentioned secondary carrier timing group determining module includes: frequency distance computing unit, for working as above-mentioned specified performance parameter
When for frequency distance parameter, the frequency distance of the carrier wave in above-mentioned secondary carrier and already present secondary carrier timing group is calculated；Second
Determination unit, for inciting somebody to action when the calculated result of said frequencies metrics calculation unit is that said frequencies distance is less than distance to a declared goal
Secondary carrier timing group of the above-mentioned already present secondary carrier timing group as above-mentioned secondary carrier；Second generation unit, for above-mentioned
The calculated result of frequency distance computing unit is the frequency of the carrier wave in above-mentioned secondary carrier and each already present secondary carrier timing group
When rate distance is all larger than or is equal to above-mentioned distance to a declared goal, a new secondary carrier timing group is generated for above-mentioned secondary carrier.
It includes: request transmitting unit that above-mentioned uplink synchronous adjustment amount, which obtains module, is issued for listening to above-mentioned base station
After the order for activating specified secondary carrier, the random access request of above-mentioned designated carrier is sent to above-mentioned base station；Receiving unit is responded,
The random access response returned for receiving above-mentioned base station, wherein above-mentioned random access response carries above-mentioned base station according to upper
The uplink of secondary carrier timing group is same where stating the above-mentioned secondary carrier that the above-mentioned random access request that request transmitting unit is sent determines
Walk primary quantity；The first adjustment amount determination unit, for true according to the received above-mentioned random access response of above-mentioned response receiving unit
Row signal timing value is fixed, and determines that above-mentioned secondary carrier is fixed according to above-mentioned downlink signal timing value and above-mentioned uplink synchronous primary quantity
When group uplink synchronous adjustment amount.
It includes: order receiving unit that above-mentioned uplink synchronous adjustment amount, which obtains module, is determined for receive that above-mentioned base station issues
When adjustment order, wherein above-mentioned timing adjustment command carries the synchronization primary quantity of above-mentioned secondary carrier timing group；Wherein, above-mentioned
Synchronous primary quantity is that above-mentioned base station detects delay when the uplink signal of the secondary carrier timing group of above-mentioned terminal occurs, according to above-mentioned
What the clock of uplink signal and above-mentioned inside of base station determined；Second adjustment amount determination unit, it is single for being received according to mentioned order
The received above-mentioned timing adjustment command of member determines downlink signal timing value, and according to above-mentioned downlink signal timing value and above-mentioned uplink
Synchronous primary quantity determines the uplink synchronous adjustment amount of above-mentioned secondary carrier timing group.
Above-mentioned uplink synchronous adjustment module includes: reference carrier judging unit, for judging in above-mentioned secondary carrier timing group
With the presence or absence of reference carrier；Time adjustment unit, when being for the judging result in above-mentioned reference carrier judging unit, according to
Above-mentioned uplink synchronous adjustment amount adjusts the uplink signal sending time of the reference carrier in above-mentioned secondary carrier timing group；Above-mentioned auxiliary load
Activation carrier wave in wave timing group in addition to above-mentioned reference carrier is adjusted according to the uplink signal sending time of above-mentioned reference carrier
The uplink signal sending time of above-mentioned activation carrier wave；Carrier wave adjustment unit, for the judgement in above-mentioned reference carrier judging unit
When structure is no, the activation carrier wave in above-mentioned secondary carrier timing group is adjusted according to above-mentioned uplink synchronous adjustment amount, and swash above-mentioned
Mobile load wave is as reference carrier.
Above-mentioned apparatus can also include: deactivation command receiving module, for receiving deactivating for secondary carrier that base station issues
Life enables；Secondary carrier removing module, for being determined according to the received above-mentioned deactivation command of above-mentioned deactivation command receiving module
Corresponding secondary carrier deletes above-mentioned corresponding secondary carrier from the secondary carrier timing group where above-mentioned corresponding secondary carrier；Auxiliary load
Wave timing group removing module, for not having the secondary carrier of activation in working as the secondary carrier timing group where above-mentioned corresponding secondary carrier
When, the secondary carrier timing group where above-mentioned corresponding secondary carrier is deleted, and notify above-mentioned base station.
Above-mentioned apparatus one of can also comprise the following modules: the first reference carrier determining module, for working as above-mentioned secondary carrier
When the above-mentioned corresponding secondary carrier that timing group removing module is deleted is reference carrier, the auxiliary load where above-mentioned corresponding secondary carrier
An activation carrier wave is randomly choosed in wave timing group as new reference carrier；Second reference carrier determining module, for working as
When the above-mentioned corresponding secondary carrier for stating secondary carrier timing group removing module deletion is reference carrier, from above-mentioned corresponding secondary carrier institute
Secondary carrier timing group in select one with the smallest activation carrier wave of above-mentioned reference carrier clocking error as new reference load
Wave.
Through the invention, uplink synchronous is carried out to each carrier wave in group using the mode of secondary carrier timing group, solved
Uplink synchronous realizes difficult problem in multicarrier application scenarios, ensure that each carrier wave of multi-carrier terminal is sending uplink signal
When, the signal of each carrier wave can reach base station simultaneously, and then ensure that the business of base station and terminal room.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of several carrier wave sets of overloading wave component in multi-carrier terminal according to an embodiment of the present invention；
Fig. 2 is the uplink synchronisation method flow chart of multicarrier system according to an embodiment of the present invention；
Fig. 3 is the schematic diagram of terminal configuration carrier wave according to an embodiment of the present invention；
Fig. 4 is carrier activation schematic diagram according to an embodiment of the present invention；
Fig. 5 is the schematic diagram that reference carrier according to an embodiment of the present invention realizes uplink timing according to downlink timing；
Fig. 6 is the schematic diagram of uplink timed maintenance according to an embodiment of the present invention；
Fig. 7 is the schematic diagram of uplink timing adjustment according to an embodiment of the present invention；
Fig. 8 is the deactivated schematic diagram of carrier wave according to an embodiment of the present invention；
Fig. 9 is the structural block diagram of the uplink synchronous device of multicarrier system according to an embodiment of the present invention；
Figure 10 is the specific block diagram of the uplink synchronous device of multicarrier system according to an embodiment of the present invention；
Figure 11 is the structural block diagram that determining module is organized in secondary carrier timing according to an embodiment of the present invention；
Figure 12 is the structural block diagram that determining module is organized in another secondary carrier timing according to an embodiment of the present invention；
Figure 13 is the structural block diagram that uplink synchronous adjustment amount according to an embodiment of the present invention obtains module；
Figure 14 is the structural block diagram that another uplink synchronous adjustment amount according to an embodiment of the present invention obtains module.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
The embodiment of the present invention realizes that uplink synchronous is illustrated mainly for multi-carrier terminal, and use as shown in Figure 1 is more
The schematic diagram of carrier terminal, the terminal support three frequency ranges, i.e. frequency range1, frequency range2, frequency range3, the width of each frequency range and center are frequently
Point has tool in International Telecommunication Union (International Telecommunications Union, referred to as ITU) specification
The regulation of body be not described in detail here；Operator is configured with several carrier waves, i.e. carrier wave in Fig. 1 in these three frequency ranges11To load
Wave32, each carrier wave is fallen in corresponding frequency range here, and carrier widths are variable, currently, meeting the variable of LTE system
Bandwidth value has 1.4Mhz, 5Mhz, 10Mhz etc..In numerous carrier waves, carrier wave21It is a special carrier wave, referred to as main carrier.
Terminal in the initial state, only works on main carrier, and base station (system side) is (referred to as auxiliary by other carrier waves by main carrier later
Carrier wave) information (including its frequency point, the information such as bandwidth) notify user equipment (User Equipment, referred to as UE, also referred to as
Make terminal), when needing terminal also to work in secondary carrier, base station is by the control command on main carrier come instruction terminal activation
Some or certain several secondary carriers.
The number and bandwidth of frequency range, carrier wave in Fig. 1 be only signal effect, engineering in practice terminal support band number by
Terminal capability determines that variable number and bandwidth can be by operators according to network deployment scheme flexible configuration.
Fig. 2 shows the uplink synchronisation method flow chart of multicarrier system according to an embodiment of the present invention, this method includes
Following steps:
Step S202, terminal obtain the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, the secondary carrier of the present embodiment is fixed
The specified performance parameter of each carrier wave of Shi Zuzhong meets setting range.
Here performance parameter can be frequency band parameters, be also possible to the frequency distance parameter etc. of two intercarriers, the property
Energy parameter is only for for different carrier waves being divided into different secondary carrier timing groups, and the embodiment of the present invention is not specifically limited.
When specific implementation, which can be indicated with TAG (TA Group, timing group), for shown in FIG. 1
Multi-carrier terminal is the example that TAG is set up according to frequency range, carrier wave11, carrier wave12And carrier wave13Belong to frequency range1, form TAG1；
Carrier wave21Form TAG2；Carrier wave31And carrier wave32Form TAG3.Carrier wave among these21Because being main carrier, there is from original state,
Therefore terminal is from being initially just assigned with TAG2 for it, and other carrier waves are as the configuration of base station is subsequent increased；And base station
Secondary carrier can also be deleted at any time, and at this moment terminal can adjust corresponding TAG, for example base station is by carrier wave31, carrier wave32It all deletes, makes
It obtains in TAG3 without carrier wave, then terminal will delete TAG3, and if only deleting carrier wave31, then in TAG3 also
Carrier wave32, need to retain.
Secondary carrier timing group in the embodiment of the present invention can be understood as above-mentioned TAG1 and TAG3.TAG referred herein
The carrier combination for referring to one group of Timing Advance having the same, for all carrier terminals in same group using it is unified when
Between lead come adjust they uplink send opportunity, base station also only to a TAG sending time adjustment order.
Step S204, terminal carry out uplink synchronous to the carrier wave in above-mentioned secondary carrier timing group according to uplink synchronous adjustment amount
Adjustment.
The present embodiment carries out uplink synchronous to each carrier wave in group using the mode of secondary carrier timing group, solves overloading
Uplink synchronous realizes difficult problem in wave application scenarios, ensure that each carrier wave of multi-carrier terminal when sending uplink signal,
The signal of each carrier wave can reach base station simultaneously, and then ensure that the business of base station and terminal room.
Above-mentioned secondary carrier timing group is just ready-portioned before terminal carries out uplink synchronous adjustment amount, and subsequent terminal exists
In moving process, when needing to carry out uplink synchronous, do not need again to be adjusted the secondary carrier timing group where secondary carrier, i.e.,
Secondary carrier belong to which secondary carrier timing group can the completion in initially configuration secondary carrier, be based on this, above-mentioned terminal obtains auxiliary
Before the uplink synchronous adjustment amount of carrier timing group, the above method further include: terminal receives what base station issued on main carrier
After secondary carrier configuration information, the secondary carrier timing group where the secondary carrier is determined according to the specified performance parameter of secondary carrier；Terminal
The secondary carrier is divided into determining secondary carrier timing group, and by the secondary carrier timing group notice where the secondary carrier to base
It stands.This carrier wave division mode can make the carrier combination of Timing Advance having the same together, meanwhile, terminal is configured with
The information of each update is notified into base station after new secondary carrier and TAG, carries out uplink synchronous convenient for terminal.
Specified performance parameter in the embodiment of the present invention is illustrated by taking frequency band parameters or frequency distance parameter as an example, for
When specified performance parameter is frequency band parameters, above-mentioned terminal determines the auxiliary load where secondary carrier according to the specified performance parameter of secondary carrier
Wave timing group can be realized using following manner: whether terminal frequency band lookup according to belonging to the secondary carrier has already present auxiliary load
Wave timing group；If so, secondary carrier timing group of the terminal by the secondary carrier found timing group as secondary carrier；If not, eventually
End is that secondary carrier generates a new secondary carrier timing group.Such as: the schematic diagram of terminal configuration carrier wave as shown in Figure 3, including with
Lower step:
Step S300, terminal receive the information about configuration secondary carrier on main carrier.
Step S302, terminal judge that the whether existing secondary carrier of the affiliated frequency band of the secondary carrier is configured；For example, terminal is sentenced first
Which frequency band is the secondary carrier of breaking fall on, and whether which has had secondary carrier to be configured.If so, executing step
S304；If otherwise, executing step S306.
Step S304, the secondary carrier that terminal is configured by the carrier wave and originally are included into the same TAG.
Step S306, terminal creates a TAG, and the carrier wave is put into new TAG.
Step S308, terminal is by the TAG information reporting of the carrier wave to base station.
Above-mentioned carrier wave configuration mode is simple and easy, convenient for operation.
Being fallen in that frequency range according to carrier wave and forming TAG is a kind of implementation method for forming TAG, can also be had other
Implementation method, for example, above-mentioned terminal is joined according to the specified performance of secondary carrier when above-mentioned specified performance parameter is frequency distance parameter
Number determine secondary carrier where secondary carrier timing group can using following manner realize: terminal calculate secondary carrier with it is already present auxiliary
The frequency distance of carrier wave in carrier timing group；If the frequency distance being calculated is less than distance to a declared goal, terminal will be existing
Secondary carrier timing group of the secondary carrier timing group as secondary carrier；If in secondary carrier and each already present secondary carrier timing group
Carrier wave frequency distance be all larger than or be equal to distance to a declared goal, terminal be secondary carrier generate a new secondary carrier timing group.Than
Such as, at a distance of how many frequency distance between the carrier wave i newly configured and any carrier wave j configured before, if be not above certain
Carrier wave i is then divided into the TAG where carrier wave j by distance, is otherwise created a TAG and is put into carrier wave i.This implementation
Using frequency distance is calculated, its reliability is high.
After terminal has configured above-mentioned secondary carrier, there is no data to transmit on this carrier wave, that is to say, that this carrier wave is
It is in dormant state, does not need to carry out uplink Timing Synchronization, terminal continues to keep listening to base station later, according to what is listened to
Content trigger carrier activation process.Carrier activation schematic diagram as shown in Figure 4, the activation are as follows:
Step S402, base station send order instruction terminal and activate some carrier wave；
It because of business, needs to activate some carrier wave, base station sends the order for activating the carrier wave at this time, and the order is suitable
In above-mentioned activation command.
Step S404 after terminal receives mentioned order, sends random access request to base station on the carrier wave；
In the random access procedure, terminal obtains the initialization of the uplink synchronous of the carrier wave, the specific steps are as follows: terminal is not
Identical random access request disconnectedly is sent to base station, until receiving the response of base station.
Further, it is all known leader sequence to terminal and base station which, which is one section, and is being sent out
The transmission of terminal each time repeats primary all raisings transmission power before comparing during sending.When terminal sends leader sequence, just like
Lower 2 kinds are possible:
The first situation, if having there is at least one carrier wave to be in activation shape in TAG belonging to the carrier wave (carrier wave A)
State, then centainly there is the carrier wave (carrier wave R) for being referred to as reference carrier in the TAG, terminal sends leader sequence on carrier wave A
The uplink of opportunity and carrier wave R to send opportunity consistent.
Second situation, if there are no carrier waves to be in state of activation in TAG belonging to carrier wave A, terminal is in carrier wave A
The upper opportunity for sending leader sequence is random.
Step S406 after base station listens to above-mentioned access request, sends random access response, while it is fixed to send initialization
When；
Further, which is placed in hair in media control messages (MAC CE (Command Element))
Send, occupy 11bit, correspondingly its value range be [0,1,2 ..., 1282], it represent timing advance value TA=[0,1,
2 ..., 1282] * Ts (Ts is the smallest chronomere in LTE system, Ts=1/ (15000*2048) second).
Step S408, terminal, which receives, to be stopped random access request after the random access response of base station and sends, and initializing should
Uplink on carrier wave sends opportunity, then starts to transmit data between base station on the carrier wave.Two kinds in corresponding step S404
Situation, the terminal of the present embodiment and base station carry out data transmission process, can specifically realize in the following way:
The first situation, for terminal when sending data on carrier wave A, uplink sends opportunity always and in affiliated TAG
Reference carrier is consistent.
Second situation, carrier wave A are the currently the only carrier waves being activated in TAG belonging to it, terminal based on the received under
Row signal timing and MAC CE adjust the timing of its uplink signal, and carrier wave A is defined as to the reference carrier of the TAG.
It will be apparent from the foregoing description that on each carrier wave of terminal initial uplink timing based on TAG, i.e., each
There was only object of reference of unique reference carrier as uplink timing, the uplink timing of other carrier waves and reference carrier in TAG
It is consistent.
Further, terminal can indicate carrier-grade by setting flag bit (index), for example index=0 is indicated
The carrier wave is the reference carrier of affiliated TAG.It can also be indicated by index value preferably for the non-reference carrier wave being activated
Its grade (such as index=1,2,3 etc.) with indicate the clocking error relationship between the carrier wave of the grade and reference carrier (such as
Index is smaller to indicate that the clocking error between the carrier wave and reference carrier is smaller).The benefit that index value is arranged is can to deactivate
Replacer is found in time when reference carrier living.More due to the clocking error of the remoter carrier wave of distance reference carrier wave distance between the two
Greatly, terminal can define index value according to the distance between carrier wave and reference carrier.Based on this, in above-mentioned steps S204
Terminal may include: that terminal is sentenced according to the adjustment that uplink synchronous adjustment amount carries out uplink synchronous to the carrier wave in secondary carrier timing group
It whether there is reference carrier in disconnected secondary carrier timing group；If so, terminal adjusts secondary carrier timing according to uplink synchronous adjustment amount
The uplink signal sending time of reference carrier in group；Activation carrier wave in secondary carrier timing group in addition to reference carrier, terminal
According to the uplink signal sending time of the uplink signal sending time adjustment activation carrier wave of reference carrier；If not, terminal according to
Uplink synchronous adjustment amount adjusts the activation carrier wave in secondary carrier timing group, and carrier wave will be activated as reference carrier.
The uplink timing of reference carrier in step S404 and step S408 implements as shown in Figure 5.The figure upper half
Divide at the time of indicating the downlink signal sent by base station that terminal detects (downlink timing), figure lower half portion is indicated with reference to load
The timing of wave uplink signal.At the time of terminal detects downlink signal arrival first, downlink timing is then determined, due to LTE system
In the length of each time slot be 1ms, be used as down at the time of 1ms after the downlink signal arrival time that terminal can detecte
Row timing；Then shift to an earlier date TA in downlink timing as uplink timing.
Due to the multipath characteristics of wireless environment, downlink signal transmitted by base station can have multiple copy incoming terminals,
In Project Realization, the arrival time of terminal detection downlink signal specifically refers to the first diameter signal (i.e. first that terminal detects
Signal copy) arrival time, or when referring to the arrival for the most powerful path signal (i.e. strongest signal copy) that terminal detects
It carves.
Furthermore, it should be pointed out that the timing of downlink signal is evenly spaced, this only signal ideally in Fig. 5
Figure, in the actual environment, the downlink arriving signal that terminal detects reach often uneven variation, and root is also wanted in downlink timing
It is adjusted at any time according to the arriving signal moment of detection.
Based on the activation of above-mentioned carrier wave, the above-mentioned uplink synchronous adjustment amount that the present embodiment obtains can pass through following sides
Formula is realized: 1) after terminal listens to the order for the specified secondary carrier of activation that base station issues, sending the random of designated carrier to base station
Access request；2) terminal receives the random access response that base station returns, wherein random access response carries base station according to random
The uplink synchronous primary quantity (TA) of secondary carrier timing group where the secondary carrier that access request determines；3) terminal is rung according to random access
It should determine downlink signal timing value, and the upper of secondary carrier timing group is determined according to downlink signal timing value and uplink synchronous primary quantity
Row synchronous adjustment amount.
During continuing and terminal room transmits, base station can remain the inspection to uplink signal arrival time for base station
It surveys, with the variation of the movement either wireless environment of terminal, some carrier wave uplink signal can not be always maintained at synchronization.When
When base station detects this error, the timing of base station meeting transmitting order to lower levels adjustment terminal, the embodiment of the present invention as shown in FIG. 6 is provided
Uplink timed maintenance schematic diagram, the specific steps of which are as follows:
Step S602, the clock calculation of uplink signal and inside of base station goes out uplink timing adjustment amount based on the received for base station,
And timing adjustment command is sent to terminal.
Further, identical as the initialization timing processing mode in above-described embodiment, the timing adjustment life of the present embodiment
Order is placed in media control messages (MAC CE) and sends, but unlike initialization timing processing, timing adjustment command is only
Occupy 6bit, correspondingly its value range be [0,1,2 ..., 63], it represent timing advance value TA=[0,1,2 ...,
1282]*Ts。
Further, base station also carries corresponding TAG information while transmission timing amount, and indicate its adjustment is that
The timing of a TAG.
Step S604 after terminal receives timing adjustment command, finds corresponding TAG, will adjust institute on the TAG using TA value
There is the carrier wave being activated, and adjusts their uplink transmission timing.
Further, as before, the timing specific implementation that uplink is sent is by downlink signal timing and MAC CE Lai really
Fixed (referring to Fig. 5).
Engineering in practice, since decoding terminals down order needs the regular hour, under preferable case, if terminal
Timing adjustment command is received in n-th of subframe (Subframe), then readjusts the timing of its uplink in the n-th+6 subframes, such as
Shown in Fig. 7.
Based on above-mentioned row timed maintenance process, the terminal in step S202 obtains the uplink synchronous adjustment of secondary carrier timing group
Amount can also include: that terminal receives the timing adjustment command that base station issues, wherein timing adjustment command carries secondary carrier timing
The synchronization primary quantity of group；Wherein, which is that base station detects that the uplink signal of the secondary carrier timing group of terminal occurs
When be delayed, determined according to the clock of uplink signal and the inside of base station；Terminal determines downlink according to above-mentioned timing adjustment command
Signal timing value, and the uplink synchronous that secondary carrier timing is organized is determined according to downlink signal timing value and uplink synchronous primary quantity (TA)
Adjustment amount.
It needs base station that can both activate some secondary carrier according to business, some can also be deactivated and be in state of activation
Secondary carrier, the process flow diagram of terminal when base station as shown in Figure 8 deactivates secondary carrier, the specific steps are as follows:
Step S802, terminal listens to deactivation some secondary carrier of base station transmission, and (the present embodiment is carried out by taking carrier wave A as an example
Illustrate) control command after, terminal terminate on carrier wave A data transmission；
Step S804, terminal judge whether carrier wave A is reference carrier in some TAG, if it is, going to step
Otherwise S806 goes to step S810；
Step S806, terminal judge whether there are also the carrier waves that other are active in TAG belonging to carrier wave A, such as
Fruit has, and executes step S808；If not provided, executing step S810；
Step S808, terminal select a carrier wave as new reference carrier from the activation carrier wave of the TAG；Terminal selection
There are two types of modes for one new reference carrier:
Mode one, terminal randomly select a carrier wave as new reference carrier in the remaining activation carrier wave of the TAG；
Mode two, corresponding to the carrier wave flag bit set-up mode in step S408, terminal is in the remaining activation carrier wave of the TAG
It is middle to select the smallest carrier wave of index (for example, the carrier wave is carrier wave B) as reference carrier.Between carrier wave B and former reference carrier when
Clock error is minimum, it can be considered that it is left most reliable synchronisation source, it is possible to reduce carrier wave is same to new reference carrier
Adjustment jump amount when step.
Further, the index value of new reference carrier is changed to zero by terminal, and carrier wave uplinks other in TAG are determined
When be adjusted to identical as new reference carrier.
Step S810, terminal deactivate carrier wave A.
After if terminal deactivates above-mentioned carrier wave A, where TAG in there is no the carrier wave of activation and the load in suspend mode
Wave, then terminal will delete the TAG in inside.
Based on the process of above-mentioned deactivation carrier wave, the uplink synchronisation method of above-mentioned multicarrier system further include: terminal receives
The deactivation command for the secondary carrier that base station issues；Terminal determines corresponding secondary carrier according to deactivation command, from corresponding auxiliary load
The secondary carrier is deleted in secondary carrier timing group where wave；If do not had in the secondary carrier timing group where the corresponding secondary carrier
When the secondary carrier of activation, secondary carrier timing group where the corresponding secondary carrier of terminal deletion, and notify base station.This mode can be with
Optimize the TAG of terminal maintenance, reduces maintenance cost.
If above-mentioned corresponding secondary carrier is reference carrier；Terminal is from the secondary carrier timing group where corresponding secondary carrier
After deleting corresponding secondary carrier, this method further include: terminal is random from the secondary carrier timing group where corresponding secondary carrier
Select an activation carrier wave as new reference carrier；Alternatively, terminal is from the secondary carrier timing group where corresponding secondary carrier
Select one with the smallest activation carrier wave of reference carrier clocking error as new reference carrier.This reference carrier again really
Determine mode, the carrier wave that can be convenient in TAG carries out uplink synchronous.
Corresponding to the above method, the embodiment of the invention also provides a kind of uplink synchronous device of multicarrier system, the dresses
Setting can be set realizes at the terminal, as shown in figure 9, the device comprises the following modules:
Uplink synchronous adjustment amount obtains module 92, for obtaining the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, auxiliary
The specified performance parameter of each carrier wave in carrier timing group meets setting range；
Uplink synchronous adjusts module 94, obtains module 92 with uplink synchronous adjustment amount and is connected, for according to uplink synchronous tune
Whole amount obtains the adjustment that the uplink synchronous adjustment amount that module 92 obtains carries out uplink synchronous to the carrier wave in secondary carrier timing group.
The present embodiment carries out uplink synchronous to each carrier wave in group using the mode of secondary carrier timing group, solves overloading
Uplink synchronous realizes difficult problem in wave application scenarios, ensure that each carrier wave of multi-carrier terminal when sending uplink signal,
The signal of each carrier wave can reach base station simultaneously, and then ensure that the business of base station and terminal room.
For the ease of dividing to each carrier wave, a kind of uplink synchronous device of multicarrier system is present embodiments provided
Specific block diagram, as shown in Figure 10, on the basis of above-mentioned Fig. 9, which further includes with lower module:
Secondary carrier timing group determining module 93, the secondary carrier configuration information issued for receiving base station on main carrier
Afterwards, the secondary carrier timing group where secondary carrier is determined according to the specified performance parameter of secondary carrier；
Secondary carrier timing group division module 96 is connected, for dividing secondary carrier with secondary carrier timing group determining module 93
It is organized to secondary carrier timing in the secondary carrier timing group that determining 93 modules determine；
Notification module 95 obtains module 92 with secondary carrier timing group division module 96 and uplink synchronous adjustment amount and is connected, uses
In the secondary carrier timing group notice where the secondary carrier for dividing secondary carrier timing group division module 96 to base station.
Determining module 93 can there are many implementation, secondary carrier timing groups as shown in figure 11 for above-mentioned secondary carrier timing group
The structural block diagram of determining module, the module include such as lower unit:
Searching unit 932, for when specified performance parameter is frequency band parameters, the frequency band lookup according to belonging to secondary carrier to be
It is no to have already present secondary carrier timing group；
First determination unit 934, is connected with searching unit 932, the feelings for being yes in the lookup result of searching unit 932
Secondary carrier timing group under condition, by the secondary carrier found timing group as secondary carrier；
First generation unit 936, is connected with searching unit 932, the feelings for being no in the lookup result of searching unit 932
Under condition, a new secondary carrier timing group is generated for secondary carrier.
The structural block diagram of determining module is organized in another secondary carrier timing as shown in figure 12, which includes with lower unit:
Frequency distance computing unit 931, for when specified performance parameter be frequency distance parameter when, calculate secondary carrier with
The frequency distance of carrier wave in existing secondary carrier timing group；
Second determination unit 933, is connected with frequency distance computing unit 931, in frequency distance computing unit 931
Secondary carrier timing when calculated result is that frequency distance is less than distance to a declared goal, by already present secondary carrier timing group as secondary carrier
Group；
Second generation unit 935, is connected with frequency distance computing unit 931, in frequency distance computing unit 931
Calculated result is that the frequency distance of the carrier wave in secondary carrier and each already present secondary carrier timing group is all larger than or is equal to specified
Apart from when, for secondary carrier generate a new secondary carrier timing group.
Figure 13 is the structural block diagram that uplink synchronous adjustment amount according to an embodiment of the present invention obtains module, is based on carrier activation
Uplink synchronous mode in the process, it may include with lower unit that uplink synchronous adjustment amount, which obtains module:
Request transmitting unit 922 is sent after listening to the order for the specified secondary carrier of activation that base station issues to base station
The random access request of designated carrier；
Receiving unit 924 is responded, is connected with request transmitting unit 922, for receiving the random access response of base station return,
Wherein, random access response carries the secondary carrier place that base station is determined according to the random access request that request transmitting unit is sent
The uplink synchronous primary quantity of secondary carrier timing group；
The first adjustment amount determination unit 926 is connected with response receiving unit 924, connects for receiving unit 924 according to response
The random access response of receipts determines downlink signal timing value, and is determined according to downlink signal timing value and uplink synchronous primary quantity auxiliary
The uplink synchronous adjustment amount of carrier timing group.
Another uplink synchronous adjustment amount as shown in figure 14 obtains the structural block diagram of module, is safeguarded based on uplink synchronous
Journey, it may include with lower unit that the uplink synchronous adjustment amount of the present embodiment, which obtains module:
Order receiving unit 921, the timing adjustment command issued for receiving base station, wherein timing adjustment command carries
There is the synchronization primary quantity of secondary carrier timing group；Wherein, synchronous primary quantity is the upper of the secondary carrier timing group that base station detects terminal
Delay when row signal occurs is determined according to the clock of uplink signal and inside of base station；
Second adjustment amount determination unit 923, is connected with order receiving unit 921, for being connect according to order receiving unit 921
The timing adjustment command of receipts determines downlink signal timing value, and is determined according to downlink signal timing value and uplink synchronous primary quantity auxiliary
The uplink synchronous adjustment amount of carrier timing group.
Preferably, above-mentioned uplink synchronous adjustment module includes: reference carrier judging unit, for judging secondary carrier timing group
In whether there is reference carrier；Time adjustment unit is connected with reference carrier judging unit, in reference carrier judging unit
Judging result be to be sent according to the uplink signal that uplink synchronous adjustment amount adjusts the reference carrier in secondary carrier timing group when being
Time；Activation carrier wave in secondary carrier timing group in addition to reference carrier, according to the uplink signal sending time tune of reference carrier
The uplink signal sending time of whole activation carrier wave；Carrier wave adjustment unit is connected with reference carrier judging unit, for carrying in reference
Wave judging unit judge structure for it is no when, according to uplink synchronous adjustment amount adjust secondary carrier timing group in activation carrier wave, and
Carrier wave will be activated as reference carrier.
In view of there are deactivated operation, above-mentioned apparatuses for carrier wave further include: deactivation command receiving module, for receiving
The deactivation command for the secondary carrier that base station issues；Secondary carrier removing module is connected with deactivation command receiving module, is used for basis
The received deactivation command of deactivation command receiving module determines corresponding secondary carrier, the secondary carrier where corresponding secondary carrier
Corresponding secondary carrier is deleted in timing group；Secondary carrier timing group removing module, be connected with secondary carrier removing module, for ought pair
When there is no the secondary carrier of activation in the secondary carrier timing group where the secondary carrier answered, the secondary carrier where corresponding secondary carrier is deleted
Timing group, and notify base station.
Corresponding to the mode of the update reference carrier in above method embodiment, above-mentioned apparatus can also be comprised the following modules
One of: the first reference carrier determining module, the corresponding secondary carrier for deleting when secondary carrier timing group removing module is reference
When carrier wave, an activation carrier wave is randomly choosed from the secondary carrier timing group where corresponding secondary carrier and is carried as new reference
Wave；Alternatively, the second reference carrier determining module, the corresponding secondary carrier for deleting when secondary carrier timing group removing module is ginseng
When examining carrier wave, selection one and reference carrier clocking error are the smallest sharp from the secondary carrier timing group where corresponding secondary carrier
Mobile load wave is as new reference carrier.
As can be seen from the above description, the embodiment of the present invention ensure that each carrier wave of multi-carrier terminal is sending uplink
When signal, the signal of each carrier wave can reach base station simultaneously, and the arrival time also keeps one between terminal and terminal
It causes, provides guarantee for going on smoothly for business, enhance the stability and practicability of system.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of uplink synchronisation method of multicarrier system, characterized by comprising:
Terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, each carrier wave in the secondary carrier timing group
Specified performance parameter meets setting range, and the setting range is used to one or more carrier waves being divided into secondary carrier timing group,
The specified performance parameter is frequency band parameters；
The terminal carries out the tune of uplink synchronous according to the uplink synchronous adjustment amount to the carrier wave in the secondary carrier timing group
It is whole.
2. the method according to claim 1, wherein terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group
Before, the method also includes:
After terminal receives the secondary carrier configuration information that base station issues on main carrier, joined according to the specified performance of the secondary carrier
Number determines the secondary carrier timing group where the secondary carrier；
The secondary carrier is divided into the determining secondary carrier timing group by the terminal, and will be auxiliary where the secondary carrier
Carrier timing group is notified to the base station.
3. according to the method described in claim 2, it is characterized in that；
Secondary carrier timing group where the terminal determines the secondary carrier according to the specified performance parameter of the secondary carrier includes:
Whether terminal frequency band lookup according to belonging to the secondary carrier has already present secondary carrier timing group；
If so, secondary carrier timing group of the terminal by the secondary carrier found timing group as the secondary carrier；
If not, the terminal is that the secondary carrier generates a new secondary carrier timing group.
4. according to the method described in claim 2, it is characterized in that, the specified performance parameter is frequency distance parameter；
Secondary carrier timing group where the terminal determines the secondary carrier according to the specified performance parameter of the secondary carrier includes:
The terminal calculates the frequency distance of the carrier wave in the secondary carrier and already present secondary carrier timing group；
If the frequency distance being calculated is less than distance to a declared goal, the already present secondary carrier timing is organized conduct by the terminal
The secondary carrier timing group of the secondary carrier；
If the frequency distance of the carrier wave in the secondary carrier and each already present secondary carrier timing group is all larger than or is equal to institute
Distance to a declared goal is stated, the terminal is that the secondary carrier generates a new secondary carrier timing group.
5. the method according to claim 1, wherein terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group
Include:
After the terminal listens to the order for the specified secondary carrier of activation that base station issues, the designated carrier is sent to the base station
Random access request；
The terminal receives the random access response that the base station returns, wherein the random access response carries the base
The uplink synchronous primary quantity for secondary carrier timing group where the secondary carrier determined according to the random access request of standing；
The terminal determines downlink signal timing value according to the random access response, and according to the downlink signal timing value and
The uplink synchronous primary quantity determines the uplink synchronous adjustment amount of the secondary carrier timing group.
6. the method according to claim 1, wherein terminal obtains the uplink synchronous adjustment amount of secondary carrier timing group
Include:
The terminal receives the timing adjustment command that base station issues, wherein the timing adjustment command carries the secondary carrier
The synchronization primary quantity of timing group；Wherein, the synchronous primary quantity is the secondary carrier timing group that the base station detects the terminal
Uplink signal delay when occurring, determined according to the clock of the uplink signal and the inside of base station；
The terminal determines downlink signal timing value according to the timing adjustment command, and according to the downlink signal timing value and
The uplink synchronous primary quantity determines the uplink synchronous adjustment amount of the secondary carrier timing group.
7. the method according to claim 1, wherein the terminal is according to the uplink synchronous adjustment amount to described
The adjustment that carrier wave in secondary carrier timing group carries out uplink synchronous includes:
The terminal judges in the secondary carrier timing group with the presence or absence of reference carrier；
If so, the terminal adjusts the upper of the reference carrier in the secondary carrier timing group according to the uplink synchronous adjustment amount
Row signal sending time；Activation carrier wave in the secondary carrier timing group in addition to the reference carrier, the terminal is according to institute
The uplink signal sending time for stating reference carrier adjusts the uplink signal sending time of the activation carrier wave；
If not, the terminal adjusts the activation carrier wave in the secondary carrier timing group according to the uplink synchronous adjustment amount, and
Using the activation carrier wave as reference carrier.
8. method according to claim 1-7, which is characterized in that the method also includes:
The terminal receives the deactivation command for the secondary carrier that base station issues；
The terminal determines corresponding secondary carrier according to the deactivation command, the secondary carrier where the corresponding secondary carrier
The corresponding secondary carrier is deleted in timing group；
If there is no the secondary carrier of activation in the secondary carrier timing group where the corresponding secondary carrier, the terminal deletion institute
The secondary carrier timing group where corresponding secondary carrier is stated, and notifies the base station.
9. according to the method described in claim 8, it is characterized in that, the corresponding secondary carrier is reference carrier；
The terminal is after deleting the corresponding secondary carrier in the secondary carrier timing group where the corresponding secondary carrier, institute
State method further include: the terminal randomly chooses an activation from the secondary carrier timing group where the corresponding secondary carrier and carries
Wave is as new reference carrier；Alternatively, the terminal selects one from the secondary carrier timing group where the corresponding secondary carrier
A and the smallest activation carrier wave of the reference carrier clocking error is as new reference carrier.
10. a kind of uplink synchronous device of multicarrier system, characterized by comprising:
Uplink synchronous adjustment amount obtains module, for obtaining the uplink synchronous adjustment amount of secondary carrier timing group；Wherein, the auxiliary load
The specified performance parameter of each carrier wave in wave timing group meets setting range, and the setting range is used to carry one or more
Wave is divided into secondary carrier timing group, and the specified performance parameter is frequency band parameters；
Uplink synchronous adjusts module, adjusts for obtaining the uplink synchronous that module obtains according to the uplink synchronous adjustment amount
Measure the adjustment that uplink synchronous is carried out to the carrier wave in the secondary carrier timing group.
11. device according to claim 10, which is characterized in that described device further include:
Secondary carrier timing group determining module, after receiving the secondary carrier configuration information that base station issues on main carrier, according to
The specified performance parameter of the secondary carrier determines the secondary carrier timing group where the secondary carrier；
Secondary carrier timing group division module, for the secondary carrier to be divided into what the secondary carrier timing group determining module determined
In the secondary carrier timing group；
Notification module, the secondary carrier timing group where the secondary carrier for dividing the secondary carrier timing group division module
It notifies to the base station.
12. device according to claim 11, which is characterized in that the secondary carrier timing organizes determining module and includes:
Whether searching unit has already present secondary carrier timing group for the frequency band lookup according to belonging to the secondary carrier；
First determination unit, the auxiliary load for will find in the case where the lookup result of the searching unit, which is, is
Secondary carrier timing group of the wave timing group as the secondary carrier；
First generation unit, for generating one for the secondary carrier in the case where the lookup result of the searching unit is no
A new secondary carrier timing group.
13. device according to claim 11, which is characterized in that the secondary carrier timing organizes determining module and includes:
Frequency distance computing unit, for when the specified performance parameter be frequency distance parameter when, calculate the secondary carrier with
The frequency distance of carrier wave in already present secondary carrier timing group；
Second determination unit, for the calculated result of the frequency distance computing unit be the frequency distance be less than it is specified away from
From when, secondary carrier timing group by the already present secondary carrier timing group as the secondary carrier；
Second generation unit, for the calculated result of the frequency distance computing unit be the secondary carrier with it is each existing
Secondary carrier timing group in carrier wave frequency distance be all larger than or be equal to the distance to a declared goal when, for the secondary carrier generate one
A new secondary carrier timing group.
14. device according to claim 10, which is characterized in that the uplink synchronous adjustment amount obtains module and includes:
Request transmitting unit sends institute to the base station after listening to the order for the specified secondary carrier of activation that base station issues
State the random access request of designated carrier；
Receiving unit is responded, the random access response returned for receiving the base station, wherein the random access response carries
The auxiliary load in secondary carrier place for thering is the base station to be determined according to the random access request that the request transmitting unit is sent
The uplink synchronous primary quantity of wave timing group；
The first adjustment amount determination unit, for determining downlink according to the received random access response of response receiving unit
Signal timing value, and the secondary carrier timing group is determined according to the downlink signal timing value and the uplink synchronous primary quantity
Uplink synchronous adjustment amount.
15. device according to claim 10, which is characterized in that the uplink synchronous adjustment amount obtains module and includes:
Order receiving unit, the timing adjustment command issued for receiving base station, wherein the timing adjustment command carries
State the synchronization primary quantity of secondary carrier timing group；Wherein, the synchronous primary quantity is that the base station detects that the secondary carrier of terminal is fixed
When group uplink signal delay when occurring, determined according to the clock of the uplink signal and the inside of base station；
Second adjustment amount determination unit, for determining downlink according to the received timing adjustment command of the order receiving unit
Signal timing value, and the secondary carrier timing group is determined according to the downlink signal timing value and the uplink synchronous primary quantity
Uplink synchronous adjustment amount.
16. device according to claim 10, which is characterized in that the uplink synchronous adjusts module and includes:
Reference carrier judging unit, for judging in the secondary carrier timing group with the presence or absence of reference carrier；
Time adjustment unit is when being, according to the uplink synchronous for the judging result in the reference carrier judging unit
Adjustment amount adjusts the uplink signal sending time of the reference carrier in the secondary carrier timing group；It is removed in the secondary carrier timing group
Activation carrier wave except the reference carrier adjusts the activation carrier wave according to the uplink signal sending time of the reference carrier
Uplink signal sending time；
Carrier wave adjustment unit, for the reference carrier judging unit judge structure for it is no when, according to the uplink synchronous
Adjustment amount adjusts the activation carrier wave in the secondary carrier timing group, and using the activation carrier wave as reference carrier.
17. the described in any item devices of 0-16 according to claim 1, which is characterized in that described device further include:
Deactivation command receiving module, for receiving the deactivation command for the secondary carrier that base station issues；
Secondary carrier removing module is corresponded to for being determined according to the received deactivation command of the deactivation command receiving module
Secondary carrier, delete the corresponding secondary carrier from the secondary carrier timing group where the corresponding secondary carrier；
Secondary carrier timing group removing module, for not activated when in the secondary carrier timing group where the corresponding secondary carrier
Secondary carrier when, delete the secondary carrier timing group where the corresponding secondary carrier, and notify the base station.
18. device according to claim 17, which is characterized in that described device further includes with one of lower module:
First reference carrier determining module, the corresponding secondary carrier for being deleted when the secondary carrier timing group removing module
When for reference carrier, an activation carrier wave is randomly choosed from the secondary carrier timing group where the corresponding secondary carrier as newly
Reference carrier；
Second reference carrier determining module, the corresponding secondary carrier for being deleted when the secondary carrier timing group removing module
When for reference carrier, one and the reference carrier clock are selected from the secondary carrier timing group where the corresponding secondary carrier
The smallest activation carrier wave of error is as new reference carrier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210072668.8A CN102595590B (en) | 2012-03-19 | 2012-03-19 | The uplink synchronisation method and device of multicarrier system |
| PCT/CN2012/075506 WO2013139074A1 (en) | 2012-03-19 | 2012-05-15 | Uplink synchronization method and device of multi-carrier system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210072668.8A CN102595590B (en) | 2012-03-19 | 2012-03-19 | The uplink synchronisation method and device of multicarrier system |
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| Publication Number | Publication Date |
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| CN102595590A CN102595590A (en) | 2012-07-18 |
| CN102595590B true CN102595590B (en) | 2019-02-12 |
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| CN201210072668.8A Expired - Fee Related CN102595590B (en) | 2012-03-19 | 2012-03-19 | The uplink synchronisation method and device of multicarrier system |
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| WO (1) | WO2013139074A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BR112015031463B1 (en) * | 2013-08-09 | 2023-04-18 | Huawei Technologies Co., Ltd | TIMER VALUE ADJUSTMENT METHOD AND DEVICE |
| CN107124758B (en) * | 2016-02-25 | 2019-11-19 | 大唐移动通信设备有限公司 | It is a kind of to realize synchronous method and device |
| CN110493880B (en) * | 2019-08-30 | 2023-04-18 | 成都天奥集团有限公司 | Multi-user uplink resource scheduling method based on terminal side waiting under wide-coverage scene |
| CN117221969B (en) * | 2022-06-01 | 2025-07-01 | 中国电信股份有限公司 | Uplink signal transmitting method, terminal and storage medium |
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| CN101646234A (en) * | 2009-09-01 | 2010-02-10 | 中兴通讯股份有限公司 | Obtaining method of timing lead |
| CN102014477B (en) * | 2009-10-30 | 2013-11-06 | 电信科学技术研究院 | Method, apparatus and system for uplink synchronization |
| US9084195B2 (en) * | 2010-04-01 | 2015-07-14 | Nokia Technologies Oy | Multiple timing advance and carrier aggregation |
| CN102158948B (en) * | 2011-02-16 | 2014-01-15 | 普天信息技术研究院有限公司 | Method for Obtaining Uplink Timing Advance in Carrier Aggregation |
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